Class AbstractPreAuthenticatedProcessingFilter

  • All Implemented Interfaces:
    javax.servlet.Filter, org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanNameAware, org.springframework.beans.factory.DisposableBean, org.springframework.beans.factory.InitializingBean, org.springframework.context.ApplicationEventPublisherAware, org.springframework.context.EnvironmentAware, org.springframework.core.env.EnvironmentCapable, org.springframework.web.context.ServletContextAware
    Direct Known Subclasses:
    J2eePreAuthenticatedProcessingFilter, RequestAttributeAuthenticationFilter, RequestHeaderAuthenticationFilter, WebSpherePreAuthenticatedProcessingFilter, X509AuthenticationFilter

    public abstract class AbstractPreAuthenticatedProcessingFilter
    extends org.springframework.web.filter.GenericFilterBean
    implements org.springframework.context.ApplicationEventPublisherAware
    Base class for processing filters that handle pre-authenticated authentication requests, where it is assumed that the principal has already been authenticated by an external system.

    The purpose is then only to extract the necessary information on the principal from the incoming request, rather than to authenticate them. External authentication systems may provide this information via request data such as headers or cookies which the pre-authentication system can extract. It is assumed that the external system is responsible for the accuracy of the data and preventing the submission of forged values. Subclasses must implement the getPreAuthenticatedPrincipal() and getPreAuthenticatedCredentials() methods. Subclasses of this filter are typically used in combination with a PreAuthenticatedAuthenticationProvider, which is used to load additional data for the user. This provider will reject null credentials, so the getPreAuthenticatedCredentials(javax.servlet.http.HttpServletRequest) method should not return null for a valid principal.

    If the security context already contains an Authentication object (either from a invocation of the filter or because of some other authentication mechanism), the filter will do nothing by default. You can force it to check for a change in the principal by setting the checkForPrincipalChanges property.

    By default, the filter chain will proceed when an authentication attempt fails in order to allow other authentication mechanisms to process the request. To reject the credentials immediately, set the continueFilterChainOnUnsuccessfulAuthentication flag to false. The exception raised by the AuthenticationManager will the be re-thrown. Note that this will not affect cases where the principal returned by getPreAuthenticatedPrincipal(javax.servlet.http.HttpServletRequest) is null, when the chain will still proceed as normal.

    • Constructor Detail

      • AbstractPreAuthenticatedProcessingFilter

        public AbstractPreAuthenticatedProcessingFilter()
    • Method Detail

      • afterPropertiesSet

        public void afterPropertiesSet()
        Check whether all required properties have been set.
        Specified by:
        afterPropertiesSet in interface org.springframework.beans.factory.InitializingBean
        afterPropertiesSet in class org.springframework.web.filter.GenericFilterBean
      • doFilter

        public void doFilter​(javax.servlet.ServletRequest request,
                             javax.servlet.ServletResponse response,
                             javax.servlet.FilterChain chain)
        Try to authenticate a pre-authenticated user with Spring Security if the user has not yet been authenticated.
        Specified by:
        doFilter in interface javax.servlet.Filter
      • successfulAuthentication

        protected void successfulAuthentication​(javax.servlet.http.HttpServletRequest request,
                                                javax.servlet.http.HttpServletResponse response,
                                                Authentication authResult)
        Puts the Authentication instance returned by the authentication manager into the secure context.
      • unsuccessfulAuthentication

        protected void unsuccessfulAuthentication​(javax.servlet.http.HttpServletRequest request,
                                                  javax.servlet.http.HttpServletResponse response,
                                                  AuthenticationException failed)
        Ensures the authentication object in the secure context is set to null when authentication fails.

        Caches the failure exception as a request attribute

      • setApplicationEventPublisher

        public void setApplicationEventPublisher​(org.springframework.context.ApplicationEventPublisher anApplicationEventPublisher)
        Specified by:
        setApplicationEventPublisher in interface org.springframework.context.ApplicationEventPublisherAware
        anApplicationEventPublisher - The ApplicationEventPublisher to use
      • setAuthenticationDetailsSource

        public void setAuthenticationDetailsSource​(AuthenticationDetailsSource<javax.servlet.http.HttpServletRequest,​?> authenticationDetailsSource)
        authenticationDetailsSource - The AuthenticationDetailsSource to use
      • getAuthenticationDetailsSource

        protected AuthenticationDetailsSource<javax.servlet.http.HttpServletRequest,​?> getAuthenticationDetailsSource()
      • setAuthenticationManager

        public void setAuthenticationManager​(AuthenticationManager authenticationManager)
        authenticationManager - The AuthenticationManager to use
      • setContinueFilterChainOnUnsuccessfulAuthentication

        public void setContinueFilterChainOnUnsuccessfulAuthentication​(boolean shouldContinue)
        If set to true (the default), any AuthenticationException raised by the AuthenticationManager will be swallowed, and the request will be allowed to proceed, potentially using alternative authentication mechanisms. If false, authentication failure will result in an immediate exception.
        shouldContinue - set to true to allow the request to proceed after a failed authentication.
      • setCheckForPrincipalChanges

        public void setCheckForPrincipalChanges​(boolean checkForPrincipalChanges)
        If set, the pre-authenticated principal will be checked on each request and compared against the name of the current Authentication object. A check to determine if Authentication.getPrincipal() is equal to the principal will also be performed. If a change is detected, the user will be reauthenticated.
        checkForPrincipalChanges -
      • setInvalidateSessionOnPrincipalChange

        public void setInvalidateSessionOnPrincipalChange​(boolean invalidateSessionOnPrincipalChange)
        If checkForPrincipalChanges is set, and a change of principal is detected, determines whether any existing session should be invalidated before proceeding to authenticate the new principal.
        invalidateSessionOnPrincipalChange - false to retain the existing session. Defaults to true.
      • setAuthenticationSuccessHandler

        public void setAuthenticationSuccessHandler​(AuthenticationSuccessHandler authenticationSuccessHandler)
        Sets the strategy used to handle a successful authentication.
      • setAuthenticationFailureHandler

        public void setAuthenticationFailureHandler​(AuthenticationFailureHandler authenticationFailureHandler)
        Sets the strategy used to handle a failed authentication.
      • setRequiresAuthenticationRequestMatcher

        public void setRequiresAuthenticationRequestMatcher​(RequestMatcher requiresAuthenticationRequestMatcher)
        Sets the request matcher to check whether to proceed the request further.
      • getPreAuthenticatedPrincipal

        protected abstract java.lang.Object getPreAuthenticatedPrincipal​(javax.servlet.http.HttpServletRequest request)
        Override to extract the principal information from the current request
      • getPreAuthenticatedCredentials

        protected abstract java.lang.Object getPreAuthenticatedCredentials​(javax.servlet.http.HttpServletRequest request)
        Override to extract the credentials (if applicable) from the current request. Should not return null for a valid principal, though some implementations may return a dummy value.