mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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197 lines
8.0 KiB
C++
197 lines
8.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* vim: set ts=4 sw=4 et tw=99 ft=cpp:
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef XrayWrapper_h
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#define XrayWrapper_h
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#include "mozilla/Attributes.h"
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#include "jswrapper.h"
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// Xray wrappers re-resolve the original native properties on the native
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// object and always directly access to those properties.
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// Because they work so differently from the rest of the wrapper hierarchy,
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// we pull them out of the Wrapper inheritance hierarchy and create a
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// little world around them.
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namespace xpc {
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bool
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holder_get(JSContext *cx, JS::HandleObject holder, JS::HandleId id, JS::MutableHandleValue vp);
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bool
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holder_set(JSContext *cx, JS::HandleObject holder, JS::HandleId id, bool strict,
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JS::MutableHandleValue vp);
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namespace XrayUtils {
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extern const JSClass HolderClass;
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bool CloneExpandoChain(JSContext *cx, JSObject *src, JSObject *dst);
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bool
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IsTransparent(JSContext *cx, JS::HandleObject wrapper, JS::HandleId id);
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JSObject *
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GetNativePropertiesObject(JSContext *cx, JSObject *wrapper);
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bool
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IsXrayResolving(JSContext *cx, JS::HandleObject wrapper, JS::HandleId id);
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bool
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HasNativeProperty(JSContext *cx, JS::HandleObject wrapper, JS::HandleId id,
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bool *hasProp);
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}
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class XrayTraits;
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class XPCWrappedNativeXrayTraits;
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class DOMXrayTraits;
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enum XrayType {
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XrayForDOMObject,
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XrayForWrappedNative,
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NotXray
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};
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XrayType GetXrayType(JSObject *obj);
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XrayTraits* GetXrayTraits(JSObject *obj);
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// NB: Base *must* derive from JSProxyHandler
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template <typename Base, typename Traits = XPCWrappedNativeXrayTraits >
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class XrayWrapper : public Base {
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public:
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XrayWrapper(unsigned flags);
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virtual ~XrayWrapper();
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/* Fundamental proxy traps. */
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virtual bool isExtensible(JSContext *cx, JS::Handle<JSObject*> wrapper, bool *extensible) MOZ_OVERRIDE;
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virtual bool preventExtensions(JSContext *cx, JS::Handle<JSObject*> wrapper) MOZ_OVERRIDE;
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virtual bool getPropertyDescriptor(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id,
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JS::MutableHandle<JSPropertyDescriptor> desc, unsigned flags);
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virtual bool getOwnPropertyDescriptor(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id,
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JS::MutableHandle<JSPropertyDescriptor> desc,
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unsigned flags);
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virtual bool defineProperty(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id,
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JS::MutableHandle<JSPropertyDescriptor> desc);
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virtual bool getOwnPropertyNames(JSContext *cx, JS::Handle<JSObject*> wrapper,
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JS::AutoIdVector &props);
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virtual bool delete_(JSContext *cx, JS::Handle<JSObject*> wrapper,
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JS::Handle<jsid> id, bool *bp);
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virtual bool enumerate(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::AutoIdVector &props);
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/* Derived proxy traps. */
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virtual bool get(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> receiver,
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JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp);
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virtual bool set(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> receiver,
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JS::Handle<jsid> id, bool strict, JS::MutableHandle<JS::Value> vp);
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virtual bool has(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id,
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bool *bp);
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virtual bool hasOwn(JSContext *cx, JS::Handle<JSObject*> wrapper, JS::Handle<jsid> id,
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bool *bp);
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virtual bool keys(JSContext *cx, JS::Handle<JSObject*> wrapper,
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JS::AutoIdVector &props);
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virtual bool iterate(JSContext *cx, JS::Handle<JSObject*> wrapper, unsigned flags,
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JS::MutableHandle<JS::Value> vp);
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virtual bool call(JSContext *cx, JS::Handle<JSObject*> wrapper,
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const JS::CallArgs &args) MOZ_OVERRIDE;
