iter_delegpt.h

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/*
 * iterator/iter_delegpt.h - delegation point with NS and address information.
 *
 * 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.
 */

 
#ifndef ITERATOR_ITER_DELEGPT_H
#define ITERATOR_ITER_DELEGPT_H
#include "util/log.h"
struct regional;
struct delegpt_ns;
struct delegpt_addr;
struct dns_msg;
struct ub_packed_rrset_key;
struct msgreply_entry;

struct delegpt {
    uint8_t* name;
    size_t namelen;
    int namelabs;

    struct delegpt_ns* nslist;
    struct delegpt_addr* target_list;
    struct delegpt_addr* usable_list;
    struct delegpt_addr* result_list;

    int bogus;
    uint8_t has_parent_side_NS;
    uint8_t dp_type_mlc;
    uint8_t ssl_upstream;
    uint8_t auth_dp;
};

struct delegpt_ns {
    struct delegpt_ns* next;
    uint8_t* name;
    size_t namelen;
    int resolved;
    uint8_t got4;
    uint8_t got6;
    uint8_t lame;
    uint8_t done_pside4;
    uint8_t done_pside6;
};

struct delegpt_addr {
    struct delegpt_addr* next_result;
    struct delegpt_addr* next_usable;
    struct delegpt_addr* next_target;

    struct sockaddr_storage addr;
    socklen_t addrlen;
    int attempts;
    int sel_rtt;
    uint8_t bogus;
    uint8_t lame;
    uint8_t dnsseclame;
    char* tls_auth_name;
};

struct delegpt* delegpt_create(struct regional* regional);

struct delegpt* delegpt_copy(struct delegpt* dp, struct regional* regional);

int delegpt_set_name(struct delegpt* dp, struct regional* regional, 
    uint8_t* name);

int delegpt_add_ns(struct delegpt* dp, struct regional* regional, 
    uint8_t* name, uint8_t lame);

int delegpt_rrset_add_ns(struct delegpt* dp, struct regional* regional,
    struct ub_packed_rrset_key* ns_rrset, uint8_t lame);

int delegpt_add_target(struct delegpt* dp, struct regional* regional, 
    uint8_t* name, size_t namelen, struct sockaddr_storage* addr, 
    socklen_t addrlen, uint8_t bogus, uint8_t lame);

int delegpt_add_rrset_A(struct delegpt* dp, struct regional* regional, 
    struct ub_packed_rrset_key* rrset, uint8_t lame);

int delegpt_add_rrset_AAAA(struct delegpt* dp, struct regional* regional, 
    struct ub_packed_rrset_key* rrset, uint8_t lame);

int delegpt_add_rrset(struct delegpt* dp, struct regional* regional, 
    struct ub_packed_rrset_key* rrset, uint8_t lame);

int delegpt_add_addr(struct delegpt* dp, struct regional* regional, 
    struct sockaddr_storage* addr, socklen_t addrlen,
    uint8_t bogus, uint8_t lame, char* tls_auth_name);

struct delegpt_ns* delegpt_find_ns(struct delegpt* dp, uint8_t* name, 
    size_t namelen);

struct delegpt_addr* delegpt_find_addr(struct delegpt* dp, 
    struct sockaddr_storage* addr, socklen_t addrlen);

void delegpt_log(enum verbosity_value v, struct delegpt* dp);

void delegpt_count_ns(struct delegpt* dp, size_t* numns, size_t* missing);

void delegpt_count_addr(struct delegpt* dp, size_t* numaddr, size_t* numres, 
    size_t* numavail);

void delegpt_add_unused_targets(struct delegpt* dp);

size_t delegpt_count_missing_targets(struct delegpt* dp);

size_t delegpt_count_targets(struct delegpt* dp);

struct delegpt* delegpt_from_message(struct dns_msg* msg, 
    struct regional* regional);

void delegpt_add_neg_msg(struct delegpt* dp, struct msgreply_entry* msg);

void delegpt_no_ipv6(struct delegpt* dp);

void delegpt_no_ipv4(struct delegpt* dp);

struct delegpt* delegpt_create_mlc(uint8_t* name);

void delegpt_free_mlc(struct delegpt* dp);

int delegpt_set_name_mlc(struct delegpt* dp, uint8_t* name);

int delegpt_add_ns_mlc(struct delegpt* dp, uint8_t* name, uint8_t lame);

int delegpt_add_addr_mlc(struct delegpt* dp, struct sockaddr_storage* addr,
    socklen_t addrlen, uint8_t bogus, uint8_t lame, char* tls_auth_name);

int delegpt_add_target_mlc(struct delegpt* dp, uint8_t* name, size_t namelen,
    struct sockaddr_storage* addr, socklen_t addrlen, uint8_t bogus,
    uint8_t lame);

size_t delegpt_get_mem(struct delegpt* dp);
 
#endif /* ITERATOR_ITER_DELEGPT_H */