/*
 * ProFTPD - mod_auth_otp
 * Copyright (c) 2015-2023 TJ Saunders
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
 *
 * As a special exemption, TJ Saunders and other respective copyright holders
 * give permission to link this program with OpenSSL, and distribute the
 * resulting executable, without including the source code for OpenSSL in the
 * source distribution.
 */

#ifndef MOD_AUTH_OTP_H
#define MOD_AUTH_OTP_H

#include "conf.h"
#include "privs.h"

/* Define if you have OpenSSL with SHA256 support. */
#undef HAVE_SHA256_OPENSSL

/* Define if you have OpenSSL with SHA512 support. */
#undef HAVE_SHA512_OPENSSL

/* Define if you have mod_sftp support. */
#undef HAVE_SFTP

#define MOD_AUTH_OTP_VERSION	"mod_auth_otp/0.4"

/* Make sure the version of proftpd is as necessary. */
#if PROFTPD_VERSION_NUMBER < 0x0001030402
# error "ProFTPD 1.3.4rc2 or later required"
#endif

#include <openssl/conf.h>
#include <openssl/evp.h>
#include <openssl/hmac.h>
#include <openssl/err.h>
#include <openssl/rand.h>

/* Define if you have the LibreSSL library.  */
#if defined(LIBRESSL_VERSION_NUMBER)
# define HAVE_LIBRESSL	1
#endif

/* mod_auth_otp option flags */

/* Miscellaneous */
extern int auth_otp_logfd;
extern pool *auth_otp_pool;
extern unsigned long auth_otp_opts;

/* Supported OTP algorithms */
#define AUTH_OTP_ALGO_HOTP		1
#define AUTH_OTP_ALGO_TOTP_SHA1		2
#define AUTH_OTP_ALGO_TOTP_SHA256	3
#define AUTH_OTP_ALGO_TOTP_SHA512	4

#endif
