2011-04-16 12:17:40 +04:00
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<?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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2012-05-26 21:14:24 +04:00
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* @copyright 2012 Frank Karlitschek frank@owncloud.org
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2011-04-16 12:17:40 +04:00
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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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2012-10-10 22:49:47 +04:00
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define('MDB2_SCHEMA_DUMP_STRUCTURE', '1');
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2013-02-23 15:12:51 +04:00
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2013-02-23 16:43:05 +04:00
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class DatabaseException extends Exception {
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2012-12-07 19:09:29 +04:00
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private $query;
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2013-06-10 14:56:45 +04:00
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//FIXME getQuery seems to be unused, maybe use parent constructor with $message, $code and $previous
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public function __construct($message, $query = null){
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2012-12-07 19:09:29 +04:00
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parent::__construct($message);
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$this->query = $query;
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}
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2013-02-23 16:43:05 +04:00
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public function getQuery() {
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2012-12-07 19:09:29 +04:00
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return $this->query;
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}
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}
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2011-04-16 12:17:40 +04:00
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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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2012-11-01 21:11:50 +04:00
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* Doctrine with some adaptions.
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2011-04-16 12:17:40 +04:00
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*/
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class OC_DB {
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2012-09-23 03:52:34 +04:00
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/**
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2013-08-02 21:53:04 +04:00
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* @var \OC\DB\Connection $connection
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2012-09-23 03:52:34 +04:00
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*/
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2013-11-22 18:53:56 +04:00
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static private $connection; //the preferred connection to use, only Doctrine
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2012-11-01 21:11:50 +04:00
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2011-04-16 12:17:40 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* connects to the database
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2014-02-06 19:30:58 +04:00
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* @return boolean|null true if connection can be established or false on error
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2011-04-16 12:17:40 +04:00
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*
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* Connects to the database as specified in config.php
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*/
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2013-02-26 02:45:07 +04:00
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public static function connect() {
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2012-09-05 16:49:42 +04:00
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if(self::$connection) {
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2012-09-23 03:52:34 +04:00
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return true;
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2011-10-16 22:47:25 +04:00
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}
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2011-09-17 04:30:58 +04:00
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2011-04-16 12:17:40 +04:00
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// The global data we need
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2011-09-17 04:30:58 +04:00
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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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$type = OC_Config::getValue( "dbtype", "sqlite" );
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2012-09-05 16:49:42 +04:00
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if(strpos($host, ':')) {
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2014-06-12 08:47:45 +04:00
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list($host, $socket)=explode(':', $host, 2);
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$port = ctype_digit($socket) && $socket<=65535;
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2012-12-07 14:35:24 +04:00
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} else {
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2014-06-12 08:47:45 +04:00
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$socket=FALSE;
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2012-05-17 03:06:22 +04:00
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}
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2011-04-16 12:17:40 +04:00
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2014-03-31 22:00:44 +04:00
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$factory = new \OC\DB\ConnectionFactory();
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if (!$factory->isValidType($type)) {
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return false;
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}
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if ($factory->normalizeType($type) === 'sqlite3') {
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$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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);
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} else {
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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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'dbname' => $name,
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);
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2014-06-12 08:47:45 +04:00
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if ($socket) {
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if ($port) {
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$connectionParams['port'] = $socket;
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2014-06-05 09:50:23 +04:00
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} else {
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2014-06-12 08:47:45 +04:00
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$connectionParams['unix_socket'] = $socket;
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2014-06-05 09:50:23 +04:00
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}
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2011-04-16 12:17:40 +04:00
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}
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}
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2014-03-31 22:00:44 +04:00
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$connectionParams['tablePrefix'] = OC_Config::getValue('dbtableprefix', 'oc_');
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try {
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self::$connection = $factory->getConnection($type, $connectionParams);
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} catch(\Doctrine\DBAL\DBALException $e) {
