Imported from /home/lorry/working-area/delta_ntp/ntp-dev-4.2.7p482.tar.gz.ntp-dev-4.2.7p482

69 files changed, 19105 insertions, 0 deletions

diff --git a/libntp/Makefile.am b/libntp/Makefile.am
new file mode 100644
index 0000000..515fa9a
--- /dev/null
+++ b/libntp/Makefile.am
@@ -0,0 +1,125 @@
+NULL=
+BUILT_SOURCES =
+CLEANFILES =
+noinst_LIBRARIES = libntp.a @MAKE_LIBNTPSIM@
+EXTRA_LIBRARIES = libntpsim.a
+
+libisc_SRCS =								\
+	$(srcdir)/../lib/isc/assertions.c				\
+	$(srcdir)/../lib/isc/buffer.c					\
+	$(srcdir)/../lib/isc/backtrace-emptytbl.c			\
+	$(srcdir)/../lib/isc/backtrace.c				\
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/condition.c	\
+	$(srcdir)/../lib/isc/unix/dir.c					\
+	$(srcdir)/../lib/isc/error.c					\
+	$(srcdir)/../lib/isc/unix/errno2result.c			\
+	$(srcdir)/../lib/isc/event.c					\
+	$(srcdir)/../lib/isc/unix/file.c				\
+	$(srcdir)/../lib/isc/inet_ntop.c				\
+	$(srcdir)/../lib/isc/inet_pton.c				\
+	$(srcdir)/../lib/isc/unix/interfaceiter.c			\
+	$(srcdir)/../lib/isc/lib.c					\
+	$(srcdir)/../lib/isc/log.c					\
+	$(srcdir)/../lib/isc/md5.c					\
+	$(srcdir)/../lib/isc/nls/msgcat.c				\
+	$(srcdir)/../lib/isc/unix/net.c					\
+	$(srcdir)/../lib/isc/netaddr.c					\
+	$(srcdir)/../lib/isc/netscope.c					\
+	$(srcdir)/../lib/isc/ondestroy.c				\
+	$(srcdir)/../lib/isc/random.c					\
+	$(srcdir)/../lib/isc/result.c					\
+	$(srcdir)/../lib/isc/unix/stdio.c				\
+	$(srcdir)/../lib/isc/unix/stdtime.c				\
+	$(srcdir)/../lib/isc/unix/strerror.c				\
+	$(srcdir)/../lib/isc/task.c					\
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/thread.c	\
+	$(srcdir)/../lib/isc/unix/time.c				\
+	$(srcdir)/../lib/isc/sha1.c					\
+	$(srcdir)/../lib/isc/sockaddr.c					\
+	$(NULL)
+
+if PTHREADS
+libisc_SRCS += $(srcdir)/../lib/isc/pthreads/mutex.c
+endif
+
+libntp_a_SRCS =						\
+	a_md5encrypt.c					\
+	adjtime.c					\
+	atoint.c					\
+	atolfp.c					\
+	atouint.c					\
+	audio.c						\
+	authkeys.c					\
+	authreadkeys.c					\
+	authusekey.c					\
+	bsd_strerror.c					\
+	buftvtots.c					\
+	caljulian.c					\
+	caltontp.c					\
+	calyearstart.c					\
+	clocktime.c					\
+	clocktypes.c					\
+	decodenetnum.c					\
+	dofptoa.c					\
+	dolfptoa.c					\
+	emalloc.c					\
+	findconfig.c					\
+	getopt.c					\
+	hextoint.c					\
+	hextolfp.c					\
+	humandate.c					\
+	icom.c						\
+	iosignal.c					\
+	lib_strbuf.c					\
+	machines.c					\
+	mktime.c					\
+	modetoa.c					\
+	mstolfp.c					\
+	msyslog.c					\
+	netof.c						\
+	ntp_calendar.c					\
+	ntp_intres.c					\
+	ntp_libopts.c					\
+	ntp_lineedit.c					\
+	ntp_rfc2553.c					\
+	ntp_worker.c					\
+	numtoa.c					\
+	numtohost.c					\
+	octtoint.c					\
+	prettydate.c					\
+	ntp_random.c					\
+	recvbuff.c					\
+	refnumtoa.c					\
+	snprintf.c					\
+	socket.c					\
+	socktoa.c					\
+	socktohost.c					\
+	ssl_init.c					\
+	statestr.c					\
+	strdup.c					\
+	strl_obsd.c					\
+	syssignal.c					\
+	timetoa.c					\
+	timevalops.c					\
+	uglydate.c					\
+	vint64ops.c					\
+	work_fork.c					\
+	work_thread.c					\
+	ymd2yd.c					\
+	$(libisc_SRCS)					\
+	$(NULL)
+
+libntp_a_SOURCES = systime.c $(libntp_a_SRCS)
+libntpsim_a_SOURCES = systime_s.c $(libntp_a_SRCS)
+EXTRA_libntp_a_SOURCES = adjtimex.c
+
+AM_CFLAGS = $(CFLAGS_NTP)
+
+AM_CPPFLAGS  = $(NTP_INCS)
+AM_CPPFLAGS += $(LIBOPTS_CFLAGS)
+AM_CPPFLAGS += $(CPPFLAGS_NTP)
+
+EXTRA_DIST = README
+
+include $(top_srcdir)/depsver.mf
+include $(top_srcdir)/includes.mf
diff --git a/libntp/Makefile.in b/libntp/Makefile.in
new file mode 100644
index 0000000..87645ca
--- /dev/null
+++ b/libntp/Makefile.in
@@ -0,0 +1,1557 @@
+# Makefile.in generated by automake 1.11.1 from Makefile.am.
+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
+pkgincludedir = $(includedir)/@PACKAGE@
+pkglibdir = $(libdir)/@PACKAGE@
+pkglibexecdir = $(libexecdir)/@PACKAGE@
+am__cd = CDPATH="$${ZSH_VERSION+.}$(PATH_SEPARATOR)" && cd
+install_sh_DATA = $(install_sh) -c -m 644
+install_sh_PROGRAM = $(install_sh) -c
+install_sh_SCRIPT = $(install_sh) -c
+INSTALL_HEADER = $(INSTALL_DATA)
+transform = $(program_transform_name)
+NORMAL_INSTALL = :
+PRE_INSTALL = :
+POST_INSTALL = :
+NORMAL_UNINSTALL = :
+PRE_UNINSTALL = :
+POST_UNINSTALL = :
+build_triplet = @build@
+host_triplet = @host@
+@PTHREADS_TRUE@am__append_1 = $(srcdir)/../lib/isc/pthreads/mutex.c
+DIST_COMMON = README $(srcdir)/Makefile.am $(srcdir)/Makefile.in \
+	$(top_srcdir)/depsver.mf $(top_srcdir)/includes.mf
+subdir = libntp
+ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
+am__aclocal_m4_deps = $(top_srcdir)/sntp/libopts/m4/libopts.m4 \
+	$(top_srcdir)/sntp/libopts/m4/stdnoreturn.m4 \
+	$(top_srcdir)/sntp/libevent/m4/openldap-thread-check.m4 \
+	$(top_srcdir)/sntp/libevent/m4/openldap.m4 \
+	$(top_srcdir)/sntp/m4/define_dir.m4 \
+	$(top_srcdir)/sntp/m4/hms_search_lib.m4 \
+	$(top_srcdir)/sntp/m4/libtool.m4 \
+	$(top_srcdir)/sntp/m4/ltoptions.m4 \
+	$(top_srcdir)/sntp/m4/ltsugar.m4 \
+	$(top_srcdir)/sntp/m4/ltversion.m4 \
+	$(top_srcdir)/sntp/m4/lt~obsolete.m4 \
+	$(top_srcdir)/sntp/m4/ntp_cacheversion.m4 \
+	$(top_srcdir)/sntp/m4/ntp_compiler.m4 \
+	$(top_srcdir)/sntp/m4/ntp_crosscompile.m4 \
+	$(top_srcdir)/sntp/m4/ntp_debug.m4 \
+	$(top_srcdir)/sntp/m4/ntp_dir_sep.m4 \
+	$(top_srcdir)/sntp/m4/ntp_facilitynames.m4 \
+	$(top_srcdir)/sntp/m4/ntp_googletest.m4 \
+	$(top_srcdir)/sntp/m4/ntp_ipv6.m4 \
+	$(top_srcdir)/sntp/m4/ntp_lib_m.m4 \
+	$(top_srcdir)/sntp/m4/ntp_libevent.m4 \
+	$(top_srcdir)/sntp/m4/ntp_libntp.m4 \
+	$(top_srcdir)/sntp/m4/ntp_lineeditlibs.m4 \
+	$(top_srcdir)/sntp/m4/ntp_locinfo.m4 \
+	$(top_srcdir)/sntp/m4/ntp_openssl.m4 \
+	$(top_srcdir)/sntp/m4/ntp_pkg_config.m4 \
+	$(top_srcdir)/sntp/m4/ntp_prog_cc.m4 \
+	$(top_srcdir)/sntp/m4/ntp_rlimit.m4 \
+	$(top_srcdir)/sntp/m4/ntp_sntp.m4 \
+	$(top_srcdir)/sntp/m4/ntp_ver_suffix.m4 \
+	$(top_srcdir)/sntp/m4/ntp_vpathhack.m4 \
+	$(top_srcdir)/sntp/m4/os_cflags.m4 \
+	$(top_srcdir)/sntp/m4/snprintf.m4 \
+	$(top_srcdir)/sntp/m4/version.m4 $(top_srcdir)/configure.ac
+am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
+	$(ACLOCAL_M4)
+mkinstalldirs = $(install_sh) -d
+CONFIG_HEADER = $(top_builddir)/config.h
+CONFIG_CLEAN_FILES =
+CONFIG_CLEAN_VPATH_FILES =
+LIBRARIES = $(noinst_LIBRARIES)
+ARFLAGS = cru
+AM_V_AR = $(am__v_AR_$(V))
+am__v_AR_ = $(am__v_AR_$(AM_DEFAULT_VERBOSITY))
+am__v_AR_0 = @echo "  AR    " $@;
+AM_V_at = $(am__v_at_$(V))
+am__v_at_ = $(am__v_at_$(AM_DEFAULT_VERBOSITY))
+am__v_at_0 = @
+libntp_a_AR = $(AR) $(ARFLAGS)
+libntp_a_LIBADD =
+am__libntp_a_SOURCES_DIST = systime.c a_md5encrypt.c adjtime.c \
+	atoint.c atolfp.c atouint.c audio.c authkeys.c authreadkeys.c \
+	authusekey.c bsd_strerror.c buftvtots.c caljulian.c caltontp.c \
+	calyearstart.c clocktime.c clocktypes.c decodenetnum.c \
+	dofptoa.c dolfptoa.c emalloc.c findconfig.c getopt.c \
+	hextoint.c hextolfp.c humandate.c icom.c iosignal.c \
+	lib_strbuf.c machines.c mktime.c modetoa.c mstolfp.c msyslog.c \
+	netof.c ntp_calendar.c ntp_intres.c ntp_libopts.c \
+	ntp_lineedit.c ntp_rfc2553.c ntp_worker.c numtoa.c numtohost.c \
+	octtoint.c prettydate.c ntp_random.c recvbuff.c refnumtoa.c \
+	snprintf.c socket.c socktoa.c socktohost.c ssl_init.c \
+	statestr.c strdup.c strl_obsd.c syssignal.c timetoa.c \
+	timevalops.c uglydate.c vint64ops.c work_fork.c work_thread.c \
+	ymd2yd.c $(srcdir)/../lib/isc/assertions.c \
+	$(srcdir)/../lib/isc/buffer.c \
+	$(srcdir)/../lib/isc/backtrace-emptytbl.c \
+	$(srcdir)/../lib/isc/backtrace.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/condition.c \
+	$(srcdir)/../lib/isc/unix/dir.c $(srcdir)/../lib/isc/error.c \
+	$(srcdir)/../lib/isc/unix/errno2result.c \
+	$(srcdir)/../lib/isc/event.c $(srcdir)/../lib/isc/unix/file.c \
+	$(srcdir)/../lib/isc/inet_ntop.c \
+	$(srcdir)/../lib/isc/inet_pton.c \
+	$(srcdir)/../lib/isc/unix/interfaceiter.c \
+	$(srcdir)/../lib/isc/lib.c $(srcdir)/../lib/isc/log.c \
+	$(srcdir)/../lib/isc/md5.c $(srcdir)/../lib/isc/nls/msgcat.c \
+	$(srcdir)/../lib/isc/unix/net.c $(srcdir)/../lib/isc/netaddr.c \
+	$(srcdir)/../lib/isc/netscope.c \
+	$(srcdir)/../lib/isc/ondestroy.c $(srcdir)/../lib/isc/random.c \
+	$(srcdir)/../lib/isc/result.c \
+	$(srcdir)/../lib/isc/unix/stdio.c \
+	$(srcdir)/../lib/isc/unix/stdtime.c \
+	$(srcdir)/../lib/isc/unix/strerror.c \
+	$(srcdir)/../lib/isc/task.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/thread.c \
+	$(srcdir)/../lib/isc/unix/time.c $(srcdir)/../lib/isc/sha1.c \
+	$(srcdir)/../lib/isc/sockaddr.c \
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+@PTHREADS_TRUE@am__objects_2 = mutex.$(OBJEXT)
+am__objects_3 = assertions.$(OBJEXT) buffer.$(OBJEXT) \
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+	condition.$(OBJEXT) dir.$(OBJEXT) error.$(OBJEXT) \
+	errno2result.$(OBJEXT) event.$(OBJEXT) file.$(OBJEXT) \
+	inet_ntop.$(OBJEXT) inet_pton.$(OBJEXT) \
+	interfaceiter.$(OBJEXT) lib.$(OBJEXT) log.$(OBJEXT) \
+	md5.$(OBJEXT) msgcat.$(OBJEXT) net.$(OBJEXT) netaddr.$(OBJEXT) \
+	netscope.$(OBJEXT) ondestroy.$(OBJEXT) random.$(OBJEXT) \
+	result.$(OBJEXT) stdio.$(OBJEXT) stdtime.$(OBJEXT) \
+	strerror.$(OBJEXT) task.$(OBJEXT) thread.$(OBJEXT) \
+	time.$(OBJEXT) sha1.$(OBJEXT) sockaddr.$(OBJEXT) \
+	$(am__objects_1) $(am__objects_2)
+am__objects_4 = a_md5encrypt.$(OBJEXT) adjtime.$(OBJEXT) \
+	atoint.$(OBJEXT) atolfp.$(OBJEXT) atouint.$(OBJEXT) \
+	audio.$(OBJEXT) authkeys.$(OBJEXT) authreadkeys.$(OBJEXT) \
+	authusekey.$(OBJEXT) bsd_strerror.$(OBJEXT) \
+	buftvtots.$(OBJEXT) caljulian.$(OBJEXT) caltontp.$(OBJEXT) \
+	calyearstart.$(OBJEXT) clocktime.$(OBJEXT) \
+	clocktypes.$(OBJEXT) decodenetnum.$(OBJEXT) dofptoa.$(OBJEXT) \
+	dolfptoa.$(OBJEXT) emalloc.$(OBJEXT) findconfig.$(OBJEXT) \
+	getopt.$(OBJEXT) hextoint.$(OBJEXT) hextolfp.$(OBJEXT) \
+	humandate.$(OBJEXT) icom.$(OBJEXT) iosignal.$(OBJEXT) \
+	lib_strbuf.$(OBJEXT) machines.$(OBJEXT) mktime.$(OBJEXT) \
+	modetoa.$(OBJEXT) mstolfp.$(OBJEXT) msyslog.$(OBJEXT) \
+	netof.$(OBJEXT) ntp_calendar.$(OBJEXT) ntp_intres.$(OBJEXT) \
+	ntp_libopts.$(OBJEXT) ntp_lineedit.$(OBJEXT) \
+	ntp_rfc2553.$(OBJEXT) ntp_worker.$(OBJEXT) numtoa.$(OBJEXT) \
+	numtohost.$(OBJEXT) octtoint.$(OBJEXT) prettydate.$(OBJEXT) \
+	ntp_random.$(OBJEXT) recvbuff.$(OBJEXT) refnumtoa.$(OBJEXT) \
+	snprintf.$(OBJEXT) socket.$(OBJEXT) socktoa.$(OBJEXT) \
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+	vint64ops.$(OBJEXT) work_fork.$(OBJEXT) work_thread.$(OBJEXT) \
+	ymd2yd.$(OBJEXT) $(am__objects_3) $(am__objects_1)
+am_libntp_a_OBJECTS = systime.$(OBJEXT) $(am__objects_4)
+libntp_a_OBJECTS = $(am_libntp_a_OBJECTS)
+libntpsim_a_AR = $(AR) $(ARFLAGS)
+libntpsim_a_LIBADD =
+am__libntpsim_a_SOURCES_DIST = systime_s.c a_md5encrypt.c adjtime.c \
+	atoint.c atolfp.c atouint.c audio.c authkeys.c authreadkeys.c \
+	authusekey.c bsd_strerror.c buftvtots.c caljulian.c caltontp.c \
+	calyearstart.c clocktime.c clocktypes.c decodenetnum.c \
+	dofptoa.c dolfptoa.c emalloc.c findconfig.c getopt.c \
+	hextoint.c hextolfp.c humandate.c icom.c iosignal.c \
+	lib_strbuf.c machines.c mktime.c modetoa.c mstolfp.c msyslog.c \
+	netof.c ntp_calendar.c ntp_intres.c ntp_libopts.c \
+	ntp_lineedit.c ntp_rfc2553.c ntp_worker.c numtoa.c numtohost.c \
+	octtoint.c prettydate.c ntp_random.c recvbuff.c refnumtoa.c \
+	snprintf.c socket.c socktoa.c socktohost.c ssl_init.c \
+	statestr.c strdup.c strl_obsd.c syssignal.c timetoa.c \
+	timevalops.c uglydate.c vint64ops.c work_fork.c work_thread.c \
+	ymd2yd.c $(srcdir)/../lib/isc/assertions.c \
+	$(srcdir)/../lib/isc/buffer.c \
+	$(srcdir)/../lib/isc/backtrace-emptytbl.c \
+	$(srcdir)/../lib/isc/backtrace.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/condition.c \
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+	$(srcdir)/../lib/isc/unix/errno2result.c \
+	$(srcdir)/../lib/isc/event.c $(srcdir)/../lib/isc/unix/file.c \
+	$(srcdir)/../lib/isc/inet_ntop.c \
+	$(srcdir)/../lib/isc/inet_pton.c \
+	$(srcdir)/../lib/isc/unix/interfaceiter.c \
+	$(srcdir)/../lib/isc/lib.c $(srcdir)/../lib/isc/log.c \
+	$(srcdir)/../lib/isc/md5.c $(srcdir)/../lib/isc/nls/msgcat.c \
+	$(srcdir)/../lib/isc/unix/net.c $(srcdir)/../lib/isc/netaddr.c \
+	$(srcdir)/../lib/isc/netscope.c \
+	$(srcdir)/../lib/isc/ondestroy.c $(srcdir)/../lib/isc/random.c \
+	$(srcdir)/../lib/isc/result.c \
+	$(srcdir)/../lib/isc/unix/stdio.c \
+	$(srcdir)/../lib/isc/unix/stdtime.c \
+	$(srcdir)/../lib/isc/unix/strerror.c \
+	$(srcdir)/../lib/isc/task.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/thread.c \
+	$(srcdir)/../lib/isc/unix/time.c $(srcdir)/../lib/isc/sha1.c \
+	$(srcdir)/../lib/isc/sockaddr.c \
+	$(srcdir)/../lib/isc/pthreads/mutex.c
+am_libntpsim_a_OBJECTS = systime_s.$(OBJEXT) $(am__objects_4)
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+am__v_GEN_0 = @echo "  GEN   " $@;
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+	$(libntpsim_a_SOURCES)
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+	$(am__libntpsim_a_SOURCES_DIST)
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+AUTOHEADER = @AUTOHEADER@
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+AWK = @AWK@
+CALC_TICKADJ_DB = @CALC_TICKADJ_DB@
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+DLLTOOL = @DLLTOOL@
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+INSTALL = @INSTALL@
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+INSTALL_PROGRAM = @INSTALL_PROGRAM@
+INSTALL_SCRIPT = @INSTALL_SCRIPT@
+INSTALL_STRIP_PROGRAM = @INSTALL_STRIP_PROGRAM@
+LD = @LD@
+LDADD_LIBNTP = @LDADD_LIBNTP@
+LDADD_NLIST = @LDADD_NLIST@
+LDADD_NTP = @LDADD_NTP@
+LDFLAGS = @LDFLAGS@
+LDFLAGS_NTP = @LDFLAGS_NTP@
+LIBISC_PTHREADS_NOTHREADS = @LIBISC_PTHREADS_NOTHREADS@
+LIBM = @LIBM@
+LIBOBJS = @LIBOBJS@
+LIBOPTS_CFLAGS = @LIBOPTS_CFLAGS@
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+MAKE_CHECK_Y2K = @MAKE_CHECK_Y2K@
+MAKE_LIBNTPSIM = @MAKE_LIBNTPSIM@
+MAKE_LIBPARSE = @MAKE_LIBPARSE@
+MAKE_LIBPARSE_KERNEL = @MAKE_LIBPARSE_KERNEL@
+MAKE_NTPDSIM = @MAKE_NTPDSIM@
+MAKE_NTPSNMPD = @MAKE_NTPSNMPD@
+MAKE_NTPTIME = @MAKE_NTPTIME@
+MAKE_PARSEKMODULE = @MAKE_PARSEKMODULE@
+MAKE_TICKADJ = @MAKE_TICKADJ@
+MAKE_TIMETRIM = @MAKE_TIMETRIM@
+MANIFEST_TOOL = @MANIFEST_TOOL@
+MANTAGFMT = @MANTAGFMT@
+MKDIR_P = @MKDIR_P@
+NM = @NM@
+NMEDIT = @NMEDIT@
+NTPDATE_DB = @NTPDATE_DB@
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+NTPDATE_DS = @NTPDATE_DS@
+NTPDATE_MS = @NTPDATE_MS@
+NTPDATE_NI = @NTPDATE_NI@
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+NTPDC_DS = @NTPDC_DS@
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+NTPDSIM_DS = @NTPDSIM_DS@
+NTPDSIM_MS = @NTPDSIM_MS@
+NTPDSIM_NI = @NTPDSIM_NI@
+NTPD_DB = @NTPD_DB@
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+NTPD_DS = @NTPD_DS@
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+NTPSNMPD_DB = @NTPSNMPD_DB@
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+NTPSNMPD_NI = @NTPSNMPD_NI@
+NTPSWEEP_DB = @NTPSWEEP_DB@
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+NTPTRACE_MS = @NTPTRACE_MS@
+NTPTRACE_NI = @NTPTRACE_NI@
+NTP_KEYGEN_DB = @NTP_KEYGEN_DB@
+NTP_KEYGEN_DL = @NTP_KEYGEN_DL@
+NTP_KEYGEN_DS = @NTP_KEYGEN_DS@
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+NTP_KEYSDIR = @NTP_KEYSDIR@
+NTP_WAIT_DB = @NTP_WAIT_DB@
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+NTP_WAIT_DS = @NTP_WAIT_DS@
+NTP_WAIT_MS = @NTP_WAIT_MS@
+NTP_WAIT_NI = @NTP_WAIT_NI@
+OBJDUMP = @OBJDUMP@
+OBJEXT = @OBJEXT@
+OTOOL = @OTOOL@
+OTOOL64 = @OTOOL64@
+PACKAGE = @PACKAGE@
+PACKAGE_BUGREPORT = @PACKAGE_BUGREPORT@
+PACKAGE_NAME = @PACKAGE_NAME@
+PACKAGE_STRING = @PACKAGE_STRING@
+PACKAGE_TARNAME = @PACKAGE_TARNAME@
+PACKAGE_URL = @PACKAGE_URL@
+PACKAGE_VERSION = @PACKAGE_VERSION@
+PATH_NET_SNMP_CONFIG = @PATH_NET_SNMP_CONFIG@
+PATH_PERL = @PATH_PERL@
+PATH_SEPARATOR = @PATH_SEPARATOR@
+PATH_TEST = @PATH_TEST@
+PERLLIBDIR = @PERLLIBDIR@
+PKG_CONFIG = @PKG_CONFIG@
+POSIX_SHELL = @POSIX_SHELL@
+PROPDELAY = @PROPDELAY@
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+RANLIB = @RANLIB@
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+SET_MAKE = @SET_MAKE@
+SHELL = @SHELL@
+SNMP_CFLAGS = @SNMP_CFLAGS@
+SNMP_CPPFLAGS = @SNMP_CPPFLAGS@
+SNMP_LIBS = @SNMP_LIBS@
+SNTP = @SNTP@
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+SNTP_DS = @SNTP_DS@
+SNTP_MS = @SNTP_MS@
+SNTP_NI = @SNTP_NI@
+STDNORETURN_H = @STDNORETURN_H@
+STRIP = @STRIP@
+TESTDCF = @TESTDCF@
+TICKADJ_DB = @TICKADJ_DB@
+TICKADJ_DL = @TICKADJ_DL@
+TICKADJ_DS = @TICKADJ_DS@
+TICKADJ_MS = @TICKADJ_MS@
+TICKADJ_NI = @TICKADJ_NI@
+TIMETRIM_DB = @TIMETRIM_DB@
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+TIMETRIM_DS = @TIMETRIM_DS@
+TIMETRIM_MS = @TIMETRIM_MS@
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+YFLAGS = @YFLAGS@
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+abs_top_srcdir = @abs_top_srcdir@
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+ac_ct_CC = @ac_ct_CC@
+ac_ct_CXX = @ac_ct_CXX@
+ac_ct_DUMPBIN = @ac_ct_DUMPBIN@
+am__include = @am__include@
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+exec_prefix = @exec_prefix@
+host = @host@
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+host_vendor = @host_vendor@
+htmldir = @htmldir@
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+libexecdir = @libexecdir@
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+localstatedir = @localstatedir@
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+mkdir_p = @mkdir_p@
+oldincludedir = @oldincludedir@
+pdfdir = @pdfdir@
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+target_alias = @target_alias@
+top_build_prefix = @top_build_prefix@
+top_builddir = @top_builddir@
+top_srcdir = @top_srcdir@
+NULL = 
+BUILT_SOURCES = .deps-ver
+CLEANFILES = .deps-ver
+noinst_LIBRARIES = libntp.a @MAKE_LIBNTPSIM@
+EXTRA_LIBRARIES = libntpsim.a
+libisc_SRCS = $(srcdir)/../lib/isc/assertions.c \
+	$(srcdir)/../lib/isc/buffer.c \
+	$(srcdir)/../lib/isc/backtrace-emptytbl.c \
+	$(srcdir)/../lib/isc/backtrace.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/condition.c \
+	$(srcdir)/../lib/isc/unix/dir.c $(srcdir)/../lib/isc/error.c \
+	$(srcdir)/../lib/isc/unix/errno2result.c \
+	$(srcdir)/../lib/isc/event.c $(srcdir)/../lib/isc/unix/file.c \
+	$(srcdir)/../lib/isc/inet_ntop.c \
+	$(srcdir)/../lib/isc/inet_pton.c \
+	$(srcdir)/../lib/isc/unix/interfaceiter.c \
+	$(srcdir)/../lib/isc/lib.c $(srcdir)/../lib/isc/log.c \
+	$(srcdir)/../lib/isc/md5.c $(srcdir)/../lib/isc/nls/msgcat.c \
+	$(srcdir)/../lib/isc/unix/net.c $(srcdir)/../lib/isc/netaddr.c \
+	$(srcdir)/../lib/isc/netscope.c \
+	$(srcdir)/../lib/isc/ondestroy.c $(srcdir)/../lib/isc/random.c \
+	$(srcdir)/../lib/isc/result.c \
+	$(srcdir)/../lib/isc/unix/stdio.c \
+	$(srcdir)/../lib/isc/unix/stdtime.c \
+	$(srcdir)/../lib/isc/unix/strerror.c \
+	$(srcdir)/../lib/isc/task.c \
+	$(srcdir)/../lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/thread.c \
+	$(srcdir)/../lib/isc/unix/time.c $(srcdir)/../lib/isc/sha1.c \
+	$(srcdir)/../lib/isc/sockaddr.c $(NULL) $(am__append_1)
+libntp_a_SRCS = \
+	a_md5encrypt.c					\
+	adjtime.c					\
+	atoint.c					\
+	atolfp.c					\
+	atouint.c					\
+	audio.c						\
+	authkeys.c					\
+	authreadkeys.c					\
+	authusekey.c					\
+	bsd_strerror.c					\
+	buftvtots.c					\
+	caljulian.c					\
+	caltontp.c					\
+	calyearstart.c					\
+	clocktime.c					\
+	clocktypes.c					\
+	decodenetnum.c					\
+	dofptoa.c					\
+	dolfptoa.c					\
+	emalloc.c					\
+	findconfig.c					\
+	getopt.c					\
+	hextoint.c					\
+	hextolfp.c					\
+	humandate.c					\
+	icom.c						\
+	iosignal.c					\
+	lib_strbuf.c					\
+	machines.c					\
+	mktime.c					\
+	modetoa.c					\
+	mstolfp.c					\
+	msyslog.c					\
+	netof.c						\
+	ntp_calendar.c					\
+	ntp_intres.c					\
+	ntp_libopts.c					\
+	ntp_lineedit.c					\
+	ntp_rfc2553.c					\
+	ntp_worker.c					\
+	numtoa.c					\
+	numtohost.c					\
+	octtoint.c					\
+	prettydate.c					\
+	ntp_random.c					\
+	recvbuff.c					\
+	refnumtoa.c					\
+	snprintf.c					\
+	socket.c					\
+	socktoa.c					\
+	socktohost.c					\
+	ssl_init.c					\
+	statestr.c					\
+	strdup.c					\
+	strl_obsd.c					\
+	syssignal.c					\
+	timetoa.c					\
+	timevalops.c					\
+	uglydate.c					\
+	vint64ops.c					\
+	work_fork.c					\
+	work_thread.c					\
+	ymd2yd.c					\
+	$(libisc_SRCS)					\
+	$(NULL)
+
+libntp_a_SOURCES = systime.c $(libntp_a_SRCS)
+libntpsim_a_SOURCES = systime_s.c $(libntp_a_SRCS)
+EXTRA_libntp_a_SOURCES = adjtimex.c
+AM_CFLAGS = $(CFLAGS_NTP)
+AM_CPPFLAGS = $(NTP_INCS) $(LIBOPTS_CFLAGS) $(CPPFLAGS_NTP)
+EXTRA_DIST = README
+NTP_INCS = -I$(top_srcdir)/include -I$(top_srcdir)/lib/isc/include \
+	-I$(top_srcdir)/lib/isc/$(LIBISC_PTHREADS_NOTHREADS)/include \
+	-I$(top_srcdir)/lib/isc/unix/include
+all: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) all-am
+
+.SUFFIXES:
+.SUFFIXES: .c .lo .o .obj
+$(srcdir)/Makefile.in:  $(srcdir)/Makefile.am $(top_srcdir)/depsver.mf $(top_srcdir)/includes.mf $(am__configure_deps)
+	@for dep in $?; do \
+	  case '$(am__configure_deps)' in \
+	    *$$dep*) \
+	      ( cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh ) \
+	        && { if test -f $@; then exit 0; else break; fi; }; \
+	      exit 1;; \
+	  esac; \
+	done; \
+	echo ' cd $(top_srcdir) && $(AUTOMAKE) --foreign libntp/Makefile'; \
+	$(am__cd) $(top_srcdir) && \
+	  $(AUTOMAKE) --foreign libntp/Makefile
+.PRECIOUS: Makefile
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	@case '$?' in \
+	  *config.status*) \
+	    cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh;; \
+	  *) \
+	    echo ' cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe)'; \
+	    cd $(top_builddir) && $(SHELL) ./config.status $(subdir)/$@ $(am__depfiles_maybe);; \
+	esac;
+
+$(top_builddir)/config.status: $(top_srcdir)/configure $(CONFIG_STATUS_DEPENDENCIES)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+
+$(top_srcdir)/configure:  $(am__configure_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(ACLOCAL_M4):  $(am__aclocal_m4_deps)
+	cd $(top_builddir) && $(MAKE) $(AM_MAKEFLAGS) am--refresh
+$(am__aclocal_m4_deps):
+
+clean-noinstLIBRARIES:
+	-test -z "$(noinst_LIBRARIES)" || rm -f $(noinst_LIBRARIES)
+libntp.a: $(libntp_a_OBJECTS) $(libntp_a_DEPENDENCIES) 
+	$(AM_V_at)-rm -f libntp.a
+	$(AM_V_AR)$(libntp_a_AR) libntp.a $(libntp_a_OBJECTS) $(libntp_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libntp.a
+libntpsim.a: $(libntpsim_a_OBJECTS) $(libntpsim_a_DEPENDENCIES) 
+	$(AM_V_at)-rm -f libntpsim.a
+	$(AM_V_AR)$(libntpsim_a_AR) libntpsim.a $(libntpsim_a_OBJECTS) $(libntpsim_a_LIBADD)
+	$(AM_V_at)$(RANLIB) libntpsim.a
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/a_md5encrypt.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/adjtime.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/atolfp.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/authkeys.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/caljulian.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hextoint.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/hextolfp.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mktime.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/msgcat.Po@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/mstolfp.Po@am__quote@
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+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ntp_lineedit.Po@am__quote@
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+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) check-am
+all-am: Makefile $(LIBRARIES)
+installdirs:
+install: $(BUILT_SOURCES)
+	$(MAKE) $(AM_MAKEFLAGS) install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+	-test -z "$(CLEANFILES)" || rm -f $(CLEANFILES)
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+	-test -z "$(BUILT_SOURCES)" || rm -f $(BUILT_SOURCES)
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: all check install install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLIBRARIES ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am
+
+$(DEPDIR)/deps-ver: $(top_srcdir)/deps-ver
+	@[ -f $@ ] ||							\
+		cp $(top_srcdir)/deps-ver $@
+	@[ -w $@ ] ||							\
+		chmod ug+w $@
+	@cmp $(top_srcdir)/deps-ver $@ > /dev/null || (			\
+		$(MAKE) $(AM_MAKEFLAGS) clean &&					\
+		echo -n "Prior $(subdir)/$(DEPDIR) version " &&		\
+		cat $@ &&						\
+		rm -rf $(DEPDIR) &&					\
+		mkdir $(DEPDIR) && 					\
+		case "$(top_builddir)" in				\
+		 .)							\
+		    ./config.status Makefile depfiles			\
+		    ;;							\
+		 *)							\
+		    cd "$(top_builddir)" &&				\
+		    ./config.status $(subdir)/Makefile depfiles &&	\
+		    cd $(subdir)					\
+		    ;;							\
+		esac &&							\
+		echo -n "Cleaned $(subdir)/$(DEPDIR) version " &&	\
+		cat $(top_srcdir)/deps-ver				\
+	)
+	cp $(top_srcdir)/deps-ver $@
+
+.deps-ver: $(top_srcdir)/deps-ver
+	@[ ! -d $(DEPDIR) ] || $(MAKE) $(AM_MAKEFLAGS) $(DEPDIR)/deps-ver
+	@touch $@
+
+#
+# depsver.mf	included in Makefile.am for directories with .deps
+#
+# When building in the same directory with sources that change over
+# time, such as when tracking using bk, the .deps files can become
+# stale with respect to moved, deleted, or superceded headers.  Most
+# commonly, this would exhibit as make reporting a failure to make a
+# header file which is no longer in the location given.  To address
+# this issue, we use a deps-ver file which is updated with each change
+# that breaks old .deps files.  A copy of deps-ver is made into
+# $(DEPDIR) if not already present.  If $(DEPDIR)/deps-ver is present
+# with different contents than deps-ver, we make clean to ensure all
+# .o files built before the incompatible change are rebuilt along with
+# their updated .deps files, then remove $(DEPDIR) and recreate it as
+# empty stubs.
+#
+# It is normal when configured with --disable-dependency-tracking for
+# the DEPDIR to not have been created.  For this reason, we use the
+# intermediate target .deps-ver, which invokes make recursively if
+# DEPDIR exists.
+#
+# If you modify depsver.mf, please make the changes to the master
+# copy, the one in sntp is copied by the bootstrap script from it.
+#
+# This comment block follows rather than leads the related code so that
+# it stays with it in the generated Makefile.in and Makefile.
+#
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/libntp/README b/libntp/README
new file mode 100644
index 0000000..fac7185
--- /dev/null
+++ b/libntp/README
@@ -0,0 +1,5 @@
+README file for directory ./libntp of the NTP Version 4 distribution
+
+This directory contains the sources for the NTP library used by most
+programs in this distribution. See the README and RELNOTES files in the
+parent directory for directions on how to make this library.
diff --git a/libntp/a_md5encrypt.c b/libntp/a_md5encrypt.c
new file mode 100644
index 0000000..ffabc47
--- /dev/null
+++ b/libntp/a_md5encrypt.c
@@ -0,0 +1,137 @@
+/*
+ *	digest support for NTP, MD5 and with OpenSSL more
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "ntp_fp.h"
+#include "ntp_string.h"
+#include "ntp_stdlib.h"
+#include "ntp.h"
+#include "ntp_md5.h"	/* provides OpenSSL digest API */
+
+/*
+ * MD5authencrypt - generate message digest
+ *
+ * Returns length of MAC including key ID and digest.
+ */
+int
+MD5authencrypt(
+	int	type,		/* hash algorithm */
+	u_char	*key,		/* key pointer */
+	u_int32 *pkt,		/* packet pointer */
+	int	length		/* packet length */
+	)
+{
+	u_char	digest[EVP_MAX_MD_SIZE];
+	u_int	len;
+	EVP_MD_CTX ctx;
+
+	/*
+	 * Compute digest of key concatenated with packet. Note: the
+	 * key type and digest type have been verified when the key
+	 * was creaded.
+	 */
+	INIT_SSL();
+#if defined(OPENSSL) && OPENSSL_VERSION_NUMBER >= 0x0090700fL
+	if (!EVP_DigestInit(&ctx, EVP_get_digestbynid(type))) {
+		msyslog(LOG_ERR,
+		    "MAC encrypt: digest init failed");
+		return (0);
+	}
+#else
+	EVP_DigestInit(&ctx, EVP_get_digestbynid(type));
+#endif
+	EVP_DigestUpdate(&ctx, key, cache_secretsize);
+	EVP_DigestUpdate(&ctx, (u_char *)pkt, (u_int)length);
+	EVP_DigestFinal(&ctx, digest, &len);
+	memmove((u_char *)pkt + length + 4, digest, len);
+	return (len + 4);
+}
+
+
+/*
+ * MD5authdecrypt - verify MD5 message authenticator
+ *
+ * Returns one if digest valid, zero if invalid.
+ */
+int
+MD5authdecrypt(
+	int	type,		/* hash algorithm */
+	u_char	*key,		/* key pointer */
+	u_int32	*pkt,		/* packet pointer */
+	int	length,	 	/* packet length */
+	int	size		/* MAC size */
+	)
+{
+	u_char	digest[EVP_MAX_MD_SIZE];
+	u_int	len;
+	EVP_MD_CTX ctx;
+
+	/*
+	 * Compute digest of key concatenated with packet. Note: the
+	 * key type and digest type have been verified when the key
+	 * was created.
+	 */
+	INIT_SSL();
+#if defined(OPENSSL) && OPENSSL_VERSION_NUMBER >= 0x0090700fL
+	if (!EVP_DigestInit(&ctx, EVP_get_digestbynid(type))) {
+		msyslog(LOG_ERR,
+		    "MAC decrypt: digest init failed");
+		return (0);
+	}
+#else
+	EVP_DigestInit(&ctx, EVP_get_digestbynid(type));
+#endif
+	EVP_DigestUpdate(&ctx, key, cache_secretsize);
+	EVP_DigestUpdate(&ctx, (u_char *)pkt, (u_int)length);
+	EVP_DigestFinal(&ctx, digest, &len);
+	if ((u_int)size != len + 4) {
+		msyslog(LOG_ERR,
+		    "MAC decrypt: MAC length error");
+		return (0);
+	}
+	return !memcmp(digest, (char *)pkt + length + 4, len);
+}
+
+/*
+ * Calculate the reference id from the address. If it is an IPv4
+ * address, use it as is. If it is an IPv6 address, do a md5 on
+ * it and use the bottom 4 bytes.
+ * The result is in network byte order.
+ */
+u_int32
+addr2refid(sockaddr_u *addr)
+{
+	u_char		digest[20];
+	u_int32		addr_refid;
+	EVP_MD_CTX	ctx;
+	u_int		len;
+
+	if (IS_IPV4(addr))
+		return (NSRCADR(addr));
+
+	INIT_SSL();
+
+#if defined(OPENSSL) && OPENSSL_VERSION_NUMBER >= 0x0090700fL
+	EVP_MD_CTX_init(&ctx);
+#ifdef EVP_MD_CTX_FLAG_NON_FIPS_ALLOW
+	/* MD5 is not used as a crypto hash here. */
+	EVP_MD_CTX_set_flags(&ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW);
+#endif
+	if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL)) {
+		msyslog(LOG_ERR,
+		    "MD5 init failed");
+		exit(1);
+	}
+#else
+	EVP_DigestInit(&ctx, EVP_md5());
+#endif
+
+	EVP_DigestUpdate(&ctx, (u_char *)PSOCK_ADDR6(addr),
+	    sizeof(struct in6_addr));
+	EVP_DigestFinal(&ctx, digest, &len);
+	memcpy(&addr_refid, digest, sizeof(addr_refid));
+	return (addr_refid);
+}
diff --git a/libntp/adjtime.c b/libntp/adjtime.c
new file mode 100644
index 0000000..a8e6580
--- /dev/null
+++ b/libntp/adjtime.c
@@ -0,0 +1,386 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef MPE 
+/*
+ * MPE lacks adjtime(), so we define our own.  But note that time slewing has
+ * a sub-second accuracy bug documented in SR 5003462838 which prevents ntpd
+ * from being able to maintain clock synch.  Because of the bug, this adjtime()
+ * implementation as used by ntpd has a side-effect of screwing up the hardware
+ * PDC clock, which will need to be reset with a reboot.
+ *
+ * This problem affects all versions of MPE at the time of this writing (when
+ * MPE/iX 7.0 is the most current).  It only causes bad things to happen when
+ * doing continuous clock synchronization with ntpd; note that you CAN run ntpd
+ * with "disable ntp" in ntp.conf if you wish to provide a time server.
+ *
+ * The one-time clock adjustment functionality of ntpdate and ntp_timeset can
+ * be used without screwing up the PDC clock.
+ * 
+ */
+#include <time.h>
+
+int adjtime(struct timeval *delta, struct timeval *olddelta);
+
+int adjtime(struct timeval *delta, struct timeval *olddelta)
+
+{
+/* Documented, supported MPE system intrinsics. */
+
+extern void GETPRIVMODE(void);
+extern void GETUSERMODE(void);
+
+/* Undocumented, unsupported MPE internal functions. */
+
+extern long long current_correction_usecs(void);
+extern long long get_time(void);
+extern void get_time_change_info(long long *, char *, char *);
+extern long long pdc_time(int *);
+extern void set_time_correction(long long, int, int);
+extern long long ticks_to_micro(long long);
+
+long long big_sec, big_usec, new_correction = 0LL;
+long long prev_correction;
+
+if (delta != NULL) {
+  /* Adjustment required.  Convert delta to 64-bit microseconds. */
+  big_sec = (long)delta->tv_sec;
+  big_usec = delta->tv_usec;
+  new_correction = (big_sec * 1000000LL) + big_usec;
+}
+
+GETPRIVMODE();
+
+/* Determine how much of a previous correction (if any) we're interrupting. */
+prev_correction = current_correction_usecs();
+
+if (delta != NULL) {
+  /* Adjustment required. */
+
+#if 0
+  /* Speculative code disabled until bug SR 5003462838 is fixed.  This bug
+     prevents accurate time slewing, and indeed renders ntpd inoperable. */
+
+  if (prev_correction != 0LL) {
+    /* A previous adjustment did not complete.  Since the PDC UTC clock was
+    immediately jumped at the start of the previous adjustment, we must
+    explicitly reset it to the value of the MPE local time clock minus the
+    time zone offset. */
+
+    char pwf_since_boot, recover_pwf_time;
+    long long offset_ticks, offset_usecs, pdc_usecs_current, pdc_usecs_wanted;
+    int hpe_status;
+
+    get_time_change_info(&offset_ticks, &pwf_since_boot, &recover_pwf_time);
+    offset_usecs = ticks_to_micro(offset_ticks);
+    pdc_usecs_wanted = get_time() - offset_usecs;
+    pdc_usecs_current = pdc_time(&hpe_status);
+    if (hpe_status == 0) 
+      /* Force new PDC time by starting an extra correction. */
+      set_time_correction(pdc_usecs_wanted - pdc_usecs_current,0,1);
+  }
+#endif /* 0 */
+    
+  /* Immediately jump the PDC time to the new value, and then initiate a 
+     gradual MPE time correction slew. */
+  set_time_correction(new_correction,0,1);
+}
+
+GETUSERMODE();
+
+if (olddelta != NULL) {
+  /* Caller wants to know remaining amount of previous correction. */
+  (long)olddelta->tv_sec = prev_correction / 1000000LL;
+  olddelta->tv_usec = prev_correction % 1000000LL;
+}
+
+return 0;
+}
+#endif /* MPE */
+
+#ifdef NEED_HPUX_ADJTIME
+/*************************************************************************/
+/* (c) Copyright Tai Jin, 1988.  All Rights Reserved.                    */
+/*     Hewlett-Packard Laboratories.                                     */
+/*                                                                       */
+/* Permission is hereby granted for unlimited modification, use, and     */
+/* distribution.  This software is made available with no warranty of    */
+/* any kind, express or implied.  This copyright notice must remain      */
+/* intact in all versions of this software.                              */
+/*                                                                       */
+/* The author would appreciate it if any bug fixes and enhancements were */
+/* to be sent back to him for incorporation into future versions of this */
+/* software.  Please send changes to tai@iag.hp.com or ken@sdd.hp.com.   */
+/*************************************************************************/
+
+/*
+ * Revision history
+ *
+ * 9 Jul 94	David L. Mills, Unibergity of Delabunch
+ *		Implemented variable threshold to limit age of
+ *		corrections; reformatted code for readability.
+ */
+
+#ifndef lint
+static char RCSid[] = "adjtime.c,v 3.1 1993/07/06 01:04:42 jbj Exp";
+#endif
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <time.h>
+#include <signal.h>
+#include "adjtime.h"
+
+#define abs(x)  ((x) < 0 ? -(x) : (x))
+
+/*
+ * The following paramters are appropriate for an NTP adjustment
+ * interval of one second.
+ */
+#define ADJ_THRESH 200		/* initial threshold */
+#define ADJ_DELTA 4		/* threshold decrement */
+
+static long adjthresh;		/* adjustment threshold */
+static long saveup;		/* corrections accumulator */
+
+/*
+ * clear_adjtime - reset accumulator and threshold variables
+ */
+void
+_clear_adjtime(void)
+{
+	saveup = 0;
+	adjthresh = ADJ_THRESH;
+}
+
+/*
+ * adjtime - hp-ux copout of the standard Unix adjtime() system call
+ */
+int
+adjtime(
+	register struct timeval *delta,
+	register struct timeval *olddelta
+	)
+{
+	struct timeval newdelta;
+
+	/*
+	 * Corrections greater than one second are done immediately.
+	 */
+	if (delta->tv_sec) {
+		adjthresh = ADJ_THRESH;
+		saveup = 0;
+		return(_adjtime(delta, olddelta));
+	}
+
+	/*
+	 * Corrections less than one second are accumulated until
+	 * tripping a threshold, which is initially set at ADJ_THESH and
+	 * reduced in ADJ_DELTA steps to zero. The idea here is to
+	 * introduce large corrections quickly, while making sure that
+	 * small corrections are introduced without excessive delay. The
+	 * idea comes from the ARPAnet routing update algorithm.
+	 */
+	saveup += delta->tv_usec;
+	if (abs(saveup) >= adjthresh) {
+		adjthresh = ADJ_THRESH;
+		newdelta.tv_sec = 0;
+		newdelta.tv_usec = saveup;
+		saveup = 0;
+		return(_adjtime(&newdelta, olddelta));
+	} else {
+		adjthresh -= ADJ_DELTA;
+	}
+
+	/*
+	 * While nobody uses it, return the residual before correction,
+	 * as per Unix convention.
+	 */
+	if (olddelta)
+	    olddelta->tv_sec = olddelta->tv_usec = 0;
+	return(0);
+}
+
+/*
+ * _adjtime - does the actual work
+ */
+int
+_adjtime(
+	register struct timeval *delta,
+	register struct timeval *olddelta
+	)
+{
+	register int mqid;
+	MsgBuf msg;
+	register MsgBuf *msgp = &msg;
+
+	/*
+	 * Get the key to the adjtime message queue (note that we must
+	 * get it every time because the queue might have been removed
+	 * and recreated)
+	 */
+	if ((mqid = msgget(KEY, 0)) == -1)
+	    return (-1);
+	msgp->msgb.mtype = CLIENT;
+	msgp->msgb.tv = *delta;
+	if (olddelta)
+	    msgp->msgb.code = DELTA2;
+	else
+	    msgp->msgb.code = DELTA1;
+
+	/*
+	 * Tickle adjtimed and snatch residual, if indicated. Lots of
+	 * fanatic error checking here.
+	 */
+	if (msgsnd(mqid, &msgp->msgp, MSGSIZE, 0) == -1)
+	    return (-1);
+	if (olddelta) {
+		if (msgrcv(mqid, &msgp->msgp, MSGSIZE, SERVER, 0) == -1)
+		    return (-1);
+		*olddelta = msgp->msgb.tv;
+	}
+	return (0);
+}
+
+#else
+# if NEED_QNX_ADJTIME
+/*
+ * Emulate adjtime() using QNX ClockAdjust().
+ * Chris Burghart <burghart@atd.ucar.edu>, 11/2001
+ * Miroslaw Pabich <miroslaw_pabich@o2.pl>, 09/2005
+ *
+ * This is an implementation of adjtime() for QNX.  
+ * ClockAdjust() is used to tweak the system clock for about
+ * 1 second period until the desired delta is achieved.
+ * Time correction slew is limited to reasonable value.
+ * Internal rounding and relative errors are reduced.
+ */
+# include <sys/neutrino.h>
+# include <sys/time.h>
+
+# include <ntp_stdlib.h>
+
+/*
+ * Time correction slew limit. QNX is a hard real-time system,
+ * so don't adjust system clock too fast.
+ */
+#define CORR_SLEW_LIMIT     0.02  /* [s/s] */
+
+/*
+ * Period of system clock adjustment. It should be equal to adjtime
+ * execution period (1s). If slightly less than 1s (0.95-0.99), then olddelta
+ * residual error (introduced by execution period jitter) will be reduced.
+ */
+#define ADJUST_PERIOD       0.97  /* [s] */
+
+int 
+adjtime (struct timeval *delta, struct timeval *olddelta)
+{
+    double delta_nsec;
+    double delta_nsec_old;
+    struct _clockadjust adj;
+    struct _clockadjust oldadj;
+
+    /*
+     * How many nanoseconds are we adjusting?
+     */
+    if (delta != NULL)
+	delta_nsec = 1e9 * (long)delta->tv_sec + 1e3 * delta->tv_usec;
+    else
+	delta_nsec = 0;
+
+    /*
+     * Build the adjust structure and call ClockAdjust()
+     */
+    if (delta_nsec != 0)
+    {
+	struct _clockperiod period;
+	long count;
+	long increment;
+	long increment_limit;
+	int isneg = 0;
+
+	/*
+	 * Convert to absolute value for future processing
+	 */
+	if (delta_nsec < 0)
+	{
+	    isneg = 1;
+	    delta_nsec = -delta_nsec;
+	}
+
+	/*
+	 * Get the current clock period (nanoseconds)
+	 */
+	if (ClockPeriod (CLOCK_REALTIME, 0, &period, 0) < 0)
+	    return -1;
+
+	/*
+	 * Compute count and nanoseconds increment
+	 */
+	count = 1e9 * ADJUST_PERIOD / period.nsec;
+	increment = delta_nsec / count + .5;
+	/* Reduce relative error */
+	if (count > increment + 1)
+	{
+	    increment = 1 + (long)((delta_nsec - 1) / count);
+	    count = delta_nsec / increment + .5;
+	}
+
+	/*
+	 * Limit the adjust increment to appropriate value
+	 */
+	increment_limit = CORR_SLEW_LIMIT * period.nsec;
+	if (increment > increment_limit)
+	{
+	    increment = increment_limit;
+	    count = delta_nsec / increment + .5;
+	    /* Reduce relative error */
+	    if (increment > count + 1)
+	    {
+		count =  1 + (long)((delta_nsec - 1) / increment);
+		increment = delta_nsec / count + .5;
+	    }
+	}
+
+	adj.tick_nsec_inc = isneg ? -increment : increment;
+	adj.tick_count = count;
+    }
+    else
+    {
+	adj.tick_nsec_inc = 0;
+	adj.tick_count = 0;
+    }
+
+    if (ClockAdjust (CLOCK_REALTIME, &adj, &oldadj) < 0)
+	return -1;
+
+    /*
+     * Build olddelta
+     */
+    delta_nsec_old = (double)oldadj.tick_count * oldadj.tick_nsec_inc;
+    if (olddelta != NULL)
+    {
+	if (delta_nsec_old != 0)
+	{
+	    /* Reduce rounding error */
+	    delta_nsec_old += (delta_nsec_old < 0) ? -500 : 500;
+	    olddelta->tv_sec = delta_nsec_old / 1e9;
+	    olddelta->tv_usec = (long)(delta_nsec_old - 1e9
+				 * (long)olddelta->tv_sec) / 1000;
+	}
+	else
+	{
+	    olddelta->tv_sec = 0;
+	    olddelta->tv_usec = 0;
+	}
+    }
+
+    return 0;
+}
+# else /* no special adjtime() needed */
+int adjtime_bs;
+# endif
+#endif
diff --git a/libntp/adjtimex.c b/libntp/adjtimex.c
new file mode 100644
index 0000000..03e9d79
--- /dev/null
+++ b/libntp/adjtimex.c
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 1983 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+#ifndef lint
+_sccsid:.asciz  "11/19/91       ULTRIX  @(#)adjtime.c   6.1"
+#endif not lint
+
+#include "SYS.h"
+
+SYSCALL(adjtimex)
+        ret
+
diff --git a/libntp/atoint.c b/libntp/atoint.c
new file mode 100644
index 0000000..1064b36
--- /dev/null
+++ b/libntp/atoint.c
@@ -0,0 +1,51 @@
+/*
+ * atoint - convert an ascii string to a signed long, with error checking
+ */
+#include <config.h>
+#include <sys/types.h>
+#include <ctype.h>
+
+#include "ntp_types.h"
+#include "ntp_stdlib.h"
+
+int
+atoint(
+	const char *str,
+	long *ival
+	)
+{
+	register long u;
+	register const char *cp;
+	register int isneg;
+	register int oflow_digit;
+
+	cp = str;
+
+	if (*cp == '-') {
+		cp++;
+		isneg = 1;
+		oflow_digit = '8';
+	} else {
+		isneg = 0;
+		oflow_digit = '7';
+	}
+
+	if (*cp == '\0')
+	    return 0;
+
+	u = 0;
+	while (*cp != '\0') {
+		if (!isdigit((int)*cp))
+		    return 0;
+		if (u > 214748364 || (u == 214748364 && *cp > oflow_digit))
+		    return 0;	/* overflow */
+		u = (u << 3) + (u << 1);
+		u += *cp++ - '0';	/* ascii dependent */
+	}
+
+	if (isneg)
+	    *ival = -u;
+	else 
+	    *ival = u;
+	return 1;
+}
diff --git a/libntp/atolfp.c b/libntp/atolfp.c
new file mode 100644
index 0000000..4afeb23
--- /dev/null
+++ b/libntp/atolfp.c
@@ -0,0 +1,122 @@
+/*
+ * atolfp - convert an ascii string to an l_fp number
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_fp.h"
+#include "ntp_string.h"
+#include "ntp_assert.h"
+
+/*
+ * Powers of 10
+ */
+static u_long ten_to_the_n[10] = {
+	0,
+	10,
+	100,
+	1000,
+	10000,
+	100000,
+	1000000,
+	10000000,
+	100000000,
+	1000000000,
+};
+
+
+int
+atolfp(
+	const char *str,
+	l_fp *lfp
+	)
+{
+	register const char *cp;
+	register u_long dec_i;
+	register u_long dec_f;
+	char *ind;
+	int ndec;
+	int isneg;
+	static const char *digits = "0123456789";
+
+	NTP_REQUIRE(str != NULL);
+
+	isneg = 0;
+	dec_i = dec_f = 0;
+	ndec = 0;
+	cp = str;
+
+	/*
+	 * We understand numbers of the form:
+	 *
+	 * [spaces][-|+][digits][.][digits][spaces|\n|\0]
+	 */
+	while (isspace((int)*cp))
+	    cp++;
+	
+	if (*cp == '-') {
+		cp++;
+		isneg = 1;
+	}
+	
+	if (*cp == '+')
+	    cp++;
+
+	if (*cp != '.' && !isdigit((int)*cp))
+	    return 0;
+
+	while (*cp != '\0' && (ind = strchr(digits, *cp)) != NULL) {
+		dec_i = (dec_i << 3) + (dec_i << 1);	/* multiply by 10 */
+		dec_i += (ind - digits);
+		cp++;
+	}
+
+	if (*cp != '\0' && !isspace((int)*cp)) {
+		if (*cp++ != '.')
+		    return 0;
+	
+		while (ndec < 9 && *cp != '\0'
+		       && (ind = strchr(digits, *cp)) != NULL) {
+			ndec++;
+			dec_f = (dec_f << 3) + (dec_f << 1);	/* *10 */
+			dec_f += (ind - digits);
+			cp++;
+		}
+
+		while (isdigit((int)*cp))
+		    cp++;
+		
+		if (*cp != '\0' && !isspace((int)*cp))
+		    return 0;
+	}
+
+	if (ndec > 0) {
+		register u_long tmp;
+		register u_long bit;
+		register u_long ten_fact;
+
+		ten_fact = ten_to_the_n[ndec];
+
+		tmp = 0;
+		bit = 0x80000000;
+		while (bit != 0) {
+			dec_f <<= 1;
+			if (dec_f >= ten_fact) {
+				tmp |= bit;
+				dec_f -= ten_fact;
+			}
+			bit >>= 1;
+		}
+		if ((dec_f << 1) > ten_fact)
+		    tmp++;
+		dec_f = tmp;
+	}
+
+	if (isneg)
+	    M_NEG(dec_i, dec_f);
+	
+	lfp->l_ui = dec_i;
+	lfp->l_uf = dec_f;
+	return 1;
+}
diff --git a/libntp/atouint.c b/libntp/atouint.c
new file mode 100644
index 0000000..ab86130
--- /dev/null
+++ b/libntp/atouint.c
@@ -0,0 +1,42 @@
+#include <config.h>
+#include <sys/types.h>
+#include <ctype.h>
+
+#include "ntp_types.h"
+#include "ntp_stdlib.h"
+
+/*
+ * atouint() - convert an ascii string representing a whole base 10
+ *	       number to u_long *uval, returning TRUE if successful.
+ *	       Does not modify *uval and returns FALSE if str is not
+ *	       a positive base10 integer or is too large for a u_int32.
+ *	       this function uses u_long but should use u_int32, and
+ *	       probably be renamed.
+ */
+int
+atouint(
+	const char *str,
+	u_long *uval
+	)
+{
+	u_long u;
+	const char *cp;
+
+	cp = str;
+	if ('\0' == *cp)
+		return 0;
+
+	u = 0;
+	while ('\0' != *cp) {
+		if (!isdigit(*cp))
+			return 0;
+		if (u > 429496729 || (u == 429496729 && *cp >= '6'))
+			return 0;		/* overflow */
+		/* hand-optimized u *= 10; */
+		u = (u << 3) + (u << 1);
+		u += *cp++ - '0';		/* not '\0' */
+	}
+
+	*uval = u;
+	return 1;
+}
diff --git a/libntp/audio.c b/libntp/audio.c
new file mode 100644
index 0000000..2a56619
--- /dev/null
+++ b/libntp/audio.c
@@ -0,0 +1,504 @@
+/*
+ * audio.c - audio interface for reference clock audio drivers
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#if defined(HAVE_SYS_AUDIOIO_H) || defined(HAVE_SUN_AUDIOIO_H) || \
+    defined(HAVE_SYS_SOUNDCARD_H) || defined(HAVE_MACHINE_SOUNDCARD_H)
+
+#include "audio.h"
+#include "ntp_stdlib.h"
+#include "ntp_syslog.h"
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdio.h>
+#include "ntp_string.h"
+
+#ifdef HAVE_SYS_AUDIOIO_H
+# include <sys/audioio.h>
+#endif /* HAVE_SYS_AUDIOIO_H */
+
+#ifdef HAVE_SUN_AUDIOIO_H
+# include <sys/ioccom.h>
+# include <sun/audioio.h>
+#endif /* HAVE_SUN_AUDIOIO_H */
+
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif /* HAVE_SYS_IOCTL_H */
+
+#include <fcntl.h>
+
+#ifdef HAVE_MACHINE_SOUNDCARD_H
+# include <machine/soundcard.h>
+# define PCM_STYLE_SOUND
+#else
+# ifdef HAVE_SYS_SOUNDCARD_H
+#  include <sys/soundcard.h>
+#  define PCM_STYLE_SOUND
+# endif
+#endif
+
+#ifdef PCM_STYLE_SOUND
+# include <ctype.h>
+#endif
+
+/*
+ * Global variables
+ */
+#ifdef HAVE_SYS_AUDIOIO_H
+static struct audio_device device; /* audio device ident */
+#endif /* HAVE_SYS_AUDIOIO_H */
+#ifdef PCM_STYLE_SOUND
+# define INIT_FILE "/etc/ntp.audio"
+int agc =	SOUND_MIXER_WRITE_RECLEV; /* or IGAIN or LINE */
+int monitor =	SOUND_MIXER_WRITE_VOLUME; /* or OGAIN */
+int devmask = 0;
+int recmask = 0;
+char cf_c_dev[100], cf_i_dev[100], cf_agc[100], cf_monitor[100];
+
+const char *m_names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
+#else /* not PCM_STYLE_SOUND */
+static struct audio_info info;	/* audio device info */
+#endif /* not PCM_STYLE_SOUND */
+static int ctl_fd;		/* audio control file descriptor */
+
+#ifdef PCM_STYLE_SOUND
+static void audio_config_read (int, char **, char **);
+static int  mixer_name (const char *, int);
+
+
+int
+mixer_name(
+	const char *m_name,
+	int m_mask
+	)
+{
+	int i;
+
+	for (i = 0; i < SOUND_MIXER_NRDEVICES; ++i)
+		if (((1 << i) & m_mask)
+		    && !strcmp(m_names[i], m_name))
+			break;
+
+	return (SOUND_MIXER_NRDEVICES == i)
+	    ? -1
+	    : i
+	    ;
+}
+
+
+/*
+ * Check:
+ *
+ * /etc/ntp.audio#	where # is the unit number
+ * /etc/ntp.audio.#	where # is the unit number
+ * /etc/ntp.audio
+ *
+ * for contents of the form:
+ *
+ * idev /dev/input_device
+ * cdev /dev/control_device
+ * agc pcm_input_device {igain,line,line1,...}
+ * monitor pcm_monitor_device {ogain,...}
+ *
+ * The device names for the "agc" and "monitor" keywords
+ * can be found by running either the "mixer" program or the
+ * util/audio-pcm program.
+ *
+ * Great hunks of this subroutine were swiped from refclock_oncore.c
+ */
+static void
+audio_config_read(
+	int unit,
+	char **c_dev,	/* Control device */
+	char **i_dev	/* input device */
+	)
+{
+	FILE *fd;
+	char device[20], line[100], ab[100];
+
+	snprintf(device, sizeof(device), "%s%d", INIT_FILE, unit);
+	if ((fd = fopen(device, "r")) == NULL) {
+		printf("audio_config_read: <%s> NO\n", device);
+		snprintf(device, sizeof(device), "%s.%d", INIT_FILE,
+			 unit);
+		if ((fd = fopen(device, "r")) == NULL) {
+			printf("audio_config_read: <%s> NO\n", device);
+			snprintf(device, sizeof(device), "%s",
+				 INIT_FILE);
+			if ((fd = fopen(device, "r")) == NULL) {
+				printf("audio_config_read: <%s> NO\n",
+				       device);
+				return;
+			}
+		}
+	}
+	printf("audio_config_read: reading <%s>\n", device);
+	while (fgets(line, sizeof line, fd)) {
+		char *cp, *cc, *ca;
+		int i;
+
+		/* Remove comments */
+		if ((cp = strchr(line, '#')))
+			*cp = '\0';
+
+		/* Remove any trailing spaces */
+		for (i = strlen(line);
+		     i > 0 && isascii((int)line[i - 1]) && isspace((int)line[i - 1]);
+			)
+			line[--i] = '\0';
+
+		/* Remove leading space */
+		for (cc = line; *cc && isascii((int)*cc) && isspace((int)*cc); cc++)
+			continue;
+
+		/* Stop if nothing left */
+		if (!*cc)
+			continue;
+
+		/* Uppercase the command and find the arg */
+		for (ca = cc; *ca; ca++) {
+			if (isascii((int)*ca)) {
+				if (islower((int)*ca)) {
+					*ca = toupper(*ca);
+				} else if (isspace((int)*ca) || (*ca == '='))
+					break;
+			}
+		}
+
+		/* Remove space (and possible =) leading the arg */
+		for (; *ca && isascii((int)*ca) && (isspace((int)*ca) || (*ca == '=')); ca++)
+			continue;
+
+		if (!strncmp(cc, "IDEV", 4) &&
+		    1 == sscanf(ca, "%99s", ab)) {
+			strlcpy(cf_i_dev, ab, sizeof(cf_i_dev));
+			printf("idev <%s>\n", ab);
+		} else if (!strncmp(cc, "CDEV", 4) &&
+			   1 == sscanf(ca, "%99s", ab)) {
+			strlcpy(cf_c_dev, ab, sizeof(cf_c_dev));
+			printf("cdev <%s>\n", ab);
+		} else if (!strncmp(cc, "AGC", 3) &&
+			   1 == sscanf(ca, "%99s", ab)) {
+			strlcpy(cf_agc, ab, sizeof(cf_agc));
+			printf("agc <%s> %d\n", ab, i);
+		} else if (!strncmp(cc, "MONITOR", 7) &&
+			   1 == sscanf(ca, "%99s", ab)) {
+			strlcpy(cf_monitor, ab, sizeof(cf_monitor));
+			printf("monitor <%s> %d\n", ab, mixer_name(ab, -1));
+		}
+	}
+	fclose(fd);
+	return;
+}
+#endif /* PCM_STYLE_SOUND */
+
+/*
+ * audio_init - open and initialize audio device
+ *
+ * This code works with SunOS 4.x, Solaris 2.x, and PCM; however, it is
+ * believed generic and applicable to other systems with a minor twid
+ * or two. All it does is open the device, set the buffer size (Solaris
+ * only), preset the gain and set the input port. It assumes that the
+ * codec sample rate (8000 Hz), precision (8 bits), number of channels
+ * (1) and encoding (ITU-T G.711 mu-law companded) have been set by
+ * default.
+ */
+int
+audio_init(
+	char	*dname,		/* device name */
+	int	bufsiz,		/* buffer size */
+	int	unit		/* device unit (0-3) */
+	)
+{
+#ifdef PCM_STYLE_SOUND
+# define ACTL_DEV	"/dev/mixer%d"
+	char actl_dev[30];
+# ifdef HAVE_STRUCT_SND_SIZE
+	struct snd_size s_size;
+# endif
+# ifdef AIOGFMT
+	snd_chan_param s_c_p;
+# endif
+#endif
+	int fd;
+	int rval;
+	char *actl =
+#ifdef PCM_STYLE_SOUND
+		actl_dev
+#else
+		"/dev/audioctl"
+#endif
+		;
+
+#ifdef PCM_STYLE_SOUND
+	snprintf(actl_dev, sizeof(actl_dev), ACTL_DEV, unit);
+
+	audio_config_read(unit, &actl, &dname);
+	/* If we have values for cf_c_dev or cf_i_dev, use them. */
+	if (*cf_c_dev)
+		actl = cf_c_dev;
+	if (*cf_i_dev)
+		dname = cf_i_dev;
+#endif
+
+	/*
+	 * Open audio device
+	 */
+	fd = open(dname, O_RDWR | O_NONBLOCK, 0777);
+	if (fd < 0) {
+		msyslog(LOG_ERR, "audio_init: %s %m", dname);
+		return (fd);
+	}
+
+	/*
+	 * Open audio control device.
+	 */
+	ctl_fd = open(actl, O_RDWR);
+	if (ctl_fd < 0) {
+		msyslog(LOG_ERR, "audio_init: invalid control device <%s>",
+		    actl);
+		close(fd);
+		return(ctl_fd);
+	}
+
+	/*
+	 * Set audio device parameters.
+	 */
+#ifdef PCM_STYLE_SOUND
+	printf("audio_init: <%s> bufsiz %d\n", dname, bufsiz);
+	rval = fd;
+
+# ifdef HAVE_STRUCT_SND_SIZE
+	if (ioctl(fd, AIOGSIZE, &s_size) == -1)
+	    printf("audio_init: AIOGSIZE: %s\n", strerror(errno));
+	else
+	    printf("audio_init: orig: play_size %d, rec_size %d\n",
+		s_size.play_size, s_size.rec_size);
+
+	s_size.play_size = s_size.rec_size = bufsiz;
+	printf("audio_init: want: play_size %d, rec_size %d\n",
+	       s_size.play_size, s_size.rec_size);
+
+	if (ioctl(fd, AIOSSIZE, &s_size) == -1)
+	    printf("audio_init: AIOSSIZE: %s\n", strerror(errno));
+	else
+	    printf("audio_init: set:  play_size %d, rec_size %d\n",
+		s_size.play_size, s_size.rec_size);
+# endif /* HAVE_STRUCT_SND_SIZE */
+
+# ifdef SNDCTL_DSP_SETFRAGMENT
+	{
+		int tmp = (16 << 16) + 6; /* 16 fragments, each 2^6 bytes */
+		if (ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &tmp) == -1)
+		    printf("audio_init: SNDCTL_DSP_SETFRAGMENT: %s\n",
+			   strerror(errno));
+	}
+# endif /* SNDCTL_DSP_SETFRAGMENT */
+
+# ifdef AIOGFMT
+	if (ioctl(fd, AIOGFMT, &s_c_p) == -1)
+	    printf("audio_init: AIOGFMT: %s\n", strerror(errno));
+	else
+	    printf("audio_init: play_rate %lu, rec_rate %lu, play_format %#lx, rec_format %#lx\n",
+		s_c_p.play_rate, s_c_p.rec_rate, s_c_p.play_format, s_c_p.rec_format);
+# endif
+
+	/* Grab the device and record masks */
+
+	if (ioctl(ctl_fd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1)
+	    printf("SOUND_MIXER_READ_DEVMASK: %s\n", strerror(errno));
+	if (ioctl(ctl_fd, SOUND_MIXER_READ_RECMASK, &recmask) == -1)
+	    printf("SOUND_MIXER_READ_RECMASK: %s\n", strerror(errno));
+
+	/* validate and set any specified config file stuff */
+	if (cf_agc[0] != '\0') {
+		int i;
+
+		/* recmask */
+		i = mixer_name(cf_agc, recmask);
+		if (i >= 0)
+			agc = MIXER_WRITE(i);
+		else
+			printf("input %s not in recmask %#x\n",
+			       cf_agc, recmask);
+	}
+
+	if (cf_monitor[0] != '\0') {
+		int i;
+
+		/* devmask */
+		i = mixer_name(cf_monitor, devmask);
+		if (i >= 0)
+			monitor = MIXER_WRITE(i);
+		else
+			printf("monitor %s not in devmask %#x\n",
+			       cf_monitor, devmask);
+	}
+
+#else /* not PCM_STYLE_SOUND */
+	AUDIO_INITINFO(&info);
+	info.play.gain = AUDIO_MAX_GAIN;
+	info.play.port = AUDIO_SPEAKER;
+# ifdef HAVE_SYS_AUDIOIO_H
+	info.record.buffer_size = bufsiz;
+# endif /* HAVE_SYS_AUDIOIO_H */
+	rval = ioctl(ctl_fd, (int)AUDIO_SETINFO, (char *)&info);
+	if (rval < 0) {
+		msyslog(LOG_ERR, "audio: invalid control device parameters");
+		close(ctl_fd);
+		close(fd);
+		return(rval);
+	}
+	rval = fd;
+#endif /* not PCM_STYLE_SOUND */
+	return (rval);
+}
+
+
+/*
+ * audio_gain - adjust codec gains and port
+ */
+int
+audio_gain(
+	int gain,		/* volume level (gain) 0-255 */
+	int mongain,		/* input to output mix (monitor gain) 0-255 */
+	int port		/* selected I/O port: 1 mic/2 line in */
+	)
+{
+	int rval;
+	static int o_mongain = -1;
+	static int o_port = -1;
+
+#ifdef PCM_STYLE_SOUND
+	int l, r;
+
+	rval = 0;
+
+	r = l = 100 * gain / 255;	/* Normalize to 0-100 */
+# ifdef DEBUG
+	if (debug > 1)
+		printf("audio_gain: gain %d/%d\n", gain, l);
+# endif
+#if 0	/* not a good idea to do this; connector wiring dependency */
+	/* figure out what channel(s) to use. just nuke right for now. */
+	r = 0 ; /* setting to zero nicely mutes the channel */
+#endif
+	l |= r << 8;
+	if (cf_agc[0] != '\0')
+		rval = ioctl(ctl_fd, agc, &l);
+	else
+		if (2 == port)
+			rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_LINE, &l);
+		else
+			rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_MIC, &l);
+	if (-1 == rval) {
+		printf("audio_gain: agc write: %s\n", strerror(errno));
+		return rval;
+	}
+
+	if (o_mongain != mongain) {
+		r = l = 100 * mongain / 255;    /* Normalize to 0-100 */
+# ifdef DEBUG
+		if (debug > 1)
+			printf("audio_gain: mongain %d/%d\n", mongain, l);
+# endif
+		l |= r << 8;
+		if (cf_monitor[0] != '\0')
+			rval = ioctl(ctl_fd, monitor, &l );
+		else 
+			rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_VOLUME,
+				     &l);
+		if (-1 == rval) {
+			printf("audio_gain: mongain write: %s\n",
+			       strerror(errno));
+			return (rval);
+		}
+		o_mongain = mongain;
+	}
+
+	if (o_port != port) {
+# ifdef DEBUG
+		if (debug > 1)
+			printf("audio_gain: port %d\n", port);
+# endif
+		l = (1 << ((port == 2) ? SOUND_MIXER_LINE : SOUND_MIXER_MIC));
+		rval = ioctl(ctl_fd, SOUND_MIXER_WRITE_RECSRC, &l);
+		if (rval == -1) {
+			printf("SOUND_MIXER_WRITE_RECSRC: %s\n",
+			       strerror(errno));
+			return (rval);
+		}
+# ifdef DEBUG
+		if (debug > 1) {
+			if (ioctl(ctl_fd, SOUND_MIXER_READ_RECSRC, &l) == -1)
+				printf("SOUND_MIXER_WRITE_RECSRC: %s\n",
+				       strerror(errno));
+			else
+				printf("audio_gain: recsrc is %d\n", l);
+		}
+# endif
+		o_port = port;
+	}
+#else /* not PCM_STYLE_SOUND */
+	ioctl(ctl_fd, (int)AUDIO_GETINFO, (char *)&info);
+	info.record.encoding = AUDIO_ENCODING_ULAW;
+	info.record.error = 0;
+	info.record.gain = gain;
+	if (o_mongain != mongain)
+		o_mongain = info.monitor_gain = mongain;
+	if (o_port != port)
+		o_port = info.record.port = port;
+	rval = ioctl(ctl_fd, (int)AUDIO_SETINFO, (char *)&info);
+	if (rval < 0) {
+		msyslog(LOG_ERR, "audio_gain: %m");
+		return (rval);
+	}
+	rval = info.record.error;
+#endif /* not PCM_STYLE_SOUND */
+	return (rval);
+}
+
+
+/*
+ * audio_show - display audio parameters
+ *
+ * This code doesn't really do anything, except satisfy curiousity and
+ * verify the ioctl's work.
