581 lines
12 KiB
JavaScript
581 lines
12 KiB
JavaScript
/* jslint node: true */
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'use strict';
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var userDb = require('./database.js').dbs.user;
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var Config = require('./config.js').config;
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var crypto = require('crypto');
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var assert = require('assert');
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var async = require('async');
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var _ = require('lodash');
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exports.User = User;
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exports.getUserIdAndName = getUserIdAndName;
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exports.createNew = createNew;
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exports.persistAll = persistAll;
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//exports.authenticate = authenticate;
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function User() {
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var self = this;
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this.userId = 0;
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this.username = '';
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this.properties = {};
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this.isValid = function() {
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if(self.userId <= 0 || self.username.length < 2) {
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return false;
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}
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return this.hasValidPassword();
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};
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this.hasValidPassword = function() {
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if(!this.properties || !this.properties.pw_pbkdf2_salt || !this.properties.pw_pbkdf2_dk) {
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return false;
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}
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return this.properties.pw_pbkdf2_salt.length === User.PBKDF2.saltLen * 2 &&
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this.prop_name.pw_pbkdf2_dk.length === User.PBKDF2.keyLen * 2;
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};
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this.isRoot = function() {
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return 1 === this.userId;
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};
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this.isSysOp = this.isRoot; // alias
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}
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User.PBKDF2 = {
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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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User.StandardPropertyGroups = {
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password : [ 'pw_pbkdf2_salt', 'pw_pbkdf2_dk' ],
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};
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User.AccountStatus = {
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disabled : -1,
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inactive : 0,
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active : 1,
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};
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User.prototype.authenticate = function(username, password, cb) {
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var self = this;
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var cachedInfo = {};
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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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getUserIdAndName(username, function onUserId(err, uid, un) {
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cachedInfo.userId = uid;
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cachedInfo.username = un;
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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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loadProperties( { userId : cachedInfo.userId, names : User.StandardPropertyGroups.password }, function onProps(err, props) {
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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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generatePasswordDerivedKey(password, props.pw_pbkdf2_salt, function onDk(err, dk) {
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callback(err, dk, props.pw_pbkdf2_dk);
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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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var passDkBuf = new Buffer(passDk, 'hex');
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var propsDkBuf = new Buffer(propsDk, 'hex');
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if(passDkBuf.length !== propsDkBuf.length) {
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callback(new Error('Invalid password'));
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return;
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}
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var c = 0;
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for(var i = 0; i < passDkBuf.length; i++) {
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c |= passDkBuf[i] ^ propsDkBuf[i];
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}
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callback(0 === c ? null : new Error('Invalid password'));
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},
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function initProps(callback) {
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loadProperties({ userId : cachedInfo.userId }, function onProps(err, allProps) {
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if(!err) {
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cachedInfo.properties = allProps;
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}
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callback(err);
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});
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}
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],
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function complete(err) {
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if(!err) {
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self.userId = cachedInfo.userId;
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self.username = cachedInfo.username;
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self.properties = cachedInfo.properties;
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self.authenticated = true;
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}
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cb(err);
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}
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);
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};
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function 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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function onResults(err, row) {
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if(err) {
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cb(err);
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} else {
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if(row) {
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cb(null, row.id, row.user_name);
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} else {
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cb(new Error('No matching username'));
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}
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}
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}
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);
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}
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User.prototype.create = function(options, cb) {
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assert(0 === this.userId);
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assert(this.username.length > 0); // :TODO: Min username length? Max?
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assert(_.isObject(options));
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assert(_.isString(options.password));
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var self = this;
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// :TODO: set various defaults, e.g. default activation status, etc.
