Файл: sys/classes/Archive_Tar.class.php
Строк: 874
<?php
define('ARCHIVE_TAR_ATT_SEPARATOR', 90001);
define('ARCHIVE_TAR_END_BLOCK', pack('a512', ''));
class Archive_Tar extends PEAR {
var $_tarname = '';
var $_compress = false;
var $_compress_type = 'none';
var $_separator = ' ';
var $_file = 0;
var $_temp_tarname = '';
function Archive_Tar($p_tarname, $p_compress = null) {
$this->PEAR();
$this->_compress = false;
$this->_compress_type = 'none';
if (($p_compress === null) || ($p_compress == '')) {
if (file_exists($p_tarname)) {
if ($fp = @fopen($p_tarname, "rb")) {
$data = fread($fp, 2);
fclose($fp);
if ($data == "37213") {
$this->_compress = true;
$this->_compress_type = 'gz';
} elseif ($data == "BZ") {
$this->_compress = true;
$this->_compress_type = 'bz2';
}
}
} else {
if (substr($p_tarname, -2) == 'gz') {
$this->_compress = true;
$this->_compress_type = 'gz';
} elseif ((substr($p_tarname, -3) == 'bz2') ||
(substr($p_tarname, -2) == 'bz')) {
$this->_compress = true;
$this->_compress_type = 'bz2';
}
}
} else {
if (($p_compress === true) || ($p_compress == 'gz')) {
$this->_compress = true;
$this->_compress_type = 'gz';
} else if ($p_compress == 'bz2') {
$this->_compress = true;
$this->_compress_type = 'bz2';
} else {
die("Unsupported compression type '$p_compress'n" .
"Supported types are 'gz' and 'bz2'.n");
return false;
}
}
$this->_tarname = $p_tarname;
if ($this->_compress) {
if ($this->_compress_type == 'gz') {
$extname = 'zlib';
} else if ($this->_compress_type == 'bz2') {
$extname = 'bz2';
}
if (!extension_loaded($extname)) {
PEAR::loadExtension($extname);
}
if (!extension_loaded($extname)) {
die("The extension '$extname' couldn't be found.n" .
"Please make sure your version of PHP was built " .
"with '$extname' support.n");
return false;
}
}
}
function _Archive_Tar() {
$this->_close();
if ($this->_temp_tarname != '') {
@unlink($this->_temp_tarname);
}
$this->_PEAR();
}
function create($p_filelist) {
return $this->createModify($p_filelist, '', '');
}
function add($p_filelist) {
return $this->addModify($p_filelist, '', '');
}
function extract($p_path = '') {
return $this->extractModify($p_path, '');
}
function listContent() {
$v_list_detail = array();
if ($this->_openRead()) {
if (!$this->_extractList('', $v_list_detail, "list", '', '')) {
unset($v_list_detail);
$v_list_detail = 0;
}
$this->_close();
}
return $v_list_detail;
}
function createModify($p_filelist, $p_add_dir, $p_remove_dir = '') {
$v_result = true;
if (!$this->_openWrite()) {
return false;
}
if ($p_filelist != '') {
if (is_array($p_filelist)) {
$v_list = $p_filelist;
} elseif (is_string($p_filelist))
$v_list = explode($this->_separator, $p_filelist);
else {
$this->_cleanFile();
$this->_error('Invalid file list');
return false;
}
$v_result = $this->_addList($v_list, $p_add_dir, $p_remove_dir);
}
if ($v_result) {
$this->_writeFooter();
$this->_close();
} else {
$this->_cleanFile();
}
return $v_result;
}
function addModify($p_filelist, $p_add_dir, $p_remove_dir = '') {
$v_result = true;
if (!$this->_isArchive()) {
$v_result = $this->createModify($p_filelist, $p_add_dir, $p_remove_dir);
} else {
if (is_array($p_filelist))
$v_list = $p_filelist;
elseif (is_string($p_filelist))
$v_list = explode($this->_separator, $p_filelist);
else {
$this->_error('Invalid file list');
return false;
}
$v_result = $this->_append($v_list, $p_add_dir, $p_remove_dir);
}
return $v_result;
}
function addString($p_filename, $p_string) {
$v_result = true;
if (!$this->_isArchive()) {
if (!$this->_openWrite()) {
return false;
}
$this->_close();
}
if (!$this->_openAppend()) {
return false;
}
$v_result = $this->_addString($p_filename, $p_string);
