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/*
* OpenVPN -- An application to securely tunnel IP networks
* over a single TCP/UDP port, with support for SSL/TLS-based
* session authentication and key exchange,
* packet encryption, packet authentication, and
* packet compression.
*
* Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
* Copyright (C) 2010 Fox Crypto B.V. <openvpn@fox-it.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program (see the file COPYING included with this
* distribution); if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @file PKCS #11 OpenSSL backend
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif defined(_MSC_VER)
#include "config-msvc.h"
#endif
#include "syshead.h"
#if defined(ENABLE_PKCS11) && defined(ENABLE_CRYPTO_OPENSSL)
#include "errlevel.h"
#include "pkcs11_backend.h"
#include "ssl_verify.h"
#include <pkcs11-helper-1.0/pkcs11h-openssl.h>
int
pkcs11_init_tls_session(pkcs11h_certificate_t certificate,
struct tls_root_ctx * const ssl_ctx)
{
int ret = 1;
X509 *x509 = NULL;
EVP_PKEY *evp = NULL;
pkcs11h_openssl_session_t openssl_session = NULL;
if ((openssl_session = pkcs11h_openssl_createSession (certificate)) == NULL)
{
msg (M_WARN, "PKCS#11: Cannot initialize openssl session");
goto cleanup;
}
/*
* Will be released by openssl_session
*/
certificate = NULL;
if ((evp = pkcs11h_openssl_session_getEVP (openssl_session)) == NULL)
{
msg (M_WARN, "PKCS#11: Unable get evp object");
goto cleanup;
}
if ((x509 = pkcs11h_openssl_session_getX509 (openssl_session)) == NULL)
{
msg (M_WARN, "PKCS#11: Unable get certificate object");
goto cleanup;
}
if (!SSL_CTX_use_PrivateKey (ssl_ctx->ctx, evp))
{
msg (M_WARN, "PKCS#11: Cannot set private key for openssl");
goto cleanup;
}
if (!SSL_CTX_use_certificate (ssl_ctx->ctx, x509))
{
msg (M_WARN, "PKCS#11: Cannot set certificate for openssl");
goto cleanup;
}
ret = 0;
cleanup:
/*
* Certificate freeing is usually handled by openssl_session.
* If something went wrong, creating the session we have to do it manually.
*/
if (certificate != NULL) {
pkcs11h_certificate_freeCertificate (certificate);
certificate = NULL;
}
/*
* openssl objects have reference
* count, so release them
*/
if (x509 != NULL)
{
X509_free (x509);
x509 = NULL;
}
if (evp != NULL)
{
EVP_PKEY_free (evp);
evp = NULL;
}
if (openssl_session != NULL)
{
pkcs11h_openssl_freeSession (openssl_session);
openssl_session = NULL;
}
return ret;
}
char *
pkcs11_certificate_dn (pkcs11h_certificate_t certificate, struct gc_arena *gc)
{
X509 *x509 = NULL;
char *dn = NULL;
if ((x509 = pkcs11h_openssl_getX509 (certificate)) == NULL)
{
msg (M_FATAL, "PKCS#11: Cannot get X509");
goto cleanup;
}
dn = x509_get_subject (x509, gc);
cleanup:
if (x509 != NULL)
{
X509_free (x509);
x509 = NULL;
}
return dn;
}
int
pkcs11_certificate_serial (pkcs11h_certificate_t certificate, char *serial,
size_t serial_len)
{
X509 *x509 = NULL;
BIO *bio = NULL;
int ret = 1;
int n;
if ((x509 = pkcs11h_openssl_getX509 (certificate)) == NULL)
{
msg (M_FATAL, "PKCS#11: Cannot get X509");
goto cleanup;
}
if ((bio = BIO_new (BIO_s_mem ())) == NULL)
{
msg (M_FATAL, "PKCS#11: Cannot create BIO");
goto cleanup;
}
i2a_ASN1_INTEGER(bio, X509_get_serialNumber (x509));
n = BIO_read (bio, serial, serial_len-1);
if (n<0) {
serial[0] = '\x0';
}
else {
serial[n] = 0;
}
ret = 0;
cleanup:
if (x509 != NULL)
{
X509_free (x509);
x509 = NULL;
}
return ret;
}
#endif /* defined(ENABLE_PKCS11) && defined(ENABLE_OPENSSL) */
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