1 /* $OpenBSD: t_x509.c,v 1.43 2023/07/07 19:37:52 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 "asn1_local.h" 81 #include "x509_local.h" 82 83 int 84 X509_print_fp(FILE *fp, X509 *x) 85 { 86 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 87 } 88 89 int 90 X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, unsigned long cflag) 91 { 92 BIO *b; 93 int ret; 94 95 if ((b = BIO_new(BIO_s_file())) == NULL) { 96 X509error(ERR_R_BUF_LIB); 97 return (0); 98 } 99 BIO_set_fp(b, fp, BIO_NOCLOSE); 100 ret = X509_print_ex(b, x, nmflag, cflag); 101 BIO_free(b); 102 return (ret); 103 } 104 105 int 106 X509_print(BIO *bp, X509 *x) 107 { 108 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 109 } 110 111 int 112 X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, unsigned long cflag) 113 { 114 long l; 115 int ret = 0, i; 116 char *m = NULL, mlch = ' '; 117 int nmindent = 0; 118 X509_CINF *ci; 119 ASN1_INTEGER *bs; 120 EVP_PKEY *pkey = NULL; 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 (l >= 0 && l <= 2) { 140 if (BIO_printf(bp, "%8sVersion: %ld (0x%lx)\n", 141 "", l + 1, l) <= 0) 142 goto err; 143 } else { 144 if (BIO_printf(bp, "%8sVersion: unknown (%ld)\n", 145 "", l) <= 0) 146 goto err; 147 } 148 } 149 if (!(cflag & X509_FLAG_NO_SERIAL)) { 150 if (BIO_write(bp, " Serial Number:", 22) <= 0) 151 goto err; 152 153 bs = X509_get_serialNumber(x); 154 l = -1; 155 if (bs->length <= (int)sizeof(long)) 156 l = ASN1_INTEGER_get(bs); 157 if (l >= 0) { 158 if (BIO_printf(bp, " %ld (0x%lx)\n", l, l) <= 0) 159 goto err; 160 } else { 161 const char *neg = ""; 162 163 if (bs->type == V_ASN1_NEG_INTEGER) 164 neg = " (Negative)"; 165 166 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 167 goto err; 168 for (i = 0; i < bs->length; i++) { 169 if (BIO_printf(bp, "%02x%c", bs->data[i], 170 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 171 goto err; 172 } 173 } 174 175 } 176 177 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 178 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0) 179 goto err; 180 } 181 182 if (!(cflag & X509_FLAG_NO_ISSUER)) { 183 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) 184 goto err; 185 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), 186 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 187 goto err; 188 if (BIO_write(bp, "\n", 1) <= 0) 189 goto err; 190 } 191 if (!(cflag & X509_FLAG_NO_VALIDITY)) { 192 if (BIO_write(bp, " Validity\n", 17) <= 0) 193 goto err; 194 if (BIO_write(bp, " Not Before: ", 24) <= 0) 195 goto err; 196 if (!ASN1_TIME_print(bp, X509_get_notBefore(x))) 197 goto err; 198 if (BIO_write(bp, "\n Not After : ", 25) <= 0) 199 goto err; 200 if (!ASN1_TIME_print(bp, X509_get_notAfter(x))) 201 goto err; 202 if (BIO_write(bp, "\n", 1) <= 0) 203 goto err; 204 } 205 if (!(cflag & X509_FLAG_NO_SUBJECT)) { 206 if (BIO_printf(bp, " Subject:%c", mlch) <= 0) 207 goto err; 208 if (X509_NAME_print_ex(bp, X509_get_subject_name(x), 209 nmindent, nmflags) < (nmflags == X509_FLAG_COMPAT ? 1 : 0)) 210 goto err; 211 if (BIO_write(bp, "\n", 1) <= 0) 212 goto err; 213 } 214 if (!(cflag & X509_FLAG_NO_PUBKEY)) { 215 if (BIO_write(bp, " Subject Public Key Info:\n", 216 33) <= 0) 217 goto err; 218 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 219 goto err; 220 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 221 goto err; 222 if (BIO_puts(bp, "\n") <= 0) 223 goto err; 224 225 pkey = X509_get_pubkey(x); 226 if (pkey == NULL) { 227 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 228 ERR_print_errors(bp); 229 } else { 230 EVP_PKEY_print_public(bp, pkey, 16, NULL); 231 EVP_PKEY_free(pkey); 232 } 233 } 234 235 if (!