261 lines
6.9 KiB
C
261 lines
6.9 KiB
C
/* ocsp_lib.c */
|
|
/* 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 <cryptlib.h>
|
|
#include <openssl/objects.h>
|
|
#include <openssl/rand.h>
|
|
#include <openssl/x509.h>
|
|
#include <openssl/pem.h>
|
|
#include <openssl/x509v3.h>
|
|
#include <openssl/ocsp.h>
|
|
|
|
/* Convert a certificate and its issuer to an OCSP_CERTID */
|
|
|
|
OCSP_CERTID *OCSP_cert_to_id(const EVP_MD *dgst, X509 *subject, X509 *issuer)
|
|
{
|
|
X509_NAME *iname;
|
|
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_get_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,
|
|
X509_NAME *issuerName,
|
|
ASN1_BIT_STRING* issuerKey,
|
|
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)
|
|
{
|
|
OCSPerr(OCSP_F_CERT_ID_NEW,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 */
|
|
EVP_Digest(issuerKey->data, issuerKey->length, md, &i, dgst);
|
|
|
|
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:
|
|
OCSPerr(OCSP_F_CERT_ID_NEW,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(char *url, char **phost, char **pport, char **ppath, int *pssl)
|
|
{
|
|
char *p, *buf;
|
|
|
|
char *host, *port;
|
|
|
|
/* dup the buffer since we are going to mess with it */
|
|
buf = BUF_strdup(url);
|
|
if (!buf) goto mem_err;
|
|
|
|
*phost = NULL;
|
|
*pport = NULL;
|
|
*ppath = NULL;
|
|
|
|
/* Check for initial colon */
|
|
p = strchr(buf, ':');
|
|
|
|
if (!p) goto parse_err;
|
|
|
|
*(p++) = '\0';
|
|
|
|
if (!strcmp(buf, "http"))
|
|
{
|
|
*pssl = 0;
|
|
port = "80";
|
|
}
|
|
else if (!strcmp(buf, "https"))
|
|
{
|
|
*pssl = 1;
|
|
port = "443";
|
|
}
|
|
else
|
|
goto parse_err;
|
|
|
|
/* Check for double slash */
|
|
if ((p[0] != '/') || (p[1] != '/'))
|
|
goto parse_err;
|
|
|
|
p += 2;
|
|
|
|
host = p;
|
|
|
|
/* Check for trailing part of path */
|
|
|
|
p = strchr(p, '/');
|
|
|
|
if (!p)
|
|
*ppath = BUF_strdup("/");
|
|
else
|
|
{
|
|
*ppath = BUF_strdup(p);
|
|
/* Set start of path to 0 so hostname is valid */
|
|
*p = '\0';
|
|
}
|
|
|
|
if (!*ppath) goto mem_err;
|
|
|
|
/* Look for optional ':' for port number */
|
|
if ((p = strchr(host, ':')))
|
|
{
|
|
*p = 0;
|
|
port = p + 1;
|
|
}
|
|
else
|
|
{
|
|
/* Not found: set default port */
|
|
if (*pssl) port = "443";
|
|
else port = "80";
|
|
}
|
|
|
|
*pport = BUF_strdup(port);
|
|
if (!*pport) goto mem_err;
|
|
|
|
*phost = BUF_strdup(host);
|
|
|
|
if (!*phost) goto mem_err;
|
|
|
|
OPENSSL_free(buf);
|
|
|
|
return 1;
|
|
|
|
mem_err:
|
|
OCSPerr(OCSP_F_OCSP_PARSE_URL, ERR_R_MALLOC_FAILURE);
|
|
goto err;
|
|
|
|
parse_err:
|
|
OCSPerr(OCSP_F_OCSP_PARSE_URL, OCSP_R_ERROR_PARSING_URL);
|
|
|
|
|
|
err:
|
|
if (*ppath) OPENSSL_free(*ppath);
|
|
if (*pport) OPENSSL_free(*pport);
|
|
if (*phost) OPENSSL_free(*phost);
|
|
return 0;
|
|
|
|
}
|