.NET Cas 认证（基于Cookie）

项目需求：开发系统A 对接客户公司的cas 认证系统 B，实现单点登录

业务场景描述：打开A 系统地址，判断Cookie 是否登录状态，如果未登录，跳转B登录界面；如果已登录，直接获取到cookie 的当前登录用户信息，进入B系统

　　　　　　　（同时满足：其他接入cas 认证的 系统实现sso）

引入Cas 插件dotnetCasClient  

按照下述配置

<configuration>
    <configSections>
    <!--定义casClientConfig-->
        <section name="casClientConfig" type="DotNetCasClient.Configuration.CasClientConfiguration, DotNetCasClient" />
    </configSections>
</configuration>

casServerLoginUrl  cas 系统地址
casServerUrlPrefix cas 系统前缀
serverName　　　　　 A 系统地址

<configuration>
<casClientConfig casServerLoginUrl="http://XXX/cas/login"
casServerUrlPrefix="http://XXX/cas/"
serverName="http://test/login.aspx" notAuthorizedUrl="~/NotAuthorized.aspx"
cookiesRequiredUrl="~/CookiesRequired.aspx"
redirectAfterValidation="true" gateway="false"
renew="false" singleSignOut="true" ticketTimeTolerance="5000"
ticketValidatorName="Cas20" proxyTicketManager="CacheProxyTicketManager"
serviceTicketManager="CacheServiceTicketManager"
gatewayStatusCookieName="CasGatewayStatus" />
</configuration>

WEB_ASPXAUTH  cas 插件获取到的cookie

A 系统进入页逻辑代码

if (HttpHelper.GetCookie("WEB_ASPXAUTH") != null && BasePage.GlobalInfo.UserInfo.UserID > 0)
Response.Redirect(base.BasePage.CorrectUrl("~/SiteMain.aspx"));

//cas登录跳到这里，成功认证cooking，失败返回login.aspx
try
{
if (CasAuthentication.ServiceTicketManager != null)
{

HttpCookie ticketCookie = Request.Cookies[FormsAuthentication.FormsCookieName];

if (ticketCookie != null)
{
SSOInfoBll infoBLL = new SSOInfoBll();
FormsAuthenticationTicket ticket = FormsAuthentication.Decrypt(ticketCookie.Value);
if (ticket != null)
{
CasAuthenticationTicket casTicket = CasAuthentication.ServiceTicketManager.GetTicket(ticket.UserData);
if (casTicket != null)
{
EmpCode = casTicket.Assertion.PrincipalName;

}

}

}

}

}