lib/libcrypto/asn1/t_x509.c

   1 /* $OpenBSD: t_x509.c,v 1.27 2017/01/29 17:49:22 beck Exp $ */
   2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   3  * All rights reserved.
   4  *
   5  * This package is an SSL implementation written
   6  * by Eric Young (eay@cryptsoft.com).
   7  * The implementation was written so as to conform with Netscapes SSL.
   8  *
   9  * This library is free for commercial and non-commercial use as long as
  10  * the following conditions are aheared to.  The following conditions
  11  * apply to all code found in this distribution, be it the RC4, RSA,
  12  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  13  * included with this distribution is covered by the same copyright terms
  14  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15  *
  16  * Copyright remains Eric Young's, and as such any Copyright notices in
  17  * the code are not to be removed.
  18  * If this package is used in a product, Eric Young should be given attribution
  19  * as the author of the parts of the library used.
  20  * This can be in the form of a textual message at program startup or
  21  * in documentation (online or textual) provided with the package.
  22  *
  23  * Redistribution and use in source and binary forms, with or without
  24  * modification, are permitted provided that the following conditions
  25  * are met:
  26  * 1. Redistributions of source code must retain the copyright
  27  *    notice, this list of conditions and the following disclaimer.
  28  * 2. Redistributions in binary form must reproduce the above copyright
  29  *    notice, this list of conditions and the following disclaimer in the
  30  *    documentation and/or other materials provided with the distribution.
  31  * 3. All advertising materials mentioning features or use of this software
  32  *    must display the following acknowledgement:
  33  *    "This product includes cryptographic software written by
  34  *     Eric Young (eay@cryptsoft.com)"
  35  *    The word 'cryptographic' can be left out if the rouines from the library
  36  *    being used are not cryptographic related :-).
  37  * 4. If you include any Windows specific code (or a derivative thereof) from
  38  *    the apps directory (application code) you must include an acknowledgement:
  39  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40  *
  41  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51  * SUCH DAMAGE.
  52  *
  53  * The licence and distribution terms for any publically available version or
  54  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  55  * copied and put under another distribution licence
  56  * [including the GNU Public Licence.]
  57  */
  58
  59 #include <stdio.h>
  60
  61 #include <openssl/opensslconf.h>
  62
  63 #include <openssl/bn.h>
  64 #include <openssl/buffer.h>
  65 #include <openssl/err.h>
  66 #include <openssl/objects.h>
  67 #include <openssl/x509.h>
  68 #include <openssl/x509v3.h>
  69
  70 #ifndef OPENSSL_NO_DSA
  71 #include <openssl/dsa.h>
  72 #endif
  73 #ifndef OPENSSL_NO_EC
  74 #include <openssl/ec.h>
  75 #endif
  76 #ifndef OPENSSL_NO_RSA
  77 #include <openssl/rsa.h>
  78 #endif
  79
  80 #include "asn1_locl.h"
  81
  82 int
  83 X509_print_fp(FILE *fp, X509 *x)
  84 {
  85         return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
  86 }
  87
  88 int
  89 X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, unsigned long cflag)
  90 {
  91         BIO *b;
  92         int ret;
  93
  94         if ((b = BIO_new(BIO_s_file())) == NULL) {
  95                 X509error(ERR_R_BUF_LIB);
  96                 return (0);
  97         }
  98         BIO_set_fp(b, fp, BIO_NOCLOSE);
  99         ret = X509_print_ex(b, x, nmflag, cflag);
 100         BIO_free(b);
 101         return (ret);
 102 }
 103
 104 int
 105 X509_print(BIO *bp, X509 *x)
 106 {
 107         return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
 108 }
 109
 110 int
 111 X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, unsigned long cflag)
 112 {
 113         long l;
 114         int ret = 0, i;
 115         char *m = NULL, mlch = ' ';
 116         int nmindent = 0;
 117         X509_CINF *ci;
 118         ASN1_INTEGER *bs;
 119         EVP_PKEY *pkey = NULL;
 120         const char *neg;
 121
 122         if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
 123                 mlch = '\n';
 124                 nmindent = 12;
 125         }
 126
 127         if (nmflags == X509_FLAG_COMPAT)
 128                 nmindent = 16;
 129
 130         ci = x->cert_info;
 131         if (!(cflag & X509_FLAG_NO_HEADER)) {
 132                 if (BIO_write(bp, "Certificate:\n", 13) <= 0)
 133                         goto err;
 134                 if (BIO_write(bp, "    Data:\n", 10) <= 0)
 135                         goto err;
 136         }
 137         if (!(cflag & X509_FLAG_NO_VERSION)) {
 138                 l = X509_get_version(x);
 139                 if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n",
 140                     "", l + 1, l) <= 0)
 141                         goto err;
 142         }
 143         if (!(cflag & X509_FLAG_NO_SERIAL)) {
 144                 if (BIO_write(bp, "        Serial Number:", 22) <= 0)
 145                         goto err;
 146
 147                 bs = X509_get_serialNumber(x);
 148                 if (bs->length <= (int)sizeof(long)) {
 149                         l = ASN1_INTEGER_get(bs);
 150                         if (bs->type == V_ASN1_NEG_INTEGER) {
 151                                 l = -l;
 152                                 neg = "-";
 153                         } else
 154                                 neg = "";
 155                         if (BIO_printf(bp, " %s%lu (%s0x%lx)\n",
 156                             neg, l, neg, l) <= 0)
 157                                 goto err;
 158                 } else {
 159                         neg = (bs->type == V_ASN1_NEG_INTEGER) ?