$this->_writeFooter();
$this->_close();
return $v_result;
}
function extractModify($p_path, $p_remove_path) {
$v_result = true;
$v_list_detail = array();
if ($v_result = $this->_openRead()) {
$v_result = $this->_extractList($p_path, $v_list_detail, "complete", 0, $p_remove_path);
$this->_close();
}
return $v_result;
}
function extractInString($p_filename) {
if ($this->_openRead()) {
$v_result = $this->_extractInString($p_filename);
$this->_close();
} else {
$v_result = NULL;
}
return $v_result;
}
function extractList($p_filelist, $p_path = '', $p_remove_path = '') {
$v_result = true;
$v_list_detail = array();
if (is_array($p_filelist)) {
$v_list = $p_filelist;
} elseif (is_string($p_filelist))
$v_list = explode($this->_separator, $p_filelist);
else {
$this->_error('Invalid string list');
return false;
}
if ($v_result = $this->_openRead()) {
$v_result = $this->_extractList($p_path, $v_list_detail, "partial", $v_list, $p_remove_path);
$this->_close();
}
return $v_result;
}
function setAttribute() {
$v_result = true;
if (($v_size = func_num_args()) == 0) {
return true;
}
$v_att_list = &func_get_args();
$i = 0;
while ($i < $v_size) {
switch ($v_att_list[$i]) {
case ARCHIVE_TAR_ATT_SEPARATOR :
if (($i + 1) >= $v_size) {
$this->_error('Invalid number of parameters for '
. 'attribute ARCHIVE_TAR_ATT_SEPARATOR');
return false;
}
$this->_separator = $v_att_list[$i + 1];
$i++;
break;
default :
$this->_error('Unknow attribute code ' . $v_att_list[$i] . '');
return false;
}
$i++;
}
return $v_result;
}
function _error($p_message) {
$this->raiseError($p_message);
}
function _warning($p_message) {
$this->raiseError($p_message);
}
function _isArchive($p_filename = NULL) {
if ($p_filename == NULL) {
$p_filename = $this->_tarname;
}
clearstatcache();
return is_file($p_filename);
}
function _openWrite() {
if ($this->_compress_type == 'gz') {
$this->_file = gzopen($this->_tarname, "wb9");
} else if ($this->_compress_type == 'bz2') {
$this->_file = bzopen($this->_tarname, "wb");
} else if ($this->_compress_type == 'none') {
$this->_file = @fopen($this->_tarname, "wb");
} else {
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
if ($this->_file == 0) {
$this->_error('Unable to open in write mode ''
. $this->_tarname . ''');
return false;
}
return true;
}
function _openRead() {
if (strtolower(substr($this->_tarname, 0, 7)) == 'http://') {
if ($this->_temp_tarname == '') {
$this->_temp_tarname = uniqid('tar') . '.tmp';
if (!$v_file_from = @fopen($this->_tarname, 'rb')) {
$this->_error('Unable to open in read mode ''
. $this->_tarname . ''');
$this->_temp_tarname = '';
return false;
}
if (!$v_file_to = @fopen($this->_temp_tarname, 'wb')) {
$this->_error('Unable to open in write mode ''
. $this->_temp_tarname . ''');
$this->_temp_tarname = '';
return false;
}
while ($v_data = fread($v_file_from, 1024)) {
fwrite($v_file_to, $v_data);
}
fclose($v_file_from);
fclose($v_file_to);
}
$v_filename = $this->_temp_tarname;
} else {
$v_filename = $this->_tarname;
}
if ($this->_compress_type == 'gz') {
$this->_file = gzopen($v_filename, "rb");
} else if ($this->_compress_type == 'bz2') {
$this->_file = bzopen($v_filename, "rb");
} else if ($this->_compress_type == 'none') {
$this->_file = @fopen($v_filename, "rb");
} else {
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
if ($this->_file == 0) {
$this->_error('Unable to open in read mode '' . $v_filename . ''');
return false;
}
return true;
}
function _openReadWrite() {
if ($this->_compress_type == 'gz') {
$this->_file = gzopen($this->_tarname, "r+b");
} else if ($this->_compress_type == 'bz2') {
$this->_file = bzopen($this->_tarname, "r+b");
