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      1 // Copyright 2014 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 #ifndef EXTENSIONS_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_DATA_H_
      5 #define EXTENSIONS_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_DATA_H_
      6 
      7 #include <string>
      8 
      9 #include "base/basictypes.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "extensions/common/permissions/api_permission.h"
     12 
     13 namespace base {
     14 
     15 class Value;
     16 
     17 }  // namespace base
     18 
     19 namespace extensions {
     20 
     21 // A pattern that can be used to match a USB device permission.
     22 // Should be of the format: vendorId:productId, where both vendorId and
     23 // productId are decimal strings representing uint16 values.
     24 class UsbDevicePermissionData {
     25  public:
     26   enum SpecialInterfaces {
     27     // A special interface id for stating permissions for an entire USB device,
     28     // no specific interface. This value must match value of Rule::ANY_INTERFACE
     29     // from ChromeOS permission_broker project.
     30     ANY_INTERFACE = -1,
     31 
     32     // A special interface id for |Check| to indicate that interface field is
     33     // not to be checked. Not used in manifest file.
     34     UNSPECIFIED_INTERFACE = -2
     35   };
     36 
     37   UsbDevicePermissionData();
     38   UsbDevicePermissionData(uint16 vendor_id,
     39                           uint16 product_id,
     40                           int interface_id);
     41 
     42   // Check if |param| (which must be a UsbDevicePermissionData::CheckParam)
     43   // matches the vendor and product IDs associated with |this|.
     44   bool Check(const APIPermission::CheckParam* param) const;
     45 
     46   // Convert |this| into a base::Value.
     47   scoped_ptr<base::Value> ToValue() const;
     48 
     49   // Populate |this| from a base::Value.
     50   bool FromValue(const base::Value* value);
     51 
     52   bool operator<(const UsbDevicePermissionData& rhs) const;
     53   bool operator==(const UsbDevicePermissionData& rhs) const;
     54 
     55   const uint16& vendor_id() const { return vendor_id_; }
     56   const uint16& product_id() const { return product_id_; }
     57 
     58   // These accessors are provided for IPC_STRUCT_TRAITS_MEMBER.  Please
     59   // think twice before using them for anything else.
     60   uint16& vendor_id() { return vendor_id_; }
     61   uint16& product_id() { return product_id_; }
     62 
     63  private:
     64   uint16 vendor_id_;
     65   uint16 product_id_;
     66   int interface_id_;
     67 };
     68 
     69 }  // namespace extensions
     70 
     71 #endif  // EXTENSIONS_COMMON_PERMISSIONS_USB_DEVICE_PERMISSION_DATA_H_
     72