146 lines
4.3 KiB
PHP
146 lines
4.3 KiB
PHP
<?php
|
|
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Jakob Sack
|
|
* @copyright 2011 Jakob Sack kde@jakobsack.de
|
|
*
|
|
* 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.
|
|
*
|
|
* 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/>.
|
|
*
|
|
*/
|
|
|
|
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.
|
|
// NOTE: SQLite requires time() to be inserted directly. That's ugly
|
|
// but otherwise reading locks from SQLite Databases will return
|
|
// nothing
|
|
$query = 'SELECT * FROM `*PREFIX*locks` WHERE `userid` = ? AND (`created` + `timeout`) > '.time().' AND (( `uri` = ?)';
|
|
$params = array(OC_User::getUser(),$uri);
|
|
|
|
// We need to check locks for every part in the uri.
|
|
$uriParts = explode('/',$uri);
|
|
|
|
// We already covered the last part of the uri
|
|
array_pop($uriParts);
|
|
|
|
$currentPath='';
|
|
|
|
foreach($uriParts as $part) {
|
|
|
|
if ($currentPath) $currentPath.='/';
|
|
$currentPath.=$part;
|
|
|
|
$query.=' OR (`depth` != 0 AND `uri` = ?)';
|
|
$params[] = $currentPath;
|
|
|
|
}
|
|
|
|
if ($returnChildLocks) {
|
|
|
|
$query.=' OR (`uri` LIKE ?)';
|
|
$params[] = $uri . '/%';
|
|
|
|
}
|
|
$query.=')';
|
|
|
|
$stmt = OC_DB::prepare( $query );
|
|
$result = $stmt->execute( $params );
|
|
|
|
$lockList = array();
|
|
while( $row = $result->fetchRow()){
|
|
|
|
$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 $lockInfo
|
|
* @return bool
|
|
*/
|
|
public function lock($uri,Sabre_DAV_Locks_LockInfo $lockInfo) {
|
|
|
|
// We're making the lock timeout 5 minutes
|
|
$lockInfo->timeout = 300;
|
|
$lockInfo->created = time();
|
|
$lockInfo->uri = $uri;
|
|
|
|
$locks = $this->getLocks($uri,false);
|
|
$exists = false;
|
|
foreach($locks as $lock) {
|
|
if ($lock->token == $lockInfo->token) $exists = true;
|
|
}
|
|
|
|
if ($exists) {
|
|
$query = OC_DB::prepare( 'UPDATE `*PREFIX*locks` SET `owner` = ?, `timeout` = ?, `scope` = ?, `depth` = ?, `uri` = ?, `created` = ? WHERE `userid` = ? AND `token` = ?' );
|
|
$result = $query->execute( array($lockInfo->owner,$lockInfo->timeout,$lockInfo->scope,$lockInfo->depth,$uri,$lockInfo->created,OC_User::getUser(),$lockInfo->token));
|
|
} else {
|
|
$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*locks` (`userid`,`owner`,`timeout`,`scope`,`depth`,`uri`,`created`,`token`) VALUES (?,?,?,?,?,?,?,?)' );
|
|
$result = $query->execute( array(OC_User::getUser(),$lockInfo->owner,$lockInfo->timeout,$lockInfo->scope,$lockInfo->depth,$uri,$lockInfo->created,$lockInfo->token));
|
|
}
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
/**
|
|
* Removes a lock from a uri
|
|
*
|
|
* @param string $uri
|
|
* @param Sabre_DAV_Locks_LockInfo $lockInfo
|
|
* @return bool
|
|
*/
|
|
public function unlock($uri,Sabre_DAV_Locks_LockInfo $lockInfo) {
|
|
|
|
$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*locks` WHERE `userid` = ? AND `uri` = ? AND `token` = ?' );
|
|
$result = $query->execute( array(OC_User::getUser(),$uri,$lockInfo->token));
|
|
|
|
return $result->numRows() === 1;
|
|
|
|
}
|
|
|
|
}
|