verse
9c5362d393f0
plugins/jingle_s5b.lua

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plugins/jingle_s5b.lua @ 101:9c5362d393f0

verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
author Matthew Wild <mwild1@gmail.com>
date Sat, 21 Aug 2010 15:28:08 +0100
child 140:97bf22d6ff96
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
101
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1
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2 local xmlns_s5b = "urn:xmpp:jingle:transports:s5b:1";
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3 local sha1 = require "util.sha1".sha1;
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4 local uuid_generate = require "util.uuid".generate;
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5
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6 local function negotiate_socks5(conn, hash)
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7 local function suppress_connected()
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8 conn:unhook("connected", suppress_connected);
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9 return true;
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10 end
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11 local function receive_connection_response(data)
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12 conn:unhook("incoming-raw", receive_connection_response);
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13
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14 if data:sub(1, 2) ~= "\005\000" then
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15 return conn:event("error", "connection-failure");
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16 end
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17 conn:event("connected");
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18 return true;
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19 end
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20 local function receive_auth_response(data)
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21 conn:unhook("incoming-raw", receive_auth_response);
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22 if data ~= "\005\000" then -- SOCKSv5; "NO AUTHENTICATION"
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23 -- Server is not SOCKSv5, or does not allow no auth
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24 local err = "version-mismatch";
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25 if data:sub(1,1) == "\005" then
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26 err = "authentication-failure";
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27 end
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28 return conn:event("error", err);
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29 end
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30 -- Request SOCKS5 connection
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31 conn:send(string.char(0x05, 0x01, 0x00, 0x03, #hash)..hash.."\0\0"); --FIXME: Move to "connected"?
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32 conn:hook("incoming-raw", receive_connection_response, 100);
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33 return true;
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34 end
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35 conn:hook("connected", suppress_connected, 200);
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36 conn:hook("incoming-raw", receive_auth_response, 100);
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37 conn:send("\005\001\000"); -- SOCKSv5; 1 mechanism; "NO AUTHENTICATION"
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38 end
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39
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40 local function connect_to_usable_streamhost(callback, streamhosts, auth_token)
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41 local conn = verse.new(nil, {
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42 streamhosts = streamhosts,
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43 current_host = 0;
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44 });
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45 --Attempt to connect to the next host
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46 local function attempt_next_streamhost(event)
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47 if event then
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48 return callback(nil, event.reason);
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49 end
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50 -- First connect, or the last connect failed
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51 if conn.current_host < #conn.streamhosts then
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52 conn.current_host = conn.current_host + 1;
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53 conn:debug("Attempting to connect to "..conn.streamhosts[conn.current_host].host..":"..conn.streamhosts[conn.current_host].port.."...");
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54 local ok, err = conn:connect(
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55 conn.streamhosts[conn.current_host].host,
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56 conn.streamhosts[conn.current_host].port
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57 );
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58 if not ok then
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59 conn:debug("Error connecting to proxy (%s:%s): %s",
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60 conn.streamhosts[conn.current_host].host,
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61 conn.streamhosts[conn.current_host].port,
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62 err
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63 );
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64 else
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65 conn:debug("Connecting...");
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66 end
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67 negotiate_socks5(conn, auth_token);
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68 return true; -- Halt processing of disconnected event
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69 end
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70 -- All streamhosts tried, none successful
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71 conn:unhook("disconnected", attempt_next_streamhost);
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72 return callback(nil);
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73 -- Let disconnected event fall through to user handlers...
