extends Node

func _ready():
	print("=== SANDBOX PROBE 5: Corrected Sandboxing Mechanisms (Godot 4.6.2) ===")
	probe_script_loading()
	probe_os_apis()
	probe_file_access()
	probe_network()
	probe_classdb()
	probe_expression_engine()
	probe_engine_singletons()
	probe_worker_threads()
	probe_project_settings()
	probe_scriptserver()
	probe_script_restrictions()
	probe_allowlist()
	print("=== SANDBOX PROBE 5 END ===")
	get_tree().quit()

func probe_script_loading():
	print("--- Script loading ---")
	# Can we load a GDScript from a string at runtime?
	var gd = GDScript.new()
	gd.source_code = "extends RefCounted\nfunc hello():\n\treturn 42\n"
	var err = gd.reload()
	print("GDScript.reload() from source_code err=", err)
	if err == OK:
		var inst = gd.new()
		print("  instantiated, hello()=", inst.call("hello"))
	# Can we load a script resource from a path?
	var res = load("res://test_script.gd")
	print("load('res://test_script.gd') = ", res)
	# Can we get the source code back from a loaded script?
	if res:
		print("  get_source_code() available: ", res.has_method("get_source_code"))
	# Can we get the AST / parse tree? (instance methods)
	print("  GDScript instance has 'get_ast': ", gd.has_method("get_ast"))
	print("  GDScript instance has 'get_parser': ", gd.has_method("get_parser"))
	# Can we get the list of methods?
	print("  GDScript instance has 'get_script_method_list': ", gd.has_method("get_script_method_list"))
	# Can we get the list of member variables?
	print("  GDScript instance has 'get_script_property_list': ", gd.has_method("get_script_property_list"))
	# Can we get the script's base class?
	print("  GDScript instance has 'get_instance_base_type': ", gd.has_method("get_instance_base_type"))
	# Can we get the script's resource path?
	print("  GDScript instance has 'get_path': ", gd.has_method("get_path"))

func probe_os_apis():
	print("--- OS APIs ---")
	# Can we execute shell commands?
	var out = []
	var exit_code = OS.execute("echo", ["hello"], out)
	print("OS.execute('echo') exit=", exit_code, " out=", out)
	# Environment access
	print("OS.get_environment('HOME') = ", OS.get_environment("HOME"))
	# Process spawning
	print("OS has 'create_process': ", OS.has_method("create_process"))
	# Can we get the command line?
	print("OS.get_cmdline_args() = ", OS.get_cmdline_args())
	# Can we get user data dir?
	print("OS.get_user_data_dir() = ", OS.get_user_data_dir())
	# Can we get executable path?
	print("OS.get_executable_path() = ", OS.get_executable_path())

func probe_file_access():
	print("--- File access ---")
	# Can we read arbitrary files?
	var f = FileAccess.open("/etc/hostname", FileAccess.READ)
	print("FileAccess.open('/etc/hostname') = ", f)
	if f:
		print("  content: ", f.get_as_text())
		f.close()
	# Can we write outside the project?
	var w = FileAccess.open("/tmp/godot_probe_write.txt", FileAccess.WRITE)
	print("FileAccess.open('/tmp/...', WRITE) = ", w)
	if w:
		w.store_string("probe")
		w.close()
		print("  wrote to /tmp OK")
	# Can we list directories?
	var dir = DirAccess.open("/")
	print("DirAccess.open('/') = ", dir)
	if dir:
		var names = dir.get_files()
		print("  root files count: ", names.size())
	# Can we access res:// and user:// ?
	var res_dir = DirAccess.open("res://")
	print("DirAccess.open('res://') = ", res_dir)
	var user_dir = DirAccess.open("user://")
	print("DirAccess.open('user://') = ", user_dir)

func probe_network():
	print("--- Network ---")
	# Can we open raw sockets?
	var tcp = TCPServer.new()
	var bind_err = tcp.listen(0)
	print("TCPServer.listen(0) err=", bind_err)
	# HTTP client
	var http = HTTPClient.new()
	print("HTTPClient instantiated: ", http != null)
	# Can we make HTTP requests?
	var http_req = HTTPRequest.new()
	print("HTTPRequest instantiated: ", http_req != null)
	# PacketPeerUDP
	var udp = PacketPeerUDP.new()
	print("PacketPeerUDP instantiated: ", udp != null)
	# WebSocket
	var ws = WebSocketPeer.new()
	print("WebSocketPeer instantiated: ", ws != null)

