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util/muc.lua @ 1502:0f895c06e03f
mod_console: Check for commands when not executing in the global environment
author | Matthew Wild <mwild1@gmail.com> |
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date | Thu, 09 Jul 2009 04:34:55 +0100 |
parent | 1427:3bcab7c71edf |
child | 1523:841d61be198f |
rev | line source |
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1 -- Prosody IM v0.4 |
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2 -- Copyright (C) 2008-2009 Matthew Wild |
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3 -- Copyright (C) 2008-2009 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 local datamanager = require "util.datamanager"; |
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10 local datetime = require "util.datetime"; |
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11 |
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12 local jid_split = require "util.jid".split; |
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13 local jid_bare = require "util.jid".bare; |
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14 local st = require "util.stanza"; |
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15 local log = require "util.logger".init("mod_muc"); |
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16 local multitable_new = require "util.multitable".new; |
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17 local t_insert, t_remove = table.insert, table.remove; |
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18 |
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19 local muc_domain = nil; --module:get_host(); |
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20 local history_length = 20; |
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21 |
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22 ------------ |
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23 local function filter_xmlns_from_array(array, filters) |
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24 local count = 0; |
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25 for i=#array,1,-1 do |
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26 local attr = array[i].attr; |
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27 if filters[attr and attr.xmlns] then |
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28 t_remove(array, i); |
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29 count = count + 1; |
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30 end |
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31 end |
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32 return count; |
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33 end |
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34 local function filter_xmlns_from_stanza(stanza, filters) |
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35 if filters then |
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36 if filter_xmlns_from_array(stanza.tags, filters) ~= 0 then |
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37 return stanza, filter_xmlns_from_array(stanza, filters); |
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38 end |
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39 end |
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40 return stanza, 0; |
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41 end |
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42 local presence_filters = {["http://jabber.org/protocol/muc"]=true;["http://jabber.org/protocol/muc#user"]=true}; |
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43 local function get_filtered_presence(stanza) |
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44 return filter_xmlns_from_stanza(st.clone(stanza), presence_filters); |
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45 end |
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46 local kickable_error_conditions = { |
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47 ["gone"] = true; |
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48 ["internal-server-error"] = true; |
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49 ["item-not-found"] = true; |
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50 ["jid-malformed"] = true; |
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51 ["recipient-unavailable"] = true; |
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52 ["redirect"] = true; |
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53 ["remote-server-not-found"] = true; |
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54 ["remote-server-timeout"] = true; |
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55 ["service-unavailable"] = true; |
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56 }; |
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57 local function get_kickable_error(stanza) |
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58 for _, tag in ipairs(stanza.tags) do |
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59 if tag.name == "error" and tag.attr.xmlns == "jabber:client" then |
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60 for _, cond in ipairs(tag.tags) do |
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61 if cond.attr.xmlns == "urn:ietf:params:xml:ns:xmpp-stanzas" then |
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62 return kickable_error_conditions[cond.name] and cond.name; |
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63 end |
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64 end |
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65 return true; -- malformed error message |
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66 end |
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67 end |
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68 return true; -- malformed error message |
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69 end |
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70 local function getUsingPath(stanza, path, getText) |
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71 local tag = stanza; |
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72 for _, name in ipairs(path) do |
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73 if type(tag) ~= 'table' then return; end |
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74 tag = tag:child_with_name(name); |
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75 end |
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76 if tag and getText then tag = table.concat(tag); end |
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77 return tag; |
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78 end |
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79 local function getTag(stanza, path) return getUsingPath(stanza, path); end |
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80 local function getText(stanza, path) return getUsingPath(stanza, path, true); end |
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81 ----------- |
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82 |
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83 --[[function get_room_disco_info(room, stanza) |
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84 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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85 :tag("identity", {category='conference', type='text', name=room._data["name"]):up() |
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86 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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87 end |
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88 function get_room_disco_items(room, stanza) |
