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
X509_print_ex_fp(FILE * fp,X509 * x,unsigned long nmflag,unsigned long cflag)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
X509_print_fp(FILE * fp,X509 * x)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
X509_print(BIO * bp,X509 * x)94 int X509_print(BIO *bp, X509 *x)
95 {
96 return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
97 }
98
X509_print_ex(BIO * bp,X509 * x,unsigned long nmflags,unsigned long cflag)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
X509_ocspid_print(BIO * bp,X509 * x)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
X509_signature_print(BIO * bp,X509_ALGOR * sigalg,ASN1_STRING * sig)302 int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
303 {
304 if (BIO_puts(bp, " Signature Algorithm: ") <= 0)
305 return 0;
306 if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0)
307 return 0;
308
309 /* RSA-PSS signatures have parameters to print. */
310 int sig_nid = OBJ_obj2nid(sigalg->algorithm);
311 if (sig_nid == NID_rsassaPss &&
312 !x509_print_rsa_pss_params(bp, sigalg, 9, 0)) {
313 return 0;
314 }
315
316 if (sig)
317 return X509_signature_dump(bp, sig, 9);
318 else if (BIO_puts(bp, "\n") <= 0)
319 return 0;
320 return 1;
321 }
322
ASN1_STRING_print(BIO * bp,const ASN1_STRING * v)323 int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
324 {
325 int i, n;
326 char buf[80];
327 const char *p;
328
329 if (v == NULL)
330 return (0);
331 n = 0;
332 p = (const char *)v->data;
333 for (i = 0; i < v->length; i++) {
334 if ((p[i] > '~') || ((p[i] < ' ') &&
335 (p[i] != '\n') && (p[i] != '\r')))
336 buf[n] = '.';
337 else
338 buf[n] = p[i];
339 n++;
340 if (n >= 80) {
341 if (BIO_write(bp, buf, n) <= 0)
342 return (0);
343 n = 0;
344 }
345 }
346 if (n > 0)
347 if (BIO_write(bp, buf, n) <= 0)
348 return (0);
349 return (1);
350 }
351
ASN1_TIME_print(BIO * bp,const ASN1_TIME * tm)352 int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
353 {
354 if (tm->type == V_ASN1_UTCTIME)
355 return ASN1_UTCTIME_print(bp, tm);
356 if (tm->type == V_ASN1_GENERALIZEDTIME)
357 return ASN1_GENERALIZEDTIME_print(bp, tm);
358 BIO_write(bp, "Bad time value", 14);
359 return (0);
360 }
361
362 static const char *const mon[12] = {
363 "Jan", "Feb", "Mar", "Apr", "May", "Jun",
364 "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
365 };
366
ASN1_GENERALIZEDTIME_print(BIO * bp,const ASN1_GENERALIZEDTIME * tm)367 int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
368 {
369 char *v;
370 int gmt = 0;
371 int i;
372 int y = 0, M = 0, d = 0, h = 0, m = 0, s = 0;
373 char *f = NULL;
374 int f_len = 0;
375
376 i = tm->length;
377 v = (char *)tm->data;
378
379 if (i < 12)
380 goto err;
381 if (v[i - 1] == 'Z')
382 gmt = 1;
383 for (i = 0; i < 12; i++)
384 if ((v[i] > '9') || (v[i] < '0'))
385 goto err;
386 y = (v[0] - '0') * 1000 + (v[1] - '0') * 100 + (v[2] - '0') * 10 + (v[3] -
387 '0');
388 M = (v[4] - '0') * 10 + (v[5] - '0');
389 if ((M > 12) || (M < 1))
390 goto err;
391 d = (v[6] - '0') * 10 + (v[7] - '0');
392 h = (v[8] - '0') * 10 + (v[9] - '0');
393 m = (v[10] - '0') * 10 + (v[11] - '0');
394 if (tm->length >= 14 &&
395 (v[12] >= '0') && (v[12] <= '9') &&
396 (v[13] >= '0') && (v[13] <= '9')) {
397 s = (v[12] - '0') * 10 + (v[13] - '0');
398 /* Check for fractions of seconds. */
399 if (tm->length >= 15 && v[14] == '.') {
400 int l = tm->length;
401 f = &v[14]; /* The decimal point. */
402 f_len = 1;
403 while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
404 ++f_len;
405 }
406 }
407
408 if (BIO_printf(bp, "%s %2d %02d:%02d:%02d%.*s %d%s",
409 mon[M - 1], d, h, m, s, f_len, f, y,
410 (gmt) ? " GMT" : "") <= 0)
411 return (0);
412 else
413 return (1);
414 err:
415 BIO_write(bp, "Bad time value", 14);
416 return (0);
417 }
418
419 // consume_two_digits is a helper function for ASN1_UTCTIME_print. If |*v|,
420 // assumed to be |*len| bytes long, has two leading digits, updates |*out| with
421 // their value, updates |v| and |len|, and returns one. Otherwise, returns
422 // zero.
