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start client development

    1: #include "global.h"
    2: #include "rtlm.h"
    3: #include "mqtt.h"
    4: 
    5: 
    6: sl_config cfg;
    7: sqlite3 *acc, *pub;
    8: FILE *logg;
    9: extern char compiled[], compiledby[], compilehost[];
   10: static char szCfgName[MAXPATHLEN];
   11: int Verbose, Kill;
   12: 
   13: char szPublish[STRSIZ];
   14: 
   15: 
   16: static void
   17: Usage(void)
   18: {
   19: 	printf(	" -= MQTT Client =- Publisher/Subscriber from ELWIX\n"
   20: 		"=== %s@%s === Compiled: %s ===\n\n"
   21: 		" Syntax: mqtt [options] <connect_to_broker[:port]> [value_for_publish]\n\n"
   22: 		"\t-p <topic>\tPublish topic\n"
   23: 		"\t-s <topic>\tSubscribe for this topic\n"
   24: 		"\t-q <QoS>\tQoS level (0-at most 1, 1-at least 1, 2-explicit 1)\n"
   25: 		"\t-d\t\tSend duplicate message\n"
   26: 		"\t-r\t\tRetain message from broker\n"
   27: 		"\t-c <config>\tService config\n"
   28: 		"\t-f\t\t'value_for_publish' is file instead text\n"
   29: 		"\t-D\t\tDaemon mode\n"
   30: 		"\t-v\t\tVerbose (more -vvv, more verbose)\n"
   31: 		"\t-h\t\tHelp! This screen\n\n", 
   32: 		compiledby, compilehost, compiled);
   33: }
   34: 
   35: 
   36: int
   37: main(int argc, char **argv)
   38: {
   39: 	char ch, batch = 1, szStr[STRSIZ] = { 0 };
   40: 
   41: 	strlcpy(szCfgName, DEFAULT_CONFIG, sizeof szCfgName);
   42: 	while ((ch = getopt(argc, argv, "p:s:q:drc:fDvh")) != -1)
   43: 		switch (ch) {
   44: 			case 'p':
   45: 				break;
   46: 			case 's':
   47: 				break;
   48: 			case 'q':
   49: 				break;
   50: 			case 'd':
   51: 				break;
   52: 			case 'r':
   53: 				break;
   54: 			case 'f':
   55: 				break;
   56: 			case 'c':
   57: 				strlcpy(szCfgName, optarg, sizeof szCfgName);
   58: 				break;
   59: 			case 'D':
   60: 				batch = 0;
   61: 				break;
   62: 			case 'v':
   63: 				Verbose++;
   64: 				break;
   65: 			case 'h':
   66: 			default:
   67: 				Usage();
   68: 				return 1;
   69: 		}
   70: 	argc -= optind;
   71: 	argv += optind;
   72: 
   73: 	if (LoadConfig(szCfgName, &cfg)) {
   74: 		printf("Error:: can't load #%d - %s\n", cfg_GetErrno(), cfg_GetError());
   75: 		return 1;
   76: 	}
   77: 
   78: 	UnloadConfig(&cfg);
   79: 	return 0;
   80: }