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/*
* iterator/iter_priv.h - iterative resolver private address and domain store
*
* Copyright (c) 2008, NLnet Labs. All rights reserved.
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the NLNET LABS nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
*
* This file contains functions to assist the iterator module.
* Keep track of the private addresses and lookup fast.
*/
#ifndef ITERATOR_ITER_PRIV_H
#define ITERATOR_ITER_PRIV_H
#include "util/rbtree.h"
struct sldns_buffer;
struct iter_env;
struct config_file;
struct regional;
struct rrset_parse;
/**
* Iterator priv structure
*/
struct iter_priv {
/** regional for allocation */
struct regional* region;
/**
* Tree of the address spans that are blocked.
* contents of type addr_tree_node.
* No further data need, only presence or absence.
*/
rbtree_type a;
/**
* Tree of the domains spans that are allowed to contain
* the blocked address spans.
* contents of type name_tree_node.
* No further data need, only presence or absence.
*/
rbtree_type n;
};
/**
* Create priv structure
* @return new structure or NULL on error.
*/
struct iter_priv* priv_create(void);
/**
* Delete priv structure.
* @param priv: to delete.
*/
void priv_delete(struct iter_priv* priv);
/**
* Process priv config.
* @param priv: where to store.
* @param cfg: config options.
* @return 0 on error.
*/
int priv_apply_cfg(struct iter_priv* priv, struct config_file* cfg);
/**
* See if rrset is bad.
* Will remove individual RRs that are bad (if possible) to
* sanitize the RRset without removing it completely.
* @param priv: structure for private address storage.
* @param pkt: packet to decompress rrset name in.
* @param rrset: the rrset to examine, A or AAAA.
* @return true if the rrset is bad and should be removed.
*/
int priv_rrset_bad(struct iter_priv* priv, struct sldns_buffer* pkt,
struct rrset_parse* rrset);
/**
* Get memory used by priv structure.
* @param priv: structure for address storage.
* @return bytes in use.
*/
size_t priv_get_mem(struct iter_priv* priv);
#endif /* ITERATOR_ITER_PRIV_H */
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