105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/**
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* @file create_child_sa.h
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*
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* @brief Interface of transaction create_child_sa.
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*
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*/
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/*
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* Copyright (C) 2006 Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#ifndef CREATE_CHILD_SA_H_
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#define CREATE_CHILD_SA_H_
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#include <sa/ike_sa.h>
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#include <sa/child_sa.h>
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#include <sa/transactions/transaction.h>
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typedef struct create_child_sa_t create_child_sa_t;
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/**
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* @brief A transaction to create a new or rekey an existing CHILD_SA.
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*
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* Rekeying of an CHILD_SA works the same way as creating a new one,
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* but includes an additional REKEY_SA notify and deletes the old
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* one (in a separate transaction).
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*
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* ¦__________ _________¦
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* ¦ Cyq \/ Czq ¦
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* ¦__________/\_________¦
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* detect ¦__________ _________¦ detect
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* ¦ Czp \/ Czp ¦
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* compare nonces, won ¦__________/\_________¦ compare nonces, lost
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* ¦ ¦
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* delete old ¦__________ ¦
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* ¦ Dxq \__________¦
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* ¦ __________¦
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* ¦__________/ Dxp ¦
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* ¦ __________¦ delete created
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* ¦__________/ Dzq ¦
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* ¦__________ ¦
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* ¦ Dzp \__________¦
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*
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*
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* @b Constructors:
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* - create_child_sa_create()
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* - transaction_create() with the appropriate message
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*
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* @ingroup transactions
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*/
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struct create_child_sa_t {
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/**
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* The transaction_t interface.
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*/
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transaction_t transaction;
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/**
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* @brief Set the CHILD_SA which gets rekeyed by the new one.
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*
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* If this transaction is used for rekeying, set the inbound
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* SPI of the CHILD_SA which the new CHILD_SA rekeys.
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*
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* @param this calling object
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* @param child_sa CHILD_SA to rekey
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*/
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void (*rekeys_child) (create_child_sa_t* this, child_sa_t *child_sa);
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/**
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* @brief Cancel a rekeying request.
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*
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* Cancelling a rekeying request will set a flag in the transaction. When
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* the response for the transaction is received, the created CHILD_SA
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* gets deleted afterwards.
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*
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* @param this calling object
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* @param child_sa CHILD_SA to rekey
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*/
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void (*cancel) (create_child_sa_t* this);
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};
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/**
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* @brief Create a new transaction which creates/rekeys CHILD_SAs.
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*
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* @param ike_sa assigned IKE_SA
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* @return created create_child_sa transaction
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*
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* @ingroup transactions
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*/
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create_child_sa_t *create_child_sa_create(ike_sa_t *ike_sa);
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#endif /* CREATE_CHILD_SA_H_ */
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