/*
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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 "mosquitto_broker_internal.h"
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#include "mqtt_protocol.h"
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#include "packet_mosq.h"
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#include "property_mosq.h"
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#include "send_mosq.h"
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#include "will_mosq.h"
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int handle__disconnect(struct mosquitto_db *db, struct mosquitto *context)
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{
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int rc;
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uint8_t reason_code = 0;
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mosquitto_property *properties = NULL;
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if(!context){
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return MOSQ_ERR_INVAL;
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}
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if(context->protocol == mosq_p_mqtt5 && context->in_packet.remaining_length > 1){
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/* FIXME - must handle reason code */
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rc = packet__read_byte(&context->in_packet, &reason_code);
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if(rc) return rc;
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if(context->in_packet.remaining_length > 2){
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rc = property__read_all(CMD_DISCONNECT, &context->in_packet, &properties);
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if(rc) return rc;
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}
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}
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rc = property__process_disconnect(context, &properties);
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if(rc){
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if(rc == MOSQ_ERR_PROTOCOL){
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send__disconnect(context, MQTT_RC_PROTOCOL_ERROR, NULL);
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}
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mosquitto_property_free_all(&properties);
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return rc;
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}
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mosquitto_property_free_all(&properties); /* FIXME - TEMPORARY UNTIL PROPERTIES PROCESSED */
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if(context->in_packet.remaining_length != 0){
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return MOSQ_ERR_PROTOCOL;
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}
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log__printf(NULL, MOSQ_LOG_DEBUG, "Received DISCONNECT from %s", context->id);
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if(context->protocol == mosq_p_mqtt311 || context->protocol == mosq_p_mqtt5){
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if((context->in_packet.command&0x0F) != 0x00){
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do_disconnect(db, context, MOSQ_ERR_PROTOCOL);
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return MOSQ_ERR_PROTOCOL;
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}
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}
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if(reason_code == MQTT_RC_DISCONNECT_WITH_WILL_MSG){
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context__set_state(context, mosq_cs_disconnect_with_will);
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}else{
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will__clear(context);
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context__set_state(context, mosq_cs_disconnecting);
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}
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do_disconnect(db, context, MOSQ_ERR_SUCCESS);
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return MOSQ_ERR_SUCCESS;
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}
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