val_nsec.h

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/*
 * validator/val_nsec.h - validator NSEC denial of existence functions.
 *
 * 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 VALIDATOR_VAL_NSEC_H
#define VALIDATOR_VAL_NSEC_H
#include "util/data/packed_rrset.h"
struct val_env;
struct module_env;
struct module_qstate;
struct ub_packed_rrset_key;
struct reply_info;
struct query_info;
struct key_entry_key;

enum sec_status val_nsec_prove_nodata_dsreply(struct module_env* env,
    struct val_env* ve, struct query_info* qinfo, 
    struct reply_info* rep, struct key_entry_key* kkey,
    time_t* proof_ttl, char** reason, struct module_qstate* qstate);

int nsecbitmap_has_type_rdata(uint8_t* bitmap, size_t len, uint16_t type);

int nsec_has_type(struct ub_packed_rrset_key* nsec, uint16_t type);

int nsec_proves_nodata(struct ub_packed_rrset_key* nsec, 
    struct query_info* qinfo, uint8_t** wc);

int val_nsec_proves_name_error(struct ub_packed_rrset_key* nsec, 
    uint8_t* qname);

int val_nsec_proves_positive_wildcard(struct ub_packed_rrset_key* nsec, 
    struct query_info* qinf, uint8_t* wc);

uint8_t* nsec_closest_encloser(uint8_t* qname, 
    struct ub_packed_rrset_key* nsec);

int val_nsec_proves_no_wc(struct ub_packed_rrset_key* nsec, uint8_t* qname, 
    size_t qnamelen);

int val_nsec_check_dlv(struct query_info* qinfo,
    struct reply_info* rep, uint8_t** nm, size_t* nm_len);

int val_nsec_proves_insecuredelegation(struct ub_packed_rrset_key* nsec,
        struct query_info* qinfo);
 
#endif /* VALIDATOR_VAL_NSEC_H */