1 /* $OpenBSD: t_x509.c,v 1.50 2025/01/27 10:29:41 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 <limits.h> 60 #include <stdio.h> 61 62 #include <openssl/opensslconf.h> 63 64 #include <openssl/bn.h> 65 #include <openssl/buffer.h> 66 #include <openssl/err.h> 67 #include <openssl/objects.h> 68 #include <openssl/x509.h> 69 #include <openssl/x509v3.h> 70 71 #ifndef OPENSSL_NO_DSA 72 #include <openssl/dsa.h> 73 #endif 74 #ifndef OPENSSL_NO_EC 75 #include <openssl/ec.h> 76 #endif 77 #ifndef OPENSSL_NO_RSA 78 #include <openssl/rsa.h> 79 #endif 80 81 #include "bytestring.h" 82 #include "evp_local.h" 83 #include "x509_local.h" 84 85 int 86 X509_print_fp(FILE *fp, X509 *x) 87 { 88 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 89 } 90 LCRYPTO_ALIAS(X509_print_fp); 91 92 int 93 X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, unsigned long cflag) 94 { 95 BIO *b; 96 int ret; 97 98 if ((b = BIO_new(BIO_s_file())) == NULL) { 99 X509error(ERR_R_BUF_LIB); 100 return (0); 101 } 102 BIO_set_fp(b, fp, BIO_NOCLOSE); 103 ret = X509_print_ex(b, x, nmflag, cflag); 104 BIO_free(b); 105 return (ret); 106 } 107 LCRYPTO_ALIAS(X509_print_ex_fp); 108 109 int 110 X509_print(BIO *bp, X509 *x) 111 { 112 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 113 } 114 LCRYPTO_ALIAS(X509_print); 115 116 int 117 X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, unsigned long cflag) 118 { 119 long l; 120 int ret = 0, i; 121 char *m = NULL, mlch = ' '; 122 int nmindent = 0; 123 X509_CINF *ci; 124 ASN1_INTEGER *bs; 125 EVP_PKEY *pkey = NULL; 126 127 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) { 128 mlch = '\n'; 129 nmindent = 12; 130 } 131 132 if (nmflags == X509_FLAG_COMPAT) 133 nmindent = 16; 134 135 ci = x->cert_info; 136 if (!(cflag & X509_FLAG_NO_HEADER)) { 137 if (BIO_write(bp, "Certificate:\n", 13) <= 0) 138 goto err; 139 if (BIO_write(bp, " Data:\n", 10) <= 0) 140 goto err; 141 } 142 if (!(cflag & X509_FLAG_NO_VERSION)) { 143 l = X509_get_version(x); 144 if (l >= 0 && l <= 2) { 145 if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", 146 "", l + 1, l) <= 0) 147 goto err; 148 } else { 149 if (BIO_printf(bp, "%8sVersion: unknown (%ld)\n", 150 "", l) <= 0) 151 goto err; 152 } 153 } 154 if (!(cflag & X509_FLAG_NO_SERIAL)) { 155 if (BIO_write(bp, " Serial Number:", 22) <= 0) 156 goto err; 157 158 bs = X509_get_serialNumber(x); 159 l = -1; 160 161 /* 162 * For historical reasons, non-negative serial numbers are 163 * printed in decimal as long as they fit into a long. Using 164 * ASN1_INTEGER_get_uint64() avoids an error on the stack for 165 * numbers between LONG_MAX and ULONG_MAX. Otherwise fall back 166 * to hexadecimal, also for numbers that are non-conformant 167 * (negative or larger than 2^159 - 1). 168 */ 169 if (bs->length <= sizeof(long) && bs->type == V_ASN1_INTEGER) { 170 uint64_t u64; 171 172 if (ASN1_INTEGER_get_uint64(&u64, bs) && u64 <= LONG_MAX) 173 l = (long)u64; 174 } 175 if (l >= 0) { 176 if (BIO_printf(bp, " %ld (0x%lx)\n", l, l) <= 0) 177 goto err; 178 } else { 179 const char *neg = ""; 180 181 if (bs->type == V_ASN1_NEG_INTEGER) 182 neg = " (Negative)"; 183 184 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 185 goto err; 186 for (i = 0; i < bs->length; i++) { 187 if (BIO_printf(bp, "%02x%c", bs->data[i], 188 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 189 goto err; 190 } 191 } 192 193 } 194 195 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 196 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0) 197 goto err; 198 } 199 200 if (!