146 lines
4.2 KiB
C
146 lines
4.2 KiB
C
/*-
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* Copyright (c) 2008 Robert N. M. Watson
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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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* $FreeBSD$
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*/
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#include <sys/param.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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/*
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* The UDP code allows transmitting zero-byte datagrams, but are they
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* received?
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*/
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#define THEPORT 9543 /* Arbitrary. */
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static void
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usage(void)
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{
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errx(-1, "no arguments allowed\n");
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}
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static void
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test(int domain, const char *domainstr, struct sockaddr *sa, socklen_t salen)
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{
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int sock_send, sock_receive;
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ssize_t size;
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sock_send = socket(domain, SOCK_DGRAM, 0);
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if (sock_send < 0)
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err(-1, "socket(%s, SOCK_DGRAM, 0)", domainstr);
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sock_receive = socket(domain, SOCK_DGRAM, 0);
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if (sock_receive < 0)
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err(-1, "socket(%s, SOCK_DGRAM, 0)", domainstr);
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if (bind(sock_receive, sa, salen) < 0)
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err(-1, "Protocol %s bind(sock_receive)", domainstr);
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if (fcntl(sock_receive, F_SETFL, O_NONBLOCK, 1) < 0)
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err(-1, "Protocll %s fcntl(sock_receive, FL_SETFL, "
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"O_NONBLOCK)", domainstr);
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if (connect(sock_send, sa, salen) < 0)
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err(-1, "Protocol %s connect(sock_send)", domainstr);
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size = recv(sock_receive, NULL, 0, 0);
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if (size > 0)
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errx(-1, "Protocol %s recv(sock_receive, NULL, 0) before: %zd",
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domainstr, size);
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else if (size < 0)
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err(-1, "Protocol %s recv(sock_receive, NULL, 0) before",
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domainstr);
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size = send(sock_send, NULL, 0, 0);
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if (size < 0)
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err(-1, "Protocol %s send(sock_send, NULL, 0)", domainstr);
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(void)sleep(1);
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size = recv(sock_receive, NULL, 0, 0);
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if (size < 0)
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err(-1, "Protocol %s recv(sock_receive, NULL, 0) test",
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domainstr);
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size = recv(sock_receive, NULL, 0, 0);
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if (size > 0)
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errx(-1, "Protocol %s recv(sock_receive, NULL, 0) after: %zd",
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domainstr, size);
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else if (size < 0)
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err(-1, "Protocol %s recv(sock_receive, NULL, 0) after",
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domainstr);
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}
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int
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main(int argc, __unused char *argv[])
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{
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struct sockaddr_un sun;
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struct sockaddr_in6 sin6;
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struct sockaddr_in sin;
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struct in6_addr loopback6addr = IN6ADDR_LOOPBACK_INIT;
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if (argc != 1)
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usage();
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bzero(&sin, sizeof(sin));
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sin.sin_len = sizeof(sin);
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sin.sin_family = AF_INET;
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sin.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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sin.sin_port = htons(THEPORT);
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test(PF_INET, "PF_INET", (struct sockaddr *)&sin, sizeof(sin));
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bzero(&sin6, sizeof(sin6));
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sin6.sin6_len = sizeof(sin6);
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sin6.sin6_family = AF_INET6;
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sin6.sin6_addr = loopback6addr;
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sin6.sin6_port = htons(THEPORT);
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test(PF_INET6, "PF_INET6", (struct sockaddr *)&sin6, sizeof(sin6));
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bzero(&sun, sizeof(sun));
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sun.sun_len = sizeof(sun);
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sun.sun_family = AF_LOCAL;
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strlcpy(sun.sun_path, "/tmp/udpzerosize-socket", sizeof(sun.sun_path));
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if (unlink(sun.sun_path) < 0 && errno != ENOENT)
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err(-1, "unlink: %s", sun.sun_path);
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test(PF_LOCAL, "PF_LOCAL", (struct sockaddr *)&sun, sizeof(sun));
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return (0);
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}
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