[feat] add lock screen on disconnect option, refs #125

apps/desktop/src/platform/macos/screen_lock.cpp

@@ -0,0 +1,35 @@
+/*
+ * @Author: DI JUNKUN
+ * @Date: 2026-10-25
+ * Copyright (c) 2026 by DI JUNKUN, All Rights Reserved.
+ */
+
+#include "screen_lock.h"
+
+#include <dlfcn.h>
+
+#include "rd_log.h"
+
+namespace crossdesk {
+
+bool LockScreen() {
+  // macOS has no public immediate-lock API. Resolve login.framework at
+  // runtime so an OS without this private entry point fails gracefully.
+  static void* framework = dlopen(
+      "/System/Library/PrivateFrameworks/login.framework/login",
+      RTLD_LAZY | RTLD_LOCAL);
+  using LockScreenFunction = int (*)();
+  static const auto lock = framework
+      ? reinterpret_cast<LockScreenFunction>(
+            dlsym(framework, "SACLockScreenImmediate"))
+      : nullptr;
+  if (!lock) {
+    LOG_WARN("macOS screen lock API is unavailable");
+    return false;
+  }
+  const int result = lock();
+  if (result != 0) LOG_WARN("macOS screen lock request failed: {}", result);
+  return result == 0;
+}
+
+}  // namespace crossdesk