[Asterisk-code-review] res pjsip caller id: Fix crash on session timers UPDATE on i... (asterisk[13])

[Joshua Colp]

Joshua Colp has uploaded a new change for review. ( https://gerrit.asterisk.org/4202 )

Change subject: res_pjsip_caller_id: Fix crash on session timers UPDATE on inbound calls.
......................................................................

res_pjsip_caller_id: Fix crash on session timers UPDATE on inbound calls.

The res_pjsip_caller_id module wrongly assumed that a
saved From header would always exist on sessions. This
is true until an inbound call is received and a session
timer causes an UPDATE to be sent. In this case there will
be no saved From header and a crash will occur. This change
makes it fall back to the From header of the outgoing request
if no saved From header is present.

ASTERISK-26307 #close

Change-Id: Iccc3bc8d243b5ede9b81abf960292930c908d4fa
---
M res/res_pjsip_caller_id.c
1 file changed, 10 insertions(+), 4 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/02/4202/1

diff --git a/res/res_pjsip_caller_id.c b/res/res_pjsip_caller_id.c
index c3aa338..1b453cf 100644
--- a/res/res_pjsip_caller_id.c
+++ b/res/res_pjsip_caller_id.c
@@ -523,8 +523,11 @@
 		}
 	}
 
-	base = tdata->msg->type == PJSIP_REQUEST_MSG ? session->saved_from_hdr :
-		PJSIP_MSG_TO_HDR(tdata->msg);
+	if (tdata->msg->type == PJSIP_REQUEST_MSG) {
+		base = session->saved_from_hdr ? session->saved_from_hdr : PJSIP_MSG_FROM_HDR(tdata->msg);
+	} else {
+		base = PJSIP_MSG_TO_HDR(tdata->msg);
+	}
 
 	pai_hdr = create_new_id_hdr(&pj_pai_name, base, tdata, id);
 	if (!pai_hdr) {
@@ -629,8 +632,11 @@
 		}
 	}
 
-	base = tdata->msg->type == PJSIP_REQUEST_MSG ? session->saved_from_hdr :
-		PJSIP_MSG_TO_HDR(tdata->msg);
+	if (tdata->msg->type == PJSIP_REQUEST_MSG) {
+		base = session->saved_from_hdr ? session->saved_from_hdr : PJSIP_MSG_FROM_HDR(tdata->msg);
+	} else {
+		base = PJSIP_MSG_TO_HDR(tdata->msg);
+	}
 
 	rpid_hdr = create_new_id_hdr(&pj_rpid_name, base, tdata, id);
 	if (!rpid_hdr) {

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Iccc3bc8d243b5ede9b81abf960292930c908d4fa
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: 13
Gerrit-Owner: Joshua Colp <jcolp at digium.com>