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import express, { NextFunction, Request, Response } from 'express';
import { v4 as uuid } from 'uuid';
import { hash, compare } from 'bcrypt'
import { sign, verify } from 'jsonwebtoken';
import database from '../database';
import { isOfType, asyncify } from '../util';
import { getPublicKey, getPrivateKey } from '../keys';
const auth = express();
interface RegisterBody {
username: string;
password: string;
}
auth.post('/register', async (req, res) => {
if (isOfType<RegisterBody>(req.body, ['username', 'password'])) {
const body: RegisterBody = req.body;
const id = uuid();
const passwdHash = await hash(body.password, 10);
try {
await database('users').insert({
id: id,
user_name: body.username,
passwd_hash: passwdHash
});
res.status(200).json({
status: 'success',
});
} catch (e) {
res.status(400).json({
status: 'error',
message: 'failed to create user',
});
}
} else {
res.status(400).json({
status: 'error',
message: 'missing request fields',
});
}
});
interface TokenBody {
username: string;
password: string;
}
auth.post('/token', async (req, res) => {
if (isOfType<TokenBody>(req.body, ['username', 'password'])) {
const body: TokenBody = req.body;
try {
const user = await database('users').where({ user_name: body.username });
if (user.length === 1) {
if (await compare(body.password, user[0].passwd_hash)) {
const token = await asyncify(sign, {
id: user[0].id,
}, await getPrivateKey(), { algorithm: "ES384", expiresIn: 60 * 60 });
res.status(200).json({
status: 'success',
token: token,
});
} else {
res.status(400).json({
status: 'error',
message: 'wrong username or password',
});
}
} else {
res.status(400).json({
status: 'error',
message: 'username not found',
});
}
} catch (e) {
console.error(e);
res.status(400).json({
status: 'error',
message: 'failed to acquire token',
});
}
} else {
res.status(400).json({
status: 'error',
message: 'missing request fields',
});
}
});
auth.get("/extend", async function (req, res) {
if (req.body?.token) {
const token = await asyncify(sign, {
id: req.body.token.id,
}, await getPrivateKey(), { algorithm: "ES384", expiresIn: 60 * 60 });
res.status(200).json({
status: 'success',
token: token,
});
} else {
res.status(403).json({
status: 'error',
message: 'authentication failed',
});
}
});
export async function tokenVerification(req: Request, res: Response, next: NextFunction) {
const header = req.headers?.authorization;
let token: string | null = null;
if (header) {
const bearer = header.split(' ');
token = bearer[1];
} else if (req.body?.token) {
token = req.body?.token;
}
if (token) {
try {
const decoded = await asyncify(verify, token, await getPublicKey(), { algorithms: ["ES384"] });
req.body.token = decoded;
next();
} catch (err) {
res.status(403).json({
status: 'error',
message: 'authentication failed',
});
}
} else {
next();
}
}
export default auth;