Implement proper sandboxing (SailJail) configuration (#77)

* [flowplayer.desktop] Implement a proper SailJail configuration
  Originally developed by @poetaster and reviewed by @dcaliste in PR #75, see commits 68dc7f1 and fce86cd.

* [FlowPlayer.cpp] Eliminate migration functions due to conflict with sandboxing

flowplayer.desktop

@@ -6,4 +6,8 @@ Exec=flowplayer
 Name=FlowPlayer
 
 [X-Sailjail]
-Sandboxing=Disabled
+OrganizationName=sailfishos-applications
+# ApplicationName does not have to be identical to Name
+ApplicationName=flowplayer
+# Add the required permissions here
+Permissions=UserDirs;Audio;Bluetooth;Internet;RemovableMedia

src/FlowPlayer.cpp

@@ -22,61 +22,6 @@
 bool isDBOpened;
 bool databaseWorking;
 
-static void migrateSettings()
-{
-    const QString oldSettings = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) + "/cepiperez/flowplayer.conf";
-    const QString newSettings = QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation) + ".conf";
-    if (QFile::exists(oldSettings)) {
-        if (QDir().mkpath(QFileInfo(newSettings).path())
-            && !QFile::rename(oldSettings, newSettings)) {
-            qWarning() << "unable to move old configuration from" << oldSettings << "to" << newSettings;
-        }
-        QDir(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)).rmdir("cepiperez");
-    }
-}
-
-static void migrateDatabase()
-{
-    const QString olderDb = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) + "/cepiperez/flowplayer.db";
-    const QString oldDb = QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) + "/flowplayer/flowplayer/flowplayer.db";
-    const QString newDb = QStandardPaths::writableLocation(QStandardPaths::AppConfigLocation) + "/flowplayer.db";
-    if (QFile::exists(oldDb)) {
-        if (QDir().mkpath(QFileInfo(newDb).path())
-            && !QFile::rename(oldDb, newDb)) {
-            qWarning() << "unable to move old database from" << oldDb << "to" << newDb;
-        }
-        QDir(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation) + "/flowplayer").rmdir("flowplayer");
-        QDir(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)).rmdir("flowplayer");
-    } else if (QFile::exists(olderDb)) {
-        if (QDir().mkpath(QFileInfo(newDb).path())
-            && !QFile::rename(olderDb, newDb)) {
-            qWarning() << "unable to move old database from" << olderDb << "to" << newDb;
-        }
-        QDir(QStandardPaths::writableLocation(QStandardPaths::ConfigLocation)).rmdir("cepiperez");
-    }
-}
-
-static void migrateCache()
-{
-    const QString olderCache = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + "/flowplayer";
-    const QString oldCache = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + "/flowplayer/flowplayer";
-    const QString newCache = QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
-    if (QFileInfo(oldCache).isDir()) {
-        if (QDir().mkpath(QFileInfo(newCache).path())
-            && !QDir().rename(oldCache, newCache)) {
-            qWarning() << "unable to move old cache from" << oldCache << "to" << newCache;
-        }
-        QDir(QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation) + "/flowplayer").rmdir("flowplayer");
-        QDir(QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation)).rmdir("flowplayer");
-    } else if (QFileInfo(olderCache).isDir()) {
-        if (QDir().mkpath(QFileInfo(newCache).path())
-            && !QDir().rename(olderCache, newCache)) {
-            qWarning() << "unable to move old cache from" << olderCache << "to" << newCache;
-        }
-        QDir(QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation)).rmdir("flowplayer");
-    }
-}
-
 int main(int argc, char *argv[])
 {
     QTextCodec *linuxCodec = QTextCodec::codecForName("UTF-8");
@@ -86,10 +31,6 @@ int main(int argc, char *argv[])
     app->setOrganizationName("sailfishos-applications");
     app->setApplicationName("flowplayer");
 
-    migrateSettings();
-    migrateDatabase();
-    migrateCache();
-
     QString lang;
     QTranslator translator;