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shared: normalize the root domain to "." rather than ""
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1/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3/***
4 This file is part of systemd.
5
6 Copyright 2014 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
b5efdb8a 22#include "alloc-util.h"
4ad7f276 23#include "dns-domain.h"
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24#include "macro.h"
25#include "string-util.h"
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26
27static void test_dns_label_unescape_one(const char *what, const char *expect, size_t buffer_sz, int ret) {
28 char buffer[buffer_sz];
29 int r;
30
31 r = dns_label_unescape(&what, buffer, buffer_sz);
32 assert_se(r == ret);
33
34 if (r < 0)
35 return;
36
37 assert_se(streq(buffer, expect));
38}
39
40static void test_dns_label_unescape(void) {
41 test_dns_label_unescape_one("hallo", "hallo", 6, 5);
37ade128 42 test_dns_label_unescape_one("hallo", "hallo", 4, -ENOBUFS);
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43 test_dns_label_unescape_one("", "", 10, 0);
44 test_dns_label_unescape_one("hallo\\.foobar", "hallo.foobar", 20, 12);
45 test_dns_label_unescape_one("hallo.foobar", "hallo", 10, 5);
46 test_dns_label_unescape_one("hallo\n.foobar", "hallo", 20, -EINVAL);
47 test_dns_label_unescape_one("hallo\\", "hallo", 20, -EINVAL);
48 test_dns_label_unescape_one("hallo\\032 ", "hallo ", 20, 7);
49 test_dns_label_unescape_one(".", "", 20, 0);
50 test_dns_label_unescape_one("..", "", 20, -EINVAL);
51 test_dns_label_unescape_one(".foobar", "", 20, -EINVAL);
52 test_dns_label_unescape_one("foobar.", "foobar", 20, 6);
53}
54
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55static void test_dns_name_to_wire_format_one(const char *what, const char *expect, size_t buffer_sz, int ret) {
56 uint8_t buffer[buffer_sz];
57 int r;
58
3cd03457 59 r = dns_name_to_wire_format(what, buffer, buffer_sz, false);
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60 assert_se(r == ret);
61
62 if (r < 0)
63 return;
64
65 assert_se(!memcmp(buffer, expect, r));
66}
67
68static void test_dns_name_to_wire_format(void) {
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69 static const char out0[] = { 0 };
70 static const char out1[] = { 3, 'f', 'o', 'o', 0 };
71 static const char out2[] = { 5, 'h', 'a', 'l', 'l', 'o', 3, 'f', 'o', 'o', 3, 'b', 'a', 'r', 0 };
72 static const char out3[] = { 4, ' ', 'f', 'o', 'o', 3, 'b', 'a', 'r', 0 };
73 static const char out4[] = { 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
74 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
75 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
76 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
77 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
78 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
79 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
80 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
81 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
82 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
83 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
84 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
85 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
86 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
87 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
88 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
89 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
90 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
91 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
92 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
93 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
94 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
95 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
