<?php
/*--------------------------------------------------
| TAR/GZIP/BZIP2/ZIP ARCHIVE CLASSES 2.1
| By Devin Doucette
| Copyright (c) 2005 Devin Doucette
| Email: darksnoopy@shaw.ca
+--------------------------------------------------
| Email bugs/suggestions to darksnoopy@shaw.ca
+--------------------------------------------------
| This script has been created and released under
| the GNU GPL and is free to use and redistribute
| only if this copyright statement is not removed
+--------------------------------------------------*/
class archive
{
public function archive($name)
{
$this->options = array(
'basedir' => ".",
'name' => $name,
'prepend' => "",
'inmemory' => 0,
'overwrite' => 0,
'recurse' => 1,
'storepaths' => 1,
'followlinks' => 0,
'level' => 3,
'method' => 1,
'sfx' => "",
'type' => "",
'comment' => ""
);
$this->files = array();
$this->exclude = array();
$this->storeonly = array();
$this->error = array();
}
public function set_options($options)
{
foreach ($options as $key => $value) {
$this->options[$key] = $value;
}
if (!empty($this->options['basedir'])) {
$this->options['basedir'] = str_replace("\\", "/", $this->options['basedir']);
$this->options['basedir'] = preg_replace("/\/+/", "/", $this->options['basedir']);
$this->options['basedir'] = preg_replace("/\/$/", "", $this->options['basedir']);
}
if (!empty($this->options['name'])) {
$this->options['name'] = str_replace("\\", "/", $this->options['name']);
$this->options['name'] = preg_replace("/\/+/", "/", $this->options['name']);
}
if (!empty($this->options['prepend'])) {
$this->options['prepend'] = str_replace("\\", "/", $this->options['prepend']);
$this->options['prepend'] = preg_replace("/^(\.*\/+)+/", "", $this->options['prepend']);
$this->options['prepend'] = preg_replace("/\/+/", "/", $this->options['prepend']);
$this->options['prepend'] = preg_replace("/\/$/", "", $this->options['prepend']) . "/";
}
}
public function create_archive()
{
$this->make_list();
if ($this->options['inmemory'] == 0) {
$pwd = getcwd();
chdir($this->options['basedir']);
if ($this->options['overwrite'] == 0 && file_exists($this->options['name'] . ($this->options['type'] == "gzip" || $this->options['type'] == "bzip" ? ".tmp" : ""))) {
$this->error[] = "File {$this->options['name']} already exists.";
chdir($pwd);
return 0;
} elseif ($this->archive = @fopen($this->options['name'] . ($this->options['type'] == "gzip" || $this->options['type'] == "bzip" ? ".tmp" : ""), "wb+")) {
chdir($pwd);
} else {
$this->error[] = "Could not open {$this->options['name']} for writing.";
chdir($pwd);
return 0;
}
} else {
$this->archive = "";
}
switch ($this->options['type']) {
case "zip":
if (!$this->create_zip()) {
$this->error[] = "Could not create zip file.";
return 0;
}
break;
case "bzip":
if (!$this->create_tar()) {
$this->error[] = "Could not create tar file.";
return 0;
}
if (!$this->create_bzip()) {
$this->error[] = "Could not create bzip2 file.";
return 0;
}
break;
case "gzip":
if (!$this->create_tar()) {
$this->error[] = "Could not create tar file.";
return 0;
}
if (!$this->create_gzip()) {
$this->error[] = "Could not create gzip file.";
return 0;
}
break;
case "tar":
if (!$this->create_tar()) {
$this->error[] = "Could not create tar file.";
return 0;
}
}
if ($this->options['inmemory'] == 0) {
fclose($this->archive);
if ($this->options['type'] == "gzip" || $this->options['type'] == "bzip") {
