291 lines
7.1 KiB
C
291 lines
7.1 KiB
C
/*-
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* Copyright (c) 2007 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/select.h>
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#include <sys/socket.h>
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#include <sys/stat.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 <limits.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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#define PORT1 10001
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#define PORT2 10002
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static void
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try_0send(const char *test, int fd)
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{
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ssize_t len;
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char ch;
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ch = 0;
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len = send(fd, &ch, 0, 0);
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if (len < 0)
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err(-1, "%s: try_0send", test);
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if (len != 0)
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errx(-1, "%s: try_0send: returned %zd", test, len);
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}
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static void
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try_0write(const char *test, int fd)
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{
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ssize_t len;
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char ch;
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ch = 0;
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len = write(fd, &ch, 0);
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if (len < 0)
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err(-1, "%s: try_0write", test);
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if (len != 0)
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errx(-1, "%s: try_0write: returned %zd", test, len);
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}
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static void
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setup_udp(const char *test, int *fdp)
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{
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struct sockaddr_in sin;
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int sock1, sock2;
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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(PORT1);
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sock1 = socket(PF_INET, SOCK_DGRAM, 0);
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if (sock1 < 0)
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err(-1, "%s: setup_udp: socket", test);
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if (bind(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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err(-1, "%s: setup_udp: bind(%s, %d)", test,
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inet_ntoa(sin.sin_addr), PORT1);
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sin.sin_port = htons(PORT2);
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if (connect(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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err(-1, "%s: setup_udp: connect(%s, %d)", test,
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inet_ntoa(sin.sin_addr), PORT2);
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sock2 = socket(PF_INET, SOCK_DGRAM, 0);
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if (sock2 < 0)
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err(-1, "%s: setup_udp: socket", test);
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if (bind(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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err(-1, "%s: setup_udp: bind(%s, %d)", test,
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inet_ntoa(sin.sin_addr), PORT2);
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sin.sin_port = htons(PORT1);
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if (connect(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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err(-1, "%s: setup_udp: connect(%s, %d)", test,
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inet_ntoa(sin.sin_addr), PORT1);
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fdp[0] = sock1;
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fdp[1] = sock2;
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}
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static void
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setup_tcp(const char *test, int *fdp)
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{
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fd_set writefds, exceptfds;
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struct sockaddr_in sin;
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int ret, sock1, sock2, sock3;
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struct timeval tv;
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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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/*
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* First set up the listen socket.
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*/
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sin.sin_port = htons(PORT1);
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sock1 = socket(PF_INET, SOCK_STREAM, 0);
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if (sock1 < 0)
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err(-1, "%s: setup_tcp: socket", test);
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if (bind(sock1, (struct sockaddr *)&sin, sizeof(sin)) < 0)
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err(-1, "%s: bind(%s, %d)", test, inet_ntoa(sin.sin_addr),
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PORT1);
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if (listen(sock1, -1) < 0)
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err(-1, "%s: listen", test);
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/*
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* Now connect to it, non-blocking so that we don't deadlock against
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* ourselves.
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*/
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sock2 = socket(PF_INET, SOCK_STREAM, 0);
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if (sock2 < 0)
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err(-1, "%s: setup_tcp: socket", test);
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if (fcntl(sock2, F_SETFL, O_NONBLOCK) < 0)
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err(-1, "%s: setup_tcp: fcntl(O_NONBLOCK)", test);
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if (connect(sock2, (struct sockaddr *)&sin, sizeof(sin)) < 0 &&
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errno != EINPROGRESS)
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err(-1, "%s: setup_tcp: connect(%s, %d)", test,
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inet_ntoa(sin.sin_addr), PORT1);
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/*
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* Now pick up the connection after sleeping a moment to make sure
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* there's been time for some packets to go back and forth.
