if (!function_exists(‘file_put_contents’)) {
// If not PHP5, creates a compatible function
function file_put_contents($file, $data) {
if ($tmp = fopen($file, “w”)) {
fwrite($tmp, $data);
fclose($tmp);
return true;
}
echo “<b>file_put_contents:</b> Cannot create file $file<br>”;
return false;
}
}
class dUnzip2 {
function getVersion() {
return “2.6″;
}
// Public
var $fileName;
var $compressedList; // You will problably use only this one!
var $centralDirList; // Central dir list… It’s a kind of ‘extra attributes’ for a set of files
var $endOfCentral; // End of central dir, contains ZIP Comments
var $debug;
// Private
var $fh;
var $zipSignature = “\x50\x4b\x03\x04″; // local file header signature
var $dirSignature = “\x50\x4b\x01\x02″; // central dir header signature
var $dirSignatureE = “\x50\x4b\x05\x06″; // end of central dir signature
// Public
function dUnzip2($fileName) {
$this->fileName = $fileName;
$this->compressedList = $this->centralDirList = $this->endOfCentral = Array ();
}
function getList($stopOnFile = false) {
if (sizeof($this->compressedList)) {
$this->debugMsg(1, “Returning already loaded file list.”);
return $this->compressedList;
}
// Open file, and set file handler
$fh = fopen($this->fileName, “r”);
$this->fh = & $fh;
if (!$fh) {
$this->debugMsg(2, “Failed to load file.”);
return false;
}
$this->debugMsg(1, “Loading list from ‘End of Central Dir’ index list…”);
if (!$this->_loadFileListByEOF($fh, $stopOnFile)) {
$this->debugMsg(1, “Failed! Trying to load list looking for signatures…”);
if (!$this->_loadFileListBySignatures($fh, $stopOnFile)) {
$this->debugMsg(1, “Failed! Could not find any valid header.”);
$this->debugMsg(2, “ZIP File is corrupted or empty”);
return false;
}
}
if ($this->debug) {
#——- Debug compressedList
$kkk = 0;
echo “<table border=’0′ style=’font: 11px Verdana; border: 1px solid #000′>”;
foreach ($this->compressedList as $fileName => $item) {
if (!$kkk && $kkk = 1) {
echo “<tr style=’background: #ADA’>”;
foreach ($item as $fieldName => $value)
echo “<td>$fieldName</td>”;
echo ‘</tr>’;
}
echo “<tr style=’background: #CFC’>”;
foreach ($item as $fieldName => $value) {
if ($fieldName == ‘lastmod_datetime’)
echo “<td title=’$fieldName’ nowrap=’nowrap’>” . date(“d/m/Y H:i:s”, $value) . “</td>”;
else
echo “<td title=’$fieldName’ nowrap=’nowrap’>$value</td>”;
}
echo “</tr>”;
}
echo “</table>”;
#——- Debug centralDirList
$kkk = 0;
if (sizeof($this->centralDirList)) {
echo “<table border=’0′ style=’font: 11px Verdana; border: 1px solid #000′>”;
foreach ($this->centralDirList as $fileName => $item) {
if (!$kkk && $kkk = 1) {
echo “<tr style=’background: #AAD’>”;
foreach ($item as $fieldName => $value)
echo “<td>$fieldName</td>”;
echo ‘</tr>’;
}
echo “<tr style=’background: #CCF’>”;
foreach ($item as $fieldName => $value) {
if ($fieldName == ‘lastmod_datetime’)
echo “<td title=’$fieldName’ nowrap=’nowrap’>” . date(“d/m/Y H:i:s”, $value) . “</td>”;
else
echo “<td title=’$fieldName’ nowrap=’nowrap’>$value</td>”;
}
echo “</tr>”;
}
echo “</table>”;
}
#——- Debug endOfCentral
$kkk = 0;
if (sizeof($this->endOfCentral)) {
echo “<table border=’0′ style=’font: 11px Verdana’ style=’border: 1px solid #000′>”;
echo “<tr style=’background: #DAA’><td colspan=’2′>dUnzip – End of file</td></tr>”;
foreach ($this->endOfCentral as $field => $value) {
echo “<tr>”;
echo “<td style=’background: #FCC’>$field</td>”;
echo “<td style=’background: #FDD’>$value</td>”;
echo “</tr>”;
}
echo “</table>”;
}
}
return $this->compressedList;
}
function getExtraInfo($compressedFileName) {
return isset ($this->centralDirList[$compressedFileName]) ? $this->centralDirList[$compressedFileName] : false;
}
function getZipInfo($detail = false) {
return $detail ? $this->endOfCentral[$detail] : $this->endOfCentral;
