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   SPDX-License-Identifier: BSD-2-Clause-Patent
   6 **/
   7 #include <errno.h>
   8 #include <netdb.h>
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <Uefi.h>
  12 #include <unistd.h>
  13
  14 #include <Library/DebugLib.h>
  15 #include <Library/UefiLib.h>
  16
  17 #include <sys/socket.h>
  18
  19 char mBuffer[65536];
  20
  21
  22 /** Translate the port number into a service 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   int PortNumber;
  37   struct servent * pService;
  38
  39   //  Determine if the service name is specified
  40   if (( 2 != Argc )
  41     || ( 1 != sscanf ( Argv[1], "%d", &PortNumber ))) {
  42     Print ( L"%a  <port number>\r\n", Argv[0]);
  43   }
  44   else {
  45     //  Translate the port number
  46     pService = getservbyport ( htons ( PortNumber ), NULL );
  47     if ( NULL == pService ) {
  48       Print ( L"ERROR - service not found, errno: %d\r\n", errno );
  49     }
  50     else {
  51       Print ( L"%a: %d, %a\r\n",
  52               pService->s_name,
  53               PortNumber,
  54               pService->s_proto );
  55     }
  56   }
  57   //  All done
  58   return errno;
  59 }