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Hi

I understand that you already have CAS in one server and your liferay in other server.

First make sure stand alone CAS is working or not.

means access your https://domainname.com/cas/login

enter credentials then you should get login success.. similarly you have to access https://domainname.com/cas/logout and it should log out success.

tell me your cas application context path...

Once cas working fine now we want use CAS for liferay means you will provide user credentils from liferay data base

Open you existed CAS application deploymentContext.xml file which in WEB-INF/lib

create data source for your liferay data base i.e lportal

<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/watsonportal2</value>
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value></value>
</property>
</bean>

and add Authenticate handler indeploymentContext.xml

<property name="authenticationHandlers">
<list>
<bean class="org.jasig.cas.authentication.handler.support.HttpBasedServiceCredentialsAuthenticationHandler"
p:httpClient-ref="httpClient" />
<bean class="org.jasig.cas.adaptors.jdbc.QueryDatabaseAuthenticationSHA1Base64">
<property name="dataSource" ref="dataSource"></property>
<property name="sql" value="SELECT password_ from User_ where lower(emailAddress) = lower(?)"></property>
</bean>
</list>
</property>

and Liferay used SHA1Base64 w need implement class QueryDatabaseAuthenticationSHA1Base64.java

see this post

https://www.liferay.com/community/forums/-/message_boards/message/4505633


once you done this in your existed cas server
now add cas-client-core-3.1.10.jar file in liferay portal tomcat/lib/ext
now configure your CAS server deatils in liferay from Admin screen go to portal setting and enable cass provide cas login and cas log out urls

In my www.liferaysavvy.com go to Cas Problems and Solition download entire zip file from that take cas-server-support-jdbc-3.4.11.jar add to your cas application lib directory in that i implemented QueryDatabaseAuthenticationSHA1Base64.java

and add above authentication handler to your cas deployemnt context for reference see my dowloaded cas-web deploymentContext.xml


and you need to add keystore certificate that you have used for your cas same certificate you need to add for liferay used jre using following command

keytool -import -alias tomcat1 -file ./server1.cert -keypass changeit -keystore "C:/Program Files/Java/jdk1.6.0_43/jre/lib/security/cacerts"

make sure your liferay server using which JRE in that jre/lib/security you have to add keystore file