/work/obj-fuzz/dom/bindings/PluginBinding.cpp

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/* THIS FILE IS AUTOGENERATED FROM Plugin.webidl BY Codegen.py - DO NOT EDIT */

#include "PluginBinding.h"
#include "WrapperFactory.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/DOMJSClass.h"
#include "mozilla/dom/DOMJSProxyHandler.h"
#include "mozilla/dom/NonRefcountedDOMObject.h"
#include "mozilla/dom/Nullable.h"
#include "mozilla/dom/PrimitiveConversions.h"
#include "mozilla/dom/XrayExpandoClass.h"
#include "nsMimeTypeArray.h"
#include "nsPluginArray.h"

namespace mozilla {
namespace dom {

namespace binding_detail {}; // Just to make sure it's known as a namespace
using namespace mozilla::dom::binding_detail;


namespace Plugin_Binding {

MOZ_CAN_RUN_SCRIPT static bool
get_description(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get Plugin.description", DOM, cx);

  DOMString result;
  self->GetDescription(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo description_getterinfo = {
  { (JSJitGetterOp)get_description },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_filename(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get Plugin.filename", DOM, cx);

  DOMString result;
  self->GetFilename(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo filename_getterinfo = {
  { (JSJitGetterOp)get_filename },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_version(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get Plugin.version", DOM, cx);

  DOMString result;
  self->GetVersion(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo version_getterinfo = {
  { (JSJitGetterOp)get_version },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_name(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get Plugin.name", DOM, cx);

  DOMString result;
  self->GetName(result);
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!xpc::NonVoidStringToJsval(cx, result, args.rval())) {
    return false;
  }
  return true;
}

static const JSJitInfo name_getterinfo = {
  { (JSJitGetterOp)get_name },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_STRING,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
get_length(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, JSJitGetterCallArgs args)
{
  AUTO_PROFILER_LABEL_FAST("get Plugin.length", DOM, cx);

  uint32_t result(self->Length());
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  args.rval().setNumber(result);
  return true;
}

static const JSJitInfo length_getterinfo = {
  { (JSJitGetterOp)get_length },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Getter,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_DOUBLE,  /* returnType.  Not relevant for setters. */
  true,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
item(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("Plugin.item", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "Plugin.item");
  }
  uint32_t arg0;
  if (!ValueToPrimitive<uint32_t, eDefault>(cx, args[0], &arg0)) {
    return false;
  }
  auto result(StrongOrRawPtr<nsMimeType>(self->Item(arg0)));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!result) {
    args.rval().setNull();
    return true;
  }
  if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
    MOZ_ASSERT(JS_IsExceptionPending(cx));
    return false;
  }
  return true;
}

static const JSJitInfo item_methodinfo = {
  { (JSJitGetterOp)item },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

MOZ_CAN_RUN_SCRIPT static bool
namedItem(JSContext* cx, JS::Handle<JSObject*> obj, nsPluginElement* self, const JSJitMethodCallArgs& args)
{
  AUTO_PROFILER_LABEL_FAST("Plugin.namedItem", DOM, cx);

  if (MOZ_UNLIKELY(args.length() < 1)) {
    return ThrowErrorMessage(cx, MSG_MISSING_ARGUMENTS, "Plugin.namedItem");
  }
  binding_detail::FakeString arg0;
  if (!ConvertJSValueToString(cx, args[0], eStringify, eStringify, arg0)) {
    return false;
  }
  auto result(StrongOrRawPtr<nsMimeType>(self->NamedItem(NonNullHelper(Constify(arg0)))));
  MOZ_ASSERT(!JS_IsExceptionPending(cx));
  if (!result) {
    args.rval().setNull();
    return true;
  }
  if (!GetOrCreateDOMReflector(cx, result, args.rval())) {
    MOZ_ASSERT(JS_IsExceptionPending(cx));
    return false;
  }
  return true;
}

