1 /* $OpenBSD: t_x509.c,v 1.32 2020/04/10 07:05:24 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 l = -1; 149 if (bs->length <= (int)sizeof(long)) 150 l = ASN1_INTEGER_get(bs); 151 if (l != -1) { 152 if (bs->type == V_ASN1_NEG_INTEGER) { 153 l = -l; 154 neg = "-"; 155 } else 156 neg = ""; 157 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", 158 neg, l, neg, l) <= 0) 159 goto err; 160 } else { 161 neg = (bs->type == V_ASN1_NEG_INTEGER) ? 162 " (Negative)" : ""; 163 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 164 goto err; 165 for (i = 0; i < bs->length; i++) { 166 if (BIO_printf(bp, "%02x%c", bs->data[i], 167 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 168 goto err; 169 } 170 } 171 172 } 173 174 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 175 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0) 176 goto err; 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), 183 nmindent, nmflags) < 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(bp, X509_get_subject_name(x), 206 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", 213 33) <= 0) 214 goto err; 215 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 216 goto err; 217 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 218 goto err; 219 if (BIO_puts(bp, "\n") <= 0) 220 goto err; 221 222 pkey = X509_get_pubkey(x); 223 if (pkey == NULL) { 224 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 225 ERR_print_errors(bp); 226 } else { 227 EVP_PKEY_print_public(bp, pkey, 16, NULL); 228 EVP_PKEY_free(pkey); 229 } 230 } 231 232 if (!(cflag & X509_FLAG_NO_EXTENSIONS)) 233 X509V3_extensions_print(bp, "X509v3 extensions", 234 ci->extensions, cflag, 8); 235 236 if (!(cflag & X509_FLAG_NO_SIGDUMP)) { 237 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0) 238 goto err; 239 } 240 if (!(cflag & X509_FLAG_NO_AUX)) { 241 if (!X509_CERT_AUX_print(bp, x->aux, 0)) 242 goto err; 243 } 244 ret = 1; 245 246 err: 247 free(m); 248 return (ret); 249 } 250 251 int 252 X509_ocspid_print(BIO *bp, X509 *x) 253 { 254 unsigned char *der = NULL; 255 unsigned char *dertmp; 256 int derlen; 257 int i; 258 unsigned char SHA1md[SHA_DIGEST_LENGTH]; 259 260 /* display the hash of the subject as it would appear 261 in OCSP requests */ 262 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 263 goto err; 264 derlen = i2d_X509_NAME(x->cert_info->subject, NULL); 265 if ((der = dertmp = malloc(derlen)) == NULL) 266 goto err; 267 i2d_X509_NAME(x->cert_info->subject, &dertmp); 268 269 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 270 goto err; 271 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 272 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 273 goto err; 274 } 275 free (der); 276 der = NULL; 277 278 /* display the hash of the public key as it would appear 279 in OCSP requests */ 280 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 281 goto err; 282 283 if (!EVP_Digest(x->cert_info->key->public_key->data, 284 x->cert_info->key->public_key->length, 285 SHA1md, NULL, EVP_sha1(), NULL)) 286 goto err; 287 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 288 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 289 goto err; 290 } 291 BIO_printf(bp, "\n"); 292 293 return (1); 294 295 err: 296 free(der); 297 return (0); 298 } 299 300 int 301 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) 302 { 303 const unsigned char *s; 304 int i, n; 305 306 n = sig->length; 307 s = sig->data; 308 for (i = 0; i < n; i++) { 309 if ((i % 18) == 0) { 310 if (BIO_write(bp, "\n", 1) <= 0) 311 return 0; 312 if (BIO_indent(bp, indent, indent) <= 0) 313 return 0; 314 } 315 if (BIO_printf(bp, "%02x%s", s[i], 316 ((i + 1) == n) ? "" : ":") <= 0) 317 return 0; 318 } 319 if (BIO_write(bp, "\n", 1) != 1) 320 return 0; 321 322 return 1; 323 } 324 325 int 326 X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig) 327 { 328 int sig_nid; 329 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 330 return 0; 331 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 332 return 0; 333 334 sig_nid = OBJ_obj2nid(sigalg->algorithm); 335 if (sig_nid != NID_undef) { 336 int pkey_nid, dig_nid; 337 const EVP_PKEY_ASN1_METHOD *ameth; 338 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { 339 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); 340 if (ameth && ameth->sig_print) 341 return ameth->sig_print(bp, sigalg, sig, 9, 0); 342 } 343 } 344 