-const char miscutil_rcs[] = "$Id: miscutil.c,v 1.41 2006/08/18 16:03:17 david__schmidt Exp $";
+const char miscutil_rcs[] = "$Id: miscutil.c,v 1.44 2006/11/07 12:46:43 fabiankeil Exp $";
/*********************************************************************
*
* File : $Source: /cvsroot/ijbswa/current/miscutil.c,v $
*
* Revisions :
* $Log: miscutil.c,v $
+ * Revision 1.44 2006/11/07 12:46:43 fabiankeil
+ * Silence compiler warning on NetBSD 3.1.
+ *
+ * Revision 1.43 2006/09/23 13:26:38 roro
+ * Replace TABs by spaces in source code.
+ *
+ * Revision 1.42 2006/09/09 14:01:45 fabiankeil
+ * Integrated Oliver Yeoh's domain pattern fix
+ * to make sure *x matches xx. Closes Patch 1217393
+ * and Bug 1170767.
+ *
* Revision 1.41 2006/08/18 16:03:17 david__schmidt
* Tweak for OS/2 build happiness.
*
while (*q != '\0')
{
- *p++ = toupper(*q++);
+ *p++ = toupper((int) *q++);
}
return result;
long int pick_from_range(long int range)
{
long int number;
-#ifndef HAVE_RANDOM
- unsigned int weak_seed;
-
- weak_seed = (unsigned int)((unsigned int)time(NULL) | (unsigned int)range);
- srand(weak_seed);
+#ifdef HAVE_RANDOM
+ number = random() % range + 1;
+#elif defined(FEATURE_PTHREAD)
+ pthread_mutex_lock(&rand_mutex);
+ number = rand() % (long int)(range + 1);
+ pthread_mutex_unlock(&rand_mutex);
+#else
+#ifdef _WIN32
/*
- * Some rand implementations aren't that random and return mostly
- * lower numbers. Low entropy doesn't matter for the header times,
- * but higher "random" factors are prefered.
+ * On Windows and mingw32 srand() has to be called in every
+ * rand()-using thread, but can cause crashes if it's not
+ * mutex protected.
+ *
+ * Currently we don't have mutexes for mingw32, and for
+ * our purpose this cludge is probably preferable to crashes.
*/
- number = (rand() * 12345) % (long int)(range + 1);
- /* Overflows don't matter either, positive numbers do. */
- if(number<0)
- {
- number*= -1;
- }
+ log_error(LOG_LEVEL_INFO, "No thread-safe PRNG available? Using weak \'randomization\' factor.");
+ number = (range + GetCurrentThreadId() % range) / 2;
#else
- number = random() % range + 1;
-#endif /* (ifndef HAVE_RANDOM) */
+ /*
+ * XXX: Which platforms reach this and are there
+ * better options than just using rand() and hoping
+ * that it's safe?
+ */
+ log_error(LOG_LEVEL_INFO, "No thread-safe PRNG available? Header time randomization might cause "
+ "crashes, predictable results or even combine these fine options.");
+ number = rand() % (long int)(range + 1);
+#endif /* def _WIN32 */
+
+#endif /* (def HAVE_RANDOM) */
+
return (number);
}
{
strcpy(old_zone,"TZ=");
strcat(old_zone,zone);
- putenv(old_zone);
+ putenv(old_zone);
}
}
else