| 1 | /* |
| 2 | * QEMU UUID Library |
| 3 | * |
| 4 | * Copyright (c) 2016 Red Hat, Inc. |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include "qemu/osdep.h" |
| 22 | #include "qemu/uuid.h" |
| 23 | |
| 24 | struct { |
| 25 | const char *uuidstr; |
| 26 | QemuUUID uuid; |
| 27 | bool uuidstr_is_valid; |
| 28 | bool check_unparse; |
| 29 | } uuid_test_data[] = { |
| 30 | { /* Normal */ |
| 31 | "586ece27-7f09-41e0-9e74-e901317e9d42", |
| 32 | { { { |
| 33 | 0x58, 0x6e, 0xce, 0x27, 0x7f, 0x09, 0x41, 0xe0, |
| 34 | 0x9e, 0x74, 0xe9, 0x01, 0x31, 0x7e, 0x9d, 0x42, |
| 35 | } } }, |
| 36 | true, true, |
| 37 | }, { /* NULL */ |
| 38 | "00000000-0000-0000-0000-000000000000", |
| 39 | { }, |
| 40 | true, true, |
| 41 | }, { /* Upper case */ |
| 42 | "0CC6C752-3961-4028-A286-C05CC616D396", |
| 43 | { { { |
| 44 | 0x0c, 0xc6, 0xc7, 0x52, 0x39, 0x61, 0x40, 0x28, |
| 45 | 0xa2, 0x86, 0xc0, 0x5c, 0xc6, 0x16, 0xd3, 0x96, |
| 46 | } } }, |
| 47 | true, false, |
| 48 | }, { /* Mixed case */ |
| 49 | "0CC6C752-3961-4028-a286-c05cc616D396", |
| 50 | { { { |
| 51 | 0x0c, 0xc6, 0xc7, 0x52, 0x39, 0x61, 0x40, 0x28, |
| 52 | 0xa2, 0x86, 0xc0, 0x5c, 0xc6, 0x16, 0xd3, 0x96, |
| 53 | } } }, |
| 54 | true, false, |
| 55 | }, { /* Empty */ |
| 56 | "" |
| 57 | }, { /* Too short */ |
| 58 | "abc", |
| 59 | }, { /* Non-hex */ |
| 60 | "abcdefgh-0000-0000-0000-000000000000", |
| 61 | }, { /* No '-' */ |
| 62 | "0cc6c75239614028a286c05cc616d396", |
| 63 | }, { /* '-' in wrong position */ |
| 64 | "0cc6c-7523961-4028-a286-c05cc616d396", |
| 65 | }, { /* Double '-' */ |
| 66 | "0cc6c752--3961-4028-a286-c05cc616d396", |
| 67 | }, { /* Too long */ |
| 68 | "0000000000000000000000000000000000000000000000", |
| 69 | }, { /* Invalid char in the beginning */ |
| 70 | ")cc6c752-3961-4028-a286-c05cc616d396", |
| 71 | }, { /* Invalid char in the beginning, in extra */ |
| 72 | ")0cc6c752-3961-4028-a286-c05cc616d396", |
| 73 | }, { /* Invalid char in the middle */ |
| 74 | "0cc6c752-39*1-4028-a286-c05cc616d396", |
| 75 | }, { /* Invalid char in the middle, in extra */ |
| 76 | "0cc6c752-39*61-4028-a286-c05cc616d396", |
| 77 | }, { /* Invalid char in the end */ |
| 78 | "0cc6c752-3961-4028-a286-c05cc616d39&", |
| 79 | }, { /* Invalid char in the end, in extra */ |
| 80 | "0cc6c752-3961-4028-a286-c05cc616d396&", |
| 81 | }, { /* Short end and trailing space */ |
| 82 | "0cc6c752-3961-4028-a286-c05cc616d39 ", |
| 83 | }, { /* Leading space and short end */ |
| 84 | " 0cc6c752-3961-4028-a286-c05cc616d39", |
| 85 | }, |
| 86 | }; |
| 87 | |
| 88 | static inline bool uuid_is_valid(QemuUUID *uuid) |
| 89 | { |
| 90 | return qemu_uuid_is_null(uuid) || |
| 91 | ((uuid->data[6] & 0xf0) == 0x40 && (uuid->data[8] & 0xc0) == 0x80); |
| 92 | } |
| 93 | |
| 94 | static void test_uuid_generate(void) |
| 95 | { |
| 96 | QemuUUID uuid_not_null = { { { |
| 97 | 0x58, 0x6e, 0xce, 0x27, 0x7f, 0x09, 0x41, 0xe0, |
| 98 | 0x9e, 0x74, 0xe9, 0x01, 0x31, 0x7e, 0x9d, 0x42 |
| 99 | } } }; |
| 100 | QemuUUID uuid; |
| 101 | int i; |
| 102 | |
| 103 | for (i = 0; i < 100; ++i) { |
| 104 | qemu_uuid_generate(&uuid); |
| 105 | g_assert(uuid_is_valid(&uuid)); |
| 106 | g_assert_false(qemu_uuid_is_null(&uuid)); |
| 107 | g_assert_false(qemu_uuid_is_equal(&uuid_not_null, &uuid)); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | static void test_uuid_is_null(void) |
