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

diff --git a/main/utils.c b/main/utils.c
index 97abe80ae4bb3d3a03a80280a5c95a441509c88a..afddae6bf917c985321c1ba36f1db460aac03e9b 100644 (file)
--- a/main/utils.c
+++ b/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