} else if ($this->_compress_type == 'none') {
$this->_file = @fopen($this->_tarname, "r+b");
} else {
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
if ($this->_file == 0) {
$this->_error('Unable to open in read/write mode ''
. $this->_tarname . ''');
return false;
}
return true;
}
function _close() {
if (is_resource($this->_file)) {
if ($this->_compress_type == 'gz') {
gzclose($this->_file);
} else if ($this->_compress_type == 'bz2') {
bzclose($this->_file);
} else if ($this->_compress_type == 'none') {
fclose($this->_file);
} else {
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
$this->_file = 0;
}
if ($this->_temp_tarname != '') {
@unlink($this->_temp_tarname);
$this->_temp_tarname = '';
}
return true;
}
function _cleanFile() {
$this->_close();
if ($this->_temp_tarname != '') {
@unlink($this->_temp_tarname);
$this->_temp_tarname = '';
} else {
@unlink($this->_tarname);
}
$this->_tarname = '';
return true;
}
function _writeBlock($p_binary_data, $p_len = null) {
if (is_resource($this->_file)) {
if ($p_len === null) {
if ($this->_compress_type == 'gz')
@gzputs($this->_file, $p_binary_data);
else if ($this->_compress_type == 'bz2')
@bzwrite($this->_file, $p_binary_data);
else if ($this->_compress_type == 'none')
@fputs($this->_file, $p_binary_data);
else
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
} else {
if ($this->_compress_type == 'gz')
@gzputs($this->_file, $p_binary_data, $p_len);
else if ($this->_compress_type == 'bz2')
@bzwrite($this->_file, $p_binary_data, $p_len);
else if ($this->_compress_type == 'none')
@fputs($this->_file, $p_binary_data, $p_len);
else
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
}
return true;
}
function _readBlock() {
$v_block = null;
if (is_resource($this->_file)) {
if ($this->_compress_type == 'gz')
$v_block = @gzread($this->_file, 512);
else if ($this->_compress_type == 'bz2')
$v_block = @bzread($this->_file, 512);
else if ($this->_compress_type == 'none')
$v_block = @fread($this->_file, 512);
else
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
return $v_block;
}
function _jumpBlock($p_len = null) {
if (is_resource($this->_file)) {
if ($p_len === null)
$p_len = 1;
if ($this->_compress_type == 'gz') {
@gzseek($this->_file, gztell($this->_file) + ($p_len * 512));
} else if ($this->_compress_type == 'bz2') {
for ($i = 0; $i < $p_len; $i++)
$this->_readBlock();
} else if ($this->_compress_type == 'none')
@fseek($this->_file, ftell($this->_file) + ($p_len * 512));
else
$this->_error('Unknown or missing compression type ('
. $this->_compress_type . ')');
}
return true;
}
function _writeFooter() {
if (is_resource($this->_file)) {
$v_binary_data = pack('a1024', '');
$this->_writeBlock($v_binary_data);
}
return true;
}
function _addList($p_list, $p_add_dir, $p_remove_dir) {
$v_result = true;
$v_header = array();
$p_add_dir = $this->_translateWinPath($p_add_dir);
$p_remove_dir = $this->_translateWinPath($p_remove_dir, false);
if (!$this->_file) {
$this->_error('Invalid file descriptor');
return false;
}
if (sizeof($p_list) == 0)
return true;
foreach ($p_list as $v_filename) {
if (!$v_result) {
break;
}
if ($v_filename == $this->_tarname)
continue;
if ($v_filename == '')
continue;
if (!file_exists($v_filename)) {
$this->_warning("File '$v_filename' does not exist");
continue;
}
if (!$this->_addFile($v_filename, $v_header, $p_add_dir, $p_remove_dir))
return false;
if (@is_dir($v_filename)) {
if (!($p_hdir = opendir($v_filename))) {
$this->_warning("Directory '$v_filename' can not be read");
continue;
}
while (false !== ($p_hitem = readdir($p_hdir))) {
if (($p_hitem != '.') && ($p_hitem != '..')) {
if ($v_filename != ".")
