784 lines
26 KiB
JavaScript
784 lines
26 KiB
JavaScript
/* jslint node: true */
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'use strict';
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// ENiGMA½
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const userDb = require('./database.js').dbs.user;
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const Config = require('./config.js').get;
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const userGroup = require('./user_group.js');
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const {
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Errors,
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ErrorReasons
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} = require('./enig_error.js');
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const Events = require('./events.js');
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const UserProps = require('./user_property.js');
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const Log = require('./logger.js').log;
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const StatLog = require('./stat_log.js');
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// deps
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const crypto = require('crypto');
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const assert = require('assert');
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const async = require('async');
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const _ = require('lodash');
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const moment = require('moment');
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exports.isRootUserId = function(id) { return 1 === id; };
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module.exports = class User {
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constructor() {
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this.userId = 0;
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this.username = '';
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this.properties = {}; // name:value
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this.groups = []; // group membership(s)
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}
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// static property accessors
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static get RootUserID() {
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return 1;
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}
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static get PBKDF2() {
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return {
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iterations : 1000,
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keyLen : 128,
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saltLen : 32,
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};
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}
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static get StandardPropertyGroups() {
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return {
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password : [ UserProps.PassPbkdf2Salt, UserProps.PassPbkdf2Dk ],
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};
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}
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static get AccountStatus() {
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return {
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disabled : 0, // +op disabled
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inactive : 1, // inactive, aka requires +op approval/activation
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active : 2, // standard, active
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locked : 3, // locked out (too many bad login attempts, etc.)
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};
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}
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static isSamePasswordSlowCompare(passBuf1, passBuf2) {
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if(passBuf1.length !== passBuf2.length) {
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return false;
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}
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let c = 0;
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for(let i = 0; i < passBuf1.length; i++) {
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c |= passBuf1[i] ^ passBuf2[i];
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}
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return 0 === c;
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}
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isAuthenticated() {
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return true === this.authenticated;
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}
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isValid() {
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if(this.userId <= 0 || this.username.length < Config().users.usernameMin) {
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return false;
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}
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return this.hasValidPasswordProperties();
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}
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hasValidPasswordProperties() {
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const salt = this.getProperty(UserProps.PassPbkdf2Salt);
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const dk = this.getProperty(UserProps.PassPbkdf2Dk);
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if(!salt || !dk ||
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(salt.length !== User.PBKDF2.saltLen * 2) ||
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(dk.length !== User.PBKDF2.keyLen * 2))
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{
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return false;
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}
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return true;
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}
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isRoot() {
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return User.isRootUserId(this.userId);
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}
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isSysOp() { // alias to isRoot()
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return this.isRoot();
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}
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isGroupMember(groupNames) {
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if(_.isString(groupNames)) {
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groupNames = [ groupNames ];
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}
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const isMember = groupNames.some(gn => (-1 !== this.groups.indexOf(gn)));
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return isMember;
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}
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getLegacySecurityLevel() {
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if(this.isRoot() || this.isGroupMember('sysops')) {
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return 100;
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}
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if(this.isGroupMember('users')) {
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return 30;
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}
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return 10; // :TODO: Is this what we want?
