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c803cb9b | 1 | /* Test ns_name_compress corner cases. |
04277e02 | 2 | Copyright (C) 2017-2019 Free Software Foundation, Inc. |
c803cb9b FW |
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 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #include <resolv.h> | |
20 | #include <stdlib.h> | |
25cfd502 | 21 | #include <string.h> |
c803cb9b FW |
22 | #include <support/check.h> |
23 | #include <support/support.h> | |
24 | ||
25 | /* Check that we can process names which fit into the destination | |
26 | buffer exactly. See bug 21359. */ | |
27 | static void | |
28 | test_exact_fit (const char *name, size_t length) | |
29 | { | |
30 | unsigned char *buf = xmalloc (length + 1); | |
31 | memset (buf, '$', length + 1); | |
32 | enum { ptr_count = 5 }; | |
33 | const unsigned char *dnptrs[ptr_count] = { buf, }; | |
34 | int ret = ns_name_compress (name, buf, length, | |
35 | dnptrs, dnptrs + ptr_count); | |
36 | if (ret < 0) | |
37 | { | |
38 | support_record_failure (); | |
39 | printf ("error: ns_name_compress for %s/%zu failed\n", name, length); | |
40 | return; | |
41 | } | |
42 | if ((size_t) ret != length) | |
43 | { | |
44 | support_record_failure (); | |
45 | printf ("error: ns_name_compress for %s/%zu result mismatch: %d\n", | |
46 | name, length, ret); | |
47 | } | |
48 | if (buf[length] != '$') | |
49 | { | |
50 | support_record_failure (); | |
51 | printf ("error: ns_name_compress for %s/%zu padding write\n", | |
52 | name, length); | |
53 | } | |
54 | free (buf); | |
55 | } | |
56 | ||
57 | static int | |
58 | do_test (void) | |
59 | { | |
60 | test_exact_fit ("abc", 5); | |
61 | test_exact_fit ("abc.", 5); | |
62 | { | |
63 | char long_name[] | |
64 | = "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." | |
65 | "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." | |
66 | "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa." | |
67 | "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa."; | |
68 | TEST_VERIFY (strlen (long_name) == NS_MAXCDNAME - 1); | |
69 | test_exact_fit (long_name, NS_MAXCDNAME); | |
70 | long_name[sizeof (long_name) - 1] = '\0'; | |
71 | test_exact_fit (long_name, NS_MAXCDNAME); | |
72 | } | |
73 | return 0; | |
74 | } | |
75 | ||
76 | #include <support/test-driver.c> |