+ */
+void
+audio_show(void)
+{
+#ifdef PCM_STYLE_SOUND
+	int recsrc = 0;
+
+	printf("audio_show: ctl_fd %d\n", ctl_fd);
+	if (ioctl(ctl_fd, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
+	    printf("SOUND_MIXER_READ_RECSRC: %s\n", strerror(errno));
+
+#else /* not PCM_STYLE_SOUND */
+# ifdef HAVE_SYS_AUDIOIO_H
+	ioctl(ctl_fd, (int)AUDIO_GETDEV, &device);
+	printf("audio: name %s, version %s, config %s\n",
+	    device.name, device.version, device.config);
+# endif /* HAVE_SYS_AUDIOIO_H */
+	ioctl(ctl_fd, (int)AUDIO_GETINFO, (char *)&info);
+	printf(
+	    "audio: rate %d, chan %d, prec %d, code %d, gain %d, mon %d, port %d\n",
+	    info.record.sample_rate, info.record.channels,
+	    info.record.precision, info.record.encoding,
+	    info.record.gain, info.monitor_gain, info.record.port);
+	printf(
+	    "audio: samples %d, eof %d, pause %d, error %d, waiting %d, balance %d\n",
+	    info.record.samples, info.record.eof,
+	    info.record.pause, info.record.error,
+	    info.record.waiting, info.record.balance);
+#endif /* not PCM_STYLE_SOUND */
+}
+#else
+int audio_bs;
+#endif /* HAVE_{SYS_AUDIOIO,SUN_AUDIOIO,MACHINE_SOUNDCARD,SYS_SOUNDCARD}_H */
diff --git a/libntp/authkeys.c b/libntp/authkeys.c
new file mode 100644
index 0000000..7b4427c
--- /dev/null
+++ b/libntp/authkeys.c
@@ -0,0 +1,687 @@
+/*
+ * authkeys.c - routines to manage the storage of authentication keys
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <math.h>
+#include <stdio.h>
+
+#include "ntp.h"
+#include "ntp_fp.h"
+#include "ntpd.h"
+#include "ntp_lists.h"
+#include "ntp_string.h"
+#include "ntp_malloc.h"
+#include "ntp_stdlib.h"
+
+/*
+ * Structure to store keys in in the hash table.
+ */
+typedef struct savekey symkey;
+
+struct savekey {
+	symkey *	hlink;		/* next in hash bucket */
+	DECL_DLIST_LINK(symkey, llink);	/* for overall & free lists */
+	u_char *	secret;		/* shared secret */
+	u_long		lifetime;	/* remaining lifetime */
+	keyid_t		keyid;		/* key identifier */
+	u_short		type;		/* OpenSSL digest NID */
+	u_short		secretsize;	/* secret octets */
+	u_short		flags;		/* KEY_ flags that wave */
+};
+
+/* define the payload region of symkey beyond the list pointers */
+#define symkey_payload	secret
+
+#define	KEY_TRUSTED	0x001	/* this key is trusted */
+
+#ifdef DEBUG
+typedef struct symkey_alloc_tag symkey_alloc;
+
+struct symkey_alloc_tag {
+	symkey_alloc *	link;
+	void *		mem;		/* enable free() atexit */
+};
+
+symkey_alloc *	authallocs;
+#endif	/* DEBUG */
+
+static inline u_short	auth_log2(double x);
+static void		auth_resize_hashtable(void);
+static void		allocsymkey(symkey **, keyid_t,	u_short,
+				    u_short, u_long, u_short, u_char *);
+static void		freesymkey(symkey *, symkey **);
+#ifdef DEBUG
+static void		free_auth_mem(void);
+#endif
+
+symkey	key_listhead;		/* list of all in-use keys */;
+/*
+ * The hash table. This is indexed by the low order bits of the
+ * keyid. We make this fairly big for potentially busy servers.
+ */
+#define	DEF_AUTHHASHSIZE	64
+//#define	HASHMASK	((HASHSIZE)-1)
+#define	KEYHASH(keyid)	((keyid) & authhashmask)
+
+int	authhashdisabled;
+u_short	authhashbuckets = DEF_AUTHHASHSIZE;
+u_short authhashmask = DEF_AUTHHASHSIZE - 1;
+symkey **key_hash;
+
+u_long authkeynotfound;		/* keys not found */
+u_long authkeylookups;		/* calls to lookup keys */
+u_long authnumkeys;		/* number of active keys */
+u_long authkeyexpired;		/* key lifetime expirations */
+u_long authkeyuncached;		/* cache misses */
+u_long authnokey;		/* calls to encrypt with no key */
+u_long authencryptions;		/* calls to encrypt */
+u_long authdecryptions;		/* calls to decrypt */
+
+/*
+ * Storage for free symkey structures.  We malloc() such things but
+ * never free them.
+ */
+symkey *authfreekeys;
+int authnumfreekeys;
+
+#define	MEMINC	16		/* number of new free ones to get */
+
+/*
+ * The key cache. We cache the last key we looked at here.
+ */
+keyid_t	cache_keyid;		/* key identifier */
+u_char *cache_secret;		/* secret */
+u_short	cache_secretsize;	/* secret length */
+int	cache_type;		/* OpenSSL digest NID */
+u_short cache_flags;		/* flags that wave */
+
+
+/*
+ * init_auth - initialize internal data
+ */
+void
+init_auth(void)
+{
+	size_t newalloc;
+
+	/*
+	 * Initialize hash table and free list
+	 */
+	newalloc = authhashbuckets * sizeof(key_hash[0]);
+
+	key_hash = erealloc(key_hash, newalloc);
+	memset(key_hash, '\0', newalloc);
+
+	INIT_DLIST(key_listhead, llink);
+
+#ifdef DEBUG
+	atexit(&free_auth_mem);
+#endif
+}
+
+
+/*
+ * free_auth_mem - assist in leak detection by freeing all dynamic
+ *		   allocations from this module.
+ */
+#ifdef DEBUG
+static void
+free_auth_mem(void)
+{
+	symkey *	sk;
+	symkey_alloc *	alloc;
+	symkey_alloc *	next_alloc;
+
+	while (NULL != (sk = HEAD_DLIST(key_listhead, llink))) {
+		freesymkey(sk, &key_hash[KEYHASH(sk->keyid)]);
+	}
+	free(key_hash);
+	key_hash = NULL;
+	cache_keyid = 0;
+	cache_flags = 0;
+	for (alloc = authallocs; alloc != NULL; alloc = next_alloc) {
+		next_alloc = alloc->link;
+		free(alloc->mem);	
+	}
+	authfreekeys = NULL;
+	authnumfreekeys = 0;
+}
+#endif	/* DEBUG */
+
+
+/*
+ * auth_moremem - get some more free key structures
+ */
+void
+auth_moremem(
+	int	keycount
+	)
+{
+	symkey *	sk;
+	int		i;
+#ifdef DEBUG
+	void *		base;
+	symkey_alloc *	allocrec;
+# define MOREMEM_EXTRA_ALLOC	(sizeof(*allocrec))
+#else
+# define MOREMEM_EXTRA_ALLOC	(0)
+#endif
+
+	i = (keycount > 0)
+		? keycount
+		: MEMINC;
+	sk = emalloc_zero(i * sizeof(*sk) + MOREMEM_EXTRA_ALLOC);
+#ifdef DEBUG
+	base = sk;
+#endif
+	authnumfreekeys += i;
+
+	for (; i > 0; i--, sk++) {
+		LINK_SLIST(authfreekeys, sk, llink.f);
+	}
+
+#ifdef DEBUG
+	allocrec = (void *)sk;
+	allocrec->mem = base;
+	LINK_SLIST(authallocs, allocrec, link);
+#endif
+}
+
+
+/*
+ * auth_prealloc_symkeys
+ */
+void
+auth_prealloc_symkeys(
+	int	keycount
+	)
+{
+	int	allocated;
+	int	additional;
+
+	allocated = authnumkeys + authnumfreekeys;
+	additional = keycount - allocated;
+	if (additional > 0)
+		auth_moremem(additional);
+	auth_resize_hashtable();
+}
+
+
+static inline u_short
+auth_log2(double x)
+{
+	return (u_short)(log10(x) / log10(2));
+}
+
+
+/*
+ * auth_resize_hashtable
+ *
+ * Size hash table to average 4 or fewer entries per bucket initially,
+ * within the bounds of at least 4 and no more than 15 bits for the hash
+ * table index.  Populate the hash table.
+ */
+static void
+auth_resize_hashtable(void)
+{
+	u_long		totalkeys;
+	u_short		hashbits;
+	u_short		hash;
+	size_t		newalloc;
+	symkey *	sk;
+
+	totalkeys = authnumkeys + authnumfreekeys;
+	hashbits = auth_log2(totalkeys / 4.0) + 1;
+	hashbits = max(4, hashbits);
+	hashbits = min(15, hashbits);
+
+	authhashbuckets = 1 << hashbits;
+	authhashmask = authhashbuckets - 1;
+	newalloc = authhashbuckets * sizeof(key_hash[0]);
+
+	key_hash = erealloc(key_hash, newalloc);
+	memset(key_hash, '\0', newalloc);
+
+	ITER_DLIST_BEGIN(key_listhead, sk, llink, symkey)
+		hash = KEYHASH(sk->keyid);
+		LINK_SLIST(key_hash[hash], sk, hlink);
+	ITER_DLIST_END()
+}
+
+
+/*
+ * allocsymkey - common code to allocate and link in symkey
+ *
+ * secret must be allocated with a free-compatible allocator.  It is
+ * owned by the referring symkey structure, and will be free()d by
+ * freesymkey().
+ */
+static void
+allocsymkey(
+	symkey **	bucket,
+	keyid_t		id,
+	u_short		flags,
+	u_short		type,
+	u_long		lifetime,
+	u_short		secretsize,
+	u_char *	secret
+	)
+{
+	symkey *	sk;
+
+	if (authnumfreekeys < 1)
+		auth_moremem(-1);
+	UNLINK_HEAD_SLIST(sk, authfreekeys, llink.f);
+	DEBUG_ENSURE(sk != NULL);
+	sk->keyid = id;
+	sk->flags = flags;
+	sk->type = type;
+	sk->secretsize = secretsize;
+	sk->secret = secret;
+	sk->lifetime = lifetime;
+	LINK_SLIST(*bucket, sk, hlink);
+	LINK_TAIL_DLIST(key_listhead, sk, llink);
+	authnumfreekeys--;
+	authnumkeys++;
+}
+
+
+/*
+ * freesymkey - common code to remove a symkey and recycle its entry.
+ */
+static void
+freesymkey(
+	symkey *	sk,
+	symkey **	bucket
+	)
+{
+	symkey *	unlinked;
+
+	if (sk->secret != NULL) {
+		memset(sk->secret, '\0', sk->secretsize);
+		free(sk->secret);
+	}
+	UNLINK_SLIST(unlinked, *bucket, sk, hlink, symkey);
+	DEBUG_ENSURE(sk == unlinked);
+	UNLINK_DLIST(sk, llink);
+	memset((char *)sk + offsetof(symkey, symkey_payload), '\0',
+	       sizeof(*sk) - offsetof(symkey, symkey_payload));
+	LINK_SLIST(authfreekeys, sk, llink.f);
+	authnumkeys--;
+	authnumfreekeys++;
+}
+
+
+/*
+ * auth_findkey - find a key in the hash table
+ */
+struct savekey *
+auth_findkey(
+	keyid_t		id
+	)
+{
+	symkey *	sk;
+
+	for (sk = key_hash[KEYHASH(id)]; sk != NULL; sk = sk->hlink) {
+		if (id == sk->keyid) {
+			return sk;
+		}
+	}
+
+	return NULL;
+}
+
+
+/*
+ * auth_havekey - return TRUE if the key id is zero or known
+ */
+int
+auth_havekey(
+	keyid_t		id
+	)
+{
+	symkey *	sk;
+
+	if (0 == id || cache_keyid == id) {
+		return TRUE;
+	}
+
+	for (sk = key_hash[KEYHASH(id)]; sk != NULL; sk = sk->hlink) {
+		if (id == sk->keyid) {
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+
+/*
+ * authhavekey - return TRUE and cache the key, if zero or both known
+ *		 and trusted.
+ */
+int
+authhavekey(
+	keyid_t		id
+	)
+{
+	symkey *	sk;
+
+	authkeylookups++;
+	if (0 == id || cache_keyid == id) {
+		return TRUE;
+	}
+
+	/*
+	 * Seach the bin for the key. If found and the key type
+	 * is zero, somebody marked it trusted without specifying
+	 * a key or key type. In this case consider the key missing.
+	 */
+	authkeyuncached++;
+	for (sk = key_hash[KEYHASH(id)]; sk != NULL; sk = sk->hlink) {
+		if (id == sk->keyid) {
+			if (0 == sk->type) {
+				authkeynotfound++;
+				return FALSE;
+			}
+			break;
+		}
+	}
+
+	/*
+	 * If the key is not found, or if it is found but not trusted,
+	 * the key is not considered found.
+	 */
+	if (NULL == sk) {
+		authkeynotfound++;
+		return FALSE;
+	}
+	if (!(KEY_TRUSTED & sk->flags)) {
+		authnokey++;
+		return FALSE;
+	}
+
+	/*
+	 * The key is found and trusted. Initialize the key cache.
+	 */
+	cache_keyid = sk->keyid;
+	cache_type = sk->type;
+	cache_flags = sk->flags;
+	cache_secret = sk->secret;
+	cache_secretsize = sk->secretsize;
+
+	return TRUE;
+}
+
+
+/*
+ * authtrust - declare a key to be trusted/untrusted
+ */
+void
+authtrust(
+	keyid_t		id,
+	u_long		trust
+	)
+{
+	symkey **	bucket;
+	symkey *	sk;
+	u_long		lifetime;
+
+	/*
+	 * Search bin for key; if it does not exist and is untrusted,
+	 * forget it.
+	 */
+	bucket = &key_hash[KEYHASH(id)];
+	for (sk = *bucket; sk != NULL; sk = sk->hlink) {
+		if (id == sk->keyid)
+			break;
+	}
+	if (!trust && NULL == sk)
+		return;
+
+	/*
+	 * There are two conditions remaining. Either it does not
+	 * exist and is to be trusted or it does exist and is or is
+	 * not to be trusted.
+	 */	
+	if (sk != NULL) {
+		if (cache_keyid == id) {
+			cache_flags = 0;
+			cache_keyid = 0;
+		}
+
+		/*
+		 * Key exists. If it is to be trusted, say so and
+		 * update its lifetime. 
+		 */
+		if (trust > 0) {
+			sk->flags |= KEY_TRUSTED;
+			if (trust > 1)
+				sk->lifetime = current_time + trust;
+			else
+				sk->lifetime = 0;
+			return;
+		}
+
+		/* No longer trusted, return it to the free list. */
+		freesymkey(sk, bucket);
+		return;
+	}
+
+	/*
+	 * keyid is not present, but the is to be trusted.  We allocate
+	 * a new key, but do not specify a key type or secret.
+	 */
+	if (trust > 1) {
+		lifetime = current_time + trust;
+	} else {
+		lifetime = 0;
+	}
+	allocsymkey(bucket, id, KEY_TRUSTED, 0, lifetime, 0, NULL);
+}
+
+
+/*
+ * authistrusted - determine whether a key is trusted
+ */
+int
+authistrusted(
+	keyid_t		keyno
+	)
+{
+	symkey *	sk;
+	symkey **	bucket;
+
+	if (keyno == cache_keyid)
+		return !!(KEY_TRUSTED & cache_flags);
+
+	authkeyuncached++;
+	bucket = &key_hash[KEYHASH(keyno)];
+	for (sk = *bucket; sk != NULL; sk = sk->hlink) {
+		if (keyno == sk->keyid)
+			break;
+	}
+	if (NULL == sk || !(KEY_TRUSTED & sk->flags)) {
+		authkeynotfound++;
+		return FALSE;
+	}
+	return TRUE;
+}
+
+
+void
+MD5auth_setkey(
+	keyid_t keyno,
+	int	keytype,
+	const u_char *key,
+	int	len
+	)
+{
+	symkey *	sk;
+	symkey **	bucket;
+	u_char *	secret;
+	size_t		secretsize;
+	
+	DEBUG_ENSURE(keytype <= USHRT_MAX);
+	DEBUG_ENSURE(len < 4 * 1024);
+	len = max(0, len);
+	/*
+	 * See if we already have the key.  If so just stick in the
+	 * new value.
+	 */
+	bucket = &key_hash[KEYHASH(keyno)];
+	for (sk = *bucket; sk != NULL; sk = sk->hlink) {
+		if (keyno == sk->keyid) {
+			sk->type = (u_short)keytype;
+			secretsize = len;
+			sk->secretsize = (u_short)secretsize;
+#ifndef DISABLE_BUG1243_FIX
+			memcpy(sk->secret, key, secretsize);
+#else
+			strlcpy((char *)sk->secret, (const char *)key,
+				secretsize);
+#endif
+			if (cache_keyid == keyno) {
+				cache_flags = 0;
+				cache_keyid = 0;
+			}
+			return;
+		}
+	}
+
+	/*
+	 * Need to allocate new structure.  Do it.
+	 */
+	secretsize = len;
+	secret = emalloc(secretsize);
+#ifndef DISABLE_BUG1243_FIX
+	memcpy(secret, key, secretsize);
+#else
+	strlcpy((char *)secret, (const char *)key, secretsize);
+#endif
+	allocsymkey(bucket, keyno, 0, (u_short)keytype, 0,
+		    (u_short)secretsize, secret);
+#ifdef DEBUG
+	if (debug >= 4) {
+		size_t	j;
+
+		printf("auth_setkey: key %d type %d len %d ", (int)keyno,
+		    keytype, (int)secretsize);
+		for (j = 0; j < secretsize; j++)
+			printf("%02x", secret[j]);
+		printf("\n");
+	}	
+#endif
+}
+
+
+/*
+ * auth_delkeys - delete non-autokey untrusted keys, and clear all info
+ *                except the trusted bit of non-autokey trusted keys, in
+ *		  preparation for rereading the keys file.
+ */
+void
+auth_delkeys(void)
+{
+	symkey *	sk;
+
+	ITER_DLIST_BEGIN(key_listhead, sk, llink, symkey)
+		if (sk->keyid > NTP_MAXKEY) {	/* autokey */
+			continue;
+		}
+
+		/*
+		 * Don't lose info as to which keys are trusted.
+		 */
+		if (KEY_TRUSTED & sk->flags) {
+			if (sk->secret != NULL) {
+				memset(sk->secret, '\0', sk->secretsize);
+				free(sk->secret);
+			}
+			sk->secretsize = 0;
+			sk->lifetime = 0;
+		} else {
+			freesymkey(sk, &key_hash[KEYHASH(sk->keyid)]);
+		}
+	ITER_DLIST_END()
+}
+
+
+/*
+ * auth_agekeys - delete keys whose lifetimes have expired
+ */
+void
+auth_agekeys(void)
+{
+	symkey *	sk;
+
+	ITER_DLIST_BEGIN(key_listhead, sk, llink, symkey)
+		if (sk->lifetime > 0 && current_time > sk->lifetime) {
+			freesymkey(sk, &key_hash[KEYHASH(sk->keyid)]);
+			authkeyexpired++;
+		}
+	ITER_DLIST_END()
+	DPRINTF(1, ("auth_agekeys: at %lu keys %lu expired %lu\n",
+		    current_time, authnumkeys, authkeyexpired));
+}
+
+
+/*
+ * authencrypt - generate message authenticator
+ *
+ * Returns length of authenticator field, zero if key not found.
+ */
+int
+authencrypt(
+	keyid_t		keyno,
+	u_int32 *	pkt,
+	int		length
+	)
+{\
+	/*
+	 * A zero key identifier means the sender has not verified
+	 * the last message was correctly authenticated. The MAC
+	 * consists of a single word with value zero.
+	 */
+	authencryptions++;
+	pkt[length / 4] = htonl(keyno);
+	if (0 == keyno) {
+		return 4;
+	}
+	if (!authhavekey(keyno)) {
+		return 0;
+	}
+
+	return MD5authencrypt(cache_type, cache_secret, pkt, length);
+}
+
+
+/*
+ * authdecrypt - verify message authenticator
+ *
+ * Returns TRUE if authenticator valid, FALSE if invalid or not found.
+ */
+int
+authdecrypt(
+	keyid_t		keyno,
+	u_int32 *	pkt,
+	int		length,
+	int		size
+	)
+{
+	/*
+	 * A zero key identifier means the sender has not verified
+	 * the last message was correctly authenticated.  For our
+	 * purpose this is an invalid authenticator.
+	 */
+	authdecryptions++;
+	if (0 == keyno || !authhavekey(keyno) || size < 4) {
+		return FALSE;
+	}
+
+	return MD5authdecrypt(cache_type, cache_secret, pkt, length,
+			      size);
+}
diff --git a/libntp/authreadkeys.c b/libntp/authreadkeys.c
new file mode 100644
index 0000000..9b02119
--- /dev/null
+++ b/libntp/authreadkeys.c
@@ -0,0 +1,207 @@
+/*
+ * authreadkeys.c - routines to support the reading of the key file
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_fp.h"
+#include "ntp.h"
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+
+#ifdef OPENSSL
+#include "openssl/objects.h"
+#include "openssl/evp.h"
+#endif	/* OPENSSL */
+
+/* Forwards */
+static char *nexttok (char **);
+
+/*
+ * nexttok - basic internal tokenizing routine
+ */
+static char *
+nexttok(
+	char	**str
+	)
+{
+	register char *cp;
+	char *starttok;
+
+	cp = *str;
+
+	/*
+	 * Space past white space
+	 */
+	while (*cp == ' ' || *cp == '\t')
+		cp++;
+	
+	/*
+	 * Save this and space to end of token
+	 */
+	starttok = cp;
+	while (*cp != '\0' && *cp != '\n' && *cp != ' '
+	       && *cp != '\t' && *cp != '#')
+		cp++;
+	
+	/*
+	 * If token length is zero return an error, else set end of
+	 * token to zero and return start.
+	 */
+	if (starttok == cp)
+		return NULL;
+	
+	if (*cp == ' ' || *cp == '\t')
+		*cp++ = '\0';
+	else
+		*cp = '\0';
+	
+	*str = cp;
+	return starttok;
+}
+
+
+/*
+ * authreadkeys - (re)read keys from a file.
+ */
+int
+authreadkeys(
+	const char *file
+	)
+{
+	FILE	*fp;
+	char	*line;
+	char	*token;
+	keyid_t	keyno;
+	int	keytype;
+	char	buf[512];		/* lots of room for line */
+	u_char	keystr[32];		/* Bug 2537 */
+	int	len;
+	int	j;
+
+	/*
+	 * Open file.  Complain and return if it can't be opened.
+	 */
+	fp = fopen(file, "r");
+	if (fp == NULL) {
+		msyslog(LOG_ERR, "authreadkeys: file %s: %m",
+		    file);
+		return (0);
+	}
+	INIT_SSL();
+
+	/*
+	 * Remove all existing keys
+	 */
+	auth_delkeys();
+
+	/*
+	 * Now read lines from the file, looking for key entries
+	 */
+	while ((line = fgets(buf, sizeof buf, fp)) != NULL) {
+		token = nexttok(&line);
+		if (token == NULL)
+			continue;
+		
+		/*
+		 * First is key number.  See if it is okay.
+		 */
+		keyno = atoi(token);
+		if (keyno == 0) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: cannot change key %s", token);
+			continue;
+		}
+
+		if (keyno > NTP_MAXKEY) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: key %s > %d reserved for Autokey",
+			    token, NTP_MAXKEY);
+			continue;
+		}
+
+		/*
+		 * Next is keytype. See if that is all right.
+		 */
+		token = nexttok(&line);
+		if (token == NULL) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: no key type for key %d", keyno);
+			continue;
+		}
+#ifdef OPENSSL
+		/*
+		 * The key type is the NID used by the message digest 
+		 * algorithm. There are a number of inconsistencies in
+		 * the OpenSSL database. We attempt to discover them
+		 * here and prevent use of inconsistent data later.
+		 */
+		keytype = keytype_from_text(token, NULL);
+		if (keytype == 0) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: invalid type for key %d", keyno);
+			continue;
+		}
+		if (EVP_get_digestbynid(keytype) == NULL) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: no algorithm for key %d", keyno);
+			continue;
+		}
+#else	/* !OPENSSL follows */
+
+		/*
+		 * The key type is unused, but is required to be 'M' or
+		 * 'm' for compatibility.
+		 */
+		if (!(*token == 'M' || *token == 'm')) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: invalid type for key %d", keyno);
+			continue;
+		}
+		keytype = KEY_TYPE_MD5;
+#endif	/* !OPENSSL */
+
+		/*
+		 * Finally, get key and insert it. If it is longer than 20
+		 * characters, it is a binary string encoded in hex;
+		 * otherwise, it is a text string of printable ASCII
+		 * characters.
+		 */
+		token = nexttok(&line);
+		if (token == NULL) {
+			msyslog(LOG_ERR,
+			    "authreadkeys: no key for key %d", keyno);
+			continue;
+		}
+		len = strlen(token);
+		if (len <= 20) {	/* Bug 2537 */
+			MD5auth_setkey(keyno, keytype, (u_char *)token, len);
+		} else {
+			char	hex[] = "0123456789abcdef";
+			u_char	temp;
+			char	*ptr;
+			int	jlim;
+
+			jlim = min(len, 2 * sizeof(keystr));
+			for (j = 0; j < jlim; j++) {
+				ptr = strchr(hex, tolower(token[j]));
+				if (ptr == NULL)
+					break;	/* abort decoding */
+				temp = (u_char)(ptr - hex);
+				if (j & 1)
+					keystr[j / 2] |= temp;
+				else
+					keystr[j / 2] = temp << 4;
+			}
+			if (j < jlim) {
+				msyslog(LOG_ERR,
+					"authreadkeys: invalid hex digit for key %d", keyno);
+				continue;
+			}
+			MD5auth_setkey(keyno, keytype, keystr, jlim / 2);
+		}
+	}
+	fclose(fp);
+	return (1);
+}
diff --git a/libntp/authusekey.c b/libntp/authusekey.c
new file mode 100644
index 0000000..c1d0813
--- /dev/null
+++ b/libntp/authusekey.c
@@ -0,0 +1,34 @@
+/*
+ * authusekey - decode a key from ascii and use it
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_types.h"
+#include "ntp_string.h"
+#include "ntp_stdlib.h"
+
+/*
+ * Types of ascii representations for keys.  "Standard" means a 64 bit
+ * hex number in NBS format, i.e. with the low order bit of each byte
+ * a parity bit.  "NTP" means a 64 bit key in NTP format, with the
+ * high order bit of each byte a parity bit.  "Ascii" means a 1-to-8
+ * character string whose ascii representation is used as the key.
+ */
+int
+authusekey(
+	keyid_t keyno,
+	int keytype,
+	const u_char *str
+	)
+{
+	int len;
+
+	len = strlen((const char *)str);
+	if (0 == len)
+		return 0;
+
+	MD5auth_setkey(keyno, keytype, str, len);
+	return 1;
+}
diff --git a/libntp/bsd_strerror.c b/libntp/bsd_strerror.c
new file mode 100644
index 0000000..5ace9aa
--- /dev/null
+++ b/libntp/bsd_strerror.c
@@ -0,0 +1,49 @@
+#include <config.h>
+
+#if !HAVE_STRERROR
+/*
+ * Copyright (c) 1988 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms are permitted
+ * provided that the above copyright notice and this paragraph are
+ * duplicated in all such forms and that any documentation,
+ * advertising materials, and other materials related to such
+ * distribution and use acknowledge that the software was developed
+ * by the University of California, Berkeley.  The name of the
+ * University may not be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
+ * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static const char sccsid[] = "@(#)strerror.c	5.1 (Berkeley) 4/9/89";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "l_stdlib.h"
+
+char *
+strerror(
+	int errnum
+	)
+{
+	extern int sys_nerr;
+	extern char *sys_errlist[];
+	static char ebuf[20];
+
+	if ((unsigned int)errnum < sys_nerr)
+		return sys_errlist[errnum];
+	snprintf(ebuf, sizeof(ebuf), "Unknown error: %d", errnum);
+
+	return ebuf;
+}
+#else
+int strerror_bs;
+#endif
diff --git a/libntp/buftvtots.c b/libntp/buftvtots.c
new file mode 100644
index 0000000..a77e9f7
--- /dev/null
+++ b/libntp/buftvtots.c
@@ -0,0 +1,38 @@
+/*
+ * buftvtots - pull a Unix-format (struct timeval) time stamp out of
+ *	       an octet stream and convert it to a l_fp time stamp.
+ *	       This is useful when using the clock line discipline.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "ntp_fp.h"
+#include "ntp_string.h"
+#include "timevalops.h"
+
+#ifndef SYS_WINNT
+int
+buftvtots(
+	const char *bufp,
+	l_fp *ts
+	)
+{
+	struct timeval tv;
+
+	/*
+	 * copy to adhere to alignment restrictions
+	 */
+	memcpy(&tv, bufp, sizeof(tv));
+
+	/*
+	 * and use it
+	 */
+	if (tv.tv_usec > MICROSECONDS - 1)
+		return FALSE;
+
+	*ts = tval_stamp_to_lfp(tv);
+
+	return TRUE;
+}
+#endif	/* !SYS_WINNT */
diff --git a/libntp/caljulian.c b/libntp/caljulian.c
new file mode 100644
index 0000000..6463699
--- /dev/null
+++ b/libntp/caljulian.c
@@ -0,0 +1,41 @@
+/*
+ * caljulian - determine the Julian date from an NTP time.
+ *
+ * (Note: since we use the GREGORIAN calendar, this should be renamed to
+ * 'calgregorian' eventually...)
+ */
+#include <config.h>
+#include <sys/types.h>
+
+#include "ntp_types.h"
+#include "ntp_calendar.h"
+
+#if !(defined(ISC_CHECK_ALL) || defined(ISC_CHECK_NONE) || \
+      defined(ISC_CHECK_ENSURE) || defined(ISC_CHECK_INSIST) || \
+      defined(ISC_CHECK_INVARIANT))
+# define ISC_CHECK_ALL
+#endif
+
+#include "ntp_assert.h"
+
+void
+caljulian(
+	uint32_t		ntp,
+	struct calendar *	jt
+	)
+{
+	vint64		vlong;
+	ntpcal_split	split;
+	
+	
+	NTP_INSIST(NULL != jt);
+
+	/*
+	 * Unfold ntp time around current time into NTP domain. Split
+	 * into days and seconds, shift days into CE domain and
+	 * process the parts.
+	 */
+	vlong = ntpcal_ntp_to_ntp(ntp, NULL);
+	split = ntpcal_daysplit(&vlong);
+	ntpcal_daysplit_to_date(jt, &split, DAY_NTP_STARTS);
+}
diff --git a/libntp/caltontp.c b/libntp/caltontp.c
new file mode 100644
index 0000000..4246a6a
--- /dev/null
+++ b/libntp/caltontp.c
@@ -0,0 +1,68 @@
+/*
+ * caltontp - convert a date to an NTP time
+ */
+#include <config.h>
+#include <sys/types.h>
+
+#include "ntp_types.h"
+#include "ntp_calendar.h"
+#include "ntp_stdlib.h"
+#include "ntp_assert.h"
+#include "ntp_unixtime.h"
+
+/*
+ * Juergen Perlinger, 2008-11-12
+ * Add support for full calendar calculatios. If the day-of-year is provided
+ * (that is, not zero) it will be used instead of month and day-of-month;
+ * otherwise a full turn through the calendar calculations will be taken.
+ *
+ * I know that Harlan Stenn likes to see assertions in production code, and I
+ * agree there, but it would be a tricky thing here. The algorithm is quite
+ * capable of producing sensible answers even to seemingly weird inputs: the
+ * date <any year here>-03-00, the 0.th March of the year, will be automtically
+ * treated as the last day of February, no matter whether the year is a leap
+ * year or not. So adding constraints is merely for the benefit of the callers,
+ * because the only thing we can check for consistency is our input, produced
+ * by somebody else.
+ *
+ * BTW: A total roundtrip using 'caljulian' would be a quite shaky thing:
+ * Because of the truncation of the NTP time stamp to 32 bits and the epoch
+ * unfolding around the current time done by 'caljulian' the roundtrip does
+ * *not* necessarily reproduce the input, especially if the time spec is more
+ * than 68 years off from the current time...
+ */
+
+uint32_t
+caltontp(
+	const struct calendar *jt
+	)
+{
+	int32_t eraday;	/* CE Rata Die number	*/
+	vint64  ntptime;/* resulting NTP time	*/
+
+	NTP_INSIST(jt != NULL);
+
+	NTP_REQUIRE(jt->month <= 13);	/* permit month 0..13! */
+	NTP_REQUIRE(jt->monthday <= 32);
+	NTP_REQUIRE(jt->yearday <= 366);
+	NTP_REQUIRE(jt->hour <= 24);
+	NTP_REQUIRE(jt->minute <= MINSPERHR);
+	NTP_REQUIRE(jt->second <= SECSPERMIN);
+
+	/*
+	 * First convert the date to he corresponding RataDie
+	 * number. If yearday is not zero, assume that it contains a
+	 * useable value and avoid all calculations involving month
+	 * and day-of-month. Do a full evaluation otherwise.
+	 */
+	if (jt->yearday)
+		eraday = ntpcal_year_to_ystart(jt->year)
+		       + jt->yearday - 1;
+	else
+		eraday = ntpcal_date_to_rd(jt);
+
+	ntptime = ntpcal_dayjoin(eraday - DAY_NTP_STARTS,
+				 ntpcal_etime_to_seconds(jt->hour, jt->minute,
+							 jt->second));
+	return ntptime.d_s.lo;
+}
diff --git a/libntp/calyearstart.c b/libntp/calyearstart.c
new file mode 100644
index 0000000..9e3f58f
--- /dev/null
+++ b/libntp/calyearstart.c
@@ -0,0 +1,88 @@
+/*
+ * calyearstart - determine the NTP time at midnight of January 1 in
+ *		  the year of the given date.
+ */
+#include <config.h>
+#include <sys/types.h>
+
+#include "ntp_types.h"
+#include "ntp_calendar.h"
+#include "ntp_stdlib.h"
+#include "ntp_assert.h"
+
+/*
+ * Juergen Perlinger, 2010-05-02
+ *
+ * Redone in terms of the calendar functions. It's rather simple:
+ * - expand the NTP time stamp
+ * - split into days and seconds since midnight, dropping the partial day
+ * - get full number of days before year start in NTP epoch
+ * - convert to seconds, truncated to 32 bits.
+ */
+u_int32
+calyearstart(u_int32 ntptime, const time_t *pivot)
+{
+	u_int32      ndays; /* elapsed days since NTP starts */
+	vint64       vlong;
+	ntpcal_split split;
+
+	vlong = ntpcal_ntp_to_ntp(ntptime, pivot);
+	split = ntpcal_daysplit(&vlong);
+	ndays = ntpcal_rd_to_ystart(split.hi + DAY_NTP_STARTS)
+	      - DAY_NTP_STARTS;
+
+	return (u_int32)(ndays * SECSPERDAY);
+}
+
+/*
+ * calmonthstart - get NTP time at midnight of the first day of the
+ * current month.
+ */
+u_int32
+calmonthstart(u_int32 ntptime, const time_t *pivot)
+{
+	u_int32      ndays; /* elapsed days since NTP starts */
+	vint64       vlong;
+	ntpcal_split split;
+
+	vlong = ntpcal_ntp_to_ntp(ntptime, pivot);
+	split = ntpcal_daysplit(&vlong);
+	ndays = ntpcal_rd_to_mstart(split.hi + DAY_NTP_STARTS)
+	      - DAY_NTP_STARTS;
+
+	return (u_int32)(ndays * SECSPERDAY);
+}
+
+/*
+ * calweekstart - get NTP time at midnight of the last monday on or
+ * before the current date.
+ */
+u_int32
+calweekstart(u_int32 ntptime, const time_t *pivot)
+{
+	u_int32      ndays; /* elapsed days since NTP starts */
+	vint64       vlong;
+	ntpcal_split split;
+
+	vlong = ntpcal_ntp_to_ntp(ntptime, pivot);
+	split = ntpcal_daysplit(&vlong);
+	ndays = ntpcal_weekday_le(split.hi + DAY_NTP_STARTS, CAL_MONDAY)
+	      - DAY_NTP_STARTS;
+
+	return (u_int32)(ndays * SECSPERDAY);
+}
+
+/*
+ * caldaystart - get NTP time at midnight of the current day.
+ */
+u_int32
+caldaystart(u_int32 ntptime, const time_t *pivot)
+{
+	vint64       vlong;
+	ntpcal_split split;
+
+	vlong = ntpcal_ntp_to_ntp(ntptime, pivot);
+	split = ntpcal_daysplit(&vlong);
+	
+	return ntptime - split.lo;
+}
diff --git a/libntp/clocktime.c b/libntp/clocktime.c
new file mode 100644
index 0000000..c1a3ba0
--- /dev/null
+++ b/libntp/clocktime.c
@@ -0,0 +1,149 @@
+/*
+ * clocktime - compute the NTP date from a day of year, hour, minute
+ *	       and second.
+ */
+#include <config.h>
+#include "ntp_fp.h"
+#include "ntp_unixtime.h"
+#include "ntp_stdlib.h"
+#include "ntp_calendar.h"
+
+/*
+ * We check that the time be within CLOSETIME seconds of the receive
+ * time stamp.	This is about 4 hours, which hopefully should be wide
+ * enough to collect most data, while close enough to keep things from
+ * getting confused.
+ */
+#define	CLOSETIME	(4u*60u*60u)
+
+/*
+ * Since we try to match years, the result of a full search will not
+ * change when we are already less than a half year from the receive
+ * time stamp.	Since the length of a year is variable we use a
+ * slightly narrower limit; this might require a full evaluation near
+ * the edge, but will make sure we always get the correct result.
+ */
+#define NEARTIME	(182u * SECSPERDAY)
+
+/*
+ * local calendar helpers
+ */
+static int32   ntp_to_year(u_int32);
+static u_int32 year_to_ntp(int32);
+
+/*
+ * Take a time spec given as day-of-year, hour, minute and second as
+ * well as a GMT offset in hours and convert it to a NTP time stamp in
+ * '*ts_ui'. The value will be in the range (rec_ui-0.5yrs) to
+ * (rec_ui+0.5yrs). A hint for the current start-of-year will be
+ * read from '*yearstart'.
+ *
+ * On return '*ts_ui' will always the best matching solution, and
+ * '*yearstart' will receive the associated start-of-year.
+ *
+ * The function will tell if the result in 'ts_ui' is in CLOSETIME
+ * (+/-4hrs) around the receive time by returning a non-zero value.
+ *
+ * Note: The function puts no constraints on the value ranges for the
+ * time specification, but evaluates the effective seconds in
+ * 32-bit arithmetic.
+ */
+int
+clocktime(
+	int	yday	 ,	/* day-of-year */
+	int	hour	 ,	/* hour of day */
+	int	minute	 ,	/* minute of hour */
+	int	second	 ,	/* second of minute */
+	int	tzoff	 ,	/* hours west of GMT */
+	u_int32 rec_ui	 ,	/* pivot value */
+	u_long *yearstart,	/* cached start-of-year, should be fixed to u_int32 */
+	u_int32 *ts_ui	 )	/* effective time stamp */
+{
+	u_int32 ystt[3];	/* year start */
+	u_int32 test[3];	/* result time stamp */
+	u_int32 diff[3];	/* abs difference to receive */
+	int32 y, tmp, idx, min;
+	
+	/*
+	 * Compute the offset into the year in seconds.	 Note that
+	 * this could come out to be a negative number.
+	 */
+	tmp = ((int32)second +
+	       SECSPERMIN * ((int32)minute +
+			     MINSPERHR * ((int32)hour + (int32)tzoff +
+					  HRSPERDAY * ((int32)yday - 1))));
+	/*
+	 * Based on the cached year start, do a first attempt. Be
+	 * happy and return if this gets us better than NEARTIME to
+	 * the receive time stamp. Do this only if the cached year
+	 * start is not zero, which will not happen after 1900 for the
+	 * next few thousand years.
+	 */
+	if (*yearstart) {
+		/* -- get time stamp of potential solution */
+		test[0] = (u_int32)(*yearstart) + tmp;
+		/* -- calc absolute difference to receive time */
+		diff[0] = test[0] - rec_ui;
+		if (diff[0] >= 0x80000000u)
+			diff[0] = ~diff[0] + 1;
+		/* -- can't get closer if diff < NEARTIME */
+		if (diff[0] < NEARTIME) {
+			*ts_ui = test[0];
+			return diff[0] < CLOSETIME;
+		}
+	}
+
+	/*
+	 * Now the dance begins. Based on the receive time stamp and
+	 * the seconds offset in 'tmp', we make an educated guess
+	 * about the year to start with. This takes us on the spot
+	 * with a fuzz of +/-1 year.
+	 *
+	 * We calculate the effective timestamps for the three years
+	 * around the guess and select the entry with the minimum
+	 * absolute difference to the receive time stamp.
+	 */
+	y = ntp_to_year(rec_ui - tmp);
+	for (idx = 0; idx < 3; idx++) {
+		/* -- get year start of potential solution */
+		ystt[idx] = year_to_ntp(y + idx - 1);
+		/* -- get time stamp of potential solution */
+		test[idx] = ystt[idx] + tmp;
+		/* -- calc absolute difference to receive time */
+		diff[idx] = test[idx] - rec_ui;
+		if (diff[idx] >= 0x80000000u)
+			diff[idx] = ~diff[idx] + 1;
+	}
+	/* -*- assume current year fits best, then search best fit */
+	for (min = 1, idx = 0; idx < 3; idx++)
+		if (diff[idx] < diff[min])
+			min = idx;
+	/* -*- store results and update year start */
+	*ts_ui	   = test[min];
+	*yearstart = ystt[min];
+
+	/* -*- tell if we could get into CLOSETIME*/
+	return diff[min] < CLOSETIME;
+}
+
+static int32
+ntp_to_year(
+	u_int32 ntp)
+{
+	vint64	     t;
+	ntpcal_split s;
+
+	t = ntpcal_ntp_to_ntp(ntp, NULL);
+	s = ntpcal_daysplit(&t);
+	s = ntpcal_split_eradays(s.hi + DAY_NTP_STARTS - 1, NULL);
+	return s.hi + 1;
+}
+
+static u_int32
+year_to_ntp(
+	int32 year)
+{
+	u_int32 days;
+	days = ntpcal_days_in_years(year-1) - DAY_NTP_STARTS + 1;
+	return days * SECSPERDAY;
+}
diff --git a/libntp/clocktypes.c b/libntp/clocktypes.c
new file mode 100644
index 0000000..de7f6b4
--- /dev/null
+++ b/libntp/clocktypes.c
@@ -0,0 +1,123 @@
+/*
+ * Data for pretty printing clock types
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "ntp.h"
+#include "lib_strbuf.h"
+#include "ntp_refclock.h"
+#include "ntp_stdlib.h"
+
+struct clktype clktypes[] = {
+	{ REFCLK_NONE,		"unspecified type (0)",
+	  "UNKNOWN" },
+	{ REFCLK_LOCALCLOCK,	"Undisciplined local clock (1)",
+	  "LOCAL" },
+	{ REFCLK_GPS_TRAK,	"TRAK 8810 GPS Receiver (2)",
+	  "GPS_TRAK" },
+	{ REFCLK_WWV_PST,	"PSTI/Traconex WWV/WWVH Receiver (3)",
+	  "WWV_PST" },
+	{ REFCLK_SPECTRACOM,	"Spectracom (generic) Receivers (4)",
+	  "SPECTRACOM" },
+	{ REFCLK_TRUETIME,	"TrueTime (generic) Receivers (5)",
+	  "TRUETIME" },
+	{ REFCLK_IRIG_AUDIO,	"IRIG Audio Decoder (6)",
+	  "IRIG_AUDIO" },
+	{ REFCLK_CHU_AUDIO,	"CHU Audio Demodulator/Decoder (7)",
+	  "CHU_AUDIO" },
+	{ REFCLK_PARSE,		"Generic reference clock driver (8)",
+	  "GENERIC" },
+	{ REFCLK_GPS_MX4200,	"Magnavox MX4200 GPS Receiver (9)",
+	  "GPS_MX4200" },
+	{ REFCLK_GPS_AS2201,	"Austron 2201A GPS Receiver (10)",
+	  "GPS_AS2201" },
+	{ REFCLK_GPS_ARBITER,	"Arbiter 1088A/B GPS Receiver (11)",
+	  "GPS_ARBITER" },
+	{ REFCLK_IRIG_TPRO,	"KSI/Odetics TPRO/S IRIG Interface (12)",
+	  "IRIG_TPRO" },
+	{ REFCLK_ATOM_LEITCH,	"Leitch CSD 5300 Master Clock Controller (13)",
+	  "ATOM_LEITCH" },
+	{ REFCLK_MSF_EES,	"EES M201 MSF Receiver (14)",
+	  "MSF_EES" },
+	{ REFCLK_NONE,		"not used (15)",
+	  "NOT_USED" },
+	{ REFCLK_IRIG_BANCOMM,	"Bancomm GPS/IRIG Receiver (16)",
+	  "GPS_BANC" },
+	{ REFCLK_GPS_DATUM,	"Datum Precision Time System (17)",
+	  "GPS_DATUM" },
+	{ REFCLK_ACTS,		"Automated Computer Time Service (18)",
+	  "ACTS_MODEM" },
+	{ REFCLK_WWV_HEATH,	"Heath WWV/WWVH Receiver (19)",
+	  "WWV_HEATH" },
+	{ REFCLK_GPS_NMEA,	"Generic NMEA GPS Receiver (20)",
+	  "GPS_NMEA" },
+	{ REFCLK_GPS_VME,	"TrueTime GPS-VME Interface (21)",
+	  "GPS_VME" },
+	{ REFCLK_ATOM_PPS,	"PPS Clock Discipline (22)",
+	  "PPS" },
+	{ REFCLK_NONE,		"not used (23)",
+	  "NOT_USED" },
+	{ REFCLK_NONE,		"not used (24)",
+	  "NOT_USED" },
+	{ REFCLK_NONE,		"not used (25)",
+	  "NOT_USED" },
+	{ REFCLK_GPS_HP,	"HP 58503A GPS Time & Frequency Receiver (26)",
+	  "GPS_HP" },
+	{ REFCLK_ARCRON_MSF,	"ARCRON MSF (and DCF77) Receiver (27)",
+	  "MSF_ARCRON" },
+	{ REFCLK_SHM,		"Clock attached thru shared Memory (28)",
+	  "SHM" },
+	{ REFCLK_PALISADE,	"Trimble Navigation Palisade GPS (29)",
+	  "GPS_PALISADE" },
+	{ REFCLK_ONCORE,	"Motorola UT Oncore GPS (30)",
+	  "GPS_ONCORE" },
+	{ REFCLK_GPS_JUPITER,	"Rockwell Jupiter GPS (31)",
+	  "GPS_JUPITER" },
+	{ REFCLK_CHRONOLOG,	"Chrono-log K (32)",
+	  "CHRONOLOG" },
+	{ REFCLK_DUMBCLOCK,	"Dumb generic hh:mm:ss local clock (33)",
+	  "DUMBCLOCK" },
+	{ REFCLK_ULINK,		"Ultralink M320 WWVB receiver (34)",
+	  "ULINK_M320"},
+	{ REFCLK_PCF,		"Conrad parallel port radio clock (35)",
+	  "PCF"},
+	{ REFCLK_WWV_AUDIO,	"WWV/H Audio Demodulator/Decoder (36)",
+	  "WWV_AUDIO"},
+	{ REFCLK_FG,		"Forum Graphic GPS Dating Station (37)",
+	  "GPS_FG"},
+	{ REFCLK_HOPF_SERIAL,	"hopf Elektronic serial line receiver (38)",
+	  "HOPF_S"},
+	{ REFCLK_HOPF_PCI,	"hopf Elektronic PCI receiver (39)",
+	  "HOPF_P"},
+	{ REFCLK_JJY,		"JJY receiver (40)",
+	  "JJY"},
+	{ REFCLK_TT560,		"TrueTime 560 IRIG-B decoder (41)",
+	  "TT_IRIG"},
+	{ REFCLK_ZYFER,		"Zyfer GPStarplus receiver (42)",
+	  "GPS_ZYFER" },
+	{ REFCLK_RIPENCC,	"RIPE NCC Trimble driver (43)",
+	  "GPS_RIPENCC" },
+	{ REFCLK_NEOCLOCK4X,	"NeoClock4X DCF77 / TDF receiver (44)",
+	  "NEOCLK4X"},
+        { REFCLK_TSYNCPCI,    "Spectracom TSYNC PCI timing board (45)",
+          "PCI_TSYNC"},
+	{ REFCLK_GPSDJSON,	"GPSD JSON socket (46)",
+	  "GPSD_JSON"},
+	{ -1,			"", "" }
+};
+
+const char *
+clockname(
+	int num
+	)
+{
+	register struct clktype *clk;
+  
+	for (clk = clktypes; clk->code != -1; clk++) {
+		if (num == clk->code)
+			return (clk->abbrev);
+	}
+	return (NULL);
+}
diff --git a/libntp/decodenetnum.c b/libntp/decodenetnum.c
new file mode 100644
index 0000000..187d5ca
--- /dev/null
+++ b/libntp/decodenetnum.c
@@ -0,0 +1,83 @@
+/*
+ * decodenetnum - return a net number (this is crude, but careful)
+ */
+#include <config.h>
+#include <sys/types.h>
+#include <ctype.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include "ntp.h"
+#include "ntp_stdlib.h"
+#include "ntp_assert.h"
+
+/*
+ * decodenetnum		convert text IP address and port to sockaddr_u
+ *
+ * Returns 0 for failure, 1 for success.
+ */
+int
+decodenetnum(
+	const char *num,
+	sockaddr_u *netnum
+	)
+{
+	struct addrinfo hints, *ai = NULL;
+	int err;
+	u_short port;
+	const char *cp;
+	const char *port_str;
+	char *pp;
+	char *np;
+	char name[80];
+
+	NTP_REQUIRE(num != NULL);
+	NTP_REQUIRE(strlen(num) < sizeof(name));
+
+	port_str = NULL;
+	if ('[' != num[0]) {
+		/*
+		 * to distinguish IPv6 embedded colons from a port
+		 * specification on an IPv4 address, assume all 
+		 * legal IPv6 addresses have at least two colons.
+		 */
+		pp = strchr(num, ':');
+		if (NULL == pp)
+			cp = num;	/* no colons */
+		else if (NULL != strchr(pp + 1, ':'))
+			cp = num;	/* two or more colons */
+		else {			/* one colon */
+			strlcpy(name, num, sizeof(name));
+			cp = name;
+			pp = strchr(cp, ':');
+			*pp = '\0';
+			port_str = pp + 1;
+		}
+	} else {
+		cp = num + 1;
+		np = name; 
+		while (*cp && ']' != *cp)
+			*np++ = *cp++;
+		*np = 0;
+		if (']' == cp[0] && ':' == cp[1] && '\0' != cp[2])
+			port_str = &cp[2];
+		cp = name; 
+	}
+	ZERO(hints);
+	hints.ai_flags = Z_AI_NUMERICHOST;
+	err = getaddrinfo(cp, "ntp", &hints, &ai);
+	if (err != 0)
+		return 0;
+	NTP_INSIST(ai->ai_addrlen <= sizeof(*netnum));
+	ZERO(*netnum);
+	memcpy(netnum, ai->ai_addr, ai->ai_addrlen);
+	freeaddrinfo(ai);
+	if (NULL == port_str || 1 != sscanf(port_str, "%hu", &port))
+		port = NTP_PORT;
+	SET_PORT(netnum, port);
+	return 1;
+}
diff --git a/libntp/dofptoa.c b/libntp/dofptoa.c
new file mode 100644
index 0000000..758af2f
--- /dev/null
+++ b/libntp/dofptoa.c
@@ -0,0 +1,159 @@
+/*
+ * dofptoa - do the grunge work to convert an fp number to ascii
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "lib_strbuf.h"
+#include "ntp_string.h"
+#include "ntp_stdlib.h"
+
+char *
+dofptoa(
+	u_fp fpv,
+	int neg,
+	short ndec,
+	int msec
+	)
+{
+	register u_char *cp, *cpend;
+	register u_long val;
+	register short dec;
+	u_char cbuf[12];
+	u_char *cpdec;
+	char *buf;
+	char *bp;
+
+	/*
+	 * Get a string buffer before starting
+	 */
+	LIB_GETBUF(buf);
+
+	/*
+	 * Zero out the buffer
+	 */
+	ZERO(cbuf);
+
+	/*
+	 * Set the pointers to point at the first
+	 * decimal place.  Get a local copy of the value.
+	 */
+	cp = cpend = &cbuf[5];
+	val = fpv;
+
+	/*
+	 * If we have to, decode the integral part
+	 */
+	if (!(val & 0xffff0000))
+	    cp--;
+	else {
+		register u_short sv = (u_short)(val >> 16);
+		register u_short tmp;
+		register u_short ten = 10;
+
+		do {
+			tmp = sv;
+			sv = (u_short) (sv/ten);
+			*(--cp) = (u_char)(tmp - ((sv<<3) + (sv<<1)));
+		} while (sv != 0);
+	}
+
+	/*
+	 * Figure out how much of the fraction to do
+	 */
+	if (msec) {
+		dec = (short)(ndec + 3);
+		if (dec < 3)
+		    dec = 3;
+		cpdec = &cbuf[8];
+	} else {
+		dec = ndec;
+		cpdec = cpend;
+	}
+
+	if (dec > 6)
+	    dec = 6;
+	
+	if (dec > 0) {
+		do {
+			val &= 0xffff;
+			val = (val << 3) + (val << 1);
+			*cpend++ = (u_char)(val >> 16);
+		} while (--dec > 0);
+	}
+
+	if (val & 0x8000) {
+		register u_char *tp;
+		/*
+		 * Round it. Ick.
+		 */
+		tp = cpend;
+		*(--tp) += 1;
+		while (*tp >= 10) {
+			*tp = 0;
+			*(--tp) += 1;
+		}
+	}
+
+	/*
+	 * Remove leading zeroes if necessary
+	 */
+	while (cp < (cpdec -1) && *cp == 0)
+	    cp++;
+	
+	/*
+	 * Copy it into the buffer, asciizing as we go.
+	 */
+	bp = buf;
+	if (neg)
+	    *bp++ = '-';
+	
+	while (cp < cpend) {
+		if (cp == cpdec)
+		    *bp++ = '.';
+		*bp++ = (char)(*cp++ + '0');
+	}
+	*bp = '\0';
+	return buf;
+}
+
+
+char *
+fptoa(
+	s_fp	fpv,
+	short	ndec
+	)
+{
+	u_fp	plusfp;
+	int	neg;
+
+	neg = (fpv < 0);
+	if (neg) {
+		plusfp = (u_fp)(-fpv);
+	} else {
+		plusfp = (u_fp)fpv;
+	}
+
+	return dofptoa(plusfp, neg, ndec, FALSE);
+}
+
+
+char *
+fptoms(
+	s_fp	fpv,
+	short	ndec
+	)
+{
+	u_fp	plusfp;
+	int	neg;
+
+	neg = (fpv < 0);
+	if (neg) {
+		plusfp = (u_fp)(-fpv);
+	} else {
+		plusfp = (u_fp)fpv;
+	}
+
+	return dofptoa(plusfp, neg, ndec, TRUE);
+}
diff --git a/libntp/dolfptoa.c b/libntp/dolfptoa.c
new file mode 100644
index 0000000..07ead95
--- /dev/null
+++ b/libntp/dolfptoa.c
@@ -0,0 +1,174 @@
+/*
+ * dolfptoa - do the grunge work of converting an l_fp number to decimal
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "lib_strbuf.h"
+#include "ntp_string.h"
+#include "ntp_stdlib.h"
+
+char *
+dolfptoa(
+	u_int32 fpi,
+	u_int32 fpv,
+	int neg,
+	short ndec,
+	int msec
+	)
+{
+	u_char *cp, *cpend, *cpdec;
+	int dec;
+	u_char cbuf[24];
+	char *buf, *bp;
+
+	/*
+	 * Get a string buffer before starting
+	 */
+	LIB_GETBUF(buf);
+
+	/*
+	 * Zero the character buffer
+	 */
+	ZERO(cbuf);
+
+	/*
+	 * Work on the integral part. This should work reasonable on
+	 * all machines with 32 bit arithmetic. Please note that 32 bits
+	 * can *always* be represented with at most 10 decimal digits,
+	 * including a possible rounding from the fractional part.
+	 */
+	cp = cpend = cpdec = &cbuf[10];
+	for (dec = cp - cbuf; dec > 0 && fpi != 0; dec--) {
+		/* can add another digit */
+		u_int32 digit;
+		
+		digit  = fpi;
+		fpi   /= 10U;
+		digit -= (fpi << 3) + (fpi << 1); /* i*10 */
+		*--cp  = (u_char)digit;
+	}
+
+	/*
+	 * Done that, now deal with the problem of the fraction.  First
+	 * determine the number of decimal places.
+	 */
+	dec = ndec;
+	if (dec < 0)
+		dec = 0;
+	if (msec) {
+		dec   += 3;
+		cpdec += 3;
+	}
+	if ((size_t)dec > sizeof(cbuf) - (cpend - cbuf))
+		dec = sizeof(cbuf) - (cpend - cbuf);
+	
+	/*
+	 * If there's a fraction to deal with, do so.
+	 */
+	for (/*NOP*/;  dec > 0 && fpv != 0;  dec--)  {
+		u_int32 digit, tmph, tmpl;
+		
+		/*
+		 * The scheme here is to multiply the fraction
+		 * (0.1234...) by ten.  This moves a junk of BCD into
+		 * the units part.  record that and iterate.
+		 * multiply by shift/add in two dwords.
+		 */
+		digit = 0;
+		M_LSHIFT(digit, fpv);
+		tmph = digit;
+		tmpl = fpv;
+		M_LSHIFT(digit, fpv);
+		M_LSHIFT(digit, fpv);
+		M_ADD(digit, fpv, tmph, tmpl);
+		*cpend++ = (u_char)digit;
+	}
+
+	/* decide whether to round or simply extend by zeros */
+	if (dec > 0) {
+		/* only '0' digits left -- just reposition end */
+		cpend += dec; 
+	} else {
+		/* some bits remain in 'fpv'; do round */
+		u_char *tp    = cpend;
+		int     carry = ((fpv & 0x80000000) != 0);
+
+		for (dec = tp - cbuf;  carry && dec > 0;  dec--) {
+			*--tp += 1;
+			if (*tp == 10)
+				*tp = 0;
+			else 
+				carry = FALSE;
+		}
+
+		if (tp < cp) /* rounding from 999 to 1000 or similiar? */
+			cp = tp;
+	}
+
+	/*
+	 * We've now got the fraction in cbuf[], with cp pointing at
+	 * the first character, cpend pointing past the last, and
+	 * cpdec pointing at the first character past the decimal.
+	 * Remove leading zeros, then format the number into the
+	 * buffer.
+	 */
+	while (cp < cpdec && *cp == 0)
+		cp++;
+	if (cp >= cpdec)
+		cp = cpdec - 1;
+
+	bp = buf;
+	if (neg)
+		*bp++ = '-';
+	while (cp < cpend) {
+		if (cp == cpdec)
+			*bp++ = '.';
+		*bp++ = (char)(*cp++) + '0';
+	}
+	*bp = '\0';
+
+	/*
+	 * Done!
+	 */
+	return buf;
+}
+
+
+char *
+mfptoa(
+	u_int32	fpi,
+	u_int32	fpf,
+	short	ndec
+	)
+{
+	int	isneg;
+
+	isneg = M_ISNEG(fpi);
+	if (isneg) {
+		M_NEG(fpi, fpf);
+	}
+
+	return dolfptoa(fpi, fpf, isneg, ndec, FALSE);
+}
+
+
+char *
+mfptoms(
+	u_int32	fpi,
+	u_int32	fpf,
+	short	ndec
+	)
+{
+	int	isneg;
+
+	isneg = M_ISNEG(fpi);
+	if (isneg) {
+		M_NEG(fpi, fpf);
+	}
+
+	return dolfptoa(fpi, fpf, isneg, ndec, TRUE);
+}
+
+
diff --git a/libntp/emalloc.c b/libntp/emalloc.c
new file mode 100644
index 0000000..c49c5c1
--- /dev/null
+++ b/libntp/emalloc.c
@@ -0,0 +1,96 @@
+/*
+ * emalloc - return new memory obtained from the system.  Belch if none.
+ */
+#include <config.h>
+#include "ntp_types.h"
+#include "ntp_malloc.h"
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+
+
+/*
+ * When using the debug MS CRT allocator, each allocation stores the
+ * callsite __FILE__ and __LINE__, which is then displayed at process
+ * termination, to track down leaks.  We don't want all of our
+ * allocations to show up as coming from emalloc.c, so we preserve the
+ * original callsite's source file and line using macros which pass
+ * __FILE__ and __LINE__ as parameters to these routines.
+ * Other debug malloc implementations can be used by defining
+ * EREALLOC_IMPL() as ports/winnt/include/config.h does.
+ */
+
+void *
+ereallocz(
+	void *	ptr,
+	size_t	newsz,
+	size_t	priorsz,
+	int	zero_init
+#ifdef EREALLOC_CALLSITE		/* ntp_malloc.h */
+			 ,
+	const char *	file,
+	int		line
+#endif
+	)
+{
+	char *	mem;
+	size_t	allocsz;
+
+	if (0 == newsz)
+		allocsz = 1;
+	else
+		allocsz = newsz;
+
+	mem = EREALLOC_IMPL(ptr, allocsz, file, line);
+	if (NULL == mem) {
+		msyslog_term = TRUE;
+#ifndef EREALLOC_CALLSITE
+		msyslog(LOG_ERR, "fatal out of memory (%lu bytes)",
+			(u_long)newsz);
+#else
+		msyslog(LOG_ERR,
+			"fatal out of memory %s line %d (%lu bytes)",
+			file, line, (u_long)newsz);
+#endif
+		exit(1);
+	}
+
+	if (zero_init && newsz > priorsz)
+		zero_mem(mem + priorsz, newsz - priorsz);
+
+	return mem;
+}
+
+
+char *
+estrdup_impl(
+	const char *	str
+#ifdef EREALLOC_CALLSITE
+			   ,
+	const char *	file,
+	int		line
+#endif
+	)
+{
+	char *	copy;
+	size_t	bytes;
+
+	bytes = strlen(str) + 1;
+	copy = ereallocz(NULL, bytes, 0, FALSE
+#ifdef EREALLOC_CALLSITE
+			 , file, line
+#endif
+			 );
+	memcpy(copy, str, bytes);
+
+	return copy;
+}
+
+
+#ifndef EREALLOC_CALLSITE
+void *
+emalloc(size_t newsz)
+{
+	return ereallocz(NULL, newsz, 0, FALSE);
+}
+#endif
+
diff --git a/libntp/findconfig.c b/libntp/findconfig.c
new file mode 100644
index 0000000..1785ff7
--- /dev/null
+++ b/libntp/findconfig.c
@@ -0,0 +1,74 @@
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef NEED_HPUX_FINDCONFIG
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
+#include <unistd.h>
+
+const char *
+FindConfig(
+	const char *base
+	)
+{
+	static char result[BUFSIZ];
+	char hostname[BUFSIZ], *cp;
+	struct stat sbuf; 
+	struct utsname unamebuf; 
+
+	/* All keyed by initial target being a directory */
+	strlcpy(result, base, sizeof(result));
+	if (stat(result, &sbuf) == 0) {
+		if (S_ISDIR(sbuf.st_mode)) {
+
+			/* First choice is my hostname */
+			if (gethostname(hostname, BUFSIZ) >= 0) {
+				snprintf(result, sizeof(result), "%s/%s", base, hostname);
+				if (stat(result, &sbuf) == 0) {
+					goto outahere;
+				} else {
+
+					/* Second choice is of form default.835 */
+					(void) uname(&unamebuf);
+					if (strncmp(unamebuf.machine, "9000/", 5) == 0)
+					    cp = unamebuf.machine + 5;
+					else
+					    cp = unamebuf.machine;
+					snprintf(result, sizeof(result), "%s/default.%s", base, cp);
+					if (stat(result, &sbuf) == 0) {
+						goto outahere;
+					} else {
+
+						/* Last choice is just default */
+						snprintf(result, sizeof(result), "%s/default", base);
+						if (stat(result, &sbuf) == 0) {
+							goto outahere;
+						} else {
+							strlcpy(result,
+								"/not/found",
+								sizeof(result));
+						}
+					}
+				}
+			} 
+		} 
+	}
+    outahere:
+	return(result);
+}
+#else
+#include "ntp_stdlib.h"
+
+const char *
+FindConfig(
+	const char *base
+	)
+{
+	return base;
+}
+#endif
diff --git a/libntp/getopt.c b/libntp/getopt.c
new file mode 100644
index 0000000..63c82fa
--- /dev/null
+++ b/libntp/getopt.c
@@ -0,0 +1,108 @@
+/*
+ * getopt - get option letter from argv
+ *
+ * This is a version of the public domain getopt() implementation by
+ * Henry Spencer, changed for 4.3BSD compatibility (in addition to System V).
+ * It allows rescanning of an option list by setting optind to 0 before
+ * calling, which is why we use it even if the system has its own (in fact,
+ * this one has a unique name so as not to conflict with the system's).
+ * Thanks to Dennis Ferguson for the appropriate modifications.
+ *
+ * This file is in the Public Domain.
+ */
+
+/*LINTLIBRARY*/
+
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_stdlib.h"
+
+#ifdef	lint
+#undef	putc
+#define	putc	fputc
+#endif	/* lint */
+
+char	*ntp_optarg;	/* Global argument pointer. */
+int	ntp_optind = 0;	/* Global argv index. */
+int	ntp_opterr = 1;	/* for compatibility, should error be printed? */
+int	ntp_optopt;	/* for compatibility, option character checked */
+
+static char	*scan = NULL;	/* Private scan pointer. */
+static const char	*prog = "amnesia";
+
+/*
+ * Print message about a bad option.
+ */
+static int
+badopt(
+	const char *mess,
+	int ch
+	)
+{
+	if (ntp_opterr) {
+		fputs(prog, stderr);
+		fputs(mess, stderr);
+		(void) putc(ch, stderr);
+		(void) putc('\n', stderr);
+	}
+	return ('?');
+}
+
+int
+ntp_getopt(
+	int argc,
+	char *argv[],
+	const char *optstring
+	)
+{
+	register char c;
+	register const char *place;
+
+	prog = argv[0];
+	ntp_optarg = NULL;
+
+	if (ntp_optind == 0) {
+		scan = NULL;
+		ntp_optind++;
+	}
+	
+	if (scan == NULL || *scan == '\0') {
+		if (ntp_optind >= argc
+		    || argv[ntp_optind][0] != '-'
+		    || argv[ntp_optind][1] == '\0') {
+			return (EOF);
+		}
+		if (argv[ntp_optind][1] == '-'
+		    && argv[ntp_optind][2] == '\0') {
+			ntp_optind++;
+			return (EOF);
+		}
+	
+		scan = argv[ntp_optind++]+1;
+	}
+
+	c = *scan++;
+	ntp_optopt = c & 0377;
+	for (place = optstring; place != NULL && *place != '\0'; ++place)
+	    if (*place == c)
+		break;
+
+	if (place == NULL || *place == '\0' || c == ':' || c == '?') {
+		return (badopt(": unknown option -", c));
+	}
+
+	place++;
+	if (*place == ':') {
+		if (*scan != '\0') {
+			ntp_optarg = scan;
+			scan = NULL;
+		} else if (ntp_optind >= argc) {
+			return (badopt(": option requires argument -", c));
+		} else {
+			ntp_optarg = argv[ntp_optind++];
+		}
+	}
+
+	return (c & 0377);
+}
diff --git a/libntp/hextoint.c b/libntp/hextoint.c
new file mode 100644
index 0000000..d24b5a0
--- /dev/null
+++ b/libntp/hextoint.c
@@ -0,0 +1,42 @@
+/*
+ * hextoint - convert an ascii string in hex to an unsigned
+ *	      long, with error checking
+ */
+#include <config.h>
+#include <ctype.h>
+
+#include "ntp_stdlib.h"
+
+int
+hextoint(
+	const char *str,
+	u_long *pu
+	)
+{
+	register u_long u;
+	register const char *cp;
+
+	cp = str;
+
+	if (*cp == '\0')
+		return 0;
+
+	u = 0;
+	while (*cp != '\0') {
+		if (!isxdigit(*cp))
+			return 0;
+		if (u & 0xF0000000)
+			return 0;	/* overflow */
+		u <<= 4;
+		if ('0' <= *cp && *cp <= '9')
+			u += *cp++ - '0';
+		else if ('a' <= *cp && *cp <= 'f')
+			u += *cp++ - 'a' + 10;
+		else if ('A' <= *cp && *cp <= 'F')
+			u += *cp++ - 'A' + 10;
+		else
+			return 0;
+	}
+	*pu = u;
+	return 1;
+}
diff --git a/libntp/hextolfp.c b/libntp/hextolfp.c
new file mode 100644
index 0000000..8fbce2e
--- /dev/null
+++ b/libntp/hextolfp.c
@@ -0,0 +1,68 @@
+/*
+ * hextolfp - convert an ascii hex string to an l_fp number
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_fp.h"
+#include "ntp_string.h"
+#include "ntp_stdlib.h"
+
+int
+hextolfp(
+	const char *str,
+	l_fp *lfp
+	)
+{
+	register const char *cp;
+	register const char *cpstart;
+	register u_long dec_i;
+	register u_long dec_f;
+	char *ind = NULL;
+	static const char *digits = "0123456789abcdefABCDEF";
+
+	dec_i = dec_f = 0;
+	cp = str;
+
+	/*
+	 * We understand numbers of the form:
+	 *
+	 * [spaces]8_hex_digits[.]8_hex_digits[spaces|\n|\0]
+	 */
+	while (isspace((int)*cp))
+	    cp++;
+	
+	cpstart = cp;
+	while (*cp != '\0' && (cp - cpstart) < 8 &&
+	       (ind = strchr(digits, *cp)) != NULL) {
+		dec_i = dec_i << 4;	/* multiply by 16 */
+		dec_i += ((ind - digits) > 15) ? (ind - digits) - 6
+			: (ind - digits);
+		cp++;
+	}
+
+	if ((cp - cpstart) < 8 || ind == NULL)
+	    return 0;
+	if (*cp == '.')
+	    cp++;
+
+	cpstart = cp;
+	while (*cp != '\0' && (cp - cpstart) < 8 &&
+	       (ind = strchr(digits, *cp)) != NULL) {
+		dec_f = dec_f << 4;	/* multiply by 16 */
+		dec_f += ((ind - digits) > 15) ? (ind - digits) - 6
+			: (ind - digits);
+		cp++;
+	}
+
+	if ((cp - cpstart) < 8 || ind == NULL)
+	    return 0;
+	
+	if (*cp != '\0' && !isspace((int)*cp))
+	    return 0;
+
+	lfp->l_ui = dec_i;
+	lfp->l_uf = dec_f;
+	return 1;
+}
diff --git a/libntp/humandate.c b/libntp/humandate.c
new file mode 100644
index 0000000..f88d8d2
--- /dev/null
+++ b/libntp/humandate.c
@@ -0,0 +1,60 @@
+/*
+ * humandate.c - convert an NTP (or the current) time to something readable
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "ntp_unixtime.h"	/* includes <sys/time.h> and <time.h> */
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+
+
+/* This is used in msyslog.c; we don't want to clutter up the log with
+   the year and day of the week, etc.; just the minimal date and time.  */
+
+char *
+humanlogtime(void)
+{
+	char *		bp;
+	time_t		cursec;
+	struct tm *	tm;
+	
+	cursec = time(NULL);
+	tm = localtime(&cursec);
+	if (!tm)
+		return "-- --- --:--:--";
+
+	LIB_GETBUF(bp);
+	
+	snprintf(bp, LIB_BUFLENGTH, "%2d %s %02d:%02d:%02d",
+		 tm->tm_mday, months[tm->tm_mon],
+		 tm->tm_hour, tm->tm_min, tm->tm_sec);
+		
+	return bp;
+}
+
+
+/*
+ * humantime() -- like humanlogtime() but without date, and with the
+ *		  time to display given as an argument.