 160                             " (Negative)" : "";
 161                         if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
 162                                 goto err;
 163                         for (i = 0; i < bs->length; i++) {
 164                                 if (BIO_printf(bp, "%02x%c", bs->data[i],
 165                                     ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
 166                                         goto err;
 167                         }
 168                 }
 169
 170         }
 171
 172         if (!(cflag & X509_FLAG_NO_SIGNAME)) {
 173                 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0)
 174                         goto err;
 175         }
 176
 177         if (!(cflag & X509_FLAG_NO_ISSUER)) {
 178                 if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
 179                         goto err;
 180                 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x),
 181                     nmindent, nmflags) < 0)
 182                         goto err;
 183                 if (BIO_write(bp, "\n", 1) <= 0)
 184                         goto err;
 185         }
 186         if (!(cflag & X509_FLAG_NO_VALIDITY)) {
 187                 if (BIO_write(bp, "        Validity\n", 17) <= 0)
 188                         goto err;
 189                 if (BIO_write(bp, "            Not Before: ", 24) <= 0)
 190                         goto err;
 191                 if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
 192                         goto err;
 193                 if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
 194                         goto err;
 195                 if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
 196                         goto err;
 197                 if (BIO_write(bp, "\n", 1) <= 0)
 198                         goto err;
 199         }
 200         if (!(cflag & X509_FLAG_NO_SUBJECT)) {
 201                 if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
 202                         goto err;
 203                 if (X509_NAME_print_ex(bp, X509_get_subject_name(x),
 204                     nmindent, nmflags) < 0)
 205                         goto err;
 206                 if (BIO_write(bp, "\n", 1) <= 0)
 207                         goto err;
 208         }
 209         if (!(cflag & X509_FLAG_NO_PUBKEY)) {
 210                 if (BIO_write(bp, "        Subject Public Key Info:\n",
 211                     33) <= 0)
 212                         goto err;
 213                 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
 214                         goto err;
 215                 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
 216                         goto err;
 217                 if (BIO_puts(bp, "\n") <= 0)
 218                         goto err;
 219
 220                 pkey = X509_get_pubkey(x);
 221                 if (pkey == NULL) {
 222                         BIO_printf(bp, "%12sUnable to load Public Key\n", "");
 223                         ERR_print_errors(bp);
 224                 } else {
 225                         EVP_PKEY_print_public(bp, pkey, 16, NULL);
 226                         EVP_PKEY_free(pkey);
 227                 }
 228         }
 229
 230         if (!(cflag & X509_FLAG_NO_EXTENSIONS))
 231                 X509V3_extensions_print(bp, "X509v3 extensions",
 232                     ci->extensions, cflag, 8);
 233
 234         if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
 235                 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
 236                         goto err;
 237         }
 238         if (!(cflag & X509_FLAG_NO_AUX)) {
 239                 if (!X509_CERT_AUX_print(bp, x->aux, 0))
 240                         goto err;
 241         }
 242         ret = 1;
 243
 244 err:
 245         free(m);
 246         return (ret);
 247 }
 248
 249 int X509_ocspid_print (BIO *bp, X509 *x)
 250 {
 251         unsigned char *der = NULL;
 252         unsigned char *dertmp;
 253         int derlen;
 254         int i;
 255         unsigned char SHA1md[SHA_DIGEST_LENGTH];
 256
 257         /* display the hash of the subject as it would appear
 258            in OCSP requests */
 259         if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
 260                 goto err;
 261         derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
 262         if ((der = dertmp = malloc(derlen)) == NULL)
 263                 goto err;
 264         i2d_X509_NAME(x->cert_info->subject, &dertmp);
 265
 266         if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
 267                 goto err;
