FairEmail/app/src/main/java/eu/faircode/email/Helper.java

928 lines
37 KiB
Java

package eu.faircode.email;
/*
This file is part of FairEmail.
FairEmail 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.
FairEmail 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 FairEmail. If not, see <http://www.gnu.org/licenses/>.
Copyright 2018-2019 by Marcel Bokhorst (M66B)
*/
import android.app.Dialog;
import android.app.KeyguardManager;
import android.content.ActivityNotFoundException;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Parcel;
import android.os.PowerManager;
import android.os.StatFs;
import android.text.Spannable;
import android.text.Spanned;
import android.text.TextUtils;
import android.text.format.DateUtils;
import android.text.format.Time;
import android.util.TypedValue;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.view.inputmethod.EditorInfo;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AlertDialog;
import androidx.biometric.BiometricManager;
import androidx.biometric.BiometricPrompt;
import androidx.browser.customtabs.CustomTabsIntent;
import androidx.constraintlayout.widget.ConstraintLayout;
import androidx.core.content.ContextCompat;
import androidx.core.graphics.ColorUtils;
import androidx.fragment.app.FragmentActivity;
import androidx.fragment.app.FragmentManager;
import androidx.preference.PreferenceManager;
import com.google.android.material.bottomnavigation.BottomNavigationView;
import com.sun.mail.iap.BadCommandException;
import com.sun.mail.iap.ConnectionException;
import com.sun.mail.util.FolderClosedIOException;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.StandardCharsets;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.text.DateFormat;
import java.text.DecimalFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Locale;
import java.util.Objects;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;
import javax.mail.FolderClosedException;
import javax.mail.MessageRemovedException;
import javax.mail.MessagingException;
import static android.os.Process.THREAD_PRIORITY_BACKGROUND;
import static androidx.browser.customtabs.CustomTabsService.ACTION_CUSTOM_TABS_CONNECTION;
public class Helper {
static final int NOTIFICATION_SYNCHRONIZE = 1;
static final int NOTIFICATION_SEND = 2;
static final int NOTIFICATION_EXTERNAL = 3;
static final int NOTIFICATION_UPDATE = 4;
static final float LOW_LIGHT = 0.6f;
static final int BUFFER_SIZE = 8192; // Same as in Files class
static final String PGP_BEGIN_MESSAGE = "-----BEGIN PGP MESSAGE-----";
static final String PGP_END_MESSAGE = "-----END PGP MESSAGE-----";
static final String FAQ_URI = "https://github.com/M66B/FairEmail/blob/master/FAQ.md";
static final String XDA_URI = "https://forum.xda-developers.com/showthread.php?t=3824168";
static final String SUPPORT_URI = "https://contact.faircode.eu/?product=fairemailsupport";
static final String TEST_URI = "https://play.google.com/apps/testing/" + BuildConfig.APPLICATION_ID;
static ExecutorService getBackgroundExecutor(int threads, String name) {
ThreadFactory factory = new ThreadFactory() {
private final AtomicInteger threadId = new AtomicInteger();
@Override
public Thread newThread(@NonNull Runnable runnable) {
Thread thread = new Thread(runnable);
thread.setName("FairEmail_bg_" + name + "_" + threadId.getAndIncrement());
thread.setPriority(THREAD_PRIORITY_BACKGROUND);
return thread;
}
};
if (threads == 0)
return new ThreadPoolExecutorEx(
0, Integer.MAX_VALUE,
60L, TimeUnit.SECONDS,
new SynchronousQueue<Runnable>(),
factory);
else
return new ThreadPoolExecutorEx(
threads, threads,
0L, TimeUnit.MILLISECONDS,
new LinkedBlockingQueue<Runnable>(),
factory);
