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plugins/muc/mod_muc.lua @ 4528:875b90d5ce0f
muc - implement per channel history limits
- allow configuration via channel settings
- store the settings for permanent channels
- honor muc max_history_messages from the config as upper limit
- only broadcast_message with historic = true if history_length is > 0
author | Markus Kötter <koetter@rrzn-hiwi.uni-hannover.de> |
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date | Fri, 13 Apr 2012 21:23:26 +0200 |
parent | 4370:be14f96290a4 |
child | 4924:d8b9fe5900a2 |
rev | line source |
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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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8 |
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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 |
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33 rooms = {}; |
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34 local rooms = rooms; |
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35 local persistent_rooms = datamanager.load(nil, muc_host, "persistent") or {}; |
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36 local component = hosts[module.host]; |
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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) core_post_stanza(component, 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 for jid in pairs(persistent_rooms) do |
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69 local node = jid_split(jid); |
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70 local data = datamanager.load(node, muc_host, "config") or {}; |
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71 local room = muc_new_room(jid, { |
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72 max_history_length = max_history_messages; |
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73 }); |
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74 room._data = data._data; |
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75 room._data.max_history_length = max_history_messages; -- Overwrite old max_history_length in data with current settings |
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76 room._affiliations = data._affiliations; |
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77 room.route_stanza = room_route_stanza; |
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78 room.save = room_save; |
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79 rooms[jid] = room; |
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80 end |
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81 |
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82 local host_room = muc_new_room(muc_host, { |
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83 max_history_length = max_history_messages; |
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84 }); |
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85 host_room.route_stanza = room_route_stanza; |
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86 host_room.save = room_save; |
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87 |
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88 local function get_disco_info(stanza) |
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89 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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90 :tag("identity", {category='conference', type='text', name=muc_name}):up() |
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91 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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92 end |
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93 local function get_disco_items(stanza) |
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94 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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95 for jid, room in pairs(rooms) do |
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96 if not room:is_hidden() then |
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97 reply:tag("item", {jid=jid, name=room:get_name()}):up(); |
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98 end |
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99 end |
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100 return reply; -- TODO cache disco reply |
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101 end |
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102 |
4370 | 103 local function handle_to_domain(event) |
104 local origin, stanza = event.origin, event.stanza; | |
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105 local type = stanza.attr.type; |
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106 if type == "error" or type == "result" then return; end |
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107 if stanza.name == "iq" and type == "get" then |
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108 local xmlns = stanza.tags[1].attr.xmlns; |
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109 if xmlns == "http://jabber.org/protocol/disco#info" then |
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110 origin.send(get_disco_info(stanza)); |
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111 elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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112 origin.send(get_disco_items(stanza)); |
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113 elseif xmlns == "http://jabber.org/protocol/muc#unique" then |
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114 origin.send(st.reply(stanza):tag("unique", {xmlns = xmlns}):text(uuid_gen())); -- FIXME Random UUIDs can theoretically have collisions |
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115 else |
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116 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc |
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117 end |
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118 else |
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119 host_room:handle_stanza(origin, stanza); |
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120 --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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121 end |
4370 | 122 return true; |
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123 end |
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124 |
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125 function stanza_handler(event) |
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126 local origin, stanza = event.origin, event.stanza; |
4370 | 127 local bare = jid_bare(stanza.attr.to); |
128 local room = rooms[bare]; | |
129 if not room then | |
130 if not(restrict_room_creation) or | |
131 (restrict_room_creation == "admin" and is_admin(stanza.attr.from)) or | |
132 (restrict_room_creation == "local" and select(2, jid_split(stanza.attr.from)) == module.host:gsub("^[^%.]+%.", "")) then | |
133 room = muc_new_room(bare, { | |
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134 max_history_length = max_history_messages; |
4370 | 135 }); |
136 room.route_stanza = room_route_stanza; | |
137 room.save = room_save; | |
138 rooms[bare] = room; | |
139 end | |
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140 end |
4370 | 141 if room then |
142 room:handle_stanza(origin, stanza); | |
143 if not next(room._occupants) and not persistent_rooms[room.jid] then -- empty, non-persistent room | |
144 rooms[bare] = nil; -- discard room | |
145 end | |
146 else | |
147 origin.send(st.error_reply(stanza, "cancel", "not-allowed")); | |
148 end | |
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149 return true; |
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150 end |
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151 module:hook("iq/bare", stanza_handler, -1); |
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152 module:hook("message/bare", stanza_handler, -1); |
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153 module:hook("presence/bare", stanza_handler, -1); |
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154 module:hook("iq/full", stanza_handler, -1); |
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155 module:hook("message/full", stanza_handler, -1); |
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156 module:hook("presence/full", stanza_handler, -1); |
4370 | 157 module:hook("iq/host", handle_to_domain, -1); |
158 module:hook("message/host", handle_to_domain, -1); | |
159 module:hook("presence/host", handle_to_domain, -1); | |
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160 |
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161 hosts[module.host].send = function(stanza) -- FIXME do a generic fix |
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162 if stanza.attr.type == "result" or stanza.attr.type == "error" then |
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163 core_post_stanza(component, stanza); |
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164 else error("component.send only supports result and error stanzas at the moment"); end |
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165 end |
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166 |
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167 prosody.hosts[module:get_host()].muc = { rooms = rooms }; |
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168 |
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169 module.save = function() |
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170 return {rooms = rooms}; |
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171 end |
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172 module.restore = function(data) |
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173 for jid, oldroom in pairs(data.rooms or {}) do |
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174 local room = muc_new_room(jid); |
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175 room._jid_nick = oldroom._jid_nick; |
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176 room._occupants = oldroom._occupants; |
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177 room._data = oldroom._data; |
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178 room._affiliations = oldroom._affiliations; |
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179 room.route_stanza = room_route_stanza; |
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180 room.save = room_save; |
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181 rooms[jid] = room; |
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182 end |
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183 prosody.hosts[module:get_host()].muc = { rooms = rooms }; |
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184 end |