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 */
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));
}