1 /* $OpenBSD: t_x509.c,v 1.31 2018/05/18 18:23:24 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 if (bs->length <= (int)sizeof(long)) { 149 l = ASN1_INTEGER_get(bs); 150 if (bs->type == V_ASN1_NEG_INTEGER) { 151 l = -l; 152 neg = "-"; 153 } else 154 neg = ""; 155 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", 156 neg, l, neg, l) <= 0) 157 goto err; 158 } else { 159 neg = (bs->type == V_ASN1_NEG_INTEGER) ? 160 " (Negative)" : ""; 161 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 162 goto err; 163 for (i = 0; i < bs->length; i++) { 164 if (BIO_printf(bp, "%02x%c", bs->data[i], 165 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 166 goto err; 167 } 168 } 169 170 } 171 172 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 173 if (X509_signature_print(bp, x->sig_alg, NULL) <= 0) 174 goto err; 175 } 176 177 if (!(cflag & X509_FLAG_NO_ISSUER)) { 178 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) 179 goto err; 180 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), 181 nmindent, nmflags) < 0) 182 goto err; 183 if (BIO_write(bp, "\n", 1) <= 0) 184 goto err; 185 } 186 if (!(cflag & X509_FLAG_NO_VALIDITY)) { 187 if (BIO_write(bp, " Validity\n", 17) <= 0) 188 goto err; 189 if (BIO_write(bp, " Not Before: ", 24) <= 0) 190 goto err; 191 if (!ASN1_TIME_print(bp, X509_get_notBefore(x))) 192 goto err; 193 if (BIO_write(bp, "\n Not After : ", 25) <= 0) 194 goto err; 195 if (!ASN1_TIME_print(bp, X509_get_notAfter(x))) 196 goto err; 197 if (BIO_write(bp, "\n", 1) <= 0) 198 goto err; 199 } 200 if (!(cflag & X509_FLAG_NO_SUBJECT)) { 201 if (BIO_printf(bp, " Subject:%c", mlch) <= 0) 202 goto err; 203 if (X509_NAME_print_ex(bp, X509_get_subject_name(x), 204 nmindent, nmflags) < 0) 205 goto err; 206 if (BIO_write(bp, "\n", 1) <= 0) 207 goto err; 208 } 209 if (!(cflag & X509_FLAG_NO_PUBKEY)) { 210 if (BIO_write(bp, " Subject Public Key Info:\n", 211 33) <= 0) 212 goto err; 213 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 214 goto err; 215 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 216 goto err; 217 if (BIO_puts(bp, "\n") <= 0) 218 goto err; 219 220 pkey = X509_get_pubkey(x); 221 if (pkey == NULL) { 222 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 223 ERR_print_errors(bp); 224 } else { 225 EVP_PKEY_print_public(bp, pkey, 16, NULL); 226 EVP_PKEY_free(pkey); 227 } 228 } 229 230 if (!(cflag & X509_FLAG_NO_EXTENSIONS)) 231 X509V3_extensions_print(bp, "X509v3 extensions", 232 ci->extensions, cflag, 8); 233 234 if (!(cflag & X509_FLAG_NO_SIGDUMP)) { 235 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0) 236 goto err; 237 } 238 if (!(cflag & X509_FLAG_NO_AUX)) { 239 if (!X509_CERT_AUX_print(bp, x->aux, 0)) 240 goto err; 241 } 242 ret = 1; 243 244 err: 245 free(m); 246 return (ret); 247 } 248 249 int 250 X509_ocspid_print(BIO *bp, X509 *x) 251 { 252 unsigned char *der = NULL; 253 unsigned char *dertmp; 254 int derlen; 255 int i; 256 unsigned char SHA1md[SHA_DIGEST_LENGTH]; 257 258 /* display the hash of the subject as it would appear 259 in OCSP requests */ 260 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 261 goto err; 262 derlen = i2d_X509_NAME(x->cert_info->subject, NULL); 263 if ((der = dertmp = malloc(derlen)) == NULL) 264 goto err; 265 i2d_X509_NAME(x->cert_info->subject, &dertmp); 266 267 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 268 goto err; 269 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 270 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 271 goto err; 272 } 273 free (der); 274 der = NULL; 275 276 /* display the hash of the public key as it would appear 277 in OCSP requests */ 278 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 279 goto err; 280 281 if (!EVP_Digest(x->cert_info->key->public_key->data, 282 x->cert_info->key->public_key->length, 283 SHA1md, NULL, EVP_sha1(), NULL)) 284 goto err; 285 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 286 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 287 goto err; 288 } 289 BIO_printf(bp, "\n"); 290 291 return (1); 292 293 err: 