AppPkg/Applications/Sockets/GetNetByAddr/GetNetByAddr.c

   1 /** @file
   2   Translate the IPv4 address into a network name
   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 <stdio.h>
  18 #include <string.h>
  19 #include <Uefi.h>
  20 #include <unistd.h>
  21
  22 #include <Library/DebugLib.h>
  23 #include <Library/UefiLib.h>
  24
  25 #include <sys/socket.h>
  26
  27 /**
  28   Translate the IPv4 address into a network name
  29
  30   @param [in] Argc  The number of arguments
  31   @param [in] Argv  The argument value array
  32
  33   @retval  0        The application exited normally.
  34   @retval  Other    An error occurred.
  35 **/
  36 int
  37 main (
  38   IN int Argc,
  39   IN char **Argv
  40   )
  41 {
  42   UINT32 RemoteAddress[4];
  43   UINT8 IpAddress[4];
  44   struct netent * pNetwork;
  45
  46   //
  47   //  Determine if the IPv4 address is specified
  48   //
  49   if (( 2 != Argc )
  50     || ( 4 != sscanf ( Argv[1],
  51                        "%d.%d.%d.%d",
  52                        &RemoteAddress[0],
  53                        &RemoteAddress[1],
  54                        &RemoteAddress[2],
  55                        &RemoteAddress[3]))
  56     || ( 255 < RemoteAddress[0])
  57     || ( 255 < RemoteAddress[1])
  58     || ( 255 < RemoteAddress[2])
  59     || ( 255 < RemoteAddress[3])) {
  60     Print ( L"%a  <IPv4 Address>\r\n", Argv[0]);
  61   }
  62   else {
  63     //
  64     //  Translate the address into a network name
  65     //
  66     IpAddress[0] = (UINT8)RemoteAddress[0];
  67     IpAddress[1] = (UINT8)RemoteAddress[1];
  68     IpAddress[2] = (UINT8)RemoteAddress[2];
  69     IpAddress[3] = (UINT8)RemoteAddress[3];
  70     pNetwork = getnetbyaddr ( *(uint32_t *)&IpAddress[0], AF_INET );
  71     if ( NULL == pNetwork ) {
  72       Print ( L"ERROR - network not found, errno: %d\r\n", errno );
  73     }
  74     else {
  75       Print ( L"%a: %d.%d.%d.%d, 0x%08x\r\n",
  76               pNetwork->n_name,
  77               IpAddress[0],
  78               IpAddress[1],
  79               IpAddress[2],
  80               IpAddress[3],
  81               pNetwork->n_net );
  82     }
  83   }
  84
  85   //
  86   //  All done
  87   //
  88   return errno;
  89 }