721 lines
20 KiB
PHP
721 lines
20 KiB
PHP
<?php
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/**
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* @author Robin Appelman
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* @copyright 2011 Robin Appelman icewind1991@gmail.com
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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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/**
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* provide caching for filesystem info in the database
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*
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* not used by OC_Filesystem for reading filesystem info,
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* instread apps should use OC_FileCache::get where possible
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*
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* It will try to keep the data up to date but changes from outside ownCloud can invalidate the cache
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*/
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class OC_FileCache{
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private static $savedData=array();
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/**
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* get the filesystem info from the cache
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* @param string path
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* @param string root (optional)
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* @return array
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*
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* returns an assiciative array with the following keys:
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* - size
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* - mtime
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* - ctime
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* - mimetype
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* - encrypted
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* - versioned
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*/
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public static function get($path,$root=''){
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if(self::isUpdated($path,$root)){
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if(!$root){//filesystem hooks are only valid for the default root
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OC_Hook::emit('OC_Filesystem','post_write',array('path'=>$path));
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}else{
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self::fileSystemWatcherWrite(array('path'=>$path),$root);
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}
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}
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$path;
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$query=OC_DB::prepare('SELECT ctime,mtime,mimetype,size,encrypted,versioned,writable FROM *PREFIX*fscache WHERE path_hash=?');
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$result=$query->execute(array(md5($path)))->fetchRow();
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if(is_array($result)){
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return $result;
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}else{
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OC_Log::write('files','get(): file not found in cache ('.$path.')',OC_Log::DEBUG);
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return false;
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}
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}
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/**
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* put filesystem info in the cache
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* @param string $path
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* @param array data
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* @param string root (optional)
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*
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* $data is an assiciative array in the same format as returned by get
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*/
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public static function put($path,$data,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$path;
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if($path=='/'){
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$parent=-1;
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}else{
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$parent=self::getFileId(dirname($path));
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}
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$id=self::getFileId($path);
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if($id!=-1){
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self::update($id,$data);
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return;
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}
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if(isset(self::$savedData[$path])){
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$data=array_merge($data,self::$savedData[$path]);
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unset(self::$savedData[$path]);
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}
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if(!isset($data['size']) or !isset($data['mtime'])){//save incomplete data for the next time we write it
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self::$savedData[$path]=$data;
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return;
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}
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if(!isset($data['encrypted'])){
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$data['encrypted']=false;
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}
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if(!isset($data['versioned'])){
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$data['versioned']=false;
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}
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$mimePart=dirname($data['mimetype']);
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$data['size']=(int)$data['size'];
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$data['ctime']=(int)$data['mtime'];
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$data['writable']=(int)$data['writable'];
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$data['encrypted']=(int)$data['encrypted'];
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$data['versioned']=(int)$data['versioned'];
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$user=OC_User::getUser();
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$query=OC_DB::prepare('INSERT INTO *PREFIX*fscache(parent, name, path, path_hash, size, mtime, ctime, mimetype, mimepart,`user`,writable,encrypted,versioned) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)');
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$result=$query->execute(array($parent,basename($path),$path,md5($path),$data['size'],$data['mtime'],$data['ctime'],$data['mimetype'],$mimePart,$user,$data['writable'],$data['encrypted'],$data['versioned']));
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if(OC_DB::isError($result)){
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OC_Log::write('files','error while writing file('.$path.') to cache',OC_Log::ERROR);
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}
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}
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/**
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* update filesystem info of a file
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* @param int $id
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* @param array $data
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*/
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private static function update($id,$data){
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$arguments=array();
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$queryParts=array();
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foreach(array('size','mtime','ctime','mimetype','encrypted','versioned','writable') as $attribute){
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if(isset($data[$attribute])){
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$arguments[]=$data[$attribute];
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$queryParts[]=$attribute.'=?';
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}
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}
