1/* $OpenBSD: t_x509.c,v 1.45 2024/04/09 13:55:02 beck 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 "evp_local.h" 81#include "x509_local.h" 82 83int 84X509_print_fp(FILE *fp, X509 *x) 85{ 86 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 87} 88LCRYPTO_ALIAS(X509_print_fp); 89 90int 91X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, unsigned long cflag) 92{ 93 BIO *b; 94 int ret; 95 96 if ((b = BIO_new(BIO_s_file())) == NULL) { 97 X509error(ERR_R_BUF_LIB); 98 return (0); 99 } 100 BIO_set_fp(b, fp, BIO_NOCLOSE); 101 ret = X509_print_ex(b, x, nmflag, cflag); 102 BIO_free(b); 103 return (ret); 104} 105LCRYPTO_ALIAS(X509_print_ex_fp); 106 107int 108X509_print(BIO *bp, X509 *x) 109{ 110 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 111} 112LCRYPTO_ALIAS(X509_print); 113 114int 115X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, unsigned long cflag) 116{ 117 long l; 118 int ret = 0, i; 119 char *m = NULL, mlch = ' '; 120 int nmindent = 0; 121 X509_CINF *ci; 122 ASN1_INTEGER *bs; 123 EVP_PKEY *pkey = NULL; 124 125 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) { 126 mlch = '\n'; 127 nmindent = 12; 128 } 129 130 if (nmflags == X509_FLAG_COMPAT) 131 nmindent = 16; 132 133 ci = x->cert_info; 134 if (!(cflag & X509_FLAG_NO_HEADER)) { 135 if (BIO_write(bp, "Certificate:\n", 13) <= 0) 136 goto err; 137 if (BIO_write(bp, " Data:\n", 10) <= 0) 138 goto err; 139 } 140 if (!(cflag & X509_FLAG_NO_VERSION)) { 141 l = X509_get_version(x); 142 if (l >= 0 && l <= 2) { 143 if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", 144 "", l + 1, l) <= 0) 145 goto err; 146 } else { 147 if (BIO_printf(bp, "%8sVersion: unknown (%ld)\n", 148 "", l) <= 0) 149 goto err; 150 } 151 } 152 if (!(cflag & X509_FLAG_NO_SERIAL)) { 153 if (BIO_write(bp, " Serial Number:", 22) <= 0) 154 goto err; 155 156 bs = X509_get_serialNumber(x); 157 l = -1; 158 if (bs->length <= (int)sizeof(long)) 159 l = ASN1_INTEGER_get(bs); 160 if (l >= 0) { 161 if (BIO_printf(bp, " %ld (0x%lx)\n", l, l) <= 0) 162 goto err; 163 } else { 164 const char *neg = ""; 165 166 if (bs->type == V_ASN1_NEG_INTEGER) 167 neg = " (Negative)"; 168 169 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 170 goto err; 171 for (i = 0; i < bs->length; i++) { 172 if (BIO_printf(bp, "%02x%c", bs->data[i], 173 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 174 goto err; 175 } 176 } 177 178 } 179 180 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 181 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0) 182 goto err; 183 } 184 185 if (!(cflag & X509_FLAG_NO_ISSUER)) { 186 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) 187 goto err; 188 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), 189 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 190 goto err; 191 if (BIO_write(bp, "\n", 1) <= 0) 192 goto err; 193 } 194 if (!(cflag & X509_FLAG_NO_VALIDITY)) { 195 if (BIO_write(bp, " Validity\n", 17) <= 0) 196 goto err; 197 if (BIO_write(bp, " Not Before: ", 24) <= 0) 198 goto err; 199 if (!ASN1_TIME_print(bp, X509_get_notBefore(x))) 200 goto err; 201 if (BIO_write(bp, "\n Not After : ", 25) <= 0) 202 goto err; 203 if (!ASN1_TIME_print(bp, X509_get_notAfter(x))) 204 goto err; 205 if (BIO_write(bp, "\n", 1) <= 0) 206 goto err; 207 } 208 if (!(cflag & X509_FLAG_NO_SUBJECT)) { 209 if (BIO_printf(bp, " Subject:%c", mlch) <= 0) 210 goto err; 211 if (X509_NAME_print_ex(bp, X509_get_subject_name(x), 212 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 213 goto err; 214 if (BIO_write(bp, "\n", 1) <= 0) 215 goto err; 216 } 217 if (!