AppPkg/Applications/Sockets/GetServByPort/GetServByPort.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 <Library/DebugLib.h>
  23 #include <Library/UefiLib.h>
  24
  25 #include <sys/socket.h>
  26
  27 char mBuffer [65536];
  28
  29
  30 /**
  31   Translate the port number into a service 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   int AppStatus;
  46   int PortNumber;
  47   struct servent * pService;
  48
  49   //
  50   //  Determine if the service name is specified
  51   //
  52   AppStatus = 0;
  53   if (( 2 != Argc )
  54     || ( 1 != sscanf ( Argv[1], "%d", &PortNumber ))) {
  55     Print ( L"%a  <port number>\r\n", Argv[0]);
  56   }
  57   else {
  58     //
  59     //  Translate the port number
  60     //
  61     pService = getservbyport ( htons ( PortNumber ), NULL );
  62     if ( NULL == pService ) {
  63       Print ( L"ERROR - service not found, errno: %d\r\n", errno );
  64     }
  65     else {
  66       Print ( L"%a: %d, %a\r\n",
  67               pService->s_name,
  68               PortNumber,
  69               pService->s_proto );
  70     }
  71   }
  72
  73   //
  74   //  All done
  75   //
  76   return errno;
  77 }