TestGetCommState.c

 
#include <stdio.h>
#include <sys/stat.h>
 
#include <winpr/comm.h>
#include <winpr/crt.h>
 
#include "../comm.h"
 
static BOOL test_generic(HANDLE hComm)
{
  DCB dcb = WINPR_C_ARRAY_INIT;
  DCB* pDcb = nullptr;
  BOOL result = 0;
 
  ZeroMemory(&dcb, sizeof(DCB));
  result = GetCommState(hComm, &dcb);
  if (result)
  {
    printf("GetCommState failure, should have returned false because dcb.DCBlength has been "
           "let uninitialized\n");
    return FALSE;
  }
 
  ZeroMemory(&dcb, sizeof(DCB));
  dcb.DCBlength = sizeof(DCB) / 2; /* improper value */
  result = GetCommState(hComm, &dcb);
  if (result)
  {
    printf("GetCommState failure, should have return false because dcb.DCBlength was not "
           "correctly initialized\n");
    return FALSE;
  }
 
  ZeroMemory(&dcb, sizeof(DCB));
  dcb.DCBlength = sizeof(DCB);
  result = GetCommState(hComm, &dcb);
  if (!result)
  {
    printf("GetCommState failure: Ox%x, with adjusted DCBlength\n", GetLastError());
    return FALSE;
  }
 
  pDcb = (DCB*)calloc(2, sizeof(DCB));
  if (!pDcb)
    return FALSE;
  pDcb->DCBlength = sizeof(DCB) * 2;
  result = GetCommState(hComm, pDcb);
  result = result && (pDcb->DCBlength == sizeof(DCB) * 2);
  free(pDcb);
  if (!result)
  {
    printf("GetCommState failure: 0x%x, with bigger DCBlength\n", GetLastError());
    return FALSE;
  }
 
  return TRUE;
}
 
int TestGetCommState(int argc, char* argv[])
{
  struct stat statbuf = WINPR_C_ARRAY_INIT;
  BOOL result = 0;
  HANDLE hComm = nullptr;
 
  if (stat("/dev/ttyS0", &statbuf) < 0)
  {
    (void)fprintf(stderr, "/dev/ttyS0 not available, making the test to succeed though\n");
    return EXIT_SUCCESS;
  }
 
  result = DefineCommDevice("COM1", "/dev/ttyS0");
  if (!result)
  {
    printf("DefineCommDevice failure: 0x%x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  hComm =
      CreateFileA("COM1", GENERIC_READ | GENERIC_WRITE, 0, nullptr, OPEN_EXISTING, 0, nullptr);
 
  if (hComm == INVALID_HANDLE_VALUE)
  {
    printf("CreateFileA failure: 0x%x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  if (!test_generic(hComm))
  {
    printf("test_generic failure (SerialDriverUnknown)\n");
    return EXIT_FAILURE;
  }
 
  _comm_setServerSerialDriver(hComm, SerialDriverSerialSys);
  if (!test_generic(hComm))
  {
    printf("test_generic failure (SerialDriverSerialSys)\n");
    return EXIT_FAILURE;
  }
 
  _comm_setServerSerialDriver(hComm, SerialDriverSerCxSys);
  if (!test_generic(hComm))
  {
    printf("test_generic failure (SerialDriverSerCxSys)\n");
    return EXIT_FAILURE;
  }
 
  _comm_setServerSerialDriver(hComm, SerialDriverSerCx2Sys);
  if (!test_generic(hComm))
  {
    printf("test_generic failure (SerialDriverSerCx2Sys)\n");
    return EXIT_FAILURE;
  }
 
  if (!CloseHandle(hComm))
  {
    (void)fprintf(stderr, "CloseHandle failure, GetLastError()=%08x\n", GetLastError());
    return EXIT_FAILURE;
  }
 
  return EXIT_SUCCESS;
}