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