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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 
vendor_id()55   const uint16& vendor_id() const { return vendor_id_; }
product_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.
vendor_id()60   uint16& vendor_id() { return vendor_id_; }
product_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