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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 _VPN_CONTROLLER_H
     18 #define _VPN_CONTROLLER_H
     19 
     20 #include <netinet/in.h>
     21 
     22 #include "Controller.h"
     23 
     24 class IControllerHandler;
     25 
     26 class VpnController : public Controller {
     27     class VpnIntegerProperty : public IntegerProperty {
     28     protected:
     29         VpnController *mVc;
     30     public:
     31         VpnIntegerProperty(VpnController *c, const char *name, bool ro,
     32                             int elements);
     33         virtual ~VpnIntegerProperty() {}
     34         virtual int set(int idx, int value) = 0;
     35         virtual int get(int idx, int *buffer) = 0;
     36     };
     37     friend class VpnController::VpnIntegerProperty;
     38 
     39     class VpnStringProperty : public StringProperty {
     40     protected:
     41         VpnController *mVc;
     42     public:
     43         VpnStringProperty(VpnController *c, const char *name, bool ro,
     44                             int elements);
     45         virtual ~VpnStringProperty() {}
     46         virtual int set(int idx, const char *value) = 0;
     47         virtual int get(int idx, char *buffer, size_t max) = 0;
     48     };
     49     friend class VpnController::VpnStringProperty;
     50 
     51     class VpnIPV4AddressProperty : public IPV4AddressProperty {
     52     protected:
     53         VpnController *mVc;
     54     public:
     55         VpnIPV4AddressProperty(VpnController *c, const char *name, bool ro,
     56                           int elements);
     57         virtual ~VpnIPV4AddressProperty() {}
     58         virtual int set(int idx, struct in_addr *value) = 0;
     59         virtual int get(int idx, struct in_addr *buffer) = 0;
     60     };
     61     friend class VpnController::VpnIPV4AddressProperty;
     62 
     63     class VpnEnabledProperty : public VpnIntegerProperty {
     64     public:
     65         VpnEnabledProperty(VpnController *c);
     66         virtual ~VpnEnabledProperty() {};
     67         int set(int idx, int value);
     68         int get(int idx, int *buffer);
     69     };
     70 
     71     bool           mEnabled;
     72     /*
     73      * Gateway of the VPN server to connect to
     74      */
     75     struct in_addr mGateway;
     76 
     77     struct {
     78         VpnEnabledProperty *propEnabled;
     79     } mStaticProperties;
     80 
     81     struct {
     82         IPV4AddressPropertyHelper *propGateway;
     83     } mDynamicProperties;
     84 
     85 public:
     86     VpnController(PropertyManager *propmngr, IControllerHandler *handlers);
     87     virtual ~VpnController() {}
     88 
     89     virtual int start();
     90     virtual int stop();
     91 
     92 protected:
     93     virtual int enable() = 0;
     94     virtual int disable() = 0;
     95 };
     96 
     97 #endif
     98