You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
389 lines
12 KiB
389 lines
12 KiB
<?php
|
|
|
|
/**
|
|
* ZIP压缩与解压
|
|
*/
|
|
|
|
namespace libraries;
|
|
|
|
class Zip
|
|
{
|
|
protected $datasec = array();
|
|
protected $ctrl_dir = array();
|
|
protected $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
|
|
protected $old_offset = 0;
|
|
|
|
protected $total_files = 0;
|
|
protected $total_folders = 0;
|
|
|
|
/**
|
|
* 压缩目录
|
|
* @param string $zip_filename 文件名
|
|
* @param string $dir 压缩目录
|
|
* @param string $path_replace 替换目录
|
|
* @return boolean
|
|
*/
|
|
public function compress($zip_filename='cp.zip', $dir='./', $path_replace='')
|
|
{
|
|
if (function_exists('gzcompress'))
|
|
{
|
|
$filelist = $this->GetFileList($dir);
|
|
|
|
if (count($filelist)>0)
|
|
{
|
|
foreach($filelist as $filename)
|
|
{
|
|
if (is_file($filename))
|
|
{
|
|
$fd = fopen ($filename, "r");
|
|
$content = fread($fd, filesize ($filename));
|
|
fclose ($fd);
|
|
$this->addFile($content, str_replace($path_replace, '',$filename));
|
|
}
|
|
}
|
|
$out = $this->file();
|
|
$fp = fopen($zip_filename, "w");
|
|
fwrite($fp, $out, strlen($out));
|
|
fclose($fp);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 解压文件
|
|
* @param string $zip_filename 解压文件
|
|
* @param string $dir 解压目录
|
|
* @return boolean
|
|
*/
|
|
public function decompress($zip_filename='cp.zip', $dir='./')
|
|
{
|
|
$index = array(-1);
|
|
$ok = 0;
|
|
$zip_fp = @fopen($zip_filename,'rb');
|
|
if(!$zip_fp)
|
|
return false;
|
|
|
|
$cdir = $this->ReadCentralDir($zip_fp,$zip_filename);
|
|
$pos_entry = $cdir['offset'];
|
|
|
|
if(!is_array($index))
|
|
{
|
|
$index = array($index);
|
|
}
|
|
for($i=0; $index[$i];$i++)
|
|
{
|
|
if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])
|
|
return false;
|
|
}
|
|
for ($i=0; $i<$cdir['entries']; $i++)
|
|
{
|
|
@fseek($zip_fp, $pos_entry);
|
|
$header = $this->ReadCentralFileHeaders($zip_fp);
|
|
$header['index'] = $i;
|
|
$pos_entry = ftell($zip_fp);
|
|
@rewind($zip_fp);
|
|
fseek($zip_fp, $header['offset']);
|
|
if(in_array("-1",$index)||in_array($i,$index))
|
|
$stat[$header['filename']]=$this->ExtractFile($header, $dir, $zip_fp);
|
|
}
|
|
fclose($zip_fp);
|
|
return $stat;
|
|
}
|
|
|
|
private function GetFileList($dir)
|
|
{
|
|
$file=array();
|
|
if (file_exists($dir))
|
|
{
|
|
|
|
if( substr( $dir, -1 ) != "/" )
|
|
{
|
|
$dir .= "/";
|
|
}
|
|
|
|
|
|
$dh = opendir($dir);
|
|
while($files = readdir($dh)) {
|
|
if (($files!=".")&&($files!=".."))
|
|
{
|
|
if (is_dir($dir.$files))
|
|
{
|
|
$file = array_merge($file, $this -> GetFileList( $dir.$files ));
|
|
}
|
|
else $file[]= $dir.$files;
|
|
}
|
|
}
|
|
closedir($dh);
|
|
}
|
|
$file[] = '';
|
|
return $file;
|
|
}
|
|
|
|
private function unix2DosTime($unixtime = 0) {
|
|
$timearray = ($unixtime == 0) ? getdate() : getdate($unixtime);
|
|
if ($timearray['year'] < 1980) {
|
|
$timearray['year'] = 1980;
|
|
$timearray['mon'] = 1;
|
|
$timearray['mday'] = 1;
|
|
$timearray['hours'] = 0;
|
|
$timearray['minutes'] = 0;
|
|
$timearray['seconds'] = 0;
|
|
}
|
|
return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) |
|
|
($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1);
|
|
}
|
|
|
|
private function addFile($data, $name, $time = 0) {
|
|
$name = str_replace('\\', '/', $name);
|
|
$dtime = dechex($this->unix2DosTime($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 . '";');
|
|
|
|
$fr = "\x50\x4b\x03\x04";
|
|
$fr .= "\x14\x00"; // ver needed to extract
|
|
$fr .= "\x00\x00"; // gen purpose bit flag
|
|
$fr .= "\x08\x00"; // compression method
|
|
$fr .= $hexdtime; // last mod time and date
|
|
|
|
// "local file header" segment
|
|
$unc_len = strlen($data);
|
|
$crc = crc32($data);
|
|
$zdata = gzcompress($data);
|
|
$c_len = strlen($zdata);
|
|
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
|
|
$fr .= pack('V', $crc); // crc32
|
|
$fr .= pack('V', $c_len); // compressed filesize
|
|
$fr .= pack('V', $unc_len); // uncompressed filesize
|
|
$fr .= pack('v', strlen($name)); // length of filename
|
|
