'use strict'; const config = require('wild-config'); const log = require('npmlog'); const hashes = require('./hashes'); const speakeasy = require('speakeasy'); const QRCode = require('qrcode'); const tools = require('./tools'); const consts = require('./consts'); const counters = require('./counters'); const ObjectID = require('mongodb').ObjectID; const generatePassword = require('generate-password'); const os = require('os'); const crypto = require('crypto'); const mailboxTranslations = require('./translations'); const MailComposer = require('nodemailer/lib/mail-composer'); const humanname = require('humanname'); const u2f = require('u2f'); const UserCache = require('./user-cache'); const isemail = require('isemail'); const util = require('util'); const TOTP_SETUP_TTL = 6 * 3600 * 1000; class UserHandler { constructor(options) { this.database = options.database; this.users = options.users || options.database; this.redis = options.redis; this.loggelf = options.loggelf || (() => false); this.messageHandler = options.messageHandler; this.counters = this.messageHandler ? this.messageHandler.counters : counters(this.redis); this.userCache = new UserCache({ users: this.users, redis: this.redis }); this.flushUserCache = util.promisify(this.userCache.flush.bind(this.userCache)); if (!('authlogExpireDays' in options)) { this.authlogExpireDays = 30; } else { this.authlogExpireDays = options.authlogExpireDays; } } resolveAddress(address, options, callback) { if (!callback) { return this.asyncResolveAddress(address, options); } this.asyncResolveAddress(address, options) .catch(err => callback(err)) .then(result => callback(null, result)); } async asyncResolveAddress(address, options) { options = options || {}; let wildcard = !!options.wildcard; address = tools.normalizeAddress(address, false, { removeLabel: true, removeDots: true }); let atPos = address.indexOf('@'); let username = address.substr(0, atPos); let domain = address.substr(atPos + 1); let projection = { user: true, targets: true }; Object.keys(options.projection || {}).forEach(key => { projection[key] = true; }); if (options.projection === false) { // do not use projection projection = false; } try { let addressData; // try exact match addressData = await this.users.collection('addresses').findOne( { addrview: username + '@' + domain }, { projection, maxTimeMS: consts.DB_MAX_TIME_USERS } ); if (addressData) { return addressData; } // try an alias let aliasDomain; let aliasData = await this.users.collection('domainaliases').findOne( { alias: domain }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); if (aliasData) { aliasDomain = aliasData.domain; addressData = await this.users.collection('addresses').findOne( { addrview: username + '@' + aliasDomain }, { projection, maxTimeMS: consts.DB_MAX_TIME_USERS } ); if (addressData) { return addressData; } } if (!wildcard) { // wildcard not allowed, so there is nothing else to check for return false; } let partialWildcards = tools.getWildcardAddresses(username, domain); let query = { addrview: { $in: partialWildcards } }; let sortedDomainPartials = partialWildcards.map(addr => addr.replace(/^\*/, '')).sort((a, b) => b.lenght - a.length); let sortedAliasPartials = []; if (aliasDomain) { // search for alias domain as well let aliasWildcards = tools.getWildcardAddresses(username, aliasDomain); query.addrview.$in = query.addrview.$in.concat(aliasWildcards); sortedAliasPartials = aliasWildcards.map(addr => addr.replace(/^\*/, '')).sort((a, b) => a.lenght - b.length); } let sortedPartials = sortedDomainPartials.concat(sortedAliasPartials); // try to find a catch-all address while preferring the longest match let addressMatches = await this.users .collection('addresses') .find(query, { projection, maxTimeMS: consts.DB_MAX_TIME_USERS }) .toArray(); if (addressMatches && addressMatches.length) { let matchingPartials = new WeakMap(); addressMatches.forEach(addressData => { let partialMatch = sortedPartials.find(partial => addressData.addrview.indexOf(partial) >= 0); if (partialMatch) { matchingPartials.set(addressData, sortedPartials.indexOf(partialMatch)); } }); addressData = addressMatches.sort((a, b) => { let aPos = matchingPartials.has(a) ? matchingPartials.get(a) : Infinity; let bPos = matchingPartials.has(b) ? matchingPartials.get(b) : Infinity; return aPos - bPos; })[0]; } if (addressData) { return addressData; } // try to find a catch-all user (eg. "postmaster@*") addressData = await this.users.collection('addresses').findOne( { addrview: username + '@*' }, { projection, maxTimeMS: consts.DB_MAX_TIME_USERS } ); if (addressData) { return addressData; } } catch (err) { err.code = 'InternalDatabaseError'; throw err; } // no match was found return false; } /** * Resolve user by username/address * * @param {String} username Either username or email address * @param {Object} [extraFields] Optional projection fields object */ get(username, extraFields, callback) { if (!callback && typeof extraFields === 'function') { callback = extraFields; extraFields = false; } if (!callback) { return this.asyncGet(username, extraFields); } this.asyncGet(username, extraFields) .catch(err => callback(err)) .then(result => callback(null, result)); } async asyncGet(username, extraFields) { let fields = { _id: true, quota: true, storageUsed: true, disabled: true }; Object.keys(extraFields || {}).forEach(field => { fields[field] = true; }); let addressData; let query; if (tools.isId(username)) { query = { _id: new ObjectID(username) }; } else if (username.indexOf('@') < 0) { // assume regular username query = { unameview: tools.uview(username) }; } else { addressData = await this.asyncResolveAddress(username, { projection: { name: true } }); if (addressData.user) { query = { _id: addressData.user }; } } if (!query) { return false; } try { let userData = await this.users.collection('users').findOne(query, { projection: fields, maxTimeMS: consts.DB_MAX_TIME_USERS }); if (userData && fields.name && addressData && addressData.name) { // override name userData.name = addressData.name; } return userData; } catch (err) { err.code = 'InternalDatabaseError'; throw err; } } /** * rateLimitIP * if ip is not available will always return success object * @param {Object} meta * @param {String} meta.ip request remote ip address * @param {Integer} count */ async rateLimitIP(meta, count) { if (!meta || !meta.ip || !consts.IP_AUTH_FAILURES) { return { success: true }; } let wlKey = 'rl-wl'; // $ redis-cli // > SADD "rl-wl" "1.2.3.4" try { let isMember = await this.redis.sismember(wlKey, meta.ip); if (isMember) { // whitelisted IP return { success: true }; } } catch (err) { log.error('Redis', 'SMFAIL key=%s value=%s error=%s', wlKey, meta.ip, err.message); // ignore errors return { success: true }; } return await this.counters.asyncTTLCounter('auth_ip:' + meta.ip, count, consts.IP_AUTH_FAILURES, consts.IP_AUTH_WINDOW); } /** * rateLimitUser * @param {String} tokenID user identifier * @param {Object} meta * @param {Integer} count */ async rateLimitUser(tokenID, meta, count) { if (meta && meta.ip) { // check if whitelisted IP let wlKey = 'rl-wl'; // $ redis-cli // > SADD "rl-wl" "1.2.3.4" try { let isMember = await this.redis.sismember(wlKey, meta.ip); if (isMember) { // whitelisted IP, allow authentication attempt without rate limits return { success: true }; } } catch (err) { log.error('Redis', 'SMFAIL key=%s value=%s error=%s', wlKey, meta.ip, err.message); // ignore errors } } return await