if (sig) 345 return X509_signature_dump(bp, sig, 9); 346 else if (BIO_puts(bp, "\n") <= 0) 347 return 0; 348 return 1; 349 } 350 351 int 352 ASN1_STRING_print(BIO *bp, const ASN1_STRING *v) 353 { 354 int i, n; 355 char buf[80]; 356 const char *p; 357 358 if (v == NULL) 359 return (0); 360 n = 0; 361 p = (const char *)v->data; 362 for (i = 0; i < v->length; i++) { 363 if ((p[i] > '~') || ((p[i] < ' ') && 364 (p[i] != '\n') && (p[i] != '\r'))) 365 buf[n] = '.'; 366 else 367 buf[n] = p[i]; 368 n++; 369 if (n >= 80) { 370 if (BIO_write(bp, buf, n) <= 0) 371 return (0); 372 n = 0; 373 } 374 } 375 if (n > 0) 376 if (BIO_write(bp, buf, n) <= 0) 377 return (0); 378 return (1); 379 } 380 381 int 382 ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) 383 { 384 if (tm->type == V_ASN1_UTCTIME) 385 return ASN1_UTCTIME_print(bp, tm); 386 if (tm->type == V_ASN1_GENERALIZEDTIME) 387 return ASN1_GENERALIZEDTIME_print(bp, tm); 388 BIO_write(bp, "Bad time value", 14); 389 return (0); 390 } 391 392 static const char *mon[12] = { 393 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 394 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 395 }; 396 397 int 398 ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 399 { 400 char *v; 401 int gmt = 0; 402 int i; 403 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 404 char *f = ""; 405 int f_len = 0; 406 407 i = tm->length; 408 v = (char *)tm->data; 409 410 if (i < 12) 411 goto err; 412 if (v[i-1] == 'Z') 413 gmt = 1; 414 for (i = 0; i < 12; i++) 415 if ((v[i] > '9') || (v[i] < '0')) 416 goto err; 417 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + 418 (v[2] - '0') * 10 + (v[3] - '0'); 419 M = (v[4] - '0') * 10 + (v[5] - '0'); 420 if ((M > 12) || (M < 1)) 421 goto err; 422 d = (v[6] - '0') * 10 + (v[7] - '0'); 423 h = (v[8] - '0') * 10 + (v[9] - '0'); 424 m = (v[10] - '0') * 10 + (v[11] - '0'); 425 if (tm->length >= 14 && 426 (v[12] >= '0') && (v[12] <= '9') && 427 (v[13] >= '0') && (v[13] <= '9')) { 428 s = (v[12] - '0') * 10 + (v[13] - '0'); 429 /* Check for fractions of seconds. */ 430 if (tm->length >= 15 && v[14] == '.') { 431 int l = tm->length; 432 f = &v[14]; /* The decimal point. */ 433 f_len = 1; 434 while (14 + f_len < l && f[f_len] >= '0' && 435 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, (gmt) ? " GMT" : "") <= 0) 442 return (0); 443 else 444 return (1); 445 446 err: 447 BIO_write(bp, "Bad time value", 14); 448 return (0); 449 } 450 451 int 452 ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 453 { 454 const char *v; 455 int gmt = 0; 456 int i; 457 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 458 459 i = tm->length; 460 v = (const char *)tm->data; 461 462 if (i < 10) 463 goto err; 464 if (v[i-1] == 'Z') 465 gmt = 1; 466 for (i = 0; i < 10; i++) 467 if ((v[i] > '9') || (v[i] < '0')) 468 goto err; 469 y = (v[0] - '0') * 10 + (v[1] - '0'); 470 if (y < 50) 471 y += 100; 472 M = (v[2] - '0') * 10 + (v[3] - '0'); 473 if ((M > 12) || (M < 1)) 474 goto err; 475 d = (v[4] - '0') * 10 + (v[5] - '0'); 476 h = (v[6] - '0') * 10 + (v[7] - '0'); 477 m = (v[8] - '0') * 10 + (v[9] - '0'); 478 if (tm->length >=12 && 479 (v[10] >= '0') && (v[10] <= '9') && 480 (v[11] >= '0') && (v[11] <= '9')) 481 s = (v[10] - '0') * 10 + (v[11] - '0'); 482 483 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", 484 mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0) 485 return (0); 486 else 487 return (1); 488 489 err: 490 BIO_write(bp, "Bad time value", 14); 491 return (0); 492 } 493 494 int 495 X509_NAME_print(BIO *bp, const X509_NAME *name, int obase) 496 { 497 char *s, *c, *b; 498 int ret = 0, l, i; 499 500 l = 80 - 2 - obase; 501 502 b = X509_NAME_oneline(name, NULL, 0); 503 if (b == NULL) 504 return 0; 505 if (*b == '\0') { 506 free(b); 507 return 1; 508 } 509 s = b + 1; /* skip the first slash */ 510 511 c = s; 512 for (;;) { 513 if (((*s == '/') && 514 ((s[1] >= 'A') && (s[1] <= 'Z') && 515 ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') && 516 (s[3] == '='))))) || (*s == '\0')) { 517 i = s - c; 518 if (BIO_write(bp, c, i) != i) 519 goto err; 520 c = s + 1; /* skip following slash */ 521 if (*s != '\0') { 522 if (BIO_write(bp, ", ", 2) != 2) 523 goto err; 524 } 525 l--; 526 } 527 if (*s == '\0') 528 break; 529 s++; 530 l--; 531 } 532 533 ret = 1; 534 if (0) { 535 err: 536 X509error(ERR_R_BUF_LIB); 537 } 538 free(b); 539 return (ret); 540 } 541