1 | /* Tests for the support_format_dns_packet function. |
2 | Copyright (C) 2016-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #include <support/check.h> |
20 | #include <support/format_nss.h> |
21 | #include <support/run_diff.h> |
22 | |
23 | #include <stdio.h> |
24 | #include <stdlib.h> |
25 | #include <string.h> |
26 | |
27 | static void |
28 | check_packet (const void *buffer, size_t length, |
29 | const char *name, const char *expected) |
30 | { |
31 | char *actual = support_format_dns_packet (buffer, length); |
32 | if (strcmp (s1: actual, s2: expected) != 0) |
33 | { |
34 | support_record_failure (); |
35 | printf (format: "error: formatted packet does not match: %s\n" , name); |
36 | support_run_diff (left_label: "expected" , left: expected, |
37 | right_label: "actual" , right: actual); |
38 | } |
39 | free (ptr: actual); |
40 | } |
41 | |
42 | static void |
43 | test_aaaa_length (void) |
44 | { |
45 | static const char packet[] = |
46 | /* Header: Response with two records. */ |
47 | "\x12\x34\x80\x00\x00\x01\x00\x02\x00\x00\x00\x00" |
48 | /* Question section. www.example/IN/AAAA. */ |
49 | "\x03www\x07" "example\x00\x00\x1c\x00\x01" |
50 | /* Answer section. www.example AAAA [corrupted]. */ |
51 | "\xc0\x0c" |
52 | "\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x10" |
53 | "\x20\x01\x0d\xb8\x05\x06\x07\x08" |
54 | "\x11\x12\x13\x14\x15\x16\x17\x18" |
55 | /* www.example AAAA [corrupted]. */ |
56 | "\xc0\x0c" |
57 | "\x00\x1c\x00\x01\x00\x00\x00\x00\x00\x11" |
58 | "\x01\x02\x03\x04\x05\x06\x07\x08" |
59 | "\x11\x12\x13\x14\x15\x16\x17\x18" "\xff" ; |
60 | check_packet (buffer: packet, length: sizeof (packet) - 1, name: __func__, |
61 | expected: "name: www.example\n" |
62 | "address: 2001:db8:506:708:1112:1314:1516:1718\n" |
63 | "error: AAAA record of size 17: www.example\n" ); |
64 | } |
65 | |
66 | static void |
67 | test_multiple_cnames (void) |
68 | { |
69 | static const char packet[] = |
70 | /* Header: Response with three records. */ |
71 | "\x12\x34\x80\x00\x00\x01\x00\x03\x00\x00\x00\x00" |
72 | /* Question section. www.example/IN/A. */ |
73 | "\x03www\x07" "example\x00\x00\x01\x00\x01" |
74 | /* Answer section. www.example CNAME www1.example. */ |
75 | "\xc0\x0c" |
76 | "\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07" |
77 | "\x04www1\xc0\x10" |
78 | /* www1 CNAME www2. */ |
79 | "\x04www1\xc0\x10" |
80 | "\x00\x05\x00\x01\x00\x00\x00\x00\x00\x07" |
81 | "\x04www2\xc0\x10" |
82 | /* www2 A 192.0.2.1. */ |
83 | "\x04www2\xc0\x10" |
84 | "\x00\x01\x00\x01\x00\x00\x00\x00\x00\x04" |
85 | "\xc0\x00\x02\x01" ; |
86 | check_packet (buffer: packet, length: sizeof (packet) - 1, name: __func__, |
87 | expected: "name: www.example\n" |
88 | "name: www1.example\n" |
89 | "name: www2.example\n" |
90 | "address: 192.0.2.1\n" ); |
91 | } |
92 | |
93 | static int |
94 | do_test (void) |
95 | { |
96 | test_aaaa_length (); |
97 | test_multiple_cnames (); |
98 | return 0; |
99 | } |
100 | |
101 | #include <support/test-driver.c> |
102 | |