org.beangle.security.web.auth.preauth.j2ee.RemoteUsernameSource.java Source code

Introduction

Here is the source code for org.beangle.security.web.auth.preauth.j2ee.RemoteUsernameSource.java

Source

/* Copyright c 2005-2012.
 * Licensed under GNU  LESSER General Public License, Version 3.
 * http://www.gnu.org/licenses
 */
package org.beangle.security.web.auth.preauth.j2ee;

import java.security.Principal;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.beangle.security.web.auth.preauth.UsernameSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Source of the username supplied with pre-authenticated authentication request
 * as remote user header value. Optionally can strip prefix: "domain\\username"
 * -> "username", if <tt>stripPrefix</tt> property value is "true".
 */
public class RemoteUsernameSource implements UsernameSource {
    /**
     * Logger for this class and subclasses
     */
    protected final Logger logger = LoggerFactory.getLogger(this.getClass());

    private boolean stripPrefix = true;

    public String obtainUsername(HttpServletRequest request) {
        String username = null;
        Principal p = request.getUserPrincipal();
        if (null != p) {
            username = p.getName();
        }
        if (StringUtils.isEmpty(username)) {
            username = request.getRemoteUser();
        }
        if (null != username && isStripPrefix()) {
            username = stripPrefix(username);
        }
        if (null != username) {
            logger.debug("Obtained username=[{}] from remote user", username);
        }
        return username;
    }

    private String stripPrefix(String userName) {
        if (StringUtils.isNotBlank(userName)) {
            int index = userName.lastIndexOf("\\");
            if (index != -1) {
                userName = userName.substring(index + 1);
            }
        }
        return userName;
    }

    /**
     * @return the stripPrefix
     */
    public boolean isStripPrefix() {
        return stripPrefix;
    }

    /**
     * @param stripPrefix
     *            the stripPrefix to set
     */
    public void setStripPrefix(boolean stripPrefix) {
        this.stripPrefix = stripPrefix;
    }
}