this.counters.asyncTTLCounter('auth_user:' + tokenID, count, consts.USER_AUTH_FAILURES, consts.USER_AUTH_WINDOW); } /** * rateLimitReleaseUser * @param {String} tokenID user identifier * @param {Integer} count */ async rateLimitReleaseUser(tokenID) { await this.redis.del('auth_user:' + tokenID); } /** * rateLimit * @param {String} tokenID user identifier * @param {Object} meta * @param {String} meta.ip request remote ip address * @param {Integer} count */ async rateLimit(tokenID, meta, count) { let ipRes = await this.rateLimitIP(meta, count); let userRes = await this.rateLimitUser(tokenID, meta, count); if (!ipRes.success) { return ipRes; } return userRes; } /** * Authenticate user * * @param {String} username Either username or email address * @param {String} password Password for authentication * @param {String} [requiredScope="master"] Which scope to use * @param {Object} [meta] Additional meta info * @param {String} [meta.ip] IP address of the client * @param {String} [meta.session] Session ID */ authenticate(username, password, requiredScope, meta, callback) { if (!callback) { return this.asyncAuthenticate(username, password, requiredScope, meta); } this.asyncAuthenticate(username, password, requiredScope, meta) .catch(err => callback(err)) .then(result => { if (!Array.isArray(result)) { result = [].concat(result || [false, false]); } callback(null, ...result); }); } async asyncAuthenticate(username, password, requiredScope, meta) { meta = meta || {}; requiredScope = requiredScope || 'master'; username = (username || '').toString(); let userDomain = username.indexOf('@') >= 0 ? username.split('@').pop() : ''; let now = new Date(); let passwordType = 'master'; // try 'master' first and 'asp' later let passwordId; meta = meta || {}; meta.requiredScope = requiredScope; if (!password) { // do not allow signing in without a password this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Empty password', _auth_result: 'fail', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); return [false, false]; } // first check if client IP is not used too much let rateLimitRes; try { rateLimitRes = await this.rateLimitIP(meta, 0); } catch (err) { err.code = 'InternalDatabaseError'; this.loggelf({ short_message: '[AUTHFAIL] ' + username, full_message: err.stack, _error: err.message, _code: err.code, _auth_result: 'error', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); // return as failed auth return [false, false]; } if (!rateLimitRes.success) { // too many failed attempts from this IP this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Rate limited', _auth_result: 'ratelimited', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); throw rateLimitResponse(rateLimitRes); } let userQuery; try { userQuery = await this.checkAddress(username); } catch (err) { this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Unknown user', _auth_result: 'unknown', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); return [false, false]; } if (!userQuery) { // nothing to do here return [false, false]; } let userData; try { userData = await this.users.collection('users').findOne(userQuery, { projection: { _id: true, username: true, address: true, tempPassword: true, password: true, enabled2fa: true, u2f: true, disabled: true, disabledScopes: true }, maxTimeMS: consts.DB_MAX_TIME_USERS }); } catch (err) { err.code = 'InternalDatabaseError'; this.loggelf({ short_message: '[AUTHFAIL] ' + username, full_message: err.stack, _error: err.message, _code: err.code, _auth_result: 'error', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); // return as failed auth return [false, false]; } if (!userData) { // User was not found // rate limit failed authentication attempts against non-existent users as well try { let ustring = (userQuery.unameview || userQuery._id || '').toString(); rateLimitRes = await this.rateLimit(ustring, meta, 1); } catch (err) { err.code = 'InternalDatabaseError'; this.loggelf({ short_message: '[AUTHFAIL] ' + username, full_message: err.stack, _error: err.message, _code: err.code, _auth_result: 'error', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); } if (!rateLimitRes.success) { // does not really matter but respond with a rate limit error, not auth fail error this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Rate limited', _auth_result: 'ratelimited', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); throw rateLimitResponse(rateLimitRes); } this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Unknown user', _auth_result: 'unknown', _username: username, _domain: userDomain, _scope: requiredScope, _ip: meta.ip }); // return as failed auth return [false, false]; } // make sure we use the primary domain if available userDomain = (userData.address || '').split('@').pop() || userDomain; try { // check if there are not too many auth attempts for that user rateLimitRes = await this.rateLimitUser(userData._id, meta, 0); } catch (err) { err.code = 'InternalDatabaseError'; err.user = userData._id; this.loggelf({ short_message: '[AUTHFAIL] ' + username, full_message: err.stack, _error: err.message, _code: err.code, _auth_result: 'error', _username: username, _domain: userDomain, _user: userData._id, _scope: requiredScope, _ip: meta.ip }); throw err; } if (!rateLimitRes.success) { // too many failed attempts for this user this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'Rate limited', _auth_result: 'ratelimited', _username: username, _domain: userDomain, _user: userData._id, _scope: requiredScope, _ip: meta.ip }); let err = rateLimitResponse(rateLimitRes); err.user = userData._id; throw err; } if (userData.disabled) { // disabled users can not log in meta.result = 'disabled'; // TODO: should we send some specific error message? this.loggelf({ short_message: '[AUTHFAIL] ' + username, _error: 'User is disabled', _auth_result: 'disabled', _username: username, _domain: userDomain, _user: userData._id, _scope: requiredScope, _ip: meta.ip }); await this.logAuthEvent(userData._id, meta); return [false, userData._id]; } try { let authSuccess = async authResponse => { // clear rate limit counter on success try { await this.rateLimitReleaseUser(userData._id); } catch (err) { //ignore } this.loggelf({ short_message: '[AUTHOK] ' + username, _auth_result: 'success', _username: username, _domain: userDomain, _user: userData._id, _password_type: passwordType, _password_id: passwordId, _scope: requiredScope, _ip: meta.ip }); return [authResponse, userData._id]; }; let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); let requirePasswordChange = false; let usingTemporaryPassword = false; let success; if (userData.tempPassword && userData.tempPassword.created > new Date(now.getTime() - consts.TEMP_PASS_WINDOW)) { // try temporary password first try { success = await hashes.compare(password, userData.tempPassword.password); } catch (err) { err.code = 'HashError'; throw err; } if (success) { if (userData.validAfter > now) { let err = new Error('Temporary password is not yet activated'); err.code = 'TempPasswordNotYetValid'; throw err; } requirePasswordChange = true; usingTemporaryPassword = true; } } if (!success) { // temporary password did not match, try actual password success = await hashes.compare(password, userData.password); } if (success) { // master password matched meta.result = 'success'; meta.source = !usingTemporaryPassword ? 