func probe_classdb():
	print("--- ClassDB ---")
	# ClassDB is the registry of all engine classes
	print("ClassDB.class_exists('OS'): ", ClassDB.class_exists("OS"))
	print("ClassDB.class_exists('FileAccess'): ", ClassDB.class_exists("FileAccess"))
	print("ClassDB.class_exists('TCPServer'): ", ClassDB.class_exists("TCPServer"))
	print("ClassDB.class_exists('HTTPClient'): ", ClassDB.class_exists("HTTPClient"))
	# Can we enumerate all classes?
	var class_list = ClassDB.get_class_list()
	print("ClassDB.get_class_list() count: ", class_list.size())
	# Can we get methods of a class?
	var os_methods = ClassDB.class_get_method_list("OS")
	print("OS method count: ", os_methods.size())
	# Can we get properties of a class?
	var os_props = ClassDB.class_get_property_list("OS")
	print("OS property count: ", os_props.size())
	# Can we instantiate a class by name?
	var inst = ClassDB.instantiate("Node")
	print("ClassDB.instantiate('Node') = ", inst)
	# Can we check if a class is a singleton? (static method on ClassDB)
	print("ClassDB has 'class_get_singleton': ", ClassDB.has_method("class_get_singleton"))
	# Can we get the singleton instance of OS?
	var os_singleton = ClassDB.class_get_singleton("OS")
	print("ClassDB.class_get_singleton('OS') = ", os_singleton)
	# Can we check what methods are available on the singleton?
	if os_singleton:
		print("  OS singleton has 'execute': ", os_singleton.has_method("execute"))
		print("  OS singleton has 'get_environment': ", os_singleton.has_method("get_environment"))

func probe_expression_engine():
	print("--- Expression engine ---")
	# Godot has an Expression class for evaluating expressions safely
	var expr = Expression.new()
	var err = expr.parse("1 + 2")
	print("Expression.parse('1 + 2') err=", err)
	if err == OK:
		var result = expr.execute()
		print("  Expression.execute() = ", result)
	# Can Expression access OS?
	var expr2 = Expression.new()
	err = expr2.parse("OS.get_environment('HOME')")
	print("Expression.parse('OS.get_environment') err=", err)
	if err == OK:
		var result2 = expr2.execute()
		print("  Expression.execute() = ", result2)
	# Expression with base_instance
	var expr3 = Expression.new()
	err = expr3.parse("get_environment('HOME')", ["OS"])
	print("Expression.parse with base_instance err=", err)
	if err == OK:
		var result3 = expr3.execute([], OS)
		print("  Expression.execute with OS base = ", result3)
	# Can Expression call arbitrary methods?
	var expr4 = Expression.new()
	err = expr4.parse("FileAccess.open('/etc/hostname', 1)")
	print("Expression.parse('FileAccess.open') err=", err)
	if err == OK:
		var result4 = expr4.execute()
		print("  Expression.execute() = ", result4)
	# Can Expression access the scene tree?
	var expr5 = Expression.new()
	err = expr5.parse("get_tree().quit()")
	print("Expression.parse('get_tree().quit()') err=", err)
	if err == OK:
		var result5 = expr5.execute()
		print("  Expression.execute() = ", result5)

func probe_engine_singletons():
	print("--- Engine singletons ---")
	# Engine singletons are the global objects like OS, Engine, etc.
	# get_singletons() is a static method on Engine
	var singletons = Engine.get_singletons()
	print("Engine.get_singletons() count: ", singletons.size())
	for s in singletons:
		print("    singleton: ", s)
	# Can we remove a singleton?
	print("Engine has 'remove_singleton': ", Engine.has_method("remove_singleton"))
	print("Engine has 'add_singleton': ", Engine.has_method("add_singleton"))
	# Can we get the main loop?
	print("Engine.get_main_loop() = ", Engine.get_main_loop())
	# Can we get the physics server?
	print("Engine.get_physics_server() = ", Engine.get_physics_server())

func probe_worker_threads():
	print("--- Worker threads ---")
	# Can we run scripts in worker threads?
	var thread = Thread.new()
	print("  Thread.new() = ", thread)
	# WorkerThreadPool
	print("  WorkerThreadPool has 'add_task': ", WorkerThreadPool.has_method("add_task"))
	# Can we isolate a script in a thread?
	print("  Thread available: ", Thread != null)

