1 /*
2 * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <openssl/crypto.h>
11 #include <string.h>
12
13 #include "crypto/punycode.h"
14 #include "internal/nelem.h"
15 #include "testutil.h"
16
17
18 static const struct puny_test {
19 unsigned int raw[50];
20 const char *encoded;
21 } puny_cases[] = {
22 /* Test cases from RFC 3492 */
23 { /* Arabic (Egyptian) */
24 { 0x0644, 0x064A, 0x0647, 0x0645, 0x0627, 0x0628, 0x062A, 0x0643, 0x0644,
25 0x0645, 0x0648, 0x0634, 0x0639, 0x0631, 0x0628, 0x064A, 0x061F
26 },
27 "egbpdaj6bu4bxfgehfvwxn"
28 },
29 { /* Chinese (simplified) */
30 { 0x4ED6, 0x4EEC, 0x4E3A, 0x4EC0, 0x4E48, 0x4E0D, 0x8BF4, 0x4E2D, 0x6587
31 },
32 "ihqwcrb4cv8a8dqg056pqjye"
33 },
34 { /* Chinese (traditional) */
35 { 0x4ED6, 0x5011, 0x7232, 0x4EC0, 0x9EBD, 0x4E0D, 0x8AAA, 0x4E2D, 0x6587
36 },
37 "ihqwctvzc91f659drss3x8bo0yb"
38 },
39 { /* Czech: Pro<ccaron>prost<ecaron>nemluv<iacute><ccaron>esky */
40 { 0x0050, 0x0072, 0x006F, 0x010D, 0x0070, 0x0072, 0x006F, 0x0073, 0x0074,
41 0x011B, 0x006E, 0x0065, 0x006D, 0x006C, 0x0075, 0x0076, 0x00ED, 0x010D,
42 0x0065, 0x0073, 0x006B, 0x0079
43 },
44 "Proprostnemluvesky-uyb24dma41a"
45 },
46 { /* Hebrew */
47 { 0x05DC, 0x05DE, 0x05D4, 0x05D4, 0x05DD, 0x05E4, 0x05E9, 0x05D5, 0x05D8,
48 0x05DC, 0x05D0, 0x05DE, 0x05D3, 0x05D1, 0x05E8, 0x05D9, 0x05DD, 0x05E2,
49 0x05D1, 0x05E8, 0x05D9, 0x05EA
50 },
51 "4dbcagdahymbxekheh6e0a7fei0b"
52 },
53 { /* Hindi (Devanagari) */
54 { 0x092F, 0x0939, 0x0932, 0x094B, 0x0917, 0x0939, 0x093F, 0x0928, 0x094D,
55 0x0926, 0x0940, 0x0915, 0x094D, 0x092F, 0x094B, 0x0902, 0x0928, 0x0939,
56 0x0940, 0x0902, 0x092C, 0x094B, 0x0932, 0x0938, 0x0915, 0x0924, 0x0947,
57 0x0939, 0x0948, 0x0902
58 },
59 "i1baa7eci9glrd9b2ae1bj0hfcgg6iyaf8o0a1dig0cd"
60 },
61 { /* Japanese (kanji and hiragana) */
62 { 0x306A, 0x305C, 0x307F, 0x3093, 0x306A, 0x65E5, 0x672C, 0x8A9E, 0x3092,
63 0x8A71, 0x3057, 0x3066, 0x304F, 0x308C, 0x306A, 0x3044, 0x306E, 0x304B
64 },
65 "n8jok5ay5dzabd5bym9f0cm5685rrjetr6pdxa"
66 },
67 { /* Korean (Hangul syllables) */
68 { 0xC138, 0xACC4, 0xC758, 0xBAA8, 0xB4E0, 0xC0AC, 0xB78C, 0xB4E4, 0xC774,
69 0xD55C, 0xAD6D, 0xC5B4, 0xB97C, 0xC774, 0xD574, 0xD55C, 0xB2E4, 0xBA74,
70 0xC5BC, 0xB9C8, 0xB098, 0xC88B, 0xC744, 0xAE4C
71 },
72 "989aomsvi5e83db1d2a355cv1e0vak1dwrv93d5xbh15a0dt30a5jpsd879ccm6fea98c"
73 },
74 { /* Russian (Cyrillic) */
75 { 0x043F, 0x043E, 0x0447, 0x0435, 0x043C, 0x0443, 0x0436, 0x0435, 0x043E,
76 0x043D, 0x0438, 0x043D, 0x0435, 0x0433, 0x043E, 0x0432, 0x043E, 0x0440,
