Added game files from TMP4

bin/pack/root/utils.py

@@ -0,0 +1,66 @@
+class Sandbox(object):
+	# DO NOT REMOVE ANY ENTRY OF WHITE LIST
+	# THIS ENTIES ARE USED FOR Sandbox.
+	# 	(If sys.modules['__main__'] is changed, you can see the hell.)
+	WHITE_LIST = ['__builtin__', 'types', __name__, '__main__', 'sys']
+	def __init__(self, prevent_imported_modules = False, allowed_modules = [], prevented_modules = [], allowed_paths = []):
+		self.prevent_imported_modules = prevent_imported_modules
+		self.allowed_modules = allowed_modules
+		self.prevented_modules = prevented_modules
+		self.allowed_paths = allowed_paths
+	
+	def add_allowed_modules(self, allowed_modules):
+		self.allowed_modules = self.allowed_modules + allowed_modules
+		
+	def add_prevented_modules(self, prevented_modules):
+		self.prevented_modules = self.prevented_modules + prevented_modules
+	
+	def execfile(self, filename, dic):
+		import sys
+		import copy
+				
+		for allowed_module_name in self.allowed_modules:
+			try:
+				exec 'import {0}'.format(allowed_module_name)
+			except:
+				# Just now, pass the exception.
+				# (filename could not use this module)
+				sys.stderr.write("Could not import %s" % allowed_module_name)
+				pass
+		# shallow copy of sys.modules
+		old_modules = copy.copy(sys.modules)
+		
+		old_path = sys.path
+		sys.path = self.allowed_paths
+	
+		# set current imported modules None
+		if self.prevent_imported_modules:
+			import types
+			for k, v in old_modules.items():
+				if type(v) == types.ModuleType:
+					if not (k in self.WHITE_LIST or k in self.allowed_modules):
+						sys.modules[k] = None
+
+		# set prevented modules None.
+		for prevented_module_name in self.prevented_modules:
+			sys.modules[prevented_module_name] = None
+		
+		try:
+			f = open(filename, 'rb')
+			data = f.read()
+			code = compile(data, filename, 'exec')
+			exec code in dic
+		except Exception, e:
+			sys.stderr.write(e)
+		finally:
+			# Restore original settings.
+			#sys.modules = old_modules# <- This is not effective. I don't know why, but I guess some where got old sys.modules reference and access old one.
+			for k, v in sys.modules.items():
+				if not k in old_modules:
+					del sys.modules[k]
+			for k, v in old_modules.items():
+				sys.modules[k] = v
+				
+			sys.path = old_path
+
+