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<?php
/**
* The Unzipper extracts .zip or .rar archives and .gz files on webservers.
* It's handy if you do not have shell access. E.g. if you want to upload a lot
* of files (php framework or image collection) as an archive to save time.
* As of version 0.1.0 it also supports creating archives.
*
* @author Andreas Tasch, at[tec], attec.at
* @license GNU GPL v3
* @package attec.toolbox
* @version 0.1.1
*/
define('VERSION', '0.1.1');
$timestart = microtime(TRUE);
$GLOBALS['status'] = array();
$unzipper = new Unzipper;
if (isset($_POST['dounzip'])) {
// Check if an archive was selected for unzipping.
$archive = isset($_POST['zipfile']) ? strip_tags($_POST['zipfile']) : '';
$destination = isset($_POST['extpath']) ? strip_tags($_POST['extpath']) : '';
$unzipper->prepareExtraction($archive, $destination);
}
if (isset($_POST['dozip'])) {
$zippath = !empty($_POST['zippath']) ? strip_tags($_POST['zippath']) : '.';
// Resulting zipfile e.g. zipper--2016-07-23--11-55.zip.
$zipfile = 'zipper-' . date("Y-m-d--H-i") . '.zip';
Zipper::zipDir($zippath, $zipfile);
}
$timeend = microtime(TRUE);
$time = round($timeend - $timestart, 4);
/**
* Class Unzipper
*/
class Unzipper {
public $localdir = '.';
public $zipfiles = array();
public function __construct() {
// Read directory and pick .zip, .rar and .gz files.
if ($dh = opendir($this->localdir)) {
while (($file = readdir($dh)) !== FALSE) {
if (pathinfo($file, PATHINFO_EXTENSION) === 'zip'
|| pathinfo($file, PATHINFO_EXTENSION) === 'gz'
|| pathinfo($file, PATHINFO_EXTENSION) === 'rar'
) {
$this->zipfiles[] = $file;
}
}
closedir($dh);
if (!empty($this->zipfiles)) {
$GLOBALS['status'] = array('info' => '.zip or .gz or .rar files found, ready for extraction');
}
else {
$GLOBALS['status'] = array('info' => 'No .zip or .gz or rar files found. So only zipping functionality available.');
}
}
}
/**
* Prepare and check zipfile for extraction.
*
* @param string $archive
* The archive name including file extension. E.g. my_archive.zip.
* @param string $destination
* The relative destination path where to extract files.
*/
public function prepareExtraction($archive, $destination = '') {
// Determine paths.
if (empty($destination)) {
$extpath = $this->localdir;
}
else {
$extpath = $this->localdir . '/' . $destination;
// Todo: move this to extraction function.
if (!is_dir($extpath)) {
mkdir($extpath);
}
}
// Only local existing archives are allowed to be extracted.
if (in_array($archive, $this->zipfiles)) {
self::extract($archive, $extpath);
}
}
/**
* Checks file extension and calls suitable extractor functions.
*
* @param string $archive
* The archive name including file extension. E.g. my_archive.zip.
* @param string $destination
* The relative destination path where to extract files.
*/
public static function extract($archive, $destination) {
$ext = pathinfo($archive, PATHINFO_EXTENSION);
switch ($ext) {
case 'zip':
self::extractZipArchive($archive, $destination);
break;
case 'gz':
self::extractGzipFile($archive, $destination);
break;
case 'rar':
self::extractRarArchive($archive, $destination);
break;
}
}
/**
* Decompress/extract a zip archive using ZipArchive.
