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-rw-r--r--apps/encryption/lib/Migration.php395
1 files changed, 0 insertions, 395 deletions
diff --git a/apps/encryption/lib/Migration.php b/apps/encryption/lib/Migration.php
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--- a/apps/encryption/lib/Migration.php
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-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Björn Schießle <bjoern@schiessle.org>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Robin Appelman <robin@icewind.nl>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-
-namespace OCA\Encryption;
-
-
-use OC\Files\View;
-use OCP\App\IAppManager;
-use OCP\IConfig;
-use OCP\IDBConnection;
-use OCP\ILogger;
-
-class Migration {
-
- private $moduleId;
- /** @var \OC\Files\View */
- private $view;
- /** @var \OCP\IDBConnection */
- private $connection;
- /** @var IConfig */
- private $config;
- /** @var ILogger */
- private $logger;
- /** @var string*/
- protected $installedVersion;
- /** @var IAppManager */
- protected $appManager;
-
- /**
- * @param IConfig $config
- * @param View $view
- * @param IDBConnection $connection
- * @param ILogger $logger
- */
- public function __construct(IConfig $config, View $view, IDBConnection $connection, ILogger $logger, IAppManager $appManager) {
- $this->view = $view;
- $this->view->disableCacheUpdate();
- $this->connection = $connection;
- $this->moduleId = \OCA\Encryption\Crypto\Encryption::ID;
- $this->config = $config;
- $this->logger = $logger;
- $this->installedVersion = $this->config->getAppValue('files_encryption', 'installed_version', '-1');
- $this->appManager = $appManager;
- }
-
- public function finalCleanUp() {
- $this->view->deleteAll('files_encryption/public_keys');
- $this->updateFileCache();
- $this->config->deleteAppValue('files_encryption', 'installed_version');
- }
-
- /**
- * update file cache, copy unencrypted_size to the 'size' column
- */
- private function updateFileCache() {
- // make sure that we don't update the file cache multiple times
- // only update during the first run
- if ($this->installedVersion !== '-1') {
- $query = $this->connection->getQueryBuilder();
- $query->update('filecache')
- ->set('size', 'unencrypted_size')
- ->where($query->expr()->eq('encrypted', $query->createParameter('encrypted')))
- ->setParameter('encrypted', 1);
- $query->execute();
- }
- }
-
- /**
- * iterate through users and reorganize the folder structure
- */
- public function reorganizeFolderStructure() {
- $this->reorganizeSystemFolderStructure();
-
- $limit = 500;
- $offset = 0;
- do {
- $users = \OCP\User::getUsers('', $limit, $offset);
- foreach ($users as $user) {
- $this->reorganizeFolderStructureForUser($user);
- }
- $offset += $limit;
- } while (count($users) >= $limit);
- }
-
- /**
- * reorganize system wide folder structure
- */
- public function reorganizeSystemFolderStructure() {
-
- $this->createPathForKeys('/files_encryption');
-
- // backup system wide folders
- $this->backupSystemWideKeys();
-
- // rename system wide mount point
- $this->renameFileKeys('', '/files_encryption/keys');
-
- // rename system private keys
- $this->renameSystemPrivateKeys();
-
- $storage = $this->view->getMount('')->getStorage();
- $storage->getScanner()->scan('files_encryption');
- }
-
-
- /**
- * reorganize folder structure for user
- *
- * @param string $user
- */
- public function reorganizeFolderStructureForUser($user) {
- // backup all keys
- \OC_Util::tearDownFS();
- \OC_Util::setupFS($user);
- if ($this->backupUserKeys($user)) {
- // rename users private key
- $this->renameUsersPrivateKey($user);
- $this->renameUsersPublicKey($user);
- // rename file keys
- $path = '/files_encryption/keys';
- $this->renameFileKeys($user, $path);
- $trashPath = '/files_trashbin/keys';
- if ($this->appManager->isEnabledForUser('files_trashbin') && $this->view->is_dir($user . '/' . $trashPath)) {