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if(isset($data['mimetype'])){
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$arguments[]=dirname($data['mimetype']);
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$queryParts[]='mimepart=?';
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}
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$arguments[]=$id;
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$sql = 'UPDATE *PREFIX*fscache SET '.implode(' , ',$queryParts).' WHERE id=?';
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$query=OC_DB::prepare($sql);
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$result=$query->execute($arguments);
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if(OC_DB::isError($result)){
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OC_Log::write('files','error while updating file('.$path.') in cache',OC_Log::ERROR);
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}
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}
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/**
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* register a file move in the cache
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* @param string oldPath
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* @param string newPath
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* @param string root (optional)
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*/
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public static function move($oldPath,$newPath,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$oldPath=$root.$oldPath;
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$newPath=$root.$newPath;
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$newParent=self::getParentId($newPath);
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$query=OC_DB::prepare('UPDATE *PREFIX*fscache SET parent=? ,name=?, path=?, path_hash=? WHERE path_hash=?');
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$query->execute(array($newParent,basename($newPath),$newPath,md5($newPath),md5($oldPath)));
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}
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/**
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* delete info from the cache
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* @param string/int $file
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* @param string root (optional)
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*/
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public static function delete($file,$root=''){
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if(!is_numeric($file)){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$file;
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self::delete(self::getFileId($path));
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}elseif($file!=-1){
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$query=OC_DB::prepare('SELECT id FROM *PREFIX*fscache WHERE parent=?');
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$result=$query->execute(array($file));
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while($child=$result->fetchRow()){
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self::delete(intval($child['id']));
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}
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$query=OC_DB::prepare('DELETE FROM *PREFIX*fscache WHERE id=?');
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$query->execute(array($file));
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}
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}
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/**
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* return array of filenames matching the querty
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* @param string $query
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* @param boolean $returnData
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* @param string root (optional)
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* @return array of filepaths
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*/
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public static function search($search,$returnData=false,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$rootLen=strlen($root);
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if(!$returnData){
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$query=OC_DB::prepare('SELECT path FROM *PREFIX*fscache WHERE name LIKE ? AND `user`=?');
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}else{
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$query=OC_DB::prepare('SELECT * FROM *PREFIX*fscache WHERE name LIKE ? AND `user`=?');
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}
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$result=$query->execute(array("%$search%",OC_User::getUser()));
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$names=array();
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while($row=$result->fetchRow()){
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if(!$returnData){
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$names[]=substr($row['path'],$rootLen);
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}else{
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$row['path']=substr($row['path'],$rootLen);
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$names[]=$row;
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}
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}
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return $names;
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}
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/**
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* get all files and folders in a folder
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* @param string path
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* @param string root (optional)
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* @return array
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*
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* returns an array of assiciative arrays with the following keys:
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* - name
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* - size
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* - mtime
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* - ctime
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* - mimetype
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* - encrypted
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* - versioned
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*/
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public static function getFolderContent($path,$root='',$mimetype_filter=''){
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if(self::isUpdated($path,$root)){
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self::updateFolder($path,$root);
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}
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$path;
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$parent=self::getFileId($path);
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$query=OC_DB::prepare('SELECT name,ctime,mtime,mimetype,size,encrypted,versioned,writable FROM *PREFIX*fscache WHERE parent=? AND (mimetype LIKE ? OR mimetype = ?)');
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$result=$query->execute(array($parent, $mimetype_filter.'%', 'httpd/unix-directory'))->fetchAll();
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if(is_array($result)){
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return $result;
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}else{
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OC_Log::write('files','getFolderContent(): file not found in cache ('.$path.')',OC_Log::DEBUG);
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return false;
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}
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}
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/**
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* check if a file or folder is in the cache
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* @param string $path
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* @param string root (optional)
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* @return bool
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*/
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public static function inCache($path,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$path;
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return self::getFileId($path)!=-1;
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}
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/**
