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commit many new code

    1: #include "global.h"
    2: #include "mqttd.h"
    3: #include "rtlm.h"
    4: #include "utils.h"
    5: #include "daemon.h"
    6: 
    7: 
    8: io_enableDEBUG;
    9: 
   10: sl_config cfg;
   11: sessions_t Sessions;
   12: sched_root_task_t *root;
   13: sqlite3 *acc, *pub;
   14: pthread_mutex_t mtx_sess, mtx_pub;
   15: FILE *logg;
   16: extern char compiled[], compiledby[], compilehost[];
   17: static char szCfgName[MAXPATHLEN];
   18: intptr_t Kill;
   19: 
   20: 
   21: static void
   22: Usage(void)
   23: {
   24: 	printf(	" -= MQTT Broker =- MQTT Service from ELWIX\n"
   25: 		"=== %s@%s === Compiled: %s ===\n\n"
   26: 		"\t-c <config>\tService config\n"
   27: 		"\t-b\t\tBatch mode\n"
   28: 		"\t-v\t\tVerbose (more -vvv, more verbose)\n"
   29: 		"\t-h\t\tHelp! This screen\n\n", 
   30: 		compiledby, compilehost, compiled);
   31: }
   32: 
   33: static void
   34: sigHand(int sig)
   35: {
   36: 	int stat;
   37: 
   38: 	switch (sig) {
   39: 		case SIGHUP:
   40: 			UnloadConfig(&cfg);
   41: 			if (!LoadConfig(szCfgName, &cfg)) {
   42: 				ioDEBUG(1, "Config reload OK!");
   43: 				break;
   44: 			}
   45: 
   46: 			syslog(LOG_ERR, "Error:: can't reload #%d - %s", cfg_GetErrno(), cfg_GetError());
   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: }
   58: 
   59: 
   60: int
   61: main(int argc, char **argv)
   62: {
   63: 	char ch, batch = 0, szStr[STRSIZ];
   64: 	register int i;
   65: 	int sock = -1, ret = 0;
   66: 	struct passwd *pass;
   67: 	struct sigaction sa;
   68: 
   69: 	TAILQ_INIT(&Sessions);
   70: 
   71: 	strlcpy(szCfgName, DEFAULT_CONFIG, sizeof szCfgName);
   72: 	while ((ch = getopt(argc, argv, "hvbc:")) != -1)
   73: 		switch (ch) {
   74: 			case 'c':
   75: 				strlcpy(szCfgName, optarg, sizeof szCfgName);
   76: 				break;
   77: 			case 'b':
   78: 				batch++;
   79: 				break;
   80: 			case 'v':
   81: 				io_incDebug;
   82: 				break;
   83: 			case 'h':
   84: 			default:
   85: 				Usage();
   86: 				return 1;
   87: 		}
   88: 	argc -= optind;
   89: 	argv += optind;
   90: 
   91: 	if (LoadConfig(szCfgName, &cfg)) {
   92: 		printf("Error:: can't load #%d - %s\n", cfg_GetErrno(), cfg_GetError());
   93: 		return 1;
   94: 	}
   95: 	pthread_mutex_init(&mtx_sess, NULL);
   96: 	pthread_mutex_init(&mtx_pub, NULL);
   97: 	openlog("mqttd", LOG_PID | LOG_CONS, LOG_DAEMON);
   98: 	for (i = 0; i < 3; i++)
   99: 		if (!mqttLoadRTLM(&cfg, i)) {
  100: 			printf("Error:: Can't load RTL module\n");
  101: 			while (i--)
  102: 				mqttUnloadRTLM(i);
  103: 			UnloadConfig(&cfg);
  104: 			closelog();
  105: 			pthread_mutex_destroy(&mtx_pub);
  106: 			pthread_mutex_destroy(&mtx_sess);
  107: 			return 2;
  108: 		}
  109: 	acc = call.OpenACC(&cfg);
  110: 	if (!acc) {
  111: 		ret = 3;
  112: 		goto end;
  113: 	}
  114: 	pub = call.OpenPUB(&cfg);
  115: 	if (!pub) {
  116: 		ret = 3;
  117: 		goto end;
  118: 	}
  119: 	logg = call.OpenLOG(&cfg);
  120: 	if (!logg) {
  121: 		ret = 3;
  122: 		goto end;
  123: 	}
  124: 
  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
  156: 		ioVERBOSE(1) printf("Start service in batch mode ...\n");
  157: 
  158: 	memset(&sa, 0, sizeof sa);
  159: 	sigemptyset(&sa.sa_mask);
  160: 	sa.sa_handler = sigHand;
  161: 	sigaction(SIGHUP, &sa, NULL);
  162: 	sigaction(SIGTERM, &sa, NULL);
  163: 	sigaction(SIGCHLD, &sa, NULL);
  164: 	sigaction(SIGPIPE, &sa, NULL);
  165: 	ioDEBUG(2, "Service is ready for start engine ...");
  166: 
  167: 	if ((sock = srv_Socket(&cfg)) == -1) {
  168: 		ret = 4;
  169: 		goto end;
  170: 	}
  171: 
  172: 	cfg_LoadAttribute(&cfg, CFG("mqttd"), CFG("user"), CFG(szStr), sizeof szStr, MQTT_USER);
  173: 	pass = getpwnam(szStr);
  174: 	if (pass) {
  175: 		setgid(pass->pw_gid);
  176: 		setuid(pass->pw_uid);
  177: 		ioDEBUG(2, "Try to change group #%d and user #%d", pass->pw_gid, pass->pw_uid);
  178: 	}
  179: 
  180: 	if (!(root = schedBegin())) {
  181: 		printf("Error:: scheduler #%d - %s\n", sched_GetErrno(), sched_GetError());
  182: 		ret = 6;
  183: 		goto end;
  184: 	}
  185: 
  186: 	Run(sock);
  187: 
  188: 	schedEnd(&root);
  189: end:
  190: 	srv_Close(sock);
  191: 	call.CloseLOG(logg);
  192: 	call.ClosePUB(pub);
  193: 	call.CloseACC(acc);
  194: 	for (i = 0; i < 3; i++)
  195: 		mqttUnloadRTLM(i);
  196: 	closelog();
  197: 	UnloadConfig(&cfg);
  198: 	pthread_mutex_destroy(&mtx_pub);
  199: 	pthread_mutex_destroy(&mtx_sess);
  200: 	return ret;
  201: }