$p_temp_list[0] = $v_filename . '/' . $p_hitem;
else
$p_temp_list[0] = $p_hitem;
$v_result = $this->_addList($p_temp_list, $p_add_dir, $p_remove_dir);
}
}
unset($p_temp_list);
unset($p_hdir);
unset($p_hitem);
}
}
return $v_result;
}
function _addFile($p_filename, &$p_header, $p_add_dir, $p_remove_dir) {
if (!$this->_file) {
$this->_error('Invalid file descriptor');
return false;
}
if ($p_filename == '') {
$this->_error('Invalid file name');
return false;
}
$p_filename = $this->_translateWinPath($p_filename, false);
;
$v_stored_filename = $p_filename;
if (strcmp($p_filename, $p_remove_dir) == 0) {
return true;
}
if ($p_remove_dir != '') {
if (substr($p_remove_dir, -1) != '/')
$p_remove_dir .= '/';
if (substr($p_filename, 0, strlen($p_remove_dir)) == $p_remove_dir)
$v_stored_filename = substr($p_filename, strlen($p_remove_dir));
}
$v_stored_filename = $this->_translateWinPath($v_stored_filename);
if ($p_add_dir != '') {
if (substr($p_add_dir, -1) == '/')
$v_stored_filename = $p_add_dir . $v_stored_filename;
else
$v_stored_filename = $p_add_dir . '/' . $v_stored_filename;
}
$v_stored_filename = $this->_pathReduction($v_stored_filename);
if ($this->_isArchive($p_filename)) {
if (($v_file = @fopen($p_filename, "rb")) == 0) {
$this->_warning("Unable to open file '" . $p_filename
. "' in binary read mode");
return true;
}
if (!$this->_writeHeader($p_filename, $v_stored_filename))
return false;
while (($v_buffer = fread($v_file, 512)) != '') {
$v_binary_data = pack("a512", "$v_buffer");
$this->_writeBlock($v_binary_data);
}
fclose($v_file);
} else {
if (!$this->_writeHeader($p_filename, $v_stored_filename))
return false;
}
return true;
}
function _addString($p_filename, $p_string) {
if (!$this->_file) {
$this->_error('Invalid file descriptor');
return false;
}
if ($p_filename == '') {
$this->_error('Invalid file name');
return false;
}
$p_filename = $this->_translateWinPath($p_filename, false);
;
if (!$this->_writeHeaderBlock($p_filename, strlen($p_string), time(), 384, "", 0, 0))
return false;
$i = 0;
while (($v_buffer = substr($p_string, (($i++) * 512), 512)) != '') {
$v_binary_data = pack("a512", $v_buffer);
$this->_writeBlock($v_binary_data);
}
return true;
}
function _writeHeader($p_filename, $p_stored_filename) {
if ($p_stored_filename == '')
$p_stored_filename = $p_filename;
$v_reduce_filename = $this->_pathReduction($p_stored_filename);
if (strlen($v_reduce_filename) > 99) {
if (!$this->_writeLongHeader($v_reduce_filename))
return false;
}
$v_info = stat($p_filename);
$v_uid = sprintf("%6s ", DecOct($v_info[4]));
$v_gid = sprintf("%6s ", DecOct($v_info[5]));
$v_perms = sprintf("%6s ", DecOct(fileperms($p_filename)));
$v_mtime = sprintf("%11s", DecOct(filemtime($p_filename)));
if (@is_dir($p_filename)) {
$v_typeflag = "5";
$v_size = sprintf("%11s ", DecOct(0));
} else {
$v_typeflag = '';
clearstatcache();
$v_size = sprintf("%11s ", DecOct(filesize($p_filename)));
}
$v_linkname = '';
$v_magic = '';
$v_version = '';
$v_uname = '';
$v_gname = '';
$v_devmajor = '';
$v_devminor = '';
$v_prefix = '';
$v_binary_data_first = pack("a100a8a8a8a12A12", $v_reduce_filename, $v_perms, $v_uid, $v_gid, $v_size, $v_mtime);
$v_binary_data_last = pack("a1a100a6a2a32a32a8a8a155a12", $v_typeflag, $v_linkname, $v_magic, $v_version, $v_uname, $v_gname, $v_devmajor, $v_devminor, $v_prefix, '');
$v_checksum = 0;
for ($i = 0; $i < 148; $i++)
$v_checksum += ord(substr($v_binary_data_first, $i, 1));
for ($i = 148; $i < 156; $i++)
$v_checksum += ord(' ');
for ($i = 156, $j = 0; $i < 512; $i++, $j++)
$v_checksum += ord(substr($v_binary_data_last, $j, 1));
$this->_writeBlock($v_binary_data_first, 148);
$v_checksum = sprintf("%6s ", DecOct($v_checksum));
$v_binary_data = pack("a8", $v_checksum);
$this->_writeBlock($v_binary_data, 8);
$this->_writeBlock($v_binary_data_last, 356);
return true;
}
