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:
46 ret->ex_pcpathlen = -1;
49 #ifndef OPENSSL_NO_RFC3779
50 ret->rfc3779_addr = NULL;
51 ret->rfc3779_asid = NULL;
55 if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data))
59 case ASN1_OP_FREE_POST:
60 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_X509, ret, &ret->ex_data);
61 X509_CERT_AUX_free(ret->aux);
62 ASN1_OCTET_STRING_free(ret->skid);
63 AUTHORITY_KEYID_free(ret->akid);
64 CRL_DIST_POINTS_free(ret->crldp);
65 policy_cache_free(ret->policy_cache);
66 GENERAL_NAMES_free(ret->altname);
67 NAME_CONSTRAINTS_free(ret->nc);
68 #ifndef OPENSSL_NO_RFC3779
69 sk_IPAddressFamily_pop_free(ret->rfc3779_addr, IPAddressFamily_free);
70 ASIdentifiers_free(ret->rfc3779_asid);
80 ASN1_SEQUENCE_ref(X509, x509_cb) = {
81 ASN1_EMBED(X509, cert_info, X509_CINF),
82 ASN1_EMBED(X509, sig_alg, X509_ALGOR),
83 ASN1_EMBED(X509, signature, ASN1_BIT_STRING)
84 } ASN1_SEQUENCE_END_ref(X509, X509)
86 IMPLEMENT_ASN1_FUNCTIONS(X509)
88 IMPLEMENT_ASN1_DUP_FUNCTION(X509)
90 int X509_set_ex_data(X509 *r, int idx, void *arg)
92 return (CRYPTO_set_ex_data(&r->ex_data, idx, arg));
95 void *X509_get_ex_data(X509 *r, int idx)
97 return (CRYPTO_get_ex_data(&r->ex_data, idx));
101 * X509_AUX ASN1 routines. X509_AUX is the name given to a certificate with
102 * extra info tagged on the end. Since these functions set how a certificate
103 * is trusted they should only be used when the certificate comes from a
104 * reliable source such as local storage.
107 X509 *d2i_X509_AUX(X509 **a, const unsigned char **pp, long length)
109 const unsigned char *q;
113 /* Save start position */
116 if (a == NULL || *a == NULL)
118 ret = d2i_X509(a, &q, length);
119 /* If certificate unreadable then forget it */
124 if (length > 0 && !d2i_X509_CERT_AUX(&ret->aux, &q, length))
138 * Serialize trusted certificate to *pp or just return the required buffer
139 * length if pp == NULL. We ultimately want to avoid modifying *pp in the
140 * error path, but that depends on similar hygiene in lower-level functions.
141 * Here we avoid compounding the problem.
143 static int i2d_x509_aux_internal(X509 *a, unsigned char **pp)
146 unsigned char *start = pp != NULL ? *pp : NULL;
148 OPENSSL_assert(pp == NULL || *pp != NULL);
151 * This might perturb *pp on error, but fixing that belongs in i2d_X509()
152 * not here. It should be that if a == NULL length is zero, but we check
155 length = i2d_X509(a, pp);
156 if (length <= 0 || a == NULL)
159 tmplen = i2d_X509_CERT_AUX(a->aux, pp);
171 * Serialize trusted certificate to *pp, or just return the required buffer
172 * length if pp == NULL.
174 * When pp is not NULL, but *pp == NULL, we allocate the buffer, but since
175 * we're writing two ASN.1 objects back to back, we can't have i2d_X509() do
176 * the allocation, nor can we allow i2d_X509_CERT_AUX() to increment the
179 int i2d_X509_AUX(X509 *a, unsigned char **pp)
184 /* Buffer provided by caller */
185 if (pp == NULL || *pp != NULL)
186 return i2d_x509_aux_internal(a, pp);
188 /* Obtain the combined length */
189 if ((length = i2d_x509_aux_internal(a, NULL)) <= 0)
192 /* Allocate requisite combined storage */
193 *pp = tmp = OPENSSL_malloc(length);
195 return -1; /* Push error onto error stack? */
197 /* Encode, but keep *pp at the originally malloced pointer */
198 length = i2d_x509_aux_internal(a, &tmp);
206 int i2d_re_X509_tbs(X509 *x, unsigned char **pp)
208 x->cert_info.enc.modified = 1;
209 return i2d_X509_CINF(&x->cert_info, pp);
212 void X509_get0_signature(const ASN1_BIT_STRING **psig,
213 const X509_ALGOR **palg, const X509 *x)
216 *psig = &x->signature;
221 int X509_get_signature_nid(const X509 *x)
223 return OBJ_obj2nid(x->sig_alg.algorithm);