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/**
* @file ike_auth.h
*
* @brief Interface of transaction ike_auth.
*
*/
/*
* Copyright (C) 2006 Martin Willi
* Hochschule fuer Technik Rapperswil
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*/
#ifndef IKE_AUTH_H_
#define IKE_AUTH_H_
#include <sa/ike_sa.h>
#include <sa/transactions/transaction.h>
typedef struct ike_auth_t ike_auth_t;
/**
* @brief A transaction for the second message exchange to authenticate an IKE_SA.
*
* The second transaction is encrypted and authenticates the peers. It also
* sets up a first CHILD_SA.
*
* @b Constructors:
* - ike_auth_create()
* - transaction_create() with the appropriate message
*
* @ingroup transactions
*/
struct ike_auth_t {
/**
* The transaction_t interface.
*/
transaction_t transaction;
/**
* @brief Set the config used for the ike_auth exchange.
*
* The connection definition is used to complete IKE_SA setup, the
* policy defines the CHILD_SA which is created along with the ike_auth
* exchange.
*
* @param this calling object
* @param connection connection definition
* @param policy policy definition
*/
void (*set_config) (ike_auth_t* this,
connection_t *connection, policy_t *policy);
/**
* @brief Set the reqid used for CHILD_SA setup.
*
* The first two message exchanges may set up an associated
* CHILD_SA. If we acquire, we must use the same reqid as the
* installed policy.
*
* @param this calling object
* @param reqid reqid to use for the CHILD_SA
*/
void (*set_reqid) (ike_auth_t* this, u_int32_t reqid);
/**
* @brief Set the nonces used in the previous ike_sa_init transaction.
*
* The nonces are used to create the authentication data.
*
* @param this calling object
* @param nonce_i initiator chosen nonce
* @param nonce_r responder chosen nonce
*/
void (*set_nonces) (ike_auth_t* this, chunk_t nonce_i, chunk_t nonce_r);
/**
* @brief Set the messages used in the previous ike_sa_init transaction.
*
* The messages are used to create the authentication data.
*
* @param this calling object
* @param request encoded request message as a chunk
* @param response encoded response message as a chunk
*/
void (*set_init_messages) (ike_auth_t* this, chunk_t request, chunk_t response);
};
/**
* @brief Create a new transaction which processes IKE_AUTH exchanges.
*
* @param ike_sa assigned IKE_SA
* @return created ike_auth transaction
*
* @ingroup transactions
*/
ike_auth_t *ike_auth_create(ike_sa_t *ike_sa);
#endif /* IKE_AUTH_H_ */
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