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}
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processFailedLogin(userId, cb) {
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async.waterfall(
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[
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(callback) => {
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return User.getUser(userId, callback);
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},
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(tempUser, callback) => {
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return StatLog.incrementUserStat(
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tempUser,
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UserProps.FailedLoginAttempts,
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1,
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(err, failedAttempts) => {
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return callback(null, tempUser, failedAttempts);
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}
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);
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},
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(tempUser, failedAttempts, callback) => {
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const lockAccount = _.get(Config(), 'users.failedLogin.lockAccount');
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if(lockAccount > 0 && failedAttempts >= lockAccount) {
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const props = {
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[ UserProps.AccountStatus ] : User.AccountStatus.locked,
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[ UserProps.AccountLockedTs ] : StatLog.now,
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};
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if(!_.has(tempUser.properties, UserProps.AccountLockedPrevStatus)) {
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props[UserProps.AccountLockedPrevStatus] = tempUser.getProperty(UserProps.AccountStatus);
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}
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Log.info( { userId, failedAttempts }, '(Re)setting account to locked due to failed logins');
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return tempUser.persistProperties(props, callback);
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}
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return cb(null);
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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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unlockAccount(cb) {
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const prevStatus = this.getProperty(UserProps.AccountLockedPrevStatus);
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if(!prevStatus) {
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return cb(null); // nothing to do
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}
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this.persistProperty(UserProps.AccountStatus, prevStatus, err => {
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if(err) {
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return cb(err);
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}
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return this.removeProperties( [ UserProps.AccountLockedPrevStatus, UserProps.AccountLockedTs ], cb);
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});
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}
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authenticate(username, password, cb) {
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const self = this;
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const tempAuthInfo = {};
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async.waterfall(
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[
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function fetchUserId(callback) {
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// get user ID
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User.getUserIdAndName(username, (err, uid, un) => {
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tempAuthInfo.userId = uid;
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tempAuthInfo.username = un;
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return callback(err);
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});
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},
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function getRequiredAuthProperties(callback) {
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// fetch properties required for authentication
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User.loadProperties(tempAuthInfo.userId, { names : User.StandardPropertyGroups.password }, (err, props) => {
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return callback(err, props);
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});
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},
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function getDkWithSalt(props, callback) {
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// get DK from stored salt and password provided
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User.generatePasswordDerivedKey(password, props[UserProps.PassPbkdf2Salt], (err, dk) => {
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return callback(err, dk, props[UserProps.PassPbkdf2Dk]);
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});
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},
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function validateAuth(passDk, propsDk, callback) {
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//
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// Use constant time comparison here for security feel-goods
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//
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const passDkBuf = Buffer.from(passDk, 'hex');
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const propsDkBuf = Buffer.from(propsDk, 'hex');
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return callback(User.isSamePasswordSlowCompare(passDkBuf, propsDkBuf) ?
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null :
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Errors.AccessDenied('Invalid password')
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);
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},
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function initProps(callback) {
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User.loadProperties(tempAuthInfo.userId, (err, allProps) => {
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if(!err) {
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tempAuthInfo.properties = allProps;
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}
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return callback(err);
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});
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},
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function checkAccountStatus(callback) {
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const accountStatus = parseInt(tempAuthInfo.properties[UserProps.AccountStatus], 10);
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if(User.AccountStatus.disabled === accountStatus) {
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return callback(Errors.AccessDenied('Account disabled', ErrorReasons.Disabled));
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}
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if(User.AccountStatus.inactive === accountStatus) {
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return callback(Errors.AccessDenied('Account inactive', ErrorReasons.Inactive));
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}
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if(User.AccountStatus.locked === accountStatus) {
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const autoUnlockMinutes = _.get(Config(), 'users.failedLogin.autoUnlockMinutes');
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const lockedTs = moment(tempAuthInfo.properties[UserProps.AccountLockedTs]);
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if(autoUnlockMinutes && lockedTs.isValid()) {
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const minutesSinceLocked = moment().diff(lockedTs, 'minutes');
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if(minutesSinceLocked >= autoUnlockMinutes) {
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// allow the login - we will clear any lock there
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Log.info(
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{ username, userId : tempAuthInfo.userId, lockedAt : lockedTs.format() },
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'Locked account will now be unlocked due to auto-unlock minutes policy'
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);
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return callback(null);
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}
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}
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return callback(Errors.AccessDenied('Account is locked', ErrorReasons.Locked));
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}
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// anything else besides active is still not allowed
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if(User.AccountStatus.active !== accountStatus) {
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return callback(Errors.AccessDenied('Account is not active'));
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}
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return callback(null);
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},
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function initGroups(callback) {
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userGroup.getGroupsForUser(tempAuthInfo.userId, (err, groups) => {
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if(!err) {
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tempAuthInfo.groups = groups;
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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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if(err) {
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//
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// If we failed login due to something besides an inactive or disabled account,
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// we need to update failure status and possibly lock the account.
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//
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// If locked already, update the lock timestamp -- ie, extend the lockout period.
