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
69ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
70	ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
71	ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
72	ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
73	ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
74	ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
75	ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
76	ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
77	ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
78	ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
79	ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
80} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
81
82IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
83/* X509 top level structure needs a bit of customisation */
84
85extern void policy_cache_free(X509_POLICY_CACHE *cache);
86
87static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
88								void *exarg)
89{
90	X509 *ret = (X509 *)*pval;
91
92	switch(operation) {
93
94		case ASN1_OP_NEW_POST:
95		ret->valid=0;
96		ret->name = NULL;
97		ret->ex_flags = 0;
98		ret->ex_pathlen = -1;
99		ret->skid = NULL;
100		ret->akid = NULL;
101		ret->aux = NULL;
102		ret->crldp = NULL;
103		CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
104		break;
105
106		case ASN1_OP_D2I_POST:
107		if (ret->name != NULL) OPENSSL_free(ret->name);
108		ret->name=X509_NAME_oneline(ret->cert_info->subject,NULL,0);
109		break;
110
111		case ASN1_OP_FREE_POST:
112		CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
113		X509_CERT_AUX_free(ret->aux);
114		ASN1_OCTET_STRING_free(ret->skid);
115		AUTHORITY_KEYID_free(ret->akid);
116		CRL_DIST_POINTS_free(ret->crldp);
117		policy_cache_free(ret->policy_cache);
118		GENERAL_NAMES_free(ret->altname);
119		NAME_CONSTRAINTS_free(ret->nc);
120
121		if (ret->name != NULL) OPENSSL_free(ret->name);
122		break;
123
124	}
125
126	return 1;
127
128}
129
130ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
131	ASN1_SIMPLE(X509, cert_info, X509_CINF),
132	ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
133	ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
134} ASN1_SEQUENCE_END_ref(X509, X509)
135
136IMPLEMENT_ASN1_FUNCTIONS(X509)
137IMPLEMENT_ASN1_DUP_FUNCTION(X509)
138
139X509 *X509_up_ref(X509 *x)
140	{
141	CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509);
142	return x;
143	}
144
145int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
146	     CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
147        {
148	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
149				new_func, dup_func, free_func);
150        }
151
152int X509_set_ex_data(X509 *r, int idx, void *arg)
153	{
154	return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
155	}
156
157void *X509_get_ex_data(X509 *r, int idx)
158	{
159	return(CRYPTO_get_ex_data(&r->ex_data,idx));
160	}
161
162/* X509_AUX ASN1 routines. X509_AUX is the name given to
163 * a certificate with extra info tagged on the end. Since these
164 * functions set how a certificate is trusted they should only
165 * be used when the certificate comes from a reliable source
166 * such as local storage.
167 *
168 */
169
170X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
171{
172	const unsigned char *q;
173	X509 *ret;
174	/* Save start position */
175	q = *pp;
176	ret = d2i_X509(a, pp, length);
177	/* If certificate unreadable then forget it */
178	if(!ret) return NULL;
179	/* update length */
180	length -= *pp - q;
181	if(!length) return ret;
182	if(!d2i_X509_CERT_AUX(&ret->aux, pp, length)) goto err;
183	return ret;
184	err:
185	X509_free(ret);
186	return NULL;
187}
188
189int i2d_X509_AUX(X509 *a, unsigned char **pp)
190{
191	int length;
192	length = i2d_X509(a, pp);
193	if(a) length += i2d_X509_CERT_AUX(a->aux, pp);
194	return length;
195}
196
197void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg,
198				const X509 *x)
199	{
200	if (psig)
201		*psig = x->signature;
202	if (palg)
203		*palg = x->sig_alg;
204	}
205
206int X509_get_signature_nid(const X509 *x)
207	{
208	return OBJ_obj2nid(x->sig_alg->algorithm);
209	}
210