chromium/third_party/blink/renderer/core/loader/alternate_signed_exchange_resource_info.cc

// Copyright 2019 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/core/loader/alternate_signed_exchange_resource_info.h"

#include "media/media_buildflags.h"
#include "net/http/http_request_headers.h"
#include "services/network/public/cpp/constants.h"
#include "services/network/public/mojom/fetch_api.mojom-shared.h"
#include "third_party/blink/public/common/loader/network_utils.h"
#include "third_party/blink/public/common/web_package/signed_exchange_consts.h"
#include "third_party/blink/public/common/web_package/web_package_request_matcher.h"
#include "third_party/blink/public/mojom/fetch/fetch_api_request.mojom-blink.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource.h"
#include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h"
#include "third_party/blink/renderer/platform/loader/link_header.h"
#include "third_party/blink/renderer/platform/wtf/hash_functions.h"
#include "third_party/blink/renderer/platform/wtf/text/string_hash.h"

namespace blink {

namespace {

constexpr char kAlternate[] = …;
constexpr char kAllowedAltSxg[] = …;

AlternateSignedExchangeMachingKey;

AlternateSignedExchangeMachingKey MakeKey(const String& anchor,
                                          const String& variants,
                                          const String& variant_key) { … }

void AddAlternateUrlIfValid(
    const LinkHeader& header,
    HashMap<AlternateSignedExchangeMachingKey, KURL>* alternate_urls) { … }

std::unique_ptr<AlternateSignedExchangeResourceInfo::Entry>
CreateEntryForLinkHeaderIfValid(
    const LinkHeader& header,
    const HashMap<AlternateSignedExchangeMachingKey, KURL>& alternate_urls) { … }

}  // namespace

std::unique_ptr<AlternateSignedExchangeResourceInfo>
AlternateSignedExchangeResourceInfo::CreateIfValid(
    const String& outer_link_header,
    const String& inner_link_header) { … }

AlternateSignedExchangeResourceInfo::AlternateSignedExchangeResourceInfo(
    EntryMap alternative_resources)
    : … { … }

AlternateSignedExchangeResourceInfo::Entry*
AlternateSignedExchangeResourceInfo::FindMatchingEntry(
    const KURL& url,
    std::optional<ResourceType> resource_type,
    const Vector<String>& languages) const { … }

AlternateSignedExchangeResourceInfo::Entry*
AlternateSignedExchangeResourceInfo::FindMatchingEntry(
    const KURL& url,
    network::mojom::RequestDestination request_destination,
    const Vector<String>& languages) const { … }

AlternateSignedExchangeResourceInfo::Entry*
AlternateSignedExchangeResourceInfo::FindMatchingEntry(
    const KURL& url,
    const char* accept_header,
    const Vector<String>& languages) const { … }

}  // namespace blink