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      1 /*
      2  * Copyright (C) 2008 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 _NETWORKMANAGER_H
     18 #define _NETWORKMANAGER_H
     19 
     20 #include <utils/List.h>
     21 #include <sysutils/SocketListener.h>
     22 
     23 #include "Controller.h"
     24 #include "PropertyManager.h"
     25 #include "IControllerHandler.h"
     26 #include "IDhcpEventHandlers.h"
     27 
     28 class InterfaceConfig;
     29 class DhcpClient;
     30 
     31 class NetworkManager : public IControllerHandler, public IDhcpEventHandlers {
     32     static NetworkManager *sInstance;
     33 
     34     class ControllerBinding {
     35         Controller      *mController;
     36         InterfaceConfig *mCurrentCfg;
     37         InterfaceConfig *mBoundCfg;
     38 
     39     public:
     40         ControllerBinding(Controller *c);
     41         virtual ~ControllerBinding() {}
     42 
     43         InterfaceConfig *getCurrentCfg() { return mCurrentCfg; }
     44         InterfaceConfig *getBoundCfg() { return mCurrentCfg; }
     45         Controller *getController() { return mController; }
     46 
     47         void setCurrentCfg(InterfaceConfig *cfg);
     48         void setBoundCfg(InterfaceConfig *cfg);
     49     };
     50 
     51     typedef android::List<ControllerBinding *> ControllerBindingCollection;
     52 
     53 private:
     54     ControllerBindingCollection *mControllerBindings;
     55     SocketListener              *mBroadcaster;
     56     PropertyManager             *mPropMngr;
     57     DhcpClient                  *mDhcp;
     58     int                         mLastDhcpState;
     59 
     60 public:
     61     virtual ~NetworkManager();
     62 
     63     int run();
     64 
     65     int attachController(Controller *controller);
     66 
     67     Controller *findController(const char *name);
     68 
     69     void setBroadcaster(SocketListener *sl) { mBroadcaster = sl; }
     70     SocketListener *getBroadcaster() { return mBroadcaster; }
     71     PropertyManager *getPropMngr() { return mPropMngr; }
     72 
     73     static NetworkManager *Instance();
     74 
     75 private:
     76     int startControllers();
     77     int stopControllers();
     78 
     79     NetworkManager(PropertyManager *propMngr);
     80     ControllerBinding *lookupBinding(Controller *c);
     81 
     82     void onInterfaceConnected(Controller *c);
     83     void onInterfaceDisconnected(Controller *c);
     84     void onControllerSuspending(Controller *c);
     85     void onControllerResumed(Controller *c);
     86 
     87     void onDhcpStateChanged(Controller *c, int state);
     88     void onDhcpEvent(Controller *c, int event);
     89     void onDhcpLeaseUpdated(Controller *c,
     90                             struct in_addr *addr, struct in_addr *net,
     91                             struct in_addr *brd,
     92                             struct in_addr *gw, struct in_addr *dns1,
     93                             struct in_addr *dns2);
     94 };
     95 #endif
     96