/**
* Copyright (C) 2016 Open Whisper Systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.thoughtcrime.securesms;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.PorterDuff;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.os.Build;
import android.os.Bundle;
import android.os.Vibrator;
import android.support.annotation.DrawableRes;
import android.support.annotation.NonNull;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
import android.text.Html;
import android.text.TextUtils;
import android.text.method.LinkMovementMethod;
import android.util.Log;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.Animation;
import android.view.animation.AnticipateInterpolator;
import android.view.animation.OvershootInterpolator;
import android.view.animation.ScaleAnimation;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import org.thoughtcrime.securesms.color.MaterialColor;
import org.thoughtcrime.securesms.components.camera.CameraView;
import org.thoughtcrime.securesms.crypto.IdentityKeyParcelable;
import org.thoughtcrime.securesms.crypto.IdentityKeyUtil;
import org.thoughtcrime.securesms.crypto.MasterSecret;
import org.thoughtcrime.securesms.qr.QrCode;
import org.thoughtcrime.securesms.qr.ScanListener;
import org.thoughtcrime.securesms.qr.ScanningThread;
import org.thoughtcrime.securesms.recipients.Recipient;
import org.thoughtcrime.securesms.recipients.RecipientFactory;
import org.thoughtcrime.securesms.recipients.Recipients;
import org.thoughtcrime.securesms.util.DynamicLanguage;
import org.thoughtcrime.securesms.util.DynamicTheme;
import org.thoughtcrime.securesms.util.TextSecurePreferences;
import org.thoughtcrime.securesms.util.Util;
import org.thoughtcrime.securesms.util.ViewUtil;
import org.whispersystems.libsignal.IdentityKey;
import org.whispersystems.libsignal.fingerprint.Fingerprint;
import org.whispersystems.libsignal.fingerprint.FingerprintParsingException;
import org.whispersystems.libsignal.fingerprint.FingerprintVersionMismatchException;
import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
import org.whispersystems.signalservice.api.util.InvalidNumberException;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
/**
* Activity for verifying identity keys.
*
* @author Moxie Marlinspike
*/
public class VerifyIdentityActivity extends PassphraseRequiredActionBarActivity implements Recipient.RecipientModifiedListener, ScanListener, View.OnClickListener {
private static final String TAG = VerifyIdentityActivity.class.getSimpleName();
public static final String RECIPIENT_ID = "recipient_id";
public static final String RECIPIENT_IDENTITY = "recipient_identity";
private final DynamicTheme dynamicTheme = new DynamicTheme();
private final DynamicLanguage dynamicLanguage = new DynamicLanguage();
private VerifyDisplayFragment displayFragment = new VerifyDisplayFragment();
private VerifyScanFragment scanFragment = new VerifyScanFragment();
@Override
public void onPreCreate() {
dynamicTheme.onCreate(this);
dynamicLanguage.onCreate(this);
}
@Override
protected void onCreate(Bundle state, @NonNull MasterSecret masterSecret) {
try {
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle(R.string.AndroidManifest__verify_safety_number);
Recipient recipient = RecipientFactory.getRecipientForId(this, getIntent().getLongExtra(RECIPIENT_ID, -1), true);
recipient.addListener(this);
setActionBarNotificationBarColor(recipient.getColor());
Bundle extras = new Bundle();
extras.putParcelable(VerifyDisplayFragment.REMOTE_IDENTITY, getIntent().getParcelableExtra(RECIPIENT_IDENTITY));
extras.putString(VerifyDisplayFragment.REMOTE_NUMBER, Util.canonicalizeNumber(this, recipient.getNumber()));
extras.putParcelable(VerifyDisplayFragment.LOCAL_IDENTITY, new IdentityKeyParcelable(IdentityKeyUtil.getIdentityKey(this)));
extras.putString(VerifyDisplayFragment.LOCAL_NUMBER, TextSecurePreferences.getLocalNumber(this));
scanFragment.setScanListener(this);
displayFragment.setClickListener(this);
initFragment(android.R.id.content, displayFragment, masterSecret, dynamicLanguage.getCurrentLocale(), extras);
