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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: 	if (!sqlite3_threadsafe() || sqlite3_config(SQLITE_CONFIG_SERIALIZED))
   43: 		return NULL;
   44: 
   45: 	str = (const char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("name"));
   46: 	if (!str) {
   47: 		mqtt_rtlm_log("Error:: Unknown database name ...\n");
   48: 		return NULL;
   49: 	}
   50: 
   51: 	if (sqlite3_open_v2(str, &sql, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL)) {
   52: 		MQTT_RTLM_LOG(sql);
   53: 		sqlite3_close(sql);
   54: 		return NULL;
   55: 	}
   56: 
   57: 	if (sqlite3_exec(sql, sql_schema, NULL, NULL, NULL)) {
   58: 		MQTT_RTLM_LOG(sql);
   59: 		sqlite3_close(sql);
   60: 		return NULL;
   61: 	}
   62: 	return sql;
   63: }
   64: 
   65: /*
   66:  * mqtt_rtlm_close() Close database connection
   67:  *
   68:  * @sql = SQL handle
   69:  * return: none
   70:  */
   71: void
   72: mqtt_rtlm_close(sqlite3 *sql)
   73: {
   74: 	sqlite3_close(sql);
   75: }
   76: 
   77: /*
   78:  * mqtt_rtlm_login() Verify login account
   79:  *
   80:  * @cfg = loaded config
   81:  * @sql = SQL handle
   82:  * @user = username
   83:  * @pass = password
   84:  * return: -1 error, 0 ALLOW and 1 REJECT
   85:  */
   86: int
   87: mqtt_rtlm_login(sl_config *cfg, sqlite3 *sql, const char *user, const char *pass)
   88: {
   89: 	/* insert into Users values (NULL, "", "", 1, strftime('%s','now')); */
   90: 	int ret = 0;
   91: 	sqlite3_stmt *stmt;
   92: 	char *str, szStmt[BUFSIZ] = { 0 };
   93: 
   94: 	if (!sql)
   95: 		return -1;
   96: 
   97: 	str = (char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("tbl_users"));
   98: 	if (!str) {
   99: 		mqtt_rtlm_log("Error:: not found users table name");
  100: 		return -1;
  101: 	}
  102: 	snprintf(szStmt, sizeof szStmt, "SELECT DISTINCT Username, Password, Access FROM %s "
  103: 			"WHERE Username = '%s' AND Password = '%s' AND Access > 0;", str, user, pass);
  104: 
  105: 	if (sqlite3_prepare_v2(sql, szStmt, strlen(szStmt), &stmt, NULL)) {
  106: 		MQTT_RTLM_LOG(sql);
  107: 		return -1;
  108: 	}
  109: 	while (sqlite3_step(stmt) == SQLITE_ROW) {
  110: 		if (sqlite3_data_count(stmt) < 1)
  111: 			ret = 0;
  112: 		else
  113: 			ret = 1;
  114: 		break;
  115: 	}
  116: 	sqlite3_finalize(stmt);
  117: 
  118: 	return ret;
  119: }