[master] Add -df option to client code to help share DUIDs

Add the "-df <duid file>" option to the client code in order
to make it easier to share DUIDs between a v4 instance and
a v6 instance.  This option instructs the client to search
the duid file for a DUID if it didn't find one in the main
lease file.

In addition add the infrastructure for running ATF tests
for the client and write some ATF tests for this patch.

8 files changed, 1427 insertions, 0 deletions

diff --git a/client/tests/Atffile b/client/tests/Atffile
new file mode 100644
index 00000000..b2fdc0f1
--- /dev/null
+++ b/client/tests/Atffile
@@ -0,0 +1,5 @@
+Content-Type: application/X-atf-atffile; version="1"
+
+prop: test-suite = dhcp4
+
+tp-glob: *_unittests
diff --git a/client/tests/Makefile.am b/client/tests/Makefile.am
new file mode 100644
index 00000000..484318b0
--- /dev/null
+++ b/client/tests/Makefile.am
@@ -0,0 +1,40 @@
+SUBDIRS = .
+
+AM_CPPFLAGS = $(ATF_CFLAGS) -DUNIT_TEST -I$(top_srcdir)/includes
+AM_CPPFLAGS += -I$(top_srcdir)/bind/include -I$(top_srcdir)
+AM_CPPFLAGS += -DLOCALSTATEDIR='"."'
+AM_CPPFLAGS += -DCLIENT_PATH='"."'
+
+EXTRA_DIST = Atffile duid0_test.txt duid1_test.txt duid2_test.txt duid3_test.txt
+
+# for autotools debugging only
+info:
+	@echo "ATF_CFLAGS=$(ATF_CFLAGS)"
+	@echo "ATF_LDFLAGS=$(ATF_LDFLAGS)"
+	@echo "ATF_LIBS=$(ATF_LIBS)"
+
+DHCPSRC = ../clparse.c ../dhc6.c ../dhclient.c
+
+DHCPLIBS = $(top_builddir)/common/libdhcp.a $(top_builddir)/omapip/libomapi.a    \
+          $(top_builddir)/dhcpctl/libdhcpctl.a $(top_builddir)/bind/lib/libirs.a \
+	  $(top_builddir)/bind/lib/libdns.a $(top_builddir)/bind/lib/libisccfg.a \
+	  $(top_builddir)/bind/lib/libisc.a
+
+ATF_TESTS =
+TESTS = 
+if HAVE_ATF
+
+check: $(ATF_TESTS)
+	atf-run | atf-report
+
+ATF_TESTS += duid_unittests 
+
+duid_unittests_SOURCES = $(DHCPSRC) 
+duid_unittests_SOURCES += duid_unittest.c
+
+duid_unittests_LDADD = $(ATF_LDFLAGS)
+duid_unittests_LDADD += $(DHCPLIBS)
+
+endif
+
+check_PROGRAMS = $(ATF_TESTS) $(TESTS)
diff --git a/client/tests/Makefile.in b/client/tests/Makefile.in
new file mode 100644
index 00000000..e7b8f5ca
--- /dev/null
+++ b/client/tests/Makefile.in
@@ -0,0 +1,1078 @@
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+	 else								\
+	  col="$$red";							\
+	  test x"$$VERBOSE" = x || cat $(TEST_SUITE_LOG);		\
+	fi;								\
+	echo "$${col}$$br$${std}"; 					\
+	echo "$${col}Testsuite summary for $(PACKAGE_STRING)$${std}";	\
+	echo "$${col}$$br$${std}"; 					\
+	create_testsuite_report --maybe-color;				\
+	echo "$$col$$br$$std";						\
+	if $$success; then :; else					\
+	  echo "$${col}See $(subdir)/$(TEST_SUITE_LOG)$${std}";		\
+	  if test -n "$(PACKAGE_BUGREPORT)"; then			\
+	    echo "$${col}Please report to $(PACKAGE_BUGREPORT)$${std}";	\
+	  fi;								\
+	  echo "$$col$$br$$std";					\
+	fi;								\
+	$$success || exit 1
+
+check-TESTS:
+	@list='$(RECHECK_LOGS)';           test -z "$$list" || rm -f $$list
+	@list='$(RECHECK_LOGS:.log=.trs)'; test -z "$$list" || rm -f $$list
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	trs_list=`for i in $$bases; do echo $$i.trs; done`; \
+	log_list=`echo $$log_list`; trs_list=`echo $$trs_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) TEST_LOGS="$$log_list"; \
+	exit $$?;
+recheck: all $(check_PROGRAMS)
+	@test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+	@set +e; $(am__set_TESTS_bases); \
+	bases=`for i in $$bases; do echo $$i; done \
+	         | $(am__list_recheck_tests)` || exit 1; \
+	log_list=`for i in $$bases; do echo $$i.log; done`; \
+	log_list=`echo $$log_list`; \
+	$(MAKE) $(AM_MAKEFLAGS) $(TEST_SUITE_LOG) \
+	        am__force_recheck=am--force-recheck \
+	        TEST_LOGS="$$log_list"; \
+	exit $$?