'master' : 'temporary'; if (enabled2fa.length) { meta.require2fa = enabled2fa.length ? enabled2fa.join(',') : false; } if (hashes.shouldRehash(userData.password)) { // master password needs rehashing let hash; try { hash = await hashes.hash(password); if (hash) { // should this even happen??? throw new Error('Failed to rehash password'); } try { let r = await this.users.collection('users').updateOne( { _id: userData._id }, { $set: { password: hash } }, { w: 'majority' } ); if (r.modifiedCount) { log.info('DB', 'REHASHED user=%s algo=%s', userData._id, consts.DEFAULT_HASH_ALGO); } } catch (err) { log.error('DB', 'DBFAIL rehash user=%s error=%s', userData._id, err.message); } } catch (err) { log.error('DB', 'HASHFAIL rehash user=%s error=%s', userData._id, err.message); // ignore DB error, rehash some other time } } let disabledScopes = userData.disabledScopes || []; if (requiredScope !== 'master' && (enabled2fa.length || usingTemporaryPassword || disabledScopes.includes(requiredScope))) { // master password can not be used for other scopes than 'master' if 2FA is enabled // temporary password is also only valid for master meta.result = 'fail'; await this.logAuthEvent(userData._id, meta); let err = new Error('Authentication failed. Invalid scope'); err.code = 'InvalidAuthScope'; err.response = 'NO'; // imap response code throw err; } try { let authEvent = await this.logAuthEvent(userData._id, meta); await this.users.collection('users').updateOne( { _id: userData._id }, { $set: { lastLogin: { time: now, authEvent, ip: meta.ip } } }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { // ignore } let authResponse = { user: userData._id, username: userData.username, scope: meta.requiredScope, // if 2FA is enabled then require token validation require2fa: enabled2fa.length && !usingTemporaryPassword ? enabled2fa : false, requirePasswordChange // true, if password was reset and using temporary password }; if (enabled2fa.length && !usingTemporaryPassword) { authResponse.enabled2fa = enabled2fa; if (enabled2fa.includes('u2f') && userData.u2f && userData.u2f.keyHandle) { try { let u2fAuthRequest = await this.generateU2fAuthRequest(userData._id, userData.u2f.keyHandle, meta.appId); if (u2fAuthRequest) { authResponse.u2fAuthRequest = u2fAuthRequest; } } catch (err) { log.error('DB', 'U2FREFAIL u2fAuthRequest id=%s error=%s', userData._id, err.message); } } } return await authSuccess(authResponse); } if (requiredScope === 'master') { // only master password can be used for management tasks meta.result = 'fail'; meta.source = 'master'; await this.logAuthEvent(userData._id, meta); let err = new Error('Invalid Auth'); err.code = 'AuthFail'; // will be returned as failed auth, not an error throw err; } // try application specific passwords password = password.replace(/\s+/g, '').toLowerCase(); if (!/^[a-z]{16}$/.test(password)) { // does not look like an application specific password meta.result = 'fail'; meta.source = 'master'; await this.logAuthEvent(userData._id, meta); let err = new Error('Invalid Auth'); err.code = 'AuthFail'; // will be returned as failed auth, not an error throw err; } let selector = getStringSelector(password); let asps; try { asps = await this.users .collection('asps') .find({ user: userData._id }) .maxTimeMS(consts.DB_MAX_TIME_USERS) .toArray(); } catch (err) { err.code = 'InternalDatabaseError'; throw err; } if (!asps || !asps.length) { // user does not have app specific passwords set meta.result = 'fail'; meta.source = 'master'; await this.logAuthEvent(userData._id, meta); let err = new Error('Invalid Auth'); err.code = 'AuthFail'; // will be returned as failed auth, not an error throw err; } for (let asp of asps) { if (asp.selector && asp.selector !== selector) { // no need to check, definitely a wrong one continue; } let success; try { success = await hashes.compare(password, asp.password); } catch (err) { err.code = 'HashError'; throw err; } if (!success) { continue; } // Found a matching Application Specific Password meta.source = 'asp'; meta.asp = asp._id; // store ASP name in case the ASP gets deleted and for faster listing meta.aname = asp.description; passwordType = 'asp'; passwordId = asp._id.toString(); // Check if passwords scope matches required scope if (!asp.scopes.includes('*') && !asp.scopes.includes(requiredScope)) { meta.result = 'fail'; await this.logAuthEvent(userData._id, meta); let err = new Error('Authentication failed. Invalid scope'); err.code = 'InvalidAuthScope'; err.response = 'NO'; // imap response code throw err; } // Everything checked out meta.result = 'success'; let authEvent; try { authEvent = await this.logAuthEvent(userData._id, meta); } catch (err) { // don't really care } let aspUpdates = { used: now, authEvent, authIp: meta.ip }; if (asp.ttl) { // extend temporary password ttl every time it is used aspUpdates.expires = new Date(now.getTime() + asp.ttl * 1000); } try { await this.users.collection('asps').updateOne( { _id: asp._id }, { $set: aspUpdates }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { // ignore } return await authSuccess({ user: userData._id, username: userData.username, scope: requiredScope, asp: asp._id.toString(), require2fa: false // application scope never requires 2FA }); } // no suitable password found meta.result = 'fail'; meta.source = 'master'; await this.logAuthEvent(userData._id, meta); let err = new Error('Invalid Auth'); err.code = 'AuthFail'; // will be returned as failed auth, not an error throw err; } catch (err) { this.loggelf({ short_message: '[AUTHFAIL] ' + username, full_message: err.stack, _error: err.message || 'Authentication failed', _code: err.code, _auth_result: 'fail', _username: username, _domain: userDomain, _user: userData._id, _password_type: passwordType, _password_id: passwordId, _scope: requiredScope, _ip: meta.ip }); // increment rate limit counter on failure await this.rateLimit(userData._id, meta, 1); if (err.code !== 'AuthFail') { err.user = userData._id; throw err; } return [false, userData._id]; } } async generateU2fAuthRequest(user, keyHandle, appId) { let authRequest; try { authRequest = u2f.request(appId || config.u2f.appId, keyHandle); } catch (err) { log.error('U2F', 'U2FFAIL request id=%s error=%s', user, err.message); } if (!authRequest) { return false; } try { let results = await this.redis .multi() .set('u2f:auth:' + user, JSON.stringify(authRequest)) .expire('u2f:auth:' + user, 1 * 3600) .exec(); if (!results || !results[0]) { throw new Error('Invalid DB response'); } else if (results && results[0] && results[0][0]) { throw typeof results[0][0] !