text: /**
   * WinPR: Windows Portable Runtime
   * Serial Communication API
   *
   * Copyright 2014 Hewlett-Packard Development Company, L.P.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <stdio.h>
  #include <sys/stat.h>
  
  #ifndef _WIN32
  #include <termios.h>
  #endif
  
  #include <winpr/comm.h>
  #include <winpr/crt.h>
  
  #include "../comm.h"
  
  static BOOL test_SerCxSys(HANDLE hComm)
  {
  	DCB dcb;
  	UCHAR XonChar, XoffChar;
  
  	struct termios currentTermios;
  
  	ZeroMemory(&currentTermios, sizeof(struct termios));
  	if (tcgetattr(((WINPR_COMM*)hComm)->fd, &currentTermios) < 0)
  	{
  		fprintf(stderr, "tcgetattr failure.\n");
  		return FALSE;
  	}
  
  
  	ZeroMemory(&dcb, sizeof(DCB));
  	dcb.DCBlength = sizeof(DCB);
  	if (!GetCommState(hComm, &dcb))
  	{
  		fprintf(stderr, "GetCommState failure, GetLastError(): 0x%0.8x\n", GetLastError());
  		return FALSE;
  	}
  
  	if ((dcb.XonChar == '\0') || (dcb.XoffChar == '\0'))
  	{
  		fprintf(stderr, "test_SerCxSys failure, expected XonChar and XoffChar to be set\n");
  		return FALSE;
  	}
  
  
  	/* retrieve Xon/Xoff chars */
  	if ((dcb.XonChar != currentTermios.c_cc[VSTART]) || (dcb.XoffChar != currentTermios.c_cc[VSTOP]))
  	{
  		fprintf(stderr, "test_SerCxSys failure, could not retrieve XonChar and XoffChar\n");
  		return FALSE;
  	}
  
  	/* swap XonChar/XoffChar */
  
  	XonChar  = dcb.XonChar;
  	XoffChar = dcb.XoffChar;
  	dcb.XonChar  = XoffChar;
  	dcb.XoffChar = XonChar;
  	if (!SetCommState(hComm, &dcb))
  	{
  		fprintf(stderr, "SetCommState failure, GetLastError(): 0x%0.8x\n", GetLastError());
  		return FALSE;
  	}
  
  	ZeroMemory(&dcb, sizeof(DCB));
  	dcb.DCBlength = sizeof(DCB);
  	if (!GetCommState(hComm, &dcb))
  	{
  		fprintf(stderr, "GetCommState failure, GetLastError(): 0x%0.8x\n", GetLastError());
  		return FALSE;
  	}
  
  	if ((dcb.XonChar != XoffChar) || (dcb.XoffChar != XonChar))
  	{
  		fprintf(stderr, "test_SerCxSys, expected XonChar and XoffChar to be swapped\n");
  		return FALSE;
  	}
  
  	/* same XonChar / XoffChar */
  	dcb.XonChar = dcb.XoffChar;
  	if (SetCommState(hComm, &dcb))
  	{
  		fprintf(stderr, "test_SerCxSys failure, SetCommState() was supposed to failed because XonChar and XoffChar are the same\n");
  		return FALSE;
  	}
  	if (GetLastError() != ERROR_INVALID_PARAMETER)
  	{
  		fprintf(stderr, "test_SerCxSys failure, SetCommState() was supposed to failed with GetLastError()=ERROR_INVALID_PARAMETER\n");
  		return FALSE;
  	}
  
  	return TRUE;
  }
  
  
  static BOOL test_SerCx2Sys(HANDLE hComm)
  {
  	DCB dcb;
  
  	ZeroMemory(&dcb, sizeof(DCB));
  	dcb.DCBlength = sizeof(DCB);
  	if (!GetCommState(hComm, &dcb))
  	{
  		fprintf(stderr, "GetCommState failure; GetLastError(): %0.8x\n", GetLastError());
  		return FALSE;
  	}
  
  	if ((dcb.ErrorChar != '\0') || (dcb.EofChar != '\0') || (dcb.EvtChar != '\0') || (dcb.XonChar != '\0') || (dcb.XoffChar != '\0'))
  	{
  		fprintf(stderr, "test_SerCx2Sys failure, expected all characters to be: '\\0'\n");
  		return FALSE;
  	}
  
  	return TRUE;
  }
  
  int TestSerialChars(int argc, char* argv[])
  {
  	struct stat statbuf;
  	BOOL result;
  	HANDLE hComm;
  
  	if (stat("/dev/ttyS0", &statbuf) < 0)
  	{
  		fprintf(stderr, "/dev/ttyS0 not available, making the test to succeed though\n");
  		return EXIT_SUCCESS;
  	}
  
  	result = DefineCommDevice("COM1", "/dev/ttyS0");
  	if (!result)
  	{
  		fprintf(stderr, "DefineCommDevice failure: 0x%x\n", GetLastError());
  		return EXIT_FAILURE;
  	}
  
  	hComm = CreateFile("COM1",
  			GENERIC_READ | GENERIC_WRITE,
  			0, NULL, OPEN_EXISTING, 0, NULL);
  	if (hComm == INVALID_HANDLE_VALUE)
  	{
  		fprintf(stderr, "CreateFileA failure: 0x%x\n", GetLastError());
  		return EXIT_FAILURE;
  	}
  
  	_comm_setServerSerialDriver(hComm, SerialDriverSerCxSys);
  	if (!test_SerCxSys(hComm))
  	{
  		fprintf(stderr, "test_SerCxSys failure\n");
  		return EXIT_FAILURE;
  	}
  
  	_comm_setServerSerialDriver(hComm, SerialDriverSerCx2Sys);
  	if (!test_SerCx2Sys(hComm))
  	{
  		fprintf(stderr, "test_SerCxSys failure\n");
  		return EXIT_FAILURE;
  	}
  
  
  	if (!CloseHandle(hComm))
  	{
  		fprintf(stderr, "CloseHandle failure, GetLastError()=%0.8x\n", GetLastError());
  		return EXIT_FAILURE;
  	}
  
  	return EXIT_SUCCESS;
  }
  