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

   1 /*
   2  * Copyright (C) 2012-2018 Tobias Brunner
   3  * Copyright (C) 2012 Giuliano Grassi
   4  * Copyright (C) 2012 Ralf Sager
   5  *
   6  * Copyright (C) secunet Security Networks AG
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  15  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16  * for more details.
  17  */
  18
  19 package org.strongswan.android.ui;
  20
  21 import android.app.Dialog;
  22 import android.content.DialogInterface;
  23 import android.content.Intent;
  24 import android.os.Build;
  25 import android.os.Bundle;
  26 import android.text.format.Formatter;
  27 import android.view.Menu;
  28 import android.view.MenuItem;
  29 import android.widget.Toast;
  30
  31 import org.strongswan.android.R;
  32 import org.strongswan.android.data.VpnProfile;
  33 import org.strongswan.android.logic.StrongSwanApplication;
  34 import org.strongswan.android.logic.TrustedCertificateManager;
  35 import org.strongswan.android.ui.VpnProfileListFragment.OnVpnProfileSelectedListener;
  36
  37 import java.io.File;
  38 import java.util.ArrayList;
  39 import java.util.List;
  40
  41 import androidx.appcompat.app.ActionBar;
  42 import androidx.appcompat.app.AlertDialog;
  43 import androidx.appcompat.app.AppCompatActivity;
  44 import androidx.appcompat.app.AppCompatDialogFragment;
  45 import androidx.fragment.app.Fragment;
  46 import androidx.fragment.app.FragmentManager;
  47 import androidx.fragment.app.FragmentTransaction;
  48
  49 public class MainActivity extends AppCompatActivity implements OnVpnProfileSelectedListener
  50 {
  51         public static final String CONTACT_EMAIL = "android@strongswan.org";
  52         public static final String EXTRA_CRL_LIST = "org.strongswan.android.CRL_LIST";
  53
  54         /**
  55          * Use "bring your own device" (BYOD) features
  56          */
  57         public static final boolean USE_BYOD = true;
  58
  59         private static final String DIALOG_TAG = "Dialog";
  60
  61         @Override
  62         public void onCreate(Bundle savedInstanceState)
  63         {
  64                 super.onCreate(savedInstanceState);
  65                 setContentView(R.layout.main);
  66
  67                 ActionBar bar = getSupportActionBar();
  68                 bar.setDisplayShowHomeEnabled(true);
  69                 bar.setDisplayShowTitleEnabled(false);
  70                 bar.setIcon(R.mipmap.ic_app);
  71
  72                 /* load CA certificates in a background thread */
  73                 ((StrongSwanApplication)getApplication()).getExecutor().execute(() -> {
  74                         TrustedCertificateManager.getInstance().load();
  75                 });
  76         }
  77
  78         @Override
  79         public boolean onCreateOptionsMenu(Menu menu)
  80         {
  81                 getMenuInflater().inflate(R.menu.main, menu);
  82                 return true;
  83         }
  84
  85         @Override
  86         public boolean onPrepareOptionsMenu(Menu menu)
  87         {
  88                 if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
  89                 {
  90                         menu.removeItem(R.id.menu_import_profile);
  91                 }
  92                 return true;
  93         }
  94
  95         @Override
  96         public boolean onOptionsItemSelected(MenuItem item)
  97         {
  98                 switch (item.getItemId())
  99                 {
 100                         case R.id.menu_import_profile:
 101                                 Intent intent = new Intent(this, VpnProfileImportActivity.class);
 102                                 startActivity(intent);
 103                                 return true;
 104                         case R.id.menu_manage_certs:
 105                                 Intent certIntent = new Intent(this, TrustedCertificatesActivity.class);
 106                                 startActivity(certIntent);
 107                                 return true;
 108                         case R.id.menu_crl_cache:
 109                                 clearCRLs();
 110                                 return true;
 111                         case R.id.menu_show_log:
 112                                 Intent logIntent = new Intent(this, LogActivity.class);
 113                                 startActivity(logIntent);
 114                                 return true;
 115                         case R.id.menu_settings:
 116                                 Intent settingsIntent = new Intent(this, SettingsActivity.class);
 117                                 startActivity(settingsIntent);
 118                                 return true;
 119                         default:
 120                                 return super.onOptionsItemSelected(item);
 121                 }
 122         }
 123
 124         @Override
 125         public void onVpnProfileSelected(VpnProfile profile)
 126         {
 127                 Intent intent = new Intent(this, VpnProfileControlActivity.class);
 128                 intent.setAction(VpnProfileControlActivity.START_PROFILE);
 129                 intent.putExtra(VpnProfileControlActivity.EXTRA_VPN_PROFILE_ID, profile.getUUID().toString());
 130                 startActivity(intent);
 131         }
 132
 133         /**
 134          * Ask the user whether to clear the CRL cache.
