www.gusucode.com > Destoon B2B仿淘宝电子商务网站 UTF8 v6.0源码程序 > destoon/admin/unzip.class.php
<?php
/*
[Destoon B2B System] Copyright (c) 2008-2013 Destoon.COM
This is NOT a freeware, use is subject to license.txt
*/
defined('IN_DESTOON') or exit('Access Denied');
class unzip {
var $datasec = array();
var $ctrl_dir = array();
var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
var $old_offset = 0;
function extract_zip($zipfile, $dir) {
if(function_exists('zip_open')) {
$zip = zip_open($zipfile);
if($zip) {
while($zip_entry = zip_read($zip)) {
if(zip_entry_filesize($zip_entry) > 0) {
if(zip_entry_open($zip, $zip_entry, "r")) {
$buf = zip_entry_read($zip_entry, zip_entry_filesize($zip_entry));
zip_entry_close($zip_entry);
file_put($dir.'/'.zip_entry_name($zip_entry), $buf);
}
} else {
dir_create($dir.'/'.zip_entry_name($zip_entry));
}
}
zip_close($zip);
}
} else {
$array = $this->list_zip($zipfile);
$count = count($array);
$f = 0;
$d = 0;
for($i = 0; $i < $count; $i++) {
if($array[$i]['folder'] == 0) {
if($this->extract_file($zipfile, $dir, $i) > 0) $f++;
} else {
$d++;
}
}
}
return true;
}
function list_zip($zip_name) {
$zip = @fopen($zip_name, 'rb');
if(!$zip) return 0;
$centd = $this->rc_dir($zip, $zip_name);
@rewind($zip);
@fseek($zip, $centd['offset']);
$ret = array();
for($i = 0; $i < $centd['entries']; $i++) {
$header = $this->rcf_header($zip);
$header['index'] = $i;
$info['filename'] = $header['filename'];
$info['stored_filename'] = $header['stored_filename'];
$info['size'] = $header['size'];
$info['compressed_size'] = $header['compressed_size'];
$info['crc'] = strtoupper(dechex( $header['crc']));
$info['mtime'] = $header['mtime'];
$info['comment'] = $header['comment'];
$info['folder'] = ($header['external'] == 0x41FF0010 || $header['external'] == 16) ? 1 : 0;
$info['index'] = $header['index'];
$info['status'] = $header['status'];
$ret[] = $info;
unset($header);
}
return $ret;
}
function extract_file($zn, $to, $index = array(-1)) {
$ok = 0;
$zip = @fopen($zn,'rb');
if(!$zip) return -1;
$cdir = $this->rc_dir($zip,$zn);
$pos_entry = $cdir['offset'];
if(!is_array($index)) $index = array($index);
for($i = 0; isset($index[$i]); $i++) {
if(intval($index[$i]) != $index[$i] || $index[$i] > $cdir['entries']) return -1;
}
for($i = 0; $i < $cdir['entries']; $i++) {
@fseek($zip, $pos_entry);
$header = $this->rcf_header($zip);
$header['index'] = $i;
$pos_entry = ftell($zip);
@rewind($zip);
fseek($zip, $header['offset']);
if(in_array("-1",$index) || in_array($i,$index)) $stat[$header['filename']] = $this->uncompress($header, $to, $zip);
}
fclose($zip);
return $stat;
}
function rf_header($zip) {
$binary_data = fread($zip, 30);
$data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
$header['filename'] = fread($zip, $data['filename_len']);
$header['extra'] = $data['extra_len'] != 0 ? fread($zip, $data['extra_len']) : '';
$header['compression'] = $data['compression'];
$header['size'] = $data['size'];
$header['compressed_size'] = $data['compressed_size'];
$header['crc'] = $data['crc'];
$header['flag'] = $data['flag'];
$header['mdate'] = $data['mdate'];
$header['mtime'] = $data['mtime'];
if($header['mdate'] && $header['mtime']) {
$hour = ($header['mtime'] & 0xF800) >> 11;
$minute = ($header['mtime'] & 0x07E0) >> 5;
$seconde = ($header['mtime'] & 0x001F)*2;
$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
$month = ($header['mdate'] & 0x01E0) >> 5;
$day = $header['mdate'] & 0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
} else {
$header['mtime'] = time();
}
$header['stored_filename'] = $header['filename'];
