Fri, 18 Mar 2011 21:39:57 +0000
verse.client: Reopen stream in response to 'connected' event
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verse.plugins.jingle: XEP-0166 Jingle plugin
Matthew Wild <mwild1@gmail.com>
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1 | local sha1 = require "util.sha1".sha1; |
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Matthew Wild <mwild1@gmail.com>
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2 | local timer = require "util.timer"; |
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Matthew Wild <mwild1@gmail.com>
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3 | local uuid_generate = require "util.uuid".generate; |
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Matthew Wild <mwild1@gmail.com>
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4 | |
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5 | local xmlns_jingle = "urn:xmpp:jingle:1"; |
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Matthew Wild <mwild1@gmail.com>
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6 | local xmlns_jingle_errors = "urn:xmpp:jingle:errors:1"; |
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7 | |
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8 | local jingle_mt = {}; |
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Matthew Wild <mwild1@gmail.com>
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9 | jingle_mt.__index = jingle_mt; |
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Matthew Wild <mwild1@gmail.com>
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10 | |
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11 | local registered_transports = {}; |
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Matthew Wild <mwild1@gmail.com>
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12 | local registered_content_types = {}; |
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Matthew Wild <mwild1@gmail.com>
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13 | |
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14 | function verse.plugins.jingle(stream) |
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Matthew Wild <mwild1@gmail.com>
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15 | stream:hook("ready", function () |
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verse.plugins.jingle: XEP-0166 Jingle plugin
Matthew Wild <mwild1@gmail.com>
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16 | stream:add_disco_feature(xmlns_jingle); |
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17 | end, 10); |
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Matthew Wild <mwild1@gmail.com>
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18 | |
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19 | function stream:jingle(to) |
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Matthew Wild <mwild1@gmail.com>
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20 | return verse.eventable(setmetatable(base or { |
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Matthew Wild <mwild1@gmail.com>
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21 | role = "initiator"; |
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Matthew Wild <mwild1@gmail.com>
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22 | peer = to; |
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Matthew Wild <mwild1@gmail.com>
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23 | sid = uuid_generate(); |
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24 | stream = stream; |
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25 | }, jingle_mt)); |
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Matthew Wild <mwild1@gmail.com>
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26 | end |
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27 | |
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28 | function stream:register_jingle_transport(transport) |
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29 | -- transport is a function that receives a |
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30 | -- <transport> element, and returns a connection |
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Matthew Wild <mwild1@gmail.com>
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31 | -- We wait for 'connected' on that connection, |
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Matthew Wild <mwild1@gmail.com>
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32 | -- and use :send() and 'incoming-raw'. |
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33 | end |
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34 | |
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35 | function stream:register_jingle_content_type(content) |
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36 | -- Call content() for every 'incoming-raw'? |
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37 | -- I think content() returns the object we return |
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38 | -- on jingle:accept() |
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Matthew Wild <mwild1@gmail.com>
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39 | end |
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40 | |
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41 | local function handle_incoming_jingle(stanza) |
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Matthew Wild <mwild1@gmail.com>
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42 | local jingle_tag = stanza:get_child("jingle", xmlns_jingle); |
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Matthew Wild <mwild1@gmail.com>
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43 | local sid = jingle_tag.attr.sid; |
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Matthew Wild <mwild1@gmail.com>
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44 | local action = jingle_tag.attr.action; |
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Matthew Wild <mwild1@gmail.com>
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45 | local result = stream:event("jingle/"..sid, stanza); |
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46 | if result == true then |
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47 | -- Ack |
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48 | stream:send(verse.reply(stanza)); |
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49 | return true; |
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50 | end |
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51 | -- No existing Jingle object handled this action, our turn... |
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52 | if action ~= "session-initiate" then |
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53 | -- Trying to send a command to a session we don't know |
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54 | local reply = verse.error_reply(stanza, "cancel", "item-not-found") |
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55 | :tag("unknown-session", { xmlns = xmlns_jingle_errors }):up(); |
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56 | stream:send(reply); |
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57 | return; |
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58 | end |
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59 | |
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60 | -- Ok, session-initiate, new session |
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61 | |
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62 | -- Create new Jingle object |
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63 | local sid = jingle_tag.attr.sid; |
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64 | |
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65 | local jingle = verse.eventable{ |
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66 | role = "receiver"; |
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Matthew Wild <mwild1@gmail.com>
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67 | peer = stanza.attr.from; |
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68 | sid = sid; |
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69 | stream = stream; |
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70 | }; |
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71 | |
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72 | setmetatable(jingle, jingle_mt); |
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73 | |
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74 | local content_tag; |
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75 | local content, transport; |
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76 | for tag in jingle_tag:childtags() do |
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77 | if tag.name == "content" and tag.attr.xmlns == xmlns_jingle then |
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78 | local description_tag = tag:child_with_name("description"); |
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79 | local description_xmlns = description_tag.attr.xmlns; |
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80 | if description_xmlns then |
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81 | local desc_handler = stream:event("jingle/content/"..description_xmlns, jingle, description_tag); |
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82 | if desc_handler then |
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83 | content = desc_handler; |
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84 | end |
