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"use strict";
const uuidv4 = require("uuid/v4");
const nodemailer = require("nodemailer");
const Claim = require("../utils/claim.js");
const Session = require("../types/Session.js");
const game_accounts = require("../utils/game_accounts.js");
const validate = require("../utils/validate.js");
const Identity = require("../types/Identity.js");
let transporter = nodemailer.createTransport({
sendmail: true,
newline: 'unix',
path: '/usr/sbin/sendmail'
});
const delete_session = async (req, res) => {
let token, session;
try {
[token, session] = validate.get_session(req, res);
} catch { return } // already handled
req.app.locals.cooldown(1e4); // cooldown no matter what
if (session === null) {
// session is already expired
res.status(200).json({
status: "success",
});
return;
}
req.app.locals.vault.login_log.create({
userId: session.vault,
action: "LOGOUT",
ip: req.ip,
});
req.app.locals.session.delete(token);
console.log(`Vault.session: invalidating session ${token} (logout) [${req.ip}]`);
res.status(200).json({
status: "success",
});
};
const auth_session = async (req, res) => {
let token, session;
try {
[token, session] = validate.get_raw_session(req, res);
} catch { return } // already handled
if (session === null) {
res.status(410).json({
status: "error",
error: "session expired",
session: {
expires: 0,
identity: null,
}
});
// max 3 attempts per 15 minutes
if (req.app.locals.brute.consume(req, 3, 9e5)) {
req.app.locals.cooldown(req, 1e3);
} else {
req.app.locals.logger.warn(`Vault.session: authentication request flood [${req.ip}]`);
req.app.locals.cooldown(req, 3.6e6);
}
return;
}
if (!validate.check_ip(req, session)) {
res.status(403).json({
status: "error",
error: "ip address mismatch",
session: {
expires: 0,
identity: null,
}
});
console.warn(`Vault.session: ip address mismatch <${session.vault}@vault> [${req.ip}]`);
req.app.locals.cooldown(req, 5e3);
return;
}
if (session.authenticated === true) {
// already authed, tell client
res.status(200).json({
status: "success",
session,
});
req.app.locals.cooldown(req, 500);
return;
}
let email;
try {
email = validate.get_email(req, res);
} catch { return } // already handled
if (email !== session.email) {
res.status(410).json({
status: "error",
error: "session expired",
session: {
expires: 0,
identity: null,
}
});
// max 3 attempts per 15 minutes
if (req.app.locals.brute.consume(req, 3, 9e5)) {
req.app.locals.cooldown(req, 1e3);
} else {
req.app.locals.logger.warn(`Vault.session: authentication request flood [${req.ip}]`);
req.app.locals.cooldown(req, 3.6e6);
}
return;
}
if (session.vault === null && session.identity === null) {
// this is a new account
const user = await req.app.locals.vault.login.create({});
req.app.locals.vault.login_log.create({
userId: user.id,
action: "CREATE",
ip: req.ip,
});
/** @type {Identity} */
const ident = await req.app.locals.vault.identity.create({
userId: user.id,
email: session.email,
});
req.app.locals.vault.identity_log.create({
userId: user.id,
identityId: ident.id,
action: "ADD",
ip: req.ip,
});
user.primaryIdentity = ident.id;
await user.save();
req.app.locals.logger.info(`Vault.session: created a new Vault account <${user.id}@vault> [${req.ip}]`);
await Claim.claim_accounts(req, session.email, user.id, session);
// update current session
session.vault = user.id;
session.identity = ident;
session.primaryIdentity = ident;
session.allowNonPrimary = user.allowNonPrimary;
session.strictIPCheck = user.strictIPCheck;
session.identities.push(ident);
} else {
if (session.identity !== session.primaryIdentity && !session.allowNonPrimary) {
// unexpected: a session was created when it shouldn't have been
res.status(403).json({
status: "error",
error: "illegal identity"
});
console.error(`Vault.session: dangling session [${req.ip}]`);
req.app.locals.session.delete(token);
req.app.locals.cooldown(req, 3e5);
return;
}
// invalidate any active session
for (const [key, sess] of req.app.locals.session) {
if (sess.vault === session.vault && key !== token) {
console.log(`Vault.session: invalidating token ${key}`);
req.app.locals.session.delete(key);
}
}
console.info(`Vault.session: accepted login <${session.vault}@vault> [${req.ip}]`);
}
req.app.locals.cooldown(req, 6e4);
// pre-cache the accounts and chars in the session cache
await game_accounts.get_legacy(req, session);
await game_accounts.get_evol(req, session);
// authenticate this session
session.authenticated = true;
req.app.locals.vault.login_log.create({
userId: session.vault,
action: "LOGIN",
ip: req.ip,
});
if (session.identity !== session.primaryIdentity) {
// user did not log in with their primary identity
if (session.primaryIdentity === null || session.primaryIdentity === undefined) {
// the vault account has no primary identity (bug): let's fix this
console.warn(`Vault.session: fixing account with a deleted primary identity <${session.vault}@vault> [${req.ip}]`);
await req.app.locals.vault.login.update({
primaryIdentity: session.identity.id,
}, {where: {
id: session.vault,
}});
session.primaryIdentity = session.identity;
} else {
transporter.sendMail({
from: process.env.VAULT__MAILER__FROM,
to: session.primaryIdentity.email,
subject: "The Mana World security notice",
text: "Someone has logged in to your Vault account using an email address that " +
"is not your primary address. If this wasn't you, please contact us immediately.\n\n" +
"To stop receiving login notices, use your primary email address when logging in."
