xml/schema/std.xsd

<?xml version="1.0" encoding="UTF-8" ?>
<xs:schema targetNamespace="http://schema.xml.r00t2.io/std.xsd"
           xmlns="http://schema.xml.r00t2.io/std.xsd"
           xmlns:std="http://schema.xml.r00t2.io/std.xsd"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="unqualified"
           attributeFormDefault="unqualified">

    <xs:simpleType name="t_UUID4">
        <xs:restriction base="xs:token">
            <xs:pattern value="[A-Fa-f0-9]{8}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{4}-[A-Fa-f0-9]{12}"/>
            <xs:whiteSpace value="collapse"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:complexType name="t_cksum">
        <xs:simpleContent>
            <xs:extension base="std:t_cksum_hashtypes">
                <xs:attribute name="hashType" use="required" type="std:t_cksum_hashtypes"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>

    <xs:complexType name="t_cksum_file">
        <xs:simpleContent>
            <xs:extension base="std:t_uri">
                <xs:attribute name="hashType" use="required" type="std:t_cksum_hashtypes"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>

    <xs:simpleType name="t_cksum_hashtypes">
        <xs:restriction base="xs:string">
            <xs:enumeration value="adler32"/>
            <xs:enumeration value="crc32"/>
            <xs:enumeration value="md5"/>
            <xs:enumeration value="sha1"/>
            <xs:enumeration value="sha224"/>
            <xs:enumeration value="sha256"/>
            <xs:enumeration value="sha384"/>
            <xs:enumeration value="sha512"/>
            <xs:enumeration value="blake2b"/>
            <xs:enumeration value="blake22"/>
            <xs:enumeration value="sha3_224"/>
            <xs:enumeration value="sha3_256"/>
            <xs:enumeration value="sha3_384"/>
            <xs:enumeration value="sha3_512"/>
            <xs:enumeration value="shake_128"/>
            <xs:enumeration value="shake_256"/>
            <xs:whiteSpace value="collapse"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:complexType name="t_cmdopts">
        <xs:simpleContent>
            <xs:extension base="xs:string">
                <xs:attribute name="name" use="required" type="xs:token"/>
            </xs:extension>
        </xs:simpleContent>
    </xs:complexType>

    <xs:simpleType name="t_epoch_or_iso">
        <!-- positiveInteger is used for UNIX Epoch. -->
        <xs:union memberTypes="xs:dateTime xs:positiveInteger"/>
    </xs:simpleType>

    <xs:complexType name="t_gpg_keys">
        <xs:sequence minOccurs="1" maxOccurs="unbounded">
            <xs:element name="keyID" minOccurs="1" maxOccurs="unbounded" type="std:t_gpg_key_id"/>
        </xs:sequence>
    </xs:complexType>
    
    <xs:simpleType name="t_gpg_key_id">
        <xs:restriction base="xs:string">
            <xs:pattern value="(auto|default)"/><!-- Program should accept any key IDs it finds (INSECURE) -->
            <xs:pattern value="(0x)?[0-9A-Fa-f]{40}"/><!-- Full key ID -->
            <xs:pattern value="(0x)?[0-9A-Fa-f]{16}"/><!-- Shorthand key ID -->
            <xs:pattern value="(0x)?[0-9A-Fa-f]{8}"/><!-- Legacy shorter shorthand -->
            <xs:pattern value="([0-9A-Fa-f ]{4}){5} ?([0-9A-Fa-f ]{4}){4}[0-9A-Fa-f]{4}"/><!-- Fingerprint -->
            <xs:whiteSpace value="collapse"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:simpleType name="t_gpg_sig">
        <xs:restriction base="xs:string">
            <xs:whiteSpace value="preserve"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:simpleType name="t_nonempty">
        <xs:restriction base="xs:token">
            <xs:minLength value="1"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:simpleType name="t_uri">
        <xs:restriction base="xs:anyURI">
            <xs:pattern value="(https?|ftps?|file)://.+"/>
            <xs:whiteSpace value="collapse"/>
        </xs:restriction>
    </xs:simpleType>

    <xs:complexType name="t_verifyfile">
        <xs:all minOccurs="1">
            <xs:element name="gpg" minOccurs="0" maxOccurs="1" type="std:t_verify_gpg">
                <xs:unique name="uniq_gpg_sig">
                    <xs:selector xpath="std:signature"/>
                    <xs:field xpath="."/>
                </xs:unique>
                <xs:unique name="uniq_gpg_sigfile">
                    <xs:selector xpath="std:signatureFile"/>
                    <xs:field xpath="."/>
                </xs:unique>
            </xs:element>
            <xs:element name="hash" minOccurs="0" maxOccurs="1" type="std:t_verify_cksum"/>
        </xs:all>
    </xs:complexType>

    <xs:complexType name="t_verify_cksum">
        <xs:sequence>
            <xs:element name="checksum" minOccurs="0" maxOccurs="unbounded" type="std:t_cksum"/>
            <xs:element name="checksumFile" minOccurs="0" maxOccurs="unbounded" type="std:t_cksum_file"/>
        </xs:sequence>
    </xs:complexType>

    <xs:complexType name="t_verify_gpg">
        <xs:choice minOccurs="1" maxOccurs="1">
            <xs:element name="signature" minOccurs="0" maxOccurs="unbounded" type="std:t_gpg_sig"/>
            <xs:element name="signatureFile" minOccurs="0" maxOccurs="unbounded" type="std:t_uri"/>
            <xs:element name="gpgKeyIDs" minOccurs="1" maxOccurs="1" type="std:t_gpg_keys">
                <xs:unique name="uniq_key_id">
                    <xs:selector xpath="std:keyID"/>
                    <xs:field xpath="."/>
                </xs:unique>
            </xs:element>
        </xs:choice>
    </xs:complexType>

</xs:schema>