static const JSJitInfo namedItem_methodinfo = {
  { (JSJitGetterOp)namedItem },
  { prototypes::id::Plugin },
  { PrototypeTraits<prototypes::id::Plugin>::Depth },
  JSJitInfo::Method,
  JSJitInfo::AliasEverything, /* aliasSet.  Not relevant for setters. */
  JSVAL_TYPE_UNKNOWN,  /* returnType.  Not relevant for setters. */
  false,  /* isInfallible. False in setters. */
  false,  /* isMovable.  Not relevant for setters. */
  false, /* isEliminatable.  Not relevant for setters. */
  false, /* isAlwaysInSlot.  Only relevant for getters. */
  false, /* isLazilyCachedInSlot.  Only relevant for getters. */
  false,  /* isTypedMethod.  Only relevant for methods. */
  0   /* Reserved slot index, if we're stored in a slot, else 0. */
};
static_assert(0 <= JSJitInfo::maxSlotIndex, "We won't fit");
static_assert(0 < 1, "There is no slot for us");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSFunctionSpec sMethods_specs[] = {
  JS_FNSPEC("item", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&item_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_FNSPEC("namedItem", (GenericMethod<NormalThisPolicy, ThrowExceptions>), reinterpret_cast<const JSJitInfo*>(&namedItem_methodinfo), 1, JSPROP_ENUMERATE, nullptr),
  JS_SYM_FNSPEC(iterator, nullptr, nullptr, 0, 0, "ArrayValues"),
  JS_FS_END
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSFunctionSpec> sMethods[] = {
  { nullptr, &sMethods_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(3 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");

// We deliberately use brace-elision to make Visual Studio produce better initalization code.
#if defined(__clang__)
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wmissing-braces"
#endif
static const JSPropertySpec sAttributes_specs[] = {
  { "description", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &description_getterinfo, nullptr, nullptr },
  { "filename", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &filename_getterinfo, nullptr, nullptr },
  { "version", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &version_getterinfo, nullptr, nullptr },
  { "name", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &name_getterinfo, nullptr, nullptr },
  { "length", JSPROP_ENUMERATE, GenericGetter<NormalThisPolicy, ThrowExceptions>, &length_getterinfo, nullptr, nullptr },
  { nullptr, 0, nullptr, nullptr, nullptr, nullptr }
};
#if defined(__clang__)
#pragma clang diagnostic pop
#endif


static const Prefable<const JSPropertySpec> sAttributes[] = {
  { nullptr, &sAttributes_specs[0] },
  { nullptr, nullptr }
};

static_assert(1 <= 1ull << NUM_BITS_PROPERTY_INFO_PREF_INDEX,
    "We have a prefable index that is >= (1 << NUM_BITS_PROPERTY_INFO_PREF_INDEX)");
static_assert(5 <= 1ull << NUM_BITS_PROPERTY_INFO_SPEC_INDEX,
    "We have a spec index that is >= (1 << NUM_BITS_PROPERTY_INFO_SPEC_INDEX)");


static uint16_t sNativeProperties_sortedPropertyIndices[8];
static PropertyInfo sNativeProperties_propertyInfos[8];

static const NativePropertiesN<2> sNativeProperties = {
  false, 0,
  false, 0,
  true,  0 /* sMethods */,
  true,  1 /* sAttributes */,
  false, 0,
  false, 0,
  false, 0,
  -1,
  8,
  sNativeProperties_sortedPropertyIndices,
  {
    { sMethods, &sNativeProperties_propertyInfos[0] },
    { sAttributes, &sNativeProperties_propertyInfos[3] }
  }
};
static_assert(8 < 1ull << CHAR_BIT * sizeof(sNativeProperties.propertyInfoCount),
    "We have a property info count that is oversized");

static const DOMIfaceAndProtoJSClass sInterfaceObjectClass = {
  {
    "Function",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_SLOTS_BASE),
    &sBoringInterfaceObjectClassClassOps,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    &sInterfaceObjectClassObjectOps
  },
  eInterface,
  true,
  prototypes::id::Plugin,
  PrototypeTraits<prototypes::id::Plugin>::Depth,
  sNativePropertyHooks,
  "function Plugin() {\n    [native code]\n}",
  JS::GetRealmFunctionPrototype
};

static const DOMIfaceAndProtoJSClass sPrototypeClass = {
  {
    "PluginPrototype",
    JSCLASS_IS_DOMIFACEANDPROTOJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(DOM_INTERFACE_PROTO_SLOTS_BASE),
    JS_NULL_CLASS_OPS,
    JS_NULL_CLASS_SPEC,
    JS_NULL_CLASS_EXT,
    JS_NULL_OBJECT_OPS
  },
  eInterfacePrototype,
  false,
  prototypes::id::Plugin,
  PrototypeTraits<prototypes::id::Plugin>::Depth,
  sNativePropertyHooks,
  "[object PluginPrototype]",
  JS::GetRealmObjectPrototype
};

