Add DISCONNECT handling to library.

lib/Makefile

@@ -8,6 +8,7 @@ MOSQ_OBJS=mosquitto.o \
 		  connect.o \
 		  handle_auth.o \
 		  handle_connack.o \
+		  handle_disconnect.o \
 		  handle_ping.o \
 		  handle_pubackcomp.o \
 		  handle_publish.o \
@@ -101,6 +102,9 @@ handle_auth.o : handle_auth.c read_handle.h
 handle_connack.o : handle_connack.c read_handle.h
 	${CROSS_COMPILE}$(CC) $(LIB_CFLAGS) -c $< -o $@
 
+handle_disconnect.o : handle_disconnect.c read_handle.h
+	${CROSS_COMPILE}$(CC) $(LIB_CFLAGS) -c $< -o $@
+
 handle_publish.o : handle_publish.c read_handle.h
 	${CROSS_COMPILE}$(CC) $(LIB_CFLAGS) -c $< -o $@
 

lib/handle_disconnect.c

@@ -0,0 +1,58 @@
+/*
+Copyright (c) 2009-2018 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 <stdio.h>
+#include <string.h>
+
+#include "logging_mosq.h"
+#include "mqtt_protocol.h"
+#include "memory_mosq.h"
+#include "net_mosq.h"
+#include "packet_mosq.h"
+#include "property_mosq.h"
+#include "send_mosq.h"
+#include "util_mosq.h"
+
+int handle__disconnect(struct mosquitto *mosq)
+{
+	int rc;
+	uint8_t reason_code;
+	mosquitto_property *properties = NULL;
+
+	if(!mosq){
+		return MOSQ_ERR_INVAL;
+	}
+
+	rc = packet__read_byte(&mosq->in_packet, &reason_code);
+	if(rc) return rc;
+
+	if(mosq->protocol == mosq_p_mqtt5){
+		rc = property__read_all(CMD_DISCONNECT, &mosq->in_packet, &properties);
+		if(rc) return rc;
+		mosquitto_property_free_all(&properties);
+	}
+
+	log__printf(mosq, MOSQ_LOG_DEBUG, "Received DISCONNECT (%d)", reason_code);
+
+	do_client_disconnect(mosq, reason_code, properties);
+
+	mosquitto_property_free_all(&properties);
+
+	return MOSQ_ERR_SUCCESS;
+}
+

lib/read_handle.c

@@ -57,6 +57,8 @@ int handle__packet(struct mosquitto *mosq)
 			return handle__suback(mosq);
 		case CMD_UNSUBACK:
 			return handle__unsuback(mosq);
+		case CMD_DISCONNECT:
+			return handle__disconnect(mosq);
 		case CMD_AUTH:
 			return handle__auth(mosq);
 		default:

lib/read_handle.h

@@ -26,6 +26,7 @@ int handle__pubackcomp(struct mosquitto_db *db, struct mosquitto *mosq, const ch
 #else
 int handle__packet(struct mosquitto *mosq);
 int handle__connack(struct mosquitto *mosq);
+int handle__disconnect(struct mosquitto *mosq);
 int handle__pubackcomp(struct mosquitto *mosq, const char *type);
 int handle__publish(struct mosquitto *mosq);
 int handle__auth(struct mosquitto *mosq);