Ensure the buffer passed to ast_canmatch_extension() is properly initialized so

that it is null terminated.

(issue #10977)
Reported by: dimas
Patches:
      pbxdundi.patch uploaded by dimas (license 88)
	    - small mods by me

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@85556 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/pbx/pbx_dundi.c b/pbx/pbx_dundi.c
index 21bb4e0fdb9facbcaa235ca5b0b4209d35da63b2..0b8a68175438c06020e8b4ce5e677ab67ae70776 100644 (file)
--- a/pbx/pbx_dundi.c
+++ b/pbx/pbx_dundi.c
@@ -578,8 +578,8 @@ static int dundi_lookup_local(struct dundi_result *dr, struct dundi_mapping *map
                } else {
                        /* No answers...  Find the fewest number of digits from the
                           number for which we have no answer. */
-                       char tmp[AST_MAX_EXTENSION];
-                       for (x=0;x<AST_MAX_EXTENSION;x++) {
+                       char tmp[AST_MAX_EXTENSION + 1] = "";
+                       for (x = 0; x < (sizeof(tmp) - 1); x++) {
                                tmp[x] = called_number[x];
                                if (!tmp[x])
                                        break;