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 __FBSDID("$FreeBSD$"); 29 30 #include <stdint.h> 31 #include <string.h> 32 33 #include "endian.h" 34 #include "image.h" 35 #include "mkimg.h" 36 37 static void osdep_uuidgen(mkimg_uuid_t *); 38 39 #ifdef __APPLE__ 40 #include <uuid/uuid.h> 41 42 static void 43 osdep_uuidgen(mkimg_uuid_t *uuid) 44 { 45 46 uuid_generate_time((void *)uuid); 47 } 48 #endif /* __APPLE__ */ 49 50 #ifdef __FreeBSD__ 51 #include <sys/uuid.h> 52 53 static void 54 osdep_uuidgen(mkimg_uuid_t *uuid) 55 { 56 57 uuidgen((void *)uuid, 1); 58 } 59 #endif /* __FreeBSD__ */ 60 61 #ifdef __linux__ 62 #include <stdlib.h> 63 #include <time.h> 64 65 static void 66 osdep_uuidgen(mkimg_uuid_t *uuid) 67 { 68 struct timeval tv; 69 uint64_t time = 0x01B21DD213814000LL; 70 u_int i; 71 uint16_t seq; 72 73 if (gettimeofday(&tv, NULL) == -1) 74 abort(); 75 76 time += (uint64_t)tv.tv_sec * 10000000LL; 77 time += tv.tv_usec * 10; 78 79 uuid->time_low = (uint32_t)time; 80 uuid->time_mid = (uint16_t)(time >> 32); 81 uuid->time_hi_and_version = (uint16_t)(time >> 48) & 0xfff; 82 uuid->time_hi_and_version |= 1 << 12; 83 84 seq = random(); 85 86 uuid->clock_seq_hi_and_reserved = (uint8_t)(seq >> 8) & 0x3f; 87 uuid->clock_seq_low = (uint8_t)seq; 88 89 for (i = 0; i < 6; i++) 90 uuid->node[i] = (uint8_t)random(); 91 uuid->node[0] |= 0x01; 92 } 93 #endif /* __linux__ */ 94 95 void 96 mkimg_uuid(mkimg_uuid_t *uuid) 97 { 98 static uint8_t gen[sizeof(mkimg_uuid_t)]; 99 u_int i; 100 101 if (!unit_testing) { 102 osdep_uuidgen(uuid); 103 return; 104 } 105 106 for (i = 0; i < sizeof(gen); i++) 107 gen[i]++; 108 memcpy(uuid, gen, sizeof(*uuid)); 109 } 110 111 void 112 mkimg_uuid_enc(void *buf, const mkimg_uuid_t *uuid) 113 { 114 uint8_t *p = buf; 115 u_int i; 116 117 le32enc(p, uuid->time_low); 118 le16enc(p + 4, uuid->time_mid); 119 le16enc(p + 6, uuid->time_hi_and_version); 120 p[8] = uuid->clock_seq_hi_and_reserved; 121 p[9] = uuid->clock_seq_low; 122 for (i = 0; i < 6; i++) 123 p[10 + i] = uuid->node[i]; 124 } 125