352 lines
9.9 KiB
PHP
352 lines
9.9 KiB
PHP
<?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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* @copyright 2010 Frank Karlitschek karlitschek@kde.org
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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 Lesser 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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* Privde a common interface to all different storage options
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*/
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class OC_FILESTORAGE{
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private $observers=array();
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/**
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* add an observer to the list
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* @param OC_FILEOBERSER observer
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*/
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public function addObserver($observer){
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$this->observers[]=$observer;
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}
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/**
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* notify the observers about an action
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* @param int action a combination of OC_FILEACTION_WRITE and OC_FILEACTION_READ
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* @param string path relative path of the file
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*/
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public function notifyObservers($path,$action){
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foreach($this->observers as $observer){
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if($observer->mask & $action){
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$observer->notify($path,$action,$this);
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}
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}
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}
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public function __construct($parameters){}
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public function mkdir($path){}
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public function rmdir($path){}
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public function opendir($path){}
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public function is_dir($path){}
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public function is_file($path){}
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public function stat($path){}
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public function filetype($path){}
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public function filesize($path){}
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public function is_readable($path){}
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public function is_writeable($path){}
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public function file_exists($path){}
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public function readfile($path){}
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public function filectime($path){}
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public function filemtime($path){}
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public function fileatime($path){}
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public function file_get_contents($path){}
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public function file_put_contents($path){}
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public function unlink($path){}
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public function rename($path1,$path2){}
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public function copy($path1,$path2){}
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public function fopen($path,$mode){}
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public function toTmpFile($path){}//copy the file to a temporary file, used for cross-storage file actions
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public function fromTmpFile($tmpPath,$path){}//copy a file from a temporary file, used for cross-storage file actions
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public function getMimeType($path){}
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public function delTree($path){}
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public function find($path){}
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}
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/**
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* for local filestore, we only have to map the paths
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*/
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class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
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private $datadir;
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public function __construct($arguments){
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$this->datadir=$arguments['datadir'];
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if(substr($this->datadir,-1)!=='/'){
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$this->datadir.='/';
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}
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}
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public function mkdir($path){
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if($return=mkdir($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_CREATE);
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}
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return $return;
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}
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public function rmdir($path){
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if($return=rmdir($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_DELETE);
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}
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return $return;
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}
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public function opendir($path){
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if($return=opendir($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_READ);
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}
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return $return;
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}
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public function is_dir($path){
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return is_dir($this->datadir.$path);
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}
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public function is_file($path){
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return is_file($this->datadir.$path);
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}
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public function stat($path){
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return stat($this->datadir.$path);
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}
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public function filetype($path){
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return filetype($this->datadir.$path);
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}
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public function filesize($path){
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return filesize($this->datadir.$path);
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}
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public function is_readable($path){
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return is_readable($this->datadir.$path);
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}
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public function is_writeable($path){
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return is_writeable($this->datadir.$path);
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}
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public function file_exists($path){
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return file_exists($this->datadir.$path);
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}
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public function readfile($path){
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if($return=readfile($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_READ);
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}
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return $return;
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}
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public function filectime($path){
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return filectime($this->datadir.$path);
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}
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public function filemtime($path){
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return filemtime($this->datadir.$path);
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}
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public function fileatime($path){
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return fileatime($this->datadir.$path);
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}
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public function file_get_contents($path){
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if($return=file_get_contents($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_READ);
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}
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return $return;
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}
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public function file_put_contents($path){
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if($return=file_put_contents($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_WRITE);
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}
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}
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public function unlink($path){
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if($return=unlink($this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_DELETE);
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}
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return $return;
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}
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public function rename($path1,$path2){
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if($return=rename($this->datadir.$path1,$this->datadir.$path2)){
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$this->notifyObservers($path1.'->'.$path2,OC_FILEACTION_RENAME);
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}
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return $return;
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}
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public function copy($path1,$path2){
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if($return=copy($this->datadir.$path1,$this->datadir.$path2)){
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$this->notifyObservers($path2,OC_FILEACTION_CREATE);
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}
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return $return;
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}
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public function fopen($path,$mode){
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if($return=fopen($this->datadir.$path,$mode)){
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switch($mode){
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case 'r':
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$this->notifyObservers($path,OC_FILEACTION_READ);
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break;
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case 'r+':
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case 'w+':
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case 'x+':
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case 'a+':
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$this->notifyObservers($path,OC_FILEACTION_READ | OC_FILEACTION_WRITE);
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break;
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case 'w':
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case 'x':
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case 'a':
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$this->notifyObservers($path,OC_FILEACTION_WRITE);
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break;
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}
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}
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return $return;
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}
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public function getMimeType($fspath){
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if (@is_dir($this->datadir.$fspath)) {
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// directories are easy
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return "httpd/unix-directory";
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}elseif (function_exists('finfo_open') and function_exists('finfo_file') and $finfo=finfo_open(FILEINFO_MIME)){
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$mimeType =strtolower(finfo_file($finfo,$this->datadir.$fspath));
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$mimeType=substr($mimeType,0,strpos($mimeType,';'));
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finfo_close($finfo);
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return $mimeType;
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} else if (function_exists("mime_content_type")) {
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// use mime magic extension if available
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$mime_type = mime_content_type($this->datadir.$fspath);
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} else if (self::canExecute("file")) {
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// it looks like we have a 'file' command,
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// lets see it it does have mime support
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$fp = popen("file -i '$fspath' 2>/dev/null", "r");
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$reply = fgets($fp);
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pclose($fp);
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// popen will not return an error if the binary was not found
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// and find may not have mime support using "-i"
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// so we test the format of the returned string
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// the reply begins with the requested filename
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if (!strncmp($reply, "$fspath: ", strlen($fspath)+2)) {
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$reply = substr($reply, strlen($fspath)+2);
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// followed by the mime type (maybe including options)
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if (preg_match('/^[[:alnum:]_-]+/[[:alnum:]_-]+;?.*/', $reply, $matches)) {
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$mime_type = $matches[0];
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}
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}
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}
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if (empty($mime_type)) {
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// Fallback solution: try to guess the type by the file extension
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// TODO: add more ...