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* get the file id as used in the cache
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* unlike the public getId, full paths are used here (/usename/files/foo instead of /foo)
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* @param string $path
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* @return int
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*/
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private static function getFileId($path){
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$query=OC_DB::prepare('SELECT id FROM *PREFIX*fscache WHERE path_hash=?');
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if(OC_DB::isError($query)){
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OC_Log::write('files','error while getting file id of '.$path,OC_Log::ERROR);
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return -1;
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}
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$result=$query->execute(array(md5($path)));
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if(OC_DB::isError($result)){
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OC_Log::write('files','error while getting file id of '.$path,OC_Log::ERROR);
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return -1;
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}
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$result=$result->fetchRow();
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if(is_array($result)){
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return $result['id'];
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}else{
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OC_Log::write('files','getFileId(): file not found in cache ('.$path.')',OC_Log::DEBUG);
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return -1;
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}
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}
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/**
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* get the file id as used in the cache
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* @param string path
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* @param string root (optional)
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* @return int
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*/
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public static function getId($path,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$root.$path;
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return self::getFileId($path);
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}
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/**
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* get the file path from the id, relative to the home folder of the user
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* @param int id
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* @param string user (optional)
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* @return string
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*/
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public static function getPath($id,$user=''){
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if(!$user){
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$user=OC_User::getUser();
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}
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$query=OC_DB::prepare('SELECT path FROM *PREFIX*fscache WHERE id=? AND `user`=?');
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$result=$query->execute(array($id,$user));
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$row=$result->fetchRow();
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$path=$row['path'];
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$root='/'.$user.'/files';
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if(substr($path,0,strlen($root))!=$root){
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return false;
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}
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return substr($path,strlen($root));
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}
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/**
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* get the file id of the parent folder, taking into account '/' has no parent
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* @param string $path
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* @return int
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*/
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private static function getParentId($path){
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if($path=='/'){
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return -1;
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}else{
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return self::getFileId(dirname($path));
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}
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}
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/**
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* called when changes are made to files
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* @param array $params
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* @param string root (optional)
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*/
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public static function fileSystemWatcherWrite($params,$root=''){
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if(!$root){
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$view=OC_Filesystem::getView();
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}else{
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$view=new OC_FilesystemView(($root=='/')?'':$root);
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}
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$path=$params['path'];
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$fullPath=$view->getRoot().$path;
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$mimetype=$view->getMimeType($path);
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$dir=$view->is_dir($path.'/');
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//dont use self::get here, we don't want inifinte loops when a file has changed
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$cachedSize=self::getCachedSize($path,$root);
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$size=0;
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if($dir){
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if(self::inCache($path,$root)){
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$parent=self::getFileId($fullPath);
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$query=OC_DB::prepare('SELECT size FROM *PREFIX*fscache WHERE parent=?');
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$result=$query->execute(array($parent));
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while($row=$result->fetchRow()){
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$size+=$row['size'];
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}
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$mtime=$view->filemtime($path);
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$ctime=$view->filectime($path);
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$writable=$view->is_writable($path);
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self::put($path,array('size'=>$size,'mtime'=>$mtime,'ctime'=>$ctime,'mimetype'=>$mimetype,'writable'=>$writable));
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}else{
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$count=0;
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self::scan($path,null,$count,$root);
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}
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}else{
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$size=self::scanFile($path,$root);
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}
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self::increaseSize(dirname($fullPath),$size-$cachedSize);
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}
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public static function getCached($path,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}else{
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if($root=='/'){
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$root='';
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}
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}
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$path=$root.$path;
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$query=OC_DB::prepare('SELECT ctime,mtime,mimetype,size,encrypted,versioned,writable FROM *PREFIX*fscache WHERE path_hash=?');
