sys/netinet/udp_dontroute.c

/* $MidnightBSD$ */
/*
 *  Copyright (c) 2014 Spectra Logic Corporation
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions, and the following disclaimer,
 *     without modification.
 *  2. Redistributions in binary form must reproduce at minimum a disclaimer
 *     substantially similar to the "NO WARRANTY" disclaimer below
 *     ("Disclaimer") and any redistribution must be conditioned upon
 *     including a substantially similar Disclaimer requirement for further
 *     binary redistribution.
 *
 *  NO WARRANTY
 *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
 *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *  HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 *  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 *  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
 *  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *  POSSIBILITY OF SUCH DAMAGES.
 *
 *  Authors: Alan Somers         (Spectra Logic Corporation)
 *
 * $FreeBSD: stable/10/tests/sys/netinet/udp_dontroute.c 267186 2014-06-06 20:35:40Z asomers $
 */

#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/socket.h>

#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

/*
 * Sends a single UDP packet to the provided address, with SO_DONTROUTE set
 * I couldn't find a way to do this with builtin utilities like nc(1)
 */
int
main(int argc, char **argv)
{
        struct sockaddr_in dst;
        int s, t;
        int opt;
        int ret;
        ssize_t len;
        const char* sendbuf = "Hello, World!";
        const size_t buflen = 80;
        char recvbuf[buflen];

        if (argc != 3) {
                fprintf(stderr, "Usage: %s ip_address tapdev\n", argv[0]);
                exit(2);
        }

        t = open(argv[2], O_RDWR | O_NONBLOCK);
        if (t < 0)
                err(EXIT_FAILURE, "open");

        s = socket(PF_INET, SOCK_DGRAM, 0);
        if (s < 0)
                err(EXIT_FAILURE, "socket");
        opt = 1;

        ret = setsockopt(s, SOL_SOCKET, SO_DONTROUTE, &opt, sizeof(opt));
        if (ret == -1)
                err(EXIT_FAILURE, "setsockopt(SO_DONTROUTE)");

        dst.sin_len = sizeof(dst);
        dst.sin_family = AF_INET;
        dst.sin_port = htons(46120);
        dst.sin_addr.s_addr = inet_addr(argv[1]);
        if (dst.sin_addr.s_addr == htonl(INADDR_NONE)) {
                fprintf(stderr, "Invalid address: %s\n", argv[1]);
                exit(2);
        }
        ret = sendto(s, sendbuf, strlen(sendbuf), 0, (struct sockaddr*)&dst,
            dst.sin_len);
        if (ret == -1)
                err(EXIT_FAILURE, "sendto");

        /* Verify that the packet went to the desired tap device */

        len = read(t, recvbuf, buflen);
        if (len == 0)
                errx(EXIT_FAILURE, "read returned EOF");
        else if (len < 0 && errno == EAGAIN)
                errx(EXIT_FAILURE, "Did not receive any packets");
        else if (len < 0)
                err(EXIT_FAILURE, "read");

        /*
         * If read returned anything at all, consider it a success.  The packet
         * should be an Ethernet frame containing an ARP request for
         * ip_address.  We won't bother to decode it
         */
        return (0);
}
Revision:	11970
Committed:	Sat Jul 28 20:41:20 2018 UTC (5 years, 9 months ago) by laffer1
Content type:	text/plain
File size:	3557 byte(s)
Log Message:	add netinet tests
#	Content
1	/* $MidnightBSD$ */
2	/*
3	* Copyright (c) 2014 Spectra Logic Corporation
4	* All rights reserved.
5	*
6	* Redistribution and use in source and binary forms, with or without
7	* modification, are permitted provided that the following conditions
8	* are met:
9	* 1. Redistributions of source code must retain the above copyright
10	* notice, this list of conditions, and the following disclaimer,
11	* without modification.
12	* 2. Redistributions in binary form must reproduce at minimum a disclaimer
13	* substantially similar to the "NO WARRANTY" disclaimer below
14	* ("Disclaimer") and any redistribution must be conditioned upon
15	* including a substantially similar Disclaimer requirement for further
16	* binary redistribution.
17	*
18	* NO WARRANTY
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
27	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
28	* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29	* POSSIBILITY OF SUCH DAMAGES.
30	*
31	* Authors: Alan Somers (Spectra Logic Corporation)
32	*
33	* $FreeBSD: stable/10/tests/sys/netinet/udp_dontroute.c 267186 2014-06-06 20:35:40Z asomers $
34	*/
35
36	#include <arpa/inet.h>
37	#include <netinet/in.h>
38	#include <sys/types.h>
39	#include <sys/socket.h>
40
41	#include <err.h>
42	#include <errno.h>
43	#include <fcntl.h>
44	#include <stdio.h>
45	#include <stdlib.h>
46	#include <string.h>
47	#include <unistd.h>
48
49	/*
50	* Sends a single UDP packet to the provided address, with SO_DONTROUTE set
51	* I couldn't find a way to do this with builtin utilities like nc(1)
52	*/
53	int
54	main(int argc, char **argv)
55	{
56	struct sockaddr_in dst;
57	int s, t;
58	int opt;
59	int ret;
60	ssize_t len;
61	const char* sendbuf = "Hello, World!";
62	const size_t buflen = 80;
63	char recvbuf[buflen];
64
65	if (argc != 3) {
66	fprintf(stderr, "Usage: %s ip_address tapdev\n", argv[0]);
67	exit(2);
68	}
69
70	t = open(argv[2], O_RDWR \| O_NONBLOCK);
71	if (t < 0)
72	err(EXIT_FAILURE, "open");
73
74	s = socket(PF_INET, SOCK_DGRAM, 0);
75	if (s < 0)
76	err(EXIT_FAILURE, "socket");
77	opt = 1;
78
79	ret = setsockopt(s, SOL_SOCKET, SO_DONTROUTE, &opt, sizeof(opt));
80	if (ret == -1)
81	err(EXIT_FAILURE, "setsockopt(SO_DONTROUTE)");
82
83	dst.sin_len = sizeof(dst);
84	dst.sin_family = AF_INET;
85	dst.sin_port = htons(46120);
86	dst.sin_addr.s_addr = inet_addr(argv[1]);
87	if (dst.sin_addr.s_addr == htonl(INADDR_NONE)) {
88	fprintf(stderr, "Invalid address: %s\n", argv[1]);
89	exit(2);
90	}
91	ret = sendto(s, sendbuf, strlen(sendbuf), 0, (struct sockaddr*)&dst,
92	dst.sin_len);
93	if (ret == -1)
94	err(EXIT_FAILURE, "sendto");
95
96	/* Verify that the packet went to the desired tap device */
97
98	len = read(t, recvbuf, buflen);
99	if (len == 0)
100	errx(EXIT_FAILURE, "read returned EOF");
101	else if (len < 0 && errno == EAGAIN)
102	errx(EXIT_FAILURE, "Did not receive any packets");
103	else if (len < 0)
104	err(EXIT_FAILURE, "read");
105
106	/*
107	* If read returned anything at all, consider it a success. The packet
108	* should be an Ethernet frame containing an ARP request for
109	* ip_address. We won't bother to decode it
110	*/
111	return (0);
112	}
Name	Value
svn:eol-style	native
svn:keywords	MidnightBSD=%H
svn:mime-type	text/plain