annotate mod_websocket/mod_websocket.lua @ 975:08628703456a

mod_muc_log_http: do some more cleanup of the code.
author Marco Cirillo <maranda@lightwitch.org>
date Mon, 08 Apr 2013 00:52:16 +0200
parents 8eba9d4809d2
children b56a9aa171b3
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
1 -- Prosody IM
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
2 -- Copyright (C) 2012 Florian Zeitz
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
3 --
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
4 -- This project is MIT/X11 licensed. Please see the
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
5 -- COPYING file in the source package for more information.
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
6 --
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
7
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
8 module:set_global();
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
9
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
10 local add_filter = require "util.filters".add_filter;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
11 local sha1 = require "util.hashes".sha1;
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
12 local base64 = require "util.encodings".base64.encode;
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
13 local softreq = require "util.dependencies".softreq;
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
14 local portmanager = require "core.portmanager";
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
15
905
eae665bc2122 mod_websocket: Fix require to work with lua-bitop (Thanks István and Zash)
Florian Zeitz <florob@babelmonkeys.de>
parents: 895
diff changeset
16 local bit;
eae665bc2122 mod_websocket: Fix require to work with lua-bitop (Thanks István and Zash)
Florian Zeitz <florob@babelmonkeys.de>
parents: 895
diff changeset
17 pcall(function() bit = require"bit"; end);
eae665bc2122 mod_websocket: Fix require to work with lua-bitop (Thanks István and Zash)
Florian Zeitz <florob@babelmonkeys.de>
parents: 895
diff changeset
18 bit = bit or softreq"bit32"
eae665bc2122 mod_websocket: Fix require to work with lua-bitop (Thanks István and Zash)
Florian Zeitz <florob@babelmonkeys.de>
parents: 895
diff changeset
19 if not bit then module:log("error", "No bit module found. Either LuaJIT 2, lua-bitop or Lua 5.2 is required"); end
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
20 local band = bit.band;
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
21 local bxor = bit.bxor;
910
c469a2b2d77d mod_websocket: Avoid floating point division
Florian Zeitz <florob@babelmonkeys.de>
parents: 909
diff changeset
22 local rshift = bit.rshift;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
23
856
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
24 local cross_domain = module:get_option("cross_domain_websocket");
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
25 if cross_domain then
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
26 if cross_domain == true then
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
27 cross_domain = "*";
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
28 elseif type(cross_domain) == "table" then
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
29 cross_domain = table.concat(cross_domain, ", ");
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
30 end
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
31 if type(cross_domain) ~= "string" then
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
32 cross_domain = nil;
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
33 end
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
34 end
7eb54ed58856 mod_websocket: Add CORS support
Florian Zeitz <florob@babelmonkeys.de>
parents: 853
diff changeset
35
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
36 module:depends("c2s")
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
37 local sessions = module:shared("c2s/sessions");
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
38 local c2s_listener = portmanager.get_service("c2s").listener;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
39
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
40 -- Websocket helpers
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
41 local function parse_frame(frame)
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
42 local result = {};
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
43 local pos = 1;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
44 local length_bytes = 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
45 local counter = 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
46 local tmp_byte;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
47
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
48 if #frame < 2 then return; end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
49
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
50 tmp_byte = string.byte(frame, pos);
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
51 result.FIN = band(tmp_byte, 0x80) > 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
52 result.RSV1 = band(tmp_byte, 0x40) > 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
53 result.RSV2 = band(tmp_byte, 0x20) > 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
54 result.RSV3 = band(tmp_byte, 0x10) > 0;
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
55 result.opcode = band(tmp_byte, 0x0F);
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
56
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
57 pos = pos + 1;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
58 tmp_byte = string.byte(frame, pos);
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
59 result.MASK = band(tmp_byte, 0x80) > 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
60 result.length = band(tmp_byte, 0x7F);
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
61
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
62 if result.length == 126 then
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
63 length_bytes = 2;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
64 result.length = 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
65 elseif result.length == 127 then
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
66 length_bytes = 8;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
67 result.length = 0;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
68 end
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
69
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
70 if #frame < (2 + length_bytes) then return; end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
71
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
72 for i = 1, length_bytes do
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
73 pos = pos + 1;
840
f568661c9d39 mod_websocket: Fix frame length calculation
Florian Zeitz <florob@babelmonkeys.de>
parents: 839
diff changeset
74 result.length = result.length * 256 + string.byte(frame, pos);
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
75 end
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
76
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
77 if #frame < (2 + length_bytes + (result.MASK and 4 or 0) + result.length) then return; end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
78
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
79 if result.MASK then
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
80 result.key = {string.byte(frame, pos+1), string.byte(frame, pos+2),
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
81 string.byte(frame, pos+3), string.byte(frame, pos+4)}
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
82
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
83 pos = pos + 5;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
84 result.data = "";
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
