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import Koa from 'koa';
import bcrypt from 'bcryptjs';
import * as speakeasy from 'speakeasy';
import signin from '../common/signin.js';
import config from '@/config/index.js';
import { Users, Signins, UserProfiles, UserSecurityKeys, AttestationChallenges } from '@/models/index.js';
import { ILocalUser } from '@/models/entities/user.js';
import { genId } from '@/misc/gen-id.js';
import { verifyLogin, hash } from '../2fa.js';
import { randomBytes } from 'node:crypto';
import { IsNull } from 'typeorm';
import { limiter } from '../limiter.js';
import { getIpHash } from '@/misc/get-ip-hash.js';
export default async (ctx: Koa.Context) => {
ctx.set('Access-Control-Allow-Origin', config.url);
ctx.set('Access-Control-Allow-Credentials', 'true');
const body = ctx.request.body as any;
const username = body['username'];
const password = body['password'];
const token = body['token'];
function error(status: number, error: { id: string }) {
ctx.status = status;
ctx.body = { error };
}
try {
// not more than 1 attempt per second and not more than 10 attempts per hour
await limiter({ key: 'signin', duration: 60 * 60 * 1000, max: 10, minInterval: 1000 }, getIpHash(ctx.ip));
} catch (err) {
ctx.status = 429;
ctx.body = {
error: {
message: 'Too many failed attempts to sign in. Try again later.',
code: 'TOO_MANY_AUTHENTICATION_FAILURES',
id: '22d05606-fbcf-421a-a2db-b32610dcfd1b',
},
};
return;
}
if (typeof username !== 'string') {
ctx.status = 400;
return;
}
if (typeof password !== 'string') {
ctx.status = 400;
return;
}
if (token != null && typeof token !== 'string') {
ctx.status = 400;
return;
}
// Fetch user
const user = await Users.findOneBy({
usernameLower: username.toLowerCase(),
host: IsNull(),
}) as ILocalUser;
if (user == null) {
error(404, {
id: '6cc579cc-885d-43d8-95c2-b8c7fc963280',
});
return;
}
if (user.isSuspended) {
error(403, {
id: 'e03a5f46-d309-4865-9b69-56282d94e1eb',
});
return;
}
const profile = await UserProfiles.findOneByOrFail({ userId: user.id });
// Compare password
const same = await bcrypt.compare(password, profile.password!);
async function fail(status?: number, failure?: { id: string }) {
// Append signin history
await Signins.insert({
id: genId(),
createdAt: new Date(),
userId: user.id,
ip: ctx.ip,
headers: ctx.headers,
success: false,
});
error(status || 500, failure || { id: '4e30e80c-e338-45a0-8c8f-44455efa3b76' });
}
if (!profile.twoFactorEnabled) {
if (same) {
signin(ctx, user);
return;
} else {
await fail(403, {
id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
});
return;
}
}
if (token) {
if (!same) {
await fail(403, {
id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
});
return;
}
const verified = (speakeasy as any).totp.verify({
secret: profile.twoFactorSecret,
encoding: 'base32',
token: token,
window: 2,
});
if (verified) {
signin(ctx, user);
return;
} else {
await fail(403, {
id: 'cdf1235b-ac71-46d4-a3a6-84ccce48df6f',
});
return;
}
} else if (body.credentialId) {
if (!same && !profile.usePasswordLessLogin) {
await fail(403, {
id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
});
return;
}
const clientDataJSON = Buffer.from(body.clientDataJSON, 'hex');
const clientData = JSON.parse(clientDataJSON.toString('utf-8'));
const challenge = await AttestationChallenges.findOneBy({
userId: user.id,
id: body.challengeId,
registrationChallenge: false,
challenge: hash(clientData.challenge).toString('hex'),
});
if (!challenge) {
await fail(403, {
id: '2715a88a-2125-4013-932f-aa6fe72792da',
});
return;
}
await AttestationChallenges.delete({
userId: user.id,
id: body.challengeId,
});
if (new Date().getTime() - challenge.createdAt.getTime() >= 5 * 60 * 1000) {
await fail(403, {
id: '2715a88a-2125-4013-932f-aa6fe72792da',
});
return;
}
const securityKey = await UserSecurityKeys.findOneBy({
id: Buffer.from(
body.credentialId
.replace(/-/g, '+')
.replace(/_/g, '/'),
'base64'
).toString('hex'),
});
if (!securityKey) {
await fail(403, {
id: '66269679-aeaf-4474-862b-eb761197e046',
});
return;
}
const isValid = verifyLogin({
publicKey: Buffer.from(securityKey.publicKey, 'hex'),
authenticatorData: Buffer.from(body.authenticatorData, 'hex'),
clientDataJSON,
clientData,
signature: Buffer.from(body.signature, 'hex'),
challenge: challenge.challenge,
});
if (isValid) {
signin(ctx, user);
return;
} else {
await fail(403, {
id: '93b86c4b-72f9-40eb-9815-798928603d1e',
});
return;
}
} else {
if (!same && !profile.usePasswordLessLogin) {
await fail(403, {
id: '932c904e-9460-45b7-9ce6-7ed33be7eb2c',
});
return;
}
const keys = await UserSecurityKeys.findBy({
userId: user.id,
});
if (keys.length === 0) {
await fail(403, {
id: 'f27fd449-9af4-4841-9249-1f989b9fa4a4',
});
return;
}
// 32 byte challenge
const challenge = randomBytes(32).toString('base64')
.replace(/=/g, '')
.replace(/\+/g, '-')
.replace(/\//g, '_');
const challengeId = genId();
await AttestationChallenges.insert({
userId: user.id,
id: challengeId,
challenge: hash(Buffer.from(challenge, 'utf-8')).toString('hex'),
createdAt: new Date(),
registrationChallenge: false,
});
ctx.body = {
challenge,
challengeId,
securityKeys: keys.map(key => ({
id: key.id,
})),
};
ctx.status = 200;
return;
}
// never get here
};
|
