tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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WaiveXrayWrapper.cpp (3486B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "WaiveXrayWrapper.h"
      8 #include "WrapperFactory.h"
      9 #include "jsapi.h"
     10 #include "js/CallAndConstruct.h"  // JS::IsCallable
     11 
     12 using namespace JS;
     13 
     14 namespace xpc {
     15 
     16 bool WaiveXrayWrapper::getOwnPropertyDescriptor(
     17    JSContext* cx, HandleObject wrapper, HandleId id,
     18    MutableHandle<mozilla::Maybe<PropertyDescriptor>> desc) const {
     19  if (!CrossCompartmentWrapper::getOwnPropertyDescriptor(cx, wrapper, id,
     20                                                         desc)) {
     21    return false;
     22  }
     23 
     24  if (desc.isNothing()) {
     25    return true;
     26  }
     27 
     28  Rooted<PropertyDescriptor> desc_(cx, *desc);
     29  if (desc_.hasValue()) {
     30    if (!WrapperFactory::WaiveXrayAndWrap(cx, desc_.value())) {
     31      return false;
     32    }
     33  }
     34  if (desc_.hasGetter() && desc_.getter()) {
     35    RootedValue v(cx, JS::ObjectValue(*desc_.getter()));
     36    if (!WrapperFactory::WaiveXrayAndWrap(cx, &v)) {
     37      return false;
     38    }
     39    desc_.setGetter(&v.toObject());
     40  }
     41  if (desc_.hasSetter() && desc_.setter()) {
     42    RootedValue v(cx, JS::ObjectValue(*desc_.setter()));
     43    if (!WrapperFactory::WaiveXrayAndWrap(cx, &v)) {
     44      return false;
     45    }
     46    desc_.setSetter(&v.toObject());
     47  }
     48 
     49  desc.set(mozilla::Some(desc_.get()));
     50  return true;
     51 }
     52 
     53 bool WaiveXrayWrapper::get(JSContext* cx, HandleObject wrapper,
     54                           HandleValue receiver, HandleId id,
     55                           MutableHandleValue vp) const {
     56  return CrossCompartmentWrapper::get(cx, wrapper, receiver, id, vp) &&
     57         WrapperFactory::WaiveXrayAndWrap(cx, vp);
     58 }
     59 
     60 bool WaiveXrayWrapper::call(JSContext* cx, HandleObject wrapper,
     61                            const JS::CallArgs& args) const {
     62  return CrossCompartmentWrapper::call(cx, wrapper, args) &&
     63         WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
     64 }
     65 
     66 bool WaiveXrayWrapper::construct(JSContext* cx, HandleObject wrapper,
     67                                 const JS::CallArgs& args) const {
     68  return CrossCompartmentWrapper::construct(cx, wrapper, args) &&
     69         WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
     70 }
     71 
     72 // NB: This is important as the other side of a handshake with FieldGetter. See
     73 // nsXBLProtoImplField.cpp.
     74 bool WaiveXrayWrapper::nativeCall(JSContext* cx, JS::IsAcceptableThis test,
     75                                  JS::NativeImpl impl,
     76                                  const JS::CallArgs& args) const {
     77  return CrossCompartmentWrapper::nativeCall(cx, test, impl, args) &&
     78         WrapperFactory::WaiveXrayAndWrap(cx, args.rval());
     79 }
     80 
     81 bool WaiveXrayWrapper::getPrototype(JSContext* cx, HandleObject wrapper,
     82                                    MutableHandleObject protop) const {
     83  return CrossCompartmentWrapper::getPrototype(cx, wrapper, protop) &&
     84         (!protop || WrapperFactory::WaiveXrayAndWrap(cx, protop));
     85 }
     86 
     87 bool WaiveXrayWrapper::getPrototypeIfOrdinary(
     88    JSContext* cx, HandleObject wrapper, bool* isOrdinary,
     89    MutableHandleObject protop) const {
     90  return CrossCompartmentWrapper::getPrototypeIfOrdinary(cx, wrapper,
     91                                                         isOrdinary, protop) &&
     92         (!protop || WrapperFactory::WaiveXrayAndWrap(cx, protop));
     93 }
     94 
     95 }  // namespace xpc