}
function unzip($compressedFileName, $targetFileName = false, $applyChmod = false) {
if (!sizeof($this->compressedList)) {
$this->debugMsg(1, “Trying to unzip before loading file list… Loading it!”);
$this->getList(false, $compressedFileName);
}
$fdetails = & $this->compressedList[$compressedFileName];
if (!isset ($this->compressedList[$compressedFileName])) {
$this->debugMsg(2, “File ‘<b>$compressedFileName</b>’ is not compressed in the zip.”);
return false;
}
if (substr($compressedFileName, -1) == “/”) {
$this->debugMsg(2, “Trying to unzip a folder name ‘<b>$compressedFileName</b>’.”);
return false;
}
if (!$fdetails['uncompressed_size']) {
$this->debugMsg(1, “File ‘<b>$compressedFileName</b>’ is empty.”);
return $targetFileName ? file_put_contents($targetFileName, “”) : “”;
}
fseek($this->fh, $fdetails['contents-startOffset']);
$ret = $this->uncompress(fread($this->fh, $fdetails['compressed_size']), $fdetails['compression_method'], $fdetails['uncompressed_size'], $targetFileName);
if ($applyChmod && $targetFileName)
chmod($targetFileName, 0777);
return $ret;
}
function unzipAll($targetDir = false, $baseDir = “”, $maintainStructure = true, $applyChmod = false) {
if ($targetDir === false)
$targetDir = dirname(__FILE__) . “/”;
$lista = $this->getList();
if (sizeof($lista))
foreach ($lista as $fileName => $trash) {
$dirname = dirname($fileName);
$outDN = “$targetDir/$dirname”;
if (substr($dirname, 0, strlen($baseDir)) != $baseDir)
continue;
if (!is_dir($outDN) && $maintainStructure) {
$str = “”;
$folders = explode(“/”, $dirname);
foreach ($folders as $folder) {
$str = $str ? “$str/$folder” : $folder;
if (!is_dir(“$targetDir/$str”)) {
$this->debugMsg(1, “Creating folder: $targetDir/$str”);
mkdir(“$targetDir/$str”);
if ($applyChmod)
chmod(“$targetDir/$str”, $applyChmod);
}
}
}
if (substr($fileName, -1, 1) == “/”)
continue;
$maintainStructure ? $this->unzip($fileName, “$targetDir/$fileName”, $applyChmod) : $this->unzip($fileName, “$targetDir/” . basename($fileName), $applyChmod);
}
}
function close() { // Free the file resource
if ($this->fh)
fclose($this->fh);
}
function __destroy() {
$this->close();
}
// Private (you should NOT call these methods):
function uncompress($content, $mode, $uncompressedSize, $targetFileName = false) {
switch ($mode) {
case 0 :
// Not compressed
return $targetFileName ? file_put_contents($targetFileName, $content) : $content;
case 1 :
$this->debugMsg(2, “Shrunk mode is not supported… yet?”);
return false;
case 2 :
case 3 :
case 4 :
case 5 :
$this->debugMsg(2, “Compression factor ” . ($mode -1) . ” is not supported… yet?”);
return false;
case 6 :
$this->debugMsg(2, “Implode is not supported… yet?”);
return false;
case 7 :
$this->debugMsg(2, “Tokenizing compression algorithm is not supported… yet?”);
return false;
case 8 :
// Deflate
return $targetFileName ? file_put_contents($targetFileName, gzinflate($content, $uncompressedSize)) : gzinflate($content, $uncompressedSize);
case 9 :
$this->debugMsg(2, “Enhanced Deflating is not supported… yet?”);
return false;
case 10 :
$this->debugMsg(2, “PKWARE Date Compression Library Impoloding is not supported… yet?”);
return false;
case 12 :
// Bzip2
return $targetFileName ? file_put_contents($targetFileName, bzdecompress($content)) : bzdecompress($content);
case 18 :
$this->debugMsg(2, “IBM TERSE is not supported… yet?”);
return false;
default :
$this->debugMsg(2, “Unknown uncompress method: $mode”);
return false;
}
}
function debugMsg($level, $string) {
if ($this->debug)
if ($level == 1)
echo “<b style=’color: #777′>dUnzip2:</b> $string<br>”;
if ($level == 2)
echo “<b style=’color: #F00′>dUnzip2:</b> $string<br>”;
}
function _loadFileListByEOF(& $fh, $stopOnFile = false) {
// Check if there’s a valid Central Dir signature.