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//
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if(![ErrorReasons.Disabled, ErrorReasons.Inactive].includes(err.reasonCode) && tempAuthInfo.userId) {
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self.processFailedLogin(tempAuthInfo.userId, persistErr => {
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if(persistErr) {
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Log.warn( { error : persistErr.message }, 'Failed to persist failed login information');
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}
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return cb(err); // pass along original error
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});
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} else {
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return cb(err);
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}
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} else {
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// everything checks out - load up info
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self.userId = tempAuthInfo.userId;
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self.username = tempAuthInfo.username;
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self.properties = tempAuthInfo.properties;
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self.groups = tempAuthInfo.groups;
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self.authenticated = true;
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self.removeProperty(UserProps.FailedLoginAttempts);
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//
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// We need to *revert* any locked status back to
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// the user's previous status & clean up props.
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//
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self.unlockAccount(unlockErr => {
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if(unlockErr) {
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Log.warn( { error : unlockErr.message }, 'Failed to unlock account');
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}
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return cb(null);
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});
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}
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}
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);
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}
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create(createUserInfo , cb) {
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assert(0 === this.userId);
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const config = Config();
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if(this.username.length < config.users.usernameMin || this.username.length > config.users.usernameMax) {
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return cb(Errors.Invalid('Invalid username length'));
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}
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const self = this;
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// :TODO: set various defaults, e.g. default activation status, etc.
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self.properties[UserProps.AccountStatus] = config.users.requireActivation ? User.AccountStatus.inactive : User.AccountStatus.active;
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async.waterfall(
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[
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function beginTransaction(callback) {
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return userDb.beginTransaction(callback);
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},
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function createUserRec(trans, callback) {
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trans.run(
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`INSERT INTO user (user_name)
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VALUES (?);`,
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[ self.username ],
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function inserted(err) { // use classic function for |this|
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if(err) {
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return callback(err);
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}
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self.userId = this.lastID;
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// Do not require activation for userId 1 (root/admin)
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if(User.RootUserID === self.userId) {
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self.properties[UserProps.AccountStatus] = User.AccountStatus.active;
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}
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return callback(null, trans);
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}
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);
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},
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function genAuthCredentials(trans, callback) {
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User.generatePasswordDerivedKeyAndSalt(createUserInfo.password, (err, info) => {
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if(err) {
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return callback(err);
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}
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self.properties[UserProps.PassPbkdf2Salt] = info.salt;
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self.properties[UserProps.PassPbkdf2Dk] = info.dk;
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return callback(null, trans);
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});
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},
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function setInitialGroupMembership(trans, callback) {
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self.groups = config.users.defaultGroups;
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if(User.RootUserID === self.userId) { // root/SysOp?
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self.groups.push('sysops');
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}
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return callback(null, trans);
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},
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function saveAll(trans, callback) {
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self.persistWithTransaction(trans, err => {
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return callback(err, trans);
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});
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},
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function sendEvent(trans, callback) {
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Events.emit(
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Events.getSystemEvents().NewUser,
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{
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user : Object.assign({}, self, { sessionId : createUserInfo.sessionId } )
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}
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);
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return callback(null, trans);
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}
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],
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(err, trans) => {
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if(trans) {
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trans[err ? 'rollback' : 'commit'](transErr => {
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return cb(err ? err : transErr);
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});
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} else {
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return cb(err);
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}
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}
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);
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}
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persistWithTransaction(trans, cb) {
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assert(this.userId > 0);
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const self = this;
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async.series(
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[
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function saveProps(callback) {
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self.persistProperties(self.properties, trans, err => {
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return callback(err);
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});
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},
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function saveGroups(callback) {
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userGroup.addUserToGroups(self.userId, self.groups, trans, err => {
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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 persistPropertyByUserId(userId, propName, propValue, cb) {
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userDb.run(
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`REPLACE INTO user_property (user_id, prop_name, prop_value)
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VALUES (?, ?, ?);`,
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[ userId, propName, propValue ],
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err => {
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if(cb) {
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return cb(err, propValue);
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}
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}
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);
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}
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getProperty(propName) {
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return this.properties[propName];
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}
