nextcloud/lib/connector/sabre/locks.php

186 lines
5.0 KiB
PHP
Raw Normal View History

2011-07-22 16:38:42 +04:00
<?php
2012-05-05 20:13:40 +04:00
2011-07-22 16:38:42 +04:00
/**
2012-05-05 20:13:40 +04:00
* ownCloud
2011-07-22 16:38:42 +04:00
*
2012-05-05 20:13:40 +04:00
* @author Jakob Sack
* @copyright 2011 Jakob Sack kde@jakobsack.de
2011-07-22 18:21:29 +04:00
*
2012-05-05 20:13:40 +04:00
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
2011-07-22 18:21:29 +04:00
*
2012-05-05 20:13:40 +04:00
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
2011-07-22 18:21:29 +04:00
*
*/
2012-05-05 20:13:40 +04:00
2011-07-22 16:38:42 +04:00
class OC_Connector_Sabre_Locks extends Sabre_DAV_Locks_Backend_Abstract {
/**
* Returns a list of Sabre_DAV_Locks_LockInfo objects
*
* This method should return all the locks for a particular uri, including
* locks that might be set on a parent uri.
*
* If returnChildLocks is set to true, this method should also look for
* any locks in the subtree of the uri for locks.
*
* @param string $uri
* @param bool $returnChildLocks
* @return array
*/
public function getLocks($uri, $returnChildLocks) {
// NOTE: the following 10 lines or so could be easily replaced by
// pure sql. MySQL's non-standard string concatination prevents us
// from doing this though.
2012-08-01 01:31:25 +04:00
// NOTE: SQLite requires time() to be inserted directly. That's ugly
2012-08-29 10:38:33 +04:00
// but otherwise reading locks from SQLite Databases will return
2012-08-01 01:31:25 +04:00
// nothing
2013-02-11 20:44:02 +04:00
$query = 'SELECT * FROM `*PREFIX*locks`'
.' WHERE `userid` = ? AND (`created` + `timeout`) > '.time().' AND (( `uri` = ?)';
if (OC_Config::getValue( "dbtype") === 'oci') {
//FIXME oracle hack: need to explicitly cast CLOB to CHAR for comparison
$query = 'SELECT * FROM `*PREFIX*locks`'
.' WHERE `userid` = ? AND (`created` + `timeout`) > '.time().' AND (( to_char(`uri`) = ?)';
}
2012-11-02 22:53:02 +04:00
$params = array(OC_User::getUser(), $uri);
2011-07-22 16:38:42 +04:00
// We need to check locks for every part in the uri.
2012-11-02 22:53:02 +04:00
$uriParts = explode('/', $uri);
2011-07-22 16:38:42 +04:00
// We already covered the last part of the uri
array_pop($uriParts);
$currentPath='';
foreach($uriParts as $part) {
if ($currentPath) $currentPath.='/';
$currentPath.=$part;
//FIXME oracle hack: need to explicitly cast CLOB to CHAR for comparison
if (OC_Config::getValue( "dbtype") === 'oci') {
$query.=' OR (`depth` != 0 AND to_char(`uri`) = ?)';
} else {
$query.=' OR (`depth` != 0 AND `uri` = ?)';
}
2011-07-22 16:38:42 +04:00
$params[] = $currentPath;
}
if ($returnChildLocks) {
//FIXME oracle hack: need to explicitly cast CLOB to CHAR for comparison
if (OC_Config::getValue( "dbtype") === 'oci') {
$query.=' OR (to_char(`uri`) LIKE ?)';
} else {
$query.=' OR (`uri` LIKE ?)';
}
2011-07-22 16:38:42 +04:00
$params[] = $uri . '/%';
}
$query.=')';
2013-06-14 14:23:44 +04:00
$result = OC_DB::executeAudited( $query, $params );
2011-07-22 16:38:42 +04:00
$lockList = array();
2012-09-07 17:22:01 +04:00
while( $row = $result->fetchRow()) {
2011-07-22 16:38:42 +04:00
$lockInfo = new Sabre_DAV_Locks_LockInfo();
$lockInfo->owner = $row['owner'];
$lockInfo->token = $row['token'];
$lockInfo->timeout = $row['timeout'];
$lockInfo->created = $row['created'];
$lockInfo->scope = $row['scope'];
$lockInfo->depth = $row['depth'];
$lockInfo->uri = $row['uri'];
$lockList[] = $lockInfo;
}
return $lockList;
}
/**
* Locks a uri
*
* @param string $uri
* @param Sabre_DAV_Locks_LockInfo $lockInfo
* @return bool
*/
2012-11-04 14:10:46 +04:00
public function lock($uri, Sabre_DAV_Locks_LockInfo $lockInfo) {
2011-07-22 16:38:42 +04:00
// We're making the lock timeout 5 minutes
$lockInfo->timeout = 300;
$lockInfo->created = time();
$lockInfo->uri = $uri;
2012-10-24 00:53:54 +04:00
$locks = $this->getLocks($uri, false);
2011-07-22 16:38:42 +04:00
$exists = false;
2012-07-21 02:20:04 +04:00
foreach($locks as $lock) {
2013-06-14 15:54:41 +04:00
if ($lock->token == $lockInfo->token) {
$exists = true;
break;
}
2011-07-22 16:38:42 +04:00
}
2012-08-29 10:38:33 +04:00
2011-07-22 16:38:42 +04:00
if ($exists) {
2013-06-14 14:23:44 +04:00
$sql = 'UPDATE `*PREFIX*locks`'
.' SET `owner` = ?, `timeout` = ?, `scope` = ?, `depth` = ?, `uri` = ?, `created` = ?'
.' WHERE `userid` = ? AND `token` = ?';
$result = OC_DB::executeAudited( $sql, array(
2013-02-11 20:44:02 +04:00
$lockInfo->owner,
$lockInfo->timeout,
$lockInfo->scope,
$lockInfo->depth,
$uri,
$lockInfo->created,
OC_User::getUser(),
$lockInfo->token)
);
2011-07-22 16:38:42 +04:00
} else {
2013-06-14 14:23:44 +04:00
$sql = 'INSERT INTO `*PREFIX*locks`'
.' (`userid`,`owner`,`timeout`,`scope`,`depth`,`uri`,`created`,`token`)'
.' VALUES (?,?,?,?,?,?,?,?)';
$result = OC_DB::executeAudited( $sql, array(
2013-02-11 20:44:02 +04:00
OC_User::getUser(),
$lockInfo->owner,
$lockInfo->timeout,
$lockInfo->scope,
$lockInfo->depth,
$uri,
$lockInfo->created,
$lockInfo->token)
);
2011-07-22 16:38:42 +04:00
}
return true;
}
/**
* Removes a lock from a uri
*
* @param string $uri
* @param Sabre_DAV_Locks_LockInfo $lockInfo
* @return bool
*/
2012-11-04 14:10:46 +04:00
public function unlock($uri, Sabre_DAV_Locks_LockInfo $lockInfo) {
2011-07-22 16:38:42 +04:00
2013-06-14 14:23:44 +04:00
$sql = 'DELETE FROM `*PREFIX*locks` WHERE `userid` = ? AND `uri` = ? AND `token` = ?';
$result = OC_DB::executeAudited( $sql, array(OC_User::getUser(), $uri, $lockInfo->token));
2011-07-22 16:38:42 +04:00
return $result->numRows() === 1;
}
}