function _writeHeaderBlock($p_filename, $p_size, $p_mtime = 0, $p_perms = 0, $p_type = '', $p_uid = 0, $p_gid = 0) {
$p_filename = $this->_pathReduction($p_filename);
if (strlen($p_filename) > 99) {
if (!$this->_writeLongHeader($p_filename))
return false;
}
if ($p_type == "5") {
$v_size = sprintf("%11s ", DecOct(0));
} else {
$v_size = sprintf("%11s ", DecOct($p_size));
}
$v_uid = sprintf("%6s ", DecOct($p_uid));
$v_gid = sprintf("%6s ", DecOct($p_gid));
$v_perms = sprintf("%6s ", DecOct($p_perms));
$v_mtime = sprintf("%11s", DecOct($p_mtime));
$v_linkname = '';
$v_magic = '';
$v_version = '';
$v_uname = '';
$v_gname = '';
$v_devmajor = '';
$v_devminor = '';
$v_prefix = '';
$v_binary_data_first = pack("a100a8a8a8a12A12", $p_filename, $v_perms, $v_uid, $v_gid, $v_size, $v_mtime);
$v_binary_data_last = pack("a1a100a6a2a32a32a8a8a155a12", $p_type, $v_linkname, $v_magic, $v_version, $v_uname, $v_gname, $v_devmajor, $v_devminor, $v_prefix, '');
$v_checksum = 0;
for ($i = 0; $i < 148; $i++)
$v_checksum += ord(substr($v_binary_data_first, $i, 1));
for ($i = 148; $i < 156; $i++)
$v_checksum += ord(' ');
for ($i = 156, $j = 0; $i < 512; $i++, $j++)
$v_checksum += ord(substr($v_binary_data_last, $j, 1));
$this->_writeBlock($v_binary_data_first, 148);
$v_checksum = sprintf("%6s ", DecOct($v_checksum));
$v_binary_data = pack("a8", $v_checksum);
$this->_writeBlock($v_binary_data, 8);
$this->_writeBlock($v_binary_data_last, 356);
return true;
}
function _writeLongHeader($p_filename) {
$v_size = sprintf("%11s ", DecOct(strlen($p_filename)));
$v_typeflag = 'L';
$v_linkname = '';
$v_magic = '';
$v_version = '';
$v_uname = '';
$v_gname = '';
$v_devmajor = '';
$v_devminor = '';
$v_prefix = '';
$v_binary_data_first = pack("a100a8a8a8a12A12", '././@LongLink', 0, 0, 0, $v_size, 0);
$v_binary_data_last = pack("a1a100a6a2a32a32a8a8a155a12", $v_typeflag, $v_linkname, $v_magic, $v_version, $v_uname, $v_gname, $v_devmajor, $v_devminor, $v_prefix, '');
$v_checksum = 0;
for ($i = 0; $i < 148; $i++)
$v_checksum += ord(substr($v_binary_data_first, $i, 1));
for ($i = 148; $i < 156; $i++)
$v_checksum += ord(' ');
for ($i = 156, $j = 0; $i < 512; $i++, $j++)
$v_checksum += ord(substr($v_binary_data_last, $j, 1));
$this->_writeBlock($v_binary_data_first, 148);
$v_checksum = sprintf("%6s ", DecOct($v_checksum));
$v_binary_data = pack("a8", $v_checksum);
$this->_writeBlock($v_binary_data, 8);
$this->_writeBlock($v_binary_data_last, 356);
$i = 0;
while (($v_buffer = substr($p_filename, (($i++) * 512), 512)) != '') {
$v_binary_data = pack("a512", "$v_buffer");
$this->_writeBlock($v_binary_data);
}
return true;
}
function _readHeader($v_binary_data, &$v_header) {
if (strlen($v_binary_data) == 0) {
$v_header['filename'] = '';
return true;
}
if (strlen($v_binary_data) != 512) {
$v_header['filename'] = '';
$this->_error('Invalid block size : ' . strlen($v_binary_data));
return false;
}
if (!is_array($v_header)) {
$v_header = array();
}
$v_checksum = 0;
for ($i = 0; $i < 148; $i++)
$v_checksum+=ord(substr($v_binary_data, $i, 1));
for ($i = 148; $i < 156; $i++)
$v_checksum += ord(' ');
for ($i = 156; $i < 512; $i++)
$v_checksum+=ord(substr($v_binary_data, $i, 1));
$v_data = unpack("a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/"
. "a8checksum/a1typeflag/a100link/a6magic/a2version/"
. "a32uname/a32gname/a8devmajor/a8devminor", $v_binary_data);
$v_header['checksum'] = OctDec(trim($v_data['checksum']));
if ($v_header['checksum'] != $v_checksum) {
$v_header['filename'] = '';
if (($v_checksum == 256) && ($v_header['checksum'] == 0))
return true;
$this->_error('Invalid checksum for file "' . $v_data['filename']
. '" : ' . $v_checksum . ' calculated, '
. $v_header['checksum'] . ' expected');
return false;
}
$v_header['filename'] = trim($v_data['filename']);
if ($this->_maliciousFilename($v_header['filename'])) {
$this->_error('Malicious .tar detected, file "' . $v_header['filename'] .
