WIP: implement wg-quick as a provider

.env.example

@@ -13,11 +13,18 @@ AUTH_GOOGLE_CLIENT_SECRET=
 
 AUTH_INVITE_TOKEN=GUjdsz9aREFTEBYDrA3AajUE8oVys2xW
 
+WG_PROVIDER=opnsense
+
 OPNSENSE_API_URL=https://opnsense.cazzzer.com
 OPNSENSE_API_KEY=
 OPNSENSE_API_SECRET=
 OPNSENSE_WG_IFNAME=wg2
 
+WG_QUICK_FILENAME=wg0.conf
+WG_QUICK_PRIVATE_KEY=MHV1/cTPiuOlEwwQ011dSn0e2c+sNRcPnA2e/74+N2E=
+WG_QUICK_ADDRESS=10.20.30.1,fd00::1
+WG_QUICK_LISTEN_PORT=51820
+
 IPV4_STARTING_ADDR=10.18.11.100
 IPV6_STARTING_ADDR=fd00:10:18:11::100:0
 IPV6_CLIENT_PREFIX_SIZE=112

.gitignore

@@ -22,3 +22,6 @@ vite.config.ts.timestamp-*
 
 # SQLite
 *.db
+
+# Generated wireguard configs
+wg*.conf

bun.lock

@@ -21,6 +21,7 @@
         "@tailwindcss/forms": "^0.5.10",
         "@tailwindcss/typography": "^0.5.16",
         "@types/better-sqlite3": "^7.6.13",
+        "@types/bun": "^1.2.13",
         "@types/eslint": "^9.6.1",
         "@types/qrcode-svg": "^1.1.5",
         "arctic": "^2.3.4",
@@ -281,6 +282,8 @@
 
     "@types/better-sqlite3": ["@types/better-sqlite3@7.6.13", "", { "dependencies": { "@types/node": "*" } }, "sha512-NMv9ASNARoKksWtsq/SHakpYAYnhBrQgGD8zkLYk/jaK8jUGn08CfEdTRgYhMypUQAfzSP8W6gNLe0q19/t4VA=="],
 
+    "@types/bun": ["@types/bun@1.2.13", "", { "dependencies": { "bun-types": "1.2.13" } }, "sha512-u6vXep/i9VBxoJl3GjZsl/BFIsvML8DfVDO0RYLEwtSZSp981kEO1V5NwRcO1CPJ7AmvpbnDCiMKo3JvbDEjAg=="],
+
     "@types/cookie": ["@types/cookie@0.6.0", "", {}, "sha512-4Kh9a6B2bQciAhf7FSuMRRkUWecJgJu9nPnx3yzpsfXX/c50REIqpHY4C82bXP90qrLtXtkDxTZosYO3UpOwlA=="],
 
     "@types/eslint": ["@types/eslint@9.6.1", "", { "dependencies": { "@types/estree": "*", "@types/json-schema": "*" } }, "sha512-FXx2pKgId/WyYo2jXw63kk7/+TY7u7AziEJxJAnSFzHlqTAS3Ync6SvgYAN/k4/PQpnnVuzoMuVnByKK2qp0ag=="],
@@ -363,6 +366,8 @@
 
     "buffer-from": ["buffer-from@1.1.2", "", {}, "sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ=="],
 
+    "bun-types": ["bun-types@1.2.13", "", { "dependencies": { "@types/node": "*" } }, "sha512-rRjA1T6n7wto4gxhAO/ErZEtOXyEZEmnIHQfl0Dt1QQSB4QV0iP6BZ9/YB5fZaHFQ2dwHFrmPaRQ9GGMX01k9Q=="],
+
     "callsites": ["callsites@3.1.0", "", {}, "sha512-P8BjAsXvZS+VIDUI11hHCQEv74YT67YUi5JJFNWIqL235sBmjX4+qx9Muvls5ivyNENctx46xQLQ3aTuE7ssaQ=="],
 