96 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
97 9, 'a', '1', '2', '3', '4', '5', '6', '7', '8',
98 3, 'a', '1', '2', 0 };
54adabf7 99
c6cefd13 100 test_dns_name_to_wire_format_one("", out0, sizeof(out0), sizeof(out0));
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101
102 test_dns_name_to_wire_format_one("foo", out1, sizeof(out1), sizeof(out1));
103 test_dns_name_to_wire_format_one("foo", out1, sizeof(out1) + 1, sizeof(out1));
104 test_dns_name_to_wire_format_one("foo", out1, sizeof(out1) - 1, -ENOBUFS);
105
106 test_dns_name_to_wire_format_one("hallo.foo.bar", out2, sizeof(out2), sizeof(out2));
107 test_dns_name_to_wire_format_one("hallo.foo..bar", NULL, 32, -EINVAL);
108
109 test_dns_name_to_wire_format_one("\\032foo.bar", out3, sizeof(out3), sizeof(out3));
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110
111 test_dns_name_to_wire_format_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a123", NULL, 500, -EINVAL);
112 test_dns_name_to_wire_format_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12", out4, sizeof(out4), sizeof(out4));
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113}
114
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115static void test_dns_label_unescape_suffix_one(const char *what, const char *expect1, const char *expect2, size_t buffer_sz, int ret1, int ret2) {
116 char buffer[buffer_sz];
117 const char *label;
118 int r;
119
120 label = what + strlen(what);
121
122 r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
123 assert_se(r == ret1);
124 if (r >= 0)
125 assert_se(streq(buffer, expect1));
126
127 r = dns_label_unescape_suffix(what, &label, buffer, buffer_sz);
128 assert_se(r == ret2);
129 if (r >= 0)
130 assert_se(streq(buffer, expect2));
131}
132
133static void test_dns_label_unescape_suffix(void) {
134 test_dns_label_unescape_suffix_one("hallo", "hallo", "", 6, 5, 0);
37ade128 135 test_dns_label_unescape_suffix_one("hallo", "hallo", "", 4, -ENOBUFS, -ENOBUFS);
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136 test_dns_label_unescape_suffix_one("", "", "", 10, 0, 0);
137 test_dns_label_unescape_suffix_one("hallo\\.foobar", "hallo.foobar", "", 20, 12, 0);
138 test_dns_label_unescape_suffix_one("hallo.foobar", "foobar", "hallo", 10, 6, 5);
139 test_dns_label_unescape_suffix_one("hallo.foobar\n", "foobar", "foobar", 20, -EINVAL, -EINVAL);
140 test_dns_label_unescape_suffix_one("hallo\\", "hallo", "hallo", 20, -EINVAL, -EINVAL);
141 test_dns_label_unescape_suffix_one("hallo\\032 ", "hallo ", "", 20, 7, 0);
142 test_dns_label_unescape_suffix_one(".", "", "", 20, 0, 0);
56512859 143 test_dns_label_unescape_suffix_one("..", "", "", 20, 0, -EINVAL);
642900d3 144 test_dns_label_unescape_suffix_one(".foobar", "foobar", "", 20, 6, -EINVAL);
56512859 145 test_dns_label_unescape_suffix_one("foobar.", "foobar", "", 20, 6, 0);
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146 test_dns_label_unescape_suffix_one("foo\\\\bar", "foo\\bar", "", 20, 7, 0);
147 test_dns_label_unescape_suffix_one("foo.bar", "bar", "foo", 20, 3, 3);
148 test_dns_label_unescape_suffix_one("foo..bar", "bar", "", 20, 3, -EINVAL);
149 test_dns_label_unescape_suffix_one("foo...bar", "bar", "", 20, 3, -EINVAL);
150 test_dns_label_unescape_suffix_one("foo\\.bar", "foo.bar", "", 20, 7, 0);
151 test_dns_label_unescape_suffix_one("foo\\\\.bar", "bar", "foo\\", 20, 3, 4);
152 test_dns_label_unescape_suffix_one("foo\\\\\\.bar", "foo\\.bar", "", 20, 8, 0);
153}
154
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155static void test_dns_label_escape_one(const char *what, size_t l, const char *expect, int ret) {
156 _cleanup_free_ char *t = NULL;
157 int r;
158
422baca0 159 r = dns_label_escape_new(what, l, &t);
0c0cdb06 160 assert_se(r == ret);
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161
162 if (r < 0)
