304 lines
8.1 KiB
PHP
304 lines
8.1 KiB
PHP
<?php
|
|
/**
|
|
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
|
*
|
|
* @author Bjoern Schiessle <bjoern@schiessle.org>
|
|
* @author Björn Schießle <bjoern@schiessle.org>
|
|
* @author Christian Jürges <christian@eqipe.ch>
|
|
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
|
* @author Joas Schilling <coding@schilljs.com>
|
|
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
|
* @author sammo2828 <sammo2828@gmail.com>
|
|
* @author Vincent Petry <pvince81@owncloud.com>
|
|
*
|
|
* @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 OC\Encryption;
|
|
|
|
use OC\Encryption\Exceptions\DecryptionFailedException;
|
|
use OC\Files\View;
|
|
use OCP\Encryption\IEncryptionModule;
|
|
use OCP\IUserManager;
|
|
use Symfony\Component\Console\Helper\ProgressBar;
|
|
use Symfony\Component\Console\Input\InputInterface;
|
|
use Symfony\Component\Console\Output\OutputInterface;
|
|
|
|
class DecryptAll {
|
|
|
|
/** @var OutputInterface */
|
|
protected $output;
|
|
|
|
/** @var InputInterface */
|
|
protected $input;
|
|
|
|
/** @var Manager */
|
|
protected $encryptionManager;
|
|
|
|
/** @var IUserManager */
|
|
protected $userManager;
|
|
|
|
/** @var View */
|
|
protected $rootView;
|
|
|
|
/** @var array files which couldn't be decrypted */
|
|
protected $failed;
|
|
|
|
/**
|
|
* @param Manager $encryptionManager
|
|
* @param IUserManager $userManager
|
|
* @param View $rootView
|
|
*/
|
|
public function __construct(
|
|
Manager $encryptionManager,
|
|
IUserManager $userManager,
|
|
View $rootView
|
|
) {
|
|
$this->encryptionManager = $encryptionManager;
|
|
$this->userManager = $userManager;
|
|
$this->rootView = $rootView;
|
|
$this->failed = [];
|
|
}
|
|
|
|
/**
|
|
* start to decrypt all files
|
|
*
|
|
* @param InputInterface $input
|
|
* @param OutputInterface $output
|
|
* @param string $user which users data folder should be decrypted, default = all users
|
|
* @return bool
|
|
* @throws \Exception
|
|
*/
|
|
public function decryptAll(InputInterface $input, OutputInterface $output, $user = '') {
|
|
|
|
$this->input = $input;
|
|
$this->output = $output;
|
|
|
|
if ($user !== '' && $this->userManager->userExists($user) === false) {
|
|
$this->output->writeln('User "' . $user . '" does not exist. Please check the username and try again');
|
|
return false;
|
|
}
|
|
|
|
$this->output->writeln('prepare encryption modules...');
|
|
if ($this->prepareEncryptionModules($user) === false) {
|
|
return false;
|
|
}
|
|
$this->output->writeln(' done.');
|
|
|
|
$this->decryptAllUsersFiles($user);
|
|
|
|
if (empty($this->failed)) {
|
|
$this->output->writeln('all files could be decrypted successfully!');
|
|
} else {
|
|
$this->output->writeln('Files for following users couldn\'t be decrypted, ');
|
|
$this->output->writeln('maybe the user is not set up in a way that supports this operation: ');
|
|
foreach ($this->failed as $uid => $paths) {
|
|
$this->output->writeln(' ' . $uid);
|
|
foreach ($paths as $path) {
|
|
$this->output->writeln(' ' . $path);
|
|
}
|
|
}
|
|
$this->output->writeln('');
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* prepare encryption modules to perform the decrypt all function
|
|
*
|
|
* @param $user
|
|
* @return bool
|
|
*/
|
|
protected function prepareEncryptionModules($user) {
|
|
// prepare all encryption modules for decrypt all
|
|
$encryptionModules = $this->encryptionManager->getEncryptionModules();
|
|
foreach ($encryptionModules as $moduleDesc) {
|
|
/** @var IEncryptionModule $module */
|
|
$module = call_user_func($moduleDesc['callback']);
|
|
$this->output->writeln('');
|
|
$this->output->writeln('Prepare "' . $module->getDisplayName() . '"');
|
|
$this->output->writeln('');
|
|
if ($module->prepareDecryptAll($this->input, $this->output, $user) === false) {
|
|
$this->output->writeln('Module "' . $moduleDesc['displayName'] . '" does not support the functionality to decrypt all files again or the initialization of the module failed!');
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* iterate over all user and encrypt their files