unlink($this->options['basedir'] . "/" . $this->options['name'] . ".tmp");
}
}
}
public function add_data($data)
{
if ($this->options['inmemory'] == 0) {
fwrite($this->archive, $data);
} else {
$this->archive .= $data;
}
}
public function make_list()
{
if (!empty($this->exclude)) {
foreach ($this->files as $key => $value) {
foreach ($this->exclude as $current) {
if ($value['name'] == $current['name']) {
unset($this->files[$key]);
}
}
}
}
if (!empty($this->storeonly)) {
foreach ($this->files as $key => $value) {
foreach ($this->storeonly as $current) {
if ($value['name'] == $current['name']) {
$this->files[$key]['method'] = 0;
}
}
}
}
unset($this->exclude, $this->storeonly);
}
public function add_files($list)
{
$temp = $this->list_files($list);
foreach ($temp as $current) {
$this->files[] = $current;
}
}
public function exclude_files($list)
{
$temp = $this->list_files($list);
foreach ($temp as $current) {
$this->exclude[] = $current;
}
}
public function store_files($list)
{
$temp = $this->list_files($list);
foreach ($temp as $current) {
$this->storeonly[] = $current;
}
}
public function list_files($list)
{
if (!is_array($list)) {
$temp = $list;
$list = array($temp);
unset($temp);
}
$files = array();
$pwd = getcwd();
chdir($this->options['basedir']);
foreach ($list as $current) {
$current = str_replace("\\", "/", $current);
$current = preg_replace("/\/+/", "/", $current);
$current = preg_replace("/\/$/", "", $current);
if (strstr($current, "*")) {
$regex = preg_replace("/([\\\^\$\.\[\]\|\(\)\?\+\{\}\/])/", "\\\\\\1", $current);
$regex = str_replace("*", ".*", $regex);
$dir = strstr($current, "/") ? substr($current, 0, strrpos($current, "/")) : ".";
$temp = $this->parse_dir($dir);
foreach ($temp as $current2) {
if (preg_match("/^{$regex}$/i", $current2['name'])) {
$files[] = $current2;
}
}
unset($regex, $dir, $temp, $current);
} elseif (@is_dir($current)) {
$temp = $this->parse_dir($current);
foreach ($temp as $file) {
$files[] = $file;
}
unset($temp, $file);
} elseif (@file_exists($current)) {
$files[] = array('name' => $current, 'name2' => $this->options['prepend'] .
preg_replace("/(\.+\/+)+/", "", ($this->options['storepaths'] == 0 && strstr($current, "/")) ?
substr($current, strrpos($current, "/") + 1) : $current),
'type' => @is_link($current) && $this->options['followlinks'] == 0 ? 2 : 0,
'ext' => substr($current, strrpos($current, ".")), 'stat' => stat($current));
}
}
chdir($pwd);
unset($current, $pwd);
usort($files, array("archive", "sort_files"));
return $files;
}
public function parse_dir($dirname)
{
if ($this->options['storepaths'] == 1 && !preg_match("/^(\.+\/*)+$/", $dirname)) {
$files = array(array('name' => $dirname, 'name2' => $this->options['prepend'] .
preg_replace("/(\.+\/+)+/", "", ($this->options['storepaths'] == 0 && strstr($dirname, "/")) ?
substr($dirname, strrpos($dirname, "/") + 1) : $dirname), 'type' => 5, 'stat' => stat($dirname)));
} else {
$files = array();
}
$dir = @opendir($dirname);
while ($file = @readdir($dir)) {
$fullname = $dirname . "/" . $file;
if ($file == "." || $file == "..") {
continue;
} elseif (@is_dir($fullname)) {
if (empty($this->options['recurse'])) {
continue;
}
$temp = $this->parse_dir($fullname);
foreach ($temp as $file2) {
$files[] = $file2;
}
} elseif (@file_exists($fullname)) {
$files[] = array('name' => $fullname, 'name2' => $this->options['prepend'] .
preg_replace("/(\.+\/+)+/", "", ($this->options['storepaths'] == 0 && strstr($fullname, "/")) ?
