lib/libcrypto/asn1/t_x509.c

   1 /* $OpenBSD: t_x509.c,v 1.31 2018/05/18 18:23:24 tb 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
 250 X509_ocspid_print(BIO *bp, X509 *x)
 251 {
 252         unsigned char *der = NULL;
 253         unsigned char *dertmp;
 254         int derlen;
 255         int i;
 256         unsigned char SHA1md[SHA_DIGEST_LENGTH];
 257
 258         /* display the hash of the subject as it would appear
 259            in OCSP requests */
 260         if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
 261                 goto err;
 262         derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
 263         if ((der = dertmp = malloc(derlen)) == NULL)
 264                 goto err;
 265         i2d_X509_NAME(x->cert_info->subject, &dertmp);
 266
 267         if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
 268                 goto err;
 269         for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 270                 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 271                         goto err;
 272         }
 273         free (der);
 274         der = NULL;
 275
 276         /* display the hash of the public key as it would appear
 277            in OCSP requests */
 278         if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
 279                 goto err;
 280
 281         if (!EVP_Digest(x->cert_info->key->public_key->data,
 282             x->cert_info->key->public_key->length,
 283             SHA1md, NULL, EVP_sha1(), NULL))
 284                 goto err;
 285         for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 286                 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 287                         goto err;
 288         }
 289         BIO_printf(bp, "\n");
 290
 291         return (1);
 292
 293 err:
 294         free(der);
 295         return (0);
 296 }
 297
 298 int
 299 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
 300 {
 301         const unsigned char *s;
 302         int i, n;
 303
 304         n = sig->length;
 305         s = sig->data;
 306         for (i = 0; i < n; i++) {
 307                 if ((i % 18) == 0) {
 308                         if (BIO_write(bp, "\n", 1) <= 0)
 309                                 return 0;
 310                         if (BIO_indent(bp, indent, indent) <= 0)
 311                                 return 0;
 312                 }
 313                 if (BIO_printf(bp, "%02x%s", s[i],
 314                     ((i + 1) == n) ? "" : ":") <= 0)
 315                         return 0;
 316         }
 317         if (BIO_write(bp, "\n", 1) != 1)
 318                 return 0;
 319
 320         return 1;
 321 }
 322
 323 int
 324 X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig)
 325 {
 326         int sig_nid;
 327         if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
 328                 return 0;
 329         if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
 330                 return 0;
 331
 332         sig_nid = OBJ_obj2nid(sigalg->algorithm);
 333         if (sig_nid != NID_undef) {
 334                 int pkey_nid, dig_nid;
 335                 const EVP_PKEY_ASN1_METHOD *ameth;
 336                 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
 337                         ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
 338                         if (ameth && ameth->sig_print)
 339                                 return ameth->sig_print(bp, sigalg, sig, 9, 0);
 340                 }
 341         }
 342         if (sig)
 343                 return X509_signature_dump(bp, sig, 9);
 344         else if (BIO_puts(bp, "\n") <= 0)
 345                 return 0;
 346         return 1;
 347 }
 348
 349 int
 350 ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
 351 {
 352         int i, n;
 353         char buf[80];
 354         const char *p;
 355
 356         if (v == NULL)
 357                 return (0);
 358         n = 0;
 359         p = (const char *)v->data;
 360         for (i = 0; i < v->length; i++) {
 361                 if ((p[i] > '~') || ((p[i] < ' ') &&
 362                     (p[i] != '\n') && (p[i] != '\r')))
 363                         buf[n] = '.';
 364                 else
 365                         buf[n] = p[i];
 366                 n++;
 367                 if (n >= 80) {
 368                         if (BIO_write(bp, buf, n) <= 0)
 369                                 return (0);
 370                         n = 0;
 371                 }
 372         }
 373         if (n > 0)
 374                 if (BIO_write(bp, buf, n) <= 0)
 375                         return (0);
 376         return (1);
 377 }
 378
 379 int
 380 ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
 381 {
 382         if (tm->type == V_ASN1_UTCTIME)
 383                 return ASN1_UTCTIME_print(bp, tm);
 384         if (tm->type == V_ASN1_GENERALIZEDTIME)
 385                 return ASN1_GENERALIZEDTIME_print(bp, tm);
 386         BIO_write(bp, "Bad time value", 14);
 387         return (0);
 388 }
 389
 390 static const char *mon[12] = {
