1/*	$NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $	*/
2/*
3 * Copyright (c) 2002-2007 Niels Provos <provos@citi.umich.edu>
4 * Copyright (c) 2007-2013 Niels Provos and Nick Mathewson
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 *    notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28#include "../util-internal.h"
29#include "event2/event-config.h"
30#include <sys/cdefs.h>
31__RCSID("$NetBSD: test-closed.c,v 1.1.1.2 2021/04/07 02:43:15 christos Exp $");
32
33#ifdef _WIN32
34#include <winsock2.h>
35#else
36#include <unistd.h>
37#endif
38#include <sys/types.h>
39#include <sys/stat.h>
40#ifdef EVENT__HAVE_SYS_TIME_H
41#include <sys/time.h>
42#endif
43#ifdef EVENT__HAVE_SYS_SOCKET_H
44#include <sys/socket.h>
45#endif
46#include <fcntl.h>
47#include <stdlib.h>
48#include <stdio.h>
49#include <string.h>
50#include <errno.h>
51
52#include <event.h>
53#include <evutil.h>
54
55struct timeval timeout = {3, 0};
56
57static void
58closed_cb(evutil_socket_t fd, short event, void *arg)
59{
60	if (EV_TIMEOUT & event) {
61		printf("%s: Timeout!\n", __func__);
62		exit(1);
63	}
64
65	if (EV_CLOSED & event) {
66		printf("%s: detected socket close with success\n", __func__);
67		return;
68	}
69
70	printf("%s: unable to detect socket close\n", __func__);
71	exit(1);
72}
73
74int
75main(int argc, char **argv)
76{
77	struct event_base *base;
78	struct event_config *cfg;
79	struct event *ev;
80	const char *test = "test string";
81	evutil_socket_t pair[2];
82
83	/* Initialize the library and check if the backend
84	   supports EV_FEATURE_EARLY_CLOSE
85	*/
86	cfg = event_config_new();
87	event_config_require_features(cfg, EV_FEATURE_EARLY_CLOSE);
88	base = event_base_new_with_config(cfg);
89	event_config_free(cfg);
90	if (!base) {
91		/* Backend doesn't support EV_FEATURE_EARLY_CLOSE */
92		return 0;
93	}
94
95	/* Create a pair of sockets */
96	if (evutil_socketpair(AF_UNIX, SOCK_STREAM, 0, pair) == -1)
97		return (1);
98
99	/* Send some data on socket 0 and immediately close it */
100	if (send(pair[0], test, (int)strlen(test)+1, 0) < 0)
101		return (1);
102	shutdown(pair[0], EVUTIL_SHUT_WR);
103
104	/* Dispatch */
105	ev = event_new(base, pair[1], EV_CLOSED | EV_TIMEOUT, closed_cb, event_self_cbarg());
106	event_add(ev, &timeout);
107	event_base_dispatch(base);
108
109	/* Finalize library */
110	event_free(ev);
111	event_base_free(base);
112	return 0;
113}
114
115