1 /* 2 * wpadebug - wpa_supplicant and Wi-Fi debugging app for Android 3 * Copyright (c) 2013, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 package w1.fi.wpadebug; 10 11 import java.io.BufferedReader; 12 import java.io.InputStreamReader; 13 import java.io.IOException; 14 15 import android.app.Activity; 16 import android.app.AlertDialog; 17 import android.os.Bundle; 18 import android.os.Parcelable; 19 import android.view.MenuItem; 20 import android.content.Intent; 21 import android.content.DialogInterface; 22 import android.widget.TextView; 23 import android.widget.Toast; 24 import android.text.method.ScrollingMovementMethod; 25 import android.util.Log; 26 import android.nfc.NdefMessage; 27 import android.nfc.NdefRecord; 28 import android.nfc.NfcAdapter; 29 30 public class WpaNfcActivity extends Activity 31 { 32 private static final String TAG = "wpadebug"; 33 byteArrayHex(byte[] a)34 String byteArrayHex(byte[] a) { 35 StringBuilder sb = new StringBuilder(); 36 for (byte b: a) 37 sb.append(String.format("%02x", b)); 38 return sb.toString(); 39 } 40 show_alert(String title, String message)41 private void show_alert(String title, String message) 42 { 43 AlertDialog.Builder alert = new AlertDialog.Builder(this); 44 alert.setTitle(title); 45 alert.setMessage(message); 46 alert.setPositiveButton("OK", new DialogInterface.OnClickListener() { 47 public void onClick(DialogInterface dialog, int id) 48 { 49 finish(); 50 } 51 }); 52 alert.create().show(); 53 } 54 wpaCmd(String cmd)55 private String wpaCmd(String cmd) 56 { 57 try { 58 Log.d(TAG, "Executing wpaCmd: " + cmd); 59 Process proc = Runtime.getRuntime().exec(new String[]{"/system/bin/mksh-su", "-c", "wpa_cli " + cmd}); 60 BufferedReader reader = new BufferedReader(new InputStreamReader(proc.getInputStream())); 61 StringBuffer output = new StringBuffer(); 62 int read; 63 char[] buffer = new char[1024]; 64 while ((read = reader.read(buffer)) > 0) 65 output.append(buffer, 0, read); 66 reader.close(); 67 proc.waitFor(); 68 Log.d(TAG, "External process completed - exitValue " + 69 proc.exitValue()); 70 return output.toString(); 71 } catch (IOException e) { 72 show_alert("Could not run external program", 73 "Execution of an external program failed. " + 74 "Maybe mksh-su was not installed."); 75 return null; 76 } catch (InterruptedException e) { 77 throw new RuntimeException(e); 78 } 79 } 80 report_tag_read(byte[] payload)81 public boolean report_tag_read(byte[] payload) 82 { 83 String res = wpaCmd("WPS_NFC_TAG_READ " + byteArrayHex(payload)); 84 if (res == null) 85 return false; 86 if (!res.contains("OK")) { 87 Toast.makeText(this, "Failed to report WSC tag read to " + 88 "wpa_supplicant", Toast.LENGTH_LONG).show(); 89 } else { 90 Toast.makeText(this, "Reported WSC tag read to wpa_supplicant", 91 Toast.LENGTH_LONG).show(); 92 } 93 finish(); 94 return true; 95 } 96 97 @Override onCreate(Bundle savedInstanceState)98 public void onCreate(Bundle savedInstanceState) 99 { 100 super.onCreate(savedInstanceState); 101 102 Intent intent = getIntent(); 103 String action = intent.getAction(); 104 Log.d(TAG, "onCreate: action=" + action); 105 106 if (NfcAdapter.ACTION_NDEF_DISCOVERED.equals(action)) { 107 Log.d(TAG, "NDEF discovered"); 108 Parcelable[] raw = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES); 109 if (raw != null) { 110 Log.d(TAG, "NDEF message count: " + raw.length); 111 NdefMessage[] msgs = new NdefMessage[raw.length]; 112 for (int i = 0; i < raw.length; i++) { 113 msgs[i] = (NdefMessage) raw[i]; 114 NdefRecord rec = msgs[i].getRecords()[0]; 115 Log.d(TAG, "MIME type: " + rec.toMimeType()); 116 byte[] a = rec.getPayload(); 117 Log.d(TAG, "NDEF record: " + byteArrayHex(a)); 118 if (rec.getTnf() == NdefRecord.TNF_MIME_MEDIA && 119 rec.toMimeType().equals("application/vnd/wfa.wsc")) { 120 Log.d(TAG, "WSC tag read"); 121 } 122 123 if (!report_tag_read(a)) 124 return; 125 } 126 } 127 } 128 129 finish(); 130 } 131 } 132