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OC_Log::write('core', $e->getMessage(), OC_Log::FATAL);
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OC_User::setUserId(null);
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// send http status 503
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header('HTTP/1.1 503 Service Temporarily Unavailable');
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header('Status: 503 Service Temporarily Unavailable');
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OC_Template::printErrorPage('Failed to connect to database');
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die();
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}
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2011-04-16 12:17:40 +04:00
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return true;
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}
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2013-08-02 21:53:04 +04:00
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/**
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* @return \OC\DB\Connection
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*/
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2013-03-02 20:17:11 +04:00
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static public function getConnection() {
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self::connect();
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return self::$connection;
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}
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2013-08-02 18:02:33 +04:00
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/**
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* get MDB2 schema manager
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*
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* @return \OC\DB\MDB2SchemaManager
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*/
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private static function getMDB2SchemaManager()
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{
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return new \OC\DB\MDB2SchemaManager(self::getConnection());
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}
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2011-04-16 12:17:40 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* Prepare a SQL query
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2012-09-23 03:52:34 +04:00
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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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2013-06-27 15:13:49 +04:00
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* @param bool $isManipulation
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2013-03-19 21:52:54 +04:00
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* @throws DatabaseException
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2014-02-06 19:30:58 +04:00
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* @return OC_DB_StatementWrapper prepared SQL query
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2011-04-16 12:17:40 +04:00
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*
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2012-11-01 21:11:50 +04:00
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* SQL query via Doctrine prepare(), needs to be execute()'d!
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2011-04-16 12:17:40 +04:00
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*/
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2013-06-20 16:46:22 +04:00
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static public function prepare( $query , $limit = null, $offset = null, $isManipulation = null) {
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2011-04-16 12:17:40 +04:00
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self::connect();
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2014-03-31 22:00:44 +04:00
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2013-06-20 16:46:22 +04:00
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if ($isManipulation === null) {
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//try to guess, so we return the number of rows on manipulations
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$isManipulation = self::isManipulation($query);
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}
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2014-03-31 22:00:44 +04:00
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2011-04-16 12:17:40 +04:00
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// return the result
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2013-02-26 02:45:07 +04:00
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try {
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2013-08-08 00:22:33 +04:00
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$result = self::$connection->prepare($query, $limit, $offset);
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} catch (\Doctrine\DBAL\DBALException $e) {
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2013-02-26 02:45:07 +04:00
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throw new \DatabaseException($e->getMessage(), $query);
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2011-04-16 12:17:40 +04:00
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}
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2013-02-26 02:45:07 +04:00
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// differentiate between query and manipulation
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2013-08-08 00:22:33 +04:00
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$result = new OC_DB_StatementWrapper($result, $isManipulation);
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2011-04-16 12:17:40 +04:00
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return $result;
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}
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2013-02-26 02:45:07 +04:00
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2013-06-20 16:46:22 +04:00
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/**
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* tries to guess the type of statement based on the first 10 characters
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* the current check allows some whitespace but does not work with IF EXISTS or other more complex statements
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2014-03-31 22:00:44 +04:00
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*
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2013-06-20 16:46:22 +04:00
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* @param string $sql
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2013-08-06 17:43:58 +04:00
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* @return bool
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2013-06-20 16:46:22 +04:00
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*/
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static public function isManipulation( $sql ) {
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2013-08-08 00:22:33 +04:00
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$selectOccurrence = stripos($sql, 'SELECT');
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2013-08-06 17:43:58 +04:00
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if ($selectOccurrence !== false && $selectOccurrence < 10) {
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2013-06-20 16:46:22 +04:00
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return false;
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}
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2013-08-08 00:22:33 +04:00
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$insertOccurrence = stripos($sql, 'INSERT');
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2013-08-06 17:43:58 +04:00
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if ($insertOccurrence !== false && $insertOccurrence < 10) {
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2013-06-20 16:46:22 +04:00
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return true;
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}
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2013-08-08 00:22:33 +04:00