substr($fullname, strrpos($fullname, "/") + 1) : $fullname),
'type' => @is_link($fullname) && $this->options['followlinks'] == 0 ? 2 : 0,
'ext' => substr($file, strrpos($file, ".")), 'stat' => stat($fullname));
}
}
@closedir($dir);
return $files;
}
public function sort_files($a, $b)
{
if ($a['type'] != $b['type']) {
if ($a['type'] == 5 || $b['type'] == 2) {
return -1;
} elseif ($a['type'] == 2 || $b['type'] == 5) {
return 1;
} elseif ($a['type'] == 5) {
return strcmp(strtolower($a['name']), strtolower($b['name']));
} elseif ($a['ext'] != $b['ext']) {
return strcmp($a['ext'], $b['ext']);
} elseif ($a['stat'][7] != $b['stat'][7]) {
return $a['stat'][7] > $b['stat'][7] ? -1 : 1;
} else {
return strcmp(strtolower($a['name']), strtolower($b['name']));
}
}
return 0;
}
public function download_file()
{
if ($this->options['inmemory'] == 0) {
$this->error[] = "Can only use download_file() if archive is in memory. Redirect to file otherwise, it is faster.";
return;
}
switch ($this->options['type']) {
case "zip":
header("Content-Type: application/zip");
break;
case "bzip":
header("Content-Type: application/x-bzip2");
break;
case "gzip":
header("Content-Type: application/x-gzip");
break;
case "tar":
header("Content-Type: application/x-tar");
}
$header = "Content-Disposition: attachment; filename=\"";
$header .= strstr($this->options['name'], "/") ? substr($this->options['name'], strrpos($this->options['name'], "/") + 1) : $this->options['name'];
$header .= "\"";
header($header);
header("Content-Length: " . strlen($this->archive));
header("Content-Transfer-Encoding: binary");
header("Cache-Control: no-cache, must-revalidate, max-age=60");
header("Expires: Sat, 01 Jan 2000 12:00:00 GMT");
print($this->archive);
}
}
class tar_file extends archive
{
public function tar_file($name)
{
$this->archive($name);
$this->options['type'] = "tar";
}
public function create_tar()
{
$pwd = getcwd();
chdir($this->options['basedir']);
foreach ($this->files as $current) {
if ($current['name'] == $this->options['name']) {
continue;
}
if (strlen($current['name2']) > 99) {
$path = substr($current['name2'], 0, strpos($current['name2'], "/", strlen($current['name2']) - 100) + 1);
$current['name2'] = substr($current['name2'], strlen($path));
if (strlen($path) > 154 || strlen($current['name2']) > 99) {
$this->error[] = "Could not add {$path}{$current['name2']} to archive because the filename is too long.";
continue;
}
}
$block = pack(
"a100a8a8a8a12a12a8a1a100a6a2a32a32a8a8a155a12",
$current['name2'],
sprintf(
"%07o",
$current['stat'][2]
),
sprintf("%07o", $current['stat'][4]),
sprintf("%07o", $current['stat'][5]),
sprintf("%011o", $current['type'] == 2 ? 0 : $current['stat'][7]),
sprintf("%011o", $current['stat'][9]),
" ",
$current['type'],
$current['type'] == 2 ? @readlink($current['name']) : "",
"ustar ",
" ",
"Unknown",
"Unknown",
"",
"",
!empty($path) ? $path : "",
""
);
$checksum = 0;
for ($i = 0; $i < 512; $i++) {
$checksum += ord(substr($block, $i, 1));
}
$checksum = pack("a8", sprintf("%07o", $checksum));
$block = substr_replace($block, $checksum, 148, 8);
if ($current['type'] == 2 || $current['stat'][7] == 0) {
$this->add_data($block);
} elseif ($fp = @fopen($current['name'], "rb")) {
$this->add_data($block);
while ($temp = fread($fp, 1048576)) {
$this->add_data($temp);
}
if ($current['stat'][7] % 512 > 0) {
$temp = "";
for ($i = 0; $i < 512 - $current['stat'][7] % 512; $i++) {
$temp .= "\0";
}
$this->add_data($temp);
}
fclose($fp);
} else {
$this->error[] = "Could not open file {$current['name']} for reading. It was not added.";
}
}
$this->add_data(pack("a1024", ""));
chdir($pwd);
return 1;
}
public function extract_files()
{
$pwd = getcwd();
chdir($this->options['basedir']);
