--- /dev/null
+<?php
+/* vim: set ts=4 sw=4: */
+// +----------------------------------------------------------------------+
+// | PHP Version 4 |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1997-2002 The PHP Group |
+// +----------------------------------------------------------------------+
+// | This source file is subject to version 2.02 of the PHP license, |
+// | that is bundled with this package in the file LICENSE, and is |
+// | available at through the world-wide-web at |
+// | http://www.php.net/license/2_02.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. |
+// +----------------------------------------------------------------------+
+// | Authors: Vincent Blavet <vincent@blavet.net> |
+// +----------------------------------------------------------------------+
+//
+// $Id$
+
+require_once 'PEAR.php';
+
+/**
+* Creates a (compressed) Tar archive
+*
+* @author Vincent Blavet <vincent@blavet.net>
+* @version $Revision$
+* @package Archive
+*/
+class Archive_Tar extends PEAR
+{
+ /**
+ * @var string Name of the Tar
+ */
+ var $_tarname='';
+
+ /**
+ * @var boolean if true, the Tar file will be gzipped
+ */
+ var $_compress=false;
+
+ /**
+ * @var file descriptor
+ */
+ var $_file=0;
+
+ // {{{ constructor
+ /**
+ * 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.
+ * If the compress argument is set the tar will be read or created as a
+ * gzip compressed TAR file.
+ *
+ * @param string $p_tarname The name of the tar archive to create
+ * @param boolean $p_compress if true, the archive will be gezip(ped)
+ * @access public
+ */
+ function Archive_Tar($p_tarname, $p_compress = false)
+ {
+ $this->PEAR();
+ $this->_tarname = $p_tarname;
+ if ($p_compress) { // assert zlib extension support
+ $extname = 'zlib';
+ if (!extension_loaded($extname)) {
+ $dlext = (OS_WINDOWS) ? '.dll' : '.so';
+ @dl($extname . $dlext);
+ }
+ if (!extension_loaded($extname)) {
+ die("The extension '$extname' couldn't be loaded. ".
+ 'Probably you don\'t have support in your PHP '.
+ 'to this extension');
+ return false;
+ }
+ }
+ $this->_compress = $p_compress;
+ }
+ // }}}
+
+ // {{{ destructor
+ function _Archive_Tar()
+ {
+ $this->_close();
+ $this->_PEAR();
+ }
+ // }}}
+
+ // {{{ create()
+ /**
+ * This method creates the archive file and add the files / directories
+ * that are listed in $p_filelist.
+ * If the file already exists and is writable, it is replaced by the
+ * new tar. It is a create and not an add. If the file exists and is
+ * read-only or is a directory it is not replaced. The method return
+ * false and a PEAR error text.
+ * The $p_filelist parameter can be an array of string, each string
+ * representing a filename or a directory name with their path if
+ * needed. It can also be a single string with names separated by a
+ * single blank.
+ * See also createModify() method for more details.
+ *
+ * @param array $p_filelist An array of filenames and directory names, or a single
+ * string with names separated by a single blank space.
+ * @return true on success, false on error.
+ * @see createModify()
+ * @access public
+ */
+ function create($p_filelist)
+ {
+ return $this->createModify($p_filelist, '', '');
+ }
+ // }}}
+
+ // {{{ add()
+ function add($p_filelist)
+ {
+ return $this->addModify($p_filelist, '', '');
+ }
+ // }}}
+
+ // {{{ extract()
+ function extract($p_path='')
+ {
+ return $this->extractModify($p_path, '');
+ }
+ // }}}
+
+ // {{{ listContent()
+ function listContent()
+ {
+ $v_list_detail = array();
+
+ if ($this->_openRead()) {
+ if (!$this->_extractList('', $v_list_detail, "list", '', '')) {
+ unset($v_list_detail);
+ return(0);
+ }
+ $this->_close();
+ }
+
+ return $v_list_detail;
+ }
+ // }}}
+
+ // {{{ createModify()
+ /**
+ * This method creates the archive file and add the files / directories
+ * that are listed in $p_filelist.
