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104 lines
2.6 KiB
C
104 lines
2.6 KiB
C
/*
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Copyright (c) 2009-2021 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License 2.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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https://www.eclipse.org/legal/epl-2.0/
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include "config.h"
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#include <assert.h>
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#include <stdio.h>
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#include <string.h>
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#ifdef WITH_BROKER
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# include "mosquitto_broker_internal.h"
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#endif
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#include "callbacks.h"
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#include "mosquitto.h"
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#include "logging_mosq.h"
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#include "memory_mosq.h"
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#include "messages_mosq.h"
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#include "mqtt_protocol.h"
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#include "net_mosq.h"
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#include "packet_mosq.h"
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#include "property_mosq.h"
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#include "read_handle.h"
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#include "send_mosq.h"
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#include "util_mosq.h"
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int handle__unsuback(struct mosquitto *mosq)
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{
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uint16_t mid;
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int rc;
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mosquitto_property *properties = NULL;
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int *reason_codes = NULL;
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int reason_code_count = 0;
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assert(mosq);
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if(mosquitto__get_state(mosq) != mosq_cs_active){
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return MOSQ_ERR_PROTOCOL;
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}
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if(mosq->in_packet.command != CMD_UNSUBACK){
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return MOSQ_ERR_MALFORMED_PACKET;
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}
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#ifdef WITH_BROKER
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if(mosq->bridge == NULL){
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/* Client is not a bridge, so shouldn't be sending SUBACK */
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return MOSQ_ERR_PROTOCOL;
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}
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log__printf(NULL, MOSQ_LOG_DEBUG, "Received UNSUBACK from %s", SAFE_PRINT(mosq->id));
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#else
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log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received UNSUBACK", SAFE_PRINT(mosq->id));
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#endif
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rc = packet__read_uint16(&mosq->in_packet, &mid);
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if(rc) return rc;
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if(mid == 0) return MOSQ_ERR_PROTOCOL;
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if(mosq->protocol == mosq_p_mqtt5){
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rc = property__read_all(CMD_UNSUBACK, &mosq->in_packet, &properties);
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if(rc) return rc;
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uint8_t byte;
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reason_code_count = (int)(mosq->in_packet.remaining_length - mosq->in_packet.pos);
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reason_codes = mosquitto__malloc((size_t)reason_code_count*sizeof(int));
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if(!reason_codes){
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mosquitto_property_free_all(&properties);
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return MOSQ_ERR_NOMEM;
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}
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for(int i=0; i<reason_code_count; i++){
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rc = packet__read_byte(&mosq->in_packet, &byte);
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if(rc){
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mosquitto__FREE(reason_codes);
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mosquitto_property_free_all(&properties);
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return rc;
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}
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reason_codes[i] = (int)byte;
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}
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}
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#ifndef WITH_BROKER
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callback__on_unsubscribe(mosq, mid, reason_code_count, reason_codes, properties);
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#endif
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mosquitto_property_free_all(&properties);
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mosquitto__FREE(reason_codes);
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return MOSQ_ERR_SUCCESS;
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}
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