WIP: auth: refactor to page routes instead of api routes

README.md

@@ -27,3 +27,14 @@ bun install
 bun run prepare
 bun run dev
 ```
+
+## To Do
+
+- [ ] Proper invite page
+- [ ] Proper error page for login without invite
+- [ ] Support file provider (for wg-quick)
+- [ ] Fix accessibility issues (lighthouse)
+- [ ] Add title to profile page (lighthouse)
+- [ ] wg-quick scripts (maybe?)
+- [ ] Get rid of api routes (maybe?)
+- [ ] Get rid of custom result types (maybe?)

src/lib/components/app/auth-form/auth-form.svelte

@@ -4,21 +4,21 @@
 	import { cn } from '$lib/utils.js';
 	import googleIcon from '$lib/assets/google.svg';
 
-	let { inviteToken, class: className, ...rest }: { inviteToken?: string; class?: string; rest?: { [p: string]: unknown } } = $props();
+	let { inviteToken, class: className, ...rest }: {
+		inviteToken?: string;
+		class?: string;
+		rest?: { [p: string]: unknown }
+	} = $props();
 
-	let isLoading = $state(false);
+	let submitted = $state(false);
 </script>
 
 <div class={cn('flex gap-6', className)} {...rest}>
-	<form method="get" action="/auth/authentik{inviteToken ? `?invite=${inviteToken}` : ''}">
+	<form method="get" onsubmit={() => submitted = true}
+				action="/auth/authentik{inviteToken ? `?invite=${inviteToken}` : ''}">
 		<input type="hidden" value={inviteToken} name="invite" />
-		<Button
-			type="submit"
-			onclick={() => {
-				isLoading = true;
-			}}
-		>
-			{#if isLoading}
+		<Button type="submit" disabled={submitted}>
+			{#if submitted}
 				<LucideLoaderCircle class="mr-2 h-4 w-4 animate-spin" />
 			{:else}
 				<img
@@ -30,15 +30,11 @@
 			Sign in with Authentik
 		</Button>
 	</form>
-	<form method="get" action="/auth/google">
+	<form method="get" onsubmit={() => submitted = true}
+				action="/auth/google{inviteToken ? `?invite=${inviteToken}` : ''}">
 		<input type="hidden" value={inviteToken} name="invite" />
-		<Button
-			type="submit"
-			onclick={() => {
-				isLoading = true;
-			}}
-		>
-			{#if isLoading}
+		<Button type="submit" disabled={submitted}>
+			{#if submitted}
 				<LucideLoaderCircle class="mr-2 h-4 w-4 animate-spin" />
 			{:else}
 				<img

src/lib/server/auth.ts

@@ -3,7 +3,7 @@ import { sha256 } from '@oslojs/crypto/sha2';
 import { encodeBase32LowerCaseNoPadding, encodeHexLowerCase } from '@oslojs/encoding';
 import { db } from '$lib/server/db';
 import * as table from '$lib/server/db/schema';
-import type { RequestEvent } from '@sveltejs/kit';
+import type { Cookies } from '@sveltejs/kit';
 import { dev } from '$app/environment';
 import { env } from '$env/dynamic/private';
 
@@ -22,14 +22,14 @@ export async function createSession(userId: string): Promise<table.Session> {
 	const session: table.Session = {
 		id: sessionId,
 		userId,
-		expiresAt: new Date(Date.now() + DAY_IN_MS * 30)
+		expiresAt: new Date(Date.now() + DAY_IN_MS * 30),
 	};
 	await db.insert(table.sessions).values(session);
 	return session;
 }
 
-export function setSessionTokenCookie(event: RequestEvent, sessionId: string, expiresAt: Date) {
-	event.cookies.set(sessionCookieName, sessionId, {
+export function setSessionTokenCookie(cookies: Cookies, sessionId: string, expiresAt: Date) {
+	cookies.set(sessionCookieName, sessionId, {
 		path: '/',
 		sameSite: 'lax',
 		httpOnly: true,
@@ -42,16 +42,21 @@ export async function invalidateSession(sessionId: string): Promise<void> {
 	await db.delete(table.sessions).where(eq(table.sessions.id, sessionId));
 }
 
-export function deleteSessionTokenCookie(event: RequestEvent) {
-	event.cookies.delete(sessionCookieName, { path: '/' });