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self.properties.account_status = Config.users.requireActivation ? User.AccountStatus.inactive : User.AccountStatus.active;
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async.series(
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[
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function beginTransaction(callback) {
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userDb.run('BEGIN;', function transBegin(err) {
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callback(err);
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});
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},
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function createUserRec(callback) {
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userDb.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 userInsert(err) {
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if(err) {
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callback(err);
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} else {
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self.userId = this.lastID;
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// Do not SGRValuesre activation for userId 1 (root/admin)
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if(1 === self.userId) {
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self.properties.account_status = User.AccountStatus.active;
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}
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callback(null);
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}
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}
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);
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},
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function genAuthCredentials(callback) {
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generatePasswordDerivedKeyAndSalt(options.password, function dkAndSalt(err, info) {
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if(err) {
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callback(err);
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} else {
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self.properties.pw_pbkdf2_salt = info.salt;
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self.properties.pw_pbkdf2_dk = info.dk;
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callback(null);
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}
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});
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},
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function saveAll(callback) {
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self.persist(false, function persisted(err) {
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callback(err);
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});
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}
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],
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function complete(err) {
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if(err) {
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var originalError = err;
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userDb.run('ROLLBACK;', function rollback(err) {
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assert(!err);
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cb(originalError);
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});
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} else {
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userDb.run('COMMIT;', function commited(err) {
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cb(err);
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});
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}
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}
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);
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};
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User.prototype.persist = function(useTransaction, cb) {
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assert(this.userId > 0);
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var self = this;
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async.series(
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[
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function beginTransaction(callback) {
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if(useTransaction) {
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userDb.run('BEGIN;', function transBegin(err) {
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callback(err);
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});
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} else {
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callback(null);
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}
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},
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function saveProps(callback) {
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persistProperties(self, function persisted(err) {
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callback(err);
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});
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}
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],
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function complete(err) {
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if(err) {
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if(useTransaction) {
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userDb.run('ROLLBACK;', function rollback(err) {
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cb(err);
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});
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} else {
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cb(err);
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}
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} else {
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if(useTransaction) {
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userDb.run('COMMIT;', function commited(err) {
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cb(err);
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});
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} else {
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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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User.prototype.persistProperties = function(cb) {
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assert(this.userId > 0);
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var self = this;
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var stmt = userDb.prepare(
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'REPLACE INTO user_property (user_id, prop_name, prop_value) ' +
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'VALUES (?, ?, ?);');
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async.each(Object.keys(this.properties), function property(propName, callback) {
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stmt.run(self.userId, propName, self.properties[propName], function onRun(err) {
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callback(err);
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});
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}, function complete(err) {
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if(err) {
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cb(err);
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} else {
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stmt.finalize(function finalized() {
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cb(null);
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});
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}
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});
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};
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function createNew(user, cb) {
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assert(user.username && user.username.length > 1, 'Invalid userName');
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async.series(
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[
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function beginTransaction(callback) {
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userDb.run('BEGIN;', function onBegin(err) {
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callback(err);
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});
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},
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function createUserRec(callback) {
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userDb.run(
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'INSERT INTO user (user_name) ' +
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'VALUES (?);',
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[ user.username ],
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function onUserInsert(err) {
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if(err) {
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callback(err);
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} else {
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user.userId = this.lastID;
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callback(null);
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}
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}
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);
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},
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function genPasswordDkAndSaltIfRequired(callback) {
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if(user.password && user.password.length > 0) {
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generatePasswordDerivedKeyAndSalt(user.password, function onDkAndSalt(err, info) {
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if(err) {
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callback(err);
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} else {
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user.properties = user.properties || {};
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user.properties.pw_pbkdf2_salt = info.salt;
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user.properties.pw_pbkdf2_dk = info.dk;
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callback(null);
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}
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});
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} else {
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callback(null);
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}
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},
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function saveAll(callback) {
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persistAll(user, false, function onPersisted(err) {
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callback(err);
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});
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}
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],
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function onComplete(err) {
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if(err) {
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var originalError = err;
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userDb.run('ROLLBACK;', function onRollback(err) {
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assert(!err);
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cb(originalError);
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});
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} else {
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userDb.run('COMMIT;', function onCommit(err) {
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if(err) {
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cb(err);
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} else {
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cb(null, user.userId);
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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 generatePasswordDerivedKeyAndSalt(password, cb) {
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async.waterfall(
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[
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function getSalt(callback) {
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generatePasswordDerivedKeySalt(function onSalt(err, salt) {
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callback(err, salt);
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});
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},
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function getDk(salt, callback) {