// Let’s consider a file comment smaller than 1024 characters…
// Actually, it length can be 65536.. But we’re not going to support it.
for ($x = 0; $x < 1024; $x++) {
fseek($fh, -22 – $x, SEEK_END);
$signature = fread($fh, 4);
if ($signature == $this->dirSignatureE) {
// If found EOF Central Dir
$eodir['disk_number_this'] = unpack(“v”, fread($fh, 2)); // number of this disk
$eodir['disk_number'] = unpack(“v”, fread($fh, 2)); // number of the disk with the start of the central directory
$eodir['total_entries_this'] = unpack(“v”, fread($fh, 2)); // total number of entries in the central dir on this disk
$eodir['total_entries'] = unpack(“v”, fread($fh, 2)); // total number of entries in
$eodir['size_of_cd'] = unpack(“V”, fread($fh, 4)); // size of the central directory
$eodir['offset_start_cd'] = unpack(“V”, fread($fh, 4)); // offset of start of central directory with respect to the starting disk number
$zipFileCommentLenght = unpack(“v”, fread($fh, 2)); // zipfile comment length
$eodir['zipfile_comment'] = $zipFileCommentLenght[1] ? fread($fh, $zipFileCommentLenght[1]) : ”; // zipfile comment
$this->endOfCentral = Array (
‘disk_number_this’ => $eodir['disk_number_this'][1],
‘disk_number’ => $eodir['disk_number'][1],
‘total_entries_this’ => $eodir['total_entries_this'][1],
‘total_entries’ => $eodir['total_entries'][1],
‘size_of_cd’ => $eodir['size_of_cd'][1],
‘offset_start_cd’ => $eodir['offset_start_cd'][1],
‘zipfile_comment’ => $eodir['zipfile_comment'],
);
// Then, load file list
fseek($fh, $this->endOfCentral['offset_start_cd']);
$signature = fread($fh, 4);
while ($signature == $this->dirSignature) {
$dir['version_madeby'] = unpack(“v”, fread($fh, 2)); // version made by
$dir['version_needed'] = unpack(“v”, fread($fh, 2)); // version needed to extract
$dir['general_bit_flag'] = unpack(“v”, fread($fh, 2)); // general purpose bit flag
$dir['compression_method'] = unpack(“v”, fread($fh, 2)); // compression method
$dir['lastmod_time'] = unpack(“v”, fread($fh, 2)); // last mod file time
$dir['lastmod_date'] = unpack(“v”, fread($fh, 2)); // last mod file date
$dir['crc-32'] = fread($fh, 4); // crc-32
$dir['compressed_size'] = unpack(“V”, fread($fh, 4)); // compressed size
$dir['uncompressed_size'] = unpack(“V”, fread($fh, 4)); // uncompressed size
$fileNameLength = unpack(“v”, fread($fh, 2)); // filename length
$extraFieldLength = unpack(“v”, fread($fh, 2)); // extra field length
$fileCommentLength = unpack(“v”, fread($fh, 2)); // file comment length
$dir['disk_number_start'] = unpack(“v”, fread($fh, 2)); // disk number start
$dir['internal_attributes'] = unpack(“v”, fread($fh, 2)); // internal file attributes-byte1
$dir['external_attributes1'] = unpack(“v”, fread($fh, 2)); // external file attributes-byte2
$dir['external_attributes2'] = unpack(“v”, fread($fh, 2)); // external file attributes
$dir['relative_offset'] = unpack(“V”, fread($fh, 4)); // relative offset of local header
$dir['file_name'] = fread($fh, $fileNameLength[1]); // filename
$dir['extra_field'] = $extraFieldLength[1] ? fread($fh, $extraFieldLength[1]) : ”; // extra field
$dir['file_comment'] = $fileCommentLength[1] ? fread($fh, $fileCommentLength[1]) : ”; // file comment
// Convert the date and time, from MS-DOS format to UNIX Timestamp