+export function deleteSessionTokenCookie(cookies: Cookies) {
+	cookies.delete(sessionCookieName, { path: '/' });
 }
 
 export async function validateSession(sessionId: string) {
 	const [result] = await db
 		.select({
 			// Adjust user table here to tweak returned data
-			user: { id: table.users.id, authSource: table.users.authSource, username: table.users.username, name: table.users.name },
-			session: table.sessions
+			user: {
+				id: table.users.id,
+				authSource: table.users.authSource,
+				username: table.users.username,
+				name: table.users.name,
+			},
+			session: table.sessions,
 		})
 		.from(table.sessions)
 		.innerJoin(table.users, eq(table.sessions.userId, table.users.id))

src/routes/auth/+page.server.ts

@@ -1,14 +1,14 @@
-import { fail, redirect } from "@sveltejs/kit";
-import { invalidateSession, deleteSessionTokenCookie } from "$lib/server/auth";
-import type { Actions } from "./$types";
+import { fail, redirect } from '@sveltejs/kit';
+import { invalidateSession, deleteSessionTokenCookie } from '$lib/server/auth';
+import type { Actions } from './$types';
 
 export const actions: Actions = {
-	logout: async (event) => {
-		if (event.locals.session === null) {
+	logout: async ({ locals, cookies }) => {
+		if (locals.session === null) {
 			return fail(401);
 		}
-		await invalidateSession(event.locals.session.id);
-		deleteSessionTokenCookie(event);
-		return redirect(302, "/");
-	}
+		await invalidateSession(locals.session.id);
+		deleteSessionTokenCookie(cookies);
+		redirect(302, '/');
+	},
 };

src/routes/auth/authentik/callback/+server.ts

@@ -48,7 +48,7 @@ export async function GET(event: RequestEvent): Promise<Response> {
 
 	if (existingUser) {
 		const session = await createSession(existingUser.id);
-		setSessionTokenCookie(event, session.id, session.expiresAt);
+		setSessionTokenCookie(event.cookies, session.id, session.expiresAt);
 		return new Response(null, {
 			status: 302,
 			headers: {
@@ -67,7 +67,7 @@ export async function GET(event: RequestEvent): Promise<Response> {
 	try {
 		await db.insert(table.users).values(user);
 		const session = await createSession(user.id);
-		setSessionTokenCookie(event, session.id, session.expiresAt);
+		setSessionTokenCookie(event.cookies, session.id, session.expiresAt);
 	} catch (e) {
 		console.error('failed to create user', e);
 		return new Response(null, {

src/routes/auth/google/+server.ts

@@ -8,7 +8,7 @@ export const GET: RequestHandler = ({ url, cookies }) => {
 	const state = generateState();
 	const codeVerifier = generateCodeVerifier();
 	const scopes = ['openid', 'profile', 'email'];
-	const authUrl = google.createAuthorizationURL(state, codeVerifier, scopes);
+	const authUrl = google.createAuthorizationURL(state + inviteToken, codeVerifier, scopes);
 
 	cookies.set('google_oauth_state', state, {
 		path: '/',
@@ -22,12 +22,6 @@ export const GET: RequestHandler = ({ url, cookies }) => {
 		maxAge: 60 * 10, // 10 minutes
 		sameSite: 'lax',
 	});
-	if (inviteToken !== null) cookies.set('invite_token', inviteToken, {
-		path: '/',
-		httpOnly: true,
-		maxAge: 60 * 10, // 10 minutes
-		sameSite: 'lax',
-	});
 
 	return new Response(null, {
 		status: 302,

src/routes/auth/google/callback/+page.server.ts

@@ -1,25 +1,30 @@
-import type { RequestHandler } from './$types';
-import * as arctic from 'arctic';
-import { google } from '$lib/server/oauth';
-import { db } from '$lib/server/db';
-import { eq } from 'drizzle-orm';
-import * as table from '$lib/server/db/schema';
