src/org/average/nfcauthcr/NfcCRdispatch.java

   1 package org.average.ykneocr;
   2
   3 import java.io.IOException;
   4 import java.util.ArrayList;
   5
   6 import android.app.Activity;
   7 import android.app.PendingIntent;
   8 import android.content.Intent;
   9 import android.content.IntentFilter;
  10 import android.nfc.NfcAdapter;
  11 import android.nfc.Tag;
  12 import android.nfc.TagLostException;
  13 import android.nfc.tech.IsoDep;
  14 import android.util.Log;
  15 import android.widget.Toast;
  16
  17 import org.average.ykneocr.YkNeo;
  18 import org.average.ykneocr.CRException;
  19
  20 public class NfcCRdispatch {
  21
  22         private final String TAG = getClass().getName();
  23
  24         private Activity activity = null;
  25         private PendingIntent tagIntent = null;
  26         private ArrayList<String> challenge;
  27
  28         NfcCRdispatch(Activity activity) {
  29                 Log.v(TAG, "new NfcCRdispatch, activity=" + activity);
  30                 this.activity = activity;
  31         }
  32
  33         public ArrayList<String> onNewIntent(Intent intent) {
  34                 Log.v(TAG, "NFC Intent arrived");
  35                 Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
  36                 if (tag == null) return null;
  37                 IsoDep isoTag = IsoDep.get(tag);
  38                 try {
  39                         int slot = intent.getIntExtra("yubikey_neo_slot", -1);
  40                         isoTag.connect();
  41                         return YkNeo.doChalResp(isoTag, slot, challenge);
  42                 } catch (TagLostException e) {
  43                         Log.v(TAG, e.getMessage());
  44                         Toast.makeText(activity, e.getMessage(),
  45                                         Toast.LENGTH_LONG).show();
  46                 } catch (IOException e) {
  47                         Log.v(TAG, e.getMessage());
  48                         Toast.makeText(activity, e.getMessage(),
  49                                         Toast.LENGTH_LONG).show();
  50                 } catch (CRException e) {
  51                         Log.v(TAG, e.getMessage());
  52                         Toast.makeText(activity, e.getMessage(),
  53                                         Toast.LENGTH_LONG).show();
  54                 }
  55                 return null;
  56         }
  57
  58         public void onResume(ArrayList<String> challenge) {
  59                 this.challenge = challenge;
  60                 Intent intent = activity.getIntent();
  61                 intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
  62                 tagIntent = PendingIntent.getActivity(activity, 0, intent, 0);
  63                 IntentFilter iso =
  64                         new IntentFilter(NfcAdapter.ACTION_TECH_DISCOVERED);
  65                 String[] techs =
  66                         new String[] {IsoDep.class.getName()};
  67                 NfcAdapter adapter = NfcAdapter.getDefaultAdapter(activity);
  68                 if (adapter == null) {
  69                         Toast.makeText(activity, R.string.no_nfc,
  70                                                 Toast.LENGTH_LONG).show();
  71                         return;
  72                 }
  73                 if (!adapter.isEnabled()) {
  74                         Toast.makeText(activity, R.string.nfc_disabled,
  75                                                 Toast.LENGTH_LONG).show();
  76                         return;
  77                 }
  78                 adapter.enableForegroundDispatch(activity, tagIntent,
  79                                         new IntentFilter[] {iso},
  80                                         new String[][] {techs});
  81         }
  82
  83         public void onPause() {
  84                 if (tagIntent != null) {
  85                         tagIntent.cancel();
  86                         tagIntent = null;
  87                 }
  88                 NfcAdapter adapter = NfcAdapter.getDefaultAdapter(activity);
  89                 if (adapter != null) {
  90                         adapter.disableForegroundDispatch(activity);
  91                 }
  92         }
  93 }