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/* $OpenBSD: ocsp_lib.c,v 1.28 2024/08/28 06:27:19 tb Exp $ */
/* Written by Tom Titchener <Tom_Titchener@groove.net> for the OpenSSL
* project. */
/* History:
This file was transfered to Richard Levitte from CertCo by Kathy
Weinhold in mid-spring 2000 to be included in OpenSSL or released
as a patch kit. */
/* ====================================================================
* Copyright (c) 1998-2000 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
* openssl-core@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).
*
*/
#include <stdio.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/asn1t.h>
#include <openssl/err.h>
#include <openssl/objects.h>
#include <openssl/ocsp.h>
#include <openssl/pem.h>
#include <openssl/x509.h>
#include <openssl/x509v3.h>
#include "ocsp_local.h"
#include "x509_local.h"
/* Convert a certificate and its issuer to an OCSP_CERTID */
OCSP_CERTID *
OCSP_cert_to_id(const EVP_MD *dgst, const X509 *subject, const X509 *issuer)
{
X509_NAME *iname;
const ASN1_INTEGER *serial;
ASN1_BIT_STRING *ikey;
#ifndef OPENSSL_NO_SHA1
if (!dgst)
dgst = EVP_sha1();
#endif
if (subject) {
iname = X509_get_issuer_name(subject);
serial = X509_get0_serialNumber(subject);
} else {
iname = X509_get_subject_name(issuer);
serial = NULL;
}
if ((ikey = X509_get0_pubkey_bitstr(issuer)) == NULL)
return NULL;
return OCSP_cert_id_new(dgst, iname, ikey, serial);
}
LCRYPTO_ALIAS(OCSP_cert_to_id);
OCSP_CERTID *
OCSP_cert_id_new(const EVP_MD *dgst, const X509_NAME *issuerName,
const ASN1_BIT_STRING *issuerKey, const ASN1_INTEGER *serialNumber)
{
int nid;
unsigned int i;
OCSP_CERTID *cid = NULL;
unsigned char md[EVP_MAX_MD_SIZE];
if ((cid = OCSP_CERTID_new()) == NULL)
goto err;
if ((nid = EVP_MD_type(dgst)) == NID_undef) {
OCSPerror(OCSP_R_UNKNOWN_NID);
goto err;
}
if (!X509_ALGOR_set0_by_nid(cid->hashAlgorithm, nid, V_ASN1_NULL, NULL))
goto err;
if (!X509_NAME_digest(issuerName, dgst, md, &i)) {
OCSPerror(OCSP_R_DIGEST_ERR);
goto err;
}
if (!ASN1_OCTET_STRING_set(cid->issuerNameHash, md, i))
goto err;
/* Calculate the issuerKey hash, excluding tag and length */
if (!EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst, NULL))
goto err;
if (!ASN1_OCTET_STRING_set(cid->issuerKeyHash, md, i))
goto err;
if (serialNumber != NULL) {
ASN1_INTEGER_free(cid->serialNumber);
if ((cid->serialNumber = ASN1_INTEGER_dup(serialNumber)) == NULL)
goto err;
}
return cid;
err:
OCSP_CERTID_free(cid);
return NULL;
}
LCRYPTO_ALIAS(OCSP_cert_id_new);
int
OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
{
int ret;
/*
* XXX - should we really ignore parameters here? We probably need to
* consider omitted parameters and explicit ASN.1 NULL as equal for
* the SHAs, so don't blindly switch to X509_ALGOR_cmp().
*/
ret = OBJ_cmp(a->hashAlgorithm->algorithm, b->hashAlgorithm->algorithm);
if (ret)
return ret;
ret = ASN1_OCTET_STRING_cmp(a->issuerNameHash, b->issuerNameHash);
if (ret)
return ret;
return ASN1_OCTET_STRING_cmp(a->issuerKeyHash, b->issuerKeyHash);
}
LCRYPTO_ALIAS(OCSP_id_issuer_cmp);
int
OCSP_id_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
{
int ret;
ret = OCSP_id_issuer_cmp(a, b);
if (ret)
return ret;
return ASN1_INTEGER_cmp(a->serialNumber, b->serialNumber);
}
LCRYPTO_ALIAS(OCSP_id_cmp);
/* Parse a URL and split it up into host, port and path components and whether
* it is SSL.
*/
int
OCSP_parse_url(const char *url, char **phost, char **pport, char **ppath,
int *pssl)
{
char *host, *path, *port, *tmp;
*phost = *pport = *ppath = NULL;
*pssl = 0;
if (strncmp(url, "https://", 8) == 0) {
*pssl = 1;
host = strdup(url + 8);
} else if (strncmp(url, "http://", 7) == 0)
host = strdup(url + 7);
else {
OCSPerror(OCSP_R_ERROR_PARSING_URL);
return 0;
}
if (host == NULL) {
OCSPerror(ERR_R_MALLOC_FAILURE);
return 0;
}
if ((tmp = strchr(host, '/')) != NULL) {
path = strdup(tmp);
*tmp = '\0';
} else
path = strdup("/");
if ((tmp = strchr(host, ':')) != NULL ) {
port = strdup(tmp + 1);
*tmp = '\0';
} else {
if (*pssl)
port = strdup("443");
else
port = strdup("80");
}
if (path == NULL || port == NULL) {
free(host);
free(path);
free(port);
OCSPerror(ERR_R_MALLOC_FAILURE);
return 0;
}
*phost = host;
*ppath = path;
*pport = port;
return 1;
}
LCRYPTO_ALIAS(OCSP_parse_url);
OCSP_CERTID *
OCSP_CERTID_dup(OCSP_CERTID *x)
{
return ASN1_item_dup(&OCSP_CERTID_it, x);
}
LCRYPTO_ALIAS(OCSP_CERTID_dup);
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