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