check verification proof and update account table

Signed-off-by: Bjoern Schiessle <bjoern@schiessle.org>

3 files changed, 433 insertions, 10 deletions

diff --git a/settings/BackgroundJobs/VerifyUserData.php b/settings/BackgroundJobs/VerifyUserData.php
new file mode 100644
index 00000000000..f19f622c97a
--- /dev/null
+++ b/settings/BackgroundJobs/VerifyUserData.php
@@ -0,0 +1,275 @@
+<?php
+/**
+ * @copyright Copyright (c) 2017 Bjoern Schiessle <bjoern@schiessle.org>
+ *
+ * @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\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|null $accountManager
+	 * @param IUserManager|null $userManager
+	 * @param IClientService|null $clientService
+	 * @param IConfig|null $config
+	 */
+	public function __construct(AccountManager $accountManager = null,
+								IUserManager $userManager = null,
+								IClientService $clientService = null,
+								ILogger $logger = null,
+								IConfig $config = null
+	) {
+		$this->accountManager = $accountManager !== null ? $accountManager : \OC::$server->query(AccountManager::class);
+		$this->userManager = $userManager !== null ? $userManager : \OC::$server->getUserManager();
+		$this->httpClientService = $clientService !== null ? $clientService : \OC::$server->getHTTPClientService();
+		$this->logger = $logger !== null ? $logger : \OC::$server->getLogger();
+
+		if ($config !== null) {
+			$this->lookupServerUrl = $config->getSystemValue('lookup_server', 'https://lookup.nextcloud.com');
+		} else {
+			$this->lookupServerUrl = \OC::$server->getConfig()->getSystemValue('lookup_server', 'https://lookup.nextcloud.com');
+		}
+	}
+
+	/**
+	 * run the job, then remove it from the jobList
+	 *
+	 * @param JobList $jobList
+	 * @param ILogger $logger
+	 */
+	public function execute($jobList, ILogger $logger = null) {
+
+		if ($this->shouldRun($this->argument)) {
+			parent::execute($jobList, $logger);
+			$jobList->remove($this, $this->argument);
+			if ($this->retainJob) {
+				$this->reAddJob($jobList, $this->argument);
+			}
+		}
+
+	}
+
+	protected function run($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'], '/') . '/' . '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();
+			$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 ($publishedCode === $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::VERIFICATION_IN_PROGRESS) {
+			return false;
+		}
+
+		$localUserData[$dataType]['verified'] === $lookupServerData[$dataType]['verified'];
+		$this->accountManager->updateUser($user, $localUserData);
+
+		return true;
+	}
+
+	/**
+	 * @param string $cloudId
+	 * @return array
+	 */
+	protected function queryLookupServer($cloudId) {
+		try {
+			$client = $this->clientService->newClient();
+			$response = $client->get(
+				$this->lookupServerUrl . '/users?search=' . urlencode($cloudId),
+				[
+					'timeout' => 10,
+					'connect_timeout' => 3,
+				]
+			);
+
+			$body = json_decode($response->getBody(), true);
+
+			foreach ($body as $lookup) {
+				if ($lookup['federationId'] === $cloudId) {
+					return $lookup;
+				}
+			}
+
+		} 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);
+	}
+
+}
diff --git a/settings/Controller/UsersController.php b/settings/Controller/UsersController.php
index e80c4956bcb..41433ea8363 100644
--- a/settings/Controller/UsersController.php
+++ b/settings/Controller/UsersController.php
@@ -38,6 +38,8 @@ use OC\Security\IdentityProof\Manager;
 use OCP\App\IAppManager;
 use OCP\AppFramework\Controller;
 use OCP\AppFramework\Http\DataResponse;
+use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\BackgroundJob\IJobList;
 use OCP\IConfig;
 use OCP\IGroupManager;
 use OCP\IL10N;
@@ -49,6 +51,7 @@ use OCP\IUserManager;
 use OCP\IUserSession;
 use OCP\Mail\IMailer;
 use OCP\IAvatarManager;
+use OCP\Security\ICrypto;
 use OCP\Security\ISecureRandom;
 