163 return;
164
165 assert_se(streq_ptr(expect, t));
166}
167
168static void test_dns_label_escape(void) {
3b37fa73 169 test_dns_label_escape_one("", 0, NULL, -EINVAL);
74b2466e 170 test_dns_label_escape_one("hallo", 5, "hallo", 5);
c7feab76 171 test_dns_label_escape_one("hallo", 6, "hallo\\000", 9);
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172 test_dns_label_escape_one("hallo hallo.foobar,waldi", 24, "hallo\\032hallo\\.foobar\\044waldi", 31);
173}
174
175static void test_dns_name_normalize_one(const char *what, const char *expect, int ret) {
176 _cleanup_free_ char *t = NULL;
177 int r;
178
179 r = dns_name_normalize(what, &t);
180 assert_se(r == ret);
181
182 if (r < 0)
183 return;
184
185 assert_se(streq_ptr(expect, t));
186}
187
188static void test_dns_name_normalize(void) {
3a519900 189 test_dns_name_normalize_one("", ".", 0);
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190 test_dns_name_normalize_one("f", "f", 0);
191 test_dns_name_normalize_one("f.waldi", "f.waldi", 0);
192 test_dns_name_normalize_one("f \\032.waldi", "f\\032\\032.waldi", 0);
c7feab76 193 test_dns_name_normalize_one("\\000", "\\000", 0);
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194 test_dns_name_normalize_one("..", NULL, -EINVAL);
195 test_dns_name_normalize_one(".foobar", NULL, -EINVAL);
196 test_dns_name_normalize_one("foobar.", "foobar", 0);
3a519900 197 test_dns_name_normalize_one(".", ".", 0);
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198}
199
200static void test_dns_name_equal_one(const char *a, const char *b, int ret) {
201 int r;
202
203 r = dns_name_equal(a, b);
204 assert_se(r == ret);
205
206 r = dns_name_equal(b, a);
207 assert_se(r == ret);
208}
209
210static void test_dns_name_equal(void) {
211 test_dns_name_equal_one("", "", true);
212 test_dns_name_equal_one("x", "x", true);
213 test_dns_name_equal_one("x", "x.", true);
214 test_dns_name_equal_one("abc.def", "abc.def", true);
215 test_dns_name_equal_one("abc.def", "ABC.def", true);
216 test_dns_name_equal_one("abc.def", "CBA.def", false);
217 test_dns_name_equal_one("", "xxx", false);
218 test_dns_name_equal_one("ab", "a", false);
c7feab76 219 test_dns_name_equal_one("\\000", "\\000", true);
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220 test_dns_name_equal_one(".", "", true);
221 test_dns_name_equal_one(".", ".", true);
222 test_dns_name_equal_one("..", "..", -EINVAL);
223}
224
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TG
225static void test_dns_name_between_one(const char *a, const char *b, const char *c, int ret) {
226 int r;
227
228 r = dns_name_between(a, b, c);
229 assert_se(r == ret);
230
231 r = dns_name_between(c, b, a);
232 if (ret >= 0)
233 assert_se(r == 0);
234 else
235 assert_se(r == ret);
236}
237
238static void test_dns_name_between(void) {
239 /* see https://tools.ietf.org/html/rfc4034#section-6.1
240 Note that we use "\033.z.example" in stead of "\001.z.example" as we
241 consider the latter invalid */
242 test_dns_name_between_one("example", "a.example", "yljkjljk.a.example", true);
243 test_dns_name_between_one("a.example", "yljkjljk.a.example", "Z.a.example", true);
244 test_dns_name_between_one("yljkjljk.a.example", "Z.a.example", "zABC.a.EXAMPLE", true);
245 test_dns_name_between_one("Z.a.example", "zABC.a.EXAMPLE", "z.example", true);
246 test_dns_name_between_one("zABC.a.EXAMPLE", "z.example", "\\033.z.example", true);
247 test_dns_name_between_one("z.example", "\\033.z.example", "*.z.example", true);
248 test_dns_name_between_one("\\033.z.example", "*.z.example", "\\200.z.example", true);
249 test_dns_name_between_one("*.z.example", "\\200.z.example", "example", true);
250 test_dns_name_between_one("\\200.z.example", "example", "a.example", true);
251
252 test_dns_name_between_one("example", "a.example", "example", -EINVAL);
