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/* $OpenBSD: ct_x509v3.c,v 1.6 2021/12/25 15:42:32 tb Exp $ */
/*
* Written by Rob Stradling (rob@comodo.com) and Stephen Henson
* (steve@openssl.org) for the OpenSSL project 2014.
*/
/* ====================================================================
* Copyright (c) 2014 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#ifdef OPENSSL_NO_CT
# error "CT is disabled"
#endif
#include <string.h>
#include "ct_local.h"
static char *
i2s_poison(const X509V3_EXT_METHOD *method, void *val)
{
return strdup("NULL");
}
static void *
s2i_poison(const X509V3_EXT_METHOD *method, X509V3_CTX *ctx, const char *str)
{
return ASN1_NULL_new();
}
static int
i2r_SCT_LIST(X509V3_EXT_METHOD *method, STACK_OF(SCT) *sct_list, BIO *out,
int indent)
{
SCT_LIST_print(sct_list, out, indent, "\n", NULL);
return 1;
}
static int
set_sct_list_source(STACK_OF(SCT) *s, sct_source_t source)
{
if (s != NULL) {
int i;
for (i = 0; i < sk_SCT_num(s); i++) {
int res = SCT_set_source(sk_SCT_value(s, i), source);
if (res != 1) {
return 0;
}
}
}
return 1;
}
static STACK_OF(SCT) *
x509_ext_d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp, long len)
{
STACK_OF(SCT) *s = d2i_SCT_LIST(a, pp, len);
if (set_sct_list_source(s, SCT_SOURCE_X509V3_EXTENSION) != 1) {
SCT_LIST_free(s);
*a = NULL;
return NULL;
}
return s;
}
static STACK_OF(SCT) *
ocsp_ext_d2i_SCT_LIST(STACK_OF(SCT) **a, const unsigned char **pp, long len)
{
STACK_OF(SCT) *s = d2i_SCT_LIST(a, pp, len);
if (set_sct_list_source(s, SCT_SOURCE_OCSP_STAPLED_RESPONSE) != 1) {
SCT_LIST_free(s);
*a = NULL;
return NULL;
}
return s;
}
/* Handlers for X509v3/OCSP Certificate Transparency extensions */
const X509V3_EXT_METHOD v3_ct_scts[3] = {
/* X509v3 extension in certificates that contains SCTs */
[0] = {
.ext_nid = NID_ct_precert_scts,
.ext_flags = 0,
.it = NULL,
.ext_new = NULL,
.ext_free = (X509V3_EXT_FREE)SCT_LIST_free,
.d2i = (X509V3_EXT_D2I)x509_ext_d2i_SCT_LIST,
.i2d = (X509V3_EXT_I2D)i2d_SCT_LIST,
.i2s = NULL,
.s2i = NULL,
.i2v = NULL,
.v2i = NULL,
.i2r = (X509V3_EXT_I2R)i2r_SCT_LIST,
.r2i = NULL,
.usr_data = NULL,
},
/* X509v3 extension to mark a certificate as a pre-certificate */
[1] = {
.ext_nid = NID_ct_precert_poison,
.ext_flags = 0,
.it = &ASN1_NULL_it,
.ext_new = NULL,
.ext_free = NULL,
.d2i = NULL,
.i2d = NULL,
.i2s = i2s_poison,
.s2i = s2i_poison,
.i2v = NULL,
.v2i = NULL,
.i2r = NULL,
.r2i = NULL,
.usr_data = NULL,
},
/* OCSP extension that contains SCTs */
[2] = {
.ext_nid = NID_ct_cert_scts,
.ext_flags = 0,
.it = NULL,
.ext_new = NULL,
.ext_free = (X509V3_EXT_FREE)SCT_LIST_free,
.d2i = (X509V3_EXT_D2I)ocsp_ext_d2i_SCT_LIST,
.i2d = (X509V3_EXT_I2D)i2d_SCT_LIST,
.i2s = NULL,
.s2i = NULL,
.i2v = NULL,
.v2i = NULL,
.i2r = (X509V3_EXT_I2R)i2r_SCT_LIST,
.r2i = NULL,
.usr_data = NULL,
},
};
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