- $this->renameFileKeys($user, $trashPath, true);
- $this->view->deleteAll($trashPath);
- }
- // delete old folders
- $this->deleteOldKeys($user);
- $this->view->getMount('/' . $user)->getStorage()->getScanner()->scan('files_encryption');
- }
- }
-
- /**
- * update database
- */
- public function updateDB() {
-
- // make sure that we don't update the file cache multiple times
- // only update during the first run
- if ($this->installedVersion === '-1') {
- return;
- }
-
- // delete left-over from old encryption which is no longer needed
- $this->config->deleteAppValue('files_encryption', 'ocsid');
- $this->config->deleteAppValue('files_encryption', 'types');
- $this->config->deleteAppValue('files_encryption', 'enabled');
-
- $oldAppValues = $this->connection->getQueryBuilder();
- $oldAppValues->select('*')
- ->from('appconfig')
- ->where($oldAppValues->expr()->eq('appid', $oldAppValues->createParameter('appid')))
- ->setParameter('appid', 'files_encryption');
- $appSettings = $oldAppValues->execute();
-
- while ($row = $appSettings->fetch()) {
- // 'installed_version' gets deleted at the end of the migration process
- if ($row['configkey'] !== 'installed_version' ) {
- $this->config->setAppValue('encryption', $row['configkey'], $row['configvalue']);
- $this->config->deleteAppValue('files_encryption', $row['configkey']);
- }
- }
-
- $oldPreferences = $this->connection->getQueryBuilder();
- $oldPreferences->select('*')
- ->from('preferences')
- ->where($oldPreferences->expr()->eq('appid', $oldPreferences->createParameter('appid')))
- ->setParameter('appid', 'files_encryption');
- $preferenceSettings = $oldPreferences->execute();
-
- while ($row = $preferenceSettings->fetch()) {
- $this->config->setUserValue($row['userid'], 'encryption', $row['configkey'], $row['configvalue']);
- $this->config->deleteUserValue($row['userid'], 'files_encryption', $row['configkey']);
- }
- }
-
- /**
- * create backup of system-wide keys
- */
- private function backupSystemWideKeys() {
- $backupDir = 'encryption_migration_backup_' . date("Y-m-d_H-i-s");
- $this->view->mkdir($backupDir);
- $this->view->copy('files_encryption', $backupDir . '/files_encryption');
- }
-
- /**
- * create backup of user specific keys
- *
- * @param string $user
- * @return bool
- */
- private function backupUserKeys($user) {
- $encryptionDir = $user . '/files_encryption';
- if ($this->view->is_dir($encryptionDir)) {
- $backupDir = $user . '/encryption_migration_backup_' . date("Y-m-d_H-i-s");
- $this->view->mkdir($backupDir);
- $this->view->copy($encryptionDir, $backupDir);
- return true;
- }
- return false;
- }
-
- /**
- * rename system-wide private keys
- */
- private function renameSystemPrivateKeys() {
- $dh = $this->view->opendir('files_encryption');
- $this->createPathForKeys('/files_encryption/' . $this->moduleId );
- if (is_resource($dh)) {
- while (($privateKey = readdir($dh)) !== false) {
- if (!\OC\Files\Filesystem::isIgnoredDir($privateKey) ) {
- if (!$this->view->is_dir('/files_encryption/' . $privateKey)) {
- $this->view->rename('files_encryption/' . $privateKey, 'files_encryption/' . $this->moduleId . '/' . $privateKey);
- $this->renameSystemPublicKey($privateKey);
- }
- }
- }
- closedir($dh);
- }
- }
-
- /**
- * rename system wide public key
- *
- * @param string $privateKey private key for which we want to rename the corresponding public key
- */
- private function renameSystemPublicKey($privateKey) {
- $publicKey = substr($privateKey,0 , strrpos($privateKey, '.privateKey')) . '.publicKey';
- $this->view->rename('files_encryption/public_keys/' . $publicKey, 'files_encryption/' . $this->moduleId . '/' . $publicKey);
- }
-
- /**
- * rename user-specific private keys
- *
- * @param string $user
- */
- private function renameUsersPrivateKey($user) {
- $oldPrivateKey = $user . '/files_encryption/' . $user . '.privateKey';
- $newPrivateKey = $user . '/files_encryption/' . $this->moduleId . '/' . $user . '.privateKey';
