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 * $FreeBSD: stable/9/tools/regression/netinet/udpconnectjail/udpconnectjail.c 222487 2011-05-30 09:41:38Z bz $
27 */
28
29 #include <sys/param.h>
30 #include <sys/jail.h>
31 #include <sys/socket.h>
32
33 #include <netinet/in.h>
34
35 #include <arpa/inet.h>
36
37 #include <err.h>
38 #include <errno.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <string.h>
42 #include <unistd.h>
43
44 /*
45 * A bug in the jail(8) code prevented processes in jail from properly
46 * connecting UDP sockets. This test program attempts to exercise that bug.
47 */
48
49 static void
usage(void)50 usage(void)
51 {
52
53 fprintf(stderr, "udpconnectjail: no arguments\n");
54 exit(-1);
55 }
56
57 static void
test(const char * context,struct sockaddr_in * sin)58 test(const char *context, struct sockaddr_in *sin)
59 {
60 int sock;
61
62 sock = socket(PF_INET, SOCK_DGRAM, 0);
63 if (sock == -1)
64 errx(-1, "%s: socket(PF_INET, SOCK_DGRAM, 0): %s", context,
65 strerror(errno));
66
67 if (connect(sock, (struct sockaddr *)sin, sizeof(*sin)) < 0)
68 errx(-1, "%s: connect(%s): %s", context,
69 inet_ntoa(sin->sin_addr), strerror(errno));
70
71 if (close(sock) < 0)
72 errx(-1, "%s: close(): %s", context, strerror(errno));
73 }
74
75 int
main(int argc,__unused char * argv[])76 main(int argc, __unused char *argv[])
77 {
78 struct sockaddr_in sin;
79 struct jail thejail;
80 struct in_addr ia4;
81
82 if (argc != 1)
83 usage();
84
85 bzero(&sin, sizeof(sin));
86 sin.sin_len = sizeof(sin);
87 sin.sin_family = AF_INET;
88 sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
89 sin.sin_port = htons(8080); /* Arbitrary */
90
91 /*
92 * First run the system call test outside of a jail.
93 */
94 test("not in jail", &sin);
95
96 /*
97 * Now re-run in a jail.
98 * XXX-BZ should switch to jail_set(2).
99 */
100 ia4.s_addr = htonl(INADDR_LOOPBACK);
101
102 bzero(&thejail, sizeof(thejail));
103 thejail.version = JAIL_API_VERSION;
104 thejail.path = "/";
105 thejail.hostname = "jail";
106 thejail.jailname = "udpconnectjail";
107 thejail.ip4s = 1;
108 thejail.ip4 = &ia4;
109
110 if (jail(&thejail) < 0)
111 errx(-1, "jail: %s", strerror(errno));
112 test("in jail", &sin);
113
114 fprintf(stdout, "PASS\n");
115
116 return (0);
117 }
118