subnet-whitelist.h

Go to the documentation of this file.

/*
 * edns-subnet/subnet-whitelist.h - Hosts we actively try to send subnet option
 * to.
 *
 * Copyright (c) 2013, 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.
 */
 
#ifndef EDNSSUBNET_WHITELIST_H
#define EDNSSUBNET_WHITELIST_H
#include "util/storage/dnstree.h"
 
struct config_file;
struct regional;

struct ecs_whitelist {
    struct regional* region;
    rbtree_type upstream;
    rbtree_type dname;
};

struct ecs_whitelist* ecs_whitelist_create(void);

void ecs_whitelist_delete(struct ecs_whitelist* whitelist);

int ecs_whitelist_apply_cfg(struct ecs_whitelist* whitelist,
    struct config_file* cfg);

int ecs_is_whitelisted(struct ecs_whitelist* whitelist,
    struct sockaddr_storage* addr, socklen_t addrlen, uint8_t* qname,
    size_t qname_len, uint16_t qclass);

size_t ecs_whitelist_get_mem(struct ecs_whitelist* whitelist);
 
#endif /* EDNSSUBNET_WHITELIST_H */