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switch (strtolower(strrchr(basename($fspath), "."))) {
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case ".html":
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$mime_type = "text/html";
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break;
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case ".txt":
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$mime_type = "text/plain";
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break;
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case ".css":
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$mime_type = "text/css";
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break;
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case ".gif":
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$mime_type = "image/gif";
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break;
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case ".jpg":
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$mime_type = "image/jpeg";
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break;
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case ".jpeg":
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$mime_type = "image/jpeg";
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break;
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case ".png":
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$mime_type = "image/png";
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break;
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default:
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$mime_type = "application/octet-stream";
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break;
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}
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}
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return $mime_type;
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}
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/**
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* detect if a given program is found in the search PATH
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*
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* helper function used by _mimetype() to detect if the
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* external 'file' utility is available
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*
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* @param string program name
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* @param string optional search path, defaults to $PATH
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* @return bool true if executable program found in path
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*/
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private function canExecute($name, $path = false)
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{
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// path defaults to PATH from environment if not set
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if ($path === false) {
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$path = getenv("PATH");
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}
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// check method depends on operating system
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if (!strncmp(PHP_OS, "WIN", 3)) {
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// on Windows an appropriate COM or EXE file needs to exist
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$exts = array(".exe", ".com");
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$check_fn = "file_exists";
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} else {
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// anywhere else we look for an executable file of that name
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$exts = array("");
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$check_fn = "is_executable";
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}
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// now check the directories in the path for the program
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foreach (explode(PATH_SEPARATOR, $path) as $dir) {
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// skip invalid path entries
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if (!file_exists($dir)) continue;
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if (!is_dir($dir)) continue;
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// and now look for the file
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foreach ($exts as $ext) {
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if ($check_fn("$dir/$name".$ext)) return true;
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}
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}
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return false;
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}
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public function toTmpFile($path){
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$tmpFolder=sys_get_temp_dir();
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$filename=tempnam($tmpFolder,'OC_TEMP_FILE_'.substr($path,strrpos($path,'.')));
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if(copy($this->datadir.$path,$filename)){
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$this->notifyObservers($path,OC_FILEACTION_READ);
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return $filename;
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}else{
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return false;
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}
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}
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public function fromTmpFile($tmpFile,$path){
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if(rename($tmpFile,$this->datadir.$path)){
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$this->notifyObservers($path,OC_FILEACTION_CREATE);
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return true;
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}else{
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return false;
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}
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}
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public function delTree($dir) {
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$dirRelative=$dir;
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$dir=$this->datadir.$dir;
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if (!file_exists($dir)) return true;
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if (!is_dir($dir) || is_link($dir)) return unlink($dir);
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foreach (scandir($dir) as $item) {
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if ($item == '.' || $item == '..') continue;
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if(is_file($dir.'/'.$item)){
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if(unlink($dir.'/'.$item)){
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$this->notifyObservers($dir.'/'.$item,OC_FILEACTION_DELETE);
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}
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}elseif(is_dir($dir.'/'.$item)){
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if (!$this->delTree($dirRelative. "/" . $item)){
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return false;
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};
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}
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}
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if($return=rmdir($dir)){
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$this->notifyObservers($dir,OC_FILEACTION_DELETE);
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}
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return $return;
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}
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public function find($path){
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return System::find($this->datadir.$path);
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}
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}
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?>
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