/**
 * Copyright (c) 2019-2020 Paul-Louis Ageneau
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef RTC_TLS_H
#define RTC_TLS_H

#include "common.hpp"

#if USE_GNUTLS

#include <gnutls/gnutls.h>

#include <gnutls/crypto.h>
#include <gnutls/dtls.h>
#include <gnutls/x509.h>

namespace rtc::gnutls {

bool check(int ret, const string &message = "GnuTLS error");

gnutls_certificate_credentials_t *new_credentials();
void free_credentials(gnutls_certificate_credentials_t *creds);

gnutls_x509_crt_t *new_crt();
void free_crt(gnutls_x509_crt_t *crt);

gnutls_x509_privkey_t *new_privkey();
void free_privkey(gnutls_x509_privkey_t *privkey);

gnutls_datum_t make_datum(char *data, size_t size);

} // namespace rtc::gnutls

#else // USE_GNUTLS==0

#ifdef _WIN32
// Include winsock2.h header first since OpenSSL may include winsock.h
#include <winsock2.h>
#endif

#include <openssl/ssl.h>

#include <openssl/bio.h>
#include <openssl/bn.h>
#include <openssl/ec.h>
#include <openssl/ec.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <openssl/rsa.h>
#include <openssl/x509.h>

#ifndef BIO_EOF
#define BIO_EOF -1
#endif

namespace rtc::openssl {

void init();
string error_string(unsigned long err);

bool check(int success, const string &message = "OpenSSL error");
bool check(SSL *ssl, int ret, const string &message = "OpenSSL error");

BIO *BIO_new_from_file(const string &filename);

} // namespace rtc::openssl

#endif

#endif