Java tutorial
/* * Licensed to Jasig under one or more contributor license * agreements. See the NOTICE file distributed with this work * for additional information regarding copyright ownership. * Jasig 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 the following location: * * 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. */ package org.jasig.cas.adaptors.trusted.web.flow; import javax.servlet.http.HttpServletRequest; import org.jasig.cas.adaptors.trusted.authentication.principal.PrincipalBearingCredentials; import org.jasig.cas.authentication.principal.Credentials; import org.jasig.cas.authentication.principal.SimplePrincipal; import org.jasig.cas.web.flow.AbstractNonInteractiveCredentialsAction; import org.jasig.cas.web.support.WebUtils; import org.springframework.util.StringUtils; import org.springframework.webflow.execution.RequestContext; /** * Implementation of the NonInteractiveCredentialsAction that looks for a remote * user that is set in the <code>HttpServletRequest</code> and attempts to * construct a Principal (and thus a PrincipalBearingCredentials). If it doesn't * find one, this class returns and error event which tells the web flow it * could not find any credentials. * * @author Scott Battaglia * @version $Revision$ $Date$ * @since 3.0.5 */ public final class PrincipalFromRequestRemoteUserNonInteractiveCredentialsAction extends AbstractNonInteractiveCredentialsAction { protected Credentials constructCredentialsFromRequest(final RequestContext context) { final HttpServletRequest request = WebUtils.getHttpServletRequest(context); final String remoteUser = request.getRemoteUser(); if (StringUtils.hasText(remoteUser)) { if (logger.isDebugEnabled()) { logger.debug("Remote User [" + remoteUser + "] found in HttpServletRequest"); } return new PrincipalBearingCredentials(new SimplePrincipal(remoteUser)); } if (logger.isDebugEnabled()) { logger.debug("Remote User not found in HttpServletRequest."); } return null; } }