Annotation of libaitmqtt/src/srvside.c, revision 1.2.4.1
1.2 misho 1: /*************************************************************************
2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
3: * by Michael Pounov <misho@openbsd-bg.org>
4: *
5: * $Author: misho $
1.2.4.1 ! misho 6: * $Id: srvside.c,v 1.2 2012/06/20 15:02:24 misho Exp $
1.2 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: */
46: #include "global.h"
47:
48:
49: /*
1.2.4.1 ! misho 50: * mqtt_srv_cliInit() Init MQTT server side support for clients
1.2 misho 51: *
52: * @sock = Client socket from accept()
53: * @buf = Message buffer
54: * @timeout = timeout
55: * return: NULL error or !=NULL allocated server handle
56: */
57: mqtt_srv_t *
1.2.4.1 ! misho 58: mqtt_srv_cliInit(int sock, mqtt_msg_t * __restrict buf, u_short timeout)
1.2 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;
73: srv->buf = buf;
74: srv->timeout = timeout;
75:
76: return srv;
77: }
78:
79: /*
1.2.4.1 ! misho 80: * mqtt_srv_cliFini() Finish MQTT server side support for clients
1.2 misho 81: *
82: * @psrv = Server handle
83: * return: none
84: */
85: void
1.2.4.1 ! misho 86: mqtt_srv_cliFini(mqtt_srv_t ** __restrict psrv)
1.2 misho 87: {
88: if (psrv && *psrv) {
89: free(*psrv);
90: *psrv = NULL;
91: }
92: }
93:
94: /*
1.2.4.1 ! misho 95: * mqtt_srv_cliDispatch() MQTT server dispatcher for clients
1.2 misho 96: *
97: * @srv = Server handle
98: * @rlen = Ready bytes to parse
99: * @arg = Argument pass to command callback
100: * return: -1 error or 0 ok
101: */
102: int
1.2.4.1 ! misho 103: mqtt_srv_cliDispatch(mqtt_srv_t * __restrict srv, int rlen, void *arg)
1.2 misho 104: {
105: struct mqtthdr *hdr;
106:
107: if (!srv || !srv->buf->msg_base || !srv->buf->msg_len)
108: return -1;
109: if (srv->buf->msg_len < sizeof(struct mqtthdr) || rlen < sizeof(struct mqtthdr)) {
110: mqtt_SetErr(EINVAL, "Message is too short ...");
111: return -1;
112: }
113: hdr = (struct mqtthdr*) srv->buf->msg_base;
114: if (hdr->mqtt_msg.type > MQTT_TYPE_MAX) {
115: mqtt_SetErr(ENOSYS, "Message type %d not implemented", hdr->mqtt_msg.type);
116: return -1;
117: }
118: if (srv->cmds[hdr->mqtt_msg.type])
119: return srv->cmds[hdr->mqtt_msg.type]((void*) srv, rlen, arg);
120:
121: mqtt_SetErr(ENOTSUP, "Unsupported message type %d", hdr->mqtt_msg.type);
122: return -1;
123: }
1.2.4.1 ! misho 124:
! 125:
! 126: /*
! 127: * mqtt_srv_Create() - Create server socket
! 128: *
! 129: * @sa = Server bind address
! 130: * @salen = Server struct sockaddr size
! 131: * return: -1 error or >-1 server socket
! 132: */
! 133: int
! 134: mqtt_srv_Create(struct sockaddr * __restrict sa, int salen)
! 135: {
! 136: int s = -1, n = 1;
! 137:
! 138: if (!sa)
! 139: return -1;
! 140:
! 141: s = socket(sa->sa_family, SOCK_STREAM, 0);
! 142: if (s == -1) {
! 143: LOGERR;
! 144: return -1;
! 145: }
! 146: if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &n, sizeof n) == -1) {
! 147: LOGERR;
! 148: close(s);
! 149: return -1;
! 150: }
! 151: if (bind(s, sa, salen) == -1) {
! 152: LOGERR;
! 153: close(s);
! 154: return -1;
! 155: }
! 156:
! 157: return s;
! 158: }
! 159:
! 160: /*
! 161: * mqtt_srv_Destroy() - Close server socket
! 162: *
! 163: * @sock = Server socket
! 164: * return: -1 error or 0 ok
! 165: */
! 166: int
! 167: mqtt_srv_Destroy(int sock)
! 168: {
! 169: shutdown(sock, SHUT_RDWR);
! 170: return close(sock);
! 171: }
! 172:
! 173: /*
! 174: * mqtt_srv_Listen() - Listen server socket
! 175: *
! 176: * @sock = Server socket
! 177: * @maxconn = max number of pending connections
! 178: * @nb = Non block socket
! 179: * return: -1 error or 0 ok
! 180: */
! 181: int
! 182: mqtt_srv_Listen(int sock, int maxconn, int nb)
! 183: {
! 184: if (!maxconn)
! 185: maxconn = SOMAXCONN;
! 186:
! 187: if (listen(sock, maxconn) == -1) {
! 188: LOGERR;
! 189: return -1;
! 190: } else
! 191: ioctl(sock, FIONBIO, nb);
! 192:
! 193: return 0;
! 194: }
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