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generatePasswordDerivedKey(password, salt, function onDk(err, dk) {
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callback(err, salt, dk);
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});
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}
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],
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function onComplete(err, salt, dk) {
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cb(err, { salt : salt, dk : dk });
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}
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);
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}
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function generatePasswordDerivedKeySalt(cb) {
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crypto.randomBytes(User.PBKDF2.saltLen, function onRandSalt(err, salt) {
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if(err) {
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cb(err);
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} else {
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cb(null, salt.toString('hex'));
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}
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});
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}
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function generatePasswordDerivedKey(password, salt, cb) {
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password = new Buffer(password).toString('hex');
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crypto.pbkdf2(password, salt, User.PBKDF2.iterations, User.PBKDF2.keyLen, function onDerivedKey(err, dk) {
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if(err) {
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cb(err);
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} else {
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cb(null, dk.toString('hex'));
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}
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});
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}
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function persistProperties(user, cb) {
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assert(user.userId > 0);
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var stmt = userDb.prepare(
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'REPLACE INTO user_property (user_id, prop_name, prop_value) ' +
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'VALUES (?, ?, ?);');
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async.each(Object.keys(user.properties), function onProp(propName, callback) {
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stmt.run(user.userId, propName, user.properties[propName], function onRun(err) {
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callback(err);
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});
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}, function onComplete(err) {
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if(err) {
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cb(err);
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} else {
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stmt.finalize(function onFinalized() {
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cb(null);
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});
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}
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});
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}
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function loadProperties(options, cb) {
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assert(options.userId);
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var sql =
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'SELECT prop_name, prop_value ' +
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'FROM user_property ' +
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'WHERE user_id = ?';
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if(options.names) {
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sql +=' AND prop_name IN("' + options.names.join('","') + '");';
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} else {
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sql += ';';
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}
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var properties = {};
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userDb.each(sql, [ options.userId ], function onRow(err, row) {
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if(err) {
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cb(err);
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return;
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} else {
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properties[row.prop_name] = row.prop_value;
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}
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}, function complete() {
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cb(null, properties);
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});
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}
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/*function getProperties(userId, propNames, cb) {
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var properties = {};
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async.each(propNames, function onPropName(propName, next) {
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userDb.get(
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'SELECT prop_value ' +
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'FROM user_property ' +
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'WHERE user_id = ? AND prop_name = ?;',
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[ userId, propName ],
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function onRow(err, row) {
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if(err) {
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next(err);
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} else {
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if(row) {
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properties[propName] = row.prop_value;
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next();
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} else {
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next(new Error('No property "' + propName + '" for user ' + userId));
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}
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}
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}
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);
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}, function complete(err) {
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if(err) {
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cb(err);
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} else {
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cb(null, properties);
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}
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});
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}
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*/
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function persistAll(user, useTransaction, cb) {
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assert(user.userId > 0);
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async.series(
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[
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function beginTransaction(callback) {
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if(useTransaction) {
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userDb.run('BEGIN;', function onBegin(err) {
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callback(err);
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});
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} else {
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callback(null);
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}
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},
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function saveProps(callback) {
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persistProperties(user, function onPropPersist(err) {
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callback(err);
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});
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}
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],
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function onComplete(err) {
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if(err) {
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if(useTransaction) {
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userDb.run('ROLLBACK;', function onRollback(err) {
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cb(err);
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});
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} else {
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cb(err);
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}
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} else {
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if(useTransaction) {
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userDb.run('COMMIT;', function onCommit(err) {
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cb(err);
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});
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} else {
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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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|
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/*
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function authenticate(userName, password, client, cb) {
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assert(client);
|
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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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getUserIdAndName(userName, function onUserId(err, userId) {
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callback(err, userId);
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});
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},
|
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|
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function getRequiredAuthProperties(userId, callback) {
|
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// fetch properties required for authentication
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getProperties(userId, User.StandardPropertyGroups.password, function onProps(err, props) {
|
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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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generatePasswordDerivedKey(password, props.pw_pbkdf2_salt, function onDk(err, dk) {
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callback(err, dk, props.pw_pbkdf2_dk);
|
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});
|
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}
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],
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function validateAuth(err, passDk, propsDk) {
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if(err) {
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cb(err);
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} else {
|
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//
|
|
// Use constant time comparison here for security feel-goods
|
|
//
|
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var passDkBuf = new Buffer(passDk, 'hex');
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var propsDkBuf = new Buffer(propsDk, 'hex');
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|
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if(passDkBuf.length !== propsDkBuf.length) {
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cb(false);
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return;
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}
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var c = 0;
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for(var i = 0; i < passDkBuf.length; i++) {
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c |= passDkBuf[i] ^ propsDkBuf[i];
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}
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cb(0 === c ? null : new Error('Invalid password'));
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}
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}
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);
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}
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*/ |