253 test_dns_name_between_one("example", "example", "yljkjljk.a.example", false);
254 test_dns_name_between_one("example", "yljkjljk.a.example", "yljkjljk.a.example", false);
255}
256
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257static void test_dns_name_endswith_one(const char *a, const char *b, int ret) {
258 assert_se(dns_name_endswith(a, b) == ret);
259}
260
261static void test_dns_name_endswith(void) {
262 test_dns_name_endswith_one("", "", true);
263 test_dns_name_endswith_one("", "xxx", false);
264 test_dns_name_endswith_one("xxx", "", true);
265 test_dns_name_endswith_one("x", "x", true);
266 test_dns_name_endswith_one("x", "y", false);
267 test_dns_name_endswith_one("x.y", "y", true);
268 test_dns_name_endswith_one("x.y", "Y", true);
269 test_dns_name_endswith_one("x.y", "x", false);
270 test_dns_name_endswith_one("x.y.z", "Z", true);
271 test_dns_name_endswith_one("x.y.z", "y.Z", true);
272 test_dns_name_endswith_one("x.y.z", "x.y.Z", true);
273 test_dns_name_endswith_one("x.y.z", "waldo", false);
274 test_dns_name_endswith_one("x.y.z.u.v.w", "y.z", false);
275 test_dns_name_endswith_one("x.y.z.u.v.w", "u.v.w", true);
276 test_dns_name_endswith_one("x.y\001.z", "waldo", -EINVAL);
277}
278
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279static void test_dns_name_startswith_one(const char *a, const char *b, int ret) {
280 assert_se(dns_name_startswith(a, b) == ret);
281}
282
283static void test_dns_name_startswith(void) {
284 test_dns_name_startswith_one("", "", true);
285 test_dns_name_startswith_one("", "xxx", false);
286 test_dns_name_startswith_one("xxx", "", true);
287 test_dns_name_startswith_one("x", "x", true);
288 test_dns_name_startswith_one("x", "y", false);
289 test_dns_name_startswith_one("x.y", "x.y", true);
290 test_dns_name_startswith_one("x.y", "y.x", false);
291 test_dns_name_startswith_one("x.y", "x", true);
292 test_dns_name_startswith_one("x.y", "X", true);
293 test_dns_name_startswith_one("x.y", "y", false);
294 test_dns_name_startswith_one("x.y", "", true);
295 test_dns_name_startswith_one("x.y", "X", true);
296}
297
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LP
298static void test_dns_name_is_root(void) {
299 assert_se(dns_name_is_root(""));
300 assert_se(dns_name_is_root("."));
301 assert_se(!dns_name_is_root("xxx"));
302 assert_se(!dns_name_is_root("xxx."));
303 assert_se(!dns_name_is_root(".."));
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304}
305
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306static void test_dns_name_is_single_label(void) {
307 assert_se(!dns_name_is_single_label(""));
308 assert_se(!dns_name_is_single_label("."));
309 assert_se(!dns_name_is_single_label(".."));
310 assert_se(dns_name_is_single_label("x"));
311 assert_se(dns_name_is_single_label("x."));
312 assert_se(!dns_name_is_single_label("xx.yy"));
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313}
314
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315static void test_dns_name_reverse_one(const char *address, const char *name) {
316 _cleanup_free_ char *p = NULL;
a7f7d1bd 317 union in_addr_union a, b = {};
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LP
318 int familya, familyb;
319
320 assert_se(in_addr_from_string_auto(address, &familya, &a) >= 0);
321 assert_se(dns_name_reverse(familya, &a, &p) >= 0);
322 assert_se(streq(p, name));
323 assert_se(dns_name_address(p, &familyb, &b) > 0);
324 assert_se(familya == familyb);
325 assert_se(in_addr_equal(familya, &a, &b));
326}
327
328static void test_dns_name_reverse(void) {
329 test_dns_name_reverse_one("47.11.8.15", "15.8.11.47.in-addr.arpa");
330 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");
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LP
331 test_dns_name_reverse_one("127.0.0.1", "1.0.0.127.in-addr.arpa");
332 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");
