sync/src/web/account.js
2022-09-23 21:39:38 -07:00

758 lines
22 KiB
JavaScript

/**
* web/account.js - Webserver details for account management
*
* @author Calvin Montgomery <cyzon@cyzon.us>
*/
var webserver = require("./webserver");
var sendPug = require("./pug").sendPug;
var Logger = require("../logger");
var db = require("../database");
var $util = require("../utilities");
var Config = require("../config");
var session = require("../session");
var csrf = require("./csrf");
const url = require("url");
import crypto from 'crypto';
const LOGGER = require('@calzoneman/jsli')('web/accounts');
let globalMessageBus;
let emailConfig;
let emailController;
/**
* Handles a GET request for /account/edit
*/
function handleAccountEditPage(req, res) {
sendPug(res, "account-edit", {});
}
function verifyReferrer(req, expected) {
const referrer = req.header('referer');
if (!referrer) {
return true;
}
try {
const parsed = url.parse(referrer);
if (parsed.pathname !== expected) {
LOGGER.warn(
'Possible attempted forgery: %s POSTed to %s',
referrer,
expected
);
return false;
}
return true;
} catch (error) {
return false;
}
}
/**
* Handles a POST request to edit a user"s account
*/
function handleAccountEdit(req, res) {
csrf.verify(req);
if (!verifyReferrer(req, '/account/edit')) {
res.status(403).send('Mismatched referrer');
return;
}
var action = req.body.action;
switch(action) {
case "change_password":
handleChangePassword(req, res);
break;
case "change_email":
handleChangeEmail(req, res);
break;
default:
res.sendStatus(400);
break;
}
}
/**
* Handles a request to change the user"s password
*/
async function handleChangePassword(req, res) {
var name = req.body.name;
var oldpassword = req.body.oldpassword;
var newpassword = req.body.newpassword;
if (typeof name !== "string" ||
typeof oldpassword !== "string" ||
typeof newpassword !== "string") {
res.send(400);
return;
}
if (newpassword.length === 0) {
sendPug(res, "account-edit", {
errorMessage: "New password must not be empty"
});
return;
}
const reqUser = await webserver.authorize(req);
if (!reqUser) {
sendPug(res, "account-edit", {
errorMessage: "You must be logged in to change your password"
});
return;
}
newpassword = newpassword.substring(0, 100);
db.users.verifyLogin(name, oldpassword, function (err, _user) {
if (err) {
sendPug(res, "account-edit", {
errorMessage: err
});
return;
}
db.users.setPassword(name, newpassword, function (err, _dbres) {
if (err) {
sendPug(res, "account-edit", {
errorMessage: err
});
return;
}
Logger.eventlog.log("[account] " + req.realIP +
" changed password for " + name);
db.users.getUser(name, function (err, user) {
if (err) {
return sendPug(res, "account-edit", {
errorMessage: err
});
}
var expiration = new Date(parseInt(req.signedCookies.auth.split(":")[1]));
session.genSession(user, expiration, function (err, auth) {
if (err) {
return sendPug(res, "account-edit", {
errorMessage: err
});
}
webserver.setAuthCookie(req, res, expiration, auth);
sendPug(res, "account-edit", {
successMessage: "Password changed."
});
});
});
});
});
}
/**
* Handles a request to change the user"s email
*/
function handleChangeEmail(req, res) {
var name = req.body.name;
var password = req.body.password;
var email = req.body.email;
if (typeof name !== "string" ||
typeof password !== "string" ||
typeof email !== "string") {
res.send(400);
return;
}
if (!$util.isValidEmail(email) && email !== "") {
sendPug(res, "account-edit", {
errorMessage: "Invalid email address"
});
return;
}
db.users.verifyLogin(name, password, function (err, _user) {
if (err) {
sendPug(res, "account-edit", {
errorMessage: err
});
return;
}
db.users.setEmail(name, email, function (err, _dbres) {
if (err) {
sendPug(res, "account-edit", {
errorMessage: err
});
return;
}
Logger.eventlog.log("[account] " + req.realIP +
" changed email for " + name +
" to " + email);
sendPug(res, "account-edit", {
successMessage: "Email address changed."
