src/frontends/android/app/src/main/java/org/strongswan/android/ui/ImcStateFragment.java

   1 /*
   2  * Copyright (C) 2013 Tobias Brunner
   3  *
   4  * Copyright (C) secunet Security Networks AG
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the
   8  * Free Software Foundation; either version 2 of the License, or (at your
   9  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * for more details.
  15  */
  16
  17 package org.strongswan.android.ui;
  18
  19 import android.app.Service;
  20 import android.content.ComponentName;
  21 import android.content.Context;
  22 import android.content.Intent;
  23 import android.content.ServiceConnection;
  24 import android.os.Bundle;
  25 import android.os.IBinder;
  26 import android.view.GestureDetector;
  27 import android.view.LayoutInflater;
  28 import android.view.MotionEvent;
  29 import android.view.View;
  30 import android.view.View.OnClickListener;
  31 import android.view.View.OnTouchListener;
  32 import android.view.ViewConfiguration;
  33 import android.view.ViewGroup;
  34 import android.widget.LinearLayout;
  35 import android.widget.TextView;
  36
  37 import org.strongswan.android.R;
  38 import org.strongswan.android.logic.VpnStateService;
  39 import org.strongswan.android.logic.VpnStateService.VpnStateListener;
  40 import org.strongswan.android.logic.imc.ImcState;
  41 import org.strongswan.android.logic.imc.RemediationInstruction;
  42
  43 import java.util.ArrayList;
  44
  45 import androidx.core.content.ContextCompat;
  46 import androidx.fragment.app.Fragment;
  47 import androidx.fragment.app.FragmentManager;
  48 import androidx.fragment.app.FragmentTransaction;
  49
  50 public class ImcStateFragment extends Fragment implements VpnStateListener
  51 {
  52         private int mColorIsolate;
  53         private int mColorBlock;
  54         private boolean mVisible;
  55         private TextView mStateView;
  56         private TextView mAction;
  57         private LinearLayout mButton;
  58         private VpnStateService mService;
  59         private final ServiceConnection mServiceConnection = new ServiceConnection()
  60         {
  61                 @Override
  62                 public void onServiceDisconnected(ComponentName name)
  63                 {
  64                         mService = null;
  65                 }
  66
  67                 @Override
  68                 public void onServiceConnected(ComponentName name, IBinder service)
  69                 {
  70                         mService = ((VpnStateService.LocalBinder)service).getService();
  71                         if (mVisible)
  72                         {
  73                                 mService.registerListener(ImcStateFragment.this);
  74                                 updateView();
  75                         }
  76                 }
  77         };
  78
  79         @Override
  80         public void onCreate(Bundle savedInstanceState)
  81         {
  82                 super.onCreate(savedInstanceState);
  83
  84                 mColorIsolate = ContextCompat.getColor(getActivity(), R.color.warning_text);
  85                 mColorBlock = ContextCompat.getColor(getActivity(), R.color.error_text);
  86
  87                 /* bind to the service only seems to work from the ApplicationContext */
  88                 Context context = getActivity().getApplicationContext();
  89                 context.bindService(new Intent(context, VpnStateService.class),
  90                                                         mServiceConnection, Service.BIND_AUTO_CREATE);
  91                 /* hide it initially */
  92                 getParentFragmentManager().beginTransaction().hide(this).commit();
  93         }
  94
  95         @Override
  96         public View onCreateView(LayoutInflater inflater, ViewGroup container,
  97                                                          Bundle savedInstanceState)
  98         {
  99                 View view = inflater.inflate(R.layout.imc_state_fragment, container, false);
 100
 101                 mButton = (LinearLayout)view.findViewById(R.id.imc_state_button);
 102                 mButton.setOnClickListener(new OnClickListener()
 103                 {
 104                         @Override
 105                         public void onClick(View v)
 106                         {
 107                                 Intent intent;
 108                                 if (mService != null && !mService.getRemediationInstructions().isEmpty())
 109                                 {
 110                                         intent = new Intent(getActivity(), RemediationInstructionsActivity.class);
 111                                         intent.putParcelableArrayListExtra(RemediationInstructionsFragment.EXTRA_REMEDIATION_INSTRUCTIONS,
 112                                                                                                            new ArrayList<RemediationInstruction>(mService.getRemediationInstructions()));
 113                                 }
 114                                 else
 115                                 {
 116                                         intent = new Intent(getActivity(), LogActivity.class);
 117                                 }
 118                                 startActivity(intent);
 119                         }
 120                 });
 121                 final GestureDetector gestures = new GestureDetector(getActivity(), new GestureDetector.SimpleOnGestureListener()
 122                 {
 123                         /* a better value would be getScaledTouchExplorationTapSlop() but that is hidden */
 124                         private final int mMinDistance = ViewConfiguration.get(getActivity()).getScaledTouchSlop() * 4;
 125
 126                         @Override
 127                         public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)
 128                         {
 129                                 if (Math.abs(e1.getX() - e2.getX()) >= mMinDistance)
 130                                 {       /* only if the user swiped a minimum horizontal distance */
 131                                         if (mService != null)
 132                                         {
 133                                                 mService.setImcState(ImcState.UNKNOWN);
 134                                         }
 135                                         return true;
 136                                 }
 137                                 return false;
 138                         }
 139                 });
 140                 mButton.setOnTouchListener(new OnTouchListener()
 141                 {
 142                         @Override
 143                         public boolean onTouch(View v, MotionEvent event)
 144                         {
 145                                 return gestures.onTouchEvent(event);
 146                         }
 147                 });
 148
 149                 mStateView = (TextView)view.findViewById(R.id.imc_state);
 150                 mAction = (TextView)view.findViewById(R.id.action);
 151
 152                 return view;
 153         }
 154
 155         @Override
 156         public void onResume()
 157         {
 158                 super.onResume();
 159                 mVisible = true;
 160                 if (mService != null)
 161                 {
 162                         mService.registerListener(this);
 163                         updateView();
 164                 }
 165         }
 166
 167         @Override
 168         public void onPause()
 169         {
 170                 super.onPause();
 171                 mVisible = false;
 172                 if (mService != null)
 173                 {
 174                         mService.unregisterListener(this);
 175                 }
 176         }
 177
 178         @Override
 179         public void onDestroy()
 180         {
 181                 super.onDestroy();
 182                 if (mService != null)
 183                 {
 184                         getActivity().getApplicationContext().unbindService(mServiceConnection);
 185                 }
 186         }
 187
 188         @Override
 189         public void stateChanged()
 190         {
 191                 updateView();
 192         }
 193
 194         public void updateView()
 195         {
 196                 FragmentManager fm = getParentFragmentManager();
 197                 if (fm == null)
 198                 {
 199                         return;
 200                 }
 201                 FragmentTransaction ft = fm.beginTransaction();
 202
 203                 switch (mService.getImcState())
 204                 {
 205                         case UNKNOWN:
 206                         case ALLOW:
 207                                 ft.hide(this);
 208                                 break;
 209                         case ISOLATE:
 210                                 mStateView.setText(R.string.imc_state_isolate);
 211                                 mStateView.setTextColor(mColorIsolate);
 212                                 ft.show(this);
 213                                 break;
 214                         case BLOCK:
 215                                 mStateView.setText(R.string.imc_state_block);
 216                                 mStateView.setTextColor(mColorBlock);
 217                                 ft.show(this);
 218                                 break;
 219                 }
 220                 ft.commit();
 221
 222                 mAction.setText(mService.getRemediationInstructions().isEmpty() ? R.string.show_log
 223                                                                                                                                                 : R.string.show_remediation_instructions);
 224         }
 225 }