294 free(der); 295 return (0); 296 } 297 298 int 299 X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent) 300 { 301 const unsigned char *s; 302 int i, n; 303 304 n = sig->length; 305 s = sig->data; 306 for (i = 0; i < n; i++) { 307 if ((i % 18) == 0) { 308 if (BIO_write(bp, "\n", 1) <= 0) 309 return 0; 310 if (BIO_indent(bp, indent, indent) <= 0) 311 return 0; 312 } 313 if (BIO_printf(bp, "%02x%s", s[i], 314 ((i + 1) == n) ? "" : ":") <= 0) 315 return 0; 316 } 317 if (BIO_write(bp, "\n", 1) != 1) 318 return 0; 319 320 return 1; 321 } 322 323 int 324 X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, const ASN1_STRING *sig) 325 { 326 int sig_nid; 327 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 328 return 0; 329 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 330 return 0; 331 332 sig_nid = OBJ_obj2nid(sigalg->algorithm); 333 if (sig_nid != NID_undef) { 334 int pkey_nid, dig_nid; 335 const EVP_PKEY_ASN1_METHOD *ameth; 336 if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid)) { 337 ameth = EVP_PKEY_asn1_find(NULL, pkey_nid); 338 if (ameth && ameth->sig_print) 339 return ameth->sig_print(bp, sigalg, sig, 9, 0); 340 } 341 } 342 if (sig) 343 return X509_signature_dump(bp, sig, 9); 344 else if (BIO_puts(bp, "\n") <= 0) 345 return 0; 346 return 1; 347 } 348 349 int 350 ASN1_STRING_print(BIO *bp, const ASN1_STRING *v) 351 { 352 int i, n; 353 char buf[80]; 354 const char *p; 355 356 if (v == NULL) 357 return (0); 358 n = 0; 359 p = (const char *)v->data; 360 for (i = 0; i < v->length; i++) { 361 if ((p[i] > '~') || ((p[i] < ' ') && 362 (p[i] != '\n') && (p[i] != '\r'))) 363 buf[n] = '.'; 364 else 365 buf[n] = p[i]; 366 n++; 367 if (n >= 80) { 368 if (BIO_write(bp, buf, n) <= 0) 369 return (0); 370 n = 0; 371 } 372 } 373 if (n > 0) 374 if (BIO_write(bp, buf, n) <= 0) 375 return (0); 376 return (1); 377 } 378 379 int 380 ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) 381 { 382 if (tm->type == V_ASN1_UTCTIME) 383 return ASN1_UTCTIME_print(bp, tm); 384 if (tm->type == V_ASN1_GENERALIZEDTIME) 385 return ASN1_GENERALIZEDTIME_print(bp, tm); 386 BIO_write(bp, "Bad time value", 14); 387 return (0); 388 } 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 } 448 449 int 450 ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) 451 { 452 const char *v; 453 int gmt = 0; 454 int i; 455 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 456 457 i = tm->length; 458 v = (const char *)tm->data; 459 460 if (i < 10) 461 goto err; 462 if (v[i-1] == 'Z') 463 gmt = 1; 464 for (i = 0; i < 10; i++) 465 if ((v[i] > '9') || (v[i] < '0')) 466 goto err; 467 y = (v[0] - '0') * 10 + (v[1] - '0'); 468 if (y < 50) 469 y += 100; 470 M = (v[2] - '0') * 10 + (v[3] - '0'); 471 if ((M > 12) || (M < 1)) 472 goto err; 473 d = (v[4] - '0') * 10 + (v[5] - '0'); 474 h = (v[6] - '0') * 10 + (v[7] - '0'); 475 m = (v[8] - '0') * 10 + (v[9] - '0'); 476 if (tm->length >=12 && 477 (v[10] >= '0') && (v[10] <= '9') && 478 (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, (gmt) ? " GMT" : "") <= 0) 483 return (0); 484 else 485 return (1); 486 487 err: 488 BIO_write(bp, "Bad time value", 14); 489 return (0); 490 } 491 492 int 493 X509_NAME_print(BIO *bp, const X509_NAME *name, int obase) 494 { 495 char *s, *c, *b; 496 int ret = 0, l, i; 497 498 l = 80 - 2 - obase; 499 500 b = X509_NAME_oneline(name, NULL, 0); 501 if (b == NULL) 502 return 0; 503 if (*b == '\0') { 504 free(b); 505 return 1; 506 } 507 s = b + 1; /* skip the first slash */ 508 509 c = s; 510 for (;;) { 511 if (((*s == '/') && 512 ((s[1] >= 'A') && (s[1] <= 'Z') && 513 ((s[2] == '=') || ((s[2] >= 'A') && (s[2] <= 'Z') && 514 (s[3] == '='))))) || (*s == '\0')) { 515 i = s - c; 516 if (BIO_write(bp, c, i) != i) 517 goto err; 518 c = s + 1; /* skip following slash */ 519 if (*s != '\0') { 520 if (BIO_write(bp, ", ", 2) != 2) 521 goto err; 522 } 523 l--; 524 } 525 if (*s == '\0') 526 break; 527 s++; 528 l--; 529 } 530 531 ret = 1; 532 if (0) { 533 err: 534 X509error(ERR_R_BUF_LIB); 535 } 536 free(b); 537 return (ret); 538 } 539