Add Google oauth variable: hostedDomain

Which is part of `passport-google-oauth2`.
It could be used as whitelist to a domain supported by google oauth.
Ref: https://github.com/jaredhanson/passport-google-oauth2/issues/3

Signed-off-by: ike <developer@ikewat.com>

docs/configuration-config-file.md

@@ -134,7 +134,7 @@ these are rarely used for various reasons.
 
 | variables | example values | description |
 | --------- | ------ | ----------- |
-| `google` | `{clientID: ..., clientSecret: ...}` | An object containing the client ID and the client secret obtained by the [Google API console](https://console.cloud.google.com/apis) |
+| `google` | `{clientID: ..., clientSecret: ..., hostedDomain: ...}` | An object containing the client ID and the client secret obtained by the [Google API console](https://console.cloud.google.com/apis) |
 
 ### LDAP Login
 

docs/configuration-env-vars.md

@@ -135,6 +135,7 @@ defaultNotePath can't be set from env-vars
 | -------- | ------------- | ----------- |
 | `CMD_GOOGLE_CLIENTID` | no example | Google API client id |
 | `CMD_GOOGLE_CLIENTSECRET` | no example | Google API client secret |
+| `CMD_GOOGLE_HOSTEDDOMAIN` | `example.com` | Provided only if the user belongs to a hosted domain. default is `undefined` |
 
 
 ### LDAP Login

lib/config/default.js

@@ -124,7 +124,8 @@ module.exports = {
   },
   google: {
     clientID: undefined,
-    clientSecret: undefined
+    clientSecret: undefined,
+    hostedDomain: undefined
   },
   ldap: {
     providerName: undefined,

lib/config/dockerSecret.js

@@ -53,7 +53,8 @@ if (fs.existsSync(basePath)) {
     },
     google: {
       clientID: getSecret('google_clientID'),
-      clientSecret: getSecret('google_clientSecret')
+      clientSecret: getSecret('google_clientSecret'),
+      hostedDomain: getSecret('google_hostedDomain')
     },
     imgur: getSecret('imgur_clientid')
   }

lib/config/environment.js

@@ -101,7 +101,8 @@ module.exports = {
   },
   google: {
     clientID: process.env.CMD_GOOGLE_CLIENTID,
-    clientSecret: process.env.CMD_GOOGLE_CLIENTSECRET
+    clientSecret: process.env.CMD_GOOGLE_CLIENTSECRET,
+    hostedDomain: process.env.CMD_GOOGLE_HOSTEDDOMAIN
   },
   ldap: {
     providerName: process.env.CMD_LDAP_PROVIDERNAME,

lib/web/auth/google/index.js

@@ -16,7 +16,7 @@ passport.use(new GoogleStrategy({
 }, passportGeneralCallback))
 
 googleAuth.get('/auth/google', function (req, res, next) {
-  passport.authenticate('google', { scope: ['profile'] })(req, res, next)
+  passport.authenticate('google', { scope: ['profile'], hostedDomain: config.google.hostedDomain })(req, res, next)
 })
 // google auth callback
 googleAuth.get('/auth/google/callback',