prosody-modules
06640647d193
mod_muc_bot/mod_muc_bot.lua

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mod_muc_bot/mod_muc_bot.lua @ 5461:06640647d193

mod_http_oauth2: Fix use of arbitrary ports in loopback redirect URIs Per draft-ietf-oauth-v2-1-08#section-8.4.2 > The authorization server MUST allow any port to be specified at the > time of the request for loopback IP redirect URIs, to accommodate > clients that obtain an available ephemeral port from the operating > system at the time of the request. Uncertain if it should normalize the host part, but it also seems harmless to treat IPv6 and IPv4 the same here. One thing is that "localhost" is NOT RECOMMENDED because it can sometimes be pointed to non-loopback interfaces via DNS or hosts file.
author Kim Alvefur <zash@zash.se>
date Wed, 17 May 2023 13:51:30 +0200
parent 4824:205b9d06fe6b
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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30f2d7c3f946 mod_muc_bot: Attempt at module easing creation of stateless bots
Kim Alvefur <zash@zash.se>
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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(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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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?");