contrib/bearssl/tools/ta.c

   1 /*
   2  * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be
  13  * included in all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <stdint.h>
  29 #include <errno.h>
  30
  31 #include "brssl.h"
  32 #include "bearssl.h"
  33
  34 static const char *
  35 curve_to_sym(int curve)
  36 {
  37         switch (curve) {
  38         case BR_EC_sect163k1:         return "BR_EC_sect163k1";
  39         case BR_EC_sect163r1:         return "BR_EC_sect163r1";
  40         case BR_EC_sect163r2:         return "BR_EC_sect163r2";
  41         case BR_EC_sect193r1:         return "BR_EC_sect193r1";
  42         case BR_EC_sect193r2:         return "BR_EC_sect193r2";
  43         case BR_EC_sect233k1:         return "BR_EC_sect233k1";
  44         case BR_EC_sect233r1:         return "BR_EC_sect233r1";
  45         case BR_EC_sect239k1:         return "BR_EC_sect239k1";
  46         case BR_EC_sect283k1:         return "BR_EC_sect283k1";
  47         case BR_EC_sect283r1:         return "BR_EC_sect283r1";
  48         case BR_EC_sect409k1:         return "BR_EC_sect409k1";
  49         case BR_EC_sect409r1:         return "BR_EC_sect409r1";
  50         case BR_EC_sect571k1:         return "BR_EC_sect571k1";
  51         case BR_EC_sect571r1:         return "BR_EC_sect571r1";
  52         case BR_EC_secp160k1:         return "BR_EC_secp160k1";
  53         case BR_EC_secp160r1:         return "BR_EC_secp160r1";
  54         case BR_EC_secp160r2:         return "BR_EC_secp160r2";
  55         case BR_EC_secp192k1:         return "BR_EC_secp192k1";
  56         case BR_EC_secp192r1:         return "BR_EC_secp192r1";
  57         case BR_EC_secp224k1:         return "BR_EC_secp224k1";
  58         case BR_EC_secp224r1:         return "BR_EC_secp224r1";
  59         case BR_EC_secp256k1:         return "BR_EC_secp256k1";
  60         case BR_EC_secp256r1:         return "BR_EC_secp256r1";
  61         case BR_EC_secp384r1:         return "BR_EC_secp384r1";
  62         case BR_EC_secp521r1:         return "BR_EC_secp521r1";
  63         case BR_EC_brainpoolP256r1:   return "BR_EC_brainpoolP256r1";
  64         case BR_EC_brainpoolP384r1:   return "BR_EC_brainpoolP384r1";
  65         case BR_EC_brainpoolP512r1:   return "BR_EC_brainpoolP512r1";
  66         }
  67         return NULL;
  68 }
  69
  70 static void
  71 print_blob(const char *name, const unsigned char *buf, size_t len)
  72 {
  73         size_t u;
  74
  75         printf("\nstatic const unsigned char %s[] = {", name);
  76         for (u = 0; u < len; u ++) {
  77                 if (u != 0) {
  78                         printf(",");
  79                 }
  80                 if (u % 12 == 0) {
  81                         printf("\n\t");
  82                 } else {
  83                         printf(" ");
  84                 }
  85                 printf("0x%02X", buf[u]);
  86         }
  87         printf("\n};\n");
  88 }
  89
  90 static int
  91 print_ta_internals(br_x509_trust_anchor *ta, long ctr)
  92 {
  93         char tmp[25];
  94
  95         sprintf(tmp, "TA%ld_DN", ctr);
  96         print_blob(tmp, ta->dn.data, ta->dn.len);
  97         switch (ta->pkey.key_type) {
  98         case BR_KEYTYPE_RSA:
  99                 sprintf(tmp, "TA%ld_RSA_N", ctr);
 100                 print_blob(tmp, ta->pkey.key.rsa.n, ta->pkey.key.rsa.nlen);
 101                 sprintf(tmp, "TA%ld_RSA_E", ctr);
 102                 print_blob(tmp, ta->pkey.key.rsa.e, ta->pkey.key.rsa.elen);
 103                 break;
 104         case BR_KEYTYPE_EC:
 105                 sprintf(tmp, "TA%ld_EC_Q", ctr);
 106                 print_blob(tmp, ta->pkey.key.ec.q, ta->pkey.key.ec.qlen);
 107                 break;
 108         default:
 109                 fprintf(stderr, "ERROR: unknown anchor key type '%d'\n",
 110                         ta->pkey.key_type);
 111                 return -1;
 112         }
 113         return 0;
 114 }
 115
 116 static void
 117 print_ta(br_x509_trust_anchor *ta, long ctr)
 118 {
 119         char tmp[25];
 120
 121         printf("\t{\n");
 122         printf("\t\t{ (unsigned char *)TA%ld_DN, sizeof TA%ld_DN },\n",
 123                 ctr, ctr);
 124         printf("\t\t%s,\n", (ta->flags & BR_X509_TA_CA)
 125                 ? "BR_X509_TA_CA" : "0");
 126         printf("\t\t{\n");
 127         switch (ta->pkey.key_type) {
 128                 const char *cname;
 129
 130         case BR_KEYTYPE_RSA:
 131                 printf("\t\t\tBR_KEYTYPE_RSA,\n");
 132                 printf("\t\t\t{ .rsa = {\n");
 133                 printf("\t\t\t\t(unsigned char *)TA%ld_RSA_N,"
 134                         " sizeof TA%ld_RSA_N,\n", ctr, ctr);
 135                 printf("\t\t\t\t(unsigned char *)TA%ld_RSA_E,"
 136                         " sizeof TA%ld_RSA_E,\n", ctr, ctr);
 137                 printf("\t\t\t} }\n");
 138                 break;
 139         case BR_KEYTYPE_EC:
 140                 printf("\t\t\tBR_KEYTYPE_EC,\n");
 141                 printf("\t\t\t{ .ec = {\n");
 142                 cname = curve_to_sym(ta->pkey.key.ec.curve);
 143                 if (cname == NULL) {
 144                         sprintf(tmp, "%d", ta->pkey.key.ec.curve);
 145                         cname = tmp;
 146                 }
 147                 printf("\t\t\t\t%s,\n", cname);
 148                 printf("\t\t\t\t(unsigned char *)TA%ld_EC_Q,"
 149                         " sizeof TA%ld_EC_Q,\n", ctr, ctr);
 150                 printf("\t\t\t} }\n");
 151         }
 152         printf("\t\t}\n");
 153         printf("\t}");
 154 }
 155
 156 static void
 157 usage_ta(void)
 158 {
 159         fprintf(stderr,
 160 "usage: brssl ta [ options ] file...\n");
 161         fprintf(stderr,
 162 "options:\n");
 163         fprintf(stderr,
 164 "   -q            suppress verbose messages\n");
 165 }
 166
 167 /* see brssl.h */
 168 int
 169 do_ta(int argc, char *argv[])
 170 {
 171         int retcode;
 172         int verbose;
 173         int i, num_files;
 174         anchor_list tas = VEC_INIT;
 175         size_t u, num;
 176
 177         retcode = 0;
 178         verbose = 1;
 179         num_files = 0;
 180         for (i = 0; i < argc; i ++) {
 181                 const char *arg;
 182
 183                 arg = argv[i];
 184                 if (arg[0] != '-') {
 185                         num_files ++;
 186                         continue;
 187                 }
 188                 argv[i] = NULL;
 189                 if (eqstr(arg, "-v") || eqstr(arg, "-verbose")) {
 190                         verbose = 1;
 191                 } else if (eqstr(arg, "-q") || eqstr(arg, "-quiet")) {
 192                         verbose = 0;
 193                 } else {
 194                         fprintf(stderr, "ERROR: unknown option: '%s'\n", arg);
 195                         usage_ta();
 196                         goto ta_exit_error;
 197                 }
 198         }
 199         if (num_files == 0) {
 200                 fprintf(stderr, "ERROR: no certificate file provided\n");
 201                 usage_ta();
 202                 goto ta_exit_error;
 203         }
 204
 205         for (i = 0; i < argc; i ++) {
 206                 const char *fname;
 207                 size_t len1, len2;
 208
 209                 fname = argv[i];
 210                 if (fname == NULL) {
 211                         continue;
 212                 }
 213                 if (verbose) {
 214                         fprintf(stderr, "Reading file '%s': ", fname);
 215                         fflush(stderr);
 216                 }
 217                 len1 = VEC_LEN(tas);
 218                 if (read_trust_anchors(&tas, fname) == 0) {
 219                         goto ta_exit_error;
 220                 }
 221                 len2 = VEC_LEN(tas) - len1;
 222                 if (verbose) {
 223                         fprintf(stderr, "%lu trust anchor%s\n",
 224                                 (unsigned long)len2, len2 > 1 ? "s" : "");
 225                 }
 226         }
 227         num = VEC_LEN(tas);
 228         for (u = 0; u < num; u ++) {
 229                 if (print_ta_internals(&VEC_ELT(tas, u), u) < 0) {
 230                         goto ta_exit_error;
 231                 }
 232         }
 233         printf("\nstatic const br_x509_trust_anchor TAs[%ld] = {", (long)num);
 234         for (u = 0; u < num; u ++) {
 235                 if (u != 0) {
 236                         printf(",");
 237                 }
 238                 printf("\n");
 239                 print_ta(&VEC_ELT(tas, u), u);
 240         }
 241         printf("\n};\n");
 242         printf("\n#define TAs_NUM   %ld\n", (long)num);
 243
 244         /*
 245          * Release allocated structures.
 246          */
 247 ta_exit:
 248         VEC_CLEAREXT(tas, free_ta_contents);
 249         return retcode;
 250
 251 ta_exit_error:
 252         retcode = -1;
 253         goto ta_exit;
 254 }