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getPropertyAsNumber(propName) {
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return parseInt(this.getProperty(propName), 10);
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}
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persistProperty(propName, propValue, cb) {
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// update live props
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this.properties[propName] = propValue;
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return User.persistPropertyByUserId(this.userId, propName, propValue, cb);
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}
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removeProperty(propName, cb) {
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// update live
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delete this.properties[propName];
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userDb.run(
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`DELETE FROM user_property
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WHERE user_id = ? AND prop_name = ?;`,
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[ this.userId, propName ],
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err => {
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if(cb) {
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return cb(err);
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}
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}
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);
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}
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removeProperties(propNames, cb) {
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async.each(propNames, (name, next) => {
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return this.removeProperty(name, next);
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},
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err => {
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if(cb) {
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return cb(err);
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}
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});
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}
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persistProperties(properties, transOrDb, cb) {
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if(!_.isFunction(cb) && _.isFunction(transOrDb)) {
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cb = transOrDb;
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transOrDb = userDb;
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}
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const self = this;
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// update live props
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_.merge(this.properties, properties);
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const stmt = transOrDb.prepare(
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`REPLACE INTO user_property (user_id, prop_name, prop_value)
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VALUES (?, ?, ?);`
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);
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async.each(Object.keys(properties), (propName, nextProp) => {
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stmt.run(self.userId, propName, properties[propName], err => {
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return nextProp(err);
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});
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},
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err => {
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if(err) {
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return cb(err);
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}
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stmt.finalize( () => {
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return cb(null);
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});
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});
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}
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setNewAuthCredentials(password, cb) {
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User.generatePasswordDerivedKeyAndSalt(password, (err, info) => {
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if(err) {
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return cb(err);
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}
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const newProperties = {
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[ UserProps.PassPbkdf2Salt ] : info.salt,
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[ UserProps.PassPbkdf2Dk ] : info.dk,
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};
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this.persistProperties(newProperties, err => {
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return cb(err);
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});
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});
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}
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getAge() {
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const birthdate = this.getProperty(UserProps.Birthdate);
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if(birthdate) {
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return moment().diff(birthdate, 'years');
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}
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}
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static getUser(userId, cb) {
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async.waterfall(
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[
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function fetchUserId(callback) {
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User.getUserName(userId, (err, userName) => {
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return callback(null, userName);
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});
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},
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function initProps(userName, callback) {
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User.loadProperties(userId, (err, properties) => {
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return callback(err, userName, properties);
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});
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},
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function initGroups(userName, properties, callback) {
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userGroup.getGroupsForUser(userId, (err, groups) => {
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return callback(null, userName, properties, groups);
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});
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}
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],
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(err, userName, properties, groups) => {
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const user = new User();
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user.userId = userId;
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user.username = userName;
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user.properties = properties;
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user.groups = groups;
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user.authenticated = false; // this is NOT an authenticated 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 isRootUserId(userId) {
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return (User.RootUserID === userId);
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}
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|
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static getUserIdAndName(username, cb) {
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userDb.get(
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`SELECT id, user_name
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FROM user
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WHERE user_name LIKE ?;`,
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|
[ username ],
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|
(err, row) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
if(row) {
|
|
return cb(null, row.id, row.user_name);
|
|
}
|
|
|
|
return cb(Errors.DoesNotExist('No matching username'));
|
|
}
|
|
);
|
|
}
|
|
|
|
static getUserIdAndNameByRealName(realName, cb) {
|
|
userDb.get(
|
|
`SELECT id, user_name
|
|
FROM user
|
|
WHERE id = (
|
|
SELECT user_id
|
|
FROM user_property
|
|
WHERE prop_name='${UserProps.RealName}' AND prop_value LIKE ?
|
|
);`,
|
|
[ realName ],
|
|
(err, row) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
if(row) {
|
|
return cb(null, row.id, row.user_name);
|
|
}
|
|
|
|
return cb(Errors.DoesNotExist('No matching real name'));
|
|
}
|
|
);
|
|
}
|
|
|
|
static getUserIdAndNameByLookup(lookup, cb) {
|
|
User.getUserIdAndName(lookup, (err, userId, userName) => {
|
|
if(err) {
|
|
User.getUserIdAndNameByRealName(lookup, (err, userId, userName) => {
|
|
return cb(err, userId, userName);
|
|
});
|
|
} else {
|
|
return cb(null, userId, userName);
|
|
}
|
|
});
|
|
}
|
|
|
|
static getUserName(userId, cb) {
|
|
userDb.get(
|
|
`SELECT user_name
|
|
FROM user
|
|
WHERE id = ?;`,
|
|
[ userId ],
|
|
(err, row) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
if(row) {
|
|
return cb(null, row.user_name);
|
|
}
|
|
|
|
return cb(Errors.DoesNotExist('No matching user ID'));
|
|
}
|
|
);
|
|
}
|
|
|
|
static loadProperties(userId, options, cb) {
|
|
if(!cb && _.isFunction(options)) {
|
|
cb = options;
|
|
options = {};
|
|
}
|
|
|
|
let sql =
|
|
`SELECT prop_name, prop_value
|
|
FROM user_property
|
|
WHERE user_id = ?`;
|
|
|
|
if(options.names) {
|
|
sql += ` AND prop_name IN("${options.names.join('","')}");`;
|
|
} else {
|
|
sql += ';';
|
|
}
|
|
|
|
let properties = {};
|
|
userDb.each(sql, [ userId ], (err, row) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
properties[row.prop_name] = row.prop_value;
|
|
}, (err) => {
|
|
return cb(err, err ? null : properties);
|
|
});
|
|
}
|
|
|
|
// :TODO: make this much more flexible - propValue should allow for case-insensitive compare, etc.
