1/*-
2 * Copyright (C) 2005 The FreeBSD Project.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 * $FreeBSD: releng/10.3/tools/regression/sockets/shutdown/shutdown.c 281974 2015-04-25 05:31:52Z ngie $
26 */
27
28#include <sys/types.h>
29#include <sys/socket.h>
30
31#include <netinet/in.h>
32#include <arpa/inet.h>
33
34#include <err.h>
35#include <errno.h>
36#include <stdio.h>
37#include <string.h>
38#include <unistd.h>
39
40int
41main(void)
42{
43	struct sockaddr_in sock;
44	socklen_t len;
45	int listen_sock, connect_sock;
46	u_short port;
47
48	listen_sock = -1;
49
50	/* Shutdown(2) on an invalid file descriptor has to return EBADF. */
51	if ((shutdown(listen_sock, SHUT_RDWR) != -1) && (errno != EBADF))
52		errx(-1, "shutdown() for invalid file descriptor does not "
53		    "return EBADF");
54
55	listen_sock = socket(PF_INET, SOCK_STREAM, 0);
56	if (listen_sock == -1)
57		errx(-1,
58		    "socket(PF_INET, SOCK_STREAM, 0) for listen socket: %s",
59		    strerror(errno));
60
61	bzero(&sock, sizeof(sock));
62	sock.sin_len = sizeof(sock);
63	sock.sin_family = AF_INET;
64	sock.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
65	sock.sin_port = 0;
66
67	if (bind(listen_sock, (struct sockaddr *)&sock, sizeof(sock)) < 0)
68		errx(-1, "bind(%s, %d) for listen socket: %s",
69		    inet_ntoa(sock.sin_addr), sock.sin_port, strerror(errno));
70
71	len = sizeof(sock);
72	if (getsockname(listen_sock, (struct sockaddr *)&sock, &len) < 0)
73		errx(-1, "getsockname() for listen socket: %s",
74		    strerror(errno));
75	port = sock.sin_port;
76
77	if (listen(listen_sock, -1) < 0)
78		errx(-1, "listen() for listen socket: %s", strerror(errno));
79
80	connect_sock = socket(PF_INET, SOCK_STREAM, 0);
81	if (connect_sock == -1)
82		errx(-1, "socket(PF_INET, SOCK_STREAM, 0) for connect "
83		    "socket: %s", strerror(errno));
84
85	bzero(&sock, sizeof(sock));
86	sock.sin_len = sizeof(sock);
87	sock.sin_family = AF_INET;
88	sock.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
89	sock.sin_port = port;
90
91	if (connect(connect_sock, (struct sockaddr *)&sock, sizeof(sock)) < 0)
92		errx(-1, "connect() for connect socket: %s", strerror(errno));
93	/* Try to pass an invalid flags. */
94	if ((shutdown(connect_sock, SHUT_RD - 1) != -1) && (errno != EINVAL))
95		errx(-1, "shutdown(SHUT_RD - 1) does not return EINVAL");
96	if ((shutdown(connect_sock, SHUT_RDWR + 1) != -1) && (errno != EINVAL))
97		errx(-1, "shutdown(SHUT_RDWR + 1) does not return EINVAL");
98
99	if (shutdown(connect_sock, SHUT_RD) < 0)
100		errx(-1, "shutdown(SHUT_RD) for connect socket: %s",
101		    strerror(errno));
102	if (shutdown(connect_sock, SHUT_WR) < 0)
103		errx(-1, "shutdown(SHUT_WR) for connect socket: %s",
104		    strerror(errno));
105
106	close(connect_sock);
107	close(listen_sock);
108
109	return (0);
110}
111