Merged revisions 288499 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

........
  r288499 | twilson | 2010-09-22 16:00:30 -0700 (Wed, 22 Sep 2010) | 8 lines

  Don't let a Local channel get bridged to itself

  If a local channel gets bridged to itself, it becomes orphaned with no devices
  left to actually tell it to hang up. This patch modifies local_fixup() to detect
  this case and deny it.

  Review: https://reviewboard.asterisk.org/r/934
........

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.2@288500 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_local.c b/channels/chan_local.c
index 62568ca57d95e87ba90589210e2bc5ef91431e4b..835ae88def852dc055508b48b9b42e4063bda225 100644 (file)
--- a/channels/chan_local.c
+++ b/channels/chan_local.c
@@ -531,6 +531,15 @@ static int local_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
                p->owner = newchan;
        else
                p->chan = newchan;
+
+       /* Do not let a masquerade cause a Local channel to be bridged to itself! */
+       if (p->owner->_bridge == p->chan || p->chan->_bridge == p->owner) {
+               ast_log(LOG_WARNING, "You can not bridge a Local channel to itself!\n");
+               ast_mutex_unlock(&p->lock);
+               ast_queue_hangup(newchan);
+               return -1;
+       }
+
        ast_mutex_unlock(&p->lock);
        return 0;
 }