nextcloud/lib/files.php

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<?php
/**
* ownCloud
*
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* @author Frank Karlitschek
* @copyright 2010 Frank Karlitschek karlitschek@kde.org
*
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* This library is free software; you can redistribute it and/or
* 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,
* 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.
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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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*/
/**
* Class for fileserver access
*
*/
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class OC_Files {
static $tmpFiles=array();
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/**
* get the content of a directory
* @param dir $directory
*/
public static function getDirectoryContent($directory){
if(strpos($directory,OC::$CONFIG_DATADIRECTORY)===0){
$directory=substr($directory,strlen(OC::$CONFIG_DATADIRECTORY));
}
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$filesfound=true;
$content=array();
$dirs=array();
$file=array();
$files=array();
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if(OC_Filesystem::is_dir($directory)) {
if ($dh = OC_Filesystem::opendir($directory)) {
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while (($filename = readdir($dh)) !== false) {
if($filename<>'.' and $filename<>'..' and substr($filename,0,1)!='.'){
$file=array();
$filesfound=true;
$file['name']=$filename;
$file['directory']=$directory;
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$stat=OC_Filesystem::stat($directory.'/'.$filename);
$file=array_merge($file,$stat);
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$file['size']=OC_Filesystem::filesize($directory.'/'.$filename);
$file['mime']=OC_Files::getMimeType($directory .'/'. $filename);
$file['readable']=OC_Filesystem::is_readable($directory .'/'. $filename);
$file['writeable']=OC_Filesystem::is_writeable($directory .'/'. $filename);
$file['type']=OC_Filesystem::filetype($directory .'/'. $filename);
if($file['type']=='dir'){
$dirs[$file['name']]=$file;
}else{
$files[$file['name']]=$file;
}
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}
}
closedir($dh);
}
}
uksort($dirs, "strnatcasecmp");
uksort($files, "strnatcasecmp");
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$content=array_merge($dirs,$files);
if($filesfound){
return $content;
}else{
return false;
}
}
/**
* return the content of a file or return a zip file containning multiply files
*
* @param dir $dir
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* @param file $file ; seperated list of files to download
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*/
public static function get($dir,$files){
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if(strpos($files,';')){
$files=explode(';',$files);
}
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if(is_array($files)){
$zip = new ZipArchive();
$filename = get_temp_dir()."/ownCloud.zip";
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if ($zip->open($filename, ZIPARCHIVE::CREATE)!==TRUE) {
exit("cannot open <$filename>\n");
}
foreach($files as $file){
$file=$dir.'/'.$file;
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if(OC_Filesystem::is_file($file)){
$tmpFile=OC_Filesystem::toTmpFile($file);
self::$tmpFiles[]=$tmpFile;
$zip->addFile($tmpFile,basename($file));
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}elseif(OC_Filesystem::is_dir($file)){
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self::zipAddDir($file,$zip);
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}
}
$zip->close();
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}elseif(OC_Filesystem::is_dir($dir.'/'.$files)){
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$zip = new ZipArchive();
$filename = get_temp_dir()."/ownCloud.zip";
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if ($zip->open($filename, ZIPARCHIVE::CREATE)!==TRUE) {
exit("cannot open <$filename>\n");
}
$file=$dir.'/'.$files;
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self::zipAddDir($file,$zip);
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$zip->close();
}else{
$zip=false;
$filename=$dir.'/'.$files;
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}
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if($zip or OC_Filesystem::is_readable($filename)){
header('Content-Disposition: attachment; filename="'.basename($filename).'"');
header('Content-Transfer-Encoding: binary');
header('Expires: 0');
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
header('Pragma: public');
if($zip){
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header('Content-Type: application/zip');
header('Content-Length: ' . filesize($filename));
}else{
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header('Content-Type: ' . OC_Filesystem::getMimeType($filename));
header('Content-Length: ' . OC_Filesystem::filesize($filename));
}
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}elseif($zip or !OC_Filesystem::file_exists($filename)){
header("HTTP/1.0 404 Not Found");
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$tmpl = new OC_Template( '', '404', 'guest' );
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$tmpl->assign('file',$filename);
$tmpl->printPage();
// die('404 Not Found');
}else{
header("HTTP/1.0 403 Forbidden");
die('403 Forbidden');
}
@ob_end_clean();
