class Archive_Tar
{
public $_tarname = '';
public $_compress = false;
public $_compress_type = 'none';
public $_separator = ' ';
public $_file = 0;
public $_temp_tarname = '';
public $_ignore_regexp = '';
public $error_object = null;
public $_fmt = '';
protected $buffer_length;
public function __construct($p_tarname, $p_compress = null, $buffer_length = 512)
{
$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 == "\37\213") {
$this->_compress = true;
$this->_compress_type = 'gz';
}
elseif ($data == "BZ") {
$this->_compress = true;
$this->_compress_type = 'bz2';
}
elseif (file_get_contents($p_tarname, false, null, 1, 4) == '7zXZ') {
$this->_compress = true;
$this->_compress_type = 'lzma2';
}
}
}
else {
if (substr($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;
$this->_compress_type = 'bz2';
}
else {
if (substr($p_tarname, -2) == 'xz') {
$this->_compress = true;
$this->_compress_type = 'lzma2';
}
}
}
}
else {
if (($p_compress === true) || ($p_compress == 'gz')) {
$this->_compress = true;
$this->_compress_type = 'gz';
}
else {
if ($p_compress == 'bz2') {
$this->_compress = true;
$this->_compress_type = 'bz2';
}
else {
if ($p_compress == 'lzma2') {
$this->_compress = true;
$this->_compress_type = 'lzma2';
}
else {
$this->_error(
"Unsupported compression type '$p_compress'\n" .
"Supported types are 'gz', 'bz2' and 'lzma2'.\n"
);
return false;
}
}
}
}
$this->_tarname = $p_tarname;
if ($this->_compress) { if ($this->_compress_type == 'gz') {
$extname = 'zlib';
}
else {
if ($this->_compress_type == 'bz2') {
$extname = 'bz2';
}
else {
if ($this->_compress_type == 'lzma2') {
$extname = 'xz';
}
}
}
if (!extension_loaded($extname)) {
$this->loadExtension($extname);
}
if (!extension_loaded($extname)) {
$this->_error(
"The extension '$extname' couldn't be found.\n" .
"Please make sure your version of PHP was built " .
"with '$extname' support.\n"
);
return false;
}
}
if (version_compare(PHP_VERSION, "5.5.0-dev") < 0) {
$this->_fmt = "a100filename/a8mode/a8uid/a8gid/a12size/a12mtime/" .
"a8checksum/a1typeflag/a100link/a6magic/a2version/" .
"a32uname/a32gname/a8devmajor/a8devminor/a131prefix";
}
else {
$this->_fmt = "Z100filename/Z8mode/Z8uid/Z8gid/Z12size/Z12mtime/" .
"Z8checksum/Z1typeflag/Z100link/Z6magic/Z2version/" .
"Z32uname/Z32gname/Z8devmajor/Z8devminor/Z131prefix";
}
$this->buffer_length = $buffer_length;
}
public function __destruct()
{
$this->_close();
if ($this->_temp_tarname != '' && (bool) preg_match('/^tar[[:alnum:]]*\.tmp$/', $this->_temp_tarname)) {
@backdrop_unlink($this->_temp_tarname);
}
}
public static function loadExtension($ext)
{
if (extension_loaded($ext)) {
return true;
}
if (
function_exists('dl') === false ||
ini_get('enable_dl') != 1
) {
return false;
}
if (OS_WINDOWS) {
$suffix = '.dll';
}
elseif (PHP_OS == 'HP-UX') {
$suffix = '.sl';
}
elseif (PHP_OS == 'AIX') {
$suffix = '.a';
}
elseif (PHP_OS == 'OSX') {
$suffix = '.bundle';
}
else {
$suffix = '.so';
}
return @dl('php_' . $ext . $suffix) || @dl($ext . $suffix);
}
public function create($p_filelist)
{
return $this->createModify($p_filelist, '', '');
}
public function add($p_filelist)
{
return $this->addModify($p_filelist, '', '');
}
public function extract($p_path = '', $p_preserve = false, $p_symlinks = true)
{
return $this->extractModify($p_path, '', $p_preserve, $p_symlinks);
}
public 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 $v_list_detail;
}
public function createModify($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 $v_result;