77 0x044F, 0x0442, 0x043F, 0x043E, 0x0440, 0x0443, 0x0441, 0x0441, 0x043A,
78 0x0438
79 },
80 "b1abfaaepdrnnbgefbaDotcwatmq2g4l"
81 },
82 { /* Spanish */
83 { 0x0050, 0x006F, 0x0072, 0x0071, 0x0075, 0x00E9, 0x006E, 0x006F, 0x0070,
84 0x0075, 0x0065, 0x0064, 0x0065, 0x006E, 0x0073, 0x0069, 0x006D, 0x0070,
85 0x006C, 0x0065, 0x006D, 0x0065, 0x006E, 0x0074, 0x0065, 0x0068, 0x0061,
86 0x0062, 0x006C, 0x0061, 0x0072, 0x0065, 0x006E, 0x0045, 0x0073, 0x0070,
87 0x0061, 0x00F1, 0x006F, 0x006C
88 },
89 "PorqunopuedensimplementehablarenEspaol-fmd56a"
90 },
91 { /* Vietnamese */
92 { 0x0054, 0x1EA1, 0x0069, 0x0073, 0x0061, 0x006F, 0x0068, 0x1ECD, 0x006B,
93 0x0068, 0x00F4, 0x006E, 0x0067, 0x0074, 0x0068, 0x1EC3, 0x0063, 0x0068,
94 0x1EC9, 0x006E, 0x00F3, 0x0069, 0x0074, 0x0069, 0x1EBF, 0x006E, 0x0067,
95 0x0056, 0x0069, 0x1EC7, 0x0074
96 },
97 "TisaohkhngthchnitingVit-kjcr8268qyxafd2f1b9g"
98 },
99 { /* Japanese: 3<nen>B<gumi><kinpachi><sensei> */
100 { 0x0033, 0x5E74, 0x0042, 0x7D44, 0x91D1, 0x516B, 0x5148, 0x751F
101 },
102 "3B-ww4c5e180e575a65lsy2b"
103 },
104 { /* Japanese: <amuro><namie>-with-SUPER-MONKEYS */
105 { 0x5B89, 0x5BA4, 0x5948, 0x7F8E, 0x6075, 0x002D, 0x0077, 0x0069, 0x0074,
106 0x0068, 0x002D, 0x0053, 0x0055, 0x0050, 0x0045, 0x0052, 0x002D, 0x004D,
107 0x004F, 0x004E, 0x004B, 0x0045, 0x0059, 0x0053
108 },
109 "-with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n"
110 },
111 { /* Japanese: Hello-Another-Way-<sorezore><no><basho> */
112 { 0x0048, 0x0065, 0x006C, 0x006C, 0x006F, 0x002D, 0x0041, 0x006E, 0x006F,
113 0x0074, 0x0068, 0x0065, 0x0072, 0x002D, 0x0057, 0x0061, 0x0079, 0x002D,
114 0x305D, 0x308C, 0x305E, 0x308C, 0x306E, 0x5834, 0x6240
115 },
116 "Hello-Another-Way--fc4qua05auwb3674vfr0b"
117 },
118 { /* Japanese: <hitotsu><yane><no><shita>2 */
119 { 0x3072, 0x3068, 0x3064, 0x5C4B, 0x6839, 0x306E, 0x4E0B, 0x0032
120 },
121 "2-u9tlzr9756bt3uc0v"
122 },
123 { /* Japanese: Maji<de>Koi<suru>5<byou><mae> */
124 { 0x004D, 0x0061, 0x006A, 0x0069, 0x3067, 0x004B, 0x006F, 0x0069, 0x3059,
125 0x308B, 0x0035, 0x79D2, 0x524D
126 },
127 "MajiKoi5-783gue6qz075azm5e"
128 },
129 { /* Japanese: <pafii>de<runba> */
130 { 0x30D1, 0x30D5, 0x30A3, 0x30FC, 0x0064, 0x0065, 0x30EB, 0x30F3, 0x30D0
131 },
132 "de-jg4avhby1noc0d"
133 },
134 { /* Japanese: <sono><supiido><de> */
135 { 0x305D, 0x306E, 0x30B9, 0x30D4, 0x30FC, 0x30C9, 0x3067
136 },
137 "d9juau41awczczp"
138 },
139 { /* -> $1.00 <- */
140 { 0x002D, 0x003E, 0x0020, 0x0024, 0x0031, 0x002E, 0x0030, 0x0030, 0x0020,
