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/* Copyright (C) 2022 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 <https://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include "knot/dnssec/policy.h"
#include "libknot/rrtype/soa.h"
static uint32_t zone_soa_ttl(const zone_contents_t *zone)
{
knot_rrset_t soa = node_rrset(zone->apex, KNOT_RRTYPE_SOA);
return soa.ttl;
}
void update_policy_from_zone(knot_kasp_policy_t *policy,
const zone_contents_t *zone)
{
assert(policy);
assert(zone);
if (policy->dnskey_ttl == UINT32_MAX) {
policy->dnskey_ttl = zone_soa_ttl(zone);
}
if (policy->saved_key_ttl == 0) { // possibly not set yet
policy->saved_key_ttl = policy->dnskey_ttl;
}
if (policy->zone_maximal_ttl == UINT32_MAX) {
policy->zone_maximal_ttl = zone->max_ttl;
if (policy->rrsig_refresh_before == UINT32_MAX) {
policy->rrsig_refresh_before = policy->propagation_delay +
policy->zone_maximal_ttl;
}
}
if (policy->saved_max_ttl == 0) { // possibly not set yet
policy->saved_max_ttl = policy->zone_maximal_ttl;
}
}
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