| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 Centria research and development |
| ** 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 |
| ** a written agreement between you and The Qt Company. For licensing terms |
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| ** 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 "qnearfieldmanager_android_p.h" |
| #include "qnearfieldtarget_android_p.h" |
| |
| #include "qndeffilter.h" |
| #include "qndefmessage.h" |
| #include "qndefrecord.h" |
| #include "qbytearray.h" |
| #include "qcoreapplication.h" |
| #include "qdebug.h" |
| #include "qlist.h" |
| |
| #include <QScopedPointer> |
| #include <QtCore/QMetaType> |
| #include <QtCore/QMetaMethod> |
| #include <QtCore/private/qjnihelpers_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| Q_GLOBAL_STATIC(QAndroidJniObject, broadcastReceiver) |
| Q_GLOBAL_STATIC(QList<QNearFieldManagerPrivateImpl *>, broadcastListener) |
| |
| extern "C" |
| { |
| JNIEXPORT void JNICALL Java_org_qtproject_qt5_android_nfc_QtNfcBroadcastReceiver_jniOnReceive( |
| JNIEnv */*env*/, jobject /*javaObject*/, jint state) |
| { |
| QNearFieldManager::AdapterState adapterState = static_cast<QNearFieldManager::AdapterState>((int) state); |
| |
| for (const auto listener : qAsConst(*broadcastListener)) { |
| Q_EMIT listener->adapterStateChanged(adapterState); |
| } |
| } |
| } |
| |
| QNearFieldManagerPrivateImpl::QNearFieldManagerPrivateImpl() : |
| m_detecting(false), m_handlerID(0) |
| { |
| qRegisterMetaType<QAndroidJniObject>("QAndroidJniObject"); |
| qRegisterMetaType<QNdefMessage>("QNdefMessage"); |
| |
| if (!broadcastReceiver->isValid()) { |
| *broadcastReceiver = QAndroidJniObject("org/qtproject/qt5/android/nfc/QtNfcBroadcastReceiver", |
| "(Landroid/content/Context;)V", QtAndroidPrivate::context()); |
| } |
| broadcastListener->append(this); |
| |
| connect(this, &QNearFieldManagerPrivateImpl::targetDetected, this, &QNearFieldManagerPrivateImpl::handlerTargetDetected); |
| connect(this, &QNearFieldManagerPrivateImpl::targetLost, this, &QNearFieldManagerPrivateImpl::handlerTargetLost); |
| } |
| |
| QNearFieldManagerPrivateImpl::~QNearFieldManagerPrivateImpl() |
| { |
| broadcastListener->removeOne(this); |
| if (broadcastListener->isEmpty()) { |
| broadcastReceiver->callMethod<void>("unregisterReceiver"); |
| *broadcastReceiver = QAndroidJniObject(); |
| } |
| } |
| |
| void QNearFieldManagerPrivateImpl::handlerTargetDetected(QNearFieldTarget *target) |
| { |
| if (ndefMessageHandlers.count() == 0 && ndefFilterHandlers.count() == 0) // if no handler is registered |
| return; |
| if (target->hasNdefMessage()) { |
| connect(reinterpret_cast<NearFieldTarget *>(target), &NearFieldTarget::ndefMessageRead, |
| this, &QNearFieldManagerPrivateImpl::handlerNdefMessageRead); |
| connect(target, &QNearFieldTarget::requestCompleted, |
| this, &QNearFieldManagerPrivateImpl::handlerRequestCompleted); |
| connect(target, &QNearFieldTarget::error, |
| this, &QNearFieldManagerPrivateImpl::handlerError); |
| |
| QNearFieldTarget::RequestId id = target->readNdefMessages(); |
| m_idToTarget.insert(id, target); |
| } |
| } |
| |
| void QNearFieldManagerPrivateImpl::handlerTargetLost(QNearFieldTarget *target) |
| { |
| disconnect(reinterpret_cast<NearFieldTarget *>(target), &NearFieldTarget::ndefMessageRead, |
| this, &QNearFieldManagerPrivateImpl::handlerNdefMessageRead); |
| disconnect(target, &QNearFieldTarget::requestCompleted, |
| this, &QNearFieldManagerPrivateImpl::handlerRequestCompleted); |
| disconnect(target, &QNearFieldTarget::error, |
| this, &QNearFieldManagerPrivateImpl::handlerError); |
| m_idToTarget.remove(m_idToTarget.key(target)); |
| } |
| |