static_assert(IsBaseOf<nsISupports, nsPluginElement >::value,
                  "We don't support non-nsISupports native classes for "
                  "proxy-based bindings yet");


class DOMProxyHandler : public mozilla::dom::DOMProxyHandler
{
public:
  explicit constexpr DOMProxyHandler()
  {
  }

  virtual bool
  getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const override;

  virtual bool
  defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const override;

  using mozilla::dom::DOMProxyHandler::defineProperty;

  virtual bool
  ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const override;

  virtual bool
  hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const override;

  virtual bool
  get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const override;

  virtual const char*
  className(JSContext* cx, JS::Handle<JSObject*> proxy) const override;

  virtual bool
  finalizeInBackground(const JS::Value& priv) const override;

  virtual void
  finalize(JSFreeOp* fop, JSObject* proxy) const override;

  static const DOMProxyHandler*
  getInstance();

  virtual bool
  delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const override;

  virtual bool
  getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const override;

  virtual size_t
  objectMoved(JSObject* obj, JSObject* old) const override;
};

MOZ_ALWAYS_INLINE bool
IsProxy(JSObject* obj)
{
  return js::IsProxy(obj) && js::GetProxyHandler(obj) == DOMProxyHandler::getInstance();
}

MOZ_ALWAYS_INLINE nsPluginElement*
UnwrapProxy(JSObject* obj)
{
  MOZ_ASSERT(js::IsProxy(obj));
  if (js::GetProxyHandler(obj) != DOMProxyHandler::getInstance()) {
    MOZ_ASSERT(xpc::WrapperFactory::IsXrayWrapper(obj));
    obj = js::UncheckedUnwrap(obj);
  }
  MOZ_ASSERT(IsProxy(obj));
  return static_cast<nsPluginElement*>(js::GetProxyReservedSlot(obj, DOM_OBJECT_SLOT).toPrivate());
}

bool
DOMProxyHandler::getOwnPropDescriptor(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool ignoreNamedProps, JS::MutableHandle<JS::PropertyDescriptor> desc) const
{
  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);
  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    nsPluginElement* self = UnwrapProxy(proxy);
    bool found = false;
    auto result(StrongOrRawPtr<nsMimeType>(self->IndexedGetter(index, found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {
      if (!result) {
        desc.value().setNull();
        FillPropertyDescriptor(desc, proxy, true);
        return true;
      }
      if (!GetOrCreateDOMReflector(cx, result, desc.value())) {
        MOZ_ASSERT(JS_IsExceptionPending(cx));
        return false;
      }
      FillPropertyDescriptor(desc, proxy, true);
      return true;
    }
  }

  JS::Rooted<JSObject*> expando(cx);
  if (!isXray && (expando = GetExpandoObject(proxy))) {
    if (!JS_GetOwnPropertyDescriptorById(cx, expando, id, desc)) {
      return false;
    }
    if (desc.object()) {
      // Pretend the property lives on the wrapper.
      desc.object().set(proxy);
      return true;
    }
  }

  bool callNamedGetter = false;
  if (!IsArrayIndex(index) && !ignoreNamedProps) {
    bool hasOnProto;
    if (!HasPropertyOnPrototype(cx, proxy, id, &hasOnProto)) {
      return false;
    }
    callNamedGetter = !hasOnProto;
  }
  if (callNamedGetter) {
    FakeString name;
    bool isSymbol;
    if (!ConvertIdToString(cx, id, name, isSymbol)) {
      return false;
    }
    if (!isSymbol) {
      nsPluginElement* self = UnwrapProxy(proxy);
      bool found = false;
      auto result(StrongOrRawPtr<nsMimeType>(self->NamedGetter(NonNullHelper(Constify(name)), found)));
      MOZ_ASSERT(!JS_IsExceptionPending(cx));

      if (found) {
        if (!result) {
          desc.value().setNull();
          FillPropertyDescriptor(desc, proxy, true, false);
          return true;
        }
        if (!GetOrCreateDOMReflector(cx, result, desc.value())) {
          MOZ_ASSERT(JS_IsExceptionPending(cx));
          return false;
        }
        FillPropertyDescriptor(desc, proxy, true, false);
        return true;
      }
    }
  }

