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From: "J. Brian Hall" <jbrianhallphd@me.com>
To: users@tomcat.apache.org
Subject: Configuring Combined Realm
Date: Mon, 28 Oct 2013 07:46:25 -0400
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How can I configure CombinedRealm in order to: (1) use JDBCRealm for my
webapp with form-based authentication while (2) also using the default
UserDatabaseRealm for the Tomcat Web Application Manager?  I can get one or
the other to work, but not both.  Here are the details of my setup:

 
-OS: Windows 7

-Server: Tomcat 7.0.42

-Database: MySQL 5.6

 
Articles I have used up to this point:

1.       Form-based authentication with Tomcat 7 and MySQL:
http://www.thejavageek.com/2013/07/07/configure-jdbcrealm-jaas-for-mysql-and
-tomcat-7-with-form-based-authentication/

2.       Configuring CombinedRealm:
http://tomcat.apache.org/tomcat-7.0-doc/realm-howto.html#CombinedRealm 

3.       Lastly, note that my database, tables, and Connector/J are setup
per instructions above and I am able to login to my webapp with form-based
authentication when only using JDBCRealm, but I then can't login to the
Tomcat Web Application Manager.

 
I configured the file CATALINA_HOME/config/server.xml in two ways:

 
1.       I've identified the following global resources:

 
<!--Resource for Tomcat Web App Manager-->

<Resource name="UserDatabase"

auth="Container"

type="org.apache.catalina.UserDatabase"

description="User database that can be updated and saved"

factory="org.apache.catalina.users.MemoryUserDatabaseFactory"

pathname="conf/tomcat-users.xml" />

 
<!--Resource for my webapp-->

<Resource name="jdbc/authority"

auth="Container"

type="javax.sql.DataSource"

driverClassName="com.mysql.jdbc.Driver"

description="mySQL Database"

url="jdbc:mysql://localhost:3306/authority"

maxActive="15"

maxidle="3"/>  

 
2.       I've nested Realms within CombinedRealm as follows:

 
<Realm className="org.apache.catalina.realm.CombinedRealm" >

 
<!-- LockOutRealm to prevent brute-force attack. -->

                <Realm className="org.apache.catalina.realm.LockOutRealm"
failureCount="3" lockoutTime="3600"/>

                <!-- Default Realm for Tomcat Application Manager -->

                <Realm
className="org.apache.catalina.realm.UserDatabaseRealm"
resourceName="UserDatabase"/>

 
                <!-- JDBC Realm for my webapp. -->

                <Realm className="org.apache.catalina.realm.JDBCRealm"

                                driverName="com.mysql.jdbc.Driver"

 
connectionURL="jdbc:mysql://localhost:3306/authority"

                                connectionName="root"

                                connectionPassword="root"

                                userTable="users"

                                userNameCol="user_name"

                                userCredCol="user_pass"

                                userRoleTable="user_roles"

                                roleNameCol="role_name"/>

</Realm>

 
Lastly, I configured my CATALINA_HOME/webapps/[mywebapp]/WEB-INF/web.xml
file as follows:

 
<?xml version="1.0" encoding="ISO-8859-1"?>

<web-app 

                version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" 

                xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

                xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

 
<display-name>webapp</display-name>

<description>Form-Based Authentication with mySQL</description>

 
<resource-ref>

                <description>mySQL Database</description>

                <res-ref-name>jdbc/authority</res-ref-name>

                <res-type>javax.sql.DataSource</res-type>

                <res-auth>Container</res-auth>

</resource-ref>

 
<security-constraint>

                <web-resource-collection>

                <web-resource-name>Protected</web-resource-name>

                                <url-pattern>/*</url-pattern>

                                <http-method>PUT</http-method>

                                <http-method>GET</http-method>

                                <http-method>POST</http-method>

                </web-resource-collection>

    <auth-constraint>

                <role-name>webappuser</role-name>

                </auth-constraint>

                <user-data-constraint>

 
<transport-guarantee>NONE</transport-guarantee>

                </user-data-constraint>

</security-constraint>

 
<login-config>

                <auth-method>FORM</auth-method>

                <form-login-config>

                <form-login-page>/login.jsp</form-login-page>

                <form-error-page>/error.jsp</form-error-page>

        </form-login-config>

</login-config>

                                
</web-app>

 
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