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- /****************************************************************************
- ** Copyright (c) 2000-2003 Wayne Roth
- ** Copyright (c) 2004-2007 Stefan Sander
- ** Copyright (c) 2007 Michal Policht
- ** Copyright (c) 2008 Brandon Fosdick
- ** Copyright (c) 2009-2010 Liam Staskawicz
- ** Copyright (c) 2011 Debao Zhang
- ** Copyright (c) 2012 Doug Brown
- ** All right reserved.
- ** Web: http://code.google.com/p/qextserialport/
- **
- ** Permission is hereby granted, free of charge, to any person obtaining
- ** a copy of this software and associated documentation files (the
- ** "Software"), to deal in the Software without restriction, including
- ** without limitation the rights to use, copy, modify, merge, publish,
- ** distribute, sublicense, and/or sell copies of the Software, and to
- ** permit persons to whom the Software is furnished to do so, subject to
- ** the following conditions:
- **
- ** The above copyright notice and this permission notice shall be
- ** included in all copies or substantial portions of the Software.
- **
- ** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- ** NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
- ** LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
- ** OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
- ** WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- **
- ****************************************************************************/
-
- #include "qextserialenumerator.h"
- #include "qextserialenumerator_p.h"
- #include <QtCore/QDebug>
- #include <QtCore/QStringList>
- #include <QtCore/QDir>
-
- void QextSerialEnumeratorPrivate::init_sys()
- {
- #ifndef QESP_NO_UDEV
- monitor = NULL;
- notifierFd = -1;
- notifier = NULL;
-
- udev = udev_new();
- if (!udev)
- qCritical() << "Unable to initialize udev notifications";
- #endif
- }
-
- void QextSerialEnumeratorPrivate::destroy_sys()
- {
- #ifndef QESP_NO_UDEV
- if (notifier) {
- notifier->setEnabled(false);
- delete notifier;
- }
-
- if (monitor)
- udev_monitor_unref(monitor);
-
- if (udev)
- udev_unref(udev);
- #endif
- }
-
- #ifndef QESP_NO_UDEV
- static QextPortInfo portInfoFromDevice(struct udev_device *dev)
- {
- QString vendor = QString::fromLatin1(udev_device_get_property_value(dev, "ID_VENDOR_ID"));
- QString product = QString::fromLatin1(udev_device_get_property_value(dev, "ID_MODEL_ID"));
-
- QextPortInfo pi;
- pi.vendorID = vendor.toInt(0, 16);
- pi.productID = product.toInt(0, 16);
- pi.portName = QString::fromLatin1(udev_device_get_devnode(dev));
- pi.physName = pi.portName;
-
- return pi;
- }
- #endif
-
- QList<QextPortInfo> QextSerialEnumeratorPrivate::getPorts_sys()
- {
- QList<QextPortInfo> infoList;
- #ifndef QESP_NO_UDEV
- struct udev *ud = udev_new();
- if (!ud) {
- qCritical() << "Unable to enumerate ports because udev is not initialized.";
- return infoList;
- }
-
- struct udev_enumerate *enumerate = udev_enumerate_new(ud);
- udev_enumerate_add_match_subsystem(enumerate, "tty");
- udev_enumerate_scan_devices(enumerate);
- struct udev_list_entry *list = udev_enumerate_get_list_entry(enumerate);
- struct udev_list_entry *entry;
- udev_list_entry_foreach(entry, list) {
- const char *path;
- struct udev_device *dev;
-
- // Have to grab the actual udev device here...
- path = udev_list_entry_get_name(entry);
- dev = udev_device_new_from_syspath(ud, path);
-
- infoList.append(portInfoFromDevice(dev));
-
- // Done with this device
- udev_device_unref(dev);
- }
- // Done with the list and this udev
- udev_enumerate_unref(enumerate);
- udev_unref(ud);
- #else
- QStringList portNamePrefixes, portNameList;
- portNamePrefixes << QLatin1String("ttyS*"); // list normal serial ports first
-
- QDir dir(QLatin1String("/dev"));
- portNameList = dir.entryList(portNamePrefixes, (QDir::System | QDir::Files), QDir::Name);
-
- // remove the values which are not serial ports for e.g. /dev/ttysa
- for (int i = 0; i < portNameList.size(); i++) {
- bool ok;
- QString current = portNameList.at(i);
- // remove the ttyS part, and check, if the other part is a number
- current.remove(0,4).toInt(&ok, 10);
- if (!ok) {
- portNameList.removeAt(i);
- i--;
- }
- }
-
- // get the non standard serial ports names
- // (USB-serial, bluetooth-serial, 18F PICs, and so on)
- // if you know an other name prefix for serial ports please let us know
- portNamePrefixes.clear();
- portNamePrefixes << QLatin1String("ttyACM*") << QLatin1String("ttyUSB*") << QLatin1String("rfcomm*") << QLatin1String("tnt*");
- portNameList += dir.entryList(portNamePrefixes, (QDir::System | QDir::Files), QDir::Name);
-
- foreach (QString str , portNameList) {
- QextPortInfo inf;
- inf.physName = QLatin1String("/dev/")+str;
- inf.portName = str;
-
- if (str.contains(QLatin1String("ttyS"))) {
- inf.friendName = QLatin1String("Serial port ")+str.remove(0, 4);
- }
- else if (str.contains(QLatin1String("ttyUSB"))) {
- inf.friendName = QLatin1String("USB-serial adapter ")+str.remove(0, 6);
- }
- else if (str.contains(QLatin1String("rfcomm"))) {
- inf.friendName = QLatin1String("Bluetooth-serial adapter ")+str.remove(0, 6);
- }
- inf.enumName = QLatin1String("/dev"); // is there a more helpful name for this?
- infoList.append(inf);
- }
- #endif
-
- return infoList;
- }
-
- bool QextSerialEnumeratorPrivate::setUpNotifications_sys(bool setup)
- {
- Q_UNUSED(setup);
- #ifndef QESP_NO_UDEV
- Q_Q(QextSerialEnumerator);
- if (!udev) {
- qCritical() << "Unable to initialize notifications because udev is not initialized.";
- return false;
- }
-
- // Emit signals immediately for devices already connected (Windows version seems to behave
- // this way)
- foreach (QextPortInfo i, getPorts_sys())
- Q_EMIT q->deviceDiscovered(i);
-
- // Look for tty devices from udev.
- monitor = udev_monitor_new_from_netlink(udev, "udev");
- udev_monitor_filter_add_match_subsystem_devtype(monitor, "tty", NULL);
- udev_monitor_enable_receiving(monitor);
- notifierFd = udev_monitor_get_fd(monitor);
- notifier = new QSocketNotifier(notifierFd, QSocketNotifier::Read);
- q->connect(notifier, SIGNAL(activated(int)), q, SLOT(_q_deviceEvent()));
- notifier->setEnabled(true);
-
- return true;
- #else
- return false;
- #endif
- }
-
- #ifndef QESP_NO_UDEV
- void QextSerialEnumeratorPrivate::_q_deviceEvent()
- {
- Q_Q(QextSerialEnumerator);
- struct udev_device *dev = udev_monitor_receive_device(monitor);
- if (dev) {
- QextPortInfo pi = portInfoFromDevice(dev);
- QLatin1String action(udev_device_get_action(dev));
-
- if (action == QLatin1String("add"))
- Q_EMIT q->deviceDiscovered(pi);
- else if (action == QLatin1String("remove"))
- Q_EMIT q->deviceRemoved(pi);
-
- udev_device_unref(dev);
- }
- }
- #endif
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