800 lines
23 KiB
PHP
800 lines
23 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Frank Karlitschek
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* @copyright 2012 Frank Karlitschek frank@owncloud.org
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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define('MDB2_SCHEMA_DUMP_STRUCTURE', '1');
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class DatabaseException extends Exception {
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private $query;
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public function __construct($message, $query) {
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parent::__construct($message);
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$this->query = $query;
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}
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public function getQuery() {
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return $this->query;
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}
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}
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/**
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* This class manages the access to the database. It basically is a wrapper for
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* Doctrine with some adaptions.
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*/
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class OC_DB {
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const BACKEND_DOCTRINE=2;
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static private $preparedQueries = array();
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static private $cachingEnabled = true;
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/**
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* @var \Doctrine\DBAL\Connection
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*/
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static private $connection; //the prefered connection to use, only Doctrine
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static private $backend=null;
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/**
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* @var Doctrine
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*/
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static private $DOCTRINE=null;
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static private $inTransaction=false;
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static private $prefix=null;
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static private $type=null;
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/**
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* check which backend we should use
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* @return int BACKEND_DOCTRINE
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*/
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private static function getDBBackend() {
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return self::BACKEND_DOCTRINE;
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}
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/**
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* @brief connects to the database
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* @param int $backend
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* @return bool true if connection can be established or false on error
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*
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* Connects to the database as specified in config.php
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*/
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public static function connect($backend=null) {
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if(self::$connection) {
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return true;
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}
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if(is_null($backend)) {
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$backend=self::getDBBackend();
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}
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if($backend==self::BACKEND_DOCTRINE) {
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$success = self::connectDoctrine();
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self::$connection=self::$DOCTRINE;
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self::$backend=self::BACKEND_DOCTRINE;
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}
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return $success;
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}
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/**
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* connect to the database using doctrine
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*
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* @return bool
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*/
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public static function connectDoctrine() {
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if(self::$connection) {
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if(self::$backend!=self::BACKEND_DOCTRINE) {
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self::disconnect();
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} else {
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return true;
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}
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}
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self::$preparedQueries = array();
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// The global data we need
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$name = OC_Config::getValue( "dbname", "owncloud" );
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$host = OC_Config::getValue( "dbhost", "" );
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$user = OC_Config::getValue( "dbuser", "" );
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$pass = OC_Config::getValue( "dbpassword", "" );
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$type = OC_Config::getValue( "dbtype", "sqlite" );
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if(strpos($host, ':')) {
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list($host, $port)=explode(':', $host, 2);
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} else {
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$port=false;
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}
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// do nothing if the connection already has been established
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if(!self::$DOCTRINE) {
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$config = new \Doctrine\DBAL\Configuration();
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switch($type) {
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case 'sqlite':
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case 'sqlite3':
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$datadir=OC_Config::getValue( "datadirectory", OC::$SERVERROOT.'/data' );
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$connectionParams = array(
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'user' => $user,
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'password' => $pass,
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'path' => $datadir.'/'.$name.'.db',
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'driver' => 'pdo_sqlite',
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);
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break;
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case 'mysql':
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$connectionParams = array(
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'user' => $user,
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'password' => $pass,
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'host' => $host,
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'port' => $port,
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'dbname' => $name,
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'charset' => 'UTF8',
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'driver' => 'pdo_mysql',
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);
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break;
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case 'pgsql':
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$connectionParams = array(
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'user' => $user,
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'password' => $pass,
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'host' => $host,
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'port' => $port,
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'dbname' => $name,
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'driver' => 'pdo_pgsql',
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);
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break;
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case 'oci':
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$connectionParams = array(
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'user' => $user,
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'password' => $pass,
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'host' => $host,
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'port' => $port,
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'dbname' => $name,
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'charset' => 'AL32UTF8',
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'driver' => 'oci8',
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);
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break;
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case 'mssql':
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$connectionParams = array(
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'user' => $user,
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'password' => $pass,
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'host' => $host,
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'port' => $port,
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'dbname' => $name,
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'charset' => 'UTF8',
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'driver' => 'pdo_sqlsrv',
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);
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break;
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default:
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return false;
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}
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try {
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self::$DOCTRINE = \Doctrine\DBAL\DriverManager::getConnection($connectionParams, $config);
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} catch(\Doctrine\DBAL\DBALException $e) {
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OC_Log::write('core', $e->getMessage(), OC_Log::FATAL);
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OC_User::setUserId(null);
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// send http status 503
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header('HTTP/1.1 503 Service Temporarily Unavailable');
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header('Status: 503 Service Temporarily Unavailable');
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OC_Template::printErrorPage('Failed to connect to database');
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die();
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}
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}
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return true;
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}
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/**
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* @brief Prepare a SQL query
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* @param string $query Query string
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* @param int $limit
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* @param int $offset
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* @return \Doctrine\DBAL\Statement prepared SQL query
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*
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* SQL query via Doctrine prepare(), needs to be execute()'d!