(cflag & X509_FLAG_NO_EXTENSIONS)) 236 X509V3_extensions_print(bp, "X509v3 extensions", 237 ci->extensions, cflag, 8); 238 239 if (!(cflag & X509_FLAG_NO_SIGDUMP)) { 240 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0) 241 goto err; 242 } 243 if (!(cflag & X509_FLAG_NO_AUX)) { 244 if (!X509_CERT_AUX_print(bp, x->aux, 0)) 245 goto err; 246 } 247 ret = 1; 248 249 err: 250 free(m); 251 return (ret); 252 } 253 254 int 255 X509_ocspid_print(BIO *bp, X509 *x) 256 { 257 unsigned char *der = NULL; 258 unsigned char *dertmp; 259 int derlen; 260 int i; 261 unsigned char SHA1md[SHA_DIGEST_LENGTH]; 262 263 /* display the hash of the subject as it would appear 264 in OCSP requests */ 265 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 266 goto err; 267 if ((derlen = i2d_X509_NAME(x->cert_info->subject, NULL)) <= 0) 268 goto err; 269 if ((der = dertmp = malloc(derlen)) == NULL) 270 goto err; 271 if (i2d_X509_NAME(x->cert_info->subject, &dertmp) <= 0) 272 goto err; 273 274 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 275 goto err; 276 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 277 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 278 goto err; 279 } 280 free (der); 281 der = NULL; 282 283 /* display the hash of the public key as it would appear 284 in OCSP requests */ 285 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 286 goto err; 287 288 if (!EVP_Digest(x->cert_info->key->public_key->data, 289 x->cert_info->key->public_key->length, 290 SHA1md, NULL, EVP_sha1(), NULL)) 291 goto err; 292 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 293 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 294 goto err; 295 } 296 BIO_printf(bp, "\n"); 297 298 return (1); 299 300 err: 301 free(der); 302 return (0); 303 } 304 305 int 306 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) 307 { 308 const unsigned char *s; 309 int i, n; 310 311 n = sig->length; 312 s = sig->data; 313 for (i = 0; i < n; i++) { 314 if ((i % 18) == 0) { 315 if (BIO_write(bp, "\n", 1) <= 0) 316 return 0; 317 if (BIO_indent(bp, indent, indent) <= 0) 318 return 0; 319 } 320 if (BIO_printf(bp, "%02x%s", s[i], 321 ((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 331 X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig) 332 { 333 int sig_nid; 334 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 335 return 0; 336 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 337 return 0; 338 339 sig_nid = OBJ_obj2nid(sigalg->algorithm); 340 if (sig_nid != NID_undef) { 341 int pkey_nid, dig_nid; 342 const EVP_PKEY_ASN1_METHOD *ameth; 343 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { 344 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); 345 if (ameth && ameth->sig_print) 346 return ameth->sig_print(bp, sigalg, sig, 9, 0); 347 } 348 } 349 if (sig) 350 return X509_signature_dump(bp, sig, 9); 351 else if (BIO_puts(bp, "\n") <= 0) 352 return 0; 353 return 1; 354 } 355 356 int 357 ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) 358 { 359 if (tm->type == V_ASN1_UTCTIME) 360 return ASN1_UTCTIME_print(bp, tm); 361 if (tm->type == V_ASN1_GENERALIZEDTIME) 362 return ASN1_GENERALIZEDTIME_print(bp, tm); 363 BIO_write(bp, "Bad time value", 14); 364 return (0); 365 } 366 LCRYPTO_ALIAS(ASN1_TIME_print); 367 368 static const char *mon[12] = { 369 