AppPkg/Applications/Sockets/GetHostByDns/GetHostByDns.c

   1 /** @file
   2   Translate the host name into an IP address
   3
   4   Copyright (c) 2011, Intel Corporation
   5   All rights reserved. This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include <errno.h>
  16 #include <netdb.h>
  17 #include <string.h>
  18 #include <Uefi.h>
  19 #include <unistd.h>
  20
  21 #include <Library/DebugLib.h>
  22 #include <Library/UefiLib.h>
  23
  24 #include <sys/socket.h>
  25
  26 struct hostent * _gethostbydnsname (const char *, int);
  27
  28 char mBuffer[65536];
  29
  30
  31 /**
  32   Translate the host name into an IP address
  33
  34   @param [in] Argc  The number of arguments
  35   @param [in] Argv  The argument value array
  36
  37   @retval  0        The application exited normally.
  38   @retval  Other    An error occurred.
  39 **/
  40 int
  41 main (
  42   IN int Argc,
  43   IN char **Argv
  44   )
  45 {
  46   int AppStatus;
  47   UINT8 * pIpAddress;
  48   struct hostent * pHost;
  49
  50   DEBUG (( DEBUG_INFO,
  51             "%a starting\r\n",
  52             Argv[0]));
  53
  54   //
  55   //  Determine if the host name is specified
  56   //
  57   AppStatus = 0;
  58   if ( 1 == Argc ) {
  59     Print ( L"%a  <host name>\r\n", Argv[0]);
  60   }
  61   else {
  62     //
  63     //  Translate the host name
  64     //
  65     pHost = _gethostbydnsname ( Argv[1], AF_INET );
  66     if ( NULL == pHost ) {
  67       Print ( L"ERROR - host not found, h_errno: %d\r\n", h_errno );
  68     }
  69     else {
  70       pIpAddress = (UINT8 *)pHost->h_addr;
  71       Print ( L"%a: Type %d, %d.%d.%d.%d\r\n",
  72               pHost->h_name,
  73               pHost->h_addrtype,
  74               pIpAddress[0],
  75               pIpAddress[1],
  76               pIpAddress[2],
  77               pIpAddress[3]);
  78     }
  79   }
  80
  81   //
  82   //  All done
  83   //
  84   return errno;
  85 }