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LP
333}
334
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LP
335static void test_dns_name_concat_one(const char *a, const char *b, int r, const char *result) {
336 _cleanup_free_ char *p = NULL;
337
338 assert_se(dns_name_concat(a, b, &p) == r);
339 assert_se(streq_ptr(p, result));
340}
341
342static void test_dns_name_concat(void) {
3a519900
LP
343 test_dns_name_concat_one("", "", 0, ".");
344 test_dns_name_concat_one(".", "", 0, ".");
345 test_dns_name_concat_one("", ".", 0, ".");
346 test_dns_name_concat_one(".", ".", 0, ".");
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LP
347 test_dns_name_concat_one("foo", "bar", 0, "foo.bar");
348 test_dns_name_concat_one("foo.foo", "bar.bar", 0, "foo.foo.bar.bar");
349 test_dns_name_concat_one("foo", NULL, 0, "foo");
3a519900 350 test_dns_name_concat_one("foo", ".", 0, "foo");
9ca45586 351 test_dns_name_concat_one("foo.", "bar.", 0, "foo.bar");
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LP
352 test_dns_name_concat_one(NULL, NULL, 0, ".");
353 test_dns_name_concat_one(NULL, ".", 0, ".");
354 test_dns_name_concat_one(NULL, "foo", 0, "foo");
9ca45586
LP
355}
356
357static void test_dns_name_is_valid_one(const char *s, int ret) {
358 assert_se(dns_name_is_valid(s) == ret);
359}
360
361static void test_dns_name_is_valid(void) {
362 test_dns_name_is_valid_one("foo", 1);
363 test_dns_name_is_valid_one("foo.", 1);
364 test_dns_name_is_valid_one("Foo", 1);
365 test_dns_name_is_valid_one("foo.bar", 1);
366 test_dns_name_is_valid_one("foo.bar.baz", 1);
367 test_dns_name_is_valid_one("", 1);
368 test_dns_name_is_valid_one("foo..bar", 0);
369 test_dns_name_is_valid_one(".foo.bar", 0);
370 test_dns_name_is_valid_one("foo.bar.", 1);
371 test_dns_name_is_valid_one("\\zbar", 0);
372 test_dns_name_is_valid_one("ä", 1);
373 test_dns_name_is_valid_one("\n", 0);
1dfbf000
LP
374
375 /* 256 characters*/
376 test_dns_name_is_valid_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345", 0);
377
378 /* 255 characters*/
379 test_dns_name_is_valid_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a1234", 0);
380
381 /* 254 characters*/
382 test_dns_name_is_valid_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a123", 0);
383
384 /* 253 characters*/
385 test_dns_name_is_valid_one("a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12345678.a12", 1);
386
387 /* label of 64 chars length */
388 test_dns_name_is_valid_one("a123456789a123456789a123456789a123456789a123456789a123456789a123", 0);
389
390 /* label of 63 chars length */
391 test_dns_name_is_valid_one("a123456789a123456789a123456789a123456789a123456789a123456789a12", 1);
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392}
393
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394static void test_dns_service_name_is_valid(void) {
395 assert_se(dns_service_name_is_valid("Lennart's Compüter"));
396 assert_se(dns_service_name_is_valid("piff.paff"));
397
398 assert_se(!dns_service_name_is_valid(NULL));
399 assert_se(!dns_service_name_is_valid(""));
400 assert_se(!dns_service_name_is_valid("foo\nbar"));
401 assert_se(!dns_service_name_is_valid("foo\201bar"));
402 assert_se(!dns_service_name_is_valid("this is an overly long string that is certainly longer than 63 characters"));
403}
404
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405static void test_dns_srv_type_is_valid(void) {
406
407 assert_se(dns_srv_type_is_valid("_http._tcp"));
408 assert_se(dns_srv_type_is_valid("_foo-bar._tcp"));
409 assert_se(dns_srv_type_is_valid("_w._udp"));
410 assert_se(dns_srv_type_is_valid("_a800._tcp"));
411 assert_se(dns_srv_type_is_valid("_a-800._tcp"));
412
413 assert_se(!dns_srv_type_is_valid(NULL));
414 assert_se(!dns_srv_type_is_valid(""));
415 assert_se(!dns_srv_type_is_valid("x"));
