| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "third_party/blink/renderer/platform/loader/fetch/cached_metadata.h" |
| |
| #include "third_party/blink/renderer/platform/loader/fetch/url_loader/cached_metadata_handler.h" |
| |
| namespace blink { |
| |
| scoped_refptr<CachedMetadata> CachedMetadata::CreateFromSerializedData( |
| const uint8_t* data, |
| size_t size) { |
| if (size > std::numeric_limits<wtf_size_t>::max()) |
| return nullptr; |
| Vector<uint8_t> copied_data; |
| copied_data.Append(data, static_cast<wtf_size_t>(size)); |
| return CreateFromSerializedData(std::move(copied_data)); |
| } |
| |
| scoped_refptr<CachedMetadata> CachedMetadata::CreateFromSerializedData( |
| Vector<uint8_t> data) { |
| // Ensure the data is big enough, otherwise discard the data. |
| if (data.size() < kCachedMetaDataStart) |
| return nullptr; |
| // Ensure the marker matches, otherwise discard the data. |
| if (*reinterpret_cast<const uint32_t*>(data.data()) != |
| CachedMetadataHandler::kSingleEntry) { |
| return nullptr; |
| } |
| return base::AdoptRef(new CachedMetadata(std::move(data))); |
| } |
| |
| scoped_refptr<CachedMetadata> CachedMetadata::CreateFromSerializedData( |
| mojo_base::BigBuffer data) { |
| // Ensure the data is big enough, otherwise discard the data. |
| if (data.size() < kCachedMetaDataStart) |
| return nullptr; |
| // Ensure the marker matches, otherwise discard the data. |
| if (*reinterpret_cast<const uint32_t*>(data.data()) != |
| CachedMetadataHandler::kSingleEntry) { |
| return nullptr; |
| } |
| return base::AdoptRef(new CachedMetadata(std::move(data))); |
| } |
| |
| CachedMetadata::CachedMetadata(Vector<uint8_t> data) { |
| // Serialized metadata should have non-empty data. |
| DCHECK_GT(data.size(), kCachedMetaDataStart); |
| DCHECK(!data.IsEmpty()); |
| // Make sure that the first int in the data is the single entry marker. |
| CHECK_EQ(*reinterpret_cast<const uint32_t*>(data.data()), |
| CachedMetadataHandler::kSingleEntry); |
| |
| vector_ = std::move(data); |
| } |
| |
| CachedMetadata::CachedMetadata(uint32_t data_type_id, |
| const uint8_t* data, |
| wtf_size_t size) { |
| // Don't allow an ID of 0, it is used internally to indicate errors. |
| DCHECK(data_type_id); |
| DCHECK(data); |
| |
| vector_ = CachedMetadata::GetSerializedDataHeader(data_type_id, size); |
| vector_.Append(data, size); |
| } |
| |
| CachedMetadata::CachedMetadata(mojo_base::BigBuffer data) { |
| // Serialized metadata should have non-empty data. |
| DCHECK_GT(data.size(), kCachedMetaDataStart); |
| // Make sure that the first int in the data is the single entry marker. |
| CHECK_EQ(*reinterpret_cast<const uint32_t*>(data.data()), |
| CachedMetadataHandler::kSingleEntry); |
| |
| buffer_ = std::move(data); |
| } |
| |
| } // namespace blink |