HackMD/lib/web/auth/ldap/index.js

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'use strict'
const Router = require('express').Router
const passport = require('passport')
const LDAPStrategy = require('passport-ldapauth')
const config = require('../../../config')
const models = require('../../../models')
const logger = require('../../../logger')
const { setReturnToFromReferer } = require('../utils')
const { urlencodedParser } = require('../../utils')
const response = require('../../../response')
let ldapAuth = module.exports = Router()
passport.use(new LDAPStrategy({
server: {
url: config.ldap.url || null,
bindDN: config.ldap.bindDn || null,
bindCredentials: config.ldap.bindCredentials || null,
searchBase: config.ldap.searchBase || null,
searchFilter: config.ldap.searchFilter || null,
searchAttributes: config.ldap.searchAttributes || null,
tlsOptions: config.ldap.tlsOptions || null
}
}, function (user, done) {
var uuid = user.uidNumber || user.uid || user.sAMAccountName || undefined
if (config.ldap.useridField && user[config.ldap.useridField]) {
uuid = user[config.ldap.useridField]
}
if (typeof uuid === 'undefined') {
throw new Error('Could not determine UUID for LDAP user. Check that ' +
'either uidNumber, uid or sAMAccountName is set in your LDAP directory ' +
'or use another unique attribute and configure it using the ' +
'"useridField" option in ldap settings.')
}
var username = uuid
if (config.ldap.usernameField && user[config.ldap.usernameField]) {
username = user[config.ldap.usernameField]
}
var profile = {
id: 'LDAP-' + uuid,
username: username,
displayName: user.displayName,
emails: user.mail ? Array.isArray(user.mail) ? user.mail : [user.mail] : [],
avatarUrl: null,
profileUrl: null,
provider: 'ldap'
}
var stringifiedProfile = JSON.stringify(profile)
models.User.findOrCreate({
where: {
profileid: profile.id.toString()
},
defaults: {
profile: stringifiedProfile
}
}).spread(function (user, created) {
if (user) {
var needSave = false
if (user.profile !== stringifiedProfile) {
user.profile = stringifiedProfile
needSave = true
}
if (needSave) {
user.save().then(function () {
if (config.debug) { logger.debug('user login: ' + user.id) }
return done(null, user)
})
} else {
if (config.debug) { logger.debug('user login: ' + user.id) }
return done(null, user)
}
}
}).catch(function (err) {
logger.error('ldap auth failed: ' + err)
return done(err, null)
})
}))
ldapAuth.post('/auth/ldap', urlencodedParser, function (req, res, next) {
if (!req.body.username || !req.body.password) return response.errorBadRequest(res)
setReturnToFromReferer(req)
passport.authenticate('ldapauth', {
successReturnToOrRedirect: config.serverURL + '/',
failureRedirect: config.serverURL + '/',
failureFlash: true
})(req, res, next)
})