2 * Copyright 2022 The OpenSSL Project Authors. All Rights Reserved.
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
10 #include <openssl/crypto.h>
13 #include "crypto/punycode.h"
14 #include "internal/nelem.h"
15 #include "internal/packet.h"
19 static const struct puny_test {
23 /* Test cases from RFC 3492 */
24 { /* Arabic (Egyptian) */
25 { 0x0644, 0x064A, 0x0647, 0x0645, 0x0627, 0x0628, 0x062A, 0x0643, 0x0644,
26 0x0645, 0x0648, 0x0634, 0x0639, 0x0631, 0x0628, 0x064A, 0x061F
28 "egbpdaj6bu4bxfgehfvwxn"
30 { /* Chinese (simplified) */
31 { 0x4ED6, 0x4EEC, 0x4E3A, 0x4EC0, 0x4E48, 0x4E0D, 0x8BF4, 0x4E2D, 0x6587
33 "ihqwcrb4cv8a8dqg056pqjye"
35 { /* Chinese (traditional) */
36 { 0x4ED6, 0x5011, 0x7232, 0x4EC0, 0x9EBD, 0x4E0D, 0x8AAA, 0x4E2D, 0x6587
38 "ihqwctvzc91f659drss3x8bo0yb"
40 { /* Czech: Pro<ccaron>prost<ecaron>nemluv<iacute><ccaron>esky */
41 { 0x0050, 0x0072, 0x006F, 0x010D, 0x0070, 0x0072, 0x006F, 0x0073, 0x0074,
42 0x011B, 0x006E, 0x0065, 0x006D, 0x006C, 0x0075, 0x0076, 0x00ED, 0x010D,
43 0x0065, 0x0073, 0x006B, 0x0079
45 "Proprostnemluvesky-uyb24dma41a"
48 { 0x05DC, 0x05DE, 0x05D4, 0x05D4, 0x05DD, 0x05E4, 0x05E9, 0x05D5, 0x05D8,
49 0x05DC, 0x05D0, 0x05DE, 0x05D3, 0x05D1, 0x05E8, 0x05D9, 0x05DD, 0x05E2,
50 0x05D1, 0x05E8, 0x05D9, 0x05EA
52 "4dbcagdahymbxekheh6e0a7fei0b"
54 { /* Hindi (Devanagari) */
55 { 0x092F, 0x0939, 0x0932, 0x094B, 0x0917, 0x0939, 0x093F, 0x0928, 0x094D,
56 0x0926, 0x0940, 0x0915, 0x094D, 0x092F, 0x094B, 0x0902, 0x0928, 0x0939,
57 0x0940, 0x0902, 0x092C, 0x094B, 0x0932, 0x0938, 0x0915, 0x0924, 0x0947,
58 0x0939, 0x0948, 0x0902
60 "i1baa7eci9glrd9b2ae1bj0hfcgg6iyaf8o0a1dig0cd"
62 { /* Japanese (kanji and hiragana) */
63 { 0x306A, 0x305C, 0x307F, 0x3093, 0x306A, 0x65E5, 0x672C, 0x8A9E, 0x3092,
64 0x8A71, 0x3057, 0x3066, 0x304F, 0x308C, 0x306A, 0x3044, 0x306E, 0x304B
66 "n8jok5ay5dzabd5bym9f0cm5685rrjetr6pdxa"
68 { /* Korean (Hangul syllables) */
69 { 0xC138, 0xACC4, 0xC758, 0xBAA8, 0xB4E0, 0xC0AC, 0xB78C, 0xB4E4, 0xC774,
70 0xD55C, 0xAD6D, 0xC5B4, 0xB97C, 0xC774, 0xD574, 0xD55C, 0xB2E4, 0xBA74,
71 0xC5BC, 0xB9C8, 0xB098, 0xC88B, 0xC744, 0xAE4C
73 "989aomsvi5e83db1d2a355cv1e0vak1dwrv93d5xbh15a0dt30a5jpsd879ccm6fea98c"
75 { /* Russian (Cyrillic) */
76 { 0x043F, 0x043E, 0x0447, 0x0435, 0x043C, 0x0443, 0x0436, 0x0435, 0x043E,
77 0x043D, 0x0438, 0x043D, 0x0435, 0x0433, 0x043E, 0x0432, 0x043E, 0x0440,
