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patch libaitmqtt readCONNECT() for return undefined string with size
allocate if needed will strings

    1: #include "global.h"
    2: #include "mqttd.h"
    3: 
    4: 
    5: extern char cliCmd[], *cliStr[];
    6: 
    7: 
    8: static void *
    9: startSession(sched_task_t *task)
   10: {
   11: 	u_char basebuf[USHRT_MAX];
   12: 	mqtt_cb_t cbs[MQTT_TYPE_MAX + 1] = { 0 };
   13: 	mqtt_msg_t buf = { basebuf, sizeof basebuf };
   14: 	mqtthdr_connflgs_t flg;
   15: 	int ret = 0;
   16: 	struct timeval tv = { 0 };
   17: 	u_short ka;
   18: 	struct tagSession *sess = NULL;
   19: 
   20: 	FTRACE(4);
   21: 
   22: 	sess = malloc(sizeof(struct tagSession));
   23: 	if (!sess) {
   24: 		VERB(3) syslog(LOG_ERR, "Error:: in malloc #%d - %s", errno, strerror(errno));
   25: 		goto end;
   26: 	}
   27: 
   28: 	if (recv(TASK_FD(task), buf.msg_base, buf.msg_len, 0) == -1) {
   29: 		VERB(3) syslog(LOG_ERR, "Error:: recv(%d) #%d - %s", (int) TASK_FD(task), 
   30: 				errno, strerror(errno));
   31: 		goto end;
   32: 	}
   33: 	flg = mqtt_readCONNECT(&buf, &ka, sess->sess_cid, sizeof sess->sess_cid, 
   34: 			sess->sess_user, sizeof sess->sess_user, sess->sess_pass, sizeof sess->sess_pass, 
   35: 			sess->sess_will.topic, sess->sess_will.msg);
   36: 	if (flg.reserved) {
   37: 		VERB(3) syslog(LOG_ERR, "Error:: in MQTT protocol #%d - %s", 
   38: 				mqtt_GetErrno(), mqtt_GetError());
   39: 		goto end;
   40: 	}
   41: 
   42: 	/* check online table for user */
   43: 
   44: end:	/* close client connection */
   45: 	if (sess)
   46: 		free(sess);
   47: 	close(TASK_FD(task));
   48: 	VERB(1) syslog(LOG_DEBUG, "Close client %s with socket=%d", 
   49: 			(char*) TASK_ARG(task), (int) TASK_FD(task));
   50: 	if (TASK_ARG(task))
   51: 		free(TASK_ARG(task));
   52: 	return NULL;
   53: }
   54: 
   55: /* ----------------------------------------------------------------------- */
   56: 
   57: static void *
   58: thrSched(void *arg __unused)
   59: {
   60: 	FTRACE(1);
   61: 
   62: 	schedRun(root, (intptr_t*) &Kill);
   63: 	pthread_exit(NULL);
   64: }
   65: 
   66: int
   67: Run(int sock)
   68: {
   69: 	io_sockaddr_t sa;
   70: 	socklen_t sslen = sizeof sa.ss;
   71: 	int cli;
   72: 	char *str = NULL, szAddr[STRSIZ] = { 0 };
   73: 	pthread_t tid;
   74: 
   75: 	FTRACE(1);
   76: 
   77: 	if (pthread_create(&tid, NULL, thrSched, NULL)) {
   78: 		syslog(LOG_ERR, "Error:: thread scheduler #%d - %s", errno, strerror(errno));
   79: 		return -1;
   80: 	} else
   81: 		pthread_detach(tid);
   82: 	VERB(2) syslog(LOG_DEBUG, "Run scheduler management thread");
   83: 
   84: 	if (listen(sock, SOMAXCONN) == -1) {
   85: 		syslog(LOG_ERR, "Error:: listen(%d) #%d - %s\n", sock, errno, strerror(errno));
   86: 		pthread_cancel(tid);
   87: 		return -1;
   88: 	}
   89: 
   90: 	while (!Kill) {
   91: 		if ((cli = accept(sock, &sa.sa, &sslen)) == -1) {
   92: 			syslog(LOG_ERR, "Error:: accept() #%d - %s", errno, strerror(errno));
   93: 			continue;
   94: 		} else
   95: 			VERB(1) {
   96: 				switch (sa.sa.sa_family) {
   97: 					case AF_INET:
   98: 						inet_ntop(AF_INET, &sa.sin.sin_addr, szAddr, sslen);
   99: 						snprintf(szAddr, sizeof szAddr, "%s:%d", 
  100: 								szAddr, ntohs(sa.sin.sin_port));
  101: 						break;
  102: 					case AF_INET6:
  103: 						inet_ntop(AF_INET6, &sa.sin6.sin6_addr, szAddr, sslen);
  104: 						snprintf(szAddr, sizeof szAddr, "%s:%d", 
  105: 								szAddr, ntohs(sa.sin6.sin6_port));
  106: 						break;
  107: 					case AF_LOCAL:
  108: 						strlcpy(szAddr, sa.sun.sun_path, sizeof szAddr);
  109: 						break;
  110: 					default:
  111: 						close(cli);
  112: 						syslog(LOG_ERR, "Error:: unsupported address type %d", 
  113: 								sa.sa.sa_family);
  114: 						continue;
  115: 				}
  116: 				str = strdup(szAddr);
  117: 				syslog(LOG_DEBUG, "Connected client with socket=%d from %s", cli, str);
  118: 			}
  119: 
  120: 		if (!schedRead(root, startSession, str, cli)) {
  121: 			close(cli);
  122: 			VERB(1) syslog(LOG_DEBUG, "Terminated client with socket=%d", cli);
  123: 			if (str)
  124: 				free(str);
  125: 		}
  126: 	}
  127: 
  128: 	return 0;
  129: }