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$result=$query->execute(array(md5($path)))->fetchRow();
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if(is_array($result)){
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if(isset(self::$savedData[$path])){
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$result=array_merge($result,self::$savedData[$path]);
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}
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return $result;
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}else{
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OC_Log::write('files','getChached(): file not found in cache ('.$path.')',OC_Log::DEBUG);
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if(isset(self::$savedData[$path])){
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return self::$savedData[$path];
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}else{
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return array();
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}
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}
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}
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private static function getCachedSize($path,$root){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}else{
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if($root=='/'){
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$root='';
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}
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}
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$path=$root.$path;
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$query=OC_DB::prepare('SELECT size FROM *PREFIX*fscache WHERE path_hash=?');
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$result=$query->execute(array(md5($path)));
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if($row=$result->fetchRow()){
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return $row['size'];
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}else{//file not in cache
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return 0;
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}
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}
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|
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/**
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* called when files are deleted
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* @param array $params
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* @param string root (optional)
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*/
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public static function fileSystemWatcherDelete($params,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$path=$params['path'];
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$fullPath=$root.$path;
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if(self::getFileId($fullPath)==-1){
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return;
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}
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$size=self::getCachedSize($path,$root);
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self::increaseSize(dirname($fullPath),-$size);
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self::delete($path);
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}
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/**
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* called when files are deleted
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* @param array $params
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* @param string root (optional)
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*/
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public static function fileSystemWatcherRename($params,$root=''){
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if(!$root){
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$root=OC_Filesystem::getRoot();
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}
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if($root=='/'){
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$root='';
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}
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$oldPath=$params['oldpath'];
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$newPath=$params['newpath'];
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$fullOldPath=$root.$oldPath;
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$fullNewPath=$root.$newPath;
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if(($id=self::getFileId($fullOldPath))!=-1){
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$oldSize=self::getCachedSize($oldPath,$root);
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}else{
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return;
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}
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$size=OC_Filesystem::filesize($newPath);
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self::increaseSize(dirname($fullOldPath),-$oldSize);
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self::increaseSize(dirname($fullNewPath),$oldSize);
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self::move($oldPath,$newPath);
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}
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/**
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* adjust the size of the parent folders
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* @param string $path
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* @param int $sizeDiff
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*/
|
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private static function increaseSize($path,$sizeDiff){
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if($sizeDiff==0) return;
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while(($id=self::getFileId($path))!=-1){//walk up the filetree increasing the size of all parent folders
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$query=OC_DB::prepare('UPDATE *PREFIX*fscache SET size=size+? WHERE id=?');
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$query->execute(array($sizeDiff,$id));
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$path=dirname($path);
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}
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}
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/**
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* recursively scan the filesystem and fill the cache
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|
* @param string $path
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* @param OC_EventSource $enventSource (optional)
|
|
* @param int count (optional)
|
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* @param string root (optionak)
|
|
*/
|
|
public static function scan($path,$eventSource=false,&$count=0,$root=''){
|
|
if($eventSource){
|
|
$eventSource->send('scanning',array('file'=>$path,'count'=>$count));
|
|
}
|
|
$lastSend=$count;
|
|
if(!$root){
|
|
$view=OC_Filesystem::getView();
|
|
}else{
|
|
$view=new OC_FilesystemView(($root=='/')?'':$root);
|
|
}
|
|
self::scanFile($path,$root);
|
|
$dh=$view->opendir($path.'/');
|
|
$totalSize=0;
|
|
if($dh){
|
|
while (($filename = readdir($dh)) !== false) {
|
|
if($filename != '.' and $filename != '..'){
|
|
$file=$path.'/'.$filename;
|
|
if($view->is_dir($file.'/')){
|
|
self::scan($file,$eventSource,$count,$root);
|
|
}else{
|
|
$totalSize+=self::scanFile($file,$root);
|
|
$count++;
|
|
if($count>$lastSend+25 and $eventSource){
|
|
$lastSend=$count;
|
|
$eventSource->send('scanning',array('file'=>$path,'count'=>$count));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
self::cleanFolder($path,$root);
|
|
self::increaseSize($view->getRoot().$path,$totalSize);
|
|
}
|
|
|
|
/**
|
|
* scan a single file
|
|
* @param string path
|
|
* @param string root (optional)
|
|
* @return int size of the scanned file
|
|
*/
|
|
public static function scanFile($path,$root=''){
|
|
if(!$root){
|
|
$view=OC_Filesystem::getView();
|
|
}else{
|
|
$view=new OC_FilesystemView(($root=='/')?'':$root);
|
|
}
|
|
if(!$view->is_readable($path)) return; //cant read, nothing we can do
|
|
clearstatcache();
|
|
$stat=$view->stat($path);
|
|
$mimetype=$view->getMimeType($path);
|
|
$writable=$view->is_writable($path);
|
|
$stat['mimetype']=$mimetype;
|
|
$stat['writable']=$writable;
|
|
if($path=='/'){
|
|
$path='';
|
|
}
|
|
self::put($path,$stat,$root);
|
|
return $stat['size'];
|
|
}
|
|
|
|
/**
|
|
* find files by mimetype
|
|
* @param string $part1
|
|
* @param string $part2 (optional)
|
|
* @param string root (optional)
|
|
* @return array of file paths
|
|
*
|
|
* $part1 and $part2 together form the complete mimetype.