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*/
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static public function prepare( $query , $limit=null, $offset=null ) {
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if (!is_null($limit) && $limit != -1) {
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//Doctrine does not handle limit and offset.
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//FIXME: check limit notation for other dbs
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//the following sql thus might needs to take into account db ways of representing it
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//(oracle has no LIMIT / OFFSET)
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$limit = (int)$limit;
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$limitsql = ' LIMIT ' . $limit;
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if (!is_null($offset)) {
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$offset = (int)$offset;
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$limitsql .= ' OFFSET ' . $offset;
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}
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//insert limitsql
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if (substr($query, -1) == ';') { //if query ends with ;
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$query = substr($query, 0, -1) . $limitsql . ';';
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} else {
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$query.=$limitsql;
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}
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} else {
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if (isset(self::$preparedQueries[$query]) and self::$cachingEnabled) {
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return self::$preparedQueries[$query];
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}
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}
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$rawQuery = $query;
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// Optimize the query
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$query = self::processQuery( $query );
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self::connect();
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// return the result
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if (self::$backend == self::BACKEND_DOCTRINE) {
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try {
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$result=self::$connection->prepare($query);
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} catch(\Doctrine\DBAL\DBALException $e) {
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throw new DatabaseException($e->getMessage(), $query);
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}
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$result=new DoctrineStatementWrapper($result);
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}
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if ((is_null($limit) || $limit == -1) and self::$cachingEnabled ) {
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$type = OC_Config::getValue( "dbtype", "sqlite" );
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if( $type != 'sqlite' && $type != 'sqlite3' ) {
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self::$preparedQueries[$rawQuery] = $result;
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}
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}
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return $result;
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}
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/**
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* @brief gets last value of autoincrement
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* @param string $table The optional table name (will replace *PREFIX*) and add sequence suffix
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* @return int id
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*
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* \Doctrine\DBAL\Connection lastInsertId
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*
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* Call this method right after the insert command or other functions may
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* cause trouble!
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*/
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public static function insertid($table=null) {
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self::connect();
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$type = OC_Config::getValue( "dbtype", "sqlite" );
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if( $type == 'pgsql' ) {
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$query = self::prepare('SELECT lastval() AS id');
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$row = $query->execute()->fetchRow();
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return $row['id'];
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}
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if( $type == 'mssql' ) {
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if($table !== null) {
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$prefix = OC_Config::getValue( "dbtableprefix", "oc_" );
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$table = str_replace( '*PREFIX*', $prefix, $table );
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}
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return self::$connection->lastInsertId($table);
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} else {
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if($table !== null) {
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$prefix = OC_Config::getValue( "dbtableprefix", "oc_" );
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$suffix = OC_Config::getValue( "dbsequencesuffix", "_id_seq" );
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$table = str_replace( '*PREFIX*', $prefix, $table ).$suffix;
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}
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return self::$connection->lastInsertId($table);
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}
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}
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/**
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* @brief Disconnect
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* @return bool
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*
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* This is good bye, good bye, yeah!
