Merge pull request 'DebugInfoDialog: Add Tails version' (#69) from tobtoht/feather:tails_version into master

Reviewed-on: feather/feather#69

src/dialog/debuginfodialog.cpp

@@ -43,7 +43,11 @@ DebugInfoDialog::DebugInfoDialog(AppContext *ctx, QWidget *parent)
     ui->label_seedType->setText(ctx->currentWallet->getCacheAttribute("feather.seed").isEmpty() ? "25 word" : "14 word");
     ui->label_viewOnly->setText(ctx->currentWallet->viewOnly() ? "True" : "False");
 
-    ui->label_OS->setText(QSysInfo::prettyProductName());
+    QString os = QSysInfo::prettyProductName();
+    if (ctx->isTails) {
+        os = QString("Tails %1").arg(TailsOS::version());
+    }
+    ui->label_OS->setText(os);
     ui->label_timestamp->setText(QString::number(QDateTime::currentSecsSinceEpoch()));
 
     connect(ui->btn_Copy, &QPushButton::clicked, this, &DebugInfoDialog::copyToClipboad);

src/utils/tails.cpp

@@ -38,6 +38,20 @@ bool TailsOS::detectDotPersistence()
     return QDir(tailsPathData + "dotfiles").exists();
 }
 
+QString TailsOS::version()
+{
+    if (!Utils::fileExists("/etc/os-release"))
+        return "";
+
+    QByteArray data = Utils::fileOpen("/etc/os-release");
+    QRegExp re(R"(TAILS_VERSION_ID="(\d+.\d+))");
+    int pos = re.indexIn(data);
+    if (pos >= 0) {
+        return re.cap(1);
+    }
+    return "";
+}
+
 void TailsOS::showDataPersistenceDisabledWarning()
 {
     QMessageBox msgBox;

src/utils/tails.h

@@ -13,6 +13,7 @@ public:
     static bool detect();
     static bool detectDataPersistence();
     static bool detectDotPersistence();
+    static QString version();
 
     static void showDataPersistenceDisabledWarning();
     static void askPersistence();