prosody
713f8ee9e1b4
spec/net_stun_spec.lua

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spec/net_stun_spec.lua @ 12361:713f8ee9e1b4

net.stun: Add tests for serialization/deserialization
author Matthew Wild <mwild1@gmail.com>
date Fri, 04 Mar 2022 16:13:05 +0000
child 12363:0576d7d625a0
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12360:0801db678f5e 12361:713f8ee9e1b4
1 local hex = require "util.hex";
2
3 local function parse(pkt_desc)
4 local result = {};
5 for line in pkt_desc:gmatch("([^\n]+)\n") do
6 local b1, b2, b3, b4 = line:match("^%s*(%x%x) (%x%x) (%x%x) (%x%x)%s");
7 if b1 then
8 table.insert(result, b1);
9 table.insert(result, b2);
10 table.insert(result, b3);
11 table.insert(result, b4);
12 end
13 end
14 return hex.decode(table.concat(result));
15 end
16
17 local sample_packet = parse[[
18 00 01 00 60 Request type and message length
19 21 12 a4 42 Magic cookie
20 78 ad 34 33 }
21 c6 ad 72 c0 } Transaction ID
22 29 da 41 2e }
23 00 06 00 12 USERNAME attribute header
24 e3 83 9e e3 }
25 83 88 e3 83 }
26 aa e3 83 83 } Username value (18 bytes) and padding (2 bytes)
27 e3 82 af e3 }
28 82 b9 00 00 }
29 00 15 00 1c NONCE attribute header
30 66 2f 2f 34 }
31 39 39 6b 39 }
32 35 34 64 36 }
33 4f 4c 33 34 } Nonce value
34 6f 4c 39 46 }
35 53 54 76 79 }
36 36 34 73 41 }
37 00 14 00 0b REALM attribute header
38 65 78 61 6d }
39 70 6c 65 2e } Realm value (11 bytes) and padding (1 byte)
40 6f 72 67 00 }
41 00 08 00 14 MESSAGE-INTEGRITY attribute header
42 f6 70 24 65 }
43 6d d6 4a 3e }
44 02 b8 e0 71 } HMAC-SHA1 fingerprint
45 2e 85 c9 a2 }
46 8c a8 96 66 }
47 ]];
48
49 --print(hex.encode(sample_packet))
50 print(sample_packet)
51
52 describe("net.stun", function ()
53 local stun = require "net.stun";
54
55 it("works", function ()
56 local packet = stun.new_packet();
57 assert.is_string(packet:serialize());
58 end);
59
60 it("can decode the sample packet", function ()
61 local packet = stun.new_packet():deserialize(sample_packet);
62 assert(packet);
63 local method, method_name = packet:get_method();
64 assert.equal(1, method);
65 assert.equal("binding", method_name);
66 assert.equal("example.org", packet:get_attribute("realm"));
67 end);
68
69 it("can generate the sample packet", function ()
70 -- These values, and the sample packet, come from RFC 5769 2.4
71 local username = string.char(
72 -- U+30DE KATAKANA LETTER MA
73 0xE3, 0x83, 0x9E,
74 -- U+30C8 KATAKANA LETTER TO
75 0xE3, 0x83, 0x88,
76 -- U+30EA KATAKANA LETTER RI
77 0xE3, 0x83, 0xAA,
78 -- U+30C3 KATAKANA LETTER SMALL TU
79 0xE3, 0x83, 0x83,
80 -- U+30AF KATAKANA LETTER KU
81 0xE3, 0x82, 0xAF,
82 -- U+30B9 KATAKANA LETTER SU
83 0xE3, 0x82, 0xB9
84 );
85
86 -- Password: "The<U+00AD>M<U+00AA>tr<U+2168>" and "TheMatrIX" (without
87 -- quotes) respectively before and after SASLprep processing
88 local password = "TheMatrIX";
89 local realm = "example.org";
90
91 local p3 = stun.new_packet("binding", "request");
92 p3.transaction_id = hex.decode("78AD3433C6AD72C029DA412E");
93 p3:add_attribute("username", username);
94 p3:add_attribute("nonce", "f//499k954d6OL34oL9FSTvy64sA");
95 p3:add_attribute("realm", realm);
96 local key = stun.get_long_term_auth_key(realm, username, password);
97 p3:add_message_integrity(key);
98 assert.equal(sample_packet, p3:serialize());
99 end);
100 end);