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
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2014 Lennart Poettering
systemd 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.
systemd 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 systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "dns-domain.h"
#include "macro.h"
#include "string-util.h"
static void test_dns_label_unescape_one(const char *what, const char *expect, size_t buffer_sz, int ret) {
char buffer[buffer_sz];
int r;
r = dns_label_unescape(&what, buffer, buffer_sz);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq(buffer, expect));
}
static void test_dns_label_unescape(void) {
test_dns_label_unescape_one("hallo", "hallo", 6, 5);
test_dns_label_unescape_one("hallo", "hallo", 4, -ENOSPC);
test_dns_label_unescape_one("", "", 10, 0);
test_dns_label_unescape_one("hallo\\.foobar", "hallo.foobar", 20, 12);
test_dns_label_unescape_one("hallo.foobar", "hallo", 10, 5);
test_dns_label_unescape_one("hallo\n.foobar", "hallo", 20, -EINVAL);
test_dns_label_unescape_one("hallo\\", "hallo", 20, -EINVAL);
test_dns_label_unescape_one("hallo\\032 ", "hallo ", 20, 7);
test_dns_label_unescape_one(".", "", 20, 0);
test_dns_label_unescape_one("..", "", 20, -EINVAL);
test_dns_label_unescape_one(".foobar", "", 20, -EINVAL);
test_dns_label_unescape_one("foobar.", "foobar", 20, 6);
}
static void test_dns_label_unescape_suffix_one(const char *what, const char *expect1, const char *expect2, size_t buffer_sz, int ret1, int ret2) {
char buffer[buffer_sz];
const char *label;
int r;
label = what + strlen(what);
r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
assert_se(r == ret1);
if (r >= 0)
assert_se(streq(buffer, expect1));
r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
assert_se(r == ret2);
if (r >= 0)
assert_se(streq(buffer, expect2));
}
static void test_dns_label_unescape_suffix(void) {
test_dns_label_unescape_suffix_one("hallo", "hallo", "", 6, 5, 0);
test_dns_label_unescape_suffix_one("hallo", "hallo", "", 4, -ENOSPC, -ENOSPC);
test_dns_label_unescape_suffix_one("", "", "", 10, 0, 0);
test_dns_label_unescape_suffix_one("hallo\\.foobar", "hallo.foobar", "", 20, 12, 0);
test_dns_label_unescape_suffix_one("hallo.foobar", "foobar", "hallo", 10, 6, 5);
test_dns_label_unescape_suffix_one("hallo.foobar\n", "foobar", "foobar", 20, -EINVAL, -EINVAL);
test_dns_label_unescape_suffix_one("hallo\\", "hallo", "hallo", 20, -EINVAL, -EINVAL);
test_dns_label_unescape_suffix_one("hallo\\032 ", "hallo ", "", 20, 7, 0);
test_dns_label_unescape_suffix_one(".", "", "", 20, 0, 0);
test_dns_label_unescape_suffix_one("..", "", "", 20, 0, 0);
test_dns_label_unescape_suffix_one(".foobar", "foobar", "", 20, 6, -EINVAL);
test_dns_label_unescape_suffix_one("foobar.", "", "foobar", 20, 0, 6);
test_dns_label_unescape_suffix_one("foo\\\\bar", "foo\\bar", "", 20, 7, 0);
test_dns_label_unescape_suffix_one("foo.bar", "bar", "foo", 20, 3, 3);
test_dns_label_unescape_suffix_one("foo..bar", "bar", "", 20, 3, -EINVAL);
test_dns_label_unescape_suffix_one("foo...bar", "bar", "", 20, 3, -EINVAL);
test_dns_label_unescape_suffix_one("foo\\.bar", "foo.bar", "", 20, 7, 0);
test_dns_label_unescape_suffix_one("foo\\\\.bar", "bar", "foo\\", 20, 3, 4);
test_dns_label_unescape_suffix_one("foo\\\\\\.bar", "foo\\.bar", "", 20, 8, 0);
}
static void test_dns_label_escape_one(const char *what, size_t l, const char *expect, int ret) {
_cleanup_free_ char *t = NULL;
int r;
r = dns_label_escape(what, l, &t);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq_ptr(expect, t));
