mirror of
https://github.com/moparisthebest/xeps
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Merge branches 'feature/xep-0368', 'feature/protoxep-occupant-id' and 'feature/protoxep-reactions'
This commit is contained in:
Jonas Schäfer
commit
de98527aad
212
inbox/occupant-id.xml
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212
inbox/occupant-id.xml
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<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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||||||
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<title>Anonymous unique occupant identifiers for MUCs</title>
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||||||
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<abstract>This specification defines a method that allows clients to identify a MUC participant across reconnects and renames. It thus prevents impersonification of anonymous users.</abstract>
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&LEGALNOTICE;
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||||||
|
<number>xxxx</number>
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||||||
|
<status>ProtoXEP</status>
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||||||
|
<type>Standards Track</type>
|
||||||
|
<sig>Standards</sig>
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||||||
|
<approver>Council</approver>
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|
<dependencies>
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||||||
|
<spec>XMPP Core</spec>
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||||||
|
<spec>XEP-0001</spec>
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||||||
|
<spec>XEP-0030</spec>
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||||||
|
<spec>XEP-0045</spec>
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|
</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>occupant-id</shortname>
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<author>
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<firstname>Marvin</firstname>
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<surname>Wissfeld</surname>
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<email>xsf@larma.de</email>
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<jid>jabber@larma.de</jid>
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</author>
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||||||
|
<revision>
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||||||
|
<version>0.0.1</version>
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<date>2019-07-13</date>
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|
<initials>mw</initials>
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|
<remark><p>First draft.</p></remark>
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|
</revision>
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|
</header>
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|
<section1 topic='Introduction' anchor='intro'>
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<p>
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&xep0045; allows the creation of semi-anonymous multi-user text chats where
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the real JID of a occupant can not be discovered by other MUC
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occupants except moderators. As such users can freely join with using
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any identity of their choice, allowing to impersonate users while they are
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not online.
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</p>
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<p>
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With recent standard extensions, it becomes more relevant to be able to
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know if the occupant that sends one message is the same as the sender
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of another message, for example for &xep0308;. At the same time it becomes
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harder for clients to determine this, for example due to the use of &xep0313;
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with MUCs.
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</p>
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<p>
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This specification defines a method to combat issues arising out of the
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anonymity of MUC occupants while at the same time ensuring their privacy
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by not leaking their real JID to other occupants.
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</p>
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|
</section1>
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<section1 topic='Discovering support' anchor='disco'>
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<p>
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If a MUC implements anonymous unique occupant identifiers, it MUST
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specify the 'urn:xmpp:occupant-id:0' feature in its service discovery
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information features as specified in &xep0030;.
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</p>
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|
<example caption='Client requests information about a MUC'><![CDATA[
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<iq type='get'
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to='coven@chat.shakespeare.lit'
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from='hag66@shakespeare.lit/pda'
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||||||
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id='info1'>
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||||||
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<query xmlns='http://jabber.org/protocol/disco#info'/>
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|
</iq>]]></example>
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<example caption='MUC advertises support for anonymous unique occupant identifiers'><![CDATA[
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|
<iq type='result'
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to='hag66@shakespeare.lit/pda'
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|
from='coven@chat.shakespeare.lit'
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id='info1'>
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||||||
|
<query xmlns='http://jabber.org/protocol/disco#info'>
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||||||
|
...
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<feature var='urn:xmpp:occupant-id:0'/>
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||||||
|
...
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|
</query>
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|
</iq>]]></example>
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</section1>
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<section1 topic='Use Cases' anchor='usecases'>
|
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|
<section2 topic="Entering a Room" anchor="enter">
|
||||||
|
<p>
|
||||||
|
When a user enters a room, they send a presence to claim the nickname in
|
||||||
|
the MUC. A MUC that supports anonymous unique occupant identifiers
|
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|
attaches an <occupant-id> element to the presence sent to all
|
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|
occupants in the room.
|
||||||
|
</p>
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||||||
|
<example caption="Client sends a message"><![CDATA[
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<presence
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from='hag66@shakespeare.lit/pda'
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id='n13mt3l'
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||||||
|
to='coven@chat.shakespeare.lit/thirdwitch'>
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|
<x xmlns='http://jabber.org/protocol/muc'/>
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|
</presence>]]></example>
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||||||
|
<example caption="Service Sends New Occupant's Presence to All Occupants"><![CDATA[
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|
<presence
|
||||||
|
from='coven@chat.shakespeare.lit/thirdwitch'
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||||||
|
id='27C55F89-1C6A-459A-9EB5-77690145D624'
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to='crone1@shakespeare.lit/desktop'>
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<x xmlns='http://jabber.org/protocol/muc#user' />
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|
<occupant-id xmlns="urn:xmpp:occupant-id:0" id="dd72603deec90a38ba552f7c68cbcc61bca202cd" />
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|
</presence>]]></example>
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||||||
|
</section2>
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<section2 topic="Sending a Message to All Occupants" anchor="message">
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<p>
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An occupant sends a message to all other occupants in the room by
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sending a message of type "groupchat" to the <room@service>. A MUC
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supporting anonymous unique occupant identifiers attaches an
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<occupant-id> element to the message sent to all occupants in the
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|
room.