if ($fp = $this->open_archive()) {
if ($this->options['inmemory'] == 1) {
$this->files = array();
}
while ($block = fread($fp, 512)) {
$temp = unpack("a100name/a8mode/a8uid/a8gid/a12size/a12mtime/a8checksum/a1type/a100symlink/a6magic/a2temp/a32temp/a32temp/a8temp/a8temp/a155prefix/a12temp", $block);
$file = array(
'name' => $temp['prefix'] . $temp['name'],
'stat' => array(
2 => $temp['mode'],
4 => octdec($temp['uid']),
5 => octdec($temp['gid']),
7 => octdec($temp['size']),
9 => octdec($temp['mtime']),
),
'checksum' => octdec($temp['checksum']),
'type' => $temp['type'],
'magic' => $temp['magic'],
);
if ($file['checksum'] == 0x00000000) {
break;
} elseif (substr($file['magic'], 0, 5) != "ustar") {
$this->error[] = "This script does not support extracting this type of tar file.";
break;
}
$block = substr_replace($block, " ", 148, 8);
$checksum = 0;
for ($i = 0; $i < 512; $i++) {
$checksum += ord(substr($block, $i, 1));
}
if ($file['checksum'] != $checksum) {
$this->error[] = "Could not extract from {$this->options['name']}, it is corrupt.";
}
if ($this->options['inmemory'] == 1) {
$file['data'] = fread($fp, $file['stat'][7]);
fread($fp, (512 - $file['stat'][7] % 512) == 512 ? 0 : (512 - $file['stat'][7] % 512));
unset($file['checksum'], $file['magic']);
$this->files[] = $file;
} elseif ($file['type'] == 5) {
if (!is_dir($file['name'])) {
mkdir($file['name'], $file['stat'][2]);
}
} elseif ($this->options['overwrite'] == 0 && file_exists($file['name'])) {
$this->error[] = "{$file['name']} already exists.";
continue;
} elseif ($file['type'] == 2) {
symlink($temp['symlink'], $file['name']);
chmod($file['name'], $file['stat'][2]);
} elseif ($new = @fopen($file['name'], "wb")) {
fwrite($new, fread($fp, $file['stat'][7]));
fread($fp, (512 - $file['stat'][7] % 512) == 512 ? 0 : (512 - $file['stat'][7] % 512));
fclose($new);
chmod($file['name'], $file['stat'][2]);
} else {
$this->error[] = "Could not open {$file['name']} for writing.";
continue;
}
chown($file['name'], $file['stat'][4]);
chgrp($file['name'], $file['stat'][5]);
touch($file['name'], $file['stat'][9]);
unset($file);
}
} else {
$this->error[] = "Could not open file {$this->options['name']}";
}
chdir($pwd);
}
public function open_archive()
{
return @fopen($this->options['name'], "rb");
}
}
class gzip_file extends tar_file
{
public function gzip_file($name)
{
$this->tar_file($name);
$this->options['type'] = "gzip";
}
public function create_gzip()
{
if ($this->options['inmemory'] == 0) {
$pwd = getcwd();
chdir($this->options['basedir']);
if ($fp = gzopen($this->options['name'], "wb{$this->options['level']}")) {
fseek($this->archive, 0);
while ($temp = fread($this->archive, 1048576)) {
gzwrite($fp, $temp);
}
gzclose($fp);
chdir($pwd);
} else {
$this->error[] = "Could not open {$this->options['name']} for writing.";
chdir($pwd);
return 0;
}
} else {
$this->archive = gzencode($this->archive, $this->options['level']);
}
return 1;
}
public function open_archive()
{
return @gzopen($this->options['name'], "rb");
}
}
class bzip_file extends tar_file
{
public function bzip_file($name)
{
$this->tar_file($name);
$this->options['type'] = "bzip";
}
public function create_bzip()
{
if ($this->options['inmemory'] == 0) {
$pwd = getcwd();
chdir($this->options['basedir']);
if ($fp = bzopen($this->options['name'], "wb")) {
fseek($this->archive, 0);
while ($temp = fread($this->archive, 1048576)) {
bzwrite($fp, $temp);
}
bzclose($fp);
chdir($pwd);
} else {
$this->error[] = "Could not open {$this->options['name']} for writing.";
chdir($pwd);
return 0;
}
} else {
$this->archive = bzcompress($this->archive, $this->options['level']);
}
return 1;
}
public function open_archive()
{
return @bzopen($this->options['name'], "rb");
}
}
class zip_file extends archive
