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annotate mod_websocket/mod_websocket.lua @ 856:7eb54ed58856

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mod_websocket: Add CORS support
author Florian Zeitz <florob@babelmonkeys.de>
date Wed, 31 Oct 2012 20:07:23 +0100
parents 4d27552ac443
children 1393af36ec9c
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1 -- Prosody IM
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2 -- Copyright (C) 2008-2010 Matthew Wild
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3 -- Copyright (C) 2008-2010 Waqas Hussain
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4 -- Copyright (C) 2012 Florian Zeitz
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5 --
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6 -- This project is MIT/X11 licensed. Please see the
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7 -- COPYING file in the source package for more information.
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8 --
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9
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10 module:set_global();
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12 local add_task = require "util.timer".add_task;
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13 local new_xmpp_stream = require "util.xmppstream".new;
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14 local nameprep = require "util.encodings".stringprep.nameprep;
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15 local sessionmanager = require "core.sessionmanager";
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16 local st = require "util.stanza";
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17 local sm_new_session, sm_destroy_session = sessionmanager.new_session, sessionmanager.destroy_session;
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18 local uuid_generate = require "util.uuid".generate;
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19 local sha1 = require "util.hashes".sha1;
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20 local base64 = require "util.encodings".base64.encode;
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21 local band = require "bit".band;
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22 local bxor = require "bit".bxor;
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23
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24 local xpcall, tostring, type = xpcall, tostring, type;
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25 local traceback = debug.traceback;
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26
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27 local xmlns_xmpp_streams = "urn:ietf:params:xml:ns:xmpp-streams";
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28
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29 local log = module._log;
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30
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31 local c2s_timeout = module:get_option_number("c2s_timeout");
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32 local stream_close_timeout = module:get_option_number("c2s_close_timeout", 5);
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33 local opt_keepalives = module:get_option_boolean("tcp_keepalives", false);
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34 local self_closing_stream = module:get_option_boolean("websocket_self_closing_stream", true);
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35
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36 local cross_domain = module:get_option("cross_domain_websocket");
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37 if cross_domain then
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38 if cross_domain == true then
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39 cross_domain = "*";
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40 elseif type(cross_domain) == "table" then
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41 cross_domain = table.concat(cross_domain, ", ");
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42 end
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43 if type(cross_domain) ~= "string" then
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44 cross_domain = nil;
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45 end
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46 end
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47
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48 local sessions = module:shared("sessions");
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49 local core_process_stanza = prosody.core_process_stanza;
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50
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51 local stream_callbacks = { default_ns = "jabber:client", handlestanza = core_process_stanza };
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52 local listener = {};
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53
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54 -- Websocket helpers
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55 local function parse_frame(frame)
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56 local result = {};
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57 local pos = 1;
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58 local length_bytes = 0;
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59 local counter = 0;
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60 local tmp_byte;
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61
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62 if #frame < 2 then return; end
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63
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64 tmp_byte = string.byte(frame, pos);
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65 result.FIN = band(tmp_byte, 0x80) > 0;
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66 result.RSV1 = band(tmp_byte, 0x40) > 0;
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67 result.RSV2 = band(tmp_byte, 0x20) > 0;
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68 result.RSV3 = band(tmp_byte, 0x10) > 0;
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69 result.opcode = band(tmp_byte, 0x0F);
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70
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71 pos = pos + 1;
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72 tmp_byte = string.byte(frame, pos);
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73 result.MASK = band(tmp_byte, 0x80) > 0;
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74 result.length = band(tmp_byte, 0x7F);
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75
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76 if result.length == 126 then
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77 length_bytes = 2;
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78 result.length = 0;
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79 elseif result.length == 127 then
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80 length_bytes = 8;
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81 result.length = 0;
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82 end
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83
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84 if #frame < (2 + length_bytes) then return; end
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85
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86 for i = 1, length_bytes do
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87 pos = pos + 1;
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88 result.length = result.length * 256 + string.byte(frame, pos);