(cflag & X509_FLAG_NO_PUBKEY)) { 218 if (BIO_write(bp, " Subject Public Key Info:\n", 219 33) <= 0) 220 goto err; 221 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 222 goto err; 223 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 224 goto err; 225 if (BIO_puts(bp, "\n") <= 0) 226 goto err; 227 228 pkey = X509_get_pubkey(x); 229 if (pkey == NULL) { 230 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 231 ERR_print_errors(bp); 232 } else { 233 EVP_PKEY_print_public(bp, pkey, 16, NULL); 234 EVP_PKEY_free(pkey); 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; 251 252 err: 253 free(m); 254 return (ret); 255} 256LCRYPTO_ALIAS(X509_print_ex); 257 258int 259X509_ocspid_print(BIO *bp, X509 *x) 260{ 261 unsigned char *der = NULL; 262 unsigned char *dertmp; 263 int derlen; 264 int i; 265 unsigned char SHA1md[SHA_DIGEST_LENGTH]; 266 267 /* display the hash of the subject as it would appear 268 in OCSP requests */ 269 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 270 goto err; 271 if ((derlen = i2d_X509_NAME(x->cert_info->subject, NULL)) <= 0) 272 goto err; 273 if ((der = dertmp = malloc(derlen)) == NULL) 274 goto err; 275 if (i2d_X509_NAME(x->cert_info->subject, &dertmp) <= 0) 276 goto err; 277 278 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 279 goto err; 280 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 281 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 282 goto err; 283 } 284 free (der); 285 der = NULL; 286 287 /* display the hash of the public key as it would appear 288 in OCSP requests */ 289 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 290 goto err; 291 292 if (!EVP_Digest(x->cert_info->key->public_key->data, 293 x->cert_info->key->public_key->length, 294 SHA1md, NULL, EVP_sha1(), NULL)) 295 goto err; 296 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 297 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 298 goto err; 299 } 300 BIO_printf(bp, "\n"); 301 302 return (1); 303 304 err: 305 free(der); 306 return (0); 307} 308LCRYPTO_ALIAS(X509_ocspid_print); 309 310int 311X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) 312{ 313 const unsigned char *s; 314 int i, n; 315 316 n = sig->length; 317 s = sig->data; 318 for (i = 0; i < n; i++) { 319 if ((i % 18) == 0) { 320 if (BIO_write(bp, "\n", 1) <= 0) 321 return 0; 322 if (BIO_indent(bp, indent, indent) <= 0) 323 return 0; 324 } 325 if (BIO_printf(bp, "%02x%s", s[i], 326 ((i + 1) == n) ? "" : ":") <= 0) 327 return 0; 328 } 329 if (BIO_write(bp, "\n", 1) != 1) 330 return 0; 331 332 return 1; 333} 334LCRYPTO_ALIAS(X509_signature_dump); 335 336int 337X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig) 338{ 339 int sig_nid; 340 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 341 return 0; 342 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 343 return 0; 344 345 sig_nid = OBJ_obj2nid(sigalg->algorithm); 346 if (sig_nid != NID_undef) { 347 int pkey_nid, dig_nid; 348 const EVP_PKEY_ASN1_METHOD *ameth; 349 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { 350 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); 351 if (ameth && ameth->sig_print) 352 return ameth->sig_print(bp, sigalg, sig, 9, 0); 353 } 354 } 355 if (sig) 356 return X509_signature_dump(bp, sig, 9); 357 else if (BIO_puts(bp, "\n") <= 0) 358 return 0; 359 return 1; 360} 361LCRYPTO_ALIAS(X509_signature_print); 362 363int 364ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) 365{ 366 if (tm->type == V_ASN1_UTCTIME) 367 return ASN1_UTCTIME_print(bp, tm); 368 if (tm->type == V_ASN1_GENERALIZEDTIME) 369 return ASN1_GENERALIZEDTIME_print(bp, tm); 370 BIO_write(bp, "Bad time value", 14); 371 