Tue, 13 Jan 2009 22:37:07 +0500
modulemanager: Added reload support, with callbacks for saving and restoring state
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3 | local register_component = require "core.componentmanager".register_component; |
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4 | local deregister_component = require "core.componentmanager".deregister_component; |
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5 | local jid_split = require "util.jid".split; |
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6 | local jid_bare = require "util.jid".bare; |
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7 | local st = require "util.stanza"; |
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8 | local log = require "util.logger".init("mod_muc"); |
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9 | local multitable_new = require "util.multitable".new; |
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10 | |
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11 | local muc_domain = "conference."..module:get_host(); |
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12 | local muc_name = "MUCMUCMUC!!!"; |
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13 | |
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14 | -- room_name -> room |
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15 | -- occupant_room_nick -> data |
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16 | -- affiliation = ... |
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17 | -- role |
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18 | -- jid = occupant's real jid |
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19 | local rooms = multitable_new(); |
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20 | |
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21 | local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick |
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22 | |
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23 | -- room_name -> info |
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24 | -- name - the room's friendly name |
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25 | -- subject - the room's subject |
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26 | -- non-anonymous = true|nil |
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27 | -- persistent = true|nil |
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28 | local rooms_info = multitable_new(); |
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29 | |
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30 | local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {}; |
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31 | for room in pairs(persist_list) do |
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32 | rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil); |
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33 | end |
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34 | |
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35 | local component; |
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36 | |
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37 | function getUsingPath(stanza, path, getText) |
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38 | local tag = stanza; |
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39 | for _, name in ipairs(path) do |
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40 | if type(tag) ~= 'table' then return; end |
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41 | tag = tag:child_with_name(name); |
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42 | end |
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43 | if tag and getText then tag = table.concat(tag); end |
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44 | return tag; |
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45 | end |
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46 | function getTag(stanza, path) return getUsingPath(stanza, path); end |
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47 | function getText(stanza, path) return getUsingPath(stanza, path, true); end |
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48 | |
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49 | function get_disco_info(stanza) |
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50 | return st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info") |
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51 | :tag("identity", {category='conference', type='text', name=muc_name}):up() |
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52 | :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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53 | end |
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54 | function get_disco_items(stanza) |
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55 | local reply = st.iq({type='result', id=stanza.attr.id, from=muc_domain, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items"); |
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56 | for room in pairs(rooms_info:get()) do |
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57 | reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up(); |
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58 | end |
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59 | return reply; -- TODO cache disco reply |
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60 | end |
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61 | function get_room_disco_info(stanza) |
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62 | return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#info") |
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63 | :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up() |
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64 | :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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65 | end |
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66 | function get_room_disco_items(stanza) |
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67 | return st.iq({type='result', id=stanza.attr.id, from=stanza.attr.to, to=stanza.attr.from}):query("http://jabber.org/protocol/disco#items"); |
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68 | end -- TODO allow non-private rooms |
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69 | |
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70 | function save_room(room) |
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71 | local persistent = rooms_info:get(room, 'persistent'); |
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72 | if persistent then |
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73 | datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room)); |
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74 | end |
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75 | if persistent ~= persist_list[room] then |
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76 | if not persistent then |
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77 | datamanager.store(room, muc_domain, 'rooms', nil); |
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78 | end |
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79 | persist_list[room] = persistent; |
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80 | datamanager.store(nil, muc_domain, 'room_list', persist_list); |
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81 | end |
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82 | end |
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83 | |
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84 | function set_subject(current_nick, room, subject) |
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85 | -- TODO check nick's authority |
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86 | if subject == "" then subject = nil; end |
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87 | rooms_info:set(room, 'subject', subject); |
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88 | save_room(); |
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89 | broadcast_message(current_nick, room, subject or "", nil); |
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90 | return true; |
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91 | end |
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92 | |
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93 | function broadcast_presence(type, from, room, code) |
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94 | local data = rooms:get(room, from); |
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95 | local stanza = st.presence({type=type, from=from}) |
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96 | :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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97 | :tag("item", {affiliation=data.affiliation, role=data.role}):up(); |
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98 | if code then |
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99 | stanza:tag("status", {code=code}):up(); |
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100 | end |
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101 | local me; |
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102 | local r = rooms:get(room); |
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103 | if r then |
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104 | for occupant, o_data in pairs(r) do |
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105 | if occupant ~= from then |
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106 | stanza.attr.to = o_data.jid; |
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107 | core_route_stanza(component, stanza); |
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108 | else |
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109 | me = o_data.jid; |
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110 | end |
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111 | end |
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112 | end |
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113 | if me then |
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114 | stanza:tag("status", {code='110'}); |
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115 | stanza.attr.to = me; |
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116 | core_route_stanza(component, stanza); |
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117 | end |
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118 | end |
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119 | function broadcast_message(from, room, subject, body) |
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120 | local stanza = st.message({type='groupchat', from=from}); |
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121 | if subject then stanza:tag('subject'):text(subject):up(); end |
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122 | if body then stanza:tag('body'):text(body):up(); end |
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123 | local r = rooms:get(room); |
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124 | if r then |
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125 | for occupant, o_data in pairs(r) do |
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126 | stanza.attr.to = o_data.jid; |
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127 | core_route_stanza(component, stanza); |
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128 | end |
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129 | end |
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130 | end |
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131 | |
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132 | function handle_to_occupant(origin, stanza) -- PM, vCards, etc |
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133 | local from, to = stanza.attr.from, stanza.attr.to; |
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134 | local room = jid_bare(to); |
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135 | local current_nick = jid_nick:get(from, room); |
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136 | local type = stanza.attr.type; |
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137 | if stanza.name == "presence" then |
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138 | if type == "error" then -- error, kick em out! |
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139 | local data = rooms:get(room, to); |
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140 | data.role = 'none'; |
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141 | broadcast_presence('unavailable', to, room); -- TODO also add <status>This participant is kicked from the room because he sent an error presence: badformed error stanza</status> |
