/**
* store a new version of a file.
*/
public function store($filename)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
list($uid, $filename) = self::getUidAndFilename($filename);
$files_view = new \OC_FilesystemView('/' . $uid . '/files');
$users_view = new \OC_FilesystemView('/' . $uid);
//check if source file already exist as version to avoid recursions.
// todo does this check work?
if ($users_view->file_exists($filename)) {
return false;
}
// check if filename is a directory
if ($files_view->is_dir($filename)) {
return false;
}
// check filetype blacklist
$blacklist = explode(' ', \OCP\Config::getSystemValue('files_versionsblacklist', Storage::DEFAULTBLACKLIST));
foreach ($blacklist as $bl) {
$parts = explode('.', $filename);
$ext = end($parts);
if (strtolower($ext) == $bl) {
return false;
}
}
// we should have a source file to work with
if (!$files_view->file_exists($filename)) {
return false;
}
// check filesize
if ($files_view->filesize($filename) > \OCP\Config::getSystemValue('files_versionsmaxfilesize', Storage::DEFAULTMAXFILESIZE)) {
return false;
}
// check mininterval if the file is being modified by the owner (all shared files should be versioned despite mininterval)
if ($uid == \OCP\User::getUser()) {
$versions_fileview = new \OC_FilesystemView('/' . $uid . '/files_versions');
$versionsName = \OCP\Config::getSystemValue('datadirectory') . $versions_fileview->getAbsolutePath($filename);
$versionsFolderName = \OCP\Config::getSystemValue('datadirectory') . $versions_fileview->getAbsolutePath('');
$matches = glob($versionsName . '.v*');
sort($matches);
$parts = explode('.v', end($matches));
if (end($parts) + Storage::DEFAULTMININTERVAL > time()) {
return false;
}
}
// create all parent folders
$info = pathinfo($filename);
if (!file_exists($versionsFolderName . '/' . $info['dirname'])) {
mkdir($versionsFolderName . '/' . $info['dirname'], 0750, true);
}
// store a new version of a file
$users_view->copy('files' . $filename, 'files_versions' . $filename . '.v' . time());
// expire old revisions if necessary
Storage::expire($filename);
}
}
/**
* rollback to an old version of a file.
*/
public static function rollback($file, $revision)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
list($uid, $filename) = self::getUidAndFilename($file);
$users_view = new \OC\Files\View('/' . $uid);
$files_view = new \OC\Files\View('/' . \OCP\User::getUser() . '/files');
$versionCreated = false;
//first create a new version
$version = 'files_versions' . $filename . '.v' . $users_view->filemtime('files' . $filename);
if (!$users_view->file_exists($version)) {
// disable proxy to prevent multiple fopen calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$users_view->copy('files' . $filename, 'files_versions' . $filename . '.v' . $users_view->filemtime('files' . $filename));
// reset proxy state
\OC_FileProxy::$enabled = $proxyStatus;
$versionCreated = true;
}
// rollback
if (@$users_view->rename('files_versions' . $filename . '.v' . $revision, 'files' . $filename)) {
$files_view->touch($file, $revision);
Storage::expire($file);
return true;
} else {
if ($versionCreated) {
$users_view->unlink($version);
}
}
}
return false;
}
/**
* store a new version of a file.
*/
public static function store($filename)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
if (\OCP\App::isEnabled('files_sharing') && ($source = \OC_Share::getSource('/' . \OCP\User::getUser() . '/files' . $filename))) {
$pos = strpos($source, '/files', 1);
$uid = substr($source, 1, $pos - 1);
$filename = substr($source, $pos + 6);
} else {
$uid = \OCP\User::getUser();
}
$versionsfoldername = \OCP\Config::getSystemValue('datadirectory') . '/' . $uid . '/' . \OCP\Config::getSystemValue('files_versionsfolder', Storage::DEFAULTFOLDER);
$filesfoldername = \OCP\Config::getSystemValue('datadirectory') . '/' . $uid . '/files';
Storage::init();
// check if filename is a directory
if (is_dir($filesfoldername . '/' . $filename)) {
return false;
}
// check filetype blacklist
$blacklist = explode(' ', \OCP\Config::getSystemValue('files_versionsblacklist', Storage::DEFAULTBLACKLIST));
foreach ($blacklist as $bl) {
$parts = explode('.', $filename);
$ext = end($parts);
if (strtolower($ext) == $bl) {
return false;
}
}
// check filesize
if (filesize($filesfoldername . '/' . $filename) > \OCP\Config::getSystemValue('files_versionsmaxfilesize', Storage::DEFAULTMAXFILESIZE)) {
return false;
}
// check mininterval if the file is being modified by the owner (all shared files should be versioned despite mininterval)
if ($uid == \OCP\User::getUser()) {
$matches = glob($versionsfoldername . '/' . $filename . '.v*');
sort($matches);
$parts = explode('.v', end($matches));
if (end($parts) + Storage::DEFAULTMININTERVAL > time()) {
return false;
}
}
// create all parent folders
$info = pathinfo($filename);
@mkdir($versionsfoldername . '/' . $info['dirname'], 0700, true);
// store a new version of a file
copy($filesfoldername . '/' . $filename, $versionsfoldername . '/' . $filename . '.v' . time());
// expire old revisions
Storage::expire($filename);
}
}
