Adapt DN class for Gitlab

lib/gitlab/ldap/dn.rb

 # -*- ruby encoding: utf-8 -*-
 
+# Based on the `ruby-net-ldap` gem's `Net::LDAP::DN`
+#
+# For our purposes, this class is used to normalize DNs in order to allow proper
+# comparison.
+#
+# E.g. DNs should be compared case-insensitively (in basically all LDAP
+# implementations or setups), therefore we downcase every DN.
+
 ##
 # Objects of this class represent an LDAP DN ("Distinguished Name"). A DN
 # ("Distinguished Name") is a unique identifier for an entry within an LDAP
@@ -11,7 +19,9 @@
 #
 # A fully escaped DN needs to be unescaped when analysing its contents. This
 # class also helps take care of that.
-class Net::LDAP::DN
+module Gitlab
+  module LDAP
+    class DN
       ##
       # Initialize a DN, escaping as required. Pass in attributes in name/value
       # pairs. If there is a left over argument, it will be appended to the dn
@@ -221,4 +231,6 @@ class Net::LDAP::DN
       def method_missing(method, *args, &block)
         @dn.send(method, *args, &block)
       end
+    end
+  end
 end