diff options
Diffstat (limited to 'lib/prado/framework/IO/TTarFileExtractor.php')
| -rw-r--r-- | lib/prado/framework/IO/TTarFileExtractor.php | 571 |
1 files changed, 571 insertions, 0 deletions
diff --git a/lib/prado/framework/IO/TTarFileExtractor.php b/lib/prado/framework/IO/TTarFileExtractor.php new file mode 100644 index 0000000..cb613ff --- /dev/null +++ b/lib/prado/framework/IO/TTarFileExtractor.php @@ -0,0 +1,571 @@ +<?php +/** + * TTarFileExtractor class file + * + * @author Vincent Blavet <vincent@phpconcept.net> + * @copyright Copyright © 1997-2003 The PHP Group + * @package System.IO + */ + +/* vim: set ts=4 sw=4: */ +// +----------------------------------------------------------------------+ +// | PHP Version 4 | +// +----------------------------------------------------------------------+ +// | Copyright (c) 1997-2003 The PHP Group | +// +----------------------------------------------------------------------+ +// | This source file is subject to version 3.0 of the PHP license, | +// | that is bundled with this package in the file LICENSE, and is | +// | available through the world-wide-web at the following url: | +// | http://www.php.net/license/3_0.txt. | +// | If you did not receive a copy of the PHP license and are unable to | +// | obtain it through the world-wide-web, please send a note to | +// | license@php.net so we can mail you a copy immediately. | +// +----------------------------------------------------------------------+ +// | Author: Vincent Blavet <vincent@phpconcept.net> | +// +----------------------------------------------------------------------+ +// +// $Id: TTarFileExtractor.php 3188 2012-07-12 12:13:23Z ctrlaltca $ + +/** + * TTarFileExtractor class + * + * @author Vincent Blavet <vincent@phpconcept.net> + * @package System.IO + * @since 3.0 + */ +class TTarFileExtractor +{ + /** + * @var string Name of the Tar + */ + private $_tarname=''; + + /** + * @var file descriptor + */ + private $_file=0; + + /** + * @var string Local Tar name of a remote Tar (http:// or ftp://) + */ + private $_temp_tarname=''; + + /** + * Archive_Tar Class constructor. This flavour of the constructor only + * declare a new Archive_Tar object, identifying it by the name of the + * tar file. + * + * @param string $p_tarname The name of the tar archive to create + * @access public + */ + public function __construct($p_tarname) + { + $this->_tarname = $p_tarname; + } + + public function __destruct() + { + $this->_close(); + // ----- Look for a local copy to delete + if ($this->_temp_tarname != '') + @unlink($this->_temp_tarname); + } + + public function extract($p_path='') + { + return $this->extractModify($p_path, ''); + } + + /** + * This method extract all the content of the archive in the directory + * indicated by $p_path. When relevant the memorized path of the + * files/dir can be modified by removing the $p_remove_path path at the + * beginning of the file/dir path. + * While extracting a file, if the directory path does not exists it is + * created. + * While extracting a file, if the file already exists it is replaced + * without looking for last modification date. + * While extracting a file, if the file already exists and is write + * protected, the extraction is aborted. + * While extracting a file, if a directory with the same name already + * exists, the extraction is aborted. + * While extracting a directory, if a file with the same name already + * exists, the extraction is aborted. + * While extracting a file/directory if the destination directory exist + * and is write protected, or does not exist but can not be created, + * the extraction is aborted. + * If after extraction an extracted file does not show the correct + * stored file size, the extraction is aborted. + * When the extraction is aborted, a PEAR error text is set and false + * is returned. However the result can be a partial extraction that may + * need to be manually cleaned. + * + * @param string $p_path The path of the directory where the + * files/dir need to by extracted. + * @param string $p_remove_path Part of the memorized path that can be + * removed if present at the beginning of + * the file/dir path. + * @return boolean true on success, false on error. + * @access public + */ + protected function extractModify($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 $v_result; + } + + protected function _error($p_message) + { + throw new Exception($p_message); + } + + private function _isArchive($p_filename=null) + { + if ($p_filename == null) { + $p_filename = $this->_tarname; + } + clearstatcache(); + return @is_file($p_filename); + } + + private function _openRead() + { + if (strtolower(substr($this->_tarname, 0, 7)) == 'http://') { + + // ----- Look if a local copy need to be done + if ($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); + } + + // ----- File to open if the local copy + $v_filename = $this->_temp_tarname; + + } else + // ----- File to open if the normal Tar file + $v_filename = $this->_tarname; + + $this->_file = @fopen($v_filename, "rb"); + + if ($this->_file == 0) { + $this->_error('Unable to open in read mode \''.$v_filename.'