85 for i = pos, pos + result.length - 1 do
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
86 result.data = result.data .. string.char(bxor(result.key[counter+1], string.byte(frame, i)));
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
87 counter = (counter + 1) % 4;
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
88 end
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
89 else
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
90 result.data = frame:sub(pos + 1, pos + result.length);
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
91 end
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
92
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
93 return result, 2 + length_bytes + (result.MASK and 4 or 0) + result.length;
677
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
94 end
eeb41cd5e9f3 mod_websocket: Move frame handling into a separate function
Florian Zeitz <florob@babelmonkeys.de>
parents: 676
diff changeset
95
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
96 local function build_frame(desc)
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
97 local length;
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
98 local result = "";
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
99 local data = desc.data or "";
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
100
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
101 result = result .. string.char(0x80 * (desc.FIN and 1 or 0) + desc.opcode);
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
102
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
103 length = #data;
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
104 if length <= 125 then -- 7-bit length
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
105 result = result .. string.char(length);
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
106 elseif length <= 0xFFFF then -- 2-byte length
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
107 result = result .. string.char(126);
910
c469a2b2d77d mod_websocket: Avoid floating point division
Florian Zeitz <florob@babelmonkeys.de>
parents: 909
diff changeset
108 result = result .. string.char(rshift(length, 8)) .. string.char(length%0x100);
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
109 else -- 8-byte length
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
110 result = result .. string.char(127);
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
111 for i = 7, 0, -1 do
910
c469a2b2d77d mod_websocket: Avoid floating point division
Florian Zeitz <florob@babelmonkeys.de>
parents: 909
diff changeset
112 result = result .. string.char(rshift(length, 8*i) % 0x100);
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
113 end
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
114 end
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
115
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
116 result = result .. data;
687
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
117
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
118 return result;
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
119 end
d141375ece4b mod_websocket: Move frame building into a function
Florian Zeitz <florob@babelmonkeys.de>
parents: 677
diff changeset
120
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
121 --- Filter stuff
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
122 function handle_request(event, path)
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
123 local request, response = event.request, event.response;
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
124 local conn = response.conn;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
125
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
126 if not request.headers.sec_websocket_key then
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
127 response.headers.content_type = "text/html";
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
128 return [[<!DOCTYPE html><html><head><title>Websocket</title></head><body>
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
129 <p>It works! Now point your WebSocket client to this URL to connect to Prosody.</p>
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
130 </body></html>]];
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
131 end
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
132
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
133 local wants_xmpp = false;
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
134 (request.headers.sec_websocket_protocol or ""):gsub("([^,]*),?", function (proto)
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
135 if proto == "xmpp" then wants_xmpp = true; end
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
136 end);
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
137
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
138 if not wants_xmpp then
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
139 return 501;
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
140 end
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
141
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
142 local function websocket_close(code, message)
910
c469a2b2d77d mod_websocket: Avoid floating point division
Florian Zeitz <florob@babelmonkeys.de>
parents: 909
diff changeset
143 local data = string.char(rshift(code, 8)) .. string.char(code%0x100) .. message;
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
144 conn:write(build_frame({opcode = 0x8, FIN = true, data = data}));
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
145 conn:close();
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
146 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
147
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
148 local dataBuffer;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
149 local function handle_frame(frame)
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
150 module:log("debug", "Websocket received: %s (%i bytes)", frame.data, #frame.data);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
151
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
152 -- Error cases
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
153 if frame.RSV1 or frame.RSV2 or frame.RSV3 then -- Reserved bits non zero
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
154 websocket_close(1002, "Reserved bits not zero");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
155 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
156 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
157
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
158 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
159 websocket_close(1002, "Payload too large");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
160 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
161 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
162
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
163 if frame.opcode >= 0x8 and not frame.FIN then -- Fragmented control frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
164 websocket_close(1002, "Fragmented control frame");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
165 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
166 end
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
167
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
168 if (frame.opcode > 0x2 and frame.opcode < 0x8) or (frame.opcode > 0xA) then
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
169 websocket_close(1002, "Reserved opcode");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
170 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
171 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
172
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
173 if frame.opcode == 0x0 and not dataBuffer then
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