 /**
@@ -89,7 +92,8 @@ class UsersController extends Controller {
 	private $crypto;
 	/** @var Manager */
 	private $keyManager;
-
+	/** @var IJobList */
+	private $jobList;
 
 	/**
 	 * @param string $appName
@@ -111,6 +115,7 @@ class UsersController extends Controller {
 	 * @param ITimeFactory $timeFactory
 	 * @param ICrypto $crypto
 	 * @param Manager $keyManager
+	 * @param IJobList $jobList
 	 */
 	public function __construct($appName,
 								IRequest $request,
@@ -130,7 +135,8 @@ class UsersController extends Controller {
 								NewUserMailHelper $newUserMailHelper,
 								ITimeFactory $timeFactory,
 								ICrypto $crypto,
-								Manager $keyManager) {
+								Manager $keyManager,
+								IJobList $jobList) {
 		parent::__construct($appName, $request);
 		$this->userManager = $userManager;
 		$this->groupManager = $groupManager;
@@ -147,6 +153,7 @@ class UsersController extends Controller {
 		$this->timeFactory = $timeFactory;
 		$this->crypto = $crypto;
 		$this->keyManager = $keyManager;
+		$this->jobList = $jobList;
 
 		// check for encryption state - TODO see formatUserForIndex
 		$this->isEncryptionAppEnabled = $appManager->isEnabledForUser('encryption');
@@ -524,22 +531,24 @@ class UsersController extends Controller {
 		$accountData = $this->accountManager->getUser($user);
 		$cloudId = $user->getCloudId();
 		$message = "Use my Federated Cloud ID to share with me: " . $cloudId;
-		$privateKey = $this->keyManager->getKey($user)->getPrivate();
-		openssl_sign(json_encode($message), $signature, $privateKey, OPENSSL_ALGO_SHA512);
-		$signatureBase64 = base64_encode($signature);
+		$signature = $this->signMessage($user, $message);
 
-		$code = $message . ' ' . $signatureBase64;
-		$codeMd5 = $message . ' ' . md5($signatureBase64);
+		$code = $message . ' ' . $signature;
+		$codeMd5 = $message . ' ' . md5($signature);
 
 		switch ($account) {
 			case 'verify-twitter':
 				$accountData[AccountManager::PROPERTY_TWITTER]['verified'] = AccountManager::VERIFICATION_IN_PROGRESS;
 				$msg = $this->l10n->t('In order to verify your Twitter account post following tweet on Twitter:');
 				$code = $codeMd5;
+				$type = AccountManager::PROPERTY_TWITTER;
+				$data = $accountData[AccountManager::PROPERTY_TWITTER]['value'];
 				break;
 			case 'verify-website':
 				$accountData[AccountManager::PROPERTY_WEBSITE]['verified'] = AccountManager::VERIFICATION_IN_PROGRESS;
-				$msg = $this->l10n->t('In order to verify your Website store following content in your webroot at \'CloudIdVerificationCode.txt\':');
+				$msg = $this->l10n->t('In order to verify your Website store following content in your web-root at \'CloudIdVerificationCode.txt\':');
+				$type = AccountManager::PROPERTY_WEBSITE;
+				$data = $accountData[AccountManager::PROPERTY_WEBSITE]['value'];
 				break;
 			default:
 				return new DataResponse([], Http::STATUS_BAD_REQUEST);
@@ -547,10 +556,47 @@ class UsersController extends Controller {
 
 		$this->accountManager->updateUser($user, $accountData);
 
+
+		$this->jobList->add('OC\Settings\BackgroundJobs\VerifyUserData',
+			[
+				'verificationCode' => $code,
+				'data' => $data,
+				'type' => $type,
+				'uid' => $user->getUID(),
+				'try' => 0,
+				'lastRun' => $this->getCurrentTime()
+			]
+		);
+
 		return new DataResponse(['msg' => $msg, 'code' => $code]);
 	}
 
