mirror of https://github.com/sveltejs/svelte
Luke Edwards
7 years ago
parent
d6f0b69b72
commit
f22c22c6b3
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import polka from 'polka';
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import devalue from 'devalue';
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import send from '@polka/send';
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import { get, post } from 'httpie';
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import { json } from '@polka/parse';
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import { parse, stringify } from 'querystring';
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import { decode, sign, verify } from './token';
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import { find, query } from '../utils/db';
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const {
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BASEURL,
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GITHUB_CLIENT_ID,
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GITHUB_CLIENT_SECRET,
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} = process.env;
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const OAuth = 'https://github.com/login/oauth';
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function exit(res, code, msg='') {
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send(res, code, msg.charAt(0).toUpperCase() + msg.substring(1));
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}
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function onError(err, req, res) {
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const code = err.code || err.status || 500;
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res.headersSent || send(res, code, err.message || err);
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}
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/**
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* Middleware to determine User validity
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*/
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export async function isUser(req, res) {
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const abort = exit.bind(null, res, 401);
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const auth = req.headers.authorization;
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if (!auth) return abort('Missing Authorization header');
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const [scheme, token] = auth.split(' ');
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if (scheme !== 'Bearer' || !token) return abort('Invalid Authorization format');
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let data;
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const decoded = decode(token, { complete:true });
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if (!decoded || !decoded.header) return abort('Invalid token');
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try {
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data = await verify(token);
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} catch (err) {
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return abort(err.message);
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}
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const { uid, username } = data;
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if (!uid || !username) return abort('Invalid token payload');
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try {
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const row = await find(`select * from users where uid = $1 and username = $2 limit 1`, [uid, username]);
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return row || abort('Invalid token');
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} catch (err) {
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console.error('Auth.isUser', err);
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return send(res, 500, 'Unknown error occurred');
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}
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}
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export function toUser(obj={}) {
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const { uid, username, name:displayName, avatar } = obj;
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const token = sign({ uid, username });
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return { uid, username, displayName, avatar, token };
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}
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export function API() {
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const app = polka({ onError }).use(json());
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if (GITHUB_CLIENT_ID) {
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app.get('/auth/login', (req, res) => {
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try {
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console.log('inside');
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const Location = `${OAuth}/authorize?` + stringify({
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scope: 'read:user',
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client_id: GITHUB_CLIENT_ID,
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redirect_uri: `${BASEURL}/auth/callback`,
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});
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send(res, 302, Location, { Location });
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} catch (err) {
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//
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}
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});
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app.get('/auth/callback', async (req, res) => {
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try {
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// Trade "code" for "access_token"
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const r1 = await post(`${OAuth}/access_token?` + stringify({
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code: req.query.code,
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client_id: GITHUB_CLIENT_ID,
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client_secret: GITHUB_CLIENT_SECRET,
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}));
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// Now fetch User details
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const { access_token } = parse(r1.data);
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const r2 = await get('https://api.github.com/user', {
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headers: {
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'User-Agent': 'svelte.dev',
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Authorization: `token ${access_token}`
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}
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});
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const { id, name, avatar_url, login } = r2.data;
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// Upsert `users` table
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const [user] = await query(`
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insert into users(uid, name, username, avatar, token)
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values ($1, $2, $3, $4, $5) on conflict (uid) do update
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set (name, username, avatar, token) = ($2, $3, $4, $5)
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returning *
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`, [id, name, login, avatar_url, access_token]);
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send(res, 200, `
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<script>
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window.opener.postMessage({
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user: ${devalue(toUser(user))}
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}, window.location.origin);
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</script>
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`, {
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'Content-Type': 'text/html; charset=utf-8'
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});
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} catch (err) {
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console.error('OAuth Callback', err);
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send(res, 500, err.data, {
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'Content-Type': err.headers['content-type'],
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'Content-Length': err.headers['content-length']
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});
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}
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});
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} else {
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// Print "Misconfigured" error
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app.get('/auth/login', (req, res) => {
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send(res, 500, `
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<body style="font-family: sans-serif; background: rgb(255,215,215); border: 2px solid red; margin: 0; padding: 1em;">
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<h1>Missing .env file</h1>
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<p>In order to use GitHub authentication, you will need to <a target="_blank" href="https://github.com/settings/developers">register an OAuth application</a> with <code>gist</code> and <code>read:user</code> scopes, and create a .env file:</p>
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<pre>GITHUB_CLIENT_ID=[YOUR_APP_ID]\nGITHUB_CLIENT_SECRET=[YOUR_APP_SECRET]\nBASEURL=http://localhost:3000</pre>
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<p>The <code>BASEURL</code> variable should match the callback URL specified for your app.</p>
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</body>
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`, {
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'Content-Type': 'text/html; charset=utf-8'
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});
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});
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}
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return app;
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}
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@ -0,0 +1,22 @@
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import * as jwt from 'jsonwebtoken';
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const { JWT_KEY, JWT_ALG, JWT_EXP } = process.env;
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const CONFIG = {
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expiresIn: JWT_EXP,
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issuer: 'https://svelte.dev',
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audience: 'https://svelte.dev',
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algorithm: JWT_ALG,
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};
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export const decode = jwt.decode;
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export function sign(obj, opts, cb) {
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opts = Object.assign({}, opts, CONFIG);
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return jwt.sign(obj, JWT_KEY, opts, cb);
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}
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export function verify(str, opts, cb) {
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opts = Object.assign({}, opts, CONFIG);
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return jwt.verify(str, JWT_KEY, opts, cb);
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}
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