} catch (InvalidNumberException e) {
Log.w(TAG, e);
finish();
}
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
menu.clear();
MenuInflater inflater = this.getMenuInflater();
inflater.inflate(R.menu.verify_identity, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.verify_identity__share: handleShare(); return true;
case android.R.id.home: finish(); return true;
}
return false;
}
@Override
public void onModified(final Recipient recipient) {
Util.runOnMain(new Runnable() {
@Override
public void run() {
setActionBarNotificationBarColor(recipient.getColor());
}
});
}
@Override
public void onQrDataFound(final String data) {
Util.runOnMain(new Runnable() {
@Override
public void run() {
((Vibrator)getSystemService(Context.VIBRATOR_SERVICE)).vibrate(50);
getSupportFragmentManager().popBackStack();
displayFragment.setScannedFingerprint(data);
}
});
}
@Override
public void onClick(View v) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.setCustomAnimations(R.anim.slide_from_top, R.anim.slide_to_bottom,
R.anim.slide_from_bottom, R.anim.slide_to_top);
transaction.replace(android.R.id.content, scanFragment)
.addToBackStack(null)
.commit();
}
private void setActionBarNotificationBarColor(MaterialColor color) {
getSupportActionBar().setBackgroundDrawable(new ColorDrawable(color.toActionBarColor(this)));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
getWindow().setStatusBarColor(color.toStatusBarColor(this));
}
}
private void handleShare() {
String shareString =
getString(R.string.VerifyIdentityActivity_our_signal_safety_number) + "\n" +
displayFragment.getFormattedSafetyNumbers() + "\n";
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_TEXT, shareString);
intent.setType("text/plain");
try {
startActivity(Intent.createChooser(intent, getString(R.string.VerifyIdentityActivity_share_safety_number_via)));
} catch (ActivityNotFoundException e) {
Toast.makeText(VerifyIdentityActivity.this, R.string.VerifyIdentityActivity_no_app_to_share_to, Toast.LENGTH_LONG).show();
}
}
public static class VerifyDisplayFragment extends Fragment implements Recipients.RecipientsModifiedListener {
public static final String REMOTE_NUMBER = "remote_number";
public static final String REMOTE_IDENTITY = "remote_identity";
public static final String LOCAL_IDENTITY = "local_identity";
public static final String LOCAL_NUMBER = "local_number";
private Recipients recipient;
private String localNumber;
private String remoteNumber;
private IdentityKey localIdentity;
private IdentityKey remoteIdentity;
private Fingerprint fingerprint;
private View container;
private View numbersContainer;
private ImageView qrCode;
private ImageView qrVerified;
private TextView description;
private View.OnClickListener clickListener;
private TextView[] codes = new TextView[12];
private boolean animateSuccessOnDraw = false;
private boolean animateFailureOnDraw = false;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
this.container = ViewUtil.inflate(inflater, viewGroup, R.layout.verify_display_fragment);
this.numbersContainer = ViewUtil.findById(container, R.id.number_table);
this.qrCode = ViewUtil.findById(container, R.id.qr_code);
this.qrVerified = ViewUtil.findById(container, R.id.qr_verified);
this.description = ViewUtil.findById(container, R.id.description);
this.codes[0] = ViewUtil.findById(container, R.id.code_first);
this.codes[1] = ViewUtil.findById(container, R.id.code_second);
this.codes[2] = ViewUtil.findById(container, R.id.code_third);
this.codes[3] = ViewUtil.findById(container, R.id.code_fourth);
this.codes[4] = ViewUtil.findById(container, R.id.code_fifth);
this.codes[5] = ViewUtil.findById(container, R.id.code_sixth);
this.codes[6] = ViewUtil.findById(container, R.id.code_seventh);
this.codes[7] = ViewUtil.findById(container, R.id.code_eighth);
this.codes[8] = ViewUtil.findById(container, R.id.code_ninth);
this.codes[9] = ViewUtil.findById(container, R.id.code_tenth);
this.codes[10] = ViewUtil.findById(container, R.id.code_eleventh);