+.test.log:
+	@p='$<'; \
+	$(am__set_b); \
+	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+	--log-file $$b.log --trs-file $$b.trs \
+	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+	"$$tst" $(AM_TESTS_FD_REDIRECT)
+@am__EXEEXT_TRUE@.test$(EXEEXT).log:
+@am__EXEEXT_TRUE@	@p='$<'; \
+@am__EXEEXT_TRUE@	$(am__set_b); \
+@am__EXEEXT_TRUE@	$(am__check_pre) $(TEST_LOG_DRIVER) --test-name "$$f" \
+@am__EXEEXT_TRUE@	--log-file $$b.log --trs-file $$b.trs \
+@am__EXEEXT_TRUE@	$(am__common_driver_flags) $(AM_TEST_LOG_DRIVER_FLAGS) $(TEST_LOG_DRIVER_FLAGS) -- $(TEST_LOG_COMPILE) \
+@am__EXEEXT_TRUE@	"$$tst" $(AM_TESTS_FD_REDIRECT)
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/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)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+	@list='$(DIST_SUBDIRS)'; for subdir in $$list; do \
+	  if test "$$subdir" = .; then :; else \
+	    $(am__make_dryrun) \
+	      || test -d "$(distdir)/$$subdir" \
+	      || $(MKDIR_P) "$(distdir)/$$subdir" \
+	      || exit 1; \
+	    dir1=$$subdir; dir2="$(distdir)/$$subdir"; \
+	    $(am__relativize); \
+	    new_distdir=$$reldir; \
+	    dir1=$$subdir; dir2="$(top_distdir)"; \
+	    $(am__relativize); \
+	    new_top_distdir=$$reldir; \
+	    echo " (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) top_distdir="$$new_top_distdir" distdir="$$new_distdir" \\"; \
+	    echo "     am__remove_distdir=: am__skip_length_check=: am__skip_mode_fix=: distdir)"; \
+	    ($(am__cd) $$subdir && \
+	      $(MAKE) $(AM_MAKEFLAGS) \
+	        top_distdir="$$new_top_distdir" \
+	        distdir="$$new_distdir" \
+		am__remove_distdir=: \
+		am__skip_length_check=: \
+		am__skip_mode_fix=: \
+	        distdir) \
+	      || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+	$(MAKE) $(AM_MAKEFLAGS) $(check_PROGRAMS)
+	$(MAKE) $(AM_MAKEFLAGS) check-TESTS
+check: check-recursive
+all-am: Makefile
+installdirs: installdirs-recursive
+installdirs-am:
+install: install-recursive
+install-exec: install-exec-recursive
+install-data: install-data-recursive
+uninstall: uninstall-recursive
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-recursive
+install-strip:
+	if test -z '$(STRIP)'; then \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	      install; \
+	else \
+	  $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	    install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	    "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
+	fi
+mostlyclean-generic:
+	-test -z "$(TEST_LOGS)" || rm -f $(TEST_LOGS)
+	-test -z "$(TEST_LOGS:.log=.trs)" || rm -f $(TEST_LOGS:.log=.trs)
+	-test -z "$(TEST_SUITE_LOG)" || rm -f $(TEST_SUITE_LOG)
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-recursive
+
+clean-am: clean-checkPROGRAMS clean-generic mostlyclean-am
+
+distclean: distclean-recursive
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-recursive
+
+dvi-am:
+
+html: html-recursive
+
+html-am:
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-recursive
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-recursive
+
+install-html-am:
+
+install-info: install-info-recursive
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-recursive
+
+install-pdf-am:
+
+install-ps: install-ps-recursive
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-recursive
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-recursive
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic
+
+pdf: pdf-recursive
+
+pdf-am:
+
+ps: ps-recursive
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: $(am__recursive_targets) check-am install-am install-strip
+
+.PHONY: $(am__recursive_targets) CTAGS GTAGS TAGS all all-am check \
+	check-TESTS check-am clean clean-checkPROGRAMS clean-generic \
