<!-- A Relax NG schema for the libvirt network XML format -->
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
         datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
  <start>
    <ref name="network"/>
  </start>

  <define name="network">

    <element name="network">
      <interleave>

        <!-- The name of the network, used to refer to it through the API
             and in virsh -->
        <element name="name">
          <text/>
        </element>

        <!-- <uuid> element -->
        <optional>
          <element name="uuid"><text/></element>
        </optional>

        <!-- <bridge> element -->
        <optional>
          <!-- The name of the network to be set up; this will back
               the network on the host -->
          <element name="bridge">
            <optional>
              <attribute name="name">
                <text/>
              </attribute>
            </optional>

            <optional>
              <attribute name="stp">
                <choice>
                  <value>on</value>
                  <value>off</value>
                </choice>
              </attribute>
            </optional>

            <optional>
              <attribute name="delay">
                <data type="integer"/>
              </attribute>
            </optional>

          </element>
        </optional>

        <!-- <forward> element -->
        <optional>
          <!-- The device through which the bridge is connected to the
               rest of the network -->
          <element name="forward">
            <optional>
              <attribute name="dev">
                <text/>
              </attribute>
            </optional>

            <optional>
              <attribute name="mode">
                <choice>
                  <value>nat</value>
                  <value>route</value>
                </choice>
              </attribute>
            </optional>
          </element>
        </optional>

        <!-- <domain> element -->
        <optional>
          <element name="domain">
            <attribute name="name"><text/></attribute>
          </element>
        </optional>

        <!-- <ip> element -->
        <zeroOrMore>
          <!-- The IP element sets up NAT'ing and an optional DHCP server
               local to the host. -->
          <element name="ip">
            <optional>
              <attribute name="address"><ref name="ip-addr"/></attribute>
            </optional>
            <optional>
              <choice>
                <attribute name="netmask"><ref name="ipv4-addr"/></attribute>
                <attribute name="prefix"><ref name="ip-prefix"/></attribute>
              </choice>
            </optional>
            <optional>
              <attribute name="family"><ref name="addr-family"/></attribute>
            </optional>
            <optional>
              <element name="tftp">
                <attribute name="root"><text/></attribute>
              </element>
            </optional>
            <optional>
              <!-- Define the range(s) of IP addresses that the DHCP
                   server should hand out -->
              <element name="dhcp">
                <zeroOrMore>
                  <element name="range">
                    <attribute name="start"><ref name="ipv4-addr"/></attribute>
                    <attribute name="end"><ref name="ipv4-addr"/></attribute>
                  </element>
                </zeroOrMore>
                <zeroOrMore>
                  <element name="host">
                    <attribute name="mac"><ref name="mac-addr"/></attribute>
                    <attribute name="name"><text/></attribute>
                    <attribute name="ip"><ref name="ipv4-addr"/></attribute>
                  </element>
                </zeroOrMore>
                <optional>
                  <element name="bootp">
                    <attribute name="file"><text/></attribute>
                    <optional>
                      <attribute name="server"><text/></attribute>
                    </optional>
                  </element>
                </optional>
              </element>
            </optional>
          </element>
        </zeroOrMore>
      </interleave>
    </element>
  </define>

  <!-- An ipv4 "dotted quad" address -->
  <define name='ipv4-addr'>
    <data type='string'>
      <param name="pattern">(((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9]))\.){3}((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9]))</param>
    </data>
  </define>

  <!-- Based on http://blog.mes-stats.fr/2008/10/09/regex-ipv4-et-ipv6 -->
  <define name='ipv6-addr'>
    <data type='string'>
      <!-- To understand this better, take apart the toplevel '|'s -->
      <param name="pattern">(([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}(((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9]))\.){3}((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9])))|(([0-9A-Fa-f]{1,4}:){0,5}:(((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9]))\.){3}((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9])))|(::([0-9A-Fa-f]{1,4}:){0,5}(((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9]))\.){3}((25[0-5])|(2[0-4][0-9])|(1[0-9]{2})|([1-9][0-9])|([0-9])))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:)</param>
    </data>
  </define>

  <define name='ip-addr'>
    <choice>
      <ref name='ipv4-addr'/>
      <ref name='ipv6-addr'/>
    </choice>
  </define>

  <define name='ip-prefix'>
    <data type='unsignedInt'>
      <param name="maxInclusive">128</param>
    </data>
  </define>

  <define name='addr-family'>
    <data type='string'>
      <param name="pattern">(ipv4)|(ipv6)</param>
    </data>
  </define>

  <!-- a 6 byte MAC address in ASCII-hex format, eg "12:34:56:78:9A:BC" -->
  <define name='mac-addr'>
    <data type='string'>
      <param name="pattern">([a-fA-F0-9]{2}:){5}[a-fA-F0-9]{2}</param>
    </data>
  </define>

</grammar>
