LDAP connection and modified Devise

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