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/*
* Copyright (C) 2013-2014 Andreas Steffen
* HSR 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 "imc_swid_state.h"
#include <tncif_names.h>
#include <utils/debug.h>
typedef struct private_imc_swid_state_t private_imc_swid_state_t;
/**
* Private data of an imc_swid_state_t object.
*/
struct private_imc_swid_state_t {
/**
* Public members of imc_swid_state_t
*/
imc_swid_state_t public;
/**
* TNCCS connection ID
*/
TNC_ConnectionID connection_id;
/**
* TNCCS connection state
*/
TNC_ConnectionState state;
/**
* Assessment/Evaluation Result
*/
TNC_IMV_Evaluation_Result result;
/**
* Does the TNCCS connection support long message types?
*/
bool has_long;
/**
* Does the TNCCS connection support exclusive delivery?
*/
bool has_excl;
/**
* Maximum PA-TNC message size for this TNCCS connection
*/
u_int32_t max_msg_len;
/**
* PA-TNC attribute segmentation contracts associated with TNCCS connection
*/
seg_contract_manager_t *contracts;
/**
* Event ID Epoch
*/
u_int32_t eid_epoch;
};
METHOD(imc_state_t, get_connection_id, TNC_ConnectionID,
private_imc_swid_state_t *this)
{
return this->connection_id;
}
METHOD(imc_state_t, has_long, bool,
private_imc_swid_state_t *this)
{
return this->has_long;
}
METHOD(imc_state_t, has_excl, bool,
private_imc_swid_state_t *this)
{
return this->has_excl;
}
METHOD(imc_state_t, set_flags, void,
private_imc_swid_state_t *this, bool has_long, bool has_excl)
{
this->has_long = has_long;
this->has_excl = has_excl;
}
METHOD(imc_state_t, set_max_msg_len, void,
private_imc_swid_state_t *this, u_int32_t max_msg_len)
{
this->max_msg_len = max_msg_len;
}
METHOD(imc_state_t, get_max_msg_len, u_int32_t,
private_imc_swid_state_t *this)
{
return this->max_msg_len;
}
METHOD(imc_state_t, get_contracts, seg_contract_manager_t*,
private_imc_swid_state_t *this)
{
return this->contracts;
}
METHOD(imc_state_t, change_state, void,
private_imc_swid_state_t *this, TNC_ConnectionState new_state)
{
this->state = new_state;
}
METHOD(imc_state_t, set_result, void,
private_imc_swid_state_t *this, TNC_IMCID id,
TNC_IMV_Evaluation_Result result)
{
this->result = result;
}
METHOD(imc_state_t, get_result, bool,
private_imc_swid_state_t *this, TNC_IMCID id,
TNC_IMV_Evaluation_Result *result)
{
if (result)
{
*result = this->result;
}
return this->result != TNC_IMV_EVALUATION_RESULT_DONT_KNOW;
}
METHOD(imc_state_t, destroy, void,
private_imc_swid_state_t *this)
{
this->contracts->destroy(this->contracts);
free(this);
}
METHOD(imc_swid_state_t, get_eid_epoch, u_int32_t,
private_imc_swid_state_t *this)
{
return this->eid_epoch;
}
/**
* Described in header.
*/
imc_state_t *imc_swid_state_create(TNC_ConnectionID connection_id)
{
private_imc_swid_state_t *this;
u_int32_t eid_epoch;
nonce_gen_t *ng;
ng = lib->crypto->create_nonce_gen(lib->crypto);
if (!ng || !ng->get_nonce(ng, 4, (u_int8_t*)&eid_epoch))
{
DBG1(DBG_TNC, "failed to generate random EID epoch value");
DESTROY_IF(ng);
return NULL;
}
ng->destroy(ng);
DBG1(DBG_IMC, "creating random EID epoch 0x%08x", eid_epoch);
INIT(this,
.public = {
.interface = {
.get_connection_id = _get_connection_id,
.has_long = _has_long,
.has_excl = _has_excl,
.set_flags = _set_flags,
.set_max_msg_len = _set_max_msg_len,
.get_max_msg_len = _get_max_msg_len,
.get_contracts = _get_contracts,
.change_state = _change_state,
.set_result = _set_result,
.get_result = _get_result,
.destroy = _destroy,
},
.get_eid_epoch = _get_eid_epoch,
},
.state = TNC_CONNECTION_STATE_CREATE,
.result = TNC_IMV_EVALUATION_RESULT_DONT_KNOW,
.connection_id = connection_id,
.contracts = seg_contract_manager_create(),
.eid_epoch = eid_epoch,
);
return &this->public.interface;
}
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