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/**
* @file publish.c MQTT client -- publish
*
* Copyright (C) 2017 Creytiv.com
*/
#include <mosquitto.h>
#include <re.h>
#include <baresip.h>
#include "mqtt.h"
/*
* This file contains functions for sending outgoing messages
* from baresip to broker (publish)
*/
static int add_rtcp_stats(struct odict *od_parent, const struct rtcp_stats *rs)
{
struct odict *od = NULL, *tx = NULL, *rx = NULL;
int err = 0;
if (!od_parent || !rs)
return EINVAL;
err = odict_alloc(&od, 8);
err |= odict_alloc(&tx, 8);
err |= odict_alloc(&rx, 8);
if (err)
goto out;
err = odict_entry_add(tx, "sent", ODICT_INT, (int64_t)rs->tx.sent);
err |= odict_entry_add(tx, "lost", ODICT_INT, (int64_t)rs->tx.lost);
err |= odict_entry_add(tx, "jit", ODICT_INT, (int64_t)rs->tx.jit);
if (err)
goto out;
err = odict_entry_add(rx, "sent", ODICT_INT, (int64_t)rs->rx.sent);
err |= odict_entry_add(rx, "lost", ODICT_INT, (int64_t)rs->rx.lost);
err |= odict_entry_add(rx, "jit", ODICT_INT, (int64_t)rs->rx.jit);
if (err)
goto out;
err = odict_entry_add(od, "tx", ODICT_OBJECT, tx);
err |= odict_entry_add(od, "rx", ODICT_OBJECT, rx);
err |= odict_entry_add(od, "rtt", ODICT_INT, (int64_t)rs->rtt);
if (err)
goto out;
/* add object to the parent */
err = odict_entry_add(od_parent, "rtcp_stats", ODICT_OBJECT, od);
if (err)
goto out;
out:
mem_deref(od);
return err;
}
/*
* Relay UA events as publish messages to the Broker
*
* XXX: move JSON encoding to baresip core
*/
static void ua_event_handler(struct ua *ua, enum ua_event ev,
struct call *call, const char *prm, void *arg)
{
struct mqtt *mqtt = arg;
const char *event_str = uag_event_str(ev);
struct odict *od = NULL;
int err;
err = odict_alloc(&od, 8);
if (err)
return;
err |= odict_entry_add(od, "type", ODICT_STRING, event_str);
err |= odict_entry_add(od, "accountaor", ODICT_STRING, ua_aor(ua));
if (err)
goto out;
if (call) {
const char *dir;
dir = call_is_outgoing(call) ? "outgoing" : "incoming";
err |= odict_entry_add(od, "direction", ODICT_STRING, dir);
err |= odict_entry_add(od, "peeruri",
ODICT_STRING, call_peeruri(call));
if (err)
goto out;
}
if (str_isset(prm)) {
err = odict_entry_add(od, "param", ODICT_STRING, prm);
if (err)
goto out;
}
if (ev == UA_EVENT_CALL_RTCP) {
struct stream *strm = NULL;
if (0 == str_casecmp(prm, "audio"))
strm = audio_strm(call_audio(call));
else if (0 == str_casecmp(prm, "video"))
strm = video_strm(call_video(call));
err = add_rtcp_stats(od, stream_rtcp_stats(strm));
if (err)
goto out;
}
err = mqtt_publish_message(mqtt, "/baresip/event", "%H",
json_encode_odict, od);
if (err) {
warning("mqtt: failed to publish message (%m)\n", err);
goto out;
}
out:
mem_deref(od);
}
int mqtt_publish_message(struct mqtt *mqtt, const char *topic,
const char *fmt, ...)
{
char *message;
va_list ap;
int ret;
int err = 0;
if (!mqtt || !topic || !fmt)
return EINVAL;
va_start(ap, fmt);
err = re_vsdprintf(&message, fmt, ap);
va_end(ap);
if (err)
return err;
ret = mosquitto_publish(mqtt->mosq,
NULL,
topic,
(int)str_len(message),
message,
0,
false);
if (ret != MOSQ_ERR_SUCCESS) {
warning("mqtt: failed to publish (%s)\n",
mosquitto_strerror(ret));
err = EINVAL;
goto out;
}
out:
mem_deref(message);
return err;
}
int mqtt_publish_init(struct mqtt *mqtt)
{
int err;
err = uag_event_register(ua_event_handler, mqtt);
if (err)
return err;
return err;
}
void mqtt_publish_close(void)
{
uag_event_unregister(&ua_event_handler);
}
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