}
private static class ThreadPoolExecutorEx extends ThreadPoolExecutor {
public ThreadPoolExecutorEx(int corePoolSize, int maximumPoolSize, long keepAliveTime, TimeUnit unit, BlockingQueue<Runnable> workQueue, ThreadFactory threadFactory) {
super(corePoolSize, maximumPoolSize, keepAliveTime, unit, workQueue, threadFactory);
}
@Override
protected void beforeExecute(Thread t, Runnable r) {
if (BuildConfig.DEBUG)
Log.i("Executing " + t.getName());
}
}
private static final ExecutorService executor = getBackgroundExecutor(1, "helper");
// Features
static boolean hasPermission(Context context, String name) {
return (ContextCompat.checkSelfPermission(context, name) == PackageManager.PERMISSION_GRANTED);
}
static boolean hasCustomTabs(Context context, Uri uri) {
PackageManager pm = context.getPackageManager();
Intent view = new Intent(Intent.ACTION_VIEW, uri);
for (ResolveInfo info : pm.queryIntentActivities(view, 0)) {
Intent intent = new Intent();
intent.setAction(ACTION_CUSTOM_TABS_CONNECTION);
intent.setPackage(info.activityInfo.packageName);
if (pm.resolveService(intent, 0) != null)
return true;
}
return false;
}
static boolean hasWebView(Context context) {
PackageManager pm = context.getPackageManager();
if (pm.hasSystemFeature(PackageManager.FEATURE_WEBVIEW))
try {
new WebView(context);
return true;
} catch (Throwable ex) {
return false;
}
else
return false;
}
static boolean canPrint(Context context) {
PackageManager pm = context.getPackageManager();
return pm.hasSystemFeature(PackageManager.FEATURE_PRINTING);
}
static Boolean isIgnoringOptimizations(Context context) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
if (pm == null)
return null;
return pm.isIgnoringBatteryOptimizations(BuildConfig.APPLICATION_ID);
}
return null;
}
static boolean isPlayStoreInstall() {
return BuildConfig.PLAY_STORE_RELEASE;
}
// View
static Intent getChooser(Context context, Intent intent) {
PackageManager pm = context.getPackageManager();
if (pm.queryIntentActivities(intent, 0).size() == 1)
return intent;
else
return Intent.createChooser(intent, context.getString(R.string.title_select_app));
}
static void view(Context context, Intent intent) {
Uri uri = intent.getData();
if ("http".equals(uri.getScheme()) || "https".equals(uri.getScheme()))
view(context, intent.getData(), false);
else
context.startActivity(intent);
}
static void view(Context context, Uri uri, boolean browse) {
Log.i("View=" + uri);
if (browse || !hasCustomTabs(context, uri)) {
Intent view = new Intent(Intent.ACTION_VIEW, uri);
context.startActivity(getChooser(context, view));
} else {
// https://developer.chrome.com/multidevice/android/customtabs
CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
builder.setNavigationBarColor(resolveColor(context, R.attr.colorPrimaryDark));
builder.setToolbarColor(resolveColor(context, R.attr.colorPrimary));
CustomTabsIntent customTabsIntent = builder.build();
try {
customTabsIntent.launchUrl(context, uri);
} catch (ActivityNotFoundException ex) {
Log.w(ex);
ToastEx.makeText(context, context.getString(R.string.title_no_viewer, uri.toString()), Toast.LENGTH_LONG).show();
} catch (Throwable ex) {
Log.e(ex);
ToastEx.makeText(context, Helper.formatThrowable(ex, false), Toast.LENGTH_LONG).show();
}
}
}
static void viewFAQ(Context context, int question) {
if (question == 0)
view(context, Uri.parse(FAQ_URI), false);
else
view(context, Uri.parse(Helper.FAQ_URI + "#user-content-faq" + question), false);
}
static Intent getIntentOpenKeychain() {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(BuildConfig.OPENKEYCHAIN_URI));
return intent;
}
static String getOpenKeychainPackage(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
