use zod for register verification

package-lock.json

@@ -44,7 +44,8 @@
 				"tslib": "^2.8.0",
 				"typescript": "^5.6.3",
 				"vite": "^5.4.9",
-				"vitest": "^2.1.3"
+				"vitest": "^2.1.3",
+				"zod": "^3.23.8"
 			}
 		},
 		"node_modules/@alloc/quick-lru": {
@@ -7618,6 +7619,16 @@
 			"funding": {
 				"url": "https://github.com/sponsors/sindresorhus"
 			}
+		},
+		"node_modules/zod": {
+			"version": "3.23.8",
+			"resolved": "https://registry.npmjs.org/zod/-/zod-3.23.8.tgz",
+			"integrity": "sha512-XBx9AXhXktjUqnepgTiE5flcKIYWi/rme0Eaj+5Y0lftuGBq+jyRu/md4WnuxqgP1ubdpNCsYEYPxrzVHD8d6g==",
+			"dev": true,
+			"license": "MIT",
+			"funding": {
+				"url": "https://github.com/sponsors/colinhacks"
+			}
 		}
 	}
 }

package.json

@@ -41,7 +41,8 @@
 		"tslib": "^2.8.0",
 		"typescript": "^5.6.3",
 		"vite": "^5.4.9",
-		"vitest": "^2.1.3"
+		"vitest": "^2.1.3",
+		"zod": "^3.23.8"
 	},
 	"type": "module",
 	"dependencies": {

src/routes/register/+server.ts

@@ -1,6 +1,7 @@
 import { ApiError, getJavaUuid, getNoAuthUuid, UserNotFoundError } from '$lib/server/minecraft';
 import { error, type RequestHandler } from '@sveltejs/kit';
 import { Settings, User } from '$lib/server/database';
+import { RegisterSchema } from './schema';
 
 export const POST = (async ({ request }) => {
 	// eslint-disable-next-line @typescript-eslint/ban-ts-comment
@@ -9,48 +10,33 @@ export const POST = (async ({ request }) => {
 		throw error(400, 'Anmeldung geschlossen');
 	}
 
-	const data = await request.formData();
-	const firstname = data.get('firstname') as string | null;
-	const lastname = data.get('lastname') as string | null;
-	const birthday: number = Date.parse(data.get('birthday') as string);
-	const telephone = data.get('telephone') as string | null;
-	const username = data.get('username') as string | null;
-	const playertype = data.get('playertype') as string | null;
-	const password = data.get('password') as string | null;
-
-	if (
-		firstname == null ||
-		lastname == null ||
-		Number.isNaN(birthday) ||
-		username == null ||
-		playertype == null
-	) {
+	try {
+		var data = RegisterSchema.parse(await request.json());
+	} catch (e) {
+		console.error(e);
 		throw error(400, 'Ungültige Parameter');
 	}
 
 	let uuid: string | null;
 	try {
-		// available playertypes are 'java', 'bedrock' and 'noauth'
-		switch (data.get('playertype')) {
+		switch (data.playertype) {
 			case 'java':
-				uuid = await getJavaUuid(username);
+				uuid = await getJavaUuid(data.username);
 				break;
 			case 'bedrock':
 				uuid = null;
 				// uuid = await getBedrockUuid(username);
 				break;
 			case 'noauth':
-				uuid = getNoAuthUuid(username);
+				uuid = getNoAuthUuid(data.username);
 				break;
-			default:
-				throw new Error(`invalid player type (${playertype})`);
 		}
 	} catch (e) {
 		if (e instanceof UserNotFoundError) {
 			throw error(
 				400,
 				"Der Spielername '" +
-					username +
+					data.username +
 					"' existiert nicht. Hast Du Deinen Spielernamen korrekt geschrieben " +
 					'und besitzt Du einen Minecraft-Account?\n\nKontaktiere bitte einen Admin, falls Du Dich trotz korrekter ' +
 					'Angabe nicht registrieren kannst.'
@@ -74,9 +60,9 @@ export const POST = (async ({ request }) => {
 	} else if (
 		await User.findOne({
 			where: {
-				firstname: firstname,
-				lastname: lastname,
-				birthday: new Date(birthday).toUTCString()
+				firstname: data.firstname,
+				lastname: data.lastname,
+				birthday: data.birthday.toUTCString()
 			}
 		})
 	) {
@@ -89,13 +75,13 @@ export const POST = (async ({ request }) => {
 	}
 
