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mod_mamsub/mod_mamsub.lua @ 3656:3e0f4d727825
mod_vcard_muc: Add an alternative method of signaling avatar change
When the avatar has been changed, a signal is sent that the room
configuration has changed. Clients then do a disco#info query to find
the SHA-1 of the new avatar. They can then fetch it as before, or not if
they have it cached already.
This is meant to be less disruptive than signaling via presence, which
caused problems for some clients.
If clients transition to the new method, the old one can eventually be removed.
The namespace is made up while waiting for standardization.
Otherwise it is very close to what's described in
https://xmpp.org/extensions/inbox/muc-avatars.html
author | Kim Alvefur <zash@zash.se> |
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date | Sun, 25 Aug 2019 20:46:43 +0200 |
parent | 1748:0697fbef9134 |
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-- MAM Subscriptions prototype -- Copyright (C) 2015 Kim Alvefur -- -- This file is MIT/X11 licensed. local mt = require"util.multitable"; local st = require"util.stanza"; local xmlns_mamsub = "http://prosody.im/protocol/mamsub"; module:add_feature(xmlns_mamsub); local host_sessions = prosody.hosts[module.host].sessions; local weak = { __mode = "k" }; module:hook("iq-set/self/"..xmlns_mamsub..":subscribe", function (event) local origin, stanza = event.origin, event.stanza; if origin.mamsub ~= nil then origin.send(st.error_reply(stanza, "modify", "conflict")); return true; end origin.mamsub = xmlns_mamsub; local mamsub_sessions = host_sessions[origin.username].mamsub_sessions; if not mamsub_sessions then mamsub_sessions = setmetatable({}, weak); host_sessions[origin.username].mamsub_sessions = mamsub_sessions; end mamsub_sessions[origin] = true; origin.send(st.reply(stanza)); return true; end); module:hook("iq-set/self/"..xmlns_mamsub..":unsubscribe", function (event) local origin, stanza = event.origin, event.stanza; if origin.mamsub ~= xmlns_mamsub then origin.send(st.error_reply(stanza, "modify", "conflict")); return true; end origin.mamsub = nil; local mamsub_sessions = host_sessions[origin.username].mamsub_sessions; if mamsub_sessions then mamsub_sessions[origin] = nil; end origin.send(st.reply(stanza)); return true; end); module:hook("archive-message-added", function (event) local user_session = host_sessions[event.for_user]; local mamsub_sessions = user_session and user_session.mamsub_sessions; if not mamsub_sessions then return end; local for_broadcast = st.message():tag("mamsub", { xmlns = xmlns_mamsub }) :tag("forwarded", { xmlns = "urn:xmpp:forward:0" }) :add_child(event.stanza); for session in pairs(mamsub_sessions) do if session.mamsub == xmlns_mamsub then for_broadcast.attr.to = session.full_jid; session.send(for_broadcast); end end end);