1/*-
2 * Copyright (c) 2010-2011 Juniper Networks, Inc.
3 * All rights reserved.
4 *
5 * This software was developed by Robert N. M. Watson under contract
6 * to Juniper Networks, Inc.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30/*
31 * This is a test tool for IP divert sockets.  For the time being, it just
32 * exercise creation and binding of sockets, rather than their divert
33 * behaviour.  It would be highly desirable to broaden this test tool to
34 * include packet injection and diversion.
35 */
36
37#include <sys/types.h>
38#include <sys/socket.h>
39
40#include <netinet/in.h>
41
42#include <err.h>
43#include <errno.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48
49static void
50ok(const char *test)
51{
52
53	fprintf(stderr, "%s: OK\n", test);
54}
55
56static void
57fail(const char *test, const char *note)
58{
59
60	fprintf(stderr, "%s - %s: FAIL (%s)\n", test, note, strerror(errno));
61	exit(1);
62}
63
64static void
65failx(const char *test, const char *note)
66{
67
68	fprintf(stderr, "%s - %s: FAIL\n", test, note);
69	exit(1);
70}
71
72static int
73ipdivert_create(const char *test)
74{
75	int s;
76
77	s = socket(PF_DIVERT, SOCK_RAW, 0);
78	if (s < 0)
79		fail(test, "socket");
80	return (s);
81}
82
83static void
84ipdivert_close(const char *test, int s)
85{
86
87	if (close(s) < 0)
88		fail(test, "close");
89}
90
91static void
92ipdivert_bind(const char *test, int s, u_short port, int expect)
93{
94	struct sockaddr_in sin;
95	int err;
96
97	bzero(&sin, sizeof(sin));
98	sin.sin_family = AF_INET;
99	sin.sin_addr.s_addr = htonl(INADDR_ANY);
100	sin.sin_port = htons(port);
101
102	err = bind(s, (struct sockaddr *)&sin, sizeof(sin));
103	if (err < 0) {
104		if (expect == 0)
105			fail(test, "bind");
106		if (errno != expect)
107			fail(test, "bind");
108	} else {
109		if (expect != 0)
110			failx(test, "bind");
111	}
112}
113
114int
115main(int argc, char *argv[])
116{
117	const char *test;
118	int s1, s2;
119
120	/*
121	 * First test: create and close an IP divert socket.
122	 */
123	test = "create_close";
124	s1 = ipdivert_create(test);
125	ipdivert_close(test, s1);
126	ok(test);
127
128	/*
129	 * Second test: create, bind, and close an IP divert socket.
130	 */
131	test = "create_bind_close";
132	s1 = ipdivert_create(test);
133	ipdivert_bind(test, s1, 1000, 0);
134	ipdivert_close(test, s1);
135	ok(test);
136
137	/*
138	 * Third test: create two sockets, bind to different ports, and close.
139	 * This should succeed due to non-conflict on the port numbers.
140	 */
141	test = "create2_bind2_close2";
142	s1 = ipdivert_create(test);
143	s2 = ipdivert_create(test);
144	ipdivert_bind(test, s1, 1000, 0);
145	ipdivert_bind(test, s2, 1001, 0);
146	ipdivert_close(test, s1);
147	ipdivert_close(test, s2);
148	ok(test);
149
150	/*
151	 * Fourth test: create two sockets, bind to the *same* port, and
152	 * close.  This should fail due to conflicting port numbers.
153	 */
154	test = "create2_bind2_conflict_close2";
155	s1 = ipdivert_create(test);
156	s2 = ipdivert_create(test);
157	ipdivert_bind(test, s1, 1000, 0);
158	ipdivert_bind(test, s2, 1000, EADDRINUSE);
159	ipdivert_close(test, s1);
160	ipdivert_close(test, s2);
161	ok(test);
162
163	return (0);
164}
165