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89 end
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90
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91 if #frame < (2 + length_bytes + (result.MASK and 4 or 0) + result.length) then return; end
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92
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93 if result.MASK then
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94 result.key = {string.byte(frame, pos+1), string.byte(frame, pos+2),
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95 string.byte(frame, pos+3), string.byte(frame, pos+4)}
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96
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97 pos = pos + 5;
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98 result.data = "";
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99 for i = pos, pos + result.length - 1 do
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100 result.data = result.data .. string.char(bxor(result.key[counter+1], string.byte(frame, i)));
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101 counter = (counter + 1) % 4;
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102 end
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103 else
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104 result.data = frame:sub(pos + 1, pos + result.length);
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105 end
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106
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107 return result, 2 + length_bytes + (result.MASK and 4 or 0) + result.length;
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108 end
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109
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110 local function build_frame(desc)
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111 local length;
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112 local result = "";
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113 local data = desc.data or "";
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114
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115 result = result .. string.char(0x80 * (desc.FIN and 1 or 0) + desc.opcode);
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116
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117 length = #data;
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118 if length <= 125 then -- 7-bit length
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119 result = result .. string.char(length);
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120 elseif length <= 0xFFFF then -- 2-byte length
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121 result = result .. string.char(126);
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122 result = result .. string.char(length/0x100) .. string.char(length%0x100);
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123 else -- 8-byte length
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124 result = result .. string.char(127);
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125 for i = 7, 0, -1 do
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126 result = result .. string.char(( length / (2^(8*i)) ) % 0x100);
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127 end
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128 end
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diff changeset
129
842
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diff changeset
130 result = result .. data;
687
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diff changeset
131
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diff changeset
132 return result;
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133 end
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134
676
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diff changeset
135 --- Stream events handlers
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136 local stream_xmlns_attr = {xmlns='urn:ietf:params:xml:ns:xmpp-streams'};
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137 local default_stream_attr = { ["xmlns:stream"] = "http://etherx.jabber.org/streams", xmlns = stream_callbacks.default_ns, version = "1.0", id = "" };
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diff changeset
138
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diff changeset
139 function stream_callbacks.streamopened(session, attr)
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140 local send = session.send;
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diff changeset
141 session.host = nameprep(attr.to);
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diff changeset
142 if not session.host then
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143 session:close{ condition = "improper-addressing",
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diff changeset
144 text = "A valid 'to' attribute is required on stream headers" };
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diff changeset
145 return;
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146 end
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147 session.version = tonumber(attr.version) or 0;
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148 session.streamid = uuid_generate();
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diff changeset
149 (session.log or session)("debug", "Client sent opening <stream:stream> to %s", session.host);
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150
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151 if not hosts[session.host] then
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152 -- We don't serve this host...
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153 session:close{ condition = "host-unknown", text = "This server does not serve "..tostring(session.host)};
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diff changeset
154 return;
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155 end
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156
677
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157 -- COMPAT: Current client implementations need this to be self-closing
692
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158 if self_closing_stream then
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159 send("<?xml version='1.0'?>"..tostring(st.stanza("stream:stream", {
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160 xmlns = 'jabber:client', ["xmlns:stream"] = 'http://etherx.jabber.org/streams';
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diff changeset
161 id = session.streamid, from = session.host, version = '1.0', ["xml:lang"] = 'en' })));
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162 else
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163 send("<?xml version='1.0'?>"..st.stanza("stream:stream", {
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164 xmlns = 'jabber:client', ["xmlns:stream"] = 'http://etherx.jabber.org/streams';
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165 id = session.streamid, from = session.host, version = '1.0', ["xml:lang"] = 'en' }):top_tag());
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166 end
676
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167
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168 (session.log or log)("debug", "Sent reply <stream:stream> to client");
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169 session.notopen = nil;
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diff changeset
170
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171 -- If session.secure is *false* (not nil) then it means we /were/ encrypting
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172 -- since we now have a new stream header, session is secured
