184 lines
3.8 KiB
C
184 lines
3.8 KiB
C
/**
|
|
* @file ike_sa.c
|
|
*
|
|
* @brief Class ike_sa_t. An object of this type is managed by an
|
|
* ike_sa_manager_t object and represents an IKE_SA
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Copyright (C) 2005 Jan Hutter, 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.
|
|
*/
|
|
|
|
#include "ike_sa.h"
|
|
|
|
#include "types.h"
|
|
#include "utils/allocator.h"
|
|
#include "utils/linked_list.h"
|
|
|
|
|
|
/**
|
|
* States in which a IKE_SA can actually be
|
|
*/
|
|
typedef enum ike_sa_state_e ike_sa_state_t;
|
|
|
|
enum ike_sa_state_e{
|
|
|
|
/**
|
|
* IKE_SA is is not in a state
|
|
*/
|
|
NO_STATE,
|
|
|
|
/**
|
|
* A IKE_SA_INIT-message was sent: role initiator
|
|
*/
|
|
IKE_SA_INIT_REQUESTED,
|
|
|
|
/**
|
|
* A IKE_SA_INIT-message was replied: role responder
|
|
*/
|
|
IKE_SA_INIT_RESPONDED,
|
|
|
|
/**
|
|
* An IKE_AUTH-message was sent after a successful
|
|
* IKE_SA_INIT-exchange: role initiator
|
|
*/
|
|
IKE_AUTH_REQUESTED,
|
|
|
|
/**
|
|
* An IKE_AUTH-message was replied: role responder.
|
|
* In this state, all the informations for an IKE_SA
|
|
* and one CHILD_SA are known.
|
|
*/
|
|
IKE_SA_INITIALIZED
|
|
};
|
|
|
|
|
|
/**
|
|
* Private data of an message_t object
|
|
*/
|
|
typedef struct private_ike_sa_s private_ike_sa_t;
|
|
|
|
struct private_ike_sa_s {
|
|
|
|
/**
|
|
* Public part of a ike_sa_t object
|
|
*/
|
|
ike_sa_t public;
|
|
|
|
|
|
/* Private values */
|
|
/**
|
|
* Identifier for the current IKE_SA
|
|
*/
|
|
ike_sa_id_t *ike_sa_id;
|
|
|
|
/**
|
|
* Linked List containing the child sa's of the current IKE_SA
|
|
*/
|
|
linked_list_t *child_sas;
|
|
|
|
/**
|
|
* Current state of the IKE_SA
|
|
*/
|
|
ike_sa_state_t current_state;
|
|
};
|
|
|
|
/**
|
|
* @brief implements function process_message of private_ike_sa_t
|
|
*/
|
|
static status_t process_message (private_ike_sa_t *this, message_t *message)
|
|
{
|
|
/* @TODO Add Message Processing here */
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* @brief implements function process_configuration of private_ike_sa_t
|
|
*/
|
|
static status_t process_configuration (private_ike_sa_t *this,configuration_t *configuration)
|
|
{
|
|
/*
|
|
* @TODO Add configuration processing here
|
|
*/
|
|
return SUCCESS;
|
|
}
|
|
|
|
/**
|
|
* @brief implements function private_ike_sa_t.get_id
|
|
*/
|
|
static ike_sa_id_t* get_id(private_ike_sa_t *this)
|
|
{
|
|
return this->ike_sa_id;
|
|
}
|
|
|
|
/**
|
|
* @brief implements function destroy of private_ike_sa_t
|
|
*/
|
|
static status_t destroy (private_ike_sa_t *this)
|
|
{
|
|
if (this == NULL)
|
|
{
|
|
return FAILED;
|
|
}
|
|
|
|
this->ike_sa_id->destroy(this->ike_sa_id);
|
|
|
|
this->child_sas->destroy(this->child_sas);
|
|
|
|
allocator_free(this);
|
|
|
|
return SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* Described in Header
|
|
*/
|
|
ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
|
|
{
|
|
private_ike_sa_t *this = allocator_alloc_thing(private_ike_sa_t);
|
|
if (this == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/* Public functions */
|
|
this->public.process_message = (status_t(*)(ike_sa_t*, message_t*)) process_message;
|
|
this->public.process_configuration = (status_t(*)(ike_sa_t*, configuration_t*)) process_configuration;
|
|
this->public.get_id = (ike_sa_id_t*(*)(ike_sa_t*)) get_id;
|
|
this->public.destroy = (status_t(*)(ike_sa_t*))destroy;
|
|
|
|
|
|
/* initialize private fields */
|
|
if (ike_sa_id->clone(ike_sa_id,&(this->ike_sa_id)) != SUCCESS)
|
|
{
|
|
allocator_free(this);
|
|
return NULL;
|
|
}
|
|
|
|
this->child_sas = linked_list_create();
|
|
if (this->child_sas == NULL)
|
|
{
|
|
this->ike_sa_id->destroy(this->ike_sa_id);
|
|
allocator_free(this);
|
|
return NULL;
|
|
}
|
|
|
|
/* at creation time, IKE_SA isn't in a specific state */
|
|
this->current_state = NO_STATE;
|
|
|
|
return (&this->public);
|
|
}
|