});
});
});
}
/**
* Handles a GET request for /account/channels
*/
async function handleAccountChannelPage(req, res) {
const user = await webserver.authorize(req);
// TODO: error message
if (!user) {
return sendPug(res, "account-channels", {
channels: []
});
}
db.channels.listUserChannels(user.name, function (err, channels) {
sendPug(res, "account-channels", {
channels: channels
});
});
}
/**
* Handles a POST request to modify a user"s channels
*/
function handleAccountChannel(req, res) {
csrf.verify(req);
if (!verifyReferrer(req, '/account/channels')) {
res.status(403).send('Mismatched referrer');
return;
}
var action = req.body.action;
switch(action) {
case "new_channel":
handleNewChannel(req, res);
break;
case "delete_channel":
handleDeleteChannel(req, res);
break;
default:
res.send(400);
break;
}
}
/**
* Handles a request to register a new channel
*/
async function handleNewChannel(req, res) {
var name = req.body.name;
if (typeof name !== "string") {
res.send(400);
return;
}
const user = await webserver.authorize(req);
// TODO: error message
if (!user) {
return sendPug(res, "account-channels", {
channels: []
});
}
let banInfo = await db.channels.getBannedChannel(name);
db.channels.listUserChannels(user.name, function (err, channels) {
if (err) {
sendPug(res, "account-channels", {
channels: [],
newChannelError: err
});
return;
}
if (banInfo !== null) {
sendPug(res, "account-channels", {
channels: channels,
newChannelError: `Cannot register "${name}": this channel is banned.`
});
return;
}
if (name.match(Config.get("reserved-names.channels"))) {
sendPug(res, "account-channels", {
channels: channels,
newChannelError: "That channel name is reserved"
});
return;
}
if (channels.length >= Config.get("max-channels-per-user")
&& user.global_rank < 255) {
sendPug(res, "account-channels", {
channels: channels,
newChannelError: "You are not allowed to register more than " +
Config.get("max-channels-per-user") + " channels."
});
return;
}
db.channels.register(name, user.name, function (err, _channel) {
if (!err) {
Logger.eventlog.log("[channel] " + user.name + "@" +
req.realIP +
" registered channel " + name);
globalMessageBus.emit('ChannelRegistered', {
channel: name
});
channels.push({
name: name
});
}
sendPug(res, "account-channels", {
channels: channels,
newChannelError: err ? err : undefined
});
});
});
}
/**
* Handles a request to delete a new channel
*/
async function handleDeleteChannel(req, res) {
var name = req.body.name;
if (typeof name !== "string") {
res.send(400);
return;
}
const user = await webserver.authorize(req);
// TODO: error
if (!user) {
return sendPug(res, "account-channels", {
channels: [],
});
}
db.channels.lookup(name, function (err, channel) {
if (err) {
sendPug(res, "account-channels", {
channels: [],
deleteChannelError: err
});
return;
}
if ((!channel.owner || channel.owner.toLowerCase() !== user.name.toLowerCase()) && user.global_rank < 255) {
db.channels.listUserChannels(user.name, function (err2, channels) {
sendPug(res, "account-channels", {
channels: err2 ? [] : channels,
deleteChannelError: "You do not have permission to delete this channel"
});
});
return;
}
db.channels.drop(name, function (err) {
if (!err) {
Logger.eventlog.log("[channel] " + user.name + "@" +
req.realIP + " deleted channel " +
name);
}
globalMessageBus.emit('ChannelDeleted', {
channel: name
});
db.channels.listUserChannels(user.name, function (err2, channels) {
sendPug(res, "account-channels", {
channels: err2 ? [] : channels,
deleteChannelError: err ? err : undefined
});
});
});
});
}
/**
* Handles a GET request for /account/profile
*/
async function handleAccountProfilePage(req, res) {
const user = await webserver.authorize(req);
// TODO: error message
if (!user) {
return sendPug(res, "account-profile", {
profileImage: "",
profileText: ""
});
}
db.users.getProfile(user.name, function (err, profile) {
if (err) {
sendPug(res, "account-profile", {
profileError: err,
profileImage: "",
profileText: ""
});
return;
}
sendPug(res, "account-profile", {