(cflag & X509_FLAG_NO_ISSUER)) { 201 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) 202 goto err; 203 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), 204 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 205 goto err; 206 if (BIO_write(bp, "\n", 1) <= 0) 207 goto err; 208 } 209 if (!(cflag & X509_FLAG_NO_VALIDITY)) { 210 if (BIO_write(bp, " Validity\n", 17) <= 0) 211 goto err; 212 if (BIO_write(bp, " Not Before: ", 24) <= 0) 213 goto err; 214 if (!ASN1_TIME_print(bp, X509_get_notBefore(x))) 215 goto err; 216 if (BIO_write(bp, "\n Not After : ", 25) <= 0) 217 goto err; 218 if (!ASN1_TIME_print(bp, X509_get_notAfter(x))) 219 goto err; 220 if (BIO_write(bp, "\n", 1) <= 0) 221 goto err; 222 } 223 if (!(cflag & X509_FLAG_NO_SUBJECT)) { 224 if (BIO_printf(bp, " Subject:%c", mlch) <= 0) 225 goto err; 226 if (X509_NAME_print_ex(bp, X509_get_subject_name(x), 227 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 228 goto err; 229 if (BIO_write(bp, "\n", 1) <= 0) 230 goto err; 231 } 232 if (!(cflag & X509_FLAG_NO_PUBKEY)) { 233 if (BIO_write(bp, " Subject Public Key Info:\n", 234 33) <= 0) 235 goto err; 236 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 237 goto err; 238 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 239 goto err; 240 if (BIO_puts(bp, "\n") <= 0) 241 goto err; 242 243 pkey = X509_get_pubkey(x); 244 if (pkey == NULL) { 245 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 246 ERR_print_errors(bp); 247 } else { 248 EVP_PKEY_print_public(bp, pkey, 16, NULL); 249 EVP_PKEY_free(pkey); 250 } 251 } 252 253 if (!(cflag & X509_FLAG_NO_EXTENSIONS)) 254 X509V3_extensions_print(bp, "X509v3 extensions", 255 ci->extensions, cflag, 8); 256 257 if (!(cflag & X509_FLAG_NO_SIGDUMP)) { 258 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0) 259 goto err; 260 } 261 if (!(cflag & X509_FLAG_NO_AUX)) { 262 if (!X509_CERT_AUX_print(bp, x->aux, 0)) 263 goto err; 264 } 265 ret = 1; 266 267 err: 268 free(m); 269 return (ret); 270 } 271 LCRYPTO_ALIAS(X509_print_ex); 272 273 int 274 X509_ocspid_print(BIO *bp, X509 *x) 275 { 276 unsigned char *der = NULL; 277 unsigned char *dertmp; 278 int derlen; 279 int i; 280 unsigned char SHA1md[SHA_DIGEST_LENGTH]; 281 282 /* display the hash of the subject as it would appear 283 in OCSP requests */ 284 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 285 goto err; 286 if ((derlen = i2d_X509_NAME(x->cert_info->subject, NULL)) <= 0) 287 goto err; 288 if ((der = dertmp = malloc(derlen)) == NULL) 289 goto err; 290 if (i2d_X509_NAME(x->cert_info->subject, &dertmp) <= 0) 291 goto err; 292 293 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 294 goto err; 295 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 296 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 297 goto err; 298 } 299 free (der); 300 der = NULL; 301 302 /* display the hash of the public key as it would appear 303 in OCSP requests */ 304 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 305 goto err; 306 307 if (!EVP_Digest(x->cert_info->key->public_key->data, 308 x->cert_info->key->public_key->length, 309 SHA1md, NULL, EVP_sha1(), NULL)) 310 goto err; 311 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 312 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 313 goto err; 314 } 315 BIO_printf(bp, "\n"); 316 317 return (1); 318 319 err: 320 free(der); 321 return (0); 322 } 323 LCRYPTO_ALIAS(X509_ocspid_print); 324 325 int 326 