78 0x044F, 0x0442, 0x043F, 0x043E, 0x0440, 0x0443, 0x0441, 0x0441, 0x043A,
81 "b1abfaaepdrnnbgefbaDotcwatmq2g4l"
84 { 0x0050, 0x006F, 0x0072, 0x0071, 0x0075, 0x00E9, 0x006E, 0x006F, 0x0070,
85 0x0075, 0x0065, 0x0064, 0x0065, 0x006E, 0x0073, 0x0069, 0x006D, 0x0070,
86 0x006C, 0x0065, 0x006D, 0x0065, 0x006E, 0x0074, 0x0065, 0x0068, 0x0061,
87 0x0062, 0x006C, 0x0061, 0x0072, 0x0065, 0x006E, 0x0045, 0x0073, 0x0070,
88 0x0061, 0x00F1, 0x006F, 0x006C
90 "PorqunopuedensimplementehablarenEspaol-fmd56a"
93 { 0x0054, 0x1EA1, 0x0069, 0x0073, 0x0061, 0x006F, 0x0068, 0x1ECD, 0x006B,
94 0x0068, 0x00F4, 0x006E, 0x0067, 0x0074, 0x0068, 0x1EC3, 0x0063, 0x0068,
95 0x1EC9, 0x006E, 0x00F3, 0x0069, 0x0074, 0x0069, 0x1EBF, 0x006E, 0x0067,
96 0x0056, 0x0069, 0x1EC7, 0x0074
98 "TisaohkhngthchnitingVit-kjcr8268qyxafd2f1b9g"
100 { /* Japanese: 3<nen>B<gumi><kinpachi><sensei> */
101 { 0x0033, 0x5E74, 0x0042, 0x7D44, 0x91D1, 0x516B, 0x5148, 0x751F
103 "3B-ww4c5e180e575a65lsy2b"
105 { /* Japanese: <amuro><namie>-with-SUPER-MONKEYS */
106 { 0x5B89, 0x5BA4, 0x5948, 0x7F8E, 0x6075, 0x002D, 0x0077, 0x0069, 0x0074,
107 0x0068, 0x002D, 0x0053, 0x0055, 0x0050, 0x0045, 0x0052, 0x002D, 0x004D,
108 0x004F, 0x004E, 0x004B, 0x0045, 0x0059, 0x0053
110 "-with-SUPER-MONKEYS-pc58ag80a8qai00g7n9n"
112 { /* Japanese: Hello-Another-Way-<sorezore><no><basho> */
113 { 0x0048, 0x0065, 0x006C, 0x006C, 0x006F, 0x002D, 0x0041, 0x006E, 0x006F,
114 0x0074, 0x0068, 0x0065, 0x0072, 0x002D, 0x0057, 0x0061, 0x0079, 0x002D,
115 0x305D, 0x308C, 0x305E, 0x308C, 0x306E, 0x5834, 0x6240
117 "Hello-Another-Way--fc4qua05auwb3674vfr0b"
119 { /* Japanese: <hitotsu><yane><no><shita>2 */
120 { 0x3072, 0x3068, 0x3064, 0x5C4B, 0x6839, 0x306E, 0x4E0B, 0x0032
122 "2-u9tlzr9756bt3uc0v"
124 { /* Japanese: Maji<de>Koi<suru>5<byou><mae> */
125 { 0x004D, 0x0061, 0x006A, 0x0069, 0x3067, 0x004B, 0x006F, 0x0069, 0x3059,
126 0x308B, 0x0035, 0x79D2, 0x524D
128 "MajiKoi5-783gue6qz075azm5e"
130 { /* Japanese: <pafii>de<runba> */
131 { 0x30D1, 0x30D5, 0x30A3, 0x30FC, 0x0064, 0x0065, 0x30EB, 0x30F3, 0x30D0
135 { /* Japanese: <sono><supiido><de> */
136 { 0x305D, 0x306E, 0x30B9, 0x30D4, 0x30FC, 0x30C9, 0x3067
141 { 0x002D, 0x003E, 0x0020, 0x0024, 0x0031, 0x002E, 0x0030, 0x0030, 0x0020,
148 static int test_punycode(int n)
150 const struct puny_test *tc = puny_cases + n;
151 unsigned int buffer[50];
152 unsigned int bsize = OSSL_NELEM(buffer);