}
static void test_dns_label_escape(void) {
test_dns_label_escape_one("", 0, "", 0);
test_dns_label_escape_one("hallo", 5, "hallo", 5);
test_dns_label_escape_one("hallo", 6, NULL, -EINVAL);
test_dns_label_escape_one("hallo hallo.foobar,waldi", 24, "hallo\\032hallo\\.foobar\\044waldi", 31);
}
static void test_dns_name_normalize_one(const char *what, const char *expect, int ret) {
_cleanup_free_ char *t = NULL;
int r;
r = dns_name_normalize(what, &t);
assert_se(r == ret);
if (r < 0)
return;
assert_se(streq_ptr(expect, t));
}
static void test_dns_name_normalize(void) {
test_dns_name_normalize_one("", "", 0);
test_dns_name_normalize_one("f", "f", 0);
test_dns_name_normalize_one("f.waldi", "f.waldi", 0);
test_dns_name_normalize_one("f \\032.waldi", "f\\032\\032.waldi", 0);
test_dns_name_normalize_one("\\000", NULL, -EINVAL);
test_dns_name_normalize_one("..", NULL, -EINVAL);
test_dns_name_normalize_one(".foobar", NULL, -EINVAL);
test_dns_name_normalize_one("foobar.", "foobar", 0);
test_dns_name_normalize_one(".", "", 0);
}
static void test_dns_name_equal_one(const char *a, const char *b, int ret) {
int r;
r = dns_name_equal(a, b);
assert_se(r == ret);
r = dns_name_equal(b, a);
assert_se(r == ret);
}
static void test_dns_name_equal(void) {
test_dns_name_equal_one("", "", true);
test_dns_name_equal_one("x", "x", true);
test_dns_name_equal_one("x", "x.", true);
test_dns_name_equal_one("abc.def", "abc.def", true);
test_dns_name_equal_one("abc.def", "ABC.def", true);
test_dns_name_equal_one("abc.def", "CBA.def", false);
test_dns_name_equal_one("", "xxx", false);
test_dns_name_equal_one("ab", "a", false);
test_dns_name_equal_one("\\000", "xxxx", -EINVAL);
test_dns_name_equal_one(".", "", true);
test_dns_name_equal_one(".", ".", true);
test_dns_name_equal_one("..", "..", -EINVAL);
}
static void test_dns_name_between_one(const char *a, const char *b, const char *c, int ret) {
int r;
r = dns_name_between(a, b, c);
assert_se(r == ret);
r = dns_name_between(c, b, a);
if (ret >= 0)
assert_se(r == 0);
else
assert_se(r == ret);
}
static void test_dns_name_between(void) {
/* see https://tools.ietf.org/html/rfc4034#section-6.1
Note that we use "\033.z.example" in stead of "\001.z.example" as we
consider the latter invalid */
test_dns_name_between_one("example", "a.example", "yljkjljk.a.example", true);
test_dns_name_between_one("a.example", "yljkjljk.a.example", "Z.a.example", true);
test_dns_name_between_one("yljkjljk.a.example", "Z.a.example", "zABC.a.EXAMPLE", true);
test_dns_name_between_one("Z.a.example", "zABC.a.EXAMPLE", "z.example", true);
test_dns_name_between_one("zABC.a.EXAMPLE", "z.example", "\\033.z.example", true);
test_dns_name_between_one("z.example", "\\033.z.example", "*.z.example", true);
test_dns_name_between_one("\\033.z.example", "*.z.example", "\\200.z.example", true);
test_dns_name_between_one("*.z.example", "\\200.z.example", "example", true);
test_dns_name_between_one("\\200.z.example", "example", "a.example", true);
test_dns_name_between_one("example", "a.example", "example", -EINVAL);
test_dns_name_between_one("example", "example", "yljkjljk.a.example", false);
test_dns_name_between_one("example", "yljkjljk.a.example", "yljkjljk.a.example", false);
}
static void test_dns_name_endswith_one(const char *a, const char *b, int ret) {
assert_se(dns_name_endswith(a, b) == ret);
}
static void test_dns_name_endswith(void) {
test_dns_name_endswith_one("", "", true);
test_dns_name_endswith_one("", "xxx", false);
