diff --git a/Gemfile b/Gemfile
index e7f88e3f4..94d29f4fa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ gem 'bson_ext'
 gem 'carrierwave'
 gem 'carrierwave-mongoid', :require => 'carrierwave/mongoid'
 gem 'devise'
+gem "net-ldap", "~> 0.3.1"
 gem 'exception_notification' # Send error trace
 gem 'execjs'
 gem 'jquery-rails'
@@ -21,6 +22,8 @@ gem 'sinatra'
 gem 'sprockets'
 gem 'tinymce-rails'
 
+
+
 # Gems used only for assets and not required
 # in production environments by default.
 group :assets do
diff --git a/Gemfile.lock b/Gemfile.lock
index 92db033df..1abf066f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -95,6 +95,7 @@ GEM
       mongo (~> 1.3)
       tzinfo (~> 0.3.22)
     multi_json (1.0.4)
+    net-ldap (0.3.1)
     orm_adapter (0.0.6)
     polyglot (0.3.3)
     rack (1.3.6)
@@ -216,6 +217,7 @@ DEPENDENCIES
   kaminari
   mini_magick
   mongoid
+  net-ldap (~> 0.3.1)
   radius
   rails (>= 3.1.0, < 3.2.0)
   rake
diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
new file mode 100644
index 000000000..3e31ca4e7
--- /dev/null
+++ b/app/controllers/sessions_controller.rb
@@ -0,0 +1,37 @@
+class SessionsController < Devise::SessionsController
+  prepend_before_filter :require_no_authentication, :only => [ :new, :create ]
+  include Devise::Controllers::InternalHelpers
+
+
+  # POST /resource/sign_in
+  def create 
+    login_password = params[:user][:password]
+    login_uid = params[:user][:nccu_ldap_uid]
+    result = false
+    ldap = Net::LDAP.new
+    ldap.port = '8001'
+    ldap.host = '127.0.0.1'
+    ldap_filter = "(uid=#{login_uid})"
+    ldap_base = 'ou=People,dc=nccu,dc=edu,dc=tw'
+    ldap.authenticate("cn=uccn,ou=profile,dc=nccu,dc=edu,dc=tw","nccu2ucc") 
+    if ldap.bind
+        result = ldap.bind_as(:base => ldap_base,:filter => ldap_filter,:password=> login_password)
+        if result 
+          resource =  User.find_or_initialize_by( nccu_ldap_uid: login_uid )          
+           # resource = env['warden'].authenticate!(:check_nccu_ldap)
+           # resource = warden.authenticate!(:scope => resource_name, :recall => "#{controller_path}#new")
+           set_flash_message(:notice, :signed_in) if is_navigational_format?
+           resource_name = resource._type.downcase
+          sign_in(resource_name, resource)
+          respond_with resource, :location => redirect_location(resource_name, resource)
+        else
+          flash[:notice] = t('devise.failure.ldap_invalid')
+          render :action => "new" 
+        end
+      else
+        flash[:notice] = t('devise.failure.ldap_connection_failed')
+        render :action => "new"
+      end
+    end
+  
+end
\ No newline at end of file
diff --git a/app/models/user/user.rb b/app/models/user/user.rb
index 13d282bb4..6796b47eb 100644
--- a/app/models/user/user.rb
+++ b/app/models/user/user.rb
@@ -9,6 +9,7 @@ class User
   
   field :admin, :type => Boolean, :default => true
   field :active_role
+  field :nccu_ldap_uid
   