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173 if session.secure == false then
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174 session.secure = true;
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diff changeset
175 end
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diff changeset
176
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177 local features = st.stanza("stream:features");
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178 hosts[session.host].events.fire_event("stream-features", { origin = session, features = features });
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179 module:fire_event("stream-features", session, features);
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180
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181 send(features);
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diff changeset
182 end
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diff changeset
183
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184 function stream_callbacks.streamclosed(session)
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185 session.log("debug", "Received </stream:stream>");
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186 session:close(false);
676
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187 end
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diff changeset
188
129
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189 function stream_callbacks.error(session, error, data)
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190 if error == "no-stream" then
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191 session.log("debug", "Invalid opening stream header");
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192 session:close("invalid-namespace");
676
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193 elseif error == "parse-error" then
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194 (session.log or log)("debug", "Client XML parse error: %s", tostring(data));
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195 session:close("not-well-formed");
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196 elseif error == "stream-error" then
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diff changeset
197 local condition, text = "undefined-condition";
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diff changeset
198 for child in data:children() do
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diff changeset
199 if child.attr.xmlns == xmlns_xmpp_streams then
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diff changeset
200 if child.name ~= "text" then
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diff changeset
201 condition = child.name;
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diff changeset
202 else
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diff changeset
203 text = child:get_text();
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diff changeset
204 end
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diff changeset
205 if condition ~= "undefined-condition" and text then
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diff changeset
206 break;
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diff changeset
207 end
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diff changeset
208 end
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diff changeset
209 end
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diff changeset
210 text = condition .. (text and (" ("..text..")") or "");
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diff changeset
211 session.log("info", "Session closed by remote with error: %s", text);
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diff changeset
212 session:close(nil, text);
129
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213 end
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parents:
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214 end
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parents:
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215
676
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diff changeset
216 local function handleerr(err) log("error", "Traceback[c2s]: %s: %s", tostring(err), traceback()); end
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diff changeset
217 function stream_callbacks.handlestanza(session, stanza)
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diff changeset
218 stanza = session.filter("stanzas/in", stanza);
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diff changeset
219 if stanza then
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diff changeset
220 return xpcall(function () return core_process_stanza(session, stanza) end, handleerr);
129
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parents:
diff changeset
221 end
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parents:
diff changeset
222 end
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parents:
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223
676
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diff changeset
224 --- Session methods
129
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diff changeset
225 local function session_close(session, reason)
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226 local log = session.log or log;
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227 if session.conn then
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228 if session.notopen then
692
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229 -- COMPAT: Current client implementations need this to be self-closing
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diff changeset
230 if self_closing_stream then
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diff changeset
231 session.send("<?xml version='1.0'?>"..tostring(st.stanza("stream:stream", default_stream_attr)));
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232 else
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diff changeset
233 session.send("<?xml version='1.0'?>"..st.stanza("stream:stream", default_stream_attr):top_tag());
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234 end
129
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235 end
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236 if reason then -- nil == no err, initiated by us, false == initiated by client
129
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parents:
diff changeset
237 if type(reason) == "string" then -- assume stream error
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238 log("debug", "Disconnecting client, <stream:error> is: %s", reason);
129
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parents:
diff changeset
239 session.send(st.stanza("stream:error"):tag(reason, {xmlns = 'urn:ietf:params:xml:ns:xmpp-streams' }));
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parents:
diff changeset
240 elseif type(reason) == "table" then
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parents:
diff changeset
241 if reason.condition then
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parents:
diff changeset
242 local stanza = st.stanza("stream:error"):tag(reason.condition, stream_xmlns_attr):up();
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parents:
diff changeset
243 if reason.text then
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parents:
diff changeset
244 stanza:tag("text", stream_xmlns_attr):text(reason.text):up();
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245 end
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parents:
diff changeset
246 if reason.extra then
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parents:
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247 stanza:add_child(reason.extra);
