annotate mod_vcard_muc/mod_vcard_muc.lua @ 4043:a533abe6ffd0

mod_vcard_muc: Fix #1414 issue with nil room being queried when a stanza with a nonexisting MUC localpart was sent
author Michel Le Bihan <michel@lebihan.pl>
date Mon, 08 Jun 2020 18:39:16 +0200
parents 3e0f4d727825
children 3f3b672b7616
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1 -- Prosody IM
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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_jid, to)
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43 local room = get_room_from_jid(room_jid);
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44
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45 local photo_hash = get_photo_hash(room);
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46 local presence_vcard = st.presence({to = to, from = room_jid})
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47 :tag("x", { xmlns = "vcard-temp:x:update" })
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48 :tag("photo"):text(photo_hash):up();
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49
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50 if to == nil then
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51 room:broadcast_message(presence_vcard);
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52 else
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53 module:send(presence_vcard);
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54 end
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55 end
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56
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57 local function handle_vcard(event)
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58 local session, stanza = event.origin, event.stanza;
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59
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60 local room_jid = stanza.attr.to;
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61 local room_node = jid_split(room_jid);
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62 local room = get_room_from_jid(room_jid);
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63 if not room then
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64 session.send(st.error_reply(stanza, "cancel", "item-not-found"))
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65 return true;
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66 end
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67
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68 local from = stanza.attr.from;
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69 local from_affiliation = room:get_affiliation(from);
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70
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71 if stanza.attr.type == "get" then
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72 local vCard;
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73 vCard = st.deserialize(vcards:get(room_node));
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74
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75 if vCard then
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76 session.send(st.reply(stanza):add_child(vCard)); -- send vCard!
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77 else
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78 session.send(st.error_reply(stanza, "cancel", "item-not-found"));
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79 end
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80 else
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81 if from_affiliation == "owner" then
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82 if vcards:set(room_node, st.preserialize(stanza.tags[1])) then
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83 session.send(st.reply(stanza):tag("vCard", { xmlns = "vcard-temp" }));
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84 broadcast_presence(room_jid, nil)
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85
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86 room:broadcast_message(st.message({ from = room.jid, type = "groupchat" })
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87 :tag("x", { xmlns = "http://jabber.org/protocol/muc#user" })
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88 :tag("status", { code = "104" }));
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89 else
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90 -- TODO unable to write file, file may be locked, etc, what's the correct error?
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91 session.send(st.error_reply(stanza, "wait", "internal-server-error"));
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92 end
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93 else
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94 session.send(st.error_reply(stanza, "auth", "forbidden"));
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95 end
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96 end
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97 return true;
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98 end
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99
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100
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101 module:hook("iq/bare/vcard-temp:vCard", handle_vcard);
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102 module:hook("iq/host/vcard-temp:vCard", handle_vcard);
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103
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104 module:hook("muc-disco#info", function(event)
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105 event.reply:tag("feature", { var = "vcard-temp" }):up();
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106
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107 table.insert(event.form, {
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108 name = "{http://modules.prosody.im/mod_vcard_muc}avatar#sha1",
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109 type = "text-single",
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110 });
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111 event.formdata["{http://modules.prosody.im/mod_vcard_muc}avatar#sha1"] = get_photo_hash(event.room);
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112 end);
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113
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114 module:hook("muc-occupant-session-new", function(event)
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115 broadcast_presence(event.room.jid, event.jid);
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116 end)