<?xml version="1.0" encoding="UTF-8"?>
<schema
    targetNamespace="urn:oasis:names:tc:SAML:2.0:metadata"
    xmlns:md="urn:oasis:names:tc:SAML:2.0:metadata"
    xmlns:ds="http://www.w3.org/2000/09/xmldsig#"
    xmlns:xenc="http://www.w3.org/2001/04/xmlenc#"
    xmlns:saml="urn:oasis:names:tc:SAML:2.0:assertion"
    xmlns="http://www.w3.org/2001/XMLSchema"
    elementFormDefault="unqualified"
    attributeFormDefault="unqualified"
    blockDefault="substitution"
    version="2.0">
    <import namespace="http://www.w3.org/2000/09/xmldsig#"
        schemaLocation="xmldsig-core-schema.xsd"/>
    <import namespace="http://www.w3.org/2001/04/xmlenc#"
        schemaLocation="xenc-schema.xsd"/>
    <import namespace="urn:oasis:names:tc:SAML:2.0:assertion"
        schemaLocation="saml-schema-assertion-2.0.xsd"/>
    <import namespace="http://www.w3.org/XML/1998/namespace"
        schemaLocation="xml.xsd"/>
    <annotation>
        <documentation>
            Document identifier: saml-schema-metadata-2.0
            Location: http://docs.oasis-open.org/security/saml/v2.0/
            Revision history:
              V2.0 (March, 2005):
                Schema for SAML metadata, first published in SAML 2.0.
        </documentation>
    </annotation>

    <simpleType name="entityIDType">
        <restriction base="anyURI">
            <maxLength value="1024"/>
        </restriction>
    </simpleType>
    <complexType name="localizedNameType">
        <simpleContent>
            <extension base="string">
                <attribute ref="xml:lang" use="required"/>
            </extension>
        </simpleContent>
    </complexType>
    <complexType name="localizedURIType">
        <simpleContent>
            <extension base="anyURI">
                <attribute ref="xml:lang" use="required"/>
            </extension>
        </simpleContent>
    </complexType>
    
    <element name="Extensions" type="md:ExtensionsType"/>
    <complexType final="#all" name="ExtensionsType">
        <sequence>
            <any namespace="##other" processContents="lax" maxOccurs="unbounded"/>
        </sequence>
    </complexType>
    
    <complexType name="EndpointType">
        <sequence>
            <any namespace="##other" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="Binding" type="anyURI" use="required"/>
        <attribute name="Location" type="anyURI" use="required"/>
        <attribute name="ResponseLocation" type="anyURI" use="optional"/>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    
    <complexType name="IndexedEndpointType">
        <complexContent>
            <extension base="md:EndpointType">
                <attribute name="index" type="unsignedShort" use="required"/>
                <attribute name="isDefault" type="boolean" use="optional"/>
            </extension>
        </complexContent>
    </complexType>
    
    <element name="EntitiesDescriptor" type="md:EntitiesDescriptorType"/>
    <complexType name="EntitiesDescriptorType">
        <sequence>
            <element ref="ds:Signature" minOccurs="0"/>
            <element ref="md:Extensions" minOccurs="0"/>
            <choice minOccurs="1" maxOccurs="unbounded">
                <element ref="md:EntityDescriptor"/>
                <element ref="md:EntitiesDescriptor"/>
            </choice>
        </sequence>
        <attribute name="validUntil" type="dateTime" use="optional"/>
        <attribute name="cacheDuration" type="duration" use="optional"/>
        <attribute name="ID" type="ID" use="optional"/>
        <attribute name="Name" type="string" use="optional"/>
    </complexType>

