/*
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Copyright (c) 2009-2019 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 v1.0
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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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http://www.eclipse.org/legal/epl-v10.html
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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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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 "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 "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__pubrec(struct mosquitto_db *db, struct mosquitto *mosq)
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{
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uint8_t reason_code = 0;
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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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assert(mosq);
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if(mosq->state != mosq_cs_connected){
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return MOSQ_ERR_PROTOCOL;
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}
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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 && mosq->in_packet.remaining_length > 2){
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rc = packet__read_byte(&mosq->in_packet, &reason_code);
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if(rc) return rc;
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if(mosq->in_packet.remaining_length > 3){
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rc = property__read_all(CMD_PUBREC, &mosq->in_packet, &properties);
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if(rc) return rc;
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/* Immediately free, we don't do anything with Reason String or User Property at the moment */
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mosquitto_property_free_all(&properties);
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}
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}
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#ifdef WITH_BROKER
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log__printf(NULL, MOSQ_LOG_DEBUG, "Received PUBREC from %s (Mid: %d)", mosq->id, mid);
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if(reason_code < 0x80){
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rc = db__message_update_outgoing(mosq, mid, mosq_ms_wait_for_pubcomp, 2);
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}else{
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return db__message_delete_outgoing(db, mosq, mid, mosq_ms_wait_for_pubrec, 2);
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}
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#else
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UNUSED(db);
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log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PUBREC (Mid: %d)", mosq->id, mid);
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if(reason_code < 0x80 || mosq->protocol != mosq_p_mqtt5){
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rc = message__out_update(mosq, mid, mosq_ms_wait_for_pubcomp, 2);
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}else{
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if(!message__delete(mosq, mid, mosq_md_out, 2)){
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/* Only inform the client the message has been sent once. */
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pthread_mutex_lock(&mosq->callback_mutex);
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if(mosq->on_publish_v5){
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mosq->in_callback = true;
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mosq->on_publish_v5(mosq, mosq->userdata, mid, reason_code, properties);
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mosq->in_callback = false;
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}
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pthread_mutex_unlock(&mosq->callback_mutex);
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}
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util__increment_send_quota(mosq);
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pthread_mutex_lock(&mosq->msgs_out.mutex);
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message__release_to_inflight(mosq, mosq_md_out);
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pthread_mutex_unlock(&mosq->msgs_out.mutex);
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return MOSQ_ERR_SUCCESS;
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}
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#endif
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if(rc == MOSQ_ERR_NOT_FOUND){
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log__printf(mosq, MOSQ_LOG_WARNING, "Warning: Received PUBREC from %s for an unknown packet identifier %d.", mosq->id, mid);
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}else if(rc != MOSQ_ERR_SUCCESS){
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return rc;
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}
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rc = send__pubrel(mosq, mid);
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if(rc) return rc;
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return MOSQ_ERR_SUCCESS;
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}
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