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
47 static void
usage(void)48 usage(void)
49 {
50
51 fprintf(stderr, "udpconnectjail: no arguments\n");
52 exit(-1);
53 }
54
55 static void
test(const char * context,struct sockaddr_in * sin)56 test(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
73 int
main(int argc,__unused char * argv[])74 main(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