prosody
88e198d65905
plugins/muc/mod_muc.lua

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plugins/muc/mod_muc.lua @ 5062:88e198d65905

MUC: Send unavailable presence when the component or server is shutting down.
author Waqas Hussain <waqas20@gmail.com>
date Wed, 01 Aug 2012 01:36:22 +0500
parent 5058:433cc9a4c7e9
child 5064:7a1eb302c562
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 -- Prosody IM
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b7049746bd29 Update copyright headers for 2010
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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 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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9
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10 if module:get_host_type() ~= "component" then
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11 error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0);
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12 end
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13
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14 local muc_host = module:get_host();
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15 local muc_name = module:get_option("name");
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16 if type(muc_name) ~= "string" then muc_name = "Prosody Chatrooms"; end
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17 local restrict_room_creation = module:get_option("restrict_room_creation");
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18 if restrict_room_creation then
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19 if restrict_room_creation == true then
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20 restrict_room_creation = "admin";
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21 elseif restrict_room_creation ~= "admin" and restrict_room_creation ~= "local" then
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22 restrict_room_creation = nil;
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23 end
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24 end
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25 local muc_new_room = module:require "muc".new_room;
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26 local jid_split = require "util.jid".split;
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27 local jid_bare = require "util.jid".bare;
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28 local st = require "util.stanza";
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29 local uuid_gen = require "util.uuid".generate;
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30 local datamanager = require "util.datamanager";
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31 local um_is_admin = require "core.usermanager".is_admin;
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32 local hosts = hosts;
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33
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34 rooms = {};
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35 local rooms = rooms;
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36 local persistent_rooms = datamanager.load(nil, muc_host, "persistent") or {};
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37
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38 -- Configurable options
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39 local max_history_messages = module:get_option_number("max_history_messages");
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40
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41 local function is_admin(jid)
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42 return um_is_admin(jid, module.host);
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43 end
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44
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45 local function room_route_stanza(room, stanza) module:send(stanza); end
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46 local function room_save(room, forced)
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47 local node = jid_split(room.jid);
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48 persistent_rooms[room.jid] = room._data.persistent;
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49 if room._data.persistent then
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50 local history = room._data.history;
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51 room._data.history = nil;
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52 local data = {
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53 jid = room.jid;
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54 _data = room._data;
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55 _affiliations = room._affiliations;
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56 };
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57 datamanager.store(node, muc_host, "config", data);
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58 room._data.history = history;
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59 elseif forced then
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60 datamanager.store(node, muc_host, "config", nil);
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61 if not next(room._occupants) then -- Room empty
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62 rooms[room.jid] = nil;
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63 end
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64 end
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65 if forced then datamanager.store(nil, muc_host, "persistent", persistent_rooms); end
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66 end
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67
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68 local persistent_errors = false;
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69 for jid in pairs(persistent_rooms) do
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70 local node = jid_split(jid);
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71 local data = datamanager.load(node, muc_host, "config");
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72 if data then
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73 local room = muc_new_room(jid, {
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74 max_history_length = max_history_messages;
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75 });
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76 room._data = data._data;
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77 room._data.max_history_length = max_history_messages; -- Overwrite old max_history_length in data with current settings
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78 room._affiliations = data._affiliations;
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79 room.route_stanza = room_route_stanza;
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80 room.save = room_save;
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81 rooms[jid] = room;
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82 else -- missing room data
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83 persistent_rooms[jid] = nil;
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84 module:log("error", "Missing data for room '%s', removing from persistent room list", jid);
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85 persistent_errors = true;
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86 end
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87 end
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88 if persistent_errors then datamanager.store(nil, muc_host, "persistent", persistent_rooms); end
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89
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90 local host_room = muc_new_room(muc_host, {
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91 max_history_length = max_history_messages;
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92 });
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93 host_room.route_stanza = room_route_stanza;
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94 host_room.save = room_save;
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95
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96 local function get_disco_info(stanza)
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97 return st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info")
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98 :tag("identity", {category='conference', type='text', name=muc_name}):up()
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99 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
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100 end
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101 local function get_disco_items(stanza)
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102 local reply = st.iq({type='result', id=stanza.attr.id, from=muc_host, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items");
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103 for jid, room in pairs(rooms) do
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104 if not room:is_hidden() then
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105 reply:tag("item", {jid=jid, name=room:get_name()}):up();
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106 end
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107 end
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108 return reply; -- TODO cache disco reply
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109 end
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110
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111 local function handle_to_domain(event)
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112 local origin, stanza = event.origin, event.stanza;
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113 local type = stanza.attr.type;
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114 if type == "error" or type == "result" then return; end
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115 if stanza.name == "iq" and type == "get" then
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116 local xmlns = stanza.tags[1].attr.xmlns;
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117 if xmlns == "http://jabber.org/protocol/disco#info" then
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118 origin.send(get_disco_info(stanza));
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119 elseif xmlns == "http://jabber.org/protocol/disco#items" then
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120 origin.send(get_disco_items(stanza));
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121 elseif xmlns == "http://jabber.org/protocol/muc#unique" then
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122 origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions
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123 else
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124 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
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125 end
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126 else
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127 host_room:handle_stanza(origin, stanza);
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128 --origin.send(st.error_reply(stanza, "cancel", "service-unavailable", "The muc server doesn't deal with messages and presence directed at it"));
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129 end
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130 return true;
1738
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131 end
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132
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133 function stanza_handler(event)
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134 local origin, stanza = event.origin, event.stanza;
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135 local bare = jid_bare(stanza.attr.to);
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136 local room = rooms[bare];
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137 if not room then
5058
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diff changeset
138 if stanza.name ~= "presence" then
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139 origin.send(st.error_reply(stanza, "cancel", "item-not-found"));
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140 return true;
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141 end
4370
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diff changeset
142 if not(restrict_room_creation) or
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diff changeset
143 (restrict_room_creation == "admin" and is_admin(stanza.attr.from)) or
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diff changeset
144 (restrict_room_creation == "local" and select(2, jid_split(stanza.attr.from)) == module.host:gsub("^[^%.]+%.", "")) then
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diff changeset
145 room = muc_new_room(bare, {
4528
875b90d5ce0f muc - implement per channel history limits
Markus Kötter <koetter@rrzn-hiwi.uni-hannover.de>
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diff changeset
146 max_history_length = max_history_messages;
4370
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diff changeset
147 });
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148 room.route_stanza = room_route_stanza;
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149 room.save = room_save;
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150 rooms[bare] = room;
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151 end
1738
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152 end
4370
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diff changeset
153 if room then
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154 room:handle_stanza(origin, stanza);
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diff changeset
155 if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room
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156 rooms[bare] = nil; -- discard room
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157 end
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diff changeset
158 else
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diff changeset
159 origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
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diff changeset
160 end
3589
1792610e169e MUC: Return true from the stanza handler to suppress error responses.