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$updateOccurrence = stripos($sql, 'UPDATE');
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2013-08-06 17:43:58 +04:00
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if ($updateOccurrence !== false && $updateOccurrence < 10) {
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2013-06-20 16:46:22 +04:00
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return true;
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}
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2013-08-08 00:22:33 +04:00
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$deleteOccurrence = stripos($sql, 'DELETE');
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2013-08-06 17:43:58 +04:00
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if ($deleteOccurrence !== false && $deleteOccurrence < 10) {
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2013-06-20 16:46:22 +04:00
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return true;
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}
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return false;
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}
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2014-03-31 22:00:44 +04:00
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2013-06-10 14:56:45 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* execute a prepared statement, on error write log and throw exception
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2013-06-28 13:48:38 +04:00
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* @param mixed $stmt OC_DB_StatementWrapper,
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2013-06-10 14:56:45 +04:00
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* an array with 'sql' and optionally 'limit' and 'offset' keys
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* .. or a simple sql query string
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* @param array $parameters
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2014-02-19 12:31:54 +04:00
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* @return OC_DB_StatementWrapper
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2013-06-10 14:56:45 +04:00
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* @throws DatabaseException
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*/
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static public function executeAudited( $stmt, array $parameters = null) {
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if (is_string($stmt)) {
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// convert to an array with 'sql'
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2013-08-07 20:16:34 +04:00
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if (stripos($stmt, 'LIMIT') !== false) { //OFFSET requires LIMIT, so we only need to check for LIMIT
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2013-06-10 14:56:45 +04:00
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// TODO try to convert LIMIT OFFSET notation to parameters, see fixLimitClauseForMSSQL
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$message = 'LIMIT and OFFSET are forbidden for portability reasons,'
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. ' pass an array with \'limit\' and \'offset\' instead';
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throw new DatabaseException($message);
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}
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$stmt = array('sql' => $stmt, 'limit' => null, 'offset' => null);
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}
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2013-08-07 20:16:34 +04:00
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if (is_array($stmt)) {
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2013-06-10 14:56:45 +04:00
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// convert to prepared statement
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if ( ! array_key_exists('sql', $stmt) ) {
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$message = 'statement array must at least contain key \'sql\'';
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throw new DatabaseException($message);
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}
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if ( ! array_key_exists('limit', $stmt) ) {
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$stmt['limit'] = null;
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}
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if ( ! array_key_exists('limit', $stmt) ) {
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$stmt['offset'] = null;
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}
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$stmt = self::prepare($stmt['sql'], $stmt['limit'], $stmt['offset']);
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}
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self::raiseExceptionOnError($stmt, 'Could not prepare statement');
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2013-06-28 13:48:38 +04:00
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if ($stmt instanceof OC_DB_StatementWrapper) {
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2013-06-10 14:56:45 +04:00
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$result = $stmt->execute($parameters);
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self::raiseExceptionOnError($result, 'Could not execute statement');
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} else {
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if (is_object($stmt)) {
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$message = 'Expected a prepared statement or array got ' . get_class($stmt);
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} else {
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$message = 'Expected a prepared statement or array got ' . gettype($stmt);
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}
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throw new DatabaseException($message);
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}
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return $result;
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}
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2011-04-16 12:17:40 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* gets last value of autoincrement
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2012-09-23 03:52:34 +04:00
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* @param string $table The optional table name (will replace *PREFIX*) and add sequence suffix
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2014-02-06 19:30:58 +04:00
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* @return string id
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2013-06-10 14:56:45 +04:00
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* @throws DatabaseException
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2011-04-16 12:17:40 +04:00
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*
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2012-11-01 21:11:50 +04:00
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* \Doctrine\DBAL\Connection lastInsertId
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2011-04-16 12:17:40 +04:00
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*
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* Call this method right after the insert command or other functions may
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* cause trouble!
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*/
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2012-09-07 17:22:01 +04:00
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public static function insertid($table=null) {
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2011-04-16 12:17:40 +04:00
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self::connect();
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2013-03-22 21:36:40 +04:00
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return self::$connection->lastInsertId($table);
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2011-04-16 12:17:40 +04:00
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}
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2013-02-26 20:39:13 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* Insert a row if a matching row doesn't exists.