return prefs.getString("openpgp_provider", "org.sufficientlysecure.keychain");
}
static Intent getIntentIssue(Context context) {
if (ActivityBilling.isPro(context)) {
String version = BuildConfig.VERSION_NAME + "/" +
(Helper.hasValidFingerprint(context) ? "1" : "3") +
(BuildConfig.PLAY_STORE_RELEASE ? "p" : "") +
(BuildConfig.DEBUG ? "d" : "") +
(ActivityBilling.isPro(context) ? "+" : "");
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setPackage(BuildConfig.APPLICATION_ID);
intent.setType("text/plain");
try {
intent.putExtra(Intent.EXTRA_EMAIL, new String[]{Log.myAddress().getAddress()});
} catch (UnsupportedEncodingException ex) {
Log.w(ex);
}
intent.putExtra(Intent.EXTRA_SUBJECT, context.getString(R.string.title_issue_subject, version));
return intent;
} else
return new Intent(Intent.ACTION_VIEW, Uri.parse(XDA_URI));
}
// Graphics
static int dp2pixels(Context context, int dp) {
float scale = context.getResources().getDisplayMetrics().density;
return Math.round(dp * scale);
}
static int pixels2dp(Context context, float pixels) {
float scale = context.getResources().getDisplayMetrics().density;
return Math.round(pixels / scale);
}
static float getTextSize(Context context, int zoom) {
TypedArray ta = null;
try {
if (zoom == 0)
ta = context.obtainStyledAttributes(
R.style.TextAppearance_AppCompat_Small, new int[]{android.R.attr.textSize});
else if (zoom == 2)
ta = context.obtainStyledAttributes(
R.style.TextAppearance_AppCompat_Large, new int[]{android.R.attr.textSize});
else
ta = context.obtainStyledAttributes(
R.style.TextAppearance_AppCompat_Medium, new int[]{android.R.attr.textSize});
return ta.getDimension(0, 0);
} finally {
if (ta != null)
ta.recycle();
}
}
static int resolveColor(Context context, int attr) {
int[] attrs = new int[]{attr};
TypedArray a = context.getTheme().obtainStyledAttributes(attrs);
int color = a.getColor(0, 0xFF0000);
a.recycle();
return color;
}
static void setViewsEnabled(ViewGroup view, boolean enabled) {
for (int i = 0; i < view.getChildCount(); i++) {
View child = view.getChildAt(i);
if (child instanceof Spinner ||
child instanceof EditText ||
child instanceof CheckBox ||
child instanceof ImageView /* =ImageButton */ ||
child instanceof RadioButton ||
(child instanceof Button && "disable".equals(child.getTag())))
child.setEnabled(enabled);
else if (child instanceof BottomNavigationView) {
Menu menu = ((BottomNavigationView) child).getMenu();
menu.setGroupEnabled(0, enabled);
} else if (child instanceof ViewGroup)
setViewsEnabled((ViewGroup) child, enabled);
}
}
static void hide(View view) {
view.setPadding(0, 0, 0, 0);
ViewGroup.LayoutParams lparam = view.getLayoutParams();
lparam.width = 0;
lparam.height = 0;
if (lparam instanceof ConstraintLayout.LayoutParams)
((ConstraintLayout.LayoutParams) lparam).setMargins(0, 0, 0, 0);
view.setLayoutParams(lparam);
}
static boolean isDarkTheme(Context context) {
TypedValue tv = new TypedValue();
context.getTheme().resolveAttribute(R.attr.themeName, tv, true);
return (tv.string != null && !"light".contentEquals(tv.string));
}
static int adjustLuminance(int color, boolean dark, float min) {
float lum = (float) ColorUtils.calculateLuminance(color);
if (dark ? lum < min : lum > 1 - min)
return ColorUtils.blendARGB(color,
dark ? Color.WHITE : Color.BLACK,
dark ? min - lum : lum - (1 - min));
return color;
}
// Formatting
private static final DecimalFormat df = new DecimalFormat("@@");
static String humanReadableByteCount(long bytes, boolean si) {
int unit = si ? 1000 : 1024;
if (bytes < unit) return bytes + " B";
int exp = (int) (Math.log(bytes) / Math.log(unit));
String pre = (si ? "kMGTPE" : "KMGTPE").charAt(exp - 1) + (si ? "" : "i");