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|
</p>
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|
<example caption="Occupant Sends a Message to All Occupants"><![CDATA[
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<message
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from='hag66@shakespeare.lit/pda'
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id='hysf1v37'
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||||||
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to='coven@chat.shakespeare.lit'
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||||||
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type='groupchat'>
|
||||||
|
<body>Harpier cries: 'tis time, 'tis time.</body>
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|
</message>]]></example>
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||||||
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<example caption="Service Reflects Message to All Occupants"><![CDATA[
|
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|
<message
|
||||||
|
from='coven@chat.shakespeare.lit/thirdwitch'
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id='hysf1v37'
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||||||
|
to='crone1@shakespeare.lit/desktop'
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|
type='groupchat'>
|
||||||
|
<body>Harpier cries: 'tis time, 'tis time.</body>
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<occupant-id xmlns="urn:xmpp:occupant-id:0" id="dd72603deec90a38ba552f7c68cbcc61bca202cd" />
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||||||
|
</message>]]></example>
|
||||||
|
</section2>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='Business Rules' anchor='rules'>
|
||||||
|
<p>
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||||||
|
Messages and presences MUST NOT contain more then one <occupant-id>
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|
element. If the message or presence received by the MUC service already
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||||||
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contains <occupant-id> element, the MUC service MUST replace such
|
||||||
|
element before reflecting the message or presence including it.
|
||||||
|
</p>
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||||||
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<p>
|
||||||
|
The <occupant-id> element MUST be attached to every message and every
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presence sent by a MUC. This includes messages sent as part of the
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|
discussion history after joining a room, requested via &xep0313; or any
|
||||||
|
other means.
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||||||
|
</p>
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||||||
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<p>
|
||||||
|
The <occupant-id> element MUST be ignored if support for the feature
|
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|
is not announced via &xep0030;, as malicious clients might forge occupant
|
||||||
|
identifiers if the room does not support them.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
A MUC service MAY allow the administrator to enable or disable occupant
|
||||||
|
identifiers on a per-room basis. If occupant identifiers are force enabled
|
||||||
|
for all rooms on a MUC service, it SHOULD additionally specify the
|
||||||
|
'urn:xmpp:occupant-id:0' feature on the MUC service. It MUST NOT specify
|
||||||
|
the feature on the service otherwise.
|
||||||
|
</p>
|
||||||
|
<section2 topic='Occupant ID generation' anchor='id-generation'>
|
||||||
|
<p>
|
||||||
|
The occupant identifier MUST be generated such that it is stable. This
|
||||||
|
means that if a user joins the same room a second time, the occupant
|
||||||
|
identifier MUST be the same as was assigned the first time. A user in
|
||||||
|
the sense of this specification is identified by its real bare JID.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
The occupant identifier MUST be generated such that it is unique. This
|
||||||
|
means that it MUST be sufficiently improbable that one user is able to
|
||||||
|
re-create the occupant identifier of another user.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
The occupant identifier MUST be generated such that it is anonymous. This
|
||||||
|
means that it MUST be sufficiently hard to determine the real bare JID of
|
||||||
|
an occupant from its occupant identifier. Additionally, a MUC service
|
||||||
|
SHOULD generate the identifier such that the occupant identifier of a user
|
||||||
|
in one room of the service does not match the occupant identifier of the
|
||||||
|
same user in another room of the same service.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
The occupant identifier MUST have a maximum length of 128 characters. The
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|
recipient MUST consider the occupant identifier to be an opaque string.
|
||||||
|
</p>
|
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|
<p>
|
||||||
|
One way to ensure these properties is to generate a private secret key for
|
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|
every room and use an HMAC algorithm with a sufficiently secure hash
|
||||||
|
function to generate the occupant identifier from the real bare JID and
|
||||||
|
that secret key. This procedure ensures all the required properties with
|
||||||
|
minimal server side storage requirements.