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2014-02-28 16:53:41 +04:00
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* @param string $table The table to insert into in the form '*PREFIX*tableName'
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* @param array $input An array of fieldname/value pairs
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2014-02-06 19:30:58 +04:00
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* @return boolean number of updated rows
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2013-02-26 20:39:13 +04:00
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*/
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public static function insertIfNotExist($table, $input) {
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self::connect();
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return self::$connection->insertIfNotExist($table, $input);
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}
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/**
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* Start a transaction
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*/
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public static function beginTransaction() {
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self::connect();
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self::$connection->beginTransaction();
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}
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/**
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* Commit the database changes done during a transaction that is in progress
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*/
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public static function commit() {
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self::connect();
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self::$connection->commit();
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}
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2013-08-06 17:43:58 +04:00
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/**
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2014-05-19 19:50:53 +04:00
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* saves database schema to xml file
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2012-09-23 03:52:34 +04:00
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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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2011-04-16 12:17:40 +04:00
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*
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* TODO: write more documentation
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*/
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2013-08-06 17:43:58 +04:00
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public static function getDbStructure( $file, $mode = 0) {
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2013-08-02 18:02:33 +04:00
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|
$schemaManager = self::getMDB2SchemaManager();
|
|
|
|
return $schemaManager->getDbStructure($file);
|
2011-04-16 12:17:40 +04:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2014-05-19 19:50:53 +04:00
|
|
|
* Creates tables from XML file
|
2012-09-23 03:52:34 +04:00
|
|
|
* @param string $file file to read structure from
|
|
|
|
* @return bool
|
2011-04-16 12:17:40 +04:00
|
|
|
*
|
|
|
|
