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/****************************************************************************
**
** Copyright (C) 2011-2012 Denis Shienkov <denis.shienkov@gmail.com>
** Copyright (C) 2011 Sergey Belyashov <Sergey.Belyashov@gmail.com>
** Copyright (C) 2012 Laszlo Papp <lpapp@kde.org>
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSerialPort module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qserialportinfo.h"
#include "qserialportinfo_p.h"
#include "qserialport_win_p.h"
#ifndef Q_OS_WINCE
#include <initguid.h>
#include <setupapi.h>
#endif
#include <QtCore/qvariant.h>
#include <QtCore/qstringlist.h>
QT_BEGIN_NAMESPACE
#ifndef Q_OS_WINCE
static const GUID guidsArray[] =
{
// Windows Ports Class GUID
{ 0x4D36E978, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18 } },
// Virtual Ports Class GUID (i.e. com0com and etc)
{ 0xDF799E12, 0x3C56, 0x421B, { 0xB2, 0x98, 0xB6, 0xD3, 0x64, 0x2B, 0xC8, 0x78 } },
// Windows Modems Class GUID
{ 0x4D36E96D, 0xE325, 0x11CE, { 0xBF, 0xC1, 0x08, 0x00, 0x2B, 0xE1, 0x03, 0x18 } },
// Eltima Virtual Serial Port Driver v4 GUID
{ 0xCC0EF009, 0xB820, 0x42F4, { 0x95, 0xA9, 0x9B, 0xFA, 0x6A, 0x5A, 0xB7, 0xAB } },
// Advanced Virtual COM Port GUID
{ 0x9341CD95, 0x4371, 0x4A37, { 0xA5, 0xAF, 0xFD, 0xB0, 0xA9, 0xD1, 0x96, 0x31 } },
};
static QVariant deviceRegistryProperty(HDEVINFO deviceInfoSet,
PSP_DEVINFO_DATA deviceInfoData,
DWORD property)
{
DWORD dataType = 0;
DWORD dataSize = 0;
::SetupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData,
property, &dataType, NULL, 0, &dataSize);
QByteArray data(dataSize, 0);
if (!::SetupDiGetDeviceRegistryProperty(deviceInfoSet, deviceInfoData, property, NULL,
reinterpret_cast<unsigned char*>(data.data()),
dataSize, NULL)
|| !dataSize) {
return QVariant();
}
switch (dataType) {
case REG_EXPAND_SZ:
case REG_SZ: {
return QVariant(QString::fromWCharArray(reinterpret_cast<const wchar_t *>(data.constData())));
}
case REG_MULTI_SZ: {
QStringList list;
int i = 0;
forever {
QString s = QString::fromWCharArray(reinterpret_cast<const wchar_t *>(data.constData()) + i);
i += s.length() + 1;
if (s.isEmpty())
break;
list.append(s);
}
return QVariant(list);
}
default:
break;
}
return QVariant();
}
static QString devicePortName(HDEVINFO deviceInfoSet, PSP_DEVINFO_DATA deviceInfoData)
{
static const wchar_t portKeyName[] = L"PortName";
const HKEY key = ::SetupDiOpenDevRegKey(deviceInfoSet, deviceInfoData, DICS_FLAG_GLOBAL,
0, DIREG_DEV, KEY_READ);
if (key == INVALID_HANDLE_VALUE)
return QString();
DWORD dataSize;
if (::RegQueryValueEx(key, portKeyName, NULL, NULL, NULL, &dataSize) != ERROR_SUCCESS) {
::RegCloseKey(key);
return QString();
}
QByteArray data(dataSize, 0);
if (::RegQueryValueEx(key, portKeyName, NULL, NULL,
reinterpret_cast<unsigned char *>(data.data()), &dataSize) != ERROR_SUCCESS) {
::RegCloseKey(key);
return QString();
}
::RegCloseKey(key);
return QString::fromWCharArray(((const wchar_t *)data.constData()));
}
QList<QSerialPortInfo> QSerialPortInfo::availablePorts()
{
static const QString vendorIdentifierPrefix(QLatin1String("VID_"));
static const int vendorIdentifierSize = 4;
static const QString productIdentifierPrefix(QLatin1String("PID_"));
static const int productIdentifierSize = 4;
QList<QSerialPortInfo> serialPortInfoList;
static const int guidCount = sizeof(guidsArray)/sizeof(guidsArray[0]);
for (int i = 0; i < guidCount; ++i) {
const HDEVINFO deviceInfoSet = ::SetupDiGetClassDevs(&guidsArray[i], NULL, 0, DIGCF_PRESENT);
if (deviceInfoSet == INVALID_HANDLE_VALUE)
return serialPortInfoList;
SP_DEVINFO_DATA deviceInfoData;
::memset(&deviceInfoData, 0, sizeof(deviceInfoData));
deviceInfoData.cbSize = sizeof(deviceInfoData);
DWORD index = 0;
while (::SetupDiEnumDeviceInfo(deviceInfoSet, index++, &deviceInfoData)) {
QSerialPortInfo serialPortInfo;
QString s = devicePortName(deviceInfoSet, &deviceInfoData);
if (s.isEmpty() || s.contains(QLatin1String("LPT")))
continue;
serialPortInfo.d_ptr->portName = s;
serialPortInfo.d_ptr->device = QSerialPortPrivate::portNameToSystemLocation(s);
serialPortInfo.d_ptr->description =
deviceRegistryProperty(deviceInfoSet, &deviceInfoData, SPDRP_DEVICEDESC).toString();
serialPortInfo.d_ptr->manufacturer =
deviceRegistryProperty(deviceInfoSet, &deviceInfoData, SPDRP_MFG).toString();
s = deviceRegistryProperty(deviceInfoSet, &deviceInfoData, SPDRP_HARDWAREID).toStringList().first().toUpper();
int index = s.indexOf(vendorIdentifierPrefix);
if (index != -1)
serialPortInfo.d_ptr->vendorIdentifier = s.mid(index + vendorIdentifierPrefix.size(), vendorIdentifierSize)
.toInt(&serialPortInfo.d_ptr->hasVendorIdentifier, 16);
index = s.indexOf(productIdentifierPrefix);
if (index != -1)
serialPortInfo.d_ptr->productIdentifier = s.mid(index + productIdentifierPrefix.size(), productIdentifierSize)
.toInt(&serialPortInfo.d_ptr->hasProductIdentifier, 16);
serialPortInfoList.append(serialPortInfo);
}
::SetupDiDestroyDeviceInfoList(deviceInfoSet);
}
return serialPortInfoList;
}
#endif
// common part
QList<qint32> QSerialPortInfo::standardBaudRates()
{
return QSerialPortPrivate::standardBaudRates();
}
bool QSerialPortInfo::isBusy() const
{
const HANDLE descriptor = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (descriptor == INVALID_HANDLE_VALUE) {
if (::GetLastError() == ERROR_ACCESS_DENIED)
return true;
} else {
::CloseHandle(descriptor);
}
return false;
}
bool QSerialPortInfo::isValid() const
{
const HANDLE descriptor = ::CreateFile(reinterpret_cast<const wchar_t*>(systemLocation().utf16()),
GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, 0, NULL);
if (descriptor == INVALID_HANDLE_VALUE) {
if (::GetLastError() != ERROR_ACCESS_DENIED)
return false;
} else {
::CloseHandle(descriptor);
}
return true;
}
QT_END_NAMESPACE
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