1: /*************************************************************************
2: * (C) 2011 AITNET - Sofia/Bulgaria - <office@aitbg.com>
3: * by Michael Pounov <misho@aitbg.com>
4: *
5: * $Author: misho $
6: * $Id: pceng.c,v 1.1.2.5 2011/07/22 15:03:30 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
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: #include "pceng.h"
48:
49:
50: int Verbose, Kill;
51: extern char compiled[], compiledby[], compilehost[];
52: sl_config cfg;
53: char szConf[MAXPATHLEN] = DEFAULT_PCENG_CFG;
54:
55:
56: static void
57: Usage()
58: {
59: printf( "-= PCEngines =- events managment tool\n"
60: "=== %s === %s@%s ===\n\n"
61: " Syntax: pceng [options] [[led_no <0|1>] ...]\n"
62: "\n"
63: "\t-v\t\tVerbose ...\n"
64: "\t-D\t\tRun in background mode ...\n"
65: "\t-c <conf>\tConfig events file ...\n"
66: "\n", compiled, compiledby, compilehost);
67: }
68:
69: static void
70: sigHand(int sig)
71: {
72: int stat;
73:
74: switch (sig) {
75: case SIGHUP:
76: UnloadConfig(&cfg);
77: if (LoadConfig(szConf, &cfg)) {
78: syslog(LOG_ERR, "Error:: #%d - %s", cfg_GetErrno(), cfg_GetError());
79: raise(SIGTERM);
80: }
81: VERB(1) syslog(LOG_WARNING, "Reload config %s", szConf);
82: break;
83: case SIGTERM:
84: VERB(1) syslog(LOG_WARNING, "Kill process ...");
85: Kill++;
86: break;
87: case SIGCHLD:
88: while (waitpid(-1, &stat, WNOHANG) > 0);
89: }
90: }
91:
92:
93: int
94: main(int argc, char **argv)
95: {
96: char ch, ledno;
97: int i, io, ret = 0, mode = 1;
98: struct sigaction sact;
99:
100: while ((ch = getopt(argc, argv, "vhDc:")) != -1)
101: switch (ch) {
102: case 'c':
103: strlcpy(szConf, optarg, sizeof szConf);
104: break;
105: case 'D':
106: mode = 0;
107: break;
108: case 'v':
109: Verbose++;
110: break;
111: case 'h':
112: default:
113: Usage();
114: return 1;
115: }
116: argc -= optind;
117: argv += optind;
118:
119: if (!mode)
120: openlog("pceng", LOG_CONS | LOG_PID, LOG_DAEMON);
121: else
122: openlog("pceng", LOG_CONS | LOG_PID | LOG_PERROR, LOG_USER);
123:
124: io = open(_PATH_DEVIO, O_RDWR);
125: if (io == -1) {
126: printf("Error:: in open dev %s #%d - %s\n", _PATH_DEVIO, errno, strerror(errno));
127: ret = 2;
128: goto end;
129: }
130:
131: if (argc > 1 && !(argc % 2)) {
132: for (i = 0; !ret && i < argc; i += 2) {
133: ledno = (char) strtol(argv[i], NULL, 0);
134: ch = (char) strtol(argv[i + 1], NULL, 0);
135: ret = LED(io, (u_char) ledno, (u_char) ch);
136: }
137: if (ret)
138: goto end;
139: }
140:
141: if (LoadConfig(szConf, &cfg)) {
142: printf("Error:: #%d - %s\n", cfg_GetErrno(), cfg_GetError());
143: ret = 1;
144: goto end;
145: }
146:
147: sact.sa_handler = sigHand;
148: sigemptyset(&sact.sa_mask);
149: sigaction(SIGHUP, &sact, NULL);
150: sigaction(SIGTERM, &sact, NULL);
151: sigaction(SIGCHLD, &sact, NULL);
152:
153: if (!mode)
154: switch (fork()) {
155: case -1:
156: printf("Error:: #%d - %s\n", errno, strerror(errno));
157: ret = 1;
158: goto end;
159: case 0:
160: VERB(1) printf("Welcome into darkness ...\n");
161:
162: setsid();
163: chdir("/");
164:
165: mode = open(_PATH_DEVNULL, O_RDWR);
166: if (mode > 2) {
167: dup2(mode, STDIN_FILENO);
168: dup2(mode, STDOUT_FILENO);
169: dup2(mode, STDERR_FILENO);
170: close(mode);
171: }
172: break;
173: default:
174: VERB(1) printf("PCENG Going to shadow land ...\n");
175: goto end;
176: }
177:
178: ret = Run(io);
179:
180: end:
181: UnloadConfig(&cfg);
182: if (io > 2)
183: close(io);
184: closelog();
185: return ret;
186: }
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