1/*-
2 * Copyright (c) 2005 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/param.h>
28#include <sys/jail.h>
29#include <sys/socket.h>
30
31#include <netinet/in.h>
32
33#include <arpa/inet.h>
34
35#include <err.h>
36#include <errno.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <unistd.h>
41
42/*
43 * A bug in the jail(8) code prevented processes in jail from properly
44 * connecting UDP sockets.  This test program attempts to exercise that bug.
45 */
46
47static void
48usage(void)
49{
50
51	fprintf(stderr, "udpconnectjail: no arguments\n");
52	exit(-1);
53}
54
55static void
56test(const char *context, struct sockaddr_in *sin)
57{
58	int sock;
59
60	sock = socket(PF_INET, SOCK_DGRAM, 0);
61	if (sock == -1)
62		errx(-1, "%s: socket(PF_INET, SOCK_DGRAM, 0): %s", context,
63		    strerror(errno));
64
65	if (connect(sock, (struct sockaddr *)sin, sizeof(*sin)) < 0)
66		errx(-1, "%s: connect(%s): %s", context,
67		    inet_ntoa(sin->sin_addr), strerror(errno));
68
69	if (close(sock) < 0)
70		errx(-1, "%s: close(): %s", context, strerror(errno));
71}
72
73int
74main(int argc, __unused char *argv[])
75{
76	struct sockaddr_in sin;
77	struct jail thejail;
78	struct in_addr ia4;
79
80	if (argc != 1)
81		usage();
82
83	bzero(&sin, sizeof(sin));
84	sin.sin_len = sizeof(sin);
85	sin.sin_family = AF_INET;
86	sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
87	sin.sin_port = htons(8080);	/* Arbitrary */
88
89	/*
90	 * First run the system call test outside of a jail.
91	 */
92	test("not in jail", &sin);
93
94	/*
95	 * Now re-run in a jail.
96	 * XXX-BZ should switch to jail_set(2).
97	 */
98	ia4.s_addr = htonl(INADDR_LOOPBACK);
99
100	bzero(&thejail, sizeof(thejail));
101	thejail.version = JAIL_API_VERSION;
102	thejail.path = "/";
103	thejail.hostname = "jail";
104	thejail.jailname = "udpconnectjail";
105	thejail.ip4s = 1;
106	thejail.ip4 = &ia4;
107
108	if (jail(&thejail) < 0)
109		errx(-1, "jail: %s", strerror(errno));
110	test("in jail", &sin);
111
112	fprintf(stdout, "PASS\n");
113
114	return (0);
115}
116