   has_many :attribute_values, :autosave => true, :dependent => :destroy
   has_many :app_auths,as: :privilege_apps,:inverse_of => :privilege_lists
diff --git a/app/views/devise/confirmations/new.html.erb b/app/views/devise/confirmations/new.html.erb
new file mode 100644
index 000000000..b7ae403ca
--- /dev/null
+++ b/app/views/devise/confirmations/new.html.erb
@@ -0,0 +1,12 @@
+<h2>Resend confirmation instructions</h2>
+
+<%= form_for(resource, :as => resource_name, :url => confirmation_path(resource_name), :html => { :method => :post }) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :email %><br />
+  <%= f.email_field :email %></div>
+
+  <div><%= f.submit "Resend confirmation instructions" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
\ No newline at end of file
diff --git a/app/views/devise/mailer/confirmation_instructions.html.erb b/app/views/devise/mailer/confirmation_instructions.html.erb
new file mode 100644
index 000000000..a6ea8ca17
--- /dev/null
+++ b/app/views/devise/mailer/confirmation_instructions.html.erb
@@ -0,0 +1,5 @@
+<p>Welcome <%= @resource.email %>!</p>
+
+<p>You can confirm your account through the link below:</p>
+
+<p><%= link_to 'Confirm my account', confirmation_url(@resource, :confirmation_token => @resource.confirmation_token) %></p>
diff --git a/app/views/devise/mailer/reset_password_instructions.html.erb b/app/views/devise/mailer/reset_password_instructions.html.erb
new file mode 100644
index 000000000..ae9e888ab
--- /dev/null
+++ b/app/views/devise/mailer/reset_password_instructions.html.erb
@@ -0,0 +1,8 @@
+<p>Hello <%= @resource.email %>!</p>
+
+<p>Someone has requested a link to change your password, and you can do this through the link below.</p>
+
+<p><%= link_to 'Change my password', edit_password_url(@resource, :reset_password_token => @resource.reset_password_token) %></p>
+
+<p>If you didn't request this, please ignore this email.</p>
+<p>Your password won't change until you access the link above and create a new one.</p>
diff --git a/app/views/devise/mailer/unlock_instructions.html.erb b/app/views/devise/mailer/unlock_instructions.html.erb
new file mode 100644
index 000000000..2263c2195
--- /dev/null
+++ b/app/views/devise/mailer/unlock_instructions.html.erb
@@ -0,0 +1,7 @@
+<p>Hello <%= @resource.email %>!</p>
+
+<p>Your account has been locked due to an excessive amount of unsuccessful sign in attempts.</p>
+
+<p>Click the link below to unlock your account:</p>
+
+<p><%= link_to 'Unlock my account', unlock_url(@resource, :unlock_token => @resource.unlock_token) %></p>
diff --git a/app/views/devise/passwords/edit.html.erb b/app/views/devise/passwords/edit.html.erb
new file mode 100644
index 000000000..e75c93710
--- /dev/null
+++ b/app/views/devise/passwords/edit.html.erb
@@ -0,0 +1,16 @@
+<h2>Change your password</h2>
+
+<%= form_for(resource, :as => resource_name, :url => password_path(resource_name), :html => { :method => :put }) do |f| %>
+  <%= devise_error_messages! %>
+  <%= f.hidden_field :reset_password_token %>
+
+  <div><%= f.label :password, "New password" %><br />
+  <%= f.password_field :password %></div>
+
+  <div><%= f.label :password_confirmation, "Confirm new password" %><br />
+  <%= f.password_field :password_confirmation %></div>
+
+  <div><%= f.submit "Change my password" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
\ No newline at end of file
diff --git a/app/views/devise/passwords/new.html.erb b/app/views/devise/passwords/new.html.erb
new file mode 100644
index 000000000..6c21e9fda
--- /dev/null
+++ b/app/views/devise/passwords/new.html.erb
@@ -0,0 +1,12 @@
+<h2>Forgot your password?</h2>
+
+<%= form_for(resource, :as => resource_name, :url => password_path(resource_name), :html => { :method => :post }) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :email %><br />
+  <%= f.email_field :email %></div>
+
+  <div><%= f.submit "Send me reset password instructions" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
\ No newline at end of file
diff --git a/app/views/devise/registrations/edit.html.erb b/app/views/devise/registrations/edit.html.erb
new file mode 100644
index 000000000..ff3805090
--- /dev/null
+++ b/app/views/devise/registrations/edit.html.erb
@@ -0,0 +1,25 @@
+<h2>Edit <%= resource_name.to_s.humanize %></h2>
+
+<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name), :html => { :method => :put }) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :email %><br />
+  <%= f.email_field :email %></div>
+