    <element name="EntityDescriptor" type="md:EntityDescriptorType"/>
    <complexType name="EntityDescriptorType">
        <sequence>
            <element ref="ds:Signature" minOccurs="0"/>
            <element ref="md:Extensions" minOccurs="0"/>
            <choice>
                <choice maxOccurs="unbounded">
                    <element ref="md:RoleDescriptor"/>
                    <element ref="md:IDPSSODescriptor"/>
                    <element ref="md:SPSSODescriptor"/>
                    <element ref="md:AuthnAuthorityDescriptor"/>
                    <element ref="md:AttributeAuthorityDescriptor"/>
                    <element ref="md:PDPDescriptor"/>
                </choice>
                <element ref="md:AffiliationDescriptor"/>
            </choice>
            <element ref="md:Organization" minOccurs="0"/>
            <element ref="md:ContactPerson" minOccurs="0" maxOccurs="unbounded"/>
            <element ref="md:AdditionalMetadataLocation" minOccurs="0" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="entityID" type="md:entityIDType" use="required"/>
        <attribute name="validUntil" type="dateTime" use="optional"/>
        <attribute name="cacheDuration" type="duration" use="optional"/>
        <attribute name="ID" type="ID" use="optional"/>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    
    <element name="Organization" type="md:OrganizationType"/>
    <complexType name="OrganizationType">
        <sequence>
            <element ref="md:Extensions" minOccurs="0"/>
            <element ref="md:OrganizationName" maxOccurs="unbounded"/>
            <element ref="md:OrganizationDisplayName" maxOccurs="unbounded"/>
            <element ref="md:OrganizationURL" maxOccurs="unbounded"/>
        </sequence>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    <element name="OrganizationName" type="md:localizedNameType"/>
    <element name="OrganizationDisplayName" type="md:localizedNameType"/>
    <element name="OrganizationURL" type="md:localizedURIType"/>
    <element name="ContactPerson" type="md:ContactType"/>
    <complexType name="ContactType">
        <sequence>
            <element ref="md:Extensions" minOccurs="0"/>
            <element ref="md:Company" minOccurs="0"/>
            <element ref="md:GivenName" minOccurs="0"/>
            <element ref="md:SurName" minOccurs="0"/>
            <element ref="md:EmailAddress" minOccurs="0" maxOccurs="unbounded"/>
            <element ref="md:TelephoneNumber" minOccurs="0" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="contactType" type="md:ContactTypeType" use="required"/>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    <element name="Company" type="string"/>
    <element name="GivenName" type="string"/>
    <element name="SurName" type="string"/>
    <element name="EmailAddress" type="anyURI"/>
    <element name="TelephoneNumber" type="string"/>
    <simpleType name="ContactTypeType">
        <restriction base="string">
            <enumeration value="technical"/>
            <enumeration value="support"/>
            <enumeration value="administrative"/>
            <enumeration value="billing"/>
            <enumeration value="other"/>
        </restriction>
    </simpleType>

    <element name="AdditionalMetadataLocation" type="md:AdditionalMetadataLocationType"/>
    <complexType name="AdditionalMetadataLocationType">
        <simpleContent>
            <extension base="anyURI">
                <attribute name="namespace" type="anyURI" use="required"/>
            </extension>
        </simpleContent>
    </complexType>

    <element name="RoleDescriptor" type="md:RoleDescriptorType"/>
    <complexType name="RoleDescriptorType" abstract="true">
        <sequence>
            <element ref="ds:Signature" minOccurs="0"/>
            <element ref="md:Extensions" minOccurs="0"/>
            <element ref="md:KeyDescriptor" minOccurs="0" maxOccurs="unbounded"/>
            <element ref="md:Organization" minOccurs="0"/>
            <element ref="md:ContactPerson" minOccurs="0" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="ID" type="ID" use="optional"/>
        <attribute name="validUntil" type="dateTime" use="optional"/>
        <attribute name="cacheDuration" type="duration" use="optional"/>
        <attribute name="protocolSupportEnumeration" type="md:anyURIListType" use="required"/>
        <attribute name="errorURL" type="anyURI" use="optional"/>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    <simpleType name="anyURIListType">
        <list itemType="anyURI"/>
    </simpleType>

    <element name="KeyDescriptor" type="md:KeyDescriptorType"/>
    <complexType name="KeyDescriptorType">
        <sequence>
            <element ref="ds:KeyInfo"/>
            <element ref="md:EncryptionMethod" minOccurs="0" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="use" type="md:KeyTypes" use="optional"/>
    </complexType>
    <simpleType name="KeyTypes">
        <restriction base="string">
            <enumeration value="encryption"/>
            <enumeration value="signing"/>
        </restriction>
    </simpleType>
    <element name="EncryptionMethod" type="xenc:EncryptionMethodType"/>
    
    <complexType name="SSODescriptorType" abstract="true">
        <complexContent>
            <extension base="md:RoleDescriptorType">
                <sequence>
                    <element ref="md:ArtifactResolutionService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:SingleLogoutService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:ManageNameIDService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:NameIDFormat" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
            </extension>
        </complexContent>
    </complexType>
    <element name="ArtifactResolutionService" type="md:IndexedEndpointType"/>
    <element name="SingleLogoutService" type="md:EndpointType"/>
    <element name="ManageNameIDService" type="md:EndpointType"/>
    <element name="NameIDFormat" type="anyURI"/>