}
public function addModify($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 $v_result;
}
public function addString($p_filename, $p_string, $p_datetime = false, $p_params = array())
{
$p_stamp = @$p_params["stamp"] ? $p_params["stamp"] : ($p_datetime ? $p_datetime : time());
$p_mode = @$p_params["mode"] ? $p_params["mode"] : 0600;
$p_type = @$p_params["type"] ? $p_params["type"] : "";
$p_uid = @$p_params["uid"] ? $p_params["uid"] : "";
$p_gid = @$p_params["gid"] ? $p_params["gid"] : "";
$v_result = true;
if (!$this->_isArchive()) {
if (!$this->_openWrite()) {
return false;
}
$this->_close();
}
if (!$this->_openAppend()) {
return false;
}
$v_result = $this->_addString($p_filename, $p_string, $p_datetime, $p_params);
$this->_writeFooter();
$this->_close();
return $v_result;
}
public function extractModify($p_path, $p_remove_path, $p_preserve = false, $p_symlinks = true)
{
$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,
$p_preserve,
$p_symlinks
);
$this->_close();
}
return $v_result;
}
public function extractInString($p_filename)
{
if ($this->_openRead()) {
$v_result = $this->_extractInString($p_filename);
$this->_close();
}
else {
$v_result = null;
}
return $v_result;
}
public function extractList($p_filelist, $p_path = '', $p_remove_path = '', $p_preserve = false, $p_symlinks = true)
{
$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,
$p_preserve,
$p_symlinks
);
$this->_close();
}
return $v_result;
}
public 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('Unknown attribute code ' . $v_att_list[$i] . '');
return false;
}
$i++;
}
return $v_result;
}
public function setIgnoreRegexp($regexp)
{
$this->_ignore_regexp = $regexp;
}
public function setIgnoreList($list)
{
$list = str_replace(array('#', '.', '^', '$'), array('\#', '\.', '\^', '\$'), $list);
$regexp = '#/' . join('$|/', $list) . '#';
$this->setIgnoreRegexp($regexp);
}
public function _error($p_message)
{
throw new Exception($p_message);
}
public function _warning($p_message)
{
throw new Exception($p_message);
}
public function _isArchive($p_filename = null)
{
if ($p_filename == null) {
$p_filename = $this->_tarname;
}
clearstatcache();
return @is_file($p_filename) && !@is_link($p_filename);
}
public function _openWrite()
{
if ($this->_compress_type == 'gz' && function_exists('gzopen')) {
$this->_file = @gzopen($this->_tarname, "wb9");
}
else {
if ($this->_compress_type == 'bz2' && function_exists('bzopen')) {
$this->_file = @bzopen($this->_tarname, "w");
}
else {
if ($this->_compress_type == 'lzma2' && function_exists('xzopen')) {
$this->_file = @xzopen($this->_tarname, 'w');
}
else {
if ($this->_compress_type == 'none') {
$this->_file = @fopen($this->_tarname, "wb");
}
else {
$this->_error(
'Unknown or missing compression type ('
. $this->_compress_type . ')'
);
return false;
}
}
}
}
if ($this->_file == 0) {
$this->_error(
'Unable to open in write mode \''
. $this->_tarname . '\''
);
return false;
}
return true;
}
public function _openRead()
{
if (strtolower(substr($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' && function_exists('gzopen')) {
$this->_file = @gzopen($v_filename, "rb");
}
else {
if ($this->_compress_type == 'bz2' && function_exists('bzopen')) {
$this->_file = @bzopen($v_filename, "r");
}
else {
if ($this->_compress_type == 'lzma2' && function_exists('xzopen')) {
$this->_file = @xzopen($v_filename, "r");
}
else {
if ($this->_compress_type == 'none') {
$this->_file = @fopen($v_filename, "rb");
}
