87 lines
2.8 KiB
C
87 lines
2.8 KiB
C
/*
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* Copyright (c) 2014-2015 Dmitry V. Levin <ldv@altlinux.org>
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <stddef.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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#include <sys/wait.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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int main(void)
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{
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static const char data[] = "data";
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const size_t size = sizeof(data) - 1;
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struct sockaddr_in addr;
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socklen_t len = sizeof(addr);
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pid_t pid;
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memset(&addr, 0, sizeof(addr));
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addr.sin_family = AF_INET;
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addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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close(0);
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close(1);
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if (socket(PF_INET, SOCK_STREAM, 0)) {
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perror("socket");
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return 77;
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}
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if (bind(0, (struct sockaddr *) &addr, len)) {
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perror("bind");
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return 77;
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}
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assert(listen(0, 5) == 0);
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memset(&addr, 0, sizeof(addr));
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assert(getsockname(0, (struct sockaddr *) &addr, &len) == 0);
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assert((pid = fork()) >= 0);
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if (pid) {
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char buf[sizeof(data)];
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int status;
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assert(accept(0, (struct sockaddr *) &addr, &len) == 1);
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assert(close(0) == 0);
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assert(recv(1, buf, sizeof(buf), MSG_WAITALL) == (int) size);
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assert(waitpid(pid, &status, 0) == pid);
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assert(status == 0);
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assert(close(1) == 0);
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} else {
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assert(close(0) == 0);
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assert(socket(PF_INET, SOCK_STREAM, 0) == 0);
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assert(connect(0, (struct sockaddr *) &addr, len) == 0);
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assert(send(0, data, size, MSG_DONTROUTE) == (int) size);
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assert(close(0) == 0);
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}
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return 0;
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}
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