return df.format(bytes / Math.pow(unit, exp)) + " " + pre + "B";
}
// https://issuetracker.google.com/issues/37054851
static DateFormat getTimeInstance(Context context) {
return Helper.getTimeInstance(context, SimpleDateFormat.MEDIUM);
}
static DateFormat getDateInstance(Context context) {
return SimpleDateFormat.getDateInstance(SimpleDateFormat.MEDIUM);
}
static DateFormat getTimeInstance(Context context, int style) {
if (context != null &&
(style == SimpleDateFormat.SHORT || style == SimpleDateFormat.MEDIUM)) {
Locale locale = Locale.getDefault();
boolean is24Hour = android.text.format.DateFormat.is24HourFormat(context);
String skeleton = (is24Hour ? "Hm" : "hm");
if (style == SimpleDateFormat.MEDIUM)
skeleton += "s";
String pattern = android.text.format.DateFormat.getBestDateTimePattern(locale, skeleton);
return new SimpleDateFormat(pattern, locale);
} else
return SimpleDateFormat.getTimeInstance(style);
}
static DateFormat getDateTimeInstance(Context context) {
return Helper.getDateTimeInstance(context, SimpleDateFormat.MEDIUM, SimpleDateFormat.MEDIUM);
}
static DateFormat getDateTimeInstance(Context context, int dateStyle, int timeStyle) {
// TODO fix time format
return SimpleDateFormat.getDateTimeInstance(dateStyle, timeStyle);
}
static CharSequence getRelativeTimeSpanString(Context context, long millis) {
long now = System.currentTimeMillis();
long span = Math.abs(now - millis);
Time nowTime = new Time();
Time thenTime = new Time();
nowTime.set(now);
thenTime.set(millis);
if (span < DateUtils.DAY_IN_MILLIS && nowTime.weekDay == thenTime.weekDay)
return getTimeInstance(context, SimpleDateFormat.SHORT).format(millis);
else
return DateUtils.getRelativeTimeSpanString(context, millis);
}
static String ellipsize(String text, int maxLen) {
if (text == null || text.length() < maxLen) {
return text;
}
return text.substring(0, maxLen) + "...";
}
static void clearComposingText(Spannable text) {
Object[] spans = text.getSpans(0, text.length(), Object.class);
for (Object span : spans)
if ((text.getSpanFlags(span) & Spanned.SPAN_COMPOSING) != 0)
text.removeSpan(span);
}
static String localizeFolderType(Context context, String type) {
int resid = context.getResources().getIdentifier(
"title_folder_" + type.toLowerCase(Locale.ROOT),
"string",
context.getPackageName());
return (resid > 0 ? context.getString(resid) : type);
}
static String localizeFolderName(Context context, String name) {
if (name != null && "INBOX".equals(name.toUpperCase()))
return context.getString(R.string.title_folder_inbox);
else if ("OUTBOX".equals(name))
return context.getString(R.string.title_folder_outbox);
else
return name;
}
static String formatThrowable(Throwable ex) {
return formatThrowable(ex, true);
}
static String formatThrowable(Throwable ex, boolean santize) {
return formatThrowable(ex, " ", santize);
}
static String formatThrowable(Throwable ex, String separator, boolean sanitize) {
if (sanitize) {
if (ex instanceof MessageRemovedException)
return null;
if (ex instanceof MessagingException &&
ex.getCause() instanceof ConnectionException &&
ex.getCause().getMessage() != null &&
(ex.getCause().getMessage().contains("Read error") ||
ex.getCause().getMessage().contains("Write error")))
return null;
// javax.mail.MessagingException: AU3 BAD User is authenticated but not connected.;
// nested exception is:
// com.sun.mail.iap.BadCommandException: AU3 BAD User is authenticated but not connected.
// javax.mail.MessagingException: AU3 BAD User is authenticated but not connected.;
// nested exception is:
// com.sun.mail.iap.BadCommandException: AU3 BAD User is authenticated but not connected.
