x_x509.c revision 296341 
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                   void *exarg)
86{
87    X509 *ret = (X509 *)*pval;
88
89    switch (operation) {
90
91    case ASN1_OP_NEW_POST:
92        ret->valid = 0;
93        ret->name = NULL;
94        ret->ex_flags = 0;
95        ret->ex_pathlen = -1;
96        ret->skid = NULL;
97        ret->akid = NULL;
98#ifndef OPENSSL_NO_RFC3779
99        ret->rfc3779_addr = NULL;
100        ret->rfc3779_asid = NULL;
101#endif
102        ret->aux = NULL;
103        ret->crldp = NULL;
104        CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
105        break;
106
107    case ASN1_OP_D2I_POST:
108        if (ret->name != NULL)
109            OPENSSL_free(ret->name);
110        ret->name = X509_NAME_oneline(ret->cert_info->subject, NULL, 0);
111        break;
112
113    case ASN1_OP_FREE_POST:
114        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
115        X509_CERT_AUX_free(ret->aux);
116        ASN1_OCTET_STRING_free(ret->skid);
117        AUTHORITY_KEYID_free(ret->akid);
118        CRL_DIST_POINTS_free(ret->crldp);
119        policy_cache_free(ret->policy_cache);
120        GENERAL_NAMES_free(ret->altname);
121        NAME_CONSTRAINTS_free(ret->nc);
122#ifndef OPENSSL_NO_RFC3779
123        sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
124        ASIdentifiers_free(ret->rfc3779_asid);
125#endif
126
127        if (ret->name != NULL)
128            OPENSSL_free(ret->name);
129        break;
130
131    }
132
133    return 1;
134
135}
136
137ASN1_SEQUENCE_ref(X509, x509_cb, CRYPTO_LOCK_X509) = {
138        ASN1_SIMPLE(X509, cert_info, X509_CINF),
139        ASN1_SIMPLE(X509, sig_alg, X509_ALGOR),
140        ASN1_SIMPLE(X509, signature, ASN1_BIT_STRING)
141} ASN1_SEQUENCE_END_ref(X509, X509)
142
143IMPLEMENT_ASN1_FUNCTIONS(X509)
144
145IMPLEMENT_ASN1_DUP_FUNCTION(X509)
146
147int X509_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
148                          CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
149{
150    return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_X509, argl, argp,
151                                   new_func, dup_func, free_func);
152}
153
154int X509_set_ex_data(X509 *r, int idx, void *arg)
155{
156    return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
157}
158
159void *X509_get_ex_data(X509 *r, int idx)
160{
161    return (CRYPTO_get_ex_data(&r->ex_data, idx));
162}
163
164/*
165 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
166 * extra info tagged on the end. Since these functions set how a certificate
167 * is trusted they should only be used when the certificate comes from a
168 * reliable source such as local storage.
169 */
170
171X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
172{
173    const unsigned char *q;
174    X509 *ret;
175    int freeret = 0;
176
177    /* Save start position */
178    q = *pp;
179
180    if (!a || *a == NULL) {
181        freeret = 1;
182    }
183    ret = d2i_X509(a, pp, length);
184    /* If certificate unreadable then forget it */
185    if (!ret)
186        return NULL;
187    /* update length */
188    length -= *pp - q;
189    if (!length)
190        return ret;
191    if (!d2i_X509_CERT_AUX(&ret->aux, pp, length))
192        goto err;
193    return ret;
194 err:
195    if (freeret) {
196        X509_free(ret);
197        if (a)
198            *a = NULL;
199    }
200    return NULL;
201}
202
203int i2d_X509_AUX(X509 *a, unsigned char **pp)
204{
205    int length;
206    length = i2d_X509(a, pp);
207    if (a)
208        length += i2d_X509_CERT_AUX(a->aux, pp);
209    return length;
210}
211