+ * If the file already exists and is writable, it is replaced by the
+ * new tar. It is a create and not an add. If the file exists and is
+ * read-only or is a directory it is not replaced. The method return
+ * false and a PEAR error text.
+ * The $p_filelist parameter can be an array of string, each string
+ * representing a filename or a directory name with their path if
+ * needed. It can also be a single string with names separated by a
+ * single blank.
+ * The path indicated in $p_remove_dir will be removed from the
+ * memorized path of each file / directory listed when this path
+ * exists. By default nothing is removed (empty path '')
+ * The path indicated in $p_add_dir will be added at the beginning of
+ * the memorized path of each file / directory listed. However it can
+ * be set to empty ''. The adding of a path is done after the removing
+ * of path.
+ * The path add/remove ability enables the user to prepare an archive
+ * for extraction in a different path than the origin files are.
+ * See also addModify() method for file adding properties.
+ *
+ * @param array $p_filelist An array of filenames and directory names, or a single
+ * string with names separated by a single blank space.
+ * @param string $p_add_dir A string which contains a path to be added to the
+ * memorized path of each element in the list.
+ * @param string $p_remove_dir A string which contains a path to be removed from
+ * the memorized path of each element in the list, when
+ * relevant.
+ * @return boolean true on success, false on error.
+ * @access public
+ * @see addModify()
+ */
+ function createModify($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(" ", $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;
+ }
+ // }}}
+
+ // {{{ addModify()
+ /**
+ * This method add the files / directories listed in $p_filelist at the
+ * end of the existing archive. If the archive does not yet exists it
+ * is created.
+ * The $p_filelist parameter can be an array of string, each string
+ * representing a filename or a directory name with their path if
+ * needed. It can also be a single string with names separated by a
+ * single blank.
+ * The path indicated in $p_remove_dir will be removed from the
+ * memorized path of each file / directory listed when this path
+ * exists. By default nothing is removed (empty path '')
+ * The path indicated in $p_add_dir will be added at the beginning of
+ * the memorized path of each file / directory listed. However it can
+ * be set to empty ''. The adding of a path is done after the removing
+ * of path.
+ * The path add/remove ability enables the user to prepare an archive
+ * for extraction in a different path than the origin files are.
+ * If a file/dir is already in the archive it will only be added at the
+ * end of the archive. There is no update of the existing archived
+ * file/dir. However while extracting the archive, the last file will
+ * replace the first one. This results in a none optimization of the
+ * archive size.
+ * If a file/dir does not exist the file/dir is ignored. However an
+ * error text is send to PEAR error.
+ * If a file/dir is not readable the file/dir is ignored. However an
+ * error text is send to PEAR error.
+ * If the resulting filename/dirname (after the add/remove option or
+ * not) string is greater than 99 char, the file/dir is
+ * ignored. However an error text is send to PEAR error.
+ *
+ * @param array $p_filelist An array of filenames and directory names, or a single
+ * string with names separated by a single blank space.
+ * @param string $p_add_dir A string which contains a path to be added to the
+ * memorized path of each element in the list.
+ * @param string $p_remove_dir A string which contains a path to be removed from
+ * the memorized path of each element in the list, when
+ * relevant.
+ * @return true on success, false on error.
+ * @access public
+ */
+ function addModify($p_filelist, $p_add_dir, $p_remove_dir='')
+ {
+ $v_result = true;
+
+ if (!@is_file($this->_tarname))
+ $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(" ", $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;
+ }
+ // }}}
+
+ // {{{ extractModify()
+ /**
+ * 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 $p_remove_path Part of the memorized path that can be removed if
+ * present at the beginning of the file/dir path.
+ * @return boolean true on success, false on error.
+ * @access public
+ * @see extractList()
+ */
+ function extractModify($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;
+ }
+ // }}}
+
+ // {{{ extractList()
+ /**
+ * This method extract from the archive only the files indicated in the
+ * $p_filelist. These files are extracted in the current directory or
+ * in the directory indicated by the optional $p_path parameter.
+ * If indicated the $p_remove_path can be used in the same way as it is
+ * used in extractModify() method.
+ * @param array $p_filelist An array of filenames and directory names, or a single
+ * string with names separated by a single blank space.
