143 lines
4 KiB
PHP
143 lines
4 KiB
PHP
<?php
|
|
/**
|
|
* @author Björn Schießle <schiessle@owncloud.com>
|
|
*
|
|
* @copyright Copyright (c) 2015, 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 OCA\Encryption\Crypto;
|
|
|
|
|
|
use OCA\Encryption\KeyManager;
|
|
use OCA\Encryption\Session;
|
|
use OCA\Encryption\Util;
|
|
use Symfony\Component\Console\Helper\QuestionHelper;
|
|
use Symfony\Component\Console\Input\InputInterface;
|
|
use Symfony\Component\Console\Output\OutputInterface;
|
|
use Symfony\Component\Console\Question\ConfirmationQuestion;
|
|
use Symfony\Component\Console\Question\Question;
|
|
|
|
class DecryptAll {
|
|
|
|
/** @var Util */
|
|
protected $util;
|
|
|
|
/** @var QuestionHelper */
|
|
protected $questionHelper;
|
|
|
|
/** @var Crypt */
|
|
protected $crypt;
|
|
|
|
/** @var KeyManager */
|
|
protected $keyManager;
|
|
|
|
/** @var Session */
|
|
protected $session;
|
|
|
|
/**
|
|
* @param Util $util
|
|
* @param KeyManager $keyManager
|
|
* @param Crypt $crypt
|
|
* @param Session $session
|
|
* @param QuestionHelper $questionHelper
|
|
*/
|
|
public function __construct(
|
|
Util $util,
|
|
KeyManager $keyManager,
|
|
Crypt $crypt,
|
|
Session $session,
|
|
QuestionHelper $questionHelper
|
|
) {
|
|
$this->util = $util;
|
|
$this->keyManager = $keyManager;
|
|
$this->crypt = $crypt;
|
|
$this->session = $session;
|
|
$this->questionHelper = $questionHelper;
|
|
}
|
|
|
|
/**
|
|
* prepare encryption module to decrypt all files
|
|
*
|
|
* @param InputInterface $input
|
|
* @param OutputInterface $output
|
|
* @param $user
|
|
* @return bool
|
|
*/
|
|
public function prepare(InputInterface $input, OutputInterface $output, $user) {
|
|
|
|
$question = new Question('Please enter the recovery key password: ');
|
|
$recoveryKeyId = $this->keyManager->getRecoveryKeyId();
|
|
|
|
if (!empty($user)) {
|
|
$questionUseLoginPassword = new ConfirmationQuestion(
|
|
'Do you want to use the users login password to decrypt all files? (y/n) ',
|
|
false
|
|
);
|
|
$useLoginPassword = $this->questionHelper->ask($input, $output, $questionUseLoginPassword);
|
|
if ($useLoginPassword) {
|
|
$question = new Question('Please enter the users login password: ');
|
|
} else if ($this->util->isRecoveryEnabledForUser($user) === false) {
|
|
$output->writeln('No recovery key available for user ' . $user);
|
|
return false;
|
|
} else {
|
|
$user = $recoveryKeyId;
|
|
}
|
|
} else {
|
|
$user = $recoveryKeyId;
|
|
}
|
|
|
|
$question->setHidden(true);
|
|
$question->setHiddenFallback(false);
|
|
$password = $this->questionHelper->ask($input, $output, $question);
|
|
$privateKey = $this->getPrivateKey($user, $password);
|
|
if ($privateKey !== false) {
|
|
$this->updateSession($user, $privateKey);
|
|
return true;
|
|
} else {
|
|
$output->writeln('Could not decrypt private key, maybe you entered the wrong password?');
|
|
}
|
|
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* get the private key which will be used to decrypt all files
|
|
*
|
|
* @param string $user
|
|
* @param string $password
|
|
* @return bool|string
|
|
* @throws \OCA\Encryption\Exceptions\PrivateKeyMissingException
|
|
*/
|
|
protected function getPrivateKey($user, $password) {
|
|
$recoveryKeyId = $this->keyManager->getRecoveryKeyId();
|
|
if ($user === $recoveryKeyId) {
|
|
$recoveryKey = $this->keyManager->getSystemPrivateKey($recoveryKeyId);
|
|
$privateKey = $this->crypt->decryptPrivateKey($recoveryKey, $password);
|
|
} else {
|
|
$userKey = $this->keyManager->getPrivateKey($user);
|
|
$privateKey = $this->crypt->decryptPrivateKey($userKey, $password, $user);
|
|
}
|
|
|
|
return $privateKey;
|
|
}
|
|
|
|
protected function updateSession($user, $privateKey) {
|
|
$this->session->prepareDecryptAll($user, $privateKey);
|
|
}
|
|
}
|