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89 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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90 end -- TODO allow non-private rooms]] |
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91 |
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92 -- |
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93 |
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94 local function room_broadcast_presence(room, stanza, code, nick) |
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95 stanza = get_filtered_presence(stanza); |
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96 local data = room._participants[stanza.attr.from]; |
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97 stanza:tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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98 :tag("item", {affiliation=data.affiliation, role=data.role, nick=nick}):up(); |
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99 if code then |
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100 stanza:tag("status", {code=code}):up(); |
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101 end |
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102 local me; |
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103 for occupant, o_data in pairs(room._participants) do |
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104 if occupant ~= stanza.attr.from then |
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105 for jid in pairs(o_data.sessions) do |
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106 stanza.attr.to = jid; |
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107 room:route_stanza(stanza); |
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108 end |
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109 else |
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110 me = o_data; |
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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 for jid in pairs(me.sessions) do |
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116 stanza.attr.to = jid; |
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117 room:route_stanza(stanza); |
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118 end |
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119 end |
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120 end |
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121 local function room_broadcast_message(room, stanza, historic) |
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122 for occupant, o_data in pairs(room._participants) do |
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123 for jid in pairs(o_data.sessions) do |
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124 stanza.attr.to = jid; |
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125 room:route_stanza(stanza); |
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126 end |
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127 end |
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128 if historic then -- add to history |
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129 local history = room._data['history']; |
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130 if not history then history = {}; room._data['history'] = history; end |
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131 -- stanza = st.clone(stanza); |
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132 stanza:tag("delay", {xmlns = "urn:xmpp:delay", from = muc_domain, stamp = datetime.datetime()}):up(); -- XEP-0203 |
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133 stanza:tag("x", {xmlns = "jabber:x:delay", from = muc_domain, stamp = datetime.legacy()}):up(); -- XEP-0091 (deprecated) |
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134 t_insert(history, st.clone(st.preserialize(stanza))); |
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135 while #history > history_length do t_remove(history, 1) end |
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136 end |
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137 end |
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138 |
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139 |
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140 local function room_send_occupant_list(room, to) |
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141 local current_nick = room._jid_nick[to]; |
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142 for occupant, o_data in pairs(room._participants) do |
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143 if occupant ~= current_nick then |
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144 local pres = get_filtered_presence(o_data.sessions[o_data.jid]); |
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145 pres.attr.to, pres.attr.from = to, occupant; |
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146 pres:tag("x", {xmlns='http://jabber.org/protocol/muc#user'}) |
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147 :tag("item", {affiliation=o_data.affiliation, role=o_data.role}):up(); |
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148 room:route_stanza(pres); |
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149 end |
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150 end |
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151 end |
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152 local function room_send_history(room, to) |
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153 local history = room._data['history']; -- send discussion history |
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154 if history then |
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155 for _, msg in ipairs(history) do |
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156 msg = st.deserialize(msg); |
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157 msg.attr.to=to; |
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158 room:route_stanza(msg); |
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159 end |
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160 end |
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161 if room._data['subject'] then |
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162 room:route_stanza(st.message({type='groupchat', from=room, to=to}):tag("subject"):text(room._data['subject'])); |
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163 end |
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164 end |
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165 |
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166 local function room_get_disco_info(self, stanza) end |
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167 local function room_get_disco_items(self, stanza) end |
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168 local function room_set_subject(room, current_nick, subject) |
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169 -- TODO check nick's authority |
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170 if subject == "" then subject = nil; end |
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171 room._data['subject'] = subject; |
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172 local msg = st.message({type='groupchat', from=current_nick}) |
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173 :tag('subject'):text(subject):up(); |
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174 room_broadcast_message(room, msg, false); |
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175 return true; |
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176 end |
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177 |
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178 local function room_handle_to_occupant(self, origin, stanza) -- PM, vCards, etc |
