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/* $OpenBSD$ */
/*
* Copyright (c) 2012 Eric Faurot <eric@openbsd.org>
*
* 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 "includes.h"
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
#include <asr.h>
#include <event.h>
#include <stdlib.h>
struct event_asr {
struct event ev;
struct asr_query *async;
void (*cb)(struct asr_result *, void *);
void *arg;
};
struct event_asr * event_asr_run(struct asr_query *,
void (*)(struct asr_result *, void *), void *);
void event_asr_abort(struct event_asr *);
static void
event_asr_dispatch(int fd __attribute__((__unused__)),
short ev __attribute__((__unused__)), void *arg)
{
struct event_asr *eva = arg;
struct asr_result ar;
struct timeval tv;
event_del(&eva->ev);
if (asr_run(eva->async, &ar)) {
eva->cb(&ar, eva->arg);
free(eva);
} else {
event_set(&eva->ev, ar.ar_fd,
ar.ar_cond == ASR_WANT_READ ? EV_READ : EV_WRITE,
event_asr_dispatch, eva);
tv.tv_sec = ar.ar_timeout / 1000;
tv.tv_usec = (ar.ar_timeout % 1000) * 1000;
event_add(&eva->ev, &tv);
}
}
struct event_asr *
event_asr_run(struct asr_query *async, void (*cb)(struct asr_result *, void *),
void *arg)
{
struct event_asr *eva;
struct timeval tv;
eva = calloc(1, sizeof *eva);
if (eva == NULL)
return (NULL);
eva->async = async;
eva->cb = cb;
eva->arg = arg;
tv.tv_sec = 0;
tv.tv_usec = 0;
evtimer_set(&eva->ev, event_asr_dispatch, eva);
evtimer_add(&eva->ev, &tv);
return (eva);
}
void
event_asr_abort(struct event_asr *eva)
{
asr_abort(eva->async);
event_del(&eva->ev);
free(eva);
}
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