Make sure that the base64 decoder returns a terminated string.

(closes issue #10979)
Reported by: ys
Patches:
      util.c.diff uploaded by ys (license 281)
	    - small mods by me

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@85543 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/utils.c b/main/utils.c
index 61fb8a194cae52f5b5ef8dd589ee4086cff426a0..5d4bd1cdcce7fca1eff38863e43d2922a54919e4 100644 (file)
--- a/main/utils.c
+++ b/main/utils.c
@@ -347,6 +347,9 @@ int ast_base64decode(unsigned char *dst, const char *src, int max)
                        cnt++;
                }
        }
+       if (cnt == max)
+               dst--;
+       *dst = '\0';
        /* Dont worry about left over bits, they're extra anyway */
        return cnt;
 }