Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
411 lines (390 sloc) 11.4 KB
<?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/>.
*
*/
/**
* Class for fileserver access
*
*/
class OC_Files {
static $tmpFiles=array();
/**
* 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));
}
$filesfound=true;
$content=array();
$dirs=array();
$file=array();
$files=array();
if(OC_Filesystem::is_dir($directory)) {
if ($dh = OC_Filesystem::opendir($directory)) {
while (($filename = readdir($dh)) !== false) {
if($filename<>'.' and $filename<>'..' and substr($filename,0,1)!='.'){
$file=array();
$filesfound=true;
$file['name']=$filename;
$file['directory']=$directory;
$stat=OC_Filesystem::stat($directory.'/'.$filename);
$file=array_merge($file,$stat);
$file['size']=OC_Filesystem::filesize($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']]=$file;
}
}
}
closedir($dh);
}
}
uksort($dirs, "strnatcasecmp");
uksort($files, "strnatcasecmp");
$content=array_merge($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
* @param file $file ; seperated list of files to download
*/
public static function get($dir,$files){
if(strpos($files,';')){
$files=explode(';',$files);
}
if(is_array($files)){
self::validateZipDownload($dir,$files);
$executionTime = intval(ini_get('max_execution_time'));
set_time_limit(0);
$zip = new ZipArchive();
$filename = get_temp_dir().'/ownCloud_'.mt_rand(10000,99999).'.zip';
if ($zip->open($filename, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE)!==TRUE) {
exit("cannot open <$filename>\n");
}
foreach($files as $file){
$file=$dir.'/'.$file;
if(OC_Filesystem::is_file($file)){
$tmpFile=OC_Filesystem::toTmpFile($file);
self::$tmpFiles[]=$tmpFile;
$zip->addFile($tmpFile,basename($file));
}elseif(OC_Filesystem::is_dir($file)){
self::zipAddDir($file,$zip);
}
}
$zip->close();
self::$tmpFiles[] = $filename;
set_time_limit($executionTime);
}elseif(OC_Filesystem::is_dir($dir.'/'.$files)){
self::validateZipDownload($dir,$files);
$executionTime = intval(ini_get('max_execution_time'));
set_time_limit(0);
$zip = new ZipArchive();
$filename = get_temp_dir().'/ownCloud_'.mt_rand(10000,99999).'.zip';
if ($zip->open($filename, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE)!==TRUE) {
exit("cannot open <$filename>\n");
}
$file=$dir.'/'.$files;
self::zipAddDir($file,$zip);
$zip->close();
self::$tmpFiles[] = $filename;
set_time_limit($executionTime);
}else{
$zip=false;
$filename=$dir.'/'.$files;
}
self::markTmpFiles();
if($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($zip){
header('Content-Type: application/zip');
header('Content-Length: ' . filesize($filename));
}else{
header('Content-Type: ' . OC_Filesystem::getMimeType($filename));
header('Content-Length: ' . OC_Filesystem::filesize($filename));
}
}elseif($zip or !OC_Filesystem::file_exists($filename)){
header("HTTP/1.0 404 Not Found");
$tmpl = new OC_Template( '', '404', 'guest' );
$tmpl->assign('file',$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{
OC_Filesystem::readfile($filename);
}
}
public static function zipAddDir($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);
}
}
}
/**
* 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){
if(OC_User::isLoggedIn()){
$targetFile=self::normalizePath($targetDir.'/'.$target);
$sourceFile=self::normalizePath($sourceDir.'/'.$source);
return OC_Filesystem::rename($sourceFile,$targetFile);
}
}
/**
* 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){
if(OC_User::isLoggedIn()){
$targetFile=$targetDir.'/'.$target;
$sourceFile=$sourceDir.'/'.$source;
return OC_Filesystem::copy($sourceFile,$targetFile);
}
}
/**
* create a new file or folder
*
* @param dir $dir
* @param file $name
* @param type $type
*/