// at com.sun.mail.imap.IMAPFolder.logoutAndThrow(SourceFile:1156)
// at com.sun.mail.imap.IMAPFolder.open(SourceFile:1063)
// at com.sun.mail.imap.IMAPFolder.open(SourceFile:977)
// at eu.faircode.email.ServiceSynchronize.monitorAccount(SourceFile:890)
// at eu.faircode.email.ServiceSynchronize.access$1500(SourceFile:85)
// at eu.faircode.email.ServiceSynchronize$7$1.run(SourceFile:627)
// at java.lang.Thread.run(Thread.java:764)
// Caused by: com.sun.mail.iap.BadCommandException: AU3 BAD User is authenticated but not connected.
// at com.sun.mail.iap.Protocol.handleResult(SourceFile:415)
// at com.sun.mail.imap.protocol.IMAPProtocol.select(SourceFile:1230)
// at com.sun.mail.imap.IMAPFolder.open(SourceFile:1034)
if (ex instanceof MessagingException &&
ex.getCause() instanceof BadCommandException &&
ex.getCause().getMessage() != null &&
ex.getCause().getMessage().contains("User is authenticated but not connected"))
return null;
if (ex instanceof IOException &&
ex.getCause() instanceof MessageRemovedException)
return null;
if (ex instanceof ConnectionException)
return null;
if (ex instanceof FolderClosedException || ex instanceof FolderClosedIOException)
return null;
if (ex instanceof IllegalStateException &&
("Not connected".equals(ex.getMessage()) ||
"This operation is not allowed on a closed folder".equals(ex.getMessage())))
return null;
if (ex instanceof Core.AlertException)
return ex.getMessage();
}
StringBuilder sb = new StringBuilder();
if (BuildConfig.DEBUG)
sb.append(ex.toString());
else
sb.append(ex.getMessage() == null ? ex.getClass().getName() : ex.getMessage());
Throwable cause = ex.getCause();
while (cause != null) {
if (BuildConfig.DEBUG)
sb.append(separator).append(cause.toString());
else
sb.append(separator).append(cause.getMessage() == null ? cause.getClass().getName() : cause.getMessage());
cause = cause.getCause();
}
return sb.toString();
}
static void unexpectedError(FragmentManager manager, Throwable ex) {
Log.e(ex);
Bundle args = new Bundle();
args.putSerializable("ex", ex);
FragmentDialogUnexpected fragment = new FragmentDialogUnexpected();
fragment.setArguments(args);
fragment.show(manager, "error:unexpected");
}
public static class FragmentDialogUnexpected extends FragmentDialogBase {
@NonNull
@Override
public Dialog onCreateDialog(@Nullable Bundle savedInstanceState) {
final Throwable ex = (Throwable) getArguments().getSerializable("ex");
return new AlertDialog.Builder(getContext())
.setTitle(R.string.title_unexpected_error)
.setMessage(Helper.formatThrowable(ex, false))
.setPositiveButton(android.R.string.cancel, null)
.setNeutralButton(R.string.title_report, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// Dialog will be dismissed
final Context context = getContext();
new SimpleTask<Long>() {
@Override
protected Long onExecute(Context context, Bundle args) throws Throwable {
return Log.getDebugInfo(context, R.string.title_crash_info_remark, ex, null).id;
}
@Override
protected void onExecuted(Bundle args, Long id) {
context.startActivity(new Intent(context, ActivityCompose.class)
.putExtra("action", "edit")
.putExtra("id", id));
}
@Override
protected void onException(Bundle args, Throwable ex) {
if (ex instanceof IllegalArgumentException)
ToastEx.makeText(context, ex.getMessage(), Toast.LENGTH_LONG).show();
else
ToastEx.makeText(context, ex.toString(), Toast.LENGTH_LONG).show();
}
}.execute(getContext(), getActivity(), new Bundle(), "error:unexpected");
}
})
.create();
}
}
static void linkPro(final TextView tv) {
if (ActivityBilling.isPro(tv.getContext()) && !BuildConfig.DEBUG)
hide(tv);
else {
tv.getPaint().setUnderlineText(true);
tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
tv.getContext().startActivity(new Intent(tv.getContext(), ActivityBilling.class));
}
});
}
}
// Files
static String sanitizeFilename(String name) {
if (name == null)
return null;
return name.replaceAll("[?:\"*|/\\\\<>]", "_");
