Add a safe mode for the debugger that prevents launching any file

core/debugger.cpp

@@ -104,6 +104,15 @@ static void RegisterSettings()
 			"description" : "Whether to aggressively update the memory cache and analysis. If the target has self-modifying code, turning this on makes sure every function is re-analyzed every time the target stops, which gives the most accurate analysis. However, for large binaries with lots of functions, this may cause performance issues.",
 			"ignore" : ["SettingsProjectScope", "SettingsResourceScope"]
 			})");
+
+	settings->RegisterSetting("debugger.safeMode",
+		R"({
+			"title" : "Safe Mode",
+			"type" : "boolean",
+			"default" : false,
+			"description" : "When enabled, this prevents the debugger from launching any file.",
+			"ignore" : ["SettingsProjectScope", "SettingsResourceScope"]
+			})");
 }
 
 extern "C"

core/debuggercontroller.cpp

@@ -116,6 +116,17 @@ bool DebuggerController::Launch()
 
 DebugStopReason DebuggerController::LaunchAndWaitInternal()
 {
+	if (Settings::Instance()->Get<bool>("debugger.safeMode"))
+	{
+		DebuggerEvent event;
+		event.type = LaunchFailureEventType;
+		event.data.errorData.shortError = "Safe mode enabled";
+		event.data.errorData.error =
+			fmt::format("Cannot launch the target because the debugger is in safe mode.");
+		PostDebuggerEvent(event);
+		return InternalError;
+	}
+
 	DebuggerEvent event;
 	event.type = LaunchEventType;
 	PostDebuggerEvent(event);
@@ -1116,7 +1127,9 @@ void DebuggerController::EventHandler(const DebuggerEvent& event)
 	{
 		m_inputFileLoaded = false;
 		m_initialBreakpointSeen = false;
-		m_liveView->GetFile()->UnregisterViewOfType("Debugger", m_liveView);
+		// The m_liveView can be nullptr if the launch attempt fails because of the safe mode
+		if (m_liveView)
+			m_liveView->GetFile()->UnregisterViewOfType("Debugger", m_liveView);
 		SetLiveView(nullptr);
 		m_currentIP = 0;
 		m_lastIP = 0;