Return to srvside.c CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / libaitmqtt / src

Annotation of libaitmqtt/src/srvside.c, revision 1.1.2.7

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 $
1.1.2.7 ! misho       6: * $Id: srvside.c,v 1.1.2.6 2012/05/05 13:31:48 misho Exp $
1.1.2.4   misho       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
1.1.2.7 ! misho      54:  * @timeout = timeout
1.1.2.2   misho      55:  * return: NULL error or !=NULL allocated server handle
                     56:  */
                     57: mqtt_srv_t *
1.1.2.7 ! misho      58: mqtt_srv_Init(int sock, mqtt_msg_t * __restrict buf, u_short timeout)
1.1.2.2   misho      59: {
                     60:        mqtt_srv_t *srv = NULL;
                     61: 
                     62:        if (!buf || !buf->msg_base || !buf->msg_len)
                     63:                return srv;
                     64: 
                     65:        srv = malloc(sizeof(mqtt_srv_t));
                     66:        if (!srv) {
                     67:                LOGERR;
                     68:                return srv;
                     69:        } else
                     70:                memset(srv, 0, sizeof(mqtt_srv_t));
                     71: 
                     72:        srv->sock = sock;
1.1.2.3   misho      73:        srv->buf = buf;
1.1.2.7 ! misho      74:        srv->timeout = timeout;
1.1.2.2   misho      75: 
                     76:        return srv;
                     77: }
                     78: 
                     79: /*
                     80:  * mqtt_srv_Fini() Finish MQTT server side support
                     81:  *
                     82:  * @psrv = Server handle
                     83:  * return: none
                     84:  */
                     85: void
                     86: mqtt_srv_Fini(mqtt_srv_t ** __restrict psrv)
                     87: {
                     88:        if (psrv && *psrv) {
                     89:                free(*psrv);
                     90:                *psrv = NULL;
                     91:        }
                     92: }
                     93: 
                     94: /*
                     95:  * mqtt_srv_Dispatch() MQTT server dispatcher
                     96:  *
                     97:  * @srv = Server handle
1.1.2.5   misho      98:  * @rlen = Ready bytes to parse
1.1.2.6   misho      99:  * @arg = Argument pass to command callback
1.1.2.2   misho     100:  * return: -1 error or 0 ok
                    101:  */
                    102: int
1.1.2.6   misho     103: mqtt_srv_Dispatch(mqtt_srv_t * __restrict srv, int rlen, void *arg)
1.1.2.2   misho     104: {
                    105:        struct mqtthdr *hdr;
                    106: 
                    107:        if (!srv || !srv->buf->msg_base || !srv->buf->msg_len)
                    108:                return -1;
1.1.2.5   misho     109:        if (srv->buf->msg_len < sizeof(struct mqtthdr) || rlen < sizeof(struct mqtthdr)) {
1.1.2.4   misho     110:                mqtt_SetErr(EINVAL, "Message is too short ...");
1.1.2.2   misho     111:                return -1;
                    112:        }
                    113:        hdr = (struct mqtthdr*) srv->buf->msg_base;
                    114:        if (hdr->mqtt_msg.type > MQTT_TYPE_MAX) {
1.1.2.4   misho     115:                mqtt_SetErr(ENOSYS, "Message type %d not implemented", hdr->mqtt_msg.type);
1.1.2.2   misho     116:                return -1;
                    117:        }
                    118:        if (srv->cmds[hdr->mqtt_msg.type])
1.1.2.5   misho     119:                return srv->cmds[hdr->mqtt_msg.type]((void*) srv, rlen, arg);
1.1.2.2   misho     120: 
1.1.2.4   misho     121:        mqtt_SetErr(ENOTSUP, "Unsupported message type %d", hdr->mqtt_msg.type);
1.1.2.2   misho     122:        return -1;
                    123: }