}, (err, info) => {});
}
}
// immediately change the session uuid
const new_uuid = uuidv4();
req.app.locals.session.set(new_uuid, session);
req.app.locals.session.delete(token); // revoke the old uuid
res.status(200).json({
status: "success",
session: {
key: new_uuid,
secret: session.secret, // give them the session secret (only shared once)
expires: session.expires,
identity: session.identity.id,
},
});
};
const new_session = async (req, res, next) => {
let email;
try {
email = validate.get_email(req, res);
} catch { return } // already handled
/** @type {Identity} */
const identity = await req.app.locals.vault.identity.findOne({where: {email: email}});
if (identity === null) {
// never logged in with this email address
const confirm = validate.get_prop(req, "confirm");
if (confirm) {
// account creation request
let uuid;
do { // avoid collisions
uuid = uuidv4();
} while (req.app.locals.session.get(uuid));
const session = new Session(req.ip, email);
req.app.locals.session.set(uuid, session);
console.log(`Vault.session: starting account creation process [${req.ip}]`);
if (process.env.NODE_ENV === "development") {
console.log(`uuid: ${uuid}`);
} else {
transporter.sendMail({
from: process.env.VAULT__MAILER__FROM,
to: email,
subject: "The Mana World account creation",
text: "You are receiving this email because someone (you?) has requested to link your email address "+
"to a new TMW Vault account.\nIf you did not initiate this process, please ignore this email.\n\n"+
"To confirm, use this link:\n" + `${process.env.VAULT__URL__AUTH}${uuid}`
}, (err, info) => {});
}
res.status(200).json({
status: "success"
});
// max 5 attempts per 15 minutes
if (req.app.locals.brute.consume(req, 5, 9e5)) {
req.app.locals.cooldown(req, 6e4);
} else {
req.app.locals.logger.warn(`Vault.session: account creation request flood [${req.ip}]`);
req.app.locals.cooldown(req, 3.6e6);
}
return;
} else {
res.status(202).json({
status: "pending",
});
// max 5 attempts per 15 minutes
if (req.app.locals.brute.consume(req, 5, 9e5)) {
req.app.locals.cooldown(req, 1e3);
} else {
req.app.locals.logger.warn(`Vault.session: email check flood [${req.ip}]`);
req.app.locals.cooldown(req, 3.6e6);
}
return;
}
} else {
const account = await req.app.locals.vault.login.findByPk(identity.userId);
if (account === null) {
// unexpected: the account was deleted but not its identities
console.log(`Vault.session: removing dangling identity [${req.ip}]`);
await identity.destroy();
res.status(409).json({
status: "error",
error: "data conflict",
});
req.app.locals.cooldown(req, 3e5);
return;
} else {
/** @type {Identity} */
let primary = null;
if (identity.id !== account.primaryIdentity) {
try {
primary = await req.app.locals.vault.identity.findByPk(account.primaryIdentity);
} catch {}
} else {
primary = identity;
}
// auth flow
if (primary === null) {
// the vault account has no primary identity (bug): let's fix this
console.warn(`Vault.session: fixing account with no primary identity <${account.id}@vault> [${req.ip}]`);
account.primaryIdentity = identity.id;
primary = identity;
await account.save();
} else if (identity.id !== primary.id && !account.allowNonPrimary) {
res.status(423).json({
status: "error",
error: "non-primary login is disabled",
});
req.app.locals.cooldown(5e3);
return;
}
// TODO: if account has WebAuthn do WebAuthn authentication flow
let uuid;
do { // avoid collisions
uuid = uuidv4();
} while (req.app.locals.session.get(uuid));
const session = new Session(req.ip, email);
session.vault = account.id;
session.primaryIdentity = primary;
session.allowNonPrimary = account.allowNonPrimary;
session.strictIPCheck = account.strictIPCheck;
session.identity = identity;
req.app.locals.session.set(uuid, session);
console.log(`Vault.session: starting authentication with identity ${identity.id} [${req.ip}]`);
if (process.env.NODE_ENV === "development") {
if (process.env.VAULT__BYPASS_LOGIN === "bypass") {
// don't require copy-pasting the uuid
res.status(200).json({
status: "success",
key: uuid,
});
} else {
console.log(`uuid: ${uuid}`);
}
return;
} else {
transporter.sendMail({
from: process.env.VAULT__MAILER__FROM,
to: email,
subject: "TMW Vault login",
text: `Here is your login link:\n${process.env.VAULT__URL__AUTH}${uuid}\n\n` +
"TMW staff members will never ask for your login link. Please do not " +
"share it with anyone."
}, (err, info) => {});
}
res.status(200).json({
status: "success"
});
req.app.locals.cooldown(req, 6e4);
}
}
};
module.exports = exports = async (req, res, next) => {
switch(req.method) {
case "GET":
// authenticate a session
return await auth_session(req, res, next);
case "PUT":
// request a new session
return await new_session(req, res, next);
case "DELETE":
// explicit log out
return await delete_session(req, res, next);
default:
next(); // fallthrough to default endpoint (404)
}
};
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