prevent users from deleting their own session token

settings/Controller/AuthSettingsController.php

@@ -81,7 +81,28 @@ class AuthSettingsController extends Controller {
 		if (is_null($user)) {
 			return [];
 		}
-		return $this->tokenProvider->getTokenByUser($user);
+		$tokens = $this->tokenProvider->getTokenByUser($user);
+		
+		try {
+			$sessionId = $this->session->getId();
+		} catch (SessionNotAvailableException $ex) {
+			return $this->getServiceNotAvailableResponse();
+		}
+		try {
+			$sessionToken = $this->tokenProvider->getToken($sessionId);
+		} catch (InvalidTokenException $ex) {
+			return $this->getServiceNotAvailableResponse();
+		}
+
+		return array_map(function(IToken $token) use ($sessionToken) {
+			$data = $token->jsonSerialize();
+			if ($sessionToken->getId() === $token->getId()) {
+				$data['canDelete'] = false;
+			} else {
+				$data['canDelete'] = true;
+			}
+			return $data;
+		}, $tokens);
 	}
 
 	/**
@@ -94,9 +115,7 @@ class AuthSettingsController extends Controller {
 		try {
 			$sessionId = $this->session->getId();
 		} catch (SessionNotAvailableException $ex) {
-			$resp = new JSONResponse();
+			return $this->getServiceNotAvailableResponse();
-			$resp->setStatus(Http::STATUS_SERVICE_UNAVAILABLE);
-			return $resp;
 		}
 
 		try {
@@ -108,9 +127,7 @@ class AuthSettingsController extends Controller {
 				$password = null;
 			}
 		} catch (InvalidTokenException $ex) {
-			$resp = new JSONResponse();
+			return $this->getServiceNotAvailableResponse();
-			$resp->setStatus(Http::STATUS_SERVICE_UNAVAILABLE);
-			return $resp;
 		}
 
 		$token = $this->generateRandomDeviceToken();
@@ -123,6 +140,12 @@ class AuthSettingsController extends Controller {
 		];
 	}
 
+	private function getServiceNotAvailableResponse() {
+		$resp = new JSONResponse();
+		$resp->setStatus(Http::STATUS_SERVICE_UNAVAILABLE);
+		return $resp;
+	}
+
 	/**
 	 * Return a 20 digit device password
 	 *

settings/js/authtoken_view.js

@@ -29,7 +29,11 @@
 		'<tr data-id="{{id}}">'
 		+ '<td class="has-tooltip" title="{{name}}"><span class="token-name">{{name}}</span></td>'
 		+ '<td><span class="last-activity has-tooltip" title="{{lastActivityTime}}">{{lastActivity}}</span></td>'
+		+ '{{#if canDelete}}'
 		+ '<td><a class="icon-delete has-tooltip" title="' + t('core', 'Disconnect') + '"></a></td>'
+		+ '{{else}}'
+		+ '<td></td>'
+		+ '{{/if}}'
 		+ '<tr>';
 
 	var SubView = OC.Backbone.View.extend({

tests/Settings/Controller/AuthSettingsControllerTest.php

@@ -24,6 +24,7 @@ namespace Test\Settings\Controller;
 
 use OC\AppFramework\Http;
 use OC\Authentication\Exceptions\InvalidTokenException;
+use OC\Authentication\Token\DefaultToken;
 use OC\Authentication\Token\IToken;
 use OC\Settings\Controller\AuthSettingsController;
 use OCP\AppFramework\Http\JSONResponse;
@@ -56,10 +57,17 @@ class AuthSettingsControllerTest extends TestCase {
 	}
 
 	public function testIndex() {
-		$result = [
+		$token1 = new DefaultToken();
-			'token1',
+		$token1->setId(100);
-			'token2',
+		$token2 = new DefaultToken();
+		$token2->setId(200);
+		$tokens = [
+			$token1,
+			$token2,
 		];
+		$sessionToken = new DefaultToken();
+		$sessionToken->setId(100);
+
 		$this->userManager->expects($this->once())
 			->method('get')
 			->with($this->uid)
@@ -67,9 +75,31 @@ class AuthSettingsControllerTest extends TestCase {
 		$this->tokenProvider->expects($this->once())
 			->method('getTokenByUser')
 			->with($this->user)
-			->will($this->returnValue($result));
+			->will($this->returnValue($tokens));
+		$this->session->expects($this->once())
+			->method('getId')
+			->will($this->returnValue('session123'));
+		$this->tokenProvider->expects($this->once())
+			->method('getToken')
+			->with('session123')
+			->will($this->returnValue($sessionToken));
 
-		$this->assertEquals($result, $this->controller->index());
+		$this->assertEquals([
+			[
+				'id' => 100,
+				'name' => null,
+				'lastActivity' => null,
+				'type' => null,
+				'canDelete' => false,
+			],
+			[
+				'id' => 200,
+				'name' => null,
+				'lastActivity' => null,
+				'type' => null,
+				'canDelete' => true,
+			]
+		], $this->controller->index());
 	}
 
 	public function testCreate() {
@@ -107,6 +137,7 @@ class AuthSettingsControllerTest extends TestCase {
 		$expected = [
 			'token' => $newToken,
 			'deviceToken' => $deviceToken,
+			'loginName' => 'User13',
 		];
 		$this->assertEquals($expected, $this->controller->create($name));
 	}