t_x509.c revision 1.29 
1/* $OpenBSD: t_x509.c,v 1.29 2018/04/25 19:58:53 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
82int
83X509_print_fp(FILE *fp, X509 *x)
84{
85	return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
86}
87
88int
89X509_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
104int
105X509_print(BIO *bp, X509 *x)
106{
107	return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
108}
109
110int
111X509_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
244err:
245	free(m);
246	return (ret);
247}
248
249int
250X509_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
293err:
294	free(der);
295	return (0);
296}
297
298int
299X509_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
323int
324X509_signature_print(BIO *bp, X509_ALGOR *sigalg, 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
349int
350ASN1_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
379int
380ASN1_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
390static const char *mon[12] = {
391	"Jan", "Feb", "Mar", "Apr", "May", "Jun",
392	"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
393};
394
395int
396ASN1_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
444err:
445	BIO_write(bp, "Bad time value", 14);
446	return (0);
447}
448
449int
450ASN1_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
487err:
488	BIO_write(bp, "Bad time value", 14);
489	return (0);
490}
491
492int
493X509_NAME_print(BIO *bp, 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) {
533err:
534		X509error(ERR_R_BUF_LIB);
535	}
536	free(b);
537	return (ret);
538}
539