Example usage for org.springframework.security.web FilterChainProxy getFilters

Introduction

In this page you can find the example usage for org.springframework.security.web FilterChainProxy getFilters.

Prototype

public List<Filter> getFilters(String url) 

Source Link

Document

Convenience method, mainly for testing.

Usage

From source file:org.springframework.security.config.http.DefaultFilterChainValidator.java

private void checkLoginPageIsntProtected(FilterChainProxy fcp, List<Filter> filterStack) {
    ExceptionTranslationFilter etf = getFilter(ExceptionTranslationFilter.class, filterStack);

    if (etf == null || !(etf.getAuthenticationEntryPoint() instanceof LoginUrlAuthenticationEntryPoint)) {
        return;/*  ww  w. j a  v a2  s  . c  om*/
    }

    String loginPage = ((LoginUrlAuthenticationEntryPoint) etf.getAuthenticationEntryPoint()).getLoginFormUrl();
    logger.info("Checking whether login URL '" + loginPage + "' is accessible with your configuration");
    FilterInvocation loginRequest = new FilterInvocation(loginPage, "POST");
    List<Filter> filters = null;

    try {
        filters = fcp.getFilters(loginPage);
    } catch (Exception e) {
        // May happen legitimately if a filter-chain request matcher requires more
        // request data than that provided
        // by the dummy request used when creating the filter invocation.
        logger.info("Failed to obtain filter chain information for the login page. Unable to complete check.");
    }

    if (filters == null || filters.isEmpty()) {
        logger.debug("Filter chain is empty for the login page");
        return;
    }

    if (getFilter(DefaultLoginPageGeneratingFilter.class, filters) != null) {
        logger.debug("Default generated login page is in use");
        return;
    }

    FilterSecurityInterceptor fsi = getFilter(FilterSecurityInterceptor.class, filters);
    FilterInvocationSecurityMetadataSource fids = fsi.getSecurityMetadataSource();

    Collection<ConfigAttribute> attributes = fids.getAttributes(loginRequest);

    if (attributes == null) {
        logger.debug("No access attributes defined for login page URL");
        if (fsi.isRejectPublicInvocations()) {
            logger.warn("FilterSecurityInterceptor is configured to reject public invocations."
                    + " Your login page may not be accessible.");
        }
        return;
    }

    AnonymousAuthenticationFilter anonPF = getFilter(AnonymousAuthenticationFilter.class, filters);
    if (anonPF == null) {
        logger.warn("The login page is being protected by the filter chain, but you don't appear to have"
                + " anonymous authentication enabled. This is almost certainly an error.");
        return;
    }

    // Simulate an anonymous access with the supplied attributes.
    AnonymousAuthenticationToken token = new AnonymousAuthenticationToken("key", anonPF.getPrincipal(),
            anonPF.getAuthorities());
    try {
        fsi.getAccessDecisionManager().decide(token, loginRequest, attributes);
    } catch (AccessDeniedException e) {
        logger.warn("Anonymous access to the login page doesn't appear to be enabled. This is almost certainly "
                + "an error. Please check your configuration allows unauthenticated access to the configured "
                + "login page. (Simulated access was rejected: " + e + ")");
    } catch (Exception e) {
        // May happen legitimately if a filter-chain request matcher requires more
        // request data than that provided
        // by the dummy request used when creating the filter invocation. See SEC-1878
        logger.info(
                "Unable to check access to the login page to determine if anonymous access is allowed. This might be an error, but can happen under normal circumstances.",
                e);
    }
}

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