1 //
2 // Copyright (C) 2012 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 //      http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16 
17 #ifndef UPDATE_ENGINE_CONNECTION_MANAGER_H_
18 #define UPDATE_ENGINE_CONNECTION_MANAGER_H_
19 
20 #include <string>
21 
22 #include <base/macros.h>
23 #include <dbus/object_path.h>
24 
25 #include "update_engine/connection_manager_interface.h"
26 #include "update_engine/shill_proxy_interface.h"
27 
28 namespace chromeos_update_engine {
29 
30 class SystemState;
31 
32 // This class implements the concrete class that talks with the connection
33 // manager (shill) over DBus.
34 // TODO(deymo): Remove this class and use ShillProvider from the UpdateManager.
35 class ConnectionManager : public ConnectionManagerInterface {
36  public:
37   // Returns the string representation corresponding to the given
38   // connection type.
39   static const char* StringForConnectionType(NetworkConnectionType type);
40 
41   // Constructs a new ConnectionManager object initialized with the
42   // given system state.
43   ConnectionManager(ShillProxyInterface* shill_proxy,
44                     SystemState* system_state);
45   ~ConnectionManager() override = default;
46 
47   // ConnectionManagerInterface overrides.
48   bool GetConnectionProperties(NetworkConnectionType* out_type,
49                                NetworkTethering* out_tethering) override;
50   bool IsUpdateAllowedOver(NetworkConnectionType type,
51                            NetworkTethering tethering) const override;
52 
53  private:
54   // Returns (via out_path) the default network path, or empty string if
55   // there's no network up. Returns true on success.
56   bool GetDefaultServicePath(dbus::ObjectPath* out_path);
57 
58   bool GetServicePathProperties(const dbus::ObjectPath& path,
59                                 NetworkConnectionType* out_type,
60                                 NetworkTethering* out_tethering);
61 
62   // The mockable interface to access the shill DBus proxies.
63   ShillProxyInterface* shill_proxy_;
64 
65   // The global context for update_engine.
66   SystemState* system_state_;
67 
68   DISALLOW_COPY_AND_ASSIGN(ConnectionManager);
69 };
70 
71 }  // namespace chromeos_update_engine
72 
73 #endif  // UPDATE_ENGINE_CONNECTION_MANAGER_H_
74