x_x509.c revision 296465 
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
59#include <stdio.h>
60#include "cryptlib.h"
61#include <openssl/evp.h>
62#include <openssl/asn1t.h>
63#include <openssl/x509.h>
64#include <openssl/x509v3.h>
65
66ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
67        ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
68        ASN1_SIMPLE(X509_CINF, serialNumber, ASN1_INTEGER),
69        ASN1_SIMPLE(X509_CINF, signature, X509_ALGOR),
70        ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
71        ASN1_SIMPLE(X509_CINF, validity, X509_VAL),
72        ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
73        ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
74        ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
75        ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
76        ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
77} ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
78
79IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
80/* X509 top level structure needs a bit of customisation */
81
82extern void policy_cache_free(X509_POLICY_CACHE *cache);
83
84static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it)
85{
86    X509 *ret = (X509 *)*pval;
87
88    switch (operation) {
89
90    case ASN1_OP_NEW_POST:
91        ret->valid = 0;
92        ret->name = NULL;
93        ret->ex_flags = 0;
94        ret->ex_pathlen = -1;
95        ret->skid = NULL;
96        ret->akid = NULL;
97#ifndef OPENSSL_NO_RFC3779
98        ret->rfc3779_addr = NULL;
99        ret->rfc3779_asid = NULL;
100#endif
101        ret->aux = NULL;
102        CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
103        break;
104
105    case ASN1_OP_D2I_POST:
106        if (ret->name != NULL)
107            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        policy_cache_free(ret->policy_cache);
117#ifndef OPENSSL_NO_RFC3779
118        sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
119        ASIdentifiers_free(ret->rfc3779_asid);
120#endif
121
122        if (ret->name != NULL)
123            OPENSSL_free(ret->name);
124        break;
125
126    }
127
128    return 1;
129
130}
131
132ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
133        ASN1_SIMPLE(X509, cert_info, X509_CINF),
134        ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
135        ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
136} ASN1_SEQUENCE_END_ref(X509, X509)
137
138IMPLEMENT_ASN1_FUNCTIONS(X509)
139
140IMPLEMENT_ASN1_DUP_FUNCTION(X509)
141
142static ASN1_METHOD meth = {
143    (I2D_OF(void)) i2d_X509,
144    (D2I_OF(void)) d2i_X509,
145    (void *(*)(void))X509_new,
146    (void (*)(void *))X509_free
147};
148
149ASN1_METHOD *X509_asn1_meth(void)
150{
151    return (&meth);
152}
153
154int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
155                          CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
156{
157    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
158                                   new_func, dup_func, free_func);
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/*
172 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
173 * extra info tagged on the end. Since these functions set how a certificate
174 * is trusted they should only be used when the certificate comes from a
175 * reliable source such as local storage.
176 */
177
178X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
179{
180    const unsigned char *q;
181    X509 *ret;
182    int freeret = 0;
183
184    /* Save start position */
185    q = *pp;
186
187    if (!a || *a == NULL) {
188        freeret = 1;
189    }
190    ret = d2i_X509(a, pp, length);
191    /* If certificate unreadable then forget it */
192    if (!ret)
193        return NULL;
194    /* update length */
195    length -= *pp - q;
196    if (!length)
197        return ret;
198    if (!d2i_X509_CERT_AUX(&ret->aux, pp, length))
199        goto err;
200    return ret;
201 err:
202    if (freeret) {
203        X509_free(ret);
204        if (a)
205            *a = NULL;
206    }
207    return NULL;
208}
209
210int i2d_X509_AUX(X509 *a, unsigned char **pp)
211{
212    int length;
213    length = i2d_X509(a, pp);
214    if (a)
215        length += i2d_X509_CERT_AUX(a->aux, pp);
216    return length;
217}
218