174 websocket_close(1002, "Unexpected continuation frame");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
175 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
176 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
177
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
178 if (frame.opcode == 0x1 or frame.opcode == 0x2) and dataBuffer then
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
179 websocket_close(1002, "Continuation frame expected");
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
180 return false;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
181 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
182
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
183 -- Valid cases
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
184 if frame.opcode == 0x0 then -- Continuation frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
185 dataBuffer = dataBuffer .. frame.data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
186 elseif frame.opcode == 0x1 then -- Text frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
187 dataBuffer = frame.data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
188 elseif frame.opcode == 0x2 then -- Binary frame
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
189 websocket_close(1003, "Only text frames are supported");
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
190 return;
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
191 elseif frame.opcode == 0x8 then -- Close request
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
192 websocket_close(1000, "Goodbye");
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
193 return;
691
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
194 elseif frame.opcode == 0x9 then -- Ping frame
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
195 frame.opcode = 0xA;
04662cc35280 mod_websocket: Answer ping frames
Florian Zeitz <florob@babelmonkeys.de>
parents: 690
diff changeset
196 conn:write(build_frame(frame));
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
197 return "";
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
198 else
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
199 log("warn", "Received frame with unsupported opcode %i", frame.opcode);
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
200 return "";
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
201 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
202
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
203 if frame.FIN then
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
204 data = dataBuffer;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
205 dataBuffer = nil;
690
5acc203972f3 mod_websocket: Add fragmentation support
Florian Zeitz <florob@babelmonkeys.de>
parents: 689
diff changeset
206
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
207 return data;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
208 end
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
209 return "";
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
210 end
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
211
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
212 conn:setlistener(c2s_listener);
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
213 c2s_listener.onconnect(conn);
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
214
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
215 local frameBuffer = "";
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
216 add_filter(sessions[conn], "bytes/in", function(data)
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
217 local cache = "";
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
218 frameBuffer = frameBuffer .. data;
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
219 local frame, length = parse_frame(frameBuffer);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
220
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
221 while frame do
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
222 frameBuffer = frameBuffer:sub(length + 1);
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
223 local result = handle_frame(frame);
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
224 if not result then return; end
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
225 cache = cache .. result;
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
226 frame, length = parse_frame(frameBuffer);
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
227 end
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
228 return cache;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
229
844
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
230 end);
a0987c0e4e1d mod_websocket: Check whether the xmpp sub-protocol was requested
Florian Zeitz <florob@babelmonkeys.de>
parents: 842
diff changeset
231
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
232 add_filter(sessions[conn], "bytes/out", function(data)
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
233 return build_frame({ FIN = true, opcode = 0x01, data = tostring(data)});
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
234 end);
842
32df4d13f178 mod_websocket: More robust frame handling
Florian Zeitz <florob@babelmonkeys.de>
parents: 840
diff changeset
235
969
8eba9d4809d2 mod_websocket: Set status_code instead of status
Florian Zeitz <florob@babelmonkeys.de>
parents: 910
diff changeset
236 response.status_code = 101;
895
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
237 response.headers.upgrade = "websocket";
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
238 response.headers.connection = "Upgrade";
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
239 response.headers.sec_webSocket_accept = base64(sha1(request.headers.sec_websocket_key .. "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"));
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
240 response.headers.sec_webSocket_protocol = "xmpp";
1f4d77104da5 mod_websocket: Simplify by getting the c2s_listener from mod_c2s
Florian Zeitz <florob@babelmonkeys.de>
parents: 857
diff changeset
241 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
242
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
243 return "";
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
244 end
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
245
688
e87678a52720 mod_websocket: Make this a shared module
Florian Zeitz <florob@babelmonkeys.de>
parents: 687
diff changeset
246 function module.add_host(module)
e87678a52720 mod_websocket: Make this a shared module
Florian Zeitz <florob@babelmonkeys.de>
parents: 687
diff changeset
247 module:depends("http");
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
248 module:provides("http", {
909
ec4c6e8f277d mod_websocket: Change the HTTP name to websocket, and override the default_path instead
Florian Zeitz <florob@babelmonkeys.de>
parents: 905
diff changeset
249 name = "websocket";
ec4c6e8f277d mod_websocket: Change the HTTP name to websocket, and override the default_path instead
Florian Zeitz <florob@babelmonkeys.de>
parents: 905
diff changeset
250 default_path = "xmpp-websocket";
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
251 route = {
849
6e2ec1825182 mod_websocket: Accept GET request without trailing /
Florian Zeitz <florob@babelmonkeys.de>
parents: 844
diff changeset
252 ["GET"] = handle_request;
6e2ec1825182 mod_websocket: Accept GET request without trailing /
Florian Zeitz <florob@babelmonkeys.de>
parents: 844
diff changeset
253 ["GET /"] = handle_request;
676
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
254 };
54fa9d6d7809 mod_websocket: New mod_c2s based version, still WIP
Florian Zeitz <florob@babelmonkeys.de>
parents: 129
diff changeset
255 });
129
5fc00a3e47b5 mod_websocket: Initial commit
Ali Sabil <ali.sabil@gmail.com>
parents:
diff changeset
256 end