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annotate mod_muc_bot/mod_muc_bot.lua @ 5366:db4c66a1d24b

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mod_http_oauth2: Fill in some client metadata defaults Explicit > Implicit Maybe we should actually use these for something as well? :) It's is somewhat an open question of how strictly we should enforce things in the client metadata given that it is somewhat extensible. Especially some of these enum fields which have corresponding IANA registries.
author Kim Alvefur <zash@zash.se>
date Tue, 25 Apr 2023 18:09:08 +0200
parents 205b9d06fe6b
children
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30f2d7c3f946 mod_muc_bot: Attempt at module easing creation of stateless bots
Kim Alvefur <zash@zash.se>
parents:
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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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205b9d06fe6b mod_muc_bot: Use correct JID for virtual occupant
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27 local occupant = room:new_occupant(jid.bare(event.from), 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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3b2ae854842c mod_muc_bot: Save occupant to room
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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 if not module:get_option_boolean("bots_get_messages", true) then
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59 module:hook("muc-broadcast-message", function (event)
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60 event.room:broadcast(event.stanza, function (nick, occupant)
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61 if nick:sub(-5, -1) == "[bot]" or bots:contains(occupant.bare_jid) or bots:contains(jid.host(occupant.bare_jid)) then
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62 return false;
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63 else
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64 return true;
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65 end
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66 end);
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67 return true;
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68 end, -100);
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69 end
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70
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71 if module:get_option_boolean("ignore_bot_errors", true) then
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72 module:hook("message/full", function (event)
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73 local stanza = event.stanza;
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74 if stanza.attr.type == "error" then
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75 if bots:contains(jid.bare(stanza.attr.from)) or bots:contains(jid.host(stanza.attr.from)) then
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76 module:log("debug", "Ignoring error from known bot");
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77 return true;
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78 end
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79 end
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80 end, 1);
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81 end
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82
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83 assert(string.sub("foo[bot]", -5, -1) == "[bot]", "substring indicies, how do they work?");