127 lines
2.9 KiB
C
127 lines
2.9 KiB
C
/*
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* Copyright (C) 2012 Martin Willi
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* Copyright (C) 2012 revosec AG
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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 <stdlib.h>
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#include "dpd_timeout_job.h"
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#include <sa/ike_sa.h>
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#include <daemon.h>
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typedef struct private_dpd_timeout_job_t private_dpd_timeout_job_t;
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/**
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* Private data
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*/
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struct private_dpd_timeout_job_t {
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/**
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* public dpd_timeout_job_t interface
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*/
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dpd_timeout_job_t public;
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/**
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* IKE_SA identifier
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*/
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ike_sa_id_t *ike_sa_id;
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/**
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* Timestamp of first DPD check
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*/
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time_t check;
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};
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METHOD(job_t, destroy, void,
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private_dpd_timeout_job_t *this)
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{
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this->ike_sa_id->destroy(this->ike_sa_id);
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free(this);
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}
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METHOD(job_t, execute, job_requeue_t,
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private_dpd_timeout_job_t *this)
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{
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time_t use_time, current;
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enumerator_t *enumerator;
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child_sa_t *child_sa;
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ike_sa_t *ike_sa;
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ike_sa = charon->ike_sa_manager->checkout(charon->ike_sa_manager,
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this->ike_sa_id);
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if (ike_sa)
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{
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if (ike_sa->get_state(ike_sa) == IKE_PASSIVE)
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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return JOB_REQUEUE_NONE;
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}
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use_time = ike_sa->get_statistic(ike_sa, STAT_INBOUND);
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enumerator = ike_sa->create_child_sa_enumerator(ike_sa);
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while (enumerator->enumerate(enumerator, &child_sa))
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{
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child_sa->get_usestats(child_sa, TRUE, ¤t, NULL, NULL);
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use_time = max(use_time, current);
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}
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enumerator->destroy(enumerator);
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/* check if no incoming packet during timeout, reestablish SA */
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if (use_time < this->check)
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{
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DBG1(DBG_JOB, "DPD check timed out, enforcing DPD action");
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charon->bus->alert(charon->bus, ALERT_RETRANSMIT_SEND_TIMEOUT, NULL);
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charon->bus->ike_updown(charon->bus, ike_sa, FALSE);
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ike_sa->reestablish(ike_sa);
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charon->ike_sa_manager->checkin_and_destroy(charon->ike_sa_manager,
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ike_sa);
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}
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else
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{
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charon->ike_sa_manager->checkin(charon->ike_sa_manager, ike_sa);
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}
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}
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return JOB_REQUEUE_NONE;
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}
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METHOD(job_t, get_priority, job_priority_t,
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private_dpd_timeout_job_t *this)
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{
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return JOB_PRIO_HIGH;
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}
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/*
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* Described in header
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*/
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dpd_timeout_job_t *dpd_timeout_job_create(ike_sa_id_t *ike_sa_id)
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{
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private_dpd_timeout_job_t *this;
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INIT(this,
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.public = {
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.job_interface = {
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.execute = _execute,
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.get_priority = _get_priority,
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.destroy = _destroy,
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},
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},
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.ike_sa_id = ike_sa_id->clone(ike_sa_id),
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.check = time_monotonic(NULL),
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);
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return &this->public;
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}
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