|
|
static getUserIdsWithProperty(propName, propValue, cb) {
|
|
let userIds = [];
|
|
|
|
userDb.each(
|
|
`SELECT user_id
|
|
FROM user_property
|
|
WHERE prop_name = ? AND prop_value = ?;`,
|
|
[ propName, propValue ],
|
|
(err, row) => {
|
|
if(row) {
|
|
userIds.push(row.user_id);
|
|
}
|
|
},
|
|
() => {
|
|
return cb(null, userIds);
|
|
}
|
|
);
|
|
}
|
|
|
|
static getUserList(options, cb) {
|
|
const userList = [];
|
|
const orderClause = 'ORDER BY ' + (options.order || 'user_name');
|
|
|
|
userDb.each(
|
|
`SELECT id, user_name
|
|
FROM user
|
|
${orderClause};`,
|
|
(err, row) => {
|
|
if(row) {
|
|
userList.push({
|
|
userId : row.id,
|
|
userName : row.user_name,
|
|
});
|
|
}
|
|
},
|
|
() => {
|
|
options.properties = options.properties || [];
|
|
async.map(userList, (user, nextUser) => {
|
|
userDb.each(
|
|
`SELECT prop_name, prop_value
|
|
FROM user_property
|
|
WHERE user_id = ? AND prop_name IN ("${options.properties.join('","')}");`,
|
|
[ user.userId ],
|
|
(err, row) => {
|
|
if(row) {
|
|
if(options.propsCamelCase) {
|
|
user[_.camelCase(row.prop_name)] = row.prop_value;
|
|
} else {
|
|
user[row.prop_name] = row.prop_value;
|
|
}
|
|
}
|
|
},
|
|
err => {
|
|
return nextUser(err, user);
|
|
}
|
|
);
|
|
},
|
|
(err, transformed) => {
|
|
return cb(err, transformed);
|
|
});
|
|
}
|
|
);
|
|
}
|
|
|
|
static generatePasswordDerivedKeyAndSalt(password, cb) {
|
|
async.waterfall(
|
|
[
|
|
function getSalt(callback) {
|
|
User.generatePasswordDerivedKeySalt( (err, salt) => {
|
|
return callback(err, salt);
|
|
});
|
|
},
|
|
function getDk(salt, callback) {
|
|
User.generatePasswordDerivedKey(password, salt, (err, dk) => {
|
|
return callback(err, salt, dk);
|
|
});
|
|
}
|
|
],
|
|
(err, salt, dk) => {
|
|
return cb(err, { salt : salt, dk : dk } );
|
|
}
|
|
);
|
|
}
|
|
|
|
static generatePasswordDerivedKeySalt(cb) {
|
|
crypto.randomBytes(User.PBKDF2.saltLen, (err, salt) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
return cb(null, salt.toString('hex'));
|
|
});
|
|
}
|
|
|
|
static generatePasswordDerivedKey(password, salt, cb) {
|
|
password = Buffer.from(password).toString('hex');
|
|
|
|
crypto.pbkdf2(password, salt, User.PBKDF2.iterations, User.PBKDF2.keyLen, 'sha1', (err, dk) => {
|
|
if(err) {
|
|
return cb(err);
|
|
}
|
|
|
|
return cb(null, dk.toString('hex'));
|
|
});
|
|
}
|
|
};
|