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Further tidy ups for zip compatibility ... still seem to be problems deleting entries via Powerarchiver ... works fine under Linux

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git-svn-id: file:///svn/phpbb/trunk@4355 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Paul S. Owen 2003-08-09 12:36:14 +00:00
parent f41a46c92f
commit 5e79ac7d8f
1 changed files with 56 additions and 54 deletions
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110
phpBB/includes/functions_compress.php
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@ -1,23 +1,15 @@
<?
/***************************************************************************
* functions_compress.php
* -------------------
* begin : Saturday, Jul 19, 2003
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id$
*
***************************************************************************/
/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/
// -------------------------------------------------------------
//
// $Id$
//
// FILENAME : functions_compress.php
// STARTED : Sat Jul 19 2003
// COPYRIGHT : © 2003 phpBB Group
// WWW : http://www.phpbb.com/
// LICENCE : GPL vs2.0 [ see /docs/COPYING ]
//
// -------------------------------------------------------------
class compress
{
@ -29,13 +21,10 @@ class compress
$skip_files = explode(',', $skip_files);
// Remove prefix from src path
// Remove rm prefix from src path
$src_path = ($src_rm_prefix) ? preg_replace('#^(' . preg_quote($src_rm_prefix) . ')#', '', $src) : $src;
// Add prefix
if ($src_add_prefix)
{
$src_path = $src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path;
}
// Add src prefix
$src_path = ($src_add_prefix) ? ($src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path) : $src_path;
// Remove initial "/" if present
$src_path = (substr($src_path, 0, 1) == '/') ? substr($src_path, 1) : $src_path;
@ -58,7 +47,7 @@ class compress
$filelist = array();
$filelist = filelist($phpbb_root_path . $src, '', '*');
ksort($filelist);
krsort($filelist);
if ($src_path)
{
@ -99,8 +88,8 @@ class compress
}
}
// Zip creation class from phpMyAdmin 2.3.0 © Tobias Ratschiller, Olivier Müller, Loïc Chapeaux, Marc Delisle
// http://www.phpmyadmin.net/
// Zip creation class from phpMyAdmin 2.3.0 © Tobias Ratschiller, Olivier Müller, Loïc Chapeaux,
// Marc Delisle, http://www.phpmyadmin.net/
//
// Modified extensively by psoTFX, © phpBB Group, 2003
//
@ -110,7 +99,7 @@ class compress_zip extends compress
{
var $datasec = array();
var $ctrl_dir = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $eof_ctrl_dir = 0x06054b50;
var $old_offset = 0;
var $datasec_len = 0;
@ -258,6 +247,7 @@ class compress_zip extends compress
fclose($this->fp);
}
// Create the structures ... note we assume version made by is MSDOS
function data($name, $data, $mtime = false, $is_dir = false)
{
$name = str_replace('\\', '/', $name);
@ -278,25 +268,35 @@ class compress_zip extends compress
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
// Did we compress? No, then use data as is
if ($c_len > $unc_len)
{
$zdata = $data;
$c_len = $unc_len;
}
}
unset($data);
$fr = "\x50\x4b\x03\x04"; //
$fr .= "\x14\x00"; // ver needed to extract 4
$fr .= "\x00\x00"; // gen purpose bit flag 6
$fr .= "\x08\x00"; // compression method 8
$fr .= $hexdtime; // last mod time and date 10
$fr .= pack('V', $crc); // crc32 14
$fr .= pack('V', $c_len); // compressed filesize 18
$fr .= pack('V', $unc_len); // uncompressed filesize 22
$fr .= pack('v', strlen($name));// length of filename 26
$fr .= pack('v', 0); // extra field length 28
$fr .= $name; // 30
// If we didn't compress set method to store, else deflate
$c_method = ($c_len == $unc_len) ? "\x00\x00" : "\x08\x00";
$fr = "\x50\x4b\x03\x04"; // Local file header 4bytes
$fr .= "\x14\x00"; // ver needed to extract 2bytes
$fr .= "\x00\x00"; // gen purpose bit flag 2bytes
$fr .= $c_method; // compression method 2bytes
$fr .= $hexdtime; // last mod time and date 2+2bytes
$fr .= pack('V', $crc); // crc32 4bytes
$fr .= pack('V', $c_len); // compressed filesize 4bytes
$fr .= pack('V', $unc_len); // uncompressed filesize 4bytes
$fr .= pack('v', strlen($name));// length of filename 2bytes
$fr .= pack('v', 0); // extra field length 2bytes
$fr .= $name;
$fr .= $zdata;
unset($zdata);
$fr .= pack('V', $crc);
$fr .= pack('V', $c_len); // compressed filesize
$fr .= pack('V', $unc_len); // uncompressed filesize
$fr .= pack('V', $crc); // crc32 4bytes
$fr .= pack('V', $c_len); // compressed filesize 4bytes
$fr .= pack('V', $unc_len); // uncompressed filesize 4bytes
$this->datasec_len += strlen($fr);
@ -308,15 +308,15 @@ class compress_zip extends compress
// Are we a file or a directory? Set archive for file
$attrib = ($is_dir) ? 16 : 32;
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x14\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= "\x08\x00"; // compression method
$cdrec .= $hexdtime; // last mod time & date
$cdrec .= pack('V', $crc); // crc32
$cdrec .= pack('V', $c_len); // compressed filesize
$cdrec .= pack('V', $unc_len); // uncompressed filesize
$cdrec = "\x50\x4b\x01\x02"; // header 4bytes
$cdrec .= "\x00\x00"; // version made by
$cdrec .= "\x14\x00"; // version needed to extract
$cdrec .= "\x00\x00"; // gen purpose bit flag
$cdrec .= $c_method; // compression method
$cdrec .= $hexdtime; // last mod time & date
$cdrec .= pack('V', $crc); // crc32
$cdrec .= pack('V', $c_len); // compressed filesize
$cdrec .= pack('V', $unc_len); // uncompressed filesize
$cdrec .= pack('v', strlen($name)); // length of filename
$cdrec .= pack('v', 0); // extra field length
$cdrec .= pack('v', 0); // file comment length
@ -335,13 +335,15 @@ class compress_zip extends compress
function file()
{
$ctrldir = implode('', $this->ctrl_dir);
$comment = 'Created by phpBB 2.2';
return $ctrldir . $this->eof_ctrl_dir .
return $ctrldir . "\x50\x4b\x05\x06\x00\x00\x00\x00" .
pack('v', sizeof($this->ctrl_dir)) . // total # of entries "on this disk"
pack('v', sizeof($this->ctrl_dir)) . // total # of entries overall
pack('V', strlen($ctrldir)) . // size of central dir
pack('V', $this->datasec_len) . // offset to start of central dir
"\x00\x00"; // .zip file comment length
pack('v', strlen($comment)) . // .zip file comment length
$comment;
}
}