}
static String getExtension(String filename) {
if (filename == null)
return null;
int index = filename.lastIndexOf(".");
if (index < 0)
return null;
return filename.substring(index + 1);
}
static void writeText(File file, String content) throws IOException {
try (FileOutputStream out = new FileOutputStream(file)) {
if (content != null)
out.write(content.getBytes());
}
}
static String readStream(InputStream is, String charset) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream(Math.max(BUFFER_SIZE, is.available()));
byte[] buffer = new byte[BUFFER_SIZE];
for (int len = is.read(buffer); len != -1; len = is.read(buffer))
os.write(buffer, 0, len);
return new String(os.toByteArray(), charset);
}
static String readText(File file) throws IOException {
try (FileInputStream in = new FileInputStream(file)) {
return readStream(in, StandardCharsets.UTF_8.name());
}
}
static void copy(File src, File dst) throws IOException {
try (InputStream in = new FileInputStream(src)) {
try (FileOutputStream out = new FileOutputStream(dst)) {
byte[] buf = new byte[BUFFER_SIZE];
int len;
while ((len = in.read(buf)) > 0)
out.write(buf, 0, len);
}
}
}
static long getStorageSpace() {
StatFs stats = new StatFs(Environment.getDataDirectory().getAbsolutePath());
return stats.getAvailableBlocksLong() * stats.getBlockSizeLong();
}
// Cryptography
static String sha256(String data) throws NoSuchAlgorithmException {
return sha256(data.getBytes());
}
static String sha256(byte[] data) throws NoSuchAlgorithmException {
byte[] bytes = MessageDigest.getInstance("SHA-256").digest(data);
StringBuilder sb = new StringBuilder();
for (byte b : bytes)
sb.append(String.format("%02x", b));
return sb.toString();
}
static String getFingerprint(Context context) {
try {
PackageManager pm = context.getPackageManager();
String pkg = context.getPackageName();
PackageInfo info = pm.getPackageInfo(pkg, PackageManager.GET_SIGNATURES);
byte[] cert = info.signatures[0].toByteArray();
MessageDigest digest = MessageDigest.getInstance("SHA1");
byte[] bytes = digest.digest(cert);
StringBuilder sb = new StringBuilder();
for (byte b : bytes)
sb.append(Integer.toString(b & 0xff, 16).toUpperCase());
return sb.toString();
} catch (Throwable ex) {
Log.e(ex);
return null;
}
}
static boolean hasValidFingerprint(Context context) {
String signed = getFingerprint(context);
String expected = context.getString(R.string.fingerprint);
return Objects.equals(signed, expected);
}
static boolean canAuthenticate(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
String pin = prefs.getString("pin", null);
if (!TextUtils.isEmpty(pin))
return true;
BiometricManager bm = BiometricManager.from(context);
return (bm.canAuthenticate() == BiometricManager.BIOMETRIC_SUCCESS);
}
static boolean shouldAuthenticate(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
boolean biometrics = prefs.getBoolean("biometrics", false);
String pin = prefs.getString("pin", null);
if (biometrics || !TextUtils.isEmpty(pin)) {
long now = new Date().getTime();
long last_authentication = prefs.getLong("last_authentication", 0);
long biometrics_timeout = prefs.getInt("biometrics_timeout", 2) * 60 * 1000L;
Log.i("Authentication valid until=" + new Date(last_authentication + biometrics_timeout));
if (last_authentication + biometrics_timeout < now)
return true;
prefs.edit().putLong("last_authentication", now).apply();
}
return false;
}
static void authenticate(final FragmentActivity activity,
Boolean enabled, final
Runnable authenticated, final Runnable cancelled) {
final Handler handler = new Handler();
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
String pin = prefs.getString("pin", null);
if (enabled != null || TextUtils.isEmpty(pin)) {
BiometricPrompt.PromptInfo.Builder info = new BiometricPrompt.PromptInfo.Builder()
.setTitle(activity.getString(enabled == null ? R.string.app_name : R.string.title_setup_biometrics));
