1/* crypto/asn1/t_x509.c */
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#include "cryptlib.h"
61#include <openssl/buffer.h>
62#include <openssl/bn.h>
63#ifndef OPENSSL_NO_RSA
64#include <openssl/rsa.h>
65#endif
66#ifndef OPENSSL_NO_DSA
67#include <openssl/dsa.h>
68#endif
69#ifndef OPENSSL_NO_EC
70#include <openssl/ec.h>
71#endif
72#include <openssl/objects.h>
73#include <openssl/x509.h>
74#include <openssl/x509v3.h>
75#include "asn1_locl.h"
76
77#ifndef OPENSSL_NO_FP_API
78int X509_print_fp(FILE *fp, X509 *x)
79	{
80	return X509_print_ex_fp(fp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
81	}
82
83int X509_print_ex_fp(FILE *fp, X509 *x, unsigned long nmflag, unsigned long cflag)
84        {
85        BIO *b;
86        int ret;
87
88        if ((b=BIO_new(BIO_s_file())) == NULL)
89		{
90		X509err(X509_F_X509_PRINT_EX_FP,ERR_R_BUF_LIB);
91                return(0);
92		}
93        BIO_set_fp(b,fp,BIO_NOCLOSE);
94        ret=X509_print_ex(b, x, nmflag, cflag);
95        BIO_free(b);
96        return(ret);
97        }
98#endif
99
100int X509_print(BIO *bp, X509 *x)
101{
102	return X509_print_ex(bp, x, XN_FLAG_COMPAT, X509_FLAG_COMPAT);
103}
104
105int X509_print_ex(BIO *bp, X509 *x, unsigned long nmflags, unsigned long cflag)
106	{
107	long l;
108	int ret=0,i;
109	char *m=NULL,mlch = ' ';
110	int nmindent = 0;
111	X509_CINF *ci;
112	ASN1_INTEGER *bs;
113	EVP_PKEY *pkey=NULL;
114	const char *neg;
115
116	if((nmflags & XN_FLAG_SEP_MASK) == XN_FLAG_SEP_MULTILINE) {
117			mlch = '\n';
118			nmindent = 12;
119	}
120
121	if(nmflags == X509_FLAG_COMPAT)
122		nmindent = 16;
123
124	ci=x->cert_info;
125	if(!(cflag & X509_FLAG_NO_HEADER))
126		{
127		if (BIO_write(bp,"Certificate:\n",13) <= 0) goto err;
128		if (BIO_write(bp,"    Data:\n",10) <= 0) goto err;
129		}
130	if(!(cflag & X509_FLAG_NO_VERSION))
131		{
132		l=X509_get_version(x);
133		if (BIO_printf(bp,"%8sVersion: %lu (0x%lx)\n","",l+1,l) <= 0) goto err;
134		}
135	if(!(cflag & X509_FLAG_NO_SERIAL))
136		{
137
138		if (BIO_write(bp,"        Serial Number:",22) <= 0) goto err;
139
140		bs=X509_get_serialNumber(x);
141		if (bs->length <= (int)sizeof(long))
142			{
143			l=ASN1_INTEGER_get(bs);
144			if (bs->type == V_ASN1_NEG_INTEGER)
145				{
146				l= -l;
147				neg="-";
148				}
149			else
150				neg="";
151			if (BIO_printf(bp," %s%lu (%s0x%lx)\n",neg,l,neg,l) <= 0)
152				goto err;
153			}
154		else
155			{
156			neg=(bs->type == V_ASN1_NEG_INTEGER)?" (Negative)":"";
157			if (BIO_printf(bp,"\n%12s%s","",neg) <= 0) goto err;
158
159			for (i=0; i<bs->length; i++)
160				{
161				if (BIO_printf(bp,"%02x%c",bs->data[i],
162					((i+1 == bs->length)?'\n':':')) <= 0)
163					goto err;
164				}
165			}
166
167		}
168
169	if(!(cflag & X509_FLAG_NO_SIGNAME))
170		{
171		if(X509_signature_print(bp, x->sig_alg, NULL) <= 0)
172			goto err;
173#if 0
174		if (BIO_printf(bp,"%8sSignature Algorithm: ","") <= 0)
175			goto err;
176		if (i2a_ASN1_OBJECT(bp, ci->signature->algorithm) <= 0)
177			goto err;
178		if (BIO_puts(bp, "\n") <= 0)
179			goto err;
180#endif
181		}
182
183	if(!(cflag & X509_FLAG_NO_ISSUER))
184		{
185		if (BIO_printf(bp,"        Issuer:%c",mlch) <= 0) goto err;
