src/com/joshuawise/dumload/Preferences.java

   1 package com.joshuawise.dumload;
   2
   3 import java.io.File;
   4
   5 import android.content.SharedPreferences;
   6 import android.os.AsyncTask;
   7 import android.os.Bundle;
   8 import android.preference.PreferenceActivity;
   9 import android.preference.PreferenceManager;
  10 import android.view.Menu;
  11 import android.view.MenuItem;
  12 import android.view.Window;
  13 import android.widget.Toast;
  14
  15 import com.jcraft.jsch.JSch;
  16 import com.jcraft.jsch.KeyPair;
  17
  18 public class Preferences extends PreferenceActivity {
  19
  20         private class KeygenTask extends AsyncTask<Void, Void, String> {
  21
  22                 @Override
  23                 protected String doInBackground(Void... params) {
  24                         String ret = null;
  25                         String homedir = getFilesDir().getAbsolutePath();
  26                         String filename = homedir + "/id_dsa_generated";
  27                         File file = new File(filename);
  28                         if (file.exists()) {
  29                                 return getString(R.string.msgKeyExists);
  30                         } else {
  31                                 JSch jsch = new JSch();
  32                                 int type = KeyPair.DSA;
  33                                 try {
  34                                         KeyPair kpair = KeyPair.genKeyPair(jsch, type);
  35                                         // TODO: query for a passphrase
  36                                         kpair.setPassphrase("");
  37                                         kpair.writePrivateKey(filename);
  38                                         kpair.writePublicKey(filename + ".pub", "generated by dumload");
  39                                         ret = "Fingerprint: " + kpair.getFingerPrint();
  40                                         kpair.dispose();
  41                                 } catch (Exception e) {
  42                                         System.out.println(e);
  43                                 }
  44                         }
  45                         return ret;
  46                 }
  47
  48                 @Override
  49                 protected void onPostExecute(String result) {
  50                         setProgressBarIndeterminateVisibility(false);
  51                         Toast.makeText(getApplicationContext(), result, Toast.LENGTH_LONG).show();
  52                         super.onPostExecute(result);
  53                 }
  54
  55         }
  56
  57         @Override
  58         public void onCreate(Bundle savedInstanceState) {
  59                 requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
  60                 super.onCreate(savedInstanceState);
  61                 // Load the preferences from an XML resource
  62                 addPreferencesFromResource(R.xml.preferences);
  63         }
  64
  65         @Override
  66         public boolean onCreateOptionsMenu(Menu menu) {
  67                 super.onCreateOptionsMenu(menu);
  68
  69                 menu.add(Menu.NONE, R.id.actionCreateSshKey, Menu.NONE,
  70                                 getString(R.string.menuGenSshKey));
  71                 menu.add(Menu.NONE, R.id.actionRemoveSshKey, Menu.NONE,
  72                                 getString(R.string.menuDelSshKey));
  73                 return true;
  74         }
  75
  76         public boolean onOptionsItemSelected(MenuItem item) {
  77                 switch (item.getItemId()) {
  78                 case R.id.actionCreateSshKey:
  79                         generateDSAKeyPair();
  80                         break;
  81                 case R.id.actionRemoveSshKey:
  82                         String homedir = getFilesDir().getAbsolutePath();
  83                         String filename = homedir + "/id_dsa_generated";
  84                         File file = new File(filename);
  85                         if (file.exists()) {
  86                                 file.delete();
  87                                 Toast.makeText(this,
  88                                                 "Deleted",
  89                                                 Toast.LENGTH_LONG).show();
  90                         } else {
  91                                 Toast.makeText(this, getString(R.string.msgNoGenKeyFound), Toast.LENGTH_SHORT).show();
  92                         }
  93                 }
  94                 return false;
  95         }
  96
  97         private void generateDSAKeyPair() {
  98                 setProgressBarIndeterminateVisibility(true);
  99                 KeygenTask t = new KeygenTask();
 100                 t.execute();
 101         }
 102 }