132 lines
3.9 KiB
PHP
132 lines
3.9 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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*
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* @author Joas Schilling <coding@schilljs.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Victor Dubiniuk <dubiniuk@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program 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 License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC;
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use ownCloud\TarStreamer\TarStreamer;
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use ZipStreamer\ZipStreamer;
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class Streamer {
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// array of regexp. Matching user agents will get tar instead of zip
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private $preferTarFor = [ '/macintosh|mac os x/i' ];
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// streamer instance
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private $streamerInstance;
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public function __construct(){
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/** @var \OCP\IRequest */
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$request = \OC::$server->getRequest();
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if ($request->isUserAgent($this->preferTarFor)) {
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$this->streamerInstance = new TarStreamer();
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} else {
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$this->streamerInstance = new ZipStreamer(['zip64' => PHP_INT_SIZE !== 4]);
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}
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}
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/**
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* Send HTTP headers
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* @param string $name
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*/
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public function sendHeaders($name){
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$extension = $this->streamerInstance instanceof ZipStreamer ? '.zip' : '.tar';
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$fullName = $name . $extension;
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$this->streamerInstance->sendHeaders($fullName);
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}
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/**
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* Stream directory recursively
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* @param string $dir
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* @param string $internalDir
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*/
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public function addDirRecursive($dir, $internalDir='') {
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$dirname = basename($dir);
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$rootDir = $internalDir . $dirname;
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if (!empty($rootDir)) {
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$this->streamerInstance->addEmptyDir($rootDir);
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}
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$internalDir .= $dirname . '/';
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// prevent absolute dirs
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$internalDir = ltrim($internalDir, '/');
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$files= \OC\Files\Filesystem::getDirectoryContent($dir);
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foreach($files as $file) {
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$filename = $file['name'];
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$file = $dir . '/' . $filename;
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if(\OC\Files\Filesystem::is_file($file)) {
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$filesize = \OC\Files\Filesystem::filesize($file);
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$fileTime = \OC\Files\Filesystem::filemtime($file);
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$fh = \OC\Files\Filesystem::fopen($file, 'r');
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$this->addFileFromStream($fh, $internalDir . $filename, $filesize, $fileTime);
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fclose($fh);
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}elseif(\OC\Files\Filesystem::is_dir($file)) {
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$this->addDirRecursive($file, $internalDir);
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}
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}
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}
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/**
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* Add a file to the archive at the specified location and file name.
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*
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* @param string $stream Stream to read data from
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* @param string $internalName Filepath and name to be used in the archive.
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* @param int $size Filesize
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* @param int|bool $time File mtime as int, or false
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* @return bool $success
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*/
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public function addFileFromStream($stream, $internalName, $size, $time) {
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$options = [];
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if ($time) {
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$options = [
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'timestamp' => $time
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];
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}
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if ($this->streamerInstance instanceof ZipStreamer) {
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return $this->streamerInstance->addFileFromStream($stream, $internalName, $options);
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} else {
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return $this->streamerInstance->addFileFromStream($stream, $internalName, $size, $options);
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}
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}
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/**
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* Add an empty directory entry to the archive.
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*
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* @param string $dirName Directory Path and name to be added to the archive.
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* @return bool $success
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*/
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public function addEmptyDir($dirName){
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return $this->streamerInstance->addEmptyDir($dirName);
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}
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/**
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* Close the archive.
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* A closed archive can no longer have new files added to it. After
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* closing, the file is completely written to the output stream.
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* @return bool $success
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*/
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public function finalize(){
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return $this->streamerInstance->finalize();
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}
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}
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