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///////////////////////////////////////////////////////////////////////////////
// BOSSA
//
// Copyright (c) 2011-2018, ShumaTech
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the <organization> nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
///////////////////////////////////////////////////////////////////////////////
#include "WinPortFactory.h"
#include "WinSerialPort.h"
#include <vector>
#define USB_DEVICE_NAME "\\Device\\USB"
WinPortFactory::WinPortFactory() :
_devInfo(INVALID_HANDLE_VALUE), _cfgMgr(NULL), _devNode(NULL), _devNum(0)
{
}
WinPortFactory::~WinPortFactory()
{
cleanup();
}
SerialPort::Ptr
WinPortFactory::create(const std::string& name)
{
bool isUsb = false;
char szNtDeviceName[MAX_PATH];
if (QueryDosDevice(name.c_str(), szNtDeviceName, MAX_PATH))
{
if (strncmp(szNtDeviceName, USB_DEVICE_NAME, sizeof(USB_DEVICE_NAME) - 1) == 0)
{
isUsb = true;
}
}
return create(name, isUsb);
}
SerialPort::Ptr
WinPortFactory::create(const std::string& name, bool isUsb)
{
return SerialPort::Ptr(new WinSerialPort(name, isUsb));
}
void
WinPortFactory::cleanup()
{
_devNum = 0;
_devNode = NULL;
if (_cfgMgr == NULL)
{
FreeLibrary(_cfgMgr);
_cfgMgr = NULL;
}
if (_devInfo != INVALID_HANDLE_VALUE)
{
SetupDiDestroyDeviceInfoList(_devInfo);
_devInfo = INVALID_HANDLE_VALUE;
}
}
std::string
WinPortFactory::error()
{
cleanup();
return end();
}
std::string
WinPortFactory::begin()
{
DWORD size = 0;
if (_devInfo != INVALID_HANDLE_VALUE)
cleanup();
SetupDiClassGuidsFromNameA("Ports", 0, 0, &size);
if (size < 1)
return error();
std::vector<GUID> guids(size);
if (!SetupDiClassGuidsFromNameA("Ports", guids.data(), size * sizeof(GUID), &size))
{
return error();
}
_devInfo = SetupDiGetClassDevs(guids.data(), NULL, NULL, DIGCF_PRESENT);
if(_devInfo == INVALID_HANDLE_VALUE)
return error();
_cfgMgr = LoadLibrary("cfgmgr32");
if (!_cfgMgr)
return error();
_devNode = (CM_Open_DevNode_Key) GetProcAddress(_cfgMgr, "CM_Open_DevNode_Key");
if (!_devNode)
return error();
return next();
}
std::string
WinPortFactory::end()
{
return std::string();
}
std::string
WinPortFactory::next()
{
int rc;
BYTE devName[16];
SP_DEVINFO_DATA devData;
HKEY devKey;
DWORD len;
if (_devInfo == INVALID_HANDLE_VALUE)
return end();
while (1)
{
devData.cbSize = sizeof(SP_DEVINFO_DATA);
if (!SetupDiEnumDeviceInfo(_devInfo, _devNum, &devData))
return error();
rc = _devNode(devData.DevInst,
KEY_QUERY_VALUE,
0,
1,
&devKey,
0);
if (rc != ERROR_SUCCESS)
return error();
len = sizeof(devName);
rc = RegQueryValueEx(devKey,
"portname",
NULL,
NULL,
devName,
&len);
RegCloseKey(devKey);
if (rc != ERROR_SUCCESS)
return error();
_devNum++;
if (strncmp("COM", (char*) devName, 3) == 0)
break;
}
return std::string((char*) devName, len);
}
std::string
WinPortFactory::def()
{
return begin();
}