+ */
+char *
+humantime(
+	time_t cursec
+	)
+{
+	char *		bp;
+	struct tm *	tm;
+	
+	tm = localtime(&cursec);
+	if (!tm)
+		return "--:--:--";
+
+	LIB_GETBUF(bp);
+	
+	snprintf(bp, LIB_BUFLENGTH, "%02d:%02d:%02d",
+		 tm->tm_hour, tm->tm_min, tm->tm_sec);
+		
+	return bp;
+}
diff --git a/libntp/icom.c b/libntp/icom.c
new file mode 100644
index 0000000..c981d85
--- /dev/null
+++ b/libntp/icom.c
@@ -0,0 +1,164 @@
+/*
+ * Program to control ICOM radios
+ *
+ * This is a ripoff of the utility routines in the ICOM software
+ * distribution. The only function provided is to load the radio
+ * frequency. All other parameters must be manually set before use.
+ */
+#include <config.h>
+#include "icom.h"
+#include <unistd.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include "ntp_tty.h"
+#include "l_stdlib.h"
+
+#ifdef SYS_WINNT
+#undef write	/* ports/winnt/include/config.h: #define write _write */
+extern int async_write(int, const void *, unsigned int);
+#define write(fd, data, octets)	async_write(fd, data, octets)
+#endif
+
+/*
+ * Packet routines
+ *
+ * These routines send a packet and receive the response. If an error
+ * (collision) occurs on transmit, the packet is resent. If an error
+ * occurs on receive (timeout), all input to the terminating FI is
+ * discarded and the packet is resent. If the maximum number of retries
+ * is not exceeded, the program returns the number of octets in the user
+ * buffer; otherwise, it returns zero.
+ *
+ * ICOM frame format
+ *
+ * Frames begin with a two-octet preamble PR-PR followyd by the
+ * transceiver address RE, controller address TX, control code CN, zero
+ * or more data octets DA (depending on command), and terminator FI.
+ * Since the bus is bidirectional, every octet output is echoed on
+ * input. Every valid frame sent is answered with a frame in the same
+ * format, but with the RE and TX fields interchanged. The CN field is
+ * set to NAK if an error has occurred. Otherwise, the data are returned
+ * in this and following DA octets. If no data are returned, the CN
+ * octet is set to ACK.
+ *
+ *	+------+------+------+------+------+--//--+------+
+ *	|  PR  |  PR  |  RE  |  TX  |  CN  |  DA  |  FI  |
+ *	+------+------+------+------+------+--//--+------+
+ */
+/*
+ * Scraps
+ */
+#define DICOM /dev/icom/	/* ICOM port link */
+
+/*
+ * Local function prototypes
+ */
+static void doublefreq		(double, u_char *, int);
+
+
+/*
+ * icom_freq(fd, ident, freq) - load radio frequency
+ */
+int
+icom_freq(			/* returns 0 (ok), EIO (error) */
+	int fd,			/* file descriptor */
+	int ident,		/* ICOM radio identifier */
+	double freq		/* frequency (MHz) */
+	)
+{
+	u_char cmd[] = {PAD, PR, PR, 0, TX, V_SFREQ, 0, 0, 0, 0, FI,
+	    FI};
+	int temp;
+
+	cmd[3] = (char)ident;
+	if (ident == IC735)
+		temp = 4;
+	else
+		temp = 5;
+	doublefreq(freq * 1e6, &cmd[6], temp);
+	temp = write(fd, cmd, temp + 7);
+
+	return (0);
+}
+
+
+/*
+ * doublefreq(freq, y, len) - double to ICOM frequency with padding
+ */
+static void
+doublefreq(			/* returns void */
+	double freq,		/* frequency */
+	u_char *x,		/* radio frequency */
+	int len			/* length (octets) */
+	)
+{
+	int i;
+	char s1[16];
+	char *y;
+
+	snprintf(s1, sizeof(s1), " %10.0f", freq);
+	y = s1 + 10;
+	i = 0;
+	while (*y != ' ') {
+		x[i] = *y-- & 0x0f;
+		x[i] = x[i] | ((*y-- & 0x0f) << 4);
+		i++;
+	}
+	for ( ; i < len; i++)
+		x[i] = 0;
+	x[i] = FI;
+}
+
+/*
+ * icom_init() - open and initialize serial interface
+ *
+ * This routine opens the serial interface for raw transmission; that
+ * is, character-at-a-time, no stripping, checking or monkeying with the
+ * bits. For Unix, an input operation ends either with the receipt of a
+ * character or a 0.5-s timeout.
+ */
+int
+icom_init(
+	char *device,		/* device name/link */
+	int speed,		/* line speed */
+	int trace		/* trace flags */	)
+{
+	TTY ttyb;
+	int fd;
+	int flags;
+	int rc;
+	int saved_errno;
+
+	flags = trace;
+	fd = tty_open(device, O_RDWR, 0777);
+	if (fd < 0)
+		return -1;
+
+	rc = tcgetattr(fd, &ttyb);
+	if (rc < 0) {
+		saved_errno = errno;
+		close(fd);
+		errno = saved_errno;
+		return -1;
+	}
+	ttyb.c_iflag = 0;	/* input modes */
+	ttyb.c_oflag = 0;	/* output modes */
+	ttyb.c_cflag = IBAUD|CS8|CLOCAL; /* control modes  (no read) */
+	ttyb.c_lflag = 0;	/* local modes */
+	ttyb.c_cc[VMIN] = 0;	/* min chars */
+	ttyb.c_cc[VTIME] = 5;	/* receive timeout */
+	cfsetispeed(&ttyb, (u_int)speed);
+	cfsetospeed(&ttyb, (u_int)speed);
+	rc = tcsetattr(fd, TCSANOW, &ttyb);
+	if (rc < 0) {
+		saved_errno = errno;
+		close(fd);
+		errno = saved_errno;
+		return -1;
+	}
+	return (fd);
+}
+
+/* end program */
diff --git a/libntp/iosignal.c b/libntp/iosignal.c
new file mode 100644
index 0000000..8749a23
--- /dev/null
+++ b/libntp/iosignal.c
@@ -0,0 +1,546 @@
+/*
+ * iosignal.c - input/output routines for ntpd.	The socket-opening code
+ *		   was shamelessly stolen from ntpd.
+ */
+
+/*
+ * [Bug 158]
+ * Do the #includes differently, as under some versions of Linux
+ * sys/param.h has a #undef CONFIG_PHONE line in it.
+ *
+ * As we have ~40 CONFIG_ variables, I don't feel like renaming them
+ * every time somebody adds a new macro to some system header.
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <signal.h>
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif /* HAVE_SYS_PARAM_H */
+#ifdef HAVE_SYS_IOCTL_H
+# include <sys/ioctl.h>
+#endif
+
+#include <arpa/inet.h>
+
+#if _BSDI_VERSION >= 199510
+# include <ifaddrs.h>
+#endif
+
+# ifdef __QNXNTO__
+#  include <fcntl.h>
+#  include <unix.h>
+#  define FNDELAY O_NDELAY
+# endif
+
+#include "ntp_machine.h"
+#include "ntpd.h"
+#include "ntp_io.h"
+#include "ntp_if.h"
+#include "ntp_stdlib.h"
+#include "iosignal.h"
+
+#if defined(HAVE_SIGNALED_IO)
+static RETSIGTYPE sigio_handler	(int);
+
+/* consistency safegurad to catch BLOCK/UNBLOCK oversights */
+static int sigio_block_count = 0;
+
+/* main inputhandler to be called on SIGIO */
+static input_handler_t *input_handler_callback = NULL;
+
+# if defined(HAVE_SIGACTION)
+/*
+ * If sigaction() is used for signal handling and a signal is
+ * pending then the kernel blocks the signal before it calls
+ * the signal handler.
+ *
+ * The variable below is used to take care that the SIGIO signal
+ * is not unintentionally unblocked inside the sigio_handler()
+ * if the handler executes a piece of code that is normally
+ * bracketed by BLOCKIO()/UNBLOCKIO() calls.
+ */
+static int sigio_handler_active = 0;
+# endif
+
+/*
+ * SIGPOLL and SIGIO ROUTINES.
+ */
+
+
+
+/*
+ * TTY initialization routines.
+ */
+int
+init_clock_sig(
+	struct refclockio *rio
+	)
+{
+# ifdef USE_TTY_SIGPOLL
+	{
+		/* DO NOT ATTEMPT TO MAKE CLOCK-FD A CTTY: not portable, unreliable */
+		if (ioctl(rio->fd, I_SETSIG, S_INPUT) < 0)
+		{
+			msyslog(LOG_ERR,
+				"init_clock_sig: ioctl(I_SETSIG, S_INPUT) failed: %m");
+			return 1;
+		}
+		return 0;
+	}
+# else
+	/*
+	 * Special cases first!
+	 */
+	/* Was: defined(SYS_HPUX) */
+#  if defined(FIOSSAIOOWN) && defined(FIOSNBIO) && defined(FIOSSAIOSTAT)
+#define CLOCK_DONE
+	{
+		int pgrp, on = 1;
+
+		/* DO NOT ATTEMPT TO MAKE CLOCK-FD A CTTY: not portable, unreliable */
+		pgrp = getpid();
+		if (ioctl(rio->fd, FIOSSAIOOWN, (char *)&pgrp) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOSSAIOOWN) fails for clock I/O: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+
+		/*
+		 * set non-blocking, async I/O on the descriptor
+		 */
+		if (ioctl(rio->fd, FIOSNBIO, (char *)&on) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOSNBIO) fails for clock I/O: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+
+		if (ioctl(rio->fd, FIOSSAIOSTAT, (char *)&on) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOSSAIOSTAT) fails for clock I/O: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+		return 0;
+	}
+#  endif /* SYS_HPUX: FIOSSAIOOWN && FIOSNBIO && FIOSSAIOSTAT */
+	/* Was: defined(SYS_AIX) && !defined(_BSD) */
+#  if !defined(_BSD) && defined(_AIX) && defined(FIOASYNC) && defined(FIOSETOWN)
+	/*
+	 * SYSV compatibility mode under AIX.
+	 */
+#define CLOCK_DONE
+	{
+		int pgrp, on = 1;
+
+		/* DO NOT ATTEMPT TO MAKE CLOCK-FD A CTTY: not portable, unreliable */
+		if (ioctl(rio->fd, FIOASYNC, (char *)&on) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOASYNC) fails for clock I/O: %m");
+			return 1;
+		}
+		pgrp = -getpid();
+		if (ioctl(rio->fd, FIOSETOWN, (char*)&pgrp) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOSETOWN) fails for clock I/O: %m");
+			return 1;
+		}
+
+		if (fcntl(rio->fd, F_SETFL, FNDELAY|FASYNC) < 0)
+		{
+			msyslog(LOG_ERR, "fcntl(FNDELAY|FASYNC) fails for clock I/O: %m");
+			return 1;
+		}
+		return 0;
+	}
+#  endif /* AIX && !BSD: !_BSD && FIOASYNC && FIOSETOWN */
+#  ifndef  CLOCK_DONE
+	{
+		/* DO NOT ATTEMPT TO MAKE CLOCK-FD A CTTY: not portable, unreliable */
+#	if defined(TIOCSCTTY) && defined(USE_FSETOWNCTTY)
+		/*
+		 * there are, however, always exceptions to the rules
+		 * one is, that OSF accepts SETOWN on TTY fd's only, iff they are
+		 * CTTYs. SunOS and HPUX do not semm to have this restriction.
+		 * another question is: how can you do multiple SIGIO from several
+		 * ttys (as they all should be CTTYs), wondering...
+		 *
+		 * kd 95-07-16
+		 */
+		if (ioctl(rio->fd, TIOCSCTTY, 0) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(TIOCSCTTY, 0) fails for clock I/O: %m");
+			return 1;
+		}
+#	endif /* TIOCSCTTY && USE_FSETOWNCTTY */
+
+		if (fcntl(rio->fd, F_SETOWN, getpid()) == -1)
+		{
+			msyslog(LOG_ERR, "fcntl(F_SETOWN) fails for clock I/O: %m");
+			return 1;
+		}
+
+		if (fcntl(rio->fd, F_SETFL, FNDELAY|FASYNC) < 0)
+		{
+			msyslog(LOG_ERR,
+				"fcntl(FNDELAY|FASYNC) fails for clock I/O: %m");
+			return 1;
+		}
+		return 0;
+	}
+#  endif /* CLOCK_DONE */
+# endif /* !USE_TTY_SIGPOLL  */
+}
+
+
+
+void
+init_socket_sig(
+	int fd
+	)
+{
+# ifdef USE_UDP_SIGPOLL
+	{
+		if (ioctl(fd, I_SETSIG, S_INPUT) < 0)
+		{
+			msyslog(LOG_ERR,
+				"init_socket_sig: ioctl(I_SETSIG, S_INPUT) failed: %m - EXITING");
+			exit(1);
+		}
+	}
+# else /* USE_UDP_SIGPOLL */
+	{
+		int pgrp;
+# ifdef FIOASYNC
+		int on = 1;
+# endif
+
+#  if defined(FIOASYNC)
+		if (ioctl(fd, FIOASYNC, (char *)&on) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOASYNC) fails: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+#  elif defined(FASYNC)
+		{
+			int flags;
+
+			if ((flags = fcntl(fd, F_GETFL, 0)) == -1)
+			{
+				msyslog(LOG_ERR, "fcntl(F_GETFL) fails: %m - EXITING");
+				exit(1);
+				/*NOTREACHED*/
+			}
+			if (fcntl(fd, F_SETFL, flags|FASYNC) < 0)
+			{
+				msyslog(LOG_ERR, "fcntl(...|FASYNC) fails: %m - EXITING");
+				exit(1);
+				/*NOTREACHED*/
+			}
+		}
+#  else
+#	include "Bletch: Need asynchronous I/O!"
+#  endif
+
+#  ifdef UDP_BACKWARDS_SETOWN
+		pgrp = -getpid();
+#  else
+		pgrp = getpid();
+#  endif
+
+#  if defined(SIOCSPGRP)
+		if (ioctl(fd, SIOCSPGRP, (char *)&pgrp) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(SIOCSPGRP) fails: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+#  elif defined(FIOSETOWN)
+		if (ioctl(fd, FIOSETOWN, (char*)&pgrp) == -1)
+		{
+			msyslog(LOG_ERR, "ioctl(FIOSETOWN) fails: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+#  elif defined(F_SETOWN)
+		if (fcntl(fd, F_SETOWN, pgrp) == -1)
+		{
+			msyslog(LOG_ERR, "fcntl(F_SETOWN) fails: %m - EXITING");
+			exit(1);
+			/*NOTREACHED*/
+		}
+#  else
+#	include "Bletch: Need to set process(group) to receive SIG(IO|POLL)"
+#  endif
+	}
+# endif /* USE_UDP_SIGPOLL */
+}
+
+static RETSIGTYPE
+sigio_handler(
+	int sig
+	)
+{
+	int saved_errno = errno;
+	l_fp ts;
+
+	get_systime(&ts);
+
+# if defined(HAVE_SIGACTION)
+	sigio_handler_active++;
+	if (sigio_handler_active != 1)  /* This should never happen! */
+	    msyslog(LOG_ERR, "sigio_handler: sigio_handler_active != 1");
+# endif
+
+	INSIST(input_handler_callback != NULL);
+	(*input_handler_callback)(&ts);
+
+# if defined(HAVE_SIGACTION)
+	sigio_handler_active--;
+	if (sigio_handler_active != 0)  /* This should never happen! */
+	    msyslog(LOG_ERR, "sigio_handler: sigio_handler_active != 0");
+# endif
+
+	errno = saved_errno;
+}
+
+/*
+ * Signal support routines.
+ */
+# ifdef HAVE_SIGACTION
+void
+set_signal(input_handler_t *input)
+{
+	INSIST(input != NULL);
+	
+	input_handler_callback = input;
+
+	using_sigio = TRUE;
+#  ifdef USE_SIGIO
+	(void) signal_no_reset(SIGIO, sigio_handler);
+# endif
+#  ifdef USE_SIGPOLL
+	(void) signal_no_reset(SIGPOLL, sigio_handler);
+# endif
+}
+
+void
+block_io_and_alarm(void)
+{
+	sigset_t set;
+
+	if (sigemptyset(&set))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigemptyset() failed: %m");
+#  if defined(USE_SIGIO)
+	if (sigaddset(&set, SIGIO))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigaddset(SIGIO) failed: %m");
+#  endif
+#  if defined(USE_SIGPOLL)
+	if (sigaddset(&set, SIGPOLL))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigaddset(SIGPOLL) failed: %m");
+#  endif
+	if (sigaddset(&set, SIGALRM))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigaddset(SIGALRM) failed: %m");
+
+	if (sigprocmask(SIG_BLOCK, &set, NULL))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigprocmask() failed: %m");
+}
+
+void
+block_sigio(void)
+{
+	if ( sigio_handler_active == 0 )  /* not called from within signal handler */
+	{
+		sigset_t set;
+
+		++sigio_block_count;
+		if (sigio_block_count > 1)
+		    msyslog(LOG_INFO, "block_sigio: sigio_block_count > 1");
+		if (sigio_block_count < 1)
+		    msyslog(LOG_INFO, "block_sigio: sigio_block_count < 1");
+
+		if (sigemptyset(&set))
+		    msyslog(LOG_ERR, "block_sigio: sigemptyset() failed: %m");
+#	if defined(USE_SIGIO)
+		if (sigaddset(&set, SIGIO))
+		    msyslog(LOG_ERR, "block_sigio: sigaddset(SIGIO) failed: %m");
+#	endif
+#	if defined(USE_SIGPOLL)
+		if (sigaddset(&set, SIGPOLL))
+		    msyslog(LOG_ERR, "block_sigio: sigaddset(SIGPOLL) failed: %m");
+#	endif
+
+		if (sigprocmask(SIG_BLOCK, &set, NULL))
+		    msyslog(LOG_ERR, "block_sigio: sigprocmask() failed: %m");
+	}
+}
+
+void
+unblock_io_and_alarm(void)
+{
+	sigset_t unset;
+
+	if (sigemptyset(&unset))
+	    msyslog(LOG_ERR, "unblock_io_and_alarm: sigemptyset() failed: %m");
+
+#  if defined(USE_SIGIO)
+	if (sigaddset(&unset, SIGIO))
+	    msyslog(LOG_ERR, "unblock_io_and_alarm: sigaddset(SIGIO) failed: %m");
+#  endif
+#  if defined(USE_SIGPOLL)
+	if (sigaddset(&unset, SIGPOLL))
+	    msyslog(LOG_ERR, "unblock_io_and_alarm: sigaddset(SIGPOLL) failed: %m");
+#  endif
+	if (sigaddset(&unset, SIGALRM))
+	    msyslog(LOG_ERR, "unblock_io_and_alarm: sigaddset(SIGALRM) failed: %m");
+
+	if (sigprocmask(SIG_UNBLOCK, &unset, NULL))
+	    msyslog(LOG_ERR, "unblock_io_and_alarm: sigprocmask() failed: %m");
+}
+
+void
+unblock_sigio(void)
+{
+	if ( sigio_handler_active == 0 )  /* not called from within signal handler */
+	{
+		sigset_t unset;
+
+		--sigio_block_count;
+		if (sigio_block_count > 0)
+		    msyslog(LOG_INFO, "unblock_sigio: sigio_block_count > 0");
+		if (sigio_block_count < 0)
+		    msyslog(LOG_INFO, "unblock_sigio: sigio_block_count < 0");
+
+		if (sigemptyset(&unset))
+		    msyslog(LOG_ERR, "unblock_sigio: sigemptyset() failed: %m");
+
+#	if defined(USE_SIGIO)
+		if (sigaddset(&unset, SIGIO))
+		    msyslog(LOG_ERR, "unblock_sigio: sigaddset(SIGIO) failed: %m");
+#	endif
+#	if defined(USE_SIGPOLL)
+		if (sigaddset(&unset, SIGPOLL))
+		    msyslog(LOG_ERR, "unblock_sigio: sigaddset(SIGPOLL) failed: %m");
+#	endif
+
+		if (sigprocmask(SIG_UNBLOCK, &unset, NULL))
+		    msyslog(LOG_ERR, "unblock_sigio: sigprocmask() failed: %m");
+	}
+}
+
+void
+wait_for_signal(void)
+{
+	sigset_t old;
+
+	if (sigprocmask(SIG_UNBLOCK, NULL, &old))
+	    msyslog(LOG_ERR, "wait_for_signal: sigprocmask() failed: %m");
+
+#  if defined(USE_SIGIO)
+	if (sigdelset(&old, SIGIO))
+	    msyslog(LOG_ERR, "wait_for_signal: sigdelset(SIGIO) failed: %m");
+#  endif
+#  if defined(USE_SIGPOLL)
+	if (sigdelset(&old, SIGPOLL))
+	    msyslog(LOG_ERR, "wait_for_signal: sigdelset(SIGPOLL) failed: %m");
+#  endif
+	if (sigdelset(&old, SIGALRM))
+	    msyslog(LOG_ERR, "wait_for_signal: sigdelset(SIGALRM) failed: %m");
+
+	if (sigsuspend(&old) && (errno != EINTR))
+	    msyslog(LOG_ERR, "wait_for_signal: sigsuspend() failed: %m");
+}
+
+# else /* !HAVE_SIGACTION */
+/*
+ * Must be an old bsd system.
+ * We assume there is no SIGPOLL.
+ */
+
+void
+block_io_and_alarm(void)
+{
+	int mask;
+
+	mask = sigmask(SIGIO) | sigmask(SIGALRM);
+	if (sigblock(mask))
+	    msyslog(LOG_ERR, "block_io_and_alarm: sigblock() failed: %m");
+}
+
+void
+block_sigio(void)
+{
+	int mask;
+
+	++sigio_block_count;
+	if (sigio_block_count > 1)
+	    msyslog(LOG_INFO, "block_sigio: sigio_block_count > 1");
+	if (sigio_block_count < 1)
+	    msyslog(LOG_INFO, "block_sigio: sigio_block_count < 1");
+
+	mask = sigmask(SIGIO);
+	if (sigblock(mask))
+	    msyslog(LOG_ERR, "block_sigio: sigblock() failed: %m");
+}
+
+void
+set_signal(input_handler_t *input)
+{
+	INSIST(input != NULL);
+
+	input_handler_callback = input;
+
+	using_sigio = TRUE;
+	(void) signal_no_reset(SIGIO, sigio_handler);
+}
+
+void
+unblock_io_and_alarm(void)
+{
+	int mask, omask;
+
+	mask = sigmask(SIGIO) | sigmask(SIGALRM);
+	omask = sigblock(0);
+	omask &= ~mask;
+	(void) sigsetmask(omask);
+}
+
+void
+unblock_sigio(void)
+{
+	int mask, omask;
+
+	--sigio_block_count;
+	if (sigio_block_count > 0)
+	    msyslog(LOG_INFO, "unblock_sigio: sigio_block_count > 0");
+	if (sigio_block_count < 0)
+	    msyslog(LOG_INFO, "unblock_sigio: sigio_block_count < 0");
+	mask = sigmask(SIGIO);
+	omask = sigblock(0);
+	omask &= ~mask;
+	(void) sigsetmask(omask);
+}
+
+void
+wait_for_signal(void)
+{
+	int mask, omask;
+
+	mask = sigmask(SIGIO) | sigmask(SIGALRM);
+	omask = sigblock(0);
+	omask &= ~mask;
+	if (sigpause(omask) && (errno != EINTR))
+	    msyslog(LOG_ERR, "wait_for_signal: sigspause() failed: %m");
+}
+
+# endif /* HAVE_SIGACTION */
+#else
+int  NotAnEmptyCompilationUnit;
+#endif 
diff --git a/libntp/lib_strbuf.c b/libntp/lib_strbuf.c
new file mode 100644
index 0000000..76f7016
--- /dev/null
+++ b/libntp/lib_strbuf.c
@@ -0,0 +1,39 @@
+/*
+ * lib_strbuf - library string storage
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <isc/net.h>
+#include <isc/result.h>
+
+#include "ntp_fp.h"
+#include "ntp_stdlib.h"
+#include "lib_strbuf.h"
+
+
+/*
+ * Storage declarations
+ */
+int		debug;
+libbufstr	lib_stringbuf[LIB_NUMBUF];
+int		lib_nextbuf;
+int		ipv4_works;
+int		ipv6_works;
+int		lib_inited;
+
+
+/*
+ * initialization routine.  Might be needed if the code is ROMized.
+ */
+void
+init_lib(void)
+{
+	if (lib_inited)
+		return;
+	ipv4_works = (ISC_R_SUCCESS == isc_net_probeipv4());
+	ipv6_works = (ISC_R_SUCCESS == isc_net_probeipv6());
+	init_systime();
+	lib_inited = TRUE;
+}
diff --git a/libntp/machines.c b/libntp/machines.c
new file mode 100644
index 0000000..43944f9
--- /dev/null
+++ b/libntp/machines.c
@@ -0,0 +1,533 @@
+/* machines.c - provide special support for peculiar architectures
+ *
+ * Real bummers unite !
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "ntp.h"
+#include "ntp_machine.h"
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+#include "ntp_unixtime.h"
+#include "lib_strbuf.h"
+#include "ntp_debug.h"
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#ifdef SYS_WINNT
+int _getch(void);	/* Declare the one function rather than include conio.h */
+#else
+
+#ifdef SYS_VXWORKS
+#include "taskLib.h"
+#include "sysLib.h"
+#include "time.h"
+#include "ntp_syslog.h"
+
+/*	some translations to the world of vxWorkings -casey */
+/* first some netdb type things */
+#include "ioLib.h"
+#include <socket.h>
+int h_errno;
+
+struct hostent *gethostbyname(char *name)
+	{
+	struct hostent *host1;
+	h_errno = 0;					/* we are always successful!!! */
+	host1 = (struct hostent *) malloc (sizeof(struct hostent));
+	host1->h_name = name;
+	host1->h_addrtype = AF_INET;
+	host1->h_aliases = name;
+	host1->h_length = 4;
+	host1->h_addr_list[0] = (char *)hostGetByName (name);
+	host1->h_addr_list[1] = NULL;
+	return host1;
+	}
+
+struct hostent *gethostbyaddr(char *name, int size, int addr_type)
+	{
+	struct hostent *host1;
+	h_errno = 0;  /* we are always successful!!! */
+	host1 = (struct hostent *) malloc (sizeof(struct hostent));
+	host1->h_name = name;
+	host1->h_addrtype = AF_INET;
+	host1->h_aliases = name;
+	host1->h_length = 4;
+	host1->h_addr_list = NULL;
+	return host1;
+	}
+
+struct servent *getservbyname (char *name, char *type)
+	{
+	struct servent *serv1;
+	serv1 = (struct servent *) malloc (sizeof(struct servent));
+	serv1->s_name = "ntp";      /* official service name */
+	serv1->s_aliases = NULL;	/* alias list */
+	serv1->s_port = 123;		/* port # */
+	serv1->s_proto = "udp";     /* protocol to use */
+	return serv1;
+	}
+
+/* second
+ * vxworks thinks it has insomnia
+ * we have to sleep for number of seconds
+ */
+
+#define CLKRATE 	sysClkRateGet()
+
+/* I am not sure how valid the granularity is - it is from G. Eger's port */
+#define CLK_GRANULARITY  1		/* Granularity of system clock in usec	*/
+								/* Used to round down # usecs/tick		*/
+								/* On a VCOM-100, PIT gets 8 MHz clk,	*/
+								/*	& it prescales by 32, thus 4 usec	*/
+								/* on mv167, granularity is 1usec anyway*/
+								/* To defeat rounding, set to 1 		*/
+#define USECS_PER_SEC		MILLION		/* Microseconds per second	*/
+#define TICK (((USECS_PER_SEC / CLKRATE) / CLK_GRANULARITY) * CLK_GRANULARITY)
+
+/* emulate unix sleep
+ * casey
+ */
+void sleep(int seconds)
+	{
+	taskDelay(seconds*TICK);
+	}
+/* emulate unix alarm
+ * that pauses and calls SIGALRM after the seconds are up...
+ * so ... taskDelay() fudged for seconds should amount to the same thing.
+ * casey
+ */
+void alarm (int seconds)
+	{
+	sleep(seconds);
+	}
+
+#endif /* SYS_VXWORKS */
+
+#ifdef SYS_PTX			/* Does PTX still need this? */
+/*#include <sys/types.h>	*/
+#include <sys/procstats.h>
+
+int
+gettimeofday(
+	struct timeval *tvp
+	)
+{
+	/*
+	 * hi, this is Sequents sneak path to get to a clock
+	 * this is also the most logical syscall for such a function
+	 */
+	return (get_process_stats(tvp, PS_SELF, (struct procstats *) 0,
+				  (struct procstats *) 0));
+}
+#endif /* SYS_PTX */
+
+#ifdef MPE
+/* This is a substitute for bind() that if called for an AF_INET socket
+port less than 1024, GETPRIVMODE() and GETUSERMODE() calls will be done. */
+
+#undef bind
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/un.h>
+
+extern void GETPRIVMODE(void);
+extern void GETUSERMODE(void);
+
+int __ntp_mpe_bind(int s, void *addr, int addrlen);
+
+int __ntp_mpe_bind(int s, void *addr, int addrlen) {
+	int priv = 0;
+	int result;
+
+if (addrlen == sizeof(struct sockaddr_in)) { /* AF_INET */
+	if (((struct sockaddr_in *)addr)->sin_port > 0 &&
+	    ((struct sockaddr_in *)addr)->sin_port < 1024) {
+		priv = 1;
+		GETPRIVMODE();
+	}
+/*	((struct sockaddr_in *)addr)->sin_addr.s_addr = 0; */
+	result = bind(s,addr,addrlen);
+	if (priv == 1) GETUSERMODE();
+} else /* AF_UNIX */
+	result = bind(s,addr,addrlen);
+
+return result;
+}
+
+/*
+ * MPE stupidly requires sfcntl() to be used on sockets instead of fcntl(),
+ * so we define a wrapper to analyze the file descriptor and call the correct
+ * function.
+ */
+
+#undef fcntl
+#include <errno.h>
+#include <fcntl.h>
+
+int __ntp_mpe_fcntl(int fd, int cmd, int arg);
+
+int __ntp_mpe_fcntl(int fd, int cmd, int arg) {
+	int len;
+	struct sockaddr sa;
+
+	extern int sfcntl(int, int, int);
+
+	len = sizeof sa;
+	if (getsockname(fd, &sa, &len) == -1) {
+		if (errno == EAFNOSUPPORT) /* AF_UNIX socket */
+			return sfcntl(fd, cmd, arg);
+		if (errno == ENOTSOCK) /* file or pipe */
+			return fcntl(fd, cmd, arg);
+		return (-1); /* unknown getsockname() failure */
+	} else /* AF_INET socket */
+		return sfcntl(fd, cmd, arg);
+}
+
+/*
+ * Setitimer emulation support.  Note that we implement this using alarm(),
+ * and since alarm() only delivers one signal, we must re-enable the alarm
+ * by enabling our own SIGALRM setitimer_mpe_handler routine to be called
+ * before the real handler routine and re-enable the alarm at that time.
+ *
+ * Note that this solution assumes that sigaction(SIGALRM) is called before
+ * calling setitimer().  If it should ever to become necessary to support
+ * sigaction(SIGALRM) after calling setitimer(), it will be necessary to trap
+ * those sigaction() calls.
+ */
+
+#include <limits.h>
+#include <signal.h>
+
+/*
+ * Some global data that needs to be shared between setitimer() and
+ * setitimer_mpe_handler().
+ */
+
+struct {
+	unsigned long current_msec;	/* current alarm() value in effect */
+	unsigned long interval_msec;	/* next alarm() value from setitimer */
+	unsigned long value_msec;	/* first alarm() value from setitimer */
+	struct itimerval current_itimerval; /* current itimerval in effect */
+	struct sigaction oldact;	/* SIGALRM state saved by setitimer */
+} setitimer_mpe_ctx = { 0, 0, 0 };
+
+/*
+ * Undocumented, unsupported function to do alarm() in milliseconds.
+ */
+
+extern unsigned int px_alarm(unsigned long, int *);
+
+/*
+ * The SIGALRM handler routine enabled by setitimer().  Re-enable the alarm or
+ * restore the original SIGALRM setting if no more alarms are needed.  Then
+ * call the original SIGALRM handler (if any).
+ */
+
+static RETSIGTYPE setitimer_mpe_handler(int sig)
+{
+int alarm_hpe_status;
+
+/* Update the new current alarm value */
+
+setitimer_mpe_ctx.current_msec = setitimer_mpe_ctx.interval_msec;
+
+if (setitimer_mpe_ctx.interval_msec > 0) {
+  /* Additional intervals needed; re-arm the alarm timer */
+  px_alarm(setitimer_mpe_ctx.interval_msec,&alarm_hpe_status);
+} else {
+  /* No more intervals, so restore previous original SIGALRM handler */
+  sigaction(SIGALRM, &setitimer_mpe_ctx.oldact, NULL);
+}
+
+/* Call the original SIGALRM handler if it is a function and not just a flag */
+
+if (setitimer_mpe_ctx.oldact.sa_handler != SIG_DFL &&
+    setitimer_mpe_ctx.oldact.sa_handler != SIG_ERR &&
+    setitimer_mpe_ctx.oldact.sa_handler != SIG_IGN)
+  (*setitimer_mpe_ctx.oldact.sa_handler)(SIGALRM);
+
+}
+
+/*
+ * Our implementation of setitimer().
+ */
+
+int
+setitimer(int which, struct itimerval *value,
+	    struct itimerval *ovalue)
+{
+
+int alarm_hpe_status;
+unsigned long remaining_msec, value_msec, interval_msec;
+struct sigaction newact;
+
+/* 
+ * Convert the initial interval to milliseconds
+ */
+
+if (value->it_value.tv_sec > (UINT_MAX / 1000))
+  value_msec = UINT_MAX;
+else
+  value_msec = value->it_value.tv_sec * 1000;
+
+value_msec += value->it_value.tv_usec / 1000;
+
+/*
+ * Convert the reset interval to milliseconds
+ */
+
+if (value->it_interval.tv_sec > (UINT_MAX / 1000))
+  interval_msec = UINT_MAX;
+else
+  interval_msec = value->it_interval.tv_sec * 1000;
+
+interval_msec += value->it_interval.tv_usec / 1000;
+
+if (value_msec > 0 && interval_msec > 0) {
+  /*
+   * We'll be starting an interval timer that will be repeating, so we need to
+   * insert our own SIGALRM signal handler to schedule the repeats.
+   */
+
+  /* Read the current SIGALRM action */
+
+  if (sigaction(SIGALRM, NULL, &setitimer_mpe_ctx.oldact) < 0) {
+    fprintf(stderr,"MPE setitimer old handler failed, errno=%d\n",errno);
+    return -1;
+  }
+
+  /* Initialize the new action to call our SIGALRM handler instead */
+
+  newact.sa_handler = &setitimer_mpe_handler;
+  newact.sa_mask = setitimer_mpe_ctx.oldact.sa_mask;
+  newact.sa_flags = setitimer_mpe_ctx.oldact.sa_flags;
+ 
+  if (sigaction(SIGALRM, &newact, NULL) < 0) {
+    fprintf(stderr,"MPE setitimer new handler failed, errno=%d\n",errno);
+    return -1;
+  }
+}
+
+/*
+ * Return previous itimerval if desired
+ */
+
+if (ovalue != NULL) *ovalue = setitimer_mpe_ctx.current_itimerval;
+
+/*
+ * Save current parameters for later usage
+ */
+
+setitimer_mpe_ctx.current_itimerval = *value;
+setitimer_mpe_ctx.current_msec = value_msec;
+setitimer_mpe_ctx.value_msec = value_msec;
+setitimer_mpe_ctx.interval_msec = interval_msec;
+
+/*
+ * Schedule the first alarm
+ */
+
+remaining_msec = px_alarm(value_msec, &alarm_hpe_status);
+if (alarm_hpe_status == 0)
+  return (0);
+else
+  return (-1);
+}
+
+/* 
+ * MPE lacks gettimeofday(), so we define our own.
+ */
+
+int gettimeofday(struct timeval *tvp)
+
+{
+/* Documented, supported MPE functions. */
+extern void GETPRIVMODE(void);
+extern void GETUSERMODE(void);
+
+/* Undocumented, unsupported MPE functions. */
+extern long long get_time(void);
+extern void get_time_change_info(long long *, char *, char *);
+extern long long ticks_to_micro(long long);
+
+char pwf_since_boot, recover_pwf_time;
+long long mpetime, offset_ticks, offset_usec;
+
+GETPRIVMODE();
+mpetime = get_time(); /* MPE local time usecs since Jan 1 1970 */
+get_time_change_info(&offset_ticks, &pwf_since_boot, &recover_pwf_time);
+offset_usec = ticks_to_micro(offset_ticks);  /* UTC offset usecs */
+GETUSERMODE();
+
+mpetime = mpetime - offset_usec;  /* Convert from local time to UTC */
+tvp->tv_sec = mpetime / 1000000LL;
+tvp->tv_usec = mpetime % 1000000LL;
+
+return 0;
+}
+
+/* 
+ * MPE lacks settimeofday(), so we define our own.
+ */
+
+#define HAVE_SETTIMEOFDAY
+
+int settimeofday(struct timeval *tvp)
+
+{
+/* Documented, supported MPE functions. */
+extern void GETPRIVMODE(void);
+extern void GETUSERMODE(void);
+
+/* Undocumented, unsupported MPE functions. */
+extern void get_time_change_info(long long *, char *, char *);
+extern void initialize_system_time(long long, int);
+extern void set_time_correction(long long, int, int);
+extern long long ticks_to_micro(long long);
+
+char pwf_since_boot, recover_pwf_time;
+long long big_sec, big_usec, mpetime, offset_ticks, offset_usec;
+
+big_sec = tvp->tv_sec;
+big_usec = tvp->tv_usec;
+mpetime = (big_sec * 1000000LL) + big_usec;  /* Desired UTC microseconds */
+
+GETPRIVMODE();
+set_time_correction(0LL,0,0); /* Cancel previous time correction, if any */
+get_time_change_info(&offset_ticks, &pwf_since_boot, &recover_pwf_time);
+offset_usec = ticks_to_micro(offset_ticks); /* UTC offset microseconds */
+mpetime = mpetime + offset_usec; /* Convert from UTC to local time */
+initialize_system_time(mpetime,1);
+GETUSERMODE();
+
+return 0;
+}
+#endif /* MPE */
+
+#define SET_TOD_UNDETERMINED	0
+#define SET_TOD_CLOCK_SETTIME	1
+#define SET_TOD_SETTIMEOFDAY	2
+#define SET_TOD_STIME		3
+
+const char * const set_tod_used[] = {
+	"undetermined",
+	"clock_settime",
+	"settimeofday",
+	"stime"
+};
+
+pset_tod_using	set_tod_using = NULL;
+
+
+int
+ntp_set_tod(
+	struct timeval *tvp,
+	void *tzp
+	)
+{
+	static int	tod;
+	int		rc;
+	int		saved_errno;
+
+	TRACE(1, ("In ntp_set_tod\n"));
+	rc = -1;
+	saved_errno = 0;
+
+#ifdef HAVE_CLOCK_SETTIME
+	if (rc && (SET_TOD_CLOCK_SETTIME == tod || !tod)) {
+		struct timespec ts;
+
+		/* Convert timeval to timespec */
+		ts.tv_sec = tvp->tv_sec;
+		ts.tv_nsec = 1000 *  tvp->tv_usec;
+
+		errno = 0;
+		rc = clock_settime(CLOCK_REALTIME, &ts);
+		saved_errno = errno;
+		TRACE(1, ("ntp_set_tod: clock_settime: %d %m\n", rc));
+		if (!tod && !rc)
+			tod = SET_TOD_CLOCK_SETTIME;
+
+	}
+#endif /* HAVE_CLOCK_SETTIME */
+#ifdef HAVE_SETTIMEOFDAY
+	if (rc && (SET_TOD_SETTIMEOFDAY == tod || !tod)) {
+		struct timeval adjtv;
+
+		/*
+		 * Some broken systems don't reset adjtime() when the
+		 * clock is stepped.
+		 */
+		adjtv.tv_sec = adjtv.tv_usec = 0;
+		adjtime(&adjtv, NULL);
+		errno = 0;
+		rc = SETTIMEOFDAY(tvp, tzp);
+		saved_errno = errno;
+		TRACE(1, ("ntp_set_tod: settimeofday: %d %m\n", rc));
+		if (!tod && !rc)
+			tod = SET_TOD_SETTIMEOFDAY;
+	}
+#endif /* HAVE_SETTIMEOFDAY */
+#ifdef HAVE_STIME
+	if (rc && (SET_TOD_STIME == tod || !tod)) {
+		long tp = tvp->tv_sec;
+
+		errno = 0;
+		rc = stime(&tp); /* lie as bad as SysVR4 */
+		saved_errno = errno;
+		TRACE(1, ("ntp_set_tod: stime: %d %m\n", rc));
+		if (!tod && !rc)
+			tod = SET_TOD_STIME;
+	}
+#endif /* HAVE_STIME */
+
+	errno = saved_errno;	/* for %m below */
+	TRACE(1, ("ntp_set_tod: Final result: %s: %d %m\n",
+		  set_tod_used[tod], rc));
+	/*
+	 * Say how we're setting the time of day
+	 */
+	if (!rc && NULL != set_tod_using) {
+		(*set_tod_using)(set_tod_used[tod]);
+		set_tod_using = NULL;
+	}
+
+	if (rc)
+		errno = saved_errno;
+
+	return rc;
+}
+
+#endif /* not SYS_WINNT */
+
+#if defined (SYS_WINNT) || defined (SYS_VXWORKS) || defined(MPE)
+/* getpass is used in ntpq.c and ntpdc.c */
+
+char *
+getpass(const char * prompt)
+{
+	int c, i;
+	static char password[32];
+
+	fprintf(stderr, "%s", prompt);
+	fflush(stderr);
+
+	for (i=0; i<sizeof(password)-1 && ((c=_getch())!='\n' && c!='\r'); i++) {
+		password[i] = (char) c;
+	}
+	password[i] = '\0';
+
+	fputc('\n', stderr);
+	fflush(stderr);
+
+	return password;
+}
+#endif /* SYS_WINNT */
diff --git a/libntp/mktime.c b/libntp/mktime.c
new file mode 100644
index 0000000..50d2a08
--- /dev/null
+++ b/libntp/mktime.c
@@ -0,0 +1,310 @@
+/*
+ * Copyright (c) 1987, 1989 Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Arthur David Olson of the National Cancer Institute.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.  */
+
+/*static char *sccsid = "from: @(#)ctime.c	5.26 (Berkeley) 2/23/91";*/
+
+/*
+ * This implementation of mktime is lifted straight from the NetBSD (BSD 4.4)
+ * version.  I modified it slightly to divorce it from the internals of the
+ * ctime library.  Thus this version can't use details of the internal
+ * timezone state file to figure out strange unnormalized struct tm values,
+ * as might result from someone doing date math on the tm struct then passing
+ * it to mktime.
+ *
+ * It just does as well as it can at normalizing the tm input, then does a
+ * binary search of the time space using the system's localtime() function.
+ *
+ * The original binary search was defective in that it didn't consider the
+ * setting of tm_isdst when comparing tm values, causing the search to be
+ * flubbed for times near the dst/standard time changeover.  The original
+ * code seems to make up for this by grubbing through the timezone info
+ * whenever the binary search barfed.  Since I don't have that luxury in
+ * portable code, I have to take care of tm_isdst in the comparison routine.
+ * This requires knowing how many minutes offset dst is from standard time.
+ *
+ * So, if you live somewhere in the world where dst is not 60 minutes offset,
+ * and your vendor doesn't supply mktime(), you'll have to edit this variable
+ * by hand.  Sorry about that.
+ */
+
+#include <config.h>
+#include "ntp_machine.h"
+
+#if !defined(HAVE_MKTIME) || ( !defined(HAVE_TIMEGM) && defined(WANT_TIMEGM) )
+
+#if SIZEOF_TIME_T >= 8
+#error libntp supplied mktime()/timegm() do not support 64-bit time_t
+#endif
+
+#ifndef DSTMINUTES
+#define DSTMINUTES 60
+#endif
+
+#define FALSE 0
+#define TRUE 1
+
+/* some constants from tzfile.h */
+#define SECSPERMIN      60
+#define MINSPERHOUR     60
+#define HOURSPERDAY     24
+#define DAYSPERWEEK     7
+#define DAYSPERNYEAR    365
+#define DAYSPERLYEAR    366
+#define SECSPERHOUR     (SECSPERMIN * MINSPERHOUR)
+#define SECSPERDAY      ((long) SECSPERHOUR * HOURSPERDAY)
+#define MONSPERYEAR     12
+#define TM_YEAR_BASE    1900
+#define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0)
+
+static int	mon_lengths[2][MONSPERYEAR] = {
+	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static int	year_lengths[2] = {
+	DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+/*
+** Adapted from code provided by Robert Elz, who writes:
+**	The "best" way to do mktime I think is based on an idea of Bob
+**	Kridle's (so its said...) from a long time ago. (mtxinu!kridle now).
+**	It does a binary search of the time_t space.  Since time_t's are
+**	just 32 bits, its a max of 32 iterations (even at 64 bits it
+**	would still be very reasonable).
+*/
+
+#ifndef WRONG
+#define WRONG	(-1)
+#endif /* !defined WRONG */
+
+static void
+normalize(
+	int * tensptr,
+	int * unitsptr,
+	int	base
+	)
+{
+	if (*unitsptr >= base) {
+		*tensptr += *unitsptr / base;
+		*unitsptr %= base;
+	} else if (*unitsptr < 0) {
+		--*tensptr;
+		*unitsptr += base;
+		if (*unitsptr < 0) {
+			*tensptr -= 1 + (-*unitsptr) / base;
+			*unitsptr = base - (-*unitsptr) % base;
+		}
+	}
+}
+
+static struct tm *
+mkdst(
+	struct tm *	tmp
+	)
+{
+    /* jds */
+    static struct tm tmbuf;
+
+    tmbuf = *tmp;
+    tmbuf.tm_isdst = 1;
+    tmbuf.tm_min += DSTMINUTES;
+    normalize(&tmbuf.tm_hour, &tmbuf.tm_min, MINSPERHOUR);
+    return &tmbuf;
+}
+
+static int
+tmcomp(
+	register struct tm * atmp,
+	register struct tm * btmp
+	)
+{
+	register int	result;
+
+	/* compare down to the same day */
+
+	if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
+	    (result = (atmp->tm_mon - btmp->tm_mon)) == 0)
+	    result = (atmp->tm_mday - btmp->tm_mday);
+
+	if(result != 0)
+	    return result;
+
+	/* get rid of one-sided dst bias */
+
+	if(atmp->tm_isdst == 1 && !btmp->tm_isdst)
+	    btmp = mkdst(btmp);
+	else if(btmp->tm_isdst == 1 && !atmp->tm_isdst)
+	    atmp = mkdst(atmp);
+
+	/* compare the rest of the way */
+
+	if ((result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
+	    (result = (atmp->tm_min - btmp->tm_min)) == 0)
+	    result = atmp->tm_sec - btmp->tm_sec;
+	return result;
+}
+
+
+static time_t
+time2(
+	struct tm *	tmp,
+	int * 		okayp,
+	int		usezn
+	)
+{
+	register int			dir;
+	register int			bits;
+	register int			i;
+	register int			saved_seconds;
+	time_t				t;
+	struct tm			yourtm, mytm;
+
+	*okayp = FALSE;
+	yourtm = *tmp;
+	if (yourtm.tm_sec >= SECSPERMIN + 2 || yourtm.tm_sec < 0)
+		normalize(&yourtm.tm_min, &yourtm.tm_sec, SECSPERMIN);
+	normalize(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR);
+	normalize(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY);
+	normalize(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR);
+	while (yourtm.tm_mday <= 0) {
+		--yourtm.tm_year;
+		yourtm.tm_mday +=
+			year_lengths[isleap(yourtm.tm_year + TM_YEAR_BASE)];
+	}
+	for ( ; ; ) {
+		i = mon_lengths[isleap(yourtm.tm_year +
+			TM_YEAR_BASE)][yourtm.tm_mon];
+		if (yourtm.tm_mday <= i)
+			break;
+		yourtm.tm_mday -= i;
+		if (++yourtm.tm_mon >= MONSPERYEAR) {
+			yourtm.tm_mon = 0;
+			++yourtm.tm_year;
+		}
+	}
+	saved_seconds = yourtm.tm_sec;
+	yourtm.tm_sec = 0;
+	/*
+	** Calculate the number of magnitude bits in a time_t
+	** (this works regardless of whether time_t is
+	** signed or unsigned, though lint complains if unsigned).
+	*/
+	for (bits = 0, t = 1; t > 0; ++bits, t <<= 1)
+		;
+	/*
+	** If time_t is signed, then 0 is the median value,
+	** if time_t is unsigned, then 1 << bits is median.
+	*/
+	t = (t < 0) ? 0 : ((time_t) 1 << bits);
+	for ( ; ; ) {
+		if (usezn)
+			mytm = *localtime(&t);
+		else
+			mytm = *gmtime(&t);
+		dir = tmcomp(&mytm, &yourtm);
+		if (dir != 0) {
+			if (bits-- < 0)
+				return WRONG;
+			if (bits < 0)
+				--t;
+			else if (dir > 0)
+				t -= (time_t) 1 << bits;
+			else	t += (time_t) 1 << bits;
+			continue;
+		}
+		if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
+			break;
+
+		return WRONG;
+	}
+	t += saved_seconds;
+	if (usezn)
+		*tmp = *localtime(&t);
+	else
+		*tmp = *gmtime(&t);
+	*okayp = TRUE;
+	return t;
+}
+#else
+int mktime_bs;
+#endif /* !HAVE_MKTIME || !HAVE_TIMEGM */
+
+#ifndef HAVE_MKTIME
+static time_t
+time1(
+	struct tm * tmp
+	)
+{
+	register time_t			t;
+	int				okay;
+
+	if (tmp->tm_isdst > 1)
+		tmp->tm_isdst = 1;
+	t = time2(tmp, &okay, 1);
+	if (okay || tmp->tm_isdst < 0)
+		return t;
+
+	return WRONG;
+}
+
+time_t
+mktime(
+	struct tm * tmp
+	)
+{
+	return time1(tmp);
+}
+#endif /* !HAVE_MKTIME */
+
+#ifdef WANT_TIMEGM
+#ifndef HAVE_TIMEGM
+time_t
+timegm(
+	struct tm * tmp
+	)
+{
+	register time_t			t;
+	int				okay;
+
+	tmp->tm_isdst = 0;
+	t = time2(tmp, &okay, 0);
+	if (okay || tmp->tm_isdst < 0)
+		return t;
+
+	return WRONG;
+}
+#endif /* !HAVE_TIMEGM */
+#endif /* WANT_TIMEGM */
diff --git a/libntp/modetoa.c b/libntp/modetoa.c
new file mode 100644
index 0000000..b476bc9
--- /dev/null
+++ b/libntp/modetoa.c
@@ -0,0 +1,35 @@
+/*
+ * modetoa - return an asciized mode
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+
+const char *
+modetoa(
+	int mode
+	)
+{
+	char *bp;
+	static const char * const modestrings[] = {
+		"unspec",
+		"sym_active",
+		"sym_passive",
+		"client",
+		"server",
+		"broadcast",
+		"control",
+		"private",
+		"bclient",
+	};
+
+	if (mode < 0 || mode >= COUNTOF(modestrings)) {
+		LIB_GETBUF(bp);
+		snprintf(bp, LIB_BUFLENGTH, "mode#%d", mode);
+		return bp;
+	}
+
+	return modestrings[mode];
+}
diff --git a/libntp/mstolfp.c b/libntp/mstolfp.c
new file mode 100644
index 0000000..1a1a02b
--- /dev/null
+++ b/libntp/mstolfp.c
@@ -0,0 +1,101 @@
+/*
+ * mstolfp - convert an ascii string in milliseconds to an l_fp number
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_fp.h"
+#include "ntp_stdlib.h"
+
+int
+mstolfp(
+	const char *str,
+	l_fp *lfp
+	)
+{
+	register const char *cp;
+	register char *bp;
+	register const char *cpdec;
+	char buf[100];
+
+	/*
+	 * We understand numbers of the form:
+	 *
+	 * [spaces][-][digits][.][digits][spaces|\n|\0]
+	 *
+	 * This is one enormous hack.  Since I didn't feel like
+	 * rewriting the decoding routine for milliseconds, what
+	 * is essentially done here is to make a copy of the string
+	 * with the decimal moved over three places so the seconds
+	 * decoding routine can be used.
+	 */
+	bp = buf;
+	cp = str;
+	while (isspace((int)*cp))
+	    cp++;
+	
+	if (*cp == '-') {
+		*bp++ = '-';
+		cp++;
+	}
+
+	if (*cp != '.' && !isdigit((int)*cp))
+	    return 0;
+
+
+	/*
+	 * Search forward for the decimal point or the end of the string.
+	 */
+	cpdec = cp;
+	while (isdigit((int)*cpdec))
+	    cpdec++;
+
+	/*
+	 * Found something.  If we have more than three digits copy the
+	 * excess over, else insert a leading 0.
+	 */
+	if ((cpdec - cp) > 3) {
+		do {
+			*bp++ = (char)*cp++;
+		} while ((cpdec - cp) > 3);
+	} else {
+		*bp++ = '0';
+	}
+
+	/*
+	 * Stick the decimal in.  If we've got less than three digits in
+	 * front of the millisecond decimal we insert the appropriate number
+	 * of zeros.
+	 */
+	*bp++ = '.';
+	if ((cpdec - cp) < 3) {
+		register int i = 3 - (cpdec - cp);
+
+		do {
+			*bp++ = '0';
+		} while (--i > 0);
+	}
+
+	/*
+	 * Copy the remainder up to the millisecond decimal.  If cpdec
+	 * is pointing at a decimal point, copy in the trailing number too.
+	 */
+	while (cp < cpdec)
+	    *bp++ = (char)*cp++;
+	
+	if (*cp == '.') {
+		cp++;
+		while (isdigit((int)*cp))
+		    *bp++ = (char)*cp++;
+	}
+	*bp = '\0';
+
+	/*
+	 * Check to make sure the string is properly terminated.  If
+	 * so, give the buffer to the decoding routine.
+	 */
+	if (*cp != '\0' && !isspace((int)*cp))
+	    return 0;
+	return atolfp(buf, lfp);
+}
diff --git a/libntp/msyslog.c b/libntp/msyslog.c
new file mode 100644
index 0000000..283414d
--- /dev/null
+++ b/libntp/msyslog.c
@@ -0,0 +1,572 @@
+/*
+ * msyslog - either send a message to the terminal or print it on
+ *	     the standard output.
+ *
+ * Converted to use varargs, much better ... jks
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdio.h>
+
+#include "ntp_string.h"
+#include "ntp.h"
+#include "ntp_debug.h"
+#include "ntp_syslog.h"
+
+#ifdef SYS_WINNT
+# include <stdarg.h>
+# include "..\ports\winnt\libntp\messages.h"
+#endif
+
+
+int	syslogit = TRUE;
+int	msyslog_term = FALSE;	/* duplicate to stdout/err */
+int	msyslog_term_pid = TRUE;
+int	msyslog_include_timestamp = TRUE;
+FILE *	syslog_file;
+char *	syslog_fname;
+char *	syslog_abs_fname;
+
+/* libntp default ntp_syslogmask is all bits lit */
+#define INIT_NTP_SYSLOGMASK	~(u_int32)0
+u_int32 ntp_syslogmask = INIT_NTP_SYSLOGMASK;
+
+extern	char *	progname;
+
+/* Declare the local functions */
+void	addto_syslog	(int, const char *);
+#ifndef VSNPRINTF_PERCENT_M
+void	format_errmsg	(char *, size_t, const char *, int);
+
+/* format_errmsg() is under #ifndef VSNPRINTF_PERCENT_M above */
+void
+format_errmsg(
+	char *		nfmt,
+	size_t		lennfmt,
+	const char *	fmt,
+	int		errval
+	)
+{
+	char errmsg[256];
+	char c;
+	char *n;
+	const char *f;
+	size_t len;
+
+	n = nfmt;
+	f = fmt;
+	while ((c = *f++) != '\0' && n < (nfmt + lennfmt - 1)) {
+		if (c != '%') {
+			*n++ = c;
+			continue;
+		}
+		if ((c = *f++) != 'm') {
+			*n++ = '%';
+			if ('\0' == c)
+				break;
+			*n++ = c;
+			continue;
+		}
+		errno_to_str(errval, errmsg, sizeof(errmsg));
+		len = strlen(errmsg);
+
+		/* Make sure we have enough space for the error message */
+		if ((n + len) < (nfmt + lennfmt - 1)) {
+			memcpy(n, errmsg, len);
+			n += len;
+		}
+	}
+	*n = '\0';
+}
+#endif	/* VSNPRINTF_PERCENT_M */
+
+
+/*
+ * errno_to_str() - a thread-safe strerror() replacement.
+ *		    Hides the varied signatures of strerror_r().
+ *		    For Windows, we have:
+ *			#define errno_to_str isc_strerror
+ */
+#ifndef errno_to_str
+void
+errno_to_str(
+	int	err,
+	char *	buf,
+	size_t	bufsiz
+	)
+{
+# if defined(STRERROR_R_CHAR_P) || !HAVE_DECL_STRERROR_R
+	char *	pstatic;
+
+	buf[0] = '\0';
+#  ifdef STRERROR_R_CHAR_P
+	pstatic = strerror_r(err, buf, bufsiz);
+#  else
+	pstatic = strerror(err);
+#  endif
+	if (NULL == pstatic && '\0' == buf[0])
+		snprintf(buf, bufsiz, "%s(%d): errno %d",
+#  ifdef STRERROR_R_CHAR_P
+			 "strerror_r",
+#  else
+			 "strerror",
+#  endif
+			 err, errno);
+	/* protect against believing an int return is a pointer */
+	else if (pstatic != buf && pstatic > (char *)bufsiz)
+		strlcpy(buf, pstatic, bufsiz);
+# else
+	int	rc;
+
+	rc = strerror_r(err, buf, bufsiz);
+	if (rc < 0)
+		snprintf(buf, bufsiz, "strerror_r(%d): errno %d",
+			 err, errno);
+# endif
+}
+#endif	/* errno_to_str */
+
+
+/*
+ * addto_syslog()
+ * This routine adds the contents of a buffer to the syslog or an
+ * application-specific logfile.
+ */
+void
+addto_syslog(
+	int		level,
+	const char *	msg
+	)
+{
+	static char *	prevcall_progname;
+	static char *	prog;
+	const char	nl[] = "\n";
+	const char	empty[] = "";
+	FILE *		term_file;
+	int		log_to_term;
+	int		log_to_file;
+	int		pid;
+	const char *	nl_or_empty;
+	const char *	human_time;
+
+	/* setup program basename static var prog if needed */
+	if (progname != prevcall_progname) {
+		prevcall_progname = progname;
+		prog = strrchr(progname, DIR_SEP);
+		if (prog != NULL)
+			prog++;
+		else
+			prog = progname;
+	}
+
+	log_to_term = msyslog_term;
+	log_to_file = FALSE;
+#if !defined(VMS) && !defined(SYS_VXWORKS)
+	if (syslogit)
+		syslog(level, "%s", msg);
+	else
+#endif
+		if (syslog_file != NULL)
+			log_to_file = TRUE;
+		else
+			log_to_term = TRUE;
+#if DEBUG
+	if (debug > 0)
+		log_to_term = TRUE;
+#endif
+	if (!(log_to_file || log_to_term))
+		return;
+
+	/* syslog() adds the timestamp, name, and pid */
+	if (msyslog_include_timestamp)
+		human_time = humanlogtime();
+	else	/* suppress gcc pot. uninit. warning */
+		human_time = NULL;
+	if (msyslog_term_pid || log_to_file)
+		pid = getpid();
+	else	/* suppress gcc pot. uninit. warning */
+		pid = -1;
+
+	/* syslog() adds trailing \n if not present */
+	if ('\n' != msg[strlen(msg) - 1])
+		nl_or_empty = nl;
+	else
+		nl_or_empty = empty;
+
+	if (log_to_term) {
+		term_file = (level <= LOG_ERR)
+				? stderr
+				: stdout;
+		if (msyslog_include_timestamp)
+			fprintf(term_file, "%s ", human_time);
+		if (msyslog_term_pid)
+			fprintf(term_file, "%s[%d]: ", prog, pid);
+		fprintf(term_file, "%s%s", msg, nl_or_empty);
+		fflush(term_file);
+	}
+
+	if (log_to_file) {
+		if (msyslog_include_timestamp)
+			fprintf(syslog_file, "%s ", human_time);
+		fprintf(syslog_file, "%s[%d]: %s%s", prog, pid, msg,
+			nl_or_empty);
+		fflush(syslog_file);
+	}
+}
+
+
+int
+mvsnprintf(
+	char *		buf,
+	size_t		bufsiz,
+	const char *	fmt,
+	va_list		ap
+	)
+{
+#ifndef VSNPRINTF_PERCENT_M
+	char		nfmt[256];
+#else
+	const char *	nfmt = fmt;
+#endif
+	int		errval;
+
+	/*
+	 * Save the error value as soon as possible
+	 */
+#ifdef SYS_WINNT
+	errval = GetLastError();
+	if (NO_ERROR == errval)
+#endif /* SYS_WINNT */
+		errval = errno;
+
+#ifndef VSNPRINTF_PERCENT_M
+	format_errmsg(nfmt, sizeof(nfmt), fmt, errval);
+#else
+	errno = errval;
+#endif
+	return vsnprintf(buf, bufsiz, nfmt, ap);
+}
+
+
+int
+mvfprintf(
+	FILE *		fp,
+	const char *	fmt,
+	va_list		ap
+	)
+{
+#ifndef VSNPRINTF_PERCENT_M
+	char		nfmt[256];
+#else
+	const char *	nfmt = fmt;
+#endif
+	int		errval;
+
+	/*
+	 * Save the error value as soon as possible
+	 */
+#ifdef SYS_WINNT
+	errval = GetLastError();
+	if (NO_ERROR == errval)
+#endif /* SYS_WINNT */
+		errval = errno;
+
+#ifndef VSNPRINTF_PERCENT_M
+	format_errmsg(nfmt, sizeof(nfmt), fmt, errval);
+#else
+	errno = errval;
+#endif
+	return vfprintf(fp, nfmt, ap);
+}
+
+
+int
+mfprintf(
+	FILE *		fp,
+	const char *	fmt,
+	...
+	)
+{
+	va_list		ap;
+	int		rc;
+
+	va_start(ap, fmt);
+	rc = mvfprintf(fp, fmt, ap);
+	va_end(ap);
+
+	return rc;
+}
+
+
+int
+mprintf(
+	const char *	fmt,
+	...
+	)
+{
+	va_list		ap;
+	int		rc;
+
+	va_start(ap, fmt);
+	rc = mvfprintf(stdout, fmt, ap);
+	va_end(ap);
+
+	return rc;
+}
+
+
+int
+msnprintf(
+	char *		buf,
+	size_t		bufsiz,
+	const char *	fmt,
+	...
+	)
+{
+	va_list	ap;
+	size_t	rc;
+
+	va_start(ap, fmt);
+	rc = mvsnprintf(buf, bufsiz, fmt, ap);
+	va_end(ap);
+
+	return rc;
+}
+
+
+void
+msyslog(
+	int		level,
+	const char *	fmt,
+	...
+	)
+{
+	char	buf[1024];
+	va_list	ap;
+
+	va_start(ap, fmt);
+	mvsnprintf(buf, sizeof(buf), fmt, ap);
+	va_end(ap);
+	addto_syslog(level, buf);
+}
+
+
+/*
+ * Initialize the logging
+ *
+ * Called once per process, including forked children.
+ */
+void
+init_logging(
+	const char *	name,
+	u_int32		def_syslogmask,
+	int		is_daemon
+	)
+{
+	static int	was_daemon;
+	const char *	cp;
+	const char *	pname;
+
+	/*
+	 * ntpd defaults to only logging sync-category events, when
+	 * NLOG() is used to conditionalize.  Other libntp clients
+	 * leave it alone so that all NLOG() conditionals will fire.
+	 * This presumes all bits lit in ntp_syslogmask can't be
+	 * configured via logconfig and all lit is thereby a sentinel
+	 * that ntp_syslogmask is still at its default from libntp,
+	 * keeping in mind this function is called in forked children
+	 * where it has already been called in the parent earlier.
+	 * Forked children pass 0 for def_syslogmask.
+	 */
+	if (INIT_NTP_SYSLOGMASK == ntp_syslogmask &&
+	    0 != def_syslogmask)
+		ntp_syslogmask = def_syslogmask; /* set more via logconfig */
+
+	/*
+	 * Logging.  This may actually work on the gizmo board.  Find a name
+	 * to log with by using the basename
+	 */
+	cp = strrchr(name, DIR_SEP);
+	if (NULL == cp)
+		pname = name;
+	else
+		pname = 1 + cp;	/* skip DIR_SEP */
+	progname = estrdup(pname);
+#ifdef SYS_WINNT			/* strip ".exe" */
+	cp = strrchr(progname, '.');
+	if (NULL != cp && !strcasecmp(cp, ".exe"))
+		progname[cp - progname] = '\0';
+#endif
+
+#if !defined(VMS)
+
+	if (is_daemon)
+		was_daemon = TRUE;
+# ifndef LOG_DAEMON
+	openlog(progname, LOG_PID);
+# else /* LOG_DAEMON */
+
+#  ifndef LOG_NTP
+#	define	LOG_NTP LOG_DAEMON
+#  endif
+	openlog(progname, LOG_PID | LOG_NDELAY, (was_daemon) 
+						    ? LOG_NTP
+						    : 0);
+#  ifdef DEBUG
+	if (debug)
+		setlogmask(LOG_UPTO(LOG_DEBUG));
+	else
+#  endif /* DEBUG */
+		setlogmask(LOG_UPTO(LOG_DEBUG)); /* @@@ was INFO */
+# endif /* LOG_DAEMON */
+#endif	/* !VMS */
+}
+
+
+/*
+ * change_logfile()
+ *
+ * Used to change from syslog to a logfile, or from one logfile to
+ * another, and to reopen logfiles after forking.  On systems where
+ * ntpd forks, deals with converting relative logfile paths to
+ * absolute (root-based) because we reopen logfiles after the current
+ * directory has changed.
+ */
+int
+change_logfile(
+	const char *	fname,
+	int		leave_crumbs
+	)
+{
+	FILE *		new_file;
+	const char *	log_fname;
+	char *		abs_fname;
+#if !defined(SYS_WINNT) && !defined(SYS_VXWORKS) && !defined(VMS)
+	char		curdir[512];
+	size_t		cd_octets;
+	size_t		octets;
+#endif	/* POSIX */
+
+	NTP_REQUIRE(fname != NULL);
+	log_fname = fname;
+
+	/*
+	 * In a forked child of a parent which is logging to a file
+	 * instead of syslog, syslog_file will be NULL and both
+	 * syslog_fname and syslog_abs_fname will be non-NULL.
+	 * If we are given the same filename previously opened
+	 * and it's still open, there's nothing to do here.
+	 */
+	if (syslog_file != NULL && syslog_fname != NULL &&
+	    0 == strcmp(syslog_fname, log_fname))
+		return 0;
+
+	if (0 == strcmp(log_fname, "stderr")) {
+		new_file = stderr;
+		abs_fname = estrdup(log_fname);
+	} else if (0 == strcmp(log_fname, "stdout")) {
+		new_file = stdout;
+		abs_fname = estrdup(log_fname);
+	} else {
+		if (syslog_fname != NULL &&
+		    0 == strcmp(log_fname, syslog_fname))
+			log_fname = syslog_abs_fname;
+#if !defined(SYS_WINNT) && !defined(SYS_VXWORKS) && !defined(VMS)
+		if (log_fname != syslog_abs_fname &&
+		    DIR_SEP != log_fname[0] &&
+		    0 != strcmp(log_fname, "stderr") &&
+		    0 != strcmp(log_fname, "stdout") &&
+		    NULL != getcwd(curdir, sizeof(curdir))) {
+			cd_octets = strlen(curdir);
+			/* trim any trailing '/' */
+			if (cd_octets > 1 &&
+			    DIR_SEP == curdir[cd_octets - 1])
+				cd_octets--;
+			octets = cd_octets;
+			octets += 1;	/* separator '/' */
+			octets += strlen(log_fname);
+			octets += 1;	/* NUL terminator */
+			abs_fname = emalloc(octets);
+			snprintf(abs_fname, octets, "%.*s%c%s",
+				 (int)cd_octets, curdir, DIR_SEP,
+				 log_fname);
+		} else
+#endif
+			abs_fname = estrdup(log_fname);
+		TRACE(1, ("attempting to open log %s\n", abs_fname));
+		new_file = fopen(abs_fname, "a");
+	}
+
+	if (NULL == new_file) {
+		free(abs_fname);
+		return -1;
+	}
+
+	/* leave a pointer in the old log */
+	if (leave_crumbs && (syslogit || log_fname != syslog_abs_fname))
+		msyslog(LOG_NOTICE, "switching logging to file %s",
+			abs_fname);
+
+	if (syslog_file != NULL &&
+	    syslog_file != stderr && syslog_file != stdout &&
+	    fileno(syslog_file) != fileno(new_file))
+		fclose(syslog_file);
+	syslog_file = new_file;
+	if (log_fname == syslog_abs_fname) {
+		free(abs_fname);
+	} else {
+		if (syslog_abs_fname != NULL &&
+		    syslog_abs_fname != syslog_fname)
+			free(syslog_abs_fname);
+		if (syslog_fname != NULL)
+			free(syslog_fname);
+		syslog_fname = estrdup(log_fname);
+		syslog_abs_fname = abs_fname;
+	}
+	syslogit = FALSE;
+
+	return 0;
+}
+
+
+/*
+ * setup_logfile()
+ *
+ * Redirect logging to a file if requested with -l/--logfile or via
+ * ntp.conf logfile directive.
+ *
+ * This routine is invoked three different times in the sequence of a
+ * typical daemon ntpd with DNS lookups to do.  First it is invoked in
+ * the original ntpd process, then again in the daemon after closing
+ * all descriptors.  In both of those cases, ntp.conf has not been
+ * processed, so only -l/--logfile will trigger logfile redirection in
+ * those invocations.  Finally, if DNS names are resolved, the worker
+ * child invokes this routine after its fork and close of all
+ * descriptors.  In this case, ntp.conf has been processed and any
+ * "logfile" directive needs to be honored in the child as well.
+ */
+void
+setup_logfile(
+	const char *	name
+	)
+{
+	if (NULL == syslog_fname && NULL != name) {
+		if (-1 == change_logfile(name, TRUE))
+			msyslog(LOG_ERR, "Cannot open log file %s, %m",
+				name);
+		return ;
+	} 
+	if (NULL == syslog_fname)
+		return;
+
+	if (-1 == change_logfile(syslog_fname, FALSE))
+		msyslog(LOG_ERR, "Cannot reopen log file %s, %m",
+			syslog_fname);
+}
diff --git a/libntp/netof.c b/libntp/netof.c
new file mode 100644
index 0000000..c8831c3
--- /dev/null
+++ b/libntp/netof.c
@@ -0,0 +1,55 @@
+/* 
+ * netof - return the net address part of an ip address in a sockaddr_storage structure
+ *         (zero out host part)
+ */
+#include <config.h>
+#include <stdio.h>
+#include <syslog.h>
+
+#include "ntp_fp.h"
+#include "ntp_net.h"
+#include "ntp_stdlib.h"
+#include "ntp.h"
+
+sockaddr_u *
+netof(
+	sockaddr_u *hostaddr
+	)
+{
+	static sockaddr_u	netofbuf[8];
+	static int		next_netofbuf;
+	u_int32			netnum;
+	sockaddr_u *		netaddr;
+
+	netaddr = &netofbuf[next_netofbuf];
+	next_netofbuf = (next_netofbuf + 1) % COUNTOF(netofbuf);
+
+	memcpy(netaddr, hostaddr, sizeof(*netaddr));
+
+	if (IS_IPV4(netaddr)) {
+		netnum = SRCADR(netaddr);
+
+		/*
+		 * We live in a modern CIDR world where the basement nets, which
+		 * used to be class A, are now probably associated with each
+		 * host address. So, for class-A nets, all bits are significant.
+		 */
+		if (IN_CLASSC(netnum))
+			netnum &= IN_CLASSC_NET;
+		else if (IN_CLASSB(netnum))
+			netnum &= IN_CLASSB_NET;
+
+		SET_ADDR4(netaddr, netnum);
+
+	} else if (IS_IPV6(netaddr))
+		/* assume the typical /64 subnet size */
+		zero_mem(&NSRCADR6(netaddr)[8], 8);
+#ifdef DEBUG
+	else {
+		msyslog(LOG_ERR, "netof unknown AF %d", AF(netaddr));
+		exit(1);
+	}
+#endif
+
+	return netaddr;
+}
diff --git a/libntp/ntp_calendar.c b/libntp/ntp_calendar.c
new file mode 100644
index 0000000..e557f4e
--- /dev/null
+++ b/libntp/ntp_calendar.c
@@ -0,0 +1,1615 @@
+/*
+ * ntp_calendar.c - calendar and helper functions
+ *
+ * Written by Juergen Perlinger (perlinger@ntp.org) for the NTP project.
+ * The contents of 'html/copyright.html' apply.
+ */
+#include <config.h>
+#include <sys/types.h>
+
+#include "ntp_types.h"
+#include "ntp_calendar.h"
+#include "ntp_stdlib.h"
+#include "ntp_fp.h"
+#include "ntp_unixtime.h"
+
+/*
+ *---------------------------------------------------------------------
+ * replacing the 'time()' function
+ * --------------------------------------------------------------------
+ */
+
+static systime_func_ptr systime_func = &time;
+static inline time_t now(void);
+
+
+systime_func_ptr
+ntpcal_set_timefunc(
+	systime_func_ptr nfunc
+	)
+{
+	systime_func_ptr res;
+	
+	res = systime_func;
+	if (NULL == nfunc)
+		nfunc = &time;
+	systime_func = nfunc;
+
+	return res;
+}
+
+
+static inline time_t
+now(void)
+{
+	return (*systime_func)(NULL);
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert between 'time_t' and 'vint64'
+ *---------------------------------------------------------------------
+ */
+vint64
+time_to_vint64(
+	const time_t * ptt
+	)
+{
+	vint64 res;
+	time_t tt;
+
+	tt = *ptt;
+
+#if SIZEOF_TIME_T <= 4
+
+	res.D_s.hi = 0;
+	if (tt < 0) {
+		res.D_s.lo = (uint32_t)-tt;
+		M_NEG(res.D_s.hi, res.D_s.lo);
+	} else {
+		res.D_s.lo = (uint32_t)tt;
+	}
+
+#elif defined(HAVE_INT64)
+
+	res.q_s = tt;
+
+#else
+	/*
+	 * shifting negative signed quantities is compiler-dependent, so
+	 * we better avoid it and do it all manually. And shifting more
+	 * than the width of a quantity is undefined. Also a don't do!
