Mercurial > prosody-modules

annotate mod_proxy65/mod_proxy65.lua @ 65:a35eb0764ac6

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mod_proxy65: tcp connection of initiator and target are established
author Thilo Cestonaro <thilo@cestona.ro>
date Wed, 28 Oct 2009 00:03:28 +0100
parents 853c3c7e9936
children b86ae5e21a56
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
64
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1 -- Copyright (C) 2009 Thilo Cestonaro
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2 --
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3 -- This project is MIT/X11 licensed. Please see the
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4 -- COPYING file in the source package for more information.
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5 --
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6
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7 if module:get_host_type() ~= "component" then
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8 error("proxy65 should be loaded as a component, please see http://prosody.im/doc/components", 0);
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9 end
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10
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11
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12 local jid_split = require "util.jid".split;
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13 local st = require "util.stanza";
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14 local component_register = require "core.componentmanager".register_component;
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15 local component_deregister = require "core.componentmanager".deregister_component;
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16 local configmanager = require "core.configmanager";
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17 local config_get = require "core.configmanager".get;
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18 local connlisteners_register = require "net.connlisteners".register;
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19 local connlisteners_start = require "net.connlisteners".start;
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20 local connlisteners_deregister = require "net.connlisteners".deregister;
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21 local adns, dns = require "net.adns", require "net.dns";
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22 local add_task = require "util.timer".add_task;
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23 local max_dns_depth = config.get("*", "core", "dns_max_depth") or 3;
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24 local dns_timeout = config.get("*", "core", "dns_timeout") or 60;
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25 local serialize = require "util.serialization".serialize;
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26 local sha1 = require "util.hashes".sha1;
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27
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28 local replies_cache = {};
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29 local _host = module:get_host();
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30 local _name = "SOCKS5 Bytestreams Service";
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31 local connlistener = {registered=false};
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32 local _config = {};
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33 local sessions = {};
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34 local transfers = {};
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35 local component;
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36
65
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37 _config.port = config_get(_host, "core", "port");
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38 _config.interface = config_get(_host, "core", "interface");
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39
64
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40 if _config.port == nil then
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41 _config.port = 5000;
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42 end
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43
65
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44 local function bin2hex(bin)
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45 return bin:gsub(".", function (c) return ("%02x"):format(c:byte()); end)
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46 end
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47
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48 function new_session(conn)
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49 local w = function(s) conn.write(s:gsub("\n", "\r\n")); end;
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50 local session = { conn = conn;
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51 send = function (t) w(tostring(t)); end;
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52 print = function (t) w("| "..tostring(t).."\n"); end;
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53 disconnect = function () conn.close(); end;
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54 };
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55
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56 return session;
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57 end
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58
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59 function connlistener.listener(conn, data)
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60 module:log("debug", "listener called....")
