Show errors from openid provider

src/components/home/contentAuth.vue

@@ -62,7 +62,7 @@ export default {
 			return state.namespaces.namespaces.filter(n => !n.isArchived)
 		},
 		currentList: CURRENT_LIST,
-		background: 'background',
+		background: 'background', // FIXME: Return the full thing or nothing at all to prevent calls to /null
 		menuActive: MENU_ACTIVE,
 		userInfo: state => state.auth.info,
 		authenticated: state => state.auth.authenticated,

src/i18n/lang/en.json

@@ -38,6 +38,7 @@
       "loginWith": "Log in with {provider}",
       "authenticating": "Authenticating…",
       "openIdStateError": "State does not match, refusing to continue!",
+      "openIdGeneralError": "An error occured while authenticating against the third party.",
       "logout": "Logout"
     },
     "settings": {

src/views/user/OpenIdAuth.vue

@@ -39,6 +39,16 @@ export default {
 			}
 			localStorage.setItem('authenticating', true)
 
+			if (typeof this.$route.query.error !== 'undefined') {
+				let error = this.$t('user.auth.openIdGeneralError')
+				if (typeof this.$route.query.message !== 'undefined') {
+					error = this.$route.query.message
+				}
+				localStorage.removeItem('authenticating')
+				this.$store.commit(ERROR_MESSAGE, error)
+				return
+			}
+
 			const state = localStorage.getItem('state')
 			if (typeof this.$route.query.state === 'undefined' || this.$route.query.state !== state) {
 				localStorage.removeItem('authenticating')