/**
    * This file Copyright (c) 2003-2010 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.jaas.sp.jcr;
  
  import info.magnolia.cms.security.MgnlUser;
  import info.magnolia.cms.security.SecuritySupport;
  import info.magnolia.cms.security.User;
  import info.magnolia.cms.security.UserManager;
  import info.magnolia.cms.security.auth.Entity;
  import info.magnolia.jaas.principal.EntityImpl;
  import info.magnolia.jaas.sp.AbstractLoginModule;
  import info.magnolia.jaas.sp.UserAwareLoginModule;
  import org.apache.commons.lang.StringUtils;
  
  import javax.security.auth.login.FailedLoginException;
  import javax.security.auth.login.LoginException;
  import javax.security.auth.login.AccountNotFoundException;
  import javax.security.auth.login.AccountLockedException;
  import java.util.Iterator;
  
  
  /**
   * @author Sameer Charles $Id: JCRAuthenticationModule.java 32667 2010-03-13 00:37:06Z gjoseph $
   */
  public class JCRAuthenticationModule extends AbstractLoginModule implements UserAwareLoginModule {
      protected User user;
  
      /**
       * Releases all associated memory.
       */
      public boolean release() {
          return true;
      }
  
      /**
       * Checks is the credentials exist in the repository.
       * @throws LoginException or specific subclasses (which will be handled further for user feedback)
       */
      public void validateUser() throws LoginException {
          initUser();
  
          if (this.user == null) {
              throw new AccountNotFoundException("User account " + this.name + " not found.");
          }
  
          matchPassword();
  
          if (!this.user.isEnabled()) {
              throw new AccountLockedException("User account " + this.name + " is locked.");
          }
  
          if (!UserManager.ANONYMOUS_USER.equals(user.getName()) && user instanceof MgnlUser)
          {
              ((MgnlUser) user).setLastAccess();
          }
      }
  
      protected void initUser() {
          user = getUserManager().getUser(name);
      }
  
      protected void matchPassword() throws LoginException {
          String serverPassword = user.getPassword();
  
          if (StringUtils.isEmpty(serverPassword)) {
              throw new FailedLoginException("we do not allow users with no password");
          }
  
         if (!StringUtils.equals(serverPassword, new String(this.pswd))) {
             throw new FailedLoginException("passwords do not match");
         }
     }
 
     /**
      * Override this to support any configured/non-configured user manager.
      */
     public UserManager getUserManager() {
         SecuritySupport securitySupport = SecuritySupport.Factory.getInstance();
         return securitySupport.getUserManager(this.realm);
     }
 
     /**
      * Set user details.
      */
     public void setEntity() {
         EntityImpl entity = new EntityImpl();
         entity.addProperty(Entity.LANGUAGE, this.user.getLanguage());
         entity.addProperty(Entity.NAME, this.user.getName());
 
         String fullName = this.user.getProperty("title");
         if(fullName != null){
             entity.addProperty(Entity.FULL_NAME, fullName);
         }
         entity.addProperty(Entity.PASSWORD, new String(this.pswd));
         this.subject.getPrincipals().add(entity);
 
         collectGroupNames();
         collectRoleNames();
     }
 
     /**
      * Set access control list from the user, roles and groups.
      */
     public void setACL() {
     }
 
     /**
      * Extract all the configured roles from the given node. (which can be the user node or a group node)
      */
     public void collectRoleNames() {
         for (Iterator iter = this.user.getAllRoles().iterator(); iter.hasNext();) {
             addRoleName((String)iter.next());
         }
     }
 
     /**
      * Extract all the configured groups from the given node. (which can be the user node or a group node)
      */
     public void collectGroupNames() {
         for (Iterator iter = this.user.getAllGroups().iterator(); iter.hasNext();) {
             addGroupName((String) iter.next());
         }
     }
 
     public User getUser() {
         return user;
     }
 
 }