Merged revisions 288507 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r288507 | twilson | 2010-09-22 16:18:27 -0700 (Wed, 22 Sep 2010) | 22 lines
  
  Merged revisions 288500 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.6.2
  
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    r288500 | twilson | 2010-09-22 16:10:09 -0700 (Wed, 22 Sep 2010) | 15 lines
    
    Merged revisions 288499 via svnmerge from 
    https://origsvn.digium.com/svn/asterisk/branches/1.4
    
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      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
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@288519 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -568,6 +568,15 @@ 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;
 }