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Code Issues Projects Releases Wiki Activity

ScreenLock: Implement fingerprint unlocking with BiometricPromptCompat

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This commit is contained in:
Torsten Grote
2018-08-07 18:33:11 -03:00
parent de63141997
commit c5d374af04
7 changed files with 104 additions and 22 deletions
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5
briar-android/build.gradle
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@@ -33,6 +33,7 @@ dependencies {
implementation 'com.google.zxing:core:3.3.0'
implementation 'uk.co.samuelwall:material-tap-target-prompt:2.8.0'
implementation 'com.vanniktech:emoji-google:0.5.1'
implementation 'moe.feng.support.biometricprompt:library:1.0.1'
annotationProcessor 'com.google.dagger:dagger-compiler:2.0.2'
@@ -75,8 +76,8 @@ def getStdout = { command, defaultValue ->
}
android {
compileSdkVersion 27
buildToolsVersion '27.0.3'
compileSdkVersion 28
buildToolsVersion '28.0.2'
defaultConfig {
minSdkVersion 15

7
briar-android/src/main/AndroidManifest.xml
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@@ -1,7 +1,10 @@
<?xml version="1.0" encoding="utf-8"?>
<manifest
package="org.briarproject.briar"
xmlns:android="http://schemas.android.com/apk/res/android">
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools">
<uses-sdk tools:overrideLibrary="moe.feng.support.biometricprompt"/>
<uses-feature android:name="android.hardware.bluetooth" android:required="false"/>
<uses-feature android:name="android.hardware.camera" android:required="false"/>
@@ -17,6 +20,8 @@
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission-sdk-23 android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
<uses-permission-sdk-23 android:name="android.permission.USE_FINGERPRINT" />
<uses-permission-sdk-23 android:name="android.permission.USE_BIOMETRIC" />
<application
android:name="org.briarproject.briar.android.BriarApplicationImpl"

80
briar-android/src/main/java/org/briarproject/briar/android/login/UnlockActivity.java
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@@ -3,9 +3,12 @@ package org.briarproject.briar.android.login;
import android.app.KeyguardManager;
import android.content.Intent;
import android.os.Bundle;
import android.os.CancellationSignal;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.widget.Button;
import android.widget.Toast;
import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
@@ -18,8 +21,19 @@ import java.util.logging.Logger;
import javax.inject.Inject;
import moe.feng.support.biometricprompt.BiometricPromptCompat;
import moe.feng.support.biometricprompt.BiometricPromptCompat.Builder;
import moe.feng.support.biometricprompt.BiometricPromptCompat.IAuthenticationCallback;
import moe.feng.support.biometricprompt.BiometricPromptCompat.IAuthenticationResult;
import static android.os.Build.VERSION.SDK_INT;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.BIOMETRIC_ERROR_CANCELED;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.BIOMETRIC_ERROR_LOCKOUT;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.BIOMETRIC_ERROR_LOCKOUT_PERMANENT;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.BIOMETRIC_ERROR_USER_CANCELED;
import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_KEYGUARD_UNLOCK;
import static org.briarproject.briar.android.util.UiUtils.hasKeyguardLock;
import static org.briarproject.briar.android.util.UiUtils.hasUsableFingerprint;
@RequiresApi(21)
@MethodsNotNullByDefault
@@ -46,7 +60,7 @@ public class UnlockActivity extends BaseActivity {
setContentView(R.layout.activity_unlock);
Button button = findViewById(R.id.unlock);
button.setOnClickListener(view -> requestKeyguardUnlock());
button.setOnClickListener(view -> requestUnlock());
keyguardShown = state != null && state.getBoolean(KEYGUARD_SHOWN);
}
@@ -83,18 +97,80 @@ public class UnlockActivity extends BaseActivity {
// Check if app is still locked, lockable
// and not finishing (which is possible if recreated)
if (!keyguardShown && lockManager.isLocked() && !isFinishing()) {
requestKeyguardUnlock();
requestUnlock();
} else if (!lockManager.isLocked()) {
setResult(RESULT_OK);
finish();
}
}
private void requestUnlock() {
if (hasUsableFingerprint(this)) {
requestFingerprintUnlock();
} else {
requestKeyguardUnlock();
}
}
@Override
public void onBackPressed() {
moveTaskToBack(true);
}
private void requestFingerprintUnlock() {
BiometricPromptCompat biometricPrompt = new Builder(this)
.setTitle(R.string.lock_unlock)
.setDescription(R.string.lock_unlock_fingerprint_description)
.setNegativeButton(R.string.lock_unlock_password,
(dialog, which) -> {
requestKeyguardUnlock();
})
.build();
CancellationSignal signal = new CancellationSignal();
biometricPrompt.authenticate(signal, new IAuthenticationCallback() {
@Override
public void onAuthenticationError(int errorCode,
@Nullable CharSequence errString) {
// when back button is pressed while fingerprint dialog shows
if (errorCode == BIOMETRIC_ERROR_CANCELED ||
errorCode == BIOMETRIC_ERROR_USER_CANCELED) {
finish();
}
// locked out due to 5 failed attempts, lasts for 30 seconds
else if (errorCode == BIOMETRIC_ERROR_LOCKOUT ||
errorCode == BIOMETRIC_ERROR_LOCKOUT_PERMANENT) {
if (hasKeyguardLock(UnlockActivity.this)) {
requestKeyguardUnlock();
} else {
// normally fingerprints require a screen lock, but
// who knows if that's true for all devices out there
Toast.makeText(UnlockActivity.this, errString,
Toast.LENGTH_LONG).show();
finish();
}
} else {
Toast.makeText(UnlockActivity.this, errString,
Toast.LENGTH_LONG).show();
}
}
@Override
public void onAuthenticationHelp(int helpCode,
@Nullable CharSequence helpString) {
}
@Override
public void onAuthenticationSucceeded(
@NonNull IAuthenticationResult result) {
unlock();
}
@Override
public void onAuthenticationFailed() {
}
});
}
private void requestKeyguardUnlock() {
KeyguardManager keyguardManager =
(KeyguardManager) getSystemService(KEYGUARD_SERVICE);