| struct VerifyRecord |
| { |
| QNdefFilter::Record filterRecord; |
| unsigned int count; |
| }; |
| |
| void QNearFieldManagerPrivateImpl::handlerNdefMessageRead(const QNdefMessage &message, const QNearFieldTarget::RequestId &id) |
| { |
| QNearFieldTarget *target = m_idToTarget.value(id); |
| //For message handlers without filters |
| for (int i = 0; i < ndefMessageHandlers.count(); i++) { |
| ndefMessageHandlers.at(i).second.invoke(ndefMessageHandlers.at(i).first.second, Q_ARG(QNdefMessage, message), Q_ARG(QNearFieldTarget*, target)); |
| } |
| |
| //For message handlers that specified a filter |
| for (int i = 0; i < ndefFilterHandlers.count(); ++i) { |
| bool matched = true; |
| |
| QNdefFilter filter = ndefFilterHandlers.at(i).second.first; |
| |
| QList<VerifyRecord> filterRecords; |
| for (int j = 0; j < filter.recordCount(); ++j) { |
| VerifyRecord vr; |
| vr.count = 0; |
| vr.filterRecord = filter.recordAt(j); |
| |
| filterRecords.append(vr); |
| } |
| |
| for (const QNdefRecord &record : message) { |
| for (int j = 0; matched && (j < filterRecords.count()); ++j) { |
| VerifyRecord &vr = filterRecords[j]; |
| |
| if (vr.filterRecord.typeNameFormat == record.typeNameFormat() && |
| ( vr.filterRecord.type == record.type() || |
| vr.filterRecord.type.isEmpty()) ) { |
| ++vr.count; |
| break; |
| } else { |
| if (filter.orderMatch()) { |
| if (vr.filterRecord.minimum <= vr.count && |
| vr.count <= vr.filterRecord.maximum) { |
| continue; |
| } else { |
| matched = false; |
| } |
| } |
| } |
| } |
| } |
| |
| for (int j = 0; matched && (j < filterRecords.count()); ++j) { |
| const VerifyRecord &vr = filterRecords.at(j); |
| |
| if (vr.filterRecord.minimum <= vr.count && vr.count <= vr.filterRecord.maximum) |
| continue; |
| else |
| matched = false; |
| } |
| |
| if (matched) { |
| ndefFilterHandlers.at(i).second.second.invoke(ndefFilterHandlers.at(i).first.second, Q_ARG(QNdefMessage, message), Q_ARG(QNearFieldTarget*, target)); |
| } |
| } |
| } |
| |
| void QNearFieldManagerPrivateImpl::handlerRequestCompleted(const QNearFieldTarget::RequestId &id) |
| { |
| m_idToTarget.remove(id); |
| } |
| |
| void QNearFieldManagerPrivateImpl::handlerError(QNearFieldTarget::Error error, const QNearFieldTarget::RequestId &id) |
| { |
| Q_UNUSED(error); |
| m_idToTarget.remove(id); |
| } |
| |
| bool QNearFieldManagerPrivateImpl::isAvailable() const |
| { |
| return AndroidNfc::isAvailable(); |
| } |
| |
| bool QNearFieldManagerPrivateImpl::isSupported() const |
| { |
| return AndroidNfc::isSupported(); |
| } |
| |
| bool QNearFieldManagerPrivateImpl::startTargetDetection() |
| { |
| if (m_detecting) |
| return false; // Already detecting targets |
| |
| m_detecting = true; |
| updateReceiveState(); |
| return true; |
| } |
| |
| void QNearFieldManagerPrivateImpl::stopTargetDetection() |
| { |
| m_detecting = false; |
| updateReceiveState(); |
| } |
| |
| // FIXME This is supposed to be a platform registration. A message that |
| // matches the given NDEF filter should restart the current application. |
| // The implementation below only works as long as the current application |
| // is running. It is not a platform wide registration on Android. |
| int QNearFieldManagerPrivateImpl::registerNdefMessageHandler(QObject *object, const QMetaMethod &method) |
| { |
| ndefMessageHandlers.append(QPair<QPair<int, QObject *>, QMetaMethod>(QPair<int, QObject *>(m_handlerID, object), method)); |
| updateReceiveState(); |
| //Returns the handler ID and increments it afterwards |
| return m_handlerID++; |
| } |
| |
| // FIXME see above |
| int QNearFieldManagerPrivateImpl::registerNdefMessageHandler(const QNdefFilter &filter, |
| QObject *object, const QMetaMethod &method) |
