This version is still in development and is not considered stable yet. For the latest stable version, please use Spring Security 6.4.2!

Saml 2.0 Metadata

Spring Security can parse asserting party metadata to produce an AssertingPartyDetails instance as well as publish relying party metadata from a RelyingPartyRegistration instance.

Parsing <saml2:IDPSSODescriptor> metadata

You can parse an asserting party’s metadata using RelyingPartyRegistrations.

When using the OpenSAML vendor support, the resulting AssertingPartyDetails will be of type OpenSamlAssertingPartyDetails. This means you’ll be able to do get the underlying OpenSAML XMLObject by doing the following:

  • Java

  • Kotlin

OpenSamlAssertingPartyDetails details = (OpenSamlAssertingPartyDetails)
        registration.getAssertingPartyDetails();
EntityDescriptor openSamlEntityDescriptor = details.getEntityDescriptor();
val details: OpenSamlAssertingPartyDetails =
        registration.getAssertingPartyDetails() as OpenSamlAssertingPartyDetails;
val openSamlEntityDescriptor: EntityDescriptor = details.getEntityDescriptor();

Producing <saml2:SPSSODescriptor> Metadata

You can publish a metadata endpoint by adding the Saml2MetadataFilter to the filter chain, as you’ll see below:

  • Java

  • Kotlin

DefaultRelyingPartyRegistrationResolver relyingPartyRegistrationResolver =
        new DefaultRelyingPartyRegistrationResolver(this.relyingPartyRegistrationRepository);
Saml2MetadataFilter filter = new Saml2MetadataFilter(
        relyingPartyRegistrationResolver,
        new OpenSamlMetadataResolver());

http
    // ...
    .saml2Login(withDefaults())
    .addFilterBefore(filter, Saml2WebSsoAuthenticationFilter.class);
val relyingPartyRegistrationResolver: Converter<HttpServletRequest, RelyingPartyRegistration> =
    DefaultRelyingPartyRegistrationResolver(this.relyingPartyRegistrationRepository)
val filter = Saml2MetadataFilter(
    relyingPartyRegistrationResolver,
    OpenSamlMetadataResolver()
)

http {
    //...
    saml2Login { }
    addFilterBefore<Saml2WebSsoAuthenticationFilter>(filter)
}

You can use this metadata endpoint to register your relying party with your asserting party. This is often as simple as finding the correct form field to supply the metadata endpoint.

By default, the metadata endpoint is /saml2/service-provider-metadata/{registrationId}. You can change this by calling the setRequestMatcher method on the filter:

  • Java

  • Kotlin

filter.setRequestMatcher(new AntPathRequestMatcher("/saml2/metadata/{registrationId}", "GET"));
filter.setRequestMatcher(AntPathRequestMatcher("/saml2/metadata/{registrationId}", "GET"))

Or, if you have registered a custom relying party registration resolver in the constructor, then you can specify a path without a registrationId hint, like so:

  • Java

  • Kotlin

filter.setRequestMatcher(new AntPathRequestMatcher("/saml2/metadata", "GET"));
filter.setRequestMatcher(AntPathRequestMatcher("/saml2/metadata", "GET"))

Changing the Way a RelyingPartyRegistration Is Looked Up

To apply a custom RelyingPartyRegistrationResolver to the metadata endpoint, you can provide it directly in the filter constructor like so:

  • Java

RelyingPartyRegistrationResolver myRegistrationResolver = ...;
Saml2MetadataFilter metadata = new Saml2MetadataFilter(myRegistrationResolver, new OpenSamlMetadataResolver());

// ...

http.addFilterBefore(metadata, BasicAuthenticationFilter.class);
Kotlin
val myRegistrationResolver: RelyingPartyRegistrationResolver = ...;
val metadata = new Saml2MetadataFilter(myRegistrationResolver, OpenSamlMetadataResolver());

// ...

http.addFilterBefore(metadata, BasicAuthenticationFilter::class.java);

In the event that you are applying a RelyingPartyRegistrationResolver to remove the registrationId from the URI, you must also change the URI in the filter like so:

  • Java

metadata.setRequestMatcher("/saml2/metadata")
Kotlin
metadata.setRequestMatcher("/saml2/metadata")