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/*
Fosscord: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Fosscord and Fosscord Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { checkToken, Config, Rights } from "@fosscord/util";
import * as Sentry from "@sentry/node";
import { NextFunction, Request, Response } from "express";
import { HTTPError } from "lambert-server";
export const NO_AUTHORIZATION_ROUTES = [
// Authentication routes
"/auth/login",
"/auth/register",
"/auth/location-metadata",
"/auth/mfa/totp",
"/auth/mfa/webauthn",
"/auth/verify",
"/auth/forgot",
"/auth/reset",
// Routes with a seperate auth system
"/webhooks/",
// Public information endpoints
"/ping",
"/gateway",
"/experiments",
"/updates",
"/download",
"/scheduled-maintenances/upcoming.json",
// Public kubernetes integration
"/-/readyz",
"/-/healthz",
// Client analytics
"/science",
"/track",
// Public policy pages
"/policies/instance",
// Oauth callback
"/oauth2/callback",
// Asset delivery
/\/guilds\/\d+\/widget\.(json|png)/,
];
export const API_PREFIX = /^\/api(\/v\d+)?/;
export const API_PREFIX_TRAILING_SLASH = /^\/api(\/v\d+)?\//;
declare global {
// eslint-disable-next-line @typescript-eslint/no-namespace
namespace Express {
interface Request {
user_id: string;
user_bot: boolean;
token: { id: string; iat: number };
rights: Rights;
}
}
}
export async function Authentication(
req: Request,
res: Response,
next: NextFunction,
) {
if (req.method === "OPTIONS") return res.sendStatus(204);
const url = req.url.replace(API_PREFIX, "");
if (url.startsWith("/invites") && req.method === "GET") return next();
if (
NO_AUTHORIZATION_ROUTES.some((x) => {
if (typeof x === "string") return url.startsWith(x);
return x.test(url);
})
)
return next();
if (!req.headers.authorization)
return next(new HTTPError("Missing Authorization Header", 401));
Sentry.setUser({ id: req.user_id });
try {
const { jwtSecret } = Config.get().security;
const { decoded, user } = await checkToken(
req.headers.authorization,
jwtSecret,
);
req.token = decoded;
req.user_id = decoded.id;
req.user_bot = user.bot;
req.rights = new Rights(Number(user.rights));
return next();
} catch (error) {
// eslint-disable-next-line @typescript-eslint/no-non-null-assertion
return next(new HTTPError(error!.toString(), 400));
}
}
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