--- libaitmqtt/inc/mqttapi.h 2012/01/27 15:12:27 1.1.2.2 +++ libaitmqtt/inc/mqttapi.h 2012/06/29 08:22:49 1.2.4.1 @@ -1,3 +1,48 @@ +/************************************************************************* +* (C) 2011 AITNET ltd - Sofia/Bulgaria - +* by Michael Pounov +* +* $Author: misho $ +* $Id: mqttapi.h,v 1.2.4.1 2012/06/29 08:22:49 misho Exp $ +* +************************************************************************** +The ELWIX and AITNET software is distributed under the following +terms: + +All of the documentation and software included in the ELWIX and AITNET +Releases is copyrighted by ELWIX - Sofia/Bulgaria + +Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 + by Michael Pounov . All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. +3. All advertising materials mentioning features or use of this software + must display the following acknowledgement: +This product includes software developed by Michael Pounov +ELWIX - Embedded LightWeight unIX and its contributors. +4. Neither the name of AITNET nor the names of its contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +SUCH DAMAGE. +*/ #ifndef __MQTTAPI_H #define __MQTTAPI_H @@ -5,14 +50,16 @@ #include "aitmqtt.h" +#ifdef API_SERVER_SIDE /* MQTT server structure & hooks */ -/* MQTT command callback. 1st argument is (mqtt_srv_t*) server handle */ -typedef int (*mqtt_cb_t)(void* /*mqtt_srv_t**/, void *); +/* MQTT command callback. 1st argument is (mqtt_srv_t*) server handle, 2nd is ready length */ +typedef int (*mqtt_cb_t)(void* /*mqtt_srv_t**/, int, void *); typedef struct { mqtt_cb_t cmds[MQTT_TYPE_MAX]; int sock; + unsigned short timeout; mqtt_msg_t *buf; } mqtt_srv_t; #define mqtt_srv_setCmd(x, _cmd, _func) (assert((x)), (x)->cmds[(_cmd)] = (_func)) @@ -20,28 +67,138 @@ typedef struct { /* - * mqtt_srv_Init() Init server side actor + * mqtt_srv_cliInit() Init MQTT server side support for clients * * @sock = Client socket from accept() * @buf = Message buffer + * @timeout = timeout * return: NULL error or !=NULL allocated server handle */ -mqtt_srv_t *mqtt_srv_Init(int sock, mqtt_msg_t * __restrict buf); +mqtt_srv_t *mqtt_srv_cliInit(int sock, mqtt_msg_t * __restrict buf, unsigned short timeout); /* - * mqtt_srv_Fini() Finish MQTT server side support + * mqtt_srv_Fini() Finish MQTT server side support for clients * * @psrv = Server handle * return: none */ -void mqtt_srv_Fini(mqtt_srv_t ** __restrict psrv); +void mqtt_srv_cliFini(mqtt_srv_t ** __restrict psrv); /* - * mqtt_srv_Dispatch() MQTT server dispatcher + * mqtt_srv_Dispatch() MQTT server dispatcher for clients * * @srv = Server handle + * @rlen = Ready bytes to parse * @arg = Argument pass to command callback * return: -1 error or 0 ok */ -int mqtt_srv_Dispatch(mqtt_srv_t * __restrict srv, void *arg); +int mqtt_srv_cliDispatch(mqtt_srv_t * __restrict srv, int rlen, void *arg); + +/* + * mqtt_srv_Create() - Create server socket + * + * @sa = Server bind address + * @salen = Server struct sockaddr size + * return: -1 error or >-1 server socket + */ +int mqtt_srv_Create(struct sockaddr * __restrict sa, int salen); +/* + * mqtt_srv_Destroy() - Close server socket + * + * @sock = Server socket + * return: -1 error or 0 ok + */ +int mqtt_srv_Destroy(int sock); +/* + * mqtt_srv_Listen() - Listen server socket + * + * @sock = Server socket + * @maxconn = max number of pending connections + * @nb = Non block socket + * return: -1 error or 0 ok + */ +int mqtt_srv_Listen(int sock, int maxconn, int nb); +#endif + +/* + * mqtt_KeepAlive() - Keep Alive check routine + * + * @sock = connected socket + * @ka = keep alive timeout + * @tries = tries for receive correct ping response, usually ==1 + * return: -1 error, 0 host is alive, 1 timeout session or 2 broken session + */ +int mqtt_KeepAlive(int sock, unsigned short ka, unsigned char tries); + + +#ifdef API_CLIENT_SIDE +/* MQTT client structure */ + +typedef struct { + int sock; + unsigned short timeout; + mqtt_msg_t *buf; +} mqtt_cli_t; + + +/* + * mqtt_cli_Open() - Open client connection to MQTT broker + * + * @addr = brokers address + * @timeout = timeout + * return: NULL error or !=NULL connected to broker + */ +mqtt_cli_t *mqtt_cli_Open(struct sockaddr *addr, unsigned short timeout); +/* + * mqtt_cli_Close() - Close client connection + * + * @cli = connected client + * return: -1 error or 0 disconnected client and freed all resources + */ +int mqtt_cli_Close(mqtt_cli_t ** __restrict cli); + +/* + * mqtt_cli_Subscribe() - Subscribe to broker + * + * @cli = connected client + * @Topics = Topics for subscribes + * @msgID = Message ID + * @Dup = Duplicated request + * @QoS = Message QoS + * return: NULL error or !=NULL allocated array with subscribed QoS responses, + * must be free() result! + */ +unsigned char *mqtt_cli_Subscribe(mqtt_cli_t * __restrict cli, + mqtt_subscr_t * __restrict Topics, unsigned short msgID, + unsigned char Dup, unsigned char QoS); +/* + * mqtt_cli_Unsubscribe() - Unsubscribe from broker + * + * @cli = connected client + * @Topics = Topics for unsubscribes + * @msgID = Message ID + * @Dup = Duplicated request + * @QoS = Message QoS + * return: -1 error or 0 ok + */ +int mqtt_cli_Unsubscribe(mqtt_cli_t * __restrict cli, + mqtt_subscr_t * __restrict Topics, unsigned short msgID, + unsigned char Dup, unsigned char QoS); +/* + * mqtt_cli_Publish() - Publish message to broker + * + * @cli = connected client + * @msgID = Message ID + * @Dup = Duplicated request + * @QoS = Message QoS + * @Retain = Retain message + * @csTopic = Topic + * @pData = Data + * @datLen = Data length + * return: -1 error or > -1 sended bytes + */ +int mqtt_cli_Publish(mqtt_cli_t * __restrict cli, unsigned short msgID, + unsigned char Dup, unsigned char QoS, unsigned char Retain, + const char *csTopic, const void *pData, int datLen); +#endif #endif