else {
$this->_error(
'Unknown or missing compression type ('
. $this->_compress_type . ')'
);
return false;
}
}
}
}
if ($this->_file == 0) {
$this->_error('Unable to open in read mode \'' . $v_filename . '\'');
return false;
}
return true;
}
public function _openReadWrite()
{
if ($this->_compress_type == 'gz') {
$this->_file = @gzopen($this->_tarname, "r+b");
}
else {
if ($this->_compress_type == 'bz2') {
$this->_error(
'Unable to open bz2 in read/write mode \''
. $this->_tarname . '\' (limitation of bz2 extension)'
);
return false;
}
else {
if ($this->_compress_type == 'lzma2') {
$this->_error(
'Unable to open lzma2 in read/write mode \''
. $this->_tarname . '\' (limitation of lzma2 extension)'
);
return false;
}
else {
if ($this->_compress_type == 'none') {
$this->_file = @fopen($this->_tarname, "r+b");
}
else {
$this->_error(
'Unknown or missing compression type ('
. $this->_compress_type . ')'
);
return false;
}
}
}
}
if ($this->_file == 0) {
$this->_error(
'Unable to open in read/write mode \''
. $this->_tarname . '\''
);
return false;
}
return true;
}
public function _close()
{
if (is_resource($this->_file)) {
if ($this->_compress_type == 'gz') {
@gzclose($this->_file);
}
else {
if ($this->_compress_type == 'bz2') {
@bzclose($this->_file);
}
else {
if ($this->_compress_type == 'lzma2') {
@xzclose($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 != '') {
@backdrop_unlink($this->_temp_tarname);
$this->_temp_tarname = '';
}
return true;
}
public function _cleanFile()
{
$this->_close();
if ($this->_temp_tarname != '') {
@backdrop_unlink($this->_temp_tarname);
$this->_temp_tarname = '';
}
else {
@backdrop_unlink($this->_tarname);
}
$this->_tarname = '';
return true;
}
public function _writeBlock($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 == 'lzma2') {
@xzwrite($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 == 'lzma2') {
@xzwrite($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;
}
public 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 == 'lzma2') {
$v_block = @xzread($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 $v_block;
}
public function _jumpBlock($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 == 'lzma2') {
for ($i = 0; $i < $p_len; $i++) {
$this->_readBlock();
}
}
else {
if ($this->_compress_type == 'none') {
@fseek($this->_file, $p_len * 512, SEEK_CUR);
}
else {
$this->_error(
'Unknown or missing compression type ('
. $this->_compress_type . ')'
);
}
}
}
}
}
return true;
}
public function _writeFooter()
{
if (is_resource($this->_file)) {
$v_binary_data = pack('a1024', '');
$this->_writeBlock($v_binary_data);
}
return true;
}
public 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 ($this->_ignore_regexp && preg_match($this->_ignore_regexp, '/' . $v_filename)) {
$this->_warning("File '$v_filename' ignored");
continue;
}
if (!file_exists($v_filename) && !is_link($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) && !@is_link($v_filename)) {
if (!($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 $v_result;
}
public function _addFile($p_filename, &$p_header, $p_add_dir, $p_remove_dir, $v_stored_filename = null)
{
if (!$this->_file) {
$this->_error('Invalid file descriptor');
return false;
}
if ($p_filename == '') {
$this->_error('Invalid file name');
return false;
}
if (is_null($v_stored_filename)) {
$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, $this->buffer_length)) != '') {
$buffer_length = strlen("$v_buffer");
if ($buffer_length != $this->buffer_length) {