+	cscopelist-am ctags ctags-am distclean distclean-compile \
+	distclean-generic distclean-tags distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dvi install-dvi-am install-exec \
+	install-exec-am install-html install-html-am install-info \
+	install-info-am install-man install-pdf install-pdf-am \
+	install-ps install-ps-am install-strip installcheck \
+	installcheck-am installdirs installdirs-am maintainer-clean \
+	maintainer-clean-generic mostlyclean mostlyclean-compile \
+	mostlyclean-generic pdf pdf-am ps ps-am recheck tags tags-am \
+	uninstall uninstall-am
+
+
+# for autotools debugging only
+info:
+	@echo "ATF_CFLAGS=$(ATF_CFLAGS)"
+	@echo "ATF_LDFLAGS=$(ATF_LDFLAGS)"
+	@echo "ATF_LIBS=$(ATF_LIBS)"
+
+@HAVE_ATF_TRUE@check: $(ATF_TESTS)
+@HAVE_ATF_TRUE@	atf-run | atf-report
+
+# 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/client/tests/duid0_test.txt b/client/tests/duid0_test.txt
new file mode 100644
index 00000000..75e8d452
--- /dev/null
+++ b/client/tests/duid0_test.txt
@@ -0,0 +1,33 @@
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+default-duid "\000\001";
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
diff --git a/client/tests/duid1_test.txt b/client/tests/duid1_test.txt
new file mode 100644
index 00000000..38761858
--- /dev/null
+++ b/client/tests/duid1_test.txt
@@ -0,0 +1,3 @@
+default-duid "\000\001\000\001\001\002\003\004\005\006\007\010\011\012";
+
+
diff --git a/client/tests/duid2_test.txt b/client/tests/duid2_test.txt
new file mode 100644
index 00000000..6837e9ab
--- /dev/null
+++ b/client/tests/duid2_test.txt
@@ -0,0 +1,66 @@
+default-duid "\000\003\000\001\005\006\007\010\011\012";
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 22:11:53;
+  rebind 2 2014/05/13 22:11:53;
+  expire 2 2014/05/13 22:11:53;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  foooo;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
+
+default-duid "\000\003\000\001\017\020\021\022\023\024";
diff --git a/client/tests/duid3_test.txt b/client/tests/duid3_test.txt
new file mode 100644
index 00000000..87c9f4d9
--- /dev/null
+++ b/client/tests/duid3_test.txt
@@ -0,0 +1,66 @@
+default-duid "\000\003\000\001\005\006\007\010\011\012";
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 22:11:53;
+  rebind 2 2014/05/13 22:11:53;
+  expire 2 2014/05/13 22:11:53;
+}
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+
+
+lease {
+  interface "em1";
+  fixed-address 172.16.132.152;
+  option subnet-mask 255.255.255.0;
+  option dhcp-lease-time 60;
+  option routers 17.132.16.200;
+  option dhcp-message-type 5;
+  option dhcp-server-identifier 172.16.132.200;
+  option dhcp-renewal-time 30;
+  option dhcp-rebinding-time 45;
+  option domain-name "example.org";
+  renew 2 2014/05/13 23:11:53;
+  rebind 2 2014/05/13 23:11:53;
+  expire 2 2014/05/13 23:11:53;
+}
+default-duid "\000\001";
+
+lease6 {
+  interface "em1";
+  ia-na 56:32:02:02 {
+    starts 1399436400;
+    renew 3;
+    rebind 15;
+    iaaddr 2000::37a {
+      starts 1399436400;
+      preferred-life 18;
+      max-life 30;
+    }
+  }
+  option dhcp6.client-id 0:1:0:1:1a:1:2d:7c:0:50:56:32:2:2;
+  option dhcp6.server-id 0:1:0:1:19:fd:aa:20:0:50:56:2f:de:8a;
+  option dhcp6.name-servers 2000::2;
+}
+
+default-duid "\000\001\000\001\025\026\027\030\031\032\033\034\035\036";
diff --git a/client/tests/duid_unittest.c b/client/tests/duid_unittest.c
new file mode 100644
index 00000000..c2c89cd8
--- /dev/null
+++ b/client/tests/duid_unittest.c
@@ -0,0 +1,136 @@
+/*
+ * Copyright (c) 2014 by Internet Systems Consortium, Inc. ("ISC")
+ *
+ * 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 ISC DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL ISC 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.
