Add a private API to get notified about lockout resets

SystemUI uses it to start authentication again after lockout reset
expired.

Bug: 22846755
Change-Id: I90a987c6aa4ac52cc7e7aff1bce262d1db3f12ee

3 files changed, 73 insertions, 2 deletions

diff --git a/core/java/android/hardware/fingerprint/FingerprintManager.java b/core/java/android/hardware/fingerprint/FingerprintManager.java
index 7cff11b..1f23c0a 100644
--- a/core/java/android/hardware/fingerprint/FingerprintManager.java
+++ b/core/java/android/hardware/fingerprint/FingerprintManager.java
@@ -392,6 +392,18 @@ public class FingerprintManager {
     };
 
     /**
+     * @hide
+     */
+    public static abstract class LockoutResetCallback {
+
+        /**
+         * Called when lockout period expired and clients are allowed to listen for fingerprint
+         * again.
+         */
+        public void onLockoutReset() { }
+    };
+
+    /**
      * Request authentication of a crypto object. This call warms up the fingerprint hardware
      * and starts scanning for a fingerprint. It terminates when
      * {@link AuthenticationCallback#onAuthenticationError(int, CharSequence)} or
@@ -680,10 +692,37 @@ public class FingerprintManager {
             try {
                 mService.resetTimeout(token);
             } catch (RemoteException e) {
-                Log.v(TAG, "Remote exception in getAuthenticatorId(): ", e);
+                Log.v(TAG, "Remote exception in resetTimeout(): ", e);
             }
         } else {
-            Log.w(TAG, "getAuthenticatorId(): Service not connected!");
+            Log.w(TAG, "resetTimeout(): Service not connected!");
+        }
+    }
+
+    /**
+     * @hide
+     */
+    public void addLockoutResetCallback(final LockoutResetCallback callback) {
+        if (mService != null) {
+            try {
+                mService.addLockoutResetCallback(
+                        new IFingerprintServiceLockoutResetCallback.Stub() {
+
+                    @Override
+                    public void onLockoutReset(long deviceId) throws RemoteException {
+                        mHandler.post(new Runnable() {
+                            @Override
+                            public void run() {
+                                callback.onLockoutReset();
+                            }
+                        });
+                    }
+                });
+            } catch (RemoteException e) {
+                Log.v(TAG, "Remote exception in addLockoutResetCallback(): ", e);
+            }
+        } else {
+            Log.w(TAG, "addLockoutResetCallback(): Service not connected!");
         }
     }
 
diff --git a/core/java/android/hardware/fingerprint/IFingerprintService.aidl b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
index 3356354..690a751 100644
--- a/core/java/android/hardware/fingerprint/IFingerprintService.aidl
+++ b/core/java/android/hardware/fingerprint/IFingerprintService.aidl
@@ -17,6 +17,7 @@ package android.hardware.fingerprint;
 
 import android.os.Bundle;
 import android.hardware.fingerprint.IFingerprintServiceReceiver;
+import android.hardware.fingerprint.IFingerprintServiceLockoutResetCallback;
 import android.hardware.fingerprint.Fingerprint;
 import java.util.List;
 
@@ -71,4 +72,7 @@ interface IFingerprintService {
 
     // Reset the timeout when user authenticates with strong auth (e.g. PIN, pattern or password)
     void resetTimeout(in byte [] cryptoToken);
+
+    // Add a callback which gets notified when the fingerprint lockout period expired.
+    void addLockoutResetCallback(IFingerprintServiceLockoutResetCallback callback);
 }
diff --git a/core/java/android/hardware/fingerprint/IFingerprintServiceLockoutResetCallback.aidl b/core/java/android/hardware/fingerprint/IFingerprintServiceLockoutResetCallback.aidl
new file mode 100644
index 0000000..c9a5d59
--- /dev/null
+++ b/core/java/android/hardware/fingerprint/IFingerprintServiceLockoutResetCallback.aidl
@@ -0,0 +1,28 @@
+/*
+ * Copyright (C) 2015 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package android.hardware.fingerprint;
+
+import android.hardware.fingerprint.Fingerprint;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+/**
+ * Callback when lockout period expired and clients are allowed to authenticate again.
+ * @hide
+ */
+oneway interface IFingerprintServiceLockoutResetCallback {
+    void onLockoutReset(long deviceId);
+}