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handle_unsuback.c
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handle_unsuback.c
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/*
Copyright (c) 2009-2019 Roger Light <[email protected]>
All rights reserved. This program and the accompanying materials
are made available under the terms of the Eclipse Public License v1.0
and Eclipse Distribution License v1.0 which accompany this distribution.
The Eclipse Public License is available at
https://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
https://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
Roger Light - initial implementation and documentation.
*/
#include "config.h"
#include <assert.h>
#include <stdio.h>
#include <string.h>
#ifdef WITH_BROKER
# include "mosquitto_broker_internal.h"
#endif
#include "mosquitto.h"
#include "logging_mosq.h"
#include "memory_mosq.h"
#include "messages_mosq.h"
#include "mqtt_protocol.h"
#include "net_mosq.h"
#include "packet_mosq.h"
#include "property_mosq.h"
#include "read_handle.h"
#include "send_mosq.h"
#include "util_mosq.h"
int handle__unsuback(struct mosquitto *mosq)
{
uint16_t mid;
int rc;
mosquitto_property *properties = NULL;
int state;
assert(mosq);
state = mosquitto__get_state(mosq);
if(state != mosq_cs_active){
return MOSQ_ERR_PROTOCOL;
}
#ifdef WITH_BROKER
log__printf(NULL, MOSQ_LOG_DEBUG, "Received UNSUBACK from %s", mosq->id);
#else
log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received UNSUBACK", mosq->id);
#endif
rc = packet__read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
if(mid == 0) return MOSQ_ERR_PROTOCOL;
if(mosq->protocol == mosq_p_mqtt5){
rc = property__read_all(CMD_UNSUBACK, &mosq->in_packet, &properties);
if(rc) return rc;
}
#ifdef WITH_BROKER
/* Immediately free, we don't do anything with Reason String or User Property at the moment */
mosquitto_property_free_all(&properties);
#else
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_unsubscribe){
mosq->in_callback = true;
mosq->on_unsubscribe(mosq, mosq->userdata, mid);
mosq->in_callback = false;
}
if(mosq->on_unsubscribe_v5){
mosq->in_callback = true;
mosq->on_unsubscribe_v5(mosq, mosq->userdata, mid, properties);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
mosquitto_property_free_all(&properties);
#endif
return MOSQ_ERR_SUCCESS;
}