v8_script_value_deserializer.cc | Explore in Territory

// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_deserializer.h"

#include <limits>
#include <optional>

#include "base/feature_list.h"
#include "base/numerics/checked_math.h"
#include "base/time/time.h"
#include "third_party/blink/public/common/fenced_frame/fenced_frame_utils.h"
#include "third_party/blink/public/platform/web_blob_info.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/serialization_tag.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/trailer_reader.h"
#include "third_party/blink/renderer/bindings/core/v8/serialization/unpacked_serialized_script_value.h"
#include "third_party/blink/renderer/bindings/core/v8/to_v8_traits.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_blob.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_exception.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_matrix.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_matrix_read_only.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_point.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_point_init.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_point_read_only.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_quad.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_rect.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_dom_rect_read_only.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_fenced_frame_config.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_file.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_file_list.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_image_bitmap.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_image_data.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_message_port.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_mojo_handle.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_offscreen_canvas.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_readable_stream.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_transform_stream.h"
#include "third_party/blink/renderer/bindings/core/v8/v8_writable_stream.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/fileapi/blob.h"
#include "third_party/blink/renderer/core/fileapi/file.h"
#include "third_party/blink/renderer/core/fileapi/file_list.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/core/geometry/dom_matrix.h"
#include "third_party/blink/renderer/core/geometry/dom_matrix_read_only.h"
#include "third_party/blink/renderer/core/geometry/dom_point.h"
#include "third_party/blink/renderer/core/geometry/dom_point_read_only.h"
#include "third_party/blink/renderer/core/geometry/dom_quad.h"
#include "third_party/blink/renderer/core/geometry/dom_rect.h"
#include "third_party/blink/renderer/core/geometry/dom_rect_read_only.h"
#include "third_party/blink/renderer/core/html/canvas/image_data.h"
#include "third_party/blink/renderer/core/html/fenced_frame/fenced_frame_config.h"
#include "third_party/blink/renderer/core/imagebitmap/image_bitmap.h"
#include "third_party/blink/renderer/core/inspector/inspector_audits_issue.h"
#include "third_party/blink/renderer/core/messaging/message_port.h"
#include "third_party/blink/renderer/core/mojo/mojo_handle.h"
#include "third_party/blink/renderer/core/offscreencanvas/offscreen_canvas.h"
#include "third_party/blink/renderer/core/streams/readable_stream.h"
#include "third_party/blink/renderer/core/streams/readable_stream_transferring_optimizer.h"
#include "third_party/blink/renderer/core/streams/transform_stream.h"
#include "third_party/blink/renderer/core/streams/writable_stream.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_shared_array_buffer.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/file_metadata.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/runtime_enabled_features.h"
#include "third_party/blink/renderer/platform/wtf/date_math.h"

namespace blink {

namespace {

// The "Blink-side" serialization version, which defines how Blink will behave
// during the serialization process. The serialization format has two
// "envelopes": an outer one controlled by Blink and an inner one by V8.
//
// They are formatted as follows:
// [version tag] [Blink version] [version tag] [v8 version] ...
//
// Before version 16, there was only a single envelope and the version number
// for both parts was always equal.
//
// See also V8ScriptValueDeserializer.cpp.
const uint32_t kMinVersionForSeparateEnvelope = …;

// Returns the number of bytes consumed reading the Blink version envelope, and
// sets |*version| to the version. If no Blink envelope was detected, zero is
// returned.
size_t ReadVersionEnvelope(SerializedScriptValue* serialized_script_value,
                           uint32_t* out_version) { … }

MessagePort* CreateEntangledPort(ScriptState* script_state,
                                 const MessagePortChannel& channel) { … }

}  // namespace

V8ScriptValueDeserializer::V8ScriptValueDeserializer(
    ScriptState* script_state,
    UnpackedSerializedScriptValue* unpacked_value,
    const Options& options)
    : … { … }

V8ScriptValueDeserializer::V8ScriptValueDeserializer(
    ScriptState* script_state,
    scoped_refptr<SerializedScriptValue> value,
    const Options& options)
    : … { … }

V8ScriptValueDeserializer::V8ScriptValueDeserializer(
    ScriptState* script_state,
    UnpackedSerializedScriptValue* unpacked_value,
    scoped_refptr<SerializedScriptValue> value,
    const Options& options)
    : … { … }

v8::Local<v8::Value> V8ScriptValueDeserializer::Deserialize() { … }

void V8ScriptValueDeserializer::Transfer() { … }

bool V8ScriptValueDeserializer::ReadUnguessableToken(
    base::UnguessableToken* token_out) { … }

bool V8ScriptValueDeserializer::ReadUTF8String(String* string) { … }

ScriptWrappable* V8ScriptValueDeserializer::ReadDOMObject(
    SerializationTag tag,
    ExceptionState& exception_state) { … }

File* V8ScriptValueDeserializer::ReadFile() { … }

File* V8ScriptValueDeserializer::ReadFileIndex() { … }

DOMRectReadOnly* V8ScriptValueDeserializer::ReadDOMRectReadOnly() { … }

scoped_refptr<BlobDataHandle>
V8ScriptValueDeserializer::GetOrCreateBlobDataHandle(const String& uuid,
                                                     const String& type,
                                                     uint64_t size) { … }

v8::MaybeLocal<v8::Object> V8ScriptValueDeserializer::ReadHostObject(
    v8::Isolate* isolate) { … }

v8::MaybeLocal<v8::WasmModuleObject>
V8ScriptValueDeserializer::GetWasmModuleFromId(v8::Isolate* isolate,
                                               uint32_t id) { … }

v8::MaybeLocal<v8::SharedArrayBuffer>
V8ScriptValueDeserializer::GetSharedArrayBufferFromId(v8::Isolate* isolate,
                                                      uint32_t id) { … }

const v8::SharedValueConveyor*
V8ScriptValueDeserializer::GetSharedValueConveyor(v8::Isolate* isolate) { … }

// static
bool V8ScriptValueDeserializer::ExecutionContextExposesInterface(
    ExecutionContext* execution_context,
    SerializationTag interface_tag) { … }

}  // namespace blink
chromium/third_party/blink/renderer/bindings/core/v8/serialization/v8_script_value_deserializer.cc
