| /* |
| * Copyright (C) 2009 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "third_party/blink/renderer/platform/bindings/v8_dom_wrapper.h" |
| |
| #include "third_party/blink/renderer/platform/bindings/v8_binding.h" |
| #include "third_party/blink/renderer/platform/bindings/v8_object_constructor.h" |
| #include "third_party/blink/renderer/platform/bindings/v8_per_context_data.h" |
| #include "third_party/blink/renderer/platform/bindings/v8_per_isolate_data.h" |
| |
| namespace blink { |
| |
| v8::Local<v8::Object> V8DOMWrapper::CreateWrapper( |
| v8::Isolate* isolate, |
| v8::Local<v8::Object> creation_context, |
| const WrapperTypeInfo* type) { |
| RUNTIME_CALL_TIMER_SCOPE(isolate, |
| RuntimeCallStats::CounterId::kCreateWrapper); |
| |
| // TODO(adithyas): We should abort wrapper creation if the context access |
| // check fails and throws an exception. |
| V8WrapperInstantiationScope scope(creation_context, isolate, type); |
| CHECK(!scope.AccessCheckFailed()); |
| |
| V8PerContextData* per_context_data = |
| V8PerContextData::From(scope.GetContext()); |
| v8::Local<v8::Object> wrapper; |
| if (per_context_data) { |
| wrapper = per_context_data->CreateWrapperFromCache(type); |
| CHECK(!wrapper.IsEmpty()); |
| } else { |
| // The context is detached, but still accessible. |
| // TODO(yukishiino): This code does not create a wrapper with |
| // the correct settings. Should follow the same way as |
| // V8PerContextData::createWrapperFromCache, though there is no need to |
| // cache resulting objects or their constructors. |
| const DOMWrapperWorld& world = DOMWrapperWorld::World(scope.GetContext()); |
| wrapper = type->DomTemplate(isolate, world) |
| ->InstanceTemplate() |
| ->NewInstance(scope.GetContext()) |
| .ToLocalChecked(); |
| } |
| return wrapper; |
| } |
| |
| bool V8DOMWrapper::IsWrapper(v8::Isolate* isolate, v8::Local<v8::Value> value) { |
| if (value.IsEmpty() || !value->IsObject()) |
| return false; |
| |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value); |
| if (!object->IsApiWrapper()) |
| return false; |
| |
| if (object->InternalFieldCount() < kV8DefaultWrapperInternalFieldCount) |
| return false; |
| |
| const WrapperTypeInfo* untrusted_wrapper_type_info = |
| ToWrapperTypeInfo(object); |
| V8PerIsolateData* per_isolate_data = V8PerIsolateData::From(isolate); |
| if (!(untrusted_wrapper_type_info && per_isolate_data)) |
| return false; |
| return per_isolate_data->HasInstance(untrusted_wrapper_type_info, object); |
| } |
| |
| bool V8DOMWrapper::HasInternalFieldsSet(v8::Local<v8::Value> value) { |
| if (value.IsEmpty() || !value->IsObject()) |
| return false; |
| |
| v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(value); |
| if (!object->IsApiWrapper()) |
| return false; |
| |
| if (object->InternalFieldCount() < kV8DefaultWrapperInternalFieldCount) |
| return false; |
| |
| // The untyped wrappable can either be ScriptWrappable or CustomWrappable. |
| const void* untrused_wrappable = ToUntypedWrappable(object); |
| const WrapperTypeInfo* untrusted_wrapper_type_info = |
| ToWrapperTypeInfo(object); |
| return untrused_wrappable && untrusted_wrapper_type_info && |
| untrusted_wrapper_type_info->gin_embedder == gin::kEmbedderBlink; |
| } |
| |
| } // namespace blink |