    <element name="IDPSSODescriptor" type="md:IDPSSODescriptorType"/>
    <complexType name="IDPSSODescriptorType">
        <complexContent>
            <extension base="md:SSODescriptorType">
                <sequence>
                    <element ref="md:SingleSignOnService" maxOccurs="unbounded"/>
                    <element ref="md:NameIDMappingService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:AssertionIDRequestService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:AttributeProfile" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="saml:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
                <attribute name="WantAuthnRequestsSigned" type="boolean" use="optional"/>
            </extension>
        </complexContent>
    </complexType>
    <element name="SingleSignOnService" type="md:EndpointType"/>
    <element name="NameIDMappingService" type="md:EndpointType"/>
    <element name="AssertionIDRequestService" type="md:EndpointType"/>
    <element name="AttributeProfile" type="anyURI"/>
    
    <element name="SPSSODescriptor" type="md:SPSSODescriptorType"/>
    <complexType name="SPSSODescriptorType">
        <complexContent>
            <extension base="md:SSODescriptorType">
                <sequence>
                    <element ref="md:AssertionConsumerService" maxOccurs="unbounded"/>
                    <element ref="md:AttributeConsumingService" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
                <attribute name="AuthnRequestsSigned" type="boolean" use="optional"/>
                <attribute name="WantAssertionsSigned" type="boolean" use="optional"/>
            </extension>
        </complexContent>
    </complexType>
    <element name="AssertionConsumerService" type="md:IndexedEndpointType"/>
    <element name="AttributeConsumingService" type="md:AttributeConsumingServiceType"/>
    <complexType name="AttributeConsumingServiceType">
        <sequence>
            <element ref="md:ServiceName" maxOccurs="unbounded"/>
            <element ref="md:ServiceDescription" minOccurs="0" maxOccurs="unbounded"/>
            <element ref="md:RequestedAttribute" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="index" type="unsignedShort" use="required"/>
        <attribute name="isDefault" type="boolean" use="optional"/>
    </complexType>
    <element name="ServiceName" type="md:localizedNameType"/>
    <element name="ServiceDescription" type="md:localizedNameType"/>
    <element name="RequestedAttribute" type="md:RequestedAttributeType"/>
    <complexType name="RequestedAttributeType">
        <complexContent>
            <extension base="saml:AttributeType">
                <attribute name="isRequired" type="boolean" use="optional"/>
            </extension>
        </complexContent>
    </complexType>
  
    <element name="AuthnAuthorityDescriptor" type="md:AuthnAuthorityDescriptorType"/>
    <complexType name="AuthnAuthorityDescriptorType">
        <complexContent>
            <extension base="md:RoleDescriptorType">
                <sequence>
                    <element ref="md:AuthnQueryService" maxOccurs="unbounded"/>
                    <element ref="md:AssertionIDRequestService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:NameIDFormat" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
            </extension>
        </complexContent>
    </complexType>
    <element name="AuthnQueryService" type="md:EndpointType"/>

    <element name="PDPDescriptor" type="md:PDPDescriptorType"/>
    <complexType name="PDPDescriptorType">
        <complexContent>
            <extension base="md:RoleDescriptorType">
                <sequence>
                    <element ref="md:AuthzService" maxOccurs="unbounded"/>
                    <element ref="md:AssertionIDRequestService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:NameIDFormat" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
            </extension>
        </complexContent>
    </complexType>
    <element name="AuthzService" type="md:EndpointType"/>

    <element name="AttributeAuthorityDescriptor" type="md:AttributeAuthorityDescriptorType"/>
    <complexType name="AttributeAuthorityDescriptorType">
        <complexContent>
            <extension base="md:RoleDescriptorType">
                <sequence>
                    <element ref="md:AttributeService" maxOccurs="unbounded"/>
                    <element ref="md:AssertionIDRequestService" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:NameIDFormat" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="md:AttributeProfile" minOccurs="0" maxOccurs="unbounded"/>
                    <element ref="saml:Attribute" minOccurs="0" maxOccurs="unbounded"/>
                </sequence>
            </extension>
        </complexContent>
    </complexType>
    <element name="AttributeService" type="md:EndpointType"/>
   
    <element name="AffiliationDescriptor" type="md:AffiliationDescriptorType"/>
    <complexType name="AffiliationDescriptorType">
        <sequence>
            <element ref="ds:Signature" minOccurs="0"/>
            <element ref="md:Extensions" minOccurs="0"/>
            <element ref="md:AffiliateMember" maxOccurs="unbounded"/>
        </sequence>
        <attribute name="affiliationOwnerID" type="md:entityIDType" use="required"/>
        <attribute name="validUntil" type="dateTime" use="optional"/>
        <attribute name="cacheDuration" type="duration" use="optional"/>
        <attribute name="ID" type="ID" use="optional"/>
        <anyAttribute namespace="##other" processContents="lax"/>
    </complexType>
    <element name="AffiliateMember" type="md:entityIDType"/>
</schema>