*
* @param $archive
* @param $destination
*/
public static function extractZipArchive($archive, $destination) {
// Check if webserver supports unzipping.
if (!class_exists('ZipArchive')) {
$GLOBALS['status'] = array('error' => 'Error: Your PHP version does not support unzip functionality.');
return;
}
$zip = new ZipArchive;
// Check if archive is readable.
if ($zip->open($archive) === TRUE) {
// Check if destination is writable
if (is_writeable($destination . '/')) {
$zip->extractTo($destination);
$zip->close();
$GLOBALS['status'] = array('success' => 'Files unzipped successfully');
}
else {
$GLOBALS['status'] = array('error' => 'Error: Directory not writeable by webserver.');
}
}
else {
$GLOBALS['status'] = array('error' => 'Error: Cannot read .zip archive.');
}
}
/**
* Decompress a .gz File.
*
* @param string $archive
* The archive name including file extension. E.g. my_archive.zip.
* @param string $destination
* The relative destination path where to extract files.
*/
public static function extractGzipFile($archive, $destination) {
// Check if zlib is enabled
if (!function_exists('gzopen')) {
$GLOBALS['status'] = array('error' => 'Error: Your PHP has no zlib support enabled.');
return;
}
$filename = pathinfo($archive, PATHINFO_FILENAME);
$gzipped = gzopen($archive, "rb");
$file = fopen($destination . '/' . $filename, "w");
while ($string = gzread($gzipped, 4096)) {
fwrite($file, $string, strlen($string));
}
gzclose($gzipped);
fclose($file);
// Check if file was extracted.
if (file_exists($destination . '/' . $filename)) {
$GLOBALS['status'] = array('success' => 'File unzipped successfully.');
// If we had a tar.gz file, let's extract that tar file.
if (pathinfo($destination . '/' . $filename, PATHINFO_EXTENSION) == 'tar') {
$phar = new PharData($destination . '/' . $filename);
if ($phar->extractTo($destination)) {
$GLOBALS['status'] = array('success' => 'Extracted tar.gz archive successfully.');
// Delete .tar.
unlink($destination . '/' . $filename);
}
}
}
else {
$GLOBALS['status'] = array('error' => 'Error unzipping file.');
}
}
/**
* Decompress/extract a Rar archive using RarArchive.
*
* @param string $archive
* The archive name including file extension. E.g. my_archive.zip.
* @param string $destination
* The relative destination path where to extract files.
*/
public static function extractRarArchive($archive, $destination) {
// Check if webserver supports unzipping.
if (!class_exists('RarArchive')) {
$GLOBALS['status'] = array('error' => 'Error: Your PHP version does not support .rar archive functionality. <a class="info" href="http://php.net/manual/en/rar.installation.php" target="_blank">How to install RarArchive</a>');
return;
}
// Check if archive is readable.
if ($rar = RarArchive::open($archive)) {
// Check if destination is writable
if (is_writeable($destination . '/')) {
$entries = $rar->getEntries();
foreach ($entries as $entry) {
$entry->extract($destination);
}
$rar->close();
$GLOBALS['status'] = array('success' => 'Files extracted successfully.');
}
else {
$GLOBALS['status'] = array('error' => 'Error: Directory not writeable by webserver.');
}
}
else {
$GLOBALS['status'] = array('error' => 'Error: Cannot read .rar archive.');
}
}
}
/**
* Class Zipper
*
* Copied and slightly modified from http://at2.php.net/manual/en/class.ziparchive.php#110719
* @author umbalaconmeogia
*/
class Zipper {
/**
* Add files and sub-directories in a folder to zip file.
*
* @param string $folder
* Path to folder that should be zipped.
*
* @param ZipArchive $zipFile
* Zipfile where files end up.
*
* @param int $exclusiveLength
* Number of text to be exclusived from the file path.
*/
private static function folderToZip($folder, &$zipFile, $exclusiveLength) {
$handle = opendir($folder);
while (FALSE !== $f = readdir($handle)) {
// Check for local/parent path or zipping file itself and skip.
if ($f != '.' && $f != '..' && $f != basename(__FILE__)) {
$filePath = "$folder/$f";
// Remove prefix from file path before add to zip.
$localPath = substr($filePath, $exclusiveLength);
if (is_file($filePath)) {
$zipFile->addFile($filePath, $localPath);
}
elseif (is_dir($filePath)) {
// Add sub-directory.
