diff --git a/Gemfile b/Gemfile
index aec86684..463fc7ed 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,7 @@
 source "https://rubygems.org"
 
 gem "zip"
+gem "dav4rack"
 
 #Allows --without=xapian
 group :xapian do
diff --git a/config/routes.rb b/config/routes.rb
index 8c4d7739..df77b46a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -88,6 +88,9 @@ RedmineApp::Application.routes.draw do
   post '/dmsf/folders/:id/copy/to', :controller => 'dmsf_folders_copy', :action => 'copy_to'
   get '/dmsf/folders/:id/copy', :controller => 'dmsf_folders_copy', :action => 'new'
 
-
-
+  mount DAV4Rack::Handler.new(
+#    :root => Rails.root.to_s,
+    :root_uri_path => "/dmsf/webdav",
+    :resource_class => RedmineDmsf::Webdav::ResourceFactory
+  ), :at => "/dmsf/webdav"
 end
diff --git a/lib/redmine_dmsf.rb b/lib/redmine_dmsf.rb
index a06e9306..99a6fcb5 100644
--- a/lib/redmine_dmsf.rb
+++ b/lib/redmine_dmsf.rb
@@ -1,6 +1,7 @@
 require 'redmine_dmsf/patches/custom_fields_helper'
 require 'redmine_dmsf/patches/acts_as_customizable'
 require 'redmine_dmsf/patches/project_patch'
+require 'redmine_dmsf/webdav'
 
 module RedmineDmsf
 end
diff --git a/lib/redmine_dmsf/webdav.rb b/lib/redmine_dmsf/webdav.rb
new file mode 100644
index 00000000..ee012cfa
--- /dev/null
+++ b/lib/redmine_dmsf/webdav.rb
@@ -0,0 +1 @@
+require 'redmine_dmsf/webdav/resource_factory'
diff --git a/lib/redmine_dmsf/webdav/resource_factory.rb b/lib/redmine_dmsf/webdav/resource_factory.rb
new file mode 100644
index 00000000..9872b449
--- /dev/null
+++ b/lib/redmine_dmsf/webdav/resource_factory.rb
@@ -0,0 +1,17 @@
+module RedmineDmsf
+  module Webdav
+    class ResourceFactory < DAV4Rack::Resource
+
+      def initialize(public_path, path, request, response, options)
+        super(public_path, path, request, response, options)
+        if (path == "")
+        end
+      end
+
+      def authenticate(username, password)
+        User.try_to_login(username, password) ? true : false
+      end
+
+    end
+  end
+end