/*
|
Copyright (c) 2009-2019 Roger Light <roger@atchoo.org>
|
|
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://www.eclipse.org/legal/epl-v10.html
|
and the Eclipse Distribution License is available at
|
http://www.eclipse.org/org/documents/edl-v10.php.
|
|
Contributors:
|
Roger Light - initial implementation and documentation.
|
*/
|
|
#include "config.h"
|
|
#include <assert.h>
|
#include <string.h>
|
|
#include "mosquitto.h"
|
#include "mosquitto_internal.h"
|
#include "logging_mosq.h"
|
#include "memory_mosq.h"
|
#include "mqtt_protocol.h"
|
#include "messages_mosq.h"
|
#include "packet_mosq.h"
|
#include "property_mosq.h"
|
#include "send_mosq.h"
|
#include "time_mosq.h"
|
#include "util_mosq.h"
|
|
|
int handle__publish(struct mosquitto *mosq)
|
{
|
uint8_t header;
|
struct mosquitto_message_all *message;
|
int rc = 0;
|
uint16_t mid;
|
int slen;
|
mosquitto_property *properties = NULL;
|
|
assert(mosq);
|
|
if(mosq->state != mosq_cs_connected){
|
return MOSQ_ERR_PROTOCOL;
|
}
|
|
message = mosquitto__calloc(1, sizeof(struct mosquitto_message_all));
|
if(!message) return MOSQ_ERR_NOMEM;
|
|
header = mosq->in_packet.command;
|
|
message->dup = (header & 0x08)>>3;
|
message->msg.qos = (header & 0x06)>>1;
|
message->msg.retain = (header & 0x01);
|
|
rc = packet__read_string(&mosq->in_packet, &message->msg.topic, &slen);
|
if(rc){
|
message__cleanup(&message);
|
return rc;
|
}
|
if(!slen){
|
message__cleanup(&message);
|
return MOSQ_ERR_PROTOCOL;
|
}
|
|
if(message->msg.qos > 0){
|
if(mosq->protocol == mosq_p_mqtt5){
|
if(mosq->msgs_in.inflight_quota == 0){
|
message__cleanup(&message);
|
/* FIXME - should send a DISCONNECT here */
|
return MOSQ_ERR_PROTOCOL;
|
}
|
}
|
|
rc = packet__read_uint16(&mosq->in_packet, &mid);
|
if(rc){
|
message__cleanup(&message);
|
return rc;
|
}
|
if(mid == 0){
|
message__cleanup(&message);
|
return MOSQ_ERR_PROTOCOL;
|
}
|
message->msg.mid = (int)mid;
|
}
|
|
if(mosq->protocol == mosq_p_mqtt5){
|
rc = property__read_all(CMD_PUBLISH, &mosq->in_packet, &properties);
|
if(rc) return rc;
|
}
|
|
message->msg.payloadlen = mosq->in_packet.remaining_length - mosq->in_packet.pos;
|
if(message->msg.payloadlen){
|
message->msg.payload = mosquitto__calloc(message->msg.payloadlen+1, sizeof(uint8_t));
|
if(!message->msg.payload){
|
message__cleanup(&message);
|
mosquitto_property_free_all(&properties);
|
return MOSQ_ERR_NOMEM;
|
}
|
rc = packet__read_bytes(&mosq->in_packet, message->msg.payload, message->msg.payloadlen);
|
if(rc){
|
message__cleanup(&message);
|
mosquitto_property_free_all(&properties);
|
return rc;
|
}
|
}
|
log__printf(mosq, MOSQ_LOG_DEBUG,
|
"Client %s received PUBLISH (d%d, q%d, r%d, m%d, '%s', ... (%ld bytes))",
|
mosq->id, message->dup, message->msg.qos, message->msg.retain,
|
message->msg.mid, message->msg.topic,
|
(long)message->msg.payloadlen);
|
|
message->timestamp = mosquitto_time();
|
switch(message->msg.qos){
|
case 0:
|
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;
|
}
|
if(mosq->on_message_v5){
|
mosq->in_callback = true;
|
mosq->on_message_v5(mosq, mosq->userdata, &message->msg, properties);
|
mosq->in_callback = false;
|
}
|
pthread_mutex_unlock(&mosq->callback_mutex);
|
message__cleanup(&message);
|
mosquitto_property_free_all(&properties);
|
return MOSQ_ERR_SUCCESS;
|
case 1:
|
util__decrement_receive_quota(mosq);
|
rc = send__puback(mosq, message->msg.mid, 0);
|
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;
|
}
|
if(mosq->on_message_v5){
|
mosq->in_callback = true;
|
mosq->on_message_v5(mosq, mosq->userdata, &message->msg, properties);
|
mosq->in_callback = false;
|
}
|
pthread_mutex_unlock(&mosq->callback_mutex);
|
message__cleanup(&message);
|
mosquitto_property_free_all(&properties);
|
return rc;
|
case 2:
|
util__decrement_receive_quota(mosq);
|
rc = send__pubrec(mosq, message->msg.mid, 0);
|
pthread_mutex_lock(&mosq->msgs_in.mutex);
|
message->state = mosq_ms_wait_for_pubrel;
|
message__queue(mosq, message, mosq_md_in);
|
pthread_mutex_unlock(&mosq->msgs_in.mutex);
|
mosquitto_property_free_all(&properties);
|
return rc;
|
default:
|
message__cleanup(&message);
|
mosquitto_property_free_all(&properties);
|
return MOSQ_ERR_PROTOCOL;
|
}
|
}
|