$zipFile->addEmptyDir($localPath);
self::folderToZip($filePath, $zipFile, $exclusiveLength);
}
}
}
closedir($handle);
}
/**
* Zip a folder (including itself).
*
* Usage:
* Zipper::zipDir('path/to/sourceDir', 'path/to/out.zip');
*
* @param string $sourcePath
* Relative path of directory to be zipped.
*
* @param string $outZipPath
* Relative path of the resulting output zip file.
*/
public static function zipDir($sourcePath, $outZipPath) {
$pathInfo = pathinfo($sourcePath);
$parentPath = $pathInfo['dirname'];
$dirName = $pathInfo['basename'];
$z = new ZipArchive();
$z->open($outZipPath, ZipArchive::CREATE);
$z->addEmptyDir($dirName);
if ($sourcePath == $dirName) {
self::folderToZip($sourcePath, $z, 0);
}
else {
self::folderToZip($sourcePath, $z, strlen("$parentPath/"));
}
$z->close();
$GLOBALS['status'] = array('success' => 'Successfully created archive ' . $outZipPath);
}
}
?>
<!DOCTYPE html>
<html>
<head>
<title>File Unzipper + Zipper</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<style type="text/css">
<!--
body {
font-family: Arial, sans-serif;
line-height: 150%;
}
label {
display: block;
margin-top: 20px;
}
fieldset {
border: 0;
background-color: #EEE;
margin: 10px 0 10px 0;
}
.select {
padding: 5px;
font-size: 110%;
}
.status {
margin: 0;
margin-bottom: 20px;
padding: 10px;
font-size: 80%;
background: #EEE;
border: 1px dotted #DDD;
}
.status--ERROR {
background-color: red;
color: white;
font-size: 120%;
}
.status--SUCCESS {
background-color: green;
font-weight: bold;
color: white;
font-size: 120%
}
.small {
font-size: 0.7rem;
font-weight: normal;
}
.version {
font-size: 80%;
}
.form-field {
border: 1px solid #AAA;
padding: 8px;
width: 280px;
}
.info {
margin-top: 0;
font-size: 80%;
color: #777;
}
.submit {
background-color: #378de5;
border: 0;
color: #ffffff;
font-size: 15px;
padding: 10px 24px;
margin: 20px 0 20px 0;
text-decoration: none;
}
.submit:hover {
background-color: #2c6db2;
cursor: pointer;
}
-->
</style>
</head>
<body>
<p class="status status--<?php echo strtoupper(key($GLOBALS['status'])); ?>">
Status: <?php echo reset($GLOBALS['status']); ?><br/>
<span class="small">Processing Time: <?php echo $time; ?> seconds</span>
</p>
<form action="" method="POST">
<fieldset>
<h1>Archive Unzipper</h1>
<label for="zipfile">Select .zip or .rar archive or .gz file you want to extract:</label>
<select name="zipfile" size="1" class="select">
<?php foreach ($unzipper->zipfiles as $zip) {
echo "<option>$zip</option>";
}
?>
</select>
<label for="extpath">Extraction path (optional):</label>
<input type="text" name="extpath" class="form-field" />
<p class="info">Enter extraction path without leading or trailing slashes (e.g. "mypath"). If left empty current directory will be used.</p>
<input type="submit" name="dounzip" class="submit" value="Unzip Archive"/>
</fieldset>
<fieldset>
<h1>Archive Zipper</h1>
<label for="zippath">Path that should be zipped (optional):</label>
<input type="text" name="zippath" class="form-field" />
<p class="info">Enter path to be zipped without leading or trailing slashes (e.g. "zippath"). If left empty current directory will be used.</p>
<input type="submit" name="dozip" class="submit" value="Zip Archive"/>
</fieldset>
</form>
<p class="version">Unzipper version: <?php echo VERSION; ?></p>
</body>
</html>