if($zip){
readfile($filename);
unlink($filename);
}else{
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OC_Filesystem::readfile($filename);
}
foreach(self::$tmpFiles as $tmpFile){
if(file_exists($tmpFile) and is_file($tmpFile)){
unlink($tmpFile);
}
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}
}
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public static function zipAddDir($dir,$zip,$internalDir=''){
$dirname=basename($dir);
$zip->addEmptyDir($internalDir.$dirname);
$internalDir.=$dirname.='/';
$files=OC_Files::getdirectorycontent($dir);
foreach($files as $file){
$filename=$file['name'];
$file=$dir.'/'.$filename;
if(OC_Filesystem::is_file($file)){
$tmpFile=OC_Filesystem::toTmpFile($file);
OC_Files::$tmpFiles[]=$tmpFile;
$zip->addFile($tmpFile,$internalDir.$filename);
}elseif(OC_Filesystem::is_dir($file)){
self::zipAddDir($file,$zip,$internalDir);
}
}
}
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/**
* move a file or folder
*
* @param dir $sourceDir
* @param file $source
* @param dir $targetDir
* @param file $target
*/
public static function move($sourceDir,$source,$targetDir,$target){
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if(OC_User::isLoggedIn()){
$targetFile=$targetDir.'/'.$target;
$sourceFile=$sourceDir.'/'.$source;
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return OC_Filesystem::rename($sourceFile,$targetFile);
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}
}
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/**
* copy a file or folder
*
* @param dir $sourceDir
* @param file $source
* @param dir $targetDir
* @param file $target
*/
public static function copy($sourceDir,$source,$targetDir,$target){
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if(OC_User::isLoggedIn()){
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$targetFile=$targetDir.'/'.$target;
$sourceFile=$sourceDir.'/'.$source;
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return OC_Filesystem::copy($sourceFile,$targetFile);
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}
}
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/**
* create a new file or folder
*
* @param dir $dir
* @param file $name
* @param type $type
*/
public static function newFile($dir,$name,$type){
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if(OC_User::isLoggedIn()){
$file=$dir.'/'.$name;
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if($type=='dir'){
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return OC_Filesystem::mkdir($file);
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}elseif($type=='file'){
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$fileHandle=OC_Filesystem::fopen($file, 'w');
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if($fileHandle){
fclose($fileHandle);
return true;
}else{
return false;
}
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}
}
}
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/**
* deletes a file or folder
*
* @param dir $dir
* @param file $name
*/
public static function delete($dir,$file){
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if(OC_User::isLoggedIn()){
$file=$dir.'/'.$file;
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return OC_Filesystem::unlink($file);
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}
}
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/**
* try to detect the mime type of a file
*
* @param string path
* @return string guessed mime type
*/
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static function getMimeType($path){
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return OC_Filesystem::getMimeType($path);
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}
/**
* get a file tree
*
* @param string path
* @return array
*/
static function getTree($path){
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return OC_Filesystem::getTree($path);
}
/**
* pull a file from a remote server
* @param string source
* @param string token
* @param string dir
* @param string file
* @return string guessed mime type
*/
static function pull($source,$token,$dir,$file){
$tmpfile=tempnam(get_temp_dir(),'remoteCloudFile');
$fp=fopen($tmpfile,'w+');
$url=$source.="/files/pull.php?token=$token";
$ch=curl_init();
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch, CURLOPT_FILE, $fp);
curl_exec($ch);
fclose($fp);
$info=curl_getinfo($ch);
$httpCode=$info['http_code'];
curl_close($ch);
if($httpCode==200 or $httpCode==0){
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OC_Filesystem::fromTmpFile($tmpfile,$dir.'/'.$file);
return true;
}else{
return false;
}
}
/**
* set the maximum upload size limit for apache hosts using .htaccess
* @param int size filesisze in bytes
*/
static function setUploadLimit($size){
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$size=OC_Helper::humanFileSize($size);
$size=substr($size,0,-1);//strip the B
$size=str_replace(' ','',$size); //remove the space between the size and the postfix
$content = "ErrorDocument 404 /".OC::$WEBROOT."/core/templates/404.php\n";//custom 404 error page
$content.= "php_value upload_max_filesize $size\n";//upload limit
$content.= "php_value post_max_size $size\n";
$content.= "SetEnv htaccessWorking true\n";
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$content.= "Options -Indexes\n";
@file_put_contents(OC::$SERVERROOT.'/.htaccess', $content); //supress errors in case we don't have permissions for it
}
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}