KeyguardManager kgm = (KeyguardManager) activity.getSystemService(Context.KEYGUARD_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && kgm != null && kgm.isDeviceSecure())
info.setDeviceCredentialAllowed(true);
else
info.setNegativeButtonText(activity.getString(android.R.string.cancel));
info.setSubtitle(activity.getString(enabled == null ? R.string.title_setup_biometrics_unlock
: enabled
? R.string.title_setup_biometrics_disable
: R.string.title_setup_biometrics_enable));
BiometricPrompt prompt = new BiometricPrompt(activity, executor,
new BiometricPrompt.AuthenticationCallback() {
@Override
public void onAuthenticationError(final int errorCode, @NonNull final CharSequence errString) {
Log.w("Biometric error " + errorCode + ": " + errString);
if (errorCode != BiometricPrompt.ERROR_NEGATIVE_BUTTON &&
errorCode != BiometricPrompt.ERROR_CANCELED &&
errorCode != BiometricPrompt.ERROR_USER_CANCELED)
handler.post(new Runnable() {
@Override
public void run() {
ToastEx.makeText(activity,
"Error " + errorCode + ": " + errString,
Toast.LENGTH_LONG).show();
}
});
handler.post(cancelled);
}
@Override
public void onAuthenticationSucceeded(@NonNull BiometricPrompt.AuthenticationResult result) {
Log.i("Biometric succeeded");
setAuthenticated(activity);
handler.post(authenticated);
}
@Override
public void onAuthenticationFailed() {
Log.w("Biometric failed");
handler.post(cancelled);
}
});
prompt.authenticate(info.build());
} else {
final View dview = LayoutInflater.from(activity).inflate(R.layout.dialog_pin_ask, null);
final EditText etPin = dview.findViewById(R.id.etPin);
final AlertDialog dialog = new AlertDialog.Builder(activity)
.setView(dview)
.setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
String pin = prefs.getString("pin", "");
String entered = etPin.getText().toString();
if (pin.equals(entered)) {
setAuthenticated(activity);
handler.post(authenticated);
} else
handler.post(cancelled);
}
})
.setNegativeButton(android.R.string.cancel, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
handler.post(cancelled);
}
})
.setOnDismissListener(new DialogInterface.OnDismissListener() {
@Override
public void onDismiss(DialogInterface dialog) {
handler.post(cancelled);
}
})
.create();
etPin.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
dialog.getButton(DialogInterface.BUTTON_POSITIVE).performClick();
return true;
} else
return false;
}
});
etPin.setOnFocusChangeListener(new View.OnFocusChangeListener() {
@Override
public void onFocusChange(View v, boolean hasFocus) {
if (hasFocus)
dialog.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
}
});
new Handler().post(new Runnable() {
@Override
public void run() {
etPin.requestFocus();
}
});
dialog.show();
}
}
static void setAuthenticated(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
prefs.edit().putLong("last_authentication", new Date().getTime()).apply();
}
static void clearAuthentication(Context context) {
SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
prefs.edit().remove("last_authentication").apply();
}
// Miscellaneous
static <T> List<List<T>> chunkList(List<T> list, int size) {
List<List<T>> result = new ArrayList<>(list.size() / size);
for (int i = 0; i < list.size(); i += size)
result.add(list.subList(i, i + size < list.size() ? i + size : list.size()));
return result;
}
static long[] toLongArray(List<Long> list) {
long[] result = new long[list.size()];
for (int i = 0; i < list.size(); i++)
result[i] = list.get(i);
return result;
}
static List<Long> fromLongArray(long[] array) {
List<Long> result = new ArrayList<>();
for (int i = 0; i < array.length; i++)
result.add(array[i]);
return result;
}
static boolean equal(String[] a1, String[] a2) {
if (a1.length != a2.length)
return false;
for (int i = 0; i < a1.length; i++)
if (!a1[i].equals(a2[i]))
return false;
return true;
}
static int getSize(Bundle bundle) {
Parcel p = Parcel.obtain();
bundle.writeToParcel(p, 0);
return p.dataSize();
}
}