Lock file before download

This will throw a LockedException if a concurrent request is currently
touching that file.
This commit is contained in:
Vincent Petry 2015-06-17 17:40:46 +02:00
parent a89bb1d383
commit a9bca9e3aa
1 changed files with 13 additions and 2 deletions

View File

@ -43,6 +43,8 @@
// TODO: get rid of this using proper composer packages
require_once 'mcnetic/phpzipstreamer/ZipStreamer.php';
use OCP\Lock\ILockingProvider;
/**
* Class for file server access
*
@ -82,6 +84,7 @@ class OC_Files {
* @param boolean $only_header ; boolean to only send header of the request
*/
public static function get($dir, $files, $only_header = false) {
$view = \OC\Files\Filesystem::getView();
$xsendfile = false;
if (isset($_SERVER['MOD_X_SENDFILE_ENABLED']) ||
isset($_SERVER['MOD_X_SENDFILE2_ENABLED']) ||
@ -131,7 +134,9 @@ class OC_Files {
OC_Util::obEnd();
try {
if ($get_type === self::FILE) {
$view->lockFile($filename, ILockingProvider::LOCK_SHARED);
}
if ($zip or \OC\Files\Filesystem::isReadable($filename)) {
self::sendHeaders($filename, $name, $zip);
} elseif (!\OC\Files\Filesystem::file_exists($filename)) {
@ -168,7 +173,6 @@ class OC_Files {
set_time_limit($executionTime);
} else {
if ($xsendfile) {
$view = \OC\Files\Filesystem::getView();
/** @var $storage \OC\Files\Storage\Storage */
list($storage) = $view->resolvePath($filename);
if ($storage->isLocal()) {
@ -180,6 +184,13 @@ class OC_Files {
\OC\Files\Filesystem::readfile($filename);
}
}
if ($get_type === self::FILE) {
$view->unlockFile($filename, ILockingProvider::LOCK_SHARED);
}
} catch (\OCP\Lock\LockedException $ex) {
$l = \OC::$server->getL10N('core');
$hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';
\OC_Template::printErrorPage($l->t('File is currently busy, please try again later'), $hint);
} catch (\Exception $ex) {
$l = \OC::$server->getL10N('core');
$hint = method_exists($ex, 'getHint') ? $ex->getHint() : '';