ipdivert.c revision 302408 
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 * $FreeBSD: stable/11/tools/regression/netinet/ipdivert/ipdivert.c 222689 2011-06-04 16:25:12Z rwatson $
30 */
31
32/*
33 * This is a test tool for IP divert sockets.  For the time being, it just
34 * exercise creation and binding of sockets, rather than their divert
35 * behaviour.  It would be highly desirable to broaden this test tool to
36 * include packet injection and diversion.
37 */
38
39#include <sys/types.h>
40#include <sys/socket.h>
41
42#include <netinet/in.h>
43
44#include <err.h>
45#include <errno.h>
46#include <stdio.h>
47#include <stdlib.h>
48#include <string.h>
49#include <unistd.h>
50
51static void
52ok(const char *test)
53{
54
55	fprintf(stderr, "%s: OK\n", test);
56}
57
58static void
59fail(const char *test, const char *note)
60{
61
62	fprintf(stderr, "%s - %s: FAIL (%s)\n", test, note, strerror(errno));
63	exit(1);
64}
65
66static void
67failx(const char *test, const char *note)
68{
69
70	fprintf(stderr, "%s - %s: FAIL\n", test, note);
71	exit(1);
72}
73
74static int
75ipdivert_create(const char *test)
76{
77	int s;
78
79	s = socket(PF_INET, SOCK_RAW, IPPROTO_DIVERT);
80	if (s < 0)
81		fail(test, "socket");
82	return (s);
83}
84
85static void
86ipdivert_close(const char *test, int s)
87{
88
89	if (close(s) < 0)
90		fail(test, "close");
91}
92
93static void
94ipdivert_bind(const char *test, int s, u_short port, int expect)
95{
96	struct sockaddr_in sin;
97	int err;
98
99	bzero(&sin, sizeof(sin));
100	sin.sin_family = AF_INET;
101	sin.sin_addr.s_addr = htonl(INADDR_ANY);
102	sin.sin_port = htons(port);
103
104	err = bind(s, (struct sockaddr *)&sin, sizeof(sin));
105	if (err < 0) {
106		if (expect == 0)
107			fail(test, "bind");
108		if (errno != expect)
109			fail(test, "bind");
110	} else {
111		if (expect != 0)
112			failx(test, "bind");
113	}
114}
115
116int
117main(int argc, char *argv[])
118{
119	const char *test;
120	int s1, s2;
121
122	/*
123	 * First test: create and close an IP divert socket.
124	 */
125	test = "create_close";
126	s1 = ipdivert_create(test);
127	ipdivert_close(test, s1);
128	ok(test);
129
130	/*
131	 * Second test: create, bind, and close an IP divert socket.
132	 */
133	test = "create_bind_close";
134	s1 = ipdivert_create(test);
135	ipdivert_bind(test, s1, 1000, 0);
136	ipdivert_close(test, s1);
137	ok(test);
138
139	/*
140	 * Third test: create two sockets, bind to different ports, and close.
141	 * This should succeed due to non-conflict on the port numbers.
142	 */
143	test = "create2_bind2_close2";
144	s1 = ipdivert_create(test);
145	s2 = ipdivert_create(test);
146	ipdivert_bind(test, s1, 1000, 0);
147	ipdivert_bind(test, s2, 1001, 0);
148	ipdivert_close(test, s1);
149	ipdivert_close(test, s2);
150	ok(test);
151
152	/*
153	 * Fourth test: create two sockets, bind to the *same* port, and
154	 * close.  This should fail due to conflicting port numbers.
155	 */
156	test = "create2_bind2_conflict_close2";
157	s1 = ipdivert_create(test);
158	s2 = ipdivert_create(test);
159	ipdivert_bind(test, s1, 1000, 0);
160	ipdivert_bind(test, s2, 1000, EADDRINUSE);
161	ipdivert_close(test, s1);
162	ipdivert_close(test, s2);
163	ok(test);
164
165	return (0);
166}
167