rng: Use arc4random for pseudo random number generation

Default rng generates same random numbers within one second of unix time:

rbtz@host:~$ while :; do jot -r 1; sleep 0.1; done
81
81
81
21
21
21
21
21
21
21
21
21
21
26

This patch solves problem by using FreeBSD's arc4 rng


diff -Nur athena-jot-9.0.orig/configure.in athena-jot-9.0/configure.in
--- athena-jot-9.0.orig/configure.in	2001-05-16 09:19:50.000000000 +0400
+++ athena-jot-9.0/configure.in	2012-03-15 16:50:04.169791328 +0400
@@ -4,6 +4,10 @@
 AC_PROG_CC
 AC_PROG_INSTALL
 AC_CHECK_FUNCS(srandom random srand48 lrand48)
+AC_CHECK_HEADER([bsd/stdlib.h],
+                [AC_DEFINE([HAVE_BSD_STDLIB_H], [1],
+                   [Define to 1 if you have <bsd/stdlib.h>.])],
+                [AC_MSG_ERROR([sorry, can't do anything for you])])
 
 AC_CONFIG_HEADER(config.h)
 AC_OUTPUT(Makefile)
diff -Nur athena-jot-9.0.orig/debian/changelog athena-jot-9.0/debian/changelog
--- athena-jot-9.0.orig/debian/changelog	2012-03-15 19:11:26.000000000 +0400
+++ athena-jot-9.0/debian/changelog	2012-03-15 16:54:27.891099052 +0400
@@ -1,3 +1,9 @@
+athena-jot (9.0-5yandex0) oneiric; urgency=low
+
+  * Use arc4random number generation instead of time based
+
+ -- Alexey Ivanov <rbtz@yandex-team.ru>  Thu, 15 Mar 2012 16:53:49 +0400
+
 athena-jot (9.0-5) unstable; urgency=low
 
   * Reverted to compat=3 for etch inclusion.
diff -Nur athena-jot-9.0.orig/debian/control athena-jot-9.0/debian/control
--- athena-jot-9.0.orig/debian/control	2012-03-15 19:11:26.000000000 +0400
+++ athena-jot-9.0/debian/control	2012-03-15 16:57:30.492004515 +0400
@@ -2,12 +2,12 @@
 Section: utils
 Priority: optional
 Maintainer: Francesco Paolo Lovergine <frankie@debian.org>
-Build-Depends: debhelper (>> 4.0.0)
+Build-Depends: debhelper (>> 4.0.0), libbsd-dev
 Standards-Version: 3.7.2
 
 Package: athena-jot
 Architecture: any
-Depends: ${shlibs:Depends} 
+Depends: ${shlibs:Depends}
 Description: print out increasing, decreasing, random, or redundant data, one per line
  Athena jot - or simply jot - prints out increasing, decreasing, random, 
  or redundant data, usually numbers, one per line.
diff -Nur athena-jot-9.0.orig/jot.c athena-jot-9.0/jot.c
--- athena-jot-9.0.orig/jot.c	2012-03-15 19:11:26.000000000 +0400
+++ athena-jot-9.0/jot.c	2012-03-15 16:26:11.898689086 +0400
@@ -60,6 +60,11 @@
 #include <time.h>
 #include "config.h"
 
+#if defined(HAVE_BSD_STDLIB_H)
+#include <bsd/stdlib.h>
+#define srandom //
+#define random arc4random
+#else
 #if !defined(HAVE_SRANDOM) || !defined(HAVE_SRANDOM)
 #if defined(HAVE_SRAND48) && defined(HAVE_LRAND48)
 #define srandom srand48
@@ -69,6 +74,7 @@
 #define random rand
 #endif
 #endif
+#endif /* HAVE_ARC4RANDOM */
 
 #define	REPS_DEF	100
 #define	BEGIN_DEF	1
diff -Nur athena-jot-9.0.orig/Makefile.in athena-jot-9.0/Makefile.in
--- athena-jot-9.0.orig/Makefile.in	2001-05-16 09:19:50.000000000 +0400
+++ athena-jot-9.0/Makefile.in	2012-03-15 16:50:22.841883915 +0400
@@ -15,7 +15,7 @@
 CPPFLAGS=@CPPFLAGS@
 CFLAGS=@CFLAGS@
 LDFLAGS=@LDFLAGS@
-LIBS=@LIBS@
+LIBS=@LIBS@ -lbsd
 ALL_CFLAGS=-I. ${CPPFLAGS} ${CFLAGS}
 
 all: jot