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/* Copyright (C) CZ.NIC, z.s.p.o. <knot-resolver@labs.nic.cz>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#pragma once
#include "lib/defines.h"
#include "lib/generic/trie.h"
#include <libknot/rrset.h>
/**
* Find TA RRSet by name.
* @param trust_anchors trust store
* @param name name of the TA
* @return non-empty RRSet or NULL
*/
KR_EXPORT
knot_rrset_t *kr_ta_get(trie_t *trust_anchors, const knot_dname_t *name);
/**
* Add TA to trust store. DS or DNSKEY types are supported.
* @param trust_anchors trust store
* @param name name of the TA
* @param type RR type of the TA (DS or DNSKEY)
* @param ttl
* @param rdata
* @param rdlen
* @return 0 or an error
*/
KR_EXPORT
int kr_ta_add(trie_t *trust_anchors, const knot_dname_t *name, uint16_t type,
uint32_t ttl, const uint8_t *rdata, uint16_t rdlen);
struct kr_context;
/**
* Return pointer to the name of the closest positive trust anchor or NULL.
*
* "Closest" means on path towards root. Closer negative anchor results into NULL.
* @param type serves as a shorthand because DS needs to start one level higher.
*/
KR_EXPORT KR_PURE
const knot_dname_t * kr_ta_closest(const struct kr_context *ctx, const knot_dname_t *name,
const uint16_t type);
/**
* Remove TA from trust store.
* @param trust_anchors trust store
* @param name name of the TA
* @return 0 or an error
*/
KR_EXPORT
int kr_ta_del(trie_t *trust_anchors, const knot_dname_t *name);
/**
* Clear trust store.
* @param trust_anchors trust store
*/
KR_EXPORT
void kr_ta_clear(trie_t *trust_anchors);
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