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 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 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 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 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 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