prosody
122f142da281
net/xmppcomponent_listener.lua

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net/xmppcomponent_listener.lua @ 4291:122f142da281

mod_adhoc: Add support for commands only executable by global administrators
author Florian Zeitz <florob@babelmonkeys.de>
date Thu, 02 Jun 2011 21:56:24 +0200
parent 3752:c34a58c3ea43
child 4463:df2cbc52c83b
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rev   line source
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 --
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5 -- This project is MIT/X11 licensed. Please see the
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6 -- COPYING file in the source package for more information.
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7 --
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8
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9
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10 local hosts = _G.hosts;
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11
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12 local t_concat = table.concat;
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13 local tostring = tostring;
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14 local type = type;
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15 local pairs = pairs;
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16
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17 local lxp = require "lxp";
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18 local logger = require "util.logger";
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19 local config = require "core.configmanager";
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20 local connlisteners = require "net.connlisteners";
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21 local uuid_gen = require "util.uuid".generate;
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22 local jid_split = require "util.jid".split;
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23 local sha1 = require "util.hashes".sha1;
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24 local st = require "util.stanza";
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25 local new_xmpp_stream = require "util.xmppstream".new;
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26
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27 local sessions = {};
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28
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29 local log = logger.init("componentlistener");
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30
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31 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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32
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33 local xmlns_component = 'jabber:component:accept';
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34
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35 --- Callbacks/data for xmppstream to handle streams for us ---
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36
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37 local stream_callbacks = { default_ns = xmlns_component };
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38
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39 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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40
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41 function stream_callbacks.error(session, error, data, data2)
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42 if session.destroyed then return; end
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43 log("warn", "Error processing component stream: "..tostring(error));
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44 if error == "no-stream" then
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45 session:close("invalid-namespace");
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46 elseif error == "parse-error" then
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47 session.log("warn", "External component %s XML parse error: %s", tostring(session.host), tostring(data));
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48 session:close("not-well-formed");
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49 elseif error == "stream-error" then
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50 local condition, text = "undefined-condition";
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51 for child in data:children() do
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52 if child.attr.xmlns == xmlns_xmpp_streams then
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53 if child.name ~= "text" then
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54 condition = child.name;
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55 else
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56 text = child:get_text();
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57 end
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58 if condition ~= "undefined-condition" and text then
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59 break;
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60 end
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61 end
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62 end
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63 text = condition .. (text and (" ("..text..")") or "");
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64 session.log("info", "Session closed by remote with error: %s", text);
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65 session:close(nil, text);
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66 end
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67 end
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68
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69 function stream_callbacks.streamopened(session, attr)
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70 if config.get(attr.to, "core", "component_module") ~= "component" then
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71 -- Trying to act as a component domain which
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72 -- hasn't been configured
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73 session:close{ condition = "host-unknown", text = tostring(attr.to).." does not match any configured external components" };
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74 return;
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75 end
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76
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77 -- Note that we don't create the internal component
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78 -- until after the external component auths successfully
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79
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80 session.host = attr.to;
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81 session.streamid = uuid_gen();
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82 session.notopen = nil;
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83
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84 session.send(st.stanza("stream:stream", { xmlns=xmlns_component,
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85 ["xmlns:stream"]='http://etherx.jabber.org/streams', id=session.streamid, from=session.host }):top_tag());
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86
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87 end
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88
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89 function stream_callbacks.streamclosed(session)
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90 session.log("debug", "Received </stream:stream>");
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91 session:close();
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92 end
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93
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94 local core_process_stanza = core_process_stanza;
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95
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96 function stream_callbacks.handlestanza(session, stanza)
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97 -- Namespaces are icky.
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98 if not stanza.attr.xmlns and stanza.name == "handshake" then
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99 stanza.attr.xmlns = xmlns_component;
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100 end
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101 if not stanza.attr.xmlns or stanza.attr.xmlns == "jabber:client" then
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102 local from = stanza.attr.from;
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103 if from then
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104 if session.component_validate_from then
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105 local _, domain = jid_split(stanza.attr.from);
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106 if domain ~= session.host then
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107 -- Return error
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108 session.log("warn", "Component sent stanza with missing or invalid 'from' address");
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109 session:close{
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110 condition = "invalid-from";
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111 text = "Component tried to send from address <"..tostring(from)
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112 .."> which is not in domain <"..tostring(session.host)..">";
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113 };
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114 return;
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115 end
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116 end
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117 else
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118 stanza.attr.from = session.host;
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119 end
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120 if not stanza.attr.to then
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121 session.log("warn", "Rejecting stanza with no 'to' address");
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diff changeset
122 session.send(st.error_reply(stanza, "modify", "bad-request", "Components MUST specify a 'to' address on stanzas"));
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parents: 3315
diff changeset
123 return;
6122a6270773 xmppcomponent_listener: Don't validate to/from on non-stanzas, fixes component auth.
