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