$header['status'] = "ok";
return $header;
}
function rcf_header($zip) {
$binary_data = fread($zip, 46);
$header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
$header['filename'] = $header['filename_len'] != 0 ? fread($zip,$header['filename_len']) : '';
$header['extra'] = $header['extra_len'] != 0 ? fread($zip, $header['extra_len']) : '';
$header['comment'] = $header['comment_len'] != 0 ? fread($zip, $header['comment_len']): '';
if($header['mdate'] && $header['mtime']) {
$hour = ($header['mtime'] & 0xF800) >> 11;
$minute = ($header['mtime'] & 0x07E0) >> 5;
$seconde = ($header['mtime'] & 0x001F)*2;
$year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
$month = ($header['mdate'] & 0x01E0) >> 5;
$day = $header['mdate'] & 0x001F;
$header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
} else {
$header['mtime'] = time();
}
$header['stored_filename'] = $header['filename'];
$header['status'] = 'ok';
if(substr($header['filename'], -1) == '/') $header['external'] = 0x41FF0010;
return $header;
}
function rc_dir($zip, $zip_name) {
$size = filesize($zip_name);
$maximum_size = $size < 277 ? $size : 277;
@fseek($zip, $size-$maximum_size);
$pos = ftell($zip);
$bytes = 0x00000000;
while($pos < $size) {
$byte = @fread($zip, 1);
$bytes = ($bytes << 8) | Ord($byte);
$pos++;
if($bytes == 0x504b0506) break;
}
$data = unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size', fread($zip, 18));
$centd['comment'] = $data['comment_size'] != 0 ? fread($zip, $data['comment_size']) : '';
$centd['entries'] = $data['entries'];
$centd['disk_entries'] = $data['disk_entries'];
$centd['offset'] = $data['offset'];
$centd['disk_start'] = $data['disk_start'];
$centd['size'] = $data['size'];
$centd['disk'] = $data['disk'];
return $centd;
}
function uncompress($header, $to, $zip) {
$header = $this->rf_header($zip);
if(substr($to, -1) != "/") $to .= "/";
if(!is_dir($to)) dir_create($to);
$pth = explode("/", dirname($header['filename']));
$pthss = '';
for($i = 0; isset($pth[$i]); $i++) {
if(!$pth[$i]) continue;
$pthss .= $pth[$i]."/";
if(!is_dir($to.$pthss)) dir_create($to.$pthss);
}
isset($header['external']) or $header['external'] = '';
if(!($header['external'] == 0x41FF0010) && !($header['external'] == 16)) {
if($header['compression'] == 0) {
$fp = @fopen($to.$header['filename'], 'wb');
if(!$fp) return -1;
$size = $header['compressed_size'];
while($size != 0) {
$read_size = $size < 2048 ? $size : 2048;
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
fclose($fp);
touch($to.$header['filename'], $header['mtime']);
} else {
$fp = @fopen($to.$header['filename'].'.gz', 'wb');
if(!$fp) return -1;
$binary_data = pack('va1a1Va1a1', 0x8b1f, chr($header['compression']), chr(0x00), time(), chr(0x00), chr(3));
fwrite($fp, $binary_data, 10);
$size = $header['compressed_size'];
while($size != 0) {
$read_size = $size < 1024 ? $size : 1024;
$buffer = fread($zip, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
$binary_data = pack('VV', $header['crc'], $header['size']);
fwrite($fp, $binary_data, 8);
fclose($fp);
$gzp = @gzopen($to.$header['filename'].'.gz', 'rb') or die('Can Not gzopen File');
if(!$gzp) return -2;
$fp = @fopen($to.$header['filename'], 'wb');
if(!$fp) return -1;
$size = $header['size'];
while($size != 0) {
$read_size = $size < 2048 ? $size : 2048;
$buffer = gzread($gzp, $read_size);
$binary_data = pack('a'.$read_size, $buffer);
@fwrite($fp, $binary_data, $read_size);
$size -= $read_size;
}
fclose($fp);
gzclose($gzp);
touch($to.$header['filename'], $header['mtime']);
@unlink($to.$header['filename'].'.gz');
}
}
return true;
}
}
?>