186		if (X509_NAME_print_ex(bp,X509_get_issuer_name(x),nmindent, nmflags) < 0) goto err;
187		if (BIO_write(bp,"\n",1) <= 0) goto err;
188		}
189	if(!(cflag & X509_FLAG_NO_VALIDITY))
190		{
191		if (BIO_write(bp,"        Validity\n",17) <= 0) goto err;
192		if (BIO_write(bp,"            Not Before: ",24) <= 0) goto err;
193		if (!ASN1_TIME_print(bp,X509_get_notBefore(x))) goto err;
194		if (BIO_write(bp,"\n            Not After : ",25) <= 0) goto err;
195		if (!ASN1_TIME_print(bp,X509_get_notAfter(x))) goto err;
196		if (BIO_write(bp,"\n",1) <= 0) goto err;
197		}
198	if(!(cflag & X509_FLAG_NO_SUBJECT))
199		{
200		if (BIO_printf(bp,"        Subject:%c",mlch) <= 0) goto err;
201		if (X509_NAME_print_ex(bp,X509_get_subject_name(x),nmindent, nmflags) < 0) goto err;
202		if (BIO_write(bp,"\n",1) <= 0) goto err;
203		}
204	if(!(cflag & X509_FLAG_NO_PUBKEY))
205		{
206		if (BIO_write(bp,"        Subject Public Key Info:\n",33) <= 0)
207			goto err;
208		if (BIO_printf(bp,"%12sPublic Key Algorithm: ","") <= 0)
209			goto err;
210		if (i2a_ASN1_OBJECT(bp, ci->key->algor->algorithm) <= 0)
211			goto err;
212		if (BIO_puts(bp, "\n") <= 0)
213			goto err;
214
215		pkey=X509_get_pubkey(x);
216		if (pkey == NULL)
217			{
218			BIO_printf(bp,"%12sUnable to load Public Key\n","");
219			ERR_print_errors(bp);
220			}
221		else
222			{
223			EVP_PKEY_print_public(bp, pkey, 16, NULL);
224			EVP_PKEY_free(pkey);
225			}
226		}
227
228	if (!(cflag & X509_FLAG_NO_EXTENSIONS))
229		X509V3_extensions_print(bp, "X509v3 extensions",
230					ci->extensions, cflag, 8);
231
232	if(!(cflag & X509_FLAG_NO_SIGDUMP))
233		{
234		if(X509_signature_print(bp, x->sig_alg, x->signature) <= 0) goto err;
235		}
236	if(!(cflag & X509_FLAG_NO_AUX))
237		{
238		if (!X509_CERT_AUX_print(bp, x->aux, 0)) goto err;
239		}
240	ret=1;
241err:
242	if (m != NULL) OPENSSL_free(m);
243	return(ret);
244	}
245
246int X509_ocspid_print (BIO *bp, X509 *x)
247	{
248	unsigned char *der=NULL ;
249	unsigned char *dertmp;
250	int derlen;
251	int i;
252	unsigned char SHA1md[SHA_DIGEST_LENGTH];
253
254	/* display the hash of the subject as it would appear
255	   in OCSP requests */
256	if (BIO_printf(bp,"        Subject OCSP hash: ") <= 0)
257		goto err;
258	derlen = i2d_X509_NAME(x->cert_info->subject, NULL);
259	if ((der = dertmp = (unsigned char *)OPENSSL_malloc (derlen)) == NULL)
260		goto err;
261	i2d_X509_NAME(x->cert_info->subject, &dertmp);
262
263	if (!EVP_Digest(der, derlen, SHA1md, NULL, EVP_sha1(), NULL))
264		goto err;
265	for (i=0; i < SHA_DIGEST_LENGTH; i++)
266		{
267		if (BIO_printf(bp,"%02X",SHA1md[i]) <= 0) goto err;
268		}
269	OPENSSL_free (der);
270	der=NULL;
271
272	/* display the hash of the public key as it would appear
273	   in OCSP requests */
274	if (BIO_printf(bp,"\n        Public key OCSP hash: ") <= 0)
275		goto err;
276
277	if (!EVP_Digest(x->cert_info->key->public_key->data,
278			x->cert_info->key->public_key->length,
279			SHA1md, NULL, EVP_sha1(), NULL))
280		goto err;
281	for (i=0; i < SHA_DIGEST_LENGTH; i++)
282		{
283		if (BIO_printf(bp,"%02X",SHA1md[i]) <= 0)
284			goto err;
285		}
286	BIO_printf(bp,"\n");
287
