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/* $OpenBSD: timer.c,v 1.4 2011/01/26 17:07:59 reyk Exp $ */
/*
* Copyright (c) 2010 Reyk Floeter <reyk@vantronix.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/uio.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <ctype.h>
#include <event.h>
#include "iked.h"
struct timer_cbarg {
int tmr_active;
struct event tmr_ev;
struct iked *tmr_env;
struct timeval tmr_first;
struct timeval tmr_last;
struct timeval tmr_tv;
int (*tmr_initcb)(struct iked *, struct iked_policy *);
} timer_initiator;
void timer_initiator_cb(int, short, void *);
#define IKED_TIMER_INITIATOR_INITIAL 2
#define IKED_TIMER_INITIATOR_INTERVAL 60
void
timer_register_initiator(struct iked *env,
int (*cb)(struct iked *, struct iked_policy *))
{
struct timer_cbarg *tmr;
timer_unregister_initiator(env);
if (env->sc_passive)
return;
tmr = &timer_initiator;
gettimeofday(&tmr->tmr_first, NULL);
gettimeofday(&tmr->tmr_last, NULL);
tmr->tmr_env = env;
tmr->tmr_initcb = cb;
tmr->tmr_active = 1;
evtimer_set(&tmr->tmr_ev, timer_initiator_cb, tmr);
tmr->tmr_tv.tv_sec = IKED_TIMER_INITIATOR_INITIAL;
tmr->tmr_tv.tv_usec = 0;
evtimer_add(&tmr->tmr_ev, &tmr->tmr_tv);
}
void
timer_unregister_initiator(struct iked *env)
{
struct timer_cbarg *tmr;
tmr = &timer_initiator;
if (!tmr->tmr_active)
return;
event_del(&tmr->tmr_ev);
bzero(tmr, sizeof(*tmr));
}
void
timer_initiator_cb(int fd, short event, void *arg)
{
struct timer_cbarg *tmr = arg;
struct iked *env = tmr->tmr_env;
struct iked_policy *pol;
gettimeofday(&tmr->tmr_last, NULL);
TAILQ_FOREACH(pol, &env->sc_policies, pol_entry) {
if ((pol->pol_flags & IKED_POLICY_ACTIVE) == 0)
continue;
if (sa_peer_lookup(pol, &pol->pol_peer.addr) != NULL) {
log_debug("%s: \"%s\" is already active",
__func__, pol->pol_name);
continue;
}
log_debug("%s: initiating \"%s\"", __func__, pol->pol_name);
if (tmr->tmr_initcb != NULL) {
/* Ignore error but what should we do on failure? */
(void)tmr->tmr_initcb(env, pol);
}
}
tmr->tmr_tv.tv_sec = IKED_TIMER_INITIATOR_INTERVAL;
tmr->tmr_tv.tv_usec = 0;
evtimer_add(&tmr->tmr_ev, &tmr->tmr_tv);
}
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