Merge "Revert "finished implementation of fingerprintservice enumerate"" into oc-dev
diff --git a/services/core/java/com/android/server/fingerprint/EnumerateClient.java b/services/core/java/com/android/server/fingerprint/EnumerateClient.java
index 1b8b89c..34f245f 100644
--- a/services/core/java/com/android/server/fingerprint/EnumerateClient.java
+++ b/services/core/java/com/android/server/fingerprint/EnumerateClient.java
@@ -58,7 +58,7 @@
     public int stop(boolean initiatedByClient) {
         IBiometricsFingerprint daemon = getFingerprintDaemon();
         if (daemon == null) {
-            Slog.w(TAG, "stopEnumeration: no fingerprint HAL!");
+            Slog.w(TAG, "stopAuthentication: no fingerprint HAL!");
             return ERROR_ESRCH;
         }
         try {
@@ -102,12 +102,12 @@
     @Override
     public boolean onEnrollResult(int fingerId, int groupId, int rem) {
         if (DEBUG) Slog.w(TAG, "onEnrollResult() called for enumerate!");
-        return true; // Invalid for Enumerate.
+        return true; // Invalid for Remove
     }
 
     @Override
     public boolean onRemoved(int fingerId, int groupId, int remaining) {
         if (DEBUG) Slog.w(TAG, "onRemoved() called for enumerate!");
-        return true; // Invalid for Enumerate.
+        return true; // Invalid for Authenticate
     }
 }
diff --git a/services/core/java/com/android/server/fingerprint/FingerprintService.java b/services/core/java/com/android/server/fingerprint/FingerprintService.java
index b6e7932..7d97ce4 100644
--- a/services/core/java/com/android/server/fingerprint/FingerprintService.java
+++ b/services/core/java/com/android/server/fingerprint/FingerprintService.java
@@ -85,7 +85,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.concurrent.CopyOnWriteArrayList;
-import java.util.LinkedList;
 
 /**
  * A service to manage multiple clients that want to access the fingerprint HAL API.
@@ -135,20 +134,6 @@
     private ClientMonitor mPendingClient;
     private PerformanceStats mPerformanceStats;
 
-
-    private IBinder mToken = new Binder(); // used for internal FingerprintService enumeration
-    private LinkedList<Integer> mEnumeratingUserIds = new LinkedList<>();
-    private ArrayList<UserFingerprint> mUnknownFingerprints = new ArrayList<>(); // hw finterprints
-
-    private class UserFingerprint {
-        Fingerprint f;
-        int userId;
-        public UserFingerprint(Fingerprint f, int userId) {
-            this.f = f;
-            this.userId = userId;
-        }
-    }
-
     // Normal fingerprint authentications are tracked by mPerformanceMap.
     private HashMap<Integer, PerformanceStats> mPerformanceMap = new HashMap<>();
 
@@ -272,12 +257,10 @@
         // This operation can be expensive, so keep track of the elapsed time. Might need to move to
         // background if it takes too long.
         long t = System.currentTimeMillis();
+
         mAuthenticatorIds.clear();
-        mEnumeratingUserIds.clear();
-        mUnknownFingerprints.clear();
         for (UserInfo user : UserManager.get(mContext).getUsers(true /* excludeDying */)) {
             int userId = getUserOrWorkProfileId(null, user.id);
-            mEnumeratingUserIds.add(userId);
             if (!mAuthenticatorIds.containsKey(userId)) {
                 updateActiveGroup(userId, null);
             }
@@ -287,70 +270,12 @@
         if (t > 1000) {
             Slog.w(TAG, "loadAuthenticatorIds() taking too long: " + t + "ms");
         }
-
-        if (!mEnumeratingUserIds.isEmpty()) {
-            enumerateNextUser();
-        }
-    }
-
-    private void enumerateNextUser() {
-        int nextUser = mEnumeratingUserIds.getFirst();
-        updateActiveGroup(nextUser, null);
-        boolean restricted = !hasPermission(MANAGE_FINGERPRINT);
-
-        if (DEBUG) Slog.v(TAG, "Enumerating user id " + nextUser + " of "
-                + mEnumeratingUserIds.size() + " remaining users");
-
-        startEnumerate(mToken, nextUser, null, restricted, true /* internal */);
-    }
-
-    // Remove unknown fingerprints from hardware
-    private void cleanupUnknownFingerprints() {
-        if (!mUnknownFingerprints.isEmpty()) {
-            Slog.w(TAG, "unknown fingerprint size: " + mUnknownFingerprints.size());
-            UserFingerprint uf = mUnknownFingerprints.get(0);
-            mUnknownFingerprints.remove(uf);
-            boolean restricted = !hasPermission(MANAGE_FINGERPRINT);
-            updateActiveGroup(uf.userId, null);
-            startRemove(mToken, uf.f.getFingerId(), uf.f.getGroupId(), uf.userId, null,
-                    restricted, true /* internal */);
-        }
     }
 