+	 */
+	if (tt < 0) {
+		tt = -tt;
+		res.D_s.lo = (uint32_t)tt;
+		res.D_s.hi = (uint32_t)(tt >> 32);
+		M_NEG(res.D_s.hi, res.D_s.lo);
+	} else {
+		res.D_s.lo = (uint32_t)tt;
+		res.D_s.hi = (uint32_t)(tt >> 32);
+	}
+
+#endif
+
+	return res;
+}
+
+
+time_t
+vint64_to_time(
+	const vint64 *tv
+	)
+{
+	time_t res;
+
+#if SIZEOF_TIME_T <= 4
+
+	res = (time_t)tv->D_s.lo;
+
+#elif defined(HAVE_INT64)
+
+	res = (time_t)tv->q_s;
+
+#else
+
+	res = ((time_t)tv->d_s.hi << 32) | tv->D_s.lo;
+
+#endif
+
+	return res;
+} 
+
+/*
+ *---------------------------------------------------------------------
+ * Get the build date & time
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_get_build_date(
+	struct calendar * jd
+	)
+{
+	/* The C standard tells us the format of '__DATE__':
+	 *
+	 * __DATE__ The date of translation of the preprocessing
+	 * translation unit: a character string literal of the form "Mmm
+	 * dd yyyy", where the names of the months are the same as those
+	 * generated by the asctime function, and the first character of
+	 * dd is a space character if the value is less than 10. If the
+	 * date of translation is not available, an
+	 * implementation-defined valid date shall be supplied.
+	 *
+	 * __TIME__ The time of translation of the preprocessing
+	 * translation unit: a character string literal of the form
+	 * "hh:mm:ss" as in the time generated by the asctime
+	 * function. If the time of translation is not available, an
+	 * implementation-defined valid time shall be supplied.
+	 *
+	 * Note that MSVC declares DATE and TIME to be in the local time
+	 * zone, while neither the C standard nor the GCC docs make any
+	 * statement about this. As a result, we may be +/-12hrs off
+	 * UTC.  But for practical purposes, this should not be a
+	 * problem.
+	 *
+	 */
+	static const char build[] = __TIME__ "/" __DATE__;
+	static const char mlist[] = "JanFebMarAprMayJunJulAugSepOctNovDec";
+
+	char		  monstr[4];
+	const char *	  cp;
+	unsigned short	  hour, minute, second, day, year;
+ 	/* Note: The above quantities are used for sscanf 'hu' format,
+	 * so using 'uint16_t' is contra-indicated!
+	 */
+
+#ifdef DEBUG
+	static int        ignore  = 0;
+#endif
+	
+	ZERO(*jd);
+	jd->year     = 1970;
+	jd->month    = 1;
+	jd->monthday = 1;
+
+#ifdef DEBUG
+	/* check environment if build date should be ignored */
+	if (0 == ignore) {
+	    const char * envstr;
+	    envstr = getenv("NTPD_IGNORE_BUILD_DATE");
+	    ignore = 1 + (envstr && (!*envstr || !strcasecmp(envstr, "yes")));
+	}
+	if (ignore > 1)
+	    return FALSE;
+#endif
+
+	if (6 == sscanf(build, "%hu:%hu:%hu/%3s %hu %hu",
+			&hour, &minute, &second, monstr, &day, &year)) {
+		cp = strstr(mlist, monstr);
+		if (NULL != cp) {
+			jd->year     = year;
+			jd->month    = (uint8_t)((cp - mlist) / 3 + 1);
+			jd->monthday = (uint8_t)day;
+			jd->hour     = (uint8_t)hour;
+			jd->minute   = (uint8_t)minute;
+			jd->second   = (uint8_t)second;
+
+			return TRUE;
+		}
+	}
+
+	return FALSE;
+}
+
+
+/*
+ *---------------------------------------------------------------------
+ * basic calendar stuff
+ * --------------------------------------------------------------------
+ */
+
+/* month table for a year starting with March,1st */
+static const uint16_t shift_month_table[13] = {
+	0, 31, 61, 92, 122, 153, 184, 214, 245, 275, 306, 337, 366
+};
+
+/* month tables for years starting with January,1st; regular & leap */
+static const uint16_t real_month_table[2][13] = {
+	/* -*- table for regular years -*- */
+	{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365 },
+	/* -*- table for leap years -*- */
+	{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366 }
+};
+
+/*
+ * Some notes on the terminology:
+ *
+ * We use the proleptic Gregorian calendar, which is the Gregorian
+ * calendar extended in both directions ad infinitum. This totally
+ * disregards the fact that this calendar was invented in 1582, and
+ * was adopted at various dates over the world; sometimes even after
+ * the start of the NTP epoch.
+ *
+ * Normally date parts are given as current cycles, while time parts
+ * are given as elapsed cycles:
+ *
+ * 1970-01-01/03:04:05 means 'IN the 1970st. year, IN the first month,
+ * ON the first day, with 3hrs, 4minutes and 5 seconds elapsed.
+ *
+ * The basic calculations for this calendar implementation deal with
+ * ELAPSED date units, which is the number of full years, full months
+ * and full days before a date: 1970-01-01 would be (1969, 0, 0) in
+ * that notation.
+ *
+ * To ease the numeric computations, month and day values outside the
+ * normal range are acceptable: 2001-03-00 will be treated as the day
+ * before 2001-03-01, 2000-13-32 will give the same result as
+ * 2001-02-01 and so on.
+ *
+ * 'rd' or 'RD' is used as an abbreviation for the latin 'rata die'
+ * (day number).  This is the number of days elapsed since 0000-12-31
+ * in the proleptic Gregorian calendar. The begin of the Christian Era
+ * (0001-01-01) is RD(1).
+ *
+ * 
+ * Some notes on the implementation:
+ *
+ * Calendar algorithms thrive on the division operation, which is one of
+ * the slowest numerical operations in any CPU. What saves us here from
+ * abysmal performance is the fact that all divisions are divisions by
+ * constant numbers, and most compilers can do this by a multiplication
+ * operation.  But this might not work when using the div/ldiv/lldiv
+ * function family, because many compilers are not able to do inline
+ * expansion of the code with following optimisation for the
+ * constant-divider case.
+ *
+ * Also div/ldiv/lldiv are defined in terms of int/long/longlong, which
+ * are inherently target dependent. Nothing that could not be cured with
+ * autoconf, but still a mess...
+ *
+ * Furthermore, we need floor division while C demands truncation to
+ * zero, so additional steps are required to make sure the algorithms
+ * work.
+ *
+ * For all this, all divisions by constant are coded manually, even when
+ * there is a joined div/mod operation: The optimiser should sort that
+ * out, if possible.
+ *
+ * Finally, the functions do not check for overflow conditions. This
+ * is a sacrifice made for execution speed; since a 32-bit day counter
+ * covers +/- 5,879,610 years, this should not pose a problem here.
+ */
+
+
+/*
+ * ==================================================================
+ *
+ * General algorithmic stuff
+ *
+ * ==================================================================
+ */
+
+/*
+ *---------------------------------------------------------------------
+ * Do a periodic extension of 'value' around 'pivot' with a period of
+ * 'cycle'.
+ *
+ * The result 'res' is a number that holds to the following properties:
+ *
+ *   1)	 res MOD cycle == value MOD cycle
+ *   2)	 pivot <= res < pivot + cycle
+ *	 (replace </<= with >/>= for negative cycles)
+ *
+ * where 'MOD' denotes the modulo operator for FLOOR DIVISION, which
+ * is not the same as the '%' operator in C: C requires division to be
+ * a truncated division, where remainder and dividend have the same
+ * sign if the remainder is not zero, whereas floor division requires
+ * divider and modulus to have the same sign for a non-zero modulus.
+ *
+ * This function has some useful applications:
+ *
+ * + let Y be a calendar year and V a truncated 2-digit year: then
+ *	periodic_extend(Y-50, V, 100)
+ *   is the closest expansion of the truncated year with respect to
+ *   the full year, that is a 4-digit year with a difference of less
+ *   than 50 years to the year Y. ("century unfolding")
+ *
+ * + let T be a UN*X time stamp and V be seconds-of-day: then
+ *	perodic_extend(T-43200, V, 86400)
+ *   is a time stamp that has the same seconds-of-day as the input
+ *   value, with an absolute difference to T of <= 12hrs.  ("day
+ *   unfolding")
+ *
+ * + Wherever you have a truncated periodic value and a non-truncated
+ *   base value and you want to match them somehow...
+ *
+ * Basically, the function delivers 'pivot + (value - pivot) % cycle',
+ * but the implementation takes some pains to avoid internal signed
+ * integer overflows in the '(value - pivot) % cycle' part and adheres
+ * to the floor division convention.
+ *
+ * If 64bit scalars where available on all intended platforms, writing a
+ * version that uses 64 bit ops would be easy; writing a general
+ * division routine for 64bit ops on a platform that can only do
+ * 32/16bit divisions and is still performant is a bit more
+ * difficult. Since most usecases can be coded in a way that does only
+ * require the 32-bit version a 64bit version is NOT provided here.
+ * ---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_periodic_extend(
+	int32_t pivot,
+	int32_t value,
+	int32_t cycle
+	)
+{
+	uint32_t diff;
+	char	 cpl = 0; /* modulo complement flag */
+	char	 neg = 0; /* sign change flag	    */
+
+	/* make the cycle positive and adjust the flags */ 
+	if (cycle < 0) {
+		cycle = - cycle;
+		neg ^= 1;
+		cpl ^= 1;
+	}
+	/* guard against div by zero or one */
+	if (cycle > 1) {
+		/*
+		 * Get absolute difference as unsigned quantity and
+		 * the complement flag. This is done by always
+		 * subtracting the smaller value from the bigger
+		 * one. This implementation works only on a two's
+		 * complement machine!
+		 */
+		if (value >= pivot) {
+			diff = (uint32_t)value - (uint32_t)pivot;
+		} else {
+			diff = (uint32_t)pivot - (uint32_t)value;
+			cpl ^= 1;
+		}
+		diff %= (uint32_t)cycle;
+		if (diff) {
+			if (cpl)
+				diff = cycle - diff;
+			if (neg)
+				diff = ~diff + 1;
+			pivot += diff;
+		}
+	}
+	return pivot;
+}
+
+/*
+ *-------------------------------------------------------------------
+ * Convert a timestamp in NTP scale to a 64bit seconds value in the UN*X
+ * scale with proper epoch unfolding around a given pivot or the current
+ * system time. This function happily accepts negative pivot values as
+ * timestamps befor 1970-01-01, so be aware of possible trouble on
+ * platforms with 32bit 'time_t'!
+ *
+ * This is also a periodic extension, but since the cycle is 2^32 and
+ * the shift is 2^31, we can do some *very* fast math without explicit
+ * divisions.
+ *-------------------------------------------------------------------
+ */
+vint64
+ntpcal_ntp_to_time(
+	uint32_t	ntp,
+	const time_t *	pivot
+	)
+{
+	vint64 res;
+
+#ifdef HAVE_INT64
+
+	res.q_s = (pivot != NULL) 
+		      ? *pivot
+		      : now();	
+	res.Q_s -= 0x80000000;		/* unshift of half range */
+	ntp	-= (uint32_t)JAN_1970;	/* warp into UN*X domain */
+	ntp	-= res.D_s.lo;		/* cycle difference	 */
+	res.Q_s += (uint64_t)ntp;	/* get expanded time	 */
+
+#else /* no 64bit scalars */
+	
+	time_t tmp;
+	
+	tmp = (pivot != NULL) 
+		  ? *pivot
+		  : now();	
+	res = time_to_vint64(&tmp);
+	M_SUB(res.D_s.hi, res.D_s.lo, 0, 0x80000000);
+	ntp -= (uint32_t)JAN_1970;	/* warp into UN*X domain */
+	ntp -= res.D_s.lo;		/* cycle difference	 */
+	M_ADD(res.D_s.hi, res.D_s.lo, 0, ntp);
+
+#endif /* no 64bit scalars */
+
+	return res;
+}
+
+/*
+ *-------------------------------------------------------------------
+ * Convert a timestamp in NTP scale to a 64bit seconds value in the NTP
+ * scale with proper epoch unfolding around a given pivot or the current
+ * system time.
+ *
+ * Note: The pivot must be given in the UN*X time domain!
+ *
+ * This is also a periodic extension, but since the cycle is 2^32 and
+ * the shift is 2^31, we can do some *very* fast math without explicit
+ * divisions.
+ *-------------------------------------------------------------------
+ */
+vint64
+ntpcal_ntp_to_ntp(
+	uint32_t      ntp,
+	const time_t *pivot
+	)
+{
+	vint64 res;
+
+#ifdef HAVE_INT64
+
+	res.q_s = (pivot)
+		      ? *pivot
+		      : now();
+	res.Q_s -= 0x80000000;		/* unshift of half range */
+	res.Q_s += (uint32_t)JAN_1970;	/* warp into NTP domain	 */
+	ntp	-= res.D_s.lo;		/* cycle difference	 */
+	res.Q_s += (uint64_t)ntp;	/* get expanded time	 */
+
+#else /* no 64bit scalars */
+	
+	time_t tmp;
+	
+	tmp = (pivot)
+		  ? *pivot
+		  : now();
+	res = time_to_vint64(&tmp);
+	M_SUB(res.D_s.hi, res.D_s.lo, 0, 0x80000000u);
+	M_ADD(res.D_s.hi, res.D_s.lo, 0, (uint32_t)JAN_1970);/*into NTP */
+	ntp -= res.D_s.lo;		/* cycle difference	 */
+	M_ADD(res.D_s.hi, res.D_s.lo, 0, ntp);
+
+#endif /* no 64bit scalars */
+
+	return res;
+}
+
+
+/*
+ * ==================================================================
+ *
+ * Splitting values to composite entities
+ *
+ * ==================================================================
+ */
+
+/*
+ *------------------------------------------------------------------- 
+ * Split a 64bit seconds value into elapsed days in 'res.hi' and
+ * elapsed seconds since midnight in 'res.lo' using explicit floor
+ * division. This function happily accepts negative time values as
+ * timestamps before the respective epoch start.
+ * -------------------------------------------------------------------
+ */
+ntpcal_split
+ntpcal_daysplit(
+	const vint64 *ts
+	)
+{
+	ntpcal_split res;
+
+#ifdef HAVE_INT64
+
+	/* manual floor division by SECSPERDAY */
+	res.hi = (int32_t)(ts->q_s / SECSPERDAY);
+	res.lo = (int32_t)(ts->q_s % SECSPERDAY);
+	if (res.lo < 0) {
+		res.hi -= 1;
+		res.lo += SECSPERDAY;
+	}
+
+#else
+
+	/*
+	 * since we do not have 64bit ops, we have to this by hand.
+	 * Luckily SECSPERDAY is 86400 is 675*128, so we do the division
+	 * using chained 32/16 bit divisions and shifts.
+	 */
+	vint64	 op;
+	uint32_t q, r, a;
+	int	 isneg;
+
+	memcpy(&op, ts, sizeof(op));
+	/* fix sign */
+	isneg = M_ISNEG(op.D_s.hi);
+	if (isneg)
+		M_NEG(op.D_s.hi, op.D_s.lo);
+		
+	/* save remainder of DIV 128, shift for divide */
+	r  = op.D_s.lo & 127; /* save remainder bits */
+	op.D_s.lo = (op.D_s.lo >> 7) | (op.D_s.hi << 25);
+	op.D_s.hi = (op.D_s.hi >> 7);
+
+	/* now do a mnual division, trying to remove as many ops as
+	 * possible -- division is always slow! An since we do not have
+	 * the advantage of a specific 64/32 bit or even a specific 32/16
+	 * bit division op, but must use the general 32/32bit division
+	 * even if we *know* the divider fits into unsigned 16 bits, the
+	 * exra code pathes should pay off.
+	 */
+	a = op.D_s.hi;
+	if (a > 675u)
+		a = a % 675u;
+	if (a) {
+		a = (a << 16) | op.W_s.lh;
+		q = a / 675u;
+		a = a % 675u;
+
+		a = (a << 16) | op.W_s.ll;
+		q = (q << 16) | (a / 675u);
+	} else {
+		a = op.D_s.lo;
+		q = a / 675u;
+	}
+	a = a % 675u;
+
+	/* assemble remainder */
+	r |= a << 7;
+
+	/* fix sign of result */
+	if (isneg) {
+		if (r) {
+			r = SECSPERDAY - r;
+			q = ~q;
+		} else
+			q = ~q + 1;
+	}
+	
+	res.hi = q;
+	res.lo = r;
+
+#endif	
+	return res;
+}
+
+/*
+ *------------------------------------------------------------------- 
+ * Split a 32bit seconds value into h/m/s and excessive days.  This
+ * function happily accepts negative time values as timestamps before
+ * midnight.
+ * -------------------------------------------------------------------
+ */
+static int32_t
+priv_timesplit(
+	int32_t split[3],
+	int32_t ts
+	)
+{
+	int32_t days = 0;
+
+	/* make sure we have a positive offset into a day */
+	if (ts < 0 || ts >= SECSPERDAY) {
+		days = ts / SECSPERDAY;
+		ts   = ts % SECSPERDAY;
+		if (ts < 0) {
+			days -= 1;
+			ts   += SECSPERDAY;
+		}
+	}
+
+	/* get secs, mins, hours */
+	split[2] = (uint8_t)(ts % SECSPERMIN);
+	ts /= SECSPERMIN;
+	split[1] = (uint8_t)(ts % MINSPERHR);
+	split[0] = (uint8_t)(ts / MINSPERHR);
+
+	return days;
+}
+
+/*
+ * ---------------------------------------------------------------------
+ * Given the number of elapsed days in the calendar era, split this
+ * number into the number of elapsed years in 'res.hi' and the number
+ * of elapsed days of that year in 'res.lo'.
+ *
+ * if 'isleapyear' is not NULL, it will receive an integer that is 0 for
+ * regular years and a non-zero value for leap years.
+ *---------------------------------------------------------------------
+ */
+ntpcal_split
+ntpcal_split_eradays(
+	int32_t days,
+	int  *isleapyear
+	)
+{
+	ntpcal_split res;
+	int32_t	     n400, n100, n004, n001, yday; /* calendar year cycles */
+	
+	/*
+	 * Split off calendar cycles, using floor division in the first
+	 * step. After that first step, simple division does it because
+	 * all operands are positive; alas, we have to be aware of the
+	 * possibe cycle overflows for 100 years and 1 year, caused by
+	 * the additional leap day.
+	 */
+	n400 = days / GREGORIAN_CYCLE_DAYS;
+	yday = days % GREGORIAN_CYCLE_DAYS;
+	if (yday < 0) {
+		n400 -= 1;
+		yday += GREGORIAN_CYCLE_DAYS;
+	}
+	n100 = yday / GREGORIAN_NORMAL_CENTURY_DAYS;
+	yday = yday % GREGORIAN_NORMAL_CENTURY_DAYS;
+	n004 = yday / GREGORIAN_NORMAL_LEAP_CYCLE_DAYS;
+	yday = yday % GREGORIAN_NORMAL_LEAP_CYCLE_DAYS;
+	n001 = yday / DAYSPERYEAR;
+	yday = yday % DAYSPERYEAR;
+	
+	/*
+	 * check for leap cycle overflows and calculate the leap flag
+	 * if needed
+	 */
+	if ((n001 | n100) > 3) {
+		/* hit last day of leap year */
+		n001 -= 1;
+		yday += DAYSPERYEAR;
+		if (isleapyear)
+			*isleapyear = 1;
+	} else if (isleapyear)
+		*isleapyear = (n001 == 3) && ((n004 != 24) || (n100 == 3));
+	
+	/* now merge the cycles to elapsed years, using horner scheme */
+	res.hi = ((4*n400 + n100)*25 + n004)*4 + n001;
+	res.lo = yday;
+	
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Given a number of elapsed days in a year and a leap year indicator,
+ * split the number of elapsed days into the number of elapsed months in
+ * 'res.hi' and the number of elapsed days of that month in 'res.lo'.
+ *
+ * This function will fail and return {-1,-1} if the number of elapsed
+ * days is not in the valid range!
+ *---------------------------------------------------------------------
+ */
+ntpcal_split
+ntpcal_split_yeardays(
+	int32_t eyd,
+	int     isleapyear
+	)
+{
+	ntpcal_split    res;
+	const uint16_t *lt;	/* month length table	*/
+
+	/* check leap year flag and select proper table */
+	lt = real_month_table[(isleapyear != 0)];
+	if (0 <= eyd && eyd < lt[12]) {
+		/* get zero-based month by approximation & correction step */
+		res.hi = eyd >> 5;	   /* approx month; might be 1 too low */
+		if (lt[res.hi + 1] <= eyd) /* fixup approximative month value  */
+			res.hi += 1;
+		res.lo = eyd - lt[res.hi];
+	} else {
+		res.lo = res.hi = -1;
+	}
+
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert a RD into the date part of a 'struct calendar'.
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_rd_to_date(
+	struct calendar *jd,
+	int32_t		 rd
+	)
+{
+	ntpcal_split split;
+	int	     leaps;
+	int	     retv;
+
+	leaps = 0;
+	retv = 0;
+	/* get day-of-week first */
+	jd->weekday = rd % 7;
+	if (jd->weekday >= 7)	/* unsigned! */
+		jd->weekday += 7;
+
+	split = ntpcal_split_eradays(rd - 1, &leaps);
+	retv  = leaps;
+	/* get year and day-of-year */
+	jd->year = (uint16_t)split.hi + 1;
+	if (jd->year != split.hi + 1) {
+		jd->year = 0;
+		retv	 = -1;	/* bletch. overflow trouble. */
+	}
+	jd->yearday = (uint16_t)split.lo + 1;
+
+	/* convert to month and mday */
+	split = ntpcal_split_yeardays(split.lo, leaps);
+	jd->month    = (uint8_t)split.hi + 1;
+	jd->monthday = (uint8_t)split.lo + 1;
+
+	return retv ? retv : leaps;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert a RD into the date part of a 'struct tm'.
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_rd_to_tm(
+	struct tm  *utm,
+	int32_t	    rd
+	)
+{
+	ntpcal_split split;
+	int	     leaps;
+
+	leaps = 0;
+	/* get day-of-week first */
+	utm->tm_wday = rd % 7;
+	if (utm->tm_wday < 0)
+		utm->tm_wday += 7;
+
+	/* get year and day-of-year */
+	split = ntpcal_split_eradays(rd - 1, &leaps);
+	utm->tm_year = split.hi - 1899;
+	utm->tm_yday = split.lo;	/* 0-based */
+
+	/* convert to month and mday */
+	split = ntpcal_split_yeardays(split.lo, leaps);
+	utm->tm_mon  = split.hi;	/* 0-based */
+	utm->tm_mday = split.lo + 1;	/* 1-based */
+
+	return leaps;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Take a value of seconds since midnight and split it into hhmmss in a
+ * 'struct calendar'.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_daysec_to_date(
+	struct calendar *jd,
+	int32_t		sec
+	)
+{
+	int32_t days;
+	int   ts[3];
+	
+	days = priv_timesplit(ts, sec);
+	jd->hour   = (uint8_t)ts[0];
+	jd->minute = (uint8_t)ts[1];
+	jd->second = (uint8_t)ts[2];
+
+	return days;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Take a value of seconds since midnight and split it into hhmmss in a
+ * 'struct tm'.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_daysec_to_tm(
+	struct tm *utm,
+	int32_t	   sec
+	)
+{
+	int32_t days;
+	int32_t ts[3];
+	
+	days = priv_timesplit(ts, sec);
+	utm->tm_hour = ts[0];
+	utm->tm_min  = ts[1];
+	utm->tm_sec  = ts[2];
+
+	return days;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * take a split representation for day/second-of-day and day offset
+ * and convert it to a 'struct calendar'. The seconds will be normalised
+ * into the range of a day, and the day will be adjusted accordingly.
+ *
+ * returns >0 if the result is in a leap year, 0 if in a regular
+ * year and <0 if the result did not fit into the calendar struct.
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_daysplit_to_date(
+	struct calendar	   *jd,
+	const ntpcal_split *ds,
+	int32_t		    dof
+	)
+{
+	dof += ntpcal_daysec_to_date(jd, ds->lo);
+	return ntpcal_rd_to_date(jd, ds->hi + dof);
+}
+
+/*
+ *---------------------------------------------------------------------
+ * take a split representation for day/second-of-day and day offset
+ * and convert it to a 'struct tm'. The seconds will be normalised
+ * into the range of a day, and the day will be adjusted accordingly.
+ *
+ * returns 1 if the result is in a leap year and zero if in a regular
+ * year.
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_daysplit_to_tm(
+	struct tm	   *utm,
+	const ntpcal_split *ds ,
+	int32_t		    dof
+	)
+{
+	dof += ntpcal_daysec_to_tm(utm, ds->lo);
+
+	return ntpcal_rd_to_tm(utm, ds->hi + dof);
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Take a UN*X time and convert to a calendar structure.
+ *---------------------------------------------------------------------
+ */
+int
+ntpcal_time_to_date(
+	struct calendar	*jd,
+	const vint64	*ts
+	)
+{
+	ntpcal_split ds;
+
+	ds = ntpcal_daysplit(ts);
+	ds.hi += ntpcal_daysec_to_date(jd, ds.lo);
+	ds.hi += DAY_UNIX_STARTS;
+
+	return ntpcal_rd_to_date(jd, ds.hi);
+}
+
+
+/*
+ * ==================================================================
+ *
+ * merging composite entities
+ *
+ * ==================================================================
+ */
+
+/*
+ *---------------------------------------------------------------------
+ * Merge a number of days and a number of seconds into seconds,
+ * expressed in 64 bits to avoid overflow.
+ *---------------------------------------------------------------------
+ */
+vint64
+ntpcal_dayjoin(
+	int32_t days,
+	int32_t secs
+	)
+{
+	vint64 res;
+
+#ifdef HAVE_INT64
+
+	res.q_s	 = days;
+	res.q_s *= SECSPERDAY;
+	res.q_s += secs;
+
+#else
+
+	uint32_t p1, p2;
+	int	 isneg;
+
+	/*
+	 * res = days *86400 + secs, using manual 16/32 bit
+	 * multiplications and shifts.
+	 */
+	isneg = (days < 0);
+	if (isneg)
+		days = -days;
+
+	/* assemble days * 675 */
+	res.D_s.lo = (days & 0xFFFF) * 675u;
+	res.D_s.hi = 0;
+	p1 = (days >> 16) * 675u;
+	p2 = p1 >> 16;
+	p1 = p1 << 16;
+	M_ADD(res.D_s.hi, res.D_s.lo, p2, p1);
+
+	/* mul by 128, using shift */
+	res.D_s.hi = (res.D_s.hi << 7) | (res.D_s.lo >> 25);
+	res.D_s.lo = (res.D_s.lo << 7);
+
+	/* fix sign */
+	if (isneg)
+		M_NEG(res.D_s.hi, res.D_s.lo);
+	
+	/* properly add seconds */
+	p2 = 0;
+	if (secs < 0) {
+		p1 = (uint32_t)-secs;
+		M_NEG(p2, p1);
+	} else {
+		p1 = (uint32_t)secs;
+	}
+	M_ADD(res.D_s.hi, res.D_s.lo, p2, p1);
+
+#endif	
+
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert elapsed years in Era into elapsed days in Era.
+ *
+ * To accomodate for negative values of years, floor division would be
+ * required for all division operations. This can be eased by first
+ * splitting the years into full 400-year cycles and years in the
+ * cycle. Only this operation must be coded as a full floor division; as
+ * the years in the cycle is a non-negative number, all other divisions
+ * can be regular truncated divisions.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_days_in_years(
+	int32_t years
+	)
+{
+	int32_t cycle; /* full gregorian cycle */
+
+	/* split off full calendar cycles, using floor division */
+	cycle = years / 400;
+	years = years % 400;
+	if (years < 0) {
+		cycle -= 1;
+		years += 400;
+	}
+
+	/*
+	 * Calculate days in cycle. years now is a non-negative number,
+	 * holding the number of years in the 400-year cycle.
+	 */
+	return cycle * GREGORIAN_CYCLE_DAYS
+	     + years * DAYSPERYEAR	/* days inregular years	*/
+	     + years / 4		/* 4 year leap rule	*/
+	     - years / 100;		/* 100 year leap rule	*/
+	/* the 400-year rule does not apply due to full-cycle split-off */
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert a number of elapsed month in a year into elapsed days in year.
+ *
+ * The month will be normalized, and 'res.hi' will contain the
+ * excessive years that must be considered when converting the years,
+ * while 'res.lo' will contain the number of elapsed days since start
+ * of the year.
+ *
+ * This code uses the shifted-month-approach to convert month to days,
+ * because then there is no need to have explicit leap year
+ * information.	 The slight disadvantage is that for most month values
+ * the result is a negative value, and the year excess is one; the
+ * conversion is then simply based on the start of the following year.
+ *---------------------------------------------------------------------
+ */
+ntpcal_split
+ntpcal_days_in_months(
+	int32_t m
+	)
+{
+	ntpcal_split res;
+
+	/* normalize month into range */
+	res.hi = 0;
+	res.lo = m;
+	if (res.lo < 0 || res.lo >= 12) {
+		res.hi = res.lo / 12;
+		res.lo = res.lo % 12;
+		if (res.lo < 0) {
+			res.hi -= 1;
+			res.lo += 12;
+		}
+	}
+
+	/* add 10 month for year starting with march */
+	if (res.lo < 2)
+		res.lo += 10;
+	else {
+		res.hi += 1;
+		res.lo -= 2;
+	}
+
+	/* get cummulated days in year with unshift */
+	res.lo = shift_month_table[res.lo] - 306;
+
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert ELAPSED years/months/days of gregorian calendar to elapsed
+ * days in Gregorian epoch.
+ *
+ * If you want to convert years and days-of-year, just give a month of
+ * zero.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_edate_to_eradays(
+	int32_t years,
+	int32_t mons,
+	int32_t mdays
+	)
+{
+	ntpcal_split tmp;
+	int32_t	     res;
+
+	if (mons) {
+		tmp = ntpcal_days_in_months(mons);
+		res = ntpcal_days_in_years(years + tmp.hi) + tmp.lo;
+	} else
+		res = ntpcal_days_in_years(years);
+	res += mdays;
+
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert ELAPSED years/months/days of gregorian calendar to elapsed
+ * days in year.
+ *
+ * Note: This will give the true difference to the start of the given year,
+ * even if months & days are off-scale.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_edate_to_yeardays(
+	int32_t years,
+	int32_t mons,
+	int32_t mdays
+	)
+{
+	ntpcal_split tmp;
+
+	if (0 <= mons && mons < 12) {
+		years += 1;
+		mdays += real_month_table[is_leapyear(years)][mons];
+	} else {
+		tmp = ntpcal_days_in_months(mons);
+		mdays += tmp.lo
+		       + ntpcal_days_in_years(years + tmp.hi)
+		       - ntpcal_days_in_years(years);
+	}
+
+	return mdays;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert elapsed days and the hour/minute/second information into
+ * total seconds.
+ *
+ * If 'isvalid' is not NULL, do a range check on the time specification
+ * and tell if the time input is in the normal range, permitting for a
+ * single leapsecond.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_etime_to_seconds(
+	int32_t hours,
+	int32_t minutes,
+	int32_t seconds
+	)
+{
+	int32_t res;
+
+	res = (hours * MINSPERHR + minutes) * SECSPERMIN + seconds;
+
+	return res;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert the date part of a 'struct tm' (that is, year, month,
+ * day-of-month) into the RD of that day.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_tm_to_rd(
+	const struct tm *utm
+	)
+{
+	return ntpcal_edate_to_eradays(utm->tm_year + 1899,
+				       utm->tm_mon,
+				       utm->tm_mday - 1) + 1;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * Convert the date part of a 'struct calendar' (that is, year, month,
+ * day-of-month) into the RD of that day.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_date_to_rd(
+	const struct calendar *jd
+	)
+{
+	return ntpcal_edate_to_eradays((int32_t)jd->year - 1,
+				       (int32_t)jd->month - 1,
+				       (int32_t)jd->monthday - 1) + 1;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * convert a year number to rata die of year start
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_year_to_ystart(
+	int32_t year
+	)
+{
+	return ntpcal_days_in_years(year - 1) + 1;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * For a given RD, get the RD of the associated year start,
+ * that is, the RD of the last January,1st on or before that day.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_rd_to_ystart(
+	int32_t rd
+	)
+{
+	/*
+	 * Rather simple exercise: split the day number into elapsed
+	 * years and elapsed days, then remove the elapsed days from the
+	 * input value. Nice'n sweet...
+	 */
+	return rd - ntpcal_split_eradays(rd - 1, NULL).lo;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * For a given RD, get the RD of the associated month start.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_rd_to_mstart(
+	int32_t rd
+	)
+{
+	ntpcal_split split;
+	int	     leaps;
+
+	split = ntpcal_split_eradays(rd - 1, &leaps);
+	split = ntpcal_split_yeardays(split.lo, leaps);
+
+	return rd - split.lo;
+}
+
+/*
+ *---------------------------------------------------------------------
+ * take a 'struct calendar' and get the seconds-of-day from it.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_date_to_daysec(
+	const struct calendar *jd
+	)
+{
+	return ntpcal_etime_to_seconds(jd->hour, jd->minute,
+				       jd->second);
+}
+
+/*
+ *---------------------------------------------------------------------
+ * take a 'struct tm' and get the seconds-of-day from it.
+ *---------------------------------------------------------------------
+ */
+int32_t
+ntpcal_tm_to_daysec(
+	const struct tm *utm
+	)
+{
+	return ntpcal_etime_to_seconds(utm->tm_hour, utm->tm_min,
+				       utm->tm_sec);
+}
+
+/*
+ *---------------------------------------------------------------------
+ * take a 'struct calendar' and convert it to a 'time_t'
+ *---------------------------------------------------------------------
+ */
+time_t
+ntpcal_date_to_time(
+	const struct calendar *jd
+	)
+{
+	vint64  join;
+	int32_t days, secs;
+
+	days = ntpcal_date_to_rd(jd) - DAY_UNIX_STARTS;
+	secs = ntpcal_date_to_daysec(jd);
+	join = ntpcal_dayjoin(days, secs);
+
+	return vint64_to_time(&join);
+}
+
+
+/*
+ * ==================================================================
+ *
+ * extended and unchecked variants of caljulian/caltontp
+ *
+ * ==================================================================
+ */
+int
+ntpcal_ntp64_to_date(
+	struct calendar *jd,
+	const vint64    *ntp
+	)
+{
+	ntpcal_split ds;
+	
+	ds = ntpcal_daysplit(ntp);
+	ds.hi += ntpcal_daysec_to_date(jd, ds.lo);
+
+	return ntpcal_rd_to_date(jd, ds.hi + DAY_NTP_STARTS);
+}
+
+int
+ntpcal_ntp_to_date(
+	struct calendar *jd,
+	uint32_t	 ntp,
+	const time_t	*piv
+	)
+{
+	vint64	ntp64;
+	
+	/*
+	 * Unfold ntp time around current time into NTP domain. Split
+	 * into days and seconds, shift days into CE domain and
+	 * process the parts.
+	 */
+	ntp64 = ntpcal_ntp_to_ntp(ntp, piv);
+	return ntpcal_ntp64_to_date(jd, &ntp64);
+}
+
+
+vint64
+ntpcal_date_to_ntp64(
+	const struct calendar *jd
+	)
+{
+	/*
+	 * Convert date to NTP. Ignore yearday, use d/m/y only.
+	 */
+	return ntpcal_dayjoin(ntpcal_date_to_rd(jd) - DAY_NTP_STARTS,
+			      ntpcal_date_to_daysec(jd));
+}
+
+
+uint32_t
+ntpcal_date_to_ntp(
+	const struct calendar *jd
+	)
+{
+	/*
+	 * Get lower half of 64-bit NTP timestamp from date/time.
+	 */
+	return ntpcal_date_to_ntp64(jd).d_s.lo;
+}
+
+
+
+/*
+ * ==================================================================
+ *
+ * day-of-week calculations
+ *
+ * ==================================================================
+ */
+/*
+ * Given a RataDie and a day-of-week, calculate a RDN that is reater-than,
+ * greater-or equal, closest, less-or-equal or less-than the given RDN
+ * and denotes the given day-of-week
+ */
+int32_t
+ntpcal_weekday_gt(
+	int32_t rdn,
+	int32_t dow
+	)
+{
+	return ntpcal_periodic_extend(rdn+1, dow, 7);
+}
+
+int32_t
+ntpcal_weekday_ge(
+	int32_t rdn,
+	int32_t dow
+	)
+{
+	return ntpcal_periodic_extend(rdn, dow, 7);
+}
+
+int32_t
+ntpcal_weekday_close(
+	int32_t rdn,
+	int32_t dow
+	)
+{
+	return ntpcal_periodic_extend(rdn-3, dow, 7);
+}
+
+int32_t
+ntpcal_weekday_le(
+	int32_t rdn,
+	int32_t dow
+	)
+{
+	return ntpcal_periodic_extend(rdn, dow, -7);
+}
+
+int32_t
+ntpcal_weekday_lt(
+	int32_t rdn,
+	int32_t dow
+	)
+{
+	return ntpcal_periodic_extend(rdn-1, dow, -7);
+}
+
+/*
+ * ==================================================================
+ *
+ * ISO week-calendar conversions
+ *
+ * The ISO8601 calendar defines a calendar of years, weeks and weekdays.
+ * It is related to the Gregorian calendar, and a ISO year starts at the
+ * Monday closest to Jan,1st of the corresponding Gregorian year.  A ISO
+ * calendar year has always 52 or 53 weeks, and like the Grogrian
+ * calendar the ISO8601 calendar repeats itself every 400 years, or
+ * 146097 days, or 20871 weeks.
+ *
+ * While it is possible to write ISO calendar functions based on the
+ * Gregorian calendar functions, the following implementation takes a
+ * different approach, based directly on years and weeks.
+ *
+ * Analysis of the tabulated data shows that it is not possible to
+ * interpolate from years to weeks over a full 400 year range; cyclic
+ * shifts over 400 years do not provide a solution here. But it *is*
+ * possible to interpolate over every single century of the 400-year
+ * cycle. (The centennial leap year rule seems to be the culprit here.)
+ *
+ * It can be shown that a conversion from years to weeks can be done
+ * using a linear transformation of the form
+ *
+ *   w = floor( y * a + b )
+ *
+ * where the slope a must hold to
+ *
+ *  52.1780821918 <= a < 52.1791044776
+ *
+ * and b must be chosen according to the selected slope and the number
+ * of the century in a 400-year period.
+ *
+ * The inverse calculation can also be done in this way. Careful scaling
+ * provides an unlimited set of integer coefficients a,k,b that enable
+ * us to write the calulation in the form
+ *
+ *   w = (y * a	 + b ) / k
+ *   y = (w * a' + b') / k'
+ *
+ * In this implementation the values of k and k' are chosen to be
+ * smallest possible powers of two, so the division can be implemented
+ * as shifts if the optimiser chooses to do so.
+ *
+ * ==================================================================
+ */
+
+/*
+ * Given a number of elapsed (ISO-)years since the begin of the
+ * christian era, return the number of elapsed weeks corresponding to
+ * the number of years.
+ */
+int32_t
+isocal_weeks_in_years(
+	int32_t years
+	)
+{
+	/*
+	 * use: w = (y * 53431 + b[c]) / 1024 as interpolation
+	 */
+	static const int32_t bctab[4] = { 449, 157, 889, 597 };
+	int32_t cycle; /* full gregorian cycle */
+	int32_t cents; /* full centuries	   */
+	int32_t weeks; /* accumulated weeks	   */
+
+	/* split off full calendar cycles, using floor division */
+	cycle = years / 400;
+	years = years % 400;
+	if (years < 0) {
+		cycle -= 1;
+		years += 400;
+	}
+
+	/* split off full centuries */
+	cents = years / 100;
+	years = years % 100;
+
+	/*
+	 * calculate elapsed weeks, taking into account that the
+	 * first, third and fourth century have 5218 weeks but the
+	 * second century falls short by one week.
+	 */
+	weeks = (years * 53431 + bctab[cents]) / 1024;
+
+	return cycle * GREGORIAN_CYCLE_WEEKS
+	     + cents * 5218 - (cents > 1)
+	     + weeks;
+}
+
+/*
+ * Given a number of elapsed weeks since the begin of the christian
+ * era, split this number into the number of elapsed years in res.hi
+ * and the excessive number of weeks in res.lo. (That is, res.lo is
+ * the number of elapsed weeks in the remaining partial year.)
+ */
+ntpcal_split
+isocal_split_eraweeks(
+	int32_t weeks
+	)
+{
+	/*
+	 * use: y = (w * 157 + b[c]) / 8192 as interpolation
+	 */
+	static const int32_t bctab[4] = { 85, 131, 17, 62 };
+	ntpcal_split res;
+	int32_t	     cents;
+
+	/*
+	 * split off 400-year cycles, using the fact that a 400-year
+	 * cycle has 146097 days, which is exactly 20871 weeks.
+	 */
+	res.hi = weeks / GREGORIAN_CYCLE_WEEKS;
+	res.lo = weeks % GREGORIAN_CYCLE_WEEKS;
+	if (res.lo < 0) {
+		res.hi -= 1;
+		res.lo += GREGORIAN_CYCLE_WEEKS;
+	}
+	res.hi *= 400;
+
+	/*
+	 * split off centuries, taking into account that the first,
+	 * third and fourth century have 5218 weeks but that the
+	 * second century falls short by one week.
+	 */
+	res.lo += (res.lo >= 10435);
+	cents	= res.lo / 5218;
+	res.lo %= 5218;		/* res.lo is weeks in century now */
+	
+	/* convert elapsed weeks in century to elapsed years and weeks */
+	res.lo	= res.lo * 157 + bctab[cents];
+	res.hi += cents * 100 + res.lo / 8192;
+	res.lo	= (res.lo % 8192) / 157;	
+	
+	return res;
+}
+
+/*
+ * Given a second in the NTP time scale and a pivot, expand the NTP
+ * time stamp around the pivot and convert into an ISO calendar time
+ * stamp.
+ */
+int
+isocal_ntp64_to_date(
+	struct isodate *id,
+	const vint64   *ntp
+	)
+{
+	ntpcal_split ds;
+	int32_t      ts[3];
+	
+	/*
+	 * Split NTP time into days and seconds, shift days into CE
+	 * domain and process the parts.
+	 */
+	ds = ntpcal_daysplit(ntp);
+
+	/* split time part */
+	ds.hi += priv_timesplit(ts, ds.lo);
+	id->hour   = (uint8_t)ts[0];
+	id->minute = (uint8_t)ts[1];
+	id->second = (uint8_t)ts[2];
+
+	/* split date part */
+	ds.lo = ds.hi + DAY_NTP_STARTS - 1;	/* elapsed era days  */
+	ds.hi = ds.lo / 7;			/* elapsed era weeks */
+	ds.lo = ds.lo % 7;			/* elapsed week days */
+	if (ds.lo < 0) {			/* floor division!   */
+		ds.hi -= 1;
+		ds.lo += 7;
+	}
+	id->weekday = (uint8_t)ds.lo + 1;	/* weekday result    */
+
+	ds = isocal_split_eraweeks(ds.hi);	/* elapsed years&week*/
+	id->year = (uint16_t)ds.hi + 1;		/* shift to current  */
+	id->week = (uint8_t )ds.lo + 1;
+
+	return (ds.hi >= 0 && ds.hi < 0xFFFFU);
+}
+
+int
+isocal_ntp_to_date(
+	struct isodate *id,
+	uint32_t	ntp,
+	const time_t   *piv
+	)
+{
+	vint64	ntp64;
+	
+	/*
+	 * Unfold ntp time around current time into NTP domain, then
+	 * convert the full time stamp.
+	 */
+	ntp64 = ntpcal_ntp_to_ntp(ntp, piv);
+	return isocal_ntp64_to_date(id, &ntp64);
+}
+
+/*
+ * Convert a ISO date spec into a second in the NTP time scale,
+ * properly truncated to 32 bit.
+ */
+vint64
+isocal_date_to_ntp64(
+	const struct isodate *id
+	)
+{
+	int32_t weeks, days, secs;
+
+	weeks = isocal_weeks_in_years((int32_t)id->year - 1)
+	      + (int32_t)id->week - 1;
+	days = weeks * 7 + (int32_t)id->weekday;
+	/* days is RDN of ISO date now */
+	secs = ntpcal_etime_to_seconds(id->hour, id->minute, id->second);
+
+	return ntpcal_dayjoin(days - DAY_NTP_STARTS, secs);
+}
+
+uint32_t
+isocal_date_to_ntp(
+	const struct isodate *id
+	)
+{
+	/*
+	 * Get lower half of 64-bit NTP timestamp from date/time.
+	 */
+	return isocal_date_to_ntp64(id).d_s.lo;
+}
+
+/* -*-EOF-*- */
diff --git a/libntp/ntp_intres.c b/libntp/ntp_intres.c
new file mode 100644
index 0000000..2ac70c1
--- /dev/null
+++ b/libntp/ntp_intres.c
@@ -0,0 +1,1143 @@
+/*
+ * ntp_intres.c - Implements a generic blocking worker child or thread,
+ *		  initially to provide a nonblocking solution for DNS
+ *		  name to address lookups available with getaddrinfo().
+ *
+ * This is a new implementation as of 2009 sharing the filename and
+ * very little else with the prior implementation, which used a
+ * temporary file to receive a single set of requests from the parent,
+ * and a NTP mode 7 authenticated request to push back responses.
+ *
+ * A primary goal in rewriting this code was the need to support the
+ * pool configuration directive's requirement to retrieve multiple
+ * addresses resolving a single name, which has previously been
+ * satisfied with blocking resolver calls from the ntpd mainline code.
+ *
+ * A secondary goal is to provide a generic mechanism for other
+ * blocking operations to be delegated to a worker using a common
+ * model for both Unix and Windows ntpd.  ntp_worker.c, work_fork.c,
+ * and work_thread.c implement the generic mechanism.  This file
+ * implements the two current consumers, getaddrinfo_sometime() and the
+ * presently unused getnameinfo_sometime().
+ *
+ * Both routines deliver results to a callback and manage memory
+ * allocation, meaning there is no freeaddrinfo_sometime().
+ *
+ * The initial implementation for Unix uses a pair of unidirectional
+ * pipes, one each for requests and responses, connecting the forked
+ * blocking child worker with the ntpd mainline.  The threaded code
+ * uses arrays of pointers to queue requests and responses.
+ *
+ * The parent drives the process, including scheduling sleeps between
+ * retries.
+ *
+ * Memory is managed differently for a child process, which mallocs
+ * request buffers to read from the pipe into, whereas the threaded
+ * code mallocs a copy of the request to hand off to the worker via
+ * the queueing array.  The resulting request buffer is free()d by
+ * platform-independent code.  A wrinkle is the request needs to be
+ * available to the requestor during response processing.
+ *
+ * Response memory allocation is also platform-dependent.  With a
+ * separate process and pipes, the response is free()d after being
+ * written to the pipe.  With threads, the same memory is handed
+ * over and the requestor frees it after processing is completed.
+ *
+ * The code should be generalized to support threads on Unix using
+ * much of the same code used for Windows initially.
+ *
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "ntp_workimpl.h"
+
+#ifdef WORKER
+
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+
+/**/
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#include <arpa/inet.h>
+/**/
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+
+#if !defined(HAVE_RES_INIT) && defined(HAVE___RES_INIT)
+# define HAVE_RES_INIT
+#endif
+
+#if defined(HAVE_RESOLV_H) && defined(HAVE_RES_INIT)
+# ifdef HAVE_ARPA_NAMESER_H
+#  include <arpa/nameser.h> /* DNS HEADER struct */
+# endif
+# ifdef HAVE_NETDB_H
+#  include <netdb.h>
+# endif
+# include <resolv.h>
+# ifdef HAVE_INT32_ONLY_WITH_DNS
+#  define HAVE_INT32
+# endif
+# ifdef HAVE_U_INT32_ONLY_WITH_DNS
+#  define HAVE_U_INT32
+# endif
+#endif
+
+#include "ntp.h"
+#include "ntp_debug.h"
+#include "ntp_malloc.h"
+#include "ntp_syslog.h"
+#include "ntp_unixtime.h"
+#include "ntp_intres.h"
+#include "intreswork.h"
+
+
+/*
+ * Following are implementations of getaddrinfo_sometime() and
+ * getnameinfo_sometime().  Each is implemented in three routines:
+ *
+ * getaddrinfo_sometime()		getnameinfo_sometime()
+ * blocking_getaddrinfo()		blocking_getnameinfo()
+ * getaddrinfo_sometime_complete()	getnameinfo_sometime_complete()
+ *
+ * The first runs in the parent and marshalls (or serializes) request
+ * parameters into a request blob which is processed in the child by
+ * the second routine, blocking_*(), which serializes the results into
+ * a response blob unpacked by the third routine, *_complete(), which
+ * calls the callback routine provided with the request and frees
+ * _request_ memory allocated by the first routine.  Response memory
+ * is managed by the code which calls the *_complete routines.
+ */
+
+/* === typedefs === */
+typedef struct blocking_gai_req_tag {	/* marshalled args */
+	size_t			octets;
+	u_int			dns_idx;
+	time_t			scheduled;
+	time_t			earliest;
+	struct addrinfo		hints;
+	int			retry;
+	gai_sometime_callback	callback;
+	void *			context;
+	size_t			nodesize;
+	size_t			servsize;
+} blocking_gai_req;
+
+typedef struct blocking_gai_resp_tag {
+	size_t			octets;
+	int			retcode;
+	int			retry;
+	int			gai_errno; /* for EAI_SYSTEM case */
+	int			ai_count;
+	/*
+	 * Followed by ai_count struct addrinfo and then ai_count
+	 * sockaddr_u and finally the canonical name strings.
+	 */
+} blocking_gai_resp;
+
+typedef struct blocking_gni_req_tag {
+	size_t			octets;
+	u_int			dns_idx;
+	time_t			scheduled;
+	time_t			earliest;
+	int			retry;
+	size_t			hostoctets;
+	size_t			servoctets;
+	int			flags;
+	gni_sometime_callback	callback;
+	void *			context;
+	sockaddr_u		socku;
+} blocking_gni_req;
+
+typedef struct blocking_gni_resp_tag {
+	size_t			octets;
+	int			retcode;
+	int			gni_errno; /* for EAI_SYSTEM case */
+	int			retry;
+	size_t			hostoctets;
+	size_t			servoctets;
+	/*
+	 * Followed by hostoctets bytes of null-terminated host,
+	 * then servoctets bytes of null-terminated service.
+	 */
+} blocking_gni_resp;
+
+/* per-DNS-worker state in parent */
+typedef struct dnschild_ctx_tag {
+	u_int	index;
+	time_t	next_dns_timeslot;
+} dnschild_ctx;
+
+/* per-DNS-worker state in worker */
+typedef struct dnsworker_ctx_tag {
+	blocking_child *	c;
+	time_t			ignore_scheduled_before;
+#ifdef HAVE_RES_INIT
+	time_t	next_res_init;
+#endif
+} dnsworker_ctx;
+
+
+/* === variables === */
+dnschild_ctx **		dnschild_contexts;		/* parent */
+u_int			dnschild_contexts_alloc;
+dnsworker_ctx **	dnsworker_contexts;		/* child */
+u_int			dnsworker_contexts_alloc;
+
+#ifdef HAVE_RES_INIT
+static	time_t		next_res_init;
+#endif
+
+
+/* === forward declarations === */
+static	u_int		reserve_dnschild_ctx(void);
+static	u_int		get_dnschild_ctx(void);
+static	void		alloc_dnsworker_context(u_int);
+/* static	void		free_dnsworker_context(u_int); */
+static	dnsworker_ctx *	get_worker_context(blocking_child *, u_int);
+static	void		scheduled_sleep(time_t, time_t,
+					dnsworker_ctx *);
+static	void		manage_dns_retry_interval(time_t *, time_t *,
+						  int *,
+						  time_t *);
+static	int		should_retry_dns(int, int);
+#ifdef HAVE_RES_INIT
+static	void		reload_resolv_conf(dnsworker_ctx *);
+#else
+# define		reload_resolv_conf(wc)		\
+	do {						\
+		(void)(wc);				\
+	} while (FALSE)
+#endif
+static	void		getaddrinfo_sometime_complete(blocking_work_req,
+						      void *, size_t,
+						      void *);
+static	void		getnameinfo_sometime_complete(blocking_work_req,
+						      void *, size_t,
+						      void *);
+
+
+/* === functions === */
+/*
+ * getaddrinfo_sometime - uses blocking child to call getaddrinfo then
+ *			  invokes provided callback completion function.
+ */
+int
+getaddrinfo_sometime(
+	const char *		node,
+	const char *		service,
+	const struct addrinfo *	hints,
+	int			retry,
+	gai_sometime_callback	callback,
+	void *			context
+	)
+{
+	blocking_gai_req *	gai_req;
+	u_int			idx;
+	dnschild_ctx *		child_ctx;
+	size_t			req_size;
+	size_t			nodesize;
+	size_t			servsize;
+	time_t			now;
+	
+	NTP_REQUIRE(NULL != node);
+	if (NULL != hints) {
+		NTP_REQUIRE(0 == hints->ai_addrlen);
+		NTP_REQUIRE(NULL == hints->ai_addr);
+		NTP_REQUIRE(NULL == hints->ai_canonname);
+		NTP_REQUIRE(NULL == hints->ai_next);
+	}
+
+	idx = get_dnschild_ctx();
+	child_ctx = dnschild_contexts[idx];
+
+	nodesize = strlen(node) + 1;
+	servsize = strlen(service) + 1;
+	req_size = sizeof(*gai_req) + nodesize + servsize;
+
+	gai_req = emalloc_zero(req_size);
+
+	gai_req->octets = req_size;
+	gai_req->dns_idx = idx;
+	now = time(NULL);
+	gai_req->scheduled = now;
+	gai_req->earliest = max(now, child_ctx->next_dns_timeslot);
+	child_ctx->next_dns_timeslot = gai_req->earliest;
+	if (hints != NULL)
+		gai_req->hints = *hints;
+	gai_req->retry = retry;
+	gai_req->callback = callback;
+	gai_req->context = context;
+	gai_req->nodesize = nodesize;
+	gai_req->servsize = servsize;
+
+	memcpy((char *)gai_req + sizeof(*gai_req), node, nodesize);
+	memcpy((char *)gai_req + sizeof(*gai_req) + nodesize, service,
+	       servsize);
+
+	if (queue_blocking_request(
+		BLOCKING_GETADDRINFO,
+		gai_req,
+		req_size, 
+		&getaddrinfo_sometime_complete, 
+		gai_req)) {
+
+		msyslog(LOG_ERR, "unable to queue getaddrinfo request");
+		errno = EFAULT;
+		return -1;
+	}
+
+	return 0;
+}
+
+int
+blocking_getaddrinfo(
+	blocking_child *	c,
+	blocking_pipe_header *	req
+	)
+{
+	blocking_gai_req *	gai_req;
+	dnsworker_ctx *		worker_ctx;
+	blocking_pipe_header *	resp;
+	blocking_gai_resp *	gai_resp;
+	char *			node;
+	char *			service;
+	struct addrinfo *	ai_res;
+	struct addrinfo *	ai;
+	struct addrinfo *	serialized_ai;
+	size_t			canons_octets;
+	size_t			this_octets;
+	size_t			resp_octets;
+	char *			cp;
+	time_t			time_now;
+
+	gai_req = (void *)((char *)req + sizeof(*req));
+	node = (char *)gai_req + sizeof(*gai_req);
+	service = node + gai_req->nodesize;
+
+	worker_ctx = get_worker_context(c, gai_req->dns_idx);
+	scheduled_sleep(gai_req->scheduled, gai_req->earliest,
+			worker_ctx);
+	reload_resolv_conf(worker_ctx);
+
+	/*
+	 * Take a shot at the final size, better to overestimate
+	 * at first and then realloc to a smaller size.
+	 */
+
+	resp_octets = sizeof(*resp) + sizeof(*gai_resp) +
+		      16 * (sizeof(struct addrinfo) +
+			    sizeof(sockaddr_u)) +
+		      256;
+	resp = emalloc_zero(resp_octets);
+	gai_resp = (void *)(resp + 1);
+
+	TRACE(2, ("blocking_getaddrinfo given node %s serv %s fam %d flags %x\n", 
+		  node, service, gai_req->hints.ai_family,
+		  gai_req->hints.ai_flags));
+#ifdef DEBUG
+	if (debug >= 2)
+		fflush(stdout);
+#endif	
+	ai_res = NULL;
+	gai_resp->retcode = getaddrinfo(node, service, &gai_req->hints,
+					&ai_res);
+	gai_resp->retry = gai_req->retry;
+#ifdef EAI_SYSTEM
+	if (EAI_SYSTEM == gai_resp->retcode)
+		gai_resp->gai_errno = errno;
+#endif
+	canons_octets = 0;
+
+	if (0 == gai_resp->retcode) {
+		ai = ai_res;
+		while (NULL != ai) {
+			gai_resp->ai_count++;
+			if (ai->ai_canonname)
+				canons_octets += strlen(ai->ai_canonname) + 1;
+			ai = ai->ai_next;
+		}
+		/*
+		 * If this query succeeded only after retrying, DNS may have
+		 * just become responsive.  Ignore previously-scheduled
+		 * retry sleeps once for each pending request, similar to
+		 * the way scheduled_sleep() does when its worker_sleep()
+		 * is interrupted.
+		 */
+		if (gai_resp->retry > INITIAL_DNS_RETRY) {
+			time_now = time(NULL);
+			worker_ctx->ignore_scheduled_before = time_now;
+			TRACE(1, ("DNS success after retry, ignoring sleeps scheduled before now (%s)\n",
+				  humantime(time_now)));
+		}
+	}
+
+	/*
+	 * Our response consists of a header, followed by ai_count 
+	 * addrinfo structs followed by ai_count sockaddr_storage 
+	 * structs followed by the canonical names.
+	 */
+	gai_resp->octets = sizeof(*gai_resp)
+			    + gai_resp->ai_count
+				* (sizeof(gai_req->hints)
+				   + sizeof(sockaddr_u))
+			    + canons_octets;
+
+	resp_octets = sizeof(*resp) + gai_resp->octets;
+	resp = erealloc(resp, resp_octets);
+	gai_resp = (void *)(resp + 1);
+
+	/* cp serves as our current pointer while serializing */
+	cp = (void *)(gai_resp + 1);
+	canons_octets = 0;
+
+	if (0 == gai_resp->retcode) {
+		ai = ai_res;
+		while (NULL != ai) {
+			memcpy(cp, ai, sizeof(*ai));
+			serialized_ai = (void *)cp;
+			cp += sizeof(*ai);
+
+			/* transform ai_canonname into offset */
+			if (NULL != serialized_ai->ai_canonname) {
+				serialized_ai->ai_canonname = (char *)canons_octets;
+				canons_octets += strlen(ai->ai_canonname) + 1;
+			}
+			
+			/* leave fixup of ai_addr pointer for receiver */
+
+			ai = ai->ai_next;
+		}
+
+		ai = ai_res;
+		while (NULL != ai) {
+			NTP_INSIST(ai->ai_addrlen <= sizeof(sockaddr_u));
+			memcpy(cp, ai->ai_addr, ai->ai_addrlen);
+			cp += sizeof(sockaddr_u);
+
+			ai = ai->ai_next;
+		}
+
+		ai = ai_res;
+		while (NULL != ai) {
+			if (NULL != ai->ai_canonname) {
+				this_octets = strlen(ai->ai_canonname) + 1;
+				memcpy(cp, ai->ai_canonname, this_octets);
+				cp += this_octets;
+			}
+
+			ai = ai->ai_next;
+		}
+		freeaddrinfo(ai_res);
+	}
+
+	/*
+	 * make sure our walk and earlier calc match
+	 */
+	DEBUG_INSIST((size_t)(cp - (char *)resp) == resp_octets);
+
+	if (queue_blocking_response(c, resp, resp_octets, req)) {
+		msyslog(LOG_ERR, "blocking_getaddrinfo can not queue response");
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static void
+getaddrinfo_sometime_complete(
+	blocking_work_req	rtype,
+	void *			context,
+	size_t			respsize,
+	void *			resp
+	)
+{
+	blocking_gai_req *	gai_req;
+	blocking_gai_resp *	gai_resp;
+	dnschild_ctx *		child_ctx;
+	struct addrinfo *	ai;
+	struct addrinfo *	next_ai;
+	sockaddr_u *		psau;
+	char *			node;
+	char *			service;
+	char *			canon_start;
+	time_t			time_now;
+	int			again;
+	int			af;
+	const char *		fam_spec;
+	int			i;
+
+	gai_req = context;
+	gai_resp = resp;
+
+	DEBUG_REQUIRE(BLOCKING_GETADDRINFO == rtype);
+	DEBUG_REQUIRE(respsize == gai_resp->octets);
+
+	node = (char *)gai_req + sizeof(*gai_req);
+	service = node + gai_req->nodesize;
+
+	child_ctx = dnschild_contexts[gai_req->dns_idx];
+
+	if (0 == gai_resp->retcode) {
+		/*
+		 * If this query succeeded only after retrying, DNS may have
+		 * just become responsive.
+		 */
+		if (gai_resp->retry > INITIAL_DNS_RETRY) {
+			time_now = time(NULL);
+			child_ctx->next_dns_timeslot = time_now;
+			TRACE(1, ("DNS success after retry, %u next_dns_timeslot reset (%s)\n",
+				  gai_req->dns_idx, humantime(time_now)));
+		}
+	} else {
+		again = should_retry_dns(gai_resp->retcode,
+					 gai_resp->gai_errno);
+		/*
+		 * exponential backoff of DNS retries to 64s
+		 */
+		if (gai_req->retry > 0 && again) {
+			/* log the first retry only */
+			if (INITIAL_DNS_RETRY == gai_req->retry)
+				NLOG(NLOG_SYSINFO) {
+					af = gai_req->hints.ai_family;
+					fam_spec = (AF_INET6 == af)
+						       ? " (AAAA)"
+						       : (AF_INET == af)
+							     ? " (A)"
+							     : "";
+#ifdef EAI_SYSTEM
+					if (EAI_SYSTEM == gai_resp->retcode) {
+						errno = gai_resp->gai_errno;
+						msyslog(LOG_INFO,
+							"retrying DNS %s%s: EAI_SYSTEM %d: %m",
+							node, fam_spec,
+							gai_resp->gai_errno);
+					} else
+#endif
+						msyslog(LOG_INFO,
+							"retrying DNS %s%s: %s (%d)",
+							node, fam_spec,
+							gai_strerror(gai_resp->retcode),
+							gai_resp->retcode);
+				}
+			manage_dns_retry_interval(&gai_req->scheduled,
+			    &gai_req->earliest, &gai_req->retry,
+			    &child_ctx->next_dns_timeslot);
+			if (!queue_blocking_request(
+					BLOCKING_GETADDRINFO,
+					gai_req,
+					gai_req->octets,
+					&getaddrinfo_sometime_complete,
+					gai_req))
+				return;
+			else
+				msyslog(LOG_ERR,
+					"unable to retry hostname %s",
+					node);
+		}
+	}
+
+	/*
+	 * fixup pointers in returned addrinfo array
+	 */
+	ai = (void *)((char *)gai_resp + sizeof(*gai_resp));
+	next_ai = NULL;
+	for (i = gai_resp->ai_count - 1; i >= 0; i--) {
+		ai[i].ai_next = next_ai;
+		next_ai = &ai[i];
+	}
+
+	psau = (void *)((char *)ai + gai_resp->ai_count * sizeof(*ai));
+	canon_start = (char *)psau + gai_resp->ai_count * sizeof(*psau);
+
+	for (i = 0; i < gai_resp->ai_count; i++) {
+		if (NULL != ai[i].ai_addr)
+			ai[i].ai_addr = &psau->sa;
+		psau++;
+		if (NULL != ai[i].ai_canonname)
+			ai[i].ai_canonname += (size_t)canon_start;
+	}
+
+	NTP_ENSURE((char *)psau == canon_start);
+
+	if (!gai_resp->ai_count)
+		ai = NULL;
+	
+	(*gai_req->callback)(gai_resp->retcode, gai_resp->gai_errno,
+			     gai_req->context, node, service, 
+			     &gai_req->hints, ai);
+
+	free(gai_req);
+	/* gai_resp is part of block freed by process_blocking_resp() */
+}
+
+
+#ifdef TEST_BLOCKING_WORKER
+void gai_test_callback(int rescode, int gai_errno, void *context, const char *name, const char *service, const struct addrinfo *hints, const struct addrinfo *ai_res)
+{
+	sockaddr_u addr;
+
+	if (rescode) {
+		TRACE(1, ("gai_test_callback context %p error rescode %d %s serv %s\n",
+			  context, rescode, name, service));
+		return;
+	}
+	while (!rescode && NULL != ai_res) {
+		ZERO_SOCK(&addr);
+		memcpy(&addr, ai_res->ai_addr, ai_res->ai_addrlen);
+		TRACE(1, ("ctx %p fam %d addr %s canon '%s' type %s at %p ai_addr %p ai_next %p\n", 
+			  context,
+			  AF(&addr),
+			  stoa(&addr), 
+			  (ai_res->ai_canonname)
+			      ? ai_res->ai_canonname
+			      : "",
+			  (SOCK_DGRAM == ai_res->ai_socktype) 
+			      ? "DGRAM" 
+			      : (SOCK_STREAM == ai_res->ai_socktype) 
+				    ? "STREAM" 
+				    : "(other)",
+			  ai_res,
+			  ai_res->ai_addr,
+			  ai_res->ai_next));
+
+		getnameinfo_sometime((sockaddr_u *)ai_res->ai_addr, 128, 32, 0, gni_test_callback, context);
+
+		ai_res = ai_res->ai_next;
+	}
+}
+#endif	/* TEST_BLOCKING_WORKER */
+
+
+int
+getnameinfo_sometime(
+	sockaddr_u *		psau,
+	size_t			hostoctets,
+	size_t			servoctets,
+	int			flags,
+	gni_sometime_callback	callback,
+	void *			context
+	)
+{
+	blocking_gni_req *	gni_req;
+	u_int			idx;
+	dnschild_ctx *		child_ctx;
+	time_t			time_now;
+	
+	NTP_REQUIRE(hostoctets);
+	NTP_REQUIRE(hostoctets + servoctets < 1024);
+
+	idx = get_dnschild_ctx();
+	child_ctx = dnschild_contexts[idx];
+
+	gni_req = emalloc_zero(sizeof(*gni_req));
+
+	gni_req->octets = sizeof(*gni_req);
+	gni_req->dns_idx = idx;
+	time_now = time(NULL);
+	gni_req->scheduled = time_now;
+	gni_req->earliest = max(time_now, child_ctx->next_dns_timeslot);
+	child_ctx->next_dns_timeslot = gni_req->earliest;
+	memcpy(&gni_req->socku, psau, SOCKLEN(psau));
+	gni_req->hostoctets = hostoctets;
+	gni_req->servoctets = servoctets;
+	gni_req->flags = flags;
+	gni_req->retry = INITIAL_DNS_RETRY;
+	gni_req->callback = callback;
+	gni_req->context = context;
+
+	if (queue_blocking_request(
+		BLOCKING_GETNAMEINFO,
+		gni_req,
+		sizeof(*gni_req), 
+		&getnameinfo_sometime_complete, 
+		gni_req)) {
+
+		msyslog(LOG_ERR, "unable to queue getnameinfo request");
+		errno = EFAULT;
+		return -1;
+	}
+
+	return 0;
+}
+
+
+int
+blocking_getnameinfo(
+	blocking_child *	c,
+	blocking_pipe_header *	req
+	)
+{
+	blocking_gni_req *	gni_req;
+	dnsworker_ctx *		worker_ctx;
+	blocking_pipe_header *	resp;
+	blocking_gni_resp *	gni_resp;
+	size_t			octets;
+	size_t			resp_octets;
+	char *			host;
+	char *			service;
+	char *			cp;
+	int			rc;
+	time_t			time_now;
+
+	gni_req = (void *)((char *)req + sizeof(*req));
+
+	octets = gni_req->hostoctets + gni_req->servoctets;
+
+	/*
+	 * Some alloca() implementations are fragile regarding
+	 * large allocations.  We only need room for the host
+	 * and service names.
+	 */
+	NTP_REQUIRE(octets < 1024);
+
+#ifndef HAVE_ALLOCA
+	host = emalloc(octets);
+#else
+	host = alloca(octets);
+	if (NULL == host) {
+		msyslog(LOG_ERR,
+			"blocking_getnameinfo unable to allocate %lu octets on stack",
+			(u_long)octets);
+		exit(1);
+	}
+#endif
+	service = host + gni_req->hostoctets;
+
+	worker_ctx = get_worker_context(c, gni_req->dns_idx);
+	scheduled_sleep(gni_req->scheduled, gni_req->earliest,
+			worker_ctx);
+	reload_resolv_conf(worker_ctx);
+
+	/*
+	 * Take a shot at the final size, better to overestimate
+	 * then realloc to a smaller size.
+	 */
+
+	resp_octets = sizeof(*resp) + sizeof(*gni_resp) + octets;
+	resp = emalloc_zero(resp_octets);
+	gni_resp = (void *)((char *)resp + sizeof(*resp));
+
+	TRACE(2, ("blocking_getnameinfo given addr %s flags 0x%x hostlen %lu servlen %lu\n",
+		  stoa(&gni_req->socku), gni_req->flags,
+		  (u_long)gni_req->hostoctets, (u_long)gni_req->servoctets));
+	
+	gni_resp->retcode = getnameinfo(&gni_req->socku.sa,
+					SOCKLEN(&gni_req->socku),
+					host,
+					gni_req->hostoctets,
+					service,
+					gni_req->servoctets,
+					gni_req->flags);
+	gni_resp->retry = gni_req->retry;
+#ifdef EAI_SYSTEM
+	if (EAI_SYSTEM == gni_resp->retcode)
+		gni_resp->gni_errno = errno;
+#endif
+
+	if (0 != gni_resp->retcode) {
+		gni_resp->hostoctets = 0;
+		gni_resp->servoctets = 0;
+	} else {
+		gni_resp->hostoctets = strlen(host) + 1;
+		gni_resp->servoctets = strlen(service) + 1;
+		/*
+		 * If this query succeeded only after retrying, DNS may have
+		 * just become responsive.  Ignore previously-scheduled
+		 * retry sleeps once for each pending request, similar to
+		 * the way scheduled_sleep() does when its worker_sleep()
+		 * is interrupted.
+		 */
+		if (gni_req->retry > INITIAL_DNS_RETRY) {
+			time_now = time(NULL);
+			worker_ctx->ignore_scheduled_before = time_now;
+			TRACE(1, ("DNS success after retrying, ignoring sleeps scheduled before now (%s)\n",
+				humantime(time_now)));
+		}
+	}
+	octets = gni_resp->hostoctets + gni_resp->servoctets;
+	/*
+	 * Our response consists of a header, followed by the host and
+	 * service strings, each null-terminated.
+	 */
+	resp_octets = sizeof(*resp) + sizeof(*gni_resp) + octets;
+
+	resp = erealloc(resp, resp_octets);
+	gni_resp = (void *)(resp + 1);
+
+	gni_resp->octets = sizeof(*gni_resp) + octets;
+
+	/* cp serves as our current pointer while serializing */
+	cp = (void *)(gni_resp + 1);
+
+	if (0 == gni_resp->retcode) {
+		memcpy(cp, host, gni_resp->hostoctets);
+		cp += gni_resp->hostoctets;
+		memcpy(cp, service, gni_resp->servoctets);
+		cp += gni_resp->servoctets;
+	}
+
+	NTP_INSIST((size_t)(cp - (char *)resp) == resp_octets);
+	NTP_INSIST(resp_octets - sizeof(*resp) == gni_resp->octets);
+
+	rc = queue_blocking_response(c, resp, resp_octets, req);
+	if (rc)
+		msyslog(LOG_ERR, "blocking_getnameinfo unable to queue response");
+#ifndef HAVE_ALLOCA
+	free(host);
+#endif
+	return rc;
+}
+
+
+static void
+getnameinfo_sometime_complete(
+	blocking_work_req	rtype,
+	void *			context,
+	size_t			respsize,
+	void *			resp
+	)
+{
+	blocking_gni_req *	gni_req;
+	blocking_gni_resp *	gni_resp;
+	dnschild_ctx *		child_ctx;
+	char *			host;
+	char *			service;
+	time_t			time_now;
+	int			again;
+
+	gni_req = context;
+	gni_resp = resp;
+
+	DEBUG_REQUIRE(BLOCKING_GETNAMEINFO == rtype);
+	DEBUG_REQUIRE(respsize == gni_resp->octets);
+
+	child_ctx = dnschild_contexts[gni_req->dns_idx];
+
+	if (0 == gni_resp->retcode) {
+		/*
+		 * If this query succeeded only after retrying, DNS may have
+		 * just become responsive.
+		 */
+		if (gni_resp->retry > INITIAL_DNS_RETRY) {
+			time_now = time(NULL);
+			child_ctx->next_dns_timeslot = time_now;
+			TRACE(1, ("DNS success after retry, %u next_dns_timeslot reset (%s)\n",
+				  gni_req->dns_idx, humantime(time_now)));
+		}
+	} else {
+		again = should_retry_dns(gni_resp->retcode, gni_resp->gni_errno);
+		/*
+		 * exponential backoff of DNS retries to 64s
+		 */
+		if (gni_req->retry > 0)
+			manage_dns_retry_interval(&gni_req->scheduled,
+			    &gni_req->earliest, &gni_req->retry,
+			    &child_ctx->next_dns_timeslot);
+
+		if (gni_req->retry > 0 && again) {
+			if (!queue_blocking_request(
+				BLOCKING_GETNAMEINFO,
+				gni_req,
+				gni_req->octets, 
+				&getnameinfo_sometime_complete, 
+				gni_req))
+				return;
+
+			msyslog(LOG_ERR, "unable to retry reverse lookup of %s", stoa(&gni_req->socku));
+		}
+	}
+
+	if (!gni_resp->hostoctets) {
+		host = NULL;
+		service = NULL;
+	} else {
+		host = (char *)gni_resp + sizeof(*gni_resp);
+		service = (gni_resp->servoctets) 
+			      ? host + gni_resp->hostoctets
+			      : NULL;
+	}
+
+	(*gni_req->callback)(gni_resp->retcode, gni_resp->gni_errno,
+			     &gni_req->socku, gni_req->flags, host,
+			     service, gni_req->context);
+
+	free(gni_req);
+	/* gni_resp is part of block freed by process_blocking_resp() */
+}
+
+
+#ifdef TEST_BLOCKING_WORKER
+void gni_test_callback(int rescode, int gni_errno, sockaddr_u *psau, int flags, const char *host, const char *service, void *context)
+{
+	if (!rescode)
+		TRACE(1, ("gni_test_callback got host '%s' serv '%s' for addr %s context %p\n", 
+			  host, service, stoa(psau), context));
+	else
+		TRACE(1, ("gni_test_callback context %p rescode %d gni_errno %d flags 0x%x addr %s\n",
+			  context, rescode, gni_errno, flags, stoa(psau)));
+}
+#endif	/* TEST_BLOCKING_WORKER */
+
+
+#ifdef HAVE_RES_INIT
+static void
+reload_resolv_conf(
+	dnsworker_ctx *	worker_ctx
+	)
+{
+	time_t	time_now;
+
+	/*
+	 * This is ad-hoc.  Reload /etc/resolv.conf once per minute
+	 * to pick up on changes from the DHCP client.  [Bug 1226]
+	 * When using threads for the workers, this needs to happen
+	 * only once per minute process-wide.