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61 local session = sessions[conn];
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62
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63 if data ~= nil then module:log("debug", bin2hex(data)); end
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64 if not session and data ~= nil and data:byte() == string.char(5):byte() and data:len() > 2 then
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65 local nmethods = data:sub(2):byte();
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66 local methods = data:sub(3);
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67 local supported = false;
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68 for i=1, nmethods, 1 do
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69 if(methods:sub(i):byte() == string.char(0):byte()) then
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70 supported = true;
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71 break;
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72 end
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73 end
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74 if(supported) then
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75 module:log("debug", "new session found ... ")
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76 session = new_session(conn);
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77 sessions[conn] = session;
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78 session.send(string.char(5, 0));
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79 end
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80 elseif data ~= nil and data:len() > 6 and
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81 data:sub(1):byte() == string.char(5):byte() and -- SOCKS5 has 5 in first byte
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82 data:sub(2):byte() == string.char(1):byte() and -- CMD must be 1
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83 data:sub(3):byte() == string.char(0):byte() and -- RSV must be 0
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84 data:sub(4):byte() == string.char(3):byte() and -- ATYP must be 3
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85 data:sub(-2):byte() == string.char(0):byte() and data:sub(-1):byte() == string.char(0):byte() -- PORT must be 0, size 2 byte
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86 then
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87 local sha = data:sub(6, data:len() - 2);
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88 module:log("debug", "gotten sha: >%s<", sha);
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89 if transfers[sha] == nil then
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90 transfers[sha] = {};
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91 transfers[sha].target = conn;
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92 module:log("debug", "target connected ... ");
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93 elseif transfers[sha].target ~= nil then
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94 transfers[sha].initiator = conn;
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95 module:log("debug", "initiator connected ... ");
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96 end
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97 session.send(string.char(5, 0, 0, 3, 40) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
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98 end
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99 end
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100
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101 function connlistener.disconnect(conn, err)
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102
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103 end
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104
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105 local function get_disco_info(stanza)
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106 local reply = replies_cache.disco_info;
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107 if reply == nil then
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108 reply = st.iq({type='result', from=_host}):query("http://jabber.org/protocol/disco#info")
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109 :tag("identity", {category='proxy', type='bytestreams', name=_name}):up()
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110 :tag("feature", {var="http://jabber.org/protocol/bytestreams"});
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111 replies_cache.disco_info = reply;
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112 end
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113
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114 reply.attr.id = stanza.attr.id;
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115 reply.attr.to = stanza.attr.from;
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116 return reply;
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117 end
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118
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119 local function get_disco_items(stanza)
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120 local reply = replies_cache.disco_items;
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121 if reply == nil then
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122 reply = st.iq({type='result', from=_host}):query("http://jabber.org/protocol/disco#items");
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123 replies_cache.disco_info = reply;
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124 end
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125
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126 reply.attr.id = stanza.attr.id;
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127 reply.attr.to = stanza.attr.from;
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diff changeset
128 return reply;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
129 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
130
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
131 local function get_stream_host(stanza)
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
132 local reply = replies_cache.stream_host;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
133 local sid = stanza.tags[1].attr.sid;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
134 if reply == nil then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
135 reply = st.iq({type="result", from=_host})
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
136 :query("http://jabber.org/protocol/bytestreams")
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
137 :tag("streamhost", {jid=_host, host=_config.interface, port=_config.port}); -- TODO get the correct data
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
138 replies_cache.stream_host = reply;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
139 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
140
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
141 reply.attr.id = stanza.attr.id;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
142 reply.attr.to = stanza.attr.from;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
143 reply.tags[1].attr.sid = sid;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
144 return reply;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
145 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
146
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
147 module.unload = function()
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
148 component_deregister(_host);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
149 connlisteners_deregister("proxy65");
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
150 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
151
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
152 local function set_activation(stanza)
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
153 local from = nil;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
154 local to = nil;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
155 local sid = nil;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
156 local reply = nil;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
157 if stanza.attr ~= nil then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
158 from = stanza.attr.from;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
159 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
160 if stanza.tags[1] ~= nil and tostring(stanza.tags[1].name) == "query" then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
161 if stanza.tags[1].attr ~= nil then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
162 sid = stanza.tags[1].attr.sid;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
163 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
164 if stanza.tags[1].tags[1] ~= nil and tostring(stanza.tags[1].tags[1].name) == "activate" then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
165 to = stanza.tags[1].tags[1][1];
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
166 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
167 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