     protected void handleEnumerate(long deviceId, int fingerId, int groupId, int remaining) {
-        if (DEBUG) Slog.w(TAG, "Enumerate: fid=" + fingerId
-                + ", gid=" + groupId
-                + ", dev=" + deviceId
-                + ", rem=" + remaining);
-
-        ClientMonitor client = mCurrentClient;
-
-        if (client != null) {
-            client.onEnumerationResult(fingerId, groupId, remaining);
-        }
-
-        // All fingerprints in hardware for this user were enumerated
-        if (remaining == 0) {
-            mEnumeratingUserIds.poll();
-
-            if (client instanceof InternalEnumerateClient) {
-                List<Fingerprint> enrolled = ((InternalEnumerateClient) client).getEnumeratedList();
-                Slog.w(TAG, "Added " + enrolled.size() + " enumerated fingerprints for deletion");
-                for (Fingerprint f : enrolled) {
-                    mUnknownFingerprints.add(new UserFingerprint(f, client.getTargetUserId()));
-                }
-            }
-
-            removeClient(client);
-
-            if (!mEnumeratingUserIds.isEmpty()) {
-                enumerateNextUser();
-            } else if (client instanceof InternalEnumerateClient) {
-                if (DEBUG) Slog.v(TAG, "Finished enumerating all users");
-                // This will start a chain of InternalRemovalClients
-                cleanupUnknownFingerprints();
-            }
-        }
+        if (DEBUG) Slog.w(TAG, "Enumerate: fid=" + fingerId + ", gid="
+                + groupId + "rem=" + remaining);
+        // TODO: coordinate names with framework
     }
 
     protected void handleError(long deviceId, int error, int vendorCode) {
@@ -379,18 +304,10 @@
     }
 
     protected void handleRemoved(long deviceId, int fingerId, int groupId, int remaining) {
-        if (DEBUG) Slog.w(TAG, "Removed: fid=" + fingerId
-                + ", gid=" + groupId
-                + ", dev=" + deviceId
-                + ", rem=" + remaining);
-
         ClientMonitor client = mCurrentClient;
         if (client != null && client.onRemoved(fingerId, groupId, remaining)) {
             removeClient(client);
         }
-        if (client instanceof InternalRemovalClient && !mUnknownFingerprints.isEmpty()) {
-            cleanupUnknownFingerprints();
-        }
     }
 
     protected void handleAuthenticated(long deviceId, int fingerId, int groupId,
@@ -517,15 +434,7 @@
         ClientMonitor currentClient = mCurrentClient;
         if (currentClient != null) {
             if (DEBUG) Slog.v(TAG, "request stop current client " + currentClient.getOwnerString());
-            if (currentClient instanceof InternalEnumerateClient ||
-                    currentClient instanceof InternalRemovalClient) {
-                // This condition means we're currently running internal diagnostics to
-                // remove extra fingerprints in the hardware and/or the software
-                // TODO: design an escape hatch in case client never finishes
-            }
-            else {
-                currentClient.stop(initiatedByClient);
-            }
+            currentClient.stop(initiatedByClient);
             mPendingClient = newClient;
             mHandler.removeCallbacks(mResetClientState);
             mHandler.postDelayed(mResetClientState, CANCEL_TIMEOUT_LIMIT);
@@ -542,86 +451,47 @@
     }
 
     void startRemove(IBinder token, int fingerId, int groupId, int userId,
-            IFingerprintServiceReceiver receiver, boolean restricted, boolean internal) {
+            IFingerprintServiceReceiver receiver, boolean restricted) {
         IBiometricsFingerprint daemon = getFingerprintDaemon();
         if (daemon == null) {
             Slog.w(TAG, "startRemove: no fingerprint HAL!");
             return;
         }
+        RemovalClient client = new RemovalClient(getContext(), mHalDeviceId, token,
+                receiver, fingerId, groupId, userId, restricted, token.toString()) {
+            @Override
+            public void notifyUserActivity() {
+                FingerprintService.this.userActivity();
+            }
 
-        if (internal) {
-            Context context = getContext();
-            InternalRemovalClient client = new InternalRemovalClient(context, mHalDeviceId,
-                    token, receiver, fingerId, groupId, userId, restricted,
-                    context.getOpPackageName()) {
-                @Override
-                public void notifyUserActivity() {
-
-                }
-                @Override
-                public IBiometricsFingerprint getFingerprintDaemon() {
-                    return FingerprintService.this.getFingerprintDaemon();
-                }
-            };
-            startClient(client, true);
-        }
-        else {
-            RemovalClient client = new RemovalClient(getContext(), mHalDeviceId, token,
-                    receiver, fingerId, groupId, userId, restricted, token.toString()) {
-                @Override
-                public void notifyUserActivity() {
-                    FingerprintService.this.userActivity();
-                }
-
-                @Override
-                public IBiometricsFingerprint getFingerprintDaemon() {
-                    return FingerprintService.this.getFingerprintDaemon();
-                }
-            };
-            startClient(client, true);
-        }
+            @Override
+            public IBiometricsFingerprint getFingerprintDaemon() {
+                return FingerprintService.this.getFingerprintDaemon();
+            }
+        };
+        startClient(client, true);
     }
 
