acegi 作为 yale cas认证服务器的客户端在springside项目中的应用

First, Set SpringSide's web.xml, we use Acegi CAS Filter:

< filter-mapping >
< filter-name > hibernateFilter </ filter-name >
< url-pattern > /j_acegi_cas_security_check </ url-pattern >
</ filter-mapping >

We Should Set Main ACEGI application Context：
1) filterChainProxy should add a cas filter as Acegi's Sample, but here, we reuse
authenticationProcessingFilter, which we act as cas client filter.

< bean id ="filterChainProxy"
class ="org.acegisecurity.util.FilterChainProxy" >
< property name ="filterInvocationDefinitionSource" >
< value >
CONVERT_URL_TO_LOWERCASE_BEFORE_COMPARISON
PATTERN_TYPE_APACHE_ANT
/**=httpSessionContextIntegrationFilter,anonymousProcessingFilter,authenticationProcessingFilter,rememberMeProcessingFilter,logoutFilter,channelProcessingFilter,basicProcessingFilter,securityContextHolderAwareRequestFilter,exceptionTranslationFilter,filterInvocationInterceptor
</ value >
</ property >
</ bean >

2) authenticationProcessingFilter, of course, play the most important role in this
applicationContext_acegi.xml.
In SpringSide, /admin is protected resource, so defaultTargetUrl protected it
andall those request to the target url must be authenticated by authenticationManager.

<beanid="authenticationProcessingFilter"class="org.acegisecurity.ui.cas.CasProcessingFilter">
<propertyname="authenticationManager"ref="authenticationManager"/>
<propertyname="authenticationFailureUrl">
<value>/security/login.jsp?login_error=1</value>
</property>
<propertyname="defaultTargetUrl">
<value>/admin/</value>
</property>
<propertyname="filterProcessesUrl">
<value>/j_acegi_cas_security_check</value>
</property>
<propertyname="rememberMeServices"ref="rememberMeServices"/>
<propertyname="exceptionMappings">
<value>
org.acegisecurity.userdetails.UsernameNotFoundException=/security/login.jsp?login_error=user_not_found_error
org.acegisecurity.BadCredentialsException=/security/login.jsp?login_error=user_psw_error
org.acegisecurity.concurrent.ConcurrentLoginException=/security/login.jsp?login_error=too_many_user_error
</value>
</property>
</bean>

3) Then, we set all the needed beans in CAS Filter

<!--=========AcegiasaCASClient的配置=============-->
<beanid="exceptionTranslationFilter"class="org.acegisecurity.ui.ExceptionTranslationFilter">
<propertyname="authenticationEntryPoint">
<reflocal="casProcessingFilterEntryPoint"/>
</property>
</bean>

<!--casconfig-->
<beanid="casProcessingFilterEntryPoint"class="org.acegisecurity.ui.cas.CasProcessingFilterEntryPoint">
<propertyname="loginUrl"><value>https://sourcesite:8443/cas/login</value></property>
<propertyname="serviceProperties"><reflocal="serviceProperties"/></property>
</bean>

<beanid="authenticationManager"class="org.acegisecurity.providers.ProviderManager">
<propertyname="providers">
<list>
<reflocal="casAuthenticationProvider"/>
</list>
</property>
</bean>

<beanid="casAuthenticationProvider"class="org.acegisecurity.providers.cas.CasAuthenticationProvider">
<propertyname="casAuthoritiesPopulator"><refbean="casAuthoritiesPopulator"/></property>
<propertyname="casProxyDecider"><reflocal="casProxyDecider"/></property>
<propertyname="ticketValidator"><reflocal="casProxyTicketValidator"/></property>
<propertyname="statelessTicketCache"><reflocal="statelessTicketCache"/></property>
<propertyname="key"><value>my_password_for_this_auth_provider_only</value></property>
</bean>
<beanid="casProxyTicketValidator"class="org.acegisecurity.providers.cas.ticketvalidator.CasProxyTicketValidator">
<propertyname="casValidate"><value>https://sourcesite:8443/cas/proxyValidate</value></property>
<propertyname="serviceProperties"><reflocal="serviceProperties"/></property>
</bean>
<!--
<beanid="casProxyDecider"class="org.acegisecurity.providers.cas.proxy.AcceptAnyCasProxy"/>
-->
<beanid="casProxyDecider"class="org.acegisecurity.providers.cas.proxy.RejectProxyTickets"/>

<beanid="serviceProperties"class="org.acegisecurity.ui.cas.ServiceProperties">
<propertyname="service">
<value>http://gzug:8080/springside/j_acegi_cas_security_check</value>
</property>
<propertyname="sendRenew">
<value>false</value>
</property>
</bean>

<beanid="statelessTicketCache"class="org.acegisecurity.providers.cas.cache.EhCacheBasedTicketCache">
<propertyname="cache">
<beanclass="org.springframework.cache.ehcache.EhCacheFactoryBean">
<propertyname="cacheManager">
<beanclass="org.springframework.cache.ehcache.EhCacheManagerFactoryBean"/>
</property>
<propertyname="cacheName"value="userCache"/>
</bean>
</property>
</bean>

<beanid="casAuthoritiesPopulator"class="org.acegisecurity.providers.cas.populator.DaoCasAuthoritiesPopulator">
<propertyname="userDetailsService"><reflocal="jdbcDaoImpl"/></property>
</bean>

<beanid="casProcessingFilter"class="org.acegisecurity.ui.cas.CasProcessingFilter">
<propertyname="authenticationManager"><reflocal="authenticationManager"/></property>
<propertyname="authenticationFailureUrl"><value>/casfailed.jsp</value></property>
<propertyname="defaultTargetUrl"><value>/</value></property>
<propertyname="filterProcessesUrl"><value>/j_acegi_cas_security_check</value></property>
</bean>

casProcessingFilterEntryPoint is very critical,
loginUrl is the CAS Server's /login url, you should set up your CAS Server(2.0 or 3.0) and config for
those JKS keystore after enable SSL in Tomcat(Tomcat 5.5/conf/server.xml) and place the cacerts that
have the CAS Server's public cert to Acegi Client's JDK/jre/lib/security/
Check serviceProperties to make sure thatSpringSide Service url is config as /j_acegi_cas_security_check

because Yale CAS use ticket cache for SSO impl, so we should config for statelessTicketCache
Just use springframework's ehcache for cacheManager.

SpringSide use jdbcDaoImpl which perform database authentication. So I am very happy to use it
ascasAuthoritiesPopulator , which will set use detail for the user. And these info are very useful for
application authorization.

<beanid="jdbcDaoImpl"
class="org.acegisecurity.userdetails.jdbc.JdbcDaoImpl">
<propertyname="dataSource"ref="dataSource"/>
<propertyname="usersByUsernameQuery">
<value>
selectloginid,passwd,1fromss_userswherestatus='1'andloginid=?
</value>
</property>
<propertyname="authoritiesByUsernameQuery">
<value>
selectu.loginid,p.namefromss_usersu,ss_rolesr,ss_permissions
p,ss_user_roleur,ss_role_permisrpwhereu.id=ur.user_idand
r.id=ur.role_idandp.id=rp.permis_idand
r.id=rp.role_idandp.status='1'andu.loginid=?
</value>
</property>
</bean>

There is little difference between casclient 2.0.12 and Acegi, right?

Note that in my env, gzug:8080/springside is bookstore webapp
and sourcesite:8443 is the CAS 3 Server.

Hope for suggestion.....