chromium/third_party/blink/renderer/modules/mediasession/media_metadata_sanitizer.cc

// 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.

#include "third_party/blink/renderer/modules/mediasession/media_metadata_sanitizer.h"

#include "third_party/blink/public/mojom/mediasession/media_session.mojom-blink.h"
#include "third_party/blink/public/platform/web_icon_sizes_parser.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/renderer/bindings/modules/v8/v8_media_image.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/modules/mediasession/chapter_information.h"
#include "third_party/blink/renderer/modules/mediasession/media_metadata.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/wtf/text/string_operators.h"
#include "url/url_constants.h"

namespace blink {

namespace {

// Constants used by the sanitizer, must be consistent with
// content::MediaMetdataSanitizer.

// Maximum length of all strings inside MediaMetadata when it is sent over mojo.
const size_t kMaxStringLength = …;

// Maximum type length of MediaImage, which conforms to RFC 4288
// (https://tools.ietf.org/html/rfc4288).
const size_t kMaxImageTypeLength = …;

// Maximum number of MediaImages inside the MediaMetadata.
const size_t kMaxNumberOfMediaImages = …;

// Maximum number of `ChapterInformation` inside the `MediaMetadata`.
const size_t kMaxNumberOfChapters = …;

// Maximum of sizes in a MediaImage.
const size_t kMaxNumberOfImageSizes = …;

bool CheckMediaImageSrcSanity(const KURL& src, ExecutionContext* context) { … }

// Sanitize MediaImage and do mojo serialization. Returns null when
// |image.src()| is bad.
media_session::mojom::blink::MediaImagePtr SanitizeMediaImageAndConvertToMojo(
    const MediaImage* image,
    ExecutionContext* context) { … }

// Sanitize ChapterInformation and do mojo serialization.
media_session::mojom::blink::ChapterInformationPtr
SanitizeChapterInformationAndConvertToMojo(const ChapterInformation* chapter,
                                           ExecutionContext* context) { … }

}  // anonymous namespace

blink::mojom::blink::SpecMediaMetadataPtr
MediaMetadataSanitizer::SanitizeAndConvertToMojo(const MediaMetadata* metadata,
                                                 ExecutionContext* context) { … }

}  // namespace blink