$pack_size = ((int) ($buffer_length / 512) + ($buffer_length % 512 !== 0 ? 1 : 0)) * 512;
$pack_format = sprintf('a%d', $pack_size);
}
else {
$pack_format = sprintf('a%d', $this->buffer_length);
}
$v_binary_data = pack($pack_format, "$v_buffer");
$this->_writeBlock($v_binary_data);
}
fclose($v_file);
}
else {
if (!$this->_writeHeader($p_filename, $v_stored_filename)) {
return false;
}
}
return true;
}
public function _addString($p_filename, $p_string, $p_datetime = false, $p_params = array())
{
$p_stamp = @$p_params["stamp"] ? $p_params["stamp"] : ($p_datetime ? $p_datetime : time());
$p_mode = @$p_params["mode"] ? $p_params["mode"] : 0600;
$p_type = @$p_params["type"] ? $p_params["type"] : "";
$p_uid = @$p_params["uid"] ? $p_params["uid"] : 0;
$p_gid = @$p_params["gid"] ? $p_params["gid"] : 0;
if (!$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 ($p_datetime === false) {
$p_datetime = time();
}
if (!$this->_writeHeaderBlock(
$p_filename,
strlen($p_string),
$p_stamp,
$p_mode,
$p_type,
$p_uid,
$p_gid
)
) {
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;
}
public function _writeHeader($p_filename, $p_stored_filename)
{
if ($p_stored_filename == '') {
$p_stored_filename = $p_filename;
}
$v_reduced_filename = $this->_pathReduction($p_stored_filename);
if (strlen($v_reduced_filename) > 99) {
if (!$this->_writeLongHeader($v_reduced_filename, false)) {
return false;
}
}
$v_linkname = '';
if (@is_link($p_filename)) {
$v_linkname = readlink($p_filename);
}
if (strlen($v_linkname) > 99) {
if (!$this->_writeLongHeader($v_linkname, true)) {
return false;
}
}
$v_info = lstat($p_filename);
$v_uid = sprintf("%07s", DecOct($v_info[4]));
$v_gid = sprintf("%07s", DecOct($v_info[5]));
$v_perms = sprintf("%07s", DecOct($v_info['mode'] & 000777));
$v_mtime = sprintf("%011s", DecOct($v_info['mtime']));
if (@is_link($p_filename)) {
$v_typeflag = '2';
$v_size = sprintf("%011s", DecOct(0));
}
elseif (@is_dir($p_filename)) {
$v_typeflag = "5";
$v_size = sprintf("%011s", DecOct(0));
}
else {
$v_typeflag = '0';
clearstatcache();
$v_size = sprintf("%011s", DecOct($v_info['size']));
}
$v_magic = 'ustar ';
$v_version = ' ';
$v_uname = '';
$v_gname = '';
if (function_exists('posix_getpwuid')) {
$userinfo = posix_getpwuid($v_info[4]);
$groupinfo = posix_getgrgid($v_info[5]);
if (isset($userinfo['name'])) {
$v_uname = $userinfo['name'];
}
if (isset($groupinfo['name'])) {
$v_gname = $groupinfo['name'];
}
}
$v_devmajor = '';
$v_devminor = '';
$v_prefix = '';
$v_binary_data_first = pack(
"a100a8a8a8a12a12",
$v_reduced_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);
$v_checksum = sprintf("%06s\0 ", DecOct($v_checksum));
$v_binary_data = pack("a8", $v_checksum);
$this->_writeBlock($v_binary_data, 8);
$this->_writeBlock($v_binary_data_last, 356);
return true;
}
public 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($p_filename, false)) {
return false;
}
}
if ($p_type == "5") {
$v_size = sprintf("%011s", DecOct(0));
}
else {
$v_size = sprintf("%011s", DecOct($p_size));
}
$v_uid = sprintf("%07s", DecOct($p_uid));
$v_gid = sprintf("%07s", DecOct($p_gid));
$v_perms = sprintf("%07s", DecOct($p_perms & 000777));
$v_mtime = sprintf("%11s", DecOct($p_mtime));
$v_linkname = '';
$v_magic = 'ustar ';
$v_version = ' ';
if (function_exists('posix_getpwuid')) {
$userinfo = posix_getpwuid($p_uid);
$groupinfo = posix_getgrgid($p_gid);
if ($userinfo === false || $groupinfo === false) {
$v_uname = '';
$v_gname = '';
}
else {
