1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <ctype.h> 58 #include <openssl/asn1.h> 59 #include <openssl/bio.h> 60 #include <openssl/digest.h> 61 #include <openssl/err.h> 62 #include <openssl/evp.h> 63 #include <openssl/mem.h> 64 #include <openssl/obj.h> 65 #include <openssl/x509.h> 66 #include <openssl/x509v3.h> 67 68 #include "internal.h" 69 70 71 #ifndef OPENSSL_NO_FP_API 72 int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, 73 unsigned long cflag) 74 { 75 BIO *b; 76 int ret; 77 78 if ((b = BIO_new(BIO_s_file())) == NULL) { 79 OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB); 80 return (0); 81 } 82 BIO_set_fp(b, fp, BIO_NOCLOSE); 83 ret = X509_print_ex(b, x, nmflag, cflag); 84 BIO_free(b); 85 return (ret); 86 } 87 88 int X509_print_fp(FILE *fp, X509 *x) 89 { 90 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 91 } 92 #endif 93 94 int X509_print(BIO *bp, X509 *x) 95 { 96 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT); 97 } 98 99 int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, 100 unsigned long cflag) 101 { 102 long l; 103 int ret = 0, i; 104 char *m = NULL, mlch = ' '; 105 int nmindent = 0; 106 X509_CINF *ci; 107 ASN1_INTEGER *bs; 108 EVP_PKEY *pkey = NULL; 109 const char *neg; 110 111 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) { 112 mlch = '\n'; 113 nmindent = 12; 114 } 115 116 if (nmflags == X509_FLAG_COMPAT) 117 nmindent = 16; 118 119 ci = x->cert_info; 120 if (!(cflag & X509_FLAG_NO_HEADER)) { 121 if (BIO_write(bp, "Certificate:\n", 13) <= 0) 122 goto err; 123 if (BIO_write(bp, " Data:\n", 10) <= 0) 124 goto err; 125 } 126 if (!(cflag & X509_FLAG_NO_VERSION)) { 127 l = X509_get_version(x); 128 if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0) 129 goto err; 130 } 131 if (!(cflag & X509_FLAG_NO_SERIAL)) { 132 133 if (BIO_write(bp, " Serial Number:", 22) <= 0) 134 goto err; 135 136 bs = X509_get_serialNumber(x); 137 if (bs->length < (int)sizeof(long) 138 || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) { 139 l = ASN1_INTEGER_get(bs); 140 if (bs->type == V_ASN1_NEG_INTEGER) { 141 l = -l; 142 neg = "-"; 143 } else 144 neg = ""; 145 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0) 146 goto err; 147 } else { 148 neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : ""; 149 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0) 150 goto err; 151 152 for (i = 0; i < bs->length; i++) { 153 if (BIO_printf(bp, "%02x%c", bs->data[i], 154 ((i + 1 == bs->length) ? '\n' : ':')) <= 0) 155 goto err; 156 } 157 } 158 159 } 160 161 if (!(cflag & X509_FLAG_NO_SIGNAME)) { 162 if (X509_signature_print(bp, ci->signature, NULL) <= 0) 163 goto err; 164 } 165 166 if (!(cflag & X509_FLAG_NO_ISSUER)) { 167 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0) 168 goto err; 169 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags) 170 < 0) 171 goto err; 172 if (BIO_write(bp, "\n", 1) <= 0) 173 goto err; 174 } 175 if (!(cflag & X509_FLAG_NO_VALIDITY)) { 176 if (BIO_write(bp, " Validity\n", 17) <= 0) 177 goto err; 178 if (BIO_write(bp, " Not Before: ", 24) <= 0) 179 goto err; 180 if (!ASN1_TIME_print(bp, X509_get_notBefore(x))) 181 goto err; 182 if (BIO_write(bp, "\n Not After : ", 25) <= 0) 183 goto err; 184 if (!ASN1_TIME_print(bp, X509_get_notAfter(x))) 185 goto err; 186 if (BIO_write(bp, "\n", 1) <= 0) 187 goto err; 188 } 189 if (!(cflag & X509_FLAG_NO_SUBJECT)) { 190 if (BIO_printf(bp, " Subject:%c", mlch) <= 0) 191 goto err; 192 if (X509_NAME_print_ex 193 (bp, X509_get_subject_name(x), nmindent, nmflags) < 0) 194 goto err; 195 if (BIO_write(bp, "\n", 1) <= 0) 196 goto err; 197 } 198 if (!(cflag & X509_FLAG_NO_PUBKEY)) { 199 if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0) 200 goto err; 201 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0) 202 goto err; 203 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0) 204 goto err; 205 if (BIO_puts(bp, "\n") <= 0) 206 goto err; 207 208 pkey = X509_get_pubkey(x); 209 if (pkey == NULL) { 210 BIO_printf(bp, "%12sUnable to load Public Key\n", ""); 211 ERR_print_errors(bp); 212 } else { 213 EVP_PKEY_print_public(bp, pkey, 16, NULL); 214 EVP_PKEY_free(pkey); 215 } 216 } 217 218 if (!