387 lines
14 KiB
JavaScript
387 lines
14 KiB
JavaScript
/* jslint node: true */
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'use strict';
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// ENiGMA½
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const Config = require('./config.js').get;
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const Errors = require('./enig_error.js').Errors;
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const getServer = require('./listening_server.js').getServer;
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const webServerPackageName = require('./servers/content/web.js').moduleInfo.packageName;
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const { WellKnownLocations } = require('./servers/content/web');
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const User = require('./user.js');
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const userDb = require('./database.js').dbs.user;
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const getISOTimestampString = require('./database.js').getISOTimestampString;
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const Log = require('./logger.js').log;
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const UserProps = require('./user_property.js');
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const { buildUrl } = require('./web_util');
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// deps
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const async = require('async');
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const crypto = require('crypto');
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const fs = require('graceful-fs');
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const url = require('url');
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const querystring = require('querystring');
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const _ = require('lodash');
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const PW_RESET_EMAIL_TEXT_TEMPLATE_DEFAULT = `%USERNAME%:
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A password reset has been requested for your account on %BOARDNAME%.
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* If this was not you, please ignore this email.
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* Otherwise, follow this link: %RESET_URL%
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`;
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function getWebServer() {
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return getServer(webServerPackageName);
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}
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class WebPasswordReset {
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static startup(cb) {
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WebPasswordReset.registerRoutes(err => {
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return cb(err);
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});
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}
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static sendForgotPasswordEmail(username, cb) {
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const webServer = getServer(webServerPackageName);
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if (!webServer || !webServer.instance.isEnabled()) {
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return cb(Errors.General('Web server is not enabled'));
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}
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async.waterfall(
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[
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function getEmailAddress(callback) {
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if (!username) {
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return callback(Errors.MissingParam('Missing "username"'));
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}
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User.getUserIdAndName(username, (err, userId) => {
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if (err) {
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return callback(err);
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}
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User.getUser(userId, (err, user) => {
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if (err || !user.properties[UserProps.EmailAddress]) {
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return callback(
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Errors.DoesNotExist(
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'No email address associated with this user'
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)
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);
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}
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return callback(null, user);
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});
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});
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},
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function generateAndStoreResetToken(user, callback) {
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//
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// Reset "token" is simply HEX encoded cryptographically generated bytes
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//
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crypto.randomBytes(256, (err, token) => {
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if (err) {
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return callback(err);
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}
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token = token.toString('hex');
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const newProperties = {
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[UserProps.EmailPwResetToken]: token,
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[UserProps.EmailPwResetTokenTs]: getISOTimestampString(),
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};
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// we simply place the reset token in the user's properties
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user.persistProperties(newProperties, err => {
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return callback(err, user);
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});
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});
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},
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function getEmailTemplates(user, callback) {
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const config = Config();
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fs.readFile(
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config.contentServers.web.resetPassword.resetPassEmailText,
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'utf8',
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(err, textTemplate) => {
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if (err) {
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textTemplate = PW_RESET_EMAIL_TEXT_TEMPLATE_DEFAULT;
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}
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fs.readFile(
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config.contentServers.web.resetPassword
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.resetPassEmailHtml,
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'utf8',
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(err, htmlTemplate) => {
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return callback(
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null,
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user,
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textTemplate,
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htmlTemplate
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);
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}
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);
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}
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);
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},
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function buildAndSendEmail(user, textTemplate, htmlTemplate, callback) {
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const sendMail = require('./email.js').sendMail;
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const resetUrl = buildUrl(
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WellKnownLocations.Internal +
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`/sec/reset_password?token=${
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user.properties[UserProps.EmailPwResetToken]
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}`
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);
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function replaceTokens(s) {
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return s
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.replace(/%BOARDNAME%/g, Config().general.boardName)
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.replace(/%USERNAME%/g, user.username)
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.replace(
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/%TOKEN%/g,
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user.properties[UserProps.EmailPwResetToken]
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)
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.replace(/%RESET_URL%/g, resetUrl);
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}
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textTemplate = replaceTokens(textTemplate);
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if (htmlTemplate) {
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htmlTemplate = replaceTokens(htmlTemplate);
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}
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const message = {
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to: `${user.properties[UserProps.RealName] || user.username} <${
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user.properties[UserProps.EmailAddress]
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}>`,
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// from will be filled in
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subject: 'Forgot Password',
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text: textTemplate,
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html: htmlTemplate,
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};
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sendMail(message, (err, info) => {
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if (err) {
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Log.warn(
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{ error: err.message },
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'Failed sending password reset email'
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);
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} else {
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Log.info(
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{ info: info },
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'Successfully sent password reset email'
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);
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}
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return callback(err);
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});
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},
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],
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err => {
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return cb(err);
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}
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);
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}
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static scheduleEvents(cb) {
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// :TODO: schedule ~daily cleanup task
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return cb(null);
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}
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static registerRoutes(cb) {
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const webServer = getWebServer();
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if (!webServer) {
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return cb(null); // no webserver enabled
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}
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if (!webServer.instance.isEnabled()) {
