third_party/WebKit/Source/core/frame/csp/MediaListDirective.h

// Copyright 2014 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.

#ifndef MediaListDirective_h
#define MediaListDirective_h

#include "core/frame/csp/CSPDirective.h"
#include "platform/network/ContentSecurityPolicyParsers.h"
#include "wtf/HashSet.h"
#include "wtf/text/WTFString.h"

namespace blink {

class ContentSecurityPolicy;

class CORE_EXPORT MediaListDirective final : public CSPDirective {
  WTF_MAKE_NONCOPYABLE(MediaListDirective);

 public:
  MediaListDirective(const String& name,
                     const String& value,
                     ContentSecurityPolicy*);
  bool allows(const String& type);

  // The algorothm is described more extensively here:
  // https://w3c.github.io/webappsec-csp/embedded/#subsume-policy.
  bool subsumes(const std::vector<MediaListDirective*>& other);

 private:
  FRIEND_TEST_ALL_PREFIXES(MediaListDirectiveTest, GetIntersect);
  FRIEND_TEST_ALL_PREFIXES(MediaListDirectiveTest, Subsumes);

  void parse(const UChar* begin, const UChar* end);

  // The algorothm is described more extensively here:
  // https://w3c.github.io/webappsec-csp/embedded/#subsume-policy.
  HashSet<String> getIntersect(const HashSet<String>& other);

  HashSet<String> m_pluginTypes;
};

}  // namespace blink

#endif