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262 lines
10 KiB
262 lines
10 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 "qttylocker_unix_p.h"
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#include "qserialport_unix_p.h"
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#include <QtCore/qfile.h>
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#ifndef Q_OS_MAC
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#if defined (Q_OS_LINUX) && defined (HAVE_LIBUDEV)
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extern "C"
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{
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#include <libudev.h>
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}
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#else
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#include <QtCore/qdir.h>
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#include <QtCore/qstringlist.h>
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#endif
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#endif // Q_OS_MAC
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QT_BEGIN_NAMESPACE
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#ifndef Q_OS_MAC
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#if !(defined (Q_OS_LINUX) && defined (HAVE_LIBUDEV))
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static inline const QStringList& filtersOfDevices()
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{
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static const QStringList deviceFileNameFilterList = QStringList()
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# ifdef Q_OS_LINUX
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<< QLatin1String("ttyS*") // Standart UART 8250 and etc.
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<< QLatin1String("ttyUSB*") // Usb/serial converters PL2303 and etc.
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<< QLatin1String("ttyACM*") // CDC_ACM converters (i.e. Mobile Phones).
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<< QLatin1String("ttyGS*") // Gadget serial device (i.e. Mobile Phones with gadget serial driver).
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<< QLatin1String("ttyMI*") // MOXA pci/serial converters.
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<< QLatin1String("ttyAMA*") // AMBA serial device for embedded platform on ARM (i.e. Raspberry Pi).
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<< QLatin1String("rfcomm*") // Bluetooth serial device.
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<< QLatin1String("ircomm*"); // IrDA serial device.
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# elif defined (Q_OS_FREEBSD)
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<< QLatin1String("cu*");
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# else
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; // Here for other *nix OS.
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# endif
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return deviceFileNameFilterList;
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}
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#endif
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QList<QSerialPortInfo> QSerialPortInfo::availablePorts()
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{
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QList<QSerialPortInfo> serialPortInfoList;
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#if defined (Q_OS_LINUX) && defined (HAVE_LIBUDEV)
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// White list for devices without a parent
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static const QString rfcommDeviceName(QLatin1String("rfcomm"));
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struct ::udev *udev = ::udev_new();
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if (udev) {
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struct ::udev_enumerate *enumerate =
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::udev_enumerate_new(udev);
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if (enumerate) {
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::udev_enumerate_add_match_subsystem(enumerate, "tty");
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::udev_enumerate_scan_devices(enumerate);
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struct ::udev_list_entry *devices =
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::udev_enumerate_get_list_entry(enumerate);
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struct ::udev_list_entry *dev_list_entry;
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udev_list_entry_foreach(dev_list_entry, devices) {
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struct ::udev_device *dev =
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::udev_device_new_from_syspath(udev,
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::udev_list_entry_get_name(dev_list_entry));
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if (dev) {
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QSerialPortInfo serialPortInfo;
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serialPortInfo.d_ptr->device =
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QLatin1String(::udev_device_get_devnode(dev));
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serialPortInfo.d_ptr->portName =
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QLatin1String(::udev_device_get_sysname(dev));
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struct ::udev_device *parentdev = ::udev_device_get_parent(dev);
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bool canAppendToList = true;
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if (parentdev) {
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QLatin1String subsys(::udev_device_get_subsystem(parentdev));
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if (subsys == QLatin1String("usb-serial")
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|| subsys == QLatin1String("usb")) { // USB bus type
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// Append this devices and try get additional information about them.
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serialPortInfo.d_ptr->description = QString(
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QLatin1String(::udev_device_get_property_value(dev,
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"ID_MODEL"))).replace('_', ' ');
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serialPortInfo.d_ptr->manufacturer = QString(
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QLatin1String(::udev_device_get_property_value(dev,
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"ID_VENDOR"))).replace('_', ' ');
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serialPortInfo.d_ptr->vendorIdentifier =
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QString::fromLatin1(::udev_device_get_property_value(dev,
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"ID_VENDOR_ID")).toInt(&serialPortInfo.d_ptr->hasVendorIdentifier, 16);
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serialPortInfo.d_ptr->productIdentifier =
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QString::fromLatin1(::udev_device_get_property_value(dev,
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"ID_MODEL_ID")).toInt(&serialPortInfo.d_ptr->hasProductIdentifier, 16);
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} else if (subsys == QLatin1String("pnp")) { // PNP bus type
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// Append this device.
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// FIXME: How to get additional information about serial devices
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// with this subsystem?
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} else if (subsys == QLatin1String("platform")) { // Platform 'pseudo' bus for legacy device.
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// Skip this devices because this type of subsystem does
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// not include a real physical serial device.
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canAppendToList = false;
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} else { // Others types of subsystems.
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// Append this devices because we believe that any other types of
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// subsystems provide a real serial devices. For example, for devices
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// such as ttyGSx, its driver provide an empty subsystem name, but it
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// devices is a real physical serial devices.
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// FIXME: How to get additional information about serial devices
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// with this subsystems?
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}
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} else { // Devices without a parent
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if (serialPortInfo.d_ptr->portName.startsWith(rfcommDeviceName)) { // Bluetooth device
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bool ok;
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// Check for an unsigned decimal integer at the end of the device name: "rfcomm0", "rfcomm15"
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// devices with negative and invalid numbers in the name are rejected
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int portNumber = serialPortInfo.d_ptr->portName.mid(rfcommDeviceName.length()).toInt(&ok);
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if (!ok || (portNumber < 0) || (portNumber > 255)) {
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canAppendToList = false;
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}
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} else {
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canAppendToList = false;
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}
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}
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if (canAppendToList)
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serialPortInfoList.append(serialPortInfo);
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::udev_device_unref(dev);
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}
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}
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::udev_enumerate_unref(enumerate);
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}
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::udev_unref(udev);
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}
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#elif defined (Q_OS_FREEBSD) && defined (HAVE_LIBUSB)
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// TODO: Implement me.
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#else
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QDir devDir(QLatin1String("/dev"));
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if (devDir.exists()) {
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devDir.setNameFilters(filtersOfDevices());
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devDir.setFilter(QDir::Files | QDir::System | QDir::NoSymLinks);
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QStringList foundDevices; // Found devices list.
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foreach (const QFileInfo &deviceFileInfo, devDir.entryInfoList()) {
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QString deviceFilePath = deviceFileInfo.absoluteFilePath();
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if (!foundDevices.contains(deviceFilePath)) {
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foundDevices.append(deviceFilePath);
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QSerialPortInfo serialPortInfo;
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serialPortInfo.d_ptr->device = deviceFilePath;
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serialPortInfo.d_ptr->portName = QSerialPortPrivate::portNameFromSystemLocation(deviceFilePath);
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// Get description, manufacturer, vendor identifier, product
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// identifier are not supported.
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serialPortInfoList.append(serialPortInfo);
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}
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}
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}
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#endif
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return serialPortInfoList;
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}
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#endif // Q_OS_MAC
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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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bool currentPid = false;
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return QTtyLocker::isLocked(portName().toLocal8Bit().constData(), ¤tPid);
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}
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bool QSerialPortInfo::isValid() const
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{
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QFile f(systemLocation());
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return f.exists();
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}
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QT_END_NAMESPACE
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