/**
* after a file is renamed/copied, rename/copy its keyfile and share-keys also fix the file size and fix also the sharing
*
* @param array $params array with oldpath and newpath
*/
public static function postRenameOrCopy($params)
{
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$view = new \OC_FilesystemView('/');
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
if (isset(self::$renamedFiles[$params['oldpath']]['uid']) && isset(self::$renamedFiles[$params['oldpath']]['path'])) {
$ownerOld = self::$renamedFiles[$params['oldpath']]['uid'];
$pathOld = self::$renamedFiles[$params['oldpath']]['path'];
$type = self::$renamedFiles[$params['oldpath']]['type'];
$operation = self::$renamedFiles[$params['oldpath']]['operation'];
unset(self::$renamedFiles[$params['oldpath']]);
} else {
\OCP\Util::writeLog('Encryption library', "can't get path and owner from the file before it was renamed", \OCP\Util::DEBUG);
\OC_FileProxy::$enabled = $proxyStatus;
return false;
}
list($ownerNew, $pathNew) = $util->getUidAndFilename($params['newpath']);
// Format paths to be relative to user files dir
if ($util->isSystemWideMountPoint($pathOld)) {
$oldKeyfilePath = 'files_encryption/keyfiles/' . $pathOld;
$oldShareKeyPath = 'files_encryption/share-keys/' . $pathOld;
} else {
$oldKeyfilePath = $ownerOld . '/' . 'files_encryption/keyfiles/' . $pathOld;
$oldShareKeyPath = $ownerOld . '/' . 'files_encryption/share-keys/' . $pathOld;
}
if ($util->isSystemWideMountPoint($pathNew)) {
$newKeyfilePath = 'files_encryption/keyfiles/' . $pathNew;
$newShareKeyPath = 'files_encryption/share-keys/' . $pathNew;
} else {
$newKeyfilePath = $ownerNew . '/files_encryption/keyfiles/' . $pathNew;
$newShareKeyPath = $ownerNew . '/files_encryption/share-keys/' . $pathNew;
}
// add key ext if this is not an folder
if ($type === 'file') {
$oldKeyfilePath .= '.key';
$newKeyfilePath .= '.key';
// create destination folder if not exists
$localKeyPath = $view->getLocalFile($oldShareKeyPath);
$newLocalKeyPath = \OC\Files\Filesystem::normalizePath(str_replace($pathOld, $pathNew, $localKeyPath));
if (!file_exists(dirname($newLocalKeyPath))) {
mkdir(dirname($newLocalKeyPath), 0750, true);
}
// handle share-keys
$matches = Helper::findShareKeys($pathOld, $oldShareKeyPath, $view);
if (count($matches) === 0) {
\OC_Log::write('Encryption library', 'No share keys found for "' . $pathOld . '"', \OC_Log::WARN);
}
foreach ($matches as $src) {
$dst = \OC\Files\Filesystem::normalizePath(str_replace($pathOld, $pathNew, $src));
$view->{$operation}($src, $dst);
}
} else {
// handle share-keys folders
// create destination folder if not exists
if (!$view->file_exists(dirname($newShareKeyPath))) {
mkdir($view->getLocalFile($newShareKeyPath), 0750, true);
}
$view->{$operation}($oldShareKeyPath, $newShareKeyPath);
}
// Rename keyfile so it isn't orphaned
if ($view->file_exists($oldKeyfilePath)) {
// create destination folder if not exists
if (!$view->file_exists(dirname($newKeyfilePath))) {
mkdir(dirname($view->getLocalFile($newKeyfilePath)), 0750, true);
}
$view->{$operation}($oldKeyfilePath, $newKeyfilePath);
}
// build the path to the file
$newPath = '/' . $ownerNew . '/files' . $pathNew;
// update sharing-keys
self::updateKeyfiles($params['newpath'], $type);
\OC_FileProxy::$enabled = $proxyStatus;
}
/**
* @brief get a list of all available versions of a file in descending chronological order
* @param $filename file to find versions of, relative to the user files dir
* @param $count number of versions to return
* @returns array
*/
public static function getVersions($filename, $count = 0)
{
if (\OCP\Config::getSystemValue('files_versions', Storage::DEFAULTENABLED) == 'true') {
list($uid, $filename) = self::getUidAndFilename($filename);
$versions_fileview = new \OC_FilesystemView('/' . $uid . '/files_versions');
$versionsName = \OCP\Config::getSystemValue('datadirectory') . $versions_fileview->getAbsolutePath($filename);
$versions = array();
// fetch for old versions
$matches = glob($versionsName . '.v*');
sort($matches);
$i = 0;
$files_view = new \OC_FilesystemView('/' . \OCP\User::getUser() . '/files');
$local_file = $files_view->getLocalFile($filename);
foreach ($matches as $ma) {
$i++;
$versions[$i]['cur'] = 0;
$parts = explode('.v', $ma);
$versions[$i]['version'] = end($parts);
\md5_file($ma) == \md5_file($local_file) ? $versions[$i]['fileMatch'] = 1 : ($versions[$i]['fileMatch'] = 0);
}
$versions = array_reverse($versions);