test_dns_name_endswith_one("xxx", "", true);
test_dns_name_endswith_one("x", "x", true);
test_dns_name_endswith_one("x", "y", false);
test_dns_name_endswith_one("x.y", "y", true);
test_dns_name_endswith_one("x.y", "Y", true);
test_dns_name_endswith_one("x.y", "x", false);
test_dns_name_endswith_one("x.y.z", "Z", true);
test_dns_name_endswith_one("x.y.z", "y.Z", true);
test_dns_name_endswith_one("x.y.z", "x.y.Z", true);
test_dns_name_endswith_one("x.y.z", "waldo", false);
test_dns_name_endswith_one("x.y.z.u.v.w", "y.z", false);
test_dns_name_endswith_one("x.y.z.u.v.w", "u.v.w", true);
test_dns_name_endswith_one("x.y\001.z", "waldo", -EINVAL);
}
static void test_dns_name_root(void) {
assert_se(dns_name_root("") == true);
assert_se(dns_name_root(".") == true);
assert_se(dns_name_root("xxx") == false);
assert_se(dns_name_root("xxx.") == false);
assert_se(dns_name_root("..") == -EINVAL);
}
static void test_dns_name_single_label(void) {
assert_se(dns_name_single_label("") == false);
assert_se(dns_name_single_label(".") == false);
assert_se(dns_name_single_label("..") == -EINVAL);
assert_se(dns_name_single_label("x") == true);
assert_se(dns_name_single_label("x.") == true);
assert_se(dns_name_single_label("xx.yy") == false);
}
static void test_dns_name_reverse_one(const char *address, const char *name) {
_cleanup_free_ char *p = NULL;
union in_addr_union a, b = {};
int familya, familyb;
assert_se(in_addr_from_string_auto(address, &familya, &a) >= 0);
assert_se(dns_name_reverse(familya, &a, &p) >= 0);
assert_se(streq(p, name));
assert_se(dns_name_address(p, &familyb, &b) > 0);
assert_se(familya == familyb);
assert_se(in_addr_equal(familya, &a, &b));
}
static void test_dns_name_reverse(void) {
test_dns_name_reverse_one("47.11.8.15", "15.8.11.47.in-addr.arpa");
test_dns_name_reverse_one("fe80::47", "7.4.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.e.f.ip6.arpa");
test_dns_name_reverse_one("127.0.0.1", "1.0.0.127.in-addr.arpa");
test_dns_name_reverse_one("::1", "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa");
}
static void test_dns_name_concat_one(const char *a, const char *b, int r, const char *result) {
_cleanup_free_ char *p = NULL;
assert_se(dns_name_concat(a, b, &p) == r);
assert_se(streq_ptr(p, result));
}
static void test_dns_name_concat(void) {
test_dns_name_concat_one("foo", "bar", 0, "foo.bar");
test_dns_name_concat_one("foo.foo", "bar.bar", 0, "foo.foo.bar.bar");
test_dns_name_concat_one("foo", NULL, 0, "foo");
test_dns_name_concat_one("foo.", "bar.", 0, "foo.bar");
}
static void test_dns_name_is_valid_one(const char *s, int ret) {
assert_se(dns_name_is_valid(s) == ret);
}
static void test_dns_name_is_valid(void) {
test_dns_name_is_valid_one("foo", 1);
test_dns_name_is_valid_one("foo.", 1);
test_dns_name_is_valid_one("Foo", 1);
test_dns_name_is_valid_one("foo.bar", 1);
test_dns_name_is_valid_one("foo.bar.baz", 1);
test_dns_name_is_valid_one("", 1);
test_dns_name_is_valid_one("foo..bar", 0);
test_dns_name_is_valid_one(".foo.bar", 0);
test_dns_name_is_valid_one("foo.bar.", 1);
test_dns_name_is_valid_one("\\zbar", 0);
test_dns_name_is_valid_one("ä", 1);
test_dns_name_is_valid_one("\n", 0);
}
int main(int argc, char *argv[]) {
test_dns_label_unescape();
test_dns_label_unescape_suffix();
test_dns_label_escape();
test_dns_name_normalize();
test_dns_name_equal();
test_dns_name_endswith();
test_dns_name_between();
test_dns_name_root();
test_dns_name_single_label();
test_dns_name_reverse();
test_dns_name_concat();
test_dns_name_is_valid();
return 0;
}
|
