minix/tests/lib/librumphijack/h_netget.c

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/* $NetBSD: h_netget.c,v 1.2 2012/04/17 09:23:21 jruoho Exp $ */
/*-
* Copyright (c) 2011 Antti Kantee. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* simple utility to fetch a webpage. we wouldn't need this
* if we had something like netcat in base
*/
#include <sys/cdefs.h>
__RCSID("$NetBSD: h_netget.c,v 1.2 2012/04/17 09:23:21 jruoho Exp $");
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define GETSTR "GET / HTTP/1.0\n\n"
int
main(int argc, char *argv[])
{
char buf[8192];
struct sockaddr_in sin;
ssize_t n;
int s, fd;
setprogname(argv[0]);
if (argc != 4) {
fprintf(stderr, "usage: %s address port savefile\n",
getprogname());
return EXIT_FAILURE;
}
s = socket(PF_INET, SOCK_STREAM, 0);
if (s == -1)
err(EXIT_FAILURE, "socket");
memset(&sin, 0, sizeof(sin));
sin.sin_len = sizeof(sin);
sin.sin_family = AF_INET;
sin.sin_port = htons(atoi(argv[2]));
sin.sin_addr.s_addr = inet_addr(argv[1]);
fd = open(argv[3], O_CREAT | O_RDWR, 0644);
if (fd == -1)
err(EXIT_FAILURE, "open");
if (ftruncate(fd, 0) == -1)
err(EXIT_FAILURE, "ftruncate savefile");
if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) == -1)
err(EXIT_FAILURE, "connect");
if (write(s, GETSTR, strlen(GETSTR)) != strlen(GETSTR))
err(EXIT_FAILURE, "socket write");
for (;;) {
n = read(s, buf, sizeof(buf));
if (n == 0)
break;
if (n == -1)
err(EXIT_FAILURE, "socket read");
if (write(fd, buf, n) != n)
err(EXIT_FAILURE, "write file");
}
return EXIT_SUCCESS;
}