| 112 | { |
| 113 | QemuUUID uuid_null = { }; |
| 114 | QemuUUID uuid_not_null = { { { |
| 115 | 0x58, 0x6e, 0xce, 0x27, 0x7f, 0x09, 0x41, 0xe0, |
| 116 | 0x9e, 0x74, 0xe9, 0x01, 0x31, 0x7e, 0x9d, 0x42 |
| 117 | } } }; |
| 118 | QemuUUID uuid_not_null_2 = { { { 1 } } }; |
| 119 | |
| 120 | g_assert(qemu_uuid_is_null(&uuid_null)); |
| 121 | g_assert_false(qemu_uuid_is_null(&uuid_not_null)); |
| 122 | g_assert_false(qemu_uuid_is_null(&uuid_not_null_2)); |
| 123 | } |
| 124 | |
| 125 | static void test_uuid_parse(void) |
| 126 | { |
| 127 | int i, r; |
| 128 | |
| 129 | for (i = 0; i < ARRAY_SIZE(uuid_test_data); i++) { |
| 130 | QemuUUID uuid; |
| 131 | bool is_valid = uuid_test_data[i].uuidstr_is_valid; |
| 132 | |
| 133 | r = qemu_uuid_parse(uuid_test_data[i].uuidstr, &uuid); |
| 134 | g_assert_cmpint(!r, ==, is_valid); |
| 135 | if (is_valid) { |
| 136 | g_assert_cmpint(is_valid, ==, uuid_is_valid(&uuid)); |
| 137 | g_assert_cmpmem(&uuid_test_data[i].uuid, sizeof(uuid), |
| 138 | &uuid, sizeof(uuid)); |
| 139 | } |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | static void test_uuid_unparse(void) |
| 144 | { |
| 145 | int i; |
| 146 | |
| 147 | for (i = 0; i < ARRAY_SIZE(uuid_test_data); i++) { |
| 148 | char out[UUID_STR_LEN]; |
| 149 | |
| 150 | if (!uuid_test_data[i].check_unparse) { |
| 151 | continue; |
| 152 | } |
| 153 | qemu_uuid_unparse(&uuid_test_data[i].uuid, out); |
| 154 | g_assert_cmpstr(uuid_test_data[i].uuidstr, ==, out); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | static void test_uuid_unparse_strdup(void) |
| 159 | { |
| 160 | int i; |
| 161 | |
| 162 | for (i = 0; i < ARRAY_SIZE(uuid_test_data); i++) { |
| 163 | char *out; |
| 164 | |
| 165 | if (!uuid_test_data[i].check_unparse) { |
| 166 | continue; |
| 167 | } |
| 168 | out = qemu_uuid_unparse_strdup(&uuid_test_data[i].uuid); |
| 169 | g_assert_cmpstr(uuid_test_data[i].uuidstr, ==, out); |
| 170 | g_free(out); |
| 171 | } |
| 172 | } |
| 173 | |
| 174 | static void test_uuid_hash(void) |
| 175 | { |
| 176 | QemuUUID uuid; |
| 177 | int i; |
| 178 | |
| 179 | for (i = 0; i < 100; i++) { |
| 180 | qemu_uuid_generate(&uuid); |
| 181 | /* Obtain the UUID hash */ |
| 182 | uint32_t hash_a = qemu_uuid_hash(&uuid); |
| 183 | int data_idx = g_random_int_range(0, 15); |
| 184 | /* Change a single random byte of the UUID */ |
| 185 | if (uuid.data[data_idx] < 0xFF) { |
| 186 | uuid.data[data_idx]++; |
| 187 | } else { |
| 188 | uuid.data[data_idx]--; |
| 189 | } |
| 190 | /* Obtain the UUID hash again */ |
| 191 | uint32_t hash_b = qemu_uuid_hash(&uuid); |
| 192 | /* |
| 193 | * Both hashes shall be different (avoid collision) |
| 194 | * for any change in the UUID fields |
| 195 | */ |
| 196 | g_assert_cmpint(hash_a, !=, hash_b); |
| 197 | } |
| 198 | } |
| 199 | |
| 200 | int main(int argc, char **argv) |
| 201 | { |
| 202 | g_test_init(&argc, &argv, NULL); |
| 203 | g_test_add_func("/uuid/is_null", test_uuid_is_null); |
| 204 | g_test_add_func("/uuid/generate", test_uuid_generate); |
| 205 | g_test_add_func("/uuid/parse", test_uuid_parse); |
| 206 | g_test_add_func("/uuid/unparse", test_uuid_unparse); |
| 207 | g_test_add_func("/uuid/unparse_strdup", test_uuid_unparse_strdup); |
| 208 | g_test_add_func("/uuid/hash", test_uuid_hash); |
| 209 | |
| 210 | return g_test_run(); |
| 211 | } |