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*/
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public static function disconnect() {
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// Cut connection if required
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if(self::$connection) {
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self::$connection=false;
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self::$DOCTRINE=false;
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}
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return true;
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}
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/** else {
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* @brief saves database scheme to xml file
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* @param string $file name of file
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* @param int $mode
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* @return bool
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*
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* TODO: write more documentation
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*/
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public static function getDbStructure( $file, $mode=MDB2_SCHEMA_DUMP_STRUCTURE) {
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self::connectDoctrine();
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return OC_DB_Schema::getDbStructure(self::$connection, $file);
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}
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/**
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* @brief Creates tables from XML file
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* @param string $file file to read structure from
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* @return bool
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*
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* TODO: write more documentation
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*/
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public static function createDbFromStructure( $file ) {
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self::connectDoctrine();
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return OC_DB_Schema::createDbFromStructure(self::$connection, $file);
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/* FIXME: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
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* as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
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* [1] http://bugs.mysql.com/bug.php?id=27645
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* http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
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* http://www.postgresql.org/docs/8.1/static/functions-datetime.html
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* http://www.sqlite.org/lang_createtable.html
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* http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm
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*/
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if( $CONFIG_DBTYPE == 'pgsql' ) { //mysql support it too but sqlite doesn't
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$content = str_replace( '<default>0000-00-00 00:00:00</default>',
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'<default>CURRENT_TIMESTAMP</default>', $content );
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}
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}
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/**
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* @brief update the database scheme
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* @param string $file file to read structure from
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* @return bool
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*/
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public static function updateDbFromStructure($file) {
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self::connectDoctrine();
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try {
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$result = OC_DB_Schema::updateDbFromStructure(self::$connection, $file);
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} catch (Exception $e) {
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OC_Log::write('core', 'Failed to update database structure ('.$e.')', OC_Log::FATAL);
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throw $e;
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}
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return $result;
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/* FIXME: use CURRENT_TIMESTAMP for all databases. mysql supports it as a default for DATETIME since 5.6.5 [1]
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* as a fallback we could use <default>0000-01-01 00:00:00</default> everywhere
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* [1] http://bugs.mysql.com/bug.php?id=27645
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* http://dev.mysql.com/doc/refman/5.0/en/timestamp-initialization.html
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* http://www.postgresql.org/docs/8.1/static/functions-datetime.html
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* http://www.sqlite.org/lang_createtable.html
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* http://docs.oracle.com/cd/B19306_01/server.102/b14200/functions037.htm
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*/
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if( $CONFIG_DBTYPE == 'pgsql' ) { //mysql support it too but sqlite doesn't
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$content = str_replace( '<default>0000-00-00 00:00:00</default>',
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'<default>CURRENT_TIMESTAMP</default>', $content );
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}
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}
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/**
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* @brief Insert a row if a matching row doesn't exists.
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* @param string $table. The table to insert into in the form '*PREFIX*tableName'
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* @param array $input. An array of fieldname/value pairs
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* @returns The return value from DoctrineStatementWrapper->execute()
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*/
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public static function insertIfNotExist($table, $input) {
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self::connect();
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$prefix = OC_Config::getValue( "dbtableprefix", "oc_" );
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$table = str_replace( '*PREFIX*', $prefix, $table );
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if(is_null(self::$type)) {
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self::$type=OC_Config::getValue( "dbtype", "sqlite" );
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}
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$type = self::$type;
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$query = '';
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// differences in escaping of table names ('`' for mysql) and getting the current timestamp
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if( $type == 'sqlite' || $type == 'sqlite3' ) {
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// NOTE: For SQLite we have to use this clumsy approach
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// otherwise all fieldnames used must have a unique key.
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$query = 'SELECT * FROM "' . $table . '" WHERE ';
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foreach($input as $key => $value) {
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$query .= $key . " = '" . $value . '\' AND ';
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}
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$query = substr($query, 0, strlen($query) - 5);
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try {
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$stmt = self::prepare($query);
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$result = $stmt->execute();
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} catch(\Doctrine\DBAL\DBALException $e) {
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$entry = 'DB Error: "'.$e->getMessage() . '"<br />';
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$entry .= 'Offending command was: ' . $query . '<br />';
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OC_Log::write('core', $entry, OC_Log::FATAL);
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error_log('DB error: '.$entry);
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OC_Template::printErrorPage( $entry );
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}
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if($result->numRows() == 0) {
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$query = 'INSERT INTO "' . $table . '" ("'
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. implode('","', array_keys($input)) . '") VALUES("'
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. implode('","', array_values($input)) . '")';
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} else {
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return true;
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}
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} elseif( $type == 'pgsql' || $type == 'oci' || $type == 'mysql' || $type == 'mssql') {
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$query = 'INSERT INTO `' .$table . '` ('
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. implode(',', array_keys($input)) . ') SELECT \''
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. implode('\',\'', array_values($input)) . '\' FROM ' . $table . ' WHERE ';
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foreach($input as $key => $value) {
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$query .= $key . " = '" . $value . '\' AND ';
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}
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$query = substr($query, 0, strlen($query) - 5);
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$query .= ' HAVING COUNT(*) = 0';
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}
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// TODO: oci should be use " (quote) instead of ` (backtick).
