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/* $OpenBSD: broadcast_bind.c,v 1.2 2015/12/02 20:45:00 mpi Exp $ */
/*
* Copyright (c) 2015 Vincent Gross <vgross@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/inet.h>
#include <sys/socket.h>
#include <netinet/in.h>
int
test_bind(char *paddr, struct in_addr *addr, u_int16_t port, int type,
int expected_errno)
{
int s, rc;
struct sockaddr_in sin;
memset(&sin, 0, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_len = sizeof(sin);
sin.sin_port = htons(port);
memcpy(&sin.sin_addr, addr, sizeof(*addr));
s = socket(PF_INET, type, 0);
if (s < 0) {
warn("socket(PF_INET, %d, 0)", type);
return (1);
}
rc = bind(s, (struct sockaddr *)&sin, sin.sin_len);
if ((rc == 0 && expected_errno == 0) ||
(rc != 0 && expected_errno == errno)) {
close(s);
return (0);
}
warn("bind(%s,%d) (type %d) expected %d, got %d", paddr, port, type,
expected_errno, errno);
close(s);
return (1);
}
int
main(int argc, char *argv[])
{
int rc;
struct in_addr uc_addr, err_addr, bc_addr;
int port = 30000;
if (argc != 4)
errx(1, "needs 2 arguments: <unicast> <error> <broadcast>");
rc = inet_pton(AF_INET, argv[1], &uc_addr);
if (rc != 1) {
if (rc)
err(1, "inet_pton(unicast)");
else
errx(1, "inet_pton(unicast): error parsing %s",
argv[1]);
}
rc = inet_pton(AF_INET, argv[2], &err_addr);
if (rc != 1) {
if (rc)
err(1, "inet_pton(error)");
else
errx(1, "inet_pton(error): error parsing %s", argv[2]);
}
rc = inet_pton(AF_INET, argv[3], &bc_addr);
if (rc != 1) {
if (rc)
err(1, "inet_pton(broadcast)");
else
errx(1, "inet_pton(broadcast): error parsing %s",
argv[3]);
}
rc = 0;
rc |= test_bind(argv[1], &uc_addr, port, SOCK_STREAM, 0);
rc |= test_bind(argv[2], &err_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
rc |= test_bind(argv[3], &bc_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
rc |= test_bind(argv[2], &err_addr, port, SOCK_STREAM, EADDRNOTAVAIL);
rc |= test_bind(argv[3], &bc_addr, port, SOCK_DGRAM, 0);
return (rc);
}
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