AppPkg/Applications/Sockets/GetHostByAddr/GetHostByAddr.c

   1 /** @file
   2   Translate the port number into a service 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 <arpa\nameser.h>
  23 #include <arpa\nameser_compat.h>
  24
  25 #include <Library/DebugLib.h>
  26 #include <Library/UefiLib.h>
  27
  28 #include <sys/socket.h>
  29
  30 /**
  31   Translate the IP address into a host name
  32
  33   @param [in] Argc  The number of arguments
  34   @param [in] Argv  The argument value array
  35
  36   @retval  0        The application exited normally.
  37   @retval  Other    An error occurred.
  38 **/
  39 int
  40 main (
  41   IN int Argc,
  42   IN char **Argv
  43   )
  44 {
  45   UINTN Index;
  46   UINT8 IpAddress[4];
  47   struct hostent * pHost;
  48   UINT8 * pIpAddress;
  49   char ** ppName;
  50   UINT32 RemoteAddress[4];
  51
  52   //
  53   //  Determine if the IPv4 address is specified
  54   //
  55   if (( 2 != Argc )
  56     || ( 4 != sscanf ( Argv[1],
  57                        "%d.%d.%d.%d",
  58                        &RemoteAddress[0],
  59                        &RemoteAddress[1],
  60                        &RemoteAddress[2],
  61                        &RemoteAddress[3]))
  62     || ( 255 < RemoteAddress[0])
  63     || ( 255 < RemoteAddress[1])
  64     || ( 255 < RemoteAddress[2])
  65     || ( 255 < RemoteAddress[3])) {
  66     Print ( L"%a  <IPv4 Address>\r\n", Argv[0]);
  67   }
  68   else {
  69     //
  70     //  Translate the address into a host name
  71     //
  72     IpAddress[0] = (UINT8)RemoteAddress[0];
  73     IpAddress[1] = (UINT8)RemoteAddress[1];
  74     IpAddress[2] = (UINT8)RemoteAddress[2];
  75     IpAddress[3] = (UINT8)RemoteAddress[3];
  76     pHost = gethostbyaddr ( &IpAddress[0], INADDRSZ, AF_INET );
  77     if ( NULL == pHost ) {
  78       Print ( L"ERROR - host not found, h_errno: %d\r\n", h_errno );
  79     }
  80     else {
  81       pIpAddress = (UINT8 *)pHost->h_addr_list[ 0 ];
  82       Print ( L"%d.%d.%d.%d, %a\r\n",
  83               pIpAddress[0],
  84               pIpAddress[1],
  85               pIpAddress[2],
  86               pIpAddress[3],
  87               pHost->h_name );
  88
  89       //
  90       //  Display the other addresses
  91       //
  92       for ( Index = 1; NULL != pHost->h_addr_list[Index]; Index++ ) {
  93         pIpAddress = (UINT8 *)pHost->h_addr_list[Index];
  94         Print ( L"%d.%d.%d.%d\r\n",
  95                 pIpAddress[0],
  96                 pIpAddress[1],
  97                 pIpAddress[2],
  98                 pIpAddress[3]);
  99       }
 100
 101       //
 102       //  Display the list of aliases
 103       //
 104       ppName = pHost->h_aliases;
 105       if (( NULL == ppName ) || ( NULL == *ppName )) {
 106         Print ( L"No aliases\r\n" );
 107       }
 108       else {
 109         Print ( L"Aliases: " );
 110         while ( NULL != *ppName ) {
 111           //
 112           //  Display the alias
 113           //
 114           Print ( L"%a", *ppName );
 115
 116           //
 117           //  Set the next alias
 118           //
 119           ppName += 1;
 120           if ( NULL != *ppName ) {
 121             Print ( L", " );
 122           }
 123         }
 124         Print ( L"\r\n" );
 125       }
 126     }
 127   }
 128
 129   //
 130   //  All done
 131   //
 132   return errno;
 133 }