prosody-modules
2bf6c7c590a1
mod_proxy65/mod_proxy65.lua

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mod_proxy65/mod_proxy65.lua @ 72:2bf6c7c590a1

mod_proxy65: component register and deregister are with "_component" appended
author Thilo Cestonaro <thilo@cestona.ro>
date Sat, 31 Oct 2009 20:33:42 +0100
parent 70:d3afb1403aa7
child 73:adb9d1b879c2
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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 componentmanager = require "core.componentmanager";
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15 local config_get = require "core.configmanager".get;
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16 local connlisteners = require "net.connlisteners";
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17 local adns, dns = require "net.adns", require "net.dns";
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18 local add_task = require "util.timer".add_task;
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19 local max_dns_depth = config.get("*", "core", "dns_max_depth") or 3;
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20 local dns_timeout = config.get("*", "core", "dns_timeout") or 60;
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21 local sha1 = require "util.hashes".sha1;
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22
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23 local host, name = module:get_host(), "SOCKS5 Bytestreams Service";
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24 local sessions, transfers, component, replies_cache = {}, {}, nil, {};
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25
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26 local proxy_port = config_get(host, "core", "proxy65_port") or 5000;
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27 local proxy_interface = config_get(host, "core", "proxy65_interface") or "*";
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28 local proxy_address = config_get(host, "core", "proxy65_address") or (proxy_interface ~= "*" and proxy_interface) or module.host;
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29
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30 local connlistener = { default_port = proxy_port,
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31 default_interface = proxy_interface,
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32 default_mode = "*a" };
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33
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34 function connlistener.listener(conn, data)
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35 local session = sessions[conn] or {};
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36
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37 if session.setup == false and data ~= nil and data:sub(1):byte() == 0x05 and data:len() > 2 then
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38 local nmethods = data:sub(2):byte();
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39 local methods = data:sub(3);
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40 local supported = false;
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41 for i=1, nmethods, 1 do
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42 if(methods:sub(i):byte() == 0x00) then -- 0x00 == method: NO AUTH
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43 supported = true;
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44 break;
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45 end
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46 end
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47 if(supported) then
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48 module:log("debug", "new session found ... ")
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49 session.setup = true;
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50 sessions[conn] = session;
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51 conn.write(string.char(5, 0));
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52 end
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53 return;
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54 end
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55 if session.setup then
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56 if session.sha ~= nil and transfers[session.sha] ~= nil then
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57 local sha = session.sha;
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58 if transfers[sha].activated == true and transfers[sha].initiator == conn and transfers[sha].target ~= nil then
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59 transfers[sha].target.write(data);
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60 return;
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61 end
65
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62 end
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63 if data ~= nil and data:len() == 0x2F and -- 40 == length of SHA1 HASH, and 7 other bytes => 47 => 0x2F
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64 data:sub(1):byte() == 0x05 and -- SOCKS5 has 5 in first byte
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65 data:sub(2):byte() == 0x01 and -- CMD must be 1
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66 data:sub(3):byte() == 0x00 and -- RSV must be 0
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67 data:sub(4):byte() == 0x03 and -- ATYP must be 3
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68 data:sub(5):byte() == 40 and -- SHA1 HASH length must be 64 (0x40)
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69 data:sub(-2):byte() == 0x00 and -- PORT must be 0, size 2 byte
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70 data:sub(-1):byte() == 0x00
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71 then
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72 local sha = data:sub(6, 45); -- second param is not count! it's the ending index (included!)
