Mercurial > prosody-modules
view mod_muc_occupant_id/mod_muc_occupant_id.lua @ 4260:c539334dd01a
mod_http_oauth2: Rescope oauth client config into users' storage
This produces client_id of the form owner@host/random and prevents
clients from being deleted by registering an account with the same name
and then deleting the account, as well as having the client
automatically be deleted when the owner account is removed.
On one hand, this leaks the bare JID of the creator to users. On the
other hand, it makes it obvious who made the oauth application.
This module is experimental and only for developers, so this can be
changed if a better method comes up.
author | Kim Alvefur <zash@zash.se> |
---|---|
date | Sat, 21 Nov 2020 23:55:10 +0100 |
parents | ae27f3359df8 |
children |
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-- Implementation of https://xmpp.org/extensions/inbox/occupant-id.html -- XEP-0421: Anonymous unique occupant identifiers for MUCs module:depends("muc"); local uuid = require "util.uuid"; local hmac_sha256 = require "util.hashes".hmac_sha256; local b64encode = require "util.encodings".base64.encode; local xmlns_occupant_id = "urn:xmpp:occupant-id:0"; local function generate_id(occupant, room) local bare = occupant.bare_jid; if room._data.occupant_id_salt == nil then room._data.occupant_id_salt = uuid.generate(); end -- XXX: Temporary not-so-important migration measure. Remove this next time -- somebody looks at it. This module used to store every participant's -- occupant-id all the time forever. room._data.occupant_ids = nil; return b64encode(hmac_sha256(bare, room._data.occupant_id_salt)); end local function update_occupant(event) local stanza, room, occupant, dest_occupant = event.stanza, event.room, event.occupant, event.dest_occupant; -- "muc-occupant-pre-change" provides "dest_occupant" but not "occupant". if dest_occupant ~= nil then occupant = dest_occupant; end -- strip any existing <occupant-id/> tags to avoid forgery stanza:remove_children("occupant-id", xmlns_occupant_id); local unique_id = generate_id(occupant, room); stanza:tag("occupant-id", { xmlns = xmlns_occupant_id, id = unique_id }):up(); end local function muc_private(event) local stanza, room = event.stanza, event.room; local occupant = room._occupants[stanza.attr.from]; update_occupant({ stanza = stanza, room = room, occupant = occupant, }); end module:add_feature(xmlns_occupant_id); module:hook("muc-disco#info", function (event) event.reply:tag("feature", { var = xmlns_occupant_id }):up(); end); module:hook("muc-broadcast-presence", update_occupant); module:hook("muc-occupant-pre-join", update_occupant); module:hook("muc-occupant-pre-change", update_occupant); module:hook("muc-occupant-groupchat", update_occupant); module:hook("muc-private-message", muc_private);