chrome_frame/navigation_constraints.h

// Copyright (c) 2010 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 CHROME_FRAME_NAVIGATION_CONSTRAINTS_H_
#define CHROME_FRAME_NAVIGATION_CONSTRAINTS_H_

#include <urlmon.h>
#include <windows.h>

#include "base/win/scoped_comptr.h"
#include "googleurl/src/gurl.h"

// Provides an interface which controls navigation within ChromeFrame.
class NavigationConstraints {
 public:
  virtual ~NavigationConstraints() {}
  virtual bool AllowUnsafeUrls() = 0;
  virtual bool IsSchemeAllowed(const GURL& url) = 0;
  virtual bool IsZoneAllowed(const GURL& url) = 0;
};

// Provides default implementation for the NavigationConstraints interface.
class NavigationConstraintsImpl : public NavigationConstraints {
 public:
  NavigationConstraintsImpl();
  virtual ~NavigationConstraintsImpl() {}

  // NavigationConstraints method overrides.
  virtual bool AllowUnsafeUrls();
  virtual bool IsSchemeAllowed(const GURL& url);
  virtual bool IsZoneAllowed(const GURL& url);

  bool is_privileged() const;
  void set_is_privileged(bool is_privileged);

 private:
  base::win::ScopedComPtr<IInternetSecurityManager> security_manager_;

  // The plugin is privileged if it is:
  // * Invoked by a window running under the system principal in FireFox.
  // * Being hosted by a custom host exposing the SID_ChromeFramePrivileged
  //   service.
  //
  // When privileged, additional interfaces are made available to the user.
  bool is_privileged_;
};

#endif  // CHROME_FRAME_NAVIGATION_CONSTRAINTS_H_