== 'object' ? new Error(results[0][0]) : results[0][0]; } return authRequest; } catch (err) { err.code = 'InternalDatabaseError'; throw err; } } async generateASP(user, data) { let password = generatePassword.generate({ length: 16, uppercase: false, numbers: false, symbols: false }); // We need a quick hash key that can be used to identify the password. // Otherwise, when authenticating, we'd need to check the password against all stored bcrypt // hashes which would make forever if the user has a longer list of application specific passwords let selector = getStringSelector(password); let allowedScopes = [...consts.SCOPES]; let hasAllScopes = false; let scopeSet = new Set(); let scopes = [].concat(data.scopes || []); scopes.forEach(scope => { scope = scope.toLowerCase().trim(); if (scope === '*') { hasAllScopes = true; } else if (allowedScopes.includes(scope)) { scopeSet.add(scope); } }); if (hasAllScopes || scopeSet.size === allowedScopes.length) { scopes = ['*']; } else { scopes = Array.from(scopeSet).sort((a, b) => a.localeCompare(b)); } let hash; try { hash = await hashes.hash(password); } catch (err) { log.error('DB', 'HASHFAIL generateASP id=%s error=%s', user, err.message); err.code = 'HashError'; throw err; } let passwordData = { _id: new ObjectID(), user, description: data.description, scopes, password: hash, selector, used: false, authEvent: false, authIp: false, created: new Date() }; if (data.ttl) { passwordData.ttl = data.ttl; passwordData.expires = new Date(Date.now() + data.ttl * 1000); } try { let userData = await this.users.collection('users').findOne( { _id: user }, { projection: { _id: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); if (!userData) { let err = new Error('Could not find user data'); err.code = 'UserNotFound'; throw err; } } catch (err) { log.error('DB', 'DBFAIL generateASP id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } try { await this.users.collection('asps').insertOne(passwordData); } catch (err) { err.code = 'InternalDatabaseError'; throw err; } await this.logAuthEvent(user, { action: 'create asp', asp: passwordData._id, aname: passwordData.description, temporary: passwordData.ttl ? true : false, result: 'success', sess: data.sess, ip: data.ip }); return { id: passwordData._id, password }; } async deleteASP(user, asp, data) { asp = new ObjectID(asp); let aspData; try { aspData = await this.users.collection('asps').findOne( { _id: asp, user }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { err.code = 'InternalDatabaseError'; throw err; } if (!aspData) { let err = new Error('Application Specific Password was not found'); err.code = 'AspNotFound'; throw err; } let r; try { r = await this.users.collection('asps').deleteOne({ _id: asp }); } catch (err) { err.code = 'InternalDatabaseError'; throw err; } if (r.deletedCount) { try { await this.logAuthEvent(user, { action: 'delete asp', asp: asp._id, aname: asp.description, result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } } return true; } async create(data) { // check if username is not already taken let existingUserData; try { existingUserData = await this.users.collection('users').findOne( { username: data.username.replace(/\./g, '') }, { projection: { unameview: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'CREATEFAIL username=%s error=%s', data.username, err.message); err.message = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; throw err; } if (existingUserData) { let err = new Error('This username already exists'); err.code = 'UserExistsError'; throw err; } let address = data.address && !data.emptyAddress ? data.address : ''; let addrview; if (!data.emptyAddress) { if (!address) { try { if (isemail.validate(data.username)) { address = data.username; } } catch (E) { // ignore } if (!address) { address = data.username.split('@').shift() + '@' + (config.emailDomain || os.hostname()).toLowerCase(); } } address = tools.normalizeAddress(address, false, { removeLabel: true }); addrview = tools.uview(address); } let allowedScopes = [...consts.SCOPES]; let scopeSet = new Set(); let disabledScopes = [].concat(data.disabledScopes || []); disabledScopes.forEach(scope => { scope = scope.toLowerCase().trim(); if (allowedScopes.includes(scope)) { scopeSet.add(scope); } }); disabledScopes = Array.from(scopeSet).sort((a, b) => a.localeCompare(b)); if (addrview) { // check if address is not already taken let existingAddressData; try { existingAddressData = await this.users.collection('addresses').findOne( { addrview }, { projection: { _id: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'CREATEFAIL username=%s address=%s error=%s', data.username, address, err.message); err.message = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; throw err; } if (existingAddressData) { let err = new Error('This address already exists'); err.code = 'AddressExistsError'; throw err; } } let junkRetention = consts.JUNK_RETENTION; // Insert user data let hash; if (!data.password) { // Users with an empty password can not log in hash = ''; } else { try { if (data.hashedPassword) { // try if the hashing library can handle it? await hashes.compare('whatever', data.password); // did not throw, so probably OK hash = data.password; } else { hash = await hashes.hash(data.password); } } catch (err) { log.error('DB', 'HASHFAIL user.create id=%s error=%s', data.username, err.message); err.code = 'HashError'; throw err; } } // spamLevel is from 0 (everything is spam) to 100 (accept everything) let spamLevel = 'spamLevel' in data && !isNaN(data.spamLevel) ? Number(data.spamLevel) : 50; if (spamLevel < 0) { spamLevel = 0; } if (spamLevel > 100) { spamLevel = 100; } let userData = { username: data.username, // dotless version unameview: tools.uview(data.username), name: data.name, // security password: '', // set this later. having no password prevents login enabled2fa: [], seed: '', // 2fa seed value pendingSeed: '', pendingSeedChanged: false, // default email address address: '', // set this later language: data.language, // quota storageUsed: 0, quota: data.quota || 0, recipients: data.recipients || 0, forwards: data.forwards || 0, imapMaxUpload: data.imapMaxUpload || 0, imapMaxDownload: data.imapMaxDownload || 0, pop3MaxDownload: data.pop3MaxDownload || 0, imapMaxConnections: data.imapMaxConnections || 0, receivedMax: data.receivedMax || 0, targets: [].concat(data.targets || []), // autoreply status // off by default, can be changed later by user through the API autoreply: false, uploadSentMessages: !!data.uploadSentMessages, pubKey: data.pubKey || '', encryptMessages: !!data.encryptMessages, encryptForwarded: !!data.encryptForwarded, spamLevel, // default retention for user mailboxes retention: data.retention || 0, disabledScopes, lastLogin: { time: false, authEvent: false, ip: false }, metaData: data.metaData || '', // until setup value is not true, this account is not usable activated: false, disabled: true, created: new Date() }; if (data.tags && data.tags.length) { userData.tags = data.tags; userData.tagsview = data.tagsview; } let user; try { let r = await this.users.collection('users').insertOne(userData, { w: 'majority' }); if (r.insertedId) { user = userData._id = r.insertedId; } else { throw new Error('Failed to insert data'); } } catch (err) { log.error('DB', 'CREATEFAIL username=%s error=%s', data.username, err.message); let response; switch (err.code) { case 11000: response = 'Selected user already exists'; err.code = 'UserExistsError'; break; default: response = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; } err.message = response; throw err; } let mailboxes = this.getMailboxes(data.language, data.mailboxes).map(mailbox => { mailbox.user = user; if (['\\Trash', '\\Junk'].includes(mailbox.specialUse)) { mailbox.retention = data.retention ? Math.min(data.retention, junkRetention) : junkRetention; } else { mailbox.retention = data.retention; } return mailbox; }); try { await this.database.collection('mailboxes').insertMany(mailboxes, { w: 'majority', ordered: false }); } catch (err) { try { // try to rollback await this.users.collection('users').deleteOne({ _id: user }); } catch (err) { // ignore? } log.error('DB', 'CREATEFAIL username=%s error=%s', data.username, err.message); err.message = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; throw err; } if (!data.emptyAddress) { let addressData = { user, address, // dotless version addrview, created: new Date() }; if (data.tags && data.tags.length && data.addTagsToAddress) { addressData.tags = data.tags; addressData.tagsview = data.tagsview; } try { // insert alias address to email address registry await this.users.collection('addresses').insertOne(addressData, { w: 'majority' }); } catch (err) { try { // try to rollback await this.users.collection('users').deleteOne({ _id: user }); await this.database.collection('mailboxes').deleteMany({ user }); } catch (err) { // ignore? } log.error('DB', 'CREATEFAIL username=%s error=%s', data.username, err.message); let response; switch (err.code) { case 11000: response = 'Selected email address already exists'; err.code = 'AddressExistsError'; break; default: response = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; } err.message = response; throw err; } } let updates = { address, activated: true, disabled: false }; if (data.requirePasswordChange) { updates.tempPassword = { validAfter: new Date(), password: hash, created: new Date() }; } else { updates.password = hash; } try { // register this address as the default address for that user let result = await this.users.collection('users').findOneAndUpdate( { _id: user, activated: false }, { $set: updates }, { returnOriginal: false, maxTimeMS: consts.DB_MAX_TIME_USERS } ); // use updated user data userData = result.value; } catch (err) { // try to rollback try { await this.users.collection('users').deleteOne({ _id: user }); await this.database.collection('mailboxes').deleteMany({ user }); await this.users.collection('addresses').deleteOne({ user }); } catch (err) { // ignore? } log.error('DB', 'CREATEFAIL username=%s error=%s', data.username, err.message); err.message = 'Database Error, failed to create user'; err.code = 'InternalDatabaseError'; throw err; } if (this.messageHandler && !data.emptyAddress) { let parsedName = humanname.parse(userData.name || ''); try { await this.pushDefaultMessages(userData, { NAME: userData.name || userData.username || address, FNAME: parsedName.firstName, LNAME: parsedName.lastName, DOMAIN: address.substr(address.indexOf('@') + 1), EMAIL: address }); } catch (err) { // ignore? } } try { await this.logAuthEvent(user, { action: 'account created', result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return userData._id; } // TODO: reset all existing user sessions async reset(user, data) { let password = generatePassword.generate({ length: 12, uppercase: true, numbers: true, symbols: false }); let hash; try { hash = await hashes.hash(password); } catch (err) { log.error('DB', 'HASHFAIL user.reset id=%s error=%s', user, err.message); err.code = 'HashError'; throw err; } let result; try { result = await this.users.collection('users').updateOne( { _id: user }, { $set: { tempPassword: { validAfter: data.validAfter || new Date(), password: hash, created: new Date() } } }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to reset user credentials'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Could not update user ' + user); err.code = 'UserUpdateFail'; throw err; } try { await this.logAuthEvent(user, { action: 'reset', sess: data.sess, ip: data.ip }); } catch (err) { // ignore? } return password; } async setupTotp(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { username: true, enabled2fa: true, seed: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to check user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('Could not find user data'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (enabled2fa.includes('totp')) { let err = new Error('TOTP 2FA is already enabled for this user'); err.code = 'TotpEnabled'; throw err; } let secret = speakeasy.generateSecret({ length: 20, name: userData.username }); let seed = secret.base32; if (config.totp && config.totp.secret) { try { let cipher = crypto.createCipher(config.totp.cipher || 'aes192', config.totp.secret); seed = '$' + cipher.update(seed, 'utf8', 'hex'); seed += cipher.final('hex'); } catch (E) { log.error('DB', 'TOTPFAIL cipher failed id=%s error=%s', user, E.message); let err = new Error('Database Error, failed to update user'); err.code = 'InternalDatabaseError'; throw err; } } let result; try { result = await this.users.collection('users').updateOne( { _id: user, enabled2fa: { $not: { $eq: 'totp' } } }, { $set: { pendingSeed: seed, pendingSeedChanged: new Date() } }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Could not update user, check if 2FA is not already enabled'); err.code = 'TotpEnabled'; throw err; } let otpauth_url = speakeasy.otpauthURL({ secret: secret.ascii, // label is part of URL and speakeasy as of v2.0.0 does not encode special characters label: encodeURIComponent(data.label || userData.username), issuer: data.issuer || 'WildDuck' }); try { let dataUrl = await QRCode.toDataURL(otpauth_url); return { secret: secret.base32, dataUrl }; } catch (err) { log.error('DB', 'QRFAIL id=%s error=%s', user, err.message); err.message = 'Failed to generate QR code'; err.code = 'QRError'; throw err; } } async enableTotp(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, pendingSeed: true, pendingSeedChanged: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to fetch user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (enabled2fa.includes('totp')) { // 2fa not set up let err = new Error('TOTP 2FA is already enabled for this user'); err.code = 'TotpEnabled'; throw err; } if (!userData.pendingSeed || (userData.pendingSeedChanged && userData.pendingSeedChanged < new Date(Date.now() - TOTP_SETUP_TTL))) { // 2fa not set up let err = new Error('TOTP 2FA is not initialized for this user'); err.code = 'TotpDisabled'; throw err; } let secret = userData.pendingSeed; if (secret.charAt(0) === '$' && config.totp && config.totp.secret) { try { let decipher = crypto.createDecipher(config.totp.cipher || 'aes192', config.totp.secret); secret = decipher.update(secret.substr(1), 'hex', 'utf-8'); secret += decipher.final('utf8'); } catch (E) { log.error('DB', 'TOTPFAIL decipher failed id=%s error=%s', user, E.message); let err = new Error('Can not use decrypted secret'); err.code = 'InternalConfigError'; throw err; } } let verified = speakeasy.totp.verify({ secret, encoding: 'base32', token: data.token, window: 6 }); if (!verified) { try { await this.logAuthEvent(user, { action: 'enable 2fa totp', result: 'fail', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return false; } let update = !userData.enabled2fa || typeof userData.enabled2fa === 'boolean' ? { $set: { seed: userData.pendingSeed, pendingSeed: '', pendingSeedChanged: false, enabled2fa: ['totp'] } } : { $set: { seed: userData.pendingSeed, pendingSeed: '', pendingSeedChanged: false }, $addToSet: { enabled2fa: 'totp' } }; // token was valid, update user settings let result; try { result = await this.users.collection('users').updateOne( { _id: user, pendingSeed: userData.pendingSeed }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Failed to set up 2FA. Check if it is not already enabled'); err.code = 'TotpEnabled'; throw err; } try { await this.logAuthEvent(user, { action: 'enable 2fa totp', result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async disableTotp(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, seed: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (!enabled2fa.includes('totp')) { let err = new Error('Could not update user, check if 2FA TOTP is not already disabled'); err.code = 'TotpDisabled'; throw err; } let update = !userData.enabled2fa || typeof userData.enabled2fa === 'boolean' ? { $set: { enabled2fa: [], seed: '', pendingSeed: '', pendingSeedChanged: false } } : { $pull: { enabled2fa: 'totp' }, $set: { seed: '', pendingSeed: '', pendingSeedChanged: false } }; let result; try { result = await this.users.collection('users').updateOne( { _id: user }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } try { await this.logAuthEvent(user, { action: 'disable 2fa totp', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async checkTotp(user, data) { let userRlKey = 'totp:' + user; let rateLimitRes; try { rateLimitRes = await this.rateLimit(userRlKey, data, 0); } catch (err) { err.code = 'InternalDatabaseError'; throw err; } if (!rateLimitRes.success) { throw rateLimitResponse(rateLimitRes); } let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { username: true, enabled2fa: true, seed: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This user does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (!userData.seed || !enabled2fa.includes('totp')) { // 2fa not set up let err = new Error('2FA TOTP is not enabled for this user'); err.code = 'TotpDisabled'; throw err; } let secret = userData.seed; if (userData.seed.charAt(0) === '$' && config.totp && config.totp.secret) { try { let decipher = crypto.createDecipher(config.totp.cipher || 'aes192', config.totp.secret); secret = decipher.update(userData.seed.substr(1), 'hex', 'utf-8'); secret += decipher.final('utf8'); } catch (E) { log.error('DB', 'TOTPFAIL decipher failed id=%s error=%s', user, E.message); let err = new Error('Can not use decrypted secret'); err.code = 'InternalConfigError'; throw err; } } let verified = speakeasy.totp.verify({ secret, encoding: 'base32', token: data.token, window: 6 }); try { await this.logAuthEvent(user, { action: 'check 2fa totp', result: verified ? 'success' : 'fail', sess: data.sess, ip: data.ip }); } catch (err) { // ignore? } try { if (verified) { await this.rateLimitReleaseUser(userRlKey); } else { await this.rateLimit(userRlKey, data, 1); } } catch (err) { // ignore } return verified; } async enableCustom2fa(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to fetch user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } // previous versions used {enabled2fa: true} for TOTP based 2FA let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (enabled2fa.includes('custom')) { // 2fa not set up let err = new Error('Custom 2FA is already enabled for this user'); err.code = 'CustomEnabled'; throw err; } let update = !userData.enabled2fa || typeof userData.enabled2fa === 'boolean' ? { $set: { enabled2fa: ['custom'].concat(userData.enabled2fa ? 'totp' : []) } } : { $addToSet: { enabled2fa: 'custom' } }; // update user settings let result; try { result = await this.users.collection('users').updateOne( { _id: user }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } try { await this.logAuthEvent(user, { action: 'enable 2fa custom', result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async disableCustom2fa(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } if (!Array.isArray(userData.enabled2fa) || !userData.enabled2fa.includes('custom')) { let err = new Error('Could not update user, check if custom 2FA is not already disabled'); err.code = 'CustomDisabled'; throw err; } let update = { $pull: { enabled2fa: 'custom' } }; let result; try { result = await this.users.collection('users').updateOne( { _id: user }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } try { await this.logAuthEvent(user, { action: 'disable 2fa custom', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async setupU2f(user, data) { let registrationRequest; try { registrationRequest = u2f.request(data.appId || config.u2f.appId); } catch (E) { log.error('U2F', 'U2FFAIL request id=%s error=%s', user, E.message); } if (!registrationRequest) { return false; } let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { username: true, enabled2fa: true, seed: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to check user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('Could not find user data'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (enabled2fa.includes('u2f')) { let err = new Error('U2F 2FA is already enabled for this user'); err.code = 'U2fEnabled'; throw err; } // store registration request to Redis let results; try { results = await this.redis .multi() .set('u2f:req:' + user, JSON.stringify(registrationRequest)) .expire('u2f:req:' + user, 1 * 3600) .exec(); if (!results || !results[0]) { throw new Error('Invalid DB response'); } else if (results && results[0] && results[0][0]) { throw typeof results[0][0] === 'object' ? results[0][0] : new Error(results[0][0]); } } catch (err) { err.code = 'InternalDatabaseError'; throw err; } return registrationRequest; } async enableU2f(user, data) { let results; try { results = await this.redis .multi() .get('u2f:req:' + user) .del('u2f:req:' + user) .exec(); if (!results || !results[0]) { throw new Error('Invalid DB response'); } else if (results && results[0] && results[0][0]) { throw typeof results[0][0] === 'object' ? results[0][0] : new Error(results[0][0]); } } catch (err) { err.code = 'InternalDatabaseError'; throw err; } let registrationRequest = results[0][1]; if (!registrationRequest) { let err = new Error('U2F 2FA is not initialized for this user'); err.code = 'U2fDisabled'; throw err; } try { registrationRequest = JSON.parse(registrationRequest); } catch (E) { let err = new Error('Invalid 2FA data stored'); err.code = 'InvalidU2fRequest'; throw err; } let registrationResponse = {}; Object.keys(data || {}).forEach(key => { if (['clientData', 'registrationData', 'version', 'challenge'].includes(key)) { registrationResponse[key] = data[key]; } }); let result; try { result = u2f.checkRegistration(registrationRequest, registrationResponse); } catch (E) { log.error('U2F', 'U2FFAIL checkRegistration id=%s error=%s', user, E.message); } if (!result || !result.successful) { let err = new Error((result && result.errorMessage) || 'Failed to validate U2F response'); err.code = 'InvalidU2fRequest'; throw err; } let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, u2f: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to fetch user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (enabled2fa.includes('u2f')) { // 2fa not set up let err = new Error('U2F 2FA is already enabled for this user'); err.code = 'U2fEnabled'; throw err; } let curDate = new Date(); let update = !userData.enabled2fa || typeof userData.enabled2fa === 'boolean' ? { $set: { enabled2fa: ['u2f'], u2f: { keyHandle: result.keyHandle, pubKey: result.publicKey, cert: result.certificate, date: curDate } } } : { $addToSet: { enabled2fa: 'u2f' }, $set: { u2f: { keyHandle: result.keyHandle, pubKey: result.publicKey, cert: result.certificate, date: curDate } } }; result = false; try { result = await this.users.collection('users').updateOne( { _id: user }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Failed to set up 2FA. User not found'); err.code = 'UserNotFound'; throw err; } try { await this.logAuthEvent(user, { action: 'enable 2fa u2f', result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async disableU2f(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, u2f: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This username does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (!enabled2fa.includes('u2f')) { // 2fa not set up let err = new Error('Could not update user, check if U2F 2FA is not already disabled'); err.code = 'U2fDisabled'; throw err; } let curDate = new Date(); let update = !userData.enabled2fa || typeof