Saml 2.0 元数据

Spring Security 可以解析断言方元数据以生成AssertingPartyMetadata实例以及从RelyingPartyRegistration实例。spring-doc.cadn.net.cn

解析<saml2:IDPSSODescriptor>元数据

您可以解析断言方的元数据用RelyingPartyRegistrations.spring-doc.cadn.net.cn

使用 OpenSAML 供应商支持时，生成的AssertingPartyMetadata将为OpenSamlAssertingPartyDetails. 这意味着您将能够通过执行以下作来获取底层 OpenSAML XMLObject：spring-doc.cadn.net.cn

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

用AssertingPartyMetadataRepository

您也可以比RelyingPartyRegistrations通过使用AssertingPartyMetadataRepository，一个只允许检索断言方元数据的接口。spring-doc.cadn.net.cn

这允许三个有价值的功能：spring-doc.cadn.net.cn

例如OpenSaml4AssertingPartyMetadataRepository使用 OpenSAML 的MetadataResolver和 API，其实现定期以过期感知方式刷新底层元数据。spring-doc.cadn.net.cn

这意味着您现在可以创建一个可刷新的RelyingPartyRegistrationRepository只需几行代码：spring-doc.cadn.net.cn

@Component
public class RefreshableRelyingPartyRegistrationRepository
        implements IterableRelyingPartyRegistrationRepository {

	private final AssertingPartyMetadataRepository metadata =
            OpenSamlAssertingPartyMetadataRepository
                .fromTrustedMetadataLocation("https://idp.example.org/metadata").build();

	@Override
    public RelyingPartyRegistration findByRegistrationId(String registrationId) {
		AssertingPartyMetadata metadata = this.metadata.findByEntityId(registrationId);
        if (metadata == null) {
            return null;
        }
		return applyRelyingParty(metadata);
    }

	@Override
    public Iterator<RelyingPartyRegistration> iterator() {
		return StreamSupport.stream(this.metadata.spliterator(), false)
            .map(this::applyRelyingParty).iterator();
    }

	private RelyingPartyRegistration applyRelyingParty(AssertingPartyMetadata metadata) {
		return RelyingPartyRegistration.withAssertingPartyMetadata(metadata)
            // apply any relying party configuration
            .build();
	}

}
@Component
class RefreshableRelyingPartyRegistrationRepository : IterableRelyingPartyRegistrationRepository {

    private val metadata: AssertingPartyMetadataRepository =
        OpenSamlAssertingPartyMetadataRepository.fromTrustedMetadataLocation(
            "https://idp.example.org/metadata").build()

    fun findByRegistrationId(registrationId:String?): RelyingPartyRegistration {
        val metadata = this.metadata.findByEntityId(registrationId)
        if (metadata == null) {
            return null
        }
        return applyRelyingParty(metadata)
    }

    fun iterator(): Iterator<RelyingPartyRegistration> {
        return StreamSupport.stream(this.metadata.spliterator(), false)
            .map(this::applyRelyingParty).iterator()
    }

    private fun applyRelyingParty(metadata: AssertingPartyMetadata): RelyingPartyRegistration {
        val details: AssertingPartyMetadata = metadata as AssertingPartyMetadata
        return RelyingPartyRegistration.withAssertingPartyMetadata(details)
            // apply any relying party configuration
            .build()
    }
 }
OpenSaml4AssertingPartyMetadataRepository还附带了一个构造函数，因此您可以提供自定义MetadataResolver.由于底层的MetadataResolver正在执行过期和刷新，如果您直接使用构造函数，则只能通过提供执行此作的实现来获得这些功能。

验证元数据签名

您还可以使用OpenSaml4AssertingPartyMetadataRepository通过提供适当的Saml2X509Credentials 中执行如下作：spring-doc.cadn.net.cn

OpenSamlAssertingPartyMetadataRepository.withMetadataLocation("https://idp.example.org/metadata")
    .verificationCredentials((c) -> c.add(myVerificationCredential))
    .build();
OpenSamlAssertingPartyMetadataRepository.withMetadataLocation("https://idp.example.org/metadata")
    .verificationCredentials({ c : Collection<Saml2X509Credential> ->
        c.add(myVerificationCredential) })
    .build()
如果未提供凭据，则组件将不会执行签名验证。

生产<saml2:SPSSODescriptor>元数据

您可以使用saml2MetadataDSL 方法，如下所示：spring-doc.cadn.net.cn

http
    // ...
    .saml2Login(withDefaults())
    .saml2Metadata(withDefaults());
http {
    //...
    saml2Login { }
    saml2Metadata { }
}

您可以使用此元数据终端节点向断言方注册您的信赖方。 这通常就像找到正确的表单字段来提供元数据端点一样简单。spring-doc.cadn.net.cn

默认情况下，元数据端点为/saml2/metadata，尽管它也响应/saml2/metadata/{registrationId}和/saml2/service-provider-metadata/{registrationId}.spring-doc.cadn.net.cn

您可以通过调用metadataUrl方法：spring-doc.cadn.net.cn

.saml2Metadata((saml2) -> saml2.metadataUrl("/saml/metadata"))
saml2Metadata {
	metadataUrl = "/saml/metadata"
}

改变方式RelyingPartyRegistration被查找

如果你有不同的策略来确定哪个RelyingPartyRegistration要使用，您可以配置自己的Saml2MetadataResponseResolver如下所示：spring-doc.cadn.net.cn

@Bean
Saml2MetadataResponseResolver metadataResponseResolver(RelyingPartyRegistrationRepository registrations) {
	RequestMatcherMetadataResponseResolver metadata = new RequestMatcherMetadataResponseResolver(
			(id) -> registrations.findByRegistrationId("relying-party"));
	metadata.setMetadataFilename("metadata.xml");
	return metadata;
}
@Bean
fun metadataResponseResolver(val registrations: RelyingPartyRegistrationRepository): Saml2MetadataResponseResolver {
    val metadata = new RequestMatcherMetadataResponseResolver(
			id: String -> registrations.findByRegistrationId("relying-party"))
	metadata.setMetadataFilename("metadata.xml")
	return metadata
}