|
|
*
|
|
* @param string $user which users files should be decrypted, default = all users
|
|
*/
|
|
protected function decryptAllUsersFiles($user = '') {
|
|
|
|
$this->output->writeln("\n");
|
|
|
|
$userList = [];
|
|
if ($user === '') {
|
|
|
|
$fetchUsersProgress = new ProgressBar($this->output);
|
|
$fetchUsersProgress->setFormat(" %message% \n [%bar%]");
|
|
$fetchUsersProgress->start();
|
|
$fetchUsersProgress->setMessage("Fetch list of users...");
|
|
$fetchUsersProgress->advance();
|
|
|
|
foreach ($this->userManager->getBackends() as $backend) {
|
|
$limit = 500;
|
|
$offset = 0;
|
|
do {
|
|
$users = $backend->getUsers('', $limit, $offset);
|
|
foreach ($users as $user) {
|
|
$userList[] = $user;
|
|
}
|
|
$offset += $limit;
|
|
$fetchUsersProgress->advance();
|
|
} while (count($users) >= $limit);
|
|
$fetchUsersProgress->setMessage("Fetch list of users... finished");
|
|
$fetchUsersProgress->finish();
|
|
}
|
|
} else {
|
|
$userList[] = $user;
|
|
}
|
|
|
|
$this->output->writeln("\n\n");
|
|
|
|
$progress = new ProgressBar($this->output);
|
|
$progress->setFormat(" %message% \n [%bar%]");
|
|
$progress->start();
|
|
$progress->setMessage("starting to decrypt files...");
|
|
$progress->advance();
|
|
|
|
$numberOfUsers = count($userList);
|
|
$userNo = 1;
|
|
foreach ($userList as $uid) {
|
|
$userCount = "$uid ($userNo of $numberOfUsers)";
|
|
$this->decryptUsersFiles($uid, $progress, $userCount);
|
|
$userNo++;
|
|
}
|
|
|
|
$progress->setMessage("starting to decrypt files... finished");
|
|
$progress->finish();
|
|
|
|
$this->output->writeln("\n\n");
|
|
|
|
}
|
|
|
|
/**
|
|
* encrypt files from the given user
|
|
*
|
|
* @param string $uid
|
|
* @param ProgressBar $progress
|
|
* @param string $userCount
|
|
*/
|
|
protected function decryptUsersFiles($uid, ProgressBar $progress, $userCount) {
|
|
|
|
$this->setupUserFS($uid);
|
|
$directories = [];
|
|
$directories[] = '/' . $uid . '/files';
|
|
|
|
while ($root = array_pop($directories)) {
|
|
$content = $this->rootView->getDirectoryContent($root);
|
|
foreach ($content as $file) {
|
|
// only decrypt files owned by the user
|
|
if($file->getStorage()->instanceOfStorage('OCA\Files_Sharing\SharedStorage')) {
|
|
continue;
|
|
}
|
|
$path = $root . '/' . $file['name'];
|
|
if ($this->rootView->is_dir($path)) {
|
|
$directories[] = $path;
|
|
continue;
|
|
} else {
|
|
try {
|
|
$progress->setMessage("decrypt files for user $userCount: $path");
|
|
$progress->advance();
|
|
if ($file->isEncrypted() === false) {
|
|
$progress->setMessage("decrypt files for user $userCount: $path (already decrypted)");
|
|
$progress->advance();
|
|
} else {
|
|
if ($this->decryptFile($path) === false) {
|
|
$progress->setMessage("decrypt files for user $userCount: $path (already decrypted)");
|
|
$progress->advance();
|
|
}
|
|
}
|
|
} catch (\Exception $e) {
|
|
if (isset($this->failed[$uid])) {
|
|
$this->failed[$uid][] = $path;
|
|
} else {
|
|
$this->failed[$uid] = [$path];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* encrypt file
|
|
*
|
|
* @param string $path
|
|
* @return bool
|
|
*/
|
|
protected function decryptFile($path) {
|
|
|
|
// skip already decrypted files
|
|
$fileInfo = $this->rootView->getFileInfo($path);
|
|
if ($fileInfo !== false && !$fileInfo->isEncrypted()) {
|
|
return true;
|
|
}
|
|
|
|
$source = $path;
|
|
$target = $path . '.decrypted.' . $this->getTimestamp();
|
|
|
|
try {
|
|
$this->rootView->copy($source, $target);
|
|
$this->rootView->touch($target, $fileInfo->getMTime());
|
|
$this->rootView->rename($target, $source);
|
|
} catch (DecryptionFailedException $e) {
|
|
if ($this->rootView->file_exists($target)) {
|
|
$this->rootView->unlink($target);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* get current timestamp
|
|
*
|
|
* @return int
|
|
*/
|
|
protected function getTimestamp() {
|
|
return time();
|
|
}
|
|
|
|
|
|
/**
|
|
* setup user file system
|
|
*
|
|
* @param string $uid
|
|
*/
|
|
protected function setupUserFS($uid) {
|
|
\OC_Util::tearDownFS();
|
|
\OC_Util::setupFS($uid);
|
|
}
|
|
|
|
}
|