Create more accurate Contact headers for dialogs when we are the UAS.

(closes issue AST-1207)
reported by John Bigelow

Review: https://reviewboard.asterisk.org/r/2842
........

Merged revisions 399083 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@399084 65c4cc65-6c06-0410-ace0-fbb531ad65f3

include/asterisk/res_pjsip.h

@@ -1188,7 +1188,7 @@ struct ast_sip_body {
 };
 
 /*!
- * \brief General purpose method for creating a dialog with an endpoint
+ * \brief General purpose method for creating a UAC dialog with an endpoint
  *
  * \param endpoint A pointer to the endpoint
  * \param aor_name Optional name of the AOR to target, may even be an explicit SIP URI
@@ -1197,7 +1197,15 @@ struct ast_sip_body {
  * \retval non-NULL success
  * \retval NULL failure
  */
- pjsip_dialog *ast_sip_create_dialog(const struct ast_sip_endpoint *endpoint, const char *aor_name, const char *request_user);
+pjsip_dialog *ast_sip_create_dialog_uac(const struct ast_sip_endpoint *endpoint, const char *aor_name, const char *request_user);
+
+/*!
+ * \brief General purpose method for creating a UAS dialog with an endpoint
+ *
+ * \param endpoint A pointer to the endpoint
+ * \param rdata The request that is starting the dialog
+ */
+pjsip_dialog *ast_sip_create_dialog_uas(const struct ast_sip_endpoint *endpoint, pjsip_rx_data *rdata);
 
 /*!
  * \brief General purpose method for creating a SIP request

res/res_pjsip.c

@@ -1324,7 +1324,7 @@ static int sip_get_tpselector_from_uri(const char *uri, pjsip_tpselector *select
 	return 0;
 }
 
-pjsip_dialog *ast_sip_create_dialog(const struct ast_sip_endpoint *endpoint, const char *uri, const char *request_user)
+pjsip_dialog *ast_sip_create_dialog_uac(const struct ast_sip_endpoint *endpoint, const char *uri, const char *request_user)
 {
 	pj_str_t local_uri = { "sip:temp@temp", 13 }, remote_uri;
 	pjsip_dialog *dlg = NULL;
@@ -1386,6 +1386,38 @@ pjsip_dialog *ast_sip_create_dialog(const struct ast_sip_endpoint *endpoint, con
 	return dlg;
 }
 
+pjsip_dialog *ast_sip_create_dialog_uas(const struct ast_sip_endpoint *endpoint, pjsip_rx_data *rdata)
+{
+	pjsip_dialog *dlg;
+	pj_str_t contact;
+	pjsip_transport_type_e type = rdata->tp_info.transport->key.type;
+	pj_status_t status;
+
+	contact.ptr = pj_pool_alloc(rdata->tp_info.pool, PJSIP_MAX_URL_SIZE);
+	contact.slen = pj_ansi_snprintf(contact.ptr, PJSIP_MAX_URL_SIZE,
+			"<%s:%s%.*s%s:%d%s%s>",
+			(pjsip_transport_get_flag_from_type(type) & PJSIP_TRANSPORT_SECURE) ? "sips" : "sip",
+			(type & PJSIP_TRANSPORT_IPV6) ? "[" : "",
+			(int)rdata->tp_info.transport->local_name.host.slen,
+			rdata->tp_info.transport->local_name.host.ptr,
+			(type & PJSIP_TRANSPORT_IPV6) ? "]" : "",
+			rdata->tp_info.transport->local_name.port,
+			(type != PJSIP_TRANSPORT_UDP && type != PJSIP_TRANSPORT_UDP6) ? ";transport=" : "",
+			(type != PJSIP_TRANSPORT_UDP && type != PJSIP_TRANSPORT_UDP6) ? pjsip_transport_get_type_name(type) : "");
+
+	status = pjsip_dlg_create_uas(pjsip_ua_instance(), rdata, &contact, &dlg);
+	if (status != PJ_SUCCESS) {
+		char err[PJ_ERR_MSG_SIZE];
+
+		pjsip_strerror(status, err, sizeof(err));
+		ast_log(LOG_ERROR, "Could not create dialog with endpoint %s. %s\n",
+				ast_sorcery_object_get_id(endpoint), err);
+		return NULL;
+	}
+
+	return dlg;
+}
+
 /* PJSIP doesn't know about the INFO method, so we have to define it ourselves */
 static const pjsip_method info_method = {PJSIP_OTHER_METHOD, {"INFO", 4} };
 static const pjsip_method message_method = {PJSIP_OTHER_METHOD, {"MESSAGE", 7} };

res/res_pjsip.exports.in

@@ -32,7 +32,8 @@
 		LINKER_SYMBOL_PREFIXast_sip_get_endpoints;
 		LINKER_SYMBOL_PREFIXast_copy_pj_str;
 		LINKER_SYMBOL_PREFIXast_sip_get_sorcery;
-		LINKER_SYMBOL_PREFIXast_sip_create_dialog;
+		LINKER_SYMBOL_PREFIXast_sip_create_dialog_uac;
+		LINKER_SYMBOL_PREFIXast_sip_create_dialog_uas;
 		LINKER_SYMBOL_PREFIXast_sip_location_retrieve_aor;
 		LINKER_SYMBOL_PREFIXast_sip_location_retrieve_first_aor_contact;
 		LINKER_SYMBOL_PREFIXast_sip_location_retrieve_contact_from_aor_list;

res/res_pjsip_pubsub.c

@@ -282,7 +282,7 @@ struct ast_sip_subscription *ast_sip_create_subscription(const struct ast_sip_su
 	}
 	sub->role = role;
 	if (role == AST_SIP_NOTIFIER) {
-		pjsip_dlg_create_uas(pjsip_ua_instance(), rdata, NULL, &dlg);
+		dlg = ast_sip_create_dialog_uas(endpoint, rdata);
 	} else {
 		RAII_VAR(struct ast_sip_contact *, contact, NULL, ao2_cleanup);
 
@@ -293,7 +293,7 @@ struct ast_sip_subscription *ast_sip_create_subscription(const struct ast_sip_su
 			ao2_ref(sub, -1);
 			return NULL;
 		}
-		dlg = ast_sip_create_dialog(endpoint, contact->uri, NULL);
+		dlg = ast_sip_create_dialog_uac(endpoint, contact->uri, NULL);
 	}
 	if (!dlg) {
 		ast_log(LOG_WARNING, "Unable to create dialog for SIP subscription\n");

res/res_pjsip_session.c

@@ -1185,7 +1185,7 @@ struct ast_sip_session *ast_sip_session_create_outgoing(struct ast_sip_endpoint
 		return NULL;
 	}
 
-	if (!(dlg = ast_sip_create_dialog(endpoint, uri, request_user))) {
+	if (!(dlg = ast_sip_create_dialog_uac(endpoint, uri, request_user))) {
 		return NULL;
 	}
 
@@ -1337,7 +1337,8 @@ static pjsip_inv_session *pre_session_setup(pjsip_rx_data *rdata, const struct a
 		}
 		return NULL;
 	}
-	if (pjsip_dlg_create_uas(pjsip_ua_instance(), rdata, NULL, &dlg) != PJ_SUCCESS) {
+	dlg = ast_sip_create_dialog_uas(endpoint, rdata);
+	if (!dlg) {
 		pjsip_endpt_respond_stateless(ast_sip_get_pjsip_endpoint(), rdata, 500, NULL, NULL, NULL);
 		return NULL;
 	}