From af00399893a857ad40eb376dfae532d96b9ec879 Mon Sep 17 00:00:00 2001 From: Jonas Meurer Date: Thu, 8 Jul 2021 18:26:27 +0200 Subject: [PATCH] Respect user enumeration settings in user status lists So far, the functions to find user statuses listed didn't respect user enumeration settings (`shareapi_allow_share_dialog_user_enumeration` and `shareapi_restrict_user_enumeration_to_group` core app settings). Fix this privacy issue by returning an empty list in case `shareapi_allow_share_dialog_user_enumeration` is unset or `shareapi_restrict_user_enumeration_to_group` is set. In the long run, we might want to return users from common groups if `shareapi_restrict_user_enumeration_to_group` is set. It's complicated to implement this in a way that scales, though. See the discussion at https://github.com/nextcloud/server/pull/27879#pullrequestreview-753655308 for details. Also, don't register the user_status dashboard widget at all if `shareapi_allow_share_dialog_user_enumeration` is unset or `shareapi_restrict_user_enumeration_to_group` is set. Fixes: #27122 Signed-off-by: Jonas Meurer --- apps/user_status/lib/AppInfo/Application.php | 12 +++- .../user_status/lib/Service/StatusService.php | 37 ++++++++++-- .../tests/Unit/Service/StatusServiceTest.php | 59 ++++++++++++++++++- 3 files changed, 101 insertions(+), 7 deletions(-) diff --git a/apps/user_status/lib/AppInfo/Application.php b/apps/user_status/lib/AppInfo/Application.php index 8ccf0f497c33f..7a47fc45c95ce 100644 --- a/apps/user_status/lib/AppInfo/Application.php +++ b/apps/user_status/lib/AppInfo/Application.php @@ -36,6 +36,7 @@ use OCP\AppFramework\Bootstrap\IBootstrap; use OCP\AppFramework\Bootstrap\IRegistrationContext; use OCP\AppFramework\Http\Events\BeforeTemplateRenderedEvent; +use OCP\IConfig; use OCP\User\Events\UserDeletedEvent; use OCP\User\Events\UserLiveStatusEvent; use OCP\UserStatus\IManager; @@ -71,8 +72,15 @@ public function register(IRegistrationContext $context): void { $context->registerEventListener(UserLiveStatusEvent::class, UserLiveStatusListener::class); $context->registerEventListener(BeforeTemplateRenderedEvent::class, BeforeTemplateRenderedListener::class); - // Register the Dashboard panel - $context->registerDashboardWidget(UserStatusWidget::class); + $config = $this->getContainer()->query(IConfig::class); + $shareeEnumeration = $config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes'; + $shareeEnumerationInGroupOnly = $shareeEnumeration && $config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes'; + $shareeEnumerationPhone = $shareeEnumeration && $config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no') === 'yes'; + + // Register the Dashboard panel if user enumeration is enabled and not limited + if ($shareeEnumeration && !$shareeEnumerationInGroupOnly && !$shareeEnumerationPhone) { + $context->registerDashboardWidget(UserStatusWidget::class); + } } public function boot(IBootContext $context): void { diff --git a/apps/user_status/lib/Service/StatusService.php b/apps/user_status/lib/Service/StatusService.php index f121089ad8e00..2efdba0eb5652 100644 --- a/apps/user_status/lib/Service/StatusService.php +++ b/apps/user_status/lib/Service/StatusService.php @@ -35,6 +35,7 @@ use OCA\UserStatus\Exception\StatusMessageTooLongException; use OCP\AppFramework\Db\DoesNotExistException; use OCP\AppFramework\Utility\ITimeFactory; +use OCP\IConfig; use OCP\UserStatus\IUserStatus; /** @@ -56,6 +57,15 @@ class StatusService { /** @var EmojiService */ private $emojiService; + /** @var bool */ + private $shareeEnumeration; + + /** @var bool */ + private $shareeEnumerationInGroupOnly; + + /** @var bool */ + private $shareeEnumerationPhone; + /** * List of priorities ordered by their priority */ @@ -88,17 +98,22 @@ class StatusService { * * @param UserStatusMapper $mapper * @param ITimeFactory $timeFactory - * @param PredefinedStatusService $defaultStatusService, + * @param PredefinedStatusService $defaultStatusService * @param EmojiService $emojiService + * @param IConfig $config */ public function __construct(UserStatusMapper $mapper, ITimeFactory $timeFactory, PredefinedStatusService $defaultStatusService, - EmojiService $emojiService) { + EmojiService $emojiService, + IConfig $config) { $this->mapper = $mapper; $this->timeFactory = $timeFactory; $this->predefinedStatusService = $defaultStatusService; $this->emojiService = $emojiService; + $this->shareeEnumeration = $config->getAppValue('core', 'shareapi_allow_share_dialog_user_enumeration', 'yes') === 'yes'; + $this->shareeEnumerationInGroupOnly = $this->shareeEnumeration && $config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_group', 'no') === 'yes'; + $this->shareeEnumerationPhone = $this->shareeEnumeration && $config->getAppValue('core', 'shareapi_restrict_user_enumeration_to_phone', 'no') === 'yes'; } /** @@ -107,6 +122,13 @@ public function __construct(UserStatusMapper $mapper, * @return UserStatus[] */ public function findAll(?int $limit = null, ?int $offset = null): array { + // Return empty array if user enumeration is disabled or limited to groups + // TODO: find a solution that scales to get only users from common groups if user enumeration is limited to + // groups. See discussion at https://github.com/nextcloud/server/pull/27879#discussion_r729715936 + if (!