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) 327 { 328 const unsigned char *s; 329 int i, n; 330 331 n = sig->length; 332 s = sig->data; 333 for (i = 0; i < n; i++) { 334 if ((i % 18) == 0) { 335 if (BIO_write(bp, "\n", 1) <= 0) 336 return 0; 337 if (BIO_indent(bp, indent, indent) <= 0) 338 return 0; 339 } 340 if (BIO_printf(bp, "%02x%s", s[i], 341 ((i + 1) == n) ? "" : ":") <= 0) 342 return 0; 343 } 344 if (BIO_write(bp, "\n", 1) != 1) 345 return 0; 346 347 return 1; 348 } 349 LCRYPTO_ALIAS(X509_signature_dump); 350 351 int 352 X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig) 353 { 354 int sig_nid; 355 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 356 return 0; 357 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 358 return 0; 359 360 sig_nid = OBJ_obj2nid(sigalg->algorithm); 361 if (sig_nid != NID_undef) { 362 int pkey_nid, dig_nid; 363 const EVP_PKEY_ASN1_METHOD *ameth; 364 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { 365 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); 366 if (ameth && ameth->sig_print) 367 return ameth->sig_print(bp, sigalg, sig, 9, 0); 368 } 369 } 370 if (sig) 371 return X509_signature_dump(bp, sig, 9); 372 else if (BIO_puts(bp, "\n") <= 0) 373 return 0; 374 return 1; 375 } 376 LCRYPTO_ALIAS(X509_signature_print); 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 LCRYPTO_ALIAS(ASN1_TIME_print); 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 LCRYPTO_ALIAS(ASN1_GENERALIZEDTIME_print); 449 450 int 451 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') && 479 (v[11] >= '0') && (v[11] <= '9')) 480 s = (v[10] - '0') * 10 + (v[11] - '0'); 481 482 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", 483 mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0) 484 return (0); 485 else 486 return (1); 487 488 err: 489 BIO_write(bp, "Bad time value", 14); 490 return (0); 491 } 492 LCRYPTO_ALIAS(ASN1_UTCTIME_print); 493 494 /* NID with SN of 1-2 letters, which X509_NAME_print() historically included. */ 495 static int 496 x509_name_entry_include(const X509_NAME_ENTRY *ne) 497 { 498 int nid; 499 500 if ((nid = OBJ_obj2nid(ne->object)) == NID_undef) 501 return 0; 502 503 switch (nid) { 504 case NID_commonName: 505 case NID_surname: 506 case NID_countryName: 507 case NID_localityName: 508 case NID_stateOrProvinceName: 509 case NID_organizationName: 510 case NID_organizationalUnitName: 511 case NID_givenName: 512 case NID_domainComponent: /* XXX - doesn't really belong here */ 513 return 1; 514 } 515 516 return 0; 517 } 518 519 int 520 X509_NAME_print(BIO *bio, const X509_NAME *name, int obase) 521 { 522 CBB cbb; 523 uint8_t *buf = NULL; 524 size_t buf_len; 525 const X509_NAME_ENTRY *ne; 526 int i; 527 int started = 0; 528 int ret = 0; 529 530 if (!CBB_init(&cbb, 0)) 531 goto err; 532 533 for (i = 0; i < sk_X509_NAME_ENTRY_num(name->entries); i++) { 534 ne = sk_X509_NAME_ENTRY_value(name->entries, i); 535 536 if (!x509_name_entry_include(ne)) 537 continue; 538 539 if (started) { 540 if (!CBB_add_u8(&cbb, ',')) 541 goto err; 542 if (!CBB_add_u8(&cbb, ' ')) 543 goto err; 544 } 545 546 if (!X509_NAME_ENTRY_add_cbb(&cbb, ne)) 547 goto err; 548 549 started = 1; 550 } 551 552 if (!CBB_add_u8(&cbb, '\0')) 553 goto err; 554 555 if (!CBB_finish(&cbb, &buf, &buf_len)) 556 goto err; 557 558 if (BIO_printf(bio, "%s", buf) < 0) 559 goto err; 560 561 ret = 1; 562 563 err: 564 CBB_cleanup(&cbb); 565 free(buf); 566 567 return ret; 568 } 569 LCRYPTO_ALIAS(X509_NAME_print); 570