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subsurface/mobile-widgets/qmlmanager.h
Linus Torvalds 85392343fa Re-do the libdivecomputer fingerprint save/load code 
This tries to make our fingerprinting code work better, by avoiding
using the "deviceid" field that has always been unreliable because we've
calculated it multiple different ways, and even for the same version of
subsurface, it ends up changing in the middle (ie we calculate one value
initially, then re-calculate it when we have a proper serial number
string).

So instead, the fingerprinting code will look up and save the
fingerprint file using purely "stable" information that is available
early during the download:

 - the device model name (which is a string with vendor and product name
   separated by a space)

 - the DC_EVENT_DEVINFO 32-bit 'serial' number (which is not necessarily
   a real serial number at all, but hopefully at least a unique number
   for the particular product)

but because the model name is not necessarily a good filename (think
slashes and other possibly invalid characters), we hash that model name
and use the resulting hex number in the fingerprint file name.

This way the fingerprint file is unambiguous at load and save time, and
depends purely on libdivecomputer data.

But because we also need to verify that we have the actual _dive_
associated with that fingerprint, we also need to save the final
deviceid and diveid when saving the fingerprint file, so that when we
load it again we can look up the dive and verify that we have it before
we use the fingerprint data.

To do that, the fingerprint file itself contains not just the
fingerprint data from libdivecomputer, but the last 8 bytes of the file
are the (subsurface) deviceid and the diveid of the dive that is
associated with the fingerprint.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2021-09-19 16:51:46 -07:00

