CASifying your web application

CAS used for Single Sign On

Download required jar files for CAS integration.

Configuration in web.xml

 <!--CAS Integration-->
    <filter>
        <filter-name>CAS Authentication Filter</filter-name>
        <filter-class>org.jasig.cas.client.authentication.AuthenticationFilter</filter-class>
        <init-param>
            <param-name>casServerLoginUrl</param-name>
            <param-value>https://li419-10.members.linode.com:8443/cas/login</param-value>
        </init-param>
        <init-param>
            <param-name>serverName</param-name>           
            <param-value>http://li419-101.members.linode.com:8080</param-value>
        </init-param>
        <init-param>
            <param-name>renew</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <param-name>gateway</param-name>
            <param-value>false</param-value>
        </init-param>
    </filter>
    <filter>
        <filter-name>CAS Validation Filter</filter-name>
        <filter-class>org.jasig.cas.client.validation.Saml11TicketValidationFilter</filter-class>
        <init-param>
            <param-name>casServerUrlPrefix</param-name>
            <param-value>https://li419-xx.members.linode.com:8443/cas</param-value>
        </init-param>
        <init-param>
            <param-name>serverName</param-name>
            <param-value>http://li419-xxx.members.linode.com:8080</param-value>
        </init-param>
        <init-param>
            <param-name>redirectAfterValidation</param-name>
            <param-value>true</param-value>
        </init-param>
        <init-param>
            <param-name>tolerance</param-name>
            <param-value>5000</param-value>
        </init-param>
    </filter>
    <filter>
        <filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
        <filter-class>org.jasig.cas.client.util.HttpServletRequestWrapperFilter</filter-class>
    </filter>
<filter>
        <filter-name>CAS Assertion Thread Local Filter</filter-name>
        <filter-class>org.jasig.cas.client.util.AssertionThreadLocalFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>CAS Authentication Filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>CAS Validation Filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    <filter-mapping>
        <filter-name>CAS HttpServletRequest Wrapper Filter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>


Accessing username in JSF

HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
        String username = request.getRemoteUser();