     "camelcase-css": ["camelcase-css@2.0.1", "", {}, "sha512-QOSvevhslijgYwRx6Rv7zKdMF8lbRmx+uQGx2+vDc+KI/eBnsy9kit5aj23AgGu3pa4t9AgwbnXWqS+iOY+2aA=="],

package.json

@@ -4,9 +4,9 @@
 	"license": "AGPL-3.0-or-later",
 	"type": "module",
 	"scripts": {
-		"dev": "vite dev",
-		"build": "vite build",
-		"preview": "vite preview",
+		"dev": "bun x --bun vite dev",
+		"build": "bun x --bun vite build",
+		"preview": "bun x --bun vite preview",
 		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
 		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
 		"format": "prettier --write .",
@@ -31,6 +31,7 @@
 		"@tailwindcss/forms": "^0.5.10",
 		"@tailwindcss/typography": "^0.5.16",
 		"@types/better-sqlite3": "^7.6.13",
+		"@types/bun": "^1.2.13",
 		"@types/eslint": "^9.6.1",
 		"@types/qrcode-svg": "^1.1.5",
 		"arctic": "^2.3.4",

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

@@ -0,0 +1,28 @@
+<script lang="ts">
+	import { LucideLoaderCircle } from '@lucide/svelte';
+	import { Button } from '$lib/components/ui/button';
+
+	interface Props {
+		providerName: string;
+		displayName: string;
+		iconSrc: string;
+		inviteToken?: string;
+	}
+	let { providerName, displayName, inviteToken, iconSrc }: Props = $props();
+
+	let submitted = $state(false);
+</script>
+
+<form method="get" onsubmit={() => (submitted = true)} action="/auth/{providerName}">
+	{#if inviteToken}
+		<input type="hidden" value={inviteToken} name="invite" />
+	{/if}
+	<Button type="submit" disabled={submitted}>
+		{#if submitted}
+			<LucideLoaderCircle class="mr-2 h-4 w-4 animate-spin" />
+		{:else}
+			<img class="mr-2 h-4 w-4" alt="{displayName} Logo" src={iconSrc} />
+		{/if}
+		Sign {inviteToken ? 'up' : 'in'} with {displayName}
+	</Button>
+</form>

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

@@ -1,54 +1,26 @@
 <script lang="ts">
-	import { LucideLoaderCircle } from '@lucide/svelte';
-	import { Button } from '$lib/components/ui/button';
 	import { cn } from '$lib/utils.js';
 	import googleIcon from '$lib/assets/google.svg';
 	import { enabledAuthProviders } from '$lib/auth';
+	import AuthButton from './auth-button.svelte';
 
-	let { inviteToken, class: className, ...rest }: {
+	interface Props {
 		inviteToken?: string;
 		class?: string;
-		rest?: { [p: string]: unknown }
-	} = $props();
-
-	let submitted = $state(false);
+	}
+	let { inviteToken, class: className }: Props = $props();
 </script>
 
-<div class={cn('flex gap-6', className)} {...rest}>
-	{#if enabledAuthProviders.authentik }
-	<form method="get" onsubmit={() => submitted = true}
-				action="/auth/authentik{inviteToken ? `?invite=${inviteToken}` : ''}">
-		<input type="hidden" value={inviteToken} name="invite" />
-		<Button type="submit" disabled={submitted}>
-			{#if submitted}
-				<LucideLoaderCircle class="mr-2 h-4 w-4 animate-spin" />
-			{:else}
-				<img
-					class="mr-2 h-4 w-4"
-					alt="Authentik Logo"
-					src="https://auth.cazzzer.com/static/dist/assets/icons/icon.svg"
+<div class={cn('flex gap-6', className)}>
+	{#if enabledAuthProviders.authentik}
+		<AuthButton
+			providerName="authentik"
+			displayName="Authentik"
+			iconSrc="https://auth.cazzzer.com/static/dist/assets/icons/icon.svg"
+			{inviteToken}
 		/>
 	{/if}
-			Sign in with Authentik
-		</Button>
-	</form>
-	{/if}
-	{#if enabledAuthProviders.google }
-	<form method="get" onsubmit={() => submitted = true}
-				action="/auth/google{inviteToken ? `?invite=${inviteToken}` : ''}">
-		<input type="hidden" value={inviteToken} name="invite" />
-		<Button type="submit" disabled={submitted}>
-			{#if submitted}
-				<LucideLoaderCircle class="mr-2 h-4 w-4 animate-spin" />
-			{:else}
-				<img
-					class="mr-2 h-4 w-4"
-					alt="Google Logo"
-					src={googleIcon}
-				/>
-			{/if}
-			Sign in with Google
-		</Button>
-	</form>
+	{#if enabledAuthProviders.google}
+		<AuthButton providerName="google" displayName="Google" iconSrc={googleIcon} {inviteToken} />
 	{/if}
 </div>