141 0x003C, 0x002D
142 },
143 "-> $1.00 <--"
144 }
145 };
146
test_punycode(int n)147 static int test_punycode(int n)
148 {
149 const struct puny_test *tc = puny_cases + n;
150 unsigned int buffer[50];
151 unsigned int bsize = OSSL_NELEM(buffer);
152 size_t i;
153
154 if (!TEST_true(ossl_punycode_decode(tc->encoded, strlen(tc->encoded),
155 buffer, &bsize)))
156 return 0;
157 for (i = 0; i < OSSL_NELEM(tc->raw); i++)
158 if (tc->raw[i] == 0)
159 break;
160 if (!TEST_mem_eq(buffer, bsize * sizeof(*buffer),
161 tc->raw, i * sizeof(*tc->raw)))
162 return 0;
163 return 1;
164 }
165
test_a2ulabel(void)166 static int test_a2ulabel(void)
167 {
168 char out[50];
169 size_t outlen;
170
171 /*
172 * Test that no buffer correctly returns the true length.
173 * The punycode being passed in and parsed is malformed but we're not
174 * verifying that behaviour here.
175 */
176 if (!TEST_int_eq(ossl_a2ulabel("xn--a.b.c", NULL, &outlen), 0)
177 || !TEST_size_t_eq(outlen, 7)
178 || !TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, &outlen), 1))
179 return 0;
180 /* Test that a short input length returns the true length */
181 outlen = 1;
182 if (!TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, &outlen), 0)
183 || !TEST_size_t_eq(outlen, 7)
184 || !TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, &outlen), 1)
185 || !TEST_str_eq(out,"\xc2\x80.b.c"))
186 return 0;
187 /* Test for an off by one on the buffer size works */
188 outlen = 6;
189 if (!TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, &outlen), 0)
190 || !TEST_size_t_eq(outlen, 7)
191 || !TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, &outlen), 1)
192 || !TEST_str_eq(out,"\xc2\x80.b.c"))
193 return 0;
194 return 1;
195 }
196
test_puny_overrun(void)197 static int test_puny_overrun(void)
198 {
199 static const unsigned int out[] = {
200 0x0033, 0x5E74, 0x0042, 0x7D44, 0x91D1, 0x516B, 0x5148, 0x751F
201 };
202 static const char *in = "3B-ww4c5e180e575a65lsy2b";
203 unsigned int buf[OSSL_NELEM(out)];
204 unsigned int bsize = OSSL_NELEM(buf) - 1;
205
206 if (!TEST_false(ossl_punycode_decode(in, strlen(in), buf, &bsize))) {
207 if (TEST_mem_eq(buf, bsize * sizeof(*buf), out, sizeof(out)))
208 TEST_error("CRITICAL: buffer overrun detected!");
209 return 0;
210 }
211 return 1;
212 }
213
setup_tests(void)214 int setup_tests(void)
215 {
216 ADD_ALL_TESTS(test_punycode, OSSL_NELEM(puny_cases));
217 ADD_TEST(test_a2ulabel);
218 ADD_TEST(test_puny_overrun);
219 return 1;
220 }
221