save for christmas

common/include/System.h

@@ -25,7 +25,9 @@ public:
     static bool umountSDCard();
 
     static std::optional<QString> checkForUSBStick(QString const &dirPathUnderMountPath = ".");
+    static std::optional<QString> checkForSDCard(QString const &dirPathUnderMountPath = ".");
     static QString getUSBMountPath(QString const &dirPathUnderMountPath = ".");
+    static QString getSDMountPath(QString const &dirPathUnderMountPath = ".");
 
     //static QString getUSBDeviceName();
     static bool umountUSBStick();
@@ -54,7 +56,8 @@ public:
     static QString getPTU4MACAddress();
 
     static QStringList getJsonFilesOnUsbStick(QString const &mountPath);
-
+    static QString getDCFileOnUsbStick(QString const &mountPath);
+    static QString getDCFileOnSDCard(QString const &mountPath);
 };
 
 #endif // SYSTEM_H

common/src/System.cpp

@@ -265,6 +265,20 @@ std::optional<QString> System::checkForUSBStick(QString const &dirPathUnderMount
     return mountPath.isEmpty() ? std::nullopt : std::optional<QString>(mountPath);
 }
 
+std::optional<QString> System::checkForSDCard(QString const &dirPathUnderMountPath) {
+#if defined (ARCH_DesktopLinux)
+    // DEBUG / TEST:
+    if (QFileInfo(getSDMountPath()).isDir())
+        return true;
+    else
+        return false;
+#endif
+
+    QString const &mountPath = getSDMountPath(dirPathUnderMountPath);
+    // qCritical() << "MOUNT-PATH" << mountPath;
+    return mountPath.isEmpty() ? std::nullopt : std::optional<QString>(mountPath);
+}
+
 
 
 /**
@@ -315,7 +329,7 @@ QString System::getUSBMountPath(QString const &dirPathUnderMountPath) {
 
                 mountLine = line.split(' ');
                 if (mountLine.size() > 3) {
-                    qCritical() << "System::getUSBMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
+                    // qCritical() << "System::getUSBMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
                     QDir d(QDir::cleanPath(mountLine.at(2) + QDir::separator() + dirPathUnderMountPath));
                     if (d.exists()) {
                         return mountLine.at(2);
@@ -332,6 +346,64 @@ QString System::getUSBMountPath(QString const &dirPathUnderMountPath) {
     return "";
 }
 
+QString System::getSDMountPath(QString const &dirPathUnderMountPath) {
+
+#if defined (ARCH_DesktopLinux)
+    // DEBUG / TEST:
+    return QDir::homePath().append("/APconfigTest/USB");
+#endif
+
+    QProcess process;
+    process.setProcessChannelMode(QProcess::MergedChannels);
+
+    QStringList mountLine;
+
+    qDebug() << "System::getSDMountPath()";
+
+    QRegExp devRegExp   = QRegExp("dev/mmc*",   Qt::CaseSensitive, QRegExp::WildcardUnix);
+    QRegExp mountRegExp = QRegExp("media/mmc*", Qt::CaseSensitive, QRegExp::WildcardUnix);
+
+    QString commandString = "mount";
+
+    process.start(commandString);
+    if (!process.waitForStarted()) {
+        errorMsg = "System::getSDMountPath(): ERROR: waitForStarted()";
+        return "";
+    }
+    if (!process.waitForFinished(600000)) {
+        errorMsg = "System::getSDMountPath(): ERROR: " + process.errorString();
+        qDebug() << errorMsg;
+        return "";
+    }
+    else {
+        QByteArray bytes = process.readAll();
+        QStringList lines = QString(bytes).split("\n");
+        foreach (QString line, lines) {
+            qDebug() << "System::getSDMountPath() line:    " << line;
+
+            if (line.contains(devRegExp) && line.contains(mountRegExp)) {
+
+                qDebug() << "  -> this line is a usb storage device mount" << line;
+
+                mountLine = line.split(' ');
+                if (mountLine.size() > 3) {
+                    // qCritical() << "System::getSDMountPath(): " << mountLine.at(0) << " is mounted on " << mountLine.at(2);
+                    QDir d(QDir::cleanPath(mountLine.at(2) + QDir::separator() + dirPathUnderMountPath));
+                    if (d.exists()) {
+                        return mountLine.at(2);
+                    } else {
+                        qCritical() << "directory" << d.absolutePath() << "does not exist";
+                    }
+                }
+            }
+        }
+    }
+
+    qDebug() << "System::getSDMountPath() no mounted usb device found!";
+
+    return "";
+}
+
 QStringList System::getJsonFilesOnUsbStick(QString const &mountPath) {
     QStringList jsonFiles;
 
@@ -354,6 +426,38 @@ QStringList System::getJsonFilesOnUsbStick(QString const &mountPath) {
     return jsonFiles;
 }
 
+QString System::getDCFileOnUsbStick(QString const &mountPath) {
+    QString dcFile;
+
+    // /media/sda2/etc/dc
+    QString const &dirPath = QDir::cleanPath(mountPath + QDir::separator() + "etc" + QDir::separator() + "dc");
+    QDir d(dirPath);
+    if (d.exists()) {
+        QFileInfo fi(dirPath + QDir::separator() + "dc2c.bin");
+        if (fi.exists()) {
+            dcFile = fi.absoluteFilePath();
+        }
+    }
+
+    return dcFile;
+}
+
+QString System::getDCFileOnSDCard(QString const &mountPath) {
+    QString dcFile;
+
+    // /media/sda2/etc/dc
+    QString const &dirPath = QDir::cleanPath(mountPath + QDir::separator() + "etc" + QDir::separator() + "dc");
+    QDir d(dirPath);
+    if (d.exists()) {
+        QFileInfo fi(dirPath + QDir::separator() + "dc2c.bin");
+        if (fi.exists()) {
+            dcFile = fi.absoluteFilePath();
+        }
+    }
+
+    return dcFile;
+}
+
 /********************************************************************************
  * static function to check if a mounted sd-card is writable.
  *