src/lib/server/wg-provider.ts

@@ -1,12 +1,32 @@
-import { WgProviderOpnsense } from '$lib/server/wg-providers/opnsense';
+import { assertGuard } from 'typia';
 import { env } from '$env/dynamic/private';
 import type { IWgProvider } from '$lib/server/types';
+import { WgProviderOpnsense } from '$lib/server/wg-providers/opnsense';
+import { WgProviderWgQuick } from '$lib/server/wg-providers/wg-quick';
 
-const wgProvider: IWgProvider = new WgProviderOpnsense({
+const opnsense: IWgProvider = new WgProviderOpnsense({
 	opnsenseUrl: env.OPNSENSE_API_URL,
 	opnsenseApiKey: env.OPNSENSE_API_KEY,
 	opnsenseApiSecret: env.OPNSENSE_API_SECRET,
 	opnsenseWgIfname: env.OPNSENSE_WG_IFNAME,
 });
 
+const wgQuick: IWgProvider = new WgProviderWgQuick({
+	filename: env.WG_QUICK_FILENAME,
+	address: env.WG_QUICK_ADDRESS,
+	privateKey: env.WG_QUICK_PRIVATE_KEY,
+	listenPort: parseInt(env.WG_QUICK_LISTEN_PORT),
+});
+
+const providers = {
+	opnsense,
+	'wg-quick': wgQuick,
+};
+
+const chosenProvider = env.WG_PROVIDER?? 'wg-quick';
+assertGuard<keyof typeof providers>(chosenProvider, () =>
+	Error(`WG_PROVIDER must be one of ${Object.keys(providers).join(', ')}`),
+);
+
+const wgProvider = providers[chosenProvider];
 export default wgProvider;

src/lib/server/wg-providers/wg-quick/index.ts

@@ -0,0 +1,76 @@
+import assert from 'node:assert';
+import { appendFile } from 'node:fs/promises';
+import type { ClientConnection, CreateClientParams, IWgProvider, WgKeys } from '$lib/server/types';
+import { err, ok, type Result } from '$lib/types';
+import {
+	type IWgQuickInterfaceConfig,
+	wgGenPrivKey,
+	wgGenPsk,
+	wgGenPubKey,
+	wgPeerConfig,
+	wgQuickInterfaceConfig, wgQuickUp
+} from './snippets';
+import type { User } from '$lib/server/db/schema';
+
+export class WgProviderWgQuick implements IWgProvider {
+	private filename: string;
+	private publicKey?: string;
+	private config: IWgQuickInterfaceConfig;
+
+	constructor(params: WgQuickParams) {
+		this.filename = params.filename;
+		this.config = {
+			address: params.address,
+			privateKey: params.privateKey,
+			listenPort: params.listenPort,
+		};
+	}
+
+	async init(): Promise<Result<null, Error>> {
+		const file = Bun.file(this.filename);
+
+		this.publicKey = await wgGenPubKey(this.config.privateKey);
+		console.log(`wg-quick: running with public key: ${this.publicKey}`);
+		if (await file.exists()) {
+			// TODO: Check if the file is a valid WireGuard config file and our settings match
+			return ok(null);
+		}
+		await Bun.write(this.filename, wgQuickInterfaceConfig(this.config) + '\n');
+		console.log('created wg-quick config file', this.filename);
+		return wgQuickUp(this.filename);
+	}
+
+	getServerPublicKey(): string {
+		assert(this.publicKey, 'WgQuick public key not set, init() must be called first');
+		return this.publicKey;
+	}
+
+	async generateKeys(): Promise<Result<WgKeys, Error>> {
+		const privateKey = await wgGenPrivKey();
+		const publicKey = await wgGenPubKey(privateKey);
+		const preSharedKey = await wgGenPsk();
+		return ok({
+			publicKey,
+			privateKey,
+			preSharedKey,
+		});
+	}
+
+	async createClient(params: CreateClientParams): Promise<Result<null, Error>> {
+		const peerConfig = wgPeerConfig(params);
+		await appendFile(this.filename, peerConfig + `\n`);
+		return ok(null);
+	}
+
+	async findConnections(user: User): Promise<Result<ClientConnection[], Error>> {
+		return err(Error('WgProviderWgQuick: listing connection information is not yet supported'));
+	}
+
+	async deleteClient(publicKey: string): Promise<Result<null, Error>> {
+		return err(Error('WgProviderWgQuick: deleting client is not yet supported'));
+	}
+}
+
+interface WgQuickParams extends IWgQuickInterfaceConfig {
+	filename: string;
+}

