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/*
* ProFTPD - mod_auth_otp database routines
* Copyright (c) 2015-2016 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_DB_H
#define MOD_AUTH_OTP_DB_H
#include "mod_auth_otp.h"
struct auth_otp_db {
pool *pool;
const char *select_query;
const char *update_query;
/* Database locking support. */
struct flock db_lock;
int db_lockfd;
};
int auth_otp_db_close(struct auth_otp_db *dbh);
struct auth_otp_db *auth_otp_db_open(pool *p, const char *dbinfo);
int auth_otp_db_rlock(struct auth_otp_db *dbh);
int auth_otp_db_wlock(struct auth_otp_db *dbh);
int auth_otp_db_unlock(struct auth_otp_db *dbh);
/* Ask if the table has info (secrets, counters) for this user. */
int auth_otp_db_have_user_info(pool *p, struct auth_otp_db *dbh,
const char *user);
/* Retrieve the user's base32-encoded secret, and current counter (for HOTP). */
int auth_otp_db_get_user_info(pool *p, struct auth_otp_db *dbh,
const char *user, const unsigned char **secret, size_t *secret_len,
unsigned long *counter);
/* Update the user's current counter (for HOTP). */
int auth_otp_db_update_counter(struct auth_otp_db *dbh, const char *user,
unsigned long counter);
#endif /* MOD_AUTH_OTP_DB_H */
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