- if ($this->view->file_exists($oldPrivateKey)) {
- $this->createPathForKeys(dirname($newPrivateKey));
- $this->view->rename($oldPrivateKey, $newPrivateKey);
- }
- }
-
- /**
- * rename user-specific public keys
- *
- * @param string $user
- */
- private function renameUsersPublicKey($user) {
- $oldPublicKey = '/files_encryption/public_keys/' . $user . '.publicKey';
- $newPublicKey = $user . '/files_encryption/' . $this->moduleId . '/' . $user . '.publicKey';
- if ($this->view->file_exists($oldPublicKey)) {
- $this->createPathForKeys(dirname($newPublicKey));
- $this->view->rename($oldPublicKey, $newPublicKey);
- }
- }
-
- /**
- * rename file keys
- *
- * @param string $user
- * @param string $path
- * @param bool $trash
- */
- private function renameFileKeys($user, $path, $trash = false) {
-
- if ($this->view->is_dir($user . '/' . $path) === false) {
- $this->logger->info('Skip dir /' . $user . '/' . $path . ': does not exist');
- return;
- }
-
- $dh = $this->view->opendir($user . '/' . $path);
-
- if (is_resource($dh)) {
- while (($file = readdir($dh)) !== false) {
- if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
- if ($this->view->is_dir($user . '/' . $path . '/' . $file)) {
- $this->renameFileKeys($user, $path . '/' . $file, $trash);
- } else {
- $target = $this->getTargetDir($user, $path, $file, $trash);
- if ($target !== false) {
- $this->createPathForKeys(dirname($target));
- $this->view->rename($user . '/' . $path . '/' . $file, $target);
- } else {
- $this->logger->warning(
- 'did not move key "' . $file
- . '" could not find the corresponding file in /data/' . $user . '/files.'
- . 'Most likely the key was already moved in a previous migration run and is already on the right place.');
- }
- }
- }
- }
- closedir($dh);
- }
- }
-
- /**
- * get system mount points
- * wrap static method so that it can be mocked for testing
- *
- * @internal
- * @return array
- */
- protected function getSystemMountPoints() {
- return \OC_Mount_Config::getSystemMountPoints();
- }
-
- /**
- * generate target directory
- *
- * @param string $user
- * @param string $keyPath
- * @param string $filename
- * @param bool $trash
- * @return string
- */
- private function getTargetDir($user, $keyPath, $filename, $trash) {
- if ($trash) {
- $filePath = substr($keyPath, strlen('/files_trashbin/keys/'));
- $targetDir = $user . '/files_encryption/keys/files_trashbin/' . $filePath . '/' . $this->moduleId . '/' . $filename;
- } else {
- $filePath = substr($keyPath, strlen('/files_encryption/keys/'));
- $targetDir = $user . '/files_encryption/keys/files/' . $filePath . '/' . $this->moduleId . '/' . $filename;
- }
-
- if ($user === '') {
- // for system wide mounts we need to check if the mount point really exists
- $normalized = \OC\Files\Filesystem::normalizePath($filePath);
- $systemMountPoints = $this->getSystemMountPoints();
- foreach ($systemMountPoints as $mountPoint) {
- $normalizedMountPoint = \OC\Files\Filesystem::normalizePath($mountPoint['mountpoint']) . '/';
- if (strpos($normalized, $normalizedMountPoint) === 0)
- return $targetDir;
- }
- } else if ($trash === false && $this->view->file_exists('/' . $user. '/files/' . $filePath)) {
- return $targetDir;
- } else if ($trash === true && $this->view->file_exists('/' . $user. '/files_trashbin/' . $filePath)) {
- return $targetDir;
- }
-
- return false;
- }
-
- /**
- * delete old keys
- *
- * @param string $user
- */
- private function deleteOldKeys($user) {
- $this->view->deleteAll($user . '/files_encryption/keyfiles');
- $this->view->deleteAll($user . '/files_encryption/share-keys');
- }
-
- /**
- * create directories for the keys recursively
- *
- * @param string $path
- */
- private function createPathForKeys($path) {
- if (!$this->view->file_exists($path)) {
- $sub_dirs = explode('/', $path);
- $dir = '';
- foreach ($sub_dirs as $sub_dir) {
- $dir .= '/' . $sub_dir;
- if (!$this->view->is_dir($dir)) {
- $this->view->mkdir($dir);
- }
- }
- }
- }
-}