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    1: #include "global.h"
    2: 
    3: 
    4: extern const char sql_schema[];
    5: 
    6: 
    7: /*
    8:  * mqtt_rtlm_log() Log database connection message
    9:  *
   10:  * @fmt = format string
   11:  * @... = argument list
   12:  * return: none
   13:  */
   14: static void
   15: mqtt_rtlm_log(const char *fmt, ...)
   16: {
   17: 	va_list lst;
   18: 
   19: 	va_start(lst, fmt);
   20: 	vsyslog(LOG_ERR, fmt, lst);
   21: 	va_end(lst);
   22: }
   23: #define MQTT_RTLM_LOG(_sql)	(assert((_sql)), mqtt_rtlm_log("Error:: SQL #%d - %s", \
   24: 					sqlite3_errcode((_sql)), sqlite3_errmsg((_sql))))
   25: 
   26: 
   27: /*
   28:  * mqtt_rtlm_open() Open database connection
   29:  *
   30:  * @cfg = loaded config
   31:  * return: NULL error or SQL handle
   32:  */
   33: sqlite3 *
   34: mqtt_rtlm_open(sl_config *cfg)
   35: {
   36: 	sqlite3 *sql = NULL;
   37: 	const char *str = NULL;
   38: 
   39: 	if (!cfg)
   40: 		return NULL;
   41: 
   42: 	sqlite3_config(SQLITE_CONFIG_SERIALIZED);
   43: 
   44: 	str = (const char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("name"));
   45: 	if (!str) {
   46: 		mqtt_rtlm_log("Error:: Unknown database name ...\n");
   47: 		return NULL;
   48: 	}
   49: 
   50: 	if (sqlite3_open_v2(str, &sql, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL)) {
   51: 		MQTT_RTLM_LOG(sql);
   52: 		sqlite3_close(sql);
   53: 		return NULL;
   54: 	}
   55: 
   56: 	if (sqlite3_exec(sql, sql_schema, NULL, NULL, NULL)) {
   57: 		MQTT_RTLM_LOG(sql);
   58: 		sqlite3_close(sql);
   59: 		return NULL;
   60: 	}
   61: 	return sql;
   62: }
   63: 
   64: /*
   65:  * mqtt_rtlm_close() Close database connection
   66:  *
   67:  * @sql = SQL handle
   68:  * return: none
   69:  */
   70: void
   71: mqtt_rtlm_close(sqlite3 *sql)
   72: {
   73: 	sqlite3_close(sql);
   74: }
   75: 
   76: /*
   77:  * mqtt_rtlm_login() Verify login account
   78:  *
   79:  * @cfg = loaded config
   80:  * @sql = SQL handle
   81:  * @user = username
   82:  * @pass = password
   83:  * return: -1 error, 0 ALLOW and 1 REJECT
   84:  */
   85: int
   86: mqtt_rtlm_login(sl_config *cfg, sqlite3 *sql, const char *user, const char *pass)
   87: {
   88: 	/* insert into Users values (NULL, "", "", 1, strftime('%s','now')); */
   89: 	int ret = 0;
   90: 	sqlite3_stmt *stmt;
   91: 	char *str, szStmt[BUFSIZ] = { 0 };
   92: 
   93: 	if (!sql)
   94: 		return -1;
   95: 
   96: 	str = (char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("tbl_users"));
   97: 	if (!str) {
   98: 		mqtt_rtlm_log("Error:: not found users table name");
   99: 		return -1;
  100: 	}
  101: 	snprintf(szStmt, sizeof szStmt, "SELECT DISTINCT Username, Password, Access FROM %s "
  102: 			"WHERE Username = '%s' AND Password = '%s' AND Access > 0;", str, user, pass);
  103: 
  104: 	if (sqlite3_prepare_v2(sql, szStmt, strlen(szStmt), &stmt, NULL)) {
  105: 		MQTT_RTLM_LOG(sql);
  106: 		return -1;
  107: 	}
  108: 	while (sqlite3_step(stmt) == SQLITE_ROW) {
  109: 		if (sqlite3_data_count(stmt) < 1)
  110: 			ret = 0;
  111: 		else
  112: 			ret = 1;
  113: 		break;
  114: 	}
  115: 	sqlite3_finalize(stmt);
  116: 
  117: 	return ret;
  118: }