(cflag & X509_FLAG_NO_IDS)) { 219 if (ci->issuerUID) { 220 if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0) 221 goto err; 222 if (!X509_signature_dump(bp, ci->issuerUID, 12)) 223 goto err; 224 } 225 if (ci->subjectUID) { 226 if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0) 227 goto err; 228 if (!X509_signature_dump(bp, ci->subjectUID, 12)) 229 goto err; 230 } 231 } 232 233 if (!(cflag & X509_FLAG_NO_EXTENSIONS)) 234 X509V3_extensions_print(bp, "X509v3 extensions", 235 ci->extensions, cflag, 8); 236 237 if (!(cflag & X509_FLAG_NO_SIGDUMP)) { 238 if (X509_signature_print(bp, x->sig_alg, x->signature) <= 0) 239 goto err; 240 } 241 if (!(cflag & X509_FLAG_NO_AUX)) { 242 if (!X509_CERT_AUX_print(bp, x->aux, 0)) 243 goto err; 244 } 245 ret = 1; 246 err: 247 if (m != NULL) 248 OPENSSL_free(m); 249 return (ret); 250 } 251 252 int 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 /* 261 * display the hash of the subject as it would appear in OCSP requests 262 */ 263 if (BIO_printf(bp, " Subject OCSP hash: ") <= 0) 264 goto err; 265 derlen = i2d_X509_NAME(x->cert_info->subject, NULL); 266 if ((der = dertmp = (unsigned char *)OPENSSL_malloc(derlen)) == NULL) 267 goto err; 268 i2d_X509_NAME(x->cert_info->subject, &dertmp); 269 270 if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL)) 271 goto err; 272 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 273 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 274 goto err; 275 } 276 OPENSSL_free(der); 277 der = NULL; 278 279 /* 280 * display the hash of the public key as it would appear in OCSP requests 281 */ 282 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0) 283 goto err; 284 285 if (!EVP_Digest(x->cert_info->key->public_key->data, 286 x->cert_info->key->public_key->length, 287 SHA1md, NULL, EVP_sha1(), NULL)) 288 goto err; 289 for (i = 0; i < SHA_DIGEST_LENGTH; i++) { 290 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0) 291 goto err; 292 } 293 BIO_printf(bp, "\n"); 294 295 return (1); 296 err: 297 if (der != NULL) 298 OPENSSL_free(der); 299 return (0); 300 } 301 302 int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg, 303 const ASN1_STRING *sig) 304 { 305 if (BIO_puts(bp, " Signature Algorithm: ") <= 0) 306 return 0; 307 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) 308 return 0; 309 310 /* RSA-PSS signatures have parameters to print. */ 311 int sig_nid = OBJ_obj2nid(sigalg->algorithm); 312 if (sig_nid == NID_rsassaPss && 313 !x509_print_rsa_pss_params(bp, sigalg, 9, 0)) { 314 return 0; 315 } 316 317 if (sig) 318 return X509_signature_dump(bp, sig, 9); 319 else if (BIO_puts(bp, "\n") <= 0) 320 return 0; 321 return 1; 322 } 323 324 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v) 325 { 326 int i, n; 327 char buf[80]; 328 const char *p; 329 330 if (v == NULL) 331 return (0); 332 n = 0; 333 p = (const char *)v->data; 334 for (i = 0; i < v->length; i++) { 335 if ((p[i] > '~') || ((p[i] < ' ') && 336 (p[i] != '\n') && (p[i] != '\r'))) 337 buf[n] = '.'; 338 else 339 buf[n] = p[i]; 340 n++; 341 if (n >= 80) { 342 if (BIO_write(bp, buf, n) <= 0) 343 return (0); 344 n = 0; 345 } 346 } 347 if (n > 0) 348 if (BIO_write(bp, buf, n) <= 0) 349 return (0); 350 return (1); 351 } 352 353 int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm) 354 { 355 if (tm->type == V_ASN1_UTCTIME) 356 return ASN1_UTCTIME_print(bp, tm); 357 if (tm->type == V_ASN1_GENERALIZEDTIME) 358 return ASN1_GENERALIZEDTIME_print(bp, tm); 359 BIO_write(bp, "Bad time value", 14); 360 return (0); 361 } 362 363 static const char *const mon[12] = { 364 "Jan", "Feb", "Mar", "Apr", "May", "Jun", 365 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" 366 }; 367 368 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm) 369 { 370 char *v; 371 int gmt = 0; 372 int i; 373 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0; 374 char *f = NULL; 375 int f_len = 0; 376 377 i = tm->length; 378 v = (char *)tm->data; 379 380 if (i < 12) 381 goto err; 382 if (v[i - 1] == 'Z') 383 gmt = 1; 384 for (i = 0; i < 12; i++) 385 if ((v[i] > '9') || (v[i] < '0')) 386 goto err; 387 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + (v[2] - '0') * 10 + (v[3] - 388 '0'); 389 M = (v[4] - '0') * 10 + (v[5] - '0'); 390 if ((M > 12) || (M < 1)) 391 goto err; 392 d = (v[6] - '0') * 10 + (v[7] - '0'); 