OpenAuth_server/Backend/src/api/jrpc/services/login.ts

266 lines
8.6 KiB
TypeScript

import { Server, LoginState, TFAOption, TFAType } from "@hibas123/openauth-internalapi";
import type { SessionContext } from "../index";
import Logging from "@hibas123/nodelogging";
import User, { IUser } from "../../../models/user";
import moment from "moment";
import crypto from "node:crypto";
import TwoFactor, { ITwoFactor, IWebAuthn } from "../../../models/twofactor";
import speakeasy from "speakeasy";
import { generateAuthenticationOptions, verifyAuthenticationResponse } from "@simplewebauthn/server";
import config from "../../../config";
//FIXME: There are a lot of uneccessary database requests happening here. Since this is not a "hot" path, it should not matter to much, but it should be fixed nontheless.
export default class LoginService extends Server.LoginService<SessionContext> {
private async getUser(username: string): Promise<IUser> {
let user = await User.findOne({ username: username.toLowerCase() });
if (!user) {
throw new Error("User not found");
}
return user;
}
private async getLoginState(ctx: SessionContext): Promise<LoginState> {
if (ctx.user && ctx.session.validated) {
return {
success: true
}
} else if (ctx.session.login_state) {
//TODO: Check login_state expiration or so
if (ctx.session.login_state.username) {
let user = await this.getUser(ctx.session.login_state.username);
if (!ctx.session.login_state.password_correct) {
let passwordSalt = user.salt;
return {
success: false,
username: ctx.session.login_state.username,
password: false,
passwordSalt: passwordSalt,
}
} else {
let tfa = await this.getTwoFactors(await this.getUser(ctx.session.login_state.username))
if (tfa.length <= 0) {
ctx.session.user_id = user._id.toString();
ctx.session.login_state = undefined;
Logging.warn("This should have been set somewhere else!");
return {
success: true,
}
} else {
return {
success: false,
username: ctx.session.login_state.username,
password: true,
requireTwoFactor: tfa,
}
}
}
}
} else {
return {
success: false,
username: undefined,
password: false,
}
}
}
private async getTwoFactors(user: IUser): Promise<TFAOption[]> {
let twofactors = await TwoFactor.find({
user: user._id,
valid: true
})
return twofactors.map<TFAOption>(tf => {
return {
id: tf._id.toString(),
name: tf.name,
tfatype: tf.type as number,
}
})
}
private async enableSession(ctx: SessionContext) {
let user = await this.getUser(ctx.session.login_state.username);
ctx.user = user;
ctx.session.user_id = user._id.toString();
ctx.session.login_state = undefined;
ctx.session.validated = true;
}
GetState(ctx: SessionContext): Promise<LoginState> {
return this.getLoginState(ctx);
}
async Start(username: string, ctx: SessionContext): Promise<LoginState> {
let user = await this.getUser(username);
ctx.session.login_state = {
username: username,
password_correct: false,
}
return this.getLoginState(ctx);
}
async UsePassword(password_hash: string, date: number, ctx: SessionContext): Promise<LoginState> {
if (!ctx.session.login_state) {
throw new Error("No login state. Call Start() first.");
}
let user = await this.getUser(ctx.session.login_state.username);
if (date <= 0) {
if (user.password !== password_hash) {
throw new Error("Password incorrect");
}
} else {
if (
!moment(date).isBetween(
moment().subtract(1, "minute"),
moment().add(1, "minute")
)
) {
throw new Error("Date incorrect. Please check your devices time!");
} else {
let upw = crypto
.createHash("sha512")
.update(user.password + date.toString())
.digest("hex");
if (upw !== password_hash) {
throw new Error("Password incorrect");
}
}
}
ctx.session.login_state.password_correct = true;
let tfas = await this.getTwoFactors(user);
if (tfas.length <= 0) {
await this.enableSession(ctx);
}
return this.getLoginState(ctx);
}
private async getAndCheckTFA<T extends ITwoFactor>(id: string, shouldType: TFAType, ctx: SessionContext): Promise<T> {
if (!ctx.session.login_state) {
throw new Error("No login state. Call Start() first.");
}
let user = await this.getUser(ctx.session.login_state.username);
let tfa = await TwoFactor.findById(id);
if (!tfa || tfa.user.toString() != user._id.toString()) {
throw new Error("Two factor not found");
}
if (tfa.type != shouldType as number) {
throw new Error("Two factor is not the correct type!");
}
if (!tfa.valid) {
throw new Error("Two factor is not valid");
}
if (tfa.expires && moment().isAfter(moment(tfa.expires))) {
throw new Error("Two factor is expired");
}
return tfa as T;
}
async UseTOTP(id: string, code: string, ctx: SessionContext): Promise<LoginState> {
let tfa = await this.getAndCheckTFA(id, TFAType.TOTP, ctx);
let valid = speakeasy.totp.verify({
secret: tfa.data,
encoding: "base32",
token: code,
});
if (!valid) {
throw new Error("Code incorrect");
}
await this.enableSession(ctx);
return this.getLoginState(ctx);
}
async UseBackupCode(id: string, code: string, ctx: SessionContext): Promise<LoginState> {
let tfa = await this.getAndCheckTFA(id, TFAType.BACKUP_CODE, ctx);
if (tfa.data.indexOf(code) < 0) {
throw new Error("Code incorrect");
}
tfa.data = tfa.data.filter(c => c != code);
await TwoFactor.save(tfa);
//TODO: handle the case where the last backup code is used
await this.enableSession(ctx);
return this.getLoginState(ctx);
}
async GetWebAuthnChallenge(id: string, ctx: SessionContext): Promise<string> {
let tfa = await this.getAndCheckTFA<IWebAuthn>(id, TFAType.WEBAUTHN, ctx);
const rpID = new URL(config.core.url).hostname;
let options = generateAuthenticationOptions({
timeout: 60000,
userVerification: "discouraged",
rpID,
allowCredentials: [{
id: tfa.data.device.credentialID.buffer,
type: "public-key",
transports: tfa.data.device.transports
}]
})
ctx.session.login_state.webauthn_challenge = options.challenge;
Logging.debug("Challenge", options, tfa, tfa.data.device.credentialID);
return JSON.stringify(options);
}
async UseWebAuthn(id: string, response: string, ctx: SessionContext): Promise<LoginState> {
let tfa = await this.getAndCheckTFA<IWebAuthn>(id, TFAType.WEBAUTHN, ctx);
if (!ctx.session.login_state.webauthn_challenge) {
throw new Error("No webauthn challenge");
}
let rpID = new URL(config.core.url).hostname;
let verification = await verifyAuthenticationResponse({
response: JSON.parse(response),
authenticator: {
counter: tfa.data.device.counter,
credentialID: tfa.data.device.credentialID.buffer,
credentialPublicKey: tfa.data.device.credentialPublicKey.buffer,
transports: tfa.data.device.transports
},
expectedChallenge: ctx.session.login_state.webauthn_challenge,
expectedOrigin: config.core.url,
expectedRPID: rpID,
requireUserVerification: false
})
if (verification.verified) {
tfa.data.device.counter = verification.authenticationInfo.newCounter;
await TwoFactor.save(tfa);
}
await this.enableSession(ctx);
return this.getLoginState(ctx);
}
}