foreach ($versions as $key => $value) {
// flag the first matched file in array (which will have latest modification date) as current version
if ($value['fileMatch']) {
$value['cur'] = 1;
break;
}
}
$versions = array_reverse($versions);
// only show the newest commits
if ($count != 0 and count($versions) > $count) {
$versions = array_slice($versions, count($versions) - $count);
}
return $versions;
} else {
// if versioning isn't enabled then return an empty array
return array();
}
}
/**
* @brief after a file is renamed, rename its keyfile and share-keys also fix the file size and fix also the sharing
* @param array with oldpath and newpath
*
* This function is connected to the rename signal of OC_Filesystem and adjust the name and location
* of the stored versions along the actual file
*/
public static function postRename($params)
{
if (\OCP\App::isEnabled('files_encryption') === false) {
return true;
}
// Disable encryption proxy to prevent recursive calls
$proxyStatus = \OC_FileProxy::$enabled;
\OC_FileProxy::$enabled = false;
$view = new \OC_FilesystemView('/');
$session = new \OCA\Encryption\Session($view);
$userId = \OCP\User::getUser();
$util = new Util($view, $userId);
// Format paths to be relative to user files dir
if ($util->isSystemWideMountPoint($params['oldpath'])) {
$baseDir = 'files_encryption/';
$oldKeyfilePath = $baseDir . 'keyfiles/' . $params['oldpath'];
} else {
$baseDir = $userId . '/' . 'files_encryption/';
$oldKeyfilePath = $baseDir . 'keyfiles/' . $params['oldpath'];
}
if ($util->isSystemWideMountPoint($params['newpath'])) {
$newKeyfilePath = $baseDir . 'keyfiles/' . $params['newpath'];
} else {
$newKeyfilePath = $baseDir . 'keyfiles/' . $params['newpath'];
}
// add key ext if this is not an folder
if (!$view->is_dir($oldKeyfilePath)) {
$oldKeyfilePath .= '.key';
$newKeyfilePath .= '.key';
// handle share-keys
$localKeyPath = $view->getLocalFile($baseDir . 'share-keys/' . $params['oldpath']);
$escapedPath = Helper::escapeGlobPattern($localKeyPath);
$matches = glob($escapedPath . '*.shareKey');
foreach ($matches as $src) {
$dst = \OC\Files\Filesystem::normalizePath(str_replace($params['oldpath'], $params['newpath'], $src));
// create destination folder if not exists
if (!file_exists(dirname($dst))) {
mkdir(dirname($dst), 0750, true);
}
rename($src, $dst);
}
} else {
// handle share-keys folders
$oldShareKeyfilePath = $baseDir . 'share-keys/' . $params['oldpath'];
$newShareKeyfilePath = $baseDir . 'share-keys/' . $params['newpath'];
// create destination folder if not exists
if (!$view->file_exists(dirname($newShareKeyfilePath))) {
$view->mkdir(dirname($newShareKeyfilePath), 0750, true);
}
$view->rename($oldShareKeyfilePath, $newShareKeyfilePath);
}
// Rename keyfile so it isn't orphaned
if ($view->file_exists($oldKeyfilePath)) {
// create destination folder if not exists
if (!$view->file_exists(dirname($newKeyfilePath))) {
$view->mkdir(dirname($newKeyfilePath), 0750, true);
}
$view->rename($oldKeyfilePath, $newKeyfilePath);
}
// build the path to the file
$newPath = '/' . $userId . '/files' . $params['newpath'];
$newPathRelative = $params['newpath'];
if ($util->fixFileSize($newPath)) {
// get sharing app state
$sharingEnabled = \OCP\Share::isEnabled();
// get users
$usersSharing = $util->getSharingUsersArray($sharingEnabled, $newPathRelative);
// update sharing-keys
$util->setSharedFileKeyfiles($session, $usersSharing, $newPathRelative);
}
\OC_FileProxy::$enabled = $proxyStatus;
}
/**
* @brief delete all share keys of a given file
* @param \OC_FilesystemView $view
* @param string $userId owner of the file
* @param string $filePath path to the file, relative to the owners file dir
*/
public static function delAllShareKeys(\OC_FilesystemView $view, $userId, $filePath)
{
$util = new util($view, $userId);
if ($util->isSystemWideMountPoint($filePath)) {
$baseDir = '/files_encryption/share-keys/';
} else {
$baseDir = $userId . '/files_encryption/share-keys/';
}
if ($view->is_dir($userId . '/files/' . $filePath)) {
$view->unlink($baseDir . $filePath);
} else {
$localKeyPath = $view->getLocalFile($baseDir . $filePath);
$escapedPath = Helper::escapeGlobPattern($localKeyPath);
$matches = glob($escapedPath . '*.shareKey');
foreach ($matches as $ma) {
$result = unlink($ma);
if (!$result) {
\OCP\Util::writeLog('Encryption library', 'Keyfile or shareKey could not be deleted for file "' . $filePath . '"', \OCP\Util::ERROR);
}
}
}
}
