chrome/common/extensions/permissions/chrome_permission_message_provider.h

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_
   6 #define CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_
   7
   8 #include <set>
   9
  10 #include "base/basictypes.h"
  11 #include "base/gtest_prod_util.h"
  12 #include "base/strings/string16.h"
  13 #include "extensions/common/permissions/permission_message_provider.h"
  14
  15 namespace extensions {
  16
  17 class ChromePermissionMessageProvider : public PermissionMessageProvider {
  18  public:
  19   ChromePermissionMessageProvider();
  20   virtual ~ChromePermissionMessageProvider();
  21
  22   // PermissionMessageProvider implementation.
  23   virtual PermissionMessages GetPermissionMessages(
  24       const PermissionSet* permissions,
  25       Manifest::Type extension_type) const OVERRIDE;
  26   virtual std::vector<base::string16> GetWarningMessages(
  27       const PermissionSet* permissions,
  28       Manifest::Type extension_type) const OVERRIDE;
  29   virtual std::vector<base::string16> GetWarningMessagesDetails(
  30       const PermissionSet* permissions,
  31       Manifest::Type extension_type) const OVERRIDE;
  32   virtual bool IsPrivilegeIncrease(
  33       const PermissionSet* old_permissions,
  34       const PermissionSet* new_permissions,
  35       Manifest::Type extension_type) const OVERRIDE;
  36
  37  private:
  38   // Gets the permission messages for the API permissions.
  39   std::set<PermissionMessage> GetAPIPermissionMessages(
  40       const PermissionSet* permissions) const;
  41
  42   // Gets the permission messages for the Manifest permissions.
  43   std::set<PermissionMessage> GetManifestPermissionMessages(
  44       const PermissionSet* permissions) const;
  45
  46   // Gets the permission messages for the host permissions.
  47   std::set<PermissionMessage> GetHostPermissionMessages(
  48       const PermissionSet* permissions,
  49       Manifest::Type extension_type) const;
  50
  51   // Returns true if |new_permissions| has an elevated API privilege level
  52   // compared to |old_permissions|.
  53   bool IsAPIPrivilegeIncrease(
  54       const PermissionSet* old_permissions,
  55       const PermissionSet* new_permissions) const;
  56
  57   // Returns true if |new_permissions| has an elevated manifest permission
  58   // privilege level compared to |old_permissions|.
  59   bool IsManifestPermissionPrivilegeIncrease(
  60       const PermissionSet* old_permissions,
  61       const PermissionSet* new_permissions) const;
  62
  63   // Returns true if |new_permissions| has more host permissions compared to
  64   // |old_permissions|.
  65   bool IsHostPrivilegeIncrease(
  66       const PermissionSet* old_permissions,
  67       const PermissionSet* new_permissions,
  68       Manifest::Type extension_type) const;
  69
  70   DISALLOW_COPY_AND_ASSIGN(ChromePermissionMessageProvider);
  71 };
  72
  73 }  // namespace extensions
  74
  75 #endif  // CHROME_COMMON_EXTENSIONS_PERMISSIONS_CHROME_PERMISSION_MESSAGE_PROVIDER_H_