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