Файл: sys/inc/tar.php
Строк: 874
<?
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;
}
}
?>