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<?php
/**
* @author Björn Schießle <bjoern@schiessle.org>
* @author Joas Schilling <nickvergessen@owncloud.com>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @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\Core\Command\Encryption;
use OCP\App\IAppManager;
use OCP\Encryption\IManager;
use OCP\IConfig;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Question\ConfirmationQuestion;
class DecryptAll extends Command {
/** @var IManager */
protected $encryptionManager;
/** @var IAppManager */
protected $appManager;
/** @var IConfig */
protected $config;
/** @var QuestionHelper */
protected $questionHelper;
/** @var bool */
protected $wasTrashbinEnabled;
/** @var bool */
protected $wasSingleUserModeEnabled;
/** @var \OC\Encryption\DecryptAll */
protected $decryptAll;
/**
* @param IManager $encryptionManager
* @param IAppManager $appManager
* @param IConfig $config
* @param \OC\Encryption\DecryptAll $decryptAll
* @param QuestionHelper $questionHelper
*/
public function __construct(
IManager $encryptionManager,
IAppManager $appManager,
IConfig $config,
\OC\Encryption\DecryptAll $decryptAll,
QuestionHelper $questionHelper
) {
parent::__construct();
$this->appManager = $appManager;
$this->encryptionManager = $encryptionManager;
$this->config = $config;
$this->decryptAll = $decryptAll;
$this->questionHelper = $questionHelper;
}
/**
* Set single user mode and disable the trashbin app
*/
protected function forceSingleUserAndTrashbin() {
$this->wasTrashbinEnabled = $this->appManager->isEnabledForUser('files_trashbin');
$this->wasSingleUserModeEnabled = $this->config->getSystemValue('singleuser', false);
$this->config->setSystemValue('singleuser', true);
$this->appManager->disableApp('files_trashbin');
}
/**
* Reset the single user mode and re-enable the trashbin app
*/
protected function resetSingleUserAndTrashbin() {
$this->config->setSystemValue('singleuser', $this->wasSingleUserModeEnabled);
if ($this->wasTrashbinEnabled) {
$this->appManager->enableApp('files_trashbin');
}
}
protected function configure() {
parent::configure();
$this->setName('encryption:decrypt-all');
$this->setDescription('Disable server-side encryption and decrypt all files');
$this->setHelp(
'This will disable server-side encryption and decrypt all files for '
. 'all users if it is supported by your encryption module. '
. 'Please make sure that no user access his files during this process!'
);
$this->addArgument(
'user',
InputArgument::OPTIONAL,
'user for which you want to decrypt all files (optional)',
''
);
}
protected function execute(InputInterface $input, OutputInterface $output) {
try {
if ($this->encryptionManager->isEnabled() === true) {
$output->write('Disable server side encryption... ');
$this->config->setAppValue('core', 'encryption_enabled', 'no');
$output->writeln('done.');
} else {
$output->writeln('Server side encryption not enabled. Nothing to do.');
return;
}
$uid = $input->getArgument('user');
if ($uid === '') {
$message = 'your ownCloud';
} else {
$message = "$uid's account";
}
$output->writeln("\n");
$output->writeln("You are about to start to decrypt all files stored in $message.");
$output->writeln('It will depend on the encryption module and your setup if this is possible.');
$output->writeln('Depending on the number and size of your files this can take some time');
$output->writeln('Please make sure that no user access his files during this process!');
$output->writeln('');
$question = new ConfirmationQuestion('Do you really want to continue? (y/n) ', false);
if ($this->questionHelper->ask($input, $output, $question)) {
$this->forceSingleUserAndTrashbin();
$user = $input->getArgument('user');
$result = $this->decryptAll->decryptAll($input, $output, $user);
if ($result === false) {
$output->writeln(' aborted.');
$output->writeln('Server side encryption remains enabled');
$this->config->setAppValue('core', 'encryption_enabled', 'yes');
} else if ($uid !== '') {
$output->writeln('Server side encryption remains enabled');
$this->config->setAppValue('core', 'encryption_enabled', 'yes');
}
$this->resetSingleUserAndTrashbin();
} else {
$output->write('Enable server side encryption... ');
$this->config->setAppValue('core', 'encryption_enabled', 'yes');
$output->writeln('done.');
$output->writeln('aborted');
}
} catch (\Exception $e) {
// enable server side encryption again if something went wrong
$this->config->setAppValue('core', 'encryption_enabled', 'yes');
$this->resetSingleUserAndTrashbin();
throw $e;
}
}
}
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