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 }; 146 147 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 } 165 166 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 } 196 197 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 } 213 214 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