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/*
* Copyright (C) 2011 Martin Willi
* Copyright (C) 2011 revosec AG
*
* 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 "isakmp_dpd.h"
#include <daemon.h>
#include <encoding/payloads/notify_payload.h>
typedef struct private_isakmp_dpd_t private_isakmp_dpd_t;
/**
* Private members of a isakmp_dpd_t task.
*/
struct private_isakmp_dpd_t {
/**
* Public methods and task_t interface.
*/
isakmp_dpd_t public;
/**
* Sequence number.
*/
u_int32_t seqnr;
/**
* DPD notify type
*/
notify_type_t type;
/**
* IKE SA we are serving.
*/
ike_sa_t *ike_sa;
};
METHOD(task_t, build, status_t,
private_isakmp_dpd_t *this, message_t *message)
{
notify_payload_t *notify;
ike_sa_id_t *ike_sa_id;
u_int64_t spi_i, spi_r;
u_int32_t seqnr;
chunk_t spi;
notify = notify_payload_create_from_protocol_and_type(NOTIFY_V1,
PROTO_IKE, this->type);
seqnr = htonl(this->seqnr);
ike_sa_id = this->ike_sa->get_id(this->ike_sa);
spi_i = ike_sa_id->get_initiator_spi(ike_sa_id);
spi_r = ike_sa_id->get_responder_spi(ike_sa_id);
spi = chunk_cata("cc", chunk_from_thing(spi_i), chunk_from_thing(spi_r));
notify->set_spi_data(notify, spi);
notify->set_notification_data(notify, chunk_from_thing(seqnr));
message->add_payload(message, (payload_t*)notify);
return SUCCESS;
}
METHOD(task_t, process, status_t,
private_isakmp_dpd_t *this, message_t *message)
{
/* done in task manager */
return FAILED;
}
METHOD(task_t, get_type, task_type_t,
private_isakmp_dpd_t *this)
{
return TASK_ISAKMP_DPD;
}
METHOD(task_t, migrate, void,
private_isakmp_dpd_t *this, ike_sa_t *ike_sa)
{
this->ike_sa = ike_sa;
}
METHOD(task_t, destroy, void,
private_isakmp_dpd_t *this)
{
free(this);
}
/*
* Described in header.
*/
isakmp_dpd_t *isakmp_dpd_create(ike_sa_t *ike_sa, notify_type_t type,
u_int32_t seqnr)
{
private_isakmp_dpd_t *this;
INIT(this,
.public = {
.task = {
.get_type = _get_type,
.build = _build,
.process = _process,
.migrate = _migrate,
.destroy = _destroy,
},
},
.ike_sa = ike_sa,
.seqnr = seqnr,
.type = type,
);
return &this->public;
}
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