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// Copyright (c) 2012 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_BROWSER_EXTENSIONS_PERMISSIONS_UPDATER_H__
#define CHROME_BROWSER_EXTENSIONS_PERMISSIONS_UPDATER_H__
#include <string>
#include "base/memory/ref_counted.h"
namespace base {
class DictionaryValue;
}
namespace content {
class BrowserContext;
}
namespace extensions {
class Extension;
class ExtensionPrefs;
class PermissionSet;
// Updates an Extension's active and granted permissions in persistent storage
// and notifies interested parties of the changes.
class PermissionsUpdater {
public:
explicit PermissionsUpdater(content::BrowserContext* browser_context);
~PermissionsUpdater();
// Adds the set of |permissions| to the |extension|'s active permission set
// and sends the relevant messages and notifications. This method assumes the
// user has already been prompted, if necessary, for the extra permissions.
void AddPermissions(const Extension* extension,
const PermissionSet* permissions);
// Removes the set of |permissions| from the |extension|'s active permission
// set and sends the relevant messages and notifications.
void RemovePermissions(const Extension* extension,
const PermissionSet* permissions);
// Adds all permissions in the |extension|'s active permissions to its
// granted permission set.
void GrantActivePermissions(const Extension* extension);
// Initializes the |extension|'s active permission set to include only
// permissions currently requested by the extension and all the permissions
// required by the extension.
void InitializePermissions(const Extension* extension);
// Grants any withheld all-hosts (or all-hosts-like) permissions.
void GrantWithheldImpliedAllHosts(const Extension* extension);
// Revokes any requests all-hosts (or all-hosts-like) permissions.
void WithholdImpliedAllHosts(const Extension* extension);
private:
enum EventType {
ADDED,
REMOVED,
};
// Sets the |extension|'s active permissions to |active| and records the
// change in the prefs. If |withheld| is non-null, also sets the extension's
// withheld permissions to |withheld|. Otherwise, |withheld| permissions are
// not changed.
void SetPermissions(const Extension* extension,
const scoped_refptr<const PermissionSet>& active,
scoped_refptr<const PermissionSet> withheld);
// Dispatches specified event to the extension.
void DispatchEvent(const std::string& extension_id,
const char* event_name,
const PermissionSet* changed_permissions);
// Issues the relevant events, messages and notifications when the
// |extension|'s permissions have |changed| (|changed| is the delta).
// Specifically, this sends the EXTENSION_PERMISSIONS_UPDATED notification,
// the ExtensionMsg_UpdatePermissions IPC message, and fires the
// onAdded/onRemoved events in the extension.
void NotifyPermissionsUpdated(EventType event_type,
const Extension* extension,
const PermissionSet* changed);
// The associated BrowserContext.
content::BrowserContext* browser_context_;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_PERMISSIONS_UPDATER_H__
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