168 if from ~= nil and to ~= nil and sid ~= nil then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
169 reply = st.iq({type="result", from=_host});
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
170 reply.attr.id = stanza.attr.id;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
171 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
172 return reply, from, to, sid;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
173 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
174
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
175 local function forward(initiator, target)
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
176 module:log("debug", "forward it ....");
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
177 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
178
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
179
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
180 local function register()
65
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
181 connlistener.default_port = _config.port;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
182 connlistener.default_interface = "*";
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
183 connlistener.default_mode = "*a";
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
184 connlistener.registered = connlisteners_register('proxy65', connlistener);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
185 if(connlistener.registered == false) then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
186 error("Proxy65: Could not establish a connection listener. Check your configuration please.");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
187 else
65
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
188 connlistener.handler = connlisteners_start('proxy65');
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
189 module:log("debug", "Connection listener registered ... ")
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
190 module:add_item("proxy65", {jid=_host, name=_name})
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
191 component = component_register(_host, function(origin, stanza)
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
192 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
193 if to_node == nil then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
194 local type = stanza.attr.type;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
195 if type == "error" or type == "result" then return; end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
196 if stanza.name == "iq" and type == "get" then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
197 local xmlns = stanza.tags[1].attr.xmlns
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
198 if xmlns == "http://jabber.org/protocol/disco#info" then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
199 origin.send(get_disco_info(stanza));
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
200 return true;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
201 elseif xmlns == "http://jabber.org/protocol/disco#items" then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
202 origin.send(get_disco_items(stanza));
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
203 return true;
65
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
204 elseif xmlns == "http://jabber.org/protocol/bytestreams" then
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
205 origin.send(get_stream_host(stanza));
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
206 return true;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
207 end
65
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
208 elseif stanza.name == "iq" and type == "set" then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
209 local reply, from, to, sid = set_activation(stanza);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
210 if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
211 module:log("debug", "need to build sha1 of data: from: %s, to: %s, sid: %s", from, to, sid);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
212 local sha = sha1(sid .. from .. to, true);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
213 module:log("debug", "generated sha: %s", sha);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
214 if(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
215 origin.send(reply);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
216 forward(transfers[sha].initiator, transfers[sha].target);
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
217 transfers[sha] = nil;
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
218 end
a35eb0764ac6 mod_proxy65: tcp connection of initiator and target are established
Thilo Cestonaro <thilo@cestona.ro>
parents: 64
diff changeset
219 end
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
220 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
221 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
222 return;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
223 end);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
224 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
225 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
226
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
227 local function getDefaultIP(host)
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
228 local handle;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
229 handle = adns.lookup(function (reply)
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
230 handle = nil;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
231
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
232 -- COMPAT: This is a compromise for all you CNAME-(ab)users :)
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
233 if not (reply and reply[#reply] and reply[#reply].a) then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
234 local count = max_dns_depth;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
235 reply = dns.peek(host, "CNAME", "IN");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
236 while count > 0 and reply and reply[#reply] and not reply[#reply].a and reply[#reply].cname do
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
237 module:log("debug", "Looking up %s (DNS depth is %d)", tostring(reply[#reply].cname), count);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
238 reply = dns.peek(reply[#reply].cname, "A", "IN") or dns.peek(reply[#reply].cname, "CNAME", "IN");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
239 count = count - 1;
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
240 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
241 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
242 -- end of CNAME resolving
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
243
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
244 if reply and reply[#reply] and reply[#reply].a then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
245 module:log("debug", "DNS reply for %s gives us %s", host, reply[#reply].a);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
246 _config.interface = reply[#reply].a
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
247 return register();
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
248 else
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
249 module:log("debug", "DNS lookup failed to get a response for %s", host);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
250 if host:find(".") ~= nil then
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
251 host = host:gsub("^[^%.]*%.", "");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
252 if host:find(".") ~= nil then -- still one dot left?
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
253 return getDefaultIP(host);
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
254 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
255 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
256 error("Proxy65: Could not get an interface to bind to. Please configure one.");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
257 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
258 end, host, "A", "IN");
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
259
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
260 -- Set handler for DNS timeout
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
261 add_task(dns_timeout, function ()
853c3c7e9936 mod_proxy65: remove the proxy65 folder
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262 if handle then
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263 adns.cancel(handle, true);
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264 end
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265 end);
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266 return true;
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267 end
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268
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269 if _config.interface ~= nil then
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270 register();
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271 else
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272 getDefaultIP(_host); -- try to DNS lookup module:host()
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273 end