{
public function zip_file($name)
{
$this->archive($name);
$this->options['type'] = "zip";
}
public function create_zip()
{
$files = 0;
$offset = 0;
$central = "";
if (!empty($this->options['sfx'])) {
if ($fp = @fopen($this->options['sfx'], "rb")) {
$temp = fread($fp, filesize($this->options['sfx']));
fclose($fp);
$this->add_data($temp);
$offset += strlen($temp);
unset($temp);
} else {
$this->error[] = "Could not open sfx module from {$this->options['sfx']}.";
}
}
$pwd = getcwd();
chdir($this->options['basedir']);
foreach ($this->files as $current) {
if ($current['name'] == $this->options['name']) {
continue;
}
$timedate = explode(" ", date("Y n j G i s", $current['stat'][9]));
$timedate = ($timedate[0] - 1980 << 25) | ($timedate[1] << 21) | ($timedate[2] << 16) |
($timedate[3] << 11) | ($timedate[4] << 5) | ($timedate[5]);
$block = pack("VvvvV", 0x04034b50, 0x000A, 0x0000, (isset($current['method']) || $this->options['method'] == 0) ? 0x0000 : 0x0008, $timedate);
if ($current['stat'][7] == 0 && $current['type'] == 5) {
$block .= pack("VVVvv", 0x00000000, 0x00000000, 0x00000000, strlen($current['name2']) + 1, 0x0000);
$block .= $current['name2'] . "/";
$this->add_data($block);
$central .= pack(
"VvvvvVVVVvvvvvVV",
0x02014b50,
0x0014,
$this->options['method'] == 0 ? 0x0000 : 0x000A,
0x0000,
(isset($current['method']) || $this->options['method'] == 0) ? 0x0000 : 0x0008,
$timedate,
0x00000000,
0x00000000,
0x00000000,
strlen($current['name2']) + 1,
0x0000,
0x0000,
0x0000,
0x0000,
$current['type'] == 5 ? 0x00000010 : 0x00000000,
$offset
);
$central .= $current['name2'] . "/";
$files++;
$offset += (31 + strlen($current['name2']));
} elseif ($current['stat'][7] == 0) {
$block .= pack("VVVvv", 0x00000000, 0x00000000, 0x00000000, strlen($current['name2']), 0x0000);
$block .= $current['name2'];
$this->add_data($block);
$central .= pack(
"VvvvvVVVVvvvvvVV",
0x02014b50,
0x0014,
$this->options['method'] == 0 ? 0x0000 : 0x000A,
0x0000,
(isset($current['method']) || $this->options['method'] == 0) ? 0x0000 : 0x0008,
$timedate,
0x00000000,
0x00000000,
0x00000000,
strlen($current['name2']),
0x0000,
0x0000,
0x0000,
0x0000,
$current['type'] == 5 ? 0x00000010 : 0x00000000,
$offset
);
$central .= $current['name2'];
$files++;
$offset += (30 + strlen($current['name2']));
} elseif ($fp = @fopen($current['name'], "rb")) {
$temp = fread($fp, $current['stat'][7]);
fclose($fp);
$crc32 = crc32($temp);
if (!isset($current['method']) && $this->options['method'] == 1) {
$temp = gzcompress($temp, $this->options['level']);
$size = strlen($temp) - 6;
$temp = substr($temp, 2, $size);
} else {
$size = strlen($temp);
}
$block .= pack("VVVvv", $crc32, $size, $current['stat'][7], strlen($current['name2']), 0x0000);
$block .= $current['name2'];
$this->add_data($block);
$this->add_data($temp);
unset($temp);
$central .= pack(
"VvvvvVVVVvvvvvVV",
0x02014b50,
0x0014,
$this->options['method'] == 0 ? 0x0000 : 0x000A,
0x0000,
(isset($current['method']) || $this->options['method'] == 0) ? 0x0000 : 0x0008,
$timedate,
$crc32,
$size,
$current['stat'][7],
strlen($current['name2']),
0x0000,
0x0000,
0x0000,
0x0000,
0x00000000,
$offset
);
$central .= $current['name2'];
$files++;
$offset += (30 + strlen($current['name2']) + $size);
} else {
$this->error[] = "Could not open file {$current['name']} for reading. It was not added.";
}
}
$this->add_data($central);
$this->add_data(pack(
"VvvvvVVv",
0x06054b50,
0x0000,
0x0000,
$files,
$files,
strlen($central),
$offset,
!empty($this->options['comment']) ? strlen($this->options['comment']) : 0x0000
));
if (!empty($this->options['comment'])) {
$this->add_data($this->options['comment']);
}
chdir($pwd);
return 1;
}
}
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