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-rw-r--r--inc/lib_filestorage.php347
1 files changed, 347 insertions, 0 deletions
diff --git a/inc/lib_filestorage.php b/inc/lib_filestorage.php
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@@ -0,0 +1,347 @@
+<?php
+
+/**
+* ownCloud
+*
+* @author Frank Karlitschek
+* @copyright 2010 Frank Karlitschek karlitschek@kde.org
+*
+* This library is free software; you can redistribute it and/or
+* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+* License as published by the Free Software Foundation; either
+* version 3 of the License, or any later version.
+*
+* This library is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+*
+* You should have received a copy of the GNU Lesser General Public
+* License along with this library. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * Privde a common interface to all different storage options
+ */
+class OC_FILESTORAGE{
+ private $observers=array();
+ /**
+ * add an observer to the list
+ * @param OC_FILEOBERSER observer
+ */
+ public function addObserver($observer){
+ $this->observers[]=$observer;
+ }
+ /**
+ * notify the observers about an action
+ * @param int action a combination of OC_FILEACTION_WRITE and OC_FILEACTION_READ
+ * @param string path relative path of the file
+ */
+ public function notifyObservers($path,$action){
+ foreach($this->observers as $observer){
+ if($observer->mask & $action){
+ $observer->notify($path,$action,$this);
+ }
+ }
+ }
+
+ public function __construct($parameters){}
+ public function mkdir($path){}
+ public function rmdir($path){}
+ public function opendir($path){}
+ public function is_dir($path){}
+ public function is_file($path){}
+ public function stat($path){}
+ public function filetype($path){}
+ public function filesize($path){}
+ public function is_readable($path){}
+ public function is_writeable($path){}
+ public function file_exists($path){}
+ public function readfile($path){}
+ public function filectime($path){}
+ public function filemtime($path){}
+ public function fileatime($path){}
+ public function file_get_contents($path){}
+ public function file_put_contents($path){}
+ public function unlink($path){}
+ public function rename($path1,$path2){}
+ public function copy($path1,$path2){}
+ public function fopen($path,$mode){}
+ public function toTmpFile($path){}//copy the file to a temporary file, used for cross-storage file actions
+ public function fromTmpFile($tmpPath,$path){}//copy a file from a temporary file, used for cross-storage file actions
+ public function getMimeType($path){}
+ public function delTree($path){}
+ public function find($path){}
+}
+
+/**
+ * for local filestore, we only have to map the paths
+ */
+class OC_FILESTORAGE_LOCAL extends OC_FILESTORAGE{
+ private $datadir;
+ public function __construct($arguments){
+ $this->datadir=$arguments['datadir'];
+ if(substr($this->datadir,-1)!=='/'){
+ $this->datadir.='/';
+ }
+ }
+ public function mkdir($path){
+ if($return=mkdir($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_CREATE);
+ }
+ return $return;
+ }
+ public function rmdir($path){
+ if($return=rmdir($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_DELETE);
+ }
+ return $return;
+ }
+ public function opendir($path){
+ if($return=opendir($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_READ);
+ }
+ return $return;
+ }
+ public function is_dir($path){
+ return is_dir($this->datadir.$path);
+ }
+ public function is_file($path){
+ return is_file($this->datadir.$path);
+ }
+ public function stat($path){
+ return stat($this->datadir.$path);
+ }
+ public function filetype($path){
+ return filetype($this->datadir.$path);
+ }
+ public function filesize($path){
+ return filesize($this->datadir.$path);
+ }
+ public function is_readable($path){
+ return is_readable($this->datadir.$path);
+ }
+ public function is_writeable($path){
+ return is_writeable($this->datadir.$path);
+ }
+ public function file_exists($path){
+ return file_exists($this->datadir.$path);
+ }
+ public function readfile($path){
+ if($return=readfile($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_READ);
+ }
+ return $return;
+ }
+ public function filectime($path){
+ return filectime($this->datadir.$path);
+ }
+ public function filemtime($path){
+ return filemtime($this->datadir.$path);
+ }
+ public function fileatime($path){
+ return fileatime($this->datadir.$path);
+ }
+ public function file_get_contents($path){
+ if($return=file_get_contents($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_READ);
+ }
+ return $return;
+ }
+ public function file_put_contents($path){
+ if($return=file_put_contents($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_WRITE);
+ }
+ }
+ public function unlink($path){
+ if($return=unlink($this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_DELETE);
+ }
+ return $return;
+ }
+ public function rename($path1,$path2){
