355 Zeilen
11 KiB
PHP
355 Zeilen
11 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/**
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* @see Zend_Filter_Compress_CompressAbstract
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*/
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require_once 'Zend/Filter/Compress/CompressAbstract.php';
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/**
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* Compression adapter for zip
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*
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* @category Zend
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* @package Zend_Filter
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Filter_Compress_Zip extends Zend_Filter_Compress_CompressAbstract
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{
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/**
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* Compression Options
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* array(
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* 'archive' => Archive to use
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* 'password' => Password to use
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* 'target' => Target to write the files to
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* )
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*
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* @var array
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*/
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protected $_options = array(
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'archive' => null,
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'target' => null,
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);
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/**
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* Class constructor
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*
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* @param string|array $options (Optional) Options to set
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*/
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public function __construct($options = null)
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{
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if (!extension_loaded('zip')) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('This filter needs the zip extension');
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}
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parent::__construct($options);
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}
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/**
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* Returns the set archive
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*
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* @return string
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*/
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public function getArchive()
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{
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return $this->_options['archive'];
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}
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/**
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* Sets the archive to use for de-/compression
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*
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* @param string $archive Archive to use
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* @return Zend_Filter_Compress_Rar
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*/
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public function setArchive($archive)
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{
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$archive = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $archive);
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$this->_options['archive'] = (string) $archive;
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return $this;
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}
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/**
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* Returns the set targetpath
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*
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* @return string
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*/
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public function getTarget()
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{
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return $this->_options['target'];
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}
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/**
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* Sets the target to use
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*
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* @param string $target
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* @return Zend_Filter_Compress_Rar
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*/
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public function setTarget($target)
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{
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if (!file_exists(dirname($target))) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception("The directory '$target' does not exist");
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}
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$target = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $target);
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$this->_options['target'] = (string) $target;
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return $this;
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}
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/**
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* Compresses the given content
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*
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* @param string $content
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* @return string Compressed archive
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*/
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public function compress($content)
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{
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$zip = new ZipArchive();
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$res = $zip->open($this->getArchive(), ZipArchive::CREATE | ZipArchive::OVERWRITE);
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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if (file_exists($content)) {
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$content = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, realpath($content));
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$basename = substr($content, strrpos($content, DIRECTORY_SEPARATOR) + 1);
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if (is_dir($content)) {
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$index = strrpos($content, DIRECTORY_SEPARATOR) + 1;
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$content .= DIRECTORY_SEPARATOR;
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$stack = array($content);
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while (!empty($stack)) {
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$current = array_pop($stack);
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$files = array();
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$dir = dir($current);
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while (false !== ($node = $dir->read())) {
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if (($node == '.') || ($node == '..')) {
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continue;
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}
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if (is_dir($current . $node)) {
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array_push($stack, $current . $node . DIRECTORY_SEPARATOR);
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}
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if (is_file($current . $node)) {
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$files[] = $node;
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}
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}
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$local = substr($current, $index);
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$zip->addEmptyDir(substr($local, 0, -1));
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foreach ($files as $file) {
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$zip->addFile($current . $file, $local . $file);
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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}
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}
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} else {
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$res = $zip->addFile($content, $basename);
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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}
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} else {
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$file = $this->getTarget();
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if (!is_dir($file)) {
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$file = basename($file);
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} else {
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$file = "zip.tmp";
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}
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$res = $zip->addFromString($file, $content);
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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}
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$zip->close();
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return $this->_options['archive'];
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}
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/**
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* Decompresses the given content
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*
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* @param string $content
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* @return string
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*/
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public function decompress($content)
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{
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$archive = $this->getArchive();
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if (file_exists($content)) {
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$archive = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, realpath($content));
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} elseif (empty($archive) || !file_exists($archive)) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('ZIP Archive not found');
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}
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$zip = new ZipArchive();
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$res = $zip->open($archive);
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$target = $this->getTarget();
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if (!empty($target) && !is_dir($target)) {
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$target = dirname($target);
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}
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if (!empty($target)) {
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$target = rtrim($target, '/\\') . DIRECTORY_SEPARATOR;
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}
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if (empty($target) || !is_dir($target)) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('No target for ZIP decompression set');
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}
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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if (version_compare(PHP_VERSION, '5.2.8', '<')) {
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for ($i = 0; $i < $zip->numFiles; $i++) {
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$statIndex = $zip->statIndex($i);
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$currName = $statIndex['name'];
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if (($currName{0} == '/') ||
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(substr($currName, 0, 2) == '..') ||
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(substr($currName, 0, 4) == './..')
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)
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{
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception('Upward directory traversal was detected inside ' . $archive
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. ' please use PHP 5.2.8 or greater to take advantage of path resolution features of '
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. 'the zip extension in this decompress() method.'
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);
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}
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}
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}
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$res = @$zip->extractTo($target);
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if ($res !== true) {
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require_once 'Zend/Filter/Exception.php';
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throw new Zend_Filter_Exception($this->_errorString($res));
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}
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$zip->close();
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return $target;
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}
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/**
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* Returns the proper string based on the given error constant
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*
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* @param string $error
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*/
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protected function _errorString($error)
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{
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switch($error) {
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case ZipArchive::ER_MULTIDISK :
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return 'Multidisk ZIP Archives not supported';
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case ZipArchive::ER_RENAME :
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return 'Failed to rename the temporary file for ZIP';
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case ZipArchive::ER_CLOSE :
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return 'Failed to close the ZIP Archive';
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case ZipArchive::ER_SEEK :
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return 'Failure while seeking the ZIP Archive';
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case ZipArchive::ER_READ :
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return 'Failure while reading the ZIP Archive';
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case ZipArchive::ER_WRITE :
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return 'Failure while writing the ZIP Archive';
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case ZipArchive::ER_CRC :
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return 'CRC failure within the ZIP Archive';
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case ZipArchive::ER_ZIPCLOSED :
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return 'ZIP Archive already closed';
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case ZipArchive::ER_NOENT :
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return 'No such file within the ZIP Archive';
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case ZipArchive::ER_EXISTS :
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return 'ZIP Archive already exists';
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case ZipArchive::ER_OPEN :
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return 'Can not open ZIP Archive';
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case ZipArchive::ER_TMPOPEN :
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return 'Failure creating temporary ZIP Archive';
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case ZipArchive::ER_ZLIB :
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return 'ZLib Problem';
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case ZipArchive::ER_MEMORY :
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return 'Memory allocation problem while working on a ZIP Archive';
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case ZipArchive::ER_CHANGED :
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return 'ZIP Entry has been changed';
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case ZipArchive::ER_COMPNOTSUPP :
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return 'Compression method not supported within ZLib';
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case ZipArchive::ER_EOF :
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return 'Premature EOF within ZIP Archive';
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case ZipArchive::ER_INVAL :
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return 'Invalid argument for ZLIB';
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case ZipArchive::ER_NOZIP :
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return 'Given file is no zip archive';
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case ZipArchive::ER_INTERNAL :
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return 'Internal error while working on a ZIP Archive';
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case ZipArchive::ER_INCONS :
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return 'Inconsistent ZIP archive';
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case ZipArchive::ER_REMOVE :
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return 'Can not remove ZIP Archive';
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case ZipArchive::ER_DELETED :
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return 'ZIP Entry has been deleted';
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default :
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return 'Unknown error within ZIP Archive';
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}
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}
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/**
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* Returns the adapter name
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*
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* @return string
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*/
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public function toString()
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{
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return 'Zip';
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}
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}
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