[asterisk-commits] file: trunk r104085 - in /trunk: ./ channels/chan_sip.c

[SVN commits to the Asterisk project]

Author: file
Date: Mon Feb 25 10:18:46 2008
New Revision: 104085

URL: http://svn.digium.com/view/asterisk?view=rev&rev=104085
Log:
Merged revisions 104084 via svnmerge from 
https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r104084 | file | 2008-02-25 12:16:13 -0400 (Mon, 25 Feb 2008) | 6 lines

If a resubscription comes in for a dialog we no longer know about tell the remote side that the dialog does not exist so they subscribe again using a new dialog.
(closes issue #10727)
Reported by: s0l4rb03
Patches:
      10727-2.diff uploaded by file (license 11)

........

Modified:
    trunk/   (props changed)
    trunk/channels/chan_sip.c

Propchange: trunk/
------------------------------------------------------------------------------
Binary property 'branch-1.4-merged' - no diff available.

Modified: trunk/channels/chan_sip.c
URL: http://svn.digium.com/view/asterisk/trunk/channels/chan_sip.c?view=diff&rev=104085&r1=104084&r2=104085
==============================================================================
--- trunk/channels/chan_sip.c (original)
+++ trunk/channels/chan_sip.c Mon Feb 25 10:18:46 2008
@@ -17392,6 +17392,18 @@
 	}
 
 	if (!req->ignore && !resubscribe) {	/* Set up dialog, new subscription */
+		const char *to = get_header(req, "To");
+		char totag[128];
+
+		/* Check to see if a tag was provided, if so this is actually a resubscription of a dialog we no longer know about */
+		if (!ast_strlen_zero(to) && gettag(req, "To", totag, sizeof(totag))) {
+			if (req->debug)
+				ast_verbose("Received resubscription for a dialog we no longer know about. Telling remote side to subscribe again.\n");
+			transmit_response(p, "481 Subscription does not exist", req);
+			p->needdestroy = 1;
+			return 0;
+		}
+
 		/* Use this as the basis */
 		if (req->debug)
 			ast_verbose("Creating new subscription\n");