'" will not install in desired directory tree');
return false;
}
$v_header['mode'] = OctDec(trim($v_data['mode']));
$v_header['uid'] = OctDec(trim($v_data['uid']));
$v_header['gid'] = OctDec(trim($v_data['gid']));
$v_header['size'] = OctDec(trim($v_data['size']));
$v_header['mtime'] = OctDec(trim($v_data['mtime']));
if (($v_header['typeflag'] = $v_data['typeflag']) == "5") {
$v_header['size'] = 0;
}
$v_header['link'] = trim($v_data['link']);
return true;
}
function _maliciousFilename($file) {
if (strpos($file, '/../') !== false) {
return true;
}
if (strpos($file, '../') === 0) {
return true;
}
return false;
}
function _readLongHeader(&$v_header) {
$v_filename = '';
$n = floor($v_header['size'] / 512);
for ($i = 0; $i < $n; $i++) {
$v_content = $this->_readBlock();
$v_filename .= $v_content;
}
if (($v_header['size'] % 512) != 0) {
$v_content = $this->_readBlock();
$v_filename .= $v_content;
}
$v_binary_data = $this->_readBlock();
if (!$this->_readHeader($v_binary_data, $v_header))
return false;
$v_header['filename'] = $v_filename;
if ($this->_maliciousFilename($v_filename)) {
$this->_error('Malicious .tar detected, file "' . $v_filename .
'" will not install in desired directory tree');
return false;
}
return true;
}
function _extractInString($p_filename) {
$v_result_str = "";
While (strlen($v_binary_data = $this->_readBlock()) != 0) {
if (!$this->_readHeader($v_binary_data, $v_header))
return NULL;
if ($v_header['filename'] == '')
continue;
if ($v_header['typeflag'] == 'L') {
if (!$this->_readLongHeader($v_header))
return NULL;
}
if ($v_header['filename'] == $p_filename) {
if ($v_header['typeflag'] == "5") {
$this->_error('Unable to extract in string a directory '
. 'entry {' . $v_header['filename'] . '}');
return NULL;
} else {
$n = floor($v_header['size'] / 512);
for ($i = 0; $i < $n; $i++) {
$v_result_str .= $this->_readBlock();
}
if (($v_header['size'] % 512) != 0) {
$v_content = $this->_readBlock();
$v_result_str .= substr($v_content, 0, ($v_header['size'] % 512));
}
return $v_result_str;
}
} else {
$this->_jumpBlock(ceil(($v_header['size'] / 512)));
}
}
return NULL;
}
function _extractList($p_path, &$p_list_detail, $p_mode, $p_file_list, $p_remove_path) {
$v_result = true;
$v_nb = 0;
$v_extract_all = true;
$v_listing = false;
$p_path = $this->_translateWinPath($p_path, false);
if ($p_path == '' || (substr($p_path, 0, 1) != '/' && substr($p_path, 0, 3) != "../" && !strpos($p_path, ':'))) {
$p_path = "./" . $p_path;
}
$p_remove_path = $this->_translateWinPath($p_remove_path);
if (($p_remove_path != '') && (substr($p_remove_path, -1) != '/'))
$p_remove_path .= '/';
$p_remove_path_size = strlen($p_remove_path);
switch ($p_mode) {
case "complete" :
$v_extract_all = TRUE;
$v_listing = FALSE;
break;
case "partial" :
$v_extract_all = FALSE;
$v_listing = FALSE;
break;
case "list" :
$v_extract_all = FALSE;
$v_listing = TRUE;
break;
default :
$this->_error('Invalid extract mode (' . $p_mode . ')');
return false;
}
clearstatcache();
while (strlen($v_binary_data = $this->_readBlock()) != 0) {
$v_extract_file = FALSE;
$v_extraction_stopped = 0;
if (!$this->_readHeader($v_binary_data, $v_header))
return false;
if ($v_header['filename'] == '') {
continue;
}
if ($v_header['typeflag'] == 'L') {
if (!$this->_readLongHeader($v_header))
return false;
}
if ((!$v_extract_all) && (is_array($p_file_list))) {
$v_extract_file = false;
for ($i = 0; $i < sizeof($p_file_list); $i++) {