this.codes[11] = ViewUtil.findById(container, R.id.code_twelth);
this.qrCode.setOnClickListener(clickListener);
this.registerForContextMenu(numbersContainer);
return container;
}
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
this.localNumber = getArguments().getString(LOCAL_NUMBER);
this.localIdentity = ((IdentityKeyParcelable)getArguments().getParcelable(LOCAL_IDENTITY)).get();
this.remoteNumber = getArguments().getString(REMOTE_NUMBER);
this.recipient = RecipientFactory.getRecipientsFromString(getActivity(), this.remoteNumber, true);
this.remoteIdentity = ((IdentityKeyParcelable)getArguments().getParcelable(REMOTE_IDENTITY)).get();
this.fingerprint = new NumericFingerprintGenerator(5200).createFor(localNumber, localIdentity,
remoteNumber, remoteIdentity);
this.recipient.addListener(this);
}
@Override
public void onModified(Recipients recipients) {
Util.runOnMain(new Runnable() {
@Override
public void run() {
setFingerprintViews(fingerprint);
}
});
}
@Override
public void onResume() {
super.onResume();
setFingerprintViews(fingerprint);
if (animateSuccessOnDraw) {
animateSuccessOnDraw = false;
animateVerifiedSuccess();
} else if (animateFailureOnDraw) {
animateFailureOnDraw = false;
animateVerifiedFailure();;
}
}
@Override
public void onDestroy() {
super.onDestroy();
recipient.removeListener(this);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View view,
ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, view, menuInfo);
MenuInflater inflater = getActivity().getMenuInflater();
inflater.inflate(R.menu.verify_display_fragment_context_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_copy: handleCopyToClipboard(); return true;
case R.id.menu_compare: handleCompareWithClipboard(); return true;
default: return super.onContextItemSelected(item);
}
}
public void setScannedFingerprint(String scanned) {
try {
if (fingerprint.getScannableFingerprint().compareTo(scanned.getBytes("ISO-8859-1"))) {
this.animateSuccessOnDraw = true;
} else {
this.animateFailureOnDraw = true;
}
} catch (FingerprintVersionMismatchException e) {
Log.w(TAG, e);
if (e.getOurVersion() < e.getTheirVersion()) {
Toast.makeText(getActivity(), R.string.VerifyIdentityActivity_your_contact_is_running_a_newer_version_of_Signal, Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getActivity(), R.string.VerifyIdentityActivity_your_contact_is_running_an_old_version_of_signal, Toast.LENGTH_LONG).show();
}
} catch (FingerprintParsingException e) {
Log.w(TAG, e);
Toast.makeText(getActivity(), R.string.VerifyIdentityActivity_the_scanned_qr_code_is_not_a_correctly_formatted_safety_number, Toast.LENGTH_LONG).show();
} catch (UnsupportedEncodingException e) {
throw new AssertionError(e);
}
}
public void setClickListener(View.OnClickListener listener) {
this.clickListener = listener;
}
public String getFormattedSafetyNumbers() {
StringBuilder result = new StringBuilder();
for (int i = 0; i < codes.length; i++) {
result.append(codes[i].getText());
if (i != codes.length - 1) {
if (((i+1) % 4) == 0) result.append('\n');
else result.append(' ');
}
}
return result.toString();
}
private void handleCopyToClipboard() {
Util.writeTextToClipboard(getActivity(), getFormattedSafetyNumbers());
}
private void handleCompareWithClipboard() {
String clipboardData = Util.readTextFromClipboard(getActivity());
if (clipboardData == null) {
Toast.makeText(getActivity(), R.string.VerifyIdentityActivity_no_safety_number_to_compare_was_found_in_the_clipboard, Toast.LENGTH_LONG).show();
return;
}
String numericClipboardData = clipboardData.replaceAll("\\D", "");
if (TextUtils.isEmpty(numericClipboardData) || numericClipboardData.length() != 60) {
Toast.makeText(getActivity(), R.string.VerifyIdentityActivity_no_safety_number_to_compare_was_found_in_the_clipboard, Toast.LENGTH_LONG).show();
return;
}
if (fingerprint.getDisplayableFingerprint().getDisplayText().equals(numericClipboardData)) {
animateVerifiedSuccess();
} else {
animateVerifiedFailure();
}
}
private void setFingerprintViews(Fingerprint fingerprint) {
