102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/*
|
|
* iterator/iter_donotq.h - iterative resolver donotqueryaddresses storage.
|
|
*
|
|
* Copyright (c) 2007, 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 donotquery addresses and lookup fast.
|
|
*/
|
|
|
|
#ifndef ITERATOR_ITER_DONOTQ_H
|
|
#define ITERATOR_ITER_DONOTQ_H
|
|
#include "util/storage/dnstree.h"
|
|
struct iter_env;
|
|
struct config_file;
|
|
struct regional;
|
|
|
|
/**
|
|
* Iterator donotqueryaddresses structure
|
|
*/
|
|
struct iter_donotq {
|
|
/** regional for allocation */
|
|
struct regional* region;
|
|
/**
|
|
* Tree of the address spans that are blocked.
|
|
* contents of type addr_tree_node. Each node is an address span
|
|
* that must not be used to send queries to.
|
|
*/
|
|
rbtree_t tree;
|
|
};
|
|
|
|
/**
|
|
* Create donotqueryaddresses structure
|
|
* @return new structure or NULL on error.
|
|
*/
|
|
struct iter_donotq* donotq_create(void);
|
|
|
|
/**
|
|
* Delete donotqueryaddresses structure.
|
|
* @param donotq: to delete.
|
|
*/
|
|
void donotq_delete(struct iter_donotq* donotq);
|
|
|
|
/**
|
|
* Process donotqueryaddresses config.
|
|
* @param donotq: where to store.
|
|
* @param cfg: config options.
|
|
* @return 0 on error.
|
|
*/
|
|
int donotq_apply_cfg(struct iter_donotq* donotq, struct config_file* cfg);
|
|
|
|
/**
|
|
* See if an address is blocked.
|
|
* @param donotq: structure for address storage.
|
|
* @param addr: address to check
|
|
* @param addrlen: length of addr.
|
|
* @return: true if the address must not be queried. false if unlisted.
|
|
*/
|
|
int donotq_lookup(struct iter_donotq* donotq, struct sockaddr_storage* addr,
|
|
socklen_t addrlen);
|
|
|
|
/**
|
|
* Get memory used by donotqueryaddresses structure.
|
|
* @param donotq: structure for address storage.
|
|
* @return bytes in use.
|
|
*/
|
|
size_t donotq_get_mem(struct iter_donotq* donotq);
|
|
|
|
#endif /* ITERATOR_ITER_DONOTQ_H */
|