1/* crypto/asn1/x_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#include <stdio.h>
59
60#include <openssl/asn1t.h>
61#include <openssl/evp.h>
62#include <openssl/mem.h>
63#include <openssl/obj.h>
64#include <openssl/thread.h>
65#include <openssl/x509.h>
66#include <openssl/x509v3.h>
67
68#include "../internal.h"
69
70
71static CRYPTO_EX_DATA_CLASS g_ex_data_class = CRYPTO_EX_DATA_CLASS_INIT;
72
73ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
74	ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
75	ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
76	ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
77	ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
78	ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
79	ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
80	ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
81	ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
82	ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
83	ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
84} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
85
86IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
87/* X509 top level structure needs a bit of customisation */
88
89extern void policy_cache_free(X509_POLICY_CACHE *cache);
90
91static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
92								void *exarg)
93{
94	X509 *ret = (X509 *)*pval;
95
96	switch(operation) {
97
98		case ASN1_OP_NEW_POST:
99		ret->valid=0;
100		ret->name = NULL;
101		ret->ex_flags = 0;
102		ret->ex_pathlen = -1;
103		ret->skid = NULL;
104		ret->akid = NULL;
105		ret->aux = NULL;
106		ret->crldp = NULL;
107		CRYPTO_new_ex_data(&g_ex_data_class, ret, &ret->ex_data);
108		break;
109
110		case ASN1_OP_D2I_POST:
111		if (ret->name != NULL) OPENSSL_free(ret->name);
112		ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0);
113		break;
114
115		case ASN1_OP_FREE_POST:
116		CRYPTO_free_ex_data(&g_ex_data_class, ret, &ret->ex_data);
117		X509_CERT_AUX_free(ret->aux);
118		ASN1_OCTET_STRING_free(ret->skid);
119		AUTHORITY_KEYID_free(ret->akid);
120		CRL_DIST_POINTS_free(ret->crldp);
121		policy_cache_free(ret->policy_cache);
122		GENERAL_NAMES_free(ret->altname);
123		NAME_CONSTRAINTS_free(ret->nc);
124
125		if (ret->name != NULL) OPENSSL_free(ret->name);
126		break;
127
128	}
129
130	return 1;
131
132}
133
134ASN1_SEQUENCE_ref(X509, x509_cb) = {
135	ASN1_SIMPLE(X509, cert_info, X509_CINF),
136	ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
137	ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
138} ASN1_SEQUENCE_END_ref(X509, X509)
139
140IMPLEMENT_ASN1_FUNCTIONS(X509)
141IMPLEMENT_ASN1_DUP_FUNCTION(X509)
142
143X509 *X509_up_ref(X509 *x)
144	{
145	CRYPTO_refcount_inc(&x->references);
146	return x;
147	}
148
149int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
150	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
151        {
152	int index;
153	if (!CRYPTO_get_ex_new_index(&g_ex_data_class, &index, argl, argp,
154			new_func, dup_func, free_func))
155		{
156		return -1;
157		}
158	return index;
159        }
160
161int X509_set_ex_data(X509 *r, int idx, void *arg)
162	{
163	return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
164	}
165
166void *X509_get_ex_data(X509 *r, int idx)
167	{
168	return(CRYPTO_get_ex_data(&r->ex_data,idx));
169	}
170
171/* X509_AUX ASN1 routines. X509_AUX is the name given to
172 * a certificate with extra info tagged on the end. Since these
173 * functions set how a certificate is trusted they should only
174 * be used when the certificate comes from a reliable source
175 * such as local storage.
176 *
177 */
178
179X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
180{
181	const unsigned char *q;
182	X509 *ret;
183	int freeret = 0;
184
185	/* Save start position */
186	q = *pp;
187
188	if (!a || *a == NULL)
189		freeret = 1;
190	ret = d2i_X509(a, pp, length);
191	/* If certificate unreadable then forget it */
192	if(!ret) return NULL;
193	/* update length */
194	length -= *pp - q;
195	if(!length) return ret;
196	if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err;
197	return ret;
198	err:
199	if (freeret)
200		{
201		X509_free(ret);
202		if (a)
203			*a = NULL;
204		}
205	return NULL;
206}
207
208int i2d_X509_AUX(X509 *a, unsigned char **pp)
209{
210	int length;
211	length = i2d_X509(a, pp);
212	if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
213	return length;
214}
215
216void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg,
217				const X509 *x)
218	{
219	if (psig)
220		*psig = x->signature;
221	if (palg)
222		*palg = x->sig_alg;
223	}
224
225int X509_get_signature_nid(const X509 *x)
226	{
227	return OBJ_obj2nid(x->sig_alg->algorithm);
228	}
229