155 if (!TEST_true(ossl_punycode_decode(tc->encoded, strlen(tc->encoded),
158 for (i = 0; i < OSSL_NELEM(tc->raw); i++)
161 if (!TEST_mem_eq(buffer, bsize * sizeof(*buffer),
162 tc->raw, i * sizeof(*tc->raw)))
167 static int test_a2ulabel(void)
172 * The punycode being passed in and parsed is malformed but we're not
173 * verifying that behaviour here.
175 if (!TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, 1), 0)
176 || !TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, 7), 1))
178 /* Test for an off by one on the buffer size works */
179 if (!TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, 6), 0)
180 || !TEST_int_eq(ossl_a2ulabel("xn--a.b.c", out, 7), 1)
181 || !TEST_str_eq(out,"\xc2\x80.b.c"))
186 static int test_puny_overrun(void)
188 static const unsigned int out[] = {
189 0x0033, 0x5E74, 0x0042, 0x7D44, 0x91D1, 0x516B, 0x5148, 0x751F
191 static const char *in = "3B-ww4c5e180e575a65lsy2b";
192 unsigned int buf[OSSL_NELEM(out)];
193 unsigned int bsize = OSSL_NELEM(buf) - 1;
195 if (!TEST_false(ossl_punycode_decode(in, strlen(in), buf, &bsize))) {
196 if (TEST_mem_eq(buf, bsize * sizeof(*buf), out, sizeof(out)))
197 TEST_error("CRITICAL: buffer overrun detected!");
203 static int test_dotted_overflow(void)
205 static const char string[] = "a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a.a";
206 const size_t num_reps = OSSL_NELEM(string) / 2;
213 /* Create out input punycode string */
214 if (!TEST_ptr(in = BUF_MEM_new()))
216 if (!TEST_true(WPACKET_init_len(&p, in, 0))) {
220 for (i = 0; i < num_reps; i++) {
221 if (i > 1 && !TEST_true(WPACKET_put_bytes_u8(&p, '.')))
223 if (!TEST_true(WPACKET_memcpy(&p, "xn--a", sizeof("xn--a") - 1)))
226 if (!TEST_true(WPACKET_put_bytes_u8(&p, '\0')))
228 if (!TEST_ptr(out = OPENSSL_malloc(in->length)))
231 /* Test the decode into an undersized buffer */
232 memset(out, 0x7f, in->length - 1);
233 if (!TEST_int_le(ossl_a2ulabel(in->data, out, num_reps), 0)
234 || !TEST_int_eq(out[num_reps], 0x7f))
237 /* Test the decode works into a full size buffer */
238 if (!TEST_int_gt(ossl_a2ulabel(in->data, out, in->length), 0)
239 || !TEST_size_t_eq(strlen(out), num_reps * 3))
250 int setup_tests(void)
252 ADD_ALL_TESTS(test_punycode, OSSL_NELEM(puny_cases));
253 ADD_TEST(test_dotted_overflow);
254 ADD_TEST(test_a2ulabel);
255 ADD_TEST(test_puny_overrun);