src/lib/server/wg-providers/wg-quick/snippets.ts

@@ -0,0 +1,59 @@
+import { $ } from 'bun';
+import type { CreateClientParams } from '$lib/server/types';
+import { err, ok, type Result } from '$lib/types';
+
+export type IWgQuickInterfaceConfig = {
+	address: string;
+	privateKey: string;
+	listenPort: number;
+}
+
+export function wgQuickInterfaceConfig(params: IWgQuickInterfaceConfig): string {
+	return`\
+[Interface]
+Address = ${params.address}
+PrivateKey = ${params.privateKey}
+ListenPort = ${params.listenPort}
+`;
+}
+
+export function wgPeerConfig(params: CreateClientParams): string {
+	return`\
+[Peer]
+PublicKey = ${params.publicKey}
+PresharedKey = ${params.preSharedKey}
+AllowedIPs = ${params.allowedIps}
+# vpgen-user = ${params.user.username}
+`;
+}
+
+export async function runCommand(command: string): Promise<Result<null, Error>> {
+	const result = await $`${command}`;
+	if (result.exitCode !== 0) return err(Error(`'${command}' failed with exit code ${result.exitCode}\n${result.stderr.toString()}`));
+	return ok(null);
+}
+
+export async function wgQuickUp(ifname: string): Promise<Result<null, Error>> {
+	return runCommand(`wg-quick up ${ifname}`);
+}
+
+export async function wgQuickDown(ifname: string): Promise<Result<null, Error>> {
+	return runCommand(`wg-quick down ${ifname}`);
+}
+
+export async function wgReload(ifname: string): Promise<Result<null, Error>> {
+	return runCommand(`wg-quick strip ${ifname} | wg syncconf ${ifname} /dev/stdin`);
+	// return runCommand(`wg syncconf ${ifname} <(wg-quick strip ${ifname})`);
+}
+
+export async function wgGenPubKey(privateKey: string) {
+	return (await $`echo ${privateKey} | wg pubkey`.text()).trim();
+}
+
+export async function wgGenPrivKey() {
+	return (await $`wg genkey`.text()).trim();
+}
+
+export async function wgGenPsk() {
+	return (await $`wg genpsk`.text()).trim();
+}

src/routes/invite/[id]/+layout.server.ts

@@ -2,6 +2,7 @@ import type { LayoutServerLoad } from './$types';
 import { redirect } from '@sveltejs/kit';
 import { isValidInviteToken } from '$lib/server/auth';
 
-export const load: LayoutServerLoad = ({ params }) => {
-	if (!isValidInviteToken(params.id)) redirect(307, '/')
+export const load: LayoutServerLoad = ({ params, locals }) => {
+	if (!isValidInviteToken(params.id)) redirect(302, '/');
+	if (locals.user !== null) redirect(302, '/');
 };

src/routes/invite/[id]/+page.svelte

@@ -10,7 +10,7 @@
 </svelte:head>
 
 <h1 class="mb-2 scroll-m-20 text-center text-3xl font-extrabold tracking-tight lg:text-4xl">
-	Welcome to VPGen
+	You are invited to VPGen
 </h1>
 
-<AuthForm inviteToken={inviteToken} />
+<AuthForm {inviteToken} />