prosody-modules
c8d04ac200fc
mod_vcard_muc/mod_vcard_muc.lua

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mod_vcard_muc/mod_vcard_muc.lua @ 5401:c8d04ac200fc

mod_http_oauth2: Reject loopback URIs as client_uri This really should be a proper website with info, https://localhost is not good enough. Ideally we'd validate that it's got proper DNS and is actually reachable, but triggering HTTP or even DNS lookups seems like it would carry abuse potential that would best to avoid.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:20:55 +0200
parent 5290:dddac5a3f447
child 5927:6fb26b6691c0
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Michel Le Bihan <michel@lebihan.pl>
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1 -- Prosody IM
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Michel Le Bihan <michel@lebihan.pl>
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2018 Michel Le Bihan
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 local st = require "util.stanza"
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11 local jid_split = require "util.jid".split;
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12 local base64 = require"util.encodings".base64;
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13 local sha1 = require"util.hashes".sha1;
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14
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15 local mod_muc = module:depends"muc";
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16
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17 local vcards = module:open_store();
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18
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19 module:add_feature("vcard-temp");
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20
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21 local get_room_from_jid = rawget(mod_muc, "get_room_from_jid") or
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22 function (jid)
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23 local rooms = rawget(mod_muc, "rooms");
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24 return rooms[jid];
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25 end
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26
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27 local function get_photo_hash(room)
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28 local room_node = jid_split(room.jid);
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29 local vcard = st.deserialize(vcards:get(room_node));
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30 if vcard then
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31 local photo = vcard:get_child("PHOTO");
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32
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33 if photo then
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34 local photo_b64 = photo:get_child_text("BINVAL");
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35 local photo_raw = photo_b64 and base64.decode(photo_b64);
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36 return sha1(photo_raw, true);
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37 end
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38 end
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39
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40 end
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41
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42 local function broadcast_presence(room, to)
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43 local photo_hash = get_photo_hash(room);
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44 local presence_vcard = st.presence({to = to, from = room.jid})
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45 :tag("x", { xmlns = "vcard-temp:x:update" })
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46 :tag("photo"):text(photo_hash):up();
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47
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48 if to == nil then
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49 room:broadcast_message(presence_vcard);
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50 else
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51 module:send(presence_vcard);
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52 end
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53 end
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54
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55 local function handle_vcard(event)
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56 local session, stanza = event.origin, event.stanza;
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57
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58 local room_jid = stanza.attr.to;
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59 local room_node = jid_split(room_jid);
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60 local room = get_room_from_jid(room_jid);
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61 if not room then
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62 session.send(st.error_reply(stanza, "cancel", "item-not-found"))
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63 return true;
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64 end
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65
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66 local from = stanza.attr.from;
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67 local from_affiliation = room:get_affiliation(from);
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68
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69 if stanza.attr.type == "get" then
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70 local vCard;
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71 vCard = st.deserialize(vcards:get(room_node));
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72
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73 if vCard then
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74 session.send(st.reply(stanza):add_child(vCard)); -- send vCard!
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75 else
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76 session.send(st.error_reply(stanza, "cancel", "item-not-found"));
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77 end
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78 else
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79 if from_affiliation == "owner" or (module.may and module:may("muc:automatic-ownership", from)) then
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80 if vcards:set(room_node, st.preserialize(stanza.tags[1])) then
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81 session.send(st.reply(stanza):tag("vCard", { xmlns = "vcard-temp" }));
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82 broadcast_presence(room, nil)
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83
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84 room:broadcast_message(st.message({ from = room.jid, type = "groupchat" })
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85 :tag("x", { xmlns = "http://jabber.org/protocol/muc#user" })
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86 :tag("status", { code = "104" }));
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87 else
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88 -- TODO unable to write file, file may be locked, etc, what's the correct error?
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89 session.send(st.error_reply(stanza, "wait", "internal-server-error"));
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90 end
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91 else
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92 session.send(st.error_reply(stanza, "auth", "forbidden"));
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93 end
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94 end
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95 return true;
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96 end
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97
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98
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99 module:hook("iq/bare/vcard-temp:vCard", handle_vcard);
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100 module:hook("iq/host/vcard-temp:vCard", handle_vcard);
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101
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102 module:hook("muc-disco#info", function(event)
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103 event.reply:tag("feature", { var = "vcard-temp" }):up();
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104
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105 table.insert(event.form, {
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106 name = "{http://modules.prosody.im/mod_vcard_muc}avatar#sha1",
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107 type = "text-single",
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108 });
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109 event.formdata["{http://modules.prosody.im/mod_vcard_muc}avatar#sha1"] = get_photo_hash(event.room);
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110 end);
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111
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112 module:hook("muc-occupant-session-new", function(event)
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113 broadcast_presence(event.room, event.jid);
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114 end)