$v_uname = $userinfo['name'];
$v_gname = $groupinfo['name'];
}
}
else {
$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);
$v_checksum = sprintf("%06s ", DecOct($v_checksum));
$v_binary_data = pack("a8", $v_checksum);
$this->_writeBlock($v_binary_data, 8);
$this->_writeBlock($v_binary_data_last, 356);
return true;
}
public function _writeLongHeader($p_filename, $is_link = false)
{
$v_uid = sprintf("%07s", 0);
$v_gid = sprintf("%07s", 0);
$v_perms = sprintf("%07s", 0);
$v_size = sprintf("%'011s", DecOct(strlen($p_filename)));
$v_mtime = sprintf("%011s", 0);
$v_typeflag = ($is_link ? 'K' : 'L');
$v_linkname = '';
$v_magic = 'ustar ';
$v_version = ' ';
$v_uname = '';
$v_gname = '';
$v_devmajor = '';
$v_devminor = '';
$v_prefix = '';
$v_binary_data_first = pack(
"a100a8a8a8a12a12",
'././@LongLink',
$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);
$v_checksum = sprintf("%06s\0 ", DecOct($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;
}
public 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;
$v_binary_split = str_split($v_binary_data);
$v_checksum += array_sum(array_map('ord', array_slice($v_binary_split, 0, 148)));
$v_checksum += array_sum(array_map('ord', array(' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ',)));
$v_checksum += array_sum(array_map('ord', array_slice($v_binary_split, 156, 512)));
$v_data = unpack($this->_fmt, $v_binary_data);
if (strlen($v_data["prefix"]) > 0) {
$v_data["filename"] = "$v_data[prefix]/$v_data[filename]";
}
$v_data_checksum = trim($v_data['checksum']);
if (!preg_match('/^[0-7]*$/', $v_data_checksum)) {
$this->_error(
'Invalid checksum for file "' . $v_data['filename']
. '" : ' . $v_data_checksum . ' extracted'
);
return false;
}
$v_header['checksum'] = OctDec($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;
}
$v_header['filename'] = rtrim($v_data['filename'], "\0");
if ($this->_isMaliciousFilename($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'] = $this->_tarRecToSize($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;
}
private function _tarRecToSize($tar_size)
{
$ch = ord($tar_size[0]);
if ($ch & 0x80) {
$rec_str = $tar_size . "\x00";
$size = ($ch & 0x40) ? -1 : 0;
$size = ($size << 6) | ($ch & 0x3f);
for ($num_ch = 1; $num_ch < 12; ++$num_ch) {
$size = ($size * 256) + ord($rec_str[$num_ch]);
}
return $size;
}
else {
return OctDec(trim($tar_size));
}
}
private function _isMaliciousFilename($file)
{
if (strpos($file, '://') !== false) {
return true;
}
if (strpos($file, '../') !== false || strpos($file, '..\\') !== false) {
return true;
}
return false;
}
public function _readLongHeader(&$v_header)
{
$v_filename = '';
$v_filesize = $v_header['size'];
$n = floor($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;
}
$v_filename = rtrim(substr($v_filename, 0, $v_filesize), "\0");
$v_header['filename'] = $v_filename;
if ($this->_isMaliciousFilename($v_filename)) {
$this->_error(
'Malicious .tar detected, file "' . $v_filename .
'" will not install in desired directory tree'
);
return false;
}
return true;
}
private function _extractInString($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;
}
switch ($v_header['typeflag']) {
case 'L':
{ if (!$this->_readLongHeader($v_header)) {
return null;
} }
}
break;
case 'K':
{ $v_link_header = $v_header;
if (!$this->_readLongHeader($v_link_header)) {
return null;
}
$v_header['link'] = $v_link_header['filename']; }
}
break;
}
if ($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)));
}
}