if (substr($p_file_list[$i], -1) == '/') {
if ((strlen($v_header['filename']) > strlen($p_file_list[$i])) && (substr($v_header['filename'], 0, strlen($p_file_list[$i])) == $p_file_list[$i])) {
$v_extract_file = TRUE;
break;
}
} elseif ($p_file_list[$i] == $v_header['filename']) {
$v_extract_file = TRUE;
break;
}
}
} else {
$v_extract_file = TRUE;
}
if (($v_extract_file) && (!$v_listing)) {
if (($p_remove_path != '') && (substr($v_header['filename'], 0, $p_remove_path_size) == $p_remove_path))
$v_header['filename'] = substr($v_header['filename'], $p_remove_path_size);
if (($p_path != './') && ($p_path != '/')) {
while (substr($p_path, -1) == '/')
$p_path = substr($p_path, 0, strlen($p_path) - 1);
if (substr($v_header['filename'], 0, 1) == '/')
$v_header['filename'] = $p_path . $v_header['filename'];
else
$v_header['filename'] = $p_path . '/' . $v_header['filename'];
}
if (file_exists($v_header['filename'])) {
if ((@is_dir($v_header['filename'])) && ($v_header['typeflag'] == '')) {
$this->_error('File ' . $v_header['filename']
. ' already exists as a directory');
return false;
}
if (($this->_isArchive($v_header['filename'])) && ($v_header['typeflag'] == "5")) {
$this->_error('Directory ' . $v_header['filename']
. ' already exists as a file');
return false;
}
if (!is_writeable($v_header['filename'])) {
$this->_error('File ' . $v_header['filename']
. ' already exists and is write protected');
return false;
}
if (filemtime($v_header['filename']) > $v_header['mtime']) {
}
} elseif (($v_result = $this->_dirCheck(($v_header['typeflag'] == "5" ? $v_header['filename'] : dirname($v_header['filename'])))) != 1) {
$this->_error('Unable to create path for ' . $v_header['filename']);
return false;
}
if ($v_extract_file) {
if ($v_header['typeflag'] == "5") {
if (!@file_exists($v_header['filename'])) {
if (!@mkdir($v_header['filename'], 0777)) {
$this->_error('Unable to create directory {'
. $v_header['filename'] . '}');
return false;
}
}
} elseif ($v_header['typeflag'] == "2") {
if (!@symlink($v_header['link'], $v_header['filename'])) {
$this->_error('Unable to extract symbolic link {'
. $v_header['filename'] . '}');
return false;
}
} else {
if (($v_dest_file = @fopen($v_header['filename'], "wb")) == 0) {
$this->_error('Error while opening {' . $v_header['filename']
. '} in write binary mode');
return false;
} else {
$n = floor($v_header['size'] / 512);
for ($i = 0; $i < $n; $i++) {
$v_content = $this->_readBlock();
fwrite($v_dest_file, $v_content, 512);
}
if (($v_header['size'] % 512) != 0) {
$v_content = $this->_readBlock();
fwrite($v_dest_file, $v_content, ($v_header['size'] % 512));
}
@fclose($v_dest_file);
@touch($v_header['filename'], $v_header['mtime']);
if ($v_header['mode'] & 0111) {
$mode = fileperms($v_header['filename']) | (~umask() & 0111);
@chmod($v_header['filename'], $mode);
}
}
clearstatcache();
if (filesize($v_header['filename']) != $v_header['size']) {
$this->_error('Extracted file ' . $v_header['filename']
. ' does not have the correct file size ''
. filesize($v_header['filename'])
. '' (' . $v_header['size']
. ' expected). Archive may be corrupted.');
return false;
}
}
} else {
$this->_jumpBlock(ceil(($v_header['size'] / 512)));
}
} else {
$this->_jumpBlock(ceil(($v_header['size'] / 512)));
}
if ($v_listing || $v_extract_file || $v_extraction_stopped) {
if (($v_file_dir = dirname($v_header['filename'])) == $v_header['filename'])
$v_file_dir = '';