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// SPDX-License-Identifier: GPL-2.0
#ifndef QMLMANAGER_H
#define QMLMANAGER_H
#include <QObject>
#include <QString>
#include <QNetworkAccessManager>
#include <QScreen>
#include <QElapsedTimer>
#include <QColor>
#include <QFile>
#include "core/btdiscovery.h"
#include "core/downloadfromdcthread.h"
#include "qt-models/completionmodels.h"
#include "qt-models/divelocationmodel.h"
#include "core/settings/qPrefCloudStorage.h"
#include "core/subsurface-qt/divelistnotifier.h"
#if defined(Q_OS_ANDROID)
#include "core/serial_usb_android.h"
#endif
class QAction;
struct DiveSiteChange; // An obscure implementation artifact - remove in due course.
class QMLManager : public QObject {
Q_OBJECT
Q_PROPERTY(bool loadFromCloud MEMBER m_loadFromCloud WRITE setLoadFromCloud NOTIFY loadFromCloudChanged)
Q_PROPERTY(QString startPageText MEMBER m_startPageText WRITE setStartPageText NOTIFY startPageTextChanged)
Q_PROPERTY(bool verboseEnabled MEMBER m_verboseEnabled WRITE setVerboseEnabled NOTIFY verboseEnabledChanged)
Q_PROPERTY(QString notificationText MEMBER m_notificationText WRITE setNotificationText NOTIFY notificationTextChanged)
Q_PROPERTY(QStringList suitList READ suitList NOTIFY suitListChanged)
Q_PROPERTY(QStringList buddyList READ buddyList NOTIFY buddyListChanged)
Q_PROPERTY(QStringList divemasterList READ divemasterList NOTIFY divemasterListChanged)
Q_PROPERTY(QStringList locationList READ locationList NOTIFY locationListChanged)
Q_PROPERTY(QStringList cylinderListInit READ cylinderListInit CONSTANT)
Q_PROPERTY(QStringList defaultCylinderListInit READ defaultCylinderListInit CONSTANT)
Q_PROPERTY(QStringList cloudCacheList READ cloudCacheList NOTIFY cloudCacheListChanged)
Q_PROPERTY(QString progressMessage MEMBER m_progressMessage WRITE setProgressMessage NOTIFY progressMessageChanged)
Q_PROPERTY(bool btEnabled MEMBER m_btEnabled WRITE setBtEnabled NOTIFY btEnabledChanged)
Q_PROPERTY(QString DC_vendor READ DC_vendor WRITE DC_setVendor)
Q_PROPERTY(QString DC_product READ DC_product WRITE DC_setProduct)
Q_PROPERTY(QString DC_devName READ DC_devName WRITE DC_setDevName)
Q_PROPERTY(QString DC_devBluetoothName READ DC_devBluetoothName WRITE DC_setDevBluetoothName)
Q_PROPERTY(QString descriptor READ DC_descriptor)
Q_PROPERTY(bool DC_forceDownload READ DC_forceDownload WRITE DC_setForceDownload NOTIFY DC_ForceDownloadChanged)
Q_PROPERTY(bool DC_bluetoothMode READ DC_bluetoothMode WRITE DC_setBluetoothMode)
Q_PROPERTY(bool DC_saveDump READ DC_saveDump WRITE DC_setSaveDump)
Q_PROPERTY(QString pluggedInDeviceName MEMBER m_pluggedInDeviceName NOTIFY pluggedInDeviceNameChanged)
Q_PROPERTY(bool showNonDiveComputers MEMBER m_showNonDiveComputers WRITE setShowNonDiveComputers NOTIFY showNonDiveComputersChanged)
Q_PROPERTY(qPrefCloudStorage::cloud_status oldStatus MEMBER m_oldStatus WRITE setOldStatus NOTIFY oldStatusChanged)
Q_PROPERTY(QString undoText READ getUndoText NOTIFY undoTextChanged) // this is a read-only property
Q_PROPERTY(QString redoText READ getRedoText NOTIFY redoTextChanged) // this is a read-only property
Q_PROPERTY(bool diveListProcessing MEMBER m_diveListProcessing WRITE setDiveListProcessing NOTIFY diveListProcessingChanged)
Q_PROPERTY(bool initialized MEMBER m_initialized NOTIFY initializedChanged)
Q_PROPERTY(QString syncState READ getSyncState NOTIFY syncStateChanged)
public:
QMLManager();
~QMLManager();
enum export_types {
EX_DIVES_XML,
EX_DIVE_SITES_XML,
EX_UDDF,
EX_DIVELOGS_DE,
EX_DIVESHARE
};
Q_ENUM(export_types)
#if !defined(Q_OS_ANDROID)
Q_INVOKABLE void exportToFile(export_types type, QString directory, bool anonymize);
#endif
Q_INVOKABLE void exportToWEB(export_types type, QString userId, QString password, bool anonymize);
QString DC_vendor() const;
void DC_setVendor(const QString& vendor);
QString DC_product() const;
void DC_setProduct(const QString& product);
QString DC_devName() const;
void DC_setDevName(const QString& devName);
Q_INVOKABLE void retrieveBluetoothName();
QString DC_devBluetoothName() const;
void DC_setDevBluetoothName(const QString& devBluetoothName);
QString DC_descriptor() const;
bool DC_forceDownload() const;
void DC_setForceDownload(bool force);
bool DC_bluetoothMode() const;
void DC_setBluetoothMode(bool mode);
bool DC_saveDump() const;
void DC_setSaveDump(bool dumpMode);
QString getUndoText() const;
QString getRedoText() const;
Q_INVOKABLE QStringList getProductListFromVendor(const QString& vendor);
Q_INVOKABLE int getMatchingAddress(const QString &vendor, const QString &product);
Q_INVOKABLE int getDetectedVendorIndex();
Q_INVOKABLE int getDetectedProductIndex(const QString &currentVendorText);
Q_INVOKABLE int getConnectionIndex(const QString &deviceSubstr);
Q_INVOKABLE void setGitLocalOnly(const bool &value);
Q_INVOKABLE void setFilter(const QString filterText, int mode);
Q_INVOKABLE void selectRow(int row);
Q_INVOKABLE void selectSwipeRow(int row);
Q_INVOKABLE void importCacheRepo(QString repo);
static QMLManager *instance();
Q_INVOKABLE void registerError(QString error);
QString consumeError();
bool verboseEnabled() const;
void setVerboseEnabled(bool verboseMode);
void setLoadFromCloud(bool done);
void syncLoadFromCloud();
QString startPageText() const;
void setStartPageText(const QString& text);
QString notificationText() const;
void setNotificationText(QString text);
QString progressMessage() const;
void setProgressMessage(QString text);
bool btEnabled() const;