 import { createSession, isValidInviteToken, setSessionTokenCookie } from '$lib/server/auth';
+import { db } from '$lib/server/db';
+import * as table from '$lib/server/db/schema';
+import { google } from '$lib/server/oauth';
+import { error, redirect } from '@sveltejs/kit';
 import type { OAuth2Tokens } from 'arctic';
+import * as arctic from 'arctic';
+import { eq } from 'drizzle-orm';
 import { assertGuard } from 'typia';
+import type { PageServerLoad } from './$types';
 
-export const GET: RequestHandler = async (event) => {
+export const load: PageServerLoad = async (event) => {
 	const { url, cookies } = event;
+
 	const code = url.searchParams.get('code');
 	const state = url.searchParams.get('state');
 	const storedState = cookies.get('google_oauth_state') ?? null;
-	const codeVerifier = cookies.get('google_code_verifier', ) ?? null;
-	const inviteToken = cookies.get('invite_token') ?? null;
+	const codeVerifier = cookies.get('google_code_verifier') ?? null;
 
 	if (code === null || state === null || storedState === null || codeVerifier === null) {
-		return new Response(null, {
-			status: 400,
-		});
+		error(400, 'Missing url parameters');
+	}
+
+	const stateGeneratedToken = state.slice(0, storedState.length);
+	const stateInviteToken = state.slice(storedState.length);
+	if (stateGeneratedToken !== storedState) {
+		error(400, 'Invalid state in url');
 	}
 
 	let tokens: OAuth2Tokens;
@@ -28,20 +33,14 @@ export const GET: RequestHandler = async (event) => {
 	} catch (e) {
 		if (e instanceof arctic.OAuth2RequestError) {
 			console.debug('Arctic: OAuth: invalid authorization code, credentials, or redirect URI', e);
-			return new Response(null, {
-				status: 400,
-			});
+			throw error(400, 'Invalid authorization code');
 		}
 		if (e instanceof arctic.ArcticFetchError) {
 			console.debug('Arctic: failed to call `fetch()`', e);
-			return new Response(null, {
-				status: 400,
-			});
+			error(400, 'Failed to validate authorization code');
 		}
-
-		return new Response(null, {
-			status: 500,
-		});
+		console.error('Unxepcted error validating authorization code', code, e);
+		error(500);
 	}
 
 	const idToken = tokens.idToken();
@@ -60,20 +59,14 @@ export const GET: RequestHandler = async (event) => {
 
 	if (existingUser) {
 		const session = await createSession(existingUser.id);
-		setSessionTokenCookie(event, session.id, session.expiresAt);
-		return new Response(null, {
-			status: 302,
-			headers: {
-				Location: '/',
-			},
-		});
+		setSessionTokenCookie(cookies, session.id, session.expiresAt);
+		redirect(302, '/');
 	}
 
-	// TODO: proper error page
-	if (inviteToken === null || !isValidInviteToken(inviteToken)) {
-		return new Response(null, {
-			status: 400,
-		});
+	if (!isValidInviteToken(stateInviteToken)) {
+		const message =
+			stateInviteToken.length === 0 ? 'sign up with an invite link first' : 'invalid invite link';
+		error(403, 'Not Authorized: ' + message);
 	}
 
 	const user: table.User = {
@@ -85,16 +78,11 @@ export const GET: RequestHandler = async (event) => {
 
 	// TODO: proper error handling, delete cookies
 	await db.insert(table.users).values(user);
-	console.log('created user', user, 'with invite token', inviteToken);
+	console.log('created user', user, 'with invite token', stateInviteToken);
 
 	const session = await createSession(user.id);
 
-	setSessionTokenCookie(event, session.id, session.expiresAt);
+	setSessionTokenCookie(cookies, session.id, session.expiresAt);
 
-	return new Response(null, {
-		status: 302,
-		headers: {
-			Location: '/',
-		},
-	});
+	redirect(302, '/');
 };