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net/xmppcomponent_listener.lua @ 2921:f0ddfd7739ea
util.xmppstream: new() now returns a parser object
| author | Matthew Wild <mwild1@gmail.com> |
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| date | Mon, 22 Mar 2010 16:55:10 +0000 |
| parent | 2759:48e8832e5cab |
| child | 2925:692b3c6c5bd2 |
| rev | line source |
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1 -- Prosody IM |
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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 |
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10 local hosts = _G.hosts; |
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11 |
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12 local t_concat = table.concat; |
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13 |
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14 local lxp = require "lxp"; |
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15 local logger = require "util.logger"; |
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16 local config = require "core.configmanager"; |
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17 local connlisteners = require "net.connlisteners"; |
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18 local cm_register_component = require "core.componentmanager".register_component; |
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19 local cm_deregister_component = require "core.componentmanager".deregister_component; |
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20 local uuid_gen = require "util.uuid".generate; |
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21 local sha1 = require "util.hashes".sha1; |
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22 local st = require "util.stanza"; |
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23 local init_xmlhandlers = require "core.xmlhandlers"; |
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24 |
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25 local sessions = {}; |
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26 |
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27 local log = logger.init("componentlistener"); |
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28 |
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29 local component_listener = { default_port = 5347; default_mode = "*a"; default_interface = config.get("*", "core", "component_interface") or "127.0.0.1" }; |
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30 |
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31 local xmlns_component = 'jabber:component:accept'; |
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32 |
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33 --- Callbacks/data for xmlhandlers to handle streams for us --- |
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34 |
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35 local stream_callbacks = { default_ns = xmlns_component }; |
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36 |
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37 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams"; |
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38 |
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39 function stream_callbacks.error(session, error, data, data2) |
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40 if session.destroyed then return; end |
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41 log("warn", "Error processing component stream: "..tostring(error)); |
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42 if error == "no-stream" then |
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43 session:close("invalid-namespace"); |
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44 elseif error == "parse-error" then |
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45 session.log("warn", "External component %s XML parse error: %s", tostring(session.host), tostring(data)); |
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46 session:close("xml-not-well-formed"); |
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47 elseif error == "stream-error" then |
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48 local condition, text = "undefined-condition"; |
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49 for child in data:children() do |
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50 if child.attr.xmlns == xmlns_xmpp_streams then |
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51 if child.name ~= "text" then |
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52 condition = child.name; |
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53 else |
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54 text = child:get_text(); |
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55 end |
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56 if condition ~= "undefined-condition" and text then |
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57 break; |
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58 end |
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59 end |
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60 end |
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61 text = condition .. (text and (" ("..text..")") or ""); |
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62 session.log("info", "Session closed by remote with error: %s", text); |
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63 session:close(nil, text); |
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64 end |
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65 end |
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66 |
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67 function stream_callbacks.streamopened(session, attr) |
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68 if config.get(attr.to, "core", "component_module") ~= "component" then |
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69 -- Trying to act as a component domain which |
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70 -- hasn't been configured |
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71 session:close{ condition = "host-unknown", text = tostring(attr.to).." does not match any configured external components" }; |
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72 return; |
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73 end |
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74 |
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75 -- Store the original host (this is used for config, etc.) |
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76 session.user = attr.to; |
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77 -- Set the host for future reference |
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78 session.host = config.get(attr.to, "core", "component_address") or attr.to; |
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79 -- Note that we don't create the internal component |
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80 -- until after the external component auths successfully |
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81 |
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82 session.streamid = uuid_gen(); |
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83 session.notopen = nil; |
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84 |
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85 session.send(st.stanza("stream:stream", { xmlns=xmlns_component, |
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86 ["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.host }):top_tag()); |
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87 |
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88 end |
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89 |
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90 function stream_callbacks.streamclosed(session) |
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91 session.log("Received </stream:stream>"); |
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92 session:close(); |
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93 end |
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94 |
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95 local core_process_stanza = core_process_stanza; |
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96 |
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97 function stream_callbacks.handlestanza(session, stanza) |
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98 -- Namespaces are icky. |
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99 if not stanza.attr.xmlns and stanza.name == "handshake" then |
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100 stanza.attr.xmlns = xmlns_component; |
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101 end |
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102 return core_process_stanza(session, stanza); |
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103 end |
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104 |
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105 --- Closing a component connection |
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106 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'}; |
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107 local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" }; |
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108 local function session_close(session, reason) |
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109 if session.destroyed then return; end |
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110 local log = session.log or log; |
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111 if session.conn then |
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112 if session.notopen then |
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113 session.send("<?xml version='1.0'?>"); |
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114 session.send(st.stanza("stream:stream", default_stream_attr):top_tag()); |
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115 end |
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116 if reason then |
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117 if type(reason) == "string" then -- assume stream error |
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118 log("info", "Disconnecting component, <stream:error> is: %s", reason); |
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119 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' })); |
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120 elseif type(reason) == "table" then |
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121 if reason.condition then |
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122 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up(); |
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123 if reason.text then |
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124 stanza:tag("text", stream_xmlns_attr):text(reason.text):up(); |
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125 end |
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126 if reason.extra then |
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127 stanza:add_child(reason.extra); |
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128 end |
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129 log("info", "Disconnecting component, <stream:error> is: %s", tostring(stanza)); |
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130 session.send(stanza); |
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131 elseif reason.name then -- a stanza |
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132 log("info", "Disconnecting component, <stream:error> is: %s", tostring(reason)); |
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133 session.send(reason); |
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134 end |
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135 end |
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136 end |
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137 session.send("</stream:stream>"); |
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138 session.conn:close(); |
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139 component_listener.ondisconnect(session.conn, "stream error"); |
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140 end |
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141 end |
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142 |
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143 --- Component connlistener |
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144 function component_listener.onincoming(conn, data) |
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145 local session = sessions[conn]; |
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146 if not session then |
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147 local _send = conn.write; |
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148 session = { type = "component", conn = conn, send = function (data) return _send(conn, tostring(data)); end }; |
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149 sessions[conn] = session; |
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150 |
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151 -- Logging functions -- |
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152 |
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153 local conn_name = "jcp"..tostring(conn):match("[a-f0-9]+$"); |
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154 session.log = logger.init(conn_name); |
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155 session.close = session_close; |
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156 |
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157 session.log("info", "Incoming Jabber component connection"); |
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158 |
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159 local parser = lxp.new(init_xmlhandlers(session, stream_callbacks), "\1"); |
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160 session.parser = parser; |
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161 |
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162 session.notopen = true; |
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163 |
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164 function session.data(conn, data) |
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165 local ok, err = parser:parse(data); |
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166 if ok then return; end |
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167 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_")); |
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168 session:close("xml-not-well-formed"); |
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169 end |
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170 |
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171 session.dispatch_stanza = stream_callbacks.handlestanza; |
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172 |
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173 end |
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174 if data then |
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175 session.data(conn, data); |
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176 end |
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177 end |
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178 |
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179 function component_listener.ondisconnect(conn, err) |
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180 local session = sessions[conn]; |
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181 if session then |
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182 (session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err)); |
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183 if session.host then |
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184 log("debug", "Deregistering component"); |
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185 cm_deregister_component(session.host); |
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186 hosts[session.host].connected = nil; |
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187 end |
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188 sessions[conn] = nil; |
|
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189 for k in pairs(session) do |
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190 if k ~= "log" and k ~= "close" then |
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191 session[k] = nil; |
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192 end |
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193 end |
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194 session.destroyed = true; |
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195 session = nil; |
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196 end |
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197 end |
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198 |
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199 connlisteners.register('xmppcomponent', component_listener); |
