Add SIPREFERRINGCONTEXT and SIPREFERREDBYHDR variables when a transfer takes place. (issue #8378 reported by jcovert)

git-svn-id: http://svn.digium.com/svn/asterisk/trunk@72354 f38db490-d61c-443f-a65b-d21fe96a405b

2 files changed, 11 insertions, 0 deletions

diff --git a/CHANGES b/CHANGES
index 41cc45c25..a518c842c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -60,6 +60,7 @@ SIP changes
      in this file of the "pollmailboxes" and "pollfreq" options to voicemail.conf 
      for more information.
   * Added rtpdest option to CHANNEL() dialplan function.
+  * Added SIPREFERRINGCONTEXT and SIPREFERREDBYHDR variables which are set when a transfer takes place.
 
 IAX2 changes
 ------------
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 37d7f3010..52368427a 100644
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -9340,6 +9340,16 @@ static int get_refer_info(struct sip_pvt *transferer, struct sip_request *outgoi
 
 	/* Get referred by header if it exists */
 	p_referred_by = get_header(req, "Referred-By");
+
+	/* Give useful transfer information to the dialplan */
+	if (transferer->owner) {
+		struct ast_channel *peer = ast_bridged_channel(transferer->owner);
+		if (peer) {
+			pbx_builtin_setvar_helper(peer, "SIPREFERRINGCONTEXT", transferer->context);
+			pbx_builtin_setvar_helper(peer, "SIPREFERREDBYHDR", p_referred_by);
+		}
+	}
+
 	if (!ast_strlen_zero(p_referred_by)) {
 		char *lessthan;
 		h_referred_by = ast_strdupa(p_referred_by);