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      1 //
      2 // Copyright (C) 2015 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 SHILL_DBUS_CHROMEOS_MODEM_PROXY_H_
     18 #define SHILL_DBUS_CHROMEOS_MODEM_PROXY_H_
     19 
     20 #include <string>
     21 #include <tuple>
     22 
     23 #include <base/macros.h>
     24 
     25 #include "cellular/dbus-proxies.h"
     26 #include "shill/cellular/modem_proxy_interface.h"
     27 
     28 namespace shill {
     29 
     30 // A proxy to (old) ModemManager.Modem.
     31 class ChromeosModemProxy : public ModemProxyInterface {
     32  public:
     33   // Constructs a ModemManager.Modem DBus object proxy at |path| owned by
     34   // |service|.
     35   ChromeosModemProxy(const scoped_refptr<dbus::Bus>& bus,
     36                      const std::string& path,
     37                      const std::string& service);
     38   ~ChromeosModemProxy() override;
     39 
     40   // Inherited from ModemProxyInterface.
     41   void Enable(bool enable,
     42               Error* error,
     43               const ResultCallback& callback,
     44               int timeout) override;
     45   void Disconnect(Error* error,
     46                   const ResultCallback& callback,
     47                   int timeout) override;
     48   void GetModemInfo(Error* error,
     49                     const ModemInfoCallback& callback,
     50                     int timeout) override;
     51 
     52   void set_state_changed_callback(
     53       const ModemStateChangedSignalCallback& callback) override {
     54     state_changed_callback_ = callback;
     55   }
     56 
     57  private:
     58   typedef std::tuple<std::string, std::string, std::string> ModemHardwareInfo;
     59 
     60   // Signal handler.
     61   void StateChanged(uint32_t old, uint32_t _new, uint32_t reason);
     62 
     63   // Callbacks for Enable async call.
     64   void OnEnableSuccess(const ResultCallback& callback);
     65   void OnEnableFailure(const ResultCallback& callback,
     66                        brillo::Error* dbus_error);
     67 
     68   // Callback for GetInfo async call.
     69   void OnGetInfoSuccess(const ModemInfoCallback& callback,
     70                         const ModemHardwareInfo& info);
     71   void OnGetInfoFailure(const ModemInfoCallback& callback,
     72                         brillo::Error* dbus_error);
     73 
     74   // Callback for Disconnect async call.
     75   void OnDisconnectSuccess(const ResultCallback& callback);
     76   void OnDisconnectFailure(const ResultCallback& callback,
     77                            brillo::Error* dbus_error);
     78 
     79   // Called when signal is connected to the ObjectProxy.
     80   void OnSignalConnected(const std::string& interface_name,
     81                          const std::string& signal_name,
     82                          bool success);
     83 
     84   ModemStateChangedSignalCallback state_changed_callback_;
     85 
     86   std::unique_ptr<org::freedesktop::ModemManager::ModemProxy> proxy_;
     87 
     88   base::WeakPtrFactory<ChromeosModemProxy> weak_factory_{this};
     89   DISALLOW_COPY_AND_ASSIGN(ChromeosModemProxy);
     90 };
     91 
     92 }  // namespace shill
     93 
     94 #endif  // SHILL_DBUS_CHROMEOS_MODEM_PROXY_H_
     95