profileImage: profile.image,
profileText: profile.text,
profileError: false
});
});
}
function validateProfileImage(image, callback) {
var prefix = "Invalid URL for profile image: ";
var link = image.trim();
if (!link) {
process.nextTick(callback, null, link);
} else {
var data = url.parse(link);
if (!data.protocol || data.protocol !== 'https:') {
process.nextTick(callback,
new Error(prefix + " URL must begin with 'https://'"));
} else if (!data.host) {
process.nextTick(callback,
new Error(prefix + "missing hostname"));
} else {
process.nextTick(callback, null, link);
}
}
}
/**
* Handles a POST request to edit a profile
*/
async function handleAccountProfile(req, res) {
csrf.verify(req);
if (!verifyReferrer(req, '/account/profile')) {
res.status(403).send('Mismatched referrer');
return;
}
const user = await webserver.authorize(req);
// TODO: error message
if (!user) {
return sendPug(res, "account-profile", {
profileImage: "",
profileText: "",
profileError: "You must be logged in to edit your profile",
});
}
var rawImage = String(req.body.image).substring(0, 255);
var text = String(req.body.text).substring(0, 255);
validateProfileImage(rawImage, (error, image) => {
if (error) {
db.users.getProfile(user.name, function (err, profile) {
var errorMessage = err || error.message;
sendPug(res, "account-profile", {
profileImage: profile ? profile.image : "",
profileText: profile ? profile.text : "",
profileError: errorMessage
});
});
return;
}
db.users.setProfile(user.name, { image: image, text: text }, function (err) {
if (err) {
sendPug(res, "account-profile", {
profileImage: "",
profileText: "",
profileError: err
});
return;
}
globalMessageBus.emit('UserProfileChanged', {
user: user.name,
profile: {
image,
text
}
});
sendPug(res, "account-profile", {
profileImage: image,
profileText: text,
profileError: false
});
});
});
}
/**
* Handles a GET request for /account/passwordreset
*/
function handlePasswordResetPage(req, res) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: false
});
}
/**
* Handles a POST request to reset a user's password
*/
function handlePasswordReset(req, res) {
csrf.verify(req);
if (!verifyReferrer(req, '/account/passwordreset')) {
res.status(403).send('Mismatched referrer');
return;
}
var name = req.body.name,
email = req.body.email;
if (typeof name !== "string" || typeof email !== "string") {
res.send(400);
return;
}
if (!$util.isValidUserName(name)) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: "Invalid username '" + name + "'"
});
return;
}
db.users.getEmail(name, function (err, actualEmail) {
if (err) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: err
});
return;
}
if (actualEmail === '') {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: `Username ${name} cannot be recovered because it ` +
"doesn't have an email address associated with it."
});
return;
} else if (actualEmail.toLowerCase() !== email.trim().toLowerCase()) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: "Provided email does not match the email address on record for " + name
});
return;
}
crypto.randomBytes(20, (err, bytes) => {
if (err) {
LOGGER.error(
'Could not generate random bytes for password reset: %s',
err.stack
);
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: email,
resetErr: "Internal error when generating password reset"
});
return;
}
var hash = bytes.toString('hex');
// 24-hour expiration
var expire = Date.now() + 86400000;
var ip = req.realIP;
db.addPasswordReset({
ip: ip,
name: name,
email: actualEmail,
hash: hash,
expire: expire
}, function (err, _dbres) {
if (err) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: "",
resetErr: err
});
return;
}
Logger.eventlog.log("[account] " + ip + " requested password recovery for " +
name + " <" + email + ">");
if (!emailConfig.getPasswordReset().isEnabled()) {
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: email,
resetErr: "This server does not have mail support enabled. Please " +
"contact an administrator for assistance."
