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a85b5759f3
These files were pulled from the 1.6.3 release tarball. This new version builds against OpenSSL version 1.1 which will be the default in the new Debian Stable which is due to be released RealSoonNow (tm).
102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
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* iterator/iter_donotq.h - iterative resolver donotqueryaddresses storage.
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*
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* Copyright (c) 2007, 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 donotquery addresses and lookup fast.
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*/
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#ifndef ITERATOR_ITER_DONOTQ_H
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#define ITERATOR_ITER_DONOTQ_H
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#include "util/storage/dnstree.h"
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struct iter_env;
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struct config_file;
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struct regional;
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/**
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* Iterator donotqueryaddresses structure
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*/
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struct iter_donotq {
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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. Each node is an address span
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* that must not be used to send queries to.
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*/
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rbtree_type tree;
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};
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/**
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* Create donotqueryaddresses structure
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* @return new structure or NULL on error.
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*/
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struct iter_donotq* donotq_create(void);
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/**
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* Delete donotqueryaddresses structure.
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* @param donotq: to delete.
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*/
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void donotq_delete(struct iter_donotq* donotq);
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/**
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* Process donotqueryaddresses config.
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* @param donotq: 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 donotq_apply_cfg(struct iter_donotq* donotq, struct config_file* cfg);
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/**
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* See if an address is blocked.
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* @param donotq: structure for address storage.
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* @param addr: address to check
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* @param addrlen: length of addr.
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* @return: true if the address must not be queried. false if unlisted.
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*/
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int donotq_lookup(struct iter_donotq* donotq, struct sockaddr_storage* addr,
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socklen_t addrlen);
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/**
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* Get memory used by donotqueryaddresses structure.
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* @param donotq: structure for address storage.
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* @return bytes in use.
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*/
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size_t donotq_get_mem(struct iter_donotq* donotq);
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#endif /* ITERATOR_ITER_DONOTQ_H */
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