1/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
2 * All rights reserved.
3 *
4 * This package is an SSL implementation written
5 * by Eric Young (eay@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@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@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@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
72int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag,
73 unsigned long cflag)
74{
75 BIO *b = BIO_new_fp(fp, BIO_NOCLOSE);
76 if (b == NULL) {
77 OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
78 return 0;
79 }
80 int ret = X509_print_ex(b, x, nmflag, cflag);
81 BIO_free(b);
82 return ret;
83}
84
85int X509_print_fp(FILE *fp, X509 *x)
86{
87 return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
88}
89#endif
90
91int X509_print(BIO *bp, X509 *x)
92{
93 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
94}
95
96int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags,
97 unsigned long cflag)
98{
99 long l;
100 int ret = 0, i;
101 char *m = NULL, mlch = ' ';
102 int nmindent = 0;
103 X509_CINF *ci;
104 ASN1_INTEGER *bs;
105 EVP_PKEY *pkey = NULL;
106 const char *neg;
107
108 if ((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
109 mlch = '\n';
110 nmindent = 12;
111 }
112
113 if (nmflags == X509_FLAG_COMPAT)
114 nmindent = 16;
115
116 ci = x->cert_info;
117 if (!(cflag & X509_FLAG_NO_HEADER)) {
118 if (BIO_write(bp, "Certificate:\n", 13) <= 0)
119 goto err;
120 if (BIO_write(bp, " Data:\n", 10) <= 0)
121 goto err;
122 }
123 if (!(cflag & X509_FLAG_NO_VERSION)) {
124 l = X509_get_version(x);
125 if (BIO_printf(bp, "%8sVersion: %lu (0x%lx)\n", "", l + 1, l) <= 0)
126 goto err;
127 }
128 if (!(cflag & X509_FLAG_NO_SERIAL)) {
129
130 if (BIO_write(bp, " Serial Number:", 22) <= 0)
131 goto err;
132
133 bs = X509_get_serialNumber(x);
134 if (bs->length < (int)sizeof(long)
135 || (bs->length == sizeof(long) && (bs->data[0] & 0x80) == 0)) {
136 l = ASN1_INTEGER_get(bs);
137 if (bs->type == V_ASN1_NEG_INTEGER) {
138 l = -l;
139 neg = "-";
140 } else
141 neg = "";
142 if (BIO_printf(bp, " %s%lu (%s0x%lx)\n", neg, l, neg, l) <= 0)
143 goto err;
144 } else {
145 neg = (bs->type == V_ASN1_NEG_INTEGER) ? " (Negative)" : "";
146 if (BIO_printf(bp, "\n%12s%s", "", neg) <= 0)
147 goto err;
148
149 for (i = 0; i < bs->length; i++) {
150 if (BIO_printf(bp, "%02x%c", bs->data[i],
151 ((i + 1 == bs->length) ? '\n' : ':')) <= 0)
152 goto err;
153 }
154 }
155
156 }
157
158 if (!(cflag & X509_FLAG_NO_SIGNAME)) {
159 if (X509_signature_print(bp, ci->signature, NULL) <= 0)
160 goto err;
161 }
162
163 if (!(cflag & X509_FLAG_NO_ISSUER)) {
164 if (BIO_printf(bp, " Issuer:%c", mlch) <= 0)
165 goto err;
166 if (X509_NAME_print_ex(bp, X509_get_issuer_name(x), nmindent, nmflags)
167 < 0)
168 goto err;
169 if (BIO_write(bp, "\n", 1) <= 0)
170 goto err;
171 }
172 if (!(cflag & X509_FLAG_NO_VALIDITY)) {
173 if (BIO_write(bp, " Validity\n", 17) <= 0)
174 goto err;
175 if (BIO_write(bp, " Not Before: ", 24) <= 0)
176 goto err;
177 if (!ASN1_TIME_print(bp, X509_get_notBefore(x)))
178 goto err;
179 if (BIO_write(bp, "\n Not After : ", 25) <= 0)
180 goto err;
181 if (!ASN1_TIME_print(bp, X509_get_notAfter(x)))
182 goto err;
183 if (BIO_write(bp, "\n", 1) <= 0)
184 goto err;
185 }
186 if (!(cflag & X509_FLAG_NO_SUBJECT)) {
187 if (BIO_printf(bp, " Subject:%c", mlch) <= 0)
188 goto err;
189 if (X509_NAME_print_ex
190 (bp, X509_get_subject_name(x), nmindent, nmflags) < 0)
191 goto err;
192 if (BIO_write(bp, "\n", 1) <= 0)
193 goto err;
194 }
195 if (!(cflag & X509_FLAG_NO_PUBKEY)) {
196 if (BIO_write(bp, " Subject Public Key Info:\n", 33) <= 0)
197 goto err;
198 if (BIO_printf(bp, "%12sPublic Key Algorithm: ", "") <= 0)
199 goto err;
200 if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
201 goto err;
202 if (BIO_puts(bp, "\n") <= 0)
203 goto err;
204
205 pkey = X509_get_pubkey(x);
206 if (pkey == NULL) {
207 BIO_printf(bp, "%12sUnable to load Public Key\n", "");
208 ERR_print_errors(bp);
209 } else {
210 EVP_PKEY_print_public(bp, pkey, 16, NULL);
211 EVP_PKEY_free(pkey);
212 }
213 }
214
215 if (!(cflag & X509_FLAG_NO_IDS)) {
216 if (ci->issuerUID) {
217 if (BIO_printf(bp, "%8sIssuer Unique ID: ", "") <= 0)
218 goto err;
219 if (!X509_signature_dump(bp, ci->issuerUID, 12))
220 goto err;
221 }
222 if (ci->subjectUID) {
223 if (BIO_printf(bp, "%8sSubject Unique ID: ", "") <= 0)
224 goto err;