\''); + return false; + } + + return true; + } + + private function _close() + { + //if (isset($this->_file)) { + if (is_resource($this->_file)) + { + @fclose($this->_file); + $this->_file = 0; + } + + // ----- Look if a local copy need to be erase + // Note that it might be interesting to keep the url for a time : ToDo + if ($this->_temp_tarname != '') { + @unlink($this->_temp_tarname); + $this->_temp_tarname = ''; + } + + return true; + } + + private function _cleanFile() + { + $this->_close(); + + // ----- Look for a local copy + if ($this->_temp_tarname != '') { + // ----- Remove the local copy but not the remote tarname + @unlink($this->_temp_tarname); + $this->_temp_tarname = ''; + } else { + // ----- Remove the local tarname file + @unlink($this->_tarname); + } + $this->_tarname = ''; + + return true; + } + + private function _readBlock() + { + $v_block = null; + if (is_resource($this->_file)) { + $v_block = @fread($this->_file, 512); + } + return $v_block; + } + + private function _jumpBlock($p_len=null) + { + if (is_resource($this->_file)) { + if ($p_len === null) + $p_len = 1; + + @fseek($this->_file, @ftell($this->_file)+($p_len*512)); + } + return true; + } + + private 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; + } + + // ----- Calculate the checksum + $v_checksum = 0; + // ..... First part of the header + for ($i=0; $i<148; $i++) + $v_checksum+=ord(substr($v_binary_data,$i,1)); + // ..... Ignore the checksum value and replace it by ' ' (space) + for ($i=148; $i<156; $i++) + $v_checksum += ord(' '); + // ..... Last part of the header + for ($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); + + // ----- Extract the checksum + $v_header['checksum'] = OctDec(trim($v_data['checksum'])); + if ($v_header['checksum'] != $v_checksum) { + $v_header['filename'] = ''; + + // ----- Look for last block (empty block) + if (($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; + } + + // ----- Extract the properties + $v_header['filename'] = trim($v_data['filename']); + $v_header['mode'] = OctDec(trim($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") { + $v_header['size'] = 0; + } + return true; + } + + private function _readLongHeader(&$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; + } + + // ----- Read the next header + $v_binary_data = $this->_readBlock(); + + if (!$this->_readHeader($v_binary_data, $v_header)) + return false; + + $v_header['filename'] = $v_filename; + + return true; + } + + protected function _extractList($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); + + // ----- Look for path to remove format (should end by /) + 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; + } + + // ----- Look for long filename + if ($v_header['typeflag'] == 'L') { + if (!$this->_readLongHeader($v_header)) + return false; + } + + if ((!$v_extract_all) && (is_array($p_file_list))) { + // ----- By default no unzip if the file is not found + $v_extract_file = false; + + for ($i=0; $i<sizeof($p_file_list); $i++) { + // ----- Look if it is a directory + if (substr($p_file_list[$i], -1) == '/') { + // ----- Look if the directory is in the filename path + if ((strlen($v_header['filename']) > strlen($p_file_list[$i])) + && (substr($v_header['filename'], 0, strlen($p_file_list[$i])) + == $p_file_list[$i])) { + $v_extract_file = true; + break; + } + } + + // ----- It is a file, so compare the file names + elseif ($p_file_list[$i] == $v_header['filename']) { + $v_extract_file = true; + break; + } + } + } else { + $v_extract_file = true; + } + + // ----- Look if this file need to be extracted + if (($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']) > $v_header['mtime']) { + // To be completed : An error or silent no replace ? + } + } + + // ----- Check the directory availability and create it if necessary + elseif (($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'], PRADO_CHMOD)) { + $this->_error('Unable to create directory {' + .$v_header['filename'].'}'); + return false; + } + chmod($v_header['filename'], PRADO_CHMOD); + } + } else { + if (($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($v_dest_file); + + // ----- Change the file mode, mtime + @touch($v_header['filename'], $v_header['mtime']); + // To be completed + //chmod($v_header[filename], DecOct($v_header[mode])); + } + + // ----- Check the file size + clearstatcache(); + if (filesize($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))); + } + + /* TBC : Seems to be unused ... + if ($this->_compress) + $v_end_of_file = @gzeof($this->_file); + else + $v_end_of_file = @feof($this->_file); + */ + + if ($v_listing || $v_extract_file || $v_extraction_stopped) { + // ----- Log extracted files + if (($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; + } + } + + return true; + } + + /** + * Check if a directory exists and create it (including parent + * dirs) if not. + * + * @param string $p_dir directory to check + * + * @return bool true if the directory exists or was created + */ + protected function _dirCheck($p_dir) + { + 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, PRADO_CHMOD)) { + $this->_error("Unable to create directory '$p_dir'"); + return false; + } + chmod($p_dir,PRADO_CHMOD); + + return true; + } + + protected function _translateWinPath($p_path, $p_remove_disk_letter=true) + { + if (substr(PHP_OS, 0, 3) == 'WIN') { + // ----- Look for potential disk letter + if ( ($p_remove_disk_letter) + && (($v_position = strpos($p_path, ':')) != false)) { + $p_path = substr($p_path, $v_position+1); + } + // ----- Change potential windows directory separator + if ((strpos($p_path, '\\') > 0) || (substr($p_path, 0,1) == '\\')) { + $p_path = strtr($p_path, '\\', '/'); + } + } + return $p_path; + } +} |