11
briar-android/src/main/java/org/briarproject/briar/android/util/UiUtils.java
View File

@@ -59,6 +59,8 @@ import static android.text.format.DateUtils.FORMAT_ABBREV_TIME;
import static android.text.format.DateUtils.FORMAT_SHOW_DATE;
import static android.text.format.DateUtils.MINUTE_IN_MILLIS;
import static android.text.format.DateUtils.WEEK_IN_MILLIS;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.hasEnrolledFingerprints;
import static moe.feng.support.biometricprompt.BiometricPromptCompat.isHardwareDetected;
import static org.briarproject.briar.BuildConfig.APPLICATION_ID;
import static org.briarproject.briar.android.TestingConstants.EXPIRY_DATE;
@@ -261,6 +263,10 @@ public class UiUtils {
}
public static boolean hasScreenLock(Context ctx) {
return hasKeyguardLock(ctx) || hasUsableFingerprint(ctx);
}
public static boolean hasKeyguardLock(Context ctx) {
if (SDK_INT < 21) return false;
KeyguardManager keyguardManager =
(KeyguardManager) ctx.getSystemService(KEYGUARD_SERVICE);
@@ -271,6 +277,11 @@ public class UiUtils {
(SDK_INT >= 23 && keyguardManager.isDeviceSecure());
}
public static boolean hasUsableFingerprint(Context ctx) {
return SDK_INT >= 23 && isHardwareDetected(ctx) &&
hasEnrolledFingerprints(ctx);
}
public static void triggerFeedback(AndroidExecutor androidExecutor) {
androidExecutor.runOnBackgroundThread(
() -> ACRA.getErrorReporter()

20
briar-android/src/main/res/layout/activity_unlock.xml
View File

@@ -14,26 +14,12 @@
android:layout_height="150dp"
android:layout_margin="@dimen/margin_large"
android:src="@drawable/splash_screen"
app:layout_constraintBottom_toTopOf="@+id/is_locked"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_chainStyle="spread"
app:tint="?attr/colorControlNormal"/>
<TextView
android:id="@+id/is_locked"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="@dimen/margin_large"
android:gravity="center"
android:text="@string/lock_is_locked"
android:textSize="@dimen/text_size_xlarge"
app:layout_constraintBottom_toTopOf="@+id/unlock"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/image"
app:layout_constraintVertical_chainStyle="spread"/>
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.1"
app:tint="?attr/colorControlNormal"/>
<Button
android:id="@+id/unlock"

2
briar-android/src/main/res/values/strings.xml
View File

@@ -475,6 +475,8 @@
<!-- App Locking -->
<string name="lock_unlock">Unlock Briar</string>
<string name="lock_unlock_verbose">Enter your device PIN, pattern or password to unlock Briar</string>
<string name="lock_unlock_fingerprint_description">Touch your fingerprint sensor with the registered finger to continue</string>
<string name="lock_unlock_password">Use Password</string>
<string name="lock_is_locked">Briar is locked</string>
<string name="lock_tap_to_unlock">Tap to unlock</string>

1
briar-android/witness.gradle
View File

@@ -100,6 +100,7 @@ dependencyVerification {
'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
'javax.xml.bind:jaxb-api:2.2.12-b140109.1041:jaxb-api-2.2.12-b140109.1041.jar:b5e60cd8b7b5ff01ce4a74c5dd008f4fbd14ced3495d0b47b85cfedc182211f2',
'junit:junit:4.12:junit-4.12.jar:59721f0805e223d84b90677887d9ff567dc534d7c502ca903c0c2b17f05c116a',
'moe.feng.support.biometricprompt:library:1.0.1:library-1.0.1.aar:2cf011abdc9c51a505b35f421197b4fbeba79af792e9ea1ca973f1aef087dacd',
'nekohtml:nekohtml:1.9.6.2:nekohtml-1.9.6.2.jar:fdff6cfa9ed9cc911c842a5d2395f209ec621ef1239d46810e9e495809d3ae09',
'nekohtml:xercesMinimal:1.9.6.2:xercesMinimal-1.9.6.2.jar:95b8b357d19f63797dd7d67622fd3f18374d64acbc6584faba1c7759a31e8438',
'net.bytebuddy:byte-buddy-agent:1.7.9:byte-buddy-agent-1.7.9.jar:ac1a993befb528c3271a83a9ad9c42d363d399e9deb26e0470e3c4962066c550',