 268         for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 269                 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 270                         goto err;
 271         }
 272         free (der);
 273         der = NULL;
 274
 275         /* display the hash of the public key as it would appear
 276            in OCSP requests */
 277         if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
 278                 goto err;
 279
 280         if (!EVP_Digest(x->cert_info->key->public_key->data,
 281             x->cert_info->key->public_key->length,
 282             SHA1md, NULL, EVP_sha1(), NULL))
 283                 goto err;
 284         for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 285                 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 286                         goto err;
 287         }
 288         BIO_printf(bp, "\n");
 289
 290         return (1);
 291
 292 err:
 293         free(der);
 294         return (0);
 295 }
 296
 297 int
 298 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
 299 {
 300         const unsigned char *s;
 301         int i, n;
 302
 303         n = sig->length;
 304         s = sig->data;
 305         for (i = 0; i < n; i++) {
 306                 if ((i % 18) == 0) {
 307                         if (BIO_write(bp, "\n", 1) <= 0)
 308                                 return 0;
 309                         if (BIO_indent(bp, indent, indent) <= 0)
 310                                 return 0;
 311                 }
 312                 if (BIO_printf(bp, "%02x%s", s[i],
 313                     ((i + 1) == n) ? "" : ":") <= 0)
 314                         return 0;
 315         }
 316         if (BIO_write(bp, "\n", 1) != 1)
 317                 return 0;
 318
 319         return 1;
 320 }
 321
 322 int
 323 X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
 324 {
 325         int sig_nid;
 326         if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
 327                 return 0;
 328         if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
 329                 return 0;
 330
 331         sig_nid = OBJ_obj2nid(sigalg->algorithm);
 332         if (sig_nid != NID_undef) {
 333                 int pkey_nid, dig_nid;
 334                 const EVP_PKEY_ASN1_METHOD *ameth;
 335                 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
 336                         ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
 337                         if (ameth && ameth->sig_print)
 338                                 return ameth->sig_print(bp, sigalg, sig, 9, 0);
 339                 }
 340         }
 341         if (sig)
 342                 return X509_signature_dump(bp, sig, 9);
 343         else if (BIO_puts(bp, "\n") <= 0)
 344                 return 0;
 345         return 1;
 346 }
 347
 348 int
 349 ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
 350 {
 351         int i, n;
 352         char buf[80];
 353         const char *p;
 354
 355         if (v == NULL)
 356                 return (0);
 357         n = 0;
 358         p = (const char *)v->data;
 359         for (i = 0; i < v->length; i++) {
 360                 if ((p[i] > '~') || ((p[i] < ' ') &&
 361                     (p[i] != '\n') && (p[i] != '\r')))
 362                         buf[n] = '.';
 363                 else
 364                         buf[n] = p[i];
 365                 n++;
 366                 if (n >= 80) {
 367                         if (BIO_write(bp, buf, n) <= 0)
 368                                 return (0);
 369                         n = 0;
 370                 }
 371         }
 372         if (n > 0)
 373                 if (BIO_write(bp, buf, n) <= 0)
 374                         return (0);
 375         return (1);
 376 }
 377
 378 int
 379 ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
 380 {
 381         if (tm->type == V_ASN1_UTCTIME)
 382                 return ASN1_UTCTIME_print(bp, tm);
 383         if (tm->type == V_ASN1_GENERALIZEDTIME)
 384                 return ASN1_GENERALIZEDTIME_print(bp, tm);
 385         BIO_write(bp, "Bad time value", 14);
 386         return (0);
 387 }
 388
 389 static const char *mon[12] = {
 390         "Jan", "Feb", "Mar", "Apr", "May", "Jun",
 391         "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
 392 };
 393
 394 int
 395 ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
 396 {
 397         char *v;
 398         int gmt = 0;
 399         int i;
 400         int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 401         char *f = NULL;
 402         int f_len = 0;
 403
 404         i = tm->length;
 405         v = (char *)tm->data;
