/**
* 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);
}
}
}