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diff changeset
161 return true;
3560
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162 end
3675
cd3a1ae596b4 MUC: Give stanza handlers a negative priority, to allow mod_iq to process them first.
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diff changeset
163 module:hook("iq/bare", stanza_handler, -1);
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diff changeset
164 module:hook("message/bare", stanza_handler, -1);
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diff changeset
165 module:hook("presence/bare", stanza_handler, -1);
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diff changeset
166 module:hook("iq/full", stanza_handler, -1);
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diff changeset
167 module:hook("message/full", stanza_handler, -1);
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diff changeset
168 module:hook("presence/full", stanza_handler, -1);
4370
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diff changeset
169 module:hook("iq/host", handle_to_domain, -1);
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diff changeset
170 module:hook("message/host", handle_to_domain, -1);
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diff changeset
171 module:hook("presence/host", handle_to_domain, -1);
3560
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172
3604
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parents: 3589
diff changeset
173 hosts[module.host].send = function(stanza) -- FIXME do a generic fix
1780
668ce0a2050d MUC: Added a send() method to the component. Fixes issues with local mod_vcard.
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diff changeset
174 if stanza.attr.type == "result" or stanza.attr.type == "error" then
5015
f19b38bfa015 mod_muc: Use module:send() instead of core_*_stanza()
Kim Alvefur <zash@zash.se>
parents: 4924
diff changeset
175 module:send(stanza);
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diff changeset
176 else error("component.send only supports result and error stanzas at the moment"); end
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parents: 1767
diff changeset
177 end
1738
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178
5016
56a0b13a3d42 mod_muc: Remove unused variable and pull hosts into a local
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diff changeset
179 hosts[module:get_host()].muc = { rooms = rooms };
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180
5062
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diff changeset
181 local saved = false;
1738
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182 module.save = function()
5062
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diff changeset
183 saved = true;
1738
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184 return {rooms = rooms};
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185 end
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186 module.restore = function(data)
1748
f4c50c75af6f MUC: Fixed stanza routing for reloaded rooms.
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diff changeset
187 for jid, oldroom in pairs(data.rooms or {}) do
1747
28e5f6b535a8 MUC: Added support for reloading MUC library code.
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diff changeset
188 local room = muc_new_room(jid);
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diff changeset
189 room._jid_nick = oldroom._jid_nick;
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diff changeset
190 room._occupants = oldroom._occupants;
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diff changeset
191 room._data = oldroom._data;
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diff changeset
192 room._affiliations = oldroom._affiliations;
1754
67b66eec9777 MUC: Added support for room configuration forms, persistence and hidden rooms.
Waqas Hussain <waqas20@gmail.com>
parents: 1748
diff changeset
193 room.route_stanza = room_route_stanza;
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diff changeset
194 room.save = room_save;
1747
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diff changeset
195 rooms[jid] = room;
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diff changeset
196 end
5016
56a0b13a3d42 mod_muc: Remove unused variable and pull hosts into a local
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diff changeset
197 hosts[module:get_host()].muc = { rooms = rooms };
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198 end
5062
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diff changeset
199
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diff changeset
200 function shutdown_room(room, stanza)
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diff changeset
201 for nick, occupant in pairs(room._occupants) do
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diff changeset
202 stanza.attr.from = nick;
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diff changeset
203 for jid in pairs(occupant.sessions) do
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diff changeset
204 stanza.attr.to = jid;
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diff changeset
205 room:_route_stanza(stanza);
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diff changeset
206 room._jid_nick[jid] = nil;
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diff changeset
207 end
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diff changeset
208 room._occupants[nick] = nil;
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diff changeset
209 end
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diff changeset
210 end
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diff changeset
211 function shutdown_component()
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diff changeset
212 if not saved then
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diff changeset
213 local stanza = st.presence({type = "unavailable"})
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diff changeset
214 :tag("x", {xmlns = "http://jabber.org/protocol/muc#user"})
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diff changeset
215 :tag("item", { affiliation='none', role='none' }):up();
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diff changeset
216 for roomjid, room in pairs(rooms) do
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diff changeset
217 shutdown_room(room, stanza);
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diff changeset
218 end
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diff changeset
219 shutdown_room(host_room, stanza);
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diff changeset
220 end
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diff changeset
221 end
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diff changeset
222 module.unload = shutdown_component;
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diff changeset
223 module:hook_global("server-stopping", shutdown_component);