  desc.object().set(nullptr);
  return true;
}

bool
DOMProxyHandler::defineProperty(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::Handle<JS::PropertyDescriptor> desc, JS::ObjectOpResult& opresult, bool* defined) const
{
  if (IsArrayIndex(GetArrayIndexFromId(cx, id))) {
    *defined = true;
    return opresult.failNoIndexedSetter();
  }
  bool found = false;
  FakeString name;
  bool isSymbol;
  if (!ConvertIdToString(cx, id, name, isSymbol)) {
    return false;
  }
  if (!isSymbol) {
    nsPluginElement* self = UnwrapProxy(proxy);
    auto result(StrongOrRawPtr<nsMimeType>(self->NamedGetter(NonNullHelper(Constify(name)), found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    (void)result;
  }

  if (found) {
    *defined = true;
    return opresult.failNoNamedSetter();
  }
  return mozilla::dom::DOMProxyHandler::defineProperty(cx, proxy, id, desc, opresult, defined);
}


bool
DOMProxyHandler::ownPropNames(JSContext* cx, JS::Handle<JSObject*> proxy, unsigned flags, JS::AutoIdVector& props) const
{
  bool isXray = xpc::WrapperFactory::IsXrayWrapper(proxy);

  uint32_t length = UnwrapProxy(proxy)->Length();
  MOZ_ASSERT(int32_t(length) >= 0);
  for (int32_t i = 0; i < int32_t(length); ++i) {
    if (!props.append(INT_TO_JSID(i))) {
      return false;
    }
  }

  if (flags & JSITER_HIDDEN) {
    nsTArray<nsString> names;
    UnwrapProxy(proxy)->GetSupportedNames(names);
    if (!AppendNamedPropertyIds(cx, proxy, names, false, props)) {
      return false;
    }
  }

  JS::Rooted<JSObject*> expando(cx);
  if (!isXray && (expando = DOMProxyHandler::GetExpandoObject(proxy)) &&
      !js::GetPropertyKeys(cx, expando, flags, &props)) {
    return false;
  }

  return true;
}

bool
DOMProxyHandler::hasOwn(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, bool* bp) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    bool found = false;
    nsPluginElement* self = UnwrapProxy(proxy);
    auto result(StrongOrRawPtr<nsMimeType>(self->IndexedGetter(index, found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    (void)result;

    *bp = found;
    return true;
  }


  JS::Rooted<JSObject*> expando(cx, GetExpandoObject(proxy));
  if (expando) {
    bool b = true;
    bool ok = JS_HasPropertyById(cx, expando, id, &b);
    *bp = !!b;
    if (!ok || *bp) {
      return ok;
    }
  }

  bool hasOnProto;
  if (!HasPropertyOnPrototype(cx, proxy, id, &hasOnProto)) {
    return false;
  }
  if (!hasOnProto) {
    bool found = false;
    FakeString name;
    bool isSymbol;
    if (!ConvertIdToString(cx, id, name, isSymbol)) {
      return false;
    }
    if (!isSymbol) {
      nsPluginElement* self = UnwrapProxy(proxy);
      auto result(StrongOrRawPtr<nsMimeType>(self->NamedGetter(NonNullHelper(Constify(name)), found)));
      MOZ_ASSERT(!JS_IsExceptionPending(cx));
      (void)result;
    }

    *bp = found;
    return true;
  }
  *bp = false;
  return true;
}

bool
DOMProxyHandler::get(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<JS::Value> receiver, JS::Handle<jsid> id, JS::MutableHandle<JS::Value> vp) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
              "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    nsPluginElement* self = UnwrapProxy(proxy);
    bool found = false;
    auto result(StrongOrRawPtr<nsMimeType>(self->IndexedGetter(index, found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    if (found) {
      if (!result) {
        vp.setNull();
        return true;
      }
      if (!GetOrCreateDOMReflector(cx, result, vp)) {
        MOZ_ASSERT(JS_IsExceptionPending(cx));
        return false;
      }
      return true;
    }
    // Even if we don't have this index, we don't forward the
    // get on to our expando object.
  } else {
    { // Scope for expando
      JS::Rooted<JSObject*> expando(cx, DOMProxyHandler::GetExpandoObject(proxy));
      if (expando) {
        bool hasProp;
        if (!JS_HasPropertyById(cx, expando, id, &hasProp)) {
          return false;
        }