+ if($return=rename($this->datadir.$path1,$this->datadir.$path2)){
+ $this->notifyObservers($path1.'->'.$path2,OC_FILEACTION_RENAME);
+ }
+ return $return;
+ }
+ public function copy($path1,$path2){
+ if($return=copy($this->datadir.$path1,$this->datadir.$path2)){
+ $this->notifyObservers($path2,OC_FILEACTION_CREATE);
+ }
+ return $return;
+ }
+ public function fopen($path,$mode){
+ if($return=fopen($this->datadir.$path,$mode)){
+ switch($mode){
+ case 'r':
+ $this->notifyObservers($path,OC_FILEACTION_READ);
+ break;
+ case 'r+':
+ case 'w+':
+ case 'x+':
+ case 'a+':
+ $this->notifyObservers($path,OC_FILEACTION_READ | OC_FILEACTION_WRITE);
+ break;
+ case 'w':
+ case 'x':
+ case 'a':
+ $this->notifyObservers($path,OC_FILEACTION_WRITE);
+ break;
+ }
+ }
+ return $return;
+ }
+
+ public function getMimeType($fspath){
+ if (@is_dir($this->datadir.$fspath)) {
+ // directories are easy
+ return "httpd/unix-directory";
+ } else if (function_exists("mime_content_type")) {
+ // use mime magic extension if available
+ $mime_type = mime_content_type($this->datadir.$fspath);
+ } else if (self::canExecute("file")) {
+ // it looks like we have a 'file' command,
+ // lets see it it does have mime support
+ $fp = popen("file -i '$fspath' 2>/dev/null", "r");
+ $reply = fgets($fp);
+ pclose($fp);
+
+ // popen will not return an error if the binary was not found
+ // and find may not have mime support using "-i"
+ // so we test the format of the returned string
+
+ // the reply begins with the requested filename
+ if (!strncmp($reply, "$fspath: ", strlen($fspath)+2)) {
+ $reply = substr($reply, strlen($fspath)+2);
+ // followed by the mime type (maybe including options)
+ if (preg_match('/^[[:alnum:]_-]+/[[:alnum:]_-]+;?.*/', $reply, $matches)) {
+ $mime_type = $matches[0];
+ }
+ }
+ }
+ if (empty($mime_type)) {
+ // Fallback solution: try to guess the type by the file extension
+ // TODO: add more ...
+ switch (strtolower(strrchr(basename($fspath), "."))) {
+ case ".html":
+ $mime_type = "text/html";
+ break;
+ case ".txt":
+ $mime_type = "text/plain";
+ break;
+ case ".css":
+ $mime_type = "text/css";
+ break;
+ case ".gif":
+ $mime_type = "image/gif";
+ break;
+ case ".jpg":
+ $mime_type = "image/jpeg";
+ break;
+ case ".jpeg":
+ $mime_type = "image/jpeg";
+ break;
+ case ".png":
+ $mime_type = "image/png";
+ break;
+ default:
+ $mime_type = "application/octet-stream";
+ break;
+ }
+ }
+
+ return $mime_type;
+ }
+
+ /**
+ * detect if a given program is found in the search PATH
+ *
+ * helper function used by _mimetype() to detect if the
+ * external 'file' utility is available
+ *
+ * @param string program name
+ * @param string optional search path, defaults to $PATH
+ * @return bool true if executable program found in path
+ */
+ private function canExecute($name, $path = false)
+ {
+ // path defaults to PATH from environment if not set
+ if ($path === false) {
+ $path = getenv("PATH");
+ }
+
+ // check method depends on operating system
+ if (!strncmp(PHP_OS, "WIN", 3)) {
+ // on Windows an appropriate COM or EXE file needs to exist
+ $exts = array(".exe", ".com");
+ $check_fn = "file_exists";
+ } else {
+ // anywhere else we look for an executable file of that name
+ $exts = array("");
+ $check_fn = "is_executable";
+ }
+
+ // now check the directories in the path for the program
+ foreach (explode(PATH_SEPARATOR, $path) as $dir) {
+ // skip invalid path entries
+ if (!file_exists($dir)) continue;
+ if (!is_dir($dir)) continue;
+
+ // and now look for the file
+ foreach ($exts as $ext) {
+ if ($check_fn("$dir/$name".$ext)) return true;
+ }
+ }
+
+ return false;
+ }
+
+ public function toTmpFile($path){
+ $tmpFolder=sys_get_temp_dir();
+ $filename=tempnam($tmpFolder,'OC_TEMP_FILE_'.substr($path,strrpos($path,'.')));
+ if(copy($this->datadir.$path,$filename)){
+ $this->notifyObservers($path,OC_FILEACTION_READ);
+ return $filename;
+ }else{
+ return false;
+ }
+ }
+
+ public function fromTmpFile($tmpFile,$path){
+ if(rename($tmpFile,$this->datadir.$path)){
+ $this->notifyObservers($path,OC_FILEACTION_CREATE);
+ return true;
+ }else{
+ return false;
+ }
+ }
+
+ public function delTree($dir) {
+ $dirRelative=$dir;
+ $dir=$this->datadir.$dir;
+ if (!file_exists($dir)) return true;
+ if (!is_dir($dir) || is_link($dir)) return unlink($dir);
+ foreach (scandir($dir) as $item) {
+ if ($item == '.' || $item == '..') continue;
+ if(is_file($dir.'/'.$item)){
+ if(unlink($dir.'/'.$item)){
+ $this->notifyObservers($dir.'/'.$item,OC_FILEACTION_DELETE);
+ }
+ }elseif(is_dir($dir.'/'.$item)){
+ if (!$this->delTree($dirRelative. "/" . $item)){
+ return false;
+ };
+ }
+ }
+ if($return=rmdir($dir)){
+ $this->notifyObservers($dir,OC_FILEACTION_DELETE);
+ }
+ return $return;
+ }
+
+ public function find($path){
+ return System::find($this->datadir.$path);
+ }
+}
+?> \ No newline at end of file
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