WireGuard rework for MacOS and Windows (#314)

WireGuard rework for MacOS and Windows

client/platforms/windows/windowsutils.cpp

@@ -0,0 +1,62 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "windowsutils.h"
+
+#include <Windows.h>
+#include <errhandlingapi.h>
+
+#include <QSettings>
+#include <QSysInfo>
+
+#include "logger.h"
+
+namespace {
+Logger logger("WindowsUtils");
+}  // namespace
+
+constexpr const int WINDOWS_11_BUILD =
+    22000;  // Build Number of the first release win 11 iso
+
+QString WindowsUtils::getErrorMessage(quint32 code) {
+  LPSTR messageBuffer = nullptr;
+  size_t size = FormatMessageA(
+      FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM |
+          FORMAT_MESSAGE_IGNORE_INSERTS,
+      nullptr, code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+      (LPSTR)&messageBuffer, 0, nullptr);
+
+  std::string message(messageBuffer, size);
+  QString result(message.c_str());
+  LocalFree(messageBuffer);
+  return result;
+}
+
+QString WindowsUtils::getErrorMessage() {
+  return getErrorMessage(GetLastError());
+}
+
+// A simple function to log windows error messages.
+void WindowsUtils::windowsLog(const QString& msg) {
+  QString errmsg = getErrorMessage();
+  logger.error() << msg << "-" << errmsg;
+}
+
+// Static
+QString WindowsUtils::windowsVersion() {
+  QSettings regCurrentVersion(
+      "HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion",
+      QSettings::NativeFormat);
+
+  int buildNr = regCurrentVersion.value("CurrentBuild").toInt();
+  if (buildNr >= WINDOWS_11_BUILD) {
+    return "11";
+  }
+  return QSysInfo::productVersion();
+}
+
+// static
+void WindowsUtils::forceCrash() {
+  RaiseException(0x0000DEAD, EXCEPTION_NONCONTINUABLE, 0, NULL);
+}