/usr/share/wireshark/dtds/presence.dtd is in libwireshark-data 2.4.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | <? wireshark:protocol
proto_name="presence"
description="presence XML doc (RFC 3863)"
media="application/cpim-pidf+xml"
hierarchy="yes" ?>
<!ELEMENT presence (tuple)* >
<!ATTLIST presence xmlns CDATA #IMPLIED entity CDATA #REQUIRED>
<!ELEMENT tuple (status? | contact? | note? | timestamp?)* >
<!ATTLIST tuple id CDATA #REQUIRED>
<!ELEMENT status (basic)>
<!ELEMENT basic (#PCDATA)>
<!ELEMENT contact (#PCDATA)>
<!ATTLIST contact priority CDATA #REQUIRED>
<!ELEMENT note (#PCDATA)>
<!ATTLIST note lang CDATA #REQUIRED>
<!ELEMENT timestamp (#PCDATA)>
|