if ((substr($v_header['filename'], 0, 1) == '/') && ($v_file_dir == ''))
$v_file_dir = '/';
$p_list_detail[$v_nb++] = $v_header;
if (is_array($p_file_list) && (count($p_list_detail) == count($p_file_list))) {
return true;
}
}
}
return true;
}
function _openAppend() {
if (filesize($this->_tarname) == 0)
return $this->_openWrite();
if ($this->_compress) {
$this->_close();
if (!@rename($this->_tarname, $this->_tarname . ".tmp")) {
$this->_error('Error while renaming '' . $this->_tarname
. '' to temporary file '' . $this->_tarname
. '.tmp'');
return false;
}
if ($this->_compress_type == 'gz')
$v_temp_tar = @gzopen($this->_tarname . ".tmp", "rb");
elseif ($this->_compress_type == 'bz2')
$v_temp_tar = @bzopen($this->_tarname . ".tmp", "rb");
if ($v_temp_tar == 0) {
$this->_error('Unable to open file '' . $this->_tarname
. '.tmp' in binary read mode');
@rename($this->_tarname . ".tmp", $this->_tarname);
return false;
}
if (!$this->_openWrite()) {
@rename($this->_tarname . ".tmp", $this->_tarname);
return false;
}
if ($this->_compress_type == 'gz') {
while (!@gzeof($v_temp_tar)) {
$v_buffer = @gzread($v_temp_tar, 512);
if ($v_buffer == ARCHIVE_TAR_END_BLOCK) {
continue;
}
$v_binary_data = pack("a512", $v_buffer);
$this->_writeBlock($v_binary_data);
}
@gzclose($v_temp_tar);
} elseif ($this->_compress_type == 'bz2') {
while (strlen($v_buffer = @bzread($v_temp_tar, 512)) > 0) {
if ($v_buffer == ARCHIVE_TAR_END_BLOCK) {
continue;
}
$v_binary_data = pack("a512", $v_buffer);
$this->_writeBlock($v_binary_data);
}
@bzclose($v_temp_tar);
}
if (!@unlink($this->_tarname . ".tmp")) {
$this->_error('Error while deleting temporary file ''
. $this->_tarname . '.tmp'');
}
} else {
if (!$this->_openReadWrite())
return false;
clearstatcache();
$v_size = filesize($this->_tarname);
fseek($this->_file, $v_size - 1024);
if (fread($this->_file, 512) == ARCHIVE_TAR_END_BLOCK) {
fseek($this->_file, $v_size - 1024);
} elseif (fread($this->_file, 512) == ARCHIVE_TAR_END_BLOCK) {
fseek($this->_file, $v_size - 512);
}
}
return true;
}
function _append($p_filelist, $p_add_dir = '', $p_remove_dir = '') {
if (!$this->_openAppend())
return false;
if ($this->_addList($p_filelist, $p_add_dir, $p_remove_dir))
$this->_writeFooter();
$this->_close();
return true;
}
function _dirCheck($p_dir) {
clearstatcache();
if ((@is_dir($p_dir)) || ($p_dir == ''))
return true;
$p_parent_dir = dirname($p_dir);
if (($p_parent_dir != $p_dir) &&
($p_parent_dir != '') &&
(!$this->_dirCheck($p_parent_dir)))
return false;
if (!@mkdir($p_dir, 0777)) {
$this->_error("Unable to create directory '$p_dir'");
return false;
}
return true;
}
function _pathReduction($p_dir) {
$v_result = '';
if ($p_dir != '') {
$v_list = explode('/', $p_dir);
for ($i = sizeof($v_list) - 1; $i >= 0; $i--) {
if ($v_list[$i] == ".") {
} else if ($v_list[$i] == "..") {
$i--;
} else if (($v_list[$i] == '') && ($i != (sizeof($v_list) - 1)) && ($i != 0)) {
} else {
$v_result = $v_list[$i] . ($i != (sizeof($v_list) - 1) ? '/'
. $v_result : '');
}
}
}
$v_result = strtr($v_result, '\', '/');
return $v_result;
}
function _translateWinPath($p_path, $p_remove_disk_letter = true) {
if (defined('OS_WINDOWS') && OS_WINDOWS) {
if (($p_remove_disk_letter) && (($v_position = strpos($p_path, ':')) != false)) {
$p_path = substr($p_path, $v_position + 1);
}
if ((strpos($p_path, '\') > 0) || (substr($p_path, 0, 1) == '\')) {
$p_path = strtr($p_path, '\', '/');
}
}
return $p_path;
}
}
?>