prosody
26a004c96ef8
spec/scansion/presence_preapproval.scs

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spec/scansion/presence_preapproval.scs @ 12694:26a004c96ef8

util.paseto: Implementation of PASETO v4.public tokens PASETO provides an alternative to JWT with the promise of fewer implementation pitfalls. The v4.public algorithm allows asymmetric cryptographically-verified token issuance and validation. In summary, such tokens can be issued by one party and securely verified by any other party independently using the public key of the issuer. This has a number of potential applications in a decentralized network and ecosystem such as XMPP. For example, such tokens could be combined with XEP-0317 to allow hats to be verified even in the context of a third-party MUC service.
author Matthew Wild <mwild1@gmail.com>
date Fri, 24 Jun 2022 17:03:28 +0100
parent 10515:35bf3b80480f
line wrap: on
line source

# server supports contact subscription pre-approval (RFC 6121 3.4)

[Client] Alice
	jid: preappove-a@localhost
	password: password

[Client] Bob
	jid: preapprove-b@localhost
	password: password

---------

Alice connects

Alice sends:
	<presence/>

Alice receives:
	<presence/>

Alice sends:
	<presence to="${Bob's JID}" type="subscribed"/>

Bob connects

Bob sends:
	<iq type="get" id="roster1">
		<query xmlns="jabber:iq:roster"/>
	</iq>

Bob receives:
	<iq type="result" id="roster1">
		<query xmlns="jabber:iq:roster" ver="{scansion:any}">
		</query>
	</iq>

Bob sends:
	<presence/>

Bob receives:
	<presence from="${Bob's full JID}"/>

Bob sends:
	<presence to="${Alice's JID}" type="subscribe" />

Bob receives:
	<iq type='set' id='{scansion:any}'>
		<query ver='1' xmlns='jabber:iq:roster'>
			<item jid="${Alice's JID}" subscription='none' ask='subscribe' />
		</query>
	</iq>



Bob receives:
	<presence from="${Alice's JID}" type="subscribed" />

Bob disconnects

Alice sends:
	<iq type="get" id="roster1">
		<query xmlns="jabber:iq:roster"/>
	</iq>

Alice receives:
	<iq type="result" id="roster1">
		<query xmlns="jabber:iq:roster" ver="{scansion:any}">
			<item jid="${Bob's JID}" subscription="from" />
		</query>
	</iq>

Alice disconnects

Bob disconnects