Add mattermost authentication

lib/web/auth/mattermost/index.js

@@ -0,0 +1,49 @@
+'use strict'
+
+const Router = require('express').Router
+const passport = require('passport')
+const Mattermost = require('mattermost')
+const OAuthStrategy = require('passport-oauth2').Strategy
+const config = require('../../../config')
+const {setReturnToFromReferer, passportGeneralCallback} = require('../utils')
+
+const mattermost = new Mattermost.Client()
+
+let mattermostAuth = module.exports = Router()
+
+let mattermostStrategy = new OAuthStrategy({
+  authorizationURL: config.mattermost.baseURL + '/oauth/authorize',
+  tokenURL: config.mattermost.baseURL + '/oauth/access_token',
+  clientID: config.mattermost.clientID,
+  clientSecret: config.mattermost.clientSecret,
+  callbackURL: config.serverurl + '/auth/mattermost/callback'
+}, passportGeneralCallback)
+
+mattermostStrategy.userProfile = (accessToken, done) => {
+  mattermost.setUrl(config.mattermost.baseURL)
+  mattermost.token = accessToken
+  mattermost.useHeaderToken()
+  mattermost.getMe(
+      (data) => {
+        done(null, data)
+      },
+      (err) => {
+        done(err)
+      }
+  )
+}
+
+passport.use(mattermostStrategy)
+
+mattermostAuth.get('/auth/mattermost', function (req, res, next) {
+  setReturnToFromReferer(req)
+  passport.authenticate('oauth2')(req, res, next)
+})
+
+// mattermost auth callback
+mattermostAuth.get('/auth/mattermost/callback',
+  passport.authenticate('oauth2', {
+    successReturnToOrRedirect: config.serverurl + '/',
+    failureRedirect: config.serverurl + '/'
+  })
+)