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/*
* Copyright (C) 2009 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_vendor.h"
#include <daemon.h>
#include <encoding/payloads/vendor_id_payload.h>
typedef struct private_ike_vendor_t private_ike_vendor_t;
/**
* Private data of an ike_vendor_t object.
*/
struct private_ike_vendor_t {
/**
* Public ike_vendor_t interface.
*/
ike_vendor_t public;
/**
* Associated IKE_SA
*/
ike_sa_t *ike_sa;
/**
* Are we the inititator of this task
*/
bool initiator;
};
/**
* strongSwan specific vendor ID without version, MD5("strongSwan")
*/
static chunk_t strongswan_vid = chunk_from_chars(
0x88,0x2f,0xe5,0x6d,0x6f,0xd2,0x0d,0xbc,
0x22,0x51,0x61,0x3b,0x2e,0xbe,0x5b,0xeb
);
METHOD(task_t, build, status_t,
private_ike_vendor_t *this, message_t *message)
{
if (lib->settings->get_bool(lib->settings,
"charon.send_vendor_id", FALSE))
{
vendor_id_payload_t *vid;
vid = vendor_id_payload_create_data(chunk_clone(strongswan_vid));
message->add_payload(message, &vid->payload_interface);
}
return this->initiator ? NEED_MORE : SUCCESS;
}
METHOD(task_t, process, status_t,
private_ike_vendor_t *this, message_t *message)
{
enumerator_t *enumerator;
payload_t *payload;
enumerator = message->create_payload_enumerator(message);
while (enumerator->enumerate(enumerator, &payload))
{
if (payload->get_type(payload) == VENDOR_ID)
{
vendor_id_payload_t *vid;
chunk_t data;
vid = (vendor_id_payload_t*)payload;
data = vid->get_data(vid);
if (chunk_equals(data, strongswan_vid))
{
DBG1(DBG_IKE, "received strongSwan vendor id");
this->ike_sa->enable_extension(this->ike_sa, EXT_STRONGSWAN);
}
else
{
DBG1(DBG_ENC, "received unknown vendor id: %#B", &data);
}
}
}
enumerator->destroy(enumerator);
return this->initiator ? SUCCESS : NEED_MORE;
}
METHOD(task_t, migrate, void,
private_ike_vendor_t *this, ike_sa_t *ike_sa)
{
this->ike_sa = ike_sa;
}
METHOD(task_t, get_type, task_type_t,
private_ike_vendor_t *this)
{
return IKE_VENDOR;
}
METHOD(task_t, destroy, void,
private_ike_vendor_t *this)
{
free(this);
}
/**
* See header
*/
ike_vendor_t *ike_vendor_create(ike_sa_t *ike_sa, bool initiator)
{
private_ike_vendor_t *this;
INIT(this,
.public = {
.task = {
.build = _build,
.process = _process,
.migrate = _migrate,
.get_type = _get_type,
.destroy = _destroy,
},
},
.initiator = initiator,
.ike_sa = ike_sa,
);
return &this->public;
}
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