        if (hasProp) {
          // Forward the get to the expando object, but our receiver is whatever our
          // receiver is.
          return JS_ForwardGetPropertyTo(cx, expando, id, receiver, vp);
        }
      }
    }
  }

  bool foundOnPrototype;
  if (!GetPropertyOnPrototype(cx, proxy, receiver, id, &foundOnPrototype, vp)) {
    return false;
  }

  if (foundOnPrototype) {
    return true;
  }

  if (!IsArrayIndex(index)) {
    FakeString name;
    bool isSymbol;
    if (!ConvertIdToString(cx, id, name, isSymbol)) {
      return false;
    }
    if (!isSymbol) {
      nsPluginElement* self = UnwrapProxy(proxy);
      bool found = false;
      auto result(StrongOrRawPtr<nsMimeType>(self->NamedGetter(NonNullHelper(Constify(name)), found)));
      MOZ_ASSERT(!JS_IsExceptionPending(cx));

      if (found) {
        if (!result) {
          vp.setNull();
          return true;
        }
        if (!GetOrCreateDOMReflector(cx, result, vp)) {
          MOZ_ASSERT(JS_IsExceptionPending(cx));
          return false;
        }
        return true;
      }
    }
  }

  vp.setUndefined();
  return true;
}

const char*
DOMProxyHandler::className(JSContext* cx, JS::Handle<JSObject*> proxy) const
{
  return "Plugin";
}

bool
DOMProxyHandler::finalizeInBackground(const JS::Value& priv) const
{
  return false;
}

void
DOMProxyHandler::finalize(JSFreeOp* fop, JSObject* proxy) const
{
  nsPluginElement* self = UnwrapPossiblyNotInitializedDOMObject<nsPluginElement>(proxy);
  if (self) {
    ClearWrapper(self, self, proxy);
    AddForDeferredFinalization<nsPluginElement>(self);
  }
}

const DOMProxyHandler*
DOMProxyHandler::getInstance()
{
  static const DOMProxyHandler instance;
  return &instance;
}

bool
DOMProxyHandler::delete_(JSContext* cx, JS::Handle<JSObject*> proxy, JS::Handle<jsid> id, JS::ObjectOpResult& opresult) const
{
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
            "Should not have a XrayWrapper here");

  uint32_t index = GetArrayIndexFromId(cx, id);
  if (IsArrayIndex(index)) {
    bool deleteSucceeded;
    bool found = false;
    nsPluginElement* self = UnwrapProxy(proxy);
    auto result(StrongOrRawPtr<nsMimeType>(self->IndexedGetter(index, found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));
    (void)result;
    deleteSucceeded = !found;
    return deleteSucceeded ? opresult.succeed() : opresult.failCantDelete();
  }
  // Try named delete only if the named property visibility
  // algorithm says the property is visible.
  bool tryNamedDelete = true;
  { // Scope for expando
    JS::Rooted<JSObject*> expando(cx, DOMProxyHandler::GetExpandoObject(proxy));
    if (expando) {
      bool hasProp;
      if (!JS_HasPropertyById(cx, expando, id, &hasProp)) {
        return false;
      }
      tryNamedDelete = !hasProp;
    }
  }
  if (tryNamedDelete) {
    bool hasOnProto;
    if (!HasPropertyOnPrototype(cx, proxy, id, &hasOnProto)) {
      return false;
    }
    tryNamedDelete = !hasOnProto;
  }
  if (tryNamedDelete) {
    bool found = false;
    bool deleteSucceeded;
    FakeString name;
    bool isSymbol;
    if (!ConvertIdToString(cx, id, name, isSymbol)) {
      return false;
    }
    if (!isSymbol) {
      nsPluginElement* self = UnwrapProxy(proxy);
      auto result(StrongOrRawPtr<nsMimeType>(self->NamedGetter(NonNullHelper(Constify(name)), found)));
      MOZ_ASSERT(!JS_IsExceptionPending(cx));
      (void)result;
    }
    deleteSucceeded = !found;
    if (found) {
      return deleteSucceeded ? opresult.succeed() : opresult.failCantDelete();
    }
  }