+  <div><%= f.label :password %> <i>(leave blank if you don't want to change it)</i><br />
+  <%= f.password_field :password %></div>
+
+  <div><%= f.label :password_confirmation %><br />
+  <%= f.password_field :password_confirmation %></div>
+
+  <div><%= f.label :current_password %> <i>(we need your current password to confirm your changes)</i><br />
+  <%= f.password_field :current_password %></div>
+
+  <div><%= f.submit "Update" %></div>
+<% end %>
+
+<h3>Cancel my account</h3>
+
+<p>Unhappy? <%= link_to "Cancel my account", registration_path(resource_name), :confirm => "Are you sure?", :method => :delete %>.</p>
+
+<%= link_to "Back", :back %>
diff --git a/app/views/devise/registrations/new.html.erb b/app/views/devise/registrations/new.html.erb
new file mode 100644
index 000000000..d15e275ad
--- /dev/null
+++ b/app/views/devise/registrations/new.html.erb
@@ -0,0 +1,18 @@
+<h2>Sign up</h2>
+
+<%= form_for(resource, :as => resource_name, :url => registration_path(resource_name)) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :email %><br />
+  <%= f.email_field :email %></div>
+
+  <div><%= f.label :password %><br />
+  <%= f.password_field :password %></div>
+
+  <div><%= f.label :password_confirmation %><br />
+  <%= f.password_field :password_confirmation %></div>
+
+  <div><%= f.submit "Sign up" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
diff --git a/app/views/devise/sessions/new.html.erb b/app/views/devise/sessions/new.html.erb
new file mode 100644
index 000000000..93d15237a
--- /dev/null
+++ b/app/views/devise/sessions/new.html.erb
@@ -0,0 +1,17 @@
+<h2>Sign in</h2>
+
+<%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
+  <div><%= f.label :nccu_ldap_uid %><br />
+  <%= f.text_field :nccu_ldap_uid %></div>
+
+  <div><%= f.label :password %><br />
+  <%= f.password_field :password %></div>
+
+  <% if devise_mapping.rememberable? -%>
+    <div><%= f.check_box :remember_me %> <%= f.label :remember_me %></div>
+  <% end -%>
+
+  <div><%= f.submit "Sign in" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
\ No newline at end of file
diff --git a/app/views/devise/shared/_links.erb b/app/views/devise/shared/_links.erb
new file mode 100644
index 000000000..eab783a4c
--- /dev/null
+++ b/app/views/devise/shared/_links.erb
@@ -0,0 +1,25 @@
+<%- if controller_name != 'sessions' %>
+  <%= link_to "Sign in", new_session_path(resource_name) %><br />
+<% end -%>
+
+<%- if devise_mapping.registerable? && controller_name != 'registrations' %>
+  <%= link_to "Sign up", new_registration_path(resource_name) %><br />
+<% end -%>
+
+<%- if devise_mapping.recoverable? && controller_name != 'passwords' %>
+  <%= link_to "Forgot your password?", new_password_path(resource_name) %><br />
+<% end -%>
+
+<%- if devise_mapping.confirmable? && controller_name != 'confirmations' %>
+  <%= link_to "Didn't receive confirmation instructions?", new_confirmation_path(resource_name) %><br />
+<% end -%>
+
+<%- if devise_mapping.lockable? && resource_class.unlock_strategy_enabled?(:email) && controller_name != 'unlocks' %>
+  <%= link_to "Didn't receive unlock instructions?", new_unlock_path(resource_name) %><br />
+<% end -%>
+
+<%- if devise_mapping.omniauthable? %>
+  <%- resource_class.omniauth_providers.each do |provider| %>
+    <%= link_to "Sign in with #{provider.to_s.titleize}", omniauth_authorize_path(resource_name, provider) %><br />
+  <% end -%>
+<% end -%>
\ No newline at end of file
diff --git a/app/views/devise/unlocks/new.html.erb b/app/views/devise/unlocks/new.html.erb
new file mode 100644
index 000000000..c6cdcfe51
--- /dev/null
+++ b/app/views/devise/unlocks/new.html.erb
@@ -0,0 +1,12 @@
+<h2>Resend unlock instructions</h2>
+
+<%= form_for(resource, :as => resource_name, :url => unlock_path(resource_name), :html => { :method => :post }) do |f| %>
+  <%= devise_error_messages! %>
+
+  <div><%= f.label :email %><br />
+  <%= f.email_field :email %></div>
+
+  <div><%= f.submit "Resend unlock instructions" %></div>
+<% end %>
+
+<%= render :partial => "devise/shared/links" %>
\ No newline at end of file
diff --git a/config/application.rb b/config/application.rb
index 3a7fb91f4..74e0c3994 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -19,7 +19,7 @@ module PrototypeR4
     # Add directories for plugins
     config.paths["vendor/plugins"] += %W(#{config.root}/vendor/built_in_modules)
     config.paths["vendor/plugins"] += %W(#{config.root}/vendor/downloaded_modules)
-    
+    config.paths.app.views << "app/views/devise"
     