+ *
+ *   Internet Systems Consortium, Inc.
+ *   950 Charter Street
+ *   Redwood City, CA 94063
+ *   <info@isc.org>
+ *   https://www.isc.org/
+ *
+ */
+
+#include "config.h"
+#include <atf-c.h>
+#include <omapip/omapip_p.h>
+#include "dhcpd.h"
+
+
+/* Tests to see if the routine to read a secondary lease file
+ * for the DUID works properly.  The tests:
+ * Test file x:
+ * no test file - should result in no duid
+ * Test filx 0:
+ * A test file but no DUID def, no duid
+ * Test file 1:
+ * Can it read a single DUID in the file?
+ * Test file 2:
+ * Can it find a second DUID in the file after a good lease and
+ * a badly formatted lease?
+ * Test file 3:
+ * Can it find a later DUID after a good one and a bad one?
+ * and to give a bit more coverage test file 1 should use LLT
+ * test file 2 should use LL and test file 3 should use LL for
+ * the first one and LLT for the third one.
+ */
+
+int duidx_len = 0;
+
+int duid0_len = 0;
+
+int duid1_len = 14;
+char duid1_data[] = {0, 1, 0, 1, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+
+int duid2_len = 10;
+char duid2_data[] = {0, 3, 0, 1, 15, 16, 17, 18, 19, 20};
+
+int duid3_len = 14;
+char duid3_data[] = {0, 1, 0, 1, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30};
+
+ATF_TC(read_duid_test);
+
+ATF_TC_HEAD(read_duid_test, tc) {
+    atf_tc_set_md_var(tc, "descr", "read secondary file looking for duid");
+}
+
+ATF_TC_BODY(read_duid_test, tc) {
+
+    static const char *srcdir;
+    char duid_fname[1024];
+
+    /* Get the srcidr so we can find our test files */
+    if (atf_tc_has_config_var(tc, "srcdir"))
+	srcdir = atf_tc_get_config_var(tc, "srcdir");
+    /* point the duid file at our filename space
+       We will update it per test below */
+    path_dhclient_duid = duid_fname;
+
+    /* Initialize client globals. */
+    memset(&default_duid, 0, sizeof(default_duid));
+
+    /* Try to read a nonexistent test file
+     */
+    sprintf(duid_fname, "%s/duidx_test.txt", srcdir);
+    read_client_duid();
+    if (default_duid.len != duidx_len) {
+	atf_tc_fail("failed to properly read duid1");
+    }
+
+    /* Try to read test file 0
+     * This doesn't have a DUID.
+     */
+    sprintf(duid_fname, "%s/duid0_test.txt", srcdir);
+    read_client_duid();
+    if (default_duid.len != duid0_len) {
+	atf_tc_fail("failed to properly read duid0");
+    }
+
+    /* Try to read test file 1
+     * This has a single good LLT DUID in it
+     */
+    sprintf(duid_fname, "%s/duid1_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid1_len) ||
+	(memcmp(default_duid.data, duid1_data, duid1_len) != 0)) {
+	atf_tc_fail("failed to properly read duid1");
+    }
+
+    /* Try to read test file 2
+     * This has two good LL DUIDs in it with several good and bad leases between them.
+     */
+    sprintf(duid_fname, "%s/duid2_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid2_len) ||
+	(memcmp(default_duid.data, duid2_data, duid2_len) != 0)) {
+	atf_tc_fail("failed to properly read duid2");
+    }
+
+    /* Try to read test file 3
+     * This has a good LL DUID, a bad LLT DUID and a good LLT DUID
+     */
+    sprintf(duid_fname, "%s/duid3_test.txt", srcdir);
+    read_client_duid();
+    if ((default_duid.len != duid3_len) ||
+	(memcmp(default_duid.data, duid3_data, duid3_len) != 0)) {
+	atf_tc_fail("failed to properly read duid3");
+    }
+
+}
+
+
+ATF_TP_ADD_TCS(tp) {
+    ATF_TP_ADD_TC(tp, read_duid_test);
+
+    return (atf_no_error());
+}