annotate mod_csi_grace_period/mod_csi_grace_period.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>
date Sun, 25 Aug 2019 20:46:43 +0200
parents 5c37d759b1e2
children 7570976318a9
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1 -- Copyright (c) 2019 Kim Alvefur
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2 --
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3 -- This project is MIT/X11 licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6 -- Yes, this module touches stores data in user sessions
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7 -- luacheck: ignore 122
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8
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9 local grace_period = module:get_option_number("grace_period", 30);
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10
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11 local user_sessions = prosody.hosts[module.host].sessions;
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12
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13 module:hook("csi-is-stanza-important", function (event)
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14 if event.stanza.name ~= "message" then return end
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15 local session = event.session;
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16 if not session then return; end
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17
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18 local user_session = user_sessions[session.username];
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19 if not user_session then return; end
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20
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21 if user_sessions.grace_time_start then
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22 if user_sessions.last_active == session.resource then
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23 return;
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24 end
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25 if (os.time() - user_sessions.grace_time_start) < grace_period then
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26 session.log("debug", "Within grace period, probably seen");
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27 return false;
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28 end
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29 end
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30 end, 1);
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31
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32 local function on_activity(event)
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33 local stanza, origin = event.stanza, event.origin;
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34 local user_session = user_sessions[origin.username];
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35 if not user_session then return; end
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36
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37 if stanza:get_child("body") or stanza:get_child("active", "http://jabber.org/protocol/chatstates") then
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38 user_sessions.last_active = origin.resource;
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39 user_sessions.grace_time_start = os.time();
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40 end
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41 end
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42 module:hook("pre-message/full", on_activity);
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43 module:hook("pre-message/bare", on_activity);
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44 module:hook("pre-message/host", on_activity);