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248 end
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249 log("debug", "Disconnecting client, <stream:error> is: %s", tostring(stanza));
129
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parents:
diff changeset
250 session.send(stanza);
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251 elseif reason.name then -- a stanza
839
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252 log("debug", "Disconnecting client, <stream:error> is: %s", tostring(reason));
129
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253 session.send(reason);
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254 end
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255 end
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256 end
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257 session.send("</stream:stream>");
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258 function session.send() return false; end
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259
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260 local reason = (reason and (reason.text or reason.condition)) or reason;
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261 session.log("info", "c2s stream for %s closed: %s", session.full_jid or ("<"..session.ip..">"), reason or "session closed");
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262
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263 -- Authenticated incoming stream may still be sending us stanzas, so wait for </stream:stream> from remote
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264 local conn = session.conn;
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265 if reason == nil and not session.notopen and session.type == "c2s" then
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266 -- Grace time to process data from authenticated cleanly-closed stream
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267 add_task(stream_close_timeout, function ()
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diff changeset
268 if not session.destroyed then
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269 session.log("warn", "Failed to receive a stream close response, closing connection anyway...");
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270 sm_destroy_session(session, reason);
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271 conn:close();
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272 end
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273 end);
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274 else
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275 sm_destroy_session(session, reason);
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276 conn:close();
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277 end
129
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278 end
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279 end
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280
839
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281 module:hook_global("user-deleted", function(event)
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282 local username, host = event.username, event.host;
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283 local user = hosts[host].sessions[username];
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284 if user and user.sessions then
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285 for jid, session in pairs(user.sessions) do
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286 session:close{ condition = "not-authorized", text = "Account deleted" };
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287 end
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288 end
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289 end, 200);
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290
676
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diff changeset
291 --- Port listener
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diff changeset
292 function listener.onconnect(conn)
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diff changeset
293 local session = sm_new_session(conn);
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diff changeset
294 sessions[conn] = session;
129
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295
676
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diff changeset
296 session.log("info", "Client connected");
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diff changeset
297
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diff changeset
298 -- Client is using legacy SSL (otherwise mod_tls sets this flag)
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parents: 129
diff changeset
299 if conn:ssl() then
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parents: 129
diff changeset
300 session.secure = true;
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parents: 129
diff changeset
301 end
129
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parents:
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302
676
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diff changeset
303 if opt_keepalives then
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parents: 129
diff changeset
304 conn:setoption("keepalive", opt_keepalives);
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diff changeset
305 end
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diff changeset
306
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diff changeset
307 session.close = session_close;
129
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parents:
diff changeset
308
853
4d27552ac443 mod_websocket: Don't offer starttls
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parents: 849
diff changeset
309 session.conn.starttls = nil;
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diff changeset
310
676
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diff changeset
311 local stream = new_xmpp_stream(session, stream_callbacks);
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diff changeset
312 session.stream = stream;
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diff changeset
313 session.notopen = true;
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parents: 129
diff changeset
314
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diff changeset
315 function session.reset_stream()
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diff changeset
316 session.notopen = true;
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diff changeset
317 session.stream:reset();
129
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parents:
diff changeset
318 end
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parents:
diff changeset
319
842
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diff changeset
320 local function websocket_close(code, message)
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diff changeset
321 local data = string.char(code/0x100) .. string.char(code%0x100) .. message;
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diff changeset
322 conn:write(build_frame({opcode = 0x8, FIN = true, data = data}));
32df4d13f178 mod_websocket: More robust frame handling
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diff changeset
323 conn:close();
32df4d13f178 mod_websocket: More robust frame handling
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diff changeset
324 end
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diff changeset
325
676
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diff changeset
326 local filter = session.filter;
842
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diff changeset
327 local dataBuffer;
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diff changeset