|
||||||
|
</p>
|
||||||
|
</section2>
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||||||
|
</section1>
|
||||||
|
<section1 topic='Security Considerations' anchor='security'>
|
||||||
|
<p>
|
||||||
|
If a MUC uses occupant identifiers, nickname changes will be visible to
|
||||||
|
all occupants of the room. Clients MAY warn users about this circumstance
|
||||||
|
before joining the room.
|
||||||
|
</p>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='IANA Considerations' anchor='iana'>
|
||||||
|
<p>This document requires no interaction with &IANA;.</p>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
|
||||||
|
<section2 topic='Protocol Namespaces' anchor='ns'>
|
||||||
|
<p>The ®ISTRAR; includes 'urn:xmpp:occupant-id:0' in its registry of protocol namespaces (see &NAMESPACES;).</p>
|
||||||
|
<ul>
|
||||||
|
<li>urn:xmpp:occupant-id:0</li>
|
||||||
|
</ul>
|
||||||
|
</section2>
|
||||||
|
</section1>
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||||||
|
</xep>
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231
inbox/reactions.xml
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231
inbox/reactions.xml
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<?xml version='1.0' encoding='UTF-8'?>
|
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|
<!DOCTYPE xep SYSTEM 'xep.dtd' [
|
||||||
|
<!ENTITY % ents SYSTEM 'xep.ent'>
|
||||||
|
%ents;
|
||||||
|
]>
|
||||||
|
<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
|
||||||
|
<xep>
|
||||||
|
<header>
|
||||||
|
<title>Message Reactions</title>
|
||||||
|
<abstract>This specification defines a way for adding reactions to a message.</abstract>
|
||||||
|
&LEGALNOTICE;
|
||||||
|
<number>xxxx</number>
|
||||||
|
<status>ProtoXEP</status>
|
||||||
|
<type>Standards Track</type>
|
||||||
|
<sig>Standards</sig>
|
||||||
|
<approver>Council</approver>
|
||||||
|
<dependencies>
|
||||||
|
<spec>XMPP Core</spec>
|
||||||
|
<spec>XEP-0001</spec>
|
||||||
|
<spec>XEP-0030</spec>
|
||||||
|
<spec>XEP-0115</spec>
|
||||||
|
<spec>XEP-0203</spec>
|
||||||
|
<spec>XEP-0334</spec>
|
||||||
|
<spec>XEP-0359</spec>
|
||||||
|
</dependencies>
|
||||||
|
<supersedes/>
|
||||||
|
<supersededby/>
|
||||||
|
<shortname>reactions</shortname>
|
||||||
|
<author>
|
||||||
|
<firstname>Natalie</firstname>
|
||||||
|
<surname>Wirth</surname>
|
||||||
|
<email>xsf@larma.de</email>
|
||||||
|
</author>
|
||||||
|
<author>
|
||||||
|
<firstname>Marvin</firstname>
|
||||||
|
<surname>Wissfeld</surname>
|
||||||
|
<email>xsf@larma.de</email>
|
||||||
|
<jid>jabber@larma.de</jid>
|
||||||
|
</author>
|
||||||
|
<revision>
|
||||||
|
<version>0.0.1</version>
|
||||||
|
<date>2019-07-14</date>
|
||||||
|
<initials>nw/mw</initials>
|
||||||
|
<remark><p>First draft.</p></remark>
|
||||||
|
</revision>
|
||||||
|
</header>
|
||||||
|
<section1 topic='Introduction' anchor='intro'>
|
||||||
|
<p>
|
||||||
|
Message reactions allow to express an opinion or feeling towards a message
|
||||||
|
in a quick and light-weight way. Reactions are described in the form of
|
||||||
|
emojis and can enhance communication especially when chatting with multiple
|
||||||
|
parties. Other possible uses include voting and checking to-do list items.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
Reactions are typically displayed in a summarizing fashion visually attached
|
||||||
|
to the message they belong to.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
Related work has been done in &xep0367;. However, it can't be used for
|
||||||
|
reactions, as it would cause difficulties with non-supporting clients, is
|
||||||
|
not tailored to emojis and does not specify removal of reactions. To solve
|
||||||
|
these issues, this XEP introduces a separate XML element for reactions.
|
||||||
|
</p>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='Discovering support' anchor='disco'>
|
||||||
|
<p>
|
||||||
|
If a client implements message reactions, it MUST specify the
|
||||||
|
'urn:xmpp:reactions:0' feature in its service discovery information features
|
||||||
|
as specified in &xep0030; and the Entity Capabilities profile specified in &xep0115;.
