audk/AppPkg/Applications/Sockets/GetHostByName/GetHostByName.c

/** @file
  Translate the host name into an IP address

  Copyright (c) 2011, Intel Corporation
  All rights reserved. This program and the accompanying materials
  are licensed and made available under the terms and conditions of the BSD License
  which accompanies this distribution.  The full text of the license may be found at
  http://opensource.org/licenses/bsd-license.php

  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

**/

#include <errno.h>
#include <netdb.h>
#include <string.h>
#include <Uefi.h>
#include <unistd.h>

#include <Library/DebugLib.h>
#include <Library/UefiLib.h>

#include <sys/socket.h>

char mBuffer[65536];


/**
  Translate the host name into an IP address

  @param [in] Argc  The number of arguments
  @param [in] Argv  The argument value array

  @retval  0        The application exited normally.
  @retval  Other    An error occurred.
**/
int
main (
  IN int Argc,
  IN char **Argv
  )
{
  int AppStatus;
  UINTN Index;
  struct hostent * pHost;
  UINT8 * pIpAddress;
  char ** ppName;

  DEBUG (( DEBUG_INFO,
            "%a starting\r\n",
            Argv[0]));

  //
  //  Determine if the host name is specified
  //
  AppStatus = 0;
  if ( 1 == Argc ) {
    Print ( L"%a  <host name>\r\n", Argv[0]);
  }
  else {
    //
    //  Translate the host name
    //
    pHost = gethostbyname ( Argv[1]);
    if ( NULL == pHost ) {
      Print ( L"ERROR - host not found, errno: %d\r\n", errno );
    }
    else {
      pIpAddress = (UINT8 *)pHost->h_addr;
      Print ( L"%d.%d.%d.%d, Type %d, %a\r\n",
              pIpAddress[0],
              pIpAddress[1],
              pIpAddress[2],
              pIpAddress[3],
              pHost->h_addrtype,
              pHost->h_name );

      //
      //  Display the other addresses
      //
      for ( Index = 1; NULL != pHost->h_addr_list[Index]; Index++ ) {
        pIpAddress = (UINT8 *)pHost->h_addr_list[Index];
        Print ( L"%d.%d.%d.%d\r\n",
                pIpAddress[0],
                pIpAddress[1],
                pIpAddress[2],
                pIpAddress[3]);
      }

      //
      //  Display the list of aliases
      //
      ppName = pHost->h_aliases;
      if (( NULL == ppName ) || ( NULL == *ppName )) {
        Print ( L"No aliases\r\n" );
      }
      else {
        Print ( L"Aliases: " );
        while ( NULL != *ppName ) {
          //
          //  Display the alias
          //
          Print ( L"%a", *ppName );

          //
          //  Set the next alias
          //
          ppName += 1;
          if ( NULL != *ppName ) {
            Print ( L", " );
          }
        }
        Print ( L"\r\n" );
      }
    }
  }

  //
  //  All done
  //
  return errno;
}