1 files changed, 188 insertions, 0 deletions
diff --git a/apps/dav/tests/unit/CalDAV/Security/RateLimitingPluginTest.php b/apps/dav/tests/unit/CalDAV/Security/RateLimitingPluginTest.php
new file mode 100644
index 00000000000..a5cf6a23c66
--- /dev/null
+++ b/apps/dav/tests/unit/CalDAV/Security/RateLimitingPluginTest.php
@@ -0,0 +1,188 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\DAV\Tests\unit\CalDAV\Security;
+
+use OC\Security\RateLimiting\Exception\RateLimitExceededException;
+use OC\Security\RateLimiting\Limiter;
+use OCA\DAV\CalDAV\CalDavBackend;
+use OCA\DAV\CalDAV\Security\RateLimitingPlugin;
+use OCA\DAV\Connector\Sabre\Exception\TooManyRequests;
+use OCP\IAppConfig;
+use OCP\IUser;
+use OCP\IUserManager;
+use PHPUnit\Framework\MockObject\MockObject;
+use Psr\Log\LoggerInterface;
+use Sabre\DAV\Exception\Forbidden;
+use Test\TestCase;
+
+class RateLimitingPluginTest extends TestCase {
+
+	private Limiter&MockObject $limiter;
+	private CalDavBackend&MockObject $caldavBackend;
+	private IUserManager&MockObject $userManager;
+	private LoggerInterface&MockObject $logger;
+	private IAppConfig&MockObject $config;
+	private string $userId = 'user123';
+	private RateLimitingPlugin $plugin;
+
+	protected function setUp(): void {
+		parent::setUp();
+
+		$this->limiter = $this->createMock(Limiter::class);
+		$this->userManager = $this->createMock(IUserManager::class);
+		$this->caldavBackend = $this->createMock(CalDavBackend::class);
+		$this->logger = $this->createMock(LoggerInterface::class);
+		$this->config = $this->createMock(IAppConfig::class);
+		$this->plugin = new RateLimitingPlugin(
+			$this->limiter,
+			$this->userManager,
+			$this->caldavBackend,
+			$this->logger,
+			$this->config,
+			$this->userId,
+		);
+	}
+
+	public function testNoUserObject(): void {
+		$this->limiter->expects(self::never())
+			->method('registerUserRequest');
+
+		$this->plugin->beforeBind('calendars/foo/cal');
+	}
+
+	public function testUnrelated(): void {
+		$user = $this->createMock(IUser::class);
+		$this->userManager->expects(self::once())
+			->method('get')
+			->with($this->userId)
+			->willReturn($user);
+		$this->limiter->expects(self::never())
+			->method('registerUserRequest');
+
+		$this->plugin->beforeBind('foo/bar');
+	}
+
+	public function testRegisterCalendarCreation(): void {
+		$user = $this->createMock(IUser::class);
+		$this->userManager->expects(self::once())
+			->method('get')
+			->with($this->userId)
+			->willReturn($user);
+		$this->config
+			->method('getValueInt')
+			->with('dav')
+			->willReturnArgument(2);
+		$this->limiter->expects(self::once())
+			->method('registerUserRequest')
+			->with(
+				'caldav-create-calendar',
+				10,
+				3600,
+				$user,
+			);
+
+		$this->plugin->beforeBind('calendars/foo/cal');
+	}
+
+	public function testCalendarCreationRateLimitExceeded(): void {
+		$user = $this->createMock(IUser::class);
+		$this->userManager->expects(self::once())
+			->method('get')
+			->with($this->userId)
+			->willReturn($user);
+		$this->config
+			->method('getValueInt')
+			->with('dav')
+			->willReturnArgument(2);
+		$this->limiter->expects(self::once())
+			->method('registerUserRequest')
+			->with(
+				'caldav-create-calendar',
+				10,
+				3600,
+				$user,
+			)
+			->willThrowException(new RateLimitExceededException());
+		$this->expectException(TooManyRequests::class);
+
+		$this->plugin->beforeBind('calendars/foo/cal');
+	}
+
+	public function testCalendarLimitReached(): void {
+		$user = $this->createMock(IUser::class);
+		$this->userManager->expects(self::once())
+			->method('get')
+			->with($this->userId)
+			->willReturn($user);
+		$user->method('getUID')->willReturn('user123');
+		$this->config
+			->method('getValueInt')
+			->with('dav')
+			->willReturnArgument(2);
+		$this->limiter->expects(self::once())
+			->method('registerUserRequest')
+			->with(
+				'caldav-create-calendar',
+				10,
+				3600,
+				$user,
+			);
+		$this->caldavBackend->expects(self::once())
+			->method('getCalendarsForUserCount')
+			->with('principals/users/user123')
+			->willReturn(27);
+		$this->caldavBackend->expects(self::once())
+			->method('getSubscriptionsForUserCount')
+			->with('principals/users/user123')
+			->willReturn(3);
+		$this->expectException(Forbidden::class);
+
+		$this->plugin->beforeBind('calendars/foo/cal');
+	}
+
+	public function testNoCalendarsSubscriptsLimit(): void {
+		$user = $this->createMock(IUser::class);
+		$this->userManager->expects(self::once())
+			->method('get')
+			->with($this->userId)
+			->willReturn($user);
+		$user->method('getUID')->willReturn('user123');
+		$this->config
+			->method('getValueInt')
+			->with('dav')
+			->willReturnCallback(function ($app, $key, $default) {
+				switch ($key) {
+					case 'maximumCalendarsSubscriptions':
+						return -1;
+					default:
+						return $default;
+				}
+			});
+		$this->limiter->expects(self::once())
+			->method('registerUserRequest')
+			->with(
+				'caldav-create-calendar',
+				10,
+				3600,
+				$user,
+			);
+		$this->caldavBackend->expects(self::never())
+			->method('getCalendarsForUserCount')
+			->with('principals/users/user123')
+			->willReturn(27);
+		$this->caldavBackend->expects(self::never())
+			->method('getSubscriptionsForUserCount')
+			->with('principals/users/user123')
+			->willReturn(3);
+
+		$this->plugin->beforeBind('calendars/foo/cal');
+	}
+
+}