Make the behavior of using /dev/urandom for random numbers the same as random().

(closes issue #11348)
Reported by: sperreault
Patches:
      ast_random2.diff uploaded by sperreault (license 252)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@89576 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/utils.c

@@ -1138,8 +1138,10 @@ long int ast_random(void)
 #ifdef HAVE_DEV_URANDOM
 	if (dev_urandom_fd >= 0) {
 		int read_res = read(dev_urandom_fd, &res, sizeof(res));
-		if (read_res > 0)
-			return res < 0 ? ~res : res;
+		if (read_res > 0) {
+			res = res < 0 ? ~res : res;
+			return res % ((long)RAND_MAX + 1);
+		}
 	}
 #endif
 #ifdef linux