package org.apache.turbine.modules.actions;

 /*

  * Licensed to the Apache Software Foundation (ASF) under one

  * or more contributor license agreements.  See the NOTICE file

  * distributed with this work for additional information

  * regarding copyright ownership.  The ASF licenses this file

  * to you under the Apache License, Version 2.0 (the

  * "License"); you may not use this file except in compliance

  * with the License.  You may obtain a copy of the License at

  *

  *   http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an

  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY

  * KIND, either express or implied.  See the License for the

  * specific language governing permissions and limitations

  * under the License.

  */

 import org.apache.commons.lang.StringUtils;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 import org.apache.fulcrum.security.util.DataBackendException;

 import org.apache.fulcrum.security.util.FulcrumSecurityException;

 import org.apache.turbine.TurbineConstants;

 import org.apache.turbine.annotation.TurbineConfiguration;

 import org.apache.turbine.annotation.TurbineService;

 import org.apache.turbine.modules.Action;

 import org.apache.turbine.om.security.User;

 import org.apache.turbine.pipeline.PipelineData;

 import org.apache.turbine.services.security.SecurityService;

 import org.apache.turbine.util.RunData;

 import org.apache.turbine.util.TurbineException;

 /**

  * This is where we authenticate the user logging into the system

  * against a user in the database. If the user exists in the database

  * that users last login time will be updated.

  *

  * @author <a href="mailto:mbryson@mont.mindspring.com">Dave Bryson</a>

  * @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a>

  * @author <a href="mailto:quintonm@bellsouth.net">Quinton McCombs</a>

  * @author <a href="mailto:peter@courcoux.biz">Peter Courcoux</a>

  * @version $Id: LoginUser.java 1812628 2017-10-19 12:34:25Z gk $

  */

 public class LoginUser

         extends Action

 {

     /** CGI Parameter for the user name */

     public static final String CGI_USERNAME = "username";

     /** CGI Parameter for the password */

     public static final String CGI_PASSWORD = "password";

     /** Logging */

     private static Log log = LogFactory.getLog(LoginUser.class);

     /** Injected service instance */

     @TurbineService

     private SecurityService security;

     @TurbineConfiguration( TurbineConstants.LOGIN_ERROR )

     private String loginError = "";

     @TurbineConfiguration( TurbineConstants.TEMPLATE_LOGIN )

     private String templateLogin;

     @TurbineConfiguration( TurbineConstants.SCREEN_LOGIN )

     private String screenLogin;

     /**

      * Updates the user's LastLogin timestamp, sets their state to

      * "logged in" and calls RunData.setUser() .  If the user cannot

      * be authenticated (database error?) the user is assigned

      * anonymous status and, if tr.props contains a TEMPLATE_LOGIN,

      * the screenTemplate is set to this, otherwise the screen is set

      * to SCREEN_LOGIN

      *

      * @param     pipelineData Turbine information.

      * @throws FulcrumSecurityException could not get instance of the

      *            anonymous user

      */

     @Override

     public void doPerform(PipelineData pipelineData)

             throws FulcrumSecurityException

     {

         RunData data = getRunData(pipelineData);

         String username = data.getParameters().getString(CGI_USERNAME, "");

         String password = data.getParameters().getString(CGI_PASSWORD, "");

         if (StringUtils.isEmpty(username))

         {

             return;

         }

         try

         {

                 if (username.equals(security.getAnonymousUser().getName()))

             {

                 throw new TurbineException("Anonymous user cannot login");

             }

             // Authenticate the user and get the object.

             User user = security.getAuthenticatedUser(username, password);

             // Store the user object.

             data.setUser(user);

             // Mark the user as being logged in.

             user.setHasLoggedIn(Boolean.TRUE);

             // Set the last_login date in the database.

             user.updateLastLogin();

             // This only happens if the user is valid; otherwise, we

             // will get a valueBound in the User object when we don't

             // want to because the username is not set yet.  Save the

             // User object into the session.

             data.save();

             /*

              * If the setPage("template.vm") method has not

              * been used in the template to authenticate the

              * user (usually Login.vm), then the user will

              * be forwarded to the template that is specified

              * by the "template.home" property as listed in

              * TR.props for the webapp.

              */

         }

         catch (Exception e)

         {

             if (e instanceof DataBackendException)

             {

                 log.error(e);

             }

             // Set Error Message and clean out the user.

             data.setMessage(loginError);

             User anonymousUser = security.getAnonymousUser();

             data.setUser(anonymousUser);

             if (StringUtils.isNotEmpty(templateLogin))

             {

                 // We're running in a templating solution

                 data.setScreenTemplate(templateLogin);

             }

             else

             {

                 data.setScreen(screenLogin);

             }

         }

     }

 }