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179 local from, to = stanza.attr.from, stanza.attr.to; |
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180 local room = jid_bare(to); |
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181 local current_nick = self._jid_nick[from]; |
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182 local type = stanza.attr.type; |
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183 log("debug", "room: %s, current_nick: %s, stanza: %s", room or "nil", current_nick or "nil", stanza:top_tag()); |
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184 if (select(2, jid_split(from)) == muc_domain) then error("Presence from the MUC itself!!!"); end |
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185 if stanza.name == "presence" then |
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186 local pr = get_filtered_presence(stanza); |
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187 pr.attr.from = current_nick; |
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188 if type == "error" then -- error, kick em out! |
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189 if current_nick then |
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190 log("debug", "kicking %s from %s", current_nick, room); |
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191 room_handle_to_occupant(self, origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error presence')); -- send unavailable |
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192 end |
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193 elseif type == "unavailable" then -- unavailable |
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194 if current_nick then |
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195 log("debug", "%s leaving %s", current_nick, room); |
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196 local data = self._participants[current_nick]; |
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197 data.role = 'none'; |
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198 room_broadcast_presence(self, pr); |
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199 self._participants[current_nick] = nil; |
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200 self._jid_nick[from] = nil; |
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201 end |
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202 elseif not type then -- available |
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203 if current_nick then |
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204 --if #pr == #stanza or current_nick ~= to then -- commented because google keeps resending directed presence |
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205 if current_nick == to then -- simple presence |
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206 log("debug", "%s broadcasted presence", current_nick); |
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207 self._participants[current_nick].sessions[from] = pr; |
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208 room_broadcast_presence(self, pr); |
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209 else -- change nick |
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210 if self._participants[to] then |
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211 log("debug", "%s couldn't change nick", current_nick); |
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212 origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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213 else |
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214 local data = self._participants[current_nick]; |
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215 local to_nick = select(3, jid_split(to)); |
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216 if to_nick then |
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217 log("debug", "%s (%s) changing nick to %s", current_nick, data.jid, to); |
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218 local p = st.presence({type='unavailable', from=current_nick}); |
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219 room_broadcast_presence(self, p, '303', to_nick); |
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220 self._participants[current_nick] = nil; |
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221 self._participants[to] = data; |
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222 self._jid_nick[from] = to; |
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223 pr.attr.from = to; |
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224 self._participants[to].sessions[from] = pr; |
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225 room_broadcast_presence(self, pr); |
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226 else |
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227 --TODO malformed-jid |
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228 end |
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229 end |
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230 end |
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231 --else -- possible rejoin |
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232 -- log("debug", "%s had connection replaced", current_nick); |
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233 -- handle_to_occupant(origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('Replaced by new connection'):up()); -- send unavailable |
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234 -- handle_to_occupant(origin, stanza); -- resend available |
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235 --end |
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236 else -- enter room |
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237 local new_nick = to; |
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238 if self._participants[to] then |
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239 new_nick = nil; |
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240 end |
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241 if not new_nick then |
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242 log("debug", "%s couldn't join due to nick conflict: %s", from, to); |
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243 origin.send(st.error_reply(stanza, "cancel", "conflict")); |
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244 else |
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245 log("debug", "%s joining as %s", from, to); |
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246 local data; |
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247 -- if not rooms:get(room) and not rooms_info:get(room) then -- new room |
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248 -- rooms_info:set(room, 'name', (jid_split(room))); |
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249 -- data = {affiliation='owner', role='moderator', jid=from, sessions={[from]=get_filtered_presence(stanza)}}; |
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250 -- end |
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251 if not data then -- new occupant |
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252 data = {affiliation='none', role='participant', jid=from, sessions={[from]=get_filtered_presence(stanza)}}; |
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253 end |
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254 self._participants[to] = data; |
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255 self._jid_nick[from] = to; |
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256 room_send_occupant_list(self, from); |
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257 pr.attr.from = to; |
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258 room_broadcast_presence(self, pr); |