userData.enabled2fa === 'boolean' ? { $set: { enabled2fa: [], u2f: { keyHandle: '', pubKey: '', cert: '', date: curDate } } } : { $pull: { enabled2fa: 'u2f' }, $set: { u2f: { keyHandle: '', pubKey: '', cert: '', date: curDate } } }; let result; try { result = await this.users.collection('users').updateOne( { _id: user }, update, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Could not update user, check if 2FA is not already disabled'); err.code = 'UserNotFound'; throw err; } try { await this.logAuthEvent(user, { action: 'disable 2fa u2f', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async startU2f(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, u2f: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This user does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (!enabled2fa.includes('u2f') || !userData.u2f || !userData.u2f.keyHandle) { // 2fa not set up let err = new Error('2FA U2F is not enabled for this user'); err.code = 'U2fDisabled'; throw err; } let authRequest = await this.generateU2fAuthRequest(user, userData.u2f.keyHandle, data.appId); if (!authRequest) { return false; } return authRequest; } async checkU2f(user, data) { let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { enabled2fa: true, username: true, u2f: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'LOADFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('This user does not exist'); err.code = 'UserNotFound'; throw err; } let enabled2fa = Array.isArray(userData.enabled2fa) ? userData.enabled2fa : [].concat(userData.enabled2fa ? 'totp' : []); if (!enabled2fa.includes('u2f') || !userData.u2f || !userData.u2f.keyHandle) { // 2fa not set up let err = new Error('2FA U2F is not enabled for this user'); err.code = 'U2fDisabled'; throw err; } let results; try { results = await this.redis .multi() .get('u2f:auth:' + user) .del('u2f:auth:' + user) .exec(); if (!results || !results[0]) { throw new Error('Invalid DB response'); } else if (results && results[0] && results[0][0]) { throw typeof results[0][0] === 'object' ? results[0][0] : new Error(results[0][0]); } } catch (err) { err.code = 'InternalDatabaseError'; throw err; } let authRequest = results[0][1]; if (!authRequest) { return false; } try { authRequest = JSON.parse(authRequest); } catch (E) { return false; } let authResponse = {}; Object.keys(data || {}).forEach(key => { if (['clientData', 'signatureData'].includes(key)) { authResponse[key] = data[key]; } }); let result; try { result = u2f.checkSignature(authRequest, authResponse, userData.u2f.pubKey); } catch (E) { // ignore log.error('U2F', 'U2FFAIL checkSignature id=%s error=%s', user, E.message); } let verified = result && result.successful; try { await this.logAuthEvent(user, { action: 'check 2fa u2f', result: verified ? 'success' : 'fail', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return verified; } async disable2fa(user, data) { let result; try { result = await this.users.collection('users').updateOne( { _id: user }, { $set: { enabled2fa: [], seed: '', pendingSeed: '', pendingSeedChanged: false, u2f: { keyHandle: '', pubKey: '', cert: '', date: new Date() } } }, { maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.matchedCount) { let err = new Error('Could not update user, check if 2FA is not already disabled'); err.code = 'U2fDisabled'; throw err; } try { await this.logAuthEvent(user, { action: 'disable 2fa', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } return true; } async update(user, data) { let $set = {}; let $push = {}; let updates = false; let passwordChanged = false; // if some of the counter keys are modified, then reset the according value in Redis let resetKeys = new Map([ ['recipients', 'wdr'], ['forwards', 'wdf'], ['imapMaxUpload', 'iup'], ['imapMaxDownload', 'idw'], ['pop3MaxDownload', 'pdw'], ['receivedMax', 'rl:rcpt'] ]); let flushKeys = []; let flushHKeys = []; Object.keys(data).forEach(key => { if (['user', 'existingPassword', 'hashedPassword', 'allowUnsafe', 'ip', 'sess'].includes(key)) { return; } if (resetKeys.has(key)) { flushKeys.push(resetKeys.get(key) + ':' + user); } if (key === 'imapMaxConnections') { flushHKeys.push({ key: 'lim:imap', value: user.toString() }); } if (key === 'password') { if (!data[key]) { // removes current password (if set) $set.password = ''; } else { $set.password = data[key]; // hashed below } $set.tempPassword = false; $set.passwordChange = new Date(); passwordChanged = true; return; } if (key === 'disable2fa') { if (data.disable2fa) { $set.enabled2fa = []; $set.seed = ''; $set.pendingSeed = ''; $set.pendingSeedChanged = false; $set.u2f = { keyHandle: '', pubKey: '', cert: '', date: new Date() }; } updates = true; return; } if (key === 'spamLevel') { // spamLevel is from 0 (everything is spam) to 100 (accept everything) let spamLevel = !isNaN(data.spamLevel) ? Number(data.spamLevel) : 50; if (spamLevel < 0) { spamLevel = 0; } if (spamLevel > 100) { spamLevel = 100; } $set.spamLevel = data.spamLevel; updates = true; return; } if (key === 'disabledScopes') { let allowedScopes = [...consts.SCOPES]; let scopeSet = new Set(); let disabledScopes = [].concat(data.disabledScopes || []); disabledScopes.forEach(scope => { scope = scope.toLowerCase().trim(); if (allowedScopes.includes(scope)) { scopeSet.add(scope); } }); $set.disabledScopes = Array.from(scopeSet).sort((a, b) => a.localeCompare(b)); updates = true; return; } $set[key] = data[key]; updates = true; }); if ($set.username) { $set.unameview = tools.uview($set.username); } if (!updates && !passwordChanged) { let err = new Error('Nothing was updated'); err.code = 'NoUpdates'; throw err; } if ($set.password) { try { if (data.hashedPassword) { // try if the hashing library can handle it? await hashes.compare('whatever', $set.password); // did not throw, so probably OK, no need to update `$set.password` } else { $set.password = await hashes.hash(data.password); } } catch (err) { log.error('DB', 'HASHFAIL user.update id=%s error=%s', data.username, err.message); err.code = 'HashError'; throw err; } } let userData; try { userData = await this.users.collection('users').findOne( { _id: user }, { projection: { password: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, 'User was not found'); let err = new Error('User was not found'); err.code = 'UserNotFound'; throw err; } // push current password to old passwords list on password change (and not temporary password) if ($set.password && userData && userData.password) { $push.oldPasswords = { date: new Date(), hash: userData.password }; } if (data.existingPassword && userData.password) { let success; try { success = await hashes.compare(data.existingPassword, userData.password); } catch (err) { log.error('DB', 'HASHFAIL user.update id=%s error=%s', data.username, err.message); err.code = err.code || 'HashError'; throw err; } if (!success) { try { await this.logAuthEvent(user, { action: 'password change', result: 'fail', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } let err = new Error('Password verification failed'); err.code = 'AuthFail'; throw err; } } let updateQuery = { $set }; if (Object.keys($push).length) { updateQuery.