edu.uiowa.icts.delegate.PreviousUsername Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of spring-utils Show documentation
ICTS Utilities for Spring Hibernate Projects
The newest version!
package edu.uiowa.icts.delegate;

/*
 * #%L
 * spring-utils
 * %%
 * Copyright (C) 2010 - 2015 University of Iowa Institute for Clinical and Translational Science (ICTS)
 * %%
 * Licensed 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.
 * #L%
 */

import java.io.IOException;
import java.util.Collection;

import javax.servlet.jsp.JspException;
import javax.servlet.jsp.tagext.TagSupport;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.web.authentication.switchuser.SwitchUserFilter;
import org.springframework.security.web.authentication.switchuser.SwitchUserGrantedAuthority;

/**
 * PreviousUsername class.
 *
 * @author rrlorent
 * @version $Id: $
 */
@SuppressWarnings( "serial" )
public class PreviousUsername extends TagSupport {

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

	/**
	 * doStartTag.
	 *
	 * @return a int.
	 * @throws javax.servlet.jsp.JspException if any.
	 */
	public int doStartTag() throws JspException {
		try {
			log.debug( pageContext == null );
			pageContext.getOut().write( username() );
		} catch ( IOException e ) {
			log.error( "problem writing username", e );
		}
		return EVAL_PAGE;
	}

	/**
	 * username.
	 *
	 * @return a {@link java.lang.String} object.
	 */
	public String username() {
		try {
			Authentication currentAuth = SecurityContextHolder.getContext().getAuthentication();
			if ( currentAuth != null ) {
				Collection currentAuthorities = currentAuth.getAuthorities();
				for ( GrantedAuthority ga : currentAuthorities ) {
					if ( ( ga instanceof SwitchUserGrantedAuthority ) && ( ga.getAuthority().equals( SwitchUserFilter.ROLE_PREVIOUS_ADMINISTRATOR ) ) ) {
						return ( (SwitchUserGrantedAuthority) ga ).getSource().getName();
					}
				}
				return currentAuth.getName();
			}
		} catch ( Exception e ) {
			log.error( "oops", e );
		}
		return "anonymousUser";
	}
}