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 "internal/asn1_int.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, ci->signature, NULL) <= 0)
 168             goto err;
 169     }
 170
 171     if (!(cflag & X509_FLAG_NO_ISSUER)) {
 172         if (BIO_printf(bp, "        Issuer:%c", mlch) <= 0)
 173             goto err;
 174         if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
 175             < 0)
 176             goto err;
 177         if (BIO_write(bp, "\n", 1) <= 0)
 178             goto err;
 179     }
 180     if (!(cflag & X509_FLAG_NO_VALIDITY)) {
 181         if (BIO_write(bp, "        Validity\n", 17) <= 0)
 182             goto err;
 183         if (BIO_write(bp, "            Not Before: ", 24) <= 0)
 184             goto err;
 185         if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
 186             goto err;
 187         if (BIO_write(bp, "\n            Not After : ", 25) <= 0)
 188             goto err;
 189         if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
 190             goto err;
 191         if (BIO_write(bp, "\n", 1) <= 0)
 192             goto err;
 193     }
 194     if (!(cflag & X509_FLAG_NO_SUBJECT)) {
 195         if (BIO_printf(bp, "        Subject:%c", mlch) <= 0)
 196             goto err;
 197         if (X509_NAME_print_ex
 198             (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
 199             goto err;
 200         if (BIO_write(bp, "\n", 1) <= 0)
 201             goto err;
 202     }
 203     if (!(cflag & X509_FLAG_NO_PUBKEY)) {
 204         if (BIO_write(bp, "        Subject Public Key Info:\n", 33) <= 0)
 205             goto err;
 206         if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
 207             goto err;
 208         if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
 209             goto err;
 210         if (BIO_puts(bp, "\n") <= 0)
 211             goto err;
 212
 213         pkey = X509_get_pubkey(x);
 214         if (pkey == NULL) {
 215             BIO_printf(bp, "%12sUnable to load Public Key\n", "");
 216             ERR_print_errors(bp);
 217         } else {
 218             EVP_PKEY_print_public(bp, pkey, 16, NULL);
 219             EVP_PKEY_free(pkey);
 220         }
 221     }
 222
 223     if (!(cflag & X509_FLAG_NO_IDS)) {
 224         if (ci->issuerUID) {
 225             if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
 226                 goto err;
 227             if (!X509_signature_dump(bp, ci->issuerUID, 12))
 228                 goto err;
 229         }
 230         if (ci->subjectUID) {
 231             if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
 232                 goto err;
 233             if (!X509_signature_dump(bp, ci->subjectUID, 12))
 234                 goto err;
 235         }
 236     }
 237
 238     if (!(cflag & X509_FLAG_NO_EXTENSIONS))
 239         X509V3_extensions_print(bp, "X509v3 extensions",
 240                                 ci->extensions, cflag, 8);
 241
 242     if (!(cflag & X509_FLAG_NO_SIGDUMP)) {
 243         if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0)
 244             goto err;
 245     }
 246     if (!(cflag & X509_FLAG_NO_AUX)) {
 247         if (!X509_CERT_AUX_print(bp, x->aux, 0))
 248             goto err;
 249     }
 250     ret = 1;
 251  err:
 252     if (m != NULL)
 253         OPENSSL_free(m);
 254     return (ret);
 255 }
 256
 257 int X509_ocspid_print(BIO *bp, X509 *x)
 258 {
 259     unsigned char *der = NULL;
 260     unsigned char *dertmp;
 261     int derlen;
 262     int i;
 263     unsigned char SHA1md[SHA_DIGEST_LENGTH];
 264
 265     /*
 266      * display the hash of the subject as it would appear in OCSP requests
 267      */
 268     if (BIO_printf(bp, "        Subject OCSP hash: ") <= 0)
 269         goto err;
 270     derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
 271     if ((der = dertmp = OPENSSL_malloc(derlen)) == NULL)
 272         goto err;
 273     i2d_X509_NAME(x->cert_info->subject, &dertmp);
 274
 275     if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
 276         goto err;
