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/* Copyright (C) 2014 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
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 3 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, see <http://www.gnu.org/licenses/>.
*/
/*!
* \file policy.h
*
* \author Jan Vcelak <jan.vcelak@nic.cz>
*
* \brief Policy for handling of DNSSEC signatures and keys.
*
* \addtogroup dnssec
* @{
*/
#ifndef _KNOT_DNSSEC_POLICY_H_
#define _KNOT_DNSSEC_POLICY_H_
#include <stdbool.h>
#include <stdint.h>
typedef enum knot_update_serial {
KNOT_SOA_SERIAL_UPDATE = 1 << 0,
KNOT_SOA_SERIAL_KEEP = 1 << 1
} knot_update_serial_t;
typedef struct {
uint32_t now; //! Current time.
uint32_t refresh_before; //! Refresh signatures expiring before to this time.
uint32_t sign_lifetime; //! Signature life time.
bool forced_sign; //! Drop valid signatures as well.
knot_update_serial_t soa_up;//! Policy for serial updating.
} knot_dnssec_policy_t;
#define KNOT_DNSSEC_DEFAULT_LIFETIME 2592000
/*!
* \brief Initialize default signing policy.
*/
void knot_dnssec_init_default_policy(knot_dnssec_policy_t *policy);
/*!
* \brief Set policy timing data according to requested signature lifetime.
*/
void knot_dnssec_policy_set_sign_lifetime(knot_dnssec_policy_t *policy,
uint32_t sign_lifetime);
/*!
* \brief Get signature refresh time from the earliest expiration time.
*/
uint32_t knot_dnssec_policy_refresh_time(const knot_dnssec_policy_t *policy,
uint32_t earliest_expiration);
#endif // _KNOT_DNSSEC_POLICY_H_
/*! @} */
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