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authorSimon Josefsson <simon@josefsson.org>2004-08-23 08:35:52 +0000
committerSimon Josefsson <simon@josefsson.org>2004-08-23 08:35:52 +0000
commit42e1b4036ffcf938b1ab43860db564e913e0fbd5 (patch)
treeb8d72c6b93cf76fbdc95528fb8e83c21e7d6e8d2 /m4
parente8635cc525aa563e50881ee31a5b3d9ba20950f9 (diff)
downloadgnutls-42e1b4036ffcf938b1ab43860db564e913e0fbd5.tar.gz
Move /dev/*random stuff to separate m4 file.
Diffstat (limited to 'm4')
-rw-r--r--m4/gc_random.m487
1 files changed, 87 insertions, 0 deletions
diff --git a/m4/gc_random.m4 b/m4/gc_random.m4
new file mode 100644
index 0000000000..3f90740c8a
--- /dev/null
+++ b/m4/gc_random.m4
@@ -0,0 +1,87 @@
+# gc_random.m4 serial 1
+# Copyright (C) 2004 Simon Josefsson
+#
+# This file is free software, distributed under the terms of the GNU
+# General Public License. As a special exception to the GNU General
+# Public License, this file may be distributed as part of a program
+# that contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# This file can can be used in projects which are not available under
+# the GNU General Public License or the GNU Library General Public
+# License but which still want to provide support for Autobuild.
+
+# Usage: GC_RANDOM
+AC_DEFUN([GC_RANDOM],
+[
+ AC_REQUIRE([AC_CANONICAL_TARGET])
+
+ # Devices with randomness.
+ # FIXME: Are these the best defaults?
+ case "${target}" in
+ *-openbsd*)
+ NAME_OF_RANDOM_DEVICE="/dev/srandom"
+ NAME_OF_PSEUDO_RANDOM_DEVICE="/dev/prandom"
+ NAME_OF_NONCE_DEVICE="/dev/urandom"
+ ;;
+
+ *-netbsd*)
+ NAME_OF_RANDOM_DEVICE="/dev/srandom"
+ NAME_OF_PSEUDO_RANDOM_DEVICE="/dev/urandom"
+ NAME_OF_NONCE_DEVICE="/dev/urandom"
+ ;;
+
+ *-solaris* | *-irix* | *-dec-osf* )
+ NAME_OF_RANDOM_DEVICE="/dev/random"
+ NAME_OF_PSEUDO_RANDOM_DEVICE="/dev/random"
+ NAME_OF_NONCE_DEVICE="/dev/random"
+ ;;
+
+ *)
+ NAME_OF_RANDOM_DEVICE="/dev/random"
+ NAME_OF_PSEUDO_RANDOM_DEVICE="/dev/urandom"
+ NAME_OF_NONCE_DEVICE="/dev/urandom"
+ ;;
+ esac
+
+ AC_MSG_CHECKING([device with (strong) random data...])
+ AC_ARG_ENABLE(random-device,
+ AC_HELP_STRING([--enable-random-device],
+ [device with (strong) randomness (for Nettle)]),
+ NAME_OF_RANDOM_DEVICE=$enableval)
+ AC_MSG_RESULT($NAME_OF_RANDOM_DEVICE)
+
+ AC_MSG_CHECKING([device with pseudo random data...])
+ AC_ARG_ENABLE(pseudo-random-device,
+ AC_HELP_STRING([--enable-pseudo-random-device],
+ [device with pseudo randomness (for Nettle)]),
+ NAME_OF_PSEUDO_RANDOM_DEVICE=$enableval)
+ AC_MSG_RESULT($NAME_OF_PSEUDO_RANDOM_DEVICE)
+
+ AC_MSG_CHECKING([device with unpredictable data for nonces...])
+ AC_ARG_ENABLE(nonce-device,
+ AC_HELP_STRING([--enable-nonce-device],
+ [device with unpredictable nonces (for Nettle)]),
+ NAME_OF_NONCE_DEVICE=$enableval)
+ AC_MSG_RESULT($NAME_OF_NONCE_DEVICE)
+
+ AC_CHECK_FILE($NAME_OF_RANDOM_DEVICE,, AC_MSG_ERROR([[
+*** Device for (strong) random data $NAME_OF_RANDOM_DEVICE does not exist
+]]))
+ AC_CHECK_FILE($NAME_OF_PSEUDO_RANDOM_DEVICE,, AC_MSG_ERROR([[
+*** Device for pseudo-random data $NAME_OF_PSEUDO_RANDOM_DEVICE does not exist
+]]))
+ AC_CHECK_FILE($NAME_OF_NONCE_DEVICE,, AC_MSG_ERROR([[
+*** Device for unpredictable nonces $NAME_OF_NONCE_DEVICE does not exist
+]]))
+
+ # FIXME: Open+read 42 bytes+close twice and compare data. Should differ.
+
+ AC_DEFINE_UNQUOTED(NAME_OF_RANDOM_DEVICE, "$NAME_OF_RANDOM_DEVICE",
+ [defined to the name of the (strong) random device])
+ AC_DEFINE_UNQUOTED(NAME_OF_PSEUDO_RANDOM_DEVICE,
+ "$NAME_OF_PSEUDO_RANDOM_DEVICE",
+ [defined to the name of the pseudo random device])
+ AC_DEFINE_UNQUOTED(NAME_OF_NONCE_DEVICE, "$NAME_OF_NONCE_DEVICE",
+ [defined to the name of the unpredictable nonce device])
+])