/** * return the content of a file or return a zip file containing multiple files * * @param string $dir * @param string $file ; separated list of files to download * @param boolean $only_header ; boolean to only send header of the request */ public static function get($dir, $files, $only_header = false) { $xsendfile = false; if (isset($_SERVER['MOD_X_SENDFILE_ENABLED']) || isset($_SERVER['MOD_X_SENDFILE2_ENABLED']) || isset($_SERVER['MOD_X_ACCEL_REDIRECT_ENABLED'])) { $xsendfile = true; } if (is_array($files) && count($files) == 1) { $files = $files[0]; } if (is_array($files)) { self::validateZipDownload($dir, $files); $executionTime = intval(ini_get('max_execution_time')); set_time_limit(0); $zip = new ZipArchive(); $filename = OC_Helper::tmpFile('.zip'); if ($zip->open($filename, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE) !== true) { $l = OC_L10N::get('lib'); throw new Exception($l->t('cannot open "%s"', array($filename))); } foreach ($files as $file) { $file = $dir . '/' . $file; if (\OC\Files\Filesystem::is_file($file)) { $tmpFile = \OC\Files\Filesystem::toTmpFile($file); self::$tmpFiles[] = $tmpFile; $zip->addFile($tmpFile, basename($file)); } elseif (\OC\Files\Filesystem::is_dir($file)) { self::zipAddDir($file, $zip); } } $zip->close(); if ($xsendfile) { $filename = OC_Helper::moveToNoClean($filename); } $basename = basename($dir); if ($basename) { $name = $basename . '.zip'; } else { $name = 'download.zip'; } set_time_limit($executionTime); } elseif (\OC\Files\Filesystem::is_dir($dir . '/' . $files)) { self::validateZipDownload($dir, $files); $executionTime = intval(ini_get('max_execution_time')); set_time_limit(0); $zip = new ZipArchive(); $filename = OC_Helper::tmpFile('.zip'); if ($zip->open($filename, ZIPARCHIVE::CREATE | ZIPARCHIVE::OVERWRITE) !== true) { $l = OC_L10N::get('lib'); throw new Exception($l->t('cannot open "%s"', array($filename))); } $file = $dir . '/' . $files; self::zipAddDir($file, $zip); $zip->close(); if ($xsendfile) { $filename = OC_Helper::moveToNoClean($filename); } $name = $files . '.zip'; set_time_limit($executionTime); } else { $zip = false; $filename = $dir . '/' . $files; $name = $files; if ($xsendfile && OC_App::isEnabled('files_encryption')) { $xsendfile = false; } } OC_Util::obEnd(); if ($zip or \OC\Files\Filesystem::isReadable($filename)) { OC_Response::setContentDispositionHeader($name, 'attachment'); header('Content-Transfer-Encoding: binary'); OC_Response::disableCaching(); if ($zip) { ini_set('zlib.output_compression', 'off'); header('Content-Type: application/zip'); header('Content-Length: ' . filesize($filename)); self::addSendfileHeader($filename); } else { $filesize = \OC\Files\Filesystem::filesize($filename); header('Content-Type: ' . \OC\Files\Filesystem::getMimeType($filename)); if ($filesize > -1) { header("Content-Length: " . $filesize); } if ($xsendfile) { list($storage) = \OC\Files\Filesystem::resolvePath(\OC\Files\Filesystem::getView()->getAbsolutePath($filename)); /** * @var \OC\Files\Storage\Storage $storage */ if ($storage->instanceOfStorage('\\OC\\Files\\Storage\\Local')) { self::addSendfileHeader(\OC\Files\Filesystem::getLocalFile($filename)); } } } } elseif ($zip or !\OC\Files\Filesystem::file_exists($filename)) { header("HTTP/1.0 404 Not Found"); $tmpl = new OC_Template('', '404', 'guest'); $tmpl->assign('file', $name); $tmpl->printPage(); } else { header("HTTP/1.0 403 Forbidden"); die('403 Forbidden'); } if ($only_header) { return; } if ($zip) { $handle = fopen($filename, 'r'); if ($handle) { $chunkSize = 8 * 1024; // 1 MB chunks while (!feof($handle)) { echo fread($handle, $chunkSize); flush(); } } if (!$xsendfile) { unlink($filename); } } else { \OC\Files\Filesystem::readfile($filename); } foreach (self::$tmpFiles as $tmpFile) { if (file_exists($tmpFile) and is_file($tmpFile)) { unlink($tmpFile); } } }