| { |
| //If no record is set in the filter, we ignore the filter |
| if (filter.recordCount()==0) |
| return registerNdefMessageHandler(object, method); |
| |
| ndefFilterHandlers.append(QPair<QPair<int, QObject*>, QPair<QNdefFilter, QMetaMethod> > |
| (QPair<int, QObject*>(m_handlerID, object), QPair<QNdefFilter, QMetaMethod>(filter, method))); |
| |
| updateReceiveState(); |
| |
| return m_handlerID++; |
| } |
| |
| bool QNearFieldManagerPrivateImpl::unregisterNdefMessageHandler(int handlerId) |
| { |
| for (int i=0; i<ndefMessageHandlers.count(); ++i) { |
| if (ndefMessageHandlers.at(i).first.first == handlerId) { |
| ndefMessageHandlers.removeAt(i); |
| updateReceiveState(); |
| return true; |
| } |
| } |
| for (int i=0; i<ndefFilterHandlers.count(); ++i) { |
| if (ndefFilterHandlers.at(i).first.first == handlerId) { |
| ndefFilterHandlers.removeAt(i); |
| updateReceiveState(); |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| void QNearFieldManagerPrivateImpl::requestAccess(QNearFieldManager::TargetAccessModes accessModes) |
| { |
| Q_UNUSED(accessModes); |
| //Do nothing, because we dont have access modes for the target |
| } |
| |
| void QNearFieldManagerPrivateImpl::releaseAccess(QNearFieldManager::TargetAccessModes accessModes) |
| { |
| Q_UNUSED(accessModes); |
| //Do nothing, because we dont have access modes for the target |
| } |
| |
| void QNearFieldManagerPrivateImpl::newIntent(QAndroidJniObject intent) |
| { |
| // This function is called from different thread and is used to move intent to main thread. |
| QMetaObject::invokeMethod(this, "onTargetDiscovered", Qt::QueuedConnection, Q_ARG(QAndroidJniObject, intent)); |
| } |
| |
| QByteArray QNearFieldManagerPrivateImpl::getUid(const QAndroidJniObject &intent) |
| { |
| if (!intent.isValid()) |
| return QByteArray(); |
| |
| QAndroidJniEnvironment env; |
| QAndroidJniObject tag = AndroidNfc::getTag(intent); |
| return getUidforTag(tag); |
| } |
| |
| void QNearFieldManagerPrivateImpl::onTargetDiscovered(QAndroidJniObject intent) |
| { |
| // Only intents with a tag are relevant |
| if (!AndroidNfc::getTag(intent).isValid()) |
| return; |
| |
| // Getting UID |
| QByteArray uid = getUid(intent); |
| |
| // Accepting all targets but only sending signal of requested types. |
| NearFieldTarget *&target = m_detectedTargets[uid]; |
| if (target) { |
| target->setIntent(intent); // Updating existing target |
| } else { |
| target = new NearFieldTarget(intent, uid, this); |
| connect(target, &NearFieldTarget::targetDestroyed, this, &QNearFieldManagerPrivateImpl::onTargetDestroyed); |
| connect(target, &NearFieldTarget::targetLost, this, &QNearFieldManagerPrivateImpl::targetLost); |
| } |
| emit targetDetected(target); |
| } |
| |
| void QNearFieldManagerPrivateImpl::onTargetDestroyed(const QByteArray &uid) |
| { |
| m_detectedTargets.remove(uid); |
| } |
| |
| QByteArray QNearFieldManagerPrivateImpl::getUidforTag(const QAndroidJniObject &tag) |
| { |
| if (!tag.isValid()) |
| return QByteArray(); |
| |
| QAndroidJniEnvironment env; |
| QAndroidJniObject tagId = tag.callObjectMethod("getId", "()[B"); |
| QByteArray uid; |
| jsize len = env->GetArrayLength(tagId.object<jbyteArray>()); |
| uid.resize(len); |
| env->GetByteArrayRegion(tagId.object<jbyteArray>(), 0, len, reinterpret_cast<jbyte*>(uid.data())); |
| return uid; |
| } |
| |
| void QNearFieldManagerPrivateImpl::updateReceiveState() |
| { |
| if (m_detecting) { |
| AndroidNfc::registerListener(this); |
| } else { |
| if (ndefMessageHandlers.count() || ndefFilterHandlers.count()) { |
| AndroidNfc::registerListener(this); |
| } else { |
| AndroidNfc::unregisterListener(this); |
| } |
| } |
| } |
| |
| QT_END_NAMESPACE |