$this->shareeEnumeration || $this->shareeEnumerationInGroupOnly || $this->shareeEnumerationPhone) { + return []; + } + return array_map(function ($status) { return $this->processStatus($status); }, $this->mapper->findAll($limit, $offset)); @@ -118,6 +140,13 @@ public function findAll(?int $limit = null, ?int $offset = null): array { * @return array */ public function findAllRecentStatusChanges(?int $limit = null, ?int $offset = null): array { + // Return empty array if user enumeration is disabled or limited to groups + // TODO: find a solution that scales to get only users from common groups if user enumeration is limited to + // groups. See discussion at https://github.com/nextcloud/server/pull/27879#discussion_r729715936 + if (!$this->shareeEnumeration || $this->shareeEnumerationInGroupOnly || $this->shareeEnumerationPhone) { + return []; + } + return array_map(function ($status) { return $this->processStatus($status); }, $this->mapper->findAllRecent($limit, $offset)); @@ -225,7 +254,7 @@ public function setPredefinedMessage(string $userId, /** * @param string $userId * @param string|null $statusIcon - * @param string|null $message + * @param string $message * @param int|null $clearAt * @return UserStatus * @throws InvalidClearAtException @@ -333,7 +362,7 @@ public function removeUserStatus(string $userId): bool { * up to date and provides translated default status if needed * * @param UserStatus $status - * @returns UserStatus + * @return UserStatus */ private function processStatus(UserStatus $status): UserStatus { $clearAt = $status->getClearAt(); diff --git a/apps/user_status/tests/Unit/Service/StatusServiceTest.php b/apps/user_status/tests/Unit/Service/StatusServiceTest.php index b4215778a990c..7141c809b3198 100644 --- a/apps/user_status/tests/Unit/Service/StatusServiceTest.php +++ b/apps/user_status/tests/Unit/Service/StatusServiceTest.php @@ -38,6 +38,7 @@ use OCA\UserStatus\Service\StatusService; use OCP\AppFramework\Db\DoesNotExistException; use OCP\AppFramework\Utility\ITimeFactory; +use OCP\IConfig; use OCP\UserStatus\IUserStatus; use Test\TestCase; @@ -55,6 +56,9 @@ class StatusServiceTest extends TestCase { /** @var EmojiService|\PHPUnit\Framework\MockObject\MockObject */ private $emojiService; + /** @var IConfig|\PHPUnit\Framework\MockObject\MockObject */ + private $config; + /** @var StatusService */ private $service; @@ -65,10 +69,20 @@ protected function setUp(): void { $this->timeFactory = $this->createMock(ITimeFactory::class); $this->predefinedStatusService = $this->createMock(PredefinedStatusService::class); $this->emojiService = $this->createMock(EmojiService::class); + + $this->config = $this->createMock(IConfig::class); + + $this->config->method('getAppValue') + ->willReturnMap([ + ['core', 'shareapi_allow_share_dialog_user_enumeration', 'yes', 'yes'], + ['core', 'shareapi_restrict_user_enumeration_to_group', 'no', 'no'] + ]); + $this->service = new StatusService($this->mapper, $this->timeFactory, $this->predefinedStatusService, - $this->emojiService); + $this->emojiService, + $this->config); } public function testFindAll(): void { @@ -101,6 +115,49 @@ public function testFindAllRecentStatusChanges(): void { ], $this->service->findAllRecentStatusChanges(20, 50)); } + public function testFindAllRecentStatusChangesNoEnumeration(): void { + $status1 = $this->createMock(UserStatus::class); + $status2 = $this->createMock(UserStatus::class); + + $this->mapper->method('findAllRecent') + ->with(20, 50) + ->willReturn([$status1, $status2]); + + // Rebuild $this->service with user enumeration turned off + $this->config = $this->createMock(IConfig::class); + + $this->config->method('getAppValue') + ->willReturnMap([ + ['core', 'shareapi_allow_share_dialog_user_enumeration', 'yes', 'no'], + ['core', 'shareapi_restrict_user_enumeration_to_group', 'no', 'no'] + ]); + + $this->service = new StatusService($this->mapper, + $this->timeFactory, + $this->predefinedStatusService, + $this->emojiService, + $this->config); + + $this->assertEquals([], $this->service->findAllRecentStatusChanges(20, 50)); + + // Rebuild $this->service with user enumeration limited to common groups + $this->config = $this->createMock(IConfig::class); + + $this->config->method('getAppValue') + ->willReturnMap([ + ['core', 'shareapi_allow_share_dialog_user_enumeration', 'yes', 'yes'], + ['core', 'shareapi_restrict_user_enumeration_to_group', 'no', 'yes'] + ]); + + $this->service = new StatusService($this->mapper, + $this->timeFactory, + $this->predefinedStatusService, + $this->emojiService, + $this->config); + + $this->assertEquals([], $this->service->findAllRecentStatusChanges(20, 50)); + } + public function testFindByUserId(): void { $status = $this->createMock(UserStatus::class); $this->mapper->expects($this->once())