 	await User.create({
-		firstname: firstname,
-		lastname: lastname,
-		birthday: new Date(birthday).toUTCString(),
-		telephone: telephone,
-		username: username,
-		playertype: playertype,
-		password: password,
+		firstname: data.firstname,
+		lastname: data.lastname,
+		birthday: data.birthday.toUTCString(),
+		telephone: data.telephone,
+		username: data.username,
+		playertype: data.playertype,
+		password: null,
 		uuid: uuid
 	});
 

src/routes/register/Register.svelte

@@ -4,6 +4,7 @@
 	import { createEventDispatcher, onMount } from 'svelte';
 	import { env } from '$env/dynamic/public';
 	import { rulesShort } from '$lib/rules';
+	import { RegisterSchema } from './schema';
 
 	const dispatch = createEventDispatcher();
 
@@ -40,21 +41,18 @@
 	async function sendRegister() {
 		// eslint-disable-next-line no-async-promise-executor
 		registerRequest = new Promise<void>(async (resolve, reject) => {
-			if (
-				(birthdayInput.valueAsDate || new Date()) >
-				new Date(Date.now() - 1000 * 60 * 60 * 24 * 365 * 6)
-			) {
-				reject(
-					Error(
-						'Bitte gib Deinen vollständigen Geburtstag und die korrekte Jahreszahl an. Du musst mindestens 6 Jahre alt sein.\n'
-					)
-				);
+			const parseResult = RegisterSchema.safeParse(
+				Object.fromEntries(new FormData(document.forms[0]))
+			);
+
+			if (!parseResult.success) {
+				reject(Error(parseResult.error.issues.map((i) => i.message).join('\n\n')));
 				return;
 			}
 
 			const response = await fetch(`${env.PUBLIC_BASE_PATH}/register`, {
 				method: 'POST',
-				body: new FormData(document.forms[0])
+				body: JSON.stringify(Object.fromEntries(new FormData(document.forms[0])))
 			});
 			if (response.ok) {
 				dispatch('submit', {
@@ -80,7 +78,7 @@
 	let rulesAccepted = false;
 	let rulesModal: HTMLDialogElement;
 	let rulesModalSecondsOpened = 0;
-	let rulesModalTimer: number | null = null;
+	let rulesModalTimer: number | NodeJS.Timeout | undefined = undefined;
 
 	let inputsInvalidMessage: string | null = 'Bitte fülle alle erforderlichen Felder aus';
 	let registerRequest: Promise<void> | null = null;
@@ -248,7 +246,7 @@
 	class="modal"
 	on:close={() => {
 		clearInterval(rulesModalTimer);
-		rulesModalTimer = null;
+		rulesModalTimer = undefined;
 	}}
 	bind:this={rulesModal}
 >

src/routes/register/schema.ts

@@ -0,0 +1,15 @@
+import { z } from 'zod';
+
+export const RegisterSchema = z.object({
+	firstname: z.string(),
+	lastname: z.string(),
+	birthday: z.coerce
+		.date()
+		.max(
+			new Date(Date.now() - 1000 * 60 * 60 * 24 * 365 * 6),
+			'Bitte gib Deinen vollständigen Geburtstag und die korrekte Jahreszahl an. Du musst mindestens 6 Jahre alt sein.'
+		),
+	telephone: z.string().optional(),
+	username: z.string(),
+	playertype: z.enum(['java', 'bedrock', 'noauth'])
+});