Custom Spring 3.0 Security Filters, Multiple EntryPoints, AuthenticationProvider

Question

I need my security to have the following logic :

Check the presence of a header parameter
Depending on the presence of the paremeter do either a redirect to a login page (if not authenticated) , or check basic authentication token

In both cases, I have the same authentication provider , but I can't have it working. The delegating entrypoint works fine, but I never get into my custom authenticationprovider ...

Here is my security config :

    <security:global-method-security
    secured-annotations="enabled" />

<security:http entry-point-ref="delegatingAuthenticationEntryPoint"
    use-expressions="true" auto-config="false">
    <!-- <security:custom-filter position="FORM_LOGIN_FILTER" -->
    <!-- ref="usernamePasswordAuthenticationFilter" /> -->
    <!-- <security:custom-filter position="BASIC_AUTH_FILTER" -->
    <!-- ref="basicAuthenticationFilter" /> -->
    <security:intercept-url pattern="/login*"
        filters="none" />
    <security:intercept-url pattern="/portimaLogin*"
        filters="none" />
    <security:intercept-url pattern="/**"
        access="isAuthenticated()" />
</security:http>

<bean id="delegatingAuthenticationEntryPoint"
    class="org.springframework.security.web.authentication.DelegatingAuthenticationEntryPoint">
    <constructor-arg>
        <map>
            <entry key="hasHeader('portima','true')" value-ref="PortimaLoginUrlAuthenticationEntryPoint" />
        </map>
    </constructor-arg>
    <property name="defaultEntryPoint" ref="authenticationEntryPoint" />
</bean>

<bean id="usernamePasswordAuthenticationFilter"
    class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="authenticationFailureHandler" ref="authenticationFailureHandler" />
</bean>

<bean id="basicAuthenticationFilter"
    class="org.springframework.security.web.authentication.www.BasicAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="authenticationEntryPoint" ref="authenticationEntryPoint" />
</bean>

<bean id="PortimaLoginUrlAuthenticationEntryPoint"
    class="be.ap.common.security.spring.PortimaLoginUrlAuthenticationEntryPoint">
    <property name="loginFormUrl" value="${portima.login.page}" />
</bean>

<bean id="authenticationEntryPoint"
    class="org.springframework.security.web.authentication.www.BasicAuthenticationEntryPoint">
    <property name="realmName" value="AP" />
</bean>

<security:authentication-manager alias="authenticationManager">
    <security:authentication-provider
        ref="authenticationProvider" />
</security:authentication-manager>

<bean id="authenticationProvider" class="be.ap.common.security.spring.APAuthenticationProvider" />

<bean id="userDetailsService" class="be.ap.common.security.spring.APUserDetailsService" />

Any idea ?

Does your custom AuthenticationProvider implement the `supports()` method correctly? If it returns false for the `UsernamePasswordAuthenticationToken` class, then it will never be asked to process the authentication tokens created by your filters. — zagyi, Feb 12 '13 at 10:31
@Override public boolean supports(Class extends Object> authentication) { return UsernamePasswordAuthenticationToken.class.isAssignableFrom(authentication); } — Olivier Mahieu, Feb 12 '13 at 10:49
It seems then that your declared filters are actually ignored. Refer to the manual (http://static.springsource.org/spring-security/site/docs/3.1.x/reference/ns-config.html#ns-custom-filters) to see how filters created by the namespace config can be replaced. — zagyi, Feb 12 '13 at 12:01

score 12 · Accepted Answer · answered Feb 13 '13 at 13:43

I finally have it to work.

