tests/lib/librumphijack/h_netget.c

   1 /*      $NetBSD: h_netget.c,v 1.2 2012/04/17 09:23:21 jruoho Exp $      */
   2
   3 /*-
   4  * Copyright (c) 2011 Antti Kantee.  All Rights Reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * simple utility to fetch a webpage.  we wouldn't need this
  30  * if we had something like netcat in base
  31  */
  32
  33 #include <sys/cdefs.h>
  34 __RCSID("$NetBSD: h_netget.c,v 1.2 2012/04/17 09:23:21 jruoho Exp $");
  35
  36 #include <sys/types.h>
  37 #include <sys/socket.h>
  38
  39 #include <arpa/inet.h>
  40
  41 #include <netinet/in.h>
  42
  43 #include <err.h>
  44 #include <fcntl.h>
  45 #include <stdio.h>
  46 #include <stdlib.h>
  47 #include <string.h>
  48 #include <unistd.h>
  49
  50 #define GETSTR "GET / HTTP/1.0\n\n"
  51
  52 int
  53 main(int argc, char *argv[])
  54 {
  55         char buf[8192];
  56         struct sockaddr_in sin;
  57         ssize_t n;
  58         int s, fd;
  59
  60         setprogname(argv[0]);
  61         if (argc != 4) {
  62                 fprintf(stderr, "usage: %s address port savefile\n",
  63                     getprogname());
  64                 return EXIT_FAILURE;
  65         }
  66
  67         s = socket(PF_INET, SOCK_STREAM, 0);
  68         if (s == -1)
  69                 err(EXIT_FAILURE, "socket");
  70
  71         memset(&sin, 0, sizeof(sin));
  72         sin.sin_len = sizeof(sin);
  73         sin.sin_family = AF_INET;
  74         sin.sin_port = htons(atoi(argv[2]));
  75         sin.sin_addr.s_addr = inet_addr(argv[1]);
  76
  77         fd = open(argv[3], O_CREAT | O_RDWR, 0644);
  78         if (fd == -1)
  79                 err(EXIT_FAILURE, "open");
  80         if (ftruncate(fd, 0) == -1)
  81                 err(EXIT_FAILURE, "ftruncate savefile");
  82
  83         if (connect(s, (struct sockaddr *)&sin, sizeof(sin)) == -1)
  84                 err(EXIT_FAILURE, "connect");
  85
  86         if (write(s, GETSTR, strlen(GETSTR)) != strlen(GETSTR))
  87                 err(EXIT_FAILURE, "socket write");
  88
  89         for (;;) {
  90                 n = read(s, buf, sizeof(buf));
  91                 if (n == 0)
  92                         break;
  93                 if (n == -1)
  94                         err(EXIT_FAILURE, "socket read");
  95
  96                 if (write(fd, buf, n) != n)
  97                         err(EXIT_FAILURE, "write file");
  98         }
  99
 100         return EXIT_SUCCESS;
 101 }