Sun, 15 Feb 2009 15:56:04 +0000
util.pposix: Add getuid/setuid (we don't use them yet)
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1 | |
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2 | |
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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; |
782 | 10 | local t_insert, t_remove = table.insert, table.remove; |
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11 | |
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12 | if module:get_host_type() ~= "component" then |
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13 | error("MUC should be loaded as a component, please see http://prosody.im/doc/components", 0); |
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14 | end |
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15 | |
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16 | local muc_domain = module:get_host(); |
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17 | local muc_name = "MUCMUCMUC!!!"; |
782 | 18 | local history_length = 20; |
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19 | |
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20 | -- room_name -> room |
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21 | -- occupant_room_nick -> data |
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22 | -- affiliation = ... |
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23 | -- role |
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24 | -- jid = occupant's real jid |
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25 | local rooms = multitable_new(); |
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26 | |
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27 | local jid_nick = multitable_new(); -- real jid -> room's jid -> room nick |
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28 | |
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29 | -- room_name -> info |
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30 | -- name - the room's friendly name |
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31 | -- subject - the room's subject |
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32 | -- non-anonymous = true|nil |
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33 | -- persistent = true|nil |
782 | 34 | -- history = {preserialized stanzas} |
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35 | local rooms_info = multitable_new(); |
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36 | |
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37 | local persist_list = datamanager.load(nil, muc_domain, 'room_list') or {}; |
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38 | for room in pairs(persist_list) do |
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39 | rooms_info:set(room, datamanager.store(room, muc_domain, 'rooms') or nil); |
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40 | end |
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41 | |
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42 | local component; |
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43 | |
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44 | function getUsingPath(stanza, path, getText) |
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45 | local tag = stanza; |
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46 | for _, name in ipairs(path) do |
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47 | if type(tag) ~= 'table' then return; end |
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48 | tag = tag:child_with_name(name); |
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49 | end |
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50 | if tag and getText then tag = table.concat(tag); end |
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51 | return tag; |
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52 | end |
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53 | function getTag(stanza, path) return getUsingPath(stanza, path); end |
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54 | function getText(stanza, path) return getUsingPath(stanza, path, true); end |
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55 | |
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56 | function get_disco_info(stanza) |
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57 | 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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58 | :tag("identity", {category='conference', type='text', name=muc_name}):up() |
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59 | :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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60 | end |
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61 | function get_disco_items(stanza) |
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62 | 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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63 | for room in pairs(rooms_info:get()) do |
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64 | reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up(); |
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65 | end |
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66 | return reply; -- TODO cache disco reply |
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67 | end |
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68 | function get_room_disco_info(stanza) |
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69 | 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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70 | :tag("identity", {category='conference', type='text', name=rooms_info:get(stanza.attr.to, "name")}):up() |
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71 | :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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72 | end |
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73 | function get_room_disco_items(stanza) |
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74 | 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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75 | end -- TODO allow non-private rooms |
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76 | |
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77 | function save_room(room) |
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78 | local persistent = rooms_info:get(room, 'persistent'); |
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79 | if persistent then |
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80 | datamanager.store(room, muc_domain, 'rooms', rooms_info:get(room)); |
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81 | end |
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82 | if persistent ~= persist_list[room] then |
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83 | if not persistent then |
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84 | datamanager.store(room, muc_domain, 'rooms', nil); |
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85 | end |
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86 | persist_list[room] = persistent; |
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87 | datamanager.store(nil, muc_domain, 'room_list', persist_list); |
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88 | end |
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89 | end |
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90 | |
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91 | function set_subject(current_nick, room, subject) |
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92 | -- TODO check nick's authority |
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93 | if subject == "" then subject = nil; end |
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94 | rooms_info:set(room, 'subject', subject); |
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95 | save_room(); |
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96 | broadcast_message(current_nick, room, subject or "", nil); |
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97 | return true; |
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98 | end |
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99 | |
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100 | function broadcast_presence(type, from, room, code, newnick) |
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101 | local data = rooms:get(room, from); |
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102 | local stanza = st.presence({type=type, from=from}) |
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103 | :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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104 | :tag("item", {affiliation=data.affiliation, role=data.role, nick = newnick}):up(); |
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105 | if code then |
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106 | stanza:tag("status", {code=code}):up(); |
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107 | end |
