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read_handle_shared.c
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read_handle_shared.c
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/*
Copyright (c) 2009-2014 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
http:https://www.eclipse.org/legal/epl-v10.html
and the Eclipse Distribution License is available at
http:https://www.eclipse.org/org/documents/edl-v10.php.
Contributors:
Roger Light - initial implementation and documentation.
*/
#include <assert.h>
#include <stdio.h>
#include <string.h>
#include <mosquitto.h>
#include <logging_mosq.h>
#include <memory_mosq.h>
#include <messages_mosq.h>
#include <mqtt3_protocol.h>
#include <net_mosq.h>
#include <read_handle.h>
#include <send_mosq.h>
#include <util_mosq.h>
#ifdef WITH_BROKER
#include <mosquitto_broker.h>
#endif
int _mosquitto_handle_pingreq(struct mosquitto *mosq)
{
assert(mosq);
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PINGREQ from %s", mosq->id);
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PINGREQ", mosq->id);
#endif
return _mosquitto_send_pingresp(mosq);
}
int _mosquitto_handle_pingresp(struct mosquitto *mosq)
{
assert(mosq);
mosq->ping_t = 0; /* No longer waiting for a PINGRESP. */
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PINGRESP from %s", mosq->id);
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PINGRESP", mosq->id);
#endif
return MOSQ_ERR_SUCCESS;
}
#ifdef WITH_BROKER
int _mosquitto_handle_pubackcomp(struct mosquitto_db *db, struct mosquitto *mosq, const char *type)
#else
int _mosquitto_handle_pubackcomp(struct mosquitto *mosq, const char *type)
#endif
{
uint16_t mid;
int rc;
assert(mosq);
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received %s from %s (Mid: %d)", type, mosq->id, mid);
if(mid){
rc = mqtt3_db_message_delete(db, mosq, mid, mosq_md_out);
if(rc) return rc;
}
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received %s (Mid: %d)", mosq->id, type, mid);
if(!_mosquitto_message_delete(mosq, mid, mosq_md_out)){
/* Only inform the client the message has been sent once. */
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_publish){
mosq->in_callback = true;
mosq->on_publish(mosq, mosq->userdata, mid);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
}
#endif
return MOSQ_ERR_SUCCESS;
}
int _mosquitto_handle_pubrec(struct mosquitto *mosq)
{
uint16_t mid;
int rc;
assert(mosq);
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PUBREC from %s (Mid: %d)", mosq->id, mid);
rc = mqtt3_db_message_update(mosq, mid, mosq_md_out, mosq_ms_wait_for_pubcomp);
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PUBREC (Mid: %d)", mosq->id, mid);
rc = _mosquitto_message_out_update(mosq, mid, mosq_ms_wait_for_pubcomp);
#endif
if(rc) return rc;
rc = _mosquitto_send_pubrel(mosq, mid);
if(rc) return rc;
return MOSQ_ERR_SUCCESS;
}
int _mosquitto_handle_pubrel(struct mosquitto_db *db, struct mosquitto *mosq)
{
uint16_t mid;
#ifndef WITH_BROKER
struct mosquitto_message_all *message = NULL;
#endif
int rc;
assert(mosq);
if(mosq->protocol == mosq_p_mqtt311){
if((mosq->in_packet.command&0x0F) != 0x02){
return MOSQ_ERR_PROTOCOL;
}
}
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received PUBREL from %s (Mid: %d)", mosq->id, mid);
if(mqtt3_db_message_release(db, mosq, mid, mosq_md_in)){
/* Message not found. Still send a PUBCOMP anyway because this could be
* due to a repeated PUBREL after a client has reconnected. */
}
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received PUBREL (Mid: %d)", mosq->id, mid);
if(!_mosquitto_message_remove(mosq, mid, mosq_md_in, &message)){
/* Only pass the message on if we have removed it from the queue - this
* prevents multiple callbacks for the same message. */
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_message){
mosq->in_callback = true;
mosq->on_message(mosq, mosq->userdata, &message->msg);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
_mosquitto_message_cleanup(&message);
}
#endif
rc = _mosquitto_send_pubcomp(mosq, mid);
if(rc) return rc;
return MOSQ_ERR_SUCCESS;
}
int _mosquitto_handle_suback(struct mosquitto *mosq)
{
uint16_t mid;
uint8_t qos;
int *granted_qos;
int qos_count;
int i = 0;
int rc;
assert(mosq);
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received SUBACK from %s", mosq->id);
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received SUBACK", mosq->id);
#endif
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
qos_count = mosq->in_packet.remaining_length - mosq->in_packet.pos;
granted_qos = _mosquitto_malloc(qos_count*sizeof(int));
if(!granted_qos) return MOSQ_ERR_NOMEM;
while(mosq->in_packet.pos < mosq->in_packet.remaining_length){
rc = _mosquitto_read_byte(&mosq->in_packet, &qos);
if(rc){
_mosquitto_free(granted_qos);
return rc;
}
granted_qos[i] = (int)qos;
i++;
}
#ifndef WITH_BROKER
pthread_mutex_lock(&mosq->callback_mutex);
if(mosq->on_subscribe){
mosq->in_callback = true;
mosq->on_subscribe(mosq, mosq->userdata, mid, qos_count, granted_qos);
mosq->in_callback = false;
}
pthread_mutex_unlock(&mosq->callback_mutex);
#endif
_mosquitto_free(granted_qos);
return MOSQ_ERR_SUCCESS;
}
int _mosquitto_handle_unsuback(struct mosquitto *mosq)
{
uint16_t mid;
int rc;
assert(mosq);
#ifdef WITH_BROKER
_mosquitto_log_printf(NULL, MOSQ_LOG_DEBUG, "Received UNSUBACK from %s", mosq->id);
#else
_mosquitto_log_printf(mosq, MOSQ_LOG_DEBUG, "Client %s received UNSUBACK", mosq->id);
#endif
rc = _mosquitto_read_uint16(&mosq->in_packet, &mid);
if(rc) return rc;
#ifndef WITH_BROKER
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;
}
pthread_mutex_unlock(&mosq->callback_mutex);
#endif
return MOSQ_ERR_SUCCESS;
}