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85 | end |
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86 | |
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87 | local transport_tag = tag:child_with_name("transport"); |
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88 | local transport_xmlns = transport_tag.attr.xmlns; |
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89 | |
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90 | transport = stream:event("jingle/transport/"..transport_xmlns, jingle, transport_tag); |
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91 | if content and transport then |
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92 | content_tag = tag; |
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93 | break; |
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94 | end |
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95 | end |
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96 | end |
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97 | if not content then |
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98 | -- FIXME: Fail, no content |
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99 | stream:send(verse.error_reply(stanza, "cancel", "feature-not-implemented", "The specified content is not supported")); |
100
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100 | return; |
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101 | end |
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102 | |
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103 | if not transport then |
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104 | -- FIXME: Refuse session, no transport |
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105 | stream:send(verse.error_reply(stanza, "cancel", "feature-not-implemented", "The specified transport is not supported")); |
100
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106 | return; |
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107 | end |
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108 | |
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109 | stream:send(verse.reply(stanza)); |
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110 | |
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111 | jingle.content_tag = content_tag; |
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112 | jingle.creator, jingle.name = content_tag.attr.creator, content_tag.attr.name; |
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113 | jingle.content, jingle.transport = content, transport; |
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114 | |
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115 | function jingle:decline() |
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116 | -- FIXME: Decline session |
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117 | end |
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118 | |
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119 | stream:hook("jingle/"..sid, function (stanza) |
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120 | if stanza.attr.from ~= jingle.peer then |
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121 | return false; |
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122 | end |
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123 | local jingle_tag = stanza:get_child("jingle", xmlns_jingle); |
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124 | return jingle:handle_command(jingle_tag); |
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125 | end); |
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126 | |
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127 | stream:event("jingle", jingle); |
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128 | return true; |
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129 | end |
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130 | |
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131 | function jingle_mt:handle_command(jingle_tag) |
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132 | local action = jingle_tag.attr.action; |
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133 | stream:debug("Handling Jingle command: %s", action); |
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134 | if action == "session-terminate" then |
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135 | self:destroy(); |
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136 | elseif action == "session-accept" then |
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137 | -- Yay! |
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138 | self:handle_accepted(jingle_tag); |
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139 | elseif action == "transport-info" then |
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140 | stream:debug("Handling transport-info"); |
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141 | self.transport:info_received(jingle_tag); |
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142 | elseif action == "transport-replace" then |
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143 | -- FIXME: Used for IBB fallback |
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144 | stream:error("Peer wanted to swap transport, not implemented"); |
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145 | else |
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146 | -- FIXME: Reply unhandled command |
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147 | stream:warn("Unhandled Jingle command: %s", action); |
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148 | return nil; |
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149 | end |
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150 | return true; |
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151 | end |
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152 | |
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153 | function jingle_mt:send_command(command, element, callback) |
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154 | local stanza = verse.iq({ to = self.peer, type = "set" }) |
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155 | :tag("jingle", { |
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156 | xmlns = xmlns_jingle, |
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157 | sid = self.sid, |
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158 | action = command, |
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159 | initiator = self.role == "initiator" and self.stream.jid or nil, |
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160 | responder = self.role == "responder" and self.jid or nil, |
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161 | }):add_child(element); |
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162 | if not callback then |
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163 | self.stream:send(stanza); |
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164 | else |
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165 | self.stream:send_iq(stanza, callback); |
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166 | end |
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167 | end |
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168 | |
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169 | function jingle_mt:accept(options) |
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170 | local accept_stanza = verse.iq({ to = self.peer, type = "set" }) |
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171 | :tag("jingle", { |
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172 | xmlns = xmlns_jingle, |
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173 | sid = self.sid, |
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174 | action = "session-accept", |
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175 | responder = stream.jid, |
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176 | }) |
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177 | :tag("content", { creator = self.creator, name = self.name }); |
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178 | |
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179 | local content_accept_tag = self.content:generate_accept(self.content_tag:child_with_name("description"), options); |
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180 | accept_stanza:add_child(content_accept_tag); |
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181 | |
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182 | local transport_accept_tag = self.transport:generate_accept(self.content_tag:child_with_name("transport"), options); |
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183 | accept_stanza:add_child(transport_accept_tag); |
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184 | |
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185 | local jingle = self; |
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186 | stream:send_iq(accept_stanza, function (result) |
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187 | if result.attr.type == "error" then |
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188 | local type, condition, text = result:get_error(); |
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189 | stream:error("session-accept rejected: %s", condition); -- FIXME: Notify |
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190 | return false; |
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191 | end |
