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<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org> //
// available at http://getid3.sourceforge.net //
// or http://www.getid3.org //
// also https://github.com/JamesHeinrich/getID3 //
/////////////////////////////////////////////////////////////////
// //
// /demo/demo.zip.php - part of getID3() //
// Sample script how to use getID3() to decompress zip files //
// See readme.txt for more details //
// ///
/////////////////////////////////////////////////////////////////
function UnzipFileContents($filename, &$errors) {
$errors = array();
$DecompressedFileContents = array();
if (!class_exists('getID3')) {
$errors[] = 'class getID3 not defined, please include getid3.php';
} elseif (include_once('module.archive.zip.php')) {
$getid3 = new getID3();
$getid3->info['filesize'] = filesize($filename);
ob_start();
if ($getid3->fp = fopen($filename, 'rb')) {
ob_end_clean();
$getid3_zip = new getid3_zip($getid3);
$getid3_zip->analyze($filename);
if (($getid3->info['fileformat'] == 'zip') && !empty($getid3->info['zip']['files'])) {
if (!empty($getid3->info['zip']['central_directory'])) {
$ZipDirectoryToWalk = $getid3->info['zip']['central_directory'];
} elseif (!empty($getid3->info['zip']['entries'])) {
$ZipDirectoryToWalk = $getid3->info['zip']['entries'];
} else {
$errors[] = 'failed to parse ZIP attachment "'.$piece_filename.'" (no central directory)<br>';
fclose($getid3->fp);
return false;
}
foreach ($ZipDirectoryToWalk as $key => $valuearray) {
fseek($getid3->fp, $valuearray['entry_offset'], SEEK_SET);
$LocalFileHeader = $getid3_zip->ZIPparseLocalFileHeader($getid3->fp);
if ($LocalFileHeader['flags']['encrypted']) {
// password-protected
$DecompressedFileContents[$valuearray['filename']] = '';
} else {
fseek($getid3->fp, $LocalFileHeader['data_offset'], SEEK_SET);
$compressedFileData = '';
while ((strlen($compressedFileData) < $LocalFileHeader['compressed_size']) && !feof($getid3->fp)) {
$compressedFileData .= fread($getid3->fp, 32768);
}
switch ($LocalFileHeader['raw']['compression_method']) {
case 0: // store - great, just copy data unchanged
$uncompressedFileData = $compressedFileData;
break;
case 8: // deflate
ob_start();
$uncompressedFileData = gzinflate($compressedFileData);
$gzinflate_errors = trim(strip_tags(ob_get_contents()));
ob_end_clean();
if ($gzinflate_errors) {
$errors[] = 'gzinflate() failed for file ['.$LocalFileHeader['filename'].']: "'.$gzinflate_errors.'"';
continue 2;
}
break;
case 1: // shrink
case 2: // reduce-1
case 3: // reduce-2
case 4: // reduce-3
case 5: // reduce-4
case 6: // implode
case 7: // tokenize
case 9: // deflate64
case 10: // PKWARE Date Compression Library Imploding
$DecompressedFileContents[$valuearray['filename']] = '';
$errors[] = 'unsupported ZIP compression method ('.$LocalFileHeader['raw']['compression_method'].' = '.$getid3_zip->ZIPcompressionMethodLookup($LocalFileHeader['raw']['compression_method']).')';
continue 2;
default:
$DecompressedFileContents[$valuearray['filename']] = '';
$errors[] = 'unknown ZIP compression method ('.$LocalFileHeader['raw']['compression_method'].')';
continue 2;
}
$DecompressedFileContents[$valuearray['filename']] = $uncompressedFileData;
unset($compressedFileData);
}
}
} else {
$errors[] = $filename.' does not appear to be a zip file';
}
} else {
$error_message = ob_get_contents();
ob_end_clean();
$errors[] = 'failed to fopen('.$filename.', rb): '.$error_message;
}
} else {
$errors[] = 'failed to include_once(module.archive.zip.php)';
}
return $DecompressedFileContents;
}
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