2 * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
11 #include "internal/cryptlib.h"
12 #include <openssl/evp.h>
13 #include <openssl/asn1t.h>
14 #include <openssl/x509.h>
15 #include <openssl/x509v3.h>
16 #include "internal/x509_int.h"
18 ASN1_SEQUENCE_enc(X509_CINF, enc, 0) = {
19 ASN1_EXP_OPT(X509_CINF, version, ASN1_INTEGER, 0),
20 ASN1_EMBED(X509_CINF, serialNumber, ASN1_INTEGER),
21 ASN1_EMBED(X509_CINF, signature, X509_ALGOR),
22 ASN1_SIMPLE(X509_CINF, issuer, X509_NAME),
23 ASN1_EMBED(X509_CINF, validity, X509_VAL),
24 ASN1_SIMPLE(X509_CINF, subject, X509_NAME),
25 ASN1_SIMPLE(X509_CINF, key, X509_PUBKEY),
26 ASN1_IMP_OPT(X509_CINF, issuerUID, ASN1_BIT_STRING, 1),
27 ASN1_IMP_OPT(X509_CINF, subjectUID, ASN1_BIT_STRING, 2),
28 ASN1_EXP_SEQUENCE_OF_OPT(X509_CINF, extensions, X509_EXTENSION, 3)
29 } ASN1_SEQUENCE_END_enc(X509_CINF, X509_CINF)
31 IMPLEMENT_ASN1_FUNCTIONS(X509_CINF)
32 /* X509 top level structure needs a bit of customisation */
34 extern void policy_cache_free(X509_POLICY_CACHE *cache);
36 static int x509_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it,
39 X509 *ret = (X509 *)*pval;
43 case ASN1_OP_NEW_POST:
48 #ifndef OPENSSL_NO_RFC3779
49 ret->rfc3779_addr = NULL;
50 ret->rfc3779_asid = NULL;
54 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data))
58 case ASN1_OP_FREE_POST:
59 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
60 X509_CERT_AUX_free(ret->aux);
61 ASN1_OCTET_STRING_free(ret->skid);
62 AUTHORITY_KEYID_free(ret->akid);
63 CRL_DIST_POINTS_free(ret->crldp);
64 policy_cache_free(ret->policy_cache);
65 GENERAL_NAMES_free(ret->altname);
66 NAME_CONSTRAINTS_free(ret->nc);
67 #ifndef OPENSSL_NO_RFC3779
68 sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
69 ASIdentifiers_free(ret->rfc3779_asid);
79 ASN1_SEQUENCE_ref(X509, x509_cb) = {
80 ASN1_EMBED(X509, cert_info, X509_CINF),
81 ASN1_EMBED(X509, sig_alg, X509_ALGOR),
82 ASN1_EMBED(X509, signature, ASN1_BIT_STRING)
83 } ASN1_SEQUENCE_END_ref(X509, X509)
85 IMPLEMENT_ASN1_FUNCTIONS(X509)
87 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
89 int X509_set_ex_data(X509 *r, int idx, void *arg)
91 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
94 void *X509_get_ex_data(X509 *r, int idx)
96 return (CRYPTO_get_ex_data(&r->ex_data, idx));
100 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
101 * extra info tagged on the end. Since these functions set how a certificate
102 * is trusted they should only be used when the certificate comes from a
103 * reliable source such as local storage.
106 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
108 const unsigned char *q;
112 /* Save start position */
115 if (a == NULL || *a == NULL)
117 ret = d2i_X509(a, &q, length);
118 /* If certificate unreadable then forget it */
123 if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
137 * Serialize trusted certificate to *pp or just return the required buffer
138 * length if pp == NULL. We ultimately want to avoid modifying *pp in the
139 * error path, but that depends on similar hygiene in lower-level functions.
140 * Here we avoid compounding the problem.
142 static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
145 unsigned char *start = pp != NULL ? *pp : NULL;
147 OPENSSL_assert(pp == NULL || *pp != NULL);
150 * This might perturb *pp on error, but fixing that belongs in i2d_X509()
151 * not here. It should be that if a == NULL length is zero, but we check
154 length = i2d_X509(a, pp);
155 if (length <= 0 || a == NULL)
158 tmplen = i2d_X509_CERT_AUX(a->aux, pp);
170 * Serialize trusted certificate to *pp, or just return the required buffer
171 * length if pp == NULL.
173 * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
174 * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
175 * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
178 int i2d_X509_AUX(X509 *a, unsigned char **pp)
183 /* Buffer provided by caller */
184 if (pp == NULL || *pp != NULL)
185 return i2d_x509_aux_internal(a, pp);
187 /* Obtain the combined length */
188 if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
191 /* Allocate requisite combined storage */
192 *pp = tmp = OPENSSL_malloc(length);
194 return -1; /* Push error onto error stack? */
196 /* Encode, but keep *pp at the originally malloced pointer */
197 length = i2d_x509_aux_internal(a, &tmp);
205 int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
207 x->cert_info.enc.modified = 1;
208 return i2d_X509_CINF(&x->cert_info, pp);
211 void X509_get0_signature(ASN1_BIT_STRING **psig, X509_ALGOR **palg, X509 *x)
214 *psig = &x->signature;
219 int X509_get_signature_nid(const X509 *x)
221 return OBJ_obj2nid(x->sig_alg.algorithm);