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parents: 3315
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124 end
3315
f4d2de6ac22e xmppcomponent_listener: Validate to/from on components, fixes #104 and #162
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parents: 2925
diff changeset
125 end
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126 return core_process_stanza(session, stanza);
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127 end
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128
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129 --- Closing a component connection
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130 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
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131 local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
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132 local function session_close(session, reason)
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c13816e0c546 net.xmppcomponent_listener: Don't allow closing a session that has already been destroyed
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133 if session.destroyed then return; end
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134 local log = session.log or log;
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135 if session.conn then
1617
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Matthew Wild <mwild1@gmail.com>
parents: 1523
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136 if session.notopen then
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
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parents: 1523
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137 session.send("<?xml version='1.0'?>");
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parents: 1523
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138 session.send(st.stanza("stream:stream", default_stream_attr):top_tag());
c6e175a0d83b xmpp{client,server,component]_listener: Open stream if sending an error and it isn't already open. Fixes #120
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parents: 1523
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139 end
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140 if reason then
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141 if type(reason) == "string" then -- assume stream error
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142 log("info", "Disconnecting component, <stream:error> is: %s", reason);
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143 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
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144 elseif type(reason) == "table" then
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145 if reason.condition then
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146 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
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147 if reason.text then
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148 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
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149 end
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150 if reason.extra then
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151 stanza:add_child(reason.extra);
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152 end
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153 log("info", "Disconnecting component, <stream:error> is: %s", tostring(stanza));
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154 session.send(stanza);
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155 elseif reason.name then -- a stanza
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156 log("info", "Disconnecting component, <stream:error> is: %s", tostring(reason));
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157 session.send(reason);
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158 end
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159 end
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160 end
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161 session.send("</stream:stream>");
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d8296ab96f55 xmppcomponent_listener: Update for new connection API
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parents: 2466
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162 session.conn:close();
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parents: 2077
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163 component_listener.ondisconnect(session.conn, "stream error");
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164 end
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165 end
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166
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167 --- Component connlistener
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168 function component_listener.onconnect(conn)
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169 local _send = conn.write;
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170 local session = { type = "component", conn = conn, send = function (data) return _send(conn, tostring(data)); end };
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171
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172 -- Logging functions --
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173 local conn_name = "jcp"..tostring(conn):match("[a-f0-9]+$");
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174 session.log = logger.init(conn_name);
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175 session.close = session_close;
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176
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177 session.log("info", "Incoming Jabber component connection");
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178
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179 local stream = new_xmpp_stream(session, stream_callbacks);
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180 session.stream = stream;
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181
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182 session.notopen = true;
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183
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184 function session.reset_stream()
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185 session.notopen = true;
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186 session.stream:reset();
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187 end
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188
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189 function session.data(conn, data)
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190 local ok, err = stream:feed(data);
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191 if ok then return; end
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192 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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193 session:close("not-well-formed");
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194 end
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195
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diff changeset
196 session.dispatch_stanza = stream_callbacks.handlestanza;
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197
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diff changeset
198 sessions[conn] = session;
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199 end
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200 function component_listener.onincoming(conn, data)
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201 local session = sessions[conn];
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202 session.data(conn, data);
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203 end
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204 function component_listener.ondisconnect(conn, err)
1106
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205 local session = sessions[conn];
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206 if session then
b51a65066595 prosody, xmppcomponent_listener: Add listener for XEP-0114 component connections
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parents:
diff changeset
207 (session.log or log)("info", "component disconnected: %s (%s)", tostring(session.host), tostring(err));
3578
410d2df8a824 net.xmppcomponent_listener: Call session:on_destroy() on session disconnect.
Waqas Hussain <waqas20@gmail.com>
parents: 3540
diff changeset
208 if session.on_destroy then session:on_destroy(err); end
3582
6a14c57b458a net.xmppcomponent_listener: Removed unnecessary and problematic cleanup code.
Waqas Hussain <waqas20@gmail.com>
parents: 3578
diff changeset
209 sessions[conn] = nil;
2759
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
210 for k in pairs(session) do
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
211 if k ~= "log" and k ~= "close" then
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
212 session[k] = nil;
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
213 end
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
214 end
48e8832e5cab net.xmppcomponent_listener: Don't remove 'log' and 'close' from sessions when destroying, and set destroyed = true
Matthew Wild <mwild1@gmail.com>
parents: 2758
diff changeset
215 session.destroyed = true;
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parents:
diff changeset
216 session = nil;
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217 end
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parents:
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218 end
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219
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parents:
diff changeset
220 connlisteners.register('xmppcomponent', component_listener);