1 /*-
2 * Copyright (c) 2016 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 #include <stdint.h>
29 #include <string.h>
30
31 #include "endian.h"
32 #include "image.h"
33 #include "mkimg.h"
34
35 static void osdep_uuidgen(mkimg_uuid_t *);
36
37 #ifdef __APPLE__
38 #include <uuid/uuid.h>
39
40 static void
osdep_uuidgen(mkimg_uuid_t * uuid)41 osdep_uuidgen(mkimg_uuid_t *uuid)
42 {
43
44 uuid_generate_time((void *)uuid);
45 }
46 #endif /* __APPLE__ */
47
48 #ifdef __FreeBSD__
49 #include <sys/uuid.h>
50
51 static void
osdep_uuidgen(mkimg_uuid_t * uuid)52 osdep_uuidgen(mkimg_uuid_t *uuid)
53 {
54
55 uuidgen((void *)uuid, 1);
56 }
57 #endif /* __FreeBSD__ */
58
59 #ifdef __linux__
60 #include <stdlib.h>
61 #include <time.h>
62
63 static void
osdep_uuidgen(mkimg_uuid_t * uuid)64 osdep_uuidgen(mkimg_uuid_t *uuid)
65 {
66 struct timeval tv;
67 uint64_t time = 0x01B21DD213814000LL;
68 u_int i;
69 uint16_t seq;
70
71 if (gettimeofday(&tv, NULL) == -1)
72 abort();
73
74 time += (uint64_t)tv.tv_sec * 10000000LL;
75 time += tv.tv_usec * 10;
76
77 uuid->time_low = (uint32_t)time;
78 uuid->time_mid = (uint16_t)(time >> 32);
79 uuid->time_hi_and_version = (uint16_t)(time >> 48) & 0xfff;
80 uuid->time_hi_and_version |= 1 << 12;
81
82 seq = random();
83
84 uuid->clock_seq_hi_and_reserved = (uint8_t)(seq >> 8) & 0x3f;
85 uuid->clock_seq_low = (uint8_t)seq;
86
87 for (i = 0; i < 6; i++)
88 uuid->node[i] = (uint8_t)random();
89 uuid->node[0] |= 0x01;
90 }
91 #endif /* __linux__ */
92
93 void
mkimg_uuid(mkimg_uuid_t * uuid)94 mkimg_uuid(mkimg_uuid_t *uuid)
95 {
96 static uint8_t gen[sizeof(mkimg_uuid_t)];
97 u_int i;
98
99 if (!unit_testing) {
100 osdep_uuidgen(uuid);
101 return;
102 }
103
104 for (i = 0; i < sizeof(gen); i++)
105 gen[i]++;
106 memcpy(uuid, gen, sizeof(*uuid));
107 }
108
109 void
mkimg_uuid_enc(void * buf,const mkimg_uuid_t * uuid)110 mkimg_uuid_enc(void *buf, const mkimg_uuid_t *uuid)
111 {
112 uint8_t *p = buf;
113 u_int i;
114
115 le32enc(p, uuid->time_low);
116 le16enc(p + 4, uuid->time_mid);
117 le16enc(p + 6, uuid->time_hi_and_version);
118 p[8] = uuid->clock_seq_hi_and_reserved;
119 p[9] = uuid->clock_seq_low;
120 for (i = 0; i < 6; i++)
121 p[10 + i] = uuid->node[i];
122 }
123