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192 | jingle.transport:connect(function (conn) |
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193 | stream:warn("CONNECTED (receiver)!!!"); |
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194 | jingle.state = "active"; |
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195 | jingle:event("connected", conn); |
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196 | end); |
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197 | end); |
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198 | end |
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199 | |
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200 | |
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201 | stream:hook("iq/"..xmlns_jingle, handle_incoming_jingle); |
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202 | return true; |
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203 | end |
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204 | |
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205 | function jingle_mt:offer(name, content) |
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206 | local session_initiate = verse.iq({ to = self.peer, type = "set" }) |
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207 | :tag("jingle", { xmlns = xmlns_jingle, action = "session-initiate", |
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208 | initiator = self.stream.jid, sid = self.sid }); |
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209 | |
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210 | -- Content tag |
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211 | session_initiate:tag("content", { creator = self.role, name = name }); |
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212 | |
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213 | -- Need description element from someone who can turn 'content' into XML |
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214 | local description = self.stream:event("jingle/describe/"..name, content); |
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215 | |
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216 | if not description then |
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217 | return false, "Unknown content type"; |
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218 | end |
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219 | |
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220 | session_initiate:add_child(description); |
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221 | |
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222 | -- FIXME: Sort transports by 1) recipient caps 2) priority (SOCKS vs IBB, etc.) |
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223 | -- Fixed to s5b in the meantime |
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224 | local transport = self.stream:event("jingle/transport/".."urn:xmpp:jingle:transports:s5b:1", self); |
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225 | self.transport = transport; |
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226 | |
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227 | session_initiate:add_child(transport:generate_initiate()); |
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228 | |
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229 | self.stream:debug("Hooking %s", "jingle/"..self.sid); |
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230 | self.stream:hook("jingle/"..self.sid, function (stanza) |
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231 | if stanza.attr.from ~= self.peer then |
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232 | return false; |
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233 | end |
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234 | local jingle_tag = stanza:get_child("jingle", xmlns_jingle); |
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235 | return self:handle_command(jingle_tag) |
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236 | end); |
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237 | |
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238 | self.stream:send_iq(session_initiate, function (result) |
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239 | if result.type == "error" then |
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240 | self.state = "terminated"; |
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241 | local type, condition, text = result:get_error(); |
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242 | return self:event("error", { type = type, condition = condition, text = text }); |
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243 | end |
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244 | end); |
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245 | self.state = "pending"; |
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246 | end |
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247 | |
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248 | function jingle_mt:terminate(reason) |
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249 | local reason_tag = verse.stanza("reason"):tag(reason or "success"); |
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250 | self:send_command("session-terminate", reason_tag, function (result) |
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251 | self.state = "terminated"; |
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252 | self.transport:disconnect(); |
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253 | self:destroy(); |
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254 | end); |
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255 | end |
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256 | |
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257 | function jingle_mt:destroy() |
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258 | self:event("terminated"); |
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259 | self.stream:unhook("jingle/"..self.sid, self.handle_command); |
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260 | end |
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261 | |
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262 | function jingle_mt:handle_accepted(jingle_tag) |
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263 | local transport_tag = jingle_tag:child_with_name("transport"); |
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264 | self.transport:handle_accepted(transport_tag); |
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265 | self.transport:connect(function (conn) |
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266 | print("CONNECTED (initiator)!") |
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267 | -- Connected, send file |
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268 | self.state = "active"; |
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269 | self:event("connected", conn); |
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270 | end); |
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271 | end |
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272 | |
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273 | function jingle_mt:set_source(source, auto_close) |
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274 | local function pump() |
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275 | local chunk, err = source(); |
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276 | if chunk and chunk ~= "" then |
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277 | self.transport.conn:send(chunk); |
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278 | elseif chunk == "" then |
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279 | return pump(); -- We need some data! |
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280 | elseif chunk == nil then |
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281 | if auto_close then |
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282 | self:terminate(); |
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283 | end |
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284 | self.transport.conn:unhook("drained", pump); |
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285 | source = nil; |
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286 | end |
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287 | end |
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288 | self.transport.conn:hook("drained", pump); |
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289 | pump(); |
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290 | end |
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291 | |
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292 | function jingle_mt:set_sink(sink) |
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293 | self.transport.conn:hook("incoming-raw", sink); |
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294 | self.transport.conn:hook("disconnected", function (event) |
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295 | self.stream:debug("Closing sink..."); |
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296 | local reason = event.reason; |
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297 | if reason == "closed" then reason = nil; end |
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298 | sink(nil, reason); |
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299 | end); |
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300 | end |