From 1bd88c387e3e90f5a3231d136dda6dd019501a61 Mon Sep 17 00:00:00 2001
From: "Kevin P. Fleming" <kpfleming@digium.com>
Date: Wed, 6 Jul 2005 01:45:23 +0000
Subject: [PATCH] don't segfault when peer doesn't send Referred-By (bug #4588)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6038 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
channels/chan_sip.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 6b4e40d21c..a5091e73e1 100755
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -5909,9 +5909,11 @@ static int get_refer_info(struct sip_pvt *sip_pvt, struct sip_request *outgoing_
referred_by = NULL;
}
- refer_to += 4;
- referred_by += 4;
-
+ if (refer_to)
+ refer_to += 4;
+
+ if (referred_by)
+ referred_by += 4;
if ((ptr = strchr(refer_to, '?'))) {
/* Search for arguments */
@@ -5982,7 +5984,8 @@ static int get_refer_info(struct sip_pvt *sip_pvt, struct sip_request *outgoing_
ast_log(LOG_DEBUG,"Transferred by (Referred-by: ) %s \n", referred_by);
ast_log(LOG_DEBUG,"Transfer Contact Info %s (REFER_CONTACT)\n", h_contact);
ast_copy_string(sip_pvt->refer_to, refer_to, sizeof(sip_pvt->refer_to));
- ast_copy_string(sip_pvt->referred_by, referred_by, sizeof(sip_pvt->referred_by));
+ if (referred_by)
+ ast_copy_string(sip_pvt->referred_by, referred_by, sizeof(sip_pvt->referred_by));
if (h_contact) {
ast_copy_string(sip_pvt->refer_contact, h_contact, sizeof(sip_pvt->refer_contact));
}
--
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