288	return (1);
289err:
290	if (der != NULL) OPENSSL_free(der);
291	return(0);
292	}
293
294int X509_signature_dump(BIO *bp, const ASN1_STRING *sig, int indent)
295{
296	const unsigned char *s;
297	int i, n;
298
299	n=sig->length;
300	s=sig->data;
301	for (i=0; i<n; i++)
302		{
303		if ((i%18) == 0)
304			{
305			if (BIO_write(bp,"\n",1) <= 0) return 0;
306			if (BIO_indent(bp, indent, indent) <= 0) return 0;
307			}
308			if (BIO_printf(bp,"%02x%s",s[i],
309				((i+1) == n)?"":":") <= 0) return 0;
310		}
311	if (BIO_write(bp,"\n",1) != 1) return 0;
312
313	return 1;
314}
315
316int X509_signature_print(BIO *bp, X509_ALGOR *sigalg, ASN1_STRING *sig)
317{
318	int sig_nid;
319	if (BIO_puts(bp,"    Signature Algorithm: ") <= 0) return 0;
320	if (i2a_ASN1_OBJECT(bp, sigalg->algorithm) <= 0) return 0;
321
322	sig_nid = OBJ_obj2nid(sigalg->algorithm);
323	if (sig_nid != NID_undef)
324		{
325		int pkey_nid, dig_nid;
326		const EVP_PKEY_ASN1_METHOD *ameth;
327		if (OBJ_find_sigid_algs(sig_nid, &dig_nid, &pkey_nid))
328			{
329			ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
330			if (ameth && ameth->sig_print)
331				return ameth->sig_print(bp, sigalg, sig, 9, 0);
332			}
333		}
334	if (sig)
335		return X509_signature_dump(bp, sig, 9);
336	else if (BIO_puts(bp, "\n") <= 0)
337		return 0;
338	return 1;
339}
340
341int ASN1_STRING_print(BIO *bp, const ASN1_STRING *v)
342	{
343	int i,n;
344	char buf[80];
345	const char *p;
346
347	if (v == NULL) return(0);
348	n=0;
349	p=(const char *)v->data;
350	for (i=0; i<v->length; i++)
351		{
352		if ((p[i] > '~') || ((p[i] < ' ') &&
353			(p[i] != '\n') && (p[i] != '\r')))
354			buf[n]='.';
355		else
356			buf[n]=p[i];
357		n++;
358		if (n >= 80)
359			{
360			if (BIO_write(bp,buf,n) <= 0)
361				return(0);
362			n=0;
363			}
364		}
365	if (n > 0)
366		if (BIO_write(bp,buf,n) <= 0)
367			return(0);
368	return(1);
369	}
370
371int ASN1_TIME_print(BIO *bp, const ASN1_TIME *tm)
372{
373	if(tm->type == V_ASN1_UTCTIME) return ASN1_UTCTIME_print(bp, tm);
374	if(tm->type == V_ASN1_GENERALIZEDTIME)
375				return ASN1_GENERALIZEDTIME_print(bp, tm);
376	BIO_write(bp,"Bad time value",14);
377	return(0);
378}
379
380static const char *mon[12]=
381    {
382    "Jan","Feb","Mar","Apr","May","Jun",
383    "Jul","Aug","Sep","Oct","Nov","Dec"
384    };
385
386int ASN1_GENERALIZEDTIME_print(BIO *bp, const ASN1_GENERALIZEDTIME *tm)
387	{
388	char *v;
389	int gmt=0;
390	int i;
391	int y=0,M=0,d=0,h=0,m=0,s=0;
392	char *f = NULL;
393	int f_len = 0;
394
395	i=tm->length;
396	v=(char *)tm->data;
397
398	if (i < 12) goto err;
399	if (v[i-1] == 'Z') gmt=1;
400	for (i=0; i<12; i++)
401		if ((v[i] > '9') || (v[i] < '0')) goto err;
402	y= (v[0]-'0')*1000+(v[1]-'0')*100 + (v[2]-'0')*10+(v[3]-'0');
403	M= (v[4]-'0')*10+(v[5]-'0');
404	if ((M > 12) || (M < 1)) goto err;
405	d= (v[6]-'0')*10+(v[7]-'0');
406	h= (v[8]-'0')*10+(v[9]-'0');
407	m=  (v[10]-'0')*10+(v[11]-'0');
408	if (tm->length >= 14 &&
409	    (v[12] >= '0') && (v[12] <= '9') &&
410	    (v[13] >= '0') && (v[13] <= '9'))
411		{
412		s=  (v[12]-'0')*10+(v[13]-'0');
413		/* Check for fractions of seconds. */
414		if (tm->length >= 15 && v[14] == '.')
