/*      $NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $     */
/*
* Copyright (c) 2002-2007 Niels Provos <[email protected]>
* Copyright (c) 2007-2013 Niels Provos and Nick Mathewson
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
*    derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "../util-internal.h"
#include "event2/event-config.h"
#include <sys/cdefs.h>
__RCSID("$NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $");

#ifdef _WIN32
#include <winsock2.h>
#else
#include <unistd.h>
#endif
#include <sys/types.h>
#include <sys/stat.h>
#ifdef EVENT__HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef EVENT__HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>

#include <event.h>
#include <evutil.h>

struct timeval timeout = {3, 0};

static void
closed_cb(evutil_socket_t fd, short event, void *arg)
{
       if (EV_TIMEOUT & event) {
               printf("%s: Timeout!\n", __func__);
               exit(1);
       }

       if (EV_CLOSED & event) {
               printf("%s: detected socket close with success\n", __func__);
               return;
       }

       printf("%s: unable to detect socket close\n", __func__);
       exit(1);
}

int
main(int argc, char **argv)
{
       struct event_base *base;
       struct event_config *cfg;
       struct event *ev;
       const char *test = "test string";
       evutil_socket_t pair[2];

       /* Initialize the library and check if the backend
          supports EV_FEATURE_EARLY_CLOSE
       */
       cfg = event_config_new();
       event_config_require_features(cfg, EV_FEATURE_EARLY_CLOSE);
       base = event_base_new_with_config(cfg);
       event_config_free(cfg);
       if (!base) {
               /* Backend doesn't support EV_FEATURE_EARLY_CLOSE */
               return 0;
       }

       /* Create a pair of sockets */
       if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
               return (1);

       /* Send some data on socket 0 and immediately close it */
       if (send(pair[0], test, (int)strlen(test)+1, 0) < 0)
               return (1);
       shutdown(pair[0], EVUTIL_SHUT_WR);

       /* Dispatch */
       ev = event_new(base, pair[1], EV_CLOSED | EV_TIMEOUT, closed_cb, event_self_cbarg());
       event_add(ev, &timeout);
       event_base_dispatch(base);

       /* Finalize library */
       event_free(ev);
       event_base_free(base);
       return 0;
}