  return dom::DOMProxyHandler::delete_(cx, proxy, id, opresult);
}

bool
DOMProxyHandler::getElements(JSContext* cx, JS::Handle<JSObject*> proxy, uint32_t begin, uint32_t end, js::ElementAdder* adder) const
{
  JS::Rooted<JS::Value> temp(cx);
  MOZ_ASSERT(!xpc::WrapperFactory::IsXrayWrapper(proxy),
             "Should not have a XrayWrapper here");

  nsPluginElement* self = UnwrapProxy(proxy);
  uint32_t length = self->Length();
  // Compute the end of the indices we'll get ourselves
  uint32_t ourEnd = std::max(begin, std::min(end, length));

  for (uint32_t index = begin; index < ourEnd; ++index) {
    bool found = false;
    auto result(StrongOrRawPtr<nsMimeType>(self->IndexedGetter(index, found)));
    MOZ_ASSERT(!JS_IsExceptionPending(cx));

    MOZ_ASSERT(found);
    if (!result) {
      temp.setNull();
      if (!adder->append(cx, temp)) return false;
      continue;
    }
    if (!GetOrCreateDOMReflector(cx, result, &temp)) {
      MOZ_ASSERT(JS_IsExceptionPending(cx));
      return false;
    }
    if (!adder->append(cx, temp)) return false;
    continue;
  }

  if (end > ourEnd) {
    JS::Rooted<JSObject*> proto(cx);
    if (!js::GetObjectProto(cx, proxy, &proto)) {
      return false;
    }
    return js::GetElementsWithAdder(cx, proto, proxy, ourEnd, end, adder);
  }

  return true;
}

size_t
DOMProxyHandler::objectMoved(JSObject* obj, JSObject* old) const
{
  nsPluginElement* self = UnwrapPossiblyNotInitializedDOMObject<nsPluginElement>(obj);
  if (self) {
    UpdateWrapper(self, self, obj, old);
  }

  return 0;
}

static const DOMJSClass sClass = {
  PROXY_CLASS_DEF("Plugin",
                  JSCLASS_IS_DOMJSCLASS | JSCLASS_HAS_RESERVED_SLOTS(1)),
  { prototypes::id::Plugin, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count, prototypes::id::_ID_Count },
  IsBaseOf<nsISupports, nsPluginElement >::value,
  sNativePropertyHooks,
  FindAssociatedGlobalForNative<nsPluginElement>::Get,
  GetProtoObjectHandle,
  GetCCParticipant<nsPluginElement>::Get()
};

bool
Wrap(JSContext* aCx, nsPluginElement* aObject, nsWrapperCache* aCache, JS::Handle<JSObject*> aGivenProto, JS::MutableHandle<JSObject*> aReflector)
{
  static_assert(!IsBaseOf<NonRefcountedDOMObject, nsPluginElement>::value,
                "Shouldn't have wrappercached things that are not refcounted.");
  MOZ_ASSERT(static_cast<nsPluginElement*>(aObject) ==
             reinterpret_cast<nsPluginElement*>(aObject),
             "Multiple inheritance for nsPluginElement is broken.");
  MOZ_ASSERT(ToSupportsIsCorrect(aObject));
  MOZ_ASSERT_IF(aGivenProto, js::IsObjectInContextCompartment(aGivenProto, aCx));
  MOZ_ASSERT(!aCache->GetWrapper(),
             "You should probably not be using Wrap() directly; use "
             "GetOrCreateDOMReflector instead");

  MOZ_ASSERT(ToSupportsIsOnPrimaryInheritanceChain(aObject, aCache),
             "nsISupports must be on our primary inheritance chain");

  JS::Rooted<JSObject*> global(aCx, FindAssociatedGlobal(aCx, aObject->GetParentObject()));
  if (!global) {
    return false;
  }
  MOZ_ASSERT(JS_IsGlobalObject(global));
  MOZ_ASSERT(JS::ObjectIsNotGray(global));

  // That might have ended up wrapping us already, due to the wonders
  // of XBL.  Check for that, and bail out as needed.
  aReflector.set(aCache->GetWrapper());
  if (aReflector) {
#ifdef DEBUG
    AssertReflectorHasGivenProto(aCx, aReflector, aGivenProto);
#endif // DEBUG
    return true;
  }