|
|
* e.g. searchByMime('text','plain')
|
|
*
|
|
* seccond mimetype part can be ommited
|
|
* e.g. searchByMime('audio')
|
|
*/
|
|
public static function searchByMime($part1,$part2=null,$root=null){
|
|
if(!$root){
|
|
$root=OC_Filesystem::getRoot();
|
|
}elseif($root=='/'){
|
|
$root='';
|
|
}
|
|
$rootLen=strlen($root);
|
|
$root .= '%';
|
|
$user=OC_User::getUser();
|
|
if(!$part2){
|
|
$query=OC_DB::prepare('SELECT path FROM *PREFIX*fscache WHERE mimepart=? AND `user`=? AND path LIKE ?');
|
|
$result=$query->execute(array($part1,$user, $root));
|
|
}else{
|
|
$query=OC_DB::prepare('SELECT path FROM *PREFIX*fscache WHERE mimetype=? AND `user`=? AND path LIKE ? ');
|
|
$result=$query->execute(array($part1.'/'.$part2,$user, $root));
|
|
}
|
|
$names=array();
|
|
while($row=$result->fetchRow()){
|
|
$names[]=substr($row['path'],$rootLen);
|
|
}
|
|
return $names;
|
|
}
|
|
|
|
/**
|
|
* check if a file or folder is updated outside owncloud
|
|
* @param string path
|
|
* @param string root (optional)
|
|
* @return bool
|
|
*/
|
|
public static function isUpdated($path,$root=''){
|
|
if(!$root){
|
|
$root=OC_Filesystem::getRoot();
|
|
$view=OC_Filesystem::getView();
|
|
}else{
|
|
if($root=='/'){
|
|
$root='';
|
|
}
|
|
$view=new OC_FilesystemView($root);
|
|
}
|
|
if(!$view->file_exists($path)){
|
|
return false;
|
|
}
|
|
$mtime=$view->filemtime($path);
|
|
$isDir=$view->is_dir($path);
|
|
$path=$root.$path;
|
|
$query=OC_DB::prepare('SELECT mtime FROM *PREFIX*fscache WHERE path_hash=?');
|
|
$result=$query->execute(array(md5($path)));
|
|
if($row=$result->fetchRow()){
|
|
$cachedMTime=$row['mtime'];
|
|
return ($mtime>$cachedMTime);
|
|
}else{//file not in cache, so it has to be updated
|
|
return !($isDir);//new folders are handeled sperate
|
|
}
|
|
}
|
|
|
|
/**
|
|
* update the cache according to changes in the folder
|
|
* @param string path
|
|
* @param string root (optional)
|
|
*/
|
|
private static function updateFolder($path,$root=''){
|
|
if(!$root){
|
|
$view=OC_Filesystem::getView();
|
|
}else{
|
|
$view=new OC_FilesystemView(($root=='/')?'':$root);
|
|
}
|
|
$dh=$view->opendir($path.'/');
|
|
if($dh){//check for changed/new files
|
|
while (($filename = readdir($dh)) !== false) {
|
|
if($filename != '.' and $filename != '..'){
|
|
$file=$path.'/'.$filename;
|
|
if(self::isUpdated($file,$root)){
|
|
if(!$root){//filesystem hooks are only valid for the default root
|
|
OC_Hook::emit('OC_Filesystem','post_write',array('path'=>$file));
|
|
}else{
|
|
self::fileSystemWatcherWrite(array('path'=>$file),$root);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
self::cleanFolder($path,$root);
|
|
|
|
//update the folder last, so we can calculate the size correctly
|
|
if(!$root){//filesystem hooks are only valid for the default root
|
|
OC_Hook::emit('OC_Filesystem','post_write',array('path'=>$path));
|
|
}else{
|
|
self::fileSystemWatcherWrite(array('path'=>$path),$root);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* delete non existing files from the cache
|
|
*/
|
|
private static function cleanFolder($path,$root=''){
|
|
if(!$root){
|
|
$view=OC_Filesystem::getView();
|
|
}else{
|
|
$view=new OC_FilesystemView(($root=='/')?'':$root);
|
|
}
|
|
//check for removed files, not using getFolderContent to prevent loops
|
|
$parent=self::getFileId($view->getRoot().$path);
|
|
$query=OC_DB::prepare('SELECT name FROM *PREFIX*fscache WHERE parent=?');
|
|
$result=$query->execute(array($parent));
|
|
while($row=$result->fetchRow()){
|
|
$file=$path.'/'.$row['name'];
|
|
if(!$view->file_exists($file)){
|
|
if(!$root){//filesystem hooks are only valid for the default root
|
|
OC_Hook::emit('OC_Filesystem','post_delete',array('path'=>$file));
|
|
}else{
|
|
self::fileSystemWatcherDelete(array('path'=>$file),$root);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* clean old pre-path_hash entries
|
|
*/
|
|
public static function clean(){
|
|
$query=OC_DB::prepare('DELETE FROM *PREFIX*fscache WHERE LENGTH(path_hash)<30');
|
|
$query->execute();
|
|
}
|
|
}
|
|
|
|
//watch for changes and try to keep the cache up to date
|
|
OC_Hook::connect('OC_Filesystem','post_write','OC_FileCache','fileSystemWatcherWrite');
|
|
OC_Hook::connect('OC_Filesystem','post_delete','OC_FileCache','fileSystemWatcherDelete');
|
|
OC_Hook::connect('OC_Filesystem','post_rename','OC_FileCache','fileSystemWatcherRename');
|