+	 */
+	time_now = time(NULL);
+# ifdef WORK_THREAD
+	worker_ctx->next_res_init = next_res_init;
+# endif
+	if (worker_ctx->next_res_init <= time_now) {
+		if (worker_ctx->next_res_init != 0)
+			res_init();
+		worker_ctx->next_res_init = time_now + 60;
+# ifdef WORK_THREAD
+		next_res_init = worker_ctx->next_res_init;
+# endif
+	}
+}
+#endif	/* HAVE_RES_INIT */
+
+
+static u_int
+reserve_dnschild_ctx(void)
+{
+	const size_t	ps = sizeof(dnschild_contexts[0]);
+	const size_t	cs = sizeof(*dnschild_contexts[0]);
+	u_int		c;
+	u_int		new_alloc;
+	size_t		octets;
+	size_t		new_octets;
+
+	c = 0;
+	while (TRUE) {
+		for ( ; c < dnschild_contexts_alloc; c++) {
+			if (NULL == dnschild_contexts[c]) {
+				dnschild_contexts[c] = emalloc_zero(cs);
+
+				return c;
+			}
+		}
+		new_alloc = dnschild_contexts_alloc + 20;
+		new_octets = new_alloc * ps;
+		octets = dnschild_contexts_alloc * ps;
+		dnschild_contexts = erealloc_zero(dnschild_contexts,
+						  new_octets, octets);
+		dnschild_contexts_alloc = new_alloc;
+	}
+}
+
+
+static u_int
+get_dnschild_ctx(void)
+{
+	static u_int	shared_ctx = UINT_MAX;
+
+	if (worker_per_query)
+		return reserve_dnschild_ctx();
+
+	if (UINT_MAX == shared_ctx)
+		shared_ctx = reserve_dnschild_ctx();
+
+	return shared_ctx;
+}
+
+
+static void
+alloc_dnsworker_context(
+	u_int idx
+	)
+{
+	const size_t worker_context_sz = sizeof(*dnsworker_contexts[0]);
+
+	REQUIRE(NULL == dnsworker_contexts[idx]);
+	dnsworker_contexts[idx] = emalloc_zero(worker_context_sz);
+}
+
+
+static dnsworker_ctx *
+get_worker_context(
+	blocking_child *	c,
+	u_int			idx
+	)
+{
+	static size_t	ps = sizeof(dnsworker_contexts[0]);
+	u_int	min_new_alloc;
+	u_int	new_alloc;
+	size_t	octets;
+	size_t	new_octets;
+
+	if (dnsworker_contexts_alloc <= idx) {
+		min_new_alloc = 1 + idx;
+		/* round new_alloc up to nearest multiple of 4 */
+		new_alloc = (min_new_alloc + 4) & ~(4 - 1);
+		new_octets = new_alloc * ps;
+		octets = dnsworker_contexts_alloc * ps;
+		dnsworker_contexts = erealloc_zero(dnsworker_contexts,
+						   new_octets, octets);
+		dnsworker_contexts_alloc = new_alloc;
+	}
+
+	if (NULL == dnsworker_contexts[idx])
+		alloc_dnsworker_context(idx);
+	ZERO(*dnsworker_contexts[idx]);
+	dnsworker_contexts[idx]->c = c;
+
+	return dnsworker_contexts[idx];
+}
+
+
+static void
+scheduled_sleep(
+	time_t		scheduled,
+	time_t		earliest,
+	dnsworker_ctx *	worker_ctx
+	)
+{
+	time_t now;
+
+	if (scheduled < worker_ctx->ignore_scheduled_before) {
+		TRACE(1, ("ignoring sleep until %s scheduled at %s (before %s)\n",
+			  humantime(earliest), humantime(scheduled),
+			  humantime(worker_ctx->ignore_scheduled_before)));
+		return;
+	}
+
+	now = time(NULL);
+
+	if (now < earliest) {
+		TRACE(1, ("sleep until %s scheduled at %s (>= %s)\n",
+			  humantime(earliest), humantime(scheduled),
+			  humantime(worker_ctx->ignore_scheduled_before)));
+		if (-1 == worker_sleep(worker_ctx->c, earliest - now)) {
+			/* our sleep was interrupted */
+			now = time(NULL);
+			worker_ctx->ignore_scheduled_before = now;
+#ifdef HAVE_RES_INIT
+			worker_ctx->next_res_init = now + 60;
+			next_res_init = worker_ctx->next_res_init;
+			res_init();
+#endif
+			TRACE(1, ("sleep interrupted by daemon, ignoring sleeps scheduled before now (%s)\n",
+				  humantime(worker_ctx->ignore_scheduled_before)));
+		}
+	}
+}
+
+
+/*
+ * manage_dns_retry_interval is a helper used by
+ * getaddrinfo_sometime_complete and getnameinfo_sometime_complete
+ * to calculate the new retry interval and schedule the next query.
+ */
+static void
+manage_dns_retry_interval(
+	time_t *	pscheduled,
+	time_t *	pwhen,
+	int *		pretry,
+	time_t *	pnext_timeslot
+	)
+{
+	time_t	now;
+	time_t	when;
+	int	retry;
+		
+	now = time(NULL);
+	retry = *pretry;
+	when = max(now + retry, *pnext_timeslot);
+	*pnext_timeslot = when;
+	retry = min(64, retry << 1);
+
+	*pscheduled = now;
+	*pwhen = when;
+	*pretry = retry;
+}
+
+/*
+ * should_retry_dns is a helper used by getaddrinfo_sometime_complete
+ * and getnameinfo_sometime_complete which implements ntpd's DNS retry
+ * policy.
+ */
+static int
+should_retry_dns(
+	int	rescode,
+	int	res_errno
+	)
+{
+	static int	eai_again_seen;
+	int		again;
+#if defined (EAI_SYSTEM) && defined(DEBUG)
+	char		msg[256];
+#endif
+
+	/*
+	 * If the resolver failed, see if the failure is
+	 * temporary. If so, return success.
+	 */
+	again = 0;
+
+	switch (rescode) {
+
+	case EAI_FAIL:
+		again = 1;
+		break;
+
+	case EAI_AGAIN:
+		again = 1;
+		eai_again_seen = 1;		/* [Bug 1178] */
+		break;
+
+	case EAI_NONAME:
+#if defined(EAI_NODATA) && (EAI_NODATA != EAI_NONAME)
+	case EAI_NODATA:
+#endif
+		again = !eai_again_seen;	/* [Bug 1178] */
+		break;
+
+#ifdef EAI_SYSTEM
+	case EAI_SYSTEM:
+		/* 
+		 * EAI_SYSTEM means the real error is in errno.  We should be more
+		 * discriminating about which errno values require retrying, but
+		 * this matches existing behavior.
+		 */
+		again = 1;
+# ifdef DEBUG
+		errno_to_str(res_errno, msg, sizeof(msg));
+		TRACE(1, ("intres: EAI_SYSTEM errno %d (%s) means try again, right?\n",
+			  res_errno, msg));
+# endif
+		break;
+#endif
+	}
+
+	TRACE(2, ("intres: resolver returned: %s (%d), %sretrying\n",
+		  gai_strerror(rescode), rescode, again ? "" : "not "));
+
+	return again;
+}
+
+#else	/* !WORKER follows */
+int ntp_intres_nonempty_compilation_unit;
+#endif
diff --git a/libntp/ntp_libopts.c b/libntp/ntp_libopts.c
new file mode 100644
index 0000000..c504f8b
--- /dev/null
+++ b/libntp/ntp_libopts.c
@@ -0,0 +1,58 @@
+/*
+ * ntp_libopts.c
+ *
+ * Common code interfacing with Autogen's libopts command-line option
+ * processing.
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stddef.h>
+#include "ntp_libopts.h"
+#include "ntp_stdlib.h"
+
+extern const char *Version;	/* version.c for each program */
+
+
+/*
+ * ntpOptionProcess() was a clone of libopts' optionProcess which
+ * overrode the --version output, appending detail from version.c
+ * which was not available at Autogen time.  This is now done via
+ * AutoOpts' version-proc = override in copyright.def, so this
+ * routine is a straightforward wrapper of optionProcess().
+ */
+int
+ntpOptionProcess(
+	tOptions *	pOpts,
+	int		argc,
+	char **		argv
+	)
+{
+	return optionProcess(pOpts, argc, argv);
+}
+
+
+/*
+ * ntpOptionPrintVersion() replaces the stock optionPrintVersion() via
+ * version-proc = ntpOptionPrintVersion; in copyright.def.  It differs
+ * from the stock function by displaying the complete version string,
+ * including compile time which was unknown when Autogen ran.
+ *
+ * Like optionPrintVersion() this function must exit(0) rather than
+ * return.
+ */
+void
+ntpOptionPrintVersion(
+	tOptions *	pOpts,
+	tOptDesc *	pOD
+	)
+{
+	UNUSED_ARG(pOpts);
+	UNUSED_ARG(pOD);
+
+	printf("%s\n", Version);
+	fflush(stdout);
+	exit(EXIT_SUCCESS);
+}
diff --git a/libntp/ntp_lineedit.c b/libntp/ntp_lineedit.c
new file mode 100644
index 0000000..c5aad31
--- /dev/null
+++ b/libntp/ntp_lineedit.c
@@ -0,0 +1,246 @@
+/*
+ * ntp_lineedit.c - generic interface to various line editing libs
+ */
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <errno.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#if defined(HAVE_READLINE_HISTORY) &&		\
+    (!defined(HAVE_READLINE_HISTORY_H) ||	\
+     !defined(HAVE_READLINE_READLINE_H))
+# undef HAVE_READLINE_HISTORY
+#endif
+#if defined(HAVE_READLINE_HISTORY)
+# include <readline/readline.h>
+# include <readline/history.h>
+# define LE_READLINE
+#elif defined(HAVE_HISTEDIT_H)
+# include <histedit.h>
+# define LE_EDITLINE
+#else
+# define LE_NONE
+#endif
+
+#include "ntp.h"
+#include "ntp_stdlib.h"
+#include "ntp_lineedit.h"
+
+#define MAXEDITLINE	512
+
+/*
+ * external references
+ */
+
+extern char *	progname;
+
+/*
+ * globals, private prototypes
+ */
+
+static int	ntp_readline_initted;
+static char *	lineedit_prompt;
+
+
+#ifdef LE_EDITLINE
+# ifndef H_SETSIZE
+#  define H_SETSIZE H_EVENT
+# endif
+static EditLine *	ntp_el;
+static History *	ntp_hist;
+static HistEvent	hev;
+
+char *	ntp_prompt_callback(EditLine *);
+#endif	/* LE_EDITLINE */
+
+
+/*
+ * ntp_readline_init - setup, set or reset prompt string
+ */
+int
+ntp_readline_init(
+	const char *	prompt
+	)
+{
+	int	success;
+
+	success = 1;
+
+	if (prompt) {
+		if (lineedit_prompt) 
+			free(lineedit_prompt);
+		lineedit_prompt = estrdup(prompt);
+	}
+
+#ifdef LE_EDITLINE
+	if (NULL == ntp_el) {
+
+# if 4 == EL_INIT_ARGS
+		ntp_el = el_init(progname, stdin, stdout, stderr);
+# else
+		ntp_el = el_init(progname, stdin, stdout);
+# endif
+		if (ntp_el) {
+
+			el_set(ntp_el, EL_PROMPT, ntp_prompt_callback);
+			el_set(ntp_el, EL_EDITOR, "emacs");
+
+			ntp_hist = history_init();
+
+			if (NULL == ntp_hist) {
+
+				mfprintf(stderr, "history_init(): %m\n");
+				fflush(stderr);
+
+				el_end(ntp_el);
+				ntp_el = NULL;
+
+				success = 0;
+
+			} else {
+				ZERO(hev);
+#ifdef H_SETSIZE
+				history(ntp_hist, &hev, H_SETSIZE, 128);
+#endif
+				el_set(ntp_el, EL_HIST, history,
+				       ntp_hist);
+				/* use any .editrc */
+				el_source(ntp_el, NULL);
+			}
+		} else
+			success = 0;
+	}
+#endif	/* LE_EDITLINE */
+
+	ntp_readline_initted = success;
+
+	return success;
+}
+
+
+/*
+ * ntp_readline_uninit - release resources
+ */
+void
+ntp_readline_uninit(
+	void
+	)
+{
+#ifdef LE_EDITLINE
+	if (ntp_el) {
+		el_end(ntp_el);
+		ntp_el = NULL;
+
+		history_end(ntp_hist);
+		ntp_hist = NULL;
+	}
+#endif	/* LE_EDITLINE */
+
+	if (lineedit_prompt) {
+		free(lineedit_prompt);
+		lineedit_prompt = NULL;
+	}
+
+	ntp_readline_initted = 0;
+}
+
+
+/*
+ * ntp_readline - read a line with the line editor available
+ *
+ * The string returned must be released with free()
+ */
+
+char *
+ntp_readline(
+	int *	pcount
+	)
+{
+	char *		line;
+#ifdef LE_NONE
+	char		line_buf[MAXEDITLINE];
+#endif
+#ifdef LE_EDITLINE
+	const char *	cline;
+#endif
+
+	if (!ntp_readline_initted)
+		return NULL;
+
+	*pcount = 0;
+
+#ifdef LE_READLINE
+	line = readline(lineedit_prompt ? lineedit_prompt : "");
+	if (NULL != line) {
+		if (*line) {
+			add_history(line);
+			*pcount = strlen(line);
+		} else {
+			free(line);
+			line = NULL;
+		}
+	}
+#endif	/* LE_READLINE */
+
+#ifdef LE_EDITLINE
+	cline = el_gets(ntp_el, pcount);
+
+	if (NULL != cline && *cline) {
+		history(ntp_hist, &hev, H_ENTER, cline);
+		*pcount = strlen(cline);
+		line = estrdup(cline);
+	} else
+		line = NULL;
+#endif	/* LE_EDITLINE */
+
+#ifdef LE_NONE
+					/* stone hammers */
+	if (lineedit_prompt) {
+# ifdef VMS
+			/*
+			 * work around problem mixing
+			 * stdout & stderr
+			 */
+			fputs("", stdout);
+# endif	/* VMS */
+
+		fputs(lineedit_prompt, stderr);
+		fflush(stderr);
+	}
+
+	line = fgets(line_buf, sizeof(line_buf), stdin);
+	if (NULL != line && *line) {
+		*pcount = strlen(line);
+		line = estrdup(line);
+	} else
+		line = NULL;
+
+#endif	/* LE_NONE */
+
+
+	if (!line)			/* EOF */
+		fputs("\n", stderr);
+
+	return line;
+}
+
+
+#ifdef LE_EDITLINE
+/*
+ * ntp_prompt_callback - return prompt string to el_gets()
+ */
+char *
+ntp_prompt_callback(
+	EditLine *el
+	)
+{
+	UNUSED_ARG(el);
+
+	return lineedit_prompt;
+}
+#endif /* LE_EDITLINE */
+
diff --git a/libntp/ntp_random.c b/libntp/ntp_random.c
new file mode 100644
index 0000000..0ada44f
--- /dev/null
+++ b/libntp/ntp_random.c
@@ -0,0 +1,499 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD: src/lib/libc/stdlib/random.c,v 1.4.2.2 1999/09/05 11:16:45 peter Exp $
+ *
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)random.c	8.2 (Berkeley) 5/19/95";
+#endif /* LIBC_SCCS and not lint */
+
+#include "config.h"
+#include <sys/types.h>
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+#include <stdio.h>
+
+#include <l_stdlib.h>
+#include <ntp_random.h>
+#include <ntp_unixtime.h>
+
+/*
+ * random.c:
+ *
+ * An improved random number generation package.  In addition to the standard
+ * rand()/srand() like interface, this package also has a special state info
+ * interface.  The initstate() routine is called with a seed, an array of
+ * bytes, and a count of how many bytes are being passed in; this array is
+ * then initialized to contain information for random number generation with
+ * that much state information.  Good sizes for the amount of state
+ * information are 32, 64, 128, and 256 bytes.  The state can be switched by
+ * calling the setstate() routine with the same array as was initiallized
+ * with initstate().  By default, the package runs with 128 bytes of state
+ * information and generates far better random numbers than a linear
+ * congruential generator.  If the amount of state information is less than
+ * 32 bytes, a simple linear congruential R.N.G. is used.
+ *
+ * Internally, the state information is treated as an array of longs; the
+ * zeroeth element of the array is the type of R.N.G. being used (small
+ * integer); the remainder of the array is the state information for the
+ * R.N.G.  Thus, 32 bytes of state information will give 7 longs worth of
+ * state information, which will allow a degree seven polynomial.  (Note:
+ * the zeroeth word of state information also has some other information
+ * stored in it -- see setstate() for details).
+ *
+ * The random number generation technique is a linear feedback shift register
+ * approach, employing trinomials (since there are fewer terms to sum up that
+ * way).  In this approach, the least significant bit of all the numbers in
+ * the state table will act as a linear feedback shift register, and will
+ * have period 2^deg - 1 (where deg is the degree of the polynomial being
+ * used, assuming that the polynomial is irreducible and primitive).  The
+ * higher order bits will have longer periods, since their values are also
+ * influenced by pseudo-random carries out of the lower bits.  The total
+ * period of the generator is approximately deg*(2**deg - 1); thus doubling
+ * the amount of state information has a vast influence on the period of the
+ * generator.  Note: the deg*(2**deg - 1) is an approximation only good for
+ * large deg, when the period of the shift register is the dominant factor.
+ * With deg equal to seven, the period is actually much longer than the
+ * 7*(2**7 - 1) predicted by this formula.
+ *
+ * Modified 28 December 1994 by Jacob S. Rosenberg.
+ * The following changes have been made:
+ * All references to the type u_int have been changed to unsigned long.
+ * All references to type int have been changed to type long.  Other
+ * cleanups have been made as well.  A warning for both initstate and
+ * setstate has been inserted to the effect that on Sparc platforms
+ * the 'arg_state' variable must be forced to begin on word boundaries.
+ * This can be easily done by casting a long integer array to char *.
+ * The overall logic has been left STRICTLY alone.  This software was
+ * tested on both a VAX and Sun SpacsStation with exactly the same
+ * results.  The new version and the original give IDENTICAL results.
+ * The new version is somewhat faster than the original.  As the
+ * documentation says:  "By default, the package runs with 128 bytes of
+ * state information and generates far better random numbers than a linear
+ * congruential generator.  If the amount of state information is less than
+ * 32 bytes, a simple linear congruential R.N.G. is used."  For a buffer of
+ * 128 bytes, this new version runs about 19 percent faster and for a 16
+ * byte buffer it is about 5 percent faster.
+ */
+
+/*
+ * For each of the currently supported random number generators, we have a
+ * break value on the amount of state information (you need at least this
+ * many bytes of state info to support this random number generator), a degree
+ * for the polynomial (actually a trinomial) that the R.N.G. is based on, and
+ * the separation between the two lower order coefficients of the trinomial.
+ */
+#define	TYPE_0		0		/* linear congruential */
+#define	BREAK_0		8
+#define	DEG_0		0
+#define	SEP_0		0
+
+#define	TYPE_1		1		/* x**7 + x**3 + 1 */
+#define	BREAK_1		32
+#define	DEG_1		7
+#define	SEP_1		3
+
+#define	TYPE_2		2		/* x**15 + x + 1 */
+#define	BREAK_2		64
+#define	DEG_2		15
+#define	SEP_2		1
+
+#define	TYPE_3		3		/* x**31 + x**3 + 1 */
+#define	BREAK_3		128
+#define	DEG_3		31
+#define	SEP_3		3
+
+#define	TYPE_4		4		/* x**63 + x + 1 */
+#define	BREAK_4		256
+#define	DEG_4		63
+#define	SEP_4		1
+
+#define	MAX_TYPES	5		/* max number of types above */
+
+/*
+ * Initially, everything is set up as if from:
+ *
+ *	initstate(1, randtbl, 128);
+ *
+ * Note that this initialization takes advantage of the fact that srandom()
+ * advances the front and rear pointers 10*rand_deg times, and hence the
+ * rear pointer which starts at 0 will also end up at zero; thus the zeroeth
+ * element of the state information, which contains info about the current
+ * position of the rear pointer is just
+ *
+ *	MAX_TYPES * (rptr - state) + TYPE_3 == TYPE_3.
+ */
+
+static unsigned long randtbl[DEG_3 + 1] = {
+	TYPE_3,
+#ifdef  USE_WEAK_SEEDING
+/* Historic implementation compatibility */
+/* The random sequences do not vary much with the seed */
+	0x9a319039, 0x32d9c024, 0x9b663182, 0x5da1f342, 0xde3b81e0, 0xdf0a6fb5,
+	0xf103bc02, 0x48f340fb, 0x7449e56b, 0xbeb1dbb0, 0xab5c5918, 0x946554fd,
+	0x8c2e680f, 0xeb3d799f, 0xb11ee0b7, 0x2d436b86, 0xda672e2a, 0x1588ca88,
+	0xe369735d, 0x904f35f7, 0xd7158fd6, 0x6fa6f051, 0x616e6b96, 0xac94efdc,
+	0x36413f93, 0xc622c298, 0xf5a42ab8, 0x8a88d77b, 0xf5ad9d0e, 0x8999220b,
+	0x27fb47b9,
+#else   /* !USE_WEAK_SEEDING */
+	0x991539b1, 0x16a5bce3, 0x6774a4cd, 0x3e01511e, 0x4e508aaa, 0x61048c05,
+	0xf5500617, 0x846b7115, 0x6a19892c, 0x896a97af, 0xdb48f936, 0x14898454,
+	0x37ffd106, 0xb58bff9c, 0x59e17104, 0xcf918a49, 0x09378c83, 0x52c7a471,
+	0x8d293ea9, 0x1f4fc301, 0xc3db71be, 0x39b44e1c, 0xf8a44ef9, 0x4c8b80b1,
+	0x19edc328, 0x87bf4bdd, 0xc9b240e5, 0xe9ee4b1b, 0x4382aee7, 0x535b6b41,
+	0xf3bec5da
+#endif  /* !USE_WEAK_SEEDING */
+};
+
+/*
+ * fptr and rptr are two pointers into the state info, a front and a rear
+ * pointer.  These two pointers are always rand_sep places aparts, as they
+ * cycle cyclically through the state information.  (Yes, this does mean we
+ * could get away with just one pointer, but the code for random() is more
+ * efficient this way).  The pointers are left positioned as they would be
+ * from the call
+ *
+ *	initstate(1, randtbl, 128);
+ *
+ * (The position of the rear pointer, rptr, is really 0 (as explained above
+ * in the initialization of randtbl) because the state table pointer is set
+ * to point to randtbl[1] (as explained below).
+ */
+static unsigned long *fptr = &randtbl[SEP_3 + 1];
+static unsigned long *rptr = &randtbl[1];
+
+/*
+ * The following things are the pointer to the state information table, the
+ * type of the current generator, the degree of the current polynomial being
+ * used, and the separation between the two pointers.  Note that for efficiency
+ * of random(), we remember the first location of the state information, not
+ * the zeroeth.  Hence it is valid to access state[-1], which is used to
+ * store the type of the R.N.G.  Also, we remember the last location, since
+ * this is more efficient than indexing every time to find the address of
+ * the last element to see if the front and rear pointers have wrapped.
+ */
+static unsigned long *state = &randtbl[1];
+static long rand_type = TYPE_3;
+static long rand_deg = DEG_3;
+static long rand_sep = SEP_3;
+static unsigned long *end_ptr = &randtbl[DEG_3 + 1];
+
+static inline long good_rand (long);
+
+static inline long
+good_rand (
+	register long x
+	)
+{
+#ifdef  USE_WEAK_SEEDING
+/*
+ * Historic implementation compatibility.
+ * The random sequences do not vary much with the seed,
+ * even with overflowing.
+ */
+	return (1103515245 * x + 12345);
+#else   /* !USE_WEAK_SEEDING */
+/*
+ * Compute x = (7^5 * x) mod (2^31 - 1)
+ * wihout overflowing 31 bits:
+ *      (2^31 - 1) = 127773 * (7^5) + 2836
+ * From "Random number generators: good ones are hard to find",
+ * Park and Miller, Communications of the ACM, vol. 31, no. 10,
+ * October 1988, p. 1195.
+ */
+	register long hi, lo;
+
+	hi = x / 127773;
+	lo = x % 127773;
+	x = 16807 * lo - 2836 * hi;
+	if (x <= 0)
+		x += 0x7fffffff;
+	return (x);
+#endif  /* !USE_WEAK_SEEDING */
+}
+
+/*
+ * srandom:
+ *
+ * Initialize the random number generator based on the given seed.  If the
+ * type is the trivial no-state-information type, just remember the seed.
+ * Otherwise, initializes state[] based on the given "seed" via a linear
+ * congruential generator.  Then, the pointers are set to known locations
+ * that are exactly rand_sep places apart.  Lastly, it cycles the state
+ * information a given number of times to get rid of any initial dependencies
+ * introduced by the L.C.R.N.G.  Note that the initialization of randtbl[]
+ * for default usage relies on values produced by this routine.
+ */
+void
+ntp_srandom(
+	unsigned long x
+	)
+{
+	long i;
+
+	if (rand_type == TYPE_0) {
+		state[0] = x;
+	} else {
+		state[0] = x;
+		for (i = 1; i < rand_deg; i++)
+			state[i] = good_rand(state[i - 1]);
+		fptr = &state[rand_sep];
+		rptr = &state[0];
+		for (i = 0; i < 10 * rand_deg; i++)
+			x = ntp_random();
+	}
+
+	/* seed the likely faster (and poorer) rand() as well */
+	srand((u_int)x);
+}
+
+/*
+ * srandomdev:
+ *
+ * Many programs choose the seed value in a totally predictable manner.
+ * This often causes problems.  We seed the generator using the much more
+ * secure urandom(4) interface.  Note that this particular seeding
+ * procedure can generate states which are impossible to reproduce by
+ * calling srandom() with any value, since the succeeding terms in the
+ * state buffer are no longer derived from the LC algorithm applied to
+ * a fixed seed.
+ */
+#ifdef NEED_SRANDOMDEV
+void
+ntp_srandomdev( void )
+{
+	struct timeval tv;
+	unsigned long junk;	/* Purposely used uninitialized */
+
+	GETTIMEOFDAY(&tv, NULL);
+	ntp_srandom(getpid() ^ tv.tv_sec ^ tv.tv_usec ^ junk);
+	return;
+}
+#endif
+
+
+/*
+ * ntp_initstate() and ntp_setstate() are unused in our codebase and
+ * trigger warnings due to casting to a more-strictly-aligned pointer
+ * on alignment-sensitive platforms.  #ifdef them away to save noise,
+ * build time, and binary space, but retain the code in case we find a
+ * use.
+ */
+#ifdef COMPILE_UNUSED_FUNCTIONS
+/*
+ * Array versions of the above information to make code run faster --
+ * relies on fact that TYPE_i == i.
+ */
+#define	MAX_TYPES	5		/* max number of types above */
+
+static long degrees[MAX_TYPES] =	{ DEG_0, DEG_1, DEG_2, DEG_3, DEG_4 };
+static long seps [MAX_TYPES] =	{ SEP_0, SEP_1, SEP_2, SEP_3, SEP_4 };
+
+/*
+ * initstate:
+ *
+ * Initialize the state information in the given array of n bytes for future
+ * random number generation.  Based on the number of bytes we are given, and
+ * the break values for the different R.N.G.'s, we choose the best (largest)
+ * one we can and set things up for it.  srandom() is then called to
+ * initialize the state information.
+ *
+ * Note that on return from srandom(), we set state[-1] to be the type
+ * multiplexed with the current value of the rear pointer; this is so
+ * successive calls to initstate() won't lose this information and will be
+ * able to restart with setstate().
+ *
+ * Note: the first thing we do is save the current state, if any, just like
+ * setstate() so that it doesn't matter when initstate is called.
+ *
+ * Returns a pointer to the old state.
+ *
+ * Note: The Sparc platform requires that arg_state begin on a long
+ * word boundary; otherwise a bus error will occur. Even so, lint will
+ * complain about mis-alignment, but you should disregard these messages.
+ */
+char *
+ntp_initstate(
+	unsigned long seed,		/* seed for R.N.G. */
+	char *arg_state,		/* pointer to state array */
+	long n				/* # bytes of state info */
+	)
+{
+	register char *ostate = (char *)(&state[-1]);
+	register long *long_arg_state = (long *) arg_state;
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	if (n < BREAK_0) {
+		(void)fprintf(stderr,
+		    "random: not enough state (%ld bytes); ignored.\n", n);
+		return(0);
+	}
+	if (n < BREAK_1) {
+		rand_type = TYPE_0;
+		rand_deg = DEG_0;
+		rand_sep = SEP_0;
+	} else if (n < BREAK_2) {
+		rand_type = TYPE_1;
+		rand_deg = DEG_1;
+		rand_sep = SEP_1;
+	} else if (n < BREAK_3) {
+		rand_type = TYPE_2;
+		rand_deg = DEG_2;
+		rand_sep = SEP_2;
+	} else if (n < BREAK_4) {
+		rand_type = TYPE_3;
+		rand_deg = DEG_3;
+		rand_sep = SEP_3;
+	} else {
+		rand_type = TYPE_4;
+		rand_deg = DEG_4;
+		rand_sep = SEP_4;
+	}
+	state = (unsigned long *) (long_arg_state + 1); /* first location */
+	end_ptr = &state[rand_deg];	/* must set end_ptr before srandom */
+	ntp_srandom(seed);
+	if (rand_type == TYPE_0)
+		long_arg_state[0] = rand_type;
+	else
+		long_arg_state[0] = MAX_TYPES * (rptr - state) + rand_type;
+	return(ostate);
+}
+
+/*
+ * setstate:
+ *
+ * Restore the state from the given state array.
+ *
+ * Note: it is important that we also remember the locations of the pointers
+ * in the current state information, and restore the locations of the pointers
+ * from the old state information.  This is done by multiplexing the pointer
+ * location into the zeroeth word of the state information.
+ *
+ * Note that due to the order in which things are done, it is OK to call
+ * setstate() with the same state as the current state.
+ *
+ * Returns a pointer to the old state information.
+ *
+ * Note: The Sparc platform requires that arg_state begin on a long
+ * word boundary; otherwise a bus error will occur. Even so, lint will
+ * complain about mis-alignment, but you should disregard these messages.
+ */
+char *
+ntp_setstate(
+	char *arg_state			/* pointer to state array */
+	)
+{
+	register unsigned long *new_state = (unsigned long *) arg_state;
+	register long type = new_state[0] % MAX_TYPES;
+	register long rear = new_state[0] / MAX_TYPES;
+	char *ostate = (char *)(&state[-1]);
+
+	if (rand_type == TYPE_0)
+		state[-1] = rand_type;
+	else
+		state[-1] = MAX_TYPES * (rptr - state) + rand_type;
+	switch(type) {
+	case TYPE_0:
+	case TYPE_1:
+	case TYPE_2:
+	case TYPE_3:
+	case TYPE_4:
+		rand_type = type;
+		rand_deg = degrees[type];
+		rand_sep = seps[type];
+		break;
+	default:
+		(void)fprintf(stderr,
+		    "random: state info corrupted; not changed.\n");
+	}
+	state = (new_state + 1);
+	if (rand_type != TYPE_0) {
+		rptr = &state[rear];
+		fptr = &state[(rear + rand_sep) % rand_deg];
+	}
+	end_ptr = &state[rand_deg];		/* set end_ptr too */
+	return(ostate);
+}
+#endif	/* COMPILE_UNUSED_FUNCTIONS */
+
+
+/*
+ * random:
+ *
+ * If we are using the trivial TYPE_0 R.N.G., just do the old linear
+ * congruential bit.  Otherwise, we do our fancy trinomial stuff, which is
+ * the same in all the other cases due to all the global variables that have
+ * been set up.  The basic operation is to add the number at the rear pointer
+ * into the one at the front pointer.  Then both pointers are advanced to
+ * the next location cyclically in the table.  The value returned is the sum
+ * generated, reduced to 31 bits by throwing away the "least random" low bit.
+ *
+ * Note: the code takes advantage of the fact that both the front and
+ * rear pointers can't wrap on the same call by not testing the rear
+ * pointer if the front one has wrapped.
+ *
+ * Returns a 31-bit random number.
+ */
+long
+ntp_random( void )
+{
+	register long i;
+	register unsigned long *f, *r;
+
+	if (rand_type == TYPE_0) {
+		i = state[0];
+		state[0] = i = (good_rand(i)) & 0x7fffffff;
+	} else {
+		/*
+		 * Use local variables rather than static variables for speed.
+		 */
+		f = fptr; r = rptr;
+		*f += *r;
+		i = (*f >> 1) & 0x7fffffff;	/* chucking least random bit */
+		if (++f >= end_ptr) {
+			f = state;
+			++r;
+		}
+		else if (++r >= end_ptr) {
+			r = state;
+		}
+
+		fptr = f; rptr = r;
+	}
+	return(i);
+}
diff --git a/libntp/ntp_rfc2553.c b/libntp/ntp_rfc2553.c
new file mode 100644
index 0000000..f267999
--- /dev/null
+++ b/libntp/ntp_rfc2553.c
@@ -0,0 +1,576 @@
+/*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Copyright (c) 1982, 1986, 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ */
+
+/*
+ * Compatability shims with the rfc2553 API to simplify ntp.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <ctype.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#include <isc/net.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#include "ntp_rfc2553.h"
+
+#include "ntpd.h"
+#include "ntp_malloc.h"
+#include "ntp_string.h"
+#include "ntp_debug.h"
+
+
+/*
+ * copy_addrinfo()	- copy a single addrinfo to malloc()'d block.
+ * copy_addrinfo_list() - copy an addrinfo list to malloc()'d block.
+ *
+ * Copies an addrinfo list and its associated data to a contiguous block
+ * of storage from emalloc().  Callback routines invoked via
+ * getaddrinfo_sometime() have access to the resulting addrinfo list
+ * only until they return.  This routine provides an easy way to make a
+ * persistent copy.  Although the list provided to gai_sometime_callback
+ * routines is similarly contiguous, to keep this code usable in any
+ * context where we might want to duplicate an addrinfo list, it does
+ * not require the input list be contiguous.
+ *
+ * The returned list head pointer is passed to free() to release the
+ * entire list.
+ *
+ * In keeping with the rest of the NTP distribution, sockaddr_u is used
+ * in preference to struct sockaddr_storage, which is a member of the
+ * former union and so compatible.
+ *
+ * The rest of ntp_rfc2553.c is conditioned on ISC_PLATFORM_HAVEIPV6
+ * not being defined, copy_addrinfo_*() are exceptions.
+ */
+struct addrinfo * copy_addrinfo_common(const struct addrinfo *, int
+#ifdef EREALLOC_CALLSITE
+								   ,
+				       const char *, int
+#endif
+				       );
+
+
+struct addrinfo *
+copy_addrinfo_impl(
+	const struct addrinfo *	src
+#ifdef EREALLOC_CALLSITE
+				   ,
+	const char *		caller_file,
+	int			caller_line
+#endif
+	)
+{
+	return copy_addrinfo_common(src, TRUE
+#ifdef EREALLOC_CALLSITE
+					      ,
+				    caller_file, caller_line
+#endif
+				    );
+}
+
+
+struct addrinfo *
+copy_addrinfo_list_impl(
+	const struct addrinfo *	src
+#ifdef EREALLOC_CALLSITE
+				   ,
+	const char *		caller_file,
+	int			caller_line
+#endif
+	)
+{
+	return copy_addrinfo_common(src, FALSE
+#ifdef EREALLOC_CALLSITE
+					      ,
+				    caller_file, caller_line
+#endif
+				    );
+}
+
+
+struct addrinfo *
+copy_addrinfo_common(
+	const struct addrinfo *	src,
+	int			just_one
+#ifdef EREALLOC_CALLSITE
+					,
+	const char *		caller_file,
+	int			caller_line
+#endif
+	)
+{
+	const struct addrinfo *	ai_src;
+	const struct addrinfo *	ai_nxt;
+	struct addrinfo *	ai_cpy;
+	struct addrinfo *	dst;
+	sockaddr_u *		psau;
+	char *			pcanon;
+	u_int			elements;
+	size_t			octets;
+	size_t			canons_octets;
+	size_t			str_octets;
+
+	elements = 0;
+	canons_octets = 0;
+
+	for (ai_src = src; NULL != ai_src; ai_src = ai_nxt) {
+		if (just_one)
+			ai_nxt = NULL;
+		else
+			ai_nxt = ai_src->ai_next;
+		++elements;
+		if (NULL != ai_src->ai_canonname)
+			canons_octets += 1 + strlen(ai_src->ai_canonname);
+	}
+
+	octets = elements * (sizeof(*ai_cpy) + sizeof(*psau));
+	octets += canons_octets;
+
+	dst = erealloczsite(NULL, octets, 0, TRUE, caller_file,
+			    caller_line);
+	ai_cpy = dst;
+	psau = (void *)(ai_cpy + elements);
+	pcanon = (void *)(psau + elements);
+
+	for (ai_src = src; NULL != ai_src; ai_src = ai_nxt) {
+		if (just_one)
+			ai_nxt = NULL;
+		else
+			ai_nxt = ai_src->ai_next;
+		*ai_cpy = *ai_src;
+		REQUIRE(ai_src->ai_addrlen <= sizeof(sockaddr_u));
+		memcpy(psau, ai_src->ai_addr, ai_src->ai_addrlen);
+		ai_cpy->ai_addr = &psau->sa;
+		++psau;
+		if (NULL != ai_cpy->ai_canonname) {
+			ai_cpy->ai_canonname = pcanon;
+			str_octets = 1 + strlen(ai_src->ai_canonname);
+			memcpy(pcanon, ai_src->ai_canonname, str_octets);
+			pcanon += str_octets;
+		}
+		if (NULL != ai_cpy->ai_next) {
+			if (just_one)
+				ai_cpy->ai_next = NULL;
+			else
+				ai_cpy->ai_next = ai_cpy + 1;
+		}
+		++ai_cpy;
+	}
+	NTP_ENSURE(pcanon == ((char *)dst + octets));
+
+	return dst;
+}
+
+
+#ifndef ISC_PLATFORM_HAVEIPV6
+
+static char *ai_errlist[] = {
+	"Success",
+	"Address family for hostname not supported",	/* EAI_ADDRFAMILY */
+	"Temporary failure in name resolution",		/* EAI_AGAIN      */
+	"Invalid value for ai_flags",		       	/* EAI_BADFLAGS   */
+	"Non-recoverable failure in name resolution", 	/* EAI_FAIL       */
+	"ai_family not supported",			/* EAI_FAMILY     */
+	"Memory allocation failure", 			/* EAI_MEMORY     */
+	"No address associated with hostname", 		/* EAI_NODATA     */
+	"hostname nor servname provided, or not known",	/* EAI_NONAME     */
+	"servname not supported for ai_socktype",	/* EAI_SERVICE    */
+	"ai_socktype not supported", 			/* EAI_SOCKTYPE   */
+	"System error returned in errno", 		/* EAI_SYSTEM     */
+	"Invalid value for hints",			/* EAI_BADHINTS	  */
+	"Resolved protocol is unknown",			/* EAI_PROTOCOL   */
+	"Unknown error", 				/* EAI_MAX        */
+};
+
+/*
+ * Local declaration
+ */
+int
+DNSlookup_name(
+	const char *name,
+	int ai_family,
+	struct hostent **Addresses
+);
+
+#ifndef SYS_WINNT
+/*
+ * Encapsulate gethostbyname to control the error code
+ */
+int
+DNSlookup_name(
+	const char *name,
+	int ai_family,
+	struct hostent **Addresses
+)
+{
+	*Addresses = gethostbyname(name);
+	return (h_errno);
+}
+#endif
+
+static	int do_nodename (const char *nodename, struct addrinfo *ai,
+    const struct addrinfo *hints);
+
+int
+getaddrinfo (const char *nodename, const char *servname,
+	const struct addrinfo *hints, struct addrinfo **res)
+{
+	int rval;
+	struct servent *sp;
+	struct addrinfo *ai = NULL;
+	int port;
+	const char *proto = NULL;
+	int family, socktype, flags, protocol;
+
+
+	/*
+	 * If no name is provide just return an error
+	 */
+	if (nodename == NULL && servname == NULL)
+		return (EAI_NONAME);
+	
+	ai = calloc(sizeof(struct addrinfo), 1);
+	if (ai == NULL)
+		return (EAI_MEMORY);
+
+	/*
+	 * Copy default values from hints, if available
+	 */
+	if (hints != NULL) {
+		ai->ai_flags = hints->ai_flags;
+		ai->ai_family = hints->ai_family;
+		ai->ai_socktype = hints->ai_socktype;
+		ai->ai_protocol = hints->ai_protocol;
+
+		family = hints->ai_family;
+		socktype = hints->ai_socktype;
+		protocol = hints->ai_protocol;
+		flags = hints->ai_flags;
+
+		switch (family) {
+		case AF_UNSPEC:
+			switch (hints->ai_socktype) {
+			case SOCK_STREAM:
+				proto = "tcp";
+				break;
+			case SOCK_DGRAM:
+				proto = "udp";
+				break;
+			}
+			break;
+		case AF_INET:
+		case AF_INET6:
+			switch (hints->ai_socktype) {
+			case 0:
+				break;
+			case SOCK_STREAM:
+				proto = "tcp";
+				break;
+			case SOCK_DGRAM:
+				proto = "udp";
+				break;
+			case SOCK_RAW:
+				break;
+			default:
+				return (EAI_SOCKTYPE);
+			}
+			break;
+#ifdef	AF_LOCAL
+		case AF_LOCAL:
+			switch (hints->ai_socktype) {
+			case 0:
+				break;
+			case SOCK_STREAM:
+				break;
+			case SOCK_DGRAM:
+				break;
+			default:
+				return (EAI_SOCKTYPE);
+			}
+			break;
+#endif
+		default:
+			return (EAI_FAMILY);
+		}
+	} else {
+		protocol = 0;
+		family = 0;
+		socktype = 0;
+		flags = 0;
+	}
+
+	rval = do_nodename(nodename, ai, hints);
+	if (rval != 0) {
+		freeaddrinfo(ai);
+		return (rval);
+	}
+
+	/*
+	 * First, look up the service name (port) if it was
+	 * requested.  If the socket type wasn't specified, then
+	 * try and figure it out.
+	 */
+	if (servname != NULL) {
+		char *e;
+
+		port = strtol(servname, &e, 10);
+		if (*e == '\0') {
+			if (socktype == 0)
+				return (EAI_SOCKTYPE);
+			if (port < 0 || port > 65535)
+				return (EAI_SERVICE);
+			port = htons((unsigned short) port);
+		} else {
+			sp = getservbyname(servname, proto);
+			if (sp == NULL)
+				return (EAI_SERVICE);
+			port = sp->s_port;
+			if (socktype == 0) {
+				if (strcmp(sp->s_proto, "tcp") == 0)
+					socktype = SOCK_STREAM;
+				else if (strcmp(sp->s_proto, "udp") == 0)
+					socktype = SOCK_DGRAM;
+			}
+		}
+	} else
+		port = 0;
+
+	/*
+	 *
+	 * Set up the port number
+	 */
+	if (ai->ai_family == AF_INET)
+		((struct sockaddr_in *)ai->ai_addr)->sin_port = (unsigned short) port;
+	else if (ai->ai_family == AF_INET6)
+		((struct sockaddr_in6 *)ai->ai_addr)->sin6_port = (unsigned short) port;
+	*res = ai;
+	return (0);
+}
+
+void
+freeaddrinfo(struct addrinfo *ai)
+{
+	if (ai->ai_canonname != NULL)
+	{
+		free(ai->ai_canonname);
+		ai->ai_canonname = NULL;
+	}
+	if (ai->ai_addr != NULL)
+	{
+		free(ai->ai_addr);
+		ai->ai_addr = NULL;
+	}
+	free(ai);
+	ai = NULL;
+}
+
+int
+getnameinfo (const struct sockaddr *sa, u_int salen, char *host,
+	size_t hostlen, char *serv, size_t servlen, int flags)
+{
+	struct hostent *hp;
+
+	if (sa->sa_family != AF_INET)
+		return (EAI_FAMILY);
+	hp = gethostbyaddr(
+	    (const char *)&((const struct sockaddr_in *)sa)->sin_addr,
+	    4, AF_INET);
+	if (hp == NULL) {
+		if (h_errno == TRY_AGAIN)
+			return (EAI_AGAIN);
+		else
+			return (EAI_FAIL);
+	}
+	if (host != NULL && hostlen > 0)
+		strlcpy(host, hp->h_name, hostlen);
+	return (0);
+}
+
+char *
+gai_strerror(int ecode)
+{
+	if (ecode < 0 || ecode > EAI_MAX)
+		ecode = EAI_MAX;
+	return ai_errlist[ecode];
+}
+
+static int
+do_nodename(
+	const char *nodename,
+	struct addrinfo *ai,
+	const struct addrinfo *hints)
+{
+	struct hostent *hp = NULL;
+	struct sockaddr_in *sockin;
+	struct sockaddr_in6 *sockin6;
+	int errval;
+
+	ai->ai_addr = calloc(sizeof(struct sockaddr_storage), 1);
+	if (ai->ai_addr == NULL)
+		return (EAI_MEMORY);
+
+	/*
+	 * For an empty node name just use the wildcard.
+	 * NOTE: We need to assume that the address family is
+	 * set elsewhere so that we can set the appropriate wildcard
+	 */
+	if (nodename == NULL) {
+		ai->ai_addrlen = sizeof(struct sockaddr_storage);
+		if (ai->ai_family == AF_INET)
+		{
+			sockin = (struct sockaddr_in *)ai->ai_addr;
+			sockin->sin_family = (short) ai->ai_family;
+			sockin->sin_addr.s_addr = htonl(INADDR_ANY);
+		}
+		else
+		{
+			sockin6 = (struct sockaddr_in6 *)ai->ai_addr;
+			sockin6->sin6_family = (short) ai->ai_family;
+			/*
+			 * we have already zeroed out the address
+			 * so we don't actually need to do this
+			 * This assignment is causing problems so
+			 * we don't do what this would do.
+			 sockin6->sin6_addr = in6addr_any;
+			 */
+		}
+#ifdef ISC_PLATFORM_HAVESALEN
+		ai->ai_addr->sa_len = SOCKLEN(ai->ai_addr);
+#endif
+
+		return (0);
+	}
+
+	/*
+	 * See if we have an IPv6 address
+	 */
+	if(strchr(nodename, ':') != NULL) {
+		if (inet_pton(AF_INET6, nodename,
+		    &((struct sockaddr_in6 *)ai->ai_addr)->sin6_addr) == 1) {
+			((struct sockaddr_in6 *)ai->ai_addr)->sin6_family = AF_INET6;
+			ai->ai_family = AF_INET6;
+			ai->ai_addrlen = sizeof(struct sockaddr_in6);
+			return (0);
+		}
+	}
+
+	/*
+	 * See if we have an IPv4 address
+	 */
+	if (inet_pton(AF_INET, nodename,
+	    &((struct sockaddr_in *)ai->ai_addr)->sin_addr) == 1) {
+		((struct sockaddr *)ai->ai_addr)->sa_family = AF_INET;
+		ai->ai_family = AF_INET;
+		ai->ai_addrlen = sizeof(struct sockaddr_in);
+		return (0);
+	}
+
+	/*
+	 * If the numeric host flag is set, don't attempt resolution
+	 */
+	if (hints != NULL && (hints->ai_flags & AI_NUMERICHOST))
+		return (EAI_NONAME);
+
+	/*
+	 * Look for a name
+	 */
+
+	errval = DNSlookup_name(nodename, AF_INET, &hp);
+
+	if (hp == NULL) {
+		if (errval == TRY_AGAIN || errval == EAI_AGAIN)
+			return (EAI_AGAIN);
+		else if (errval == EAI_NONAME) {
+			if (inet_pton(AF_INET, nodename,
+			    &((struct sockaddr_in *)ai->ai_addr)->sin_addr) == 1) {
+				((struct sockaddr *)ai->ai_addr)->sa_family = AF_INET;
+				ai->ai_family = AF_INET;
+				ai->ai_addrlen = sizeof(struct sockaddr_in);
+				return (0);
+			}
+			return (errval);
+		}
+		else
+		{
+			return (errval);
+		}
+	}
+	ai->ai_family = hp->h_addrtype;
+	ai->ai_addrlen = sizeof(struct sockaddr);
+	sockin = (struct sockaddr_in *)ai->ai_addr;
+	memcpy(&sockin->sin_addr, hp->h_addr, hp->h_length);
+	ai->ai_addr->sa_family = hp->h_addrtype;
+#ifdef ISC_PLATFORM_HAVESALEN
+	ai->ai_addr->sa_len = sizeof(struct sockaddr);
+#endif
+	if (hints != NULL && (hints->ai_flags & AI_CANONNAME))
+		ai->ai_canonname = estrdup(hp->h_name);
+	return (0);
+}
+
+#endif /* !ISC_PLATFORM_HAVEIPV6 */
diff --git a/libntp/ntp_worker.c b/libntp/ntp_worker.c
new file mode 100644
index 0000000..bb1cb87
--- /dev/null
+++ b/libntp/ntp_worker.c
@@ -0,0 +1,340 @@
+/*
+ * ntp_worker.c
+ */
+#include <config.h>
+#include "ntp_workimpl.h"
+
+#ifdef WORKER
+
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+
+#include "iosignal.h"
+#include "ntp_stdlib.h"
+#include "ntp_malloc.h"
+#include "ntp_syslog.h"
+#include "ntpd.h"
+#include "ntp_io.h"
+#include "ntp_assert.h"
+#include "ntp_unixtime.h"
+#include "intreswork.h"
+
+
+#define CHILD_MAX_IDLE	(3 * 60)	/* seconds, idle worker limit */
+
+blocking_child **	blocking_children;
+size_t			blocking_children_alloc;
+int			worker_per_query;	/* boolean */
+int			intres_req_pending;
+
+
+#ifndef HAVE_IO_COMPLETION_PORT
+/*
+ * pipe_socketpair()
+ *
+ * Provides an AF_UNIX socketpair on systems which have them, otherwise
+ * pair of unidirectional pipes.
+ */
+int
+pipe_socketpair(
+	int	caller_fds[2],
+	int *	is_pipe
+	)
+{
+	int	rc;
+	int	fds[2];
+	int	called_pipe;
+
+#ifdef HAVE_SOCKETPAIR
+	rc = socketpair(AF_UNIX, SOCK_STREAM, 0, &fds[0]);
+#else
+	rc = -1;
+#endif
+
+	if (-1 == rc) {
+		rc = pipe(&fds[0]);
+		called_pipe = TRUE;
+	} else {
+		called_pipe = FALSE;
+	}
+
+	if (-1 == rc)
+		return rc;
+
+	caller_fds[0] = fds[0];
+	caller_fds[1] = fds[1];
+	if (is_pipe != NULL)
+		*is_pipe = called_pipe;
+
+	return 0;
+}
+
+
+/*
+ * close_all_except()
+ *
+ * Close all file descriptors except the given keep_fd.
+ */
+void
+close_all_except(
+	int keep_fd
+	)
+{
+	int fd;
+
+	for (fd = 0; fd < keep_fd; fd++)
+		close(fd);
+
+	close_all_beyond(keep_fd);
+}
+
+
+/*
+ * close_all_beyond()
+ *
+ * Close all file descriptors after the given keep_fd, which is the
+ * highest fd to keep open.
+ */
+void
+close_all_beyond(
+	int keep_fd
+	)
+{
+# ifdef HAVE_CLOSEFROM
+	closefrom(keep_fd + 1);
+# elif defined(F_CLOSEM)
+	/*
+	 * From 'Writing Reliable AIX Daemons,' SG24-4946-00,
+	 * by Eric Agar (saves us from doing 32767 system
+	 * calls)
+	 */
+	if (fcntl(keep_fd + 1, F_CLOSEM, 0) == -1)
+		msyslog(LOG_ERR, "F_CLOSEM(%d): %m", keep_fd + 1);
+# else	/* !HAVE_CLOSEFROM && !F_CLOSEM follows */
+	int fd;
+	int max_fd;
+
+	max_fd = GETDTABLESIZE();
+	for (fd = keep_fd + 1; fd < max_fd; fd++)
+		close(fd);
+# endif	/* !HAVE_CLOSEFROM && !F_CLOSEM */
+}
+#endif	/* HAVE_IO_COMPLETION_PORT */
+
+
+u_int
+available_blocking_child_slot(void)
+{
+	const size_t	each = sizeof(blocking_children[0]);
+	u_int		slot;
+	size_t		prev_alloc;
+	size_t		new_alloc;
+	size_t		prev_octets;
+	size_t		octets;
+
+	for (slot = 0; slot < blocking_children_alloc; slot++) {
+		if (NULL == blocking_children[slot])
+			return slot;
+		if (blocking_children[slot]->reusable) {
+			blocking_children[slot]->reusable = FALSE;
+			return slot;
+		}
+	}
+
+	prev_alloc = blocking_children_alloc;
+	prev_octets = prev_alloc * each;
+	new_alloc = blocking_children_alloc + 4;
+	octets = new_alloc * each;
+	blocking_children = erealloc_zero(blocking_children, octets,
+					  prev_octets);
+	blocking_children_alloc = new_alloc;
+
+	return prev_alloc;
+}
+
+
+int
+queue_blocking_request(
+	blocking_work_req	rtype,
+	void *			req,
+	size_t			reqsize,
+	blocking_work_callback	done_func,
+	void *			context
+	)
+{
+	static u_int		intres_slot = UINT_MAX;
+	u_int			child_slot;
+	blocking_child *	c;
+	blocking_pipe_header	req_hdr;
+
+	req_hdr.octets = sizeof(req_hdr) + reqsize;
+	req_hdr.magic_sig = BLOCKING_REQ_MAGIC;
+	req_hdr.rtype = rtype;
+	req_hdr.done_func = done_func;
+	req_hdr.context = context;
+
+	child_slot = UINT_MAX;
+	if (worker_per_query || UINT_MAX == intres_slot ||
+	    blocking_children[intres_slot]->reusable)
+		child_slot = available_blocking_child_slot();
+	if (!worker_per_query) {
+		if (UINT_MAX == intres_slot)
+			intres_slot = child_slot;
+		else
+			child_slot = intres_slot;
+		if (0 == intres_req_pending)
+			intres_timeout_req(0);
+	}
+	intres_req_pending++;
+	INSIST(UINT_MAX != child_slot);
+	c = blocking_children[child_slot];
+	if (NULL == c) {
+		c = emalloc_zero(sizeof(*c));
+#ifdef WORK_FORK
+		c->req_read_pipe = -1;
+		c->req_write_pipe = -1;
+#endif
+#ifdef WORK_PIPE
+		c->resp_read_pipe = -1;
+		c->resp_write_pipe = -1;
+#endif
+		blocking_children[child_slot] = c;
+	}
+	req_hdr.child_idx = child_slot;
+
+	return send_blocking_req_internal(c, &req_hdr, req);
+}
+
+
+int queue_blocking_response(
+	blocking_child *		c,
+	blocking_pipe_header *		resp,
+	size_t				respsize,
+	const blocking_pipe_header *	req
+	)
+{
+	resp->octets = respsize;
+	resp->magic_sig = BLOCKING_RESP_MAGIC;
+	resp->rtype = req->rtype;
+	resp->context = req->context;
+	resp->done_func = req->done_func;
+
+	return send_blocking_resp_internal(c, resp);
+}
+
+
+void
+process_blocking_resp(
+	blocking_child *	c
+	)
+{
+	blocking_pipe_header *	resp;
+	void *			data;
+
+	/*
+	 * On Windows send_blocking_resp_internal() may signal the
+	 * blocking_response_ready event multiple times while we're
+	 * processing a response, so always consume all available
+	 * responses before returning to test the event again.
+	 */
+#ifdef WORK_THREAD
+	do {
+#endif
+		resp = receive_blocking_resp_internal(c);
+		if (NULL != resp) {
+			DEBUG_REQUIRE(BLOCKING_RESP_MAGIC ==
+				      resp->magic_sig);
+			data = (char *)resp + sizeof(*resp);
+			intres_req_pending--;
+			(*resp->done_func)(resp->rtype, resp->context,
+					   resp->octets - sizeof(*resp),
+					   data);
+			free(resp);
+		}
+#ifdef WORK_THREAD
+	} while (NULL != resp);
+#endif
+	if (!worker_per_query && 0 == intres_req_pending)
+		intres_timeout_req(CHILD_MAX_IDLE);
+	else if (worker_per_query)
+		req_child_exit(c);
+}
+
+
+/*
+ * blocking_child_common runs as a forked child or a thread
+ */
+int
+blocking_child_common(
+	blocking_child	*c
+	)
+{
+	int say_bye;
+	blocking_pipe_header *req;
+
+	say_bye = FALSE;
+	while (!say_bye) {
+		req = receive_blocking_req_internal(c);
+		if (NULL == req) {
+			say_bye = TRUE;
+			break;
+		}
+
+		DEBUG_REQUIRE(BLOCKING_REQ_MAGIC == req->magic_sig);
+
+		switch (req->rtype) {
+		case BLOCKING_GETADDRINFO:
+			if (blocking_getaddrinfo(c, req))
+				say_bye = TRUE;
+			break;
+
+		case BLOCKING_GETNAMEINFO:
+			if (blocking_getnameinfo(c, req))
+				say_bye = TRUE;
+			break;
+
+		default:
+			msyslog(LOG_ERR, "unknown req %d to blocking worker", req->rtype);
+			say_bye = TRUE;
+		}
+
+		free(req);
+	}
+
+	return 0;
+}
+
+
+/*
+ * worker_idle_timer_fired()
+ *
+ * The parent starts this timer when the last pending response has been
+ * received from the child, making it idle, and clears the timer when a
+ * request is dispatched to the child.  Once the timer expires, the
+ * child is sent packing.
+ *
+ * This is called when worker_idle_timer is nonzero and less than or
+ * equal to current_time.
+ */
+void
+worker_idle_timer_fired(void)
+{
+	u_int			idx;
+	blocking_child *	c;
+
+	DEBUG_REQUIRE(0 == intres_req_pending);
+
+	intres_timeout_req(0);
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+		if (NULL == c)
+			continue;
+		req_child_exit(c);
+	}
+}
+
+
+#else	/* !WORKER follows */
+int ntp_worker_nonempty_compilation_unit;
+#endif
diff --git a/libntp/numtoa.c b/libntp/numtoa.c
new file mode 100644
index 0000000..5efbe94
--- /dev/null
+++ b/libntp/numtoa.c
@@ -0,0 +1,59 @@
+/*
+ * numtoa - return asciized network numbers store in local array space
+ */
+#include <config.h>
+
+#include <sys/types.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>		/* ntohl */
+#endif
+
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+
+char *
+numtoa(
+	u_int32 num
+	)
+{
+	register u_int32 netnum;
+	register char *buf;
+
+	netnum = ntohl(num);
+	LIB_GETBUF(buf);
+	snprintf(buf, LIB_BUFLENGTH, "%lu.%lu.%lu.%lu",
+		 ((u_long)netnum >> 24) & 0xff,
+		 ((u_long)netnum >> 16) & 0xff,
+		 ((u_long)netnum >> 8) & 0xff,
+		 (u_long)netnum & 0xff);
+	return buf;
+}
+
+
+/* Convert a refid & stratum to a string */
+const char *
+refid_str(
+	u_int32	refid,
+	int	stratum
+	)
+{
+	char *	text;
+	size_t	tlen;
+
+	if (stratum > 1)
+		return numtoa(refid);
+
+	LIB_GETBUF(text);
+	text[0] = '.';
+	memcpy(&text[1], &refid, sizeof(refid));
+	text[1 + sizeof(refid)] = '\0';
+	tlen = strlen(text);
+	text[tlen] = '.';
+	text[tlen + 1] = '\0';
+
+	return text;
+}
+
diff --git a/libntp/numtohost.c b/libntp/numtohost.c
new file mode 100644
index 0000000..6b250d6
--- /dev/null
+++ b/libntp/numtohost.c
@@ -0,0 +1,43 @@
+/*
+ * numtohost - convert network number to host name.
+ */
+#include <config.h>
+
+#include <sys/types.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>		/* ntohl */
+#endif
+
+#include "ntp_fp.h"
+#include "ntp_stdlib.h"
+#include "lib_strbuf.h"
+
+#define	LOOPBACKNET	0x7f000000
+#define	LOOPBACKHOST	0x7f000001
+#define	LOOPBACKNETMASK	0xff000000
+
+char *
+numtohost(
+	u_int32 netnum
+	)
+{
+	char *bp;
+	struct hostent *hp;
+
+	/*
+	 * This is really gross, but saves lots of hanging looking for
+	 * hostnames for the radio clocks.  Don't bother looking up
+	 * addresses on the loopback network except for the loopback
+	 * host itself.
+	 */
+	if ((((ntohl(netnum) & LOOPBACKNETMASK) == LOOPBACKNET)
+	     && (ntohl(netnum) != LOOPBACKHOST))
+	    || ((hp = gethostbyaddr((char *)&netnum, sizeof netnum, AF_INET))
+		== 0))
+	    return numtoa(netnum);
+	
+	LIB_GETBUF(bp);
+	strlcpy(bp, hp->h_name, LIB_BUFLENGTH);
+
+	return bp;
+}
diff --git a/libntp/octtoint.c b/libntp/octtoint.c
new file mode 100644
index 0000000..d189e40
--- /dev/null
+++ b/libntp/octtoint.c
@@ -0,0 +1,36 @@
+/*
+ * octtoint - convert an ascii string in octal to an unsigned
+ *	      long, with error checking
+ */
+#include <config.h>
+#include <stdio.h>
+#include <ctype.h>
+
+#include "ntp_stdlib.h"
+
+int
+octtoint(
+	const char *str,
+	u_long *ival
+	)
+{
+	register u_long u;
+	register const char *cp;
+
+	cp = str;
+
+	if (*cp == '\0')
+	    return 0;
+
+	u = 0;
+	while (*cp != '\0') {
+		if (!isdigit((int)*cp) || *cp == '8' || *cp == '9')
+		    return 0;
+		if (u >= 0x20000000)
+		    return 0;	/* overflow */
+		u <<= 3;
+		u += *cp++ - '0';	/* ascii dependent */
+	}
+	*ival = u;
+	return 1;
+}
diff --git a/libntp/prettydate.c b/libntp/prettydate.c
new file mode 100644
index 0000000..f121297
--- /dev/null
+++ b/libntp/prettydate.c
@@ -0,0 +1,231 @@
+/*
+ * prettydate - convert a time stamp to something readable
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "ntp_unixtime.h"	/* includes <sys/time.h> */
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+#include "ntp_assert.h"
+#include "ntp_calendar.h"
+
+#if SIZEOF_TIME_T < 4
+# error sizeof(time_t) < 4 -- this will not work!
+#endif
+
+static char *common_prettydate(l_fp *, int);
+
+const char * const months[12] = {
+  "Jan", "Feb", "Mar", "Apr", "May", "Jun",
+  "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
+};
+
+const char * const daynames[7] = {
+  "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
+};
+
+/* Helper function to handle possible wraparound of the ntp epoch.
+ *
+ * Works by periodic extension of the ntp time stamp in the UN*X epoch.
+ * If the 'time_t' is 32 bit, use solar cycle warping to get the value
+ * in a suitable range. Also uses solar cycle warping to work around
+ * really buggy implementations of 'gmtime()' / 'localtime()' that
+ * cannot work with a negative time value, that is, times before
+ * 1970-01-01. (MSVCRT...)
+ *
+ * Apart from that we're assuming that the localtime/gmtime library
+ * functions have been updated so that they work...
+ *
+ * An explanation: The julian calendar repeats ever 28 years, because
+ * it's the LCM of 7 and 1461, the week and leap year cycles. This is
+ * called a 'solar cycle'. The gregorian calendar does the same as
+ * long as no centennial year (divisible by 100, but not 400) goes in
+ * the way. So between 1901 and 2099 (inclusive) we can warp time
+ * stamps by 28 years to make them suitable for localtime() and
+ * gmtime() if we have trouble. Of course this will play hubbubb with
+ * the DST zone switches, so we should do it only if necessary; but as
+ * we NEED a proper conversion to dates via gmtime() we should try to
+ * cope with as many idiosyncrasies as possible.
+ *
+ */
+
+/*
+ * solar cycle in unsigned secs and years, and the cycle limits.
+ */
+#define SOLAR_CYCLE_SECS   0x34AADC80UL	/* 7*1461*86400*/
+#define SOLAR_CYCLE_YEARS  28
+#define MINFOLD -3
+#define MAXFOLD	 3
+
+static struct tm *
+get_struct_tm(
+	const vint64 *stamp,
+	int	      local)
+{
+	struct tm *tm	 = NULL;
+	int32	   folds = 0;
+	time_t	   ts;
+
+#ifdef HAVE_INT64
+
+	int64 tl;
+	ts = tl = stamp->q_s;
+
+	/*
+	 * If there is chance of truncation, try to fix it. Let the
+	 * compiler find out if this can happen at all.
+	 */
+	while (ts != tl) { /* truncation? */
+		if (tl < 0) {
+			if (--folds < MINFOLD)
+				return NULL;
+			tl += SOLAR_CYCLE_SECS;
+		} else {
+			if (++folds > MAXFOLD)
+				return NULL;
+			tl -= SOLAR_CYCLE_SECS;
+		}
+		ts = tl; /* next try... */
+	}
+#else
+
+	/*
+	 * since we do not have 64-bit scalars, it's not likely we have
+	 * 64-bit time_t. Assume 32 bits and properly reduce the value.
+	 */
+	u_int32 hi, lo;
+
+	hi = stamp->D_s.hi;
+	lo = stamp->D_s.lo;
+
+	while ((hi && ~hi) || ((hi ^ lo) & 0x80000000u)) {
+		if (M_ISNEG(hi, lo)) {
+			if (--folds < MINFOLD)
+				return NULL;
+			M_ADD(hi, lo, 0, SOLAR_CYCLE_SECS);
+		} else {
+			if (++folds > MAXFOLD)
+				return NULL;
+			M_SUB(hi, lo, 0, SOLAR_CYCLE_SECS);
+		}
+	}
+	ts = (int32)lo;
+
+#endif
+
+	/*
+	 * 'ts' should be a suitable value by now. Just go ahead, but
+	 * with care:
+	 *
+	 * There are some pathological implementations of 'gmtime()'
+	 * and 'localtime()' out there. No matter if we have 32-bit or
+	 * 64-bit 'time_t', try to fix this by solar cycle warping
+	 * again...
+	 *
+	 * At least the MSDN says that the (Microsoft) Windoze
+	 * versions of 'gmtime()' and 'localtime()' will bark on time
+	 * stamps < 0.
+	 */
+	while ((tm = (*(local ? localtime : gmtime))(&ts)) == NULL)
+		if (ts < 0) {
+			if (--folds < MINFOLD)
+				return NULL;
+			ts += SOLAR_CYCLE_SECS;
+		} else if (ts >= SOLAR_CYCLE_SECS) {
+			if (++folds > MAXFOLD)
+				return NULL;
+			ts -= SOLAR_CYCLE_SECS;
+		} else
+			return NULL; /* That's truly pathological! */
+
+	/* 'tm' surely not NULL here! */
+	NTP_INSIST(tm != NULL);
+	if (folds != 0) {
+		tm->tm_year += folds * SOLAR_CYCLE_YEARS;
+		if (tm->tm_year <= 0 || tm->tm_year >= 200)
+			return NULL;	/* left warp range... can't help here! */
+	}
+
+	return tm;
+}
+
+static char *
+common_prettydate(
+	l_fp *ts,
+	int local
+	)
+{
+	static const char* pfmt[2] = {
+		"%08lx.%08lx  %s, %s %2d %4d %2d:%02d:%02d.%03u",
+		"%08lx.%08lx [%s, %s %2d %4d %2d:%02d:%02d.%03u UTC]"
+	};
+
+	char	    *bp;
+	struct tm   *tm;
+	u_int	     msec;
+	u_int32	     ntps;
+	vint64	     sec;
+
+	LIB_GETBUF(bp);
+
+	/* get & fix milliseconds */
+	ntps = ts->l_ui;
+	msec = ts->l_uf / 4294967;	/* fract / (2 ** 32 / 1000) */
+	if (msec >= 1000u) {
+		msec -= 1000u;
+		ntps++;
+	}
+	sec = ntpcal_ntp_to_time(ntps, NULL);
+	tm  = get_struct_tm(&sec, local);
+	if (!tm) {
+		/*
+		 * get a replacement, but always in UTC, using
+		 * ntpcal_time_to_date()
+		 */
+		struct calendar jd;
+		ntpcal_time_to_date(&jd, &sec);
+		snprintf(bp, LIB_BUFLENGTH, pfmt[local != 0],
+			 (u_long)ts->l_ui, (u_long)ts->l_uf,
+			 daynames[jd.weekday], months[jd.month-1],
+			 jd.monthday, jd.year, jd.hour,
+			 jd.minute, jd.second, msec);
+	} else		
+		snprintf(bp, LIB_BUFLENGTH, pfmt[0],
+			 (u_long)ts->l_ui, (u_long)ts->l_uf,
+			 daynames[tm->tm_wday], months[tm->tm_mon],
+			 tm->tm_mday, 1900 + tm->tm_year, tm->tm_hour,
+			 tm->tm_min, tm->tm_sec, msec);
+	return bp;
+}
+
+
+char *
+prettydate(
+	l_fp *ts
+	)
+{
+	return common_prettydate(ts, 1);
+}
+
+
+char *
+gmprettydate(
+	l_fp *ts
+	)
+{
+	return common_prettydate(ts, 0);
+}
+
+
+struct tm *
+ntp2unix_tm(
+	u_int32 ntp, int local
+	)
+{
+	vint64 vl;
+	vl = ntpcal_ntp_to_time(ntp, NULL);
+	return get_struct_tm(&vl, local);
+}
+	
diff --git a/libntp/recvbuff.c b/libntp/recvbuff.c
new file mode 100644
index 0000000..83a9ee1
--- /dev/null
+++ b/libntp/recvbuff.c
@@ -0,0 +1,326 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#include "ntp_assert.h"
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+#include "ntp_lists.h"
+#include "recvbuff.h"
+#include "iosignal.h"
+
+
+/*
+ * Memory allocation
+ */
+static u_long volatile full_recvbufs;	/* recvbufs on full_recv_fifo */
+static u_long volatile free_recvbufs;	/* recvbufs on free_recv_list */
+static u_long volatile total_recvbufs;	/* total recvbufs currently in use */
+static u_long volatile lowater_adds;	/* number of times we have added memory */
+static u_long volatile buffer_shortfall;/* number of missed free receive buffers
+					   between replenishments */
+
+static DECL_FIFO_ANCHOR(recvbuf_t) full_recv_fifo;
+static recvbuf_t *		   free_recv_list;
+	
+#if defined(SYS_WINNT)
+
+/*
+ * For Windows we need to set up a lock to manipulate the
+ * recv buffers to prevent corruption. We keep it lock for as
+ * short a time as possible
+ */
+static CRITICAL_SECTION RecvLock;
+# define LOCK()		EnterCriticalSection(&RecvLock)
+# define UNLOCK()	LeaveCriticalSection(&RecvLock)
+#else
+# define LOCK()		do {} while (FALSE)
+# define UNLOCK()	do {} while (FALSE)
+#endif
+
+#ifdef DEBUG
+static void uninit_recvbuff(void);
+#endif
+
+
+u_long
+free_recvbuffs (void)
+{
+	return free_recvbufs;
+}
+
+u_long
+full_recvbuffs (void)
+{
+	return full_recvbufs;
+}
+
+u_long
+total_recvbuffs (void)
+{
+	return total_recvbufs;
+}
+
+u_long
+lowater_additions(void)
+{
+	return lowater_adds;
+}
+
+static inline void 
+initialise_buffer(recvbuf_t *buff)
+{
+	ZERO(*buff);
+}
+
+static void
+create_buffers(int nbufs)
+{
+	register recvbuf_t *bufp;
+	int i, abuf;
+
+	abuf = nbufs + buffer_shortfall;
+	buffer_shortfall = 0;
+
+#ifndef DEBUG
+	bufp = emalloc_zero(abuf * sizeof(*bufp));
+#endif
+
+	for (i = 0; i < abuf; i++) {
+#ifdef DEBUG
+		/*
+		 * Allocate each buffer individually so they can be
+		 * free()d during ntpd shutdown on DEBUG builds to
+		 * keep them out of heap leak reports.
