326292681a
This comes in the form of: * Per listener maximum_qos option, which can be in the range 0-2. * Changes to mosquitto_publish*() to return MOSQ_ERR_QOS_NOT_SUPPORTED if attempting to publish with a higher QoS than supported. * Bridges will downgrade messages to match the maximum QoS. More tests on the broker side (specifically bridges) are required. This needs bridge support for MQTT 5 first.
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/*
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Copyright (c) 2009-2018 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 "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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int handle__connack(struct mosquitto *mosq)
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{
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uint8_t connect_flags;
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uint8_t reason_code;
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int rc;
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mosquitto_property *properties = NULL;
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char *clientid = NULL;
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assert(mosq);
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rc = packet__read_byte(&mosq->in_packet, &connect_flags);
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if(rc) return rc;
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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->protocol == mosq_p_mqtt5){
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rc = property__read_all(CMD_CONNACK, &mosq->in_packet, &properties);
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if(rc) return rc;
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}
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mosquitto_property_read_string(properties, MQTT_PROP_ASSIGNED_CLIENT_IDENTIFIER, &clientid, false);
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if(clientid){
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if(mosq->id){
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/* We've been sent a client identifier but already have one. This
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* shouldn't happen. */
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free(clientid);
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mosquitto_property_free_all(&properties);
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return MOSQ_ERR_PROTOCOL;
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}else{
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mosq->id = clientid;
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clientid = NULL;
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}
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}
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mosquitto_property_read_byte(properties, MQTT_PROP_MAXIMUM_QOS, &mosq->maximum_qos, false);
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mosquitto_property_read_int16(properties, MQTT_PROP_RECEIVE_MAXIMUM, &mosq->send_maximum, false);
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mosquitto_property_read_int16(properties, MQTT_PROP_SERVER_KEEP_ALIVE, &mosq->keepalive, false);
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mosq->send_quota = mosq->send_maximum;
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log__printf(mosq, MOSQ_LOG_DEBUG, "Client %s received CONNACK (%d)", mosq->id, reason_code);
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pthread_mutex_lock(&mosq->callback_mutex);
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if(mosq->on_connect){
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mosq->in_callback = true;
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mosq->on_connect(mosq, mosq->userdata, reason_code);
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mosq->in_callback = false;
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}
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if(mosq->on_connect_with_flags){
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mosq->in_callback = true;
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mosq->on_connect_with_flags(mosq, mosq->userdata, reason_code, connect_flags);
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mosq->in_callback = false;
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}
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if(mosq->on_connect_v5){
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mosq->in_callback = true;
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mosq->on_connect_v5(mosq, mosq->userdata, reason_code, connect_flags, 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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mosquitto_property_free_all(&properties);
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switch(reason_code){
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case 0:
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if(mosq->state != mosq_cs_disconnecting){
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mosq->state = mosq_cs_connected;
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}
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message__retry_check(mosq);
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return MOSQ_ERR_SUCCESS;
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case 1:
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case 2:
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case 3:
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case 4:
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case 5:
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return MOSQ_ERR_CONN_REFUSED;
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default:
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return MOSQ_ERR_PROTOCOL;
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}
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}
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