 406
 407         if (i < 12)
 408                 goto err;
 409         if (v[i-1] == 'Z')
 410                 gmt = 1;
 411         for (i = 0; i < 12; i++)
 412                 if ((v[i] > '9') || (v[i] < '0'))
 413                         goto err;
 414         y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 +
 415             (v[2] - '0') * 10 + (v[3] - '0');
 416         M = (v[4] - '0') * 10 + (v[5] - '0');
 417         if ((M > 12) || (M < 1))
 418                 goto err;
 419         d = (v[6] - '0') * 10 + (v[7] - '0');
 420         h = (v[8] - '0') * 10 + (v[9] - '0');
 421         m = (v[10] - '0') * 10 + (v[11] - '0');
 422         if (tm->length >= 14 &&
 423             (v[12] >= '0') && (v[12] <= '9') &&
 424             (v[13] >= '0') && (v[13] <= '9')) {
 425                 s =  (v[12] - '0') * 10 + (v[13] - '0');
 426                 /* Check for fractions of seconds. */
 427                 if (tm->length >= 15 && v[14] == '.') {
 428                         int l = tm->length;
 429                         f = &v[14];     /* The decimal point. */
 430                         f_len = 1;
 431                         while (14 + f_len < l && f[f_len] >= '0' &&
 432                             f[f_len] <= '9')
 433                                 ++f_len;
 434                 }
 435         }
 436
 437         if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
 438             mon[M - 1], d, h, m, s, f_len, f, y, (gmt) ? " GMT" : "") <= 0)
 439                 return (0);
 440         else
 441                 return (1);
 442
 443 err:
 444         BIO_write(bp, "Bad time value", 14);
 445         return (0);
 446 }
 447
 448 int
 449 ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
 450 {
 451         const char *v;
 452         int gmt = 0;
 453         int i;
 454         int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 455
 456         i = tm->length;
 457         v = (const char *)tm->data;
 458
 459         if (i < 10)
 460                 goto err;
 461         if (v[i-1] == 'Z')
 462                 gmt = 1;
 463         for (i = 0; i < 10; i++)
 464                 if ((v[i] > '9') || (v[i] < '0'))
 465                         goto err;
 466         y = (v[0] - '0') * 10 + (v[1] - '0');
 467         if (y < 50)
 468                 y += 100;
 469         M = (v[2] - '0') * 10 + (v[3] - '0');
 470         if ((M > 12) || (M < 1))
 471                 goto err;
 472         d = (v[4] - '0') * 10 + (v[5] - '0');
 473         h = (v[6] - '0') * 10 + (v[7] - '0');
 474         m = (v[8] - '0') * 10 + (v[9] - '0');
 475         if (tm->length >=12 &&
 476             (v[10] >= '0') && (v[10] <= '9') &&
 477             (v[11] >= '0') && (v[11] <= '9'))
 478                 s = (v[10] - '0') * 10 + (v[11] - '0');
 479
 480         if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
 481             mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0)
 482                 return (0);
 483         else
 484                 return (1);
 485
 486 err:
 487         BIO_write(bp, "Bad time value", 14);
 488         return (0);
 489 }
 490
 491 int
 492 X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
 493 {
 494         char *s, *c, *b;
 495         int ret = 0, l, i;
 496
 497         l = 80 - 2 - obase;
 498
 499         b = X509_NAME_oneline(name, NULL, 0);
 500         if (b == NULL)
 501                 return 0;
 502         if (*b == '\0') {
 503                 free(b);
 504                 return 1;
 505         }
 506         s = b + 1; /* skip the first slash */
 507
 508         c = s;
 509         for (;;) {
 510                 if (((*s == '/') &&
 511                     ((s[1] >= 'A') && (s[1] <= 'Z') &&
 512                     ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') &&
 513                     (s[3] == '='))))) || (*s == '\0')) {
 514                         i = s - c;
 515                         if (BIO_write(bp, c, i) != i)
 516                                 goto err;
 517                         c = s + 1;      /* skip following slash */
 518                         if (*s != '\0') {
 519                                 if (BIO_write(bp, ", ", 2) != 2)
 520                                         goto err;
 521                         }
 522                         l--;
 523                 }
 524                 if (*s == '\0')
 525                         break;
 526                 s++;
 527                 l--;
 528         }
 529
 530         ret = 1;
 531         if (0) {
 532 err:
 533                 X509error(ERR_R_BUF_LIB);
 534         }
 535         free(b);
 536         return (ret);
 537 }