225 if (!X509_signature_dump(bp, ci->subjectUID, 12))
226 goto err;
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 err:
244 if (m != NULL)
245 OPENSSL_free(m);
246 return (ret);
247}
248
249int X509_ocspid_print(BIO *bp, X509 *x)
250{
251 unsigned char *der = NULL;
252 unsigned char *dertmp;
253 int derlen;
254 int i;
255 unsigned char SHA1md[SHA_DIGEST_LENGTH];
256
257 /*
258 * display the hash of the subject as it would appear in OCSP requests
259 */
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 = (unsigned char *)OPENSSL_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 OPENSSL_free(der);
274 der = NULL;
275
276 /*
277 * display the hash of the public key as it would appear in OCSP requests
278 */
279 if (BIO_printf(bp, "\n Public key OCSP hash: ") <= 0)
280 goto err;
281
282 if (!EVP_Digest(x->cert_info->key->public_key->data,
283 x->cert_info->key->public_key->length,
284 SHA1md, NULL, EVP_sha1(), NULL))
285 goto err;
286 for (i = 0; i < SHA_DIGEST_LENGTH; i++) {
287 if (BIO_printf(bp, "%02X", SHA1md[i]) <= 0)
288 goto err;
289 }
290 BIO_printf(bp, "\n");
291
292 return (1);
293 err:
294 if (der != NULL)
295 OPENSSL_free(der);
296 return (0);
297}
298
299int X509_signature_print(BIO *bp, const X509_ALGOR *sigalg,
300 const ASN1_STRING *sig)
301{
302 if (BIO_puts(bp, " Signature Algorithm: ") <= 0)
303 return 0;
304 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
305 return 0;
306
307 /* RSA-PSS signatures have parameters to print. */
308 int sig_nid = OBJ_obj2nid(sigalg->algorithm);
309 if (sig_nid == NID_rsassaPss &&
310 !x509_print_rsa_pss_params(bp, sigalg, 9, 0)) {
311 return 0;
312 }
313
314 if (sig)
315 return X509_signature_dump(bp, sig, 9);
316 else if (BIO_puts(bp, "\n") <= 0)
317 return 0;
318 return 1;
319}
320
321int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
322{
323 int i, n;
324 char buf[80];
325 const char *p;
326
327 if (v == NULL)
328 return (0);
329 n = 0;
330 p = (const char *)v->data;
331 for (i = 0; i < v->length; i++) {
332 if ((p[i] > '~') || ((p[i] < ' ') &&
333 (p[i] != '\n') && (p[i] != '\r')))
334 buf[n] = '.';
335 else
336 buf[n] = p[i];
337 n++;
338 if (n >= 80) {
339 if (BIO_write(bp, buf, n) <= 0)
340 return (0);
341 n = 0;
342 }
343 }
344 if (n > 0)
345 if (BIO_write(bp, buf, n) <= 0)
346 return (0);
347 return (1);
348}
349
350int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
351{
352 if (tm->type == V_ASN1_UTCTIME)
353 return ASN1_UTCTIME_print(bp, tm);
354 if (tm->type == V_ASN1_GENERALIZEDTIME)
355 return ASN1_GENERALIZEDTIME_print(bp, tm);
356 BIO_write(bp, "Bad time value", 14);
357 return (0);
358}
359
360static const char *const mon[12] = {
361 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
362 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
363};
364
365int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
366{
367 char *v;
368 int gmt = 0;
369 int i;
370 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
371 char *f = NULL;
372 int f_len = 0;
373
374 i = tm->length;
375 v = (char *)tm->data;
376
377 if (i < 12)
378 goto err;
379 if (v[i - 1] == 'Z')
380 gmt = 1;
381 for (i = 0; i < 12; i++)
382 if ((v[i] > '9') || (v[i] < '0'))
383 goto err;
384 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + (v[2] - '0') * 10 + (v[3] -
385 '0');
386 M = (v[4] - '0') * 10 + (v[5] - '0');
387 if ((M > 12) || (M < 1))
388 goto err;
389 d = (v[6] - '0') * 10 + (v[7] - '0');
390 h = (v[8] - '0') * 10 + (v[9] - '0');
391 m = (v[10] - '0') * 10 + (v[11] - '0');
392 if (tm->length >= 14 &&
393 (v[12] >= '0') && (v[12] <= '9') &&
394 (v[13] >= '0') && (v[13] <= '9')) {
395 s = (v[12] - '0') * 10 + (v[13] - '0');
396 /* Check for fractions of seconds. */
397 if (tm->length >= 15 && v[14] == '.') {
398 int l = tm->length;
399 f = &v[14]; /* The decimal point. */
400 f_len = 1;
401 while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
402 ++f_len;
403 }
404 }
405
406 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
407 mon[M - 1], d, h, m, s, f_len, f, y,
408 (gmt) ? " GMT" : "") <= 0)
409 return (0);
410 else
411 return (1);
412 err:
413 BIO_write(bp, "Bad time value", 14);
414 return (0);
415}
416
417// consume_two_digits is a helper function for ASN1_UTCTIME_print. If |*v|,
418// assumed to be |*len| bytes long, has two leading digits, updates |*out| with
419// their value, updates |v| and |len|, and returns one. Otherwise, returns
420// zero.