416 assert_se(!dns_srv_type_is_valid("_foo"));
417 assert_se(!dns_srv_type_is_valid("_tcp"));
418 assert_se(!dns_srv_type_is_valid("_"));
419 assert_se(!dns_srv_type_is_valid("_foo."));
420 assert_se(!dns_srv_type_is_valid("_föo._tcp"));
421 assert_se(!dns_srv_type_is_valid("_f\no._tcp"));
422 assert_se(!dns_srv_type_is_valid("_800._tcp"));
423 assert_se(!dns_srv_type_is_valid("_-800._tcp"));
424 assert_se(!dns_srv_type_is_valid("_-foo._tcp"));
425 assert_se(!dns_srv_type_is_valid("_piep._foo._udp"));
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426}
427
428static void test_dns_service_join_one(const char *a, const char *b, const char *c, int r, const char *d) {
429 _cleanup_free_ char *x = NULL, *y = NULL, *z = NULL, *t = NULL;
430
431 assert_se(dns_service_join(a, b, c, &t) == r);
432 assert_se(streq_ptr(t, d));
433
434 if (r < 0)
435 return;
436
437 assert_se(dns_service_split(t, &x, &y, &z) >= 0);
438 assert_se(streq_ptr(a, x));
439 assert_se(streq_ptr(b, y));
3a519900 440 assert_se(dns_name_equal(c, z) > 0);
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441}
442
443static void test_dns_service_join(void) {
444 test_dns_service_join_one("", "", "", -EINVAL, NULL);
445 test_dns_service_join_one("", "_http._tcp", "", -EINVAL, NULL);
446 test_dns_service_join_one("", "_http._tcp", "foo", -EINVAL, NULL);
447 test_dns_service_join_one("foo", "", "foo", -EINVAL, NULL);
448 test_dns_service_join_one("foo", "foo", "foo", -EINVAL, NULL);
449
450 test_dns_service_join_one("foo", "_http._tcp", "", 0, "foo._http._tcp");
451 test_dns_service_join_one(NULL, "_http._tcp", "", 0, "_http._tcp");
452 test_dns_service_join_one("foo", "_http._tcp", "foo", 0, "foo._http._tcp.foo");
453 test_dns_service_join_one(NULL, "_http._tcp", "foo", 0, "_http._tcp.foo");
454 test_dns_service_join_one("Lennart's PC", "_pc._tcp", "foo.bar.com", 0, "Lennart\\039s\\032PC._pc._tcp.foo.bar.com");
455 test_dns_service_join_one(NULL, "_pc._tcp", "foo.bar.com", 0, "_pc._tcp.foo.bar.com");
456}
457
458static void test_dns_service_split_one(const char *joined, const char *a, const char *b, const char *c, int r) {
459 _cleanup_free_ char *x = NULL, *y = NULL, *z = NULL, *t = NULL;
460
461 assert_se(dns_service_split(joined, &x, &y, &z) == r);
462 assert_se(streq_ptr(x, a));
463 assert_se(streq_ptr(y, b));
464 assert_se(streq_ptr(z, c));
465
466 if (r < 0)
467 return;
468
469 if (y) {
470 assert_se(dns_service_join(x, y, z, &t) == 0);
3a519900 471 assert_se(dns_name_equal(joined, t) > 0);
0e8eedbb 472 } else
3a519900 473 assert_se(!x && dns_name_equal(z, joined) > 0);
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474}
475
476static void test_dns_service_split(void) {
3a519900 477 test_dns_service_split_one("", NULL, NULL, ".", 0);
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478 test_dns_service_split_one("foo", NULL, NULL, "foo", 0);
479 test_dns_service_split_one("foo.bar", NULL, NULL, "foo.bar", 0);
480 test_dns_service_split_one("_foo.bar", NULL, NULL, "_foo.bar", 0);
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481 test_dns_service_split_one("_foo._bar", NULL, "_foo._bar", ".", 0);
482 test_dns_service_split_one("_meh._foo._bar", "_meh", "_foo._bar", ".", 0);
0e8eedbb 483 test_dns_service_split_one("Wuff\\032Wuff._foo._bar.waldo.com", "Wuff Wuff", "_foo._bar", "waldo.com", 0);
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484}
485
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486static void test_dns_name_change_suffix_one(const char *name, const char *old_suffix, const char *new_suffix, int r, const char *result) {
487 _cleanup_free_ char *s = NULL;
488
489 assert_se(dns_name_change_suffix(name, old_suffix, new_suffix, &s) == r);
490 assert_se(streq_ptr(s, result));
491}
492
493static void test_dns_name_change_suffix(void) {
494 test_dns_name_change_suffix_one("foo.bar", "bar", "waldo", 1, "foo.waldo");