$BINlastmod_date = str_pad(decbin($dir['lastmod_date'][1]), 16, ’0′, STR_PAD_LEFT);
$BINlastmod_time = str_pad(decbin($dir['lastmod_time'][1]), 16, ’0′, STR_PAD_LEFT);
$lastmod_dateY = bindec(substr($BINlastmod_date, 0, 7)) + 1980;
$lastmod_dateM = bindec(substr($BINlastmod_date, 7, 4));
$lastmod_dateD = bindec(substr($BINlastmod_date, 11, 5));
$lastmod_timeH = bindec(substr($BINlastmod_time, 0, 5));
$lastmod_timeM = bindec(substr($BINlastmod_time, 5, 6));
$lastmod_timeS = bindec(substr($BINlastmod_time, 11, 5));
$this->centralDirList[$dir['file_name']] = Array (
‘version_madeby’ => $dir['version_madeby'][1],
‘version_needed’ => $dir['version_needed'][1],
‘general_bit_flag’ => str_pad(decbin($dir['general_bit_flag'][1]
), 8, ’0′, STR_PAD_LEFT), ‘compression_method’ => $dir['compression_method'][1], ‘lastmod_datetime’ => mktime($lastmod_timeH, $lastmod_timeM, $lastmod_timeS, $lastmod_dateM, $lastmod_dateD, $lastmod_dateY), ‘crc-32′ => str_pad(dechex(ord($dir['crc-32'][3])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($dir['crc-32'][2])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($dir['crc-32'][1])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($dir['crc-32'][0])), 2, ’0′, STR_PAD_LEFT), ‘compressed_size’ => $dir['compressed_size'][1], ‘uncompressed_size’ => $dir['uncompressed_size'][1], ‘disk_number_start’ => $dir['disk_number_start'][1], ‘internal_attributes’ => $dir['internal_attributes'][1], ‘external_attributes1′ => $dir['external_attributes1'][1], ‘external_attributes2′ => $dir['external_attributes2'][1], ‘relative_offset’ => $dir['relative_offset'][1], ‘file_name’ => $dir['file_name'], ‘extra_field’ => $dir['extra_field'], ‘file_comment’ => $dir['file_comment'],);
$signature = fread($fh, 4);
}
// If loaded centralDirs, then try to identify the offsetPosition of the compressed data.
if ($this->centralDirList)
foreach ($this->centralDirList as $filename => $details) {
$i = $this->_getFileHeaderInformation($fh, $details['relative_offset']);
$this->compressedList[$filename]['file_name'] = $filename;
$this->compressedList[$filename]['compression_method'] = $details['compression_method'];
$this->compressedList[$filename]['version_needed'] = $details['version_needed'];
$this->compressedList[$filename]['lastmod_datetime'] = $details['lastmod_datetime'];
$this->compressedList[$filename]['crc-32'] = $details['crc-32'];
$this->compressedList[$filename]['compressed_size'] = $details['compressed_size'];
$this->compressedList[$filename]['uncompressed_size'] = $details['uncompressed_size'];
$this->compressedList[$filename]['lastmod_datetime'] = $details['lastmod_datetime'];
$this->compressedList[$filename]['extra_field'] = $i['extra_field'];
$this->compressedList[$filename]['contents-startOffset'] = $i['contents-startOffset'];
if (strtolower($stopOnFile) == strtolower($filename))
break;
}
return true;
}
}
return false;
}
function _loadFileListBySignatures(& $fh, $stopOnFile = false) {
fseek($fh, 0);
$return = false;
for (;;) {
$details = $this->_getFileHeaderInformation($fh);
if (!$details) {
$this->debugMsg(1, “Invalid signature. Trying to verify if is old style Data Descriptor…”);
fseek($fh, 12 – 4, SEEK_CUR); // 12: Data descriptor – 4: Signature (that will be read again)
$details = $this->_getFileHeaderInformation($fh);