Here is my context file :

    <security:http entry-point-ref="delegatingAuthenticationEntryPoint"
    use-expressions="true">
    <security:custom-filter position="PRE_AUTH_FILTER"
        ref="preAuthenticationFilter" />
    <security:custom-filter position="FORM_LOGIN_FILTER"
        ref="usernamePasswordAuthenticationFilter" />
    <security:custom-filter position="BASIC_AUTH_FILTER"
        ref="basicAuthenticationFilter" />
    <security:intercept-url pattern="/login*"
        filters="none" />
    <security:intercept-url pattern="/portimaLogin*"
        filters="none" />
    <security:intercept-url pattern="/accessDenied*"
        filters="none" />
    <security:intercept-url pattern="/**"
        access="isAuthenticated()" />
    <security:access-denied-handler ref="accessDeniedHandler" />
</security:http>

<!-- Spring Security Custom Filters -->

<bean id="usernamePasswordAuthenticationFilter"
    class="org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="authenticationFailureHandler" ref="authenticationFailureHandler" />
</bean>

<bean id="basicAuthenticationFilter"
    class="org.springframework.security.web.authentication.www.BasicAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager" />
    <property name="authenticationEntryPoint" ref="authenticationEntryPoint" />
</bean>

<bean id="preAuthenticationFilter" class="be.ap.common.security.spring.APPreAuthenticationFilter">
    <property name="authenticationManager" ref="authenticationManager" />
</bean>

<!-- Spring Security Custom EntryPoint -->

<bean id="delegatingAuthenticationEntryPoint"
    class="org.springframework.security.web.authentication.DelegatingAuthenticationEntryPoint">
    <constructor-arg>
        <map>
            <entry key="hasHeader('portima','true')" value-ref="PortimaLoginUrlAuthenticationEntryPoint" />
        </map>
    </constructor-arg>
    <property name="defaultEntryPoint" ref="authenticationEntryPoint" />
</bean>

<bean id="PortimaLoginUrlAuthenticationEntryPoint"
    class="be.ap.common.security.spring.PortimaLoginUrlAuthenticationEntryPoint">
    <property name="loginFormUrl" value="${portima.login.page}" />
</bean>

<bean id="authenticationEntryPoint"
    class="be.ap.common.security.spring.APBasicAuthenticationEntryPoint">
    <property name="realmName" value="AP" />
</bean>
<bean id="accessDeniedHandler"
    class="org.springframework.security.web.access.AccessDeniedHandlerImpl">
    <property name="errorPage" value="/accessDenied" />
</bean>

<bean id="authenticationFailureHandler"
    class="org.springframework.security.web.authentication.ExceptionMappingAuthenticationFailureHandler">
    <property name="exceptionMappings">
        <props>
            <prop
                key="org.springframework.security.authentication.BadCredentialsException">
                /accessDenied
            </prop>
            <prop
                key="org.springframework.security.authentication.CredentialsExpiredException">
                /accessDenied
            </prop>
            <prop key="org.springframework.security.authentication.LockedException">
                /accessDenied
            </prop>
            <prop
                key="org.springframework.security.authentication.DisabledException">
                /accessDenied
            </prop>
        </props>
    </property>
</bean>

<!-- Spring Security Authentication Manager -->

<security:authentication-manager alias="authenticationManager">
    <security:authentication-provider
        ref="authenticationProvider" />
</security:authentication-manager>

<bean id="authenticationProvider" class="be.ap.common.security.spring.APAuthenticationProvider" />

<bean id="userDetailsService" class="be.ap.common.security.spring.APUserDetailsService" />

<!-- for Mock -->
<bean id="SSOService" class="be.ap.security.service.SSOServiceMockImpl" />

As you can see I added a few things too.

To fix it I remorve the auto-config attribute, uncommented the filters, and defined them properly.

For others who wants a quick understanding of what it does , here is the flow :

PRE_AUTH_FILTER will check a SSO like service to prefill the Authentication object (if already authenticated in SSO)
delegatingAuthenticationEntryPoint will then choose how to authenticate depending on the request header
The two ways are :
- custom LoginUrlAuthenticationEntryPoint
- custom BasicAuthenticationEntryPoint

BasicAuth and LoginURLAuth use the same AuthenticationProvider when PreAuth uses my SSO service.

Hope it helps someone else !

Custom Spring 3.0 Security Filters, Multiple EntryPoints, AuthenticationProvider

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