info.c

   1 /*-
   2  * SPDX-License-Identifier: BSD-2-Clause
   3  *
   4  * Copyright (c) 2022 Cameron Katri.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY CAMERON KATRI AND CONTRIBUTORS ``AS IS'' AND
  16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  18  * ARE DISCLAIMED.  IN NO EVENT SHALL CAMERON KATRI OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 #include <getopt.h>
  29 #include <limits.h>
  30 #include <stdbool.h>
  31 #include <stdio.h>
  32 #include <stdlib.h>
  33
  34 #include "trustcache.h"
  35
  36 void print_header(struct trust_cache cache);
  37 void print_hash(uint8_t cdhash[CS_CDHASH_LEN], bool newline);
  38 void print_entry(struct trust_cache_entry1 entry);
  39 void print_entries(struct trust_cache cache);
  40
  41 int
  42 tcinfo(int argc, char **argv)
  43 {
  44         struct trust_cache cache;
  45         bool headeronly = false, onlyhash = false;
  46         int entrynum = -1;
  47         const char *errstr = NULL;
  48
  49         int ch;
  50         while ((ch = getopt(argc, argv, "che:")) != -1) {
  51                 switch (ch) {
  52                         case 'h':
  53                                 headeronly = true;
  54                                 break;
  55                         case 'e':
  56                                 entrynum = strtonum(optarg, 1, INT_MAX, &errstr);
  57                                 if (errstr != NULL) {
  58                                         fprintf(stderr, "entry number is %s: %s\n", errstr, optarg);
  59                                         exit(1);
  60                                 }
  61                                 break;
  62                         case 'c':
  63                                 onlyhash = true;
  64                                 break;
  65                 }
  66         }
  67
  68         argc -= optind;
  69         argv += optind;
  70
  71         if (argc == 0) {
  72                 return -1;
  73         }
  74
  75         cache = opentrustcache(argv[0]);
  76
  77         if (entrynum == -1 && !onlyhash)
  78                 print_header(cache);
  79         if (!headeronly) {
  80                 if (onlyhash) {
  81                         for (int i = 0; i < cache.num_entries; i++) {
  82                                 if (cache.version == 0)
  83                                         print_hash(cache.hashes[i], true);
  84                                 else
  85                                         print_hash(cache.entries[i].cdhash, true);
  86                         }
  87                         goto done;
  88                 }
  89                 if (entrynum != -1) {
  90                         if (entrynum > cache.num_entries) {
  91                                 fprintf(stderr, "no entry %i\n", entrynum);
  92                                 exit(1);
  93                         }
  94                         if (cache.version == 1) {
  95                                 print_entry(cache.entries[entrynum - 1]);
  96                         } else if (cache.version == 0) {
  97                                 print_hash(cache.hashes[entrynum - 1], true);
  98                         }
  99                 } else {
 100                         print_entries(cache);
 101                 }
 102         }
 103
 104 done:
 105         free(cache.entries);
 106
 107         return 0;
 108 }
 109
 110 void
 111 print_header(struct trust_cache cache)
 112 {
 113         printf("version = %i\n", cache.version);
 114         char out[37];
 115         uuid_unparse(cache.uuid, out);
 116         printf("uuid = %s\n", out);
 117         printf("entry count = %i\n", cache.num_entries);
 118 }
 119
 120 void
 121 print_entries(struct trust_cache cache)
 122 {
 123         for (int i = 0; i < cache.num_entries; i++) {
 124                 if (cache.version == 0)
 125                         print_hash(cache.hashes[i], true);
 126                 else if (cache.version == 1)
 127                         print_entry(cache.entries[i]);
 128         }
 129 }
 130
 131 void
 132 print_entry(struct trust_cache_entry1 entry)
 133 {
 134         print_hash(entry.cdhash, false);
 135
 136         switch (entry.flags) {
 137                 case CS_TRUST_CACHE_AMFID:
 138                         printf(" CS_TRUST_CACHE_AMFID ");
 139                         break;
 140                 case CS_TRUST_CACHE_ANE:
 141                         printf(" CS_TRUST_CACHE_ANE ");
 142                         break;
 143                 case CS_TRUST_CACHE_AMFID|CS_TRUST_CACHE_ANE:
 144                         printf(" CS_TRUST_CACHE_AMFID|CS_TRUST_CACHE_ANE ");
 145                         break;
 146                 default:
 147                         printf(" [none] ");
 148                         break;
 149         }
 150
 151         printf("[%i]\n", entry.hash_type);
 152 }
 153
 154 void
 155 print_hash(uint8_t cdhash[CS_CDHASH_LEN], bool newline)
 156 {
 157         for (int j = 0; j < CS_CDHASH_LEN; j++) {
 158                 printf("%02x", cdhash[j]);
 159         }
 160         if (newline)
 161                 printf("\n");
 162 }