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81 lines
3.1 KiB
C
81 lines
3.1 KiB
C
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/*
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* validator/val_nsec.h - validator NSEC denial of existance functions.
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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 LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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 helper functions for the validator module.
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* The functions help with NSEC checking, the different NSEC proofs
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* for denial of existance, and proofs for presence of types.
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*/
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#ifndef VALIDATOR_VAL_NSEC_H
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#define VALIDATOR_VAL_NSEC_H
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struct val_env;
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struct module_env;
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struct ub_packed_rrset_key;
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enum sec_status;
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struct reply_info;
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struct query_info;
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struct key_entry_key;
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/**
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* Check DS absence.
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* There is a NODATA reply to a DS that needs checking.
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* NSECs can prove this is not a delegation point, or sucessfully prove
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* that there is no DS. Or this fails.
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*
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* @param env: module env for rrsig verification routines.
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* @param ve: validator env for rrsig verification routines.
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* @param qinfo: the DS queried for.
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* @param rep: reply received.
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* @param kkey: key entry to use for verification of signatures.
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* @param proof_ttl: if secure, the TTL of how long this proof lasts.
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* @return security status.
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* SECURE: proved absence of DS.
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* INSECURE: proved that this was not a delegation point.
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* BOGUS: crypto bad, or no absence of DS proven.
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* UNCHECKED: there was no way to prove anything (no nsecs, unknown algo).
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*/
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enum sec_status val_nsec_prove_nodata_ds(struct module_env* env,
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struct val_env* ve, struct query_info* qinfo,
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struct reply_info* rep, struct key_entry_key* kkey,
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uint32_t* proof_ttl);
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/** Unit test call to test function for nsec typemap check */
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int unitest_nsec_has_type_rdata(char* bitmap, size_t len, uint16_t type);
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#endif /* VALIDATOR_VAL_NSEC_H */
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