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//OC_Log::write('core', __METHOD__ . ', type: ' . $type . ', query: ' . $query, OC_Log::DEBUG);
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try {
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$result = self::prepare($query);
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} catch(\Doctrine\DBAL\DBALException $e) {
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$entry = 'DB Error: "'.$e->getMessage() . '"<br />';
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$entry .= 'Offending command was: ' . $query.'<br />';
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OC_Log::write('core', $entry, OC_Log::FATAL);
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error_log('DB error: ' . $entry);
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OC_Template::printErrorPage( $entry );
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}
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return $result->execute();
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}
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/**
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* @brief does minor changes to query
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* @param string $query Query string
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* @return string corrected query string
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*
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* This function replaces *PREFIX* with the value of $CONFIG_DBTABLEPREFIX
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* and replaces the ` with ' or " according to the database driver.
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*/
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private static function processQuery( $query ) {
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self::connect();
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// We need Database type and table prefix
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if(is_null(self::$type)) {
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self::$type=OC_Config::getValue( "dbtype", "sqlite" );
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}
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$type = self::$type;
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if(is_null(self::$prefix)) {
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self::$prefix=OC_Config::getValue( "dbtableprefix", "oc_" );
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}
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$prefix = self::$prefix;
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// differences in escaping of table names ('`' for mysql) and getting the current timestamp
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if( $type == 'sqlite' || $type == 'sqlite3' ) {
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$query = str_replace( '`', '"', $query );
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$query = str_ireplace( 'NOW()', 'datetime(\'now\')', $query );
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$query = str_ireplace( 'UNIX_TIMESTAMP()', 'strftime(\'%s\',\'now\')', $query );
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} elseif( $type == 'pgsql' ) {
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$query = str_replace( '`', '"', $query );
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$query = str_ireplace( 'UNIX_TIMESTAMP()', 'cast(extract(epoch from current_timestamp) as integer)',
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$query );
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} elseif( $type == 'oci' ) {
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$query = str_replace( '`', '"', $query );
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$query = str_ireplace( 'NOW()', 'CURRENT_TIMESTAMP', $query );
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}elseif( $type == 'mssql' ) {
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$query = preg_replace( "/\`(.*?)`/", "[$1]", $query );
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$query = str_replace( 'NOW()', 'CURRENT_TIMESTAMP', $query );
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$query = str_replace( 'now()', 'CURRENT_TIMESTAMP', $query );
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$query = str_replace( 'LENGTH(', 'LEN(', $query );
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$query = str_replace( 'SUBSTR(', 'SUBSTRING(', $query );
