unbound/ipsecmod/ipsecmod.h
Wouter Wijngaards a40e8ae321 commentfix.
git-svn-id: file:///svn/unbound/trunk@4170 be551aaa-1e26-0410-a405-d3ace91eadb9
2017-05-17 13:26:26 +00:00

98 lines
3.7 KiB
C

/*
* ipsecmod/ipsecmod.h - facilitate opportunistic IPsec module
*
* Copyright (c) 2017, 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 a module that facilitates opportunistic IPsec. It does so
* by also quering for the IPSECKEY for A/AAAA queries and calling a
* configurable hook (eg. signaling an IKE daemon) before replying.
*/
#ifndef IPSECMOD_H
#define IPSECMOD_H
#include "util/module.h"
#include "util/rbtree.h"
/**
* The global variable environment contents for the ipsecmod
* Shared between threads, this represents long term information.
*/
struct ipsecmod_env {
/** White listed domains for ipsecmod. */
rbtree_type* whitelist;
};
/**
* Per query state for the ipsecmod module.
*/
struct ipsecmod_qstate {
/** State of the IPsec module. */
/** NOTE: This value is copied here from the configuration so that a change
* with unbound-control would not complicate an already running mesh. */
int enabled;
/** If the qname is whitelisted or not. */
/** NOTE: No whitelist means all qnames are whitelisted. */
int is_whitelisted;
/** Pointer to IPSECKEY rrset allocated in the qstate region. NULL if there
* was no IPSECKEY reply from the subquery. */
struct ub_packed_rrset_key* ipseckey_rrset;
/** If the IPSECKEY subquery has finished. */
int ipseckey_done;
};
/** Init the ipsecmod module */
int ipsecmod_init(struct module_env* env, int id);
/** Deinit the ipsecmod module */
void ipsecmod_deinit(struct module_env* env, int id);
/** Operate on an event on a query (in qstate). */
void ipsecmod_operate(struct module_qstate* qstate, enum module_ev event,
int id, struct outbound_entry* outbound);
/** Subordinate query done, inform this super request of its conclusion */
void ipsecmod_inform_super(struct module_qstate* qstate, int id,
struct module_qstate* super);
/** clear the ipsecmod query-specific contents out of qstate */
void ipsecmod_clear(struct module_qstate* qstate, int id);
/** return memory estimate for the ipsecmod module */
size_t ipsecmod_get_mem(struct module_env* env, int id);
/**
* Get the function block with pointers to the ipsecmod functions
* @return the function block for "ipsecmod".
*/
struct module_func_block* ipsecmod_get_funcblock(void);
#endif /* IPSECMOD_H */