 391         "Jan", "Feb", "Mar", "Apr", "May", "Jun",
 392         "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
 393 };
 394
 395 int
 396 ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
 397 {
 398         char *v;
 399         int gmt = 0;
 400         int i;
 401         int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 402         char *f = "";
 403         int f_len = 0;
 404
 405         i = tm->length;
 406         v = (char *)tm->data;
 407
 408         if (i < 12)
 409                 goto err;
 410         if (v[i-1] == 'Z')
 411                 gmt = 1;
 412         for (i = 0; i < 12; i++)
 413                 if ((v[i] > '9') || (v[i] < '0'))
 414                         goto err;
 415         y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 +
 416             (v[2] - '0') * 10 + (v[3] - '0');
 417         M = (v[4] - '0') * 10 + (v[5] - '0');
 418         if ((M > 12) || (M < 1))
 419                 goto err;
 420         d = (v[6] - '0') * 10 + (v[7] - '0');
 421         h = (v[8] - '0') * 10 + (v[9] - '0');
 422         m = (v[10] - '0') * 10 + (v[11] - '0');
 423         if (tm->length >= 14 &&
 424             (v[12] >= '0') && (v[12] <= '9') &&
 425             (v[13] >= '0') && (v[13] <= '9')) {
 426                 s =  (v[12] - '0') * 10 + (v[13] - '0');
 427                 /* Check for fractions of seconds. */
 428                 if (tm->length >= 15 && v[14] == '.') {
 429                         int l = tm->length;
 430                         f = &v[14];     /* The decimal point. */
 431                         f_len = 1;
 432                         while (14 + f_len < l && f[f_len] >= '0' &&
 433                             f[f_len] <= '9')
 434                                 ++f_len;
 435                 }
 436         }
 437
 438         if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
 439             mon[M - 1], d, h, m, s, f_len, f, y, (gmt) ? " GMT" : "") <= 0)
 440                 return (0);
 441         else
 442                 return (1);
 443
 444 err:
 445         BIO_write(bp, "Bad time value", 14);
 446         return (0);
 447 }
 448
 449 int
 450 ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
 451 {
 452         const char *v;
 453         int gmt = 0;
 454         int i;
 455         int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 456
 457         i = tm->length;
 458         v = (const char *)tm->data;
 459
 460         if (i < 10)
 461                 goto err;
 462         if (v[i-1] == 'Z')
 463                 gmt = 1;
 464         for (i = 0; i < 10; i++)
 465                 if ((v[i] > '9') || (v[i] < '0'))
 466                         goto err;
 467         y = (v[0] - '0') * 10 + (v[1] - '0');
 468         if (y < 50)
 469                 y += 100;
 470         M = (v[2] - '0') * 10 + (v[3] - '0');
 471         if ((M > 12) || (M < 1))
 472                 goto err;
 473         d = (v[4] - '0') * 10 + (v[5] - '0');
 474         h = (v[6] - '0') * 10 + (v[7] - '0');
 475         m = (v[8] - '0') * 10 + (v[9] - '0');
 476         if (tm->length >=12 &&
 477             (v[10] >= '0') && (v[10] <= '9') &&
 478             (v[11] >= '0') && (v[11] <= '9'))
 479                 s = (v[10] - '0') * 10 + (v[11] - '0');
 480
 481         if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
 482             mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0)
 483                 return (0);
 484         else
 485                 return (1);
 486
 487 err:
 488         BIO_write(bp, "Bad time value", 14);
 489         return (0);
 490 }
 491
 492 int
 493 X509_NAME_print(BIO *bp, const X509_NAME *name, int obase)
 494 {
 495         char *s, *c, *b;
 496         int ret = 0, l, i;
 497
 498         l = 80 - 2 - obase;
 499
 500         b = X509_NAME_oneline(name, NULL, 0);
 501         if (b == NULL)
 502                 return 0;
 503         if (*b == '\0') {
 504                 free(b);
 505                 return 1;
 506         }
 507         s = b + 1; /* skip the first slash */
 508
 509         c = s;
 510         for (;;) {
 511                 if (((*s == '/') &&
 512                     ((s[1] >= 'A') && (s[1] <= 'Z') &&
 513                     ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') &&
 514                     (s[3] == '='))))) || (*s == '\0')) {
 515                         i = s - c;
 516                         if (BIO_write(bp, c, i) != i)
 517                                 goto err;
 518                         c = s + 1;      /* skip following slash */
 519                         if (*s != '\0') {
 520                                 if (BIO_write(bp, ", ", 2) != 2)
 521                                         goto err;
 522                         }
 523                         l--;
 524                 }
 525                 if (*s == '\0')
 526                         break;
 527                 s++;
 528                 l--;
 529         }
 530
 531         ret = 1;
 532         if (0) {
 533 err:
 534                 X509error(ERR_R_BUF_LIB);
 535         }
 536         free(b);
 537         return (ret);
 538 }