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<?xml version="1.0" encoding="UTF-8"?>

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:etsi="http://uri.etsi.org/03280/common/2017/07" xmlns:common="http://uri.etsi.org/03120/common/2016/02/Common" xmlns:core="http://uri.etsi.org/03120/common/2019/10/Core" xmlns="http://uri.etsi.org/03120/common/2022/07/PayloadModSS2" targetNamespace="http://uri.etsi.org/03120/common/2022/07/PayloadModSS2" elementFormDefault="qualified" attributeFormDefault="unqualified">

  <xs:import namespace="http://uri.etsi.org/03120/common/2016/02/Common"/>

  <xs:import namespace="http://uri.etsi.org/03120/common/2019/10/Core"/>

  <xs:import namespace="http://uri.etsi.org/03280/common/2017/07"/>

  <xs:complexType name="PayloadModificationProfileObject">

      <xs:complexContent>

          <xs:extension base="core:HI1Object">

              <xs:sequence>

                  <xs:group ref="PayloadModificationProfileObjectGroup"/>

              </xs:sequence>

          </xs:extension>

      </xs:complexContent>

  </xs:complexType>

  <xs:group name="PayloadModificationProfileObjectGroup"><!--May be able to get rid of this level-->

      <xs:sequence>

          <xs:element name="PayloadModificationProfileName" type="etsi:ShortString" minOccurs="0"/>

          <xs:element name="PayloadModifications" type="ListOfPayloadModifications"/>

      </xs:sequence>

  </xs:group>

  <xs:complexType name="ListOfPayloadModifications">

      <xs:sequence>

          <xs:element name="PayloadModification" type="ModificationType" minOccurs="1" maxOccurs="unbounded"/>

      </xs:sequence>

  </xs:complexType>

  <xs:complexType name="ModificationType">

      <xs:choice>

          <xs:element name="sIPHeader" type="SIPHeaderModification"/>

          <xs:element name="sIPBody" type="SIPBodyModification"/>

          <xs:element name="XML" type="XMLModification"/>

      </xs:choice>

  </xs:complexType>

<!--============================-->

<!--= SIP HEADER MODIFICATIONS =-->

<!--============================-->

  <xs:complexType name="SIPHeaderModification">

    <xs:sequence>

      <xs:element name="ListOfSIPHeaders" type="ListOfSIPHeaders"/>

      <!-- Probably need something to select only part of the header, but for now, I will make a specific action for this specific case (redactAccessInfo)-->

      <xs:element name="ListOfSIPHeaderModificationActions" type="ListOfSIPHeaderModificationActions"/>

    </xs:sequence>

  </xs:complexType>

  <xs:complexType name="ListOfSIPHeaders">

      <xs:sequence maxOccurs="unbounded">

          <xs:element name="SIPHeaderSelection" type="SIPHeaderSelection"/>

      </xs:sequence>

  </xs:complexType>

  <xs:complexType name="SIPHeaderSelection">

      <xs:choice>

          <xs:element name="HeaderName" type="xs:string"/>

      </xs:choice>

  </xs:complexType>

  <xs:complexType name="ListOfSIPHeaderModificationActions">

      <xs:sequence maxOccurs="unbounded">

          <xs:element name="SIPHeaderModificationAction" type="SIPHeaderModificationAction"/>

      </xs:sequence>

  </xs:complexType>

  <xs:complexType name="SIPHeaderModificationAction">

    <xs:choice>

      <xs:element name="redactIP" type="EmptyElement"/>

      <xs:element name="remove" type="EmptyElement"/>

      <xs:element name="replaceWithCharacters" type="xs:string"/>

      <xs:element name="redactAccessInfo" type="EmptyElement"/>

    </xs:choice>

  </xs:complexType>

<!--==========================-->

<!--= SIP BODY MODIFICATIONS =-->

<!--==========================-->

  <xs:complexType name="SIPBodyModification">

      <xs:sequence>

          <xs:element name="ListOfSIPBodies" type="ListOfSIPBodies"/>

          <xs:element name="ListOfSIPBodyModificationActions" type="ListOfSIPBodyModificationActions"/>

      </xs:sequence>

  </xs:complexType>

  <xs:complexType name="ListOfSIPBodies">

      <xs:sequence maxOccurs="unbounded">

          <xs:element name="SIPBodySelection" type="SIPBodySelection"/>

      </xs:sequence>

  </xs:complexType>

  <xs:complexType name="SIPBodySelection">

      <xs:choice>

        <xs:element name="ContentType" type="xs:string"/>

      </xs:choice>

  </xs:complexType>

    <xs:complexType name="ListOfSIPBodyModificationActions">

        <xs:sequence maxOccurs="unbounded">

            <xs:element name="SIPBodyModificationAction" type="SIPBodyModificationAction"/>

        </xs:sequence>

    </xs:complexType>

    <xs:complexType name="SIPBodyModificationAction">

        <xs:choice>

            <xs:element name="predefined" type="PredefinedPayloadModification"/>

            <xs:element name="remove" type="EmptyElement"/>

            <xs:element name="replaceWithCharacters" type="xs:string"/>

            <xs:element name="replaceWithOctets" type="xs:hexBinary"/>

            <xs:element name="replaceWithBits" type="BitString"/>

        </xs:choice>

    </xs:complexType>

    <xs:complexType name="PredefinedPayloadModification">

        <xs:sequence>

            <xs:element name="ObjectIdentifier" type="core:ObjectIdentifier"/>

        </xs:sequence>

    </xs:complexType>

<!--=====================-->

<!--= XML MODIFICATIONS =-->

<!--=====================-->

  <xs:complexType name="XMLModification">

    <xs:sequence>

      <xs:element name="ListOfXPath" type="ListOfXPath"/>

      <xs:element name="ListOfXMLModificationActions" type="ListOfXMLModificationActions"/>

    </xs:sequence>

  </xs:complexType>

  <xs:complexType name="ListOfXPath">

    <xs:sequence maxOccurs="unbounded">

      <xs:element name="XPathSelection" type="XPathSelection"/>

    </xs:sequence>

  </xs:complexType>

  <xs:complexType name="XPathSelection">

    <xs:choice>

      <xs:element name="XPathString" type="xs:string"/>

    </xs:choice>

  </xs:complexType>

  <xs:complexType name="ListOfXMLModificationActions">

    <xs:sequence maxOccurs="unbounded">

      <xs:element name="XMLModificationAction" type="XMLModificationAction"/>

    </xs:sequence>

  </xs:complexType>

  <xs:complexType name="XMLModificationAction">

    <xs:choice>

      <xs:element name="predefined" type="PredefinedPayloadModification"/>

      <xs:element name="remove" type="EmptyElement"/>

      <xs:element name="replaceWithCharacters" type="xs:string"/>

    </xs:choice>

  </xs:complexType>

<!--======================-->

<!--= COMMON DEFINITIONS =-->

<!--======================-->

    <xs:simpleType name="EmptyElement">

        <xs:restriction base="xs:string">

            <xs:enumeration value=""></xs:enumeration>

        </xs:restriction>

    </xs:simpleType>

    <xs:simpleType name="BitString">

        <xs:restriction base="xs:token">

            <xs:pattern value="[0-1]{0,}"/>

        </xs:restriction>

    </xs:simpleType>

</xs:schema>