495 test_dns_name_change_suffix_one("foo.bar.waldi.quux", "foo.bar.waldi.quux", "piff.paff", 1, "piff.paff");
496 test_dns_name_change_suffix_one("foo.bar.waldi.quux", "bar.waldi.quux", "piff.paff", 1, "foo.piff.paff");
497 test_dns_name_change_suffix_one("foo.bar.waldi.quux", "waldi.quux", "piff.paff", 1, "foo.bar.piff.paff");
498 test_dns_name_change_suffix_one("foo.bar.waldi.quux", "quux", "piff.paff", 1, "foo.bar.waldi.piff.paff");
499 test_dns_name_change_suffix_one("foo.bar.waldi.quux", "", "piff.paff", 1, "foo.bar.waldi.quux.piff.paff");
500 test_dns_name_change_suffix_one("", "", "piff.paff", 1, "piff.paff");
3a519900 501 test_dns_name_change_suffix_one("", "", "", 1, ".");
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502 test_dns_name_change_suffix_one("a", "b", "c", 0, NULL);
503}
504
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505static void test_dns_name_suffix_one(const char *name, unsigned n_labels, const char *result, int ret) {
506 const char *p = NULL;
507
508 assert_se(ret == dns_name_suffix(name, n_labels, &p));
509 assert_se(streq_ptr(p, result));
510}
511
512static void test_dns_name_suffix(void) {
513 test_dns_name_suffix_one("foo.bar", 2, "foo.bar", 0);
514 test_dns_name_suffix_one("foo.bar", 1, "bar", 1);
515 test_dns_name_suffix_one("foo.bar", 0, "", 2);
516 test_dns_name_suffix_one("foo.bar", 3, NULL, -EINVAL);
517 test_dns_name_suffix_one("foo.bar", 4, NULL, -EINVAL);
518
519 test_dns_name_suffix_one("bar", 1, "bar", 0);
520 test_dns_name_suffix_one("bar", 0, "", 1);
521 test_dns_name_suffix_one("bar", 2, NULL, -EINVAL);
522 test_dns_name_suffix_one("bar", 3, NULL, -EINVAL);
523
524 test_dns_name_suffix_one("", 0, "", 0);
525 test_dns_name_suffix_one("", 1, NULL, -EINVAL);
526 test_dns_name_suffix_one("", 2, NULL, -EINVAL);
527}
528
529static void test_dns_name_count_labels_one(const char *name, int n) {
530 assert_se(dns_name_count_labels(name) == n);
531}
532
533static void test_dns_name_count_labels(void) {
534 test_dns_name_count_labels_one("foo.bar.quux.", 3);
535 test_dns_name_count_labels_one("foo.bar.quux", 3);
536 test_dns_name_count_labels_one("foo.bar.", 2);
537 test_dns_name_count_labels_one("foo.bar", 2);
538 test_dns_name_count_labels_one("foo.", 1);
539 test_dns_name_count_labels_one("foo", 1);
540 test_dns_name_count_labels_one("", 0);
541 test_dns_name_count_labels_one(".", 0);
542 test_dns_name_count_labels_one("..", -EINVAL);
543}
544
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545static void test_dns_name_equal_skip_one(const char *a, unsigned n_labels, const char *b, int ret) {
546 assert_se(dns_name_equal_skip(a, n_labels, b) == ret);
547}
548
549static void test_dns_name_equal_skip(void) {
550 test_dns_name_equal_skip_one("foo", 0, "bar", 0);
551 test_dns_name_equal_skip_one("foo", 0, "foo", 1);
552 test_dns_name_equal_skip_one("foo", 1, "foo", 0);
553 test_dns_name_equal_skip_one("foo", 2, "foo", 0);
554
555 test_dns_name_equal_skip_one("foo.bar", 0, "foo.bar", 1);
556 test_dns_name_equal_skip_one("foo.bar", 1, "foo.bar", 0);
557 test_dns_name_equal_skip_one("foo.bar", 2, "foo.bar", 0);
558 test_dns_name_equal_skip_one("foo.bar", 3, "foo.bar", 0);
559
560 test_dns_name_equal_skip_one("foo.bar", 0, "bar", 0);
561 test_dns_name_equal_skip_one("foo.bar", 1, "bar", 1);
562 test_dns_name_equal_skip_one("foo.bar", 2, "bar", 0);
563 test_dns_name_equal_skip_one("foo.bar", 3, "bar", 0);
564
565 test_dns_name_equal_skip_one("foo.bar", 0, "", 0);
566 test_dns_name_equal_skip_one("foo.bar", 1, "", 0);
567 test_dns_name_equal_skip_one("foo.bar", 2, "", 1);
568 test_dns_name_equal_skip_one("foo.bar", 3, "", 0);
569
570 test_dns_name_equal_skip_one("", 0, "", 1);
571 test_dns_name_equal_skip_one("", 1, "", 0);
572 test_dns_name_equal_skip_one("", 1, "foo", 0);
