--- mqtt/src/accmqtt.c 2011/11/22 21:12:52 1.1.2.1 +++ mqtt/src/accmqtt.c 2011/12/14 12:45:30 1.1.2.7 @@ -1,4 +1,119 @@ #include "global.h" -#include "dbmqtt.h" +extern const char sql_schema[]; + + +/* + * mqtt_rtlm_log() Log database connection message + * + * @fmt = format string + * @... = argument list + * return: none + */ +static void +mqtt_rtlm_log(const char *fmt, ...) +{ + va_list lst; + + va_start(lst, fmt); + vsyslog(LOG_ERR, fmt, lst); + va_end(lst); +} +#define MQTT_RTLM_LOG(_sql) (assert((_sql)), mqtt_rtlm_log("Error:: SQL #%d - %s", \ + sqlite3_errcode((_sql)), sqlite3_errmsg((_sql)))) + + +/* + * mqtt_rtlm_open() Open database connection + * + * @cfg = loaded config + * return: NULL error or SQL handle + */ +sqlite3 * +mqtt_rtlm_open(sl_config *cfg) +{ + sqlite3 *sql = NULL; + const char *str = NULL; + + if (!cfg) + return NULL; + + if (!sqlite3_threadsafe() || sqlite3_config(SQLITE_CONFIG_SERIALIZED)) + return NULL; + + str = (const char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("name")); + if (!str) { + mqtt_rtlm_log("Error:: Unknown database name ...\n"); + return NULL; + } + + if (sqlite3_open_v2(str, &sql, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL)) { + MQTT_RTLM_LOG(sql); + sqlite3_close(sql); + return NULL; + } + + if (sqlite3_exec(sql, sql_schema, NULL, NULL, NULL)) { + MQTT_RTLM_LOG(sql); + sqlite3_close(sql); + return NULL; + } + return sql; +} + +/* + * mqtt_rtlm_close() Close database connection + * + * @sql = SQL handle + * return: none + */ +void +mqtt_rtlm_close(sqlite3 *sql) +{ + sqlite3_close(sql); +} + +/* + * mqtt_rtlm_login() Verify login account + * + * @cfg = loaded config + * @sql = SQL handle + * @user = username + * @pass = password + * return: -1 error, 0 ALLOW and 1 REJECT + */ +int +mqtt_rtlm_login(sl_config *cfg, sqlite3 *sql, const char *user, const char *pass) +{ + /* insert into Users values (NULL, "", "", 1, strftime('%s','now')); */ + int ret = 0; + sqlite3_stmt *stmt; + char *str, szStmt[BUFSIZ] = { 0 }; + + if (!sql) + return -1; + + str = (char*) cfg_GetAttribute(cfg, CFG("mqtt_acc"), CFG("tbl_users")); + if (!str) { + mqtt_rtlm_log("Error:: not found users table name"); + return -1; + } + snprintf(szStmt, sizeof szStmt, "SELECT DISTINCT Username, Password, Access FROM %s " + "WHERE Username = '%s' AND Password = '%s' AND Access > 0;", str, user, pass); + + if (sqlite3_prepare_v2(sql, szStmt, strlen(szStmt), &stmt, NULL)) { + MQTT_RTLM_LOG(sql); + return -1; + } + while (sqlite3_step(stmt) == SQLITE_ROW) { + if (sqlite3_data_count(stmt) < 1) + ret = 0; + else + ret = 1; + break; + } + sqlite3_finalize(stmt); + + return ret; +}