crypto/asn1/t_x509.c

   1 /* crypto/asn1/t_x509.c */
   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 #include "cryptlib.h"
  61 #include <openssl/buffer.h>
  62 #include <openssl/bn.h>
  63 #ifndef OPENSSL_NO_RSA
  64 # include <openssl/rsa.h>
  65 #endif
  66 #ifndef OPENSSL_NO_DSA
  67 # include <openssl/dsa.h>
  68 #endif
  69 #ifndef OPENSSL_NO_EC
  70 # include <openssl/ec.h>
  71 #endif
  72 #include <openssl/objects.h>
  73 #include <openssl/x509.h>
  74 #include <openssl/x509v3.h>
  75 #include "asn1_locl.h"
  76
  77 #ifndef OPENSSL_NO_STDIO
  78 int X509_print_fp(FILE *fp, X509 *x)
  79 {
  80     return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
  81 }
  82
  83 int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
  84                      unsigned long cflag)
  85 {
  86     BIO *b;
  87     int ret;
  88
  89     if ((b = BIO_new(BIO_s_file())) == NULL) {
  90         X509err(X509_F_X509_PRINT_EX_FP, ERR_R_BUF_LIB);
  91         return (0);
  92     }
  93     BIO_set_fp(b, fp, BIO_NOCLOSE);
  94     ret = X509_print_ex(b, x, nmflag, cflag);
  95     BIO_free(b);
  96     return (ret);
  97 }
  98 #endif
  99
 100 int X509_print(BIO *bp, X509 *x)
 101 {
 102     return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
 103 }
 104
 105 int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
 106                   unsigned long cflag)
 107 {
 108     long l;
 109     int ret = 0, i;
 110     char *m = NULL, mlch = ' ';
 111     int nmindent = 0;
 112     X509_CINF *ci;
 113     ASN1_INTEGER *bs;
 114     EVP_PKEY *pkey = NULL;
 115     const char *neg;
 116
 117     if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
 118         mlch = '\n';
 119         nmindent = 12;
 120     }
 121
 122     if (nmflags == X509_FLAG_COMPAT)
 123         nmindent = 16;
 124
 125     ci = x->cert_info;
 126     if (!(cflag & X509_FLAG_NO_HEADER)) {
 127         if (BIO_write(bp, "Certificate:\n", 13) <= 0)
 128             goto err;
 129         if (BIO_write(bp, "    Data:\n", 10) <= 0)
 130             goto err;
 131     }
 132     if (!(cflag & X509_FLAG_NO_VERSION)) {
 133         l = X509_get_version(x);
 134         if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)
 135             goto err;
 136     }
 137     if (!(cflag & X509_FLAG_NO_SERIAL)) {
 138
 139         if (BIO_write(bp, "        Serial Number:", 22) <= 0)
 140             goto err;
 141
 142         bs = X509_get_serialNumber(x);
 143         if (bs->length <= (int)sizeof(long)) {
 144             l = ASN1_INTEGER_get(bs);
 145             if (bs->type == V_ASN1_NEG_INTEGER) {
 146                 l = -l;
 147                 neg = "-";
 148             } else
 149                 neg = "";
 150             if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
 151                 goto err;
 152         } else {
 153             neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
 154             if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
 155                 goto err;
 156
 157             for (i = 0; i < bs->length; i++) {
 158                 if (BIO_printf(bp, "%02x%c", bs->data[i],
 159                                ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
 160                     goto err;
 161             }
 162         }
 163
 164     }
 165
 166     if (!(cflag & X509_FLAG_NO_SIGNAME)) {
 167         if (X509_signature_print(bp, x->sig_alg, NULL) <= 0)
 168             goto err;
 169 #if 0
 170         if (BIO_printf(bp, "%8sSignature Algorithm: ", "") <= 0)
 171             goto err;
 172         if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)
 173             goto err;
 174         if (BIO_puts(bp, "\n") <= 0)
 175             goto err;
 176 #endif
 177     }
 178
 179     if (!(cflag & X509_FLAG_NO_ISSUER)) {
 180         if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
 181             goto err;
 182         if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
 183             < 0)
