303 lines
9.2 KiB
PHP
303 lines
9.2 KiB
PHP
<?php
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/**
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* @author Arthur Schiwon <blizzz@owncloud.com>
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* @author Björn Schießle <schiessle@owncloud.com>
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* @author Joas Schilling <nickvergessen@owncloud.com>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <icewind@owncloud.com>
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* @author Thomas Müller <thomas.mueller@tmit.eu>
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* @author Vincent Petry <pvince81@owncloud.com>
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*
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* @copyright Copyright (c) 2015, ownCloud, Inc.
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* @license AGPL-3.0
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*
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* This code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License, version 3,
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OCA\Files_Encryption;
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class Migration {
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/**
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* @var \OC\Files\View
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*/
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private $view;
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private $public_share_key_id;
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private $recovery_key_id;
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public function __construct() {
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$this->view = new \OC\Files\View();
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$this->view->getUpdater()->disable();
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$this->public_share_key_id = Helper::getPublicShareKeyId();
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$this->recovery_key_id = Helper::getRecoveryKeyId();
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}
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public function reorganizeFolderStructure() {
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$this->reorganizeSystemFolderStructure();
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$limit = 500;
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$offset = 0;
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do {
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$users = \OCP\User::getUsers('', $limit, $offset);
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foreach ($users as $user) {
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$this->reorganizeFolderStructureForUser($user);
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}
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$offset += $limit;
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} while (count($users) >= $limit);
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}
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public function reorganizeSystemFolderStructure() {
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$this->createPathForKeys('/files_encryption');
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// backup system wide folders
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$this->backupSystemWideKeys();
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// rename public keys
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$this->renamePublicKeys();
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// rename system wide mount point
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$this->renameFileKeys('', '/files_encryption/keyfiles');
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// rename system private keys
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$this->renameSystemPrivateKeys();
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// delete old system wide folders
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$this->view->deleteAll('/public-keys');
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$this->view->deleteAll('/owncloud_private_key');
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$this->view->deleteAll('/files_encryption/share-keys');
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$this->view->deleteAll('/files_encryption/keyfiles');
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$storage = $this->view->getMount('')->getStorage();
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$storage->getScanner()->scan('files_encryption');
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$storage->getCache()->remove('owncloud_private_key');
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$storage->getCache()->remove('public-keys');
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}
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public function reorganizeFolderStructureForUser($user) {
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// backup all keys
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\OC_Util::tearDownFS();
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\OC_Util::setupFS($user);
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if ($this->backupUserKeys($user)) {
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// create new 'key' folder
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$this->view->mkdir($user . '/files_encryption/keys');
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// rename users private key
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$this->renameUsersPrivateKey($user);
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// rename file keys
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$path = $user . '/files_encryption/keyfiles';
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$this->renameFileKeys($user, $path);
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$trashPath = $user . '/files_trashbin/keyfiles';
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if (\OC_App::isEnabled('files_trashbin') && $this->view->is_dir($trashPath)) {
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$this->renameFileKeys($user, $trashPath, true);
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$this->view->deleteAll($trashPath);
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$this->view->deleteAll($user . '/files_trashbin/share-keys');
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}
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// delete old folders
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$this->deleteOldKeys($user);
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$this->view->getMount('/' . $user)->getStorage()->getScanner()->scan('files_encryption');
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}
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}
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private function backupSystemWideKeys() {
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$backupDir = 'encryption_migration_backup_' . date("Y-m-d_H-i-s");
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$this->view->mkdir($backupDir);
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$this->view->copy('owncloud_private_key', $backupDir . '/owncloud_private_key');
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$this->view->copy('public-keys', $backupDir . '/public-keys');
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$this->view->copy('files_encryption', $backupDir . '/files_encryption');
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}
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private function backupUserKeys($user) {
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$encryptionDir = $user . '/files_encryption';
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if ($this->view->is_dir($encryptionDir)) {
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$backupDir = $user . '/encryption_migration_backup_' . date("Y-m-d_H-i-s");
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$this->view->mkdir($backupDir);
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$this->view->copy($encryptionDir, $backupDir);
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return true;
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}
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return false;
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}
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private function renamePublicKeys() {
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$dh = $this->view->opendir('public-keys');
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$this->createPathForKeys('files_encryption/public_keys');
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if (is_resource($dh)) {
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while (($oldPublicKey = readdir($dh)) !== false) {
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if (!\OC\Files\Filesystem::isIgnoredDir($oldPublicKey)) {
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$newPublicKey = substr($oldPublicKey, 0, strlen($oldPublicKey) - strlen('.public.key')) . '.publicKey';
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$this->view->rename('public-keys/' . $oldPublicKey, 'files_encryption/public_keys/' . $newPublicKey);
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}
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}
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closedir($dh);
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}
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}
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private function renameSystemPrivateKeys() {
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$dh = $this->view->opendir('owncloud_private_key');
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if (is_resource($dh)) {
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while (($oldPrivateKey = readdir($dh)) !== false) {
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if (!\OC\Files\Filesystem::isIgnoredDir($oldPrivateKey)) {
