1 files changed, 12 insertions, 2 deletions
diff --git a/app/models/identity.rb b/app/models/identity.rb
index ff811e19f8a..b3fa7d8176a 100644
--- a/app/models/identity.rb
+++ b/app/models/identity.rb
@@ -8,20 +8,30 @@ class Identity < ActiveRecord::Base
   validates :extern_uid, allow_blank: true, uniqueness: { scope: :provider, case_sensitive: false }
   validates :user_id, uniqueness: { scope: :provider }
 
+  before_save :ensure_normalized_extern_uid, if: :extern_uid_changed?
+
   scope :with_provider, ->(provider) { where(provider: provider) }
   scope :with_extern_uid, ->(provider, extern_uid) do
     iwhere(extern_uid: normalize_uid(provider, extern_uid)).with_provider(provider)
   end
 
   def ldap?
-    provider.starts_with?('ldap')
+    Gitlab::OAuth::Provider.ldap_provider?(provider)
   end
 
   def self.normalize_uid(provider, uid)
-    if provider.to_s.starts_with?('ldap')
+    if Gitlab::OAuth::Provider.ldap_provider?(provider)
       Gitlab::LDAP::Person.normalize_dn(uid)
     else
       uid.to_s
     end
   end
+
+  private
+
+  def ensure_normalized_extern_uid
+    return if extern_uid.nil?
+
+    self.extern_uid = Identity.normalize_uid(self.provider, self.extern_uid)
+  end
 end