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$query = self::fixLimitClauseForMSSQL($query);
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}
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// replace table name prefix
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$query = str_replace( '*PREFIX*', $prefix, $query );
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return $query;
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}
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private static function fixLimitClauseForMSSQL($query) {
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$limitLocation = stripos ($query, "LIMIT");
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if ( $limitLocation === false ) {
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return $query;
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}
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// total == 0 means all results - not zero results
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//
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|
// First number is either total or offset, locate it by first space
|
|
//
|
|
$offset = substr ($query, $limitLocation + 5);
|
|
$offset = substr ($offset, 0, stripos ($offset, ' '));
|
|
$offset = trim ($offset);
|
|
|
|
// check for another parameter
|
|
if (stripos ($offset, ',') === false) {
|
|
// no more parameters
|
|
$offset = 0;
|
|
$total = intval ($offset);
|
|
} else {
|
|
// found another parameter
|
|
$offset = intval ($offset);
|
|
|
|
$total = substr ($query, $limitLocation + 5);
|
|
$total = substr ($total, stripos ($total, ','));
|
|
|
|
$total = substr ($total, 0, stripos ($total, ' '));
|
|
$total = intval ($total);
|
|
}
|
|
|
|
$query = trim (substr ($query, 0, $limitLocation));
|
|
|
|
if ($offset == 0 && $total !== 0) {
|
|
if (strpos($query, "SELECT") === false) {
|
|
$query = "TOP {$total} " . $query;
|
|
} else {
|
|
$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP '.$total, $query);
|
|
}
|
|
} else if ($offset > 0) {
|
|
$query = preg_replace('/SELECT(\s*DISTINCT)?/Dsi', 'SELECT$1 TOP(10000000) ', $query);
|
|
$query = 'SELECT *
|
|
FROM (SELECT sub2.*, ROW_NUMBER() OVER(ORDER BY sub2.line2) AS line3
|
|
FROM (SELECT 1 AS line2, sub1.* FROM (' . $query . ') AS sub1) as sub2) AS sub3';
|
|
|
|
if ($total > 0) {
|
|
$query .= ' WHERE line3 BETWEEN ' . ($offset + 1) . ' AND ' . ($offset + $total);
|
|
} else {
|
|
$query .= ' WHERE line3 > ' . $offset;
|
|
}
|
|
}
|
|
return $query;
|
|
}
|
|
|
|
/**
|
|
* @brief drop a table
|
|
* @param string $tableName the table to drop
|
|
*/
|
|
public static function dropTable($tableName) {
|
|
self::connectDoctrine();
|
|
OC_DB_Schema::dropTable(self::$connection, $tableName);
|
|
}
|
|
|
|
/**
|
|
* remove all tables defined in a database structure xml file
|
|
* @param string $file the xml file describing the tables
|
|
*/
|
|
public static function removeDBStructure($file) {
|
|
self::connectDoctrine();
|
|
OC_DB_Schema::removeDBStructure(self::$connection, $file);
|
|
}
|
|
|
|
/**
|
|
* @brief replaces the owncloud tables with a new set
|
|
* @param $file string path to the MDB2 xml db export file
|
|
*/
|
|
public static function replaceDB( $file ) {
|
|
self::connectDoctrine();
|
|
OC_DB_Schema::replaceDB(self::$connection, $file);
|
|
}
|
|
|
|
/**
|
|
* Start a transaction
|
|
* @return bool
|
|
*/
|
|
public static function beginTransaction() {
|
|
self::connect();
|
|
self::$connection->beginTransaction();
|
|
self::$inTransaction=true;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Commit the database changes done during a transaction that is in progress
|
|
* @return bool
|
|
*/
|
|
public static function commit() {
|
|
self::connect();
|
|
if(!self::$inTransaction) {
|
|
return false;
|
|
}
|
|
self::$connection->commit();
|
|
self::$inTransaction=false;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* check if a result is an error, works with Doctrine
|
|
* @param mixed $result
|
|
* @return bool
|
|
*/
|
|
public static function isError($result) {
|
|
if(!$result) {
|
|
return true;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* returns the error code and message as a string for logging
|
|
* works with DoctrineException
|
|
* @param mixed $error
|
|
* @return string
|
|
*/
|
|
public static function getErrorMessage($error) {
|
|
if (self::$backend==self::BACKEND_DOCTRINE and self::$DOCTRINE) {
|
|
$msg = self::$DOCTRINE->errorCode() . ': ';
|
|
$errorInfo = self::$DOCTRINE->errorInfo();
|
|
if (is_array($errorInfo)) {
|
|
$msg .= 'SQLSTATE = '.$errorInfo[0] . ', ';
|
|
