X-Git-Url: http://www.average.org/gitweb/?p=YkNeoCR.git;a=blobdiff_plain;f=src%2Forg%2Faverage%2Fnfcauthcr%2FEnroll.java;fp=src%2Forg%2Faverage%2Fnfcauthcr%2FEnroll.java;h=9f9d53593da811965c43d9c4ef4167826f35da07;hp=0000000000000000000000000000000000000000;hb=a0d60dab1717e69b6d853eb91d0065fe378e3c28;hpb=bdfe828f712fa2a187a424923c6594f12e965a5d

diff --git a/src/org/average/nfcauthcr/Enroll.java b/src/org/average/nfcauthcr/Enroll.java
new file mode 100644
index 0000000..9f9d535
--- /dev/null
+++ b/src/org/average/nfcauthcr/Enroll.java
@@ -0,0 +1,143 @@
+package org.average.nfcauthcr;
+
+import java.util.Random;
+
+import android.os.Bundle;
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.preference.PreferenceManager;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.content.DialogInterface;
+import android.util.Log;
+import android.view.View;
+import android.widget.TextView;
+import android.widget.RadioButton;
+
+import org.average.nfcauthcr.Check;
+
+public class Enroll extends Activity {
+
+	private final String TAG = getClass().getName();
+
+	private static boolean waitingForResult = false;
+	private static SharedPreferences prefs;
+	private static int slot;
+
+	@Override
+	protected void onCreate(Bundle savedInstanceState)
+	{
+		super.onCreate(savedInstanceState);
+		Log.v(TAG, "Starting");
+		prefs = PreferenceManager.getDefaultSharedPreferences(this);
+	}
+
+	@Override
+	protected void onResume() {
+		super.onResume();
+		setContentView(R.layout.main);
+		slot = prefs.getInt("slot_number", -1);
+		Log.v(TAG, "found saved slot value " + slot);
+		RadioButton btn = null;
+		switch (slot) {
+		case 1: btn = (RadioButton)findViewById(R.id.slot_1);
+			break;
+		case 2: btn = (RadioButton)findViewById(R.id.slot_2);
+			break;
+		}
+		if (btn != null) btn.setChecked(true);
+	}
+
+	@Override
+	protected void onPause() {
+		super.onPause();
+		Log.v(TAG, "Going inactive, try to stop");
+		if (!waitingForResult) { finish(); }
+	}
+
+	@Override
+	protected void onStop() {
+		super.onStop();
+		Log.v(TAG, "Stop requested");
+	}
+
+	public void onSlotSelectionClicked(View view) {
+		Log.v(TAG, "Radio Button selected");
+		if (! ((RadioButton) view).isChecked()) return;
+		switch(view.getId()) {
+		case R.id.slot_1: slot=1; break;
+		case R.id.slot_2: slot=2; break;
+		}
+		Editor editor = prefs.edit();
+		editor.putInt("slot_number", slot);
+		editor.commit();
+		Log.v(TAG, "stored slot number " + slot);
+	}
+
+	public void onEnrollClicked(View view) {
+		Log.v(TAG, "Enroll clicked");
+		if (slot > 0) {
+			runEnrollment(slot);
+		} else {
+			showEnrollResult("Must specify which slot to use");
+		}
+	}
+
+	public void onActivityResult(int requestCode, int resultCode,
+					Intent intent) {
+		Log.v(TAG, "Got activity result");
+		waitingForResult = false;
+
+		if (resultCode != RESULT_OK) {
+			Log.v(TAG, "Error result code " + resultCode);
+			return;
+		}
+		byte[] challenge = intent.getByteArrayExtra("challenge");
+		Log.v(TAG, "Challenge is \"" + hex(challenge) + "\"");
+		byte[] response = intent.getByteArrayExtra("response");
+		Log.v(TAG, "Response is  \"" + hex(response) + "\"");
+		Editor editor = prefs.edit();
+		editor.putString("challenge", hex(challenge));
+		editor.putString("response", hex(response));
+		editor.commit();
+		Log.v(TAG, "stored new challenge and response");
+	}
+
+	private void showEnrollResult(final String msg) {
+		Log.v(TAG, "Show result: \"" + msg + "\"");
+
+		AlertDialog.Builder builder = new AlertDialog.Builder(this);
+		builder.setTitle(R.string.enrollresult);
+		builder.setMessage(msg);
+		builder.setPositiveButton(android.R.string.ok,
+				new DialogInterface.OnClickListener() {
+			public void onClick(DialogInterface dialog, int which) {
+				dialog.dismiss();
+				if (!waitingForResult) { finish(); }
+			}
+		});
+		AlertDialog dialog = builder.create();
+		dialog.show();
+	}
+
+	private void runEnrollment(int slot) {
+		Random rng = new Random();
+		byte[] challenge = new byte[63];
+		rng.nextBytes(challenge);
+		Log.v(TAG, "Random challenge: " + hex(challenge));
+		Log.v(TAG, "Launching challenging activity");
+		Intent crIntent = new Intent(this, NFCAuthCRCheck.class);
+		crIntent.putExtra("slot", slot);
+		crIntent.putExtra("challenge", challenge);
+		this.startActivityForResult(crIntent, 0);
+		waitingForResult = true;
+	}
+
+	private String hex(byte[] a) {
+		StringBuilder sb = new StringBuilder();
+		if (a == null) return "<null>";
+		for (byte b: a) sb.append(String.format("%02x", b&0xff));
+		return sb.toString();
+	}
+}