AppPkg/Applications/Sockets/GetServByPort/GetServByPort.c

   1 /** @file
   2   Translate the port number into a service name
   3
   4   Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials are licensed and made available under
   6   the terms and conditions of the BSD License that accompanies this distribution.
   7   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 #include <errno.h>
  14 #include <netdb.h>
  15 #include <stdio.h>
  16 #include <string.h>
  17 #include <Uefi.h>
  18 #include <unistd.h>
  19
  20 #include <Library/DebugLib.h>
  21 #include <Library/UefiLib.h>
  22
  23 #include <sys/socket.h>
  24
  25 char mBuffer[65536];
  26
  27
  28 /** Translate the port number into a service 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   int PortNumber;
  43   struct servent * pService;
  44
  45   //  Determine if the service name is specified
  46   if (( 2 != Argc )
  47     || ( 1 != sscanf ( Argv[1], "%d", &PortNumber ))) {
  48     Print ( L"%a  <port number>\r\n", Argv[0]);
  49   }
  50   else {
  51     //  Translate the port number
  52     pService = getservbyport ( htons ( PortNumber ), NULL );
  53     if ( NULL == pService ) {
  54       Print ( L"ERROR - service not found, errno: %d\r\n", errno );
  55     }
  56     else {
  57       Print ( L"%a: %d, %a\r\n",
  58               pService->s_name,
  59               PortNumber,
  60               pService->s_proto );
  61     }
  62   }
  63   //  All done
  64   return errno;
  65 }