prosody-modules
3b2ae854842c
mod_muc_bot/mod_muc_bot.lua

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mod_muc_bot/mod_muc_bot.lua @ 4565:3b2ae854842c

mod_muc_bot: Save occupant to room This has some side-effects: Firstly, the bot shows up in occupant list, which is nice. Secondly, the bot starts receiving messages from the room which might be wanted, but it would be better to join the room for real in this case.
author Kim Alvefur <zash@zash.se>
date Sat, 10 Apr 2021 19:23:25 +0200
parent 4564:d25f0fea270f
child 4566:174c7a3c819b
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1 local st = require "util.stanza";
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2 local jid = require "util.jid";
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3
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4 local bots = module:get_option_set("known_bots", {});
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5
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6 module:hook("muc-occupant-groupchat", function(event)
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7 if event.occupant then return end -- skip messages from actual occupants
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8 local room = event.room;
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9
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10 if bots:contains(jid.bare(event.from)) or bots:contains(jid.host(event.from)) then
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11
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12 local nick = room:get_registered_nick(jid);
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13
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14 if not nick then
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15 -- Allow bot to specify its own nick, but we're appending '[bot]' to it.
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16 -- FIXME HATS!!!
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17 nick = event.stanza:get_child_text("nick", "http://jabber.org/protocol/nick");
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18 nick = (nick or jid.bare(event.from)) .. "[bot]";
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19 end
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20
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21 local virtual_occupant_jid = jid.prep(room.jid .. "/" .. nick, true);
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22 if not virtual_occupant_jid then
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23 module:send(st.error_reply(event.stanza, "modify", "jid-malformed", "Nickname must pass strict validation", room.jid));
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24 return true;
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25 end
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26
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27 local occupant = room:new_occupant(module.host, virtual_occupant_jid);
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28 local join = st.presence({from = event.from; to = virtual_occupant_jid});
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29 local dest_x = st.stanza("x", {xmlns = "http://jabber.org/protocol/muc#user"});
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30 occupant:set_session(event.from, join, true);
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31 room:save_occupant(occupant);
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32 room:publicise_occupant_status(occupant, dest_x);
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33 -- Inject virtual occupant to trick all the other hooks on this event that
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34 -- this is an actual legitimate participant.
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35 event.occupant = occupant;
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36
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37 end
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38 end, 66);
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39
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40 module:hook("muc-occupant-pre-join", function(event)
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41 local room = event.room;
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42 local nick = jid.resource(event.occupant.nick);
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43 if nick:sub(-5, -1) == "[bot]" then
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44 event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", "Only known bots may use the [bot] suffix", room.jid));
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45 return true;
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46 end
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47 end, 3);
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48
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49 module:hook("muc-occupant-pre-change", function(event)
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50 local room = event.room;
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51 local nick = jid.resource(event.dest_occupant.nick);
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52 if nick:sub(-5, -1) == "[bot]" then
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53 event.origin.send(st.error_reply(event.stanza, "modify", "policy-violation", "Only known bots may use the [bot] suffix", room.jid));
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54 return true;
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55 end
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56 end, 3);
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57
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58 assert(string.sub("foo[bot]", -5, -1) == "[bot]", "substring indicies, how do they work?");