});
return;
}
const baseUrl = `${req.realProtocol}://${req.header("host")}`;
emailController.sendPasswordReset({
username: name,
address: email,
url: `${baseUrl}/account/passwordrecover/${hash}`
}).then(_result => {
sendPug(res, "account-passwordreset", {
reset: true,
resetEmail: email,
resetErr: false
});
}).catch(error => {
LOGGER.error("Sending password reset email failed: %s", error);
sendPug(res, "account-passwordreset", {
reset: false,
resetEmail: email,
resetErr: "Sending reset email failed. Please contact an " +
"administrator for assistance."
});
});
});
});
});
}
/**
* Handles a request for /account/passwordrecover/<hash>
*/
function handleGetPasswordRecover(req, res) {
var hash = req.params.hash;
if (typeof hash !== "string") {
res.send(400);
return;
}
db.lookupPasswordReset(hash, function (err, row) {
if (err) {
sendPug(res, "account-passwordrecover", {
recovered: false,
recoverErr: err
});
return;
}
if (Date.now() >= row.expire) {
sendPug(res, "account-passwordrecover", {
recovered: false,
recoverErr: "This password recovery link has expired. Password " +
"recovery links are valid only for 24 hours after " +
"submission."
});
return;
}
sendPug(res, "account-passwordrecover", {
confirm: true,
recovered: false
});
});
}
/**
* Handles a POST request for /account/passwordrecover/<hash>
*/
function handlePostPasswordRecover(req, res) {
var hash = req.params.hash;
if (typeof hash !== "string") {
res.send(400);
return;
}
var ip = req.realIP;
db.lookupPasswordReset(hash, function (err, row) {
if (err) {
sendPug(res, "account-passwordrecover", {
recovered: false,
recoverErr: err
});
return;
}
if (Date.now() >= row.expire) {
sendPug(res, "account-passwordrecover", {
recovered: false,
recoverErr: "This password recovery link has expired. Password " +
"recovery links are valid only for 24 hours after " +
"submission."
});
return;
}
var newpw = "";
const avail = "abcdefgihkmnpqrstuvwxyz0123456789";
for (var i = 0; i < 10; i++) {
newpw += avail[Math.floor(Math.random() * avail.length)];
}
db.users.setPassword(row.name, newpw, function (err) {
if (err) {
sendPug(res, "account-passwordrecover", {
recovered: false,
recoverErr: "Database error. Please contact an administrator if " +
"this persists."
});
return;
}
db.deletePasswordReset(hash);
Logger.eventlog.log("[account] " + ip + " recovered password for " + row.name);
sendPug(res, "account-passwordrecover", {
recovered: true,
recoverPw: newpw
});
});
});
}
module.exports = {
/**
* Initialize the module
*/
init: function (app, _globalMessageBus, _emailConfig, _emailController) {
globalMessageBus = _globalMessageBus;
emailConfig = _emailConfig;
emailController = _emailController;
app.get("/account/edit", handleAccountEditPage);
app.post("/account/edit", handleAccountEdit);
app.get("/account/channels", handleAccountChannelPage);
app.post("/account/channels", handleAccountChannel);
app.get("/account/profile", handleAccountProfilePage);
app.post("/account/profile", handleAccountProfile);
app.get("/account/passwordreset", handlePasswordResetPage);
app.post("/account/passwordreset", handlePasswordReset);
app.get("/account/passwordrecover/:hash", handleGetPasswordRecover);
app.post("/account/passwordrecover/:hash", handlePostPasswordRecover);
app.get("/account", function (req, res) {
res.redirect("/login");
});
}
};