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Introduce a test program for IPv4 broadcast datagram send.
This commit is contained in:
Bruce M Simpson
parent
6aa5b62315
commit
2b743a9e9d
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=167140
10
tools/regression/netinet/ipbroadcast/Makefile
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10
tools/regression/netinet/ipbroadcast/Makefile
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#
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# $FreeBSD$
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#
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PROG= ipbroadcast
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NO_MAN=
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WARNS?= 6
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.include <bsd.prog.mk>
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266
tools/regression/netinet/ipbroadcast/ipbroadcast.c
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266
tools/regression/netinet/ipbroadcast/ipbroadcast.c
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/*-
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* Copyright (c) 2007 Bruce M. Simpson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Test utility for IPv4 broadcast sockets.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <signal.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <err.h>
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#include <errno.h>
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#include <getopt.h>
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#include <pwd.h>
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#include <unistd.h>
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#include <netdb.h>
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#include <libgen.h>
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#define DEFAULT_PORT 6698
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#define DEFAULT_PAYLOAD_SIZE 24
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#define MY_CMSG_SIZE CMSG_SPACE(sizeof(struct in_addr))
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static char *progname = NULL;
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static void
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usage(void)
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{
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fprintf(stderr,
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"usage: %s [-1] [-b] [-B] [-d] [-l len] [-p port] [-r] [-s srcaddr] \n"
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" <dest>\n",
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progname);
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fprintf(stderr, "IPv4 broadcast test program. Sends a %d byte UDP "
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"datagram to <dest>:<port>.\n", DEFAULT_PAYLOAD_SIZE);
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fprintf(stderr, "-1: Set IP_ONESBCAST\n");
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fprintf(stderr, "-b: bind socket to INADDR_ANY:<sport>\n");
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fprintf(stderr, "-B: Set SO_BROADCAST\n");
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fprintf(stderr, "-d: Set SO_DONTROUTE\n");
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#if 0
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fprintf(stderr, "-r: Fill datagram with random bytes\n");
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#endif
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fprintf(stderr, "-s: Set IP_SENDSRCADDR to <srcaddr>\n");
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fprintf(stderr, "-l: Set payload size to <len>\n");
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fprintf(stderr, "-p: Set source and destination port (default: %d)\n",
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DEFAULT_PORT);
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exit(EXIT_FAILURE);
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}
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int
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main(int argc, char *argv[])
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{
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char *buf;
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char cmsgbuf[MY_CMSG_SIZE];
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struct iovec iov[1];
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struct msghdr msg;
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struct sockaddr_in dsin;
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struct cmsghdr *cmsgp;
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struct in_addr dstaddr;
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struct in_addr *srcaddrp;
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char *srcaddr_s;
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int ch;
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int dobind;
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int dobroadcast;
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int dontroute;
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int doonesbcast;
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int dorandom;
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size_t buflen;
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ssize_t nbytes;
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int portno;
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int ret;
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int s;
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socklen_t soptlen;
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int soptval;
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dobind = 0;
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dobroadcast = 0;
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dontroute = 0;
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doonesbcast = 0;
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dorandom = 0;
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dstaddr.s_addr = INADDR_ANY;
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srcaddr_s = NULL;
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portno = DEFAULT_PORT;
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buf = NULL;
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buflen = DEFAULT_PAYLOAD_SIZE;
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progname = basename(argv[0]);
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while ((ch = getopt(argc, argv, "1bBdl:p:rs:")) != -1) {
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switch (ch) {
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case '1':
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doonesbcast = 1;
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break;
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case 'b':
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dobind = 1;
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break;
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case 'B':
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dobroadcast = 1;
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break;
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case 'd':
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dontroute = 1;
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break;
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case 'l':
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buflen = atoi(optarg);
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break;
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case 'p':
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portno = atoi(optarg);
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break;
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case 'r':
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dorandom = 1;
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break;
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case 's':
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srcaddr_s = optarg;
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break;
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default:
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usage();
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break;
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}
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}
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argc -= optind;
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argv += optind;
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if (argc != 1)
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usage();
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if (argv[0] == NULL || inet_aton(argv[0], &dstaddr) == 0)
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usage();
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s = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (s == -1) {
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perror("socket");
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exit(EXIT_FAILURE);
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}
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if (dontroute) {
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soptval = 1;
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soptlen = sizeof(soptval);
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ret = setsockopt(s, SOL_SOCKET, SO_DONTROUTE, &soptval,
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soptlen);
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if (ret == -1) {
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perror("setsockopt SO_DONTROUTE");
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close(s);
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exit(EXIT_FAILURE);
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}
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}
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if (dobroadcast) {
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soptval = 1;
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soptlen = sizeof(soptval);
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ret = setsockopt(s, SOL_SOCKET, SO_BROADCAST, &soptval,
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soptlen);
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if (ret == -1) {
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perror("setsockopt SO_BROADCAST");
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close(s);
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exit(EXIT_FAILURE);
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}
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}
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if (doonesbcast) {
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soptval = 1;
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soptlen = sizeof(soptval);
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ret = setsockopt(s, IPPROTO_IP, IP_ONESBCAST, &soptval,
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soptlen);
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if (ret == -1) {
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perror("setsockopt IP_ONESBCAST");
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close(s);
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exit(EXIT_FAILURE);
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}
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}
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if (dobind) {
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memset(&dsin, 0, sizeof(struct sockaddr_in));
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dsin.sin_family = AF_INET;
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dsin.sin_len = sizeof(struct sockaddr_in);
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dsin.sin_addr.s_addr = INADDR_ANY;
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dsin.sin_port = htons(portno);
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ret = bind(s, (struct sockaddr *)&dsin, sizeof(dsin));
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if (ret == -1) {
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perror("bind");
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close(s);
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exit(EXIT_FAILURE);
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}
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}
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memset(&dsin, 0, sizeof(struct sockaddr_in));
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dsin.sin_family = AF_INET;
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dsin.sin_len = sizeof(struct sockaddr_in);
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dsin.sin_addr.s_addr = dstaddr.s_addr;
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dsin.sin_port = htons(portno);
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buf = malloc(buflen);
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if (buf == NULL) {
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perror("malloc");
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close(s);
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exit(EXIT_FAILURE);
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}
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memset(iov, 0, sizeof(iov));
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iov[0].iov_base = buf;
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iov[0].iov_len = buflen;
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memset(&msg, 0, sizeof(struct msghdr));
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msg.msg_name = &dsin;
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msg.msg_namelen = sizeof(dsin);
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msg.msg_iov = iov;
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msg.msg_iovlen = 1;
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if (srcaddr_s != NULL) {
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memset(cmsgbuf, 0, MY_CMSG_SIZE);
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msg.msg_control = cmsgbuf;
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msg.msg_controllen = sizeof(cmsgbuf);
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cmsgp = CMSG_FIRSTHDR(&msg);
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cmsgp->cmsg_len = CMSG_LEN(sizeof(struct in_addr));
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cmsgp->cmsg_level = IPPROTO_IP;
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cmsgp->cmsg_type = IP_SENDSRCADDR;
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srcaddrp = (struct in_addr *)CMSG_DATA(cmsgp);
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srcaddrp->s_addr = inet_addr(srcaddr_s);
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}
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nbytes = sendmsg(s, &msg, (dontroute ? MSG_DONTROUTE : 0));
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if (nbytes == -1) {
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perror("sendmsg");
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close(s);
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exit(EXIT_FAILURE);
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}
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close(s);
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exit(EXIT_SUCCESS);
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}
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