xref: /openbmc/qemu/tests/unit/test-uuid.c (revision 721da039)
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 
uuid_is_valid(QemuUUID * uuid)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 
test_uuid_generate(void)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 
test_uuid_is_null(void)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 
test_uuid_parse(void)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 
test_uuid_unparse(void)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 
test_uuid_unparse_strdup(void)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 
test_uuid_hash(void)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 
main(int argc,char ** argv)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 }
212