public static function newFile($dir,$name,$type){
if(OC_User::isLoggedIn()){
$file=$dir.'/'.$name;
if($type=='dir'){
return OC_Filesystem::mkdir($file);
}elseif($type=='file'){
$fileHandle=OC_Filesystem::fopen($file, 'w');
if($fileHandle){
fclose($fileHandle);
return true;
}else{
return false;
}
}
}
}
/**
* deletes a file or folder
*
* @param dir $dir
* @param file $name
*/
public static function delete($dir,$file){
if(OC_User::isLoggedIn()){
$file=$dir.'/'.$file;
return OC_Filesystem::unlink($file);
}
}
static function markTmpFiles() {
$worklistFile = get_temp_dir().'/__ownCloudUndeletedTempfiles';
if(file_exists($worklistFile)) {
$unlinkFiles = unserialize(file_get_contents($worklistFile));
if(is_array($unlinkFiles)){
self::$tmpFiles = array_merge(self::$tmpFiles, $unlinkFiles);
}
}
if(count(self::$tmpFiles) > 0) {
file_put_contents($worklistFile, serialize(self::$tmpFiles));
}
}
static function cleanTmpFiles() {
$worklistFile = get_temp_dir().'/__ownCloudUndeletedTempfiles';
if(file_exists($worklistFile)) {
$unlinkFiles = unserialize(file_get_contents($worklistFile));
if(is_array($unlinkFiles)){
foreach($unlinkFiles as $key => $tmpFile){
if(file_exists($tmpFile) and is_file($tmpFile)){
if(unlink($tmpFile)) {
unset($unlinkFiles[$key]);
}
} else {
unset($unlinkFiles[$key]);
}
}
}
unlink($worklistFile);
}
}
/**
* checks if the selected files are within the size constraint. If not, outputs an error page.
*
* @param dir $dir
* @param files $files
*/
static function validateZipDownload($dir, $files) {
if(!OC_Config::getValue('allowZipDownload', true)) {
$l = new OC_L10N('files');
header("HTTP/1.0 409 Conflict");
$tmpl = new OC_Template( '', 'error', 'user' );
$errors = array(
array(
'error' => $l->t('ZIP download is turned off.'),
'hint' => $l->t('Files need to be downloaded one by one.') . '<br/><a href="javascript:history.back()">' . $l->t('Back to Files') . '</a>',
)
);
$tmpl->assign('errors', $errors);
$tmpl->printPage();
exit;
}
$zipLimit = OC_Config::getValue('maxZipInputSize', OC_Helper::computerFileSize('800 MB'));
if($zipLimit > 0) {
$totalsize = 0;
if(is_array($files)){
foreach($files as $file){
$totalsize += OC_Filesystem::filesize($dir.'/'.$file);
}
}else{
$totalsize += OC_Filesystem::filesize($dir.'/'.$files);
}
if($totalsize > $zipLimit) {
$l = new OC_L10N('files');
header("HTTP/1.0 409 Conflict");
$tmpl = new OC_Template( '', 'error', 'user' );
$errors = array(
array(
'error' => $l->t('Selected files too large to generate zip file.'),
'hint' => 'Download the files in smaller chunks, seperately or kindly ask your administrator.<br/><a href="javascript:history.back()">' . $l->t('Back to Files') . '</a>',
)
);
$tmpl->assign('errors', $errors);
$tmpl->printPage();
exit;
}
}
}
/**
* try to detect the mime type of a file
*
* @param string path
* @return string guessed mime type
*/
static function getMimeType($path){
return OC_Filesystem::getMimeType($path);
}
/**
* get a file tree
*
* @param string path
* @return array
*/
static function getTree($path){
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 $httpCode==0){
OC_Filesystem::fromTmpFile($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){
$size=OC_Helper::humanFileSize($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";
$content.= "Options -Indexes\n";
@file_put_contents(OC::$SERVERROOT.'/.htaccess', $content); //supress errors in case we don't have permissions for it
}
/**
* normalize a path, removing any double, add leading /, etc
* @param string $path
* @return string
*/
static public function normalizePath($path){
$path='/'.$path;
$old='';
while($old!=$path){//replace any multiplicity of slashes with a single one
$old=$path;
$path=str_replace('//','/',$path);
}
return $path;
}
}