return (0); 372} 373LCRYPTO_ALIAS(ASN1_TIME_print); 374 375static const char *mon[12] = { 376 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 377 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 378}; 379 380int 381ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 382{ 383 char *v; 384 int gmt = 0; 385 int i; 386 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 387 char *f = ""; 388 int f_len = 0; 389 390 i = tm->length; 391 v = (char *)tm->data; 392 393 if (i < 12) 394 goto err; 395 if (v[i-1] == 'Z') 396 gmt = 1; 397 for (i = 0; i < 12; i++) 398 if ((v[i] > '9') || (v[i] < '0')) 399 goto err; 400 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + 401 (v[2] - '0') * 10 + (v[3] - '0'); 402 M = (v[4] - '0') * 10 + (v[5] - '0'); 403 if ((M > 12) || (M < 1)) 404 goto err; 405 d = (v[6] - '0') * 10 + (v[7] - '0'); 406 h = (v[8] - '0') * 10 + (v[9] - '0'); 407 m = (v[10] - '0') * 10 + (v[11] - '0'); 408 if (tm->length >= 14 && 409 (v[12] >= '0') && (v[12] <= '9') && 410 (v[13] >= '0') && (v[13] <= '9')) { 411 s = (v[12] - '0') * 10 + (v[13] - '0'); 412 /* Check for fractions of seconds. */ 413 if (tm->length >= 15 && v[14] == '.') { 414 int l = tm->length; 415 f = &v[14]; /* The decimal point. */ 416 f_len = 1; 417 while (14 + f_len < l && f[f_len] >= '0' && 418 f[f_len] <= '9') 419 ++f_len; 420 } 421 } 422 423 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s", 424 mon[M - 1], d, h, m, s, f_len, f, y, (gmt) ? " GMT" : "") <= 0) 425 return (0); 426 else 427 return (1); 428 429 err: 430 BIO_write(bp, "Bad time value", 14); 431 return (0); 432} 433LCRYPTO_ALIAS(ASN1_GENERALIZEDTIME_print); 434 435int 436ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 437{ 438 const char *v; 439 int gmt = 0; 440 int i; 441 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 442 443 i = tm->length; 444 v = (const char *)tm->data; 445 446 if (i < 10) 447 goto err; 448 if (v[i-1] == 'Z') 449 gmt = 1; 450 for (i = 0; i < 10; i++) 451 if ((v[i] > '9') || (v[i] < '0')) 452 goto err; 453 y = (v[0] - '0') * 10 + (v[1] - '0'); 454 if (y < 50) 455 y += 100; 456 M = (v[2] - '0') * 10 + (v[3] - '0'); 457 if ((M > 12) || (M < 1)) 458 goto err; 459 d = (v[4] - '0') * 10 + (v[5] - '0'); 460 h = (v[6] - '0') * 10 + (v[7] - '0'); 461 m = (v[8] - '0') * 10 + (v[9] - '0'); 462 if (tm->length >=12 && 463 (v[10] >= '0') && (v[10] <= '9') && 464 (v[11] >= '0') && (v[11] <= '9')) 465 s = (v[10] - '0') * 10 + (v[11] - '0'); 466 467 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", 468 mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0) 469 return (0); 470 else 471 return (1); 472 473 err: 474 BIO_write(bp, "Bad time value", 14); 475 return (0); 476} 477LCRYPTO_ALIAS(ASN1_UTCTIME_print); 478 479int 480X509_NAME_print(BIO *bp, const X509_NAME *name, int obase) 481{ 482 char *s, *c, *b; 483 int i; 484 int ret = 0; 485 486 b = X509_NAME_oneline(name, NULL, 0); 487 if (b == NULL) 488 return 0; 489 if (*b == '\0') { 490 free(b); 491 return 1; 492 } 493 s = b + 1; /* skip the first slash */ 494 495 c = s; 496 for (;;) { 497 if (((*s == '/') && 498 ((s[1] >= 'A') && (s[1] <= 'Z') && 499 ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') && 500 (s[3] == '='))))) || (*s == '\0')) { 501 i = s - c; 502 if (BIO_write(bp, c, i) != i) 503 goto err; 504 c = s + 1; /* skip following slash */ 505 if (*s != '\0') { 506 if (BIO_write(bp, ", ", 2) != 2) 507 goto err; 508 } 509 } 510 if (*s == '\0') 511 break; 512 s++; 513 } 514 515 ret = 1; 516 if (0) { 517 err: 518 X509error(ERR_R_BUF_LIB); 519 } 520 free(b); 521 return (ret); 522} 523LCRYPTO_ALIAS(X509_NAME_print); 524