+ * @param string $p_path The path of the directory where the files/dir need to by
+ * extracted.
+ * @param string $p_remove_path Part of the memorized path that can be removed if
+ * present at the beginning of the file/dir path.
+ * @return true on success, false on error.
+ * @access public
+ * @see extractModify()
+ */
+ function extractList($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(" ", $p_filelist);
+ else {
+ $this->_error('Invalid string list');
+ return false;
+ }
+
+ if ($v_result = $this->_openRead()) {
+ $v_result = $this->_extractList($p_path, $v_list_detail, "complete", $v_list, $p_remove_path);
+ $this->_close();
+ }
+
+ return $v_result;
+ }
+ // }}}
+
+ // {{{ _error()
+ function _error($p_message)
+ {
+ // ----- To be completed
+ $this->raiseError($p_message);
+ }
+ // }}}
+
+ // {{{ _warning()
+ function _warning($p_message)
+ {
+ // ----- To be completed
+ $this->raiseError($p_message);
+ }
+ // }}}
+
+ // {{{ _openWrite()
+ function _openWrite()
+ {
+ if ($this->_compress)
+ $this->_file = @gzopen($this->_tarname, "w");
+ else
+ $this->_file = @fopen($this->_tarname, "w");
+
+ if ($this->_file == 0) {
+ $this->_error('Unable to open in write mode \''.$this->_tarname.'\'');
+ return false;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _openRead()
+ function _openRead()
+ {
+ if ($this->_compress)
+ $this->_file = @gzopen($this->_tarname, "rb");
+ else
+ $this->_file = @fopen($this->_tarname, "rb");
+
+ if ($this->_file == 0) {
+ $this->_error('Unable to open in read mode \''.$this->_tarname.'\'');
+ return false;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _openReadWrite()
+ function _openReadWrite()
+ {
+ if ($this->_compress)
+ $this->_file = @gzopen($this->_tarname, "r+b");
+ else
+ $this->_file = @fopen($this->_tarname, "r+b");
+
+ if ($this->_file == 0) {
+ $this->_error('Unable to open in read/write mode \''.$this->_tarname.'\'');
+ return false;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _close()
+ function _close()
+ {
+ if (isset($this->_file)) {
+ if ($this->_compress)
+ @gzclose($this->_file);
+ else
+ @fclose($this->_file);
+
+ $this->_file = 0;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _cleanFile()
+ function _cleanFile()
+ {
+ _close();
+ @unlink($this->tarname);
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _writeFooter()
+ function _writeFooter()
+ {
+ if ($this->_file) {
+ // ----- Write the last 0 filled block for end of archive
+ $v_binary_data = pack("a512", '');
+ if ($this->_compress)
+ @gzputs($this->_file, $v_binary_data);
+ else
+ @fputs($this->_file, $v_binary_data);
+ }
+ return true;
+ }
+ // }}}
+
+ // {{{ _addList()
+ function _addList($p_list, $p_add_dir, $p_remove_dir)
+ {
+ $v_result=true;
+ $v_header = array();
+
+ if (!$this->_file) {
+ $this->_error('Invalid file descriptor');
+ return false;
+ }
+
+ if (sizeof($p_list) == 0)
+ return true;
+
+ for ($j=0; ($j<count($p_list)) && ($v_result); $j++) {
+ $v_filename = $p_list[$j];
+
+ // ----- Skip the current tar name
+ if ($v_filename == $this->_tarname)
+ continue;
+
+ if ($v_filename == '')
+ continue;
+
+ if (!file_exists($v_filename)) {
+ $this->_warning("File '$v_filename' does not exist");
+ continue;
+ }
+
+ // ----- Add the file or directory header
+ 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;
+ }
+ $p_hitem = readdir($p_hdir); // '.' directory
+ $p_hitem = readdir($p_hdir); // '..' directory
+ while ($p_hitem = readdir($p_hdir)) {
+ 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 $v_result;
+ }
+ // }}}
+
+ // {{{ _addFile()
+ function _addFile($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;
+ }
+
+ // ----- Calculate the stored filename
