Parse key backup auth cookies without requiring spaces

src/app/api/auth/key-backup/route.js

@@ -41,7 +41,7 @@ async function authenticateUser(request) {
 		}
 
 		const cookies = Object.fromEntries(
-			cookieHeader.split('; ').map(cookie => {
+			cookieHeader.split(/;\s*/).map(cookie => {
 				const [name, value] = cookie.split('=');
 				return [name, decodeURIComponent(value)];
 			})

src/app/api/auth/key-backup/route.test.js

@@ -0,0 +1,82 @@
+import { beforeEach, describe, expect, it, vi } from 'vitest';
+
+const mocks = vi.hoisted(() => ({
+	authGetUser: vi.fn(),
+	serviceFrom: vi.fn()
+}));
+
+vi.mock('@supabase/supabase-js', () => ({
+	createClient: vi.fn(() => ({
+		auth: {
+			getUser: mocks.authGetUser
+		}
+	}))
+}));
+
+vi.mock('@/lib/supabase/service-role.js', () => ({
+	createServiceRoleClient: vi.fn(() => ({
+		from: mocks.serviceFrom
+	}))
+}));
+
+function cookieValue(token) {
+	return `base64-${Buffer.from(JSON.stringify({ access_token: token })).toString('base64')}`;
+}
+
+function createBackupQuery() {
+	const query = {
+		select: vi.fn(() => query),
+		eq: vi.fn(() => query),
+		single: vi.fn(() =>
+			Promise.resolve({
+				data: {
+					encrypted_keys: '{"version":1}',
+					created_at: '2026-07-11T00:00:00.000Z',
+					updated_at: '2026-07-11T00:00:00.000Z'
+				},
+				error: null
+			})
+		)
+	};
+	return query;
+}
+
+describe('key backup cookie authentication', () => {
+	beforeEach(() => {
+		vi.resetModules();
+		vi.clearAllMocks();
+		process.env.NEXT_PUBLIC_SUPABASE_URL = 'https://example.supabase.co';
+		process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY = 'anon-key';
+
+		mocks.authGetUser.mockResolvedValue({
+			data: { user: { id: 'auth-user-id' } },
+			error: null
+		});
+		mocks.serviceFrom.mockImplementation((table) => {
+			if (table === 'key_backups') return createBackupQuery();
+			throw new Error(`Unexpected table: ${table}`);
+		});
+	});
+
+	it('accepts valid cookie headers without a space after semicolons', async () => {
+		const { GET } = await import('./route.js');
+		const response = await GET(
+			new Request('https://qrypt.chat/api/auth/key-backup', {
+				headers: {
+					cookie: `sb-xydzwxwsbgmznthiiscl-auth-token=${cookieValue('access-token')};session=ignored`
+				}
+			})
+		);
+		const body = await response.json();
+
+		expect(response.status).toBe(200);
+		expect(body).toEqual({
+			backup: {
+				encrypted_keys: '{"version":1}',
+				created_at: '2026-07-11T00:00:00.000Z',
+				updated_at: '2026-07-11T00:00:00.000Z'
+			}
+		});
+		expect(mocks.authGetUser).toHaveBeenCalledWith('access-token');
+	});
+});