1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/js/xpconnect/wrappers/WrapperFactory.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,72 @@
1.4 +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* vim: set ts=8 sts=4 et sw=4 tw=99: */
1.6 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#ifndef _xpc_WRAPPERFACTORY_H
1.11 +#define _xpc_WRAPPERFACTORY_H
1.12 +
1.13 +#include "jswrapper.h"
1.14 +
1.15 +namespace xpc {
1.16 +
1.17 +class WrapperFactory {
1.18 + public:
1.19 + enum { WAIVE_XRAY_WRAPPER_FLAG = js::Wrapper::LAST_USED_FLAG << 1,
1.20 + IS_XRAY_WRAPPER_FLAG = WAIVE_XRAY_WRAPPER_FLAG << 1 };
1.21 +
1.22 + // Return true if any of any of the nested wrappers have the flag set.
1.23 + static bool HasWrapperFlag(JSObject *wrapper, unsigned flag) {
1.24 + unsigned flags = 0;
1.25 + js::UncheckedUnwrap(wrapper, true, &flags);
1.26 + return !!(flags & flag);
1.27 + }
1.28 +
1.29 + static bool IsXrayWrapper(JSObject *wrapper) {
1.30 + return HasWrapperFlag(wrapper, IS_XRAY_WRAPPER_FLAG);
1.31 + }
1.32 +
1.33 + static bool HasWaiveXrayFlag(JSObject *wrapper) {
1.34 + return HasWrapperFlag(wrapper, WAIVE_XRAY_WRAPPER_FLAG);
1.35 + }
1.36 +
1.37 + static bool IsSecurityWrapper(JSObject *obj) {
1.38 + return !js::CheckedUnwrap(obj);
1.39 + }
1.40 +
1.41 + static bool IsCOW(JSObject *wrapper);
1.42 +
1.43 + static JSObject *GetXrayWaiver(JS::HandleObject obj);
1.44 + static JSObject *CreateXrayWaiver(JSContext *cx, JS::HandleObject obj);
1.45 + static JSObject *WaiveXray(JSContext *cx, JSObject *obj);
1.46 +
1.47 + static JSObject *DoubleWrap(JSContext *cx, JS::HandleObject obj, unsigned flags);
1.48 +
1.49 + // Prepare a given object for wrapping in a new compartment.
1.50 + static JSObject *PrepareForWrapping(JSContext *cx,
1.51 + JS::HandleObject scope,
1.52 + JS::HandleObject obj,
1.53 + unsigned flags);
1.54 +
1.55 + // Rewrap an object that is about to cross compartment boundaries.
1.56 + static JSObject *Rewrap(JSContext *cx,
1.57 + JS::HandleObject existing,
1.58 + JS::HandleObject obj,
1.59 + JS::HandleObject wrappedProto,
1.60 + JS::HandleObject parent,
1.61 + unsigned flags);
1.62 +
1.63 + // Wrap wrapped object into a waiver wrapper and then re-wrap it.
1.64 + static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleValue vp);
1.65 + static bool WaiveXrayAndWrap(JSContext *cx, JS::MutableHandleObject object);
1.66 +
1.67 + // Returns true if the wrapper is in not shadowing mode for the id.
1.68 + static bool XrayWrapperNotShadowing(JSObject *wrapper, jsid id);
1.69 +};
1.70 +
1.71 +extern js::Wrapper XrayWaiver;
1.72 +
1.73 +}
1.74 +
1.75 +#endif /* _xpc_WRAPPERFACTORY_H */