328 local function handle_frame(frame)
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parents: 840
diff changeset
329 module:log("debug", "Websocket received: %s (%i bytes)", frame.data, #frame.data);
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parents: 840
diff changeset
330
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
331 -- Error cases
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parents: 840
diff changeset
332 if frame.RSV1 or frame.RSV2 or frame.RSV3 then -- Reserved bits non zero
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
333 websocket_close(1002, "Reserved bits not zero");
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
334 return false;
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
335 end
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
336
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
337 if frame.opcode >= 0x8 and frame.length > 125 then -- Control frame with too much payload
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
338 websocket_close(1002, "Payload too large");
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
339 return false;
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
340 end
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parents: 840
diff changeset
341
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parents: 840
diff changeset
342 if frame.opcode >= 0x8 and not frame.FIN then -- Fragmented control frame
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parents: 840
diff changeset
343 websocket_close(1002, "Fragmented control frame");
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parents: 840
diff changeset
344 return false;
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parents: 840
diff changeset
345 end
690
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parents: 689
diff changeset
346
842
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
347 if (frame.opcode > 0x2 and frame.opcode < 0x8) or (frame.opcode > 0xA) then
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parents: 840
diff changeset
348 websocket_close(1002, "Reserved opcode");
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parents: 840
diff changeset
349 return false;
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
350 end
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parents: 840
diff changeset
351
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
352 if frame.opcode == 0x0 and not dataBuffer then
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
353 websocket_close(1002, "Unexpected continuation frame");
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parents: 840
diff changeset
354 return false;
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
355 end
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parents: 840
diff changeset
356
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parents: 840
diff changeset
357 if (frame.opcode == 0x1 or frame.opcode == 0x2) and dataBuffer then
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parents: 840
diff changeset
358 websocket_close(1002, "Continuation frame expected");
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parents: 840
diff changeset
359 return false;
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parents: 840
diff changeset
360 end
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parents: 840
diff changeset
361
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parents: 840
diff changeset
362 -- Valid cases
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Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
363 if frame.opcode == 0x0 then -- Continuation frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
364 dataBuffer = dataBuffer .. frame.data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
365 elseif frame.opcode == 0x1 then -- Text frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
366 dataBuffer = frame.data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
367 elseif frame.opcode == 0x2 then -- Binary frame
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Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
368 websocket_close(1003, "Only text frames are supported");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
369 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
370 elseif frame.opcode == 0x8 then -- Close request
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
371 websocket_close(1000, "Goodbye");
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Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
372 return false;
691
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
373 elseif frame.opcode == 0x9 then -- Ping frame
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
374 frame.opcode = 0xA;
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
375 conn:write(build_frame(frame));
842
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
376 return true;
690
5acc203972f3 mod_websocket: Add fragmentation support
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parents: 689
diff changeset
377 else
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parents: 689
diff changeset
378 log("warn", "Received frame with unsupported opcode %i", frame.opcode);
842
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parents: 840
diff changeset
379 return true;
690
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parents: 689
diff changeset
380 end
676
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diff changeset
381
690
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parents: 689
diff changeset
382 if frame.FIN then
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
383 data = dataBuffer;
32df4d13f178 mod_websocket: More robust frame handling
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parents: 840
diff changeset
384 dataBuffer = nil;
690
5acc203972f3 mod_websocket: Add fragmentation support
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parents: 689
diff changeset
385
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parents: 689
diff changeset
386 -- COMPAT: Current client implementations send a self-closing <stream:stream>
692
2de21fa40382 mod_websocket: Make sending a self-closing <stream:stream> tag configurable
Florian Zeitz <florob@babelmonkeys.de>
parents: 691
diff changeset
387 if self_closing_stream then
693
7d165cd6168c mod_websocket: Only un-self-close <stream:stream>s
Florian Zeitz <florob@babelmonkeys.de>
parents: 692
diff changeset
388 data = data:gsub("(<stream:stream.*)/>$", "%1>");
692
2de21fa40382 mod_websocket: Make sending a self-closing <stream:stream> tag configurable
Florian Zeitz <florob@babelmonkeys.de>
parents: 691
diff changeset
389 end
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
390
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
391 data = filter("bytes/in", data);
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
392 if data then
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
393 local ok, err = stream:feed(data);
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
394 if ok then return; end
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
395 log("debug", "Received invalid XML (%s) %d bytes: %s", tostring(err), #data, data:sub(1, 300):gsub("[\r\n]+", " "):gsub("[%z\1-\31]", "_"));
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
396 session:close("not-well-formed");
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
397 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
398 end
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
399 return true;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
400 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
401
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
402 local frameBuffer = "";
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
