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1.1 misho 1: #include "global.h"
1.2 misho 2: #include "mqttd.h"
3: #include "rtlm.h"
4: #include "utils.h"
5: #include "daemon.h"
6:
7:
8: io_enableDEBUG;
9:
1.2.2.1 misho 10: cfg_root_t cfg;
1.2 misho 11: sessions_t Sessions;
12: sched_root_task_t *root;
13: sqlite3 *acc, *pub;
14: FILE *logg;
15: extern char compiled[], compiledby[], compilehost[];
16: static char szCfgName[MAXPATHLEN];
1.2.2.6 misho 17: volatile intptr_t Kill;
1.2 misho 18:
19:
20: static void
21: Usage(void)
22: {
23: printf( " -= MQTT Broker =- MQTT Service from ELWIX\n"
24: "=== %s@%s === Compiled: %s ===\n\n"
25: "\t-c <config>\tService config\n"
26: "\t-b\t\tBatch mode\n"
27: "\t-v\t\tVerbose (more -vvv, more verbose)\n"
28: "\t-h\t\tHelp! This screen\n\n",
29: compiledby, compilehost, compiled);
30: }
31:
32: static void
33: sigHand(int sig)
34: {
35: int stat;
36:
37: switch (sig) {
38: case SIGHUP:
1.2.2.1 misho 39: cfgUnloadConfig(&cfg);
40: if (!cfgLoadConfig(szCfgName, &cfg)) {
1.2 misho 41: ioDEBUG(1, "Config reload OK!");
42: break;
43: }
44:
1.2.2.4 misho 45: ioLIBERR(cfg);
1.2.2.10! misho 46: case SIGINT:
1.2 misho 47: case SIGTERM:
48: ioDEBUG(1, "Terminate MQTT service in progress");
49: Kill++;
50: break;
51: case SIGCHLD:
52: while (waitpid(-1, &stat, WNOHANG) > 0);
53: break;
54: case SIGPIPE:
55: break;
56: }
57: }
1.1 misho 58:
59:
60: int
61: main(int argc, char **argv)
62: {
1.2.2.1 misho 63: char ch, batch = 0;
1.2 misho 64: register int i;
65: int sock = -1, ret = 0;
66: struct passwd *pass;
67: struct sigaction sa;
1.2.2.1 misho 68: ait_val_t v;
1.2 misho 69:
70: TAILQ_INIT(&Sessions);
71:
72: strlcpy(szCfgName, DEFAULT_CONFIG, sizeof szCfgName);
73: while ((ch = getopt(argc, argv, "hvbc:")) != -1)
74: switch (ch) {
75: case 'c':
76: strlcpy(szCfgName, optarg, sizeof szCfgName);
77: break;
78: case 'b':
79: batch++;
80: break;
81: case 'v':
82: io_incDebug;
83: break;
84: case 'h':
85: default:
86: Usage();
87: return 1;
88: }
89: argc -= optind;
90: argv += optind;
91:
1.2.2.1 misho 92: if (cfgLoadConfig(szCfgName, &cfg)) {
1.2 misho 93: printf("Error:: can't load #%d - %s\n", cfg_GetErrno(), cfg_GetError());
94: return 1;
95: }
96: openlog("mqttd", LOG_PID | LOG_CONS, LOG_DAEMON);
1.2.2.1 misho 97: /* load 3 plugins */
1.2 misho 98: for (i = 0; i < 3; i++)
99: if (!mqttLoadRTLM(&cfg, i)) {
100: printf("Error:: Can't load RTL module\n");
1.2.2.9 misho 101: mqttUnloadRTLM(acc);
102: mqttUnloadRTLM(pub);
103: mqttUnloadRTLM(logg);
1.2.2.1 misho 104: cfgUnloadConfig(&cfg);
1.2 misho 105: closelog();
106: return 2;
107: }
108: acc = call.OpenACC(&cfg);
109: if (!acc) {
110: ret = 3;
111: goto end;
112: }
113: pub = call.OpenPUB(&cfg);
114: if (!pub) {
115: ret = 3;
116: goto end;
117: }
118: logg = call.OpenLOG(&cfg);
119: if (!logg) {
120: ret = 3;
121: goto end;
122: }
123:
1.2.2.9 misho 124:
1.2 misho 125: if (mqttMkDir(&cfg)) {
126: printf("Error:: in statedir #%d - %s\n", errno, strerror(errno));
127: ret = 3;
128: goto end;
129: }
130:
131: if (!batch)
132: switch (fork()) {
133: case -1:
134: printf("Error:: in fork() #%d - %s\n", errno, strerror(errno));
135: ret = 5;
136: goto end;
137: case 0:
138: setsid();
139:
140: ret = open("/dev/null", O_RDWR);
141: if (ret != -1) {
142: dup2(ret, STDIN_FILENO);
143: dup2(ret, STDOUT_FILENO);
144: dup2(ret, STDERR_FILENO);
145: close(ret);
146: }
147: ioDEBUG(2, "Welcome MQTT service into shadow land!");
148: break;
149: default:
150: ioDEBUG(2, "MQTT service go to shadow land ...");
151: sleep(1);
152: ret = 0;
153: goto end;
154: }
155: else
1.2.2.3 misho 156: ioDEBUG(1, "Start service in batch mode ...");
1.2 misho 157:
158: memset(&sa, 0, sizeof sa);
159: sigemptyset(&sa.sa_mask);
160: sa.sa_handler = sigHand;
161: sigaction(SIGHUP, &sa, NULL);
1.2.2.10! misho 162: sigaction(SIGINT, &sa, NULL);
1.2 misho 163: sigaction(SIGTERM, &sa, NULL);
164: sigaction(SIGCHLD, &sa, NULL);
165: sigaction(SIGPIPE, &sa, NULL);
1.2.2.2 misho 166: ioDEBUG(2, "Service is ready for starting engine ...");
1.2 misho 167:
168: if ((sock = srv_Socket(&cfg)) == -1) {
169: ret = 4;
170: goto end;
171: }
172:
1.2.2.1 misho 173: cfg_loadAttribute(&cfg, "mqttd", "user", &v, MQTT_USER);
174: pass = getpwnam(AIT_GET_STR(&v));
175: AIT_FREE_VAL(&v);
1.2 misho 176: if (pass) {
177: setgid(pass->pw_gid);
178: setuid(pass->pw_uid);
179: ioDEBUG(2, "Try to change group #%d and user #%d", pass->pw_gid, pass->pw_uid);
180: }
181:
182: if (!(root = schedBegin())) {
1.2.2.3 misho 183: ioLIBERR(sched);
1.2 misho 184: ret = 6;
185: goto end;
186: }
187:
1.2.2.3 misho 188: /* go catch the cat ... */
1.2 misho 189: Run(sock);
190:
191: schedEnd(&root);
1.2.2.3 misho 192: end: /* free all resources */
1.2 misho 193: srv_Close(sock);
194: call.CloseLOG(logg);
195: call.ClosePUB(pub);
196: call.CloseACC(acc);
1.2.2.9 misho 197: mqttUnloadRTLM(acc);
198: mqttUnloadRTLM(pub);
199: mqttUnloadRTLM(logg);
1.2.2.1 misho 200: cfgUnloadConfig(&cfg);
1.2.2.9 misho 201: closelog();
1.2 misho 202: return ret;
1.1 misho 203: }