Annotation of mqtt/src/client.c, revision 1.4
1.4 ! 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: client.c,v 1.3.2.1 2012/07/03 12:22:56 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: */
1.2 misho 46: #include "global.h"
47: #include "mqtt.h"
48: #include "client.h"
49:
50:
51: int
52: ConnectClient(int sock)
53: {
54: int siz = 0;
55: struct pollfd pfd;
56:
57: siz = mqtt_msgCONNECT(args->msg, (char*) AIT_GET_STR(&args->ConnID), args->ka,
58: (char*) AIT_GET_STR(&args->User), (char*) AIT_GET_STR(&args->Pass),
59: (char*) args->Will.Topic.val.string, (char*) args->Will.Msg.val.string,
60: !args->notClear, args->QoS, args->Retain);
61: if (siz == -1) {
62: printf("Error:: msgCONNECT #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
63: return -1;
64: }
65:
66: siz = send(sock, args->msg->msg_base, siz, 0);
67: if (siz == -1) {
68: printf("Error:: send() #%d - %s\n", errno, strerror(errno));
69: return -1;
70: } else
71: ioVERBOSE(3) printf("Sended CONNECT %d bytes\n", siz);
72:
73: pfd.fd = sock;
74: pfd.events = POLLIN | POLLPRI;
75: switch (poll(&pfd, 1, args->ka * 1000)) {
76: case -1:
77: printf("Error:: poll() #%d - %s\n", errno, strerror(errno));
78: return -1;
79: case 0:
80: ioVERBOSE(3) printf("Timeout reached (%d) ...\n", args->ka * 1000);
81: return -1;
82: }
83: if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL))
84: return -1;
85:
1.3 misho 86: memset(args->msg->msg_base, 0, args->msg->msg_len);
1.2 misho 87: siz = recv(sock, args->msg->msg_base, args->msg->msg_len, 0);
88: if (siz == -1) {
89: printf("Error:: recv() #%d - %s\n", errno, strerror(errno));
90: return -1;
91: } else
92: ioVERBOSE(3) printf("Received %d bytes\n", siz);
93:
94: return (u_char) mqtt_readCONNACK(args->msg);
95: }
96:
97: void *
98: OpenFile(void)
99: {
100: int f, siz = 0;
101: void *mem;
102:
103: if (!args->isFile)
104: return NULL;
105:
106: f = open(AIT_GET_STR(&args->Value), O_RDONLY);
107: if (f == -1) {
108: printf("Error:: in open file #%d - %s\n", errno, strerror(errno));
109: return NULL;
110: }
111: mem = mmap(NULL, siz, PROT_READ, MAP_PRIVATE, f, 0);
112: if (mem == MAP_FAILED) {
113: printf("Error:: in map file #%d - %s\n", errno, strerror(errno));
114: close(f);
115: return NULL;
116: } else
117: close(f);
118:
119: AIT_SET_PTR(&args->Value, mem, siz);
120: return mem;
121: }
122:
123: void
124: CloseFile(void)
125: {
126: if (args->isFile) {
127: munmap(AIT_GET_PTR(&args->Value), AIT_LEN(&args->Value));
128: AIT_FREE_VAL(&args->Value);
129: }
130: }
131:
132: inline int
133: SendTo(int sock, int siz)
134: {
1.3 misho 135: siz = send(sock, args->msg->msg_base, siz, MSG_NOSIGNAL);
1.2 misho 136: if (siz == -1) {
137: printf("Error:: send() #%d - %s\n", errno, strerror(errno));
138: return -1;
139: } else
1.3 misho 140: ioVERBOSE(3) printf("Sended %d bytes\n", siz);
1.2 misho 141:
142: return siz;
143: }
144:
145: inline int
146: RecvFrom(int sock)
147: {
148: struct pollfd pfd;
149: int siz = 0;
150:
1.3 misho 151: memset(args->msg->msg_base, 0, args->msg->msg_len);
152:
1.2 misho 153: pfd.fd = sock;
154: pfd.events = POLLIN | POLLPRI;
155: do {
156: switch (poll(&pfd, 1, args->ka * 1000)) {
157: case -1:
158: printf("Error:: poll() #%d - %s\n", errno, strerror(errno));
159: return -1;
160: case 0:
161: ioVERBOSE(3) printf("Timeout reached (%d) ...\n", args->ka * 1000);
1.3 misho 162: if (mqtt_KeepAlive(sock, args->ka, 1) == -1)
1.2 misho 163: return -1;
164: continue;
165: }
166: if (pfd.revents & (POLLERR | POLLHUP | POLLNVAL))
167: return -1;
168: } while (0);
169:
170: siz = recv(sock, args->msg->msg_base, args->msg->msg_len, 0);
171: if (siz == -1) {
172: printf("Error:: recv() #%d - %s\n", errno, strerror(errno));
173: return -1;
174: } else
175: ioVERBOSE(3) printf("Received %d bytes\n", siz);
176:
177: return siz;
178: }
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