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plugins/muc/mod_muc.lua

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plugins/muc/mod_muc.lua @ 3330:bdc325ce9fbc

MUC: Make number of stored history messages configurable with option max_history_messages (thanks michal and others who requested)
author Matthew Wild <mwild1@gmail.com>
date Tue, 06 Jul 2010 17:09:23 +0100
parent 3262:330010ef078f
child 3388:02e668d64e05
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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 --
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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 and restrict_room_creation ~= true then restrict_room_creation = nil; end
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20 local muc_new_room = module:require "muc".new_room;
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21 local register_component = require "core.componentmanager".register_component;
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22 local deregister_component = require "core.componentmanager".deregister_component;
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23 local jid_split = require "util.jid".split;
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24 local jid_bare = require "util.jid".bare;
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25 local st = require "util.stanza";
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26 local uuid_gen = require "util.uuid".generate;
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27 local datamanager = require "util.datamanager";
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28 local um_is_admin = require "core.usermanager".is_admin;
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30 local rooms = {};
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31 local persistent_rooms = datamanager.load(nil, muc_host, "persistent") or {};
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32 local component;
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33
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34 -- Configurable options
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35 local max_history_messages = module:get_option_number("max_history_messages");
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36
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37 local function is_admin(jid)
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38 return um_is_admin(jid) or um_is_admin(jid, module.host);
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39 end
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40
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41 local function room_route_stanza(room, stanza) core_post_stanza(component, stanza); end
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42 local function room_save(room, forced)
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43 local node = jid_split(room.jid);
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44 persistent_rooms[room.jid] = room._data.persistent;
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45 if room._data.persistent then
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46 local history = room._data.history;
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47 room._data.history = nil;
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48 local data = {
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49 jid = room.jid;
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50 _data = room._data;
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51 _affiliations = room._affiliations;
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52 };
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53 datamanager.store(node, muc_host, "config", data);
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54 room._data.history = history;
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55 elseif forced then
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56 datamanager.store(node, muc_host, "config", nil);
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57 end
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58 if forced then datamanager.store(nil, muc_host, "persistent", persistent_rooms); end
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59 end
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60
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61 for jid in pairs(persistent_rooms) do
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62 local node = jid_split(jid);
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63 local data = datamanager.load(node, muc_host, "config") or {};
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64 local room = muc_new_room(jid, {
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65 history_length = max_history_messages;
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66 });
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67 room._data = data._data;
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68 room._data.history_length = max_history_messages; --TODO: Need to allow per-room with a global limit
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69 room._affiliations = data._affiliations;
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70 room.route_stanza = room_route_stanza;
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71 room.save = room_save;
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72 rooms[jid] = room;
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73 end
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74
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75 local host_room = muc_new_room(muc_host, {
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76 history_length = max_history_messages;
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77 });
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78 host_room.route_stanza = room_route_stanza;
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79 host_room.save = room_save;
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80
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81 local function get_disco_info(stanza)
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82 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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83 :tag("identity", {category='conference', type='text', name=muc_name}):up()
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84 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply
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85 end
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86 local function get_disco_items(stanza)
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87 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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88 for jid, room in pairs(rooms) do
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89 if not room:is_hidden() then
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90 reply:tag("item", {jid=jid, name=jid}):up();
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91 end
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92 end
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93 return reply; -- TODO cache disco reply
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94 end
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95
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96 local function handle_to_domain(origin, stanza)
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97 local type = stanza.attr.type;
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98 if type == "error" or type == "result" then return; end
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99 if stanza.name == "iq" and type == "get" then
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100 local xmlns = stanza.tags[1].attr.xmlns;
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101 if xmlns == "http://jabber.org/protocol/disco#info" then
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102 origin.send(get_disco_info(stanza));
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103 elseif xmlns == "http://jabber.org/protocol/disco#items" then
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104 origin.send(get_disco_items(stanza));
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105 elseif xmlns == "http://jabber.org/protocol/muc#unique" then
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106 origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions
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107 else
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108 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc
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109 end
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110 else
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111 host_room:handle_stanza(origin, stanza);
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112 --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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113 end
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114 end
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115
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116 component = register_component(muc_host, function(origin, stanza)
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117 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
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118 if to_node then
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119 local bare = to_node.."@"..to_host;
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120 if to_host == muc_host or bare == muc_host then
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121 local room = rooms[bare];
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122 if not room then
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123 if not(restrict_room_creation) or is_admin(stanza.attr.from) then
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124 room = muc_new_room(bare, {
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125 history_length = max_history_messages;
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126 });
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127 room.route_stanza = room_route_stanza;
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128 room.save = room_save;
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129 rooms[bare] = room;
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130 end
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131 end
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132 if room then
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133 room:handle_stanza(origin, stanza);
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134 if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room
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135 rooms[bare] = nil; -- discard room
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136 end
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137 else
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138 origin.send(st.error_reply(stanza, "cancel", "not-allowed"));
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139 end
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140 else --[[not for us?]] end
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141 return;
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142 end
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143 -- to the main muc domain
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144 handle_to_domain(origin, stanza);
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145 end);
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146 function component.send(stanza) -- FIXME do a generic fix
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147 if stanza.attr.type == "result" or stanza.attr.type == "error" then
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148 core_post_stanza(component, stanza);
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149 else error("component.send only supports result and error stanzas at the moment"); end
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150 end
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151
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152 prosody.hosts[module:get_host()].muc = { rooms = rooms };
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153
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154 module.unload = function()
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155 deregister_component(muc_host);
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156 end
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157 module.save = function()
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158 return {rooms = rooms};
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159 end
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160 module.restore = function(data)
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161 rooms = {};
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162 for jid, oldroom in pairs(data.rooms or {}) do
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163 local room = muc_new_room(jid);
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164 room._jid_nick = oldroom._jid_nick;
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165 room._occupants = oldroom._occupants;
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166 room._data = oldroom._data;
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167 room._affiliations = oldroom._affiliations;
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168 room.route_stanza = room_route_stanza;
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169 room.save = room_save;
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170 rooms[jid] = room;
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171 end
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172 prosody.hosts[module:get_host()].muc = { rooms = rooms };
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173 end