+ $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($p_remove_dir));
+ }
+ if ($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;
+ }
+
+ if (strlen($v_stored_filename) > 99) {
+ $this->_warning("Stored file name is too long (max. 99) : '$v_stored_filename'");
+ fclose($v_file);
+ return true;
+ }
+
+ if (is_file($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");
+ if ($this->_compress)
+ @gzputs($this->_file, $v_binary_data);
+ else
+ @fputs($this->_file, $v_binary_data);
+ }
+
+ fclose($v_file);
+
+ } else {
+ // ----- Only header for dir
+ if (!$this->_writeHeader($p_filename, $v_stored_filename))
+ return false;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _writeHeader()
+ function _writeHeader($p_filename, $p_stored_filename)
+ {
+ if ($p_stored_filename == '')
+ $p_stored_filename = $p_filename;
+ $v_reduce_filename = $this->_pathReduction($p_stored_filename);
+
+ $v_info = stat($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, '');
+
+ // ----- Calculate the checksum
+ $v_checksum = 0;
+ // ..... First part of the header
+ for ($i=0; $i<148; $i++)
+ $v_checksum += ord(substr($v_binary_data_first,$i,1));
+ // ..... Ignore the checksum value and replace it by ' ' (space)
+ for ($i=148; $i<156; $i++)
+ $v_checksum += ord(' ');
+ // ..... Last part of the header
+ for ($i=156, $j=0; $i<512; $i++, $j++)
+ $v_checksum += ord(substr($v_binary_data_last,$j,1));
+
+ // ----- Write the first 148 bytes of the header in the archive
+ if ($this->_compress)
+ @gzputs($this->_file, $v_binary_data_first, 148);
+ else
+ @fputs($this->_file, $v_binary_data_first, 148);
+
+ // ----- Write the calculated checksum
+ $v_checksum = sprintf("%6s ", DecOct($v_checksum));
+ $v_binary_data = pack("a8", $v_checksum);
+ if ($this->_compress)
+ @gzputs($this->_file, $v_binary_data, 8);
+ else
+ @fputs($this->_file, $v_binary_data, 8);
+
+ // ----- Write the last 356 bytes of the header in the archive
+ if ($this->_compress)
+ @gzputs($this->_file, $v_binary_data_last, 356);
+ else
+ @fputs($this->_file, $v_binary_data_last, 356);
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _readHeader()
+ function _readHeader($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;
+
+ $this->_error('Invalid checksum : '.$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;
+ }
+ /* ----- All these fields are removed form the header because they do not carry interesting info
+ $v_header[link] = trim($v_data[link]);
+ $v_header[magic] = trim($v_data[magic]);
+ $v_header[version] = trim($v_data[version]);
+ $v_header[uname] = trim($v_data[uname]);
+ $v_header[gname] = trim($v_data[gname]);
+ $v_header[devmajor] = trim($v_data[devmajor]);
+ $v_header[devminor] = trim($v_data[devminor]);
+ */
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _extractList()
+ 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;
+ $v_listing = false;
+
+ if ($p_path == '' || (substr($p_path, 0, 1) != '/' && substr($p_path, 0, 3) != "../" && substr($p_path, 1, 3) != ":\\")) {
+ $p_path = "./".$p_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 (!($v_end_of_file = ($this->_compress?@gzeof($this->_file):@feof($this->_file))))
+ {
+ $v_extract_file = FALSE;
+ $v_extraction_stopped = 0;
+
+ if ($this->_compress)
+ $v_binary_data = @gzread($this->_file, 512);
+ else
+ $v_binary_data = @fread($this->_file, 512);
+
+ if (!$this->_readHeader($v_binary_data, $v_header))
+ return false;
+
+ if ($v_header['filename'] == '')
+ continue;
+
+ 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 ((is_file($v_header['filename'])) && ($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'], 0777)) {
