1 /* Tests for ns_name_pton.
2 Copyright (C) 2017-2023 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 <arpa/nameser.h>
20 #include <array_length.h>
21 #include <stdbool.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <support/check.h>
26 #include <support/support.h>
27 #include <support/test-driver.h>
28
29 /* Bits which indicate which functions are supposed to report
30 success. */
31 enum
32 {
33 hnok = 1,
34 dnok = 2,
35 mailok = 4,
36 ownok = 8,
37 allnomailok = hnok | dnok | ownok,
38 allok = hnok | dnok | mailok | ownok
39 };
40
41 /* A string of 60 characters. */
42 #define STRING60 "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz"
43
44 /* A string of 63 characters (maximum label length). */
45 #define STRING63 STRING60 "zzz"
46
47 /* A string of 60 bytes (non-ASCII). */
48 #define STRING60OCT \
49 "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
50 "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
51 "\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377\377" \
52 "\377\377\377\377\377\377\377\377\377"
53
54 /* A string of 63 bytes (non-ASCII). */
55 #define STRING63OCT STRING60OCT "\377\377\377"
56
57 /* A string of 60 bytes (non-ASCII, quoted decimal). */
58 #define STRING60DEC \
59 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
60 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
61 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
62 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
63 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255" \
64 "\\255\\255\\255\\255\\255\\255\\255\\255\\255\\255"
65
66 /* A string of 63 bytes (non-ASCII, quoted decimal). */
67 #define STRING63DEC STRING60DEC "\\255\\255\\255"
68
69 /* Combines a test name with the expected results. */
70 struct test_case
71 {
72 const char *dn;
73 const char *back; /* Expected test result converted using ns_name_ntop. */
74 bool fully_qualified; /* True if the domain name has a trailing dot. */
75 };
76
77 static const struct test_case tests[] =
78 {
79 { "", ".", false },
80 { ".", ".", true },
81 { "..", NULL, },
82 { "www", "www", false },
83 { "www.", "www", true },
84 { "www\\.", "www\\.", false },
85 { ".www", NULL, },
86 { ".www\\.", NULL, },
87 { "example.com", "example.com", false },
88 { "example.com.", "example.com", true },
89 { ".example.com", NULL, },
90 { ".example.com.", NULL, },
91 { "example\\.com", "example\\.com", false },
92 { "example\\.com.", "example\\.com", true },
93 { "example..", NULL, },
94 { "example..com", NULL, },
95 { "example..com", NULL, },
96 { "\\0", NULL, },
97 { "\\00", NULL, },
98 { "\\000", "\\000", false },
99 { "\\1", NULL, },
100 { "\\01", NULL, },
101 { "\\001", "\\001", false },
102 { "\\1x", NULL, },
103 { "\\01x", NULL, },
104 { "\\001x", "\\001x", false },
105 { "\\256", NULL, },
106 { "\\0641", "\\@1", false },
107 { "\\0011", "\\0011", false },
108 { STRING63, STRING63, false },
109 { STRING63 ".", STRING63, true },
110 { STRING63 "z", NULL, },
111 { STRING63 "\\.", NULL, },
112 { STRING60 "zz\\.", STRING60 "zz\\.", false },
113 { STRING60 "zz\\..", STRING60 "zz\\.", true },
114 { STRING63 "." STRING63 "." STRING63 "." STRING60 "z",
115 STRING63 "." STRING63 "." STRING63 "." STRING60 "z", false },
116 { STRING63 "." STRING63 "." STRING63 "." STRING60 "z.",
117 STRING63 "." STRING63 "." STRING63 "." STRING60 "z", true },
118 { STRING63 "." STRING63 "." STRING63 "." STRING60 "zz", NULL, },
119 { STRING63 "." STRING63 "." STRING63 "." STRING60 "zzz", NULL, },
120 { STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT "\377",
121 STRING63DEC "." STRING63DEC "." STRING63DEC "." STRING60DEC "\\255",
122 false },
123 { STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT "\377.",
124 STRING63DEC "." STRING63DEC "." STRING63DEC "." STRING60DEC "\\255",
125 true },
126 { STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT
127 "\377\377", NULL, },
128 { STRING63OCT "." STRING63OCT "." STRING63OCT "." STRING60OCT
129 "\377\377\377", NULL, },
130 { "\\", NULL, },
131 { "\\\\", "\\\\", false },
132 { "\\\\.", "\\\\", true },
133 { "\\\\\\", NULL, },
134 { "a\\", NULL, },
135 { "a.\\", NULL, },
136 { "a.b\\", NULL, },
137 };
138
139 static int
140 do_test (void)
141 {
142 unsigned char *wire = xmalloc (NS_MAXCDNAME);
143 char *text = xmalloc (NS_MAXDNAME);
144 for (const struct test_case *test = tests; test < array_end (tests); ++test)
145 {
146 if (test_verbose)
147 printf ("info: testing domain name [[[%s]]]\n", test->dn);
148 int ret = ns_name_pton (test->dn, wire, NS_MAXCDNAME);
149 if (ret == -1)
150 {
151 if (test->back != NULL)
152 {
153 support_record_failure ();
154 printf ("error: unexpected decoding failure for [[%s]]\n",
155 test->dn);
156 }
157 /* Otherwise, we have an expected decoding failure. */
158 continue;
159 }
160
161 if (ret < -1 || ret > 1)
162 {
163 support_record_failure ();
164 printf ("error: invalid return value %d for [[%s]]\n",
165 ret, test->dn);
166 continue;
167 }
168
169 int ret2 = ns_name_ntop (wire, text, NS_MAXDNAME);
170
171 if (ret2 < 0)
172 {
173 support_record_failure ();
174 printf ("error: failure to convert back [[%s]]\n", test->dn);
175 }
176
177 if (test->back == NULL)
178 {
179 support_record_failure ();
180 printf ("error: unexpected success converting [[%s]]\n", test->dn);
181 if (ret2 >= 1)
182 printf ("error: result converts back to [[%s]]\n", test->dn);
183 continue;
184 }
185
186 if (strcmp (text, test->back) != 0)
187 {
188 support_record_failure ();
189 printf ("error: back-conversion of [[%s]] did not match\n",
190 test->dn);
191 printf ("error: expected: [[%s]]\n", test->back);
192 printf ("error: actual: [[%s]]\n", text);
193 }
194
195 if (ret != test->fully_qualified)
196 {
197 support_record_failure ();
198 printf ("error: invalid fully-qualified status for [[%s]]\n",
199 test->dn);
200 printf ("error: expected: %d\n", (int) test->fully_qualified);
201 printf ("error: actual: %d\n", ret);
202 }
203 }
204
205 free (text);
206 free (wire);
207 return 0;
208 }
209
210 #include <support/test-driver.c>