|
||||||
|
</p>
|
||||||
|
<example caption='Client requests information about a chat partner's client'><![CDATA[
|
||||||
|
<iq type='get'
|
||||||
|
to='romeo@montague.lit/orchard'
|
||||||
|
from='juliet@capulet.lit/balcony'
|
||||||
|
id='info1'>
|
||||||
|
<query xmlns='http://jabber.org/protocol/disco#info'/>
|
||||||
|
</iq>]]></example>
|
||||||
|
<example caption='Partner's client advertises support for reactions'><![CDATA[
|
||||||
|
<iq type='result'
|
||||||
|
to='juliet@capulet.lit/balcony'
|
||||||
|
from='romeo@montague.lit/orchard'
|
||||||
|
id='info1'>
|
||||||
|
<query xmlns='http://jabber.org/protocol/disco#info'>
|
||||||
|
...
|
||||||
|
<feature var='urn:xmpp:reactions:0'/>
|
||||||
|
...
|
||||||
|
</query>
|
||||||
|
</iq>]]></example>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='Use Cases' anchor='usecases'>
|
||||||
|
<section2 topic="Sending reactions to a message" anchor="sending-reactions">
|
||||||
|
<p>
|
||||||
|
When a user chooses to react to a message with a certain emoji, the
|
||||||
|
client sends a <message> stanza containing a <reactions>
|
||||||
|
element. The chosen emoji is included in a <reaction> element within
|
||||||
|
the <reactions> element. The message is referred to by including its
|
||||||
|
id or in MUCs its stanza-id as defined in &xep0359; in the 'id' attribute
|
||||||
|
of the reactions element.
|
||||||
|
</p>
|
||||||
|
<example caption="Romeo sends a message"><![CDATA[
|
||||||
|
<message to='juliet@capulet.net/balcony' id='744f6e18-a57a-11e9-a656-4889e7820c76' type='chat'>
|
||||||
|
<body>Hello, world!</body>
|
||||||
|
</message>]]></example>
|
||||||
|
<example caption="Juliet sends a 👋 reaction to the message"><![CDATA[
|
||||||
|
<message to='romeo@capulet.net/orchard' id='7fdd29fa-a57a-11e9-b04a-4889e7820c76' type='chat'>
|
||||||
|
<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'>
|
||||||
|
<reaction>👋</reaction>
|
||||||
|
</reactions>
|
||||||
|
<store xmlns="urn:xmpp:hints"/>
|
||||||
|
</message>]]></example>
|
||||||
|
</section2>
|
||||||
|
<section2 topic="Updating reactions to a message" anchor="updating-reactions">
|
||||||
|
<p>
|
||||||
|
If the user chooses to remove reactions from or add reactions to a
|
||||||
|
message they have already reacted to, the client sends a <message>
|
||||||
|
with all <reaction> elements that are (still or newly) applicable
|
||||||
|
to that message.
|
||||||
|
</p>
|
||||||
|
<example caption="Juliet adds a 🐢 reaction to the message"><![CDATA[
|
||||||
|
<message to='romeo@capulet.net/orchard' id='96d73204-a57a-11e9-88b8-4889e7820c76' type='chat'>
|
||||||
|
<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'>
|
||||||
|
<reaction>👋</reaction>
|
||||||
|
<reaction>🐢</reaction>
|
||||||
|
</reactions>
|
||||||
|
<store xmlns="urn:xmpp:hints"/>
|
||||||
|
</message>]]></example>
|
||||||
|
<p>
|
||||||
|
In order to remove all reactions from a message, an empty
|
||||||
|
<reactions> element is sent.
|
||||||
|
</p>
|
||||||
|
<example caption="Juliet removes all reactions from the message"><![CDATA[
|
||||||
|
<message to='romeo@capulet.net/orchard' id='973c9d2e-a57a-11e9-af82-4889e7820c76' type='chat'>
|
||||||
|
<reactions id='744f6e18-a57a-11e9-a656-4889e7820c76' xmlns='urn:xmpp:reactions:0'/>
|
||||||
|
<store xmlns="urn:xmpp:hints"/>
|
||||||
|
</message>]]></example>
|
||||||
|
</section2>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='Business Rules' anchor='rules'>
|
||||||
|
<p>Messages MUST NOT contain more then one <reactions> element</p>
|
||||||
|
<p>
|
||||||
|
A message containing a <reactions> element SHOULD be of type 'chat'
|
||||||
|
or 'groupchat'.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
A <reaction> element SHOULD only contain Unicode codepoints that can
|
||||||
|
be displayed as a single emoji, as specified in the latest revision of the
|
||||||
|
<link url="http://www.unicode.org/reports/tr51/">Unicode® Technical Standard #51</link> <note>Unicode® Technical Standard #51 <<link url="http://www.unicode.org/reports/tr51/">http://www.unicode.org/reports/tr51/</link>>.</note>.