consume_two_digits(int * out,const char ** v,int * len)423 static int consume_two_digits(int* out, const char **v, int *len) {
424 if (*len < 2|| !isdigit((*v)[0]) || !isdigit((*v)[1])) {
425 return 0;
426 }
427 *out = ((*v)[0] - '0') * 10 + ((*v)[1] - '0');
428 *len -= 2;
429 *v += 2;
430 return 1;
431 }
432
433 // consume_zulu_timezone is a helper function for ASN1_UTCTIME_print. If |*v|,
434 // assumed to be |*len| bytes long, starts with "Z" then it updates |*v| and
435 // |*len| and returns one. Otherwise returns zero.
consume_zulu_timezone(const char ** v,int * len)436 static int consume_zulu_timezone(const char **v, int *len) {
437 if (*len == 0 || (*v)[0] != 'Z') {
438 return 0;
439 }
440
441 *len -= 1;
442 *v += 1;
443 return 1;
444 }
445
ASN1_UTCTIME_print(BIO * bp,const ASN1_UTCTIME * tm)446 int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm) {
447 const char *v = (const char *)tm->data;
448 int len = tm->length;
449 int Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0;
450
451 // YYMMDDhhmm are required to be present.
452 if (!consume_two_digits(&Y, &v, &len) ||
453 !consume_two_digits(&M, &v, &len) ||
454 !consume_two_digits(&D, &v, &len) ||
455 !consume_two_digits(&h, &v, &len) ||
456 !consume_two_digits(&m, &v, &len)) {
457 goto err;
458 }
459 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires seconds
460 // to be present, but historically this code has forgiven its absence.
461 consume_two_digits(&s, &v, &len);
462
463 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, specifies this
464 // interpretation of the year.
465 if (Y < 50) {
466 Y += 2000;
467 } else {
468 Y += 1900;
469 }
470 if (M > 12 || M == 0) {
471 goto err;
472 }
473 if (D > 31 || D == 0) {
474 goto err;
475 }
476 if (h > 23 || m > 59 || s > 60) {
477 goto err;
478 }
479
480 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, requires the "Z"
481 // to be present, but historically this code has forgiven its absence.
482 const int is_gmt = consume_zulu_timezone(&v, &len);
483
484 // https://tools.ietf.org/html/rfc5280, section 4.1.2.5.1, does not permit
485 // the specification of timezones using the +hhmm / -hhmm syntax, which is
486 // the only other thing that might legitimately be found at the end.
487 if (len) {
488 goto err;
489 }
490
491 return BIO_printf(bp, "%s %2d %02d:%02d:%02d %d%s", mon[M - 1], D, h, m, s, Y,
492 is_gmt ? " GMT" : "") > 0;
493
494 err:
495 BIO_write(bp, "Bad time value", 14);
496 return 0;
497 }
498
X509_NAME_print(BIO * bp,X509_NAME * name,int obase)499 int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
500 {
501 char *s, *c, *b;
502 int ret = 0, l, i;
503
504 l = 80 - 2 - obase;
505
506 b = X509_NAME_oneline(name, NULL, 0);
507 if (!b)
508 return 0;
509 if (!*b) {
510 OPENSSL_free(b);
511 return 1;
512 }
513 s = b + 1; /* skip the first slash */
514
515 c = s;
516 for (;;) {
517 if (((*s == '/') &&
518 ((s[1] >= 'A') && (s[1] <= 'Z') && ((s[2] == '=') ||
519 ((s[2] >= 'A')
520 && (s[2] <= 'Z')
521 && (s[3] == '='))
522 ))) || (*s == '\0')) {
523 i = s - c;
524 if (BIO_write(bp, c, i) != i)
525 goto err;
526 c = s + 1; /* skip following slash */
527 if (*s != '\0') {
528 if (BIO_write(bp, ", ", 2) != 2)
529 goto err;
530 }
531 l--;
532 }
533 if (*s == '\0')
534 break;
535 s++;
536 l--;
537 }
538
539 ret = 1;
540 if (0) {
541 err:
542 OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
543 }
544 OPENSSL_free(b);
545 return (ret);
546 }
547