AppPkg/Applications/Sockets/GetNetByAddr/GetNetByAddr.c

   1 /** @file
   2   Translate the IPv4 address into a network name
   3
   4   Copyright (c) 2011-2012, Intel Corporation. All rights reserved.
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 #include <errno.h>
  10 #include <netdb.h>
  11 #include <stdio.h>
  12 #include <string.h>
  13 #include <Uefi.h>
  14 #include <unistd.h>
  15
  16 #include <Library/DebugLib.h>
  17 #include <Library/UefiLib.h>
  18
  19 #include <sys/socket.h>
  20
  21 /**
  22   Translate the IPv4 address into a network name
  23
  24   @param [in] Argc  The number of arguments
  25   @param [in] Argv  The argument value array
  26
  27   @retval  0        The application exited normally.
  28   @retval  Other    An error occurred.
  29 **/
  30 int
  31 main (
  32   IN int Argc,
  33   IN char **Argv
  34   )
  35 {
  36   UINT32 RemoteAddress[4];
  37   UINT8 IpAddress[4];
  38   struct netent * pNetwork;
  39
  40   //
  41   //  Determine if the IPv4 address is specified
  42   //
  43   if (( 2 != Argc )
  44     || ( 4 != sscanf ( Argv[1],
  45                        "%d.%d.%d.%d",
  46                        &RemoteAddress[0],
  47                        &RemoteAddress[1],
  48                        &RemoteAddress[2],
  49                        &RemoteAddress[3]))
  50     || ( 255 < RemoteAddress[0])
  51     || ( 255 < RemoteAddress[1])
  52     || ( 255 < RemoteAddress[2])
  53     || ( 255 < RemoteAddress[3])) {
  54     Print ( L"%a  <IPv4 Address>\r\n", Argv[0]);
  55   }
  56   else {
  57     //
  58     //  Translate the address into a network name
  59     //
  60     IpAddress[0] = (UINT8)RemoteAddress[0];
  61     IpAddress[1] = (UINT8)RemoteAddress[1];
  62     IpAddress[2] = (UINT8)RemoteAddress[2];
  63     IpAddress[3] = (UINT8)RemoteAddress[3];
  64     pNetwork = getnetbyaddr ( *(uint32_t *)&IpAddress[0], AF_INET );
  65     if ( NULL == pNetwork ) {
  66       Print ( L"ERROR - network not found, errno: %d\r\n", errno );
  67     }
  68     else {
  69       Print ( L"%a: %d.%d.%d.%d, 0x%08x\r\n",
  70               pNetwork->n_name,
  71               IpAddress[0],
  72               IpAddress[1],
  73               IpAddress[2],
  74               IpAddress[3],
  75               pNetwork->n_net );
  76     }
  77   }
  78
  79   //
  80   //  All done
  81   //
  82   return errno;
  83 }