Detect tails, support data persistence

Co-authored-by: Thotbot <thotbot@protonmail.com>
Co-authored-by: Selsta <selsta@sent.at>

1 files changed, 100 insertions, 0 deletions

diff --git a/src/qt/TailsOS.cpp b/src/qt/TailsOS.cpp
new file mode 100644
index 00000000..df2fa92b
--- /dev/null
+++ b/src/qt/TailsOS.cpp
@@ -0,0 +1,100 @@
+#include <QRegExp>
+#include <QMessageBox>
+#include <QPixmap>
+#include <QTranslator>
+
+#include "TailsOS.h"
+#include "utils.h"
+
+bool TailsOS::usePersistence = false;
+QString TailsOS::tailsPathData = QString("/live/persistence/TailsData_unlocked/");
+
+bool TailsOS::detect()
+{
+    if (!fileExists("/etc/os-release"))
+        return false;
+
+    QByteArray data = fileOpen("/etc/os-release");
+    QRegularExpression re("TAILS_PRODUCT_NAME=\"Tails\"");
+    QRegularExpressionMatch os_match = re.match(data);
+    bool matched = os_match.hasMatch();
+
+#ifdef QT_DEBUG
+    if (matched)
+        qDebug() << "Tails OS detected";
+#endif
+
+    return matched;
+}
+
+bool TailsOS::detectDataPersistence()
+{
+    return QDir(QDir::homePath() + "/Persistent").exists();
+}
+
+bool TailsOS::detectDotPersistence()
+{
+    return QDir(tailsPathData + "dotfiles").exists();
+}
+
+void TailsOS::showDataPersistenceDisabledWarning()
+{
+    QMessageBox msgBox;
+    msgBox.setText(QObject::tr("Warning: persistence disabled"));
+    msgBox.setWindowTitle(QObject::tr("Warning: persistence disabled"));
+    msgBox.setInformativeText(
+        QObject::tr("Monero GUI has detected that Tails persistence is "
+                     "currently disabled. Any configurations you make inside "
+                     "the Monero GUI will not be saved."
+                     "\n\n"
+                     "In addition, make sure to not save your wallet on the "
+                     "filesystem, as it will be lost at shutdown."
+                     "\n\n"
+                     "To enable Tails persistence, setup an encrypted volume "
+                     "and restart Tails. To gain a startup menu item, "
+                     "enable the Tails \"dotfiles\" feature."));
+
+    msgBox.setStandardButtons(QMessageBox::Ok);
+    msgBox.setDefaultButton(QMessageBox::Ok);
+    msgBox.setIconPixmap(QPixmap(":/images/tails-grey.png"));
+    msgBox.exec();
+}
+
+void TailsOS::askPersistence()
+{
+    QMessageBox msgBox;
+    msgBox.setWindowTitle(QObject::tr("Monero GUI"));
+    msgBox.setText(QObject::tr("Use Tails persistence?"));
+    msgBox.setInformativeText(
+        QObject::tr("Persist wallet files and configuration on the encrypted volume?"
+                    "\n\n"
+                    "In addition, you can enable Tails dotfiles persistence "
+                    "to gain a start menu entry.\n"));
+
+    msgBox.setStandardButtons(QMessageBox::Yes | QMessageBox::No);
+    msgBox.setDefaultButton(QMessageBox::Yes);
+    msgBox.setIconPixmap(QPixmap(":/images/tails-grey.png"));
+    TailsOS::usePersistence = (msgBox.exec() == QMessageBox::Yes);
+}
+
+void TailsOS::persistXdgMime(QString filePath, QString data)
+{
+    QFileInfo file(filePath);
+    QString tailsPath = tailsPathData + "dotfiles/.local/share/applications/";
+
+    // write to persistent volume
+#ifdef QT_DEBUG
+    qDebug() << "Writing xdg mime: " << tailsPath + file.fileName();
+#endif
+
+    QDir().mkpath(tailsPath);  // ensure directory exists
+    fileWrite(tailsPath + file.fileName(), data);
+
+    // write to current session
+#ifdef QT_DEBUG
+    qDebug() << "Writing xdg mime: " << file.filePath();
+#endif
+
+    QDir().mkpath(file.path());  // ensure directory exists
+    fileWrite(file.filePath(), data);
+}