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*/
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if (sleep(1) < 0)
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err(-1, "%s: sleep(1)", test);
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sock3 = accept(sock1, NULL, NULL);
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if (sock3 < 0)
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err(-1, "%s: accept", test);
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if (sleep(1) < 0)
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err(-1, "%s: sleep(1)", test);
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FD_ZERO(&writefds);
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FD_SET(sock2, &writefds);
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FD_ZERO(&exceptfds);
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FD_SET(sock2, &exceptfds);
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tv.tv_sec = 1;
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tv.tv_usec = 0;
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ret = select(sock2 + 1, NULL, &writefds, &exceptfds, &tv);
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if (ret < 0)
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err(-1, "%s: setup_tcp: select", test);
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if (FD_ISSET(sock2, &exceptfds))
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errx(-1, "%s: setup_tcp: select: exception", test);
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if (!FD_ISSET(sock2, &writefds))
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errx(-1, "%s: setup_tcp: select: not writable", test);
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close(sock1);
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fdp[0] = sock2;
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fdp[1] = sock3;
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}
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static void
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setup_udsstream(const char *test, int *fdp)
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{
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if (socketpair(PF_LOCAL, SOCK_STREAM, 0, fdp) < 0)
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err(-1, "%s: setup_udsstream: socketpair", test);
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}
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static void
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setup_udsdgram(const char *test, int *fdp)
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{
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if (socketpair(PF_LOCAL, SOCK_DGRAM, 0, fdp) < 0)
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err(-1, "%s: setup_udsdgram: socketpair", test);
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}
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static void
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setup_pipe(const char *test, int *fdp)
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{
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if (pipe(fdp) < 0)
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err(-1, "%s: setup_pipe: pipe", test);
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}
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static void
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setup_fifo(const char *test, int *fdp)
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{
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char path[PATH_MAX];
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int fd1, fd2;
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strcpy(path, "/tmp/0send_fifo.XXXXXXX");
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if (mktemp(path) == NULL)
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err(-1, "%s: setup_fifo: mktemp", test);
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if (mkfifo(path, 0600) < 0)
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err(-1, "%s: setup_fifo: mkfifo(%s)", test, path);
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fd1 = open(path, O_RDONLY | O_NONBLOCK);
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if (fd1 < 0)
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err(-1, "%s: setup_fifo: open(%s, O_RDONLY)", test, path);
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fd2 = open(path, O_WRONLY | O_NONBLOCK);
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if (fd2 < 0)
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err(-1, "%s: setup_fifo: open(%s, O_WRONLY)", test, path);
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fdp[0] = fd2;
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fdp[1] = fd1;
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}
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static void
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close_both(int *fdp)
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{
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close(fdp[0]);
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fdp[0] = -1;
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close(fdp[1]);
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fdp[1] = -1;
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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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int fd[2];
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setup_udp("udp_0send", fd);
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try_0send("udp_0send", fd[0]);
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close_both(fd);
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setup_udp("udp_0write", fd);
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try_0write("udp_0write", fd[0]);
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close_both(fd);
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setup_tcp("tcp_0send", fd);
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try_0send("tcp_0send", fd[0]);
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close_both(fd);
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setup_tcp("tcp_0write", fd);
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try_0write("tcp_0write", fd[0]);
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close_both(fd);
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setup_udsstream("udsstream_0send", fd);
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try_0send("udsstream_0send", fd[0]);
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close_both(fd);
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setup_udsstream("udsstream_0write", fd);
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try_0write("udsstream_0write", fd[0]);
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close_both(fd);
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setup_udsdgram("udsdgram_0send", fd);
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try_0send("udsdgram_0send", fd[0]);
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close_both(fd);
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setup_udsdgram("udsdgram_0write", fd);
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try_0write("udsdgram_0write", fd[0]);
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close_both(fd);
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setup_pipe("pipe_0write", fd);
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try_0write("pipd_0write", fd[0]);
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close_both(fd);
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setup_fifo("fifo_0write", fd);
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try_0write("fifo_0write", fd[0]);
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close_both(fd);
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return (0);
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}
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