use login hook credentials as fallback

If no session token is available, we can use the credentials provided
by the login hook.

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

apps/files_external/lib/Lib/Auth/Password/SessionCredentials.php

@@ -32,27 +32,17 @@ use OCP\Authentication\Exceptions\CredentialsUnavailableException;
 use OCP\Authentication\LoginCredentials\IStore as CredentialsStore;
 use OCP\Files\Storage;
 use OCP\IL10N;
-use OCP\ISession;
 use OCP\IUser;
-use OCP\Security\ICrypto;
 
 /**
  * Username and password from login credentials, saved in session
  */
 class SessionCredentials extends AuthMechanism {
 
-	/** @var ISession */
-	protected $session;
-
-	/** @var ICrypto */
-	protected $crypto;
-
 	/** @var CredentialsStore */
 	private $credentialsStore;
 
-	public function __construct(IL10N $l, ISession $session, ICrypto $crypto, CredentialsStore $credentialsStore) {
-		$this->session = $session;
-		$this->crypto = $crypto;
+	public function __construct(IL10N $l, CredentialsStore $credentialsStore) {
 		$this->credentialsStore = $credentialsStore;
 
 		$this->setIdentifier('password::sessioncredentials')

lib/private/Authentication/LoginCredentials/Store.php

@@ -33,6 +33,7 @@ use OCP\Authentication\LoginCredentials\IStore;
 use OCP\ILogger;
 use OCP\ISession;
 use OCP\Session\Exceptions\SessionNotAvailableException;
+use OCP\Util;
 
 class Store implements IStore {
 
@@ -54,6 +55,17 @@ class Store implements IStore {
 		$this->session = $session;
 		$this->tokenProvider = $tokenProvider;
 		$this->logger = $logger;
+
+		Util::connectHook('OC_User', 'post_login', $this, 'authenticate');
+	}
+
+	/**
+	 * Hook listener on post login
+	 *
+	 * @param array $params
+	 */
+	public function authenticate(array $params) {
+		$this->session->set('login_credentials', json_encode($params));
 	}
 
 	/**
@@ -72,6 +84,7 @@ class Store implements IStore {
 	 * @throws CredentialsUnavailableException
 	 */
 	public function getLoginCredentials() {
+		$trySession = false;
 		try {
 			$sessionId = $this->session->getId();
 			$token = $this->tokenProvider->getToken($sessionId);
@@ -85,9 +98,17 @@ class Store implements IStore {
 			$this->logger->debug('could not get login credentials because session is unavailable', ['app' => 'core']);
 		} catch (InvalidTokenException $ex) {
 			$this->logger->debug('could not get login credentials because the token is invalid', ['app' => 'core']);
+			$trySession = true;
 		} catch (PasswordlessTokenException $ex) {
 			$this->logger->debug('could not get login credentials because the token has no password', ['app' => 'core']);
+			$trySession = true;
 		}
+
+		if ($trySession && $this->session->exists('login_credentials')) {
+			$creds = json_decode($this->session->get('login_credentials'));
+			return new Credentials($creds->uid, $creds->uid, $creds->password);
+		}
+
 		// If we reach this line, an exception was thrown.
 		throw new CredentialsUnavailableException();
 	}

tests/lib/Authentication/LoginCredentials/StoreTest.php

@@ -34,6 +34,7 @@ use OCP\Authentication\Exceptions\CredentialsUnavailableException;
 use OCP\ILogger;
 use OCP\ISession;
 use OCP\Session\Exceptions\SessionNotAvailableException;
+use PHPUnit_Framework_MockObject_MockObject;
 use Test\TestCase;
 
 class StoreTest extends TestCase {
@@ -60,6 +61,26 @@ class StoreTest extends TestCase {
 		$this->store = new Store($this->session, $this->tokenProvider, $this->logger);
 	}
 
+	public function testAuthenticate() {
+		$params = [
+			'run' => true,
+			'uid' => 'user123',
+			'password' => 123456,
+		];
+
+		$this->session->expects($this->once())
+			->method('set')
+			->with($this->equalTo('login_credentials'), $this->equalTo(json_encode($params)));
+
+		$this->store->authenticate($params);
+	}
+
+	public function testSetSession() {
+		$session = $this->createMock(ISession::class);
+
+		$this->store->setSession($session);
+	}
+
 	public function testGetLoginCredentials() {
 		$uid = 'uid';
 		$user = 'user123';
@@ -67,21 +88,21 @@ class StoreTest extends TestCase {
 		$token = $this->createMock(IToken::class);
 		$this->session->expects($this->once())
 			->method('getId')
-			->will($this->returnValue('sess2233'));
+			->willReturn('sess2233');
 		$this->tokenProvider->expects($this->once())
 			->method('getToken')
 			->with('sess2233')
-			->will($this->returnValue($token));
+			->willReturn($token);
 		$token->expects($this->once())
 			->method('getUID')
-			->will($this->returnValue($uid));
+			->willReturn($uid);
 		$token->expects($this->once())
 			->method('getLoginName')
-			->will($this->returnValue($user));
+			->willReturn($user);
 		$this->tokenProvider->expects($this->once())
 			->method('getPassword')
 			->with($token, 'sess2233')
-			->will($this->returnValue($password));
+			->willReturn($password);
 		$expected = new Credentials($uid, $user, $password);
 
 		$creds = $this->store->getLoginCredentials();
@@ -101,7 +122,7 @@ class StoreTest extends TestCase {
 	public function testGetLoginCredentialsInvalidToken() {
 		$this->session->expects($this->once())
 			->method('getId')
-			->will($this->returnValue('sess2233'));
+			->willReturn('sess2233');
 		$this->tokenProvider->expects($this->once())
 			->method('getToken')
 			->with('sess2233')
@@ -110,11 +131,37 @@ class StoreTest extends TestCase {
 
 		$this->store->getLoginCredentials();
 	}
-	
+
+	public function testGetLoginCredentialsInvalidTokenLoginCredentials() {
+		$uid = 'user987';
+		$password = '7389374';
+
+		$this->session->expects($this->once())
+			->method('getId')
+			->willReturn('sess2233');
+		$this->tokenProvider->expects($this->once())
+			->method('getToken')
+			->with('sess2233')
+			->will($this->throwException(new InvalidTokenException()));
+		$this->session->expects($this->once())
+			->method('exists')
+			->with($this->equalTo('login_credentials'))
+			->willReturn(true);
+		$this->session->expects($this->once())
+			->method('get')
+			->with($this->equalTo('login_credentials'))
+			->willReturn('{"run":true,"uid":"user987","password":"7389374"}');
+		$expected = new Credentials('user987', 'user987', '7389374');
+
+		$actual = $this->store->getLoginCredentials();
+
+		$this->assertEquals($expected, $actual);
+	}
+
 	public function testGetLoginCredentialsPasswordlessToken() {
 		$this->session->expects($this->once())
 			->method('getId')
-			->will($this->returnValue('sess2233'));
+			->willReturn('sess2233');
 		$this->tokenProvider->expects($this->once())
 			->method('getToken')
 			->with('sess2233')