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 370 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 371 }; 372 373 int 374 ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 375 { 376 char *v; 377 int gmt = 0; 378 int i; 379 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 380 char *f = ""; 381 int f_len = 0; 382 383 i = tm->length; 384 v = (char *)tm->data; 385 386 if (i < 12) 387 goto err; 388 if (v[i-1] == 'Z') 389 gmt = 1; 390 for (i = 0; i < 12; i++) 391 if ((v[i] > '9') || (v[i] < '0')) 392 goto err; 393 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + 394 (v[2] - '0') * 10 + (v[3] - '0'); 395 M = (v[4] - '0') * 10 + (v[5] - '0'); 396 if ((M > 12) || (M < 1)) 397 goto err; 398 d = (v[6] - '0') * 10 + (v[7] - '0'); 399 h = (v[8] - '0') * 10 + (v[9] - '0'); 400 m = (v[10] - '0') * 10 + (v[11] - '0'); 401 if (tm->length >= 14 && 402 (v[12] >= '0') && (v[12] <= '9') && 403 (v[13] >= '0') && (v[13] <= '9')) { 404 s = (v[12] - '0') * 10 + (v[13] - '0'); 405 /* Check for fractions of seconds. */ 406 if (tm->length >= 15 && v[14] == '.') { 407 int l = tm->length; 408 f = &v[14]; /* The decimal point. */ 409 f_len = 1; 410 while (14 + f_len < l && f[f_len] >= '0' && 411 f[f_len] <= '9') 412 ++f_len; 413 } 414 } 415 416 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s", 417 mon[M - 1], d, h, m, s, f_len, f, y, (gmt) ? " GMT" : "") <= 0) 418 return (0); 419 else 420 return (1); 421 422 err: 423 BIO_write(bp, "Bad time value", 14); 424 return (0); 425 } 426 LCRYPTO_ALIAS(ASN1_GENERALIZEDTIME_print); 427 428 int 429 ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 430 { 431 const char *v; 432 int gmt = 0; 433 int i; 434 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 435 436 i = tm->length; 437 v = (const char *)tm->data; 438 439 if (i < 10) 440 goto err; 441 if (v[i-1] == 'Z') 442 gmt = 1; 443 for (i = 0; i < 10; i++) 444 if ((v[i] > '9') || (v[i] < '0')) 445 goto err; 446 y = (v[0] - '0') * 10 + (v[1] - '0'); 447 if (y < 50) 448 y += 100; 449 M = (v[2] - '0') * 10 + (v[3] - '0'); 450 if ((M > 12) || (M < 1)) 451 goto err; 452 d = (v[4] - '0') * 10 + (v[5] - '0'); 453 h = (v[6] - '0') * 10 + (v[7] - '0'); 454 m = (v[8] - '0') * 10 + (v[9] - '0'); 455 if (tm->length >=12 && 456 (v[10] >= '0') && (v[10] <= '9') && 457 (v[11] >= '0') && (v[11] <= '9')) 458 s = (v[10] - '0') * 10 + (v[11] - '0'); 459 460 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", 461 mon[M - 1], d, h, m, s, y + 1900, (gmt) ? " GMT" : "") <= 0) 462 return (0); 463 else 464 return (1); 465 466 err: 467 BIO_write(bp, "Bad time value", 14); 468 return (0); 469 } 470 LCRYPTO_ALIAS(ASN1_UTCTIME_print); 471 472 int 473 X509_NAME_print(BIO *bp, const X509_NAME *name, int obase) 474 { 475 char *s, *c, *b; 476 int i; 477 int ret = 0; 478 479 b = X509_NAME_oneline(name, NULL, 0); 480 if (b == NULL) 481 return 0; 482 if (*b == '\0') { 483 free(b); 484 return 1; 485 } 486 s = b + 1; /* skip the first slash */ 487 488 c = s; 489 for (;;) { 490 if (((*s == '/') && 491 ((s[1] >= 'A') && (s[1] <= 'Z') && 492 ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') && 493 (s[3] == '='))))) || (*s == '\0')) { 494 i = s - c; 495 if (BIO_write(bp, c, i) != i) 496 goto err; 497 c = s + 1; /* skip following slash */ 498 if (*s != '\0') { 499 if (BIO_write(bp, ", ", 2) != 2) 500 goto err; 501 } 502 } 503 if (*s == '\0') 504 break; 505 s++; 506 } 507 508 ret = 1; 509 if (0) { 510 err: 511 X509error(ERR_R_BUF_LIB); 512 } 513 free(b); 514 return (ret); 515 } 516