 277     for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 278         if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 279             goto err;
 280     }
 281     OPENSSL_free(der);
 282     der = NULL;
 283
 284     /*
 285      * display the hash of the public key as it would appear in OCSP requests
 286      */
 287     if (BIO_printf(bp, "\n        Public key OCSP hash: ") <= 0)
 288         goto err;
 289
 290     if (!EVP_Digest(x->cert_info->key->public_key->data,
 291                     x->cert_info->key->public_key->length,
 292                     SHA1md, NULL, EVP_sha1(), NULL))
 293         goto err;
 294     for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
 295         if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
 296             goto err;
 297     }
 298     BIO_printf(bp, "\n");
 299
 300     return (1);
 301  err:
 302     if (der != NULL)
 303         OPENSSL_free(der);
 304     return (0);
 305 }
 306
 307 int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
 308 {
 309     const unsigned char *s;
 310     int i, n;
 311
 312     n = sig->length;
 313     s = sig->data;
 314     for (i = 0; i < n; i++) {
 315         if ((i % 18) == 0) {
 316             if (BIO_write(bp, "\n", 1) <= 0)
 317                 return 0;
 318             if (BIO_indent(bp, indent, indent) <= 0)
 319                 return 0;
 320         }
 321         if (BIO_printf(bp, "%02x%s", s[i], ((i + 1) == n) ? "" : ":") <= 0)
 322             return 0;
 323     }
 324     if (BIO_write(bp, "\n", 1) != 1)
 325         return 0;
 326
 327     return 1;
 328 }
 329
 330 int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
 331 {
 332     int sig_nid;
 333     if (BIO_puts(bp, "    Signature Algorithm: ") <= 0)
 334         return 0;
 335     if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
 336         return 0;
 337
 338     sig_nid = OBJ_obj2nid(sigalg->algorithm);
 339     if (sig_nid != NID_undef) {
 340         int pkey_nid, dig_nid;
 341         const EVP_PKEY_ASN1_METHOD *ameth;
 342         if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) {
 343             ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
 344             if (ameth && ameth->sig_print)
 345                 return ameth->sig_print(bp, sigalg, sig, 9, 0);
 346         }
 347     }
 348     if (sig)
 349         return X509_signature_dump(bp, sig, 9);
 350     else if (BIO_puts(bp, "\n") <= 0)
 351         return 0;
 352     return 1;
 353 }
 354
 355 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
 356 {
 357     int i, n;
 358     char buf[80];
 359     const char *p;
 360
 361     if (v == NULL)
 362         return (0);
 363     n = 0;
 364     p = (const char *)v->data;
 365     for (i = 0; i < v->length; i++) {
 366         if ((p[i] > '~') || ((p[i] < ' ') &&
 367                              (p[i] != '\n') && (p[i] != '\r')))
 368             buf[n] = '.';
 369         else
 370             buf[n] = p[i];
 371         n++;
 372         if (n >= 80) {
 373             if (BIO_write(bp, buf, n) <= 0)
 374                 return (0);
 375             n = 0;
 376         }
 377     }
 378     if (n > 0)
 379         if (BIO_write(bp, buf, n) <= 0)
 380             return (0);
 381     return (1);
 382 }
 383
 384 int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
 385 {
 386     if (tm->type == V_ASN1_UTCTIME)
 387         return ASN1_UTCTIME_print(bp, tm);
 388     if (tm->type == V_ASN1_GENERALIZEDTIME)
 389         return ASN1_GENERALIZEDTIME_print(bp, tm);
 390     BIO_write(bp, "Bad time value", 14);
 391     return (0);
 392 }
 393
 394 static const char *mon[12] = {
 395     "Jan", "Feb", "Mar", "Apr", "May", "Jun",
 396     "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
 397 };
 398
 399 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
 400 {
 401     char *v;
 402     int gmt = 0;
 403     int i;
 404     int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 405     char *f = NULL;
 406     int f_len = 0;
 407
 408     i = tm->length;
 409     v = (char *)tm->data;
 410
