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/* Copyright (C) 2019 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/>.
*/
#pragma once
#include "contrib/qp-trie/trie.h"
#include "knot/zone/contents.h"
#include "knot/dnssec/zone-nsec.h"
typedef trie_t additionals_tree_t;
inline static additionals_tree_t *additionals_tree_new(void) { return trie_create(NULL); }
void additionals_tree_free(additionals_tree_t *a_t);
/*!
* \brief Foreach additional in all node RRSets, do sth.
*
* \note This is not too related to additionals_tree, might be moved.
*
* \param node Zone node with possibly NS, MX, etc rrsets.
* \param zone_apex Name of the zone apex.
* \param cb Callback to be performed.
* \param ctx Arbitrary context for the callback.
*
* \return KNOT_E*
*/
typedef int (*zone_node_additionals_cb_t)(const knot_dname_t *additional, void *ctx);
int zone_node_additionals_foreach(const zone_node_t *node, const knot_dname_t *zone_apex,
zone_node_additionals_cb_t cb, void *ctx);
/*!
* \brief Update additionals tree according to changed RRsets in a zone node.
*
* \param a_t Additionals tree to be updated.
* \param zone_apex Zone apex owner.
* \param old_node Old state of the node (additionals will be removed).
* \param new_node New state of the node (additionals will be added).
*
* \return KNOT_E*
*/
int additionals_tree_update_node(additionals_tree_t *a_t, const knot_dname_t *zone_apex,
zone_node_t *old_node, zone_node_t *new_node);
/*!
* \brief Update additionals tree with NSEC3 according to changed normal nodes.
*
* \param a_t Additionals tree to be updated.
* \param zone Zone contents with NSEC3PARAMS etc.
* \param old_node Old state of the node.
* \param new_node New state of the node.
*
* \return KNOT_E*
*/
int additionals_tree_update_nsec3(additionals_tree_t *a_t, const zone_contents_t *zone,
zone_node_t *old_node, zone_node_t *new_node);
/*!
* \brief Create additionals tree from a zone (by scanning all additionals in zone RRsets).
*
* \param a_t Out: additionals tree to be created (NULL if error).
* \param zone Zone contents.
*
* \return KNOT_E*
*/
int additionals_tree_from_zone(additionals_tree_t **a_t, const zone_contents_t *zone);
/*!
* \brief Update additionals tree according to changed RRsets in all nodes in a zone tree.
*
* \param a_t Additionals tree to be updated.
* \param tree Zone tree containing updated nodes as bi-nodes.
* \param zone Whole zone with some additional info.
*
* \return KNOT_E*
*/
int additionals_tree_update_from_binodes(additionals_tree_t *a_t, const zone_tree_t *tree,
const zone_contents_t *zone);
/*!
* \brief Foreach node that has specified name in its additionals, do sth.
*
* \note The node passed to the callback might not be correct part of bi-node!
*
* \param a_t Additionals reverse tree.
* \param name Name to be looked up in the additionals.
* \param cb Callback to be called.
* \param ctx Arbitrary context for the callback.
*
* \return KNOT_E*
*/
typedef int (*node_apply_cb_t)(zone_node_t *node, void *ctx);
int additionals_reverse_apply(additionals_tree_t *a_t, const knot_dname_t *name,
node_apply_cb_t cb, void *ctx);
/*!
* \brief Call additionals_reverse_apply() for every name in specified tree.
*
* \param a_t Additionals reverse tree.
* \param tree Zone tree with names to be looked up in additionals.
* \param cb Callback to be called for each affected node.
* \param ctx Arbitrary context for the callback.
*
* \return KNOT_E*
*/
int additionals_reverse_apply_multi(additionals_tree_t *a_t, const zone_tree_t *tree,
node_apply_cb_t cb, void *ctx);
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