+		 */
+		bufp = emalloc_zero(sizeof(*bufp));
+#endif
+		LINK_SLIST(free_recv_list, bufp, link);
+		bufp++;
+		free_recvbufs++;
+		total_recvbufs++;
+	}
+	lowater_adds++;
+}
+
+void
+init_recvbuff(int nbufs)
+{
+
+	/*
+	 * Init buffer free list and stat counters
+	 */
+	free_recvbufs = total_recvbufs = 0;
+	full_recvbufs = lowater_adds = 0;
+
+	create_buffers(nbufs);
+
+#if defined(SYS_WINNT)
+	InitializeCriticalSection(&RecvLock);
+#endif
+
+#ifdef DEBUG
+	atexit(&uninit_recvbuff);
+#endif
+}
+
+
+#ifdef DEBUG
+static void
+uninit_recvbuff(void)
+{
+	recvbuf_t *rbunlinked;
+
+	for (;;) {
+		UNLINK_FIFO(rbunlinked, full_recv_fifo, link);
+		if (rbunlinked == NULL)
+			break;
+		free(rbunlinked);
+	}
+
+	for (;;) {
+		UNLINK_HEAD_SLIST(rbunlinked, free_recv_list, link);
+		if (rbunlinked == NULL)
+			break;
+		free(rbunlinked);
+	}
+}
+#endif	/* DEBUG */
+
+
+/*
+ * freerecvbuf - make a single recvbuf available for reuse
+ */
+void
+freerecvbuf(recvbuf_t *rb)
+{
+	if (rb == NULL) {
+		msyslog(LOG_ERR, "freerecvbuff received NULL buffer");
+		return;
+	}
+
+	LOCK();
+	rb->used--;
+	if (rb->used != 0)
+		msyslog(LOG_ERR, "******** freerecvbuff non-zero usage: %d *******", rb->used);
+	LINK_SLIST(free_recv_list, rb, link);
+	free_recvbufs++;
+	UNLOCK();
+}
+
+	
+void
+add_full_recv_buffer(recvbuf_t *rb)
+{
+	if (rb == NULL) {
+		msyslog(LOG_ERR, "add_full_recv_buffer received NULL buffer");
+		return;
+	}
+	LOCK();
+	LINK_FIFO(full_recv_fifo, rb, link);
+	full_recvbufs++;
+	UNLOCK();
+}
+
+
+recvbuf_t *
+get_free_recv_buffer(void)
+{
+	recvbuf_t *buffer;
+
+	LOCK();
+	UNLINK_HEAD_SLIST(buffer, free_recv_list, link);
+	if (buffer != NULL) {
+		free_recvbufs--;
+		initialise_buffer(buffer);
+		buffer->used++;
+	} else {
+		buffer_shortfall++;
+	}
+	UNLOCK();
+
+	return buffer;
+}
+
+
+#ifdef HAVE_IO_COMPLETION_PORT
+recvbuf_t *
+get_free_recv_buffer_alloc(void)
+{
+	recvbuf_t *buffer;
+	
+	buffer = get_free_recv_buffer();
+	if (NULL == buffer) {
+		create_buffers(RECV_INC);
+		buffer = get_free_recv_buffer();
+	}
+	NTP_ENSURE(buffer != NULL);
+	return (buffer);
+}
+#endif
+
+
+recvbuf_t *
+get_full_recv_buffer(void)
+{
+	recvbuf_t *	rbuf;
+
+	LOCK();
+	
+#ifdef HAVE_SIGNALED_IO
+	/*
+	 * make sure there are free buffers when we
+	 * wander off to do lengthy packet processing with
+	 * any buffer we grab from the full list.
+	 * 
+	 * fixes malloc() interrupted by SIGIO risk
+	 * (Bug 889)
+	 */
+	if (NULL == free_recv_list || buffer_shortfall > 0) {
+		/*
+		 * try to get us some more buffers
+		 */
+		create_buffers(RECV_INC);
+	}
+#endif
+
+	/*
+	 * try to grab a full buffer
+	 */
+	UNLINK_FIFO(rbuf, full_recv_fifo, link);
+	if (rbuf != NULL)
+		full_recvbufs--;
+	UNLOCK();
+
+	return rbuf;
+}
+
+
+/*
+ * purge_recv_buffers_for_fd() - purges any previously-received input
+ *				 from a given file descriptor.
+ */
+void
+purge_recv_buffers_for_fd(
+	SOCKET	fd
+	)
+{
+	recvbuf_t *rbufp;
+	recvbuf_t *next;
+	recvbuf_t *punlinked;
+
+	LOCK();
+
+	for (rbufp = HEAD_FIFO(full_recv_fifo);
+	     rbufp != NULL;
+	     rbufp = next) {
+		next = rbufp->link;
+		if (rbufp->fd == fd) {
+			UNLINK_MID_FIFO(punlinked, full_recv_fifo,
+					rbufp, link, recvbuf_t);
+			INSIST(punlinked == rbufp);
+			full_recvbufs--;
+			freerecvbuf(rbufp);
+		}
+	}
+
+	UNLOCK();
+}
+
+
+/*
+ * Checks to see if there are buffers to process
+ */
+isc_boolean_t has_full_recv_buffer(void)
+{
+	if (HEAD_FIFO(full_recv_fifo) != NULL)
+		return (ISC_TRUE);
+	else
+		return (ISC_FALSE);
+}
+
+
+#ifdef NTP_DEBUG_LISTS_H
+void
+check_gen_fifo_consistency(void *fifo)
+{
+	gen_fifo *pf;
+	gen_node *pthis;
+	gen_node **pptail;
+
+	pf = fifo;
+	REQUIRE((NULL == pf->phead && NULL == pf->pptail) ||
+		(NULL != pf->phead && NULL != pf->pptail));
+
+	pptail = &pf->phead;
+	for (pthis = pf->phead;
+	     pthis != NULL;
+	     pthis = pthis->link)
+		if (NULL != pthis->link)
+			pptail = &pthis->link;
+
+	REQUIRE(NULL == pf->pptail || pptail == pf->pptail);
+}
+#endif	/* NTP_DEBUG_LISTS_H */
diff --git a/libntp/refnumtoa.c b/libntp/refnumtoa.c
new file mode 100644
index 0000000..e6ca55a
--- /dev/null
+++ b/libntp/refnumtoa.c
@@ -0,0 +1,36 @@
+/*
+ * refnumtoa - return asciized refclock addresses stored in local array space
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_net.h"
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+
+const char *
+refnumtoa(
+	sockaddr_u *num
+	)
+{
+	u_int32 netnum;
+	char *buf;
+	const char *rclock;
+
+	if (!ISREFCLOCKADR(num))
+		return socktoa(num);
+
+	LIB_GETBUF(buf);
+	netnum = SRCADR(num);
+	rclock = clockname((int)((u_long)netnum >> 8) & 0xff);
+
+	if (rclock != NULL)
+		snprintf(buf, LIB_BUFLENGTH, "%s(%lu)",
+			 rclock, (u_long)netnum & 0xff);
+	else
+		snprintf(buf, LIB_BUFLENGTH, "REFCLK(%lu,%lu)",
+			 ((u_long)netnum >> 8) & 0xff,
+			 (u_long)netnum & 0xff);
+
+	return buf;
+}
diff --git a/libntp/snprintf.c b/libntp/snprintf.c
new file mode 100644
index 0000000..2b6a374
--- /dev/null
+++ b/libntp/snprintf.c
@@ -0,0 +1,2132 @@
+/*
+ * Modified by Dave Hart for integration into NTP 4.2.7 <hart@ntp.org>
+ *
+ * Changed in a backwards-incompatible way to separate HAVE_SNPRINTF
+ * from HW_WANT_RPL_SNPRINTF, etc. for each of the four replaced
+ * functions.
+ *
+ * Changed to honor hw_force_rpl_snprintf=yes, etc.  This is used by NTP
+ * to test rpl_snprintf() and rpl_vsnprintf() on platforms which provide
+ * C99-compliant implementations.
+ */
+
+/* $Id: snprintf.c,v 1.9 2008/01/20 14:02:00 holger Exp $ */
+
+/*
+ * Copyright (c) 1995 Patrick Powell.
+ *
+ * This code is based on code written by Patrick Powell <papowell@astart.com>.
+ * It may be used for any purpose as long as this notice remains intact on all
+ * source code distributions.
+ */
+
+/*
+ * Copyright (c) 2008 Holger Weiss.
+ *
+ * This version of the code is maintained by Holger Weiss <holger@jhweiss.de>.
+ * My changes to the code may freely be used, modified and/or redistributed for
+ * any purpose.  It would be nice if additions and fixes to this file (including
+ * trivial code cleanups) would be sent back in order to let me include them in
+ * the version available at <http://www.jhweiss.de/software/snprintf.html>.
+ * However, this is not a requirement for using or redistributing (possibly
+ * modified) versions of this file, nor is leaving this notice intact mandatory.
+ */
+
+/*
+ * History
+ *
+ * 2008-01-20 Holger Weiss <holger@jhweiss.de> for C99-snprintf 1.1:
+ *
+ * 	Fixed the detection of infinite floating point values on IRIX (and
+ * 	possibly other systems) and applied another few minor cleanups.
+ *
+ * 2008-01-06 Holger Weiss <holger@jhweiss.de> for C99-snprintf 1.0:
+ *
+ * 	Added a lot of new features, fixed many bugs, and incorporated various
+ * 	improvements done by Andrew Tridgell <tridge@samba.org>, Russ Allbery
+ * 	<rra@stanford.edu>, Hrvoje Niksic <hniksic@xemacs.org>, Damien Miller
+ * 	<djm@mindrot.org>, and others for the Samba, INN, Wget, and OpenSSH
+ * 	projects.  The additions include: support the "e", "E", "g", "G", and
+ * 	"F" conversion specifiers (and use conversion style "f" or "F" for the
+ * 	still unsupported "a" and "A" specifiers); support the "hh", "ll", "j",
+ * 	"t", and "z" length modifiers; support the "#" flag and the (non-C99)
+ * 	"'" flag; use localeconv(3) (if available) to get both the current
+ * 	locale's decimal point character and the separator between groups of
+ * 	digits; fix the handling of various corner cases of field width and
+ * 	precision specifications; fix various floating point conversion bugs;
+ * 	handle infinite and NaN floating point values; don't attempt to write to
+ * 	the output buffer (which may be NULL) if a size of zero was specified;
+ * 	check for integer overflow of the field width, precision, and return
+ * 	values and during the floating point conversion; use the OUTCHAR() macro
+ * 	instead of a function for better performance; provide asprintf(3) and
+ * 	vasprintf(3) functions; add new test cases.  The replacement functions
+ * 	have been renamed to use an "rpl_" prefix, the function calls in the
+ * 	main project (and in this file) must be redefined accordingly for each
+ * 	replacement function which is needed (by using Autoconf or other means).
+ * 	Various other minor improvements have been applied and the coding style
+ * 	was cleaned up for consistency.
+ *
+ * 2007-07-23 Holger Weiss <holger@jhweiss.de> for Mutt 1.5.13:
+ *
+ * 	C99 compliant snprintf(3) and vsnprintf(3) functions return the number
+ * 	of characters that would have been written to a sufficiently sized
+ * 	buffer (excluding the '\0').  The original code simply returned the
+ * 	length of the resulting output string, so that's been fixed.
+ *
+ * 1998-03-05 Michael Elkins <me@mutt.org> for Mutt 0.90.8:
+ *
+ * 	The original code assumed that both snprintf(3) and vsnprintf(3) were
+ * 	missing.  Some systems only have snprintf(3) but not vsnprintf(3), so
+ * 	the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF.
+ *
+ * 1998-01-27 Thomas Roessler <roessler@does-not-exist.org> for Mutt 0.89i:
+ *
+ * 	The PGP code was using unsigned hexadecimal formats.  Unfortunately,
+ * 	unsigned formats simply didn't work.
+ *
+ * 1997-10-22 Brandon Long <blong@fiction.net> for Mutt 0.87.1:
+ *
+ * 	Ok, added some minimal floating point support, which means this probably
+ * 	requires libm on most operating systems.  Don't yet support the exponent
+ * 	(e,E) and sigfig (g,G).  Also, fmtint() was pretty badly broken, it just
+ * 	wasn't being exercised in ways which showed it, so that's been fixed.
+ * 	Also, formatted the code to Mutt conventions, and removed dead code left
+ * 	over from the original.  Also, there is now a builtin-test, run with:
+ * 	gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm && ./snprintf
+ *
+ * 2996-09-15 Brandon Long <blong@fiction.net> for Mutt 0.43:
+ *
+ * 	This was ugly.  It is still ugly.  I opted out of floating point
+ * 	numbers, but the formatter understands just about everything from the
+ * 	normal C string format, at least as far as I can tell from the Solaris
+ * 	2.5 printf(3S) man page.
+ */
+
+/*
+ * ToDo
+ *
+ * - Add wide character support.
+ * - Add support for "%a" and "%A" conversions.
+ * - Create test routines which predefine the expected results.  Our test cases
+ *   usually expose bugs in system implementations rather than in ours :-)
+ */
+
+/*
+ * Usage
+ *
+ * 1) The following preprocessor macros should be defined to 1 if the feature or
+ *    file in question is available on the target system (by using Autoconf or
+ *    other means), though basic functionality should be available as long as
+ *    HAVE_STDARG_H and HAVE_STDLIB_H are defined correctly:
+ *
+ *	HW_WANT_RPL_VSNPRINTF
+ *	HW_WANT_RPL_SNPRINTF
+ *	HW_WANT_RPL_VASPRINTF
+ *	HW_WANT_RPL_ASPRINTF
+ *	HAVE_VSNPRINTF	// define to 1 #if HW_WANT_RPL_VSNPRINTF
+ *	HAVE_SNPRINTF	// define to 1 #if HW_WANT_RPL_SNPRINTF
+ *	HAVE_VASPRINTF	// define to 1 #if HW_WANT_RPL_VASPRINTF
+ *	HAVE_ASPRINTF	// define to 1 #if HW_WANT_RPL_ASPRINTF
+ *	HAVE_STDARG_H
+ *	HAVE_STDDEF_H
+ *	HAVE_STDINT_H
+ *	HAVE_STDLIB_H
+ *	HAVE_INTTYPES_H
+ *	HAVE_LOCALE_H
+ *	HAVE_LOCALECONV
+ *	HAVE_LCONV_DECIMAL_POINT
+ *	HAVE_LCONV_THOUSANDS_SEP
+ *	HAVE_LONG_DOUBLE
+ *	HAVE_LONG_LONG_INT
+ *	HAVE_UNSIGNED_LONG_LONG_INT
+ *	HAVE_INTMAX_T
+ *	HAVE_UINTMAX_T
+ *	HAVE_UINTPTR_T
+ *	HAVE_PTRDIFF_T
+ *	HAVE_VA_COPY
+ *	HAVE___VA_COPY
+ *
+ * 2) The calls to the functions which should be replaced must be redefined
+ *    throughout the project files (by using Autoconf or other means):
+ *
+ *	#if HW_WANT_RPL_VSNPRINTF
+ *	#define vsnprintf rpl_vsnprintf
+ *	#endif
+ *	#if HW_WANT_RPL_SNPRINTF
+ *	#define snprintf rpl_snprintf
+ *	#endif
+ *	#if HW_WANT_RPL_VASPRINTF
+ *	#define vasprintf rpl_vasprintf
+ *	#endif
+ *	#if HW_WANT_RPL_ASPRINTF
+ *	#define asprintf rpl_asprintf
+ *	#endif
+ *
+ * 3) The required replacement functions should be declared in some header file
+ *    included throughout the project files:
+ *
+ *	#if HAVE_CONFIG_H
+ *	#include <config.h>
+ *	#endif
+ *	#if HAVE_STDARG_H
+ *	#include <stdarg.h>
+ *	#if HW_WANT_RPL_VSNPRINTF
+ *	int rpl_vsnprintf(char *, size_t, const char *, va_list);
+ *	#endif
+ *	#if HW_WANT_RPL_SNPRINTF
+ *	int rpl_snprintf(char *, size_t, const char *, ...);
+ *	#endif
+ *	#if HW_WANT_RPL_VASPRINTF
+ *	int rpl_vasprintf(char **, const char *, va_list);
+ *	#endif
+ *	#if HW_WANT_RPL_ASPRINTF
+ *	int rpl_asprintf(char **, const char *, ...);
+ *	#endif
+ *	#endif
+ *
+ * Autoconf macros for handling step 1 and step 2 are available at
+ * <http://www.jhweiss.de/software/snprintf.html>.
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif	/* HAVE_CONFIG_H */
+
+#if TEST_SNPRINTF
+#include <math.h>	/* For pow(3), NAN, and INFINITY. */
+#include <string.h>	/* For strcmp(3). */
+#if defined(__NetBSD__) || \
+    defined(__FreeBSD__) || \
+    defined(__OpenBSD__) || \
+    defined(__NeXT__) || \
+    defined(__bsd__)
+#define OS_BSD 1
+#elif defined(sgi) || defined(__sgi)
+#ifndef __c99
+#define __c99	/* Force C99 mode to get <stdint.h> included on IRIX 6.5.30. */
+#endif	/* !defined(__c99) */
+#define OS_IRIX 1
+#define OS_SYSV 1
+#elif defined(__svr4__)
+#define OS_SYSV 1
+#elif defined(__linux__)
+#define OS_LINUX 1
+#endif	/* defined(__NetBSD__) || defined(__FreeBSD__) || [...] */
+#if HAVE_CONFIG_H	/* Undefine definitions possibly done in config.h. */
+#ifdef HAVE_SNPRINTF
+#undef HAVE_SNPRINTF
+#endif	/* defined(HAVE_SNPRINTF) */
+#ifdef HAVE_VSNPRINTF
+#undef HAVE_VSNPRINTF
+#endif	/* defined(HAVE_VSNPRINTF) */
+#ifdef HAVE_ASPRINTF
+#undef HAVE_ASPRINTF
+#endif	/* defined(HAVE_ASPRINTF) */
+#ifdef HAVE_VASPRINTF
+#undef HAVE_VASPRINTF
+#endif	/* defined(HAVE_VASPRINTF) */
+#ifdef snprintf
+#undef snprintf
+#endif	/* defined(snprintf) */
+#ifdef vsnprintf
+#undef vsnprintf
+#endif	/* defined(vsnprintf) */
+#ifdef asprintf
+#undef asprintf
+#endif	/* defined(asprintf) */
+#ifdef vasprintf
+#undef vasprintf
+#endif	/* defined(vasprintf) */
+#else	/* By default, we assume a modern system for testing. */
+#ifndef HAVE_STDARG_H
+#define HAVE_STDARG_H 1
+#endif	/* HAVE_STDARG_H */
+#ifndef HAVE_STDDEF_H
+#define HAVE_STDDEF_H 1
+#endif	/* HAVE_STDDEF_H */
+#ifndef HAVE_STDINT_H
+#define HAVE_STDINT_H 1
+#endif	/* HAVE_STDINT_H */
+#ifndef HAVE_STDLIB_H
+#define HAVE_STDLIB_H 1
+#endif	/* HAVE_STDLIB_H */
+#ifndef HAVE_INTTYPES_H
+#define HAVE_INTTYPES_H 1
+#endif	/* HAVE_INTTYPES_H */
+#ifndef HAVE_LOCALE_H
+#define HAVE_LOCALE_H 1
+#endif	/* HAVE_LOCALE_H */
+#ifndef HAVE_LOCALECONV
+#define HAVE_LOCALECONV 1
+#endif	/* !defined(HAVE_LOCALECONV) */
+#ifndef HAVE_LCONV_DECIMAL_POINT
+#define HAVE_LCONV_DECIMAL_POINT 1
+#endif	/* HAVE_LCONV_DECIMAL_POINT */
+#ifndef HAVE_LCONV_THOUSANDS_SEP
+#define HAVE_LCONV_THOUSANDS_SEP 1
+#endif	/* HAVE_LCONV_THOUSANDS_SEP */
+#ifndef HAVE_LONG_DOUBLE
+#define HAVE_LONG_DOUBLE 1
+#endif	/* !defined(HAVE_LONG_DOUBLE) */
+#ifndef HAVE_LONG_LONG_INT
+#define HAVE_LONG_LONG_INT 1
+#endif	/* !defined(HAVE_LONG_LONG_INT) */
+#ifndef HAVE_UNSIGNED_LONG_LONG_INT
+#define HAVE_UNSIGNED_LONG_LONG_INT 1
+#endif	/* !defined(HAVE_UNSIGNED_LONG_LONG_INT) */
+#ifndef HAVE_INTMAX_T
+#define HAVE_INTMAX_T 1
+#endif	/* !defined(HAVE_INTMAX_T) */
+#ifndef HAVE_UINTMAX_T
+#define HAVE_UINTMAX_T 1
+#endif	/* !defined(HAVE_UINTMAX_T) */
+#ifndef HAVE_UINTPTR_T
+#define HAVE_UINTPTR_T 1
+#endif	/* !defined(HAVE_UINTPTR_T) */
+#ifndef HAVE_PTRDIFF_T
+#define HAVE_PTRDIFF_T 1
+#endif	/* !defined(HAVE_PTRDIFF_T) */
+#ifndef HAVE_VA_COPY
+#define HAVE_VA_COPY 1
+#endif	/* !defined(HAVE_VA_COPY) */
+#ifndef HAVE___VA_COPY
+#define HAVE___VA_COPY 1
+#endif	/* !defined(HAVE___VA_COPY) */
+#endif	/* HAVE_CONFIG_H */
+#define snprintf rpl_snprintf
+#define vsnprintf rpl_vsnprintf
+#define asprintf rpl_asprintf
+#define vasprintf rpl_vasprintf
+#endif	/* TEST_SNPRINTF */
+
+#if HW_WANT_RPL_SNPRINTF || HW_WANT_RPL_VSNPRINTF || HW_WANT_RPL_ASPRINTF || HW_WANT_RPL_VASPRINTF
+#include <stdio.h>	/* For NULL, size_t, vsnprintf(3), and vasprintf(3). */
+#ifdef VA_START
+#undef VA_START
+#endif	/* defined(VA_START) */
+#ifdef VA_SHIFT
+#undef VA_SHIFT
+#endif	/* defined(VA_SHIFT) */
+#if HAVE_STDARG_H
+#include <stdarg.h>
+#define VA_START(ap, last) va_start(ap, last)
+#define VA_SHIFT(ap, value, type) /* No-op for ANSI C. */
+#else	/* Assume <varargs.h> is available. */
+#include <varargs.h>
+#define VA_START(ap, last) va_start(ap)	/* "last" is ignored. */
+#define VA_SHIFT(ap, value, type) value = va_arg(ap, type)
+#endif	/* HAVE_STDARG_H */
+
+#if HW_WANT_RPL_VASPRINTF
+#if HAVE_STDLIB_H
+#include <stdlib.h>	/* For malloc(3). */
+#endif	/* HAVE_STDLIB_H */
+#ifdef VA_COPY
+#undef VA_COPY
+#endif	/* defined(VA_COPY) */
+#ifdef VA_END_COPY
+#undef VA_END_COPY
+#endif	/* defined(VA_END_COPY) */
+#if HAVE_VA_COPY
+#define VA_COPY(dest, src) va_copy(dest, src)
+#define VA_END_COPY(ap) va_end(ap)
+#elif HAVE___VA_COPY
+#define VA_COPY(dest, src) __va_copy(dest, src)
+#define VA_END_COPY(ap) va_end(ap)
+#else
+#define VA_COPY(dest, src) (void)mymemcpy(&dest, &src, sizeof(va_list))
+#define VA_END_COPY(ap) /* No-op. */
+#define NEED_MYMEMCPY 1
+static void *mymemcpy(void *, void *, size_t);
+#endif	/* HAVE_VA_COPY */
+#endif	/* HW_WANT_RPL_VASPRINTF */
+
+#if HW_WANT_RPL_VSNPRINTF
+#include <errno.h>	/* For ERANGE and errno. */
+#include <limits.h>	/* For *_MAX. */
+#if HAVE_INTTYPES_H
+#include <inttypes.h>	/* For intmax_t (if not defined in <stdint.h>). */
+#endif	/* HAVE_INTTYPES_H */
+#if HAVE_LOCALE_H
+#include <locale.h>	/* For localeconv(3). */
+#endif	/* HAVE_LOCALE_H */
+#if HAVE_STDDEF_H
+#include <stddef.h>	/* For ptrdiff_t. */
+#endif	/* HAVE_STDDEF_H */
+#if HAVE_STDINT_H
+#include <stdint.h>	/* For intmax_t. */
+#endif	/* HAVE_STDINT_H */
+
+/* Support for unsigned long long int.  We may also need ULLONG_MAX. */
+#ifndef ULONG_MAX	/* We may need ULONG_MAX as a fallback. */
+#ifdef UINT_MAX
+#define ULONG_MAX UINT_MAX
+#else
+#define ULONG_MAX INT_MAX
+#endif	/* defined(UINT_MAX) */
+#endif	/* !defined(ULONG_MAX) */
+#ifdef ULLONG
+#undef ULLONG
+#endif	/* defined(ULLONG) */
+#if HAVE_UNSIGNED_LONG_LONG_INT
+#define ULLONG unsigned long long int
+#ifndef ULLONG_MAX
+#define ULLONG_MAX ULONG_MAX
+#endif	/* !defined(ULLONG_MAX) */
+#else
+#define ULLONG unsigned long int
+#ifdef ULLONG_MAX
+#undef ULLONG_MAX
+#endif	/* defined(ULLONG_MAX) */
+#define ULLONG_MAX ULONG_MAX
+#endif	/* HAVE_LONG_LONG_INT */
+
+/* Support for uintmax_t.  We also need UINTMAX_MAX. */
+#ifdef UINTMAX_T
+#undef UINTMAX_T
+#endif	/* defined(UINTMAX_T) */
+#if HAVE_UINTMAX_T || defined(uintmax_t)
+#define UINTMAX_T uintmax_t
+#ifndef UINTMAX_MAX
+#define UINTMAX_MAX ULLONG_MAX
+#endif	/* !defined(UINTMAX_MAX) */
+#else
+#define UINTMAX_T ULLONG
+#ifdef UINTMAX_MAX
+#undef UINTMAX_MAX
+#endif	/* defined(UINTMAX_MAX) */
+#define UINTMAX_MAX ULLONG_MAX
+#endif	/* HAVE_UINTMAX_T || defined(uintmax_t) */
+
+/* Support for long double. */
+#ifndef LDOUBLE
+#if HAVE_LONG_DOUBLE
+#define LDOUBLE long double
+#else
+#define LDOUBLE double
+#endif	/* HAVE_LONG_DOUBLE */
+#endif	/* !defined(LDOUBLE) */
+
+/* Support for long long int. */
+#ifndef LLONG
+#if HAVE_LONG_LONG_INT
+#define LLONG long long int
+#else
+#define LLONG long int
+#endif	/* HAVE_LONG_LONG_INT */
+#endif	/* !defined(LLONG) */
+
+/* Support for intmax_t. */
+#ifndef INTMAX_T
+#if HAVE_INTMAX_T || defined(intmax_t)
+#define INTMAX_T intmax_t
+#else
+#define INTMAX_T LLONG
+#endif	/* HAVE_INTMAX_T || defined(intmax_t) */
+#endif	/* !defined(INTMAX_T) */
+
+/* Support for uintptr_t. */
+#ifndef UINTPTR_T
+#if HAVE_UINTPTR_T || defined(uintptr_t)
+#define UINTPTR_T uintptr_t
+#else
+#define UINTPTR_T unsigned long int
+#endif	/* HAVE_UINTPTR_T || defined(uintptr_t) */
+#endif	/* !defined(UINTPTR_T) */
+
+/* Support for ptrdiff_t. */
+#ifndef PTRDIFF_T
+#if HAVE_PTRDIFF_T || defined(ptrdiff_t)
+#define PTRDIFF_T ptrdiff_t
+#else
+#define PTRDIFF_T long int
+#endif	/* HAVE_PTRDIFF_T || defined(ptrdiff_t) */
+#endif	/* !defined(PTRDIFF_T) */
+
+/*
+ * We need an unsigned integer type corresponding to ptrdiff_t (cf. C99:
+ * 7.19.6.1, 7).  However, we'll simply use PTRDIFF_T and convert it to an
+ * unsigned type if necessary.  This should work just fine in practice.
+ */
+#ifndef UPTRDIFF_T
+#define UPTRDIFF_T PTRDIFF_T
+#endif	/* !defined(UPTRDIFF_T) */
+
+/*
+ * We need a signed integer type corresponding to size_t (cf. C99: 7.19.6.1, 7).
+ * However, we'll simply use size_t and convert it to a signed type if
+ * necessary.  This should work just fine in practice.
+ */
+#ifndef SSIZE_T
+#define SSIZE_T size_t
+#endif	/* !defined(SSIZE_T) */
+
+/* Either ERANGE or E2BIG should be available everywhere. */
+#ifndef ERANGE
+#define ERANGE E2BIG
+#endif	/* !defined(ERANGE) */
+#ifndef EOVERFLOW
+#define EOVERFLOW ERANGE
+#endif	/* !defined(EOVERFLOW) */
+
+/*
+ * Buffer size to hold the octal string representation of UINT128_MAX without
+ * nul-termination ("3777777777777777777777777777777777777777777").
+ */
+#ifdef MAX_CONVERT_LENGTH
+#undef MAX_CONVERT_LENGTH
+#endif	/* defined(MAX_CONVERT_LENGTH) */
+#define MAX_CONVERT_LENGTH      43
+
+/* Format read states. */
+#define PRINT_S_DEFAULT         0
+#define PRINT_S_FLAGS           1
+#define PRINT_S_WIDTH           2
+#define PRINT_S_DOT             3
+#define PRINT_S_PRECISION       4
+#define PRINT_S_MOD             5
+#define PRINT_S_CONV            6
+
+/* Format flags. */
+#define PRINT_F_MINUS           (1 << 0)
+#define PRINT_F_PLUS            (1 << 1)
+#define PRINT_F_SPACE           (1 << 2)
+#define PRINT_F_NUM             (1 << 3)
+#define PRINT_F_ZERO            (1 << 4)
+#define PRINT_F_QUOTE           (1 << 5)
+#define PRINT_F_UP              (1 << 6)
+#define PRINT_F_UNSIGNED        (1 << 7)
+#define PRINT_F_TYPE_G          (1 << 8)
+#define PRINT_F_TYPE_E          (1 << 9)
+
+/* Conversion flags. */
+#define PRINT_C_CHAR            1
+#define PRINT_C_SHORT           2
+#define PRINT_C_LONG            3
+#define PRINT_C_LLONG           4
+#define PRINT_C_LDOUBLE         5
+#define PRINT_C_SIZE            6
+#define PRINT_C_PTRDIFF         7
+#define PRINT_C_INTMAX          8
+
+#ifndef MAX
+#define MAX(x, y) ((x >= y) ? x : y)
+#endif	/* !defined(MAX) */
+#ifndef CHARTOINT
+#define CHARTOINT(ch) (ch - '0')
+#endif	/* !defined(CHARTOINT) */
+#ifndef ISDIGIT
+#define ISDIGIT(ch) ('0' <= (unsigned char)ch && (unsigned char)ch <= '9')
+#endif	/* !defined(ISDIGIT) */
+#ifndef ISNAN
+#define ISNAN(x) (x != x)
+#endif	/* !defined(ISNAN) */
+#ifndef ISINF
+#define ISINF(x) (x != 0.0 && x + x == x)
+#endif	/* !defined(ISINF) */
+
+#ifdef OUTCHAR
+#undef OUTCHAR
+#endif	/* defined(OUTCHAR) */
+#define OUTCHAR(str, len, size, ch)                                          \
+do {                                                                         \
+	if (len + 1 < size)                                                  \
+		str[len] = ch;                                               \
+	(len)++;                                                             \
+} while (/* CONSTCOND */ 0)
+
+static void fmtstr(char *, size_t *, size_t, const char *, int, int, int);
+static void fmtint(char *, size_t *, size_t, INTMAX_T, int, int, int, int);
+static void fmtflt(char *, size_t *, size_t, LDOUBLE, int, int, int, int *);
+static void printsep(char *, size_t *, size_t);
+static int getnumsep(int);
+static int getexponent(LDOUBLE);
+static int convert(UINTMAX_T, char *, size_t, int, int);
+static UINTMAX_T cast(LDOUBLE);
+static UINTMAX_T myround(LDOUBLE);
+static LDOUBLE mypow10(int);
+
+int
+rpl_vsnprintf(char *str, size_t size, const char *format, va_list args);
+
+int
+rpl_vsnprintf(char *str, size_t size, const char *format, va_list args)
+{
+	LDOUBLE fvalue;
+	INTMAX_T value;
+	unsigned char cvalue;
+	const char *strvalue;
+	INTMAX_T *intmaxptr;
+	PTRDIFF_T *ptrdiffptr;
+	SSIZE_T *sizeptr;
+	LLONG *llongptr;
+	long int *longptr;
+	int *intptr;
+	short int *shortptr;
+	signed char *charptr;
+	size_t len = 0;
+	int overflow = 0;
+	int base = 0;
+	int cflags = 0;
+	int flags = 0;
+	int width = 0;
+	int precision = -1;
+	int state = PRINT_S_DEFAULT;
+	char ch = *format++;
+
+	/*
+	 * C99 says: "If `n' is zero, nothing is written, and `s' may be a null
+	 * pointer." (7.19.6.5, 2)  We're forgiving and allow a NULL pointer
+	 * even if a size larger than zero was specified.  At least NetBSD's
+	 * snprintf(3) does the same, as well as other versions of this file.
+	 * (Though some of these versions will write to a non-NULL buffer even
+	 * if a size of zero was specified, which violates the standard.)
+	 */
+	if (str == NULL && size != 0)
+		size = 0;
+
+	while (ch != '\0')
+		switch (state) {
+		case PRINT_S_DEFAULT:
+			if (ch == '%')
+				state = PRINT_S_FLAGS;
+			else
+				OUTCHAR(str, len, size, ch);
+			ch = *format++;
+			break;
+		case PRINT_S_FLAGS:
+			switch (ch) {
+			case '-':
+				flags |= PRINT_F_MINUS;
+				ch = *format++;
+				break;
+			case '+':
+				flags |= PRINT_F_PLUS;
+				ch = *format++;
+				break;
+			case ' ':
+				flags |= PRINT_F_SPACE;
+				ch = *format++;
+				break;
+			case '#':
+				flags |= PRINT_F_NUM;
+				ch = *format++;
+				break;
+			case '0':
+				flags |= PRINT_F_ZERO;
+				ch = *format++;
+				break;
+			case '\'':	/* SUSv2 flag (not in C99). */
+				flags |= PRINT_F_QUOTE;
+				ch = *format++;
+				break;
+			default:
+				state = PRINT_S_WIDTH;
+				break;
+			}
+			break;
+		case PRINT_S_WIDTH:
+			if (ISDIGIT(ch)) {
+				ch = CHARTOINT(ch);
+				if (width > (INT_MAX - ch) / 10) {
+					overflow = 1;
+					goto out;
+				}
+				width = 10 * width + ch;
+				ch = *format++;
+			} else if (ch == '*') {
+				/*
+				 * C99 says: "A negative field width argument is
+				 * taken as a `-' flag followed by a positive
+				 * field width." (7.19.6.1, 5)
+				 */
+				if ((width = va_arg(args, int)) < 0) {
+					flags |= PRINT_F_MINUS;
+					width = -width;
+				}
+				ch = *format++;
+				state = PRINT_S_DOT;
+			} else
+				state = PRINT_S_DOT;
+			break;
+		case PRINT_S_DOT:
+			if (ch == '.') {
+				state = PRINT_S_PRECISION;
+				ch = *format++;
+			} else
+				state = PRINT_S_MOD;
+			break;
+		case PRINT_S_PRECISION:
+			if (precision == -1)
+				precision = 0;
+			if (ISDIGIT(ch)) {
+				ch = CHARTOINT(ch);
+				if (precision > (INT_MAX - ch) / 10) {
+					overflow = 1;
+					goto out;
+				}
+				precision = 10 * precision + ch;
+				ch = *format++;
+			} else if (ch == '*') {
+				/*
+				 * C99 says: "A negative precision argument is
+				 * taken as if the precision were omitted."
+				 * (7.19.6.1, 5)
+				 */
+				if ((precision = va_arg(args, int)) < 0)
+					precision = -1;
+				ch = *format++;
+				state = PRINT_S_MOD;
+			} else
+				state = PRINT_S_MOD;
+			break;
+		case PRINT_S_MOD:
+			switch (ch) {
+			case 'h':
+				ch = *format++;
+				if (ch == 'h') {	/* It's a char. */
+					ch = *format++;
+					cflags = PRINT_C_CHAR;
+				} else
+					cflags = PRINT_C_SHORT;
+				break;
+			case 'l':
+				ch = *format++;
+				if (ch == 'l') {	/* It's a long long. */
+					ch = *format++;
+					cflags = PRINT_C_LLONG;
+				} else
+					cflags = PRINT_C_LONG;
+				break;
+			case 'L':
+				cflags = PRINT_C_LDOUBLE;
+				ch = *format++;
+				break;
+			case 'j':
+				cflags = PRINT_C_INTMAX;
+				ch = *format++;
+				break;
+			case 't':
+				cflags = PRINT_C_PTRDIFF;
+				ch = *format++;
+				break;
+			case 'z':
+				cflags = PRINT_C_SIZE;
+				ch = *format++;
+				break;
+			}
+			state = PRINT_S_CONV;
+			break;
+		case PRINT_S_CONV:
+			switch (ch) {
+			case 'd':
+				/* FALLTHROUGH */
+			case 'i':
+				switch (cflags) {
+				case PRINT_C_CHAR:
+					value = (signed char)va_arg(args, int);
+					break;
+				case PRINT_C_SHORT:
+					value = (short int)va_arg(args, int);
+					break;
+				case PRINT_C_LONG:
+					value = va_arg(args, long int);
+					break;
+				case PRINT_C_LLONG:
+					value = va_arg(args, LLONG);
+					break;
+				case PRINT_C_SIZE:
+					value = va_arg(args, SSIZE_T);
+					break;
+				case PRINT_C_INTMAX:
+					value = va_arg(args, INTMAX_T);
+					break;
+				case PRINT_C_PTRDIFF:
+					value = va_arg(args, PTRDIFF_T);
+					break;
+				default:
+					value = va_arg(args, int);
+					break;
+				}
+				fmtint(str, &len, size, value, 10, width,
+				    precision, flags);
+				break;
+			case 'X':
+				flags |= PRINT_F_UP;
+				/* FALLTHROUGH */
+			case 'x':
+				base = 16;
+				/* FALLTHROUGH */
+			case 'o':
+				if (base == 0)
+					base = 8;
+				/* FALLTHROUGH */
+			case 'u':
+				if (base == 0)
+					base = 10;
+				flags |= PRINT_F_UNSIGNED;
+				switch (cflags) {
+				case PRINT_C_CHAR:
+					value = (unsigned char)va_arg(args,
+					    unsigned int);
+					break;
+				case PRINT_C_SHORT:
+					value = (unsigned short int)va_arg(args,
+					    unsigned int);
+					break;
+				case PRINT_C_LONG:
+					value = va_arg(args, unsigned long int);
+					break;
+				case PRINT_C_LLONG:
+					value = va_arg(args, ULLONG);
+					break;
+				case PRINT_C_SIZE:
+					value = va_arg(args, size_t);
+					break;
+				case PRINT_C_INTMAX:
+					value = va_arg(args, UINTMAX_T);
+					break;
+				case PRINT_C_PTRDIFF:
+					value = va_arg(args, UPTRDIFF_T);
+					break;
+				default:
+					value = va_arg(args, unsigned int);
+					break;
+				}
+				fmtint(str, &len, size, value, base, width,
+				    precision, flags);
+				break;
+			case 'A':
+				/* Not yet supported, we'll use "%F". */
+				/* FALLTHROUGH */
+			case 'F':
+				flags |= PRINT_F_UP;
+				/* FALLTHROUGH */
+			case 'a':
+				/* Not yet supported, we'll use "%f". */
+				/* FALLTHROUGH */
+			case 'f':
+				if (cflags == PRINT_C_LDOUBLE)
+					fvalue = va_arg(args, LDOUBLE);
+				else
+					fvalue = va_arg(args, double);
+				fmtflt(str, &len, size, fvalue, width,
+				    precision, flags, &overflow);
+				if (overflow)
+					goto out;
+				break;
+			case 'E':
+				flags |= PRINT_F_UP;
+				/* FALLTHROUGH */
+			case 'e':
+				flags |= PRINT_F_TYPE_E;
+				if (cflags == PRINT_C_LDOUBLE)
+					fvalue = va_arg(args, LDOUBLE);
+				else
+					fvalue = va_arg(args, double);
+				fmtflt(str, &len, size, fvalue, width,
+				    precision, flags, &overflow);
+				if (overflow)
+					goto out;
+				break;
+			case 'G':
+				flags |= PRINT_F_UP;
+				/* FALLTHROUGH */
+			case 'g':
+				flags |= PRINT_F_TYPE_G;
+				if (cflags == PRINT_C_LDOUBLE)
+					fvalue = va_arg(args, LDOUBLE);
+				else
+					fvalue = va_arg(args, double);
+				/*
+				 * If the precision is zero, it is treated as
+				 * one (cf. C99: 7.19.6.1, 8).
+				 */
+				if (precision == 0)
+					precision = 1;
+				fmtflt(str, &len, size, fvalue, width,
+				    precision, flags, &overflow);
+				if (overflow)
+					goto out;
+				break;
+			case 'c':
+				cvalue = va_arg(args, int);
+				OUTCHAR(str, len, size, cvalue);
+				break;
+			case 's':
+				strvalue = va_arg(args, char *);
+				fmtstr(str, &len, size, strvalue, width,
+				    precision, flags);
+				break;
+			case 'p':
+				/*
+				 * C99 says: "The value of the pointer is
+				 * converted to a sequence of printing
+				 * characters, in an implementation-defined
+				 * manner." (C99: 7.19.6.1, 8)
+				 */
+				if ((strvalue = va_arg(args, void *)) == NULL)
+					/*
+					 * We use the glibc format.  BSD prints
+					 * "0x0", SysV "0".
+					 */
+					fmtstr(str, &len, size, "(nil)", width,
+					    -1, flags);
+				else {
+					/*
+					 * We use the BSD/glibc format.  SysV
+					 * omits the "0x" prefix (which we emit
+					 * using the PRINT_F_NUM flag).
+					 */
+					flags |= PRINT_F_NUM;
+					flags |= PRINT_F_UNSIGNED;
+					fmtint(str, &len, size,
+					    (UINTPTR_T)strvalue, 16, width,
+					    precision, flags);
+				}
+				break;
+			case 'n':
+				switch (cflags) {
+				case PRINT_C_CHAR:
+					charptr = va_arg(args, signed char *);
+					*charptr = len;
+					break;
+				case PRINT_C_SHORT:
+					shortptr = va_arg(args, short int *);
+					*shortptr = len;
+					break;
+				case PRINT_C_LONG:
+					longptr = va_arg(args, long int *);
+					*longptr = len;
+					break;
+				case PRINT_C_LLONG:
+					llongptr = va_arg(args, LLONG *);
+					*llongptr = len;
+					break;
+				case PRINT_C_SIZE:
+					/*
+					 * C99 says that with the "z" length
+					 * modifier, "a following `n' conversion
+					 * specifier applies to a pointer to a
+					 * signed integer type corresponding to
+					 * size_t argument." (7.19.6.1, 7)
+					 */
+					sizeptr = va_arg(args, SSIZE_T *);
+					*sizeptr = len;
+					break;
+				case PRINT_C_INTMAX:
+					intmaxptr = va_arg(args, INTMAX_T *);
+					*intmaxptr = len;
+					break;
+				case PRINT_C_PTRDIFF:
+					ptrdiffptr = va_arg(args, PTRDIFF_T *);
+					*ptrdiffptr = len;
+					break;
+				default:
+					intptr = va_arg(args, int *);
+					*intptr = len;
+					break;
+				}
+				break;
+			case '%':	/* Print a "%" character verbatim. */
+				OUTCHAR(str, len, size, ch);
+				break;
+			default:	/* Skip other characters. */
+				break;
+			}
+			ch = *format++;
+			state = PRINT_S_DEFAULT;
+			base = cflags = flags = width = 0;
+			precision = -1;
+			break;
+		}
+out:
+	if (len < size)
+		str[len] = '\0';
+	else if (size > 0)
+		str[size - 1] = '\0';
+
+	if (overflow || len >= INT_MAX) {
+		errno = overflow ? EOVERFLOW : ERANGE;
+		return -1;
+	}
+	return (int)len;
+}
+
+static void
+fmtstr(char *str, size_t *len, size_t size, const char *value, int width,
+       int precision, int flags)
+{
+	int padlen, strln;	/* Amount to pad. */
+	int noprecision = (precision == -1);
+
+	if (value == NULL)	/* We're forgiving. */
+		value = "(null)";
+
+	/* If a precision was specified, don't read the string past it. */
+	for (strln = 0; value[strln] != '\0' &&
+	    (noprecision || strln < precision); strln++)
+		continue;
+
+	if ((padlen = width - strln) < 0)
+		padlen = 0;
+	if (flags & PRINT_F_MINUS)	/* Left justify. */
+		padlen = -padlen;
+
+	while (padlen > 0) {	/* Leading spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		padlen--;
+	}
+	while (*value != '\0' && (noprecision || precision-- > 0)) {
+		OUTCHAR(str, *len, size, *value);
+		value++;
+	}
+	while (padlen < 0) {	/* Trailing spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		padlen++;
+	}
+}
+
+static void
+fmtint(char *str, size_t *len, size_t size, INTMAX_T value, int base, int width,
+       int precision, int flags)
+{
+	UINTMAX_T uvalue;
+	char iconvert[MAX_CONVERT_LENGTH];
+	char sign = 0;
+	char hexprefix = 0;
+	int spadlen = 0;	/* Amount to space pad. */
+	int zpadlen = 0;	/* Amount to zero pad. */
+	int pos;
+	int separators = (flags & PRINT_F_QUOTE);
+	int noprecision = (precision == -1);
+
+	if (flags & PRINT_F_UNSIGNED)
+		uvalue = value;
+	else {
+		uvalue = (value >= 0) ? value : -value;
+		if (value < 0)
+			sign = '-';
+		else if (flags & PRINT_F_PLUS)	/* Do a sign. */
+			sign = '+';
+		else if (flags & PRINT_F_SPACE)
+			sign = ' ';
+	}
+
+	pos = convert(uvalue, iconvert, sizeof(iconvert), base,
+	    flags & PRINT_F_UP);
+
+	if (flags & PRINT_F_NUM && uvalue != 0) {
+		/*
+		 * C99 says: "The result is converted to an `alternative form'.
+		 * For `o' conversion, it increases the precision, if and only
+		 * if necessary, to force the first digit of the result to be a
+		 * zero (if the value and precision are both 0, a single 0 is
+		 * printed).  For `x' (or `X') conversion, a nonzero result has
+		 * `0x' (or `0X') prefixed to it." (7.19.6.1, 6)
+		 */
+		switch (base) {
+		case 8:
+			if (precision <= pos)
+				precision = pos + 1;
+			break;
+		case 16:
+			hexprefix = (flags & PRINT_F_UP) ? 'X' : 'x';
+			break;
+		}
+	}
+
+	if (separators)	/* Get the number of group separators we'll print. */
+		separators = getnumsep(pos);
+
+	zpadlen = precision - pos - separators;
+	spadlen = width                         /* Minimum field width. */
+	    - separators                        /* Number of separators. */
+	    - MAX(precision, pos)               /* Number of integer digits. */
+	    - ((sign != 0) ? 1 : 0)             /* Will we print a sign? */
+	    - ((hexprefix != 0) ? 2 : 0);       /* Will we print a prefix? */
+
+	if (zpadlen < 0)
+		zpadlen = 0;
+	if (spadlen < 0)
+		spadlen = 0;
+
+	/*
+	 * C99 says: "If the `0' and `-' flags both appear, the `0' flag is
+	 * ignored.  For `d', `i', `o', `u', `x', and `X' conversions, if a
+	 * precision is specified, the `0' flag is ignored." (7.19.6.1, 6)
+	 */
+	if (flags & PRINT_F_MINUS)	/* Left justify. */
+		spadlen = -spadlen;
+	else if (flags & PRINT_F_ZERO && noprecision) {
+		zpadlen += spadlen;
+		spadlen = 0;
+	}
+	while (spadlen > 0) {	/* Leading spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		spadlen--;
+	}
+	if (sign != 0)	/* Sign. */
+		OUTCHAR(str, *len, size, sign);
+	if (hexprefix != 0) {	/* A "0x" or "0X" prefix. */
+		OUTCHAR(str, *len, size, '0');
+		OUTCHAR(str, *len, size, hexprefix);
+	}
+	while (zpadlen > 0) {	/* Leading zeros. */
+		OUTCHAR(str, *len, size, '0');
+		zpadlen--;
+	}
+	while (pos > 0) {	/* The actual digits. */
+		pos--;
+		OUTCHAR(str, *len, size, iconvert[pos]);
+		if (separators > 0 && pos > 0 && pos % 3 == 0)
+			printsep(str, len, size);
+	}
+	while (spadlen < 0) {	/* Trailing spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		spadlen++;
+	}
+}
+
+static void
+fmtflt(char *str, size_t *len, size_t size, LDOUBLE fvalue, int width,
+       int precision, int flags, int *overflow)
+{
+	LDOUBLE ufvalue;
+	UINTMAX_T intpart;
+	UINTMAX_T fracpart;
+	UINTMAX_T mask;
+	const char *infnan = NULL;
+	char iconvert[MAX_CONVERT_LENGTH];
+	char fconvert[MAX_CONVERT_LENGTH];
+	char econvert[4];	/* "e-12" (without nul-termination). */
+	char esign = 0;
+	char sign = 0;
+	int leadfraczeros = 0;
+	int exponent = 0;
+	int emitpoint = 0;
+	int omitzeros = 0;
+	int omitcount = 0;
+	int padlen = 0;
+	int epos = 0;
+	int fpos = 0;
+	int ipos = 0;
+	int separators = (flags & PRINT_F_QUOTE);
+	int estyle = (flags & PRINT_F_TYPE_E);
+#if HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT
+	struct lconv *lc = localeconv();
+#endif	/* HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT */
+
+	/*
+	 * AIX' man page says the default is 0, but C99 and at least Solaris'
+	 * and NetBSD's man pages say the default is 6, and sprintf(3) on AIX
+	 * defaults to 6.
+	 */
+	if (precision == -1)
+		precision = 6;
+
+	if (fvalue < 0.0)
+		sign = '-';
+	else if (flags & PRINT_F_PLUS)	/* Do a sign. */
+		sign = '+';
+	else if (flags & PRINT_F_SPACE)
+		sign = ' ';
+
+	if (ISNAN(fvalue))
+		infnan = (flags & PRINT_F_UP) ? "NAN" : "nan";
+	else if (ISINF(fvalue))
+		infnan = (flags & PRINT_F_UP) ? "INF" : "inf";
+
+	if (infnan != NULL) {
+		if (sign != 0)
+			iconvert[ipos++] = sign;
+		while (*infnan != '\0')
+			iconvert[ipos++] = *infnan++;
+		fmtstr(str, len, size, iconvert, width, ipos, flags);
+		return;
+	}
+
+	/* "%e" (or "%E") or "%g" (or "%G") conversion. */
+	if (flags & PRINT_F_TYPE_E || flags & PRINT_F_TYPE_G) {
+		if (flags & PRINT_F_TYPE_G) {
+			/*
+			 * For "%g" (and "%G") conversions, the precision
+			 * specifies the number of significant digits, which
+			 * includes the digits in the integer part.  The
+			 * conversion will or will not be using "e-style" (like
+			 * "%e" or "%E" conversions) depending on the precision
+			 * and on the exponent.  However, the exponent can be
+			 * affected by rounding the converted value, so we'll
+			 * leave this decision for later.  Until then, we'll
+			 * assume that we're going to do an "e-style" conversion
+			 * (in order to get the exponent calculated).  For
+			 * "e-style", the precision must be decremented by one.
+			 */
+			precision--;
+			/*
+			 * For "%g" (and "%G") conversions, trailing zeros are
+			 * removed from the fractional portion of the result
+			 * unless the "#" flag was specified.
+			 */
+			if (!(flags & PRINT_F_NUM))
+				omitzeros = 1;
+		}
+		exponent = getexponent(fvalue);
+		estyle = 1;
+	}
+
+again:
+	/*
+	 * Sorry, we only support 9, 19, or 38 digits (that is, the number of
+	 * digits of the 32-bit, the 64-bit, or the 128-bit UINTMAX_MAX value
+	 * minus one) past the decimal point due to our conversion method.
+	 */
+	switch (sizeof(UINTMAX_T)) {
+	case 16:
+		if (precision > 38)
+			precision = 38;
+		break;
+	case 8:
+		if (precision > 19)
+			precision = 19;
+		break;
+	default:
+		if (precision > 9)
+			precision = 9;
+		break;
+	}
+
+	ufvalue = (fvalue >= 0.0) ? fvalue : -fvalue;
+	if (estyle)	/* We want exactly one integer digit. */
+		ufvalue /= mypow10(exponent);
+
+	if ((intpart = cast(ufvalue)) == UINTMAX_MAX) {
+		*overflow = 1;
+		return;
+	}
+
+	/*
+	 * Factor of ten with the number of digits needed for the fractional
+	 * part.  For example, if the precision is 3, the mask will be 1000.
+	 */
+	mask = mypow10(precision);
+	/*
+	 * We "cheat" by converting the fractional part to integer by
+	 * multiplying by a factor of ten.
+	 */
+	if ((fracpart = myround(mask * (ufvalue - intpart))) >= mask) {
+		/*
+		 * For example, ufvalue = 2.99962, intpart = 2, and mask = 1000
+		 * (because precision = 3).  Now, myround(1000 * 0.99962) will
+		 * return 1000.  So, the integer part must be incremented by one
+		 * and the fractional part must be set to zero.
+		 */
+		intpart++;
+		fracpart = 0;
+		if (estyle && intpart == 10) {
+			/*
+			 * The value was rounded up to ten, but we only want one
+			 * integer digit if using "e-style".  So, the integer
+			 * part must be set to one and the exponent must be
+			 * incremented by one.
+			 */
+			intpart = 1;
+			exponent++;
+		}
+	}
+
+	/*
+	 * Now that we know the real exponent, we can check whether or not to
+	 * use "e-style" for "%g" (and "%G") conversions.  If we don't need
+	 * "e-style", the precision must be adjusted and the integer and
+	 * fractional parts must be recalculated from the original value.
+	 *
+	 * C99 says: "Let P equal the precision if nonzero, 6 if the precision
+	 * is omitted, or 1 if the precision is zero.  Then, if a conversion
+	 * with style `E' would have an exponent of X:
+	 *
+	 * - if P > X >= -4, the conversion is with style `f' (or `F') and
+	 *   precision P - (X + 1).
+	 *
+	 * - otherwise, the conversion is with style `e' (or `E') and precision
+	 *   P - 1." (7.19.6.1, 8)
+	 *
+	 * Note that we had decremented the precision by one.
+	 */
+	if (flags & PRINT_F_TYPE_G && estyle &&
+	    precision + 1 > exponent && exponent >= -4) {
+		precision -= exponent;
+		estyle = 0;
+		goto again;
+	}
+
+	if (estyle) {
+		if (exponent < 0) {
+			exponent = -exponent;
+			esign = '-';
+		} else
+			esign = '+';
+
+		/*
+		 * Convert the exponent.  The sizeof(econvert) is 4.  So, the
+		 * econvert buffer can hold e.g. "e+99" and "e-99".  We don't
+		 * support an exponent which contains more than two digits.
+		 * Therefore, the following stores are safe.
+		 */
+		epos = convert(exponent, econvert, 2, 10, 0);
+		/*
+		 * C99 says: "The exponent always contains at least two digits,
+		 * and only as many more digits as necessary to represent the
+		 * exponent." (7.19.6.1, 8)
+		 */
+		if (epos == 1)
+			econvert[epos++] = '0';
+		econvert[epos++] = esign;
+		econvert[epos++] = (flags & PRINT_F_UP) ? 'E' : 'e';
+	}
+
+	/* Convert the integer part and the fractional part. */
+	ipos = convert(intpart, iconvert, sizeof(iconvert), 10, 0);
+	if (fracpart != 0)	/* convert() would return 1 if fracpart == 0. */
+		fpos = convert(fracpart, fconvert, sizeof(fconvert), 10, 0);
+
+	leadfraczeros = precision - fpos;
+
+	if (omitzeros) {
+		if (fpos > 0)	/* Omit trailing fractional part zeros. */
+			while (omitcount < fpos && fconvert[omitcount] == '0')
+				omitcount++;
+		else {	/* The fractional part is zero, omit it completely. */
+			omitcount = precision;
+			leadfraczeros = 0;
+		}
+		precision -= omitcount;
+	}
+
+	/*
+	 * Print a decimal point if either the fractional part is non-zero
+	 * and/or the "#" flag was specified.
+	 */
+	if (precision > 0 || flags & PRINT_F_NUM)
+		emitpoint = 1;
+	if (separators)	/* Get the number of group separators we'll print. */
+		separators = getnumsep(ipos);
+
+	padlen = width                  /* Minimum field width. */
+	    - ipos                      /* Number of integer digits. */
+	    - epos                      /* Number of exponent characters. */
+	    - precision                 /* Number of fractional digits. */
+	    - separators                /* Number of group separators. */
+	    - (emitpoint ? 1 : 0)       /* Will we print a decimal point? */
+	    - ((sign != 0) ? 1 : 0);    /* Will we print a sign character? */
+
+	if (padlen < 0)
+		padlen = 0;
+
+	/*
+	 * C99 says: "If the `0' and `-' flags both appear, the `0' flag is
+	 * ignored." (7.19.6.1, 6)
+	 */
+	if (flags & PRINT_F_MINUS)	/* Left justifty. */
+		padlen = -padlen;
+	else if (flags & PRINT_F_ZERO && padlen > 0) {
+		if (sign != 0) {	/* Sign. */
+			OUTCHAR(str, *len, size, sign);
+			sign = 0;
+		}
+		while (padlen > 0) {	/* Leading zeros. */
+			OUTCHAR(str, *len, size, '0');
+			padlen--;
+		}
+	}
+	while (padlen > 0) {	/* Leading spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		padlen--;
+	}
+	if (sign != 0)	/* Sign. */
+		OUTCHAR(str, *len, size, sign);
+	while (ipos > 0) {	/* Integer part. */
+		ipos--;
+		OUTCHAR(str, *len, size, iconvert[ipos]);
+		if (separators > 0 && ipos > 0 && ipos % 3 == 0)
+			printsep(str, len, size);
+	}
+	if (emitpoint) {	/* Decimal point. */
+#if HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT
+		if (lc->decimal_point != NULL && *lc->decimal_point != '\0')
+			OUTCHAR(str, *len, size, *lc->decimal_point);
+		else	/* We'll always print some decimal point character. */
+#endif	/* HAVE_LOCALECONV && HAVE_LCONV_DECIMAL_POINT */
+			OUTCHAR(str, *len, size, '.');
+	}
+	while (leadfraczeros > 0) {	/* Leading fractional part zeros. */
+		OUTCHAR(str, *len, size, '0');
+		leadfraczeros--;
+	}
+	while (fpos > omitcount) {	/* The remaining fractional part. */
+		fpos--;
+		OUTCHAR(str, *len, size, fconvert[fpos]);
+	}
+	while (epos > 0) {	/* Exponent. */
+		epos--;
+		OUTCHAR(str, *len, size, econvert[epos]);
+	}
+	while (padlen < 0) {	/* Trailing spaces. */
+		OUTCHAR(str, *len, size, ' ');
+		padlen++;
+	}
+}
+
+static void
+printsep(char *str, size_t *len, size_t size)
+{
+#if HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP
+	struct lconv *lc = localeconv();
+	int i;
+
+	if (lc->thousands_sep != NULL)
+		for (i = 0; lc->thousands_sep[i] != '\0'; i++)
+			OUTCHAR(str, *len, size, lc->thousands_sep[i]);
+	else
+#endif	/* HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP */
+		OUTCHAR(str, *len, size, ',');
+}
+
+static int
+getnumsep(int digits)
+{
+	int separators = (digits - ((digits % 3 == 0) ? 1 : 0)) / 3;
+#if HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP
+	int strln;
+	struct lconv *lc = localeconv();
+
+	/* We support an arbitrary separator length (including zero). */
+	if (lc->thousands_sep != NULL) {
+		for (strln = 0; lc->thousands_sep[strln] != '\0'; strln++)
+			continue;
+		separators *= strln;
+	}
+#endif	/* HAVE_LOCALECONV && HAVE_LCONV_THOUSANDS_SEP */
+	return separators;
+}
+
+static int
+getexponent(LDOUBLE value)
+{
+	LDOUBLE tmp = (value >= 0.0) ? value : -value;
+	int exponent = 0;
+
+	/*
+	 * We check for 99 > exponent > -99 in order to work around possible
+	 * endless loops which could happen (at least) in the second loop (at
+	 * least) if we're called with an infinite value.  However, we checked
+	 * for infinity before calling this function using our ISINF() macro, so
+	 * this might be somewhat paranoid.
+	 */
+	while (tmp < 1.0 && tmp > 0.0 && --exponent > -99)
+		tmp *= 10;
+	while (tmp >= 10.0 && ++exponent < 99)
+		tmp /= 10;
+
+	return exponent;
+}
+
+static int
+convert(UINTMAX_T value, char *buf, size_t size, int base, int caps)
+{
+	const char *digits = caps ? "0123456789ABCDEF" : "0123456789abcdef";
+	size_t pos = 0;
+
+	/* We return an unterminated buffer with the digits in reverse order. */
+	do {
+		buf[pos++] = digits[value % base];
+		value /= base;
+	} while (value != 0 && pos < size);
+
+	return (int)pos;
+}
+
+static UINTMAX_T
+cast(LDOUBLE value)
+{
+	UINTMAX_T result;
+
+	/*
+	 * We check for ">=" and not for ">" because if UINTMAX_MAX cannot be
+	 * represented exactly as an LDOUBLE value (but is less than LDBL_MAX),
+	 * it may be increased to the nearest higher representable value for the
+	 * comparison (cf. C99: 6.3.1.4, 2).  It might then equal the LDOUBLE
+	 * value although converting the latter to UINTMAX_T would overflow.
+	 */
+	if (value >= UINTMAX_MAX)
+		return UINTMAX_MAX;
+
+	result = value;
+	/*
+	 * At least on NetBSD/sparc64 3.0.2 and 4.99.30, casting long double to
+	 * an integer type converts e.g. 1.9 to 2 instead of 1 (which violates
+	 * the standard).  Sigh.
+	 */
+	return (result <= value) ? result : result - 1;
+}
+
+static UINTMAX_T
+myround(LDOUBLE value)
+{
+	UINTMAX_T intpart = cast(value);
+
+	return ((value -= intpart) < 0.5) ? intpart : intpart + 1;
+}
+
+static LDOUBLE
+mypow10(int exponent)
+{
+	LDOUBLE result = 1;
+
+	while (exponent > 0) {
+		result *= 10;
+		exponent--;
+	}
+	while (exponent < 0) {
+		result /= 10;
+		exponent++;
+	}
+	return result;
+}
+#endif	/* HW_WANT_RPL_VSNPRINTF */
+
+#if HW_WANT_RPL_VASPRINTF
+#if NEED_MYMEMCPY
+void *
+mymemcpy(void *dst, void *src, size_t len)
+{
+	const char *from = src;
+	char *to = dst;
+
+	/* No need for optimization, we use this only to replace va_copy(3). */
+	while (len-- > 0)
+		*to++ = *from++;
+	return dst;
+}
+#endif	/* NEED_MYMEMCPY */
+
+int
+rpl_vasprintf(char **ret, const char *format, va_list ap);
+
+int
+rpl_vasprintf(char **ret, const char *format, va_list ap)
+{
+	size_t size;
+	int len;
+	va_list aq;
+
+	VA_COPY(aq, ap);
+	len = vsnprintf(NULL, 0, format, aq);
+	VA_END_COPY(aq);
+	if (len < 0 || (*ret = malloc(size = len + 1)) == NULL)
+		return -1;
+	return vsnprintf(*ret, size, format, ap);
+}
+#endif	/* HW_WANT_RPL_VASPRINTF */
+
+#if HW_WANT_RPL_SNPRINTF
+#if HAVE_STDARG_H
+int
+rpl_snprintf(char *str, size_t size, const char *format, ...);
+
+int
+rpl_snprintf(char *str, size_t size, const char *format, ...)
+#else
+int
+rpl_snprintf(va_alist) va_dcl
+#endif	/* HAVE_STDARG_H */
+{
+#if !HAVE_STDARG_H
+	char *str;
+	size_t size;
+	char *format;
+#endif	/* HAVE_STDARG_H */
+	va_list ap;
+	int len;
+
+	VA_START(ap, format);
+	VA_SHIFT(ap, str, char *);
+	VA_SHIFT(ap, size, size_t);
+	VA_SHIFT(ap, format, const char *);
+	len = vsnprintf(str, size, format, ap);
+	va_end(ap);
+	return len;
+}
+#endif	/* HW_WANT_RPL_SNPRINTF */
+
+#if HW_WANT_RPL_ASPRINTF
+#if HAVE_STDARG_H
+int
+rpl_asprintf(char **ret, const char *format, ...);
+
+int
+rpl_asprintf(char **ret, const char *format, ...)
+#else
+int
+rpl_asprintf(va_alist) va_dcl
+#endif	/* HAVE_STDARG_H */
+{
+#if !HAVE_STDARG_H
+	char **ret;
+	char *format;
+#endif	/* HAVE_STDARG_H */
+	va_list ap;
+	int len;
+
+	VA_START(ap, format);
+	VA_SHIFT(ap, ret, char **);
+	VA_SHIFT(ap, format, const char *);
+	len = vasprintf(ret, format, ap);
+	va_end(ap);
+	return len;
+}
+#endif	/* HW_WANT_RPL_ASPRINTF */
+#else	/* Dummy declaration to avoid empty translation unit warnings. */
+int main(void);
+#endif	/* HW_WANT_RPL_SNPRINTF || HW_WANT_RPL_VSNPRINTF || HW_WANT_RPL_ASPRINTF || [...] */
+
+#if TEST_SNPRINTF
+int
+main(void)
+{
+	const char *float_fmt[] = {
+		/* "%E" and "%e" formats. */
+#if HAVE_LONG_LONG_INT && !OS_BSD && !OS_IRIX
+		"%.16e",
+		"%22.16e",
+		"%022.16e",
+		"%-22.16e",
+		"%#+'022.16e",
+#endif	/* HAVE_LONG_LONG_INT && !OS_BSD && !OS_IRIX */
+		"foo|%#+0123.9E|bar",
+		"%-123.9e",
+		"%123.9e",
+		"%+23.9e",
+		"%+05.8e",
+		"%-05.8e",
+		"%05.8e",
+		"%+5.8e",
+		"%-5.8e",
+		"% 5.8e",
+		"%5.8e",
+		"%+4.9e",
+#if !OS_LINUX	/* glibc sometimes gets these wrong. */
+		"%+#010.0e",
+		"%#10.1e",
+		"%10.5e",
+		"% 10.5e",
+		"%5.0e",
+		"%5.e",
+		"%#5.0e",
+		"%#5.e",
+		"%3.2e",
+		"%3.1e",
+		"%-1.5e",
+		"%1.5e",
+		"%01.3e",
+		"%1.e",
+		"%.1e",
+		"%#.0e",
+		"%+.0e",
+		"% .0e",
+		"%.0e",
+		"%#.e",
+		"%+.e",
+		"% .e",
+		"%.e",
+		"%4e",
+		"%e",
+		"%E",
+#endif	/* !OS_LINUX */
+		/* "%F" and "%f" formats. */
+#if !OS_BSD && !OS_IRIX
+		"% '022f",
+		"%+'022f",
+		"%-'22f",
+		"%'22f",
+#if HAVE_LONG_LONG_INT
+		"%.16f",
+		"%22.16f",
+		"%022.16f",
+		"%-22.16f",
+		"%#+'022.16f",
+#endif	/* HAVE_LONG_LONG_INT */
+#endif	/* !OS_BSD && !OS_IRIX */
+		"foo|%#+0123.9F|bar",
+		"%-123.9f",
+		"%123.9f",
+		"%+23.9f",
+		"%+#010.0f",
+		"%#10.1f",
+		"%10.5f",
+		"% 10.5f",
+		"%+05.8f",
+		"%-05.8f",
+		"%05.8f",
+		"%+5.8f",
+		"%-5.8f",
+		"% 5.8f",
+		"%5.8f",
+		"%5.0f",
+		"%5.f",
+		"%#5.0f",
+		"%#5.f",
+		"%+4.9f",
+		"%3.2f",
+		"%3.1f",
+		"%-1.5f",
+		"%1.5f",
+		"%01.3f",
+		"%1.f",
+		"%.1f",
+		"%#.0f",
+		"%+.0f",
+		"% .0f",
+		"%.0f",
+		"%#.f",
+		"%+.f",
+		"% .f",
+		"%.f",
+		"%4f",
+		"%f",
+		"%F",
+		/* "%G" and "%g" formats. */
+#if !OS_BSD && !OS_IRIX && !OS_LINUX
+		"% '022g",
+		"%+'022g",
+		"%-'22g",
+		"%'22g",
+#if HAVE_LONG_LONG_INT
+		"%.16g",
+		"%22.16g",
+		"%022.16g",
+		"%-22.16g",
+		"%#+'022.16g",
+#endif	/* HAVE_LONG_LONG_INT */
+#endif	/* !OS_BSD && !OS_IRIX && !OS_LINUX */
+		"foo|%#+0123.9G|bar",
+		"%-123.9g",
+		"%123.9g",
+		"%+23.9g",
+		"%+05.8g",
+		"%-05.8g",
+		"%05.8g",
+		"%+5.8g",
+		"%-5.8g",
+		"% 5.8g",
+		"%5.8g",
+		"%+4.9g",
+#if !OS_LINUX	/* glibc sometimes gets these wrong. */
+		"%+#010.0g",
+		"%#10.1g",
+		"%10.5g",
+		"% 10.5g",
+		"%5.0g",
+		"%5.g",
+		"%#5.0g",
+		"%#5.g",
+		"%3.2g",
+		"%3.1g",
+		"%-1.5g",
+		"%1.5g",
+		"%01.3g",
+		"%1.g",
+		"%.1g",
+		"%#.0g",
+		"%+.0g",
+		"% .0g",
+		"%.0g",
+		"%#.g",
+		"%+.g",
+		"% .g",
+		"%.g",
+		"%4g",
+		"%g",
+		"%G",
+#endif	/* !OS_LINUX */
+		NULL
+	};
+	double float_val[] = {
+		-4.136,
+		-134.52,
+		-5.04030201,
+		-3410.01234,
+		-999999.999999,
+		-913450.29876,
+		-913450.2,
+		-91345.2,
+		-9134.2,
+		-913.2,
+		-91.2,
+		-9.2,
+		-9.9,
+		4.136,
+		134.52,
+		5.04030201,
+		3410.01234,
+		999999.999999,
+		913450.29876,
+		913450.2,
+		91345.2,
+		9134.2,
+		913.2,
+		91.2,
+		9.2,
+		9.9,
+		9.96,
+		9.996,
+		9.9996,
+		9.99996,
+		9.999996,
+		9.9999996,
+		9.99999996,
+		0.99999996,
+		0.99999999,
+		0.09999999,
+		0.00999999,
+		0.00099999,
+		0.00009999,
+		0.00000999,
+		0.00000099,
+		0.00000009,
+		0.00000001,
+		0.0000001,
+		0.000001,
+		0.00001,
+		0.0001,
+		0.001,
+		0.01,
+		0.1,
+		1.0,
+		1.5,
+		-1.5,
+		-1.0,
+		-0.1,
+#if !OS_BSD	/* BSD sometimes gets these wrong. */
+#ifdef INFINITY
+		INFINITY,
+		-INFINITY,
+#endif	/* defined(INFINITY) */
+#ifdef NAN
+		NAN,
+#endif	/* defined(NAN) */
+#endif	/* !OS_BSD */
+		0
+	};
+	const char *long_fmt[] = {
+		"foo|%0123ld|bar",
+#if !OS_IRIX
+		"% '0123ld",
+		"%+'0123ld",
+		"%-'123ld",
+		"%'123ld",
+#endif	/* !OS_IRiX */
+		"%123.9ld",
+		"% 123.9ld",
+		"%+123.9ld",
+		"%-123.9ld",
+		"%0123ld",
+		"% 0123ld",
+		"%+0123ld",
+		"%-0123ld",
+		"%10.5ld",
+		"% 10.5ld",
+		"%+10.5ld",
+		"%-10.5ld",
+		"%010ld",
+		"% 010ld",
+		"%+010ld",
+		"%-010ld",
+		"%4.2ld",
+		"% 4.2ld",
+		"%+4.2ld",
+		"%-4.2ld",
+		"%04ld",
+		"% 04ld",
+		"%+04ld",
+		"%-04ld",
+		"%5.5ld",
+		"%+22.33ld",
+		"%01.3ld",
+		"%1.5ld",
+		"%-1.5ld",
+		"%44ld",
+		"%4ld",
+		"%4.0ld",
+		"%4.ld",
+		"%.44ld",
+		"%.4ld",
+		"%.0ld",
+		"%.ld",
+		"%ld",
+		NULL
+	};
+	long int long_val[] = {
+#ifdef LONG_MAX
+		LONG_MAX,
+#endif	/* LONG_MAX */
+#ifdef LONG_MIN
+		LONG_MIN,
+#endif	/* LONG_MIN */
+		-91340,
+		91340,
+		341,
+		134,
+		0203,
+		-1,
+		1,
+		0
+	};
+	const char *ulong_fmt[] = {
+		/* "%u" formats. */
+		"foo|%0123lu|bar",
+#if !OS_IRIX
+		"% '0123lu",
+		"%+'0123lu",
+		"%-'123lu",
+		"%'123lu",
+#endif	/* !OS_IRiX */
+		"%123.9lu",
+		"% 123.9lu",
+		"%+123.9lu",
+		"%-123.9lu",
+		"%0123lu",
+		"% 0123lu",
+		"%+0123lu",
+		"%-0123lu",
+		"%5.5lu",
+		"%+22.33lu",
+		"%01.3lu",
+		"%1.5lu",
+		"%-1.5lu",
+		"%44lu",
+		"%lu",
+		/* "%o" formats. */
+		"foo|%#0123lo|bar",
+		"%#123.9lo",
+		"%# 123.9lo",
+		"%#+123.9lo",
+		"%#-123.9lo",
+		"%#0123lo",
+		"%# 0123lo",
+		"%#+0123lo",
+		"%#-0123lo",
+		"%#5.5lo",
+		"%#+22.33lo",
+		"%#01.3lo",
+		"%#1.5lo",
+		"%#-1.5lo",
+		"%#44lo",
+		"%#lo",
+		"%123.9lo",
+		"% 123.9lo",
+		"%+123.9lo",
+		"%-123.9lo",
+		"%0123lo",
+		"% 0123lo",
+		"%+0123lo",
+		"%-0123lo",
+		"%5.5lo",
+		"%+22.33lo",
+		"%01.3lo",
+		"%1.5lo",
+		"%-1.5lo",
+		"%44lo",
+		"%lo",
+		/* "%X" and "%x" formats. */
+		"foo|%#0123lX|bar",
+		"%#123.9lx",
+		"%# 123.9lx",
+		"%#+123.9lx",
+		"%#-123.9lx",
+		"%#0123lx",
+		"%# 0123lx",
+		"%#+0123lx",
+		"%#-0123lx",
+		"%#5.5lx",
+		"%#+22.33lx",
+		"%#01.3lx",
+		"%#1.5lx",
+		"%#-1.5lx",
+		"%#44lx",
+		"%#lx",
+		"%#lX",
+		"%123.9lx",
+		"% 123.9lx",
+		"%+123.9lx",
+		"%-123.9lx",
+		"%0123lx",
+		"% 0123lx",
+		"%+0123lx",
+		"%-0123lx",
+		"%5.5lx",
+		"%+22.33lx",
+		"%01.3lx",
+		"%1.5lx",
+		"%-1.5lx",
+		"%44lx",
+		"%lx",
+		"%lX",
+		NULL
+	};
+	unsigned long int ulong_val[] = {
+#ifdef ULONG_MAX
+		ULONG_MAX,
+#endif	/* ULONG_MAX */
+		91340,
+		341,
+		134,
+		0203,
+		1,
+		0
+	};
+	const char *llong_fmt[] = {
+		"foo|%0123lld|bar",
+		"%123.9lld",
+		"% 123.9lld",
+		"%+123.9lld",
+		"%-123.9lld",
+		"%0123lld",
+		"% 0123lld",
+		"%+0123lld",
+		"%-0123lld",
+		"%5.5lld",
+		"%+22.33lld",
+		"%01.3lld",
+		"%1.5lld",
+		"%-1.5lld",
+		"%44lld",
+		"%lld",
+		NULL
+	};
+	LLONG llong_val[] = {
+#ifdef LLONG_MAX
+		LLONG_MAX,
+#endif	/* LLONG_MAX */
+#ifdef LLONG_MIN
+		LLONG_MIN,
+#endif	/* LLONG_MIN */
+		-91340,
+		91340,
+		341,
+		134,
+		0203,
+		-1,
+		1,
+		0
+	};
+	const char *string_fmt[] = {
+		"foo|%10.10s|bar",
+		"%-10.10s",
+		"%10.10s",
+		"%10.5s",
+		"%5.10s",
+		"%10.1s",
+		"%1.10s",
+		"%10.0s",
+		"%0.10s",
+		"%-42.5s",
+		"%2.s",
+		"%.10s",
+		"%.1s",
+		"%.0s",
+		"%.s",
+		"%4s",
+		"%s",
+		NULL
+	};
+	const char *string_val[] = {
+		"Hello",
+		"Hello, world!",
+		"Sound check: One, two, three.",
+		"This string is a little longer than the other strings.",
+		"1",
+		"",
+		NULL
+	};
+#if !OS_SYSV	/* SysV uses a different format than we do. */
+	const char *pointer_fmt[] = {
+		"foo|%p|bar",
+		"%42p",
+		"%p",
+		NULL
+	};
+	const char *pointer_val[] = {
+		*pointer_fmt,
+		*string_fmt,
+		*string_val,
+		NULL
+	};
+#endif	/* !OS_SYSV */
+	char buf1[1024], buf2[1024];
+	double value, digits = 9.123456789012345678901234567890123456789;
+	int i, j, r1, r2, failed = 0, num = 0;
+
+/*
+ * Use -DTEST_NILS in order to also test the conversion of nil values.  Might
+ * segfault on systems which don't support converting a NULL pointer with "%s"
+ * and lets some test cases fail against BSD and glibc due to bugs in their
+ * implementations.
