292 lines
7.5 KiB
PHP
292 lines
7.5 KiB
PHP
<?php
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/**
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* ownCloud
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*
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* @author Michael Gapczynski
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* @copyright 2012 Michael Gapczynski GapczynskiM@gmail.com
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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 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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/**
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* Storage backend class for providing common filesystem operation methods
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* which are not storage-backend specific.
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*
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* OC_Filestorage_Common is never used directly; it is extended by all other
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* storage backends, where its methods may be overridden, and additional
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* (backend-specific) methods are defined.
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*
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* Some OC_Filestorage_Common methods call functions which are first defined
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* in classes which extend it, e.g. $this->stat() .
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*/
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abstract class OC_Filestorage_Common extends OC_Filestorage {
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public function __construct($parameters) {}
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// abstract public function mkdir($path);
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// abstract public function rmdir($path);
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// abstract public function opendir($path);
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public function is_dir($path) {
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return $this->filetype($path)=='dir';
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}
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public function is_file($path) {
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return $this->filetype($path)=='file';
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}
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// abstract public function stat($path);
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// abstract public function filetype($path);
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public function filesize($path) {
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if($this->is_dir($path)) {
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return 0;//by definition
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}else{
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$stat = $this->stat($path);
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return $stat['size'];
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}
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}
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public function isCreatable($path) {
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return $this->isUpdatable($path);
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}
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// abstract public function isReadable($path);
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// abstract public function isUpdatable($path);
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public function isDeletable($path) {
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return $this->isUpdatable($path);
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}
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public function isSharable($path) {
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return $this->isReadable($path);
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}
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// abstract public function file_exists($path);
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public function filectime($path) {
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$stat = $this->stat($path);
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return $stat['ctime'];
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}
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public function filemtime($path) {
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$stat = $this->stat($path);
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return $stat['mtime'];
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}
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public function fileatime($path) {
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$stat = $this->stat($path);
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return $stat['atime'];
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}
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public function file_get_contents($path) {
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$handle = $this->fopen($path, "r");
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if(!$handle) {
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return false;
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}
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$size=$this->filesize($path);
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if($size==0) {
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return '';
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}
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return fread($handle, $size);
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}
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public function file_put_contents($path, $data) {
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$handle = $this->fopen($path, "w");
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return fwrite($handle, $data);
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}
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// abstract public function unlink($path);
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public function rename($path1, $path2) {
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if($this->copy($path1, $path2)) {
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return $this->unlink($path1);
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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 copy($path1, $path2) {
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$source=$this->fopen($path1, 'r');
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$target=$this->fopen($path2, 'w');
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$count=OC_Helper::streamCopy($source, $target);
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return $count>0;
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}
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// abstract public function fopen($path, $mode);
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/**
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* @brief Deletes all files and folders recursively within a directory
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* @param $directory The directory whose contents will be deleted
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* @param $empty Flag indicating whether directory will be emptied
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* @returns true/false
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*
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* @note By default the directory specified by $directory will be
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* deleted together with its contents. To avoid this set $empty to true
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*/
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public function deleteAll( $directory, $empty = false ) {
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// strip leading slash
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if( substr( $directory, 0, 1 ) == "/" ) {
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$directory = substr( $directory, 1 );
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}
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// strip trailing slash
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if( substr( $directory, -1) == "/" ) {
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$directory = substr( $directory, 0, -1 );
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}
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if ( !$this->file_exists( \OCP\USER::getUser() . '/' . $directory ) || !$this->is_dir( \OCP\USER::getUser() . '/' . $directory ) ) {
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return false;
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} elseif( !$this->is_readable( \OCP\USER::getUser() . '/' . $directory ) ) {
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return false;
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} else {
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$directoryHandle = $this->opendir( \OCP\USER::getUser() . '/' . $directory );
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while ( $contents = readdir( $directoryHandle ) ) {
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if ( $contents != '.' && $contents != '..') {
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$path = $directory . "/" . $contents;
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if ( $this->is_dir( $path ) ) {
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deleteAll( $path );
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} else {
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$this->unlink( \OCP\USER::getUser() .'/' . $path ); // TODO: make unlink use same system path as is_dir
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}
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}
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}
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//$this->closedir( $directoryHandle ); // TODO: implement closedir in OC_FSV
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if ( $empty == false ) {
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if ( !$this->rmdir( $directory ) ) {
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return false;
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}
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}
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return true;
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}
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}
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public function getMimeType($path) {
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if(!$this->file_exists($path)) {
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return false;
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}
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if($this->is_dir($path)) {
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return 'httpd/unix-directory';
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}
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$source=$this->fopen($path, 'r');
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if(!$source) {
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return false;
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}
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$head=fread($source, 8192);//8kb should suffice to determine a mimetype
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if($pos=strrpos($path, '.')) {
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$extension=substr($path, $pos);
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}else{
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$extension='';
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}
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$tmpFile=OC_Helper::tmpFile($extension);
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file_put_contents($tmpFile, $head);
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$mime=OC_Helper::getMimeType($tmpFile);
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unlink($tmpFile);
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return $mime;
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}
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public function hash($type, $path, $raw = false) {
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$tmpFile=$this->getLocalFile();
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$hash=hash($type, $tmpFile, $raw);
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unlink($tmpFile);
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return $hash;
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}
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// abstract public function free_space($path);
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public function search($query) {
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return $this->searchInDir($query);
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}
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public function getLocalFile($path) {
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return $this->toTmpFile($path);
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}
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private function toTmpFile($path) {//no longer in the storage api, still usefull here
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$source=$this->fopen($path, 'r');
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if(!$source) {
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return false;
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}
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if($pos=strrpos($path, '.')) {
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$extension=substr($path, $pos);
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}else{
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$extension='';
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}
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$tmpFile=OC_Helper::tmpFile($extension);
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$target=fopen($tmpFile, 'w');
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OC_Helper::streamCopy($source, $target);
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return $tmpFile;
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}
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public function getLocalFolder($path) {
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$baseDir=OC_Helper::tmpFolder();
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$this->addLocalFolder($path, $baseDir);
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return $baseDir;
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}
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private function addLocalFolder($path, $target) {
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if($dh=$this->opendir($path)) {
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while($file=readdir($dh)) {
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if($file!=='.' and $file!=='..') {
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if($this->is_dir($path.'/'.$file)) {
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mkdir($target.'/'.$file);
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$this->addLocalFolder($path.'/'.$file, $target.'/'.$file);
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}else{
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$tmp=$this->toTmpFile($path.'/'.$file);
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rename($tmp, $target.'/'.$file);
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}
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}
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}
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}
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}
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// abstract public function touch($path, $mtime=null);
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protected function searchInDir($query, $dir='') {
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$files=array();
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$dh=$this->opendir($dir);
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if($dh) {
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while($item=readdir($dh)) {
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if ($item == '.' || $item == '..') continue;
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if(strstr(strtolower($item), strtolower($query))!==false) {
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$files[]=$dir.'/'.$item;
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}
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if($this->is_dir($dir.'/'.$item)) {
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$files=array_merge($files, $this->searchInDir($query, $dir.'/'.$item));
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}
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}
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}
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return $files;
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}
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/**
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* check if a file or folder has been updated since $time
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* @param int $time
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* @return bool
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*/
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public function hasUpdated($path, $time) {
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return $this->filemtime($path)>$time;
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}
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/**
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* get the owner of a path
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* @param $path The path to get the owner
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* @return string uid or false
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*/
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public function getOwner($path) {
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return OC_User::getUser();
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}
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}
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