 135          */
 136         private void clearCRLs()
 137         {
 138                 final String FILE_PREFIX = "crl-";
 139                 ArrayList<String> list = new ArrayList<>();
 140
 141                 for (String file : fileList())
 142                 {
 143                         if (file.startsWith(FILE_PREFIX))
 144                         {
 145                                 list.add(file);
 146                         }
 147                 }
 148                 if (list.size() == 0)
 149                 {
 150                         Toast.makeText(this, R.string.clear_crl_cache_msg_none, Toast.LENGTH_SHORT).show();
 151                         return;
 152                 }
 153                 removeFragmentByTag(DIALOG_TAG);
 154
 155                 Bundle args = new Bundle();
 156                 args.putStringArrayList(EXTRA_CRL_LIST, list);
 157
 158                 CRLCacheDialog dialog = new CRLCacheDialog();
 159                 dialog.setArguments(args);
 160                 dialog.show(this.getSupportFragmentManager(), DIALOG_TAG);
 161         }
 162
 163         /**
 164          * Dismiss dialog if shown
 165          */
 166         public void removeFragmentByTag(String tag)
 167         {
 168                 FragmentManager fm = getSupportFragmentManager();
 169                 Fragment login = fm.findFragmentByTag(tag);
 170                 if (login != null)
 171                 {
 172                         FragmentTransaction ft = fm.beginTransaction();
 173                         ft.remove(login);
 174                         ft.commit();
 175                 }
 176         }
 177
 178         /**
 179          * Confirmation dialog to clear CRL cache
 180          */
 181         public static class CRLCacheDialog extends AppCompatDialogFragment
 182         {
 183                 @Override
 184                 public Dialog onCreateDialog(Bundle savedInstanceState)
 185                 {
 186                         final List<String> list = getArguments().getStringArrayList(EXTRA_CRL_LIST);
 187                         String size;
 188                         long s = 0;
 189
 190                         for (String file : list)
 191                         {
 192                                 File crl = getActivity().getFileStreamPath(file);
 193                                 s += crl.length();
 194                         }
 195                         size = Formatter.formatFileSize(getActivity(), s);
 196
 197                         AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
 198                                         .setTitle(R.string.clear_crl_cache_title)
 199                                         .setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener()
 200                                         {
 201                                                 @Override
 202                                                 public void onClick(DialogInterface dialog, int which)
 203                                                 {
 204                                                         dismiss();
 205                                                 }
 206                                         })
 207                                         .setPositiveButton(R.string.clear, new DialogInterface.OnClickListener()
 208                                         {
 209                                                 @Override
 210                                                 public void onClick(DialogInterface dialog, int whichButton)
 211                                                 {
 212                                                         for (String file : list)
 213                                                         {
 214                                                                 getActivity().deleteFile(file);
 215                                                         }
 216                                                 }
 217                                         });
 218                         builder.setMessage(getActivity().getResources().getQuantityString(R.plurals.clear_crl_cache_msg, list.size(), list.size(), size));
 219                         return builder.create();
 220                 }
 221         }
 222 }