+ $this->_error('Unable to create directory {'.$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; $i++) {
+ if ($this->_compress)
+ $v_content = @gzread($this->_file, 512);
+ else
+ $v_content = @fread($this->_file, 512);
+ fwrite($v_dest_file, $v_content, 512);
+ }
+ if (($v_header['size'] % 512) != 0) {
+ if ($this->_compress)
+ $v_content = @gzread($this->_file, 512);
+ else
+ $v_content = @fread($this->_file, 512);
+ 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($v_filename).'\' ('.$v_header['size'].' expected). Archive may be corrupted.');
+ return false;
+ }
+ }
+ } else {
+ // ----- Jump to next file
+ if ($this->_compress)
+ @gzseek($this->_file, @gztell($this->_file)+(ceil(($v_header['size']/512))*512));
+ else
+ @fseek($this->_file, @ftell($this->_file)+(ceil(($v_header['size']/512))*512));
+ }
+ } else {
+ // ----- Jump to next file
+ if ($this->_compress)
+ @gzseek($this->_file, @gztell($this->_file)+(ceil(($v_header['size']/512))*512));
+ else
+ @fseek($this->_file, @ftell($this->_file)+(ceil(($v_header['size']/512))*512));
+ }
+
+ 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++] = $v_header;
+ }
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _append()
+ function _append($p_filelist, $p_add_dir='', $p_remove_dir='')
+ {
+ if ($this->_compress) {
+ $this->_close();
+
+ if (!@rename($this->_tarname, $this->_tarname.".tmp")) {
+ $this->_error('Error while renaming \''.$this->_tarname.'\' to temporary file \''.$this->_tarname.'.tmp\'');
+ return false;
+ }
+
+ if (($v_temp_tar = @gzopen($this->_tarname.".tmp", "rb")) == 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;
+ }
+
+ $v_buffer = @gzread($v_temp_tar, 512);
+
+ // ----- Read the following blocks but not the last one
+ if (!@gzeof($v_temp_tar)) {
+ do{
+ $v_binary_data = pack("a512", "$v_buffer");
+ @gzputs($this->_file, $v_binary_data);
+ $v_buffer = @gzread($v_temp_tar, 512);
+
+ } while (!@gzeof($v_temp_tar));
+ }
+
+ if ($this->_addList($p_filelist, $p_add_dir, $p_remove_dir))
+ $this->_writeFooter();
+
+ $this->_close();
+ @gzclose($v_temp_tar);
+
+ if (!@unlink($this->_tarname.".tmp")) {
+ $this->_error('Error while deleting temporary file \''.$this->_tarname.'.tmp\'');
+ }
+
+ return true;
+ }
+
+ // ----- For not compressed tar, just add files before the last 512 bytes block
+ if (!$this->_openReadWrite())
+ return false;
+
+ clearstatcache();
+ $v_size = filesize($this->_tarname);
+ fseek($this->_file, $v_size-512);
+
+ if ($this->_addList($p_filelist, $p_add_dir, $p_remove_dir))
+ $this->_writeFooter();
+
+ $this->_close();
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _dirCheck()
+ function _dirCheck($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, 0777)) {
+ $this->_error("Unable to create directory '$p_dir'");
+ return false;
+ }
+
+ return true;
+ }
+ // }}}
+
+ // {{{ _pathReduction()
+ function _pathReduction($p_dir)
+ {
+ $v_result = '';
+
+ // ----- Look for not empty path
+ if ($p_dir != '') {
+ // ----- Explode path by directory names
+ $v_list = explode('/', $p_dir);
+
+ // ----- Study directories from last to first
+ for ($i=sizeof($v_list)-1; $i>=0; $i--) {
+ // ----- Look for current path
+ if ($v_list[$i] == ".") {
+ // ----- Ignore this directory
+ // Should be the first $i=0, but no check is done
+ }
+ else if ($v_list[$i] == "..") {
+ // ----- Ignore it and ignore the $i-1
+ $i--;
+ }
+ else if (($v_list[$i] == '') && ($i!=(sizeof($v_list)-1)) && ($i!=0)) {
+ // ----- Ignore only the double '//' in path,
+ // but not the first and last '/'
+ } else {
+ $v_result = $v_list[$i].($i!=(sizeof($v_list)-1)?'/'.$v_result:'');
+ }
+ }
+ }
+ return $v_result;
+ }
+ // }}}
+
+}
+?>
\ No newline at end of file
projects / php / commitdiff