$push = $push; } let result; try { result = await this.users.collection('users').findOneAndUpdate( { _id: user }, updateQuery, { returnOriginal: false, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, err.message); err.message = 'Database Error, failed to update user'; err.code = 'InternalDatabaseError'; throw err; } if (!result || !result.value) { log.error('DB', 'UPDATEFAIL id=%s error=%s', user, 'User was not found'); let err = new Error('user was not found'); err.code = 'UserNotFound'; throw err; } // check if we need to reset any ttl counters if (flushKeys.length || flushHKeys.length) { let flushreq = this.redis.multi(); flushKeys.forEach(key => { flushreq = flushreq.del(key); }); flushHKeys.forEach(entry => { flushreq = flushreq.hdel(entry.key, entry.value); }); // just call the operations and hope for the best, no problems if fails try { await flushreq.exec(); } catch (err) { // ignore } } try { await this.flushUserCache(user); } catch (err) { // ignore } if (passwordChanged) { try { await this.logAuthEvent(user, { action: 'password change', result: 'success', sess: data.sess, ip: data.ip }); } catch (err) { // ignore } } return true; } getMailboxes(language, defaults) { defaults = defaults || {}; let lcode = (language || '') .toLowerCase() .split('_') .shift(); let translation = lcode && mailboxTranslations.hasOwnProperty(lcode) ? mailboxTranslations[lcode] : mailboxTranslations.en; let defaultMailboxes = [ { path: 'INBOX' }, { specialUse: '\\Sent' }, { specialUse: '\\Trash' }, { specialUse: '\\Drafts' }, { specialUse: '\\Junk' } ]; let uidValidity = Math.floor(Date.now() / 1000); return defaultMailboxes.map(mailbox => ({ path: mailbox.path === 'INBOX' ? 'INBOX' : defaults[mailbox.specialUse] || translation[mailbox.specialUse || mailbox.path] || mailbox.path, specialUse: mailbox.specialUse, uidValidity, uidNext: 1, modifyIndex: 0, subscribed: true, flags: [] })); } async logAuthEvent(user, entry) { // only log auth events if we have a valid user id and logging is not disabled if (!user || !tools.isId(user) || this.authlogExpireDays === false) { return false; } let now = new Date(); entry.user = typeof user === 'string' ? new ObjectID(user) : user; entry.action = entry.action || 'authentication'; entry.created = now; if (typeof this.authlogExpireDays === 'number' && this.authlogExpireDays !== 0) { // this entry expires in set days entry.expires = new Date(Date.now() + Math.abs(this.authlogExpireDays) * 24 * 3600 * 1000); } // key is for merging similar events entry.key = crypto .createHash('md5') .update([entry.protocol, entry.ip, entry.action, entry.result].map(v => (v || '').toString()).join('^')) .digest(); let r = await this.users.collection('authlog').findOneAndUpdate( { user: entry.user, created: { // merge similar events into buckets of time $gte: new Date(Date.now() - consts.AUTHLOG_BUCKET) }, // events are merged based on this key key: entry.key }, { $setOnInsert: entry, $inc: { events: 1 }, $set: { last: now } }, { upsert: true, projection: { _id: true }, returnOriginal: false, maxTimeMS: consts.DB_MAX_TIME_USERS } ); return r && r.value && r.value._id; } async logout(user, reason) { // register this address as the default address for that user let userData; try { userData = await this.users.collection('users').findOne( { _id: new ObjectID(user) }, { projection: { _id: true }, maxTimeMS: consts.DB_MAX_TIME_USERS } ); } catch (err) { log.error('DB', 'DBFAIL logout id=%s error=%s', user, err.message); err.message = 'Database Error, failed to find user'; err.code = 'InternalDatabaseError'; throw err; } if (!userData) { let err = new Error('User not found'); err.code = 'UserNotFound'; throw err; } if (!this.messageHandler || !this.messageHandler.notifier) { return false; } this.messageHandler.notifier.fire(userData._id, { command: 'LOGOUT', reason }); return true; } // This method deletes non-expiring records from database async delete(user, meta) { meta = meta || {}; // clear limits in Redis try { await this.redis.del('limits:' + user); } catch (err) { // ignore } try { await this.users.collection('addresses').deleteMany({ user }); } catch (err) { log.error('USERDEL', 'Failed to delete addresses for id=%s error=%s', user, err.message); err.code = 'InternalDatabaseError'; throw err; } try { await this.users.collection('users').deleteOne({ _id: user }); } catch (err) { log.error('USERDEL', 'Failed to delete user id=%s error=%s', user, err.message); err.code = 'InternalDatabaseError'; throw err; } // set up a task to delete user messages let now = new Date(); await this.database.collection('tasks').insertOne({ task: 'user-delete', locked: false, lockedUntil: now, created: now, status: 'queued', user }); try { await this.logAuthEvent(user, { action: 'delete user', result: 'success', sess: meta.session, ip: meta.ip }); } catch (err) { // ignore } return true; } async pushDefaultMessages(userData, tags) { let messages = await tools.getEmailTemplates(tags); if (!messages || !messages.length) { return false; } let encryptMessage = util.promisify(this.messageHandler.encryptMessage.bind(this.messageHandler)); let addMessage = util.promisify(this.messageHandler.add.bind(this.messageHandler)); for (let data of messages) { let compiler = new MailComposer(data); let compiled = compiler.compile(); let build = util.promisify(compiled.build.bind(compiled)); try { let message = await build(); let mailboxQueryKey = 'path'; let mailboxQueryValue = 'INBOX'; if (['sent', 'trash', 'junk', 'drafts', 'archive'].includes((data.mailbox || '').toString().toLowerCase())) { mailboxQueryKey = 'specialUse'; mailboxQueryValue = '\\' + data.mailbox.toLowerCase().replace(/^./g, c => c.toUpperCase()); } let flags = []; if (data.seen) { flags.push('\\Seen'); } if (data.flag) { flags.push('\\Flagged'); } let encrypted = await encryptMessage(userData.encryptMessages ? userData.pubKey : false, message); if (encrypted) { message = encrypted; } await addMessage({ user: userData._id, [mailboxQueryKey]: mailboxQueryValue, meta: { source: 'AUTO', time: new Date() }, flags, raw: message }); } catch (err) { // ignore } } } // returns a query to find a user based on address or username async checkAddress(username) { if (username.indexOf('@') < 0) { // not formatted as an address, assume regular username return { unameview: tools.uview(username) }; } let addressData = await this.asyncResolveAddress(username, { wildcard: false, projection: { user: true } }); if (addressData && !addressData.user) { // found a non-user address return false; } if (!addressData) { // fall back to username formatted as an address return { unameview: tools.normalizeAddress(username, false, { removeLabel: true, removeDots: true }) }; } return { _id: addressData.user }; } async generateAuthToken(user) { let accessToken = crypto.randomBytes(20).toString('hex'); let tokenHash = crypto .createHash('sha256') .update(accessToken) .digest('hex'); let key = 'tn:token:' + tokenHash; let ttl = config.api.accessControl.tokenTTL || consts.ACCESS_TOKEN_DEFAULT_TTL; let tokenData = { user: user.toString(), role: 'user', created: Date.now(), ttl, // signature s: crypto .createHmac('sha256', config.api.accessControl.secret) .update( JSON.stringify({ token: accessToken, user: user.toString(), role: 'user' }) ) .digest('hex') }; await this.redis .multi() .hmset(key, tokenData) .expire(key, ttl) .exec(); return accessToken; } } function rateLimitResponse(res) { let err = new Error('Authentication was rate limited. Check again in ' + res.ttl + ' seconds'); err.response = 'NO'; err.code = 'RateLimitedError'; return err; } // high collision hash function function getStringSelector(str) { let hash = crypto .createHash('sha1') .update(str) .digest(); let sum = 0; for (let i = 0, len = hash.length; i < len; i++) { sum += hash[i]; } return (sum % 32).toString(16); } module.exports = UserHandler;