393 h = (v[8] - '0') * 10 + (v[9] - '0'); 394 m = (v[10] - '0') * 10 + (v[11] - '0'); 395 if (tm->length >= 14 && 396 (v[12] >= '0') && (v[12] <= '9') && 397 (v[13] >= '0') && (v[13] <= '9')) { 398 s = (v[12] - '0') * 10 + (v[13] - '0'); 399 /* Check for fractions of seconds. */ 400 if (tm->length >= 15 && v[14] == '.') { 401 int l = tm->length; 402 f = &v[14]; /* The decimal point. */ 403 f_len = 1; 404 while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9') 405 ++f_len; 406 } 407 } 408 409 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s", 410 mon[M - 1], d, h, m, s, f_len, f, y, 411 (gmt) ? " GMT" : "") <= 0) 412 return (0); 413 else 414 return (1); 415 err: 416 BIO_write(bp, "Bad time value", 14); 417 return (0); 418 } 419 420 // consume_two_digits is a helper function for ASN1_UTCTIME_print. If |*v|, 421 // assumed to be |*len| bytes long, has two leading digits, updates |*out| with 422 // their value, updates |v| and |len|, and returns one. Otherwise, returns 423 // zero. 424 static int consume_two_digits(int* out, const char **v, int *len) { 425 if (*len < 2|| !isdigit((*v)[0]) || !isdigit((*v)[1])) { 426 return 0; 427 } 428 *out = ((*v)[0] - '0') * 10 + ((*v)[1] - '0'); 429 *len -= 2; 430 *v += 2; 431 return 1; 432 } 433 434 // consume_zulu_timezone is a helper function for ASN1_UTCTIME_print. If |*v|, 435 // assumed to be |*len| bytes long, starts with "Z" then it updates |*v| and 436 // |*len| and returns one. Otherwise returns zero. 437 static int consume_zulu_timezone(const char **v, int *len) { 438 if (*len == 0 || (*v)[0] != 'Z') { 439 return 0; 440 } 441 442 *len -= 1; 443 *v += 1; 444 return 1; 445 } 446 447 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) { 448 const char *v = (const char *)tm->data; 449 int len = tm->length; 450 int Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0; 451 452 // YYMMDDhhmm are required to be present. 453 if (!consume_two_digits(&Y, &v, &len) || 454 !consume_two_digits(&M, &v, &len) || 455 !consume_two_digits(&D, &v, &len) || 456 !consume_two_digits(&h, &v, &len) || 457 !consume_two_digits(&m, &v, &len)) { 458 goto err; 459 } 460 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires seconds 461 // to be present, but historically this code has forgiven its absence. 462 consume_two_digits(&s, &v, &len); 463 464 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, specifies this 465 // interpretation of the year. 466 if (Y < 50) { 467 Y += 2000; 468 } else { 469 Y += 1900; 470 } 471 if (M > 12 || M == 0) { 472 goto err; 473 } 474 if (D > 31 || D == 0) { 475 goto err; 476 } 477 if (h > 23 || m > 59 || s > 60) { 478 goto err; 479 } 480 481 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires the "Z" 482 // to be present, but historically this code has forgiven its absence. 483 const int is_gmt = consume_zulu_timezone(&v, &len); 484 485 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, does not permit 486 // the specification of timezones using the +hhmm / -hhmm syntax, which is 487 // the only other thing that might legitimately be found at the end. 488 if (len) { 489 goto err; 490 } 491 492 return BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", mon[M - 1], D, h, m, s, Y, 493 is_gmt ? " GMT" : "") > 0; 494 495 err: 496 BIO_write(bp, "Bad time value", 14); 497 return 0; 498 } 499 500 int X509_NAME_print(BIO *bp, X509_NAME *name, int obase) 501 { 502 char *s, *c, *b; 503 int ret = 0, l, i; 504 505 l = 80 - 2 - obase; 506 507 b = X509_NAME_oneline(name, NULL, 0); 508 if (!b) 509 return 0; 510 if (!*b) { 511 OPENSSL_free(b); 512 return 1; 513 } 514 s = b + 1; /* skip the first slash */ 515 516 c = s; 517 for (;;) { 518 if (((*s == '/') && 519 ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') || 520 ((s[2] >= 'A') 521 && (s[2] <= 'Z') 522 && (s[3] == '=')) 523 ))) || (*s == '\0')) { 524 i = s - c; 525 if (BIO_write(bp, c, i) != i) 526 goto err; 527 c = s + 1; /* skip following slash */ 528 if (*s != '\0') { 529 if (BIO_write(bp, ", ", 2) != 2) 530 goto err; 531 } 532 l--; 533 } 534 if (*s == '\0') 535 break; 536 s++; 537 l--; 538 } 539 540 ret = 1; 541 if (0) { 542 err: 543 OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB); 544 } 545 OPENSSL_free(b); 546 return (ret); 547 } 548