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return cb(null); // no error, but we're not serving web stuff
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}
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[
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{
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// this is the page displayed to user when they GET it
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method: 'GET',
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path: /^\/_enig\/sec\/reset_password\?token=[a-f0-9]+$/,
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handler: WebPasswordReset.routeResetPasswordGet,
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},
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// POST handler for performing the actual reset
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{
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method: 'POST',
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path: /^\/_enig\/sec\/reset_password$/,
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handler: WebPasswordReset.routeResetPasswordPost,
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},
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].forEach(r => {
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webServer.instance.addRoute(r);
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});
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return cb(null);
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}
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static fileNotFound(webServer, resp) {
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return webServer.instance.fileNotFound(resp);
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}
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static accessDenied(webServer, resp) {
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return webServer.instance.accessDenied(resp);
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}
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static getUserByToken(token, cb) {
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async.waterfall(
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[
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function validateToken(callback) {
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User.getUserIdsWithProperty(
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'email_password_reset_token',
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token,
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(err, userIds) => {
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if (userIds && userIds.length === 1) {
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return callback(null, userIds[0]);
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}
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return callback(
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Errors.Invalid('Invalid password reset token')
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);
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}
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);
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},
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function getUser(userId, callback) {
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User.getUser(userId, (err, user) => {
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return callback(null, user);
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});
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},
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],
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(err, user) => {
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return cb(err, user);
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}
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);
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}
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static routeResetPasswordGet(req, resp) {
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const webServer = getWebServer(); // must be valid, we just got a req!
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const urlParts = url.parse(req.url, true);
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const token = urlParts.query && urlParts.query.token;
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if (!token) {
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return WebPasswordReset.accessDenied(webServer, resp);
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}
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WebPasswordReset.getUserByToken(token, (err, user) => {
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if (err) {
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// assume it's expired
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return webServer.instance.respondWithError(
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resp,
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410,
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'Invalid or expired reset link.',
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'Expired Link'
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);
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}
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const postResetUrl = buildUrl(
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WellKnownLocations.Internal + '/sec/reset_password'
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);
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const config = Config();
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return webServer.instance.routeTemplateFilePage(
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config.contentServers.web.resetPassword.resetPageTemplate,
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(templateData, preprocessFinished) => {
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const finalPage = templateData
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.replace(/%BOARDNAME%/g, config.general.boardName)
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.replace(/%USERNAME%/g, user.username)
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.replace(/%TOKEN%/g, token)
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.replace(/%RESET_URL%/g, postResetUrl);
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return preprocessFinished(null, finalPage);
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},
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resp
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);
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});
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}
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static routeResetPasswordPost(req, resp) {
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const webServer = getWebServer(); // must be valid, we just got a req!
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let bodyData = '';
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req.on('data', data => {
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bodyData += data;
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});
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function badRequest() {
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return webServer.instance.respondWithError(
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resp,
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400,
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'Bad Request.',
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'Bad Request'
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);
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}
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req.on('end', () => {
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const formData = querystring.parse(bodyData);
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const config = Config();
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if (
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!formData.token ||
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!formData.password ||
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!formData.confirm_password ||
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formData.password !== formData.confirm_password ||
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formData.password.length < config.users.passwordMin ||
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formData.password.length > config.users.passwordMax
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) {
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return badRequest();
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}
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WebPasswordReset.getUserByToken(formData.token, (err, user) => {
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if (err) {
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return badRequest();
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}
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user.setNewAuthCredentials(formData.password, err => {
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if (err) {
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return badRequest();
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}
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// delete assoc properties - no need to wait for completion
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user.removeProperties([
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UserProps.EmailPwResetToken,
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UserProps.EmailPwResetTokenTs,
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]);
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if (true === _.get(config, 'users.unlockAtEmailPwReset')) {
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Log.info(
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{ username: user.username, userId: user.userId },
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'Remove any lock on account due to password reset policy'
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);
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user.unlockAccount(() => {
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/* dummy */
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});
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}
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resp.writeHead(200);
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return resp.end('Password changed successfully');
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});
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});
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});
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}
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}
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function performMaintenanceTask(args, cb) {
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const forgotPassExpireTime = args[0] || '24 hours';
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// remove all reset token associated properties older than |forgotPassExpireTime|
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userDb.run(
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`DELETE FROM user_property
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WHERE user_id IN (
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SELECT user_id
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FROM user_property
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WHERE prop_name = "email_password_reset_token_ts"
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AND DATETIME("now") >= DATETIME(prop_value, "+${forgotPassExpireTime}")
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) AND prop_name IN ("email_password_reset_token_ts", "email_password_reset_token");`,
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err => {
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if (err) {
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Log.warn(
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{ error: err.message },
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'Failed deleting old email reset tokens'
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);
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}
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return cb(err);
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}
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);
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}
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exports.WebPasswordReset = WebPasswordReset;
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exports.performMaintenanceTask = performMaintenanceTask;
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