prosody
94de6b7596cc
util/presence.lua

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util/presence.lua @ 12115:94de6b7596cc

mod_tombstones: Remember deleted accounts #1307 Presence subscriptions are normally revoked on account deletion, which informs the contact. Sometimes this notification gets lost e.g. due to s2s problems. The accounts JID may also be present e.g. in MUC affiliations, chat group member lists, pubsub subscriptions or other systems. These may grant privileges which would fall to someone who creates the same account again, which this module is meant to prevent.
author Kim Alvefur <zash@zash.se>
date Thu, 23 Dec 2021 14:08:20 +0100
parent 8885:d4f5d47f874d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
7279
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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1 -- Prosody IM
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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2 -- Copyright (C) 2008-2010 Matthew Wild
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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3 -- Copyright (C) 2008-2010 Waqas Hussain
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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4 --
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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5 -- This project is MIT/X11 licensed. Please see the
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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6 -- COPYING file in the source package for more information.
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
Kim Alvefur <zash@zash.se>
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7 --
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
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8
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
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9 local t_insert = table.insert;
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10
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11 local function select_top_resources(user)
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12 local priority = 0;
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13 local recipients = {};
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14 for _, session in pairs(user.sessions) do -- find resource with greatest priority
051279755cad mod_presence: Move function for selecting "top resources" into a new util.presence
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15 if session.presence then
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16 local p = session.priority;
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17 if p > priority then
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18 priority = p;
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19 recipients = {session};
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20 elseif p == priority then
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21 t_insert(recipients, session);
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22 end
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23 end
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24 end
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Kim Alvefur <zash@zash.se>
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25 return recipients;
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26 end
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27 local function recalc_resource_map(user)
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28 if user then
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29 user.top_resources = select_top_resources(user);
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30 if #user.top_resources == 0 then user.top_resources = nil; end
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31 end
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32 end
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33
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34 return {
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35 select_top_resources = select_top_resources;
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36 recalc_resource_map = recalc_resource_map;
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37 }