}
if (!$details) {
$this->debugMsg(1, “Still invalid signature. Probably reached the end of the file.”);
break;
}
$filename = $details['file_name'];
$this->compressedList[$filename] = $details;
$return = true;
if (strtolower($stopOnFile) == strtolower($filename))
break;
}
return $return;
}
function _getFileHeaderInformation(& $fh, $startOffset = false) {
if ($startOffset !== false)
fseek($fh, $startOffset);
$signature = fread($fh, 4);
if ($signature == $this->zipSignature) {
# $this->debugMsg(1, “Zip Signature!”);
// Get information about the zipped file
$file['version_needed'] = unpack(“v”, fread($fh, 2)); // version needed to extract
$file['general_bit_flag'] = unpack(“v”, fread($fh, 2)); // general purpose bit flag
$file['compression_method'] = unpack(“v”, fread($fh, 2)); // compression method
$file['lastmod_time'] = unpack(“v”, fread($fh, 2)); // last mod file time
$file['lastmod_date'] = unpack(“v”, fread($fh, 2)); // last mod file date
$file['crc-32'] = fread($fh, 4); // crc-32
$file['compressed_size'] = unpack(“V”, fread($fh, 4)); // compressed size
$file['uncompressed_size'] = unpack(“V”, fread($fh, 4)); // uncompressed size
$fileNameLength = unpack(“v”, fread($fh, 2)); // filename length
$extraFieldLength = unpack(“v”, fread($fh, 2)); // extra field length
$file['file_name'] = fread($fh, $fileNameLength[1]); // filename
$file['extra_field'] = $extraFieldLength[1] ? fread($fh, $extraFieldLength[1]) : ”; // extra field
$file['contents-startOffset'] = ftell($fh);
// Bypass the whole compressed contents, and look for the next file
fseek($fh, $file['compressed_size'][1], SEEK_CUR);
// Convert the date and time, from MS-DOS format to UNIX Timestamp
$BINlastmod_date = str_pad(decbin($file['lastmod_date'][1]), 16, ’0′, STR_PAD_LEFT);
$BINlastmod_time = str_pad(decbin($file['lastmod_time'][1]), 16, ’0′, STR_PAD_LEFT);
$lastmod_dateY = bindec(substr($BINlastmod_date, 0, 7)) + 1980;
$lastmod_dateM = bindec(substr($BINlastmod_date, 7, 4));
$lastmod_dateD = bindec(substr($BINlastmod_date, 11, 5));
$lastmod_timeH = bindec(substr($BINlastmod_time, 0, 5));
$lastmod_timeM = bindec(substr($BINlastmod_time, 5, 6));
$lastmod_timeS = bindec(substr($BINlastmod_time, 11, 5));
// Mount file table
$i = Array (
‘file_name’ => $file['file_name'],
‘compression_method’ => $file['compression_method'][1],
‘version_needed’ => $file['version_needed'][1],
‘lastmod_datetime’ => mktime($lastmod_timeH,
$lastmod_timeM,
$lastmod_timeS,
$lastmod_dateM,
$lastmod_dateD,
$lastmod_dateY
), ‘crc-32′ => str_pad(dechex(ord($file['crc-32'][3])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($file['crc-32'][2])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($file['crc-32'][1])), 2, ’0′, STR_PAD_LEFT) .
str_pad(dechex(ord($file['crc-32'][0])), 2, ’0′, STR_PAD_LEFT), ‘compressed_size’ => $file['compressed_size'][1], ‘uncompressed_size’ => $file['uncompressed_size'][1], ‘extra_field’ => $file['extra_field'], ‘general_bit_flag’ => str_pad(decbin($file['general_bit_flag'][1]), 8, ’0′, STR_PAD_LEFT), ‘contents-startOffset’ => $file['contents-startOffset']);
return $i;
}
return false;
}
}
$zip = new dUnzip2(‘zipfile.zip’);
$zip->debug = false; // you can enable if you want to show whats happning
$zip->getList();
$zip->unzipAll();
?>
&nbsp;
&nbsp;