forked from expo/expo
/
LocalAuthenticationModule.java
227 lines (194 loc) · 7.62 KB
/
LocalAuthenticationModule.java
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// Copyright 2015-present 650 Industries. All rights reserved.
package expo.modules.localauthentication;
import android.app.Activity;
import android.app.KeyguardManager;
import android.content.Context;
import android.os.Build;
import android.os.Bundle;
import androidx.core.os.CancellationSignal;
import androidx.biometric.BiometricManager;
import androidx.biometric.BiometricPrompt;
import androidx.fragment.app.FragmentActivity;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import org.unimodules.core.ExportedModule;
import org.unimodules.core.ModuleRegistry;
import org.unimodules.core.Promise;
import org.unimodules.core.interfaces.ActivityProvider;
import org.unimodules.core.interfaces.ExpoMethod;
import org.unimodules.core.interfaces.services.UIManager;
public class LocalAuthenticationModule extends ExportedModule {
private final BiometricManager mBiometricManager;
private CancellationSignal mCancellationSignal;
private Promise mPromise;
private boolean mIsAuthenticating = false;
private ModuleRegistry mModuleRegistry;
private UIManager mUIManager;
private static final int AUTHENTICATION_TYPE_FINGERPRINT = 1;
private final BiometricPrompt.AuthenticationCallback mAuthenticationCallback =
new BiometricPrompt.AuthenticationCallback () {
@Override
public void onAuthenticationSucceeded(BiometricPrompt.AuthenticationResult result) {
mIsAuthenticating = false;
Bundle successResult = new Bundle();
successResult.putBoolean("success", true);
safeResolve(successResult);
}
@Override
public void onAuthenticationError(int errMsgId, CharSequence errString) {
mIsAuthenticating = false;
Bundle errorResult = new Bundle();
errorResult.putBoolean("success", false);
errorResult.putString("error", convertErrorCode(errMsgId));
errorResult.putString("message", errString.toString());
safeResolve(errorResult);
}
};
public LocalAuthenticationModule(Context context) {
super(context);
mBiometricManager = BiometricManager.from(context);
}
@Override
public String getName() {
return "ExpoLocalAuthentication";
}
@Override
public void onCreate(ModuleRegistry moduleRegistry) {
mModuleRegistry = moduleRegistry;
mUIManager = moduleRegistry.getModule(UIManager.class);
}
@ExpoMethod
public void supportedAuthenticationTypesAsync(final Promise promise) {
int result = mBiometricManager.canAuthenticate();
List<Integer> results = new ArrayList<>();
if (result != BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE) {
results.add(AUTHENTICATION_TYPE_FINGERPRINT);
}
promise.resolve(results);
}
@ExpoMethod
public void hasHardwareAsync(final Promise promise) {
int result = mBiometricManager.canAuthenticate();
promise.resolve(result != BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE);
}
@ExpoMethod
public void isEnrolledAsync(final Promise promise) {
int result = mBiometricManager.canAuthenticate();
promise.resolve(result == BiometricManager.BIOMETRIC_SUCCESS);
}
@ExpoMethod
public void authenticateAsync(final Map<String, Object> options, final Promise promise) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
promise.reject("E_NOT_SUPPORTED", "Cannot display biometric prompt on android versions below 6.0");
return;
}
if (getCurrentActivity() == null) {
promise.reject("E_NOT_FOREGROUND", "Cannot display biometric prompt when the app is not in the foreground");
return;
}
if (getKeyguardManager().isDeviceSecure() == false) {
Bundle errorResult = new Bundle();
errorResult.putBoolean("success", false);
errorResult.putString("error", "not_enrolled");
errorResult.putString("message", "KeyguardManager#isDeviceSecure() returned false");
promise.resolve(errorResult);
return;
}
// BiometricPrompt callbacks are invoked on the main thread so also run this there to avoid
// having to do locking.
mUIManager.runOnUiQueueThread(new Runnable() {
@Override
public void run() {
if (mIsAuthenticating) {
Bundle cancelResult = new Bundle();
cancelResult.putBoolean("success", false);
cancelResult.putString("error", "app_cancel");
safeResolve(cancelResult);
mPromise = promise;
return;
}
String promptMessage = "";
String cancelLabel = "";
boolean disableDeviceFallback = false;
if (options.containsKey("promptMessage")) {
promptMessage = (String) options.get("promptMessage");
}
if (options.containsKey("cancelLabel")) {
cancelLabel = (String) options.get("cancelLabel");
}
if (options.containsKey("disableDeviceFallback")) {
disableDeviceFallback = (Boolean) options.get("disableDeviceFallback");
}
mIsAuthenticating = true;
mPromise = promise;
mCancellationSignal = new CancellationSignal();
FragmentActivity fragmentActivity = (FragmentActivity) getCurrentActivity();
Executor executor = Executors.newSingleThreadExecutor();
BiometricPrompt biometricPrompt = new BiometricPrompt(fragmentActivity, executor, mAuthenticationCallback);
BiometricPrompt.PromptInfo.Builder promptInfoBuilder = new BiometricPrompt.PromptInfo.Builder()
.setDeviceCredentialAllowed(!disableDeviceFallback)
.setTitle(promptMessage);
if (cancelLabel != null && disableDeviceFallback) {
promptInfoBuilder.setNegativeButtonText(cancelLabel);
}
BiometricPrompt.PromptInfo promptInfo = promptInfoBuilder.build();
biometricPrompt.authenticate(promptInfo);
}
});
}
@ExpoMethod
public void cancelAuthenticate(final Promise promise) {
mUIManager.runOnUiQueueThread(new Runnable() {
@Override
public void run() {
safeCancel();
}
});
}
private void safeCancel() {
if (mCancellationSignal != null) {
mCancellationSignal.cancel();
mCancellationSignal = null;
}
}
private void safeResolve(Object result) {
if (mPromise != null) {
mPromise.resolve(result);
mPromise = null;
}
}
private static String convertErrorCode(int code) {
switch (code) {
case BiometricPrompt.ERROR_CANCELED:
case BiometricPrompt.ERROR_NEGATIVE_BUTTON:
case BiometricPrompt.ERROR_USER_CANCELED:
return "user_cancel";
case BiometricPrompt.ERROR_HW_NOT_PRESENT:
case BiometricPrompt.ERROR_HW_UNAVAILABLE:
case BiometricPrompt.ERROR_NO_BIOMETRICS:
case BiometricPrompt.ERROR_NO_DEVICE_CREDENTIAL:
return "not_available";
case BiometricPrompt.ERROR_LOCKOUT:
case BiometricPrompt.ERROR_LOCKOUT_PERMANENT:
return "lockout";
case BiometricPrompt.ERROR_NO_SPACE:
return "no_space";
case BiometricPrompt.ERROR_TIMEOUT:
return "timeout";
case BiometricPrompt.ERROR_UNABLE_TO_PROCESS:
return "unable_to_process";
default:
return "unknown";
}
}
private KeyguardManager getKeyguardManager() {
return (KeyguardManager) getCurrentActivity().getApplicationContext().getSystemService(Context.KEYGUARD_SERVICE);
}
private Activity getCurrentActivity() {
ActivityProvider activityProvider = mModuleRegistry.getModule(ActivityProvider.class);
return activityProvider != null ? activityProvider.getCurrentActivity() : null;
}
}