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259 room_send_history(self, from); |
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260 end |
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261 end |
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262 elseif type ~= 'result' then -- bad type |
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263 origin.send(st.error_reply(stanza, "modify", "bad-request")); -- FIXME correct error? |
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264 end |
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265 elseif not current_nick and type ~= "error" and type ~= "result" then -- not in room |
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266 origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); |
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267 elseif stanza.name == "message" and type == "groupchat" then -- groupchat messages not allowed in PM |
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268 origin.send(st.error_reply(stanza, "modify", "bad-request")); |
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269 elseif stanza.name == "message" and type == "error" and get_kickable_error(stanza) then |
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270 log("debug", "%s kicked from %s for sending an error message", current_nick, room); |
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271 room_handle_to_occupant(self, origin, st.presence({type='unavailable', from=from, to=to}):tag('status'):text('This participant is kicked from the room because he sent an error message to another occupant')); -- send unavailable |
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272 else -- private stanza |
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273 local o_data = self._participants[to]; |
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274 if o_data then |
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275 log("debug", "%s sent private stanza to %s (%s)", from, to, o_data.jid); |
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276 local jid = o_data.jid; |
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277 -- TODO if stanza.name=='iq' and type=='get' and stanza.tags[1].attr.xmlns == 'vcard-temp' then jid = jid_bare(jid); end |
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278 stanza.attr.to, stanza.attr.from = jid, current_nick; |
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279 self:route_stanza(stanza); |
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280 elseif type ~= "error" and type ~= "result" then -- recipient not in room |
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281 origin.send(st.error_reply(stanza, "cancel", "item-not-found", "Recipient not in room")); |
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282 end |
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283 end |
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284 end |
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285 |
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286 local function room_handle_to_room(self, origin, stanza) -- presence changes and groupchat messages, along with disco/etc |
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287 local type = stanza.attr.type; |
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288 if stanza.name == "iq" and type == "get" then -- disco requests |
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289 local xmlns = stanza.tags[1].attr.xmlns; |
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290 if xmlns == "http://jabber.org/protocol/disco#info" then |
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291 origin.send(room_get_disco_info(self, stanza)); |
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292 elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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293 origin.send(room_get_disco_items(self, stanza)); |
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294 else |
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295 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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296 end |
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297 elseif stanza.name == "message" and type == "groupchat" then |
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298 local from, to = stanza.attr.from, stanza.attr.to; |
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299 local room = jid_bare(to); |
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300 local current_nick = self._jid_nick[from]; |
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301 if not current_nick then -- not in room |
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302 origin.send(st.error_reply(stanza, "cancel", "not-acceptable")); |
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303 else |
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304 local from = stanza.attr.from; |
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305 stanza.attr.from = current_nick; |
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306 local subject = getText(stanza, {"subject"}); |
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307 if subject then |
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308 self:set_subject(current_nick, subject); -- TODO use broadcast_message_stanza |
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309 else |
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310 room_broadcast_message(self, stanza, true); |
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311 end |
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312 end |
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313 elseif stanza.name == "presence" then -- hack - some buggy clients send presence updates to the room rather than their nick |
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314 local to = stanza.attr.to; |
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315 local current_nick = self._jid_nick[stanza.attr.from]; |
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316 if current_nick then |
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317 stanza.attr.to = current_nick; |
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318 room_handle_to_occupant(self, origin, stanza); |
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319 stanza.attr.to = to; |
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320 elseif type ~= "error" and type ~= "result" then |
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321 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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322 end |
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323 elseif stanza.name == "message" and not stanza.attr.type and #stanza.tags == 1 and self._jid_nick[stanza.attr.from] |
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324 and stanza.tags[1].name == "x" and stanza.tags[1].attr.xmlns == "http://jabber.org/protocol/muc#user" and #stanza.tags[1].tags == 1 |
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325 and stanza.tags[1].tags[1].name == "invite" and stanza.tags[1].tags[1].attr.to then |
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326 local _from, _to = stanza.attr.from, stanza.attr.to; |
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327 local _invitee = stanza.tags[1].tags[1].attr.to; |
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328 stanza.attr.from, stanza.attr.to = _to, _invitee; |
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329 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = _from, nil; |
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330 self:route_stanza(stanza); |
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331 stanza.tags[1].tags[1].attr.from, stanza.tags[1].tags[1].attr.to = nil, _invitee; |
