content/browser/portal/portal_navigation_throttle.h

// Copyright 2019 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 CONTENT_BROWSER_PORTAL_PORTAL_NAVIGATION_THROTTLE_H_
#define CONTENT_BROWSER_PORTAL_PORTAL_NAVIGATION_THROTTLE_H_

#include <memory>

#include "base/auto_reset.h"
#include "content/common/content_export.h"
#include "content/public/browser/navigation_throttle.h"

namespace content {

// When enabled, restricts navigation within a portal main frame to only the
// origin of its host. This allows a more limited testing mode of the portals
// feature, in which third-party (cross-origin) content cannot be loaded.
//
// This throttle is enabled only when portals are enabled but third-party
// portals are not, and provides enforcement of that state.
//
// Note: This has complicated interactions with portal activation, which are not
// yet resolved. See https://crbug.com/1013389.
class CONTENT_EXPORT PortalNavigationThrottle : public NavigationThrottle {
 public:
  static std::unique_ptr<PortalNavigationThrottle> MaybeCreateThrottleFor(
      NavigationHandle* navigation_handle);

  ~PortalNavigationThrottle() override;

  // NavigationThrottle
  const char* GetNameForLogging() override;
  ThrottleCheckResult WillStartRequest() override;
  ThrottleCheckResult WillRedirectRequest() override;

 private:
  static bool IsEnabled();

  PortalNavigationThrottle(NavigationHandle* navigation_handle);

  ThrottleCheckResult WillStartOrRedirectRequest();
};

}  // namespace content

#endif  // CONTENT_BROWSER_PORTAL_PORTAL_NAVIGATION_THROTTLE_H_