$fr .= pack('v', 0); // extra field length
|
|
$fr .= $name;
|
|
|
|
// "file data" segment
|
|
$fr .= $zdata;
|
|
|
|
// "data descriptor" segment (optional but necessary if archive is not
|
|
// served as file)
|
|
$fr .= pack('V', $crc); // crc32
|
|
$fr .= pack('V', $c_len); // compressed filesize
|
|
$fr .= pack('V', $unc_len); // uncompressed filesize
|
|
|
|
// add this entry to array
|
|
$this -> datasec[] = $fr;
|
|
$new_offset = strlen(implode('', $this->datasec));
|
|
|
|
// now add to central directory record
|
|
$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
|
|
$cdrec .= pack('v', strlen($name) ); // length of filename
|
|
$cdrec .= pack('v', 0 ); // extra field length
|
|
$cdrec .= pack('v', 0 ); // file comment length
|
|
$cdrec .= pack('v', 0 ); // disk number start
|
|
$cdrec .= pack('v', 0 ); // internal file attributes
|
|
$cdrec .= pack('V', 32 ); // external file attributes - 'archive' bit set
|
|
|
|
$cdrec .= pack('V', $this -> old_offset ); // relative offset of local header
|
|
$this->old_offset = $new_offset;
|
|
|
|
$cdrec .= $name;
|
|
|
|
$this->ctrl_dir[] = $cdrec;
|
|
}
|
|
|
|
private function file() {
|
|
$data = implode('', $this -> datasec);
|
|
$ctrldir = implode('', $this -> ctrl_dir);
|
|
|
|
return
|
|
$data .
|
|
$ctrldir .
|
|
$this -> eof_ctrl_dir .
|
|
pack('v', sizeof($this -> ctrl_dir)) .
|
|
pack('v', sizeof($this -> ctrl_dir)) .
|
|
pack('V', strlen($ctrldir)) .
|
|
pack('V', strlen($data)) .
|
|
"\x00\x00";
|
|
}
|
|
|
|
|
|
//下面是zip解压部分
|
|
protected function ReadFileHeader($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, $data['filename_len']);
|
|
if ($data['extra_len'] != 0) {
|
|
$header['extra'] = fread($zip, $data['extra_len']);
|
|
} else { $header['extra'] = ''; }
|
|
|
|
$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 $header;
|
|
}
|
|
|
|
protected function ReadCentralFileHeaders($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', $binary_data);
|
|
|
|
if ($header['filename_len'] != 0)
|
|
$header['filename'] = fread($zip,$header['filename_len']);
|
|
else $header['filename'] = '';
|
|
|
|
if ($header['extra_len'] != 0)
|
|
$header['extra'] = fread($zip, $header['extra_len']);
|
|
else $header['extra'] = '';
|
|
|
|
if ($header['comment_len'] != 0)
|
|
$header['comment'] = fread($zip, $header['comment_len']);
|
|
else $header['comment'] = '';
|
|
|
|
if ($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 $header;
|
|
}
|
|
|
|
protected function ReadCentralDir($zip,$zip_name){
|
|
$size = filesize($zip_name);
|
|
|
|
if ($size < 277) $maximum_size = $size;
|
|
else $maximum_size=277;
|
|
|
|
@fseek($zip, $size-$maximum_size);
|
|
$pos = ftell($zip); $bytes = 0x00000000;
|
|
|
|
while ($pos < $size){
|
|
$byte = @fread($zip, 1); $bytes=($bytes << 8) | ord($byte);
|
|
if ($bytes == 0x504b0506 or $bytes == 0x2e706870504b0506){ $pos++;break;} $pos++;
|
|
}
|
|
|
|
$fdata=fread($zip,18);
|
|
|
|
$data=@unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',$fdata);
|
|
|
|
if ($data['comment_size'] != 0) $centd['comment'] = fread($zip, $data['comment_size']);
|
|
else $centd['comment'] = ''; $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 $centd;
|
|
}
|
|
|
|
protected function ExtractFile($header,$to,$zip){
|
|
$header = $this->readfileheader($zip);
|
|
|
|
if(substr($to,-1)!="/") $to.="/";
|
|
if($to=='./') $to = '';
|
|
$pth = explode("/",$to.$header['filename']);
|
|
$mydir = '';
|
|
for($i=0;$i<count($pth)-1;$i++){
|
|
if(!$pth[$i]) continue;
|
|
$mydir .= $pth[$i]."/";
|
|
if((!is_dir($mydir) && @mkdir($mydir,0777)) || (($mydir==$to.$header['filename'] || ($mydir==$to && $this->total_folders==0)) && is_dir($mydir)) ){
|
|
@chmod($mydir,0777);
|
|
$this->total_folders ++;
|
|
}
|
|
}
|
|
|
|
if(strrchr($header['filename'],'/')=='/') return;
|
|
|
|
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.$header['filename'].'.gz','rb') or die("Cette archive est compress閑");
|
|
if(!$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');
|
|
|
|
}
|
|
}
|
|
|
|
$this->total_files ++;
|
|
return true;
|
|
}
|
|
|
|
|
|
}
|