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73 if transfers[sha] == nil then
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74 transfers[sha] = {};
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75 transfers[sha].activated = false;
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76 transfers[sha].target = conn;
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77 session.sha = sha;
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78 module:log("debug", "target connected ... ");
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79 elseif transfers[sha].target ~= nil then
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80 transfers[sha].initiator = conn;
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81 session.sha = sha;
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82 module:log("debug", "initiator connected ... ");
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83 end
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84 conn.write(string.char(5, 0, 0, 3, sha:len()) .. sha .. string.char(0, 0)); -- VER, REP, RSV, ATYP, BND.ADDR (sha), BND.PORT (2 Byte)
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85 end
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86 end
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87 end
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88
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89 function connlistener.disconnect(conn, err)
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90 if sessions[conn] then
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91 -- Clean up any session-related stuff here
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92 sessions[conn] = nil;
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93 end
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94 end
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95
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96 local function get_disco_info(stanza)
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97 local reply = replies_cache.disco_info;
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98 if reply == nil then
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99 reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#info")
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100 :tag("identity", {category='proxy', type='bytestreams', name=name}):up()
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101 :tag("feature", {var="http://jabber.org/protocol/bytestreams"});
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102 replies_cache.disco_info = reply;
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103 end
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104
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105 reply.attr.id = stanza.attr.id;
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106 reply.attr.to = stanza.attr.from;
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107 return reply;
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108 end
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109
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110 local function get_disco_items(stanza)
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111 local reply = replies_cache.disco_items;
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112 if reply == nil then
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113 reply = st.iq({type='result', from=host}):query("http://jabber.org/protocol/disco#items");
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114 replies_cache.disco_info = reply;
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115 end
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116
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117 reply.attr.id = stanza.attr.id;
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118 reply.attr.to = stanza.attr.from;
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119 return reply;
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120 end
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121
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diff changeset
122 local function get_stream_host(stanza)
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123 local reply = replies_cache.stream_host;
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124 local sid = stanza.tags[1].attr.sid;
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125 if reply == nil then
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126 reply = st.iq({type="result", from=host})
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127 :query("http://jabber.org/protocol/bytestreams")
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128 :tag("streamhost", {jid=host, host=proxy_address, port=proxy_port}); -- TODO get the correct data
65
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129 replies_cache.stream_host = reply;
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130 end
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131
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132 reply.attr.id = stanza.attr.id;
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133 reply.attr.to = stanza.attr.from;
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134 reply.tags[1].attr.sid = sid;
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135 return reply;
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136 end
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137
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138 module.unload = function()
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139 componentmanager.deregister_component(host);
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140 connlisteners.deregister("proxy65");
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141 end
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142
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143 local function set_activation(stanza)
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144 local from, to, sid, reply = nil;
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145 from = stanza.attr.from;
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146 if stanza.tags[1] ~= nil and tostring(stanza.tags[1].name) == "query" then
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147 if stanza.tags[1].attr ~= nil then
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148 sid = stanza.tags[1].attr.sid;
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149 end
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150 if stanza.tags[1].tags[1] ~= nil and tostring(stanza.tags[1].tags[1].name) == "activate" then
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151 to = stanza.tags[1].tags[1][1];
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152 end
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153 end
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154 if from ~= nil and to ~= nil and sid ~= nil then
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155 reply = st.iq({type="result", from=host});
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156 reply.attr.id = stanza.attr.id;
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157 end
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158 return reply, from, to, sid;
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159 end
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160
68
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diff changeset
161 function handle_to_domain(origin, stanza)
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162 local to_node, to_host, to_resource = jid_split(stanza.attr.to);
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163 if to_node == nil then
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164 local type = stanza.attr.type;
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165 if type == "error" or type == "result" then return; end
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diff changeset
166 if stanza.name == "iq" and type == "get" then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
167 local xmlns = stanza.tags[1].attr.xmlns
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diff changeset
168 if xmlns == "http://jabber.org/protocol/disco#info" then
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parents: 66
diff changeset
169 origin.send(get_disco_info(stanza));
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170 return true;
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diff changeset
171 elseif xmlns == "http://jabber.org/protocol/disco#items" then
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parents: 66
diff changeset
172 origin.send(get_disco_items(stanza));
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173 return true;
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
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174 elseif xmlns == "http://jabber.org/protocol/bytestreams" then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
175 origin.send(get_stream_host(stanza));
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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176 return true;
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
177 end
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parents: 66
diff changeset
178 elseif stanza.name == "iq" and type == "set" then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
179 local reply, from, to, sid = set_activation(stanza);
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
180 if reply ~= nil and from ~= nil and to ~= nil and sid ~= nil then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
181 local sha = sha1(sid .. from .. to, true);
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
182 if transfers[sha] == nil then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
183 module:log("error", "transfers[sha]: nil");
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
184 elseif(transfers[sha] ~= nil and transfers[sha].initiator ~= nil and transfers[sha].target ~= nil) then
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
185 origin.send(reply);
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
186 transfers[sha].activated = true;
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
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parents:
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187 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
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parents:
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188 end
68
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
189 end
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
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parents:
diff changeset
190 end
68
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
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parents: 66
diff changeset
191 return;
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
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parents:
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192 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
193
70
d3afb1403aa7 mod_proxy65: Remove unused bin2hex function, and compact more code. Finally down <200 lines :)
Matthew Wild <mwild1@gmail.com>
parents: 69
diff changeset
194 if not connlisteners.register('proxy65', connlistener) then
68
0df3e4d1f1a3 mod_proxy65: Reviewed and re-factored the code, added proxy_address to specify the address which the proxy advertises for clients to connect to
Matthew Wild <mwild1@gmail.com>
parents: 66
diff changeset
195 error("mod_proxy65: Could not establish a connection listener. Check your configuration please.");
64
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
196 end
853c3c7e9936 mod_proxy65: remove the proxy65 folder
Thilo Cestonaro <thilo@cestona.ro>
parents:
diff changeset
197
70
d3afb1403aa7 mod_proxy65: Remove unused bin2hex function, and compact more code. Finally down <200 lines :)
Matthew Wild <mwild1@gmail.com>
parents: 69
diff changeset
198 connlisteners.start('proxy65');
72
2bf6c7c590a1 mod_proxy65: component register and deregister are with "_component" appended
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parents: 70
diff changeset
199 component = componentmanager.register_component(host, handle_to_domain);