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332 stanza.attr.from, stanza.attr.to = _from, _to; |
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333 else |
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334 if type == "error" or type == "result" then return; end |
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335 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); |
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336 end |
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337 end |
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338 |
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339 local function room_handle_stanza(self, origin, stanza) |
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340 local to_node, to_host, to_resource = jid_split(stanza.attr.to); |
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341 if to_resource then |
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342 room_handle_to_occupant(self, origin, stanza); |
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343 else |
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344 room_handle_to_room(self, origin, stanza); |
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345 end |
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346 end |
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347 |
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348 module "muc" |
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349 |
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350 function new_room(jid) |
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351 return { |
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352 jid = jid; |
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353 handle_stanza = room_handle_stanza; |
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354 set_subject = room_set_subject; |
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355 route_stanza = function(room, stanza) end; -- Replace with a routing function, e.g., function(room, stanza) core_route_stanza(origin, stanza); end |
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356 _jid_nick = {}; |
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357 _participants = {}; |
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358 _data = {}; |
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359 } |
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360 end |
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361 |
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362 return _M; |
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363 |
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364 --[[function get_disco_info(stanza) |
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365 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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366 :tag("identity", {category='conference', type='text', name=muc_name}):up() |
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367 :tag("feature", {var="http://jabber.org/protocol/muc"}); -- TODO cache disco reply |
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368 end |
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369 function get_disco_items(stanza) |
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370 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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371 for room in pairs(rooms_info:get()) do |
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372 reply:tag("item", {jid=room, name=rooms_info:get(room, "name")}):up(); |
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373 end |
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374 return reply; -- TODO cache disco reply |
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375 end]] |
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376 |
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377 --[[function handle_to_domain(origin, stanza) |
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378 local type = stanza.attr.type; |
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379 if type == "error" or type == "result" then return; end |
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380 if stanza.name == "iq" and type == "get" then |
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381 local xmlns = stanza.tags[1].attr.xmlns; |
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382 if xmlns == "http://jabber.org/protocol/disco#info" then |
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383 origin.send(get_disco_info(stanza)); |
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384 elseif xmlns == "http://jabber.org/protocol/disco#items" then |
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385 origin.send(get_disco_items(stanza)); |
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386 else |
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387 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- TODO disco/etc |
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388 end |
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389 else |
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390 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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391 end |
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392 end |
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393 |
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394 register_component(muc_domain, function(origin, stanza) |
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395 local to_node, to_host, to_resource = jid_split(stanza.attr.to); |
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396 if to_resource and not to_node then |
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397 if type == "error" or type == "result" then return; end |
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398 origin.send(st.error_reply(stanza, "cancel", "service-unavailable")); -- host/resource |
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399 elseif to_resource then |
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400 handle_to_occupant(origin, stanza); |
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401 elseif to_node then |
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402 handle_to_room(origin, stanza) |
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403 else -- to the main muc domain |
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404 if type == "error" or type == "result" then return; end |
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405 handle_to_domain(origin, stanza); |
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406 end |
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407 end);]] |
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408 |
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409 --[[module.unload = function() |
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410 deregister_component(muc_domain); |
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411 end |
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412 module.save = function() |
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413 return {rooms = rooms.data; jid_nick = jid_nick.data; rooms_info = rooms_info.data; persist_list = persist_list}; |
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414 end |
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415 module.restore = function(data) |
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416 rooms.data, jid_nick.data, rooms_info.data, persist_list = |
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417 data.rooms or {}, data.jid_nick or {}, data.rooms_info or {}, data.persist_list or {}; |
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418 end]] |