 411     if (i < 12)
 412         goto err;
 413     if (v[i - 1] == 'Z')
 414         gmt = 1;
 415     for (i = 0; i < 12; i++)
 416         if ((v[i] > '9') || (v[i] < '0'))
 417             goto err;
 418     y = (v[0] - '0') * 1000 + (v[1] - '0') * 100
 419         + (v[2] - '0') * 10 + (v[3] - '0');
 420     M = (v[4] - '0') * 10 + (v[5] - '0');
 421     if ((M > 12) || (M < 1))
 422         goto err;
 423     d = (v[6] - '0') * 10 + (v[7] - '0');
 424     h = (v[8] - '0') * 10 + (v[9] - '0');
 425     m = (v[10] - '0') * 10 + (v[11] - '0');
 426     if (tm->length >= 14 &&
 427         (v[12] >= '0') && (v[12] <= '9') &&
 428         (v[13] >= '0') && (v[13] <= '9')) {
 429         s = (v[12] - '0') * 10 + (v[13] - '0');
 430         /* Check for fractions of seconds. */
 431         if (tm->length >= 15 && v[14] == '.') {
 432             int l = tm->length;
 433             f = &v[14];         /* The decimal point. */
 434             f_len = 1;
 435             while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
 436                 ++f_len;
 437         }
 438     }
 439
 440     if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
 441                    mon[M - 1], d, h, m, s, f_len, f, y,
 442                    (gmt) ? " GMT" : "") <= 0)
 443         return (0);
 444     else
 445         return (1);
 446  err:
 447     BIO_write(bp, "Bad time value", 14);
 448     return (0);
 449 }
 450
 451 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
 452 {
 453     const char *v;
 454     int gmt = 0;
 455     int i;
 456     int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
 457
 458     i = tm->length;
 459     v = (const char *)tm->data;
 460
 461     if (i < 10)
 462         goto err;
 463     if (v[i - 1] == 'Z')
 464         gmt = 1;
 465     for (i = 0; i < 10; i++)
 466         if ((v[i] > '9') || (v[i] < '0'))
 467             goto err;
 468     y = (v[0] - '0') * 10 + (v[1] - '0');
 469     if (y < 50)
 470         y += 100;
 471     M = (v[2] - '0') * 10 + (v[3] - '0');
 472     if ((M > 12) || (M < 1))
 473         goto err;
 474     d = (v[4] - '0') * 10 + (v[5] - '0');
 475     h = (v[6] - '0') * 10 + (v[7] - '0');
 476     m = (v[8] - '0') * 10 + (v[9] - '0');
 477     if (tm->length >= 12 &&
 478         (v[10] >= '0') && (v[10] <= '9') && (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,
 483                    (gmt) ? " GMT" : "") <= 0)
 484         return (0);
 485     else
 486         return (1);
 487  err:
 488     BIO_write(bp, "Bad time value", 14);
 489     return (0);
 490 }
 491
 492 int 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)
 501         return 0;
 502     if (!*b) {
 503         OPENSSL_free(b);
 504         return 1;
 505     }
 506     s = b + 1;                  /* skip the first slash */
 507
 508     c = s;
 509     for (;;) {
 510 #ifndef CHARSET_EBCDIC
 511         if (((*s == '/') &&
 512              ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
 513                                                  ((s[2] >= 'A')
 514                                                   && (s[2] <= 'Z')
 515                                                   && (s[3] == '='))
 516               ))) || (*s == '\0'))
 517 #else
 518         if (((*s == '/') &&
 519              (isupper(s[1]) && ((s[2] == '=') ||
 520                                 (isupper(s[2]) && (s[3] == '='))
 521               ))) || (*s == '\0'))
 522 #endif
 523         {
 524             i = s - c;
 525             if (BIO_write(bp, c, i) != i)
 526                 goto err;
 527             c = s + 1;          /* skip following slash */
 528             if (*s != '\0') {
 529                 if (BIO_write(bp, ", ", 2) != 2)
 530                     goto err;
 531             }
 532             l--;
 533         }
 534         if (*s == '\0')
 535             break;
 536         s++;
 537         l--;
 538     }
 539
 540     ret = 1;
 541     if (0) {
 542  err:
 543         X509err(X509_F_X509_NAME_PRINT, ERR_R_BUF_LIB);
 544     }
 545     OPENSSL_free(b);
 546     return (ret);
 547 }