415			{
416			int l = tm->length;
417			f = &v[14];	/* The decimal point. */
418			f_len = 1;
419			while (14 + f_len < l && f[f_len] >= '0' && f[f_len] <= '9')
420				++f_len;
421			}
422		}
423
424	if (BIO_printf(bp,"%s %2d %02d:%02d:%02d%.*s %d%s",
425		mon[M-1],d,h,m,s,f_len,f,y,(gmt)?" GMT":"") <= 0)
426		return(0);
427	else
428		return(1);
429err:
430	BIO_write(bp,"Bad time value",14);
431	return(0);
432	}
433
434int ASN1_UTCTIME_print(BIO *bp, const ASN1_UTCTIME *tm)
435	{
436	const char *v;
437	int gmt=0;
438	int i;
439	int y=0,M=0,d=0,h=0,m=0,s=0;
440
441	i=tm->length;
442	v=(const char *)tm->data;
443
444	if (i < 10) goto err;
445	if (v[i-1] == 'Z') gmt=1;
446	for (i=0; i<10; i++)
447		if ((v[i] > '9') || (v[i] < '0')) goto err;
448	y= (v[0]-'0')*10+(v[1]-'0');
449	if (y < 50) y+=100;
450	M= (v[2]-'0')*10+(v[3]-'0');
451	if ((M > 12) || (M < 1)) goto err;
452	d= (v[4]-'0')*10+(v[5]-'0');
453	h= (v[6]-'0')*10+(v[7]-'0');
454	m=  (v[8]-'0')*10+(v[9]-'0');
455	if (tm->length >=12 &&
456	    (v[10] >= '0') && (v[10] <= '9') &&
457	    (v[11] >= '0') && (v[11] <= '9'))
458		s=  (v[10]-'0')*10+(v[11]-'0');
459
460	if (BIO_printf(bp,"%s %2d %02d:%02d:%02d %d%s",
461		mon[M-1],d,h,m,s,y+1900,(gmt)?" GMT":"") <= 0)
462		return(0);
463	else
464		return(1);
465err:
466	BIO_write(bp,"Bad time value",14);
467	return(0);
468	}
469
470int X509_NAME_print(BIO *bp, X509_NAME *name, int obase)
471	{
472	char *s,*c,*b;
473	int ret=0,l,i;
474
475	l=80-2-obase;
476
477	b=X509_NAME_oneline(name,NULL,0);
478	if (!b)
479		return 0;
480	if (!*b)
481		{
482		OPENSSL_free(b);
483		return 1;
484		}
485	s=b+1; /* skip the first slash */
486
487	c=s;
488	for (;;)
489		{
490#ifndef CHARSET_EBCDIC
491		if (	((*s == '/') &&
492				((s[1] >= 'A') && (s[1] <= 'Z') && (
493					(s[2] == '=') ||
494					((s[2] >= 'A') && (s[2] <= 'Z') &&
495					(s[3] == '='))
496				 ))) ||
497			(*s == '\0'))
498#else
499		if (	((*s == '/') &&
500				(isupper(s[1]) && (
501					(s[2] == '=') ||
502					(isupper(s[2]) &&
503					(s[3] == '='))
504				 ))) ||
505			(*s == '\0'))
506#endif
507			{
508			i=s-c;
509			if (BIO_write(bp,c,i) != i) goto err;
510			c=s+1;	/* skip following slash */
511			if (*s != '\0')
512				{
513				if (BIO_write(bp,", ",2) != 2) goto err;
514				}
515			l--;
516			}
517		if (*s == '\0') break;
518		s++;
519		l--;
520		}
521
522	ret=1;
523	if (0)
524		{
525err:
526		X509err(X509_F_X509_NAME_PRINT,ERR_R_BUF_LIB);
527		}
528	OPENSSL_free(b);
529	return(ret);
530	}
531