generateserviceticketaction.java

CAS在Tomcat中实现单点登录项目,单点登录（Single Sign On , 简称 SSO ）是目前比较流行的服务于企业业务整合的解决方案之一

/*
 * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
 * distributed with this file and available online at
 * http://www.ja-sig.org/products/cas/overview/license/
 */
package org.jasig.cas.web.flow;

import org.jasig.cas.CentralAuthenticationService;
import org.jasig.cas.authentication.principal.Service;
import org.jasig.cas.ticket.TicketException;
import org.jasig.cas.util.annotation.NotNull;
import org.jasig.cas.web.support.WebUtils;
import org.springframework.util.StringUtils;
import org.springframework.webflow.action.AbstractAction;
import org.springframework.webflow.execution.Event;
import org.springframework.webflow.execution.RequestContext;

/**
 * Action to generate a service ticket for a given Ticket Granting Ticket and
 * Service.
 * 
 * @author Scott Battaglia
 * @version $Revision: 42067 $ $Date: 2007-06-12 15:55:40 -0400 (Tue, 12 Jun 2007) $
 * @since 3.0.4
 */
public final class GenerateServiceTicketAction extends AbstractAction {
    
    /** Instance of CentralAuthenticationService. */
    @NotNull
    private CentralAuthenticationService centralAuthenticationService;

    protected Event doExecute(final RequestContext context) {
        final Service service = WebUtils.getService(context);
        final String ticketGrantingTicket = WebUtils.getTicketGrantingTicketId(context);

        try {
            final String serviceTicketId = this.centralAuthenticationService
                .grantServiceTicket(ticketGrantingTicket,
                    service);
            WebUtils.putServiceTicketInRequestScope(context,
                serviceTicketId);
            return success();
        } catch (final TicketException e) {
            if (isGatewayPresent(context)) {
                return result("gateway");
            }
        }

        return error();
    }

    public void setCentralAuthenticationService(
        final CentralAuthenticationService centralAuthenticationService) {
        this.centralAuthenticationService = centralAuthenticationService;
    }

    protected boolean isGatewayPresent(final RequestContext context) {
        return StringUtils.hasText(context.getExternalContext()
            .getRequestParameterMap().get("gateway"));
    }
}