151 lines
3.2 KiB
C
151 lines
3.2 KiB
C
/*
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* Copyright (C) 2015 Tobias Brunner
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* HSR 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_redirect.h"
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#include <daemon.h>
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#include <processing/jobs/delete_ike_sa_job.h>
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typedef struct private_ike_redirect_t private_ike_redirect_t;
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/**
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* Private members
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*/
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struct private_ike_redirect_t {
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/**
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* Public interface
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*/
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ike_redirect_t public;
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/**
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* Assigned IKE_SA
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*/
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ike_sa_t *ike_sa;
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/**
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* Gateway ID to redirect to
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*/
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identification_t *gateway;
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};
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METHOD(task_t, build_i, status_t,
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private_ike_redirect_t *this, message_t *message)
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{
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chunk_t data;
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DBG1(DBG_IKE, "redirecting peer to %Y", this->gateway);
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data = redirect_data_create(this->gateway, chunk_empty);
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message->add_notify(message, FALSE, REDIRECT, data);
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chunk_free(&data);
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this->ike_sa->set_condition(this->ike_sa, COND_REDIRECTED, TRUE);
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return NEED_MORE;
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}
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METHOD(task_t, process_r, status_t,
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private_ike_redirect_t *this, message_t *message)
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{
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notify_payload_t *notify;
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identification_t *to;
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notify = message->get_notify(message, REDIRECT);
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if (!notify)
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{
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return SUCCESS;
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}
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to = redirect_data_parse(notify->get_notification_data(notify), NULL);
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if (!to)
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{
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DBG1(DBG_IKE, "received invalid REDIRECT notify");
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}
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else
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{
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this->ike_sa->handle_redirect(this->ike_sa, to);
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to->destroy(to);
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}
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return SUCCESS;
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}
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METHOD(task_t, build_r, status_t,
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private_ike_redirect_t *this, message_t *message)
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{
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/* not called because SUCCESS is returned above */
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return SUCCESS;
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}
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METHOD(task_t, process_i, status_t,
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private_ike_redirect_t *this, message_t *message)
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{
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delete_ike_sa_job_t *job;
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/* if the peer does not delete the SA we do so after a while */
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job = delete_ike_sa_job_create(this->ike_sa->get_id(this->ike_sa), TRUE);
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lib->scheduler->schedule_job(lib->scheduler, (job_t*)job,
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lib->settings->get_int(lib->settings,
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"%s.half_open_timeout", HALF_OPEN_IKE_SA_TIMEOUT,
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lib->ns));
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return SUCCESS;
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}
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METHOD(task_t, get_type, task_type_t,
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private_ike_redirect_t *this)
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{
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return TASK_IKE_REDIRECT;
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}
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METHOD(task_t, migrate, void,
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private_ike_redirect_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, destroy, void,
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private_ike_redirect_t *this)
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{
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DESTROY_IF(this->gateway);
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free(this);
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}
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/*
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* Described in header.
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*/
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ike_redirect_t *ike_redirect_create(ike_sa_t *ike_sa, identification_t *to)
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{
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private_ike_redirect_t *this;
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INIT(this,
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.public = {
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.task = {
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.get_type = _get_type,
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.build = _build_r,
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.process = _process_r,
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.migrate = _migrate,
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.destroy = _destroy,
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},
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},
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.ike_sa = ike_sa,
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);
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if (to)
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{
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this->gateway = to->clone(to);
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this->public.task.build = _build_i;
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this->public.task.process = _process_i;
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}
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return &this->public;
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}
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