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Annotation of libaitmqtt/src/srvside.c, revision 1.1.2.4

1.1.2.4 ! misho       1: /*************************************************************************
        !             2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
        !             3: *  by Michael Pounov <misho@openbsd-bg.org>
        !             4: *
        !             5: * $Author: misho $
        !             6: * $Id: aitmqtt.c,v 1.1.1.1.2.2 2012/02/04 10:40:01 misho Exp $
        !             7: *
        !             8: **************************************************************************
        !             9: The ELWIX and AITNET software is distributed under the following
        !            10: terms:
        !            11: 
        !            12: All of the documentation and software included in the ELWIX and AITNET
        !            13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
        !            14: 
        !            15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
        !            16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
        !            17: 
        !            18: Redistribution and use in source and binary forms, with or without
        !            19: modification, are permitted provided that the following conditions
        !            20: are met:
        !            21: 1. Redistributions of source code must retain the above copyright
        !            22:    notice, this list of conditions and the following disclaimer.
        !            23: 2. Redistributions in binary form must reproduce the above copyright
        !            24:    notice, this list of conditions and the following disclaimer in the
        !            25:    documentation and/or other materials provided with the distribution.
        !            26: 3. All advertising materials mentioning features or use of this software
        !            27:    must display the following acknowledgement:
        !            28: This product includes software developed by Michael Pounov <misho@elwix.org>
        !            29: ELWIX - Embedded LightWeight unIX and its contributors.
        !            30: 4. Neither the name of AITNET nor the names of its contributors
        !            31:    may be used to endorse or promote products derived from this software
        !            32:    without specific prior written permission.
        !            33: 
        !            34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
        !            35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            44: SUCH DAMAGE.
        !            45: */
1.1.2.1   misho      46: #include "global.h"
                     47: 
                     48: 
1.1.2.2   misho      49: /*
                     50:  * mqtt_srv_Init() Init MQTT server side support
                     51:  *
                     52:  * @sock = Client socket from accept()
                     53:  * @buf = Message buffer
                     54:  * return: NULL error or !=NULL allocated server handle
                     55:  */
                     56: mqtt_srv_t *
                     57: mqtt_srv_Init(int sock, mqtt_msg_t * __restrict buf)
                     58: {
                     59:        mqtt_srv_t *srv = NULL;
                     60: 
                     61:        if (!buf || !buf->msg_base || !buf->msg_len)
                     62:                return srv;
                     63: 
                     64:        srv = malloc(sizeof(mqtt_srv_t));
                     65:        if (!srv) {
                     66:                LOGERR;
                     67:                return srv;
                     68:        } else
                     69:                memset(srv, 0, sizeof(mqtt_srv_t));
                     70: 
                     71:        srv->sock = sock;
1.1.2.3   misho      72:        srv->buf = buf;
1.1.2.2   misho      73: 
                     74:        return srv;
                     75: }
                     76: 
                     77: /*
                     78:  * mqtt_srv_Fini() Finish MQTT server side support
                     79:  *
                     80:  * @psrv = Server handle
                     81:  * return: none
                     82:  */
                     83: void
                     84: mqtt_srv_Fini(mqtt_srv_t ** __restrict psrv)
                     85: {
                     86:        if (psrv && *psrv) {
                     87:                free(*psrv);
                     88:                *psrv = NULL;
                     89:        }
                     90: }
                     91: 
                     92: /*
                     93:  * mqtt_srv_Dispatch() MQTT server dispatcher
                     94:  *
                     95:  * @srv = Server handle
                     96:  * @arg = Argument pass to command callback
                     97:  * return: -1 error or 0 ok
                     98:  */
                     99: int
                    100: mqtt_srv_Dispatch(mqtt_srv_t * __restrict srv, void *arg)
                    101: {
                    102:        struct mqtthdr *hdr;
                    103: 
                    104:        if (!srv || !srv->buf->msg_base || !srv->buf->msg_len)
                    105:                return -1;
                    106:        if (srv->buf->msg_len < sizeof(struct mqtthdr)) {
1.1.2.4 ! misho     107:                mqtt_SetErr(EINVAL, "Message is too short ...");
1.1.2.2   misho     108:                return -1;
                    109:        }
                    110:        hdr = (struct mqtthdr*) srv->buf->msg_base;
                    111:        if (hdr->mqtt_msg.type > MQTT_TYPE_MAX) {
1.1.2.4 ! misho     112:                mqtt_SetErr(ENOSYS, "Message type %d not implemented", hdr->mqtt_msg.type);
1.1.2.2   misho     113:                return -1;
                    114:        }
                    115:        if (srv->cmds[hdr->mqtt_msg.type])
                    116:                return srv->cmds[hdr->mqtt_msg.type]((void*) srv, arg);
                    117: 
1.1.2.4 ! misho     118:        mqtt_SetErr(ENOTSUP, "Unsupported message type %d", hdr->mqtt_msg.type);
1.1.2.2   misho     119:        return -1;
                    120: }