 184             goto err;
 185         if (BIO_write(bp, "\n", 1) <= 0)
 186             goto err;
 187     }
 188     if (!(cflag & X509_FLAG_NO_VALIDITY)) {
 189         if (BIO_write(bp, "        Validity\n", 17) <= 0)
 190             goto err;
 191         if (BIO_write(bp, "            Not Before: ", 24) <= 0)
 192             goto err;
 193         if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
 194             goto err;
 195         if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
 196             goto err;
 197         if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
 198             goto err;
 199         if (BIO_write(bp, "\n", 1) <= 0)
 200             goto err;
 201     }
 202     if (!(cflag & X509_FLAG_NO_SUBJECT)) {
 203         if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
 204             goto err;
 205         if (X509_NAME_print_ex
 206             (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
 207             goto err;
 208         if (BIO_write(bp, "\n", 1) <= 0)
 209             goto err;
 210     }
 211     if (!(cflag & X509_FLAG_NO_PUBKEY)) {
 212         if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
 213             goto err;
 214         if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
 215             goto err;
 216         if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
 217             goto err;
 218         if (BIO_puts(bp, "\n") <= 0)
 219             goto err;
 220
 221         pkey = X509_get_pubkey(x);
 222         if (pkey == NULL) {
 223             BIO_printf(bp, "%12sUnable to load Public Key\n", "");
 224             ERR_print_errors(bp);
 225         } else {
 226             EVP_PKEY_print_public(bp, pkey, 16, NULL);
 227             EVP_PKEY_free(pkey);
 228         }
 229     }
 230
 231     if (!(cflag & X509_FLAG_NO_IDS)) {
 232         if (ci->issuerUID) {
 233             if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
 234                 goto err;
 235             if (!X509_signature_dump(bp, ci->issuerUID, 12))
 236                 goto err;
 237         }
 238         if (ci->subjectUID) {
 239             if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
 240                 goto err;
 241             if (!X509_signature_dump(bp, ci->subjectUID, 12))
 242                 goto err;
 243         }
 244     }
 245
 246     if (!(cflag & X509_FLAG_NO_EXTENSIONS))
 247         X509V3_extensions_print(bp, "X509v3 extensions",
 248                                 ci->extensions, cflag, 8);
 249
 250     if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
 251         if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
 252             goto err;
 253     }
 254     if (!(cflag & X509_FLAG_NO_AUX)) {
 255         if (!X509_CERT_AUX_print(bp, x->aux, 0))
 256             goto err;
 257     }
 258     ret = 1;
 259  err:
 260     if (m != NULL)
 261         OPENSSL_free(m);
 262     return (ret);
 263 }
 264
 265 int X509_ocspid_print(BIO *bp, X509 *x)
 266 {
 267     unsigned char *der = NULL;
 268     unsigned char *dertmp;
 269     int derlen;
 270     int i;
 271     unsigned char SHA1md[SHA_DIGEST_LENGTH];
 272
 273     /*
 274      * display the hash of the subject as it would appear in OCSP requests
 275      */
 276     if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
 277         goto err;
 278     derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
 279     if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL)
 280         goto err;
 281     i2d_X509_NAME(x->cert_info->subject, &dertmp);
 282
 283     if (!EVP_Digest(der, derlen, 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     OPENSSL_free(der);
 290     der = NULL;
 291
 292     /*
 293      * display the hash of the public key as it would appear in OCSP requests
 294      */
 295     if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
 296         goto err;
 297
 298     if (!EVP_Digest(x->cert_info->key->public_key->data,