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$newPrivateKey = substr($oldPrivateKey, 0, strlen($oldPrivateKey) - strlen('.private.key')) . '.privateKey';
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$this->view->rename('owncloud_private_key/' . $oldPrivateKey, 'files_encryption/' . $newPrivateKey);
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}
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}
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closedir($dh);
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}
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}
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private function renameUsersPrivateKey($user) {
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$oldPrivateKey = $user . '/files_encryption/' . $user . '.private.key';
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$newPrivateKey = substr($oldPrivateKey, 0, strlen($oldPrivateKey) - strlen('.private.key')) . '.privateKey';
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$this->view->rename($oldPrivateKey, $newPrivateKey);
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}
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private function getFileName($file, $trash) {
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$extLength = strlen('.key');
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if ($trash) {
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$parts = explode('.', $file);
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if ($parts[count($parts) - 1] !== 'key') {
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$extLength = $extLength + strlen('.' . $parts[count($parts) - 1]);
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}
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}
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$filename = substr($file, 0, strlen($file) - $extLength);
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return $filename;
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}
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private function getExtension($file, $trash) {
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$extension = '';
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if ($trash) {
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$parts = explode('.', $file);
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if ($parts[count($parts) - 1] !== 'key') {
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$extension = '.' . $parts[count($parts) - 1];
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}
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}
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return $extension;
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}
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private function getFilePath($path, $user, $trash) {
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$offset = $trash ? strlen($user . '/files_trashbin/keyfiles') : strlen($user . '/files_encryption/keyfiles');
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return substr($path, $offset);
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}
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private function getTargetDir($user, $filePath, $filename, $extension, $trash) {
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if ($trash) {
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$targetDir = $user . '/files_trashbin/keys/' . $filePath . '/' . $filename . $extension;
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} else {
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$targetDir = $user . '/files_encryption/keys/' . $filePath . '/' . $filename . $extension;
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}
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return $targetDir;
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}
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private function renameFileKeys($user, $path, $trash = false) {
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$dh = $this->view->opendir($path);
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if (is_resource($dh)) {
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while (($file = readdir($dh)) !== false) {
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if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
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if ($this->view->is_dir($path . '/' . $file)) {
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$this->renameFileKeys($user, $path . '/' . $file, $trash);
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} else {
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$filename = $this->getFileName($file, $trash);
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$filePath = $this->getFilePath($path, $user, $trash);
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$extension = $this->getExtension($file, $trash);
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$targetDir = $this->getTargetDir($user, $filePath, $filename, $extension, $trash);
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$this->createPathForKeys($targetDir);
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$this->view->rename($path . '/' . $file, $targetDir . '/fileKey');
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$this->renameShareKeys($user, $filePath, $filename, $targetDir, $trash);
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}
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}
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}
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closedir($dh);
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}
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}
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private function getOldShareKeyPath($user, $filePath, $trash) {
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if ($trash) {
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$oldShareKeyPath = $user . '/files_trashbin/share-keys/' . $filePath;
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} else {
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$oldShareKeyPath = $user . '/files_encryption/share-keys/' . $filePath;
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}
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return $oldShareKeyPath;
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}
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private function getUidFromShareKey($file, $filename, $trash) {
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$extLength = strlen('.shareKey');
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if ($trash) {
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$parts = explode('.', $file);
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if ($parts[count($parts) - 1] !== 'shareKey') {
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$extLength = $extLength + strlen('.' . $parts[count($parts) - 1]);
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}
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}
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$uid = substr($file, strlen($filename) + 1, $extLength * -1);
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return $uid;
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}
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private function renameShareKeys($user, $filePath, $filename, $target, $trash) {
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$oldShareKeyPath = $this->getOldShareKeyPath($user, $filePath, $trash);
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$dh = $this->view->opendir($oldShareKeyPath);
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if (is_resource($dh)) {
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while (($file = readdir($dh)) !== false) {
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if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
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if ($this->view->is_dir($oldShareKeyPath . '/' . $file)) {
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continue;
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} else {
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if (substr($file, 0, strlen($filename) + 1) === $filename . '.') {
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$uid = $this->getUidFromShareKey($file, $filename, $trash);
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$this->view->rename($oldShareKeyPath . '/' . $file, $target . '/' . $uid . '.shareKey');
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}
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}
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}
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}
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closedir($dh);
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}
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}
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private function deleteOldKeys($user) {
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$this->view->deleteAll($user . '/files_encryption/keyfiles');
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$this->view->deleteAll($user . '/files_encryption/share-keys');
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}
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private function createPathForKeys($path) {
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if (!$this->view->file_exists($path)) {
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$sub_dirs = explode('/', $path);
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$dir = '';
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foreach ($sub_dirs as $sub_dir) {
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$dir .= '/' . $sub_dir;
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if (!$this->view->is_dir($dir)) {
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$this->view->mkdir($dir);
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}
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}
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}
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}
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}
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