1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
|
/* Tests for res_hnok and related functions.
Copyright (C) 2017-2020 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <array_length.h>
#include <resolv.h>
#include <string.h>
#include <support/check.h>
#include <support/test-driver.h>
/* Bits which indicate which functions are supposed to report
success. */
enum
{
hnok = 1,
dnok = 2,
mailok = 4,
ownok = 8,
allnomailok = hnok | dnok | ownok,
allok = hnok | dnok | mailok | ownok
};
/* A string of 60 characters. */
#define STRING60 "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
/* A string of 63 characters (maximum label length). */
#define STRING63 STRING60 "zzz"
/* Combines a test name with the expected results. */
struct test_case
{
const char *dn;
unsigned int result; /* Combination of the *ok flags. */
};
static const struct test_case tests[] =
{
{ "", allok },
{ ".", allok },
{ "..", 0 },
{ "www", allnomailok },
{ "www.", allnomailok },
{ "example", allnomailok },
{ "example.com", allok },
{ "www.example.com", allok },
{ "www.example.com.", allok },
{ "www-.example.com.", allok },
{ "www.-example.com.", allok },
{ "*.example.com", dnok | mailok | ownok },
{ "-v", dnok },
{ "-v.example.com", mailok | dnok },
{ "**.example.com", dnok | mailok },
{ "www.example.com\\", 0 },
{ STRING63, allnomailok },
{ STRING63 ".", allnomailok },
{ STRING63 "\\.", 0 },
{ STRING63 "z", 0 },
{ STRING63 ".example.com", allok },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "z", allok },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "z.", allok },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "zz", 0 },
{ STRING63 "." STRING63 "." STRING63 "." STRING60 "zzz", 0 },
{ "hostmaster@mail.example.com", dnok | mailok },
{ "hostmaster\\@mail.example.com", dnok | mailok },
{ "with whitespace", 0 },
{ "with\twhitespace", 0 },
{ "with\nwhitespace", 0 },
{ "with.whitespace ", 0 },
{ "with.whitespace\t", 0 },
{ "with.whitespace\n", 0 },
{ "with\\ whitespace", 0 },
{ "with\\\twhitespace", 0 },
{ "with\\\nwhitespace", 0 },
{ "with.whitespace\\ ", 0 },
{ "with.whitespace\\\t", 0 },
{ "with.whitespace\\\n", 0 },
};
/* Run test case *TEST with FUNC (named FUNCNAME) and report an error
if the result does not match the result flag at BIT. */
static void
one_test (const struct test_case *test, const char *funcname,
int (*func) (const char *), unsigned int bit)
{
int expected = (test->result & bit) != 0;
int actual = func (test->dn);
if (actual != expected)
{
support_record_failure ();
printf ("error: %s (\"%s\"): expected=%d, actual=%d\n",
funcname, test->dn, expected, actual);
}
}
/* Run 255 tests using all the bytes from 1 to 255, surround the byte
with the strings PREFIX and SUFFIX, and check that FUNC (named
FUNCNAME) accepts only those bytes listed in ACCEPTED. */
static void
one_char (const char *prefix, const char *accepted, const char *suffix,
const char *funcname, int (*func) (const char *))
{
for (int ch = 1; ch <= 255; ++ch)
{
char dn[1024];
snprintf (dn, sizeof (dn), "%s%c%s", prefix, ch, suffix);
int expected = strchr (accepted, ch) != NULL;
int actual = func (dn);
if (actual != expected)
{
support_record_failure ();
printf ("error: %s (\"%s\"): expected=%d, actual=%d\n",
funcname, dn, expected, actual);
}
}
}
#define LETTERSDIGITS \
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
#define PRINTABLE \
"!\"#$%&'()*+,/:;<=>?@[\\]^`{|}~"
static int
do_test (void)
{
for (const struct test_case *test = tests; test < array_end (tests); ++test)
{
if (test_verbose)
printf ("info: testing domain name [[[%s]]] (0x%x)\n",
test->dn, test->result);
one_test (test, "res_hnok", res_hnok, hnok);
one_test (test, "res_dnok", res_dnok, dnok);
one_test (test, "res_mailok", res_mailok, mailok);
one_test (test, "res_ownok", res_ownok, ownok);
}
one_char
("", LETTERSDIGITS "._", "", "res_hnok", res_hnok);
one_char
("middle",
LETTERSDIGITS ".-_\\", /* "middle\\suffix" == "middlesuffix", so good. */
"suffix", "res_hnok", res_hnok);
one_char
("middle",
LETTERSDIGITS ".-_" PRINTABLE,
"suffix.example", "res_mailok", res_mailok);
one_char
("mailbox.middle",
LETTERSDIGITS ".-_\\",
"suffix.example", "res_mailok", res_mailok);
return 0;
}
#include <support/test-driver.c>
|
