| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtNfc 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 |
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| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/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 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qnearfieldtarget_emulator_p.h" |
| #include "qnearfieldtarget_p.h" |
| |
| #include <QtCore/QByteArray> |
| #include <QtCore/QCoreApplication> |
| #include <QtCore/QDateTime> |
| #include <QtCore/QDirIterator> |
| #include <QtCore/QMutex> |
| #include <QtCore/QSettings> |
| |
| QT_BEGIN_NAMESPACE |
| |
| static QMutex tagMutex; |
| static QMap<TagBase *, bool> tagMap; |
| |
| Q_GLOBAL_STATIC(TagActivator, globalTagActivator); |
| |
| TagType1::TagType1(TagBase *tag, QObject *parent) |
| : QNearFieldTagType1(parent), m_tag(tag) |
| { |
| } |
| |
| TagType1::~TagType1() |
| { |
| } |
| |
| QByteArray TagType1::uid() const |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| return m_tag->uid(); |
| } |
| |
| QNearFieldTarget::AccessMethods TagType1::accessMethods() const |
| { |
| return NdefAccess | TagTypeSpecificAccess; |
| } |
| |
| QNearFieldTarget::RequestId TagType1::sendCommand(const QByteArray &command) |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| RequestId id(new RequestIdPrivate); |
| |
| // tag not in proximity |
| if (!tagMap.value(m_tag)) { |
| reportError(QNearFieldTarget::TargetOutOfRangeError, id); |
| return id; |
| } |
| |
| quint16 crc = qChecksum(command.constData(), command.length(), Qt::ChecksumItuV41); |
| |
| QByteArray response = m_tag->processCommand(command + char(crc & 0xff) + char(crc >> 8)); |
| |
| if (response.isEmpty()) { |
| reportError(QNearFieldTarget::NoResponseError, id); |
| return id; |
| } |
| |
| // check crc |
| if (qChecksum(response.constData(), response.length(), Qt::ChecksumItuV41) != 0) { |
| reportError(QNearFieldTarget::ChecksumMismatchError, id); |
| return id; |
| } |
| |
| response.chop(2); |
| |
| QMetaObject::invokeMethod(this, "handleResponse", Qt::QueuedConnection, |
| Q_ARG(QNearFieldTarget::RequestId, id), Q_ARG(QByteArray, response)); |
| |
| return id; |
| } |
| |
| bool TagType1::waitForRequestCompleted(const RequestId &id, int msecs) |
| { |
| QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); |
| |
| return QNearFieldTagType1::waitForRequestCompleted(id, msecs); |
| } |
| |
| |
| TagType2::TagType2(TagBase *tag, QObject *parent) |
| : QNearFieldTagType2(parent), m_tag(tag) |
| { |
| } |
| |
| TagType2::~TagType2() |
| { |
| } |
| |
| QByteArray TagType2::uid() const |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| return m_tag->uid(); |
| } |
| |
| QNearFieldTarget::AccessMethods TagType2::accessMethods() const |
| { |
| return NdefAccess | TagTypeSpecificAccess; |
| } |
| |
| QNearFieldTarget::RequestId TagType2::sendCommand(const QByteArray &command) |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| RequestId id(new RequestIdPrivate); |
| |
| // tag not in proximity |
| if (!tagMap.value(m_tag)) { |
| reportError(QNearFieldTarget::TargetOutOfRangeError, id); |
| return id; |
| } |
| |
| quint16 crc = qChecksum(command.constData(), command.length(), Qt::ChecksumItuV41); |
| |