String digits = fingerprint.getDisplayableFingerprint().getDisplayText();
int partSize = digits.length() / codes.length;
for (int i=0;i<codes.length;i++) {
codes[i].setText(digits.substring(i * partSize, (i * partSize) + partSize));
}
byte[] qrCodeData = fingerprint.getScannableFingerprint().getSerialized();
String qrCodeString = new String(qrCodeData, Charset.forName("ISO-8859-1"));
Bitmap qrCodeBitmap = QrCode.create(qrCodeString);
qrCode.setImageBitmap(qrCodeBitmap);
description.setText(Html.fromHtml(String.format(getActivity().getString(R.string.verify_display_fragment__if_you_wish_to_verify_the_security_of_your_end_to_end_encryption_with_s), recipient.toShortString())));
description.setMovementMethod(LinkMovementMethod.getInstance());
}
private Bitmap createVerifiedBitmap(int width, int height, @DrawableRes int id) {
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Bitmap check = BitmapFactory.decodeResource(getResources(), id);
float offset = (width - check.getWidth()) / 2;
canvas.drawBitmap(check, offset, offset, null);
return bitmap;
}
private void animateVerifiedSuccess() {
Bitmap qrBitmap = ((BitmapDrawable)qrCode.getDrawable()).getBitmap();
Bitmap qrSuccess = createVerifiedBitmap(qrBitmap.getWidth(), qrBitmap.getHeight(), R.drawable.ic_check_white_48dp);
qrVerified.setImageBitmap(qrSuccess);
qrVerified.getBackground().setColorFilter(getResources().getColor(R.color.green_500), PorterDuff.Mode.MULTIPLY);
animateVerified();
}
private void animateVerifiedFailure() {
Bitmap qrBitmap = ((BitmapDrawable)qrCode.getDrawable()).getBitmap();
Bitmap qrSuccess = createVerifiedBitmap(qrBitmap.getWidth(), qrBitmap.getHeight(), R.drawable.ic_close_white_48dp);
qrVerified.setImageBitmap(qrSuccess);
qrVerified.getBackground().setColorFilter(getResources().getColor(R.color.red_500), PorterDuff.Mode.MULTIPLY);
animateVerified();
}
private void animateVerified() {
ScaleAnimation scaleAnimation = new ScaleAnimation(0, 1, 0, 1,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f);
scaleAnimation.setInterpolator(new OvershootInterpolator());
scaleAnimation.setDuration(800);
scaleAnimation.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {}
@Override
public void onAnimationEnd(Animation animation) {
qrVerified.postDelayed(new Runnable() {
@Override
public void run() {
ScaleAnimation scaleAnimation = new ScaleAnimation(1, 0, 1, 0,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f,
ScaleAnimation.RELATIVE_TO_SELF, 0.5f);
scaleAnimation.setInterpolator(new AnticipateInterpolator());
scaleAnimation.setDuration(500);
ViewUtil.animateOut(qrVerified, scaleAnimation, View.GONE);
}
}, 2000);
}
@Override
public void onAnimationRepeat(Animation animation) {}
});
ViewUtil.animateIn(qrVerified, scaleAnimation);
}
}
public static class VerifyScanFragment extends Fragment {
private View container;
private CameraView cameraView;
private ScanningThread scanningThread;
private ScanListener scanListener;
public View onCreateView(LayoutInflater inflater, ViewGroup viewGroup, Bundle bundle) {
this.container = ViewUtil.inflate(inflater, viewGroup, R.layout.verify_scan_fragment);
this.cameraView = ViewUtil.findById(container, R.id.scanner);
return container;
}
@Override
public void onResume() {
super.onResume();
this.scanningThread = new ScanningThread();
this.scanningThread.setScanListener(scanListener);
this.scanningThread.setCharacterSet("ISO-8859-1");
this.cameraView.onResume();
this.cameraView.setPreviewCallback(scanningThread);
this.scanningThread.start();
}
@Override
public void onPause() {
super.onPause();
this.cameraView.onPause();
this.scanningThread.stopScanning();
}
@Override
public void onConfigurationChanged(Configuration newConfiguration) {
super.onConfigurationChanged(newConfiguration);
this.cameraView.onPause();
this.cameraView.onResume();
this.cameraView.setPreviewCallback(scanningThread);
}
public void setScanListener(ScanListener listener) {
if (this.scanningThread != null) scanningThread.setScanListener(listener);
this.scanListener = listener;
}
}
}