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/**
* @file create_child_sa.h
*
* @brief Interface of transaction create_child_sa.
*
*/
/*
* 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 CREATE_CHILD_SA_H_
#define CREATE_CHILD_SA_H_
#include <sa/ike_sa.h>
#include <sa/child_sa.h>
#include <sa/transactions/transaction.h>
typedef struct create_child_sa_t create_child_sa_t;
/**
* @brief A transaction to create a new or rekey an existing CHILD_SA.
*
* If the CHILD_SA is intended to create a new CHILD_SA, set the policy
* with set_policy(). If it is intended to rekey an existing CHILD_SA,
* set the appropriate CHILD_SA with rekeys_child().
*
* Rekeying of an CHILD_SA works the same way as creating a new one,
* but includes an additional REKEY_SA notify and deletes the old
* one (in a separate transaction).
*
* __________ _________
* Cyq \/ Czq
* __________/\_________
* detect __________ _________ detect
* Czp \/ Czp
* compare nonces, won __________/\_________ compare nonces, lost
*
* delete old __________
* Dxq \__________
* __________
* __________/ Dxp
* __________ delete created
* __________/ Dzq
* __________
* Dzp \__________
*
*
* @b Constructors:
* - create_child_sa_create()
* - transaction_create() with the appropriate message
*
* @ingroup transactions
*/
struct create_child_sa_t {
/**
* The transaction_t interface.
*/
transaction_t transaction;
/**
* @brief Set the policy to use for creating a new CHILD_SA.
*
* @param this calling object
* @param policy policy for CHILD_SA
*/
void (*set_policy) (create_child_sa_t* this, policy_t *policy);
/**
* @brief Set the reqid used for CHILD_SA setup.
*
* 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) (create_child_sa_t* this, u_int32_t reqid);
/**
* @brief Set the CHILD_SA which gets rekeyed by the new one.
*
* @param this calling object
* @param child_sa CHILD_SA to rekey
*/
void (*rekeys_child) (create_child_sa_t* this, child_sa_t *child_sa);
/**
* @brief Cancel the request.
*
* Cancelling the request will set a flag in the transaction. When
* the response for the transaction is received, the created CHILD_SA
* gets deleted afterwards.
*
* @param this calling object
* @param child_sa CHILD_SA to rekey
*/
void (*cancel) (create_child_sa_t* this);
};
/**
* @brief Create a new transaction which creates/rekeys CHILD_SAs.
*
* @param ike_sa assigned IKE_SA
* @return created create_child_sa transaction
*
* @ingroup transactions
*/
create_child_sa_t *create_child_sa_create(ike_sa_t *ike_sa);
#endif /* CREATE_CHILD_SA_H_ */
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