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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2014, Digium, Inc.
*
* Matt Jordan <mjordan@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief RTCP logging with Homer
*
* \author Matt Jordan <mjordan@digium.com>
*
*/
/*** MODULEINFO
<depend>res_hep</depend>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include "asterisk/res_hep.h"
#include "asterisk/module.h"
#include "asterisk/netsock2.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/stasis.h"
#include "asterisk/rtp_engine.h"
#include "asterisk/json.h"
#include "asterisk/config.h"
static struct stasis_subscription *stasis_rtp_subscription;
static char *assign_uuid(struct ast_json *json_channel)
{
const char *channel_name = ast_json_string_get(ast_json_object_get(json_channel, "name"));
enum hep_uuid_type uuid_type = hepv3_get_uuid_type();
char *uuid = NULL;
if (!channel_name) {
return NULL;
}
if (uuid_type == HEP_UUID_TYPE_CALL_ID) {
struct ast_channel *chan = NULL;
char buf[128];
if (ast_begins_with(channel_name, "PJSIP")) {
chan = ast_channel_get_by_name(channel_name);
if (chan && !ast_func_read(chan, "CHANNEL(pjsip,call-id)", buf, sizeof(buf))) {
uuid = ast_strdup(buf);
}
} else if (ast_begins_with(channel_name, "SIP")) {
chan = ast_channel_get_by_name(channel_name);
if (chan && !ast_func_read(chan, "SIP_HEADER(call-id)", buf, sizeof(buf))) {
uuid = ast_strdup(buf);
}
}
ast_channel_cleanup(chan);
}
/* If we couldn't get the call-id or didn't want it, just use the channel name */
if (!uuid) {
uuid = ast_strdup(channel_name);
}
return uuid;
}
static void rtcp_message_handler(struct stasis_message *message)
{
RAII_VAR(struct ast_json *, json_payload, NULL, ast_json_unref);
RAII_VAR(char *, payload, NULL, ast_json_free);
struct ast_json *json_blob;
struct ast_json *json_channel;
struct ast_json *json_rtcp;
struct hepv3_capture_info *capture_info;
struct ast_json *from;
struct ast_json *to;
struct timeval current_time = ast_tvnow();
json_payload = stasis_message_to_json(message, NULL);
if (!json_payload) {
return;
}
json_blob = ast_json_object_get(json_payload, "blob");
if (!json_blob) {
return;
}
json_channel = ast_json_object_get(json_payload, "channel");
if (!json_channel) {
return;
}
json_rtcp = ast_json_object_get(json_payload, "rtcp_report");
if (!json_rtcp) {
return;
}
from = ast_json_object_get(json_blob, "from");
to = ast_json_object_get(json_blob, "to");
if (!from || !to) {
return;
}
payload = ast_json_dump_string(json_rtcp);
if (ast_strlen_zero(payload)) {
return;
}
capture_info = hepv3_create_capture_info(payload, strlen(payload));
if (!capture_info) {
return;
}
ast_sockaddr_parse(&capture_info->src_addr, ast_json_string_get(from), PARSE_PORT_REQUIRE);
ast_sockaddr_parse(&capture_info->dst_addr, ast_json_string_get(to), PARSE_PORT_REQUIRE);
capture_info->uuid = assign_uuid(json_channel);
if (!capture_info->uuid) {
ao2_ref(capture_info, -1);
return;
}
capture_info->capture_time = current_time;
capture_info->capture_type = HEPV3_CAPTURE_TYPE_RTCP;
capture_info->zipped = 0;
hepv3_send_packet(capture_info);
}
static void rtp_topic_handler(void *data, struct stasis_subscription *sub, struct stasis_message *message)
{
struct stasis_message_type *message_type = stasis_message_type(message);
if ((message_type == ast_rtp_rtcp_sent_type()) ||
(message_type == ast_rtp_rtcp_received_type())) {
rtcp_message_handler(message);
}
}
static int load_module(void)
{
if (!hepv3_is_loaded()) {
ast_log(AST_LOG_WARNING, "res_hep is disabled; declining module load\n");
return AST_MODULE_LOAD_DECLINE;
}
stasis_rtp_subscription = stasis_subscribe(ast_rtp_topic(),
rtp_topic_handler, NULL);
if (!stasis_rtp_subscription) {
return AST_MODULE_LOAD_DECLINE;
}
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
if (stasis_rtp_subscription) {
stasis_rtp_subscription = stasis_unsubscribe_and_join(stasis_rtp_subscription);
}
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "RTCP HEPv3 Logger",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.requires = "res_hep",
);
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