421static int consume_two_digits(int* out, const char **v, int *len) {
422 if (*len < 2|| !isdigit((*v)[0]) || !isdigit((*v)[1])) {
423 return 0;
424 }
425 *out = ((*v)[0] - '0') * 10 + ((*v)[1] - '0');
426 *len -= 2;
427 *v += 2;
428 return 1;
429}
430
431// consume_zulu_timezone is a helper function for ASN1_UTCTIME_print. If |*v|,
432// assumed to be |*len| bytes long, starts with "Z" then it updates |*v| and
433// |*len| and returns one. Otherwise returns zero.
434static int consume_zulu_timezone(const char **v, int *len) {
435 if (*len == 0 || (*v)[0] != 'Z') {
436 return 0;
437 }
438
439 *len -= 1;
440 *v += 1;
441 return 1;
442}
443
444int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) {
445 const char *v = (const char *)tm->data;
446 int len = tm->length;
447 int Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0;
448
449 // YYMMDDhhmm are required to be present.
450 if (!consume_two_digits(&Y, &v, &len) ||
451 !consume_two_digits(&M, &v, &len) ||
452 !consume_two_digits(&D, &v, &len) ||
453 !consume_two_digits(&h, &v, &len) ||
454 !consume_two_digits(&m, &v, &len)) {
455 goto err;
456 }
457 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires seconds
458 // to be present, but historically this code has forgiven its absence.
459 consume_two_digits(&s, &v, &len);
460
461 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, specifies this
462 // interpretation of the year.
463 if (Y < 50) {
464 Y += 2000;
465 } else {
466 Y += 1900;
467 }
468 if (M > 12 || M == 0) {
469 goto err;
470 }
471 if (D > 31 || D == 0) {
472 goto err;
473 }
474 if (h > 23 || m > 59 || s > 60) {
475 goto err;
476 }
477
478 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires the "Z"
479 // to be present, but historically this code has forgiven its absence.
480 const int is_gmt = consume_zulu_timezone(&v, &len);
481
482 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, does not permit
483 // the specification of timezones using the +hhmm / -hhmm syntax, which is
484 // the only other thing that might legitimately be found at the end.
485 if (len) {
486 goto err;
487 }
488
489 return BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", mon[M - 1], D, h, m, s, Y,
490 is_gmt ? " GMT" : "") > 0;
491
492err:
493 BIO_write(bp, "Bad time value", 14);
494 return 0;
495}
496
497int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
498{
499 char *s, *c, *b;
500 int ret = 0, l, i;
501
502 l = 80 - 2 - obase;
503
504 b = X509_NAME_oneline(name, NULL, 0);
505 if (!b)
506 return 0;
507 if (!*b) {
508 OPENSSL_free(b);
509 return 1;
510 }
511 s = b + 1; /* skip the first slash */
512
513 c = s;
514 for (;;) {
515 if (((*s == '/') &&
516 ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
517 ((s[2] >= 'A')
518 && (s[2] <= 'Z')
519 && (s[3] == '='))
520 ))) || (*s == '\0')) {
521 i = s - c;
522 if (BIO_write(bp, c, i) != i)
523 goto err;
524 c = s + 1; /* skip following slash */
525 if (*s != '\0') {
526 if (BIO_write(bp, ", ", 2) != 2)
527 goto err;
528 }
529 l--;
530 }
531 if (*s == '\0')
532 break;
533 s++;
534 l--;
535 }
536
537 ret = 1;
538 if (0) {
539 err:
540 OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
541 }
542 OPENSSL_free(b);
543 return (ret);
544}
545