     # Settings in config/environments/* take precedence over those specified here.
     # Application configuration should go into files in config/initializers
diff --git a/config/environments/development.rb b/config/environments/development.rb
index d1b671e55..549fc11e6 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -24,21 +24,21 @@ PrototypeR4::Application.configure do
   config.action_dispatch.best_standards_support = :builtin  
 
 
-  config.middleware.use ExceptionNotifier,
-    :email_prefix => "[R4_error]",
-    :sender_address => %{"notifier" <redmine@rulingcom.com>},
-    :exception_recipients => %w{chris@rulingcom.com}
-    
-  config.action_mailer.delivery_method = :smtp
-  config.action_mailer.smtp_settings = {
-    :tls => true,
-    :enable_starttls_auto => true,
-    :address => "smtp.gmail.com",
-    :port => '587',
-    :domain => "smtp.gmail.com",
-    :authentication => "plain",
-    :user_name => "redmine@rulingcom.com",
-    :password => "rulingredmine" }
+  # config.middleware.use ExceptionNotifier,
+  #   :email_prefix => "[R4_error]",
+  #   :sender_address => %{"notifier" <redmine@rulingcom.com>},
+  #   :exception_recipients => %w{chris@rulingcom.com}
+  #   
+  # config.action_mailer.delivery_method = :smtp
+  # config.action_mailer.smtp_settings = {
+  #   :tls => true,
+  #   :enable_starttls_auto => true,
+  #   :address => "smtp.gmail.com",
+  #   :port => '587',
+  #   :domain => "smtp.gmail.com",
+  #   :authentication => "plain",
+  #   :user_name => "redmine@rulingcom.com",
+  #   :password => "rulingredmine" }
 
 end
 
diff --git a/config/initializers/devise.rb b/config/initializers/devise.rb
index 03480dbe1..6e608309d 100644
--- a/config/initializers/devise.rb
+++ b/config/initializers/devise.rb
@@ -21,6 +21,8 @@ Devise.setup do |config|
   # parameters are used only when authenticating and not when retrieving from
   # session. If you need permissions, you should implement that in a before filter.
   # config.authentication_keys = [ :email ]
+  config.authentication_keys = [ :nccu_ldap_uid ]
+  
 
   # Tell if authentication through request.params is enabled. True by default.
   # config.params_authenticatable = true
@@ -139,4 +141,7 @@ Devise.setup do |config|
   #   end
   #   manager.default_strategies(:scope => :user).unshift :twitter_oauth
   # end
+  config.warden do |manager| 
+    manager.default_strategies.unshift :check_nccu_ldap 
+  end
 end
diff --git a/config/initializers/rulingcom_ldap.rb b/config/initializers/rulingcom_ldap.rb
new file mode 100644
index 000000000..28625797c
--- /dev/null
+++ b/config/initializers/rulingcom_ldap.rb
@@ -0,0 +1,19 @@
+# Warden::Strategies.add(:check_nccu_ldap) do
+#   def valid? 
+#     # code here to check whether to try and authenticate using this strategy; 
+#     params['nccu_ldap_uid'] && params['password']
+#   end 
+#   def authenticate!
+#     debugger
+#     user = User.first(conditions:{ nccu_ldap_uid: "901001" })
+#     if user
+#       success! user
+#     else
+#       success! User.create
+#       
+#       # fail!(message)
+#       # User.create 
+#     end
+#   end
+# 
+# end
\ No newline at end of file
diff --git a/config/locales/devise.en.yml b/config/locales/devise.en.yml
index 5e4e43321..8d06c609e 100644
--- a/config/locales/devise.en.yml
+++ b/config/locales/devise.en.yml
@@ -9,6 +9,8 @@ en:
     failure:
       unauthenticated: 'You need to sign in or sign up before continuing.'
       unconfirmed: 'You have to confirm your account before continuing.'
+      ldap_invalid: 'Your LDAP account is invalid'
+      ldap_connection_failed: 'LDAP connection failed'
       locked: 'Your account is locked.'
       invalid: 'Invalid email or password.'
       invalid_token: 'Invalid authentication token.'
diff --git a/config/locales/devise.zh_tw.yml b/config/locales/devise.zh_tw.yml
index bd5c4a432..d36054d54 100644
--- a/config/locales/devise.zh_tw.yml
+++ b/config/locales/devise.zh_tw.yml
@@ -9,6 +9,8 @@ zh_tw:
     failure:
       unauthenticated: '您需要先註冊、登入後才能繼續。'
       unconfirmed: '您的帳號需需要經過確認後，才能繼續。'
+      ldap_invalid: '您的LDAP帳號錯誤'
+      ldap_connection_failed: '與LDAP之間連線異常'
       locked: '您的帳號已被鎖定。'
       invalid: 'Email 或密碼是無效的。'
       invalid_token: '無效的認證代碼。'
diff --git a/config/routes.rb b/config/routes.rb
index cd3921f00..24dd9e95b 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,6 @@
 PrototypeR4::Application.routes.draw do
 
-  devise_for :users
+  devise_for :users,:controllers => {:sessions => 'sessions'}
   
   # routes for sinatra app
   match '/site/set_registered', :to => CentralServerExchangeApp