+ */
+#ifndef TEST_NILS
+#define TEST_NILS 0
+#elif TEST_NILS
+#undef TEST_NILS
+#define TEST_NILS 1
+#endif	/* !defined(TEST_NILS) */
+#ifdef TEST
+#undef TEST
+#endif	/* defined(TEST) */
+#define TEST(fmt, val)                                                         \
+do {                                                                           \
+	for (i = 0; fmt[i] != NULL; i++)                                       \
+		for (j = 0; j == 0 || val[j - TEST_NILS] != 0; j++) {          \
+			r1 = sprintf(buf1, fmt[i], val[j]);                    \
+			r2 = snprintf(buf2, sizeof(buf2), fmt[i], val[j]);     \
+			if (strcmp(buf1, buf2) != 0 || r1 != r2) {             \
+				(void)printf("Results don't match, "           \
+				    "format string: %s\n"                      \
+				    "\t sprintf(3): [%s] (%d)\n"               \
+				    "\tsnprintf(3): [%s] (%d)\n",              \
+				    fmt[i], buf1, r1, buf2, r2);               \
+				failed++;                                      \
+			}                                                      \
+			num++;                                                 \
+		}                                                              \
+} while (/* CONSTCOND */ 0)
+
+#if HAVE_LOCALE_H
+	(void)setlocale(LC_ALL, "");
+#endif	/* HAVE_LOCALE_H */
+
+	(void)puts("Testing our snprintf(3) against your system's sprintf(3).");
+	TEST(float_fmt, float_val);
+	TEST(long_fmt, long_val);
+	TEST(ulong_fmt, ulong_val);
+	TEST(llong_fmt, llong_val);
+	TEST(string_fmt, string_val);
+#if !OS_SYSV	/* SysV uses a different format than we do. */
+	TEST(pointer_fmt, pointer_val);
+#endif	/* !OS_SYSV */
+	(void)printf("Result: %d out of %d tests failed.\n", failed, num);
+
+	(void)fputs("Checking how many digits we support: ", stdout);
+	for (i = 0; i < 100; i++) {
+		value = pow(10, i) * digits;
+		(void)sprintf(buf1, "%.1f", value);
+		(void)snprintf(buf2, sizeof(buf2), "%.1f", value);
+		if (strcmp(buf1, buf2) != 0) {
+			(void)printf("apparently %d.\n", i);
+			break;
+		}
+	}
+	return (failed == 0) ? 0 : 1;
+}
+#endif	/* TEST_SNPRINTF */
+
+/* vim: set joinspaces textwidth=80: */
diff --git a/libntp/socket.c b/libntp/socket.c
new file mode 100644
index 0000000..de678c6
--- /dev/null
+++ b/libntp/socket.c
@@ -0,0 +1,218 @@
+/*
+ * socket.c - low-level socket operations
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+
+#include "ntp.h"
+#include "ntp_io.h"
+#include "ntp_net.h"
+#include "ntp_debug.h"
+
+/*
+ * Windows C runtime ioctl() can't deal properly with sockets, 
+ * map to ioctlsocket for this source file.
+ */
+#ifdef SYS_WINNT
+#define ioctl(fd, opt, val)  ioctlsocket(fd, opt, (u_long *)(val))
+#endif
+
+/*
+ * on Unix systems the stdio library typically
+ * makes use of file descriptors in the lower
+ * integer range.  stdio usually will make use
+ * of the file descriptors in the range of
+ * [0..FOPEN_MAX)
+ * in order to keep this range clean, for socket
+ * file descriptors we attempt to move them above
+ * FOPEN_MAX. This is not as easy as it sounds as
+ * FOPEN_MAX changes from implementation to implementation
+ * and may exceed to current file decriptor limits.
+ * We are using following strategy:
+ * - keep a current socket fd boundary initialized with
+ *   max(0, min(GETDTABLESIZE() - FD_CHUNK, FOPEN_MAX))
+ * - attempt to move the descriptor to the boundary or
+ *   above.
+ *   - if that fails and boundary > 0 set boundary
+ *     to min(0, socket_fd_boundary - FD_CHUNK)
+ *     -> retry
+ *     if failure and boundary == 0 return old fd
+ *   - on success close old fd return new fd
+ *
+ * effects:
+ *   - fds will be moved above the socket fd boundary
+ *     if at all possible.
+ *   - the socket boundary will be reduced until
+ *     allocation is possible or 0 is reached - at this
+ *     point the algrithm will be disabled
+ */
+SOCKET
+move_fd(
+	SOCKET fd
+	)
+{
+#if !defined(SYS_WINNT) && defined(F_DUPFD)
+#ifndef FD_CHUNK
+#define FD_CHUNK	10
+#endif
+#ifndef FOPEN_MAX
+#define FOPEN_MAX	20
+#endif
+/*
+ * number of fds we would like to have for
+ * stdio FILE* available.
+ * we can pick a "low" number as our use of
+ * FILE* is limited to log files and temporarily
+ * to data and config files. Except for log files
+ * we don't keep the other FILE* open beyond the
+ * scope of the function that opened it.
+ */
+#ifndef FD_PREFERRED_SOCKBOUNDARY
+#define FD_PREFERRED_SOCKBOUNDARY 48
+#endif
+
+	static SOCKET socket_boundary = -1;
+	SOCKET newfd;
+
+	NTP_REQUIRE((int)fd >= 0);
+
+	/*
+	 * check whether boundary has be set up
+	 * already
+	 */
+	if (socket_boundary == -1) {
+		socket_boundary = max(0, min(GETDTABLESIZE() - FD_CHUNK,
+					     min(FOPEN_MAX, FD_PREFERRED_SOCKBOUNDARY)));
+		TRACE(1, ("move_fd: estimated max descriptors: %d, "
+			  "initial socket boundary: %d\n",
+			  GETDTABLESIZE(), socket_boundary));
+	}
+
+	/*
+	 * Leave a space for stdio to work in. potentially moving the
+	 * socket_boundary lower until allocation succeeds.
+	 */
+	do {
+		if (fd >= 0 && fd < socket_boundary) {
+			/* inside reserved range: attempt to move fd */
+			newfd = fcntl(fd, F_DUPFD, socket_boundary);
+
+			if (newfd != -1) {
+				/* success: drop the old one - return the new one */
+				close(fd);
+				return newfd;
+			}
+		} else {
+			/* outside reserved range: no work - return the original one */
+			return fd;
+		}
+		socket_boundary = max(0, socket_boundary - FD_CHUNK);
+		TRACE(1, ("move_fd: selecting new socket boundary: %d\n",
+			  socket_boundary));
+	} while (socket_boundary > 0);
+#else
+	NTP_REQUIRE((int)fd >= 0);
+#endif /* !defined(SYS_WINNT) && defined(F_DUPFD) */
+	return fd;
+}
+
+
+/*
+ * make_socket_nonblocking() - set up descriptor to be non blocking
+ */
+void
+make_socket_nonblocking(
+	SOCKET fd
+	)
+{
+	/*
+	 * set non-blocking,
+	 */
+
+#ifdef USE_FIONBIO
+	/* in vxWorks we use FIONBIO, but the others are defined for old
+	 * systems, so all hell breaks loose if we leave them defined
+	 */
+#undef O_NONBLOCK
+#undef FNDELAY
+#undef O_NDELAY
+#endif
+
+#if defined(O_NONBLOCK) /* POSIX */
+	if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0) {
+		msyslog(LOG_ERR,
+			"fcntl(O_NONBLOCK) fails on fd #%d: %m", fd);
+		exit(1);
+	}
+#elif defined(FNDELAY)
+	if (fcntl(fd, F_SETFL, FNDELAY) < 0) {
+		msyslog(LOG_ERR, "fcntl(FNDELAY) fails on fd #%d: %m",
+			fd);
+		exit(1);
+	}
+#elif defined(O_NDELAY) /* generally the same as FNDELAY */
+	if (fcntl(fd, F_SETFL, O_NDELAY) < 0) {
+		msyslog(LOG_ERR, "fcntl(O_NDELAY) fails on fd #%d: %m",
+			fd);
+		exit(1);
+	}
+#elif defined(FIONBIO)
+	{
+		int on = 1;
+
+		if (ioctl(fd, FIONBIO, &on) < 0) {
+			msyslog(LOG_ERR,
+				"ioctl(FIONBIO) fails on fd #%d: %m",
+				fd);
+			exit(1);
+		}
+	}
+#elif defined(FIOSNBIO)
+	if (ioctl(fd, FIOSNBIO, &on) < 0) {
+		msyslog(LOG_ERR,
+			"ioctl(FIOSNBIO) fails on fd #%d: %m", fd);
+		exit(1);
+	}
+#else
+# include "Bletch: Need non-blocking I/O!"
+#endif
+}
+
+#if 0
+
+/* The following subroutines should probably be moved here */
+
+static SOCKET
+open_socket(
+	sockaddr_u *	addr,
+	int		bcast,
+	int		turn_off_reuse,
+	endpt *		interf
+	)
+void
+sendpkt(
+	sockaddr_u *		dest,
+	struct interface *	ep,
+	int			ttl,
+	struct pkt *		pkt,
+	int			len
+	)
+
+static inline int
+read_refclock_packet(SOCKET fd, struct refclockio *rp, l_fp ts)
+
+static inline int
+read_network_packet(
+	SOCKET			fd,
+	struct interface *	itf,
+	l_fp			ts
+	)
+
+void
+kill_asyncio(int startfd)
+
+#endif /* 0 */
diff --git a/libntp/socktoa.c b/libntp/socktoa.c
new file mode 100644
index 0000000..98abe7c
--- /dev/null
+++ b/libntp/socktoa.c
@@ -0,0 +1,170 @@
+/*
+ * socktoa.c	socktoa(), sockporttoa(), and sock_hash()
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include <stdio.h>
+#include <arpa/inet.h>
+#include <isc/result.h>
+#include <isc/netaddr.h>
+#include <isc/sockaddr.h>
+
+#include "ntp_fp.h"
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+#include "ntp.h"
+
+/*
+ * socktoa - return a numeric host name from a sockaddr_storage structure
+ */
+const char *
+socktoa(
+	const sockaddr_u *sock
+	)
+{
+	int		saved_errno;
+	char *		res;
+	char *		addr;
+	u_long		scope;
+
+	saved_errno = socket_errno();
+	LIB_GETBUF(res);
+
+	if (NULL == sock) {
+		strlcpy(res, "(null)", LIB_BUFLENGTH);
+	} else {
+		switch(AF(sock)) {
+
+		case AF_INET:
+		case AF_UNSPEC:
+			inet_ntop(AF_INET, PSOCK_ADDR4(sock), res,
+				  LIB_BUFLENGTH);
+			break;
+
+		case AF_INET6:
+			inet_ntop(AF_INET6, PSOCK_ADDR6(sock), res,
+				  LIB_BUFLENGTH);
+			scope = SCOPE_VAR(sock);
+			if (0 != scope && !strchr(res, '%')) {
+				addr = res;
+				LIB_GETBUF(res);
+				snprintf(res, LIB_BUFLENGTH, "%s%%%lu",
+					 addr, scope);
+				res[LIB_BUFLENGTH - 1] = '\0';
+			}
+			break;
+
+		default:
+			snprintf(res, LIB_BUFLENGTH, 
+				 "(socktoa unknown family %d)", 
+				 AF(sock));
+		}
+	}
+	errno = saved_errno;
+
+	return res;
+}
+
+
+const char *
+sockporttoa(
+	const sockaddr_u *sock
+	)
+{
+	int		saved_errno;
+	const char *	atext;
+	char *		buf;
+
+	saved_errno = socket_errno();
+	atext = socktoa(sock);
+	LIB_GETBUF(buf);
+	snprintf(buf, LIB_BUFLENGTH,
+		 (IS_IPV6(sock))
+		     ? "[%s]:%hu"
+		     : "%s:%hu",
+		 atext, SRCPORT(sock));
+	errno = saved_errno;
+
+	return buf;
+}
+
+
+/*
+ * sock_hash - hash a sockaddr_u structure
+ */
+u_short
+sock_hash(
+	const sockaddr_u *addr
+	)
+{
+	u_int hashVal;
+	u_int j;
+	size_t len;
+	const u_char *pch;
+
+	hashVal = 0;
+	len = 0;
+
+	/*
+	 * We can't just hash the whole thing because there are hidden
+	 * fields in sockaddr_in6 that might be filled in by recvfrom(),
+	 * so just use the family, port and address.
+	 */
+	pch = (const void *)&AF(addr);
+	hashVal = 37 * hashVal + *pch;
+	if (sizeof(AF(addr)) > 1) {
+		pch++;
+		hashVal = 37 * hashVal + *pch;
+	}
+	switch(AF(addr)) {
+	case AF_INET:
+		pch = (const void *)&SOCK_ADDR4(addr);
+		len = sizeof(SOCK_ADDR4(addr));
+		break;
+
+	case AF_INET6:
+		pch = (const void *)&SOCK_ADDR6(addr);
+		len = sizeof(SOCK_ADDR6(addr));
+		break;
+	}
+
+	for (j = 0; j < len ; j++)
+		hashVal = 37 * hashVal + pch[j];
+
+	return (u_short)(hashVal & USHRT_MAX);
+}
+
+
+int
+sockaddr_masktoprefixlen(
+	const sockaddr_u *	psa
+	)
+{
+	isc_netaddr_t	isc_na;
+	isc_sockaddr_t	isc_sa;
+	u_int		pfxlen;
+	isc_result_t	result;
+	int		rc;
+
+	ZERO(isc_sa);
+	memcpy(&isc_sa.type, psa,
+	       min(sizeof(isc_sa.type), sizeof(*psa)));
+	isc_netaddr_fromsockaddr(&isc_na, &isc_sa);
+	result = isc_netaddr_masktoprefixlen(&isc_na, &pfxlen);
+	rc = (ISC_R_SUCCESS == result)
+		 ? (int)pfxlen
+		 : -1;
+
+	return rc;
+}
diff --git a/libntp/socktohost.c b/libntp/socktohost.c
new file mode 100644
index 0000000..c61e571
--- /dev/null
+++ b/libntp/socktohost.c
@@ -0,0 +1,110 @@
+/*
+ * socktoa - return a numeric host name from a sockaddr_storage structure
+ */
+#include <config.h>
+#include <sys/types.h>
+#ifdef HAVE_SYS_SOCKET_H
+#include <sys/socket.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+
+#include <arpa/inet.h>
+
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+#include "ntp.h"
+#include "ntp_debug.h"
+
+
+const char *
+socktohost(
+	const sockaddr_u *sock
+	)
+{
+	const char		svc[] = "ntp";
+	char *			pbuf;
+	char *			pliar;
+	int			gni_flags;
+	struct addrinfo		hints;
+	struct addrinfo *	alist;
+	struct addrinfo *	ai;
+	sockaddr_u		addr;
+	size_t			octets;
+	int			a_info;
+
+	/* reverse the address to purported DNS name */
+	LIB_GETBUF(pbuf);
+	gni_flags = NI_DGRAM | NI_NAMEREQD;
+	if (getnameinfo(&sock->sa, SOCKLEN(sock), pbuf, LIB_BUFLENGTH,
+			NULL, 0, gni_flags))
+		return stoa(sock);	/* use address */
+
+	TRACE(1, ("%s reversed to %s\n", stoa(sock), pbuf));
+
+	/*
+	 * Resolve the reversed name and make sure the reversed address
+	 * is among the results.
+	 */
+	ZERO(hints);
+	hints.ai_family = AF(sock);
+	hints.ai_protocol = IPPROTO_UDP;
+	hints.ai_socktype = SOCK_DGRAM;
+	hints.ai_flags = 0;
+	alist = NULL;
+
+	a_info = getaddrinfo(pbuf, svc, &hints, &alist);
+	if (a_info == EAI_NONAME
+#ifdef EAI_NODATA
+	    || a_info == EAI_NODATA
+#endif
+	   ) {
+		hints.ai_flags = AI_CANONNAME;
+#ifdef AI_ADDRCONFIG
+		hints.ai_flags |= AI_ADDRCONFIG;
+#endif
+		a_info = getaddrinfo(pbuf, svc, &hints, &alist);	
+	}
+#ifdef AI_ADDRCONFIG
+	/* Some older implementations don't like AI_ADDRCONFIG. */
+	if (a_info == EAI_BADFLAGS) {
+		hints.ai_flags &= ~AI_ADDRCONFIG;
+		a_info = getaddrinfo(pbuf, svc, &hints, &alist);	
+	}
+#endif
+	if (a_info)
+		goto forward_fail;
+
+	NTP_INSIST(alist != NULL);
+
+	for (ai = alist; ai != NULL; ai = ai->ai_next) {
+		/*
+		 * Make a convenience sockaddr_u copy from ai->ai_addr
+		 * because casting from sockaddr * to sockaddr_u * is
+		 * risking alignment problems on platforms where
+		 * sockaddr_u has stricter alignment than sockaddr,
+		 * such as sparc.
+		 */
+		ZERO_SOCK(&addr);
+		octets = min(sizeof(addr), ai->ai_addrlen);
+		memcpy(&addr, ai->ai_addr, octets);
+		if (SOCK_EQ(sock, &addr))
+			break;
+	}
+	freeaddrinfo(alist);
+
+	if (ai != NULL)
+		return pbuf;	/* forward check passed */
+
+    forward_fail:
+	TRACE(1, ("%s forward check lookup fail: %s\n", pbuf,
+		  gai_strerror(a_info)));
+	LIB_GETBUF(pliar);
+	snprintf(pliar, LIB_BUFLENGTH, "%s (%s)", stoa(sock), pbuf);
+
+	return pliar;
+}
diff --git a/libntp/ssl_init.c b/libntp/ssl_init.c
new file mode 100644
index 0000000..7f1e9a0
--- /dev/null
+++ b/libntp/ssl_init.c
@@ -0,0 +1,187 @@
+/*
+ * ssl_init.c	Common OpenSSL initialization code for the various
+ *		programs which use it.
+ *
+ * Moved from ntpd/ntp_crypto.c crypto_setup()
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <ctype.h>
+#include <ntp.h>
+#include <ntp_debug.h>
+#include <lib_strbuf.h>
+
+#ifdef OPENSSL
+#include "openssl/err.h"
+#include "openssl/evp.h"
+
+void	atexit_ssl_cleanup(void);
+
+int ssl_init_done;
+
+void
+ssl_init(void)
+{
+	init_lib();
+
+	if (ssl_init_done)
+		return;
+
+	ERR_load_crypto_strings();
+	OpenSSL_add_all_algorithms();
+	atexit(&atexit_ssl_cleanup);
+
+	ssl_init_done = TRUE;
+}
+
+
+void
+atexit_ssl_cleanup(void)
+{
+	if (!ssl_init_done)
+		return;
+
+	ssl_init_done = FALSE;
+	EVP_cleanup();
+	ERR_free_strings();
+}
+
+
+void
+ssl_check_version(void)
+{
+	if ((SSLeay() ^ OPENSSL_VERSION_NUMBER) & ~0xff0L) {
+		msyslog(LOG_WARNING,
+		    "OpenSSL version mismatch. Built against %lx, you have %lx",
+		    (u_long)OPENSSL_VERSION_NUMBER, SSLeay());
+		fprintf(stderr,
+		    "OpenSSL version mismatch. Built against %lx, you have %lx\n",
+		    (u_long)OPENSSL_VERSION_NUMBER, SSLeay());
+	}
+
+	INIT_SSL();
+}
+#endif	/* OPENSSL */
+
+
+/*
+ * keytype_from_text	returns OpenSSL NID for digest by name, and
+ *			optionally the associated digest length.
+ *
+ * Used by ntpd authreadkeys(), ntpq and ntpdc keytype()
+ */
+int
+keytype_from_text(
+	const char *text,
+	size_t *pdigest_len
+	)
+{
+	int		key_type;
+	u_int		digest_len;
+#ifdef OPENSSL
+	const u_long	max_digest_len = MAX_MAC_LEN - sizeof(keyid_t);
+	u_char		digest[EVP_MAX_MD_SIZE];
+	char *		upcased;
+	char *		pch;
+	EVP_MD_CTX	ctx;
+
+	/*
+	 * OpenSSL digest short names are capitalized, so uppercase the
+	 * digest name before passing to OBJ_sn2nid().  If it is not
+	 * recognized but begins with 'M' use NID_md5 to be consistent
+	 * with past behavior.
+	 */
+	INIT_SSL();
+	LIB_GETBUF(upcased);
+	strlcpy(upcased, text, LIB_BUFLENGTH);
+	for (pch = upcased; '\0' != *pch; pch++)
+		*pch = (char)toupper(*pch);
+	key_type = OBJ_sn2nid(upcased);
+#else
+	key_type = 0;
+#endif
+
+	if (!key_type && 'm' == tolower(text[0]))
+		key_type = NID_md5;
+
+	if (!key_type)
+		return 0;
+
+	if (NULL != pdigest_len) {
+#ifdef OPENSSL
+		EVP_DigestInit(&ctx, EVP_get_digestbynid(key_type));
+		EVP_DigestFinal(&ctx, digest, &digest_len);
+		if (digest_len > max_digest_len) {
+			fprintf(stderr,
+				"key type %s %u octet digests are too big, max %lu\n",
+				keytype_name(key_type), digest_len,
+				max_digest_len);
+			msyslog(LOG_ERR,
+				"key type %s %u octet digests are too big, max %lu",
+				keytype_name(key_type), digest_len,
+				max_digest_len);
+			return 0;
+		}
+#else
+		digest_len = 16;
+#endif
+		*pdigest_len = digest_len;
+	}
+
+	return key_type;
+}
+
+
+/*
+ * keytype_name		returns OpenSSL short name for digest by NID.
+ *
+ * Used by ntpq and ntpdc keytype()
+ */
+const char *
+keytype_name(
+	int nid
+	)
+{
+	static const char unknown_type[] = "(unknown key type)";
+	const char *name;
+
+#ifdef OPENSSL
+	INIT_SSL();
+	name = OBJ_nid2sn(nid);
+	if (NULL == name)
+		name = unknown_type;
+#else	/* !OPENSSL follows */
+	if (NID_md5 == nid)
+		name = "MD5";
+	else
+		name = unknown_type;
+#endif
+	return name;
+}
+
+
+/*
+ * Use getpassphrase() if configure.ac detected it, as Suns that
+ * have it truncate the password in getpass() to 8 characters.
+ */
+#ifdef HAVE_GETPASSPHRASE
+# define	getpass(str)	getpassphrase(str)
+#endif
+
+/*
+ * getpass_keytype() -- shared between ntpq and ntpdc, only vaguely
+ *			related to the rest of ssl_init.c.
+ */
+char *
+getpass_keytype(
+	int	keytype
+	)
+{
+	char	pass_prompt[64 + 11 + 1]; /* 11 for " Password: " */
+
+	snprintf(pass_prompt, sizeof(pass_prompt),
+		 "%.64s Password: ", keytype_name(keytype));
+
+	return getpass(pass_prompt);
+}
diff --git a/libntp/statestr.c b/libntp/statestr.c
new file mode 100644
index 0000000..cd98eb3
--- /dev/null
+++ b/libntp/statestr.c
@@ -0,0 +1,501 @@
+/*
+ * pretty printing of status information
+ */
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include "ntp_stdlib.h"
+#include "ntp_fp.h"
+#include "ntp.h"
+#include "lib_strbuf.h"
+#include "ntp_refclock.h"
+#include "ntp_control.h"
+#include "ntp_string.h"
+#ifdef KERNEL_PLL
+# include "ntp_syscall.h"
+#endif
+
+
+/*
+ * Structure for turning various constants into a readable string.
+ */
+struct codestring {
+	int code;
+	const char * const string;
+};
+
+/*
+ * Leap status (leap)
+ */
+static const struct codestring leap_codes[] = {
+	{ LEAP_NOWARNING,	"leap_none" },
+	{ LEAP_ADDSECOND,	"leap_add_sec" },
+	{ LEAP_DELSECOND,	"leap_del_sec" },
+	{ LEAP_NOTINSYNC,	"leap_alarm" },
+	{ -1,			"leap" }
+};
+
+/*
+ * Clock source status (sync)
+ */
+static const struct codestring sync_codes[] = {
+	{ CTL_SST_TS_UNSPEC,	"sync_unspec" },
+	{ CTL_SST_TS_ATOM,	"sync_pps" },
+	{ CTL_SST_TS_LF,	"sync_lf_radio" },
+	{ CTL_SST_TS_HF,	"sync_hf_radio" },
+	{ CTL_SST_TS_UHF,	"sync_uhf_radio" },
+	{ CTL_SST_TS_LOCAL,	"sync_local" },
+	{ CTL_SST_TS_NTP,	"sync_ntp" },
+	{ CTL_SST_TS_UDPTIME,	"sync_other" },
+	{ CTL_SST_TS_WRSTWTCH,	"sync_wristwatch" },
+	{ CTL_SST_TS_TELEPHONE,	"sync_telephone" },
+	{ -1,			"sync" }
+};
+
+/*
+ * Peer selection status (sel)
+ */
+static const struct codestring select_codes[] = {
+	{ CTL_PST_SEL_REJECT,	"sel_reject" },
+	{ CTL_PST_SEL_SANE,	"sel_falsetick" },
+	{ CTL_PST_SEL_CORRECT,	"sel_excess" },
+	{ CTL_PST_SEL_SELCAND,	"sel_outlyer" },
+	{ CTL_PST_SEL_SYNCCAND,	"sel_candidate" },
+	{ CTL_PST_SEL_EXCESS,	"sel_backup" },
+	{ CTL_PST_SEL_SYSPEER,	"sel_sys.peer" },
+	{ CTL_PST_SEL_PPS,	"sel_pps.peer" },
+	{ -1,			"sel" }
+};
+
+/*
+ * Clock status (clk)
+ */
+static const struct codestring clock_codes[] = {
+	{ CTL_CLK_OKAY,		"clk_unspec" },
+	{ CTL_CLK_NOREPLY,	"clk_no_reply" },
+	{ CTL_CLK_BADFORMAT,	"clk_bad_format" },
+	{ CTL_CLK_FAULT,	"clk_fault" },
+	{ CTL_CLK_PROPAGATION,	"clk_bad_signal" },
+	{ CTL_CLK_BADDATE,	"clk_bad_date" },
+	{ CTL_CLK_BADTIME,	"clk_bad_time" },
+	{ -1,			"clk" }
+};
+
+
+#ifdef FLASH_CODES_UNUSED
+/*
+ * Flash bits -- see ntpq.c tstflags & tstflagnames
+ */
+static const struct codestring flash_codes[] = {
+	{ TEST1,		"pkt_dup" },
+	{ TEST2,		"pkt_bogus" },
+	{ TEST3,		"pkt_unsync" },
+	{ TEST4,		"pkt_denied" },
+	{ TEST5,		"pkt_auth" },
+	{ TEST6,		"pkt_stratum" },
+	{ TEST7,		"pkt_header" },
+	{ TEST8,		"pkt_autokey" },
+	{ TEST9,		"pkt_crypto" },
+	{ TEST10,		"peer_stratum" },
+	{ TEST11,		"peer_dist" },
+	{ TEST12,		"peer_loop" },
+	{ TEST13,		"peer_unreach" },
+	{ -1,			"flash" }
+};
+#endif
+
+
+/*
+ * System events (sys)
+ */
+static const struct codestring sys_codes[] = {
+	{ EVNT_UNSPEC,		"unspecified" },
+	{ EVNT_NSET,		"freq_not_set" },
+	{ EVNT_FSET,		"freq_set" },
+	{ EVNT_SPIK,		"spike_detect" },
+	{ EVNT_FREQ,		"freq_mode" },
+	{ EVNT_SYNC,		"clock_sync" },
+	{ EVNT_SYSRESTART,	"restart" },
+	{ EVNT_SYSFAULT,	"panic_stop" },
+	{ EVNT_NOPEER,		"no_sys_peer" },
+	{ EVNT_ARMED,		"leap_armed" },
+	{ EVNT_DISARMED,	"leap_disarmed" },
+	{ EVNT_LEAP,		"leap_event" },
+	{ EVNT_CLOCKRESET,	"clock_step" },
+	{ EVNT_KERN,		"kern" },
+	{ EVNT_TAI,		"TAI" },
+	{ EVNT_LEAPVAL,		"stale_leapsecond_values" },
+	{ -1,			"" }
+};
+
+/*
+ * Peer events (peer)
+ */
+static const struct codestring peer_codes[] = {
+	{ PEVNT_MOBIL & ~PEER_EVENT,	"mobilize" },
+	{ PEVNT_DEMOBIL & ~PEER_EVENT,	"demobilize" },
+	{ PEVNT_UNREACH & ~PEER_EVENT,	"unreachable" },
+	{ PEVNT_REACH & ~PEER_EVENT,	"reachable" },
+	{ PEVNT_RESTART & ~PEER_EVENT,	"restart" },
+	{ PEVNT_REPLY & ~PEER_EVENT,	"no_reply" },
+	{ PEVNT_RATE & ~PEER_EVENT,	"rate_exceeded" },
+	{ PEVNT_DENY & ~PEER_EVENT,	"access_denied" },
+	{ PEVNT_ARMED & ~PEER_EVENT,	"leap_armed" },
+	{ PEVNT_NEWPEER & ~PEER_EVENT,	"sys_peer" },
+	{ PEVNT_CLOCK & ~PEER_EVENT,	"clock_event" },
+	{ PEVNT_AUTH & ~PEER_EVENT,	"bad_auth" },
+	{ PEVNT_POPCORN & ~PEER_EVENT,	"popcorn" },
+	{ PEVNT_XLEAVE & ~PEER_EVENT,	"interleave_mode" },
+	{ PEVNT_XERR & ~PEER_EVENT,	"interleave_error" },
+	{ -1,				"" }
+};
+
+/*
+ * Peer status bits
+ */
+static const struct codestring peer_st_bits[] = {
+	{ CTL_PST_CONFIG,		"conf" },
+	{ CTL_PST_AUTHENABLE,		"authenb" },
+	{ CTL_PST_AUTHENTIC,		"auth" },
+	{ CTL_PST_REACH,		"reach" },
+	{ CTL_PST_BCAST,		"bcast" },
+	/* not used with getcode(), no terminating entry needed */
+};
+
+/*
+ * Restriction match bits
+ */
+static const struct codestring res_match_bits[] = {
+	{ RESM_NTPONLY,			"ntpport" },
+	{ RESM_INTERFACE,		"interface" },
+	{ RESM_SOURCE,			"source" },
+	/* not used with getcode(), no terminating entry needed */
+};
+
+/*
+ * Restriction access bits
+ */
+static const struct codestring res_access_bits[] = {
+	{ RES_IGNORE,			"ignore" },
+	{ RES_DONTSERVE,		"noserve" },
+	{ RES_DONTTRUST,		"notrust" },
+	{ RES_NOQUERY,			"noquery" },
+	{ RES_NOMODIFY,			"nomodify" },
+	{ RES_NOPEER,			"nopeer" },
+	{ RES_NOTRAP,			"notrap" },
+	{ RES_LPTRAP,			"lptrap" },
+	{ RES_LIMITED,			"limited" },
+	{ RES_VERSION,			"version" },
+	{ RES_KOD,			"kod" },
+	{ RES_FLAKE,			"flake" },
+	/* not used with getcode(), no terminating entry needed */
+};
+
+#ifdef AUTOKEY
+/*
+ * Crypto events (cryp)
+ */
+static const struct codestring crypto_codes[] = {
+	{ XEVNT_OK & ~CRPT_EVENT,	"success" },
+	{ XEVNT_LEN & ~CRPT_EVENT,	"bad_field_format_or_length" },
+	{ XEVNT_TSP & ~CRPT_EVENT,	"bad_timestamp" },
+	{ XEVNT_FSP & ~CRPT_EVENT,	"bad_filestamp" },
+	{ XEVNT_PUB & ~CRPT_EVENT,	"bad_or_missing_public_key" },
+	{ XEVNT_MD & ~CRPT_EVENT,	"unsupported_digest_type" },
+	{ XEVNT_KEY & ~CRPT_EVENT,	"unsupported_identity_type" },
+	{ XEVNT_SGL & ~CRPT_EVENT,	"bad_signature_length" },
+	{ XEVNT_SIG & ~CRPT_EVENT,	"signature_not_verified" },
+	{ XEVNT_VFY & ~CRPT_EVENT,	"certificate_not_verified" },
+	{ XEVNT_PER & ~CRPT_EVENT,	"host_certificate_expired" },
+	{ XEVNT_CKY & ~CRPT_EVENT,	"bad_or_missing_cookie" },
+	{ XEVNT_DAT & ~CRPT_EVENT,	"bad_or_missing_leapseconds" },
+	{ XEVNT_CRT & ~CRPT_EVENT,	"bad_or_missing_certificate" },	
+	{ XEVNT_ID & ~CRPT_EVENT,	"bad_or_missing_group key" },
+	{ XEVNT_ERR & ~CRPT_EVENT,	"protocol_error" },
+	{ -1,				"" }
+};
+#endif	/* AUTOKEY */
+
+#ifdef KERNEL_PLL
+/*
+ * kernel discipline status bits
+ */
+static const struct codestring k_st_bits[] = {
+# ifdef STA_PLL
+	{ STA_PLL,			"pll" },
+# endif
+# ifdef STA_PPSFREQ
+	{ STA_PPSFREQ,			"ppsfreq" },
+# endif
+# ifdef STA_PPSTIME
+	{ STA_PPSTIME,			"ppstime" },
+# endif
+# ifdef STA_FLL
+	{ STA_FLL,			"fll" },
+# endif
+# ifdef STA_INS
+	{ STA_INS,			"ins" },
+# endif
+# ifdef STA_DEL
+	{ STA_DEL,			"del" },
+# endif
+# ifdef STA_UNSYNC
+	{ STA_UNSYNC,			"unsync" },
+# endif
+# ifdef STA_FREQHOLD
+	{ STA_FREQHOLD,			"freqhold" },
+# endif
+# ifdef STA_PPSSIGNAL
+	{ STA_PPSSIGNAL,		"ppssignal" },
+# endif
+# ifdef STA_PPSJITTER
+	{ STA_PPSJITTER,		"ppsjitter" },
+# endif
+# ifdef STA_PPSWANDER
+	{ STA_PPSWANDER,		"ppswander" },
+# endif
+# ifdef STA_PPSERROR
+	{ STA_PPSERROR,			"ppserror" },
+# endif
+# ifdef STA_CLOCKERR
+	{ STA_CLOCKERR,			"clockerr" },
+# endif
+# ifdef STA_NANO
+	{ STA_NANO,			"nano" },
+# endif
+# ifdef STA_MODE
+	{ STA_MODE,			"mode=fll" },
+# endif
+# ifdef STA_CLK
+	{ STA_CLK,			"src=B" },
+# endif
+	/* not used with getcode(), no terminating entry needed */
+};
+#endif	/* KERNEL_PLL */
+
+/* Forwards */
+static const char *	getcode(int, const struct codestring *);
+static const char *	getevents(int);
+static const char *	peer_st_flags(u_char pst);
+
+/*
+ * getcode - return string corresponding to code
+ */
+static const char *
+getcode(
+	int				code,
+	const struct codestring *	codetab
+	)
+{
+	char *	buf;
+
+	while (codetab->code != -1) {
+		if (codetab->code == code)
+			return codetab->string;
+		codetab++;
+	}
+
+	LIB_GETBUF(buf);
+	snprintf(buf, LIB_BUFLENGTH, "%s_%d", codetab->string, code);
+
+	return buf;
+}
+
+/*
+ * getevents - return a descriptive string for the event count
+ */
+static const char *
+getevents(
+	int cnt
+	)
+{
+	char *	buf;
+
+	if (cnt == 0)
+		return "no events";
+
+	LIB_GETBUF(buf);
+	snprintf(buf, LIB_BUFLENGTH, "%d event%s", cnt,
+		 (1 == cnt)
+		     ? ""
+		     : "s");
+
+	return buf;
+}
+
+
+/*
+ * decode_bitflags()
+ *
+ * returns a human-readable string with a keyword from tab for each bit
+ * set in bits, separating multiple entries with text of sep2.
+ */
+static const char *
+decode_bitflags(
+	int				bits,
+	const char *			sep2,
+	const struct codestring *	tab,
+	size_t				tab_ct
+	)
+{
+	const char *	sep;
+	char *		buf;
+	char *		pch;
+	char *		lim;
+	size_t		b;
+	int		rc;
+	int		saved_errno;	/* for use in DPRINTF with %m */
+
+	saved_errno = errno;
+	LIB_GETBUF(buf);
+	pch = buf;
+	lim = buf + LIB_BUFLENGTH;
+	sep = "";
+
+	for (b = 0; b < tab_ct; b++) {
+		if (tab[b].code & bits) {
+			rc = snprintf(pch, (lim - pch), "%s%s", sep,
+				      tab[b].string);
+			if (rc < 0)
+				goto toosmall;
+			pch += (u_int)rc;
+			if (pch >= lim)
+				goto toosmall;
+			sep = sep2;
+		}
+	}
+
+	return buf;
+
+    toosmall:
+	snprintf(buf, LIB_BUFLENGTH,
+		 "decode_bitflags(%s) can't decode 0x%x in %d bytes",
+		 (tab == peer_st_bits)
+		     ? "peer_st"
+		     : 
+#ifdef KERNEL_PLL
+		       (tab == k_st_bits)
+			   ? "kern_st"
+			   :
+#endif
+			     "",
+		 bits, (int)LIB_BUFLENGTH);
+	errno = saved_errno;
+
+	return buf;
+}
+
+
+static const char *
+peer_st_flags(
+	u_char pst
+	)
+{
+	return decode_bitflags(pst, ", ", peer_st_bits,
+			       COUNTOF(peer_st_bits));
+}
+
+
+const char *
+res_match_flags(
+	u_short mf
+	)
+{
+	return decode_bitflags(mf, " ", res_match_bits,
+			       COUNTOF(res_match_bits));
+}
+
+
+const char *
+res_access_flags(
+	u_short af
+	)
+{
+	return decode_bitflags(af, " ", res_access_bits,
+			       COUNTOF(res_access_bits));
+}
+
+
+#ifdef KERNEL_PLL
+const char *
+k_st_flags(
+	u_int32 st
+	)
+{
+	return decode_bitflags(st, " ", k_st_bits, COUNTOF(k_st_bits));
+}
+#endif	/* KERNEL_PLL */
+
+
+/*
+ * statustoa - return a descriptive string for a peer status
+ */
+char *
+statustoa(
+	int type,
+	int st
+	)
+{
+	char *	cb;
+	char *	cc;
+	u_char	pst;
+
+	LIB_GETBUF(cb);
+
+	switch (type) {
+
+	case TYPE_SYS:
+		snprintf(cb, LIB_BUFLENGTH, "%s, %s, %s, %s",
+			 getcode(CTL_SYS_LI(st), leap_codes),
+			 getcode(CTL_SYS_SOURCE(st), sync_codes),
+			 getevents(CTL_SYS_NEVNT(st)),
+			 getcode(CTL_SYS_EVENT(st), sys_codes));
+		break;
+	
+	case TYPE_PEER:
+		pst = (u_char)CTL_PEER_STATVAL(st);
+		snprintf(cb, LIB_BUFLENGTH, "%s, %s, %s",
+			 peer_st_flags(pst),
+			 getcode(pst & 0x7, select_codes),
+			 getevents(CTL_PEER_NEVNT(st)));
+		if (CTL_PEER_EVENT(st) != EVNT_UNSPEC) {
+			cc = cb + strlen(cb);
+			snprintf(cc, LIB_BUFLENGTH - (cc - cb), ", %s",
+				 getcode(CTL_PEER_EVENT(st),
+					 peer_codes));
+		}
+		break;
+	
+	case TYPE_CLOCK:
+		snprintf(cb, LIB_BUFLENGTH, "%s, %s",
+			 getevents(CTL_SYS_NEVNT(st)),
+			 getcode((st) & 0xf, clock_codes));
+		break;
+	}
+
+	return cb;
+}
+
+const char *
+eventstr(
+	int num
+	)
+{
+	if (num & PEER_EVENT)
+		return (getcode(num & ~PEER_EVENT, peer_codes));
+#ifdef AUTOKEY
+	else if (num & CRPT_EVENT)
+		return (getcode(num & ~CRPT_EVENT, crypto_codes));
+#endif	/* AUTOKEY */
+	else
+		return (getcode(num, sys_codes));
+}
+
+const char *
+ceventstr(
+	int num
+	)
+{
+	return getcode(num, clock_codes);
+}
diff --git a/libntp/strdup.c b/libntp/strdup.c
new file mode 100644
index 0000000..f7565a2
--- /dev/null
+++ b/libntp/strdup.c
@@ -0,0 +1,30 @@
+#include <config.h>
+
+#include <string.h>
+#include "ntp_malloc.h"
+
+#ifndef HAVE_STRDUP
+
+char *strdup(const char *s);
+
+char *
+strdup(
+	const char *s
+	)
+{
+	size_t	octets;
+	char *	cp;
+
+	if (s) {
+		octets = 1 + strlen(s);
+		cp = malloc(octets);
+		if (NULL != cp)
+			memcpy(cp, s, octets);
+	else
+		cp = NULL;
+
+	return(cp);
+}
+#else
+int strdup_c_nonempty_compilation_unit;
+#endif
diff --git a/libntp/strl_obsd.c b/libntp/strl_obsd.c
new file mode 100644
index 0000000..cb8d4f3
--- /dev/null
+++ b/libntp/strl_obsd.c
@@ -0,0 +1,123 @@
+/* 
+ * Why use strlcpy()/strlcat() instead of standard strncpy()/strncat()?
+ * To reduce likelihood of bugs and avoid wasteful zero fills.  See:
+ * http://www.gratisoft.us/todd/papers/strlcpy.html
+ */
+
+/*	$OpenBSD: strlcpy.c,v 1.11 2006/05/05 15:27:38 millert Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <config.h>		/* + marks local changes */
+#ifdef HAVE_SYS_TYPES_H		/* + */
+#include <sys/types.h>
+#endif				/* + */
+#include <string.h>
+
+#include "ntp_stdlib.h"		/* + strlcpy, strlcat prototypes */
+
+#ifndef HAVE_STRLCPY		/* + */
+/*
+ * Copy src to string dst of size siz.  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz == 0).
+ * Returns strlen(src); if retval >= siz, truncation occurred.
+ */
+size_t
+strlcpy(char *dst, const char *src, size_t siz)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0) {
+		while (--n != 0) {
+			if ((*d++ = *s++) == '\0')
+				break;
+		}
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0) {
+		if (siz != 0)
+			*d = '\0';		/* NUL-terminate dst */
+		while (*s++)
+			;
+	}
+
+	return(s - src - 1);	/* count does not include NUL */
+}
+#endif				/* + */
+
+
+/*	$OpenBSD: strlcat.c,v 1.13 2005/08/08 08:05:37 espie Exp $	*/
+
+/*
+ * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* #include <sys/types.h> */	/* + */
+/* #include <string.h> */	/* + */
+
+#ifndef HAVE_STRLCAT		/* + */
+/*
+ * Appends src to string dst of size siz (unlike strncat, siz is the
+ * full size of dst, not space left).  At most siz-1 characters
+ * will be copied.  Always NUL terminates (unless siz <= strlen(dst)).
+ * Returns strlen(src) + MIN(siz, strlen(initial dst)).
+ * If retval >= siz, truncation occurred.
+ */
+size_t
+strlcat(char *dst, const char *src, size_t siz)
+{
+	char *d = dst;
+	const char *s = src;
+	size_t n = siz;
+	size_t dlen;
+
+	/* Find the end of dst and adjust bytes left but don't go past end */
+	while (n-- != 0 && *d != '\0')
+		d++;
+	dlen = d - dst;
+	n = siz - dlen;
+
+	if (n == 0)
+		return(dlen + strlen(s));
+	while (*s != '\0') {
+		if (n != 1) {
+			*d++ = *s;
+			n--;
+		}
+		s++;
+	}
+	*d = '\0';
+
+	return(dlen + (s - src));	/* count does not include NUL */
+}
+#endif				/* + */
diff --git a/libntp/syssignal.c b/libntp/syssignal.c
new file mode 100644
index 0000000..5e496a9
--- /dev/null
+++ b/libntp/syssignal.c
@@ -0,0 +1,188 @@
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <signal.h>
+
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+
+static ctrl_c_fn	ctrl_c_hook;
+#ifndef SYS_WINNT
+RETSIGTYPE sigint_handler(int);
+#else
+BOOL WINAPI console_event_handler(DWORD);
+#endif
+
+
+#ifdef HAVE_SIGACTION
+
+# ifdef SA_RESTART
+#  define Z_SA_RESTART		SA_RESTART
+# else
+#  define Z_SA_RESTART		0
+# endif
+
+void
+signal_no_reset(
+	int sig,
+	void (*func)(int)
+	)
+{
+	int n;
+	struct sigaction vec;
+	struct sigaction ovec;
+
+	ZERO(vec);
+	sigemptyset(&vec.sa_mask);
+	vec.sa_handler = func;
+
+	/* Added for PPS clocks on Solaris 7 which get EINTR errors */
+# ifdef SIGPOLL
+	if (SIGPOLL == sig)
+		vec.sa_flags = Z_SA_RESTART;
+# endif
+# ifdef SIGIO
+	if (SIGIO == sig)
+		vec.sa_flags = Z_SA_RESTART;
+# endif
+
+	do
+		n = sigaction(sig, &vec, &ovec);
+	while (-1 == n && EINTR == errno);
+	if (-1 == n) {
+		perror("sigaction");
+		exit(1);
+	}
+}
+
+#elif  HAVE_SIGVEC
+
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func)(int)
+	)
+{
+	struct sigvec sv;
+	int n;
+
+	ZERO(sv);
+	sv.sv_handler = func;
+	n = sigvec(sig, &sv, (struct sigvec *)NULL);
+	if (-1 == n) {
+		perror("sigvec");
+		exit(1);
+	}
+}
+
+#elif  HAVE_SIGSET
+
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func)(int)
+	)
+{
+	int n;
+
+	n = sigset(sig, func);
+	if (-1 == n) {
+		perror("sigset");
+		exit(1);
+	}
+}
+
+#else
+
+/* Beware!	This implementation resets the signal to SIG_DFL */
+void
+signal_no_reset(
+	int sig,
+	RETSIGTYPE (*func)(int)
+	)
+{
+#ifndef SIG_ERR
+# define SIG_ERR	(-1)
+#endif
+	if (SIG_ERR == signal(sig, func)) {
+		perror("signal");
+		exit(1);
+	}
+}
+
+#endif
+
+#ifndef SYS_WINNT
+/*
+ * POSIX implementation of set_ctrl_c_hook()
+ */
+RETSIGTYPE
+sigint_handler(
+	int	signum
+	)
+{
+	UNUSED_ARG(signum);
+	if (ctrl_c_hook != NULL)
+		(*ctrl_c_hook)();
+}
+
+void
+set_ctrl_c_hook(
+	ctrl_c_fn	c_hook
+	)
+{
+	RETSIGTYPE (*handler)(int);
+
+	if (NULL == c_hook) {
+		handler = SIG_DFL;
+		ctrl_c_hook = NULL;
+	} else {
+		handler = &sigint_handler;
+		ctrl_c_hook = c_hook;
+	}
+	signal_no_reset(SIGINT, handler);
+}
+#else	/* SYS_WINNT follows */
+/*
+ * Windows implementation of set_ctrl_c_hook()
+ */
+BOOL WINAPI 
+console_event_handler(  
+	DWORD	dwCtrlType
+	)
+{
+	BOOL handled;
+
+	if (CTRL_C_EVENT == dwCtrlType && ctrl_c_hook != NULL) {
+		(*ctrl_c_hook)();
+		handled = TRUE;
+	} else {
+		handled = FALSE;
+	}
+
+	return handled;
+}
+void
+set_ctrl_c_hook(
+	ctrl_c_fn	c_hook
+	)
+{
+	BOOL install;
+
+	if (NULL == c_hook) {
+		ctrl_c_hook = NULL;
+		install = FALSE;
+	} else {
+		ctrl_c_hook = c_hook;
+		install = TRUE;
+	}
+	if (!SetConsoleCtrlHandler(&console_event_handler, install))
+		msyslog(LOG_ERR, "Can't %s console control handler: %m",
+			(install)
+			    ? "add"
+			    : "remove");
+}
+#endif	/* SYS_WINNT */
diff --git a/libntp/systime.c b/libntp/systime.c
new file mode 100644
index 0000000..f5eabcd
--- /dev/null
+++ b/libntp/systime.c
@@ -0,0 +1,570 @@
+/*
+ * systime -- routines to fiddle a UNIX clock.
+ *
+ * ATTENTION: Get approval from Dave Mills on all changes to this file!
+ *
+ */
+#include <config.h>
+
+#include "ntp.h"
+#include "ntp_syslog.h"
+#include "ntp_stdlib.h"
+#include "ntp_random.h"
+#include "iosignal.h"
+#include "timevalops.h"
+#include "timespecops.h"
+#include "ntp_calendar.h"
+
+#ifdef HAVE_SYS_PARAM_H
+# include <sys/param.h>
+#endif
+#ifdef HAVE_UTMP_H
+# include <utmp.h>
+#endif /* HAVE_UTMP_H */
+#ifdef HAVE_UTMPX_H
+# include <utmpx.h>
+#endif /* HAVE_UTMPX_H */
+
+
+#ifndef USE_COMPILETIME_PIVOT
+# define USE_COMPILETIME_PIVOT 1
+#endif
+
+/*
+ * These routines (get_systime, step_systime, adj_systime) implement an
+ * interface between the system independent NTP clock and the Unix
+ * system clock in various architectures and operating systems. Time is
+ * a precious quantity in these routines and every effort is made to
+ * minimize errors by unbiased rounding and amortizing adjustment
+ * residues.
+ *
+ * In order to improve the apparent resolution, provide unbiased
+ * rounding and most importantly ensure that the readings cannot be
+ * predicted, the low-order unused portion of the time below the minimum
+ * time to read the clock is filled with an unbiased random fuzz.
+ *
+ * The sys_tick variable specifies the system clock tick interval in
+ * seconds, for stepping clocks, defined as those which return times
+ * less than MINSTEP greater than the previous reading. For systems that
+ * use a high-resolution counter such that each clock reading is always
+ * at least MINSTEP greater than the prior, sys_tick is the time to read
+ * the system clock.
+ *
+ * The sys_fuzz variable measures the minimum time to read the system
+ * clock, regardless of its precision.  When reading the system clock
+ * using get_systime() after sys_tick and sys_fuzz have been determined,
+ * ntpd ensures each unprocessed clock reading is no less than sys_fuzz
+ * later than the prior unprocessed reading, and then fuzzes the bits
+ * below sys_fuzz in the timestamp returned, ensuring each of its
+ * resulting readings is strictly later than the previous.
+ *
+ * When slewing the system clock using adj_systime() (with the kernel
+ * loop discipline unavailable or disabled), adjtime() offsets are
+ * quantized to sys_tick, if sys_tick is greater than sys_fuzz, which
+ * is to say if the OS presents a stepping clock.  Otherwise, offsets
+ * are quantized to the microsecond resolution of adjtime()'s timeval
+ * input.  The remaining correction sys_residual is carried into the
+ * next adjtime() and meanwhile is also factored into get_systime()
+ * readings.
+ */
+double	sys_tick = 0;		/* tick size or time to read (s) */
+double	sys_fuzz = 0;		/* min. time to read the clock (s) */
+long	sys_fuzz_nsec = 0;	/* min. time to read the clock (ns) */
+double	measured_tick;		/* non-overridable sys_tick (s) */
+double	sys_residual = 0;	/* adjustment residue (s) */
+int	trunc_os_clock;		/* sys_tick > measured_tick */
+time_stepped_callback	step_callback;
+
+#ifndef SIM
+/* perlinger@ntp.org: As 'get_sysime()' does it's own check for clock
+ * backstepping, this could probably become a local variable in
+ * 'get_systime()' and the cruft associated with communicating via a
+ * static value could be removed after the v4.2.8 release.
+ */
+static int lamport_violated;	/* clock was stepped back */
+#endif	/* !SIM */
+
+#ifdef DEBUG
+static int systime_init_done;
+# define DONE_SYSTIME_INIT()	systime_init_done = TRUE
+#else
+# define DONE_SYSTIME_INIT()	do {} while (FALSE)
+#endif
+
+#ifdef HAVE_SIGNALED_IO
+int using_sigio;
+#endif
+
+#ifdef SYS_WINNT
+CRITICAL_SECTION get_systime_cs;
+#endif
+
+
+void
+set_sys_fuzz(
+	double	fuzz_val
+	)
+{
+	sys_fuzz = fuzz_val;
+	INSIST(sys_fuzz >= 0);
+	INSIST(sys_fuzz <= 1.0);
+	sys_fuzz_nsec = (long)(sys_fuzz * 1e9 + 0.5);
+}
+
+
+void
+init_systime(void)
+{
+	INIT_GET_SYSTIME_CRITSEC();
+	INIT_WIN_PRECISE_TIME();
+	DONE_SYSTIME_INIT();
+}
+
+
+#ifndef SIM	/* ntpsim.c has get_systime() and friends for sim */
+
+static inline void
+get_ostime(
+	struct timespec *	tsp
+	)
+{
+	int	rc;
+	long	ticks;
+
+#if defined(HAVE_CLOCK_GETTIME)
+	rc = clock_gettime(CLOCK_REALTIME, tsp);
+#elif defined(HAVE_GETCLOCK)
+	rc = getclock(TIMEOFDAY, tsp);
+#else
+	struct timeval		tv;
+
+	rc = GETTIMEOFDAY(&tv, NULL);
+	tsp->tv_sec = tv.tv_sec;
+	tsp->tv_nsec = tv.tv_usec * 1000;
+#endif
+	if (rc < 0) {
+		msyslog(LOG_ERR, "read system clock failed: %m (%d)",
+			errno);
+		exit(1);
+	}
+
+	if (trunc_os_clock) {
+		ticks = (long)((tsp->tv_nsec * 1e-9) / sys_tick);
+		tsp->tv_nsec = (long)(ticks * 1e9 * sys_tick);
+	}
+}
+
+
+/*
+ * get_systime - return system time in NTP timestamp format.
+ */
+void
+get_systime(
+	l_fp *now		/* system time */
+	)
+{
+        static struct timespec  ts_last;        /* last sampled os time */
+	static struct timespec	ts_prev;	/* prior os time */
+	static l_fp		lfp_prev;	/* prior result */
+	static double		dfuzz_prev;	/* prior fuzz */
+	struct timespec ts;	/* seconds and nanoseconds */
+	struct timespec ts_min;	/* earliest permissible */
+	struct timespec ts_lam;	/* lamport fictional increment */
+	struct timespec ts_prev_log;	/* for msyslog only */
+	double	dfuzz;
+	double	ddelta;
+	l_fp	result;
+	l_fp	lfpfuzz;
+	l_fp	lfpdelta;
+
+	get_ostime(&ts);
+	DEBUG_REQUIRE(systime_init_done);
+	ENTER_GET_SYSTIME_CRITSEC();
+
+        /* First check if here was a Lamport violation, that is, two
+         * successive calls to 'get_ostime()' resulted in negative
+         * time difference. Use a few milliseconds of permissible
+         * tolerance -- being too sharp can hurt here. (This is intented
+         * for the Win32 target, where the HPC interpolation might
+         * introduce small steps backward. It should not be an issue on
+         * systems where get_ostime() results in a true syscall.)
+         */
+        if (cmp_tspec(add_tspec_ns(ts, 50000000), ts_last) < 0)
+                lamport_violated = 1;
+        ts_last = ts;
+
+	/*
+	 * After default_get_precision() has set a nonzero sys_fuzz,
+	 * ensure every reading of the OS clock advances by at least
+	 * sys_fuzz over the prior reading, thereby assuring each
+	 * fuzzed result is strictly later than the prior.  Limit the
+	 * necessary fiction to 1 second.
+	 */
+	if (!USING_SIGIO()) {
+		ts_min = add_tspec_ns(ts_prev, sys_fuzz_nsec);
+		if (cmp_tspec(ts, ts_min) < 0) {
+			ts_lam = sub_tspec(ts_min, ts);
+			if (ts_lam.tv_sec > 0 && !lamport_violated) {
+				msyslog(LOG_ERR,
+					"get_systime Lamport advance exceeds one second (%.9f)",
+					ts_lam.tv_sec +
+					    1e-9 * ts_lam.tv_nsec);
+				exit(1);
+			}
+			if (!lamport_violated)
+				ts = ts_min;
+		}
+		ts_prev_log = ts_prev;
+		ts_prev = ts;
+	} else {
+		/*
+		 * Quiet "ts_prev_log.tv_sec may be used uninitialized"
+		 * warning from x86 gcc 4.5.2.
+		 */
+		ZERO(ts_prev_log);
+	}
+
+	/* convert from timespec to l_fp fixed-point */
+	result = tspec_stamp_to_lfp(ts);
+
+	/*
+	 * Add in the fuzz.
+	 */
+	dfuzz = ntp_random() * 2. / FRAC * sys_fuzz;
+	DTOLFP(dfuzz, &lfpfuzz);
+	L_ADD(&result, &lfpfuzz);
+
+	/*
+	 * Ensure result is strictly greater than prior result (ignoring
+	 * sys_residual's effect for now) once sys_fuzz has been
+	 * determined.
+	 */
+	if (!USING_SIGIO()) {
+		if (!L_ISZERO(&lfp_prev) && !lamport_violated) {
+			if (!L_ISGTU(&result, &lfp_prev) &&
+			    sys_fuzz > 0.) {
+				msyslog(LOG_ERR, "ts_prev %s ts_min %s",
+					tspectoa(ts_prev_log),
+					tspectoa(ts_min));
+				msyslog(LOG_ERR, "ts %s", tspectoa(ts));
+				msyslog(LOG_ERR, "sys_fuzz %ld nsec, prior fuzz %.9f",
+					sys_fuzz_nsec, dfuzz_prev);
+				msyslog(LOG_ERR, "this fuzz %.9f",
+					dfuzz);
+				lfpdelta = lfp_prev;
+				L_SUB(&lfpdelta, &result);
+				LFPTOD(&lfpdelta, ddelta);
+				msyslog(LOG_ERR,
+					"prev get_systime 0x%x.%08x is %.9f later than 0x%x.%08x",
+					lfp_prev.l_ui, lfp_prev.l_uf,
+					ddelta, result.l_ui, result.l_uf);
+			}
+		}
+		lfp_prev = result;
+		dfuzz_prev = dfuzz;
+		if (lamport_violated) 
+			lamport_violated = FALSE;
+	}
+	LEAVE_GET_SYSTIME_CRITSEC();
+	*now = result;
+}
+
+
+/*
+ * adj_systime - adjust system time by the argument.
+ */
+#if !defined SYS_WINNT
+int				/* 0 okay, 1 error */
+adj_systime(
+	double now		/* adjustment (s) */
+	)
+{
+	struct timeval adjtv;	/* new adjustment */
+	struct timeval oadjtv;	/* residual adjustment */
+	double	quant;		/* quantize to multiples of */
+	double	dtemp;
+	long	ticks;
+	int	isneg = 0;
+
+	/*
+	 * The Windows port adj_systime() depends on being called each
+	 * second even when there's no additional correction, to allow
+	 * emulation of adjtime() behavior on top of an API that simply
+	 * sets the current rate.  This POSIX implementation needs to
+	 * ignore invocations with zero correction, otherwise ongoing
+	 * EVNT_NSET adjtime() can be aborted by a tiny adjtime()
+	 * triggered by sys_residual.
+	 */
+	if (0. == now)
+		return TRUE;
+
+	/*
+	 * Most Unix adjtime() implementations adjust the system clock
+	 * in microsecond quanta, but some adjust in 10-ms quanta. We
+	 * carefully round the adjustment to the nearest quantum, then
+	 * adjust in quanta and keep the residue for later.
+	 */
+	dtemp = now + sys_residual;
+	if (dtemp < 0) {
+		isneg = 1;
+		dtemp = -dtemp;
+	}
+	adjtv.tv_sec = (long)dtemp;
+	dtemp -= adjtv.tv_sec;
+	if (sys_tick > sys_fuzz)
+		quant = sys_tick;
+	else
+		quant = 1e-6;
+	ticks = (long)(dtemp / quant + .5);
+	adjtv.tv_usec = (long)(ticks * quant * 1e6);
+	dtemp -= adjtv.tv_usec / 1e6;
+	sys_residual = dtemp;
+
+	/*
+	 * Convert to signed seconds and microseconds for the Unix
+	 * adjtime() system call. Note we purposely lose the adjtime()
+	 * leftover.
+	 */
+	if (isneg) {
+		adjtv.tv_sec = -adjtv.tv_sec;
+		adjtv.tv_usec = -adjtv.tv_usec;
+		sys_residual = -sys_residual;
+	}
+	if (adjtv.tv_sec != 0 || adjtv.tv_usec != 0) {
+		if (adjtime(&adjtv, &oadjtv) < 0) {
+			msyslog(LOG_ERR, "adj_systime: %m");
+			return FALSE;
+		}
+	}
+	return TRUE;
+}
+#endif
+
+
+/*
+ * step_systime - step the system clock.
+ */
+
+int
+step_systime(
+	double step
+	)
+{
+	time_t pivot; /* for ntp era unfolding */
+	struct timeval timetv, tvlast, tvdiff;
+	struct timespec timets;
+	struct calendar jd;
+	l_fp fp_ofs, fp_sys; /* offset and target system time in FP */
+
+	/*
+	 * Get pivot time for NTP era unfolding. Since we don't step
+	 * very often, we can afford to do the whole calculation from
+	 * scratch. And we're not in the time-critical path yet.
+	 */
+#if SIZEOF_TIME_T > 4
+	/*
+	 * This code makes sure the resulting time stamp for the new
+	 * system time is in the 2^32 seconds starting at 1970-01-01,
+	 * 00:00:00 UTC.
+	 */
+	pivot = 0x80000000;
+#if USE_COMPILETIME_PIVOT
+	/*
+	 * Add the compile time minus 10 years to get a possible target
+	 * area of (compile time - 10 years) to (compile time + 126
+	 * years).  This should be sufficient for a given binary of
+	 * NTPD.
+	 */
+	if (ntpcal_get_build_date(&jd)) {
+		jd.year -= 10;
+		pivot += ntpcal_date_to_time(&jd);
+	} else {
+		msyslog(LOG_ERR,
+			"step-systime: assume 1970-01-01 as build date");
+	}
+#else
+	UNUSED_LOCAL(jd);
+#endif /* USE_COMPILETIME_PIVOT */
+#else
+	UNUSED_LOCAL(jd);
+	/* This makes sure the resulting time stamp is on or after
+	 * 1969-12-31/23:59:59 UTC and gives us additional two years,
+	 * from the change of NTP era in 2036 to the UNIX rollover in
+	 * 2038. (Minus one second, but that won't hurt.) We *really*
+	 * need a longer 'time_t' after that!  Or a different baseline,
+	 * but that would cause other serious trouble, too.
+	 */
+	pivot = 0x7FFFFFFF;
+#endif
+
+	/* get the complete jump distance as l_fp */
+	DTOLFP(sys_residual, &fp_sys);
+	DTOLFP(step,         &fp_ofs);
+	L_ADD(&fp_ofs, &fp_sys);
+
+	/* ---> time-critical path starts ---> */
+
+	/* get the current time as l_fp (without fuzz) and as struct timeval */
+	get_ostime(&timets);
+	fp_sys = tspec_stamp_to_lfp(timets);
+	tvlast.tv_sec = timets.tv_sec;
+	tvlast.tv_usec = (timets.tv_nsec + 500) / 1000;
+
+	/* get the target time as l_fp */
+	L_ADD(&fp_sys, &fp_ofs);
+
+	/* unfold the new system time */
+	timetv = lfp_stamp_to_tval(fp_sys, &pivot);
+
+	/* now set new system time */
+	if (ntp_set_tod(&timetv, NULL) != 0) {
+		msyslog(LOG_ERR, "step-systime: %m");
+		return FALSE;
+	}
+
+	/* <--- time-critical path ended with 'ntp_set_tod()' <--- */
+
+	sys_residual = 0;
+	lamport_violated = (step < 0);
+	if (step_callback)
+		(*step_callback)();
+
+#ifdef NEED_HPUX_ADJTIME
+	/*
+	 * CHECKME: is this correct when called by ntpdate?????
+	 */
+	_clear_adjtime();
+#endif
+
+	/*
+	 * FreeBSD, for example, has:
+	 * struct utmp {
+	 *	   char    ut_line[UT_LINESIZE];
+	 *	   char    ut_name[UT_NAMESIZE];
+	 *	   char    ut_host[UT_HOSTSIZE];
+	 *	   long    ut_time;
+	 * };
+	 * and appends line="|", name="date", host="", time for the OLD
+	 * and appends line="{", name="date", host="", time for the NEW
+	 * to _PATH_WTMP .
+	 *
+	 * Some OSes have utmp, some have utmpx.
+	 */
+
+	/*
+	 * Write old and new time entries in utmp and wtmp if step
+	 * adjustment is greater than one second.
+	 *
+	 * This might become even Uglier...
+	 */
+	tvdiff = abs_tval(sub_tval(timetv, tvlast));
+	if (tvdiff.tv_sec > 0) {
+#ifdef HAVE_UTMP_H
+		struct utmp ut;
+#endif
+#ifdef HAVE_UTMPX_H
+		struct utmpx utx;
+#endif
+
+#ifdef HAVE_UTMP_H
+		ZERO(ut);
+#endif
+#ifdef HAVE_UTMPX_H
+		ZERO(utx);
+#endif
+
+		/* UTMP */
+
+#ifdef UPDATE_UTMP
+# ifdef HAVE_PUTUTLINE
+#  ifndef _PATH_UTMP
+#   define _PATH_UTMP UTMP_FILE
+#  endif
+		utmpname(_PATH_UTMP);
+		ut.ut_type = OLD_TIME;
+		strlcpy(ut.ut_line, OTIME_MSG, sizeof(ut.ut_line));
+		ut.ut_time = tvlast.tv_sec;
+		setutent();
+		pututline(&ut);
+		ut.ut_type = NEW_TIME;
+		strlcpy(ut.ut_line, NTIME_MSG, sizeof(ut.ut_line));
+		ut.ut_time = timetv.tv_sec;
+		setutent();
+		pututline(&ut);
+		endutent();
+# else /* not HAVE_PUTUTLINE */
+# endif /* not HAVE_PUTUTLINE */
+#endif /* UPDATE_UTMP */
+
+		/* UTMPX */
+
+#ifdef UPDATE_UTMPX
+# ifdef HAVE_PUTUTXLINE
+		utx.ut_type = OLD_TIME;
+		strlcpy(utx.ut_line, OTIME_MSG, sizeof(utx.ut_line));
+		utx.ut_tv = tvlast;
+		setutxent();
+		pututxline(&utx);
+		utx.ut_type = NEW_TIME;
+		strlcpy(utx.ut_line, NTIME_MSG, sizeof(utx.ut_line));
+		utx.ut_tv = timetv;
+		setutxent();
+		pututxline(&utx);
+		endutxent();
+# else /* not HAVE_PUTUTXLINE */
+# endif /* not HAVE_PUTUTXLINE */
+#endif /* UPDATE_UTMPX */
+
+		/* WTMP */
+
+#ifdef UPDATE_WTMP
+# ifdef HAVE_PUTUTLINE
+#  ifndef _PATH_WTMP
+#   define _PATH_WTMP WTMP_FILE
+#  endif
+		utmpname(_PATH_WTMP);
+		ut.ut_type = OLD_TIME;
+		strlcpy(ut.ut_line, OTIME_MSG, sizeof(ut.ut_line));
+		ut.ut_time = tvlast.tv_sec;
+		setutent();
+		pututline(&ut);
+		ut.ut_type = NEW_TIME;
+		strlcpy(ut.ut_line, NTIME_MSG, sizeof(ut.ut_line));
+		ut.ut_time = timetv.tv_sec;
+		setutent();
+		pututline(&ut);
+		endutent();
+# else /* not HAVE_PUTUTLINE */
+# endif /* not HAVE_PUTUTLINE */
+#endif /* UPDATE_WTMP */
+
+		/* WTMPX */
+
+#ifdef UPDATE_WTMPX
+# ifdef HAVE_PUTUTXLINE
+		utx.ut_type = OLD_TIME;
+		utx.ut_tv = tvlast;
+		strlcpy(utx.ut_line, OTIME_MSG, sizeof(utx.ut_line));
+#  ifdef HAVE_UPDWTMPX
+		updwtmpx(WTMPX_FILE, &utx);
+#  else /* not HAVE_UPDWTMPX */
+#  endif /* not HAVE_UPDWTMPX */
+# else /* not HAVE_PUTUTXLINE */
+# endif /* not HAVE_PUTUTXLINE */
+# ifdef HAVE_PUTUTXLINE
+		utx.ut_type = NEW_TIME;
+		utx.ut_tv = timetv;
+		strlcpy(utx.ut_line, NTIME_MSG, sizeof(utx.ut_line));
+#  ifdef HAVE_UPDWTMPX
+		updwtmpx(WTMPX_FILE, &utx);
+#  else /* not HAVE_UPDWTMPX */
+#  endif /* not HAVE_UPDWTMPX */
+# else /* not HAVE_PUTUTXLINE */
+# endif /* not HAVE_PUTUTXLINE */
+#endif /* UPDATE_WTMPX */
+
+	}
+	return TRUE;
+}
+
+#endif	/* !SIM */
diff --git a/libntp/systime_s.c b/libntp/systime_s.c
new file mode 100644
index 0000000..8762122
--- /dev/null
+++ b/libntp/systime_s.c
@@ -0,0 +1,2 @@
+#define SIM
+#include "systime.c"
diff --git a/libntp/timetoa.c b/libntp/timetoa.c
new file mode 100644
index 0000000..c04d34e
--- /dev/null
+++ b/libntp/timetoa.c
@@ -0,0 +1,109 @@
+/*
+ * timetoa.c -- time_t related string formatting
+ *
+ * Written by Juergen Perlinger (perlinger@ntp.org) for the NTP project.
+ * The contents of 'html/copyright.html' apply.
+ *
+ * Printing a 'time_t' has a lot of portability pitfalls, due to it's
+ * opaque base type. The only requirement imposed by the standard is
+ * that it must be a numeric type. For all practical purposes it's a
+ * signed int, and 32 bits are common.
+ *
+ * Since the UN*X time epoch will cause a signed integer overflow for
+ * 32-bit signed int in the year 2038, implementations slowly move to
+ * 64bit base types for time_t, even in 32-bit environments.
+ *
+ * As the printf() family has no standardised type specifier for time_t,
+ * guessing the right output format specifier is a bit troublesome and
+ * best done with the help of the preprocessor and "config.h".
+ */
+
+#include "config.h"
+
+#include <math.h>
+#include <stdio.h>
+
+#include "timetoa.h"
+#include "ntp_assert.h"
+#include "lib_strbuf.h"
+
+/*
+ * Formatting to string needs at max 40 bytes (even with 64 bit time_t),
+ * so we check LIB_BUFLENGTH is big enough for our purpose.