573 test_dns_name_equal_skip_one("", 2, "foo", 0);
574}
575
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576static void test_dns_name_compare_func(void) {
577 assert_se(dns_name_compare_func("", "") == 0);
578 assert_se(dns_name_compare_func("", ".") == 0);
579 assert_se(dns_name_compare_func(".", "") == 0);
580 assert_se(dns_name_compare_func("foo", "foo.") == 0);
581 assert_se(dns_name_compare_func("foo.", "foo") == 0);
582 assert_se(dns_name_compare_func("foo", "foo") == 0);
583 assert_se(dns_name_compare_func("foo.", "foo.") == 0);
584 assert_se(dns_name_compare_func("heise.de", "HEISE.DE.") == 0);
585
586 assert_se(dns_name_compare_func("de.", "heise.de") != 0);
587}
588
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589static void test_dns_name_common_suffix_one(const char *a, const char *b, const char *result) {
590 const char *c;
591
592 assert_se(dns_name_common_suffix(a, b, &c) >= 0);
593 assert_se(streq(c, result));
594}
595
596static void test_dns_name_common_suffix(void) {
597 test_dns_name_common_suffix_one("", "", "");
598 test_dns_name_common_suffix_one("foo", "", "");
599 test_dns_name_common_suffix_one("", "foo", "");
600 test_dns_name_common_suffix_one("foo", "bar", "");
601 test_dns_name_common_suffix_one("bar", "foo", "");
602 test_dns_name_common_suffix_one("foo", "foo", "foo");
603 test_dns_name_common_suffix_one("quux.foo", "foo", "foo");
604 test_dns_name_common_suffix_one("foo", "quux.foo", "foo");
605 test_dns_name_common_suffix_one("this.is.a.short.sentence", "this.is.another.short.sentence", "short.sentence");
606 test_dns_name_common_suffix_one("FOO.BAR", "tEST.bAR", "BAR");
607}
608
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609static void test_dns_name_apply_idna_one(const char *s, const char *result) {
610#ifdef HAVE_LIBIDN
611 _cleanup_free_ char *buf = NULL;
612 assert_se(dns_name_apply_idna(s, &buf) >= 0);
613 assert_se(dns_name_equal(buf, result) > 0);
614#endif
615}
616
617static void test_dns_name_apply_idna(void) {
618 test_dns_name_apply_idna_one("", "");
619 test_dns_name_apply_idna_one("foo", "foo");
620 test_dns_name_apply_idna_one("foo.", "foo");
621 test_dns_name_apply_idna_one("foo.bar", "foo.bar");
622 test_dns_name_apply_idna_one("foo.bar.", "foo.bar");
623 test_dns_name_apply_idna_one("föö", "xn--f-1gaa");
624 test_dns_name_apply_idna_one("föö.", "xn--f-1gaa");
625 test_dns_name_apply_idna_one("föö.bär", "xn--f-1gaa.xn--br-via");
626 test_dns_name_apply_idna_one("föö.bär.", "xn--f-1gaa.xn--br-via");
627}
628
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629int main(int argc, char *argv[]) {
630
631 test_dns_label_unescape();
642900d3 632 test_dns_label_unescape_suffix();
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633 test_dns_label_escape();
634 test_dns_name_normalize();
635 test_dns_name_equal();
636 test_dns_name_endswith();
eb241cdb 637 test_dns_name_startswith();
ae72b22c 638 test_dns_name_between();
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639 test_dns_name_is_root();
640 test_dns_name_is_single_label();
b914e211 641 test_dns_name_reverse();
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642 test_dns_name_concat();
643 test_dns_name_is_valid();
54adabf7 644 test_dns_name_to_wire_format();
0a49b6b6 645 test_dns_service_name_is_valid();
7e8131e9 646 test_dns_srv_type_is_valid();
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647 test_dns_service_join();
648 test_dns_service_split();
58db254a 649 test_dns_name_change_suffix();
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650 test_dns_name_suffix();
651 test_dns_name_count_labels();
db5b0e92 652 test_dns_name_equal_skip();
56512859 653 test_dns_name_compare_func();
b9282bc1 654 test_dns_name_common_suffix();
0cf40f55 655 test_dns_name_apply_idna();
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656
657 return 0;
658}