prosody-modules
eade7ff9f52c
mod_muc_adhoc_bots/mod_muc_adhoc_bots.lua

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mod_muc_adhoc_bots/mod_muc_adhoc_bots.lua @ 5675:eade7ff9f52c

mod_muc_adhoc_bots: add module
author Stephen Paul Weber <singpolyma@singpolyma.net>
date Mon, 18 Sep 2023 08:22:07 -0500
child 5870:8b868c00e38e
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5675
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1 local jid = require "util.jid";
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2 local json = require "util.json";
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3 local promise = require "util.promise";
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4 local st = require "util.stanza";
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5 local uuid = require "util.uuid";
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6
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7 local xmlns_cmd = "http://jabber.org/protocol/commands";
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8
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9 module:hook("muc-disco#info", function(event)
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10 event.reply:tag("feature", {var = xmlns_cmd}):up();
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11 end);
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12
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13 module:hook("iq-get/bare/http://jabber.org/protocol/disco#items:query", function (event)
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14 local room = prosody.hosts[module:get_host()].modules.muc.get_room_from_jid(event.stanza.attr.to);
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15 local occupant = room:get_occupant_by_real_jid(event.stanza.attr.from)
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16 if event.stanza.tags[1].attr.node ~= xmlns_cmd or not occupant then
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17 return
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18 end
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19
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20 local bots = module:get_option_array("adhoc_bots", {})
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21 bots:map(function(bot)
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22 return module:send_iq(
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23 st.iq({ type = "get", id = uuid.generate(), to = bot, from = room:get_occupant_jid(event.stanza.attr.from) })
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24 :tag("query", { xmlns = "http://jabber.org/protocol/disco#items", node = xmlns_cmd }):up(),
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25 nil,
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26 5
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27 )
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28 end)
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29
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30 promise.all_settled(bots):next(function (bot_commands)
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31 local reply = st.reply(event.stanza):query("http://jabber.org/protocol/disco#items")
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32 for i, one_bot_reply in ipairs(bot_commands) do
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33 if one_bot_reply.status == "fulfilled" then
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34 local query = one_bot_reply.value.stanza:get_child("query", "http://jabber.org/protocol/disco#items")
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35 if query then
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36 -- Should use query:childtags("item") but it doesn't work
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37 for j,item in ipairs(query.tags) do
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38 item.attr.node = json.encode({ jid = item.attr.jid, node = item.attr.node })
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39 item.attr.jid = event.stanza.attr.to
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40 reply:add_child(item):up()
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41 end
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42 end
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43 end
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44 end
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45 event.origin.send(reply:up())
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46 end):catch(function (e)
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47 module:log("error", e)
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48 end)
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49
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50 return true;
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51 end, 500);
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52
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53 local function is_adhoc_bot(jid)
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54 for i, bot_jid in ipairs(module:get_option_array("adhoc_bots", {})) do
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55 if jid == bot_jid then
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56 return true
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57 end
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58 end
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59
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60 return false
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61 end
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62
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63 module:hook("iq-set/bare/"..xmlns_cmd..":command", function (event)
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64 local origin, stanza = event.origin, event.stanza;
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65 local node = stanza.tags[1].attr.node
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66 local meta = json.decode(node)
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67 local room = prosody.hosts[module:get_host()].modules.muc.get_room_from_jid(stanza.attr.to);
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68 local occupant = room:get_occupant_by_real_jid(event.stanza.attr.from)
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69 if meta and occupant and is_adhoc_bot(meta.jid) then
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70 local fwd = st.clone(stanza)
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71 fwd.attr.to = meta.jid
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72 fwd.attr.from = room:get_occupant_jid(event.stanza.attr.from)
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73 local command = fwd:get_child("command", "http://jabber.org/protocol/commands")
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74 command.attr.node = meta.node
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75 module:send_iq(fwd):next(function(response)
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76 local response_command = response.stanza:get_child("command", "http://jabber.org/protocol/commands")
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77 response.stanza.attr.from = stanza.attr.to
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78 response.stanza.attr.to = stanza.attr.from
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79 response_command.attr.node = node
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80 origin.send(response.stanza)
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81 end):catch(function (e)
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82 module:log("error", e)
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83 end)
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84
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85 return true
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86 end
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87
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88 return
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89 end, 500);
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90
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91 local function clean_xmlns(node)
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92 -- Recursively remove "jabber:client" attribute from node.
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93 -- In Prosody internal routing, xmlns should not be set.
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94 -- Keeping xmlns would lead to issues like mod_smacks ignoring the outgoing stanza,
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95 -- so we remove all xmlns attributes with a value of "jabber:client"
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96 if node.attr.xmlns == 'jabber:client' then
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97 for childnode in node:childtags() do
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98 clean_xmlns(childnode)
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99 end
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100 node.attr.xmlns = nil
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101 end
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102 end
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103
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104 module:hook("message/bare", function (event)
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105 local origin, stanza = event.origin, event.stanza;
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106 if not is_adhoc_bot(stanza.attr.from) then return; end
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107 local room = prosody.hosts[module:get_host()].modules.muc.get_room_from_jid(stanza.attr.to);
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108 if room == nil then return; end
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109 local privilege = stanza:get_child("privilege", "urn:xmpp:privilege:2")
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110 if privilege == nil then return; end
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111 local fwd = privilege:get_child("forwarded", "urn:xmpp:forward:0")
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112 if fwd == nil then return; end
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113 local message = fwd:get_child("message", "jabber:client")
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114 if message == nil then return; end
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115 if message.attr.to ~= stanza.attr.to or jid.bare(message.attr.from) ~= stanza.attr.to then
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116 return
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117 end
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118
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119 clean_xmlns(message)
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120 room:broadcast_message(message)
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121 return true
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122 end)