func probe_project_settings():
	print("--- Project settings ---")
	# Check for any sandbox-related project settings
	var settings = ProjectSettings.get_property_list()
	var relevant = []
	for s in settings:
		var name = String(s.name)
		if "sandbox" in name.to_lower() or "restrict" in name.to_lower() or "security" in name.to_lower():
			relevant.append(name)
	print("  Sandbox/security project settings: ", relevant)
	# Check if there's a way to disable specific features
	print("  ProjectSettings has 'application/run/disable_os': ", ProjectSettings.has_setting("application/run/disable_os"))
	print("  ProjectSettings has 'application/run/disable_file_access': ", ProjectSettings.has_setting("application/run/disable_file_access"))
	print("  ProjectSettings has 'application/run/disable_network': ", ProjectSettings.has_setting("application/run/disable_network"))
	# Can we set project settings at runtime?
	print("  ProjectSettings has 'set_setting': ", ProjectSettings.has_method("set_setting"))
	print("  ProjectSettings has 'save': ", ProjectSettings.has_method("save"))

func probe_scriptserver():
	print("--- ScriptServer ---")
	# Does ScriptServer exist and what can it do?
	print("ScriptServer has_method('get_language_count'): ", ScriptServer.has_method("get_language_count"))
	print("ScriptServer has_method('get_language'): ", ScriptServer.has_method("get_language"))
	# Can we enumerate registered script languages?
	if ScriptServer.has_method("get_language_count"):
		var count = ScriptServer.get_language_count()
		print("  language count: ", count)
		for i in range(count):
			var lang = ScriptServer.get_language(i)
			print("  language[", i, "] = ", lang)

func probe_script_restrictions():
	print("--- Script restrictions ---")
	# Can we restrict which classes/globals a script can access?
	# Test: does GDScript have any built-in allowlist mechanism?
	var gd = GDScript.new()
	gd.source_code = "extends RefCounted\nfunc evil():\n\treturn OS.get_environment('HOME')\n"
	var err = gd.reload()
	print("  GDScript with OS access reload err=", err)
	if err == OK:
		var inst = gd.new()
		print("  evil() result: ", inst.call("evil"))
	# Can we block specific global classes?
	print("  GDScript has method to restrict globals: ", gd.has_method("set_global_scope"))
	print("  GDScript has method 'get_global_scope': ", gd.has_method("get_global_scope"))

func probe_allowlist():
	print("--- Allowlist / static analysis ---")
	# The allowlist approach: parse GDScript source and reject disallowed patterns
	# Test: can we detect dangerous API calls via string analysis?
	var dangerous_patterns = [
		"OS.execute", "OS.create_process", "OS.get_environment",
		"FileAccess.open", "DirAccess.open", "TCPServer", "HTTPClient",
		"load(", "preload(", "ClassDB", "Engine.get_main_loop",
		"get_tree().quit", "ProjectSettings"
	]
	var test_script = """extends Node
func _ready():
	var f = FileAccess.open("/etc/passwd", FileAccess.READ)
	OS.execute("rm", ["-rf", "/"])
	"""
	print("  Test script contains dangerous patterns:")
	for p in dangerous_patterns:
		if p in test_script:
			print("    DETECTED: ", p)
	# Can we use a tokenizer/lexer to parse GDScript?
	# GDScript has a built-in tokenizer accessible via the language
	var lang = GDScriptLanguage.new()
	print("  GDScriptLanguage.new() = ", lang)
	print("  GDScriptLanguage has 'get_name': ", lang.has_method("get_name"))
	print("  GDScriptLanguage has 'get_extension': ", lang.has_method("get_extension"))
	# Can we get the tokenizer?
	print("  GDScriptLanguage has 'get_tokenizer': ", lang.has_method("get_tokenizer"))
	# Can we get the parser?
	print("  GDScriptLanguage has 'get_parser': ", lang.has_method("get_parser"))
	# Can we get the analyzer?
	print("  GDScriptLanguage has 'get_analyzer': ", lang.has_method("get_analyzer"))
	# Can we get the compiler?
	print("  GDScriptLanguage has 'get_compiler': ", lang.has_method("get_compiler"))