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<?php
/**
* @copyright Copyright (c) 2017 Bjoern Schiessle <bjoern@schiessle.org>
*
* @author Bjoern Schiessle <bjoern@schiessle.org>
* @author Lukas Reschke <lukas@statuscode.ch>
* @author Patrik Kernstock <info@pkern.at>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* 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
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OC\Settings\BackgroundJobs;
use OC\Accounts\AccountManager;
use OC\BackgroundJob\Job;
use OC\BackgroundJob\JobList;
use OCP\AppFramework\Http;
use OCP\BackgroundJob\IJobList;
use OCP\Http\Client\IClientService;
use OCP\IConfig;
use OCP\ILogger;
use OCP\IUserManager;
class VerifyUserData extends Job {
/** @var bool */
private $retainJob = true;
/** @var int max number of attempts to send the request */
private $maxTry = 24;
/** @var int how much time should be between two tries (1 hour) */
private $interval = 3600;
/** @var AccountManager */
private $accountManager;
/** @var IUserManager */
private $userManager;
/** @var IClientService */
private $httpClientService;
/** @var ILogger */
private $logger;
/** @var string */
private $lookupServerUrl;
/**
* VerifyUserData constructor.
*
* @param AccountManager $accountManager
* @param IUserManager $userManager
* @param IClientService $clientService
* @param ILogger $logger
* @param IConfig $config
*/
public function __construct(AccountManager $accountManager,
IUserManager $userManager,
IClientService $clientService,
ILogger $logger,
IConfig $config
) {
$this->accountManager = $accountManager;
$this->userManager = $userManager;
$this->httpClientService = $clientService;
$this->logger = $logger;
$lookupServerUrl = $config->getSystemValue('lookup_server', 'https://lookup.nextcloud.com');
$this->lookupServerUrl = rtrim($lookupServerUrl, '/');
}
/**
* run the job, then remove it from the jobList
*
* @param JobList $jobList
* @param ILogger|null $logger
*/
public function execute($jobList, ILogger $logger = null) {
if ($this->shouldRun($this->argument)) {
parent::execute($jobList, $logger);
$jobList->remove($this, $this->argument);
if ($this->retainJob) {
$this->reAddJob($jobList, $this->argument);
} else {
$this->resetVerificationState();
}
}
}
protected function run($argument) {
$try = (int)$argument['try'] + 1;
switch($argument['type']) {
case AccountManager::PROPERTY_WEBSITE:
$result = $this->verifyWebsite($argument);
break;
case AccountManager::PROPERTY_TWITTER:
case AccountManager::PROPERTY_EMAIL:
$result = $this->verifyViaLookupServer($argument, $argument['type']);
break;
default:
// no valid type given, no need to retry
$this->logger->error($argument['type'] . ' is no valid type for user account data.');
$result = true;
}
if ($result === true || $try > $this->maxTry) {
$this->retainJob = false;
}
}
/**
* verify web page
*
* @param array $argument
* @return bool true if we could check the verification code, otherwise false
*/
protected function verifyWebsite(array $argument) {
$result = false;
$url = rtrim($argument['data'], '/') . '/.well-known/' . 'CloudIdVerificationCode.txt';
$client = $this->httpClientService->newClient();
try {
$response = $client->get($url);
} catch (\Exception $e) {
return false;
}
if ($response->getStatusCode() === Http::STATUS_OK) {
$result = true;
$publishedCode = $response->getBody();
// remove new lines and spaces
$publishedCodeSanitized = trim(preg_replace('/\s\s+/', ' ', $publishedCode));
$user = $this->userManager->get($argument['uid']);
// we don't check a valid user -> give up
if ($user === null) {
$this->logger->error($argument['uid'] . ' doesn\'t exist, can\'t verify user data.');
return $result;
}
$userData = $this->accountManager->getUser($user);
if ($publishedCodeSanitized === $argument['verificationCode']) {
$userData[AccountManager::PROPERTY_WEBSITE]['verified'] = AccountManager::VERIFIED;
} else {
$userData[AccountManager::PROPERTY_WEBSITE]['verified'] = AccountManager::NOT_VERIFIED;
}
$this->accountManager->updateUser($user, $userData);
}
return $result;
}
/**
* verify email address
*
* @param array $argument
* @param string $dataType
* @return bool true if we could check the verification code, otherwise false
*/
protected function verifyViaLookupServer(array $argument, $dataType) {
$user = $this->userManager->get($argument['uid']);
// we don't check a valid user -> give up
if ($user === null) {
$this->logger->error($argument['uid'] . ' doesn\'t exist, can\'t verify user data.');
return true;
}
$localUserData = $this->accountManager->getUser($user);
$cloudId = $user->getCloudId();
// ask lookup-server for user data
$lookupServerData = $this->queryLookupServer($cloudId);
// for some reasons we couldn't read any data from the lookup server, try again later
if (empty($lookupServerData)) {
return false;
}
// lookup server has verification data for wrong user data (e.g. email address), try again later
if ($lookupServerData[$dataType]['value'] !== $argument['data']) {
return false;
}
// lookup server hasn't verified the email address so far, try again later
if ($lookupServerData[$dataType]['verified'] === AccountManager::NOT_VERIFIED) {
return false;
}
$localUserData[$dataType]['verified'] = AccountManager::VERIFIED;
$this->accountManager->updateUser($user, $localUserData);
return true;
}
/**
* @param string $cloudId
* @return array
*/
protected function queryLookupServer($cloudId) {
try {
$client = $this->httpClientService->newClient();
$response = $client->get(
$this->lookupServerUrl . '/users?search=' . urlencode($cloudId) . '&exactCloudId=1',
[
'timeout' => 10,
'connect_timeout' => 3,
]
);
$body = json_decode($response->getBody(), true);
if (is_array($body) && isset($body['federationId']) && $body['federationId'] === $cloudId) {
return $body;
}
} catch (\Exception $e) {
// do nothing, we will just re-try later
}
return [];
}
/**
* re-add background job with new arguments
*
* @param IJobList $jobList
* @param array $argument
*/
protected function reAddJob(IJobList $jobList, array $argument) {
$jobList->add('OC\Settings\BackgroundJobs\VerifyUserData',
[
'verificationCode' => $argument['verificationCode'],
'data' => $argument['data'],
'type' => $argument['type'],
'uid' => $argument['uid'],
'try' => (int)$argument['try'] + 1,
'lastRun' => time()
]
);
}
/**
* test if it is time for the next run
*
* @param array $argument
* @return bool
*/
protected function shouldRun(array $argument) {
$lastRun = (int)$argument['lastRun'];
return ((time() - $lastRun) > $this->interval);
}
/**
* reset verification state after max tries are reached
*/
protected function resetVerificationState() {
$user = $this->userManager->get($this->argument['uid']);
if ($user !== null) {
$accountData = $this->accountManager->getUser($user);
$accountData[$this->argument['type']]['verified'] = AccountManager::NOT_VERIFIED;
$this->accountManager->updateUser($user, $accountData);
}
}
}