$msg .= 'Driver Code = '.$errorInfo[1] . ', ';
|
|
$msg .= 'Driver Message = '.$errorInfo[2];
|
|
} else {
|
|
$msg = '';
|
|
}
|
|
} else {
|
|
$msg = '';
|
|
}
|
|
return $msg;
|
|
}
|
|
|
|
/**
|
|
* @param bool $enabled
|
|
*/
|
|
static public function enableCaching($enabled) {
|
|
if (!$enabled) {
|
|
self::$preparedQueries = array();
|
|
}
|
|
self::$cachingEnabled = $enabled;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* small wrapper around \Doctrine\DBAL\Driver\Statement to make it behave, more like an MDB2 Statement
|
|
*/
|
|
class DoctrineStatementWrapper {
|
|
/**
|
|
* @var \Doctrine\DBAL\Driver\Statement
|
|
*/
|
|
private $statement=null;
|
|
private $lastArguments=array();
|
|
|
|
public function __construct($statement) {
|
|
$this->statement=$statement;
|
|
}
|
|
|
|
/**
|
|
* pass all other function directly to the \Doctrine\DBAL\Driver\Statement
|
|
*/
|
|
public function __call($name,$arguments) {
|
|
return call_user_func_array(array($this->statement,$name), $arguments);
|
|
}
|
|
|
|
/**
|
|
* provide numRows
|
|
*/
|
|
public function numRows() {
|
|
return $this->statement->rowCount();
|
|
}
|
|
|
|
/**
|
|
* make execute return the result instead of a bool
|
|
*/
|
|
public function execute($input=array()) {
|
|
$this->lastArguments = $input;
|
|
if (count($input) > 0) {
|
|
|
|
if (!isset($type)) {
|
|
$type = OC_Config::getValue( "dbtype", "sqlite" );
|
|
}
|
|
|
|
if ($type == 'mssql') {
|
|
$input = $this->tryFixSubstringLastArgumentDataForMSSQL($input);
|
|
}
|
|
|
|
$result=$this->statement->execute($input);
|
|
} else {
|
|
$result=$this->statement->execute();
|
|
}
|
|
|
|
if ($result) {
|
|
return $this;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
private function tryFixSubstringLastArgumentDataForMSSQL($input) {
|
|
$query = $this->statement->queryString;
|
|
$pos = stripos ($query, 'SUBSTRING');
|
|
|
|
if ( $pos === false) {
|
|
return;
|
|
}
|
|
|
|
try {
|
|
$newQuery = '';
|
|
|
|
$cArg = 0;
|
|
|
|
$inSubstring = false;
|
|
|
|
// Create new query
|
|
for ($i = 0; $i < strlen ($query); $i++) {
|
|
if ($inSubstring == false) {
|
|
// Defines when we should start inserting values
|
|
if (substr ($query, $i, 9) == 'SUBSTRING') {
|
|
$inSubstring = true;
|
|
}
|
|
} else {
|
|
// Defines when we should stop inserting values
|
|
if (substr ($query, $i, 1) == ')') {
|
|
$inSubstring = false;
|
|
}
|
|
}
|
|
|
|
if (substr ($query, $i, 1) == '?') {
|
|
// We found a question mark
|
|
if ($inSubstring) {
|
|
$newQuery .= $input[$cArg];
|
|
|
|
//
|
|
// Remove from input array
|
|
//
|
|
array_splice ($input, $cArg, 1);
|
|
} else {
|
|
$newQuery .= substr ($query, $i, 1);
|
|
$cArg++;
|
|
}
|
|
} else {
|
|
$newQuery .= substr ($query, $i, 1);
|
|
}
|
|
}
|
|
|
|
// The global data we need
|
|
$name = OC_Config::getValue( "dbname", "owncloud" );
|
|
$host = OC_Config::getValue( "dbhost", "" );
|
|
$user = OC_Config::getValue( "dbuser", "" );
|
|
$pass = OC_Config::getValue( "dbpassword", "" );
|
|
if (strpos($host,':')) {
|
|
list($host, $port) = explode(':', $host, 2);
|
|
} else {
|
|
$port = false;
|
|
}
|
|
$opts = array();
|
|
|
|
if ($port) {
|
|
$dsn = 'sqlsrv:Server='.$host.','.$port.';Database='.$name;
|
|
} else {
|
|
$dsn = 'sqlsrv:Server='.$host.';Database='.$name;
|
|
}
|
|
|
|
$PDO = new PDO($dsn, $user, $pass, $opts);
|
|
$PDO->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_ASSOC);
|
|
$PDO->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
|
|
|
|
$this->statement = $PDO->prepare($newQuery);
|
|
|
|
$this->lastArguments = $input;
|
|
|
|
return $input;
|
|
} catch (PDOException $e){
|
|
$entry = 'PDO DB Error: "'.$e->getMessage().'"<br />';
|
|
$entry .= 'Offending command was: '.$this->statement->queryString .'<br />';
|
|
$entry .= 'Input parameters: ' .print_r($input, true).'<br />';
|
|
$entry .= 'Stack trace: ' .$e->getTraceAsString().'<br />';
|
|
OC_Log::write('core', $entry, OC_Log::FATAL);
|
|
OC_User::setUserId(null);
|
|
|
|
// send http status 503
|
|
header('HTTP/1.1 503 Service Temporarily Unavailable');
|
|
header('Status: 503 Service Temporarily Unavailable');
|
|
OC_Template::printErrorPage('Failed to connect to database');
|
|
die ($entry);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* provide an alias for fetch
|
|
*/
|
|
public function fetchRow() {
|
|
return $this->statement->fetch();
|
|
}
|
|
|
|
/**
|
|
* Provide a simple fetchOne.
|
|
* fetch single column from the next row
|
|
* @param int $colnum the column number to fetch
|
|
*/
|
|
public function fetchOne($colnum = 0) {
|
|
return $this->statement->fetchColumn($colnum);
|
|
}
|
|
}
|