262 lines
7.5 KiB
PHP
262 lines
7.5 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Jakob Sack
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* @copyright 2011 Jakob Sack kde@jakobsack.de
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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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abstract class OC_Connector_Sabre_Node implements Sabre_DAV_INode, Sabre_DAV_IProperties {
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const GETETAG_PROPERTYNAME = '{DAV:}getetag';
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const LASTMODIFIED_PROPERTYNAME = '{DAV:}lastmodified';
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/**
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* Allow configuring the method used to generate Etags
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*
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* @var array(class_name, function_name)
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*/
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public static $ETagFunction = null;
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/**
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* The path to the current node
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*
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* @var string
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*/
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protected $path;
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/**
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* node fileinfo cache
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* @var array
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*/
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protected $fileinfo_cache;
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/**
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* node properties cache
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* @var array
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*/
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protected $property_cache = null;
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/**
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* @brief Sets up the node, expects a full path name
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* @param string $path
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* @return void
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*/
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public function __construct($path) {
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$this->path = $path;
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}
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/**
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* @brief Returns the name of the node
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* @return string
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*/
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public function getName() {
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list(, $name) = Sabre_DAV_URLUtil::splitPath($this->path);
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return $name;
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}
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/**
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* @brief Renames the node
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* @param string $name The new name
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* @return void
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*/
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public function setName($name) {
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list($parentPath, ) = Sabre_DAV_URLUtil::splitPath($this->path);
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list(, $newName) = Sabre_DAV_URLUtil::splitPath($name);
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$newPath = $parentPath . '/' . $newName;
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$oldPath = $this->path;
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OC_Filesystem::rename($this->path, $newPath);
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$this->path = $newPath;
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$query = OC_DB::prepare( 'UPDATE `*PREFIX*properties` SET `propertypath` = ? WHERE `userid` = ? AND `propertypath` = ?' );
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$query->execute( array( $newPath, OC_User::getUser(), $oldPath ));
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}
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public function setFileinfoCache($fileinfo_cache)
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{
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$this->fileinfo_cache = $fileinfo_cache;
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}
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/**
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* @brief Ensure that the fileinfo cache is filled
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& @note Uses OC_FileCache or a direct stat
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*/
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protected function getFileinfoCache() {
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if (!isset($this->fileinfo_cache)) {
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if ($fileinfo_cache = OC_FileCache::get($this->path)) {
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} else {
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$fileinfo_cache = OC_Filesystem::stat($this->path);
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}
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$this->fileinfo_cache = $fileinfo_cache;
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}
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}
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public function setPropertyCache($property_cache)
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{
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$this->property_cache = $property_cache;
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}
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/**
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* @brief Returns the last modification time, as a unix timestamp
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* @return int
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*/
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public function getLastModified() {
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$this->getFileinfoCache();
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return $this->fileinfo_cache['mtime'];
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}
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/**
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* sets the last modification time of the file (mtime) to the value given
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* in the second parameter or to now if the second param is empty.
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* Even if the modification time is set to a custom value the access time is set to now.
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*/
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public function touch($mtime) {
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OC_Filesystem::touch($this->path, $mtime);
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}
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/**
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* @brief Updates properties on this node,
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* @param array $mutations
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* @see Sabre_DAV_IProperties::updateProperties
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* @return bool|array
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*/
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public function updateProperties($properties) {
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$existing = $this->getProperties(array());
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foreach($properties as $propertyName => $propertyValue) {
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// If it was null, we need to delete the property
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if (is_null($propertyValue)) {
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if(array_key_exists( $propertyName, $existing )) {
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$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?' );
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$query->execute( array( OC_User::getUser(), $this->path, $propertyName ));
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}
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}
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else {
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if( strcmp( $propertyName, self::LASTMODIFIED_PROPERTYNAME) === 0 ) {
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$this->touch($propertyValue);
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} else {
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if(!array_key_exists( $propertyName, $existing )) {
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$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*properties` (`userid`,`propertypath`,`propertyname`,`propertyvalue`) VALUES(?,?,?,?)' );
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$query->execute( array( OC_User::getUser(), $this->path, $propertyName, $propertyValue ));
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} else {
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$query = OC_DB::prepare( 'UPDATE `*PREFIX*properties` SET `propertyvalue` = ? WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = ?' );
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$query->execute( array( $propertyValue, OC_User::getUser(), $this->path, $propertyName ));
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}
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}
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}
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}
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$this->setPropertyCache(null);
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return true;
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}
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/**
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* @brief Returns a list of properties for this nodes.;
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* @param array $properties
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* @return array
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* @note The properties list is a list of propertynames the client
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* requested, encoded as xmlnamespace#tagName, for example:
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* http://www.example.org/namespace#author If the array is empty, all
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* properties should be returned
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*/
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public function getProperties($properties) {
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if (is_null($this->property_cache)) {
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$query = OC_DB::prepare( 'SELECT * FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ?' );
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$result = $query->execute( array( OC_User::getUser(), $this->path ));
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$this->property_cache = array();
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while( $row = $result->fetchRow()) {
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$this->property_cache[$row['propertyname']] = $row['propertyvalue'];
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}
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}
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// if the array was empty, we need to return everything
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if(count($properties) == 0) {
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return $this->property_cache;
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}
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$props = array();
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foreach($properties as $property) {
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if (isset($this->property_cache[$property])) $props[$property] = $this->property_cache[$property];
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}
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return $props;
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}
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/**
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* @brief Creates a ETag for this path.
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* @param string $path Path of the file
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* @return string|null Returns null if the ETag can not effectively be determined
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*/
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static protected function createETag($path) {
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if(self::$ETagFunction) {
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$hash = call_user_func(self::$ETagFunction, $path);
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return $hash;
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}else{
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return uniqid('', true);
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}
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}
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/**
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* @brief Returns the ETag surrounded by double-quotes for this path.
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* @param string $path Path of the file
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* @return string|null Returns null if the ETag can not effectively be determined
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*/
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static public function getETagPropertyForPath($path) {
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$tag = self::createETag($path);
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if (empty($tag)) {
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return null;
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}
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$etag = '"'.$tag.'"';
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$query = OC_DB::prepare( 'INSERT INTO `*PREFIX*properties` (`userid`,`propertypath`,`propertyname`,`propertyvalue`) VALUES(?,?,?,?)' );
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$query->execute( array( OC_User::getUser(), $path, self::GETETAG_PROPERTYNAME, $etag ));
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return $etag;
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}
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/**
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* @brief Remove the ETag from the cache.
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* @param string $path Path of the file
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*/
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static public function removeETagPropertyForPath($path) {
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// remove tags from this and parent paths
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$paths = array();
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while ($path != '/' && $path != '.' && $path != '' && $path != '\\') {
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$paths[] = $path;
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$path = dirname($path);
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}
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if (empty($paths)) {
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return;
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}
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$paths[] = $path;
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$path_placeholders = join(',', array_fill(0, count($paths), '?'));
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$query = OC_DB::prepare( 'DELETE FROM `*PREFIX*properties`'
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.' WHERE `userid` = ?'
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.' AND `propertyname` = ?'
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.' AND `propertypath` IN ('.$path_placeholders.')'
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);
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$vals = array( OC_User::getUser(), self::GETETAG_PROPERTYNAME );
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$query->execute(array_merge( $vals, $paths ));
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}
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}
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