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virtual bool construct(JSContext *cx, JS::Handle<JSObject*> wrapper,
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const JS::CallArgs &args) MOZ_OVERRIDE;
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virtual bool defaultValue(JSContext *cx, JS::HandleObject wrapper,
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JSType hint, JS::MutableHandleValue vp)
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MOZ_OVERRIDE;
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static XrayWrapper singleton;
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private:
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bool enumerate(JSContext *cx, JS::Handle<JSObject*> wrapper, unsigned flags,
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JS::AutoIdVector &props);
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};
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#define PermissiveXrayXPCWN xpc::XrayWrapper<js::CrossCompartmentWrapper, xpc::XPCWrappedNativeXrayTraits>
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#define SecurityXrayXPCWN xpc::XrayWrapper<js::CrossCompartmentSecurityWrapper, xpc::XPCWrappedNativeXrayTraits>
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#define PermissiveXrayDOM xpc::XrayWrapper<js::CrossCompartmentWrapper, xpc::DOMXrayTraits>
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#define SecurityXrayDOM xpc::XrayWrapper<js::CrossCompartmentSecurityWrapper, xpc::DOMXrayTraits>
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#define SCSecurityXrayXPCWN xpc::XrayWrapper<js::SameCompartmentSecurityWrapper, xpc::XPCWrappedNativeXrayTraits>
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class SandboxProxyHandler : public js::Wrapper {
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public:
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SandboxProxyHandler() : js::Wrapper(0)
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{
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}
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virtual bool getPropertyDescriptor(JSContext *cx, JS::Handle<JSObject*> proxy,
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JS::Handle<jsid> id,
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JS::MutableHandle<JSPropertyDescriptor> desc,
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unsigned flags) MOZ_OVERRIDE;
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virtual bool getOwnPropertyDescriptor(JSContext *cx, JS::Handle<JSObject*> proxy,
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JS::Handle<jsid> id,
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JS::MutableHandle<JSPropertyDescriptor> desc,
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unsigned flags) MOZ_OVERRIDE;
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// We just forward the derived traps to the BaseProxyHandler versions which
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// implement them in terms of the fundamental traps.
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virtual bool has(JSContext *cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id,
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bool *bp) MOZ_OVERRIDE;
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virtual bool hasOwn(JSContext *cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id,
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bool *bp) MOZ_OVERRIDE;
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virtual bool get(JSContext *cx, JS::Handle<JSObject*> proxy, JS::Handle<JSObject*> receiver,
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JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) MOZ_OVERRIDE;
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virtual bool set(JSContext *cx, JS::Handle<JSObject*> proxy, JS::Handle<JSObject*> receiver,
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JS::Handle<jsid> id, bool strict, JS::MutableHandle<JS::Value> vp) MOZ_OVERRIDE;
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virtual bool keys(JSContext *cx, JS::Handle<JSObject*> proxy,
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JS::AutoIdVector &props) MOZ_OVERRIDE;
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virtual bool iterate(JSContext *cx, JS::Handle<JSObject*> proxy, unsigned flags,
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JS::MutableHandle<JS::Value> vp) MOZ_OVERRIDE;
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};
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extern SandboxProxyHandler sandboxProxyHandler;
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// A proxy handler that lets us wrap callables and invoke them with
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// the correct this object, while forwarding all other operations down
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// to them directly.
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class SandboxCallableProxyHandler : public js::Wrapper {
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public:
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SandboxCallableProxyHandler() : js::Wrapper(0)
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{
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}
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virtual bool call(JSContext *cx, JS::Handle<JSObject*> proxy,
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const JS::CallArgs &args) MOZ_OVERRIDE;
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};
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extern SandboxCallableProxyHandler sandboxCallableProxyHandler;
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class AutoSetWrapperNotShadowing;
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class XPCWrappedNativeXrayTraits;
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class MOZ_STACK_CLASS ResolvingId {
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public:
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ResolvingId(JSContext *cx, JS::HandleObject wrapper, JS::HandleId id);
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~ResolvingId();
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bool isXrayShadowing(jsid id);
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bool isResolving(jsid id);
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static ResolvingId* getResolvingId(JSObject *holder);
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static JSObject* getHolderObject(JSObject *wrapper);
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static ResolvingId *getResolvingIdFromWrapper(JSObject *wrapper);
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private:
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friend class AutoSetWrapperNotShadowing;
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friend class XPCWrappedNativeXrayTraits;
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JS::HandleId mId;
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JS::RootedObject mHolder;
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ResolvingId *mPrev;
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bool mXrayShadowing;
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};
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}
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#endif
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