void setBtEnabled(bool value);
void setShowNonDiveComputers(bool show);
qreal lastDevicePixelRatio();
void setDevicePixelRatio(qreal dpr, QScreen *screen);
void setDiveListProcessing(bool value);
QStringList suitList() const;
QStringList buddyList() const;
QStringList divemasterList() const;
QStringList locationList() const;
QStringList cylinderListInit() const;
QStringList defaultCylinderListInit() const;
QStringList cloudCacheList() const;
Q_INVOKABLE void setStatusbarColor(QColor color);
void btHostModeChange(QBluetoothLocalDevice::HostMode state);
QObject *qmlWindow;
#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
void writeToAppLogFile(QString logText);
#endif
qPrefCloudStorage::cloud_status oldStatus() const;
void setOldStatus(const qPrefCloudStorage::cloud_status value);
void rememberOldStatus();
QString getSyncState() const;
public slots:
void appInitialized();
void applicationStateChanged(Qt::ApplicationState state);
void saveCloudCredentials(const QString &email, const QString &password, const QString &pin);
void commitChanges(QString diveId, QString number, QString date, QString location, QString gps,
QString duration, QString depth, QString airtemp,
QString watertemp, QString suit, QString buddy,
QString diveMaster, QString tags, QString weight, QString notes, QStringList startpressure,
QStringList endpressure, QStringList gasmix, QStringList usedCylinder, int rating, int visibility, QString state);
void updateTripDetails(QString tripIdString, QString tripLocation, QString tripNotes);
void removeDiveFromTrip(int id);
void addTripForDive(int id);
void addDiveToTrip(int id, int tripId);
void changesNeedSaving(bool fromUndo = false);
void openNoCloudRepo();
void saveChangesCloud(bool forceRemoteSync, bool fromUndo = false);
void selectDive(int id);
void deleteDive(int id);
void toggleDiveInvalid(int id);
void copyDiveData(int id);
void pasteDiveData(int id);
bool toggleDiveSite(bool toggle);
bool toggleNotes(bool toggle);
bool toggleDiveMaster(bool toggle);
bool toggleBuddy(bool toggle);
bool toggleSuit(bool toggle);
bool toggleRating(bool toggle);
bool toggleVisibility(bool toggle);
bool toggleTags(bool toggle);
bool toggleCylinders(bool toggle);
bool toggleWeights(bool toggle);
void undo();
void redo();
int addDive();
void cancelDownloadDC();
QString getCombinedLogs();
void copyAppLogToClipboard();
bool createSupportEmail();
void finishSetup();
QString getNumber(const QString& diveId);
QString getDate(const QString& diveId);
QString getGpsFromSiteName(const QString& siteName);
QString getVersion() const;
void refreshDiveList();
void screenChanged(QScreen *screen);
void appendTextToLog(const QString &newText);
void quit();
void btRescan();
void usbRescan();
void rescanConnections();
#if defined(Q_OS_ANDROID)
void showDownloadPage(QAndroidJniObject usbDevice);
void restartDownload(QAndroidJniObject usbDevice);
void androidUsbPopoulateConnections();
QString getProductVendorConnectionIdx(android_usb_serial_device_descriptor descriptor);
#endif
void divesChanged(const QVector<dive *> &dives, DiveField field);
private:
BuddyCompletionModel buddyModel;
SuitCompletionModel suitModel;
DiveMasterCompletionModel divemasterModel;
DiveSiteSortedModel locationModel;
QString m_startPageText;
QString m_lastError;
bool m_verboseEnabled;
bool m_diveListProcessing;
bool m_initialized;
bool m_loadFromCloud;
static QMLManager *m_instance;
QString m_notificationText;
qreal m_lastDevicePixelRatio;
QElapsedTimer timer;
bool checkDate(struct dive *d, QString date);
bool checkLocation(DiveSiteChange &change, struct dive *d, QString location, QString gps);
bool checkDuration(struct dive *d, QString duration);
bool checkDepth(struct dive *d, QString depth);
bool currentGitLocalOnly;
bool localChanges;
QString m_progressMessage;
bool m_btEnabled;
void updateAllGlobalLists();
void updateHaveLocalChanges(bool status);
location_t getGps(QString &gps);
QString m_pluggedInDeviceName;
bool m_showNonDiveComputers;
struct dive *m_copyPasteDive = NULL;
struct dive_components what;
QAction *undoAction;
bool verifyCredentials(QString email, QString password, QString pin);
void loadDivesWithValidCredentials();
void revertToNoCloudIfNeeded();
void consumeFinishedLoad();
void mergeLocalRepo();
void openLocalThenRemote(QString url);
void saveChangesLocal(bool fromUndo = false);
#if defined(Q_OS_ANDROID) || defined(Q_OS_IOS)
QString appLogFileName;
QFile appLogFile;
bool appLogFileOpen;
#endif
qPrefCloudStorage::cloud_status m_oldStatus;
signals:
void verboseEnabledChanged();
void diveListProcessingChanged();
void initializedChanged();
void loadFromCloudChanged();
void startPageTextChanged();
void notificationTextChanged();
void sendScreenChanged(QScreen *screen);
void progressMessageChanged();
void btEnabledChanged();
void suitListChanged();
void buddyListChanged();
void divemasterListChanged();
void locationListChanged();
void cloudCacheListChanged();
void waitingForPositionChanged();
void pluggedInDeviceNameChanged();
void showNonDiveComputersChanged();
void DC_ForceDownloadChanged();
void oldStatusChanged();
void undoTextChanged();
void redoTextChanged();
void restartDownloadSignal();
void syncStateChanged();
// From upload process
void uploadFinish(bool success, const QString &text);
void uploadProgress(qreal percentage);
private slots:
void uploadFinishSlot(bool success, const QString &text, const QByteArray &html);
};
#endif
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