workbench/network/common/C/hostname.c

   1 /*-
   2  * Copyright (c) 1988, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 2005
   5  *      Pavel Fedin
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 4. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #define ENABLE_SETHOSTNAME
  33
  34 #include <proto/socket.h>
  35 #include <net/if_dl.h>
  36 #include <sys/cdefs.h>
  37 #include <sys/param.h>
  38 #if !defined(__AROS__)
  39 # include <err.h>
  40 #else
  41 /* TODO: We dont have <err.h> */
  42 #endif
  43 #include <netdb.h>
  44 #include <stdio.h>
  45 #include <stdlib.h>
  46 #include <string.h>
  47 #include <unistd.h>
  48 #include <proto/miami.h>
  49
  50 void usage(void);
  51
  52 #if defined(__AROS__)
  53 #include <dos/dos.h>
  54 #include <proto/exec.h>
  55 struct Library *SocketBase;
  56 struct Library *MiamiBase;
  57 #endif
  58
  59 const char version[] = "$VER: hostname 1.1 (22.12.2005)";
  60
  61 int
  62 main(int argc, char *argv[])
  63 {
  64         int ch, sflag;
  65         char *p, hostname[MAXHOSTNAMELEN];
  66
  67    if (!(SocketBase = OpenLibrary("bsdsocket.library", 3)))
  68    {
  69       return RETURN_FAIL;
  70    }
  71    if (!(MiamiBase = OpenLibrary("miami.library", 0)))
  72    {
  73       return RETURN_FAIL;
  74    }
  75
  76         sflag = 0;
  77         while ((ch = getopt(argc, argv, "s")) != -1)
  78                 switch (ch) {
  79                 case 's':
  80                         sflag = 1;
  81                         break;
  82                 case '?':
  83                 default:
  84                         usage();
  85                 }
  86         argc -= optind;
  87         argv += optind;
  88
  89 #ifdef ENABLE_SETHOSTNAME
  90         if (argc > 1)
  91 #else
  92         if (argc)
  93 #endif
  94                 usage();
  95 #ifdef ENABLE_SETHOSTNAME
  96         if (*argv) {
  97                 if (sethostname(*argv, (int)strlen(*argv)))
  98                 {
  99 #if !defined(__AROS__)
 100                         err(1, "sethostname");
 101 #endif
 102                 }
 103         } else {
 104 #endif
 105                 if (gethostname(hostname, (int)sizeof(hostname)))
 106                 {
 107 #if !defined(__AROS__)
 108                         err(1, "gethostname");
 109 #endif
 110                 }
 111                 if (sflag) {
 112                         p = strchr(hostname, '.');
 113                         if (p != NULL)
 114                                 *p = '\0';
 115                 }
 116                 (void)printf("%s\n", hostname);
 117 #ifdef ENABLE_SETHOSTNAME
 118         }
 119 #endif
 120         exit(0);
 121 }
 122
 123 void
 124 usage(void)
 125 {
 126 #ifdef ENABLE_SETHOSTNAME
 127         (void)fprintf(stderr, "usage: hostname [-s] [name-of-host]\n");
 128 #else
 129         (void)fprintf(stderr, "usage: hostname [-s]\n");
 130 #endif
 131         exit(1);
 132 }