| QByteArray response = m_tag->processCommand(command + char(crc & 0xff) + char(crc >> 8)); |
| |
| if (response.isEmpty()) |
| return id; |
| |
| if (response.length() > 1) { |
| // check crc |
| if (qChecksum(response.constData(), response.length(), Qt::ChecksumItuV41) != 0) { |
| reportError(QNearFieldTarget::ChecksumMismatchError, id); |
| return id; |
| } |
| |
| response.chop(2); |
| } |
| |
| QMetaObject::invokeMethod(this, "handleResponse", Qt::QueuedConnection, |
| Q_ARG(QNearFieldTarget::RequestId, id), Q_ARG(QByteArray, response)); |
| |
| return id; |
| } |
| |
| bool TagType2::waitForRequestCompleted(const RequestId &id, int msecs) |
| { |
| QCoreApplication::sendPostedEvents(this, QEvent::MetaCall); |
| |
| return QNearFieldTagType2::waitForRequestCompleted(id, msecs); |
| } |
| |
| |
| TagActivator::TagActivator() |
| : timerId(-1) |
| { |
| qRegisterMetaType<QNearFieldTarget::Error>(); |
| } |
| |
| TagActivator::~TagActivator() |
| { |
| QMutexLocker locker(&tagMutex); |
| qDeleteAll(tagMap.keys()); |
| tagMap.clear(); |
| } |
| |
| void TagActivator::initialize() |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| if (!tagMap.isEmpty()) |
| return; |
| |
| #ifndef BUILTIN_TESTDATA |
| QDirIterator nfcTargets(QDir::currentPath(), QStringList(QStringLiteral("*.nfc")), QDir::Files); |
| #else |
| QDirIterator nfcTargets(":/nfcdata", QStringList(QStringLiteral("*.nfc")), QDir::Files); |
| #endif |
| while (nfcTargets.hasNext()) { |
| const QString targetFilename = nfcTargets.next(); |
| |
| QSettings target(targetFilename, QSettings::IniFormat); |
| |
| target.beginGroup(QStringLiteral("Target")); |
| |
| const QString tagType = target.value(QStringLiteral("Type")).toString(); |
| |
| target.endGroup(); |
| |
| if (tagType == QLatin1String("TagType1")) { |
| NfcTagType1 *tag = new NfcTagType1; |
| tag->load(&target); |
| |
| tagMap.insert(tag, false); |
| } else if (tagType == QLatin1String("TagType2")) { |
| NfcTagType2 *tag = new NfcTagType2; |
| tag->load(&target); |
| |
| tagMap.insert(tag, false); |
| } else { |
| qWarning("Unknown tag type %s\n", qPrintable(tagType)); |
| } |
| } |
| |
| m_current = tagMap.end(); |
| |
| timerId = startTimer(1000); |
| } |
| |
| void TagActivator::reset() |
| { |
| QMutexLocker locker(&tagMutex); |
| |
| killTimer(timerId); |
| timerId = -1; |
| |
| qDeleteAll(tagMap.keys()); |
| tagMap.clear(); |
| } |
| |
| TagActivator *TagActivator::instance() |
| { |
| return globalTagActivator(); |
| } |
| |
| void TagActivator::timerEvent(QTimerEvent *e) |
| { |
| Q_UNUSED(e); |
| |
| tagMutex.lock(); |
| |
| if (m_current != tagMap.end()) { |
| if (m_current.key()->lastAccessTime() + 1500 > QDateTime::currentMSecsSinceEpoch()) { |
| tagMutex.unlock(); |
| return; |
| } |
| |
| *m_current = false; |
| |
| TagBase *tag = m_current.key(); |
| |
| tagMutex.unlock(); |
| emit tagDeactivated(tag); |
| tagMutex.lock(); |
| } |
| |
| if (m_current != tagMap.end()) |
| ++m_current; |
| |
| if (m_current == tagMap.end()) |
| m_current = tagMap.begin(); |
| |
| if (m_current != tagMap.end()) { |
| *m_current = true; |
| |
| TagBase *tag = m_current.key(); |
| |
| tagMutex.unlock(); |
| emit tagActivated(tag); |
| tagMutex.lock(); |
| } |
| |
| tagMutex.unlock(); |
| } |
| |
| QT_END_NAMESPACE |