bindings: Refactors BindingSecurity::shouldAllowAccessToXXX.

third_party/WebKit/Source/bindings/templates/methods.cpp

 {% from 'conversions.cpp' import declare_enum_validation_variable, v8_value_to_local_cpp_value %}
 
 
 {##############################################################################}
 {% macro generate_method(method, world_suffix) %}
 {% filter conditional(method.conditional_string) %}
 {% if method.returns_promise and method.has_exception_state %}
 static void {{method.name}}{{method.overload_index}}Method{{world_suffix}}Promise(const v8::FunctionCallbackInfo<v8::Value>& info, ExceptionState& exceptionState)
 {% else %}
 static void {{method.name}}{{method.overload_index}}Method{{world_suffix}}(const v8::FunctionCallbackInfo<v8::Value>& info)
 {% endif %}
 {
     {# Local variables #}
     {% if method.has_exception_state and not method.returns_promise %}
     ExceptionState exceptionState(ExceptionState::ExecutionContext, "{{method.name}}", "{{interface_name}}", info.Holder(), info.GetIsolate());
     {% endif %}
     {# Overloaded methods have length checked during overload resolution #}
     {% if method.number_of_required_arguments and not method.overload_index %}
     if (UNLIKELY(info.Length() < {{method.number_of_required_arguments}})) {
         {{throw_minimum_arity_type_error(method, method.number_of_required_arguments) | indent(8)}}
     }
     {% endif %}
     {% if not method.is_static %}
     {{cpp_class}}* impl = {{v8_class}}::toImpl(info.Holder());
     {% endif %}
     {% if method.is_custom_element_callbacks %}
     CustomElementProcessingStack::CallbackDeliveryScope deliveryScope;
     {% endif %}
     {# Security checks #}
-    {% if method.is_check_security_for_window %}
-    if (LocalDOMWindow* window = impl->toDOMWindow()) {
-        if (!BindingSecurity::shouldAllowAccessToFrame(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), window->frame(), exceptionState)) {
-            {{propagate_error_with_exception_state(method) | indent(12)}}
-        }
-        if (!window->document())
-            return;
-    }
-    {% elif method.is_check_security_for_frame %}
-    if (!BindingSecurity::shouldAllowAccessToFrame(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), impl->frame(), exceptionState)) {
-        {{propagate_error_with_exception_state(method) | indent(8)}}
-    }
-    {% endif %}
-    {% if method.is_check_security_for_node %}
-    if (!BindingSecurity::shouldAllowAccessToNode(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), impl->{{method.name}}(exceptionState), exceptionState)) {
+    {% if method.is_check_security_for_window or
+          method.is_check_security_for_frame or
+          method.is_check_security_for_node %}
+    if (!BindingSecurity::shouldAllowAccessTo(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), {{method.cpp_value if method.is_check_security_for_node else 'impl'}}, exceptionState)) {
+        {% if method.is_check_security_for_node %}
         v8SetReturnValueNull(info);
-        {{propagate_error_with_exception_state(method) | indent(8)}}
+        {% endif %}
+        {% if not method.returns_promise %}
+        exceptionState.throwIfNeeded();
+        {% endif %}
+        return;
     }
     {% endif %}
     {# Call method #}
     {% if method.arguments %}
     {{generate_arguments(method, world_suffix) | indent}}
     {% endif %}
     {% if world_suffix %}
     {{cpp_method_call(method, method.v8_set_return_value_for_main_world, method.cpp_value) | indent}}
     {% else %}
     {{cpp_method_call(method, method.v8_set_return_value, method.cpp_value) | indent}}
@@ skipping 472 matching lines @@
     v8::Local<v8::FunctionTemplate> domTemplate = data->domTemplate(&domTemplateKey, {{cpp_class}}V8Internal::{{method.name}}MethodCallback{{world_suffix}}, v8Undefined(), {{signature}}, {{method.length}});
 
     // It is unsafe to use info.Holder() because OriginSafeMethodGetter is called
     // back without checking the type of info.Holder().
     v8::Local<v8::Object> holder = {{v8_class}}::findInstanceInPrototypeChain(info.This(), info.GetIsolate());
     if (holder.IsEmpty()) {
         v8SetReturnValue(info, domTemplate->GetFunction(info.GetIsolate()->GetCurrentContext()).ToLocalChecked());
         return;
     }
     {{cpp_class}}* impl = {{v8_class}}::toImpl(holder);
-    if (!BindingSecurity::shouldAllowAccessToFrame(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), impl->frame(), DoNotReportSecurityError)) {
+    if (!BindingSecurity::shouldAllowAccessTo(info.GetIsolate(), callingDOMWindow(info.GetIsolate()), impl, DoNotReportSecurityError)) {
         v8SetReturnValue(info, domTemplate->GetFunction(info.GetIsolate()->GetCurrentContext()).ToLocalChecked());
         return;
     }
 
     {# The findInstanceInPrototypeChain() call above only returns a non-empty handle if info.This() is an Object. #}
     v8::Local<v8::Value> hiddenValue = V8HiddenValue::getHiddenValue(ScriptState::current(info.GetIsolate()), v8::Local<v8::Object>::Cast(info.This()), v8AtomicString(info.GetIsolate(), "{{method.name}}"));
     if (!hiddenValue.IsEmpty()) {
         v8SetReturnValue(info, hiddenValue);
         return;
     }
@@ skipping 135 matching lines @@
 {% filter runtime_enabled(method.overloads.runtime_enabled_function_all
                           if method.overloads else
                           method.runtime_enabled_function) %}
 const V8DOMConfiguration::MethodConfiguration {{method.name}}MethodConfiguration = {{method_configuration(method)}};
 V8DOMConfiguration::installMethod(isolate, v8::Local<v8::Object>(), prototypeObject, interfaceObject, defaultSignature, {{method.name}}MethodConfiguration);
 {% endfilter %}{# runtime_enabled() #}
 {% endfilter %}{# exposed() #}
 {% endfor %}
 {% endif %}
 {%- endmacro %}