 	/**
+	 * get current timestamp
+	 *
+	 * @return int
+	 */
+	protected function getCurrentTime() {
+		return time();
+	}
+
+	/**
+	 * sign message with users private key
+	 *
+	 * @param IUser $user
+	 * @param string $message
+	 *
+	 * @return string base64 encoded signature
+	 */
+	protected function signMessage(IUser $user, $message) {
+		$privateKey = $this->keyManager->getKey($user)->getPrivate();
+		openssl_sign(json_encode($message), $signature, $privateKey, OPENSSL_ALGO_SHA512);
+		$signatureBase64 = base64_encode($signature);
+
+		return $signatureBase64;
+	}
+
+	/**
 	 * @NoAdminRequired
 	 * @NoSubadminRequired
 	 * @PasswordConfirmationRequired
diff --git a/tests/Settings/Controller/UsersControllerTest.php b/tests/Settings/Controller/UsersControllerTest.php
index d659d812b0d..918f3ae694d 100644
--- a/tests/Settings/Controller/UsersControllerTest.php
+++ b/tests/Settings/Controller/UsersControllerTest.php
@@ -18,6 +18,7 @@ use OCP\App\IAppManager;
 use OCP\AppFramework\Http;
 use OCP\AppFramework\Http\DataResponse;
 use OCP\AppFramework\Utility\ITimeFactory;
+use OCP\BackgroundJob\IJobList;
 use OCP\IAvatar;
 use OCP\IAvatarManager;
 use OCP\IConfig;
@@ -74,6 +75,10 @@ class UsersControllerTest extends \Test\TestCase {
 	private $newUserMailHelper;
 	/** @var ICrypto | \PHPUnit_Framework_MockObject_MockObject */
 	private $crypto;
+	/** @var  IJobList | \PHPUnit_Framework_MockObject_MockObject */
+	private $jobList;
+	/** @var \OC\Security\IdentityProof\Manager |\PHPUnit_Framework_MockObject_MockObject  */
+	private $securityManager;
 
