1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
4 * This package is an SSL implementation written
5 * by Eric Young (eay@cryptsoft.com).
6 * The implementation was written so as to conform with Netscapes SSL.
8 * This library is free for commercial and non-commercial use as long as
9 * the following conditions are aheared to. The following conditions
10 * apply to all code found in this distribution, be it the RC4, RSA,
11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
12 * included with this distribution is covered by the same copyright terms
13 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 * Copyright remains Eric Young's, and as such any Copyright notices in
16 * the code are not to be removed.
17 * If this package is used in a product, Eric Young should be given attribution
18 * as the author of the parts of the library used.
19 * This can be in the form of a textual message at program startup or
20 * in documentation (online or textual) provided with the package.
22 * Redistribution and use in source and binary forms, with or without
23 * modification, are permitted provided that the following conditions
25 * 1. Redistributions of source code must retain the copyright
26 * notice, this list of conditions and the following disclaimer.
27 * 2. Redistributions in binary form must reproduce the above copyright
28 * notice, this list of conditions and the following disclaimer in the
29 * documentation and/or other materials provided with the distribution.
30 * 3. All advertising materials mentioning features or use of this software
31 * must display the following acknowledgement:
32 * "This product includes cryptographic software written by
33 * Eric Young (eay@cryptsoft.com)"
34 * The word 'cryptographic' can be left out if the rouines from the library
35 * being used are not cryptographic related :-).
36 * 4. If you include any Windows specific code (or a derivative thereof) from
37 * the apps directory (application code) you must include an acknowledgement:
38 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
52 * The licence and distribution terms for any publically available version or
53 * derivative of this code cannot be changed. i.e. this code cannot simply be
54 * copied and put under another distribution licence
55 * [including the GNU Public Licence.]
59 #include "internal/cryptlib.h"
60 #include <openssl/evp.h>
61 #include <openssl/asn1t.h>
62 #include <openssl/x509.h>
63 #include <openssl/x509v3.h>
64 #include "internal/x509_int.h"
66 ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
67 ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
68 ASN1_EMBED(X509_CINF, serialNumber, ASN1_INTEGER),
69 ASN1_EMBED(X509_CINF, signature, X509_ALGOR),
70 ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
71 ASN1_EMBED(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)
79 IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
80 /* X509 top level structure needs a bit of customisation */
82 extern void policy_cache_free(X509_POLICY_CACHE *cache);
84 static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
87 X509 *ret = (X509 *)*pval;
91 case ASN1_OP_NEW_POST:
96 #ifndef OPENSSL_NO_RFC3779
97 ret->rfc3779_addr = NULL;
98 ret->rfc3779_asid = NULL;
102 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data))
106 case ASN1_OP_FREE_POST:
107 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
108 X509_CERT_AUX_free(ret->aux);
109 ASN1_OCTET_STRING_free(ret->skid);
110 AUTHORITY_KEYID_free(ret->akid);
111 CRL_DIST_POINTS_free(ret->crldp);
112 policy_cache_free(ret->policy_cache);
113 GENERAL_NAMES_free(ret->altname);
114 NAME_CONSTRAINTS_free(ret->nc);
115 #ifndef OPENSSL_NO_RFC3779
116 sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
117 ASIdentifiers_free(ret->rfc3779_asid);
127 ASN1_SEQUENCE_ref(X509, x509_cb) = {
128 ASN1_EMBED(X509, cert_info, X509_CINF),
129 ASN1_EMBED(X509, sig_alg, X509_ALGOR),
130 ASN1_EMBED(X509, signature, ASN1_BIT_STRING)
131 } ASN1_SEQUENCE_END_ref(X509, X509)
133 IMPLEMENT_ASN1_FUNCTIONS(X509)
135 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
137 int X509_set_ex_data(X509 *r, int idx, void *arg)
139 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
142 void *X509_get_ex_data(X509 *r, int idx)
144 return (CRYPTO_get_ex_data(&r->ex_data, idx));
148 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
149 * extra info tagged on the end. Since these functions set how a certificate
150 * is trusted they should only be used when the certificate comes from a
151 * reliable source such as local storage.
154 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
156 const unsigned char *q;
160 /* Save start position */
163 if (a == NULL || *a == NULL)
165 ret = d2i_X509(a, &q, length);
166 /* If certificate unreadable then forget it */
171 if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
185 * Serialize trusted certificate to *pp or just return the required buffer
186 * length if pp == NULL. We ultimately want to avoid modifying *pp in the
187 * error path, but that depends on similar hygiene in lower-level functions.
188 * Here we avoid compounding the problem.
190 static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
193 unsigned char *start = pp != NULL ? *pp : NULL;
195 OPENSSL_assert(pp == NULL || *pp != NULL);
198 * This might perturb *pp on error, but fixing that belongs in i2d_X509()
199 * not here. It should be that if a == NULL length is zero, but we check
202 length = i2d_X509(a, pp);
203 if (length <= 0 || a == NULL)
206 tmplen = i2d_X509_CERT_AUX(a->aux, pp);
218 * Serialize trusted certificate to *pp, or just return the required buffer
219 * length if pp == NULL.
221 * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
222 * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
223 * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
226 int i2d_X509_AUX(X509 *a, unsigned char **pp)
231 /* Buffer provided by caller */
232 if (pp == NULL || *pp != NULL)
233 return i2d_x509_aux_internal(a, pp);
235 /* Obtain the combined length */
236 if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
239 /* Allocate requisite combined storage */
240 *pp = tmp = OPENSSL_malloc(length);
242 return -1; /* Push error onto error stack? */
244 /* Encode, but keep *pp at the originally malloced pointer */
245 length = i2d_x509_aux_internal(a, &tmp);
253 int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
255 x->cert_info.enc.modified = 1;
256 return i2d_X509_CINF(&x->cert_info, pp);
259 void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, X509 *x)
262 *psig = &x->signature;
267 int X509_get_signature_nid(const X509 *x)
269 return OBJ_obj2nid(x->sig_alg.algorithm);