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108 | local me; |
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109 | local r = rooms:get(room); |
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110 | if r then |
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111 | for occupant, o_data in pairs(r) do |
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112 | if occupant ~= from then |
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113 | stanza.attr.to = o_data.jid; |
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114 | core_route_stanza(component, stanza); |
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115 | else |
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116 | me = o_data.jid; |
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117 | end |
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118 | end |
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119 | end |
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120 | if me then |
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121 | stanza:tag("status", {code='110'}); |
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122 | stanza.attr.to = me; |
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123 | core_route_stanza(component, stanza); |
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124 | end |
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125 | end |
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126 | function broadcast_message(from, room, subject, body) |
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127 | local stanza = st.message({type='groupchat', from=from}); |
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128 | if subject then stanza:tag('subject'):text(subject):up(); end |
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129 | if body then stanza:tag('body'):text(body):up(); end |
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130 | local r = rooms:get(room); |
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131 | if r then |
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132 | for occupant, o_data in pairs(r) do |
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133 | stanza.attr.to = o_data.jid; |
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134 | core_route_stanza(component, stanza); |
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135 | end |
782 | 136 | if not subject and body then -- add to history |
137 | local history = rooms_info:get(room, 'history'); | |
138 | if not history then history = {}; rooms_info:set(room, 'history', history); end | |
139 | -- stanza = st.deserialize(st.preserialize(stanza)); | |
140 | stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203 | |
141 | stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated) | |
142 | t_insert(history, st.preserialize(stanza)); | |
143 | while #history > history_length do t_remove(history, 1) end | |
144 | end | |
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145 | end |
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146 | end |
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147 | |
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148 | function handle_to_occupant(origin, stanza) -- PM, vCards, etc |
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149 | local from, to = stanza.attr.from, stanza.attr.to; |
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150 | local room = jid_bare(to); |
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151 | local current_nick = jid_nick:get(from, room); |
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152 | local type = stanza.attr.type; |
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153 | if stanza.name == "presence" then |
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154 | if type == "error" then -- error, kick em out! |
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155 | local data = rooms:get(room, to); |
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156 | data.role = 'none'; |
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157 | 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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158 | rooms:remove(room, to); |
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159 | jid_nick:remove(from, room); |
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160 | elseif type == "unavailable" then -- unavailable |
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161 | if current_nick == to then |
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162 | local data = rooms:get(room, to); |
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163 | data.role = 'none'; |
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164 | broadcast_presence('unavailable', to, room); |
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165 | rooms:remove(room, to); |
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166 | jid_nick:remove(from, room); |
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167 | end -- TODO else do nothing? |
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168 | elseif not type then -- available |
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169 | if current_nick then |
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170 | if current_nick == to then -- simple presence |
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171 | -- TODO broadcast |
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172 | else -- change nick |
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173 | if rooms:get(room, to) then |
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174 | origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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175 | else |
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176 | local data = rooms:get(room, current_nick); |
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177 | local to_nick = select(3, jid_split(to)); |
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178 | if to_nick then |
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179 | broadcast_presence('unavailable', current_nick, room, '303', to_nick); |
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180 | rooms:remove(room, current_nick); |
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181 | rooms:set(room, to, data); |
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182 | jid_nick:set(from, room, to); |
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183 | broadcast_presence(nil, to, room, nil); |
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184 | else |
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185 | --TODO: malformed-jid |
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186 | end |
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187 | end |
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188 | end |
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189 | else -- enter room |
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190 | if rooms:get(room, to) then |
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191 | origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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192 | else |
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193 | local data; |
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194 | if not rooms:get(room) and not rooms_info:get(room) then -- new room |
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195 | data = {affiliation='owner', role='moderator', jid=from}; |
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196 | end |
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197 | if not data then -- new occupant |
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198 | data = {affiliation='none', role='participant', jid=from}; |
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199 | end |
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200 | rooms:set(room, to, data); |
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201 | jid_nick:set(from, room, to); |
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202 | local r = rooms:get(room); |
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203 | if r then |
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204 | for occupant, o_data in pairs(r) do |
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205 | if occupant ~= from then |
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206 | local pres = st.presence({to=from, from=occupant}) |
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207 | :tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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208 | :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up(); |
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209 | core_route_stanza(component, pres); |
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210 | end |
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211 | end |
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212 | end |
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213 | broadcast_presence(nil, to, room); |
