Add https_proxy support to gitlab oauth

Signed-off-by: Ruben ten Hove <git@rhtenhove.nl>

lib/web/auth/gitlab/index.js

@@ -6,16 +6,24 @@ const GitlabStrategy = require('passport-gitlab2').Strategy
 const config = require('../../../config')
 const response = require('../../../response')
 const { setReturnToFromReferer, passportGeneralCallback } = require('../utils')
+const HttpsProxyAgent = require('https-proxy-agent');
 
 const gitlabAuth = module.exports = Router()
 
-passport.use(new GitlabStrategy({
+let gitlabAuthStrategy = new GitlabStrategy({
   baseURL: config.gitlab.baseURL,
   clientID: config.gitlab.clientID,
   clientSecret: config.gitlab.clientSecret,
   scope: config.gitlab.scope,
   callbackURL: config.serverURL + '/auth/gitlab/callback'
-}, passportGeneralCallback))
+}, passportGeneralCallback)
+
+if (process.env['https_proxy']) {
+  let httpsProxyAgent = new HttpsProxyAgent(process.env['https_proxy']);
+  gitlabAuthStrategy._oauth2.setAgent(httpsProxyAgent);
+}
+
+passport.use(gitlabAuthStrategy)
 
 gitlabAuth.get('/auth/gitlab', function (req, res, next) {
   setReturnToFromReferer(req)