403 function session.data(data)
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
404 frameBuffer = frameBuffer .. data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
405 local frame, length = parse_frame(frameBuffer);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
406
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
407 while frame do
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
408 frameBuffer = frameBuffer:sub(length + 1);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
409 if not handle_frame(frame) then return; end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
410 frame, length = parse_frame(frameBuffer);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
411 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
412 end
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
413
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
414 function session.send(s)
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
415 conn:write(build_frame({ FIN = true, opcode = 0x01, data = tostring(s)}));
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
416 end
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
417
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
418 if c2s_timeout then
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
419 add_task(c2s_timeout, function ()
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
420 if session.type == "c2s_unauthed" then
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
421 session:close("connection-timeout");
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
422 end
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
423 end);
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
424 end
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
425
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
426 session.dispatch_stanza = stream_callbacks.handlestanza;
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
427 end
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
428
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
429 function listener.onincoming(conn, data)
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
430 local session = sessions[conn];
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
431 if session then
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
432 session.data(data);
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
433 else
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
434 listener.onconnect(conn, data);
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
435 session = sessions[conn];
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
436 session.data(data);
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
437 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
438 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
439
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
440 function listener.ondisconnect(conn, err)
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
441 local session = sessions[conn];
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
442 if session then
839
d297d76010d4 mod_websocket: Merge with current mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 694
diff changeset
443 (session.log or log)("info", "Client disconnected: %s", err or "connection closed");
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
444 sm_destroy_session(session, err);
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
445 sessions[conn] = nil;
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
446 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
447 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
448
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
449 function listener.associate_session(conn, session)
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
450 sessions[conn] = session;
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
451 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
452
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
453 function handle_request(event, path)
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
454 local request, response = event.request, event.response;
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
455
689
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
456 if not request.headers.sec_websocket_key then
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
457 response.headers.content_type = "text/html";
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
458 return [[<!DOCTYPE html><html><head><title>Websocket</title></head><body>
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
459 <p>It works! Now point your WebSocket client to this URL to connect to Prosody.</p>
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
460 </body></html>]];
4d21bd5dde49 mod_websocket: Be nice to non-websocket clients
Florian Zeitz <florob@babelmonkeys.de>
parents: 688
diff changeset
461 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
462
844
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
463 local wants_xmpp = false;
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
464 (request.headers.sec_websocket_protocol or ""):gsub("([^,]*),?", function (proto)
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
465 if proto == "xmpp" then wants_xmpp = true; end
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
466 end);
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
467
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
468 if not wants_xmpp then
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
469 return 501;
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
470 end
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
471
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
472 response.conn:setlistener(listener);
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
473 response.status = "101 Switching Protocols";
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
474 response.headers.Upgrade = "websocket";
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
475 response.headers.Connection = "Upgrade";
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
476 response.headers.Sec_WebSocket_Accept = base64(sha1(request.headers.sec_websocket_key .. "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"));
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
477 response.headers.Sec_WebSocket_Protocol = "xmpp";
856
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
478 response.headers.Access_Control_Allow_Origin = cross_domain;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
479
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
480 return "";
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
481 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
482
688
e87678a52720 mod_websocket: Make this a shared module
Florian Zeitz <florob@babelmonkeys.de>
parents: 687
diff changeset
483 function module.add_host(module)
e87678a52720 mod_websocket: Make this a shared module
Florian Zeitz <florob@babelmonkeys.de>
parents: 687
diff changeset
484 module:depends("http");
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
485 module:provides("http", {
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
486 name = "xmpp-websocket";
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
487 route = {
849
6e2ec1825182 mod_websocket: Accept GET request without trailing /
Florian Zeitz <florob@babelmonkeys.de>
parents: 844
diff changeset
488 ["GET"] = handle_request;
6e2ec1825182 mod_websocket: Accept GET request without trailing /
Florian Zeitz <florob@babelmonkeys.de>
parents: 844
diff changeset
489 ["GET /"] = handle_request;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
490 };
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
491 });
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
492 end