Encrypted Logs: part 1

qtox.pro

@@ -139,7 +139,10 @@ HEADERS  += src/widget/form/addfriendform.h \
     src/cameraworker.h \
     src/widget/videosurface.h \
     src/widget/form/loadhistorydialog.h \
-    src/historykeeper.h
+    src/historykeeper.h \
+    src/misc/db/genericddinterface.h \
+    src/misc/db/plaindb.h \
+    src/misc/db/encrypteddb.h
 
 SOURCES += \
     src/widget/form/addfriendform.cpp \
@@ -188,4 +191,7 @@ SOURCES += \
     src/cameraworker.cpp \
     src/widget/videosurface.cpp \
     src/widget/form/loadhistorydialog.cpp \
-    src/historykeeper.cpp
+    src/historykeeper.cpp \
+    src/misc/db/genericddinterface.cpp \
+    src/misc/db/plaindb.cpp \
+    src/misc/db/encrypteddb.cpp

src/misc/db/encrypteddb.cpp

@@ -0,0 +1,60 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#include "encrypteddb.h"
+#include "src/misc/settings.h"
+
+#include <QDir>
+#include <QSqlQuery>
+
+EncryptedDb::EncryptedDb(const QString &fname, const QString &key) :
+    key(key), encrFile(fname), PlainDb(":memory:")
+{
+    QList<QString> sqlCommands = decryptFile();
+    for (const QString &cmd : sqlCommands)
+    {
+        PlainDb::exec(true, cmd);
+    }
+}
+
+EncryptedDb::~EncryptedDb()
+{
+    // save to file if necessary
+}
+
+QSqlQuery EncryptedDb::exec(bool keep, const QString &query)
+{
+    QSqlQuery ret = PlainDb::exec(keep, query);
+    if (keep)
+        appendToEncrypted(query);
+
+    return ret;
+}
+
+bool EncryptedDb::save()
+{
+    return true;
+}
+
+QList<QString> EncryptedDb::decryptFile()
+{
+    return QList<QString>();
+}
+
+void EncryptedDb::appendToEncrypted(const QString &sql)
+{
+    Q_UNUSED(sql)
+}

src/misc/db/encrypteddb.h

@@ -0,0 +1,44 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#ifndef ENCRYPTEDDB_H
+#define ENCRYPTEDDB_H
+
+#include "plaindb.h"
+
+#include <QList>
+
+class EncryptedDb : public PlainDb
+{
+public:
+    EncryptedDb(const QString& fname, const QString &key);
+    virtual ~EncryptedDb();
+
+    virtual QSqlQuery exec(bool keep, const QString &query);
+    virtual bool save();
+
+private:
+    QString getFileName(){return encrFile;}
+    QString getKey(){return key;}
+
+    QList<QString> decryptFile();
+    void appendToEncrypted(const QString &sql);
+
+    QString key;
+    QString encrFile;
+};
+
+#endif // ENCRYPTEDDB_H

src/misc/db/genericddinterface.cpp

@@ -0,0 +1,21 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#include "genericddinterface.h"
+
+GenericDdInterface::~GenericDdInterface()
+{
+}

src/misc/db/genericddinterface.h

@@ -0,0 +1,32 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#ifndef GENERICDDINTERFACE_H
+#define GENERICDDINTERFACE_H
+
+class QSqlQuery;
+class QString;
+
+class GenericDdInterface
+{
+public:
+    virtual ~GenericDdInterface();
+
+    virtual QSqlQuery exec(bool keep, const QString &query) = 0;
+    virtual bool save() = 0;
+};
+
+#endif // GENERICDDINTERFACE_H

src/misc/db/plaindb.cpp

@@ -0,0 +1,49 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#include "plaindb.h"
+#include <QDebug>
+#include <QSqlQuery>
+#include <QString>
+
+PlainDb::PlainDb(const QString &db_name)
+{
+    db = QSqlDatabase::addDatabase("QSQLITE");
+    db.setDatabaseName(db_name);
+
+    if (!db.open())
+    {
+        qWarning() << QString("Can't open file: %1, history will not be saved!").arg(db_name);
+        db.setDatabaseName(":memory:");
+        db.open();
+    }
+}
+
+PlainDb::~PlainDb()
+{
+    db.close();
+}
+
+QSqlQuery PlainDb::exec(bool keep, const QString &query)
+{
+    Q_UNUSED(keep)
+    return db.exec(query);
+}
+
+bool PlainDb::save()
+{
+    return true;
+}

src/misc/db/plaindb.h

@@ -0,0 +1,37 @@
+/*
+    Copyright (C) 2014 by Project Tox <https://tox.im>
+
+    This file is part of qTox, a Qt-based graphical interface for Tox.
+
+    This program is libre software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+    See the COPYING file for more details.
+*/
+
+#ifndef PLAINDB_H
+#define PLAINDB_H
+
+#include "genericddinterface.h"
+
+#include <QSqlDatabase>
+
+class PlainDb : public GenericDdInterface
+{
+public:
+    PlainDb(const QString &db_name);
+    virtual ~PlainDb();
+
+    virtual QSqlQuery exec(bool keep, const QString &query);
+    virtual bool save();
+
+private:
+    QSqlDatabase db;
+};
+
+#endif // PLAINDB_H