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<?php
/*
############################################################################
# DWmail
# - version 4.0
# - Copyright (c) 2003-2006 Dominion Web Design
# - http://www.dominion-web.com/products/dwmail/
############################################################################
#
# The contents of this file are subject to the DWmail License version
# 2.2 ('License'). You may not use this file except in compliance with
# the License. You may obtain a copy of the License at
# http://www.dominion-web.com/products/dwmail/license.php
# Software distributed under the License is distributed on an "AS IS" basis,
# without warranty of any kind, either express or implied.
#
# This code is Copyright (c) 2003-2006 Dominion Web Design.
# All rights reserved.
#
# This software may not be redistributed outside the terms of the
# license agreement.
#
############################################################################
*/
// Zip file creation utilities
// Based on infomation from http://www.zend.com/zend/spotlight/creating-zip-files1.php
// Requires Zlib
class ZipCreate {
var $dataarry = array();
var $maindir = array();
var $eofdir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $offset = 0;
function TimeConvert($unixtime = 0) {
if ($unixtime == 0) {
$timearry = getdate();
}
else {
$timearry = getdate($unixtime);
}
if ($timearry['year'] < 1980) {
$timearry['year'] = 1980;
$timearry['month'] = 1;
$timearry['mday'] = 1;
$timearry['hours'] = 0;
$timearry['minutes'] = 0;
$timearry['seconds'] = 0;
}
$formattedtime = (($timearry['year'] - 1980) << 25) | ($timearry['month'] << 21) | ($timearry['mday'] << 16) | ($timearry['hours'] << 11) | ($timearry['minutes'] << 5) | ($timearry['seconds'] >> 1);
return $formattedtime;
}
function AddFile($filedata, $filename, $time = 0) {
$filename = str_replace('\\', '/', $filename);
// Convert decimal to hexidecimal
$dtime = dechex($this->TimeConvert($time));
$hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');
$crc = crc32($filedata);
$origlen = strlen($filedata);
$filedata = gzcompress($filedata);
$filedata = substr(substr($filedata, 0, strlen($filedata) - 4), 2);
$compressedlen = strlen($filedata);
$filedetails = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00";
$filedetails .= $hexdtime;
$filedetails .= pack('V', $crc);
$filedetails .= pack('V', $compressedlen);
$filedetails .= pack('V', $origlen);
$filedetails .= pack('v', strlen($filename));
$filedetails .= pack('v', 0);
$filedetails .= $filename;
$filedetails .= $filedata;
unset ($filedata);
// This is a data descriptor code segment but appears to problems on some systems and zip decompressors so commented out
//$filedetails .= pack('V', $crc);
//$filedetails .= pack('V', $compressedlen);
//$filedetails .= pack('V', $origlen);
$this->dataarry[] = $filedetails;
$centralrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
$centralrec .= $hexdtime;
$centralrec .= pack('V', $crc);
$centralrec .= pack('V', $compressedlen);
$centralrec .= pack('V', $origlen);
$centralrec .= pack('v', strlen($filename));
$centralrec .= pack('v', 0);
$centralrec .= pack('v', 0);
$centralrec .= pack('v', 0);
$centralrec .= pack('v', 0);
$centralrec .= pack('V', 32);
$centralrec .= pack('V', $this->offset);
$this->offset += strlen($filedetails);
$centralrec .= $filename;
$this->maindir[] = $centralrec;
}
function GenerateZip() {
$data = implode('', $this->dataarry);
$rootdir = implode('', $this->maindir);
$output = $data . $rootdir . $this->eofdir .
pack('v', sizeof($this->maindir)) .
pack('v', sizeof($this->maindir)) .
pack('V', strlen($rootdir)) .
pack('V', strlen($data)) .
"\x00\x00";
return $output;
}
}
?>
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