fix(oauth2): verify user id exists

Signed-off-by: Philip Molares <philip.molares@udo.edu>

lib/web/auth/oauth2/index.js

@@ -62,6 +62,11 @@ function parseProfile (data) {
   const displayName = extractProfileAttribute(data, config.oauth2.userProfileDisplayNameAttr)
   const email = extractProfileAttribute(data, config.oauth2.userProfileEmailAttr)
 
+  if (id === undefined && username === undefined) {
+    logger.error('oauth2 auth failed: id and username are undefined')
+    throw new Error('User ID or Username required')
+  }
+
   return {
     id: id || username,
     username,