|
||||||
|
Receiving entities MAY ignore <reaction> elements that do not comply
|
||||||
|
with this specification.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
A receiving client SHOULD show reactions attached to the message they where
|
||||||
|
in response to. Reactions MAY be displayed in a summarized fashion.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
A <reactions> element MUST NOT contain the same reaction more than
|
||||||
|
once. A receiving entity SHOULD ignore duplicate reactions inside a
|
||||||
|
<reactions> element.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
The sending entity SHOULD add a <store/> hint, as defined in &xep0334;,
|
||||||
|
if the message being reacted to does not carry a <no-store/> hint.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
If a message is updated using &xep0308;, the 'id' attribute of the
|
||||||
|
<reactions> element SHOULD reference the original message id.
|
||||||
|
A receiving entity SHOULD accept messages with a <reactions> element
|
||||||
|
referencing a message correction and SHOULD handle such element as if
|
||||||
|
it was using the message id of the original message.
|
||||||
|
</p>
|
||||||
|
<section2 topic='Acceptable reactions' anchor='acceptable-reactions'>
|
||||||
|
<p>
|
||||||
|
In direct conversations, a reaction MUST only be accepted if the senders
|
||||||
|
bare JID matches the bare JID of any of the two involved parties.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
In MUCs and MUC PMs, the recipient SHOULD ensure that the real bare JID of
|
||||||
|
the sending occupant did not already send a reaction to that message to
|
||||||
|
accept it as a new reaction, e.g. by keeping track of leave/join
|
||||||
|
presences since the message was send. This implies that in semi-anonymous
|
||||||
|
MUCs it MAY be impossible to attach reactions to a message received from
|
||||||
|
the history. A reaction MAY still be a valid reaction update (as per the
|
||||||
|
next paragraph) if it was not accepted as a new reaction.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
A reaction MUST only be considered an update if it orignates from the same
|
||||||
|
sender as a previous reaction message. In direct conversations, this means
|
||||||
|
the bare JID MUST match the original bare JID. In MUCs and MUC PMs the
|
||||||
|
senders full JID MAY not match the original full JID, but the recipient
|
||||||
|
MUST ensure that the real bare JID of the sending occupant is the same as
|
||||||
|
the real bare JID of the previous reaction message, e.g. by keeping track
|
||||||
|
of leave/join presences.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
If a message containing a <reactions> element arrives delayed, which
|
||||||
|
means it carries a <delay/> element, as defined in &xep0203; it SHOULD
|
||||||
|
only be accepted, if no newer reaction from the same sender was already
|
||||||
|
accepted.
|
||||||
|
</p>
|
||||||
|
</section2>
|
||||||
|
<section2 topic='Using the correct ID' anchor='business-id'>
|
||||||
|
<p>
|
||||||
|
For messages of type 'groupchat', the stanza's 'id' attribute MUST NOT be
|
||||||
|
used for reactions. Instead, in group chat situations, the ID assigned to
|
||||||
|
the stanza by the group chat itself must be used. This is discovered in a
|
||||||
|
<stanza-id> element with a 'by' attribute that matches the bare JID
|
||||||
|
of the group chat, as defined in &xep0359;.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
This implies that group chat messages without a &xep0359; stanza-id cannot
|
||||||
|
be reacted to.
|
||||||
|
</p>
|
||||||
|
<p>
|
||||||
|
For other message types the sender should use the 'id' from a &xep0359;
|
||||||
|
<origin-id> if present, or the value of the 'id' attribute on the
|
||||||
|
<message> otherwise.
|
||||||
|
</p>
|
||||||
|
</section2>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='IANA Considerations' anchor='iana'>
|
||||||
|
<p>This document requires no interaction with &IANA;.</p>
|
||||||
|
</section1>
|
||||||
|
<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
|
||||||
|
<section2 topic='Protocol Namespaces' anchor='ns'>
|
||||||
|
<p>The ®ISTRAR; includes 'urn:xmpp:reactions:0' in its registry of protocol namespaces (see &NAMESPACES;).</p>
|
||||||
|
<ul>
|
||||||
|
<li>urn:xmpp:reactions:0</li>
|
||||||
|
</ul>
|
||||||
|
</section2>
|
||||||
|
</section1>
|
||||||
|
</xep>
|
||||||
Loading…
Reference in New Issue
Block a user