+ */
+#if LIB_BUFLENGTH < 40
+# include "GRONK: LIB_BUFLENGTH is not sufficient"
+#endif
+
+/*
+ * general fractional timestamp formatting
+ *
+ * Many pieces of ntpd require a machine with two's complement
+ * representation of signed integers, so we don't go through the whole
+ * rigamarole of creating fully portable code here. But we have to stay
+ * away from signed integer overflow, as this might cause trouble even
+ * with two's complement representation.
+ */
+const char *
+format_time_fraction(
+	time_t	secs,
+	long	frac,
+	int	prec
+	)
+{
+	char *		cp;
+	u_int		prec_u;
+	u_time		secs_u;
+	u_int		u;
+	long		fraclimit;
+	int		notneg;	/* flag for non-negative value	*/
+	const char *	fmt;
+	ldiv_t		qr;
+
+	DEBUG_REQUIRE(prec != 0);
+
+	LIB_GETBUF(cp);
+	secs_u = (u_time)secs;
+	fmt = "-%" UTIME_FORMAT ".%0*ld";
+	
+	/* check if we need signed or unsigned mode */
+	notneg = (prec < 0);
+	prec_u = abs(prec);
+	/* fraclimit = (long)pow(10, prec_u); */
+	for (fraclimit = 10, u = 1; u < prec_u; u++) {
+		DEBUG_INSIST(fraclimit < fraclimit * 10);
+		fraclimit *= 10;
+	}
+
+	/*
+	 * Since conversion to string uses lots of divisions anyway,
+	 * there's no big extra penalty for normalisation. We do it for
+	 * consistency.
+	 */
+	if (frac < 0 || frac >= fraclimit) {
+		qr = ldiv(frac, fraclimit);
+		if (qr.rem < 0) {
+			qr.quot--;
+			qr.rem += fraclimit;
+		}
+		secs_u += (time_t)qr.quot;
+		frac = qr.rem;
+	}
+
+	/* Get the absolute value of the split representation time. */
+	notneg = notneg || ((time_t)secs_u >= 0);
+	if (notneg) {
+		fmt++;		/* skip '-' */
+	} else {
+		secs_u = ~secs_u;
+		if (0 == frac)
+			secs_u++;
+		else
+			frac = fraclimit - frac;
+	}
+
+	/* finally format the data and return the result */
+	snprintf(cp, LIB_BUFLENGTH, fmt, secs_u, prec_u, frac);
+	
+	return cp;
+}
diff --git a/libntp/timevalops.c b/libntp/timevalops.c
new file mode 100644
index 0000000..55f7bb5
--- /dev/null
+++ b/libntp/timevalops.c
@@ -0,0 +1,297 @@
+/*
+ * timevalops.c -- calculations on 'struct timeval' values
+ *
+ * Written by Juergen Perlinger (perlinger@ntp.org) for the NTP project.
+ * The contents of 'html/copyright.html' apply.
+ */
+
+#include <config.h>
+
+#include "timevalops.h"
+
+#ifdef USE_TSF_USEC_TABLES
+/*
+ * Tables to calculate time stamp fractions from usecs.  The entries
+ * in these tables are offset into using each of the two low order
+ * bytes plus the next 4 bits in a usec value (from a struct timeval).
+ * These are summed to produce the time stamp fraction.
+ *
+ * Note that these tables are rounded (not truncated) to the nearest
+ * low order bit in the fraction.  The timestamp computed should be
+ * +- 1.5 low order bits.
+ */
+
+const u_int32 ustotslo[256] = {
+	0x00000000, 0x000010c7, 0x0000218e, 0x00003255,
+	0x0000431c, 0x000053e3, 0x000064aa, 0x00007571,
+	0x00008638, 0x000096ff, 0x0000a7c6, 0x0000b88d,
+	0x0000c954, 0x0000da1b, 0x0000eae2, 0x0000fba9,
+	0x00010c6f, 0x00011d36, 0x00012dfd, 0x00013ec4,
+	0x00014f8b, 0x00016052, 0x00017119, 0x000181e0,
+	0x000192a7, 0x0001a36e, 0x0001b435, 0x0001c4fc,
+	0x0001d5c3, 0x0001e68a, 0x0001f751, 0x00020818,
+	0x000218df, 0x000229a6, 0x00023a6d, 0x00024b34,
+	0x00025bfb, 0x00026cc2, 0x00027d89, 0x00028e50,
+	0x00029f17, 0x0002afde, 0x0002c0a5, 0x0002d16c,
+	0x0002e233, 0x0002f2fa, 0x000303c0, 0x00031487,
+	0x0003254e, 0x00033615, 0x000346dc, 0x000357a3,
+	0x0003686a, 0x00037931, 0x000389f8, 0x00039abf,
+	0x0003ab86, 0x0003bc4d, 0x0003cd14, 0x0003dddb,
+	0x0003eea2, 0x0003ff69, 0x00041030, 0x000420f7,
+	0x000431be, 0x00044285, 0x0004534c, 0x00046413,
+	0x000474da, 0x000485a1, 0x00049668, 0x0004a72f,
+	0x0004b7f6, 0x0004c8bd, 0x0004d984, 0x0004ea4b,
+	0x0004fb12, 0x00050bd8, 0x00051c9f, 0x00052d66,
+	0x00053e2d, 0x00054ef4, 0x00055fbb, 0x00057082,
+	0x00058149, 0x00059210, 0x0005a2d7, 0x0005b39e,
+	0x0005c465, 0x0005d52c, 0x0005e5f3, 0x0005f6ba,
+	0x00060781, 0x00061848, 0x0006290f, 0x000639d6,
+	0x00064a9d, 0x00065b64, 0x00066c2b, 0x00067cf2,
+	0x00068db9, 0x00069e80, 0x0006af47, 0x0006c00e,
+	0x0006d0d5, 0x0006e19c, 0x0006f263, 0x0007032a,
+	0x000713f0, 0x000724b7, 0x0007357e, 0x00074645,
+	0x0007570c, 0x000767d3, 0x0007789a, 0x00078961,
+	0x00079a28, 0x0007aaef, 0x0007bbb6, 0x0007cc7d,
+	0x0007dd44, 0x0007ee0b, 0x0007fed2, 0x00080f99,
+	0x00082060, 0x00083127, 0x000841ee, 0x000852b5,
+	0x0008637c, 0x00087443, 0x0008850a, 0x000895d1,
+	0x0008a698, 0x0008b75f, 0x0008c826, 0x0008d8ed,
+	0x0008e9b4, 0x0008fa7b, 0x00090b41, 0x00091c08,
+	0x00092ccf, 0x00093d96, 0x00094e5d, 0x00095f24,
+	0x00096feb, 0x000980b2, 0x00099179, 0x0009a240,
+	0x0009b307, 0x0009c3ce, 0x0009d495, 0x0009e55c,
+	0x0009f623, 0x000a06ea, 0x000a17b1, 0x000a2878,
+	0x000a393f, 0x000a4a06, 0x000a5acd, 0x000a6b94,
+	0x000a7c5b, 0x000a8d22, 0x000a9de9, 0x000aaeb0,
+	0x000abf77, 0x000ad03e, 0x000ae105, 0x000af1cc,
+	0x000b0293, 0x000b1359, 0x000b2420, 0x000b34e7,
+	0x000b45ae, 0x000b5675, 0x000b673c, 0x000b7803,
+	0x000b88ca, 0x000b9991, 0x000baa58, 0x000bbb1f,
+	0x000bcbe6, 0x000bdcad, 0x000bed74, 0x000bfe3b,
+	0x000c0f02, 0x000c1fc9, 0x000c3090, 0x000c4157,
+	0x000c521e, 0x000c62e5, 0x000c73ac, 0x000c8473,
+	0x000c953a, 0x000ca601, 0x000cb6c8, 0x000cc78f,
+	0x000cd856, 0x000ce91d, 0x000cf9e4, 0x000d0aaa,
+	0x000d1b71, 0x000d2c38, 0x000d3cff, 0x000d4dc6,
+	0x000d5e8d, 0x000d6f54, 0x000d801b, 0x000d90e2,
+	0x000da1a9, 0x000db270, 0x000dc337, 0x000dd3fe,
+	0x000de4c5, 0x000df58c, 0x000e0653, 0x000e171a,
+	0x000e27e1, 0x000e38a8, 0x000e496f, 0x000e5a36,
+	0x000e6afd, 0x000e7bc4, 0x000e8c8b, 0x000e9d52,
+	0x000eae19, 0x000ebee0, 0x000ecfa7, 0x000ee06e,
+	0x000ef135, 0x000f01fc, 0x000f12c2, 0x000f2389,
+	0x000f3450, 0x000f4517, 0x000f55de, 0x000f66a5,
+	0x000f776c, 0x000f8833, 0x000f98fa, 0x000fa9c1,
+	0x000fba88, 0x000fcb4f, 0x000fdc16, 0x000fecdd,
+	0x000ffda4, 0x00100e6b, 0x00101f32, 0x00102ff9,
+	0x001040c0, 0x00105187, 0x0010624e, 0x00107315,
+	0x001083dc, 0x001094a3, 0x0010a56a, 0x0010b631
+};
+
+const u_int32 ustotsmid[256] = {
+	0x00000000, 0x0010c6f8, 0x00218def, 0x003254e7,
+	0x00431bdf, 0x0053e2d6, 0x0064a9ce, 0x007570c5,
+	0x008637bd, 0x0096feb5, 0x00a7c5ac, 0x00b88ca4,
+	0x00c9539c, 0x00da1a93, 0x00eae18b, 0x00fba882,
+	0x010c6f7a, 0x011d3672, 0x012dfd69, 0x013ec461,
+	0x014f8b59, 0x01605250, 0x01711948, 0x0181e03f,
+	0x0192a737, 0x01a36e2f, 0x01b43526, 0x01c4fc1e,
+	0x01d5c316, 0x01e68a0d, 0x01f75105, 0x020817fc,
+	0x0218def4, 0x0229a5ec, 0x023a6ce3, 0x024b33db,
+	0x025bfad3, 0x026cc1ca, 0x027d88c2, 0x028e4fb9,
+	0x029f16b1, 0x02afdda9, 0x02c0a4a0, 0x02d16b98,
+	0x02e23290, 0x02f2f987, 0x0303c07f, 0x03148777,
+	0x03254e6e, 0x03361566, 0x0346dc5d, 0x0357a355,
+	0x03686a4d, 0x03793144, 0x0389f83c, 0x039abf34,
+	0x03ab862b, 0x03bc4d23, 0x03cd141a, 0x03dddb12,
+	0x03eea20a, 0x03ff6901, 0x04102ff9, 0x0420f6f1,
+	0x0431bde8, 0x044284e0, 0x04534bd7, 0x046412cf,
+	0x0474d9c7, 0x0485a0be, 0x049667b6, 0x04a72eae,
+	0x04b7f5a5, 0x04c8bc9d, 0x04d98394, 0x04ea4a8c,
+	0x04fb1184, 0x050bd87b, 0x051c9f73, 0x052d666b,
+	0x053e2d62, 0x054ef45a, 0x055fbb51, 0x05708249,
+	0x05814941, 0x05921038, 0x05a2d730, 0x05b39e28,
+	0x05c4651f, 0x05d52c17, 0x05e5f30e, 0x05f6ba06,
+	0x060780fe, 0x061847f5, 0x06290eed, 0x0639d5e5,
+	0x064a9cdc, 0x065b63d4, 0x066c2acc, 0x067cf1c3,
+	0x068db8bb, 0x069e7fb2, 0x06af46aa, 0x06c00da2,
+	0x06d0d499, 0x06e19b91, 0x06f26289, 0x07032980,
+	0x0713f078, 0x0724b76f, 0x07357e67, 0x0746455f,
+	0x07570c56, 0x0767d34e, 0x07789a46, 0x0789613d,
+	0x079a2835, 0x07aaef2c, 0x07bbb624, 0x07cc7d1c,
+	0x07dd4413, 0x07ee0b0b, 0x07fed203, 0x080f98fa,
+	0x08205ff2, 0x083126e9, 0x0841ede1, 0x0852b4d9,
+	0x08637bd0, 0x087442c8, 0x088509c0, 0x0895d0b7,
+	0x08a697af, 0x08b75ea6, 0x08c8259e, 0x08d8ec96,
+	0x08e9b38d, 0x08fa7a85, 0x090b417d, 0x091c0874,
+	0x092ccf6c, 0x093d9664, 0x094e5d5b, 0x095f2453,
+	0x096feb4a, 0x0980b242, 0x0991793a, 0x09a24031,
+	0x09b30729, 0x09c3ce21, 0x09d49518, 0x09e55c10,
+	0x09f62307, 0x0a06e9ff, 0x0a17b0f7, 0x0a2877ee,
+	0x0a393ee6, 0x0a4a05de, 0x0a5accd5, 0x0a6b93cd,
+	0x0a7c5ac4, 0x0a8d21bc, 0x0a9de8b4, 0x0aaeafab,
+	0x0abf76a3, 0x0ad03d9b, 0x0ae10492, 0x0af1cb8a,
+	0x0b029281, 0x0b135979, 0x0b242071, 0x0b34e768,
+	0x0b45ae60, 0x0b567558, 0x0b673c4f, 0x0b780347,
+	0x0b88ca3e, 0x0b999136, 0x0baa582e, 0x0bbb1f25,
+	0x0bcbe61d, 0x0bdcad15, 0x0bed740c, 0x0bfe3b04,
+	0x0c0f01fc, 0x0c1fc8f3, 0x0c308feb, 0x0c4156e2,
+	0x0c521dda, 0x0c62e4d2, 0x0c73abc9, 0x0c8472c1,
+	0x0c9539b9, 0x0ca600b0, 0x0cb6c7a8, 0x0cc78e9f,
+	0x0cd85597, 0x0ce91c8f, 0x0cf9e386, 0x0d0aaa7e,
+	0x0d1b7176, 0x0d2c386d, 0x0d3cff65, 0x0d4dc65c,
+	0x0d5e8d54, 0x0d6f544c, 0x0d801b43, 0x0d90e23b,
+	0x0da1a933, 0x0db2702a, 0x0dc33722, 0x0dd3fe19,
+	0x0de4c511, 0x0df58c09, 0x0e065300, 0x0e1719f8,
+	0x0e27e0f0, 0x0e38a7e7, 0x0e496edf, 0x0e5a35d6,
+	0x0e6afcce, 0x0e7bc3c6, 0x0e8c8abd, 0x0e9d51b5,
+	0x0eae18ad, 0x0ebedfa4, 0x0ecfa69c, 0x0ee06d94,
+	0x0ef1348b, 0x0f01fb83, 0x0f12c27a, 0x0f238972,
+	0x0f34506a, 0x0f451761, 0x0f55de59, 0x0f66a551,
+	0x0f776c48, 0x0f883340, 0x0f98fa37, 0x0fa9c12f,
+	0x0fba8827, 0x0fcb4f1e, 0x0fdc1616, 0x0fecdd0e,
+	0x0ffda405, 0x100e6afd, 0x101f31f4, 0x102ff8ec,
+	0x1040bfe4, 0x105186db, 0x10624dd3, 0x107314cb,
+	0x1083dbc2, 0x1094a2ba, 0x10a569b1, 0x10b630a9
+};
+
+const u_int32 ustotshi[16] = {
+	0x00000000, 0x10c6f7a1, 0x218def41, 0x3254e6e2,
+	0x431bde83, 0x53e2d624, 0x64a9cdc4, 0x7570c565,
+	0x8637bd06, 0x96feb4a6, 0xa7c5ac47, 0xb88ca3e8,
+	0xc9539b89, 0xda1a9329, 0xeae18aca, 0xfba8826b
+};
+
+/*
+ * Tables to convert from a time stamp fraction to usecs.  Note that
+ * the units of these tables are actually (usec<<3).  We carry three
+ * guard bits so that the result can be properly truncated (or rounded)
+ * to be correct to the least significant bit.
+ *
+ * These tables are rounded.
+ */
+
+const u_int32 tstoushi[256] = {
+	0x000000, 0x007a12, 0x00f424, 0x016e36,
+	0x01e848, 0x02625a, 0x02dc6c, 0x03567e,
+	0x03d090, 0x044aa2, 0x04c4b4, 0x053ec6,
+	0x05b8d8, 0x0632ea, 0x06acfc, 0x07270e,
+	0x07a120, 0x081b32, 0x089544, 0x090f56,
+	0x098968, 0x0a037a, 0x0a7d8c, 0x0af79e,
+	0x0b71b0, 0x0bebc2, 0x0c65d4, 0x0cdfe6,
+	0x0d59f8, 0x0dd40a, 0x0e4e1c, 0x0ec82e,
+	0x0f4240, 0x0fbc52, 0x103664, 0x10b076,
+	0x112a88, 0x11a49a, 0x121eac, 0x1298be,
+	0x1312d0, 0x138ce2, 0x1406f4, 0x148106,
+	0x14fb18, 0x15752a, 0x15ef3c, 0x16694e,
+	0x16e360, 0x175d72, 0x17d784, 0x185196,
+	0x18cba8, 0x1945ba, 0x19bfcc, 0x1a39de,
+	0x1ab3f0, 0x1b2e02, 0x1ba814, 0x1c2226,
+	0x1c9c38, 0x1d164a, 0x1d905c, 0x1e0a6e,
+	0x1e8480, 0x1efe92, 0x1f78a4, 0x1ff2b6,
+	0x206cc8, 0x20e6da, 0x2160ec, 0x21dafe,
+	0x225510, 0x22cf22, 0x234934, 0x23c346,
+	0x243d58, 0x24b76a, 0x25317c, 0x25ab8e,
+	0x2625a0, 0x269fb2, 0x2719c4, 0x2793d6,
+	0x280de8, 0x2887fa, 0x29020c, 0x297c1e,
+	0x29f630, 0x2a7042, 0x2aea54, 0x2b6466,
+	0x2bde78, 0x2c588a, 0x2cd29c, 0x2d4cae,
+	0x2dc6c0, 0x2e40d2, 0x2ebae4, 0x2f34f6,
+	0x2faf08, 0x30291a, 0x30a32c, 0x311d3e,
+	0x319750, 0x321162, 0x328b74, 0x330586,
+	0x337f98, 0x33f9aa, 0x3473bc, 0x34edce,
+	0x3567e0, 0x35e1f2, 0x365c04, 0x36d616,
+	0x375028, 0x37ca3a, 0x38444c, 0x38be5e,
+	0x393870, 0x39b282, 0x3a2c94, 0x3aa6a6,
+	0x3b20b8, 0x3b9aca, 0x3c14dc, 0x3c8eee,
+	0x3d0900, 0x3d8312, 0x3dfd24, 0x3e7736,
+	0x3ef148, 0x3f6b5a, 0x3fe56c, 0x405f7e,
+	0x40d990, 0x4153a2, 0x41cdb4, 0x4247c6,
+	0x42c1d8, 0x433bea, 0x43b5fc, 0x44300e,
+	0x44aa20, 0x452432, 0x459e44, 0x461856,
+	0x469268, 0x470c7a, 0x47868c, 0x48009e,
+	0x487ab0, 0x48f4c2, 0x496ed4, 0x49e8e6,
+	0x4a62f8, 0x4add0a, 0x4b571c, 0x4bd12e,
+	0x4c4b40, 0x4cc552, 0x4d3f64, 0x4db976,
+	0x4e3388, 0x4ead9a, 0x4f27ac, 0x4fa1be,
+	0x501bd0, 0x5095e2, 0x510ff4, 0x518a06,
+	0x520418, 0x527e2a, 0x52f83c, 0x53724e,
+	0x53ec60, 0x546672, 0x54e084, 0x555a96,
+	0x55d4a8, 0x564eba, 0x56c8cc, 0x5742de,
+	0x57bcf0, 0x583702, 0x58b114, 0x592b26,
+	0x59a538, 0x5a1f4a, 0x5a995c, 0x5b136e,
+	0x5b8d80, 0x5c0792, 0x5c81a4, 0x5cfbb6,
+	0x5d75c8, 0x5defda, 0x5e69ec, 0x5ee3fe,
+	0x5f5e10, 0x5fd822, 0x605234, 0x60cc46,
+	0x614658, 0x61c06a, 0x623a7c, 0x62b48e,
+	0x632ea0, 0x63a8b2, 0x6422c4, 0x649cd6,
+	0x6516e8, 0x6590fa, 0x660b0c, 0x66851e,
+	0x66ff30, 0x677942, 0x67f354, 0x686d66,
+	0x68e778, 0x69618a, 0x69db9c, 0x6a55ae,
+	0x6acfc0, 0x6b49d2, 0x6bc3e4, 0x6c3df6,
+	0x6cb808, 0x6d321a, 0x6dac2c, 0x6e263e,
+	0x6ea050, 0x6f1a62, 0x6f9474, 0x700e86,
+	0x708898, 0x7102aa, 0x717cbc, 0x71f6ce,
+	0x7270e0, 0x72eaf2, 0x736504, 0x73df16,
+	0x745928, 0x74d33a, 0x754d4c, 0x75c75e,
+	0x764170, 0x76bb82, 0x773594, 0x77afa6,
+	0x7829b8, 0x78a3ca, 0x791ddc, 0x7997ee
+};
+
+const u_int32 tstousmid[256] = {
+	0x0000, 0x007a, 0x00f4, 0x016e, 0x01e8, 0x0262, 0x02dc, 0x0356,
+	0x03d1, 0x044b, 0x04c5, 0x053f, 0x05b9, 0x0633, 0x06ad, 0x0727,
+	0x07a1, 0x081b, 0x0895, 0x090f, 0x0989, 0x0a03, 0x0a7e, 0x0af8,
+	0x0b72, 0x0bec, 0x0c66, 0x0ce0, 0x0d5a, 0x0dd4, 0x0e4e, 0x0ec8,
+	0x0f42, 0x0fbc, 0x1036, 0x10b0, 0x112b, 0x11a5, 0x121f, 0x1299,
+	0x1313, 0x138d, 0x1407, 0x1481, 0x14fb, 0x1575, 0x15ef, 0x1669,
+	0x16e3, 0x175d, 0x17d8, 0x1852, 0x18cc, 0x1946, 0x19c0, 0x1a3a,
+	0x1ab4, 0x1b2e, 0x1ba8, 0x1c22, 0x1c9c, 0x1d16, 0x1d90, 0x1e0a,
+	0x1e84, 0x1eff, 0x1f79, 0x1ff3, 0x206d, 0x20e7, 0x2161, 0x21db,
+	0x2255, 0x22cf, 0x2349, 0x23c3, 0x243d, 0x24b7, 0x2531, 0x25ac,
+	0x2626, 0x26a0, 0x271a, 0x2794, 0x280e, 0x2888, 0x2902, 0x297c,
+	0x29f6, 0x2a70, 0x2aea, 0x2b64, 0x2bde, 0x2c59, 0x2cd3, 0x2d4d,
+	0x2dc7, 0x2e41, 0x2ebb, 0x2f35, 0x2faf, 0x3029, 0x30a3, 0x311d,
+	0x3197, 0x3211, 0x328b, 0x3306, 0x3380, 0x33fa, 0x3474, 0x34ee,
+	0x3568, 0x35e2, 0x365c, 0x36d6, 0x3750, 0x37ca, 0x3844, 0x38be,
+	0x3938, 0x39b3, 0x3a2d, 0x3aa7, 0x3b21, 0x3b9b, 0x3c15, 0x3c8f,
+	0x3d09, 0x3d83, 0x3dfd, 0x3e77, 0x3ef1, 0x3f6b, 0x3fe5, 0x405f,
+	0x40da, 0x4154, 0x41ce, 0x4248, 0x42c2, 0x433c, 0x43b6, 0x4430,
+	0x44aa, 0x4524, 0x459e, 0x4618, 0x4692, 0x470c, 0x4787, 0x4801,
+	0x487b, 0x48f5, 0x496f, 0x49e9, 0x4a63, 0x4add, 0x4b57, 0x4bd1,
+	0x4c4b, 0x4cc5, 0x4d3f, 0x4db9, 0x4e34, 0x4eae, 0x4f28, 0x4fa2,
+	0x501c, 0x5096, 0x5110, 0x518a, 0x5204, 0x527e, 0x52f8, 0x5372,
+	0x53ec, 0x5466, 0x54e1, 0x555b, 0x55d5, 0x564f, 0x56c9, 0x5743,
+	0x57bd, 0x5837, 0x58b1, 0x592b, 0x59a5, 0x5a1f, 0x5a99, 0x5b13,
+	0x5b8d, 0x5c08, 0x5c82, 0x5cfc, 0x5d76, 0x5df0, 0x5e6a, 0x5ee4,
+	0x5f5e, 0x5fd8, 0x6052, 0x60cc, 0x6146, 0x61c0, 0x623a, 0x62b5,
+	0x632f, 0x63a9, 0x6423, 0x649d, 0x6517, 0x6591, 0x660b, 0x6685,
+	0x66ff, 0x6779, 0x67f3, 0x686d, 0x68e7, 0x6962, 0x69dc, 0x6a56,
+	0x6ad0, 0x6b4a, 0x6bc4, 0x6c3e, 0x6cb8, 0x6d32, 0x6dac, 0x6e26,
+	0x6ea0, 0x6f1a, 0x6f94, 0x700f, 0x7089, 0x7103, 0x717d, 0x71f7,
+	0x7271, 0x72eb, 0x7365, 0x73df, 0x7459, 0x74d3, 0x754d, 0x75c7,
+	0x7641, 0x76bc, 0x7736, 0x77b0, 0x782a, 0x78a4, 0x791e, 0x7998
+};
+
+const u_int32 tstouslo[128] = {
+	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
+	0x08, 0x09, 0x0a, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,
+	0x0f, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16,
+	0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e,
+	0x1f, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25,
+	0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d,
+	0x2e, 0x2f, 0x30, 0x31, 0x32, 0x33, 0x33, 0x34,
+	0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c,
+	0x3d, 0x3e, 0x3f, 0x40, 0x41, 0x42, 0x43, 0x44,
+	0x45, 0x46, 0x47, 0x48, 0x48, 0x49, 0x4a, 0x4b,
+	0x4c, 0x4d, 0x4e, 0x4f, 0x50, 0x51, 0x52, 0x53,
+	0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b,
+	0x5c, 0x5c, 0x5d, 0x5e, 0x5f, 0x60, 0x61, 0x62,
+	0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a,
+	0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x71,
+	0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79
+};
+#else	/* !USE_TSF_USEC_TABLES follows */
+NONEMPTY_TRANSLATION_UNIT
+#endif	/* !USE_TSF_USEC_TABLES */
+/* -*- EOF -*- */
diff --git a/libntp/uglydate.c b/libntp/uglydate.c
new file mode 100644
index 0000000..66b5139
--- /dev/null
+++ b/libntp/uglydate.c
@@ -0,0 +1,51 @@
+/*
+ * uglydate - convert a time stamp to something barely readable
+ *	      The string returned is 37 characters long.
+ */
+#include <config.h>
+#include <stdio.h>
+
+#include "ntp_fp.h"
+#include "ntp_unixtime.h"
+#include "lib_strbuf.h"
+#include "ntp_stdlib.h"
+
+
+char *
+uglydate(
+	l_fp *ts
+	)
+{
+	char *bp;
+	char *timep;
+	struct tm *tm;
+	time_t sec;
+	long msec;
+	int year;
+
+	timep = ulfptoa(ts, 6);		/* returns max 17 characters */
+	LIB_GETBUF(bp);
+	sec = ts->l_ui - JAN_1970;
+	msec = ts->l_uf / 4294967;	/* fract / (2**32/1000) */
+	tm = gmtime(&sec);
+	if (ts->l_ui == 0) {
+		/*
+		 * Probably not a real good thing to do.  Oh, well.
+		 */
+		year = 0;
+		tm->tm_yday = 0;
+		tm->tm_hour = 0;
+		tm->tm_min = 0;
+		tm->tm_sec = 0;
+	} else {
+		year = tm->tm_year;
+		while (year >= 100)
+		    year -= 100;
+	}
+	snprintf(bp, LIB_BUFLENGTH,
+		 "%17s %02d:%03d:%02d:%02d:%02d.%03ld", timep, year,
+		 tm->tm_yday, tm->tm_hour, tm->tm_min, tm->tm_sec,
+		 msec);
+
+	return bp;
+}
diff --git a/libntp/vint64ops.c b/libntp/vint64ops.c
new file mode 100644
index 0000000..5adbebb
--- /dev/null
+++ b/libntp/vint64ops.c
@@ -0,0 +1,284 @@
+/*
+ * vint64ops.c - operations on 'vint64' values
+ *
+ * Written by Juergen Perlinger (perlinger@ntp.org) for the NTP project.
+ * The contents of 'html/copyright.html' apply.
+ * ----------------------------------------------------------------------
+ * This is an attempt to get the vint64 calculations stuff centralised.
+ */
+
+#include <config.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+#include <errno.h>
+
+#include "ntp_types.h"
+#include "ntp_fp.h"
+#include "vint64ops.h"
+
+/* ---------------------------------------------------------------------
+ * GCC is rather sticky with its 'const' attribute. We have to do it more
+ * explicit than with a cast if we want to get rid of a CONST qualifier.
+ * Greetings from the PASCAL world, where casting was only possible via
+ * untagged unions...
+ */
+static inline void*
+noconst(
+	const void* ptr
+	)
+{
+	union {
+		const void * cp;
+		void *       vp;
+	} tmp;
+	tmp.cp = ptr;
+	return tmp.vp;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+strtouv64(
+	const char * begp,
+	char **      endp,
+	int          base
+	)
+{
+	vint64  res;
+	u_char  digit;
+	int     sig, num;
+	const u_char *src;
+	
+	num = sig = 0;
+	src = (const u_char*)begp;
+	while (isspace(*src))
+		src++;
+
+	if (*src == '-') {
+		src++;
+		sig = 1;
+	} else  if (*src == '+') {
+		src++;
+	}
+
+	if (base == 0) {
+		base = 10;
+		if (*src == '0') {
+			base = 8;
+			if (toupper(*++src) == 'X') {
+				src++;
+				base = 16;
+			}
+		}
+	} else if (base == 16) { /* remove optional leading '0x' or '0X' */
+		if (src[0] == '0' && toupper(src[1]) == 'X')
+			src += 2;
+	} else if (base <= 2 || base > 36) {
+		memset(&res, 0xFF, sizeof(res));
+		errno = ERANGE;
+		return res;
+	}
+	
+	memset(&res, 0, sizeof(res));
+	while (*src) {
+		if (isdigit(*src))
+			digit = *src - '0';
+		else if (isupper(*src))
+			digit = *src - 'A' + 10;
+		else if (islower(*src))
+			digit = *src - 'a' + 10;
+		else
+			break;
+		if (digit >= base)
+			break;
+		num = 1;
+#if defined(HAVE_INT64)
+		res.Q_s = res.Q_s * base + digit;
+#else
+		/* res *= base, using 16x16->32 bit
+		 * multiplication. Slow but portable.
+		 */ 
+		{
+			uint32_t accu;
+			accu       = (uint32_t)res.W_s.ll * base;
+			res.W_s.ll = (uint16_t)accu;
+			accu       = (accu >> 16)
+			           + (uint32_t)res.W_s.lh * base;
+			res.W_s.lh = (uint16_t)accu;
+			/* the upper bits can be done in one step: */
+			res.D_s.hi = res.D_s.hi * base + (accu >> 16);
+		}
+		M_ADD(res.D_s.hi, res.D_s.lo, 0, digit);
+#endif
+		src++;
+	}
+	if (!num)
+		errno = EINVAL;
+	if (endp)
+		*endp = (char*)noconst(src);
+	if (sig)
+		M_NEG(res.D_s.hi, res.D_s.lo);
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+int
+icmpv64(
+	const vint64 * lhs,
+	const vint64 * rhs
+	)
+{
+	int res;
+
+#if defined(HAVE_INT64)
+	res = (lhs->q_s > rhs->q_s)
+	    - (lhs->q_s < rhs->q_s);
+#else	
+	res = (lhs->d_s.hi > rhs->d_s.hi)
+	    - (lhs->d_s.hi < rhs->d_s.hi);
+	if ( ! res )
+		res = (lhs->D_s.lo > rhs->D_s.lo)
+		    - (lhs->D_s.lo < rhs->D_s.lo);
+#endif
+
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+int
+ucmpv64(
+	const vint64 * lhs,
+	const vint64 * rhs
+	)
+{
+	int res;
+	
+#if defined(HAVE_INT64)
+	res = (lhs->Q_s > rhs->Q_s)
+	    - (lhs->Q_s < rhs->Q_s);
+#else	
+	res = (lhs->D_s.hi > rhs->D_s.hi)
+	    - (lhs->D_s.hi < rhs->D_s.hi);
+	if ( ! res )
+		res = (lhs->D_s.lo > rhs->D_s.lo)
+		    - (lhs->D_s.lo < rhs->D_s.lo);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+addv64(
+	const vint64 *lhs,
+	const vint64 *rhs
+	)
+{
+	vint64 res;
+
+#if defined(HAVE_INT64)
+	res.Q_s = lhs->Q_s + rhs->Q_s;
+#else
+	res = *lhs;
+	M_ADD(res.D_s.hi, res.D_s.lo, rhs->D_s.hi, rhs->D_s.lo);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+subv64(
+	const vint64 *lhs,
+	const vint64 *rhs
+	)
+{
+	vint64 res;
+
+#if defined(HAVE_INT64)
+	res.Q_s = lhs->Q_s - rhs->Q_s;
+#else
+	res = *lhs;
+	M_SUB(res.D_s.hi, res.D_s.lo, rhs->D_s.hi, rhs->D_s.lo);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+addv64i32(
+	const vint64 * lhs,
+	int32_t        rhs
+	)
+{
+	vint64 res;
+
+	res = *lhs;
+#if defined(HAVE_INT64)
+	res.q_s += rhs;
+#else
+	M_ADD(res.D_s.hi, res.D_s.lo,  -(rhs < 0), rhs);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+subv64i32(
+	const vint64 * lhs,
+	int32_t        rhs
+	)
+{
+	vint64 res;
+
+	res = *lhs;
+#if defined(HAVE_INT64)
+	res.q_s -= rhs;
+#else
+	M_SUB(res.D_s.hi, res.D_s.lo,  -(rhs < 0), rhs);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+addv64u32(
+	const vint64 * lhs,
+	uint32_t       rhs
+	)
+{
+	vint64 res;
+
+	res = *lhs;
+#if defined(HAVE_INT64)
+	res.Q_s += rhs;
+#else
+	M_ADD(res.D_s.hi, res.D_s.lo, 0, rhs);
+#endif
+	return res;
+}
+
+/* -------------------------------------------------------------------------*/
+
+vint64
+subv64u32(
+	const vint64 * lhs,
+	uint32_t       rhs
+	)
+{
+	vint64 res;
+
+	res = *lhs;
+#if defined(HAVE_INT64)
+	res.Q_s -= rhs;
+#else
+	M_SUB(res.D_s.hi, res.D_s.lo, 0, rhs);
+#endif
+	return res;
+}
diff --git a/libntp/work_fork.c b/libntp/work_fork.c
new file mode 100644
index 0000000..10329e7
--- /dev/null
+++ b/libntp/work_fork.c
@@ -0,0 +1,526 @@
+/*
+ * work_fork.c - fork implementation for blocking worker child.
+ */
+#include <config.h>
+#include "ntp_workimpl.h"
+
+#ifdef WORK_FORK
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+
+#include "iosignal.h"
+#include "ntp_stdlib.h"
+#include "ntp_malloc.h"
+#include "ntp_syslog.h"
+#include "ntpd.h"
+#include "ntp_io.h"
+#include "ntp_assert.h"
+#include "ntp_unixtime.h"
+#include "ntp_worker.h"
+
+/* === variables === */
+	int			worker_process;
+	addremove_io_fd_func	addremove_io_fd;
+static	volatile int		worker_sighup_received;
+
+/* === function prototypes === */
+static	void		fork_blocking_child(blocking_child *);
+static	RETSIGTYPE	worker_sighup(int);
+static	void		send_worker_home_atexit(void);
+static	void		cleanup_after_child(blocking_child *);
+
+/* === functions === */
+/*
+ * exit_worker()
+ *
+ * On some systems _exit() is preferred to exit() for forked children.
+ * For example, http://netbsd.gw.com/cgi-bin/man-cgi?fork++NetBSD-5.0
+ * recommends _exit() to avoid double-flushing C runtime stream buffers
+ * and also to avoid calling the parent's atexit() routines in the
+ * child.  On those systems WORKER_CHILD_EXIT is _exit.  Since _exit
+ * bypasses CRT cleanup, fflush() files we know might have output
+ * buffered.
+ */
+void
+exit_worker(
+	int	exitcode
+	)
+{
+	if (syslog_file != NULL)
+		fflush(syslog_file);
+	fflush(stdout);
+	fflush(stderr);
+	WORKER_CHILD_EXIT (exitcode);	/* space before ( required */
+}
+
+
+static RETSIGTYPE
+worker_sighup(
+	int sig
+	)
+{
+	if (SIGHUP == sig)
+		worker_sighup_received = 1;
+}
+
+
+int
+worker_sleep(
+	blocking_child *	c,
+	time_t			seconds
+	)
+{
+	u_int sleep_remain;
+
+	sleep_remain = (u_int)seconds;
+	do {
+		if (!worker_sighup_received)
+			sleep_remain = sleep(sleep_remain);
+		if (worker_sighup_received) {
+			TRACE(1, ("worker SIGHUP with %us left to sleep",
+				  sleep_remain));
+			worker_sighup_received = 0;
+			return -1;
+		}
+	} while (sleep_remain);
+
+	return 0;
+}
+
+
+void
+interrupt_worker_sleep(void)
+{
+	u_int			idx;
+	blocking_child *	c;
+	int			rc;
+
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+
+		if (NULL == c || c->reusable == TRUE)
+			continue;
+
+		rc = kill(c->pid, SIGHUP);
+		if (rc < 0)
+			msyslog(LOG_ERR,
+				"Unable to signal HUP to wake child pid %d: %m",
+				c->pid);
+	}
+}
+
+
+/*
+ * req_child_exit() runs in the parent.
+ */
+int
+req_child_exit(
+	blocking_child *	c
+	)
+{
+	if (-1 != c->req_write_pipe) {
+		close(c->req_write_pipe);
+		c->req_write_pipe = -1;
+		return 0;
+	}
+	return -1;
+}
+
+
+/*
+ * cleanup_after_child() runs in parent.
+ */
+static void
+cleanup_after_child(
+	blocking_child *	c
+	)
+{
+	if (-1 != c->req_write_pipe) {
+		close(c->req_write_pipe);
+		c->req_write_pipe = -1;
+	}
+	if (-1 != c->resp_read_pipe) {
+		(*addremove_io_fd)(c->resp_read_pipe, c->ispipe, TRUE);
+		close(c->resp_read_pipe);
+		c->resp_read_pipe = -1;
+	}
+	c->pid = 0;
+	c->resp_read_ctx = NULL;
+	DEBUG_INSIST(-1 == c->req_read_pipe);
+	DEBUG_INSIST(-1 == c->resp_write_pipe);
+	c->reusable = TRUE;
+}
+
+
+static void
+send_worker_home_atexit(void)
+{
+	u_int			idx;
+	blocking_child *	c;
+
+	if (worker_process)
+		return;
+
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+		if (NULL == c)
+			continue;
+		req_child_exit(c);
+	}
+}
+
+
+int
+send_blocking_req_internal(
+	blocking_child *	c,
+	blocking_pipe_header *	hdr,
+	void *			data
+	)
+{
+	int octets;
+	int rc;
+
+	DEBUG_REQUIRE(hdr != NULL);
+	DEBUG_REQUIRE(data != NULL);
+	DEBUG_REQUIRE(BLOCKING_REQ_MAGIC == hdr->magic_sig);
+
+	if (-1 == c->req_write_pipe) {
+		fork_blocking_child(c);
+		DEBUG_INSIST(-1 != c->req_write_pipe);
+	}
+
+	octets = sizeof(*hdr);
+	rc = write(c->req_write_pipe, hdr, octets);
+
+	if (rc == octets) {
+		octets = hdr->octets - sizeof(*hdr);
+		rc = write(c->req_write_pipe, data, octets);
+
+		if (rc == octets)
+			return 0;
+	}
+
+	if (rc < 0)
+		msyslog(LOG_ERR,
+			"send_blocking_req_internal: pipe write: %m");
+	else
+		msyslog(LOG_ERR,
+			"send_blocking_req_internal: short write %d of %d",
+			rc, octets);
+
+	exit(1);	/* otherwise would be return -1 */
+}
+
+
+blocking_pipe_header *
+receive_blocking_req_internal(
+	blocking_child *	c
+	)
+{
+	blocking_pipe_header	hdr;
+	blocking_pipe_header *	req;
+	int			rc;
+	long			octets;
+
+	DEBUG_REQUIRE(-1 != c->req_read_pipe);
+
+	req = NULL;
+
+	do {
+		rc = read(c->req_read_pipe, &hdr, sizeof(hdr));
+	} while (rc < 0 && EINTR == errno);
+
+	if (rc < 0) {
+		msyslog(LOG_ERR,
+			"receive_blocking_req_internal: pipe read %m");
+	} else if (0 == rc) {
+		TRACE(4, ("parent closed request pipe, child %d terminating\n",
+			  c->pid));
+	} else if (rc != sizeof(hdr)) {
+		msyslog(LOG_ERR,
+			"receive_blocking_req_internal: short header read %d of %lu",
+			rc, (u_long)sizeof(hdr));
+	} else {
+		INSIST(sizeof(hdr) < hdr.octets && hdr.octets < 4 * 1024);
+		req = emalloc(hdr.octets);
+		memcpy(req, &hdr, sizeof(*req));
+		octets = hdr.octets - sizeof(hdr);
+		rc = read(c->req_read_pipe, (char *)req + sizeof(*req),
+			  octets);
+
+		if (rc < 0)
+			msyslog(LOG_ERR,
+				"receive_blocking_req_internal: pipe data read %m");
+		else if (rc != octets)
+			msyslog(LOG_ERR,
+				"receive_blocking_req_internal: short read %d of %ld",
+				rc, octets);
+		else if (BLOCKING_REQ_MAGIC != req->magic_sig)
+			msyslog(LOG_ERR,
+				"receive_blocking_req_internal: packet header mismatch (0x%x)",
+				req->magic_sig);
+		else
+			return req;
+	}
+
+	if (req != NULL)
+		free(req);
+
+	return NULL;
+}
+
+
+int
+send_blocking_resp_internal(
+	blocking_child *	c,
+	blocking_pipe_header *	resp
+	)
+{
+	long	octets;
+	int	rc;
+
+	DEBUG_REQUIRE(-1 != c->resp_write_pipe);
+
+	octets = resp->octets;
+	rc = write(c->resp_write_pipe, resp, octets);
+	free(resp);
+
+	if (octets == rc)
+		return 0;
+
+	if (rc < 0)
+		TRACE(1, ("send_blocking_resp_internal: pipe write %m\n"));
+	else
+		TRACE(1, ("send_blocking_resp_internal: short write %d of %ld\n",
+			  rc, octets));
+
+	return -1;
+}
+
+
+blocking_pipe_header *
+receive_blocking_resp_internal(
+	blocking_child *	c
+	)
+{
+	blocking_pipe_header	hdr;
+	blocking_pipe_header *	resp;
+	int			rc;
+	long			octets;
+
+	DEBUG_REQUIRE(c->resp_read_pipe != -1);
+
+	resp = NULL;
+	rc = read(c->resp_read_pipe, &hdr, sizeof(hdr));
+
+	if (rc < 0) {
+		TRACE(1, ("receive_blocking_resp_internal: pipe read %m\n"));
+	} else if (0 == rc) {
+		/* this is the normal child exited indication */
+	} else if (rc != sizeof(hdr)) {
+		TRACE(1, ("receive_blocking_resp_internal: short header read %d of %lu\n",
+			  rc, (u_long)sizeof(hdr)));
+	} else if (BLOCKING_RESP_MAGIC != hdr.magic_sig) {
+		TRACE(1, ("receive_blocking_resp_internal: header mismatch (0x%x)\n",
+			  hdr.magic_sig));
+	} else {
+		INSIST(sizeof(hdr) < hdr.octets &&
+		       hdr.octets < 16 * 1024);
+		resp = emalloc(hdr.octets);
+		memcpy(resp, &hdr, sizeof(*resp));
+		octets = hdr.octets - sizeof(hdr);
+		rc = read(c->resp_read_pipe,
+			  (char *)resp + sizeof(*resp),
+			  octets);
+
+		if (rc < 0)
+			TRACE(1, ("receive_blocking_resp_internal: pipe data read %m\n"));
+		else if (rc < octets)
+			TRACE(1, ("receive_blocking_resp_internal: short read %d of %ld\n",
+				  rc, octets));
+		else
+			return resp;
+	}
+
+	cleanup_after_child(c);
+
+	if (resp != NULL)
+		free(resp);
+
+	return NULL;
+}
+
+
+#if defined(HAVE_DROPROOT) && defined(WORK_FORK)
+void
+fork_deferred_worker(void)
+{
+	u_int			idx;
+	blocking_child *	c;
+
+	REQUIRE(droproot && root_dropped);
+
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+		if (NULL == c)
+			continue;
+		if (-1 != c->req_write_pipe && 0 == c->pid)
+			fork_blocking_child(c);
+	}
+}
+#endif
+
+
+static void
+fork_blocking_child(
+	blocking_child *	c
+	)
+{
+	static int	atexit_installed;
+	static int	blocking_pipes[4] = { -1, -1, -1, -1 };
+	int		rc;
+	int		was_pipe;
+	int		is_pipe;
+	int		saved_errno;
+	int		childpid;
+	int		keep_fd;
+	int		fd;
+
+	/*
+	 * parent and child communicate via a pair of pipes.
+	 * 
+	 * 0 child read request
+	 * 1 parent write request
+	 * 2 parent read response
+	 * 3 child write response
+	 */
+	if (-1 == c->req_write_pipe) {
+		rc = pipe_socketpair(&blocking_pipes[0], &was_pipe);
+		if (0 != rc) {
+			saved_errno = errno;
+		} else {
+			rc = pipe_socketpair(&blocking_pipes[2], &is_pipe);
+			if (0 != rc) {
+				saved_errno = errno;
+				close(blocking_pipes[0]);
+				close(blocking_pipes[1]);
+			} else {
+				INSIST(was_pipe == is_pipe);
+			}
+		}
+		if (0 != rc) {
+			errno = saved_errno;
+			msyslog(LOG_ERR, "unable to create worker pipes: %m");
+			exit(1);
+		}
+
+		/*
+		 * Move the descriptors the parent will keep open out of the
+		 * low descriptors preferred by C runtime buffered FILE *.
+		 */
+		c->req_write_pipe = move_fd(blocking_pipes[1]);
+		c->resp_read_pipe = move_fd(blocking_pipes[2]);
+		/*
+		 * wake any worker child on orderly shutdown of the
+		 * daemon so that it can notice the broken pipes and
+		 * go away promptly.
+		 */
+		if (!atexit_installed) {
+			atexit(&send_worker_home_atexit);
+			atexit_installed = TRUE;
+		}
+	}
+
+#ifdef HAVE_DROPROOT
+	/* defer the fork until after root is dropped */
+	if (droproot && !root_dropped)
+		return;
+#endif
+	if (syslog_file != NULL)
+		fflush(syslog_file);
+	fflush(stdout);
+	fflush(stderr);
+
+	signal_no_reset(SIGCHLD, SIG_IGN);
+
+	childpid = fork();
+	if (-1 == childpid) {
+		msyslog(LOG_ERR, "unable to fork worker: %m");
+		exit(1);
+	}
+
+	if (childpid) {
+		/* this is the parent */
+		TRACE(1, ("forked worker child (pid %d)\n", childpid));
+		c->pid = childpid;
+		c->ispipe = is_pipe;
+
+		/* close the child's pipe descriptors. */
+		close(blocking_pipes[0]);
+		close(blocking_pipes[3]);
+
+		memset(blocking_pipes, -1, sizeof(blocking_pipes));
+
+		/* wire into I/O loop */
+		(*addremove_io_fd)(c->resp_read_pipe, is_pipe, FALSE);
+
+		return;		/* parent returns */
+	}
+
+	/*
+	 * The parent gets the child pid as the return value of fork().
+	 * The child must work for it.
+	 */
+	c->pid = getpid();
+	worker_process = TRUE;
+
+	/*
+	 * In the child, close all files except stdin, stdout, stderr,
+	 * and the two child ends of the pipes.
+	 */
+	DEBUG_INSIST(-1 == c->req_read_pipe);
+	DEBUG_INSIST(-1 == c->resp_write_pipe);
+	c->req_read_pipe = blocking_pipes[0];
+	c->resp_write_pipe = blocking_pipes[3];
+
+	kill_asyncio(0);
+	closelog();
+	if (syslog_file != NULL) {
+		fclose(syslog_file);
+		syslog_file = NULL;
+		syslogit = TRUE;
+	}
+	keep_fd = max(c->req_read_pipe, c->resp_write_pipe);
+	for (fd = 3; fd < keep_fd; fd++)
+		if (fd != c->req_read_pipe && 
+		    fd != c->resp_write_pipe)
+			close(fd);
+	close_all_beyond(keep_fd);
+	/*
+	 * We get signals from refclock serial I/O on NetBSD in the
+	 * worker if we do not reset SIGIO's handler to the default.
+	 * It is not conditionalized for NetBSD alone because on
+	 * systems where it is not needed, it is harmless, and that
+	 * allows us to handle unknown others with NetBSD behavior.
+	 * [Bug 1386]
+	 */
+#if defined(USE_SIGIO)
+	signal_no_reset(SIGIO, SIG_DFL);
+#elif defined(USE_SIGPOLL)
+	signal_no_reset(SIGPOLL, SIG_DFL);
+#endif
+	signal_no_reset(SIGHUP, worker_sighup);
+	init_logging("ntp_intres", 0, FALSE);
+	setup_logfile(NULL);
+
+	/*
+	 * And now back to the portable code
+	 */
+	exit_worker(blocking_child_common(c));
+}
+
+
+#else	/* !WORK_FORK follows */
+char work_fork_nonempty_compilation_unit;
+#endif
diff --git a/libntp/work_thread.c b/libntp/work_thread.c
new file mode 100644
index 0000000..38d8747
--- /dev/null
+++ b/libntp/work_thread.c
@@ -0,0 +1,726 @@
+/*
+ * work_thread.c - threads implementation for blocking worker child.
+ */
+#include <config.h>
+#include "ntp_workimpl.h"
+
+#ifdef WORK_THREAD
+
+#include <stdio.h>
+#include <ctype.h>
+#include <signal.h>
+#ifndef SYS_WINNT
+#include <pthread.h>
+#endif
+
+#include "ntp_stdlib.h"
+#include "ntp_malloc.h"
+#include "ntp_syslog.h"
+#include "ntpd.h"
+#include "ntp_io.h"
+#include "ntp_assert.h"
+#include "ntp_unixtime.h"
+#include "timespecops.h"
+#include "ntp_worker.h"
+
+#define CHILD_EXIT_REQ	((blocking_pipe_header *)(intptr_t)-1)
+#define CHILD_GONE_RESP	CHILD_EXIT_REQ
+#define WORKITEMS_ALLOC_INC	16
+#define RESPONSES_ALLOC_INC	4
+
+#ifndef THREAD_MINSTACKSIZE
+#define THREAD_MINSTACKSIZE	(64U * 1024)
+#endif
+
+#ifndef DEVOLATILE
+#define DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var))
+#endif
+
+#ifdef SYS_WINNT
+# define thread_exit(c)	_endthreadex(c)
+# define tickle_sem	SetEvent
+#else
+# define thread_exit(c)	pthread_exit((void*)(size_t)(c))
+# define tickle_sem	sem_post
+#endif
+
+#ifdef WORK_PIPE
+addremove_io_fd_func		addremove_io_fd;
+#else
+addremove_io_semaphore_func	addremove_io_semaphore;
+#endif
+
+static	void	start_blocking_thread(blocking_child *);
+static	void	start_blocking_thread_internal(blocking_child *);
+static	void	prepare_child_sems(blocking_child *);
+static	int	wait_for_sem(sem_ref, struct timespec *);
+static	void	ensure_workitems_empty_slot(blocking_child *);
+static	void	ensure_workresp_empty_slot(blocking_child *);
+static	int	queue_req_pointer(blocking_child *, blocking_pipe_header *);
+static	void	cleanup_after_child(blocking_child *);
+#ifdef SYS_WINNT
+u_int	WINAPI	blocking_thread(void *);
+#else
+void *		blocking_thread(void *);
+#endif
+#ifndef SYS_WINNT
+static	void	block_thread_signals(sigset_t *);
+#endif
+
+
+void
+exit_worker(
+	int	exitcode
+	)
+{
+	thread_exit(exitcode);	/* see #define thread_exit */
+}
+
+
+int
+worker_sleep(
+	blocking_child *	c,
+	time_t			seconds
+	)
+{
+	struct timespec	until;
+	int		rc;
+
+# ifdef HAVE_CLOCK_GETTIME
+	if (0 != clock_gettime(CLOCK_REALTIME, &until)) {
+		msyslog(LOG_ERR, "worker_sleep: clock_gettime() failed: %m");
+		return -1;
+	}
+# else
+	if (0 != getclock(TIMEOFDAY, &until)) {
+		msyslog(LOG_ERR, "worker_sleep: getclock() failed: %m");
+		return -1;
+	}
+# endif
+	until.tv_sec += seconds;
+	do {
+		rc = wait_for_sem(c->wake_scheduled_sleep, &until);
+	} while (-1 == rc && EINTR == errno);
+	if (0 == rc)
+		return -1;
+	if (-1 == rc && ETIMEDOUT == errno)
+		return 0;
+	msyslog(LOG_ERR, "worker_sleep: sem_timedwait: %m");
+	return -1;
+}
+
+
+void
+interrupt_worker_sleep(void)
+{
+	u_int			idx;
+	blocking_child *	c;
+
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+		if (NULL == c || NULL == c->wake_scheduled_sleep)
+			continue;
+		tickle_sem(c->wake_scheduled_sleep);
+	}
+}
+
+
+static void
+ensure_workitems_empty_slot(
+	blocking_child *c
+	)
+{
+	const size_t	each = sizeof(blocking_children[0]->workitems[0]);
+	size_t		new_alloc;
+	size_t		old_octets;
+	size_t		new_octets;
+	void *		nonvol_workitems;
+
+
+	if (c->workitems != NULL &&
+	    NULL == c->workitems[c->next_workitem])
+		return;
+
+	new_alloc = c->workitems_alloc + WORKITEMS_ALLOC_INC;
+	old_octets = c->workitems_alloc * each;
+	new_octets = new_alloc * each;
+	nonvol_workitems = DEVOLATILE(void *, c->workitems);
+	c->workitems = erealloc_zero(nonvol_workitems, new_octets,
+				     old_octets);
+	if (0 == c->next_workitem)
+		c->next_workitem = c->workitems_alloc;
+	c->workitems_alloc = new_alloc;
+}
+
+
+static void
+ensure_workresp_empty_slot(
+	blocking_child *c
+	)
+{
+	const size_t	each = sizeof(blocking_children[0]->responses[0]);
+	size_t		new_alloc;
+	size_t		old_octets;
+	size_t		new_octets;
+	void *		nonvol_responses;
+
+	if (c->responses != NULL &&
+	    NULL == c->responses[c->next_response])
+		return;
+
+	new_alloc = c->responses_alloc + RESPONSES_ALLOC_INC;
+	old_octets = c->responses_alloc * each;
+	new_octets = new_alloc * each;
+	nonvol_responses = DEVOLATILE(void *, c->responses);
+	c->responses = erealloc_zero(nonvol_responses, new_octets,
+				     old_octets);
+	if (0 == c->next_response)
+		c->next_response = c->responses_alloc;
+	c->responses_alloc = new_alloc;
+}
+
+
+/*
+ * queue_req_pointer() - append a work item or idle exit request to
+ *			 blocking_workitems[].
+ */
+static int
+queue_req_pointer(
+	blocking_child	*	c,
+	blocking_pipe_header *	hdr
+	)
+{
+	c->workitems[c->next_workitem] = hdr;
+	c->next_workitem = (1 + c->next_workitem) % c->workitems_alloc;
+
+	/*
+	 * We only want to signal the wakeup event if the child is
+	 * blocking on it, which is indicated by setting the blocking
+	 * event.  Wait with zero timeout to test.
+	 */
+	/* !!!! if (WAIT_OBJECT_0 == WaitForSingleObject(c->child_is_blocking, 0)) */
+		tickle_sem(c->blocking_req_ready);
+
+	return 0;
+}
+
+
+int
+send_blocking_req_internal(
+	blocking_child *	c,
+	blocking_pipe_header *	hdr,
+	void *			data
+	)
+{
+	blocking_pipe_header *	threadcopy;
+	size_t			payload_octets;
+
+	REQUIRE(hdr != NULL);
+	REQUIRE(data != NULL);
+	DEBUG_REQUIRE(BLOCKING_REQ_MAGIC == hdr->magic_sig);
+
+	if (hdr->octets <= sizeof(*hdr))
+		return 1;	/* failure */
+	payload_octets = hdr->octets - sizeof(*hdr);
+
+	ensure_workitems_empty_slot(c);
+	if (NULL == c->thread_ref) {
+		ensure_workresp_empty_slot(c);
+		start_blocking_thread(c);
+	}
+
+	threadcopy = emalloc(hdr->octets);
+	memcpy(threadcopy, hdr, sizeof(*hdr));
+	memcpy((char *)threadcopy + sizeof(*hdr), data, payload_octets);
+
+	return queue_req_pointer(c, threadcopy);
+}
+
+
+blocking_pipe_header *
+receive_blocking_req_internal(
+	blocking_child *	c
+	)
+{
+	blocking_pipe_header *	req;
+	int			rc;
+
+	/*
+	 * Child blocks here when idle.  SysV semaphores maintain a
+	 * count and release from sem_wait() only when it reaches 0.
+	 * Windows auto-reset events are simpler, and multiple SetEvent
+	 * calls before any thread waits result in a single wakeup.
+	 * On Windows, the child drains all workitems each wakeup, while
+	 * with SysV semaphores wait_sem() is used before each item.
+	 */
+#ifdef SYS_WINNT
+	while (NULL == c->workitems[c->next_workeritem]) {
+		/* !!!! SetEvent(c->child_is_blocking); */
+		rc = wait_for_sem(c->blocking_req_ready, NULL);
+		INSIST(0 == rc);
+		/* !!!! ResetEvent(c->child_is_blocking); */
+	}
+#else
+	do {
+		rc = wait_for_sem(c->blocking_req_ready, NULL);
+	} while (-1 == rc && EINTR == errno);
+	INSIST(0 == rc);
+#endif
+
+	req = c->workitems[c->next_workeritem];
+	INSIST(NULL != req);
+	c->workitems[c->next_workeritem] = NULL;
+	c->next_workeritem = (1 + c->next_workeritem) %
+				c->workitems_alloc;
+
+	if (CHILD_EXIT_REQ == req) {	/* idled out */
+		send_blocking_resp_internal(c, CHILD_GONE_RESP);
+		req = NULL;
+	}
+
+	return req;
+}
+
+
+int
+send_blocking_resp_internal(
+	blocking_child *	c,
+	blocking_pipe_header *	resp
+	)
+{
+	ensure_workresp_empty_slot(c);
+
+	c->responses[c->next_response] = resp;
+	c->next_response = (1 + c->next_response) % c->responses_alloc;
+
+#ifdef WORK_PIPE
+	write(c->resp_write_pipe, "", 1);
+#else
+	tickle_sem(c->blocking_response_ready);
+#endif
+
+	return 0;
+}
+
+
+#ifndef WORK_PIPE
+void
+handle_blocking_resp_sem(
+	void *	context
+	)
+{
+	HANDLE			ready;
+	blocking_child *	c;
+	u_int			idx;
+
+	ready = (HANDLE)context;
+	c = NULL;
+	for (idx = 0; idx < blocking_children_alloc; idx++) {
+		c = blocking_children[idx];
+		if (c != NULL && c->thread_ref != NULL &&
+		    ready == c->blocking_response_ready)
+			break;
+	}
+	if (idx < blocking_children_alloc)
+		process_blocking_resp(c);
+}
+#endif	/* !WORK_PIPE */
+
+
+blocking_pipe_header *
+receive_blocking_resp_internal(
+	blocking_child *	c
+	)
+{
+	blocking_pipe_header *	removed;
+#ifdef WORK_PIPE
+	int			rc;
+	char			scratch[32];
+
+	do {
+		rc = read(c->resp_read_pipe, scratch, sizeof(scratch));
+	} while (-1 == rc && EINTR == errno);
+#endif
+	removed = c->responses[c->next_workresp];
+	if (NULL != removed) {
+		c->responses[c->next_workresp] = NULL;
+		c->next_workresp = (1 + c->next_workresp) %
+				   c->responses_alloc;
+		DEBUG_ENSURE(CHILD_GONE_RESP == removed ||
+			     BLOCKING_RESP_MAGIC == removed->magic_sig);
+	}
+	if (CHILD_GONE_RESP == removed) {
+		cleanup_after_child(c);
+		removed = NULL;
+	}
+
+	return removed;
+}
+
+
+static void
+start_blocking_thread(
+	blocking_child *	c
+	)
+{
+
+	DEBUG_INSIST(!c->reusable);
+
+	prepare_child_sems(c);
+	start_blocking_thread_internal(c);
+}
+
+
+static void
+start_blocking_thread_internal(
+	blocking_child *	c
+	)
+#ifdef SYS_WINNT
+{
+	thr_ref	blocking_child_thread;
+	u_int	blocking_thread_id;
+	BOOL	resumed;
+
+	(*addremove_io_semaphore)(c->blocking_response_ready, FALSE);
+	blocking_child_thread =
+		(HANDLE)_beginthreadex(
+			NULL,
+			0,
+			&blocking_thread,
+			c,
+			CREATE_SUSPENDED,
+			&blocking_thread_id);
+
+	if (NULL == blocking_child_thread) {
+		msyslog(LOG_ERR, "start blocking thread failed: %m");
+		exit(-1);
+	}
+	c->thread_id = blocking_thread_id;
+	c->thread_ref = blocking_child_thread;
+	/* remember the thread priority is only within the process class */
+	if (!SetThreadPriority(blocking_child_thread,
+			       THREAD_PRIORITY_BELOW_NORMAL))
+		msyslog(LOG_ERR, "Error lowering blocking thread priority: %m");
+
+	resumed = ResumeThread(blocking_child_thread);
+	DEBUG_INSIST(resumed);
+}
+#else	/* pthreads start_blocking_thread_internal() follows */
+{
+# ifdef NEED_PTHREAD_INIT
+	static int	pthread_init_called;
+# endif
+	pthread_attr_t	thr_attr;
+	int		rc;
+	int		saved_errno;
+	int		pipe_ends[2];	/* read then write */
+	int		is_pipe;
+	int		flags;
+	size_t		stacksize;
+	sigset_t	saved_sig_mask;
+
+# ifdef NEED_PTHREAD_INIT
+	/*
+	 * from lib/isc/unix/app.c:
+	 * BSDI 3.1 seg faults in pthread_sigmask() if we don't do this.
+	 */
+	if (!pthread_init_called) {
+		pthread_init();
+		pthread_init_called = TRUE;
+	}
+# endif
+
+	rc = pipe_socketpair(&pipe_ends[0], &is_pipe);
+	if (0 != rc) {
+		msyslog(LOG_ERR, "start_blocking_thread: pipe_socketpair() %m");
+		exit(1);
+	}
+	c->resp_read_pipe = move_fd(pipe_ends[0]);
+	c->resp_write_pipe = move_fd(pipe_ends[1]);
+	c->ispipe = is_pipe;
+	flags = fcntl(c->resp_read_pipe, F_GETFL, 0);
+	if (-1 == flags) {
+		msyslog(LOG_ERR, "start_blocking_thread: fcntl(F_GETFL) %m");
+		exit(1);
+	}
+	rc = fcntl(c->resp_read_pipe, F_SETFL, O_NONBLOCK | flags);
+	if (-1 == rc) {
+		msyslog(LOG_ERR,
+			"start_blocking_thread: fcntl(F_SETFL, O_NONBLOCK) %m");
+		exit(1);
+	}
+	(*addremove_io_fd)(c->resp_read_pipe, c->ispipe, FALSE);
+	pthread_attr_init(&thr_attr);
+	pthread_attr_setdetachstate(&thr_attr, PTHREAD_CREATE_DETACHED);
+#if defined(HAVE_PTHREAD_ATTR_GETSTACKSIZE) && \
+    defined(HAVE_PTHREAD_ATTR_SETSTACKSIZE)
+	rc = pthread_attr_getstacksize(&thr_attr, &stacksize);
+	if (-1 == rc) {
+		msyslog(LOG_ERR,
+			"start_blocking_thread: pthread_attr_getstacksize %m");
+	} else if (stacksize < THREAD_MINSTACKSIZE) {
+		rc = pthread_attr_setstacksize(&thr_attr,
+					       THREAD_MINSTACKSIZE);
+		if (-1 == rc)
+			msyslog(LOG_ERR,
+				"start_blocking_thread: pthread_attr_setstacksize(0x%lx -> 0x%lx) %m",
+				(u_long)stacksize,
+				(u_long)THREAD_MINSTACKSIZE);
+	}
+#else
+	UNUSED_ARG(stacksize);
+#endif
+#if defined(PTHREAD_SCOPE_SYSTEM) && defined(NEED_PTHREAD_SCOPE_SYSTEM)
+	pthread_attr_setscope(&thr_attr, PTHREAD_SCOPE_SYSTEM);
+#endif
+	c->thread_ref = emalloc_zero(sizeof(*c->thread_ref));
+	block_thread_signals(&saved_sig_mask);
+	rc = pthread_create(c->thread_ref, &thr_attr,
+			    &blocking_thread, c);
+	saved_errno = errno;
+	pthread_sigmask(SIG_SETMASK, &saved_sig_mask, NULL);
+	pthread_attr_destroy(&thr_attr);
+	if (0 != rc) {
+		errno = saved_errno;
+		msyslog(LOG_ERR, "pthread_create() blocking child: %m");
+		exit(1);
+	}
+}
+#endif
+
+
+/*
+ * block_thread_signals()
+ *
+ * Temporarily block signals used by ntpd main thread, so that signal
+ * mask inherited by child threads leaves them blocked.  Returns prior
+ * active signal mask via pmask, to be restored by the main thread
+ * after pthread_create().
+ */
+#ifndef SYS_WINNT
+void
+block_thread_signals(
+	sigset_t *	pmask
+	)
+{
+	sigset_t	block;
+
+	sigemptyset(&block);
+# ifdef HAVE_SIGNALED_IO
+#  ifdef SIGIO
+	sigaddset(&block, SIGIO);
+#  endif
+#  ifdef SIGPOLL
+	sigaddset(&block, SIGPOLL);
+#  endif
+# endif	/* HAVE_SIGNALED_IO */
+	sigaddset(&block, SIGALRM);
+	sigaddset(&block, MOREDEBUGSIG);
+	sigaddset(&block, LESSDEBUGSIG);
+# ifdef SIGDIE1
+	sigaddset(&block, SIGDIE1);
+# endif
+# ifdef SIGDIE2
+	sigaddset(&block, SIGDIE2);
+# endif
+# ifdef SIGDIE3
+	sigaddset(&block, SIGDIE3);
+# endif
+# ifdef SIGDIE4
+	sigaddset(&block, SIGDIE4);
+# endif
+# ifdef SIGBUS
+	sigaddset(&block, SIGBUS);
+# endif
+	sigemptyset(pmask);
+	pthread_sigmask(SIG_BLOCK, &block, pmask);
+}
+#endif	/* !SYS_WINNT */
+
+
+/*
+ * prepare_child_sems()
+ *
+ * create sync events (semaphores)
+ * child_is_blocking initially unset
+ * blocking_req_ready initially unset
+ *
+ * Child waits for blocking_req_ready to be set after
+ * setting child_is_blocking.  blocking_req_ready and
+ * blocking_response_ready are auto-reset, so wake one
+ * waiter and become unset (unsignalled) in one operation.
+ */
+static void
+prepare_child_sems(
+	blocking_child *c
+	)
+#ifdef SYS_WINNT
+{
+	if (NULL == c->blocking_req_ready) {
+		/* manual reset using ResetEvent() */
+		/* !!!! c->child_is_blocking = CreateEvent(NULL, TRUE, FALSE, NULL); */
+		/* auto reset - one thread released from wait each set */
+		c->blocking_req_ready = CreateEvent(NULL, FALSE, FALSE, NULL);
+		c->blocking_response_ready = CreateEvent(NULL, FALSE, FALSE, NULL);
+		c->wake_scheduled_sleep = CreateEvent(NULL, FALSE, FALSE, NULL);
+	} else {
+		/* !!!! ResetEvent(c->child_is_blocking); */
+		/* ResetEvent(c->blocking_req_ready); */
+		/* ResetEvent(c->blocking_response_ready); */
+		/* ResetEvent(c->wake_scheduled_sleep); */
+	}
+}
+#else	/* pthreads prepare_child_sems() follows */
+{
+	size_t	octets;
+
+	if (NULL == c->blocking_req_ready) {
+		octets = sizeof(*c->blocking_req_ready);
+		octets += sizeof(*c->wake_scheduled_sleep);
+		/* !!!! octets += sizeof(*c->child_is_blocking); */
+		c->blocking_req_ready = emalloc_zero(octets);;
+		c->wake_scheduled_sleep = 1 + c->blocking_req_ready;
+		/* !!!! c->child_is_blocking = 1 + c->wake_scheduled_sleep; */
+	} else {
+		sem_destroy(c->blocking_req_ready);
+		sem_destroy(c->wake_scheduled_sleep);
+		/* !!!! sem_destroy(c->child_is_blocking); */
+	}
+	sem_init(c->blocking_req_ready, FALSE, 0);
+	sem_init(c->wake_scheduled_sleep, FALSE, 0);
+	/* !!!! sem_init(c->child_is_blocking, FALSE, 0); */
+}
+#endif
+
+
+static int
+wait_for_sem(
+	sem_ref			sem,
+	struct timespec *	timeout		/* wall-clock */
+	)
+#ifdef SYS_WINNT
+{
+	struct timespec now;
+	struct timespec delta;
+	DWORD		msec;
+	DWORD		rc;
+
+	if (NULL == timeout) {
+		msec = INFINITE;
+	} else {
+		getclock(TIMEOFDAY, &now);
+		delta = sub_tspec(*timeout, now);
+		if (delta.tv_sec < 0) {
+			msec = 0;
+		} else if ((delta.tv_sec + 1) >= (MAXDWORD / 1000)) {
+			msec = INFINITE;
+		} else {
+			msec = 1000 * (DWORD)delta.tv_sec;
+			msec += delta.tv_nsec / (1000 * 1000);
+		}
+	}
+	rc = WaitForSingleObject(sem, msec);
+	if (WAIT_OBJECT_0 == rc)
+		return 0;
+	if (WAIT_TIMEOUT == rc) {
+		errno = ETIMEDOUT;
+		return -1;
+	}
+	msyslog(LOG_ERR, "WaitForSingleObject unexpected 0x%x", rc);
+	errno = EFAULT;
+	return -1;
+}
+#else	/* pthreads wait_for_sem() follows */
+{
+	int rc;
+
+	if (NULL == timeout)
+		rc = sem_wait(sem);
+	else
+		rc = sem_timedwait(sem, timeout);
+
+	return rc;
+}
+#endif
+
+
+/*
+ * blocking_thread - thread functions have WINAPI calling convention
+ */
+#ifdef SYS_WINNT
+u_int
+WINAPI
+#else
+void *
+#endif
+blocking_thread(
+	void *	ThreadArg
+	)
+{
+	blocking_child *c;
+
+	c = ThreadArg;
+	exit_worker(blocking_child_common(c));
+
+	/* NOTREACHED */
+	return 0;
+}
+
+
+/*
+ * req_child_exit() runs in the parent.
+ */
+int
+req_child_exit(
+	blocking_child *c
+	)
+{
+	return queue_req_pointer(c, CHILD_EXIT_REQ);
+}
+
+
+/*
+ * cleanup_after_child() runs in parent.
+ */
+static void
+cleanup_after_child(
+	blocking_child *	c
+	)
+{
+	u_int	idx;
+
+	DEBUG_INSIST(!c->reusable);
+#ifdef SYS_WINNT
+	INSIST(CloseHandle(c->thread_ref));
+#else
+	free(c->thread_ref);
+#endif
+	c->thread_ref = NULL;
+	c->thread_id = 0;
+#ifdef WORK_PIPE
+	DEBUG_INSIST(-1 != c->resp_read_pipe);
+	DEBUG_INSIST(-1 != c->resp_write_pipe);
+	(*addremove_io_fd)(c->resp_read_pipe, c->ispipe, TRUE);
+	close(c->resp_write_pipe);
+	close(c->resp_read_pipe);
+	c->resp_write_pipe = -1;
+	c->resp_read_pipe = -1;
+#else
+	DEBUG_INSIST(NULL != c->blocking_response_ready);
+	(*addremove_io_semaphore)(c->blocking_response_ready, TRUE);
+#endif
+	for (idx = 0; idx < c->workitems_alloc; idx++)
+		c->workitems[idx] = NULL;
+	c->next_workitem = 0;
+	c->next_workeritem = 0;
+	for (idx = 0; idx < c->responses_alloc; idx++)
+		c->responses[idx] = NULL;
+	c->next_response = 0;
+	c->next_workresp = 0;
+	c->reusable = TRUE;
+}
+
+
+#else	/* !WORK_THREAD follows */
+char work_thread_nonempty_compilation_unit;
+#endif
diff --git a/libntp/ymd2yd.c b/libntp/ymd2yd.c
new file mode 100644
index 0000000..c6b3a0c
--- /dev/null
+++ b/libntp/ymd2yd.c
@@ -0,0 +1,26 @@
+/*
+ * ymd2yd - compute the date in the year from y/m/d
+ *
+ * A thin wrapper around a more general calendar function.
+ */
+
+#include <config.h>
+#include "ntp_stdlib.h"
+#include "ntp_calendar.h"
+
+int
+ymd2yd(
+	int y,
+	int m,
+	int d)
+{
+	/*
+	 * convert y/m/d to elapsed calendar units, convert that to
+	 * elapsed days since the start of the given year and convert
+	 * back to unity-based day in year.
+	 *
+	 * This does no further error checking, since the underlying
+	 * function is assumed to work out how to handle the data.
+	 */
+	return ntpcal_edate_to_yeardays(y-1, m-1, d-1) + 1;
+}