 299                     x->cert_info->key->public_key->length,
 300                     SHA1md, NULL, EVP_sha1(), NULL))
 301         goto err;
 302     for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 303         if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 304             goto err;
 305     }
 306     BIO_printf(bp, "\n");
 307
 308     return (1);
 309  err:
 310     if (der != NULL)
 311         OPENSSL_free(der);
 312     return (0);
 313 }
 314
 315 int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
 316 {
 317     const unsigned char *s;
 318     int i, n;
 319
 320     n = sig->length;
 321     s = sig->data;
 322     for (i = 0; i < n; i++) {
 323         if ((i % 18) == 0) {
 324             if (BIO_write(bp, "\n", 1) <= 0)
 325                 return 0;
 326             if (BIO_indent(bp, indent, indent) <= 0)
 327                 return 0;
 328         }
 329         if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
 330             return 0;
 331     }
 332     if (BIO_write(bp, "\n", 1) != 1)
 333         return 0;
 334
 335     return 1;
 336 }
 337
 338 int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
 339 {
 340     int sig_nid;
 341     if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
 342         return 0;
 343     if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
 344         return 0;
 345
 346     sig_nid = OBJ_obj2nid(sigalg->algorithm);
 347     if (sig_nid != NID_undef) {
 348         int pkey_nid, dig_nid;
 349         const EVP_PKEY_ASN1_METHOD *ameth;
 350         if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
 351             ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
 352             if (ameth && ameth->sig_print)
 353                 return ameth->sig_print(bp, sigalg, sig, 9, 0);
 354         }
 355     }
 356     if (sig)
 357         return X509_signature_dump(bp, sig, 9);
 358     else if (BIO_puts(bp, "\n") <= 0)
 359         return 0;
 360     return 1;
 361 }
 362
 363 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
 364 {
 365     int i, n;
 366     char buf[80];
 367     const char *p;
 368
 369     if (v == NULL)
 370         return (0);
 371     n = 0;
 372     p = (const char *)v->data;
 373     for (i = 0; i < v->length; i++) {
 374         if ((p[i] > '~') || ((p[i] < ' ') &&
 375                              (p[i] != '\n') && (p[i] != '\r')))
 376             buf[n] = '.';
 377         else
 378             buf[n] = p[i];
 379         n++;
 380         if (n >= 80) {
 381             if (BIO_write(bp, buf, n) <= 0)
 382                 return (0);
 383             n = 0;
 384         }
 385     }
 386     if (n > 0)
 387         if (BIO_write(bp, buf, n) <= 0)
 388             return (0);
 389     return (1);
 390 }
 391
 392 int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
 393 {
 394     if (tm->type == V_ASN1_UTCTIME)
 395         return ASN1_UTCTIME_print(bp, tm);
 396     if (tm->type == V_ASN1_GENERALIZEDTIME)
 397         return ASN1_GENERALIZEDTIME_print(bp, tm);
 398     BIO_write(bp, "Bad time value", 14);
 399     return (0);
 400 }
 401
 402 static const char *mon[12] = {
 403     "Jan", "Feb", "Mar", "Apr", "May", "Jun",
 404     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
 405 };
 406
 407 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
 408 {
 409     char *v;
 410     int gmt = 0;
 411     int i;
 412     int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 413     char *f = NULL;
 414     int f_len = 0;
 415
 416     i = tm->length;
 417     v = (char *)tm->data;
 418
 419     if (i < 12)
 420         goto err;
 421     if (v[i - 1] == 'Z')
 422         gmt = 1;
 423     for (i = 0; i < 12; i++)
 424         if ((v[i] > '9') || (v[i] < '0'))
 425             goto err;
 426     y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
 427         + (v[2] - '0') * 10 + (v[3] - '0');
 428     M = (v[4] - '0') * 10 + (v[5] - '0');
 429     if ((M > 12) || (M < 1))
 430         goto err;
