Start of the refactoring. Commit is quite big because I forgot to use git right from the beginning. Sorry.

1 files changed, 432 insertions, 0 deletions

diff --git a/lib/filestorage.php b/lib/filestorage.php
new file mode 100644
index 00000000000..06ce26f0d23
--- /dev/null
+++ b/lib/filestorage.php
@@ -0,0 +1,432 @@
+<?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 Affero 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,$data){}
+	public function unlink($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){}
+	public function getTree($path){}
+}
+
+
+OC_FILESYSTEM::registerStorageType('local','OC_FILESTORAGE_LOCAL',array('datadir'=>'string'));
+/**
+ * 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) or substr($path,-1)=='/');
+	}
+	public function is_file($path){
+		return is_file($this->datadir.$path);
+	}
+	public function stat($path){
+		return stat($this->datadir.$path);
+	}
+	public function filetype($path){
+		$filetype=filetype($this->datadir.$path);
+		if($filetype=='link'){
+			$filetype=filetype(readlink($this->datadir.$path));
+		}
+		return $filetype;
+	}
+	public function filesize($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,$data){
+		if($return=file_put_contents($this->datadir.$path,$data)){
+			$this->notifyObservers($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,$path2){
+		if($this->is_dir($path2)){
+			if(!$this->file_exists($path2)){
+				$this->mkdir($path2);
+			}
+			$source=substr($path1,strrpos($path1,'/')+1);
+			$path2.=$source;
+		}
+		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($this->is_readable($fspath)){
+			if (@is_dir($this->datadir.$fspath)) {
+				// directories are easy
+				return "httpd/unix-directory";
+			}elseif (function_exists('finfo_open') and function_exists('finfo_file') and $finfo=finfo_open(FILEINFO_MIME)){
+				$mimeType =strtolower(finfo_file($finfo,$this->datadir.$fspath));
+				$mimeType=substr($mimeType,0,strpos($mimeType,';'));
+				finfo_close($finfo);
+				return $mimeType;
+			} 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
+				$fp = popen("file -i -b '{$this->datadir}$fspath' 2>/dev/null", "r");
+				$reply = fgets($fp);
+				pclose($fp);
+
+				//trim the character set from the end of the response
+				$mime_type=substr($reply,0,strrpos($reply,' '));
+			}
+			if (empty($mime_type)) {
+				// Fallback solution: try to guess the type by the file extension
+				// TODO: add more ...
+				switch (strtolower(strrchr(basename($fspath), "."))) {
+					case '.css':
+						$mime_type = 'text/css';
+						break;
+					case '.flac':
+						$mime_type = 'audio/flac';
+						break;
+					case '.gif':
+						$mime_type = 'image/gif';
+						break;
+					case '.gzip':
+					case '.gz':
+						$mime_type = 'application/x-gzip';
+						break;
+					case '.htm':
+					case '.html':
+						$mime_type = 'text/html';
+						break;
+					case '.jpeg':
+					case '.jpg':
+						$mime_type = 'image/jpeg';
+						break;
+					case '.js':
+						$mime_type = 'application/x-javascript';
+						break;
+					case '.oga':
+					case '.ogg':
+						$mime_type = 'audio/ogg';
+						break;
+					case '.ogv':
+						$mime_type = 'video/ogg';
+						break;
+					case '.pdf':
+						$mime_type = 'application/pdf';
+						break;
+					case '.png':
+						$mime_type = 'image/png';
+						break;
+					case '.svg':
+						$mime_type = 'image/svg+xml';
+						break;
+					case '.tar':
+						$mime_type = 'application/x-tar';
+						break;
+					case '.tgz':
+						$mime_type = 'application/x-compressed';
+						break;
+					case '.tif':
+					case '.tiff':
+						$mime_type = 'image/tiff';
+						break;
+					case '.txt':
+						$mime_type = 'text/plain';
+						break;
+					case '.zip':
+						$mime_type = 'application/zip';
+						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";
+		}
+
+        // Default check will be done with $path directories :
+        $dirs = explode(PATH_SEPARATOR, $path);
+
+		// WARNING : We have to check if open_basedir is enabled :
+		$obd = ini_get('open_basedir');
+
+		if($obd != "none")
+            $obd_values = explode(PATH_SEPARATOR, $obd);
+
+		if(count($obd_values) > 0)
+		{
+            // open_basedir is in effect !
+            // We need to check if the program is in one of these dirs :
+            $dirs = $obd_values;
+        }
+
+        foreach($dirs as $dir)
+        {
+            foreach($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.$path);
+		foreach($return as &$file){
+			$file=str_replace($file,$this->datadir,'');
+		}
+		return $return;
+	}
+
+	public function getTree($dir) {
+		if(substr($dir,-1,1)=='/'){
+			$dir=substr($dir,0,-1);
+		}
+		$tree=array();
+		$tree[]=$dir;
+		$dirRelative=$dir;
+		$dir=$this->datadir.$dir;
+		if (!file_exists($dir)) return true;
+		foreach (scandir($dir) as $item) {
+			if ($item == '.' || $item == '..') continue;
+			if(is_file($dir.'/'.$item)){
+				$tree[]=$dirRelative.'/'.$item;
+			}elseif(is_dir($dir.'/'.$item)){
+				if ($subTree=$this->getTree($dirRelative. "/" . $item)){
+					$tree=array_merge($tree,$subTree);
+				}
+			}
+		}
+		return $tree;
+	}
+}
+?>
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