  JSAutoRealm ar(aCx, global);
  JS::Handle<JSObject*> canonicalProto = GetProtoObjectHandle(aCx);
  if (!canonicalProto) {
    return false;
  }
  JS::Rooted<JSObject*> proto(aCx);
  if (aGivenProto) {
    proto = aGivenProto;
    // Unfortunately, while aGivenProto was in the compartment of aCx
    // coming in, we changed compartments to that of "parent" so may need
    // to wrap the proto here.
    if (js::GetContextCompartment(aCx) != js::GetObjectCompartment(proto)) {
      if (!JS_WrapObject(aCx, &proto)) {
        return false;
      }
    }
  } else {
    proto = canonicalProto;
  }

  BindingJSObjectCreator<nsPluginElement> creator(aCx);
  creator.CreateProxyObject(aCx, &sClass.mBase, DOMProxyHandler::getInstance(),
                            proto, aObject, JS::UndefinedHandleValue, aReflector);
  if (!aReflector) {
    return false;
  }

  aCache->SetWrapper(aReflector);
  creator.InitializationSucceeded();

  MOZ_ASSERT(aCache->GetWrapperPreserveColor() &&
             aCache->GetWrapperPreserveColor() == aReflector);
  // If proto != canonicalProto, we have to preserve our wrapper;
  // otherwise we won't be able to properly recreate it later, since
  // we won't know what proto to use.  Note that we don't check
  // aGivenProto here, since it's entirely possible (and even
  // somewhat common) to have a non-null aGivenProto which is the
  // same as canonicalProto.
  if (proto != canonicalProto) {
    PreserveWrapper(aObject);
  }

  return true;
}

static bool
ResolveOwnProperty(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::Handle<jsid> id, JS::MutableHandle<JS::PropertyDescriptor> desc)
{
  return js::GetProxyHandler(obj)->getOwnPropertyDescriptor(cx, wrapper, id, desc);
}

static bool
EnumerateOwnProperties(JSContext* cx, JS::Handle<JSObject*> wrapper, JS::Handle<JSObject*> obj, JS::AutoIdVector& props)
{
  return js::GetProxyHandler(obj)->ownPropertyKeys(cx, wrapper, props);
}

const NativePropertyHooks sNativePropertyHooks[] = { {
  ResolveOwnProperty,
  EnumerateOwnProperties,
  nullptr,
  { sNativeProperties.Upcast(), nullptr },
  prototypes::id::Plugin,
  constructors::id::Plugin,
  nullptr,
  &DefaultXrayExpandoObjectClass
} };

void
CreateInterfaceObjects(JSContext* aCx, JS::Handle<JSObject*> aGlobal, ProtoAndIfaceCache& aProtoAndIfaceCache, bool aDefineOnGlobal)
{
  JS::Rooted<JSObject*> parentProto(aCx, JS::GetRealmObjectPrototype(aCx));
  if (!parentProto) {
    return;
  }

  JS::Rooted<JSObject*> constructorProto(aCx, JS::GetRealmFunctionPrototype(aCx));
  if (!constructorProto) {
    return;
  }

  static bool sIdsInited = false;
  if (!sIdsInited && NS_IsMainThread()) {
    if (!InitIds(aCx, sNativeProperties.Upcast())) {
      return;
    }
    sIdsInited = true;
  }

  JS::Heap<JSObject*>* protoCache = &aProtoAndIfaceCache.EntrySlotOrCreate(prototypes::id::Plugin);
  JS::Heap<JSObject*>* interfaceCache = &aProtoAndIfaceCache.EntrySlotOrCreate(constructors::id::Plugin);
  dom::CreateInterfaceObjects(aCx, aGlobal, parentProto,
                              &sPrototypeClass.mBase, protoCache,
                              nullptr,
                              constructorProto, &sInterfaceObjectClass.mBase, 0, nullptr,
                              interfaceCache,
                              sNativeProperties.Upcast(),
                              nullptr,
                              "Plugin", aDefineOnGlobal,
                              nullptr,
                              false);
}

JSObject*
GetConstructorObject(JSContext* aCx)
{
  return GetConstructorObjectHandle(aCx);
}

} // namespace Plugin_Binding



} // namespace dom
} // namespace mozilla

Coverage Report

Created: 2018-09-25 14:53