 431     d = (v[6] - '0') * 10 + (v[7] - '0');
 432     h = (v[8] - '0') * 10 + (v[9] - '0');
 433     m = (v[10] - '0') * 10 + (v[11] - '0');
 434     if (tm->length >= 14 &&
 435         (v[12] >= '0') && (v[12] <= '9') &&
 436         (v[13] >= '0') && (v[13] <= '9')) {
 437         s = (v[12] - '0') * 10 + (v[13] - '0');
 438         /* Check for fractions of seconds. */
 439         if (tm->length >= 15 && v[14] == '.') {
 440             int l = tm->length;
 441             f = &v[14];         /* The decimal point. */
 442             f_len = 1;
 443             while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
 444                 ++f_len;
 445         }
 446     }
 447
 448     if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
 449                    mon[M - 1], d, h, m, s, f_len, f, y,
 450                    (gmt) ? " GMT" : "") <= 0)
 451         return (0);
 452     else
 453         return (1);
 454  err:
 455     BIO_write(bp, "Bad time value", 14);
 456     return (0);
 457 }
 458
 459 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
 460 {
 461     const char *v;
 462     int gmt = 0;
 463     int i;
 464     int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 465
 466     i = tm->length;
 467     v = (const char *)tm->data;
 468
 469     if (i < 10)
 470         goto err;
 471     if (v[i - 1] == 'Z')
 472         gmt = 1;
 473     for (i = 0; i < 10; i++)
 474         if ((v[i] > '9') || (v[i] < '0'))
 475             goto err;
 476     y = (v[0] - '0') * 10 + (v[1] - '0');
 477     if (y < 50)
 478         y += 100;
 479     M = (v[2] - '0') * 10 + (v[3] - '0');
 480     if ((M > 12) || (M < 1))
 481         goto err;
 482     d = (v[4] - '0') * 10 + (v[5] - '0');
 483     h = (v[6] - '0') * 10 + (v[7] - '0');
 484     m = (v[8] - '0') * 10 + (v[9] - '0');
 485     if (tm->length >= 12 &&
 486         (v[10] >= '0') && (v[10] <= '9') && (v[11] >= '0') && (v[11] <= '9'))
 487         s = (v[10] - '0') * 10 + (v[11] - '0');
 488
 489     if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s",
 490                    mon[M - 1], d, h, m, s, y + 1900,
 491                    (gmt) ? " GMT" : "") <= 0)
 492         return (0);
 493     else
 494         return (1);
 495  err:
 496     BIO_write(bp, "Bad time value", 14);
 497     return (0);
 498 }
 499
 500 int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
 501 {
 502     char *s, *c, *b;
 503     int ret = 0, l, i;
 504
 505     l = 80 - 2 - obase;
 506
 507     b = X509_NAME_oneline(name, NULL, 0);
 508     if (!b)
 509         return 0;
 510     if (!*b) {
 511         OPENSSL_free(b);
 512         return 1;
 513     }
 514     s = b + 1;                  /* skip the first slash */
 515
 516     c = s;
 517     for (;;) {
 518 #ifndef CHARSET_EBCDIC
 519         if (((*s == '/') &&
 520              ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
 521                                                  ((s[2] >= 'A')
 522                                                   && (s[2] <= 'Z')
 523                                                   && (s[3] == '='))
 524               ))) || (*s == '\0'))
 525 #else
 526         if (((*s == '/') &&
 527              (isupper(s[1]) && ((s[2] == '=') ||
 528                                 (isupper(s[2]) && (s[3] == '='))
 529               ))) || (*s == '\0'))
 530 #endif
 531         {
 532             i = s - c;
 533             if (BIO_write(bp, c, i) != i)
 534                 goto err;
 535             c = s + 1;          /* skip following slash */
 536             if (*s != '\0') {
 537                 if (BIO_write(bp, ", ", 2) != 2)
 538                     goto err;
 539             }
 540             l--;
 541         }
 542         if (*s == '\0')
 543             break;
 544         s++;
 545         l--;
 546     }
 547
 548     ret = 1;
 549     if (0) {
 550  err:
 551         X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
 552     }
 553     OPENSSL_free(b);
 554     return (ret);
 555 }