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142 | rooms:remove(room, to); |
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143 | jid_nick:remove(from, room); |
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144 | elseif type == "unavailable" then -- unavailable |
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145 | if current_nick == to then |
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146 | local data = rooms:get(room, to); |
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147 | data.role = 'none'; |
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148 | broadcast_presence('unavailable', to, room); |
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149 | rooms:remove(room, to); |
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150 | jid_nick:remove(from, room); |
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151 | end -- TODO else do nothing? |
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152 | elseif not type then -- available |
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153 | if current_nick then |
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154 | if current_nick == to then -- simple presence |
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155 | -- TODO broadcast |
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156 | else -- change nick |
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157 | if rooms:get(room, to) then |
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158 | origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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159 | else |
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160 | local data = rooms:get(room, current_nick); |
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161 | broadcast_presence('unavailable', current_nick, room, '303'); |
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162 | rooms:remove(room, current_nick); |
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163 | rooms:set(room, to, data); |
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164 | jid_nick:set(from, room, to); |
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165 | broadcast_presence(nil, to, room); |
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166 | end |
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167 | end |
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168 | else -- enter room |
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169 | if rooms:get(room, to) then |
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170 | origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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171 | else |
668
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172 | local data; |
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173 | if not rooms:get(room) and not rooms_info:get(room) then -- new room |
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174 | data = {affiliation='owner', role='moderator', jid=from}; |
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175 | end |
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176 | if not data then -- new occupant |
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177 | data = {affiliation='none', role='participant', jid=from}; |
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178 | end |
666
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179 | rooms:set(room, to, data); |
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180 | jid_nick:set(from, room, to); |
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181 | local r = rooms:get(room); |
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182 | if r then |
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183 | for occupant, o_data in pairs(r) do |
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184 | if occupant ~= from then |
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185 | local pres = st.presence({to=from, from=occupant}) |
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186 | :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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187 | :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up(); |
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188 | core_route_stanza(component, pres); |
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189 | end |
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190 | end |
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191 | end |
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192 | broadcast_presence(nil, to, room); |
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193 | -- TODO send discussion history |
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194 | if rooms_info:get(room, 'subject') then |
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195 | core_route_stanza(component, st.message({type='groupchat', from=room, to=from}):tag("subject"):text(rooms_info:get(room, 'subject'))); |
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196 | end |
666
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197 | end |
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198 | end |
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199 | elseif type ~= 'result' then -- bad type |
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200 | origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error? |
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201 | end |
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202 | elseif stanza.name == "message" and type == "groupchat" then |
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203 | -- groupchat messages not allowed in PM |
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204 | origin.send(st.error_reply(stanza, "modify", "bad-request")); |
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205 | else |
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206 | origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza |
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207 | end |
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208 | end |
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209 | |
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210 | function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc |
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211 | local type = stanza.attr.type; |
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212 | if stanza.name == "iq" and type == "get" then -- disco requests |
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213 | local xmlns = stanza.tags[1].attr.xmlns; |
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214 | if xmlns == "http://jabber.org/protocol/disco#info" then |
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215 | origin.send(get_room_disco_info(stanza)); |
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216 | elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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217 | origin.send(get_room_disco_items(stanza)); |
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218 | else |
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219 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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220 | end |
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221 | elseif stanza.name == "message" and type == "groupchat" then |
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222 | local from, to = stanza.attr.from, stanza.attr.to; |
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223 | local room = jid_bare(to); |
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224 | local current_nick = jid_nick:get(from, room); |
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225 | if not current_nick then -- not in room |
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226 | origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); |
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227 | else |
668
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228 | local subject = getText(stanza, {"subject"}); |
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229 | if subject then |
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230 | set_subject(current_nick, room, subject); |
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231 | else |
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232 | broadcast_message(current_nick, room, nil, getText(stanza, {"body"})); |
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233 | -- TODO add to discussion history |
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234 | end |
666
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235 | end |
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236 | else |
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237 | if type == "error" or type == "result" then return; end |
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238 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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239 | end |
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240 | end |
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241 | |
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242 | function handle_to_domain(origin, stanza) |
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243 | local type = stanza.attr.type; |
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244 | if type == "error" or type == "result" then return; end |
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245 | if stanza.name == "iq" and type == "get" then |
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246 | local xmlns = stanza.tags[1].attr.xmlns; |
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247 | if xmlns == "http://jabber.org/protocol/disco#info" then |
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248 | origin.send(get_disco_info(stanza)); |
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249 | elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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250 | origin.send(get_disco_items(stanza)); |
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251 | else |
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252 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc |
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253 | end |
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254 | else |
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255 | 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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256 | end |
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257 | end |
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258 | |
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259 | component = register_component(muc_domain, function(origin, stanza) |
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260 | local to_node, to_host, to_resource = jid_split(stanza.attr.to); |
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261 | if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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262 | if type == "error" or type == "result" then return; end |
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263 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate? |
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264 | elseif to_resource and not to_node then |
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265 | if type == "error" or type == "result" then return; end |
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266 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource |
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267 | elseif to_resource then |
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268 | handle_to_occupant(origin, stanza); |
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269 | elseif to_node then |
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270 | handle_to_room(origin, stanza) |
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271 | else -- to the main muc domain |
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272 | if type == "error" or type == "result" then return; end |
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273 | handle_to_domain(origin, stanza); |
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274 | end |
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275 | end); |
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276 | |
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277 | function unload() |
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278 | deregister_component(muc_domain); |
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279 | end |
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280 |