* TODO: write more documentation
|
|
|
|
*/
|
2012-09-07 17:22:01 +04:00
|
|
|
public static function createDbFromStructure( $file ) {
|
2013-08-02 18:02:33 +04:00
|
|
|
$schemaManager = self::getMDB2SchemaManager();
|
|
|
|
$result = $schemaManager->createDbFromStructure($file);
|
2013-02-25 01:12:02 +04:00
|
|
|
return $result;
|
2011-04-16 12:17:40 +04:00
|
|
|
}
|
2012-08-29 10:38:33 +04:00
|
|
|
|
2011-10-23 17:25:38 +04:00
|
|
|
/**
|
2014-05-19 19:50:53 +04:00
|
|
|
* update the database schema
|
2012-09-23 03:52:34 +04:00
|
|
|
* @param string $file file to read structure from
|
2013-03-19 21:52:54 +04:00
|
|
|
* @throws Exception
|
2014-02-06 19:30:58 +04:00
|
|
|
* @return string|boolean
|
2011-10-23 17:25:38 +04:00
|
|
|
*/
|
2012-09-07 17:22:01 +04:00
|
|
|
public static function updateDbFromStructure($file) {
|
2013-08-02 18:02:33 +04:00
|
|
|
$schemaManager = self::getMDB2SchemaManager();
|
2012-10-10 22:49:47 +04:00
|
|
|
try {
|
2013-08-02 18:02:33 +04:00
|
|
|
$result = $schemaManager->updateDbFromStructure($file);
|
2012-10-10 22:49:47 +04:00
|
|
|
} catch (Exception $e) {
|
|
|
|
OC_Log::write('core', 'Failed to update database structure ('.$e.')', OC_Log::FATAL);
|
2013-02-23 15:12:51 +04:00
|
|
|
throw $e;
|
2011-04-16 12:17:40 +04:00
|
|
|
}
|
2012-10-10 22:49:47 +04:00
|
|
|
return $result;
|
2011-04-16 12:17:40 +04:00
|
|
|
}
|
|
|
|
|
2011-06-12 19:51:31 +04:00
|
|
|
/**
|
2014-05-12 15:54:20 +04:00
|
|
|
* drop a table - the database prefix will be prepended
|
2012-09-23 03:52:34 +04:00
|
|
|
* @param string $tableName the table to drop
|
2011-06-12 19:51:31 +04:00
|
|
|
*/
|
2012-09-07 17:22:01 +04:00
|
|
|
public static function dropTable($tableName) {
|
2014-05-12 15:54:20 +04:00
|
|
|
|
|
|
|
$tableName = OC_Config::getValue('dbtableprefix', 'oc_' ) . trim($tableName);
|
|
|
|
|
|
|
|
self::$connection->beginTransaction();
|
|
|
|
|
|
|
|
$platform = self::$connection->getDatabasePlatform();
|
|
|
|
$sql = $platform->getDropTableSQL($platform->quoteIdentifier($tableName));
|
|
|
|
|
|
|
|
self::$connection->query($sql);
|
|
|
|
|
|
|
|
self::$connection->commit();
|
2011-06-12 19:51:31 +04:00
|
|
|
}
|
2012-08-29 10:38:33 +04:00
|
|
|
|
2011-06-12 19:51:31 +04:00
|
|
|
/**
|
|
|
|
* remove all tables defined in a database structure xml file
|
|
|
|
* @param string $file the xml file describing the tables
|
|
|
|
*/
|
2012-09-07 17:22:01 +04:00
|
|
|
public static function removeDBStructure($file) {
|
2013-08-02 18:02:33 +04:00
|
|
|
$schemaManager = self::getMDB2SchemaManager();
|
|
|
|
$schemaManager->removeDBStructure($file);
|
2011-06-12 19:51:31 +04:00
|
|
|
}
|
2012-08-29 10:38:33 +04:00
|
|
|
|
2012-03-01 23:41:14 +04:00
|
|
|
/**
|
2012-11-01 21:11:50 +04:00
|
|
|
* check if a result is an error, works with Doctrine
|
2012-03-01 23:41:14 +04:00
|
|
|
* @param mixed $result
|
|
|
|
* @return bool
|
|
|
|
*/
|
2012-09-07 17:22:01 +04:00
|
|
|
public static function isError($result) {
|
2013-07-11 20:47:19 +04:00
|
|
|
//Doctrine returns false on error (and throws an exception)
|
|
|
|
return $result === false;
|
2012-03-01 23:41:14 +04:00
|
|
|
}
|
2013-06-10 14:56:45 +04:00
|
|
|
/**
|
2013-06-24 10:27:25 +04:00
|
|
|
* check if a result is an error and throws an exception, works with \Doctrine\DBAL\DBALException
|
2013-06-10 14:56:45 +04:00
|
|
|
* @param mixed $result
|
2013-06-27 18:48:09 +04:00
|
|
|
* @param string $message
|
2013-06-10 14:56:45 +04:00
|
|
|
* @return void
|
|
|
|
* @throws DatabaseException
|
|
|
|