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74 end
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75 conn:hook("disconnected", attempt_next_streamhost, 100);
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76 -- When this event fires, we're connected to a streamhost
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77 conn:hook("connected", function ()
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78 conn:unhook("disconnected", attempt_next_streamhost);
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79 callback(conn.streamhosts[conn.current_host], conn);
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80 end, 100);
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81 attempt_next_streamhost(); -- Set it in motion
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82 return conn;
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83 end
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84
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85 function verse.plugins.jingle_s5b(stream)
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86 stream:hook("ready", function ()
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87 stream:add_disco_feature(xmlns_s5b);
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88 end, 10);
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89
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90 local s5b = {};
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91
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92 function s5b:generate_initiate()
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93 self.s5b_sid = uuid_generate();
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94 local transport = verse.stanza("transport", { xmlns = xmlns_s5b,
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95 mode = "tcp", sid = self.s5b_sid });
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96 local p = 0;
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97 for jid, streamhost in pairs(stream.proxy65.available_streamhosts) do
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98 p = p + 1;
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99 transport:tag("candidate", { jid = jid, host = streamhost.host,
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100 port = streamhost.port, cid=jid, priority = p, type = "proxy" }):up();
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101 end
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102 stream:debug("Have %d proxies", p)
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103 return transport;
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104 end
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105
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106 function s5b:generate_accept(initiate_transport)
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107 local candidates = {};
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108 self.s5b_peer_candidates = candidates;
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109 self.s5b_mode = initiate_transport.attr.mode or "tcp";
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110 self.s5b_sid = initiate_transport.attr.sid or self.jingle.sid;
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111
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112 -- Import the list of candidates the initiator offered us
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113 for candidate in initiate_transport:childtags() do
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114 --if candidate.attr.jid == "asterix4@jabber.lagaule.org/Gajim"
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115 --and candidate.attr.host == "82.246.25.239" then
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116 candidates[candidate.attr.cid] = {
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117 type = candidate.attr.type;
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118 jid = candidate.attr.jid;
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119 host = candidate.attr.host;
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120 port = tonumber(candidate.attr.port) or 0;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
121 priority = tonumber(candidate.attr.priority) or 0;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
122 cid = candidate.attr.cid;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
123 };
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
124 --end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
125 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
126
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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127 -- Import our own candidates
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
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128 -- TODO ^
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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129 local transport = verse.stanza("transport", { xmlns = xmlns_s5b });
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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130 return transport;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
131 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
132
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
133 function s5b:connect(callback)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
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134 stream:warn("Connecting!");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
135
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
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136 local streamhost_array = {};
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
137 for cid, streamhost in pairs(self.s5b_peer_candidates or {}) do
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
138 streamhost_array[#streamhost_array+1] = streamhost;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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139 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
140
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
141 if #streamhost_array > 0 then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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142 self.connecting_peer_candidates = true;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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143 local function onconnect(streamhost, conn)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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144 self.jingle:send_command("transport-info", verse.stanza("transport", { xmlns = xmlns_s5b, sid = self.s5b_sid })
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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145 :tag("candidate-used", { cid = streamhost.cid }));
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
146 self.onconnect_callback = callback;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
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147 self.conn = conn;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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148 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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149 local auth_token = sha1(self.s5b_sid..self.peer..stream.jid, true);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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150 connect_to_usable_streamhost(onconnect, streamhost_array, auth_token);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
151 else
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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152 stream:warn("Actually, I'm going to wait for my peer to tell me its streamhost...");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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153 self.onconnect_callback = callback;
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parents:
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154 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
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155 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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156
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
157 function s5b:info_received(jingle_tag)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
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158 stream:warn("Info received");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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159 local transport_tag = jingle_tag:child_with_name("content"):child_with_name("transport");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 if transport_tag:get_child("candidate-used") and not self.connecting_peer_candidates then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161 local candidate_used = transport_tag:child_with_name("candidate-used");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
162 if candidate_used then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
163 -- Connect straight away to candidate used, we weren't trying any anyway
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
164 local function onconnect(streamhost, conn)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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165 if self.jingle.role == "initiator" then -- More correct would be - "is this a candidate we offered?"
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
166 -- Activate the stream
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
167 self.jingle.stream:send_iq(verse.iq({ to = streamhost.jid, type = "set" })
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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168 :tag("query", { xmlns = xmlns_bytestreams, sid = self.s5b_sid })
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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169 :tag("activate"):text(self.jingle.peer), function (result)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
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170
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
171 if result.attr.type == "result" then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
172 self.jingle:send_command("transport-info", verse.stanza("transport", { xmlns = xmlns_s5b, sid = self.s5b_sid })
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
173 :tag("activated", { cid = candidate_used.attr.cid }));
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
174 self.conn = conn;
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
175 self.onconnect_callback(conn);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176 else
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
177 self.jingle.stream:error("Failed to activate bytestream");
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
178 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
179 end);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
180 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
181 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
183 -- FIXME: Another assumption that cid==jid, and that it was our candidate
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
184 self.jingle.stream:debug("CID: %s", self.jingle.stream.proxy65.available_streamhosts[candidate_used.attr.cid]);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 local streamhost_array = {
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186 self.jingle.stream.proxy65.available_streamhosts[candidate_used.attr.cid];
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187 };
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
189 local auth_token = sha1(self.s5b_sid..stream.jid..self.peer, true);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
190 connect_to_usable_streamhost(onconnect, streamhost_array, auth_token);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
191 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
192 elseif transport_tag:get_child("activated") then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
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parents:
diff changeset
193 self.onconnect_callback(self.conn);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
194 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
195 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
196
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197 function s5b:disconnect()
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
198 if self.conn then
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
199 self.conn:close();
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
200 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
201 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
202
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
203 function s5b:handle_accepted(jingle_tag)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 end
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
205
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 local s5b_mt = { __index = s5b };
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 stream:hook("jingle/transport/"..xmlns_s5b, function (jingle)
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 return setmetatable({
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209 role = jingle.role,
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210 peer = jingle.peer,
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 stream = jingle.stream,
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 jingle = jingle,
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 }, s5b_mt);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 end);
9c5362d393f0 verse.plugins.jingle_s5b: Jingle SOCKS5 Bytestreams transport
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 end