782 | 214 | local history = rooms_info:get(room, 'history'); -- send discussion history |
215 | if history then | |
216 | for _, msg in ipairs(history) do | |
217 | msg = st.deserialize(msg); | |
218 | msg.attr.to=from; | |
219 | core_route_stanza(component, msg); | |
220 | end | |
221 | end | |
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222 | if rooms_info:get(room, 'subject') then |
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223 | core_route_stanza(component, st.message({type='groupchat', from=room, to=from}):tag("subject"):text(rooms_info:get(room, 'subject'))); |
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224 | end |
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225 | end |
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226 | end |
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227 | elseif type ~= 'result' then -- bad type |
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228 | origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error? |
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229 | end |
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230 | elseif stanza.name == "message" and type == "groupchat" then |
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231 | -- groupchat messages not allowed in PM |
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232 | origin.send(st.error_reply(stanza, "modify", "bad-request")); |
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233 | else |
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234 | origin.send(st.error_reply(stanza, "cancel", "not-implemented", "Private stanzas not implemented")); -- TODO route private stanza |
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235 | end |
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236 | end |
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237 | |
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238 | function handle_to_room(origin, stanza) -- presence changes and groupchat messages, along with disco/etc |
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239 | local type = stanza.attr.type; |
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240 | if stanza.name == "iq" and type == "get" then -- disco requests |
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241 | local xmlns = stanza.tags[1].attr.xmlns; |
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242 | if xmlns == "http://jabber.org/protocol/disco#info" then |
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243 | origin.send(get_room_disco_info(stanza)); |
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244 | elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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245 | origin.send(get_room_disco_items(stanza)); |
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246 | else |
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247 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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248 | end |
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249 | elseif stanza.name == "message" and type == "groupchat" then |
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250 | local from, to = stanza.attr.from, stanza.attr.to; |
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251 | local room = jid_bare(to); |
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252 | local current_nick = jid_nick:get(from, room); |
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253 | if not current_nick then -- not in room |
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254 | origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); |
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255 | else |
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256 | local subject = getText(stanza, {"subject"}); |
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257 | if subject then |
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258 | set_subject(current_nick, room, subject); |
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259 | else |
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260 | broadcast_message(current_nick, room, nil, getText(stanza, {"body"})); |
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261 | -- TODO add to discussion history |
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262 | end |
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263 | end |
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264 | else |
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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")); |
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267 | end |
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268 | end |
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269 | |
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270 | function handle_to_domain(origin, stanza) |
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271 | local type = stanza.attr.type; |
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272 | if type == "error" or type == "result" then return; end |
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273 | if stanza.name == "iq" and type == "get" then |
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274 | local xmlns = stanza.tags[1].attr.xmlns; |
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275 | if xmlns == "http://jabber.org/protocol/disco#info" then |
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276 | origin.send(get_disco_info(stanza)); |
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277 | elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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278 | origin.send(get_disco_items(stanza)); |
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279 | else |
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280 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc |
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281 | end |
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282 | else |
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283 | 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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284 | end |
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285 | end |
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286 | |
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287 | register_component(muc_domain, function(origin, stanza) |
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288 | local to_node, to_host, to_resource = jid_split(stanza.attr.to); |
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289 | if stanza.name == "presence" and stanza.attr.type ~= nil and stanza.attr.type ~= "unavailable" then |
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290 | if type == "error" or type == "result" then return; end |
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291 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- FIXME what's appropriate? |
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292 | elseif to_resource and not to_node then |
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293 | if type == "error" or type == "result" then return; end |
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294 | origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource |
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295 | elseif to_resource then |
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296 | handle_to_occupant(origin, stanza); |
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297 | elseif to_node then |
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298 | handle_to_room(origin, stanza) |
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299 | else -- to the main muc domain |
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300 | if type == "error" or type == "result" then return; end |
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301 | handle_to_domain(origin, stanza); |
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302 | end |
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303 | end); |
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304 | |
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305 | module.unload = function() |
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306 | deregister_component(muc_domain); |
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307 | end |
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308 | module.save = function() |
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309 | return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list}; |
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310 | end |
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311 | module.restore = function(data) |
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312 | rooms.data, jid_nick.data, rooms_info.data, persist_list = |
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313 | data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {}; |
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314 | end |