*/
|
|
|
|
public static function raiseExceptionOnError($result, $message = null) {
|
|
|
|
if(self::isError($result)) {
|
|
|
|
if ($message === null) {
|
|
|
|
$message = self::getErrorMessage($result);
|
|
|
|
} else {
|
|
|
|
$message .= ', Root cause:' . self::getErrorMessage($result);
|
|
|
|
}
|
2013-06-12 17:48:22 +04:00
|
|
|
throw new DatabaseException($message, self::getErrorCode($result));
|
2013-06-10 14:56:45 +04:00
|
|
|
}
|
|
|
|
}
|
2012-10-14 23:04:08 +04:00
|
|
|
|
2013-06-10 14:56:45 +04:00
|
|
|
public static function getErrorCode($error) {
|
2013-06-24 10:27:25 +04:00
|
|
|
$code = self::$connection->errorCode();
|
2013-06-10 14:56:45 +04:00
|
|
|
return $code;
|
|
|
|
}
|
2012-09-12 14:45:20 +04:00
|
|
|
/**
|
|
|
|
* returns the error code and message as a string for logging
|
2012-11-01 21:11:50 +04:00
|
|
|
* works with DoctrineException
|
2012-09-12 14:45:20 +04:00
|
|
|
* @param mixed $error
|
|
|
|
* @return string
|
|
|
|
*/
|
|
|
|
public static function getErrorMessage($error) {
|
2013-02-26 02:45:07 +04:00
|
|
|
if (self::$connection) {
|
2013-07-01 20:20:27 +04:00
|
|
|
return self::$connection->getError();
|
2012-09-12 14:45:20 +04:00
|
|
|
}
|
2013-06-27 18:48:09 +04:00
|
|
|
return '';
|
2012-09-12 14:45:20 +04:00
|
|
|
}
|
2013-02-27 01:41:48 +04:00
|
|
|
|
|
|
|
/**
|
|
|
|
* @param bool $enabled
|
|
|
|
*/
|
|
|
|
static public function enableCaching($enabled) {
|
2013-02-26 00:35:11 +04:00
|
|
|
if ($enabled) {
|
|
|
|
self::$connection->enableQueryStatementCaching();
|
|
|
|
} else {
|
|
|
|
self::$connection->disableQueryStatementCaching();
|
2013-02-27 01:41:48 +04:00
|
|
|
}
|
|
|
|
}
|
2014-05-12 15:54:20 +04:00
|
|
|
|
|
|
|
/**
|
|
|
|
* Checks if a table exists in the database - the database prefix will be prepended
|
|
|
|
*
|
|
|
|
* @param string $table
|
|
|
|
* @return bool
|
|
|
|
* @throws DatabaseException
|
|
|
|
*/
|
|
|
|
public static function tableExists($table) {
|
|
|
|
|
|
|
|
$table = OC_Config::getValue('dbtableprefix', 'oc_' ) . trim($table);
|
|
|
|
|
|
|
|
$dbType = OC_Config::getValue( 'dbtype', 'sqlite' );
|
|
|
|
switch ($dbType) {
|
|
|
|
case 'sqlite':
|
|
|
|
case 'sqlite3':
|
|
|
|
$sql = "SELECT name FROM sqlite_master "
|
|
|
|
. "WHERE type = 'table' AND name = ? "
|
|
|
|
. "UNION ALL SELECT name FROM sqlite_temp_master "
|
|
|
|
. "WHERE type = 'table' AND name = ?";
|
|
|
|
$result = \OC_DB::executeAudited($sql, array($table, $table));
|
|
|
|
break;
|
|
|
|
case 'mysql':
|
|
|
|
$sql = 'SHOW TABLES LIKE ?';
|
|
|
|
$result = \OC_DB::executeAudited($sql, array($table));
|
|
|
|
break;
|
|
|
|
case 'pgsql':
|
|
|
|
$sql = 'SELECT tablename AS table_name, schemaname AS schema_name '
|
|
|
|
. 'FROM pg_tables WHERE schemaname NOT LIKE \'pg_%\' '
|
|
|
|
. 'AND schemaname != \'information_schema\' '
|
|
|
|
. 'AND tablename = ?';
|
|
|
|
$result = \OC_DB::executeAudited($sql, array($table));
|
|
|
|
break;
|
|
|
|
case 'oci':
|
|
|
|
$sql = 'SELECT TABLE_NAME FROM USER_TABLES WHERE TABLE_NAME = ?';
|
|
|
|
$result = \OC_DB::executeAudited($sql, array($table));
|
|
|
|
break;
|
|
|
|
case 'mssql':
|
|
|
|
$sql = 'SELECT TABLE_NAME FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = ?';
|
|
|
|
$result = \OC_DB::executeAudited($sql, array($table));
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
throw new DatabaseException("Unknown database type: $dbType");
|
|
|
|
}
|
|
|
|
|
|
|
|
return $result->fetchOne() === $table;
|
|
|
|
}
|
2011-09-17 04:30:58 +04:00
|
|
|
}
|