240 lines
6.5 KiB
C
240 lines
6.5 KiB
C
|
/* $OpenBSD: ocsp_lib.c,v 1.23 2018/08/24 20:03:21 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>
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
ikey = X509_get0_pubkey_bitstr(issuer);
|
||
|
|
return OCSP_cert_id_new(dgst, iname, ikey, serial);
|
||
|
|
}
|
||
|
|
|
||
|
|
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;
|
||
|
|
X509_ALGOR *alg;
|
||
|
|
OCSP_CERTID *cid = NULL;
|
||
|
|
unsigned char md[EVP_MAX_MD_SIZE];
|
||
|
|
|
||
|
|
if (!(cid = OCSP_CERTID_new()))
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
alg = cid->hashAlgorithm;
|
||
|
|
if (alg->algorithm != NULL)
|
||
|
|
ASN1_OBJECT_free(alg->algorithm);
|
||
|
|
if ((nid = EVP_MD_type(dgst)) == NID_undef) {
|
||
|
|
OCSPerror(OCSP_R_UNKNOWN_NID);
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
if (!(alg->algorithm = OBJ_nid2obj(nid)))
|
||
|
|
goto err;
|
||
|
|
if ((alg->parameter = ASN1_TYPE_new()) == NULL)
|
||
|
|
goto err;
|
||
|
|
alg->parameter->type = V_ASN1_NULL;
|
||
|
|
|
||
|
|
if (!X509_NAME_digest(issuerName, dgst, md, &i))
|
||
|
|
goto digerr;
|
||
|
|
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) {
|
||
|
|
ASN1_INTEGER_free(cid->serialNumber);
|
||
|
|
if (!(cid->serialNumber = ASN1_INTEGER_dup(serialNumber)))
|
||
|
|
goto err;
|
||
|
|
}
|
||
|
|
return cid;
|
||
|
|
|
||
|
|
digerr:
|
||
|
|
OCSPerror(OCSP_R_DIGEST_ERR);
|
||
|
|
err:
|
||
|
|
if (cid)
|
||
|
|
OCSP_CERTID_free(cid);
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
OCSP_id_issuer_cmp(OCSP_CERTID *a, OCSP_CERTID *b)
|
||
|
|
{
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
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);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
OCSP_CERTID *
|
||
|
|
OCSP_CERTID_dup(OCSP_CERTID *x)
|
||
|
|
{
|
||
|
|
return ASN1_item_dup(&OCSP_CERTID_it, x);
|
||
|
|
}
|