simplewebapplicationserviceimpl.java

来自「CAS在Tomcat中实现单点登录项目,单点登录（Single Sign On 」· Java 代码 · 共 85 行

/*
 * Copyright 2007 The JA-SIG Collaborative. All rights reserved. See license
 * distributed with this file and available online at
 * http://www.uportal.org/license.html
 */
package org.jasig.cas.authentication.principal;

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.jasig.cas.authentication.principal.Response.ResponseType;
import org.springframework.util.StringUtils;

/**
 * Represents a service which wishes to use the CAS protocol.
 * 
 * @author Scott Battaglia
 * @version $Revision: 1.3 $ $Date: 2007/04/24 18:19:22 $
 * @since 3.1
 */
public final class SimpleWebApplicationServiceImpl extends
    AbstractWebApplicationService {

    private static final String CONST_PARAM_SERVICE = "service";

    private static final String CONST_PARAM_TARGET_SERVICE = "targetService";

    private static final String CONST_PARAM_TICKET = "ticket";

    private static final String CONST_PARAM_METHOD = "method";

    private final ResponseType responseType;

    /**
     * Unique Id for Serialization
     */
    private static final long serialVersionUID = 8334068957483758042L;
    
    public SimpleWebApplicationServiceImpl(final String id) {
        this(id, id, null, null);
    }

    private SimpleWebApplicationServiceImpl(final String id,
        final String originalUrl, final String artifactId,
        final ResponseType responseType) {
        super(id, originalUrl, artifactId);
        this.responseType = responseType;
    }

    public static SimpleWebApplicationServiceImpl createServiceFrom(
        final HttpServletRequest request) {
        final String targetService = request
            .getParameter(CONST_PARAM_TARGET_SERVICE);
        final String method = request.getParameter(CONST_PARAM_METHOD);
        final String serviceToUse = StringUtils.hasText(targetService)
            ? targetService : request.getParameter(CONST_PARAM_SERVICE);

        if (!StringUtils.hasText(serviceToUse)) {
            return null;
        }

        final String id = cleanupUrl(serviceToUse);
        final String artifactId = request.getParameter(CONST_PARAM_TICKET);

        return new SimpleWebApplicationServiceImpl(id, serviceToUse,
            artifactId, "POST".equals(method) ? ResponseType.POST
                : ResponseType.REDIRECT);
    }

    public Response getResponse(final String ticketId) {
        final Map<String, String> parameters = new HashMap<String, String>();

        if (StringUtils.hasText(ticketId)) {
            parameters.put(CONST_PARAM_TICKET, ticketId);
        }

        if (ResponseType.POST == this.responseType) {
            return Response.getPostResponse(getOriginalUrl(), parameters);
        }
        return Response.getRedirectResponse(getOriginalUrl(), parameters);
    }
}