 	protected function setUp() {
 		parent::setUp();
@@ -92,6 +97,10 @@ class UsersControllerTest extends \Test\TestCase {
 		$this->timeFactory = $this->createMock(ITimeFactory::class);
 		$this->crypto = $this->createMock(ICrypto::class);
 		$this->newUserMailHelper = $this->createMock(NewUserMailHelper::class);
+		$this->timeFactory = $this->getMock(ITimeFactory::class);
+		$this->crypto = $this->getMock(ICrypto::class);
+		$this->securityManager = $this->getMockBuilder(\OC\Security\IdentityProof\Manager::class)->disableOriginalConstructor()->getMock();
+		$this->jobList = $this->createMock(IJobList::class);
 		$this->l = $this->createMock(IL10N::class);
 		$this->l->method('t')
 			->will($this->returnCallback(function ($text, $parameters = []) {
@@ -136,7 +145,12 @@ class UsersControllerTest extends \Test\TestCase {
 				$this->avatarManager,
 				$this->accountManager,
 				$this->secureRandom,
-				$this->newUserMailHelper
+				$this->newUserMailHelper,
+				$this->timeFactory,
+				$this->crypto,
+				$this->securityManager,
+				$this->jobList
+
 			);
 		} else {
 			return $this->getMockBuilder(UsersController::class)
@@ -157,7 +171,11 @@ class UsersControllerTest extends \Test\TestCase {
 						$this->avatarManager,
 						$this->accountManager,
 						$this->secureRandom,
-						$this->newUserMailHelper
+						$this->newUserMailHelper,
+						$this->timeFactory,
+						$this->crypto,
+						$this->securityManager,
+						$this->jobList
 					]
 				)->setMethods($mockedMethods)->getMock();
 		}
@@ -2267,4 +2285,88 @@ class UsersControllerTest extends \Test\TestCase {
 		$response = $controller->create('foo', '', array(), 'abc@example.org');
 		$this->assertEquals($expectedResponse, $response);
 	}
+
+	/**
+	 * @param string $account
+	 * @param string $type
+	 * @param array $dataBefore
+	 * @param array $expectedData
+	 *
+	 * @dataProvider dataTestGetVerificationCode
+	 */
+	public function testGetVerificationCode($account, $type, $dataBefore, $expectedData) {
+
+		$message = 'Use my Federated Cloud ID to share with me: user@nextcloud.com';
+		$signature = 'theSignature';
+
+		$code = $message . ' ' . $signature;
+		if($type === AccountManager::PROPERTY_TWITTER) {
+			$code = $message . ' ' . md5($signature);
+		}
+
+		$controller = $this->getController(false, ['signMessage', 'getCurrentTime']);
+
+		$user = $this->getMock(IUser::class);
+		$this->userSession->expects($this->once())->method('getUser')->willReturn($user);
+		$this->accountManager->expects($this->once())->method('getUser')->with($user)->willReturn($dataBefore);
+		$user->expects($this->any())->method('getCloudId')->willReturn('user@nextcloud.com');
+		$user->expects($this->any())->method('getUID')->willReturn('uid');
+		$controller->expects($this->once())->method('signMessage')->with($user, $message)->willReturn($signature);
+		$controller->expects($this->once())->method('getCurrentTime')->willReturn(1234567);
+
+		$this->accountManager->expects($this->once())->method('updateUser')->with($user, $expectedData);
+		$this->jobList->expects($this->once())->method('add')
+			->with('OC\Settings\BackgroundJobs\VerifyUserData',
+				[
+					'verificationCode' => $code,
+					'data' => $dataBefore[$type]['value'],
+					'type' => $type,
+					'uid' => 'uid',
+					'try' => 0,
+					'lastRun' => 1234567
+				]);
+
+
+		$result = $controller->getVerificationCode($account);
+
+		$data = $result->getData();
+		$this->assertSame(Http::STATUS_OK, $result->getStatus());
+		$this->assertSame($code, $data['code']);
+	}
+
+	public function dataTestGetVerificationCode() {
+
+		$accountDataBefore = [
+			AccountManager::PROPERTY_WEBSITE => ['value' => 'https://nextcloud.com', 'verified' => AccountManager::NOT_VERIFIED],
+			AccountManager::PROPERTY_TWITTER => ['value' => '@nextclouders', 'verified' => AccountManager::NOT_VERIFIED],
+		];
+
+		$accountDataAfterWebsite = [
+			AccountManager::PROPERTY_WEBSITE => ['value' => 'https://nextcloud.com', 'verified' => AccountManager::VERIFICATION_IN_PROGRESS],
+			AccountManager::PROPERTY_TWITTER => ['value' => '@nextclouders', 'verified' => AccountManager::NOT_VERIFIED],
+		];
+
+		$accountDataAfterTwitter = [
+			AccountManager::PROPERTY_WEBSITE => ['value' => 'https://nextcloud.com', 'verified' => AccountManager::NOT_VERIFIED],
+			AccountManager::PROPERTY_TWITTER => ['value' => '@nextclouders', 'verified' => AccountManager::VERIFICATION_IN_PROGRESS],
+		];
+
+		return [
+			['verify-twitter', AccountManager::PROPERTY_TWITTER, $accountDataBefore, $accountDataAfterTwitter],
+			['verify-website', AccountManager::PROPERTY_WEBSITE, $accountDataBefore, $accountDataAfterWebsite],
+		];
+	}
+
+	/**
+	 * test get verification code in case no valid user was given
+	 */
+	public function testGetVerificationCodeInvalidUser() {
+
+		$controller = $this->getController();
+		$this->userSession->expects($this->once())->method('getUser')->willReturn(null);
+		$result = $controller->getVerificationCode('account');
+
+		$this->assertSame(Http::STATUS_BAD_REQUEST ,$result->getStatus());
+
+	}
 }