com32/samples/resolv.c

   1 /* ----------------------------------------------------------------------- *
   2  *
   3  *   Copyright 2004-2008 H. Peter Anvin - All Rights Reserved
   4  *
   5  *   This program is free software; you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation, Inc., 53 Temple Place Ste 330,
   8  *   Boston MA 02111-1307, USA; either version 2 of the License, or
   9  *   (at your option) any later version; incorporated herein by reference.
  10  *
  11  * ----------------------------------------------------------------------- */
  12
  13 /*
  14  * resolv.c
  15  *
  16  * Resolve an IP address
  17  */
  18
  19 #include <syslinux/pxe_api.h>
  20 #include <string.h>
  21 #include <stdio.h>
  22 #include <console.h>
  23 #include <stdlib.h>
  24 #include <com32.h>
  25
  26 uint32_t resolv(const char *name)
  27 {
  28     return pxe_dns(name);
  29 }
  30
  31 int main(int argc, char *argv[])
  32 {
  33     uint32_t ip;
  34
  35 #if 0
  36         /* this hangs! */
  37     openconsole(&dev_null_r, &dev_stdcon_w);
  38 #else
  39         /* this works */
  40     openconsole(&dev_rawcon_r, &dev_ansiserial_w);
  41 #endif
  42
  43     if (argc < 2) {
  44         fputs("Usage: resolv hostname\n", stderr);
  45         exit(1);
  46     }
  47
  48     ip = resolv(argv[1]);
  49
  50     if (ip) {
  51         printf("%s = %u.%u.%u.%u\n", argv[1],
  52                (ip & 0xff), (ip >> 8) & 0xff,
  53                (ip >> 16) & 0xff, (ip >> 24) & 0xff);
  54     } else {
  55         printf("%s not found\n", argv[1]);
  56     }
  57
  58     return 0;
  59 }