     void startEnumerate(IBinder token, int userId,
-        IFingerprintServiceReceiver receiver, boolean restricted, boolean internal) {
+        IFingerprintServiceReceiver receiver, boolean restricted) {
         IBiometricsFingerprint daemon = getFingerprintDaemon();
         if (daemon == null) {
             Slog.w(TAG, "startEnumerate: no fingerprint HAL!");
             return;
         }
-        if (internal) {
-            List<Fingerprint> enrolledList = getEnrolledFingerprints(userId);
-            Context context = getContext();
-            InternalEnumerateClient client = new InternalEnumerateClient(context, mHalDeviceId,
-                    token, receiver, userId, userId, restricted, context.getOpPackageName(),
-                    enrolledList) {
-                @Override
-                public void notifyUserActivity() {
+        EnumerateClient client = new EnumerateClient(getContext(), mHalDeviceId, token,
+            receiver, userId, userId, restricted, token.toString()) {
+            @Override
+            public void notifyUserActivity() {
+                FingerprintService.this.userActivity();
+            }
 
-                }
-
-                @Override
-                public IBiometricsFingerprint getFingerprintDaemon() {
-                    return FingerprintService.this.getFingerprintDaemon();
-                }
-            };
-            startClient(client, true);
-        }
-        else {
-            EnumerateClient client = new EnumerateClient(getContext(), mHalDeviceId, token,
-                    receiver, userId, userId, restricted, token.toString()) {
-                @Override
-                public void notifyUserActivity() {
-                    FingerprintService.this.userActivity();
-                }
-
-                @Override
-                public IBiometricsFingerprint getFingerprintDaemon() {
-                    return FingerprintService.this.getFingerprintDaemon();
-                }
-            };
-            startClient(client, true);
-        }
+            @Override
+            public IBiometricsFingerprint getFingerprintDaemon() {
+                return FingerprintService.this.getFingerprintDaemon();
+            }
+        };
+        startClient(client, true);
     }
 
     public List<Fingerprint> getEnrolledFingerprints(int userId) {
@@ -1108,14 +978,12 @@
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
-                    startRemove(token, fingerId, groupId, userId, receiver,
-                            restricted, false /* internal */);
+                    startRemove(token, fingerId, groupId, userId, receiver, restricted);
                 }
             });
 
         }
 
-        @Override // Binder call
         public void enumerate(final IBinder token, final int userId,
             final IFingerprintServiceReceiver receiver) {
             checkPermission(MANAGE_FINGERPRINT); // TODO: Maybe have another permission
@@ -1123,7 +991,7 @@
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
-                    startEnumerate(token, userId, receiver, restricted, false /* internal */);
+                    startEnumerate(token, userId, receiver, restricted);
                 }
             });
 
diff --git a/services/core/java/com/android/server/fingerprint/InternalEnumerateClient.java b/services/core/java/com/android/server/fingerprint/InternalEnumerateClient.java
deleted file mode 100644
index f4d2596..0000000
--- a/services/core/java/com/android/server/fingerprint/InternalEnumerateClient.java
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Copyright (C) 2017 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 com.android.server.fingerprint;
-
-import android.content.Context;
-import android.hardware.fingerprint.Fingerprint;
-import android.hardware.fingerprint.IFingerprintServiceReceiver;
-import android.os.IBinder;
-import android.util.Slog;
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * An internal class to help clean up unknown fingerprints in the hardware and software
- */
-public abstract class InternalEnumerateClient extends EnumerateClient {
-
-    private List<Fingerprint> mEnrolledList;
-    private List<Fingerprint> mEnumeratedList = new ArrayList<>(); // list of fp to delete
-
-    public InternalEnumerateClient(Context context, long halDeviceId, IBinder token,
-            IFingerprintServiceReceiver receiver, int groupId, int userId,
-            boolean restricted, String owner, List<Fingerprint> enrolledList) {
-
-        super(context, halDeviceId, token, receiver, userId, groupId, restricted, owner);
-        mEnrolledList = enrolledList;
-    }
-
-    private void handleEnumeratedFingerprint(int fingerId, int groupId, int remaining) {
-
-        boolean matched = false;
-        for (int i=0; i<mEnrolledList.size(); i++) {
-            if (mEnrolledList.get(i).getFingerId() == fingerId) {
-                mEnrolledList.remove(i);
-                matched = true;
-                Slog.e(TAG, "Matched fingerprint fid=" + fingerId);
-                break;
-            }
-        }
-
-        // fingerId 0 means no fingerprints are in hardware
-        if (!matched && fingerId != 0) {
-            Fingerprint fingerprint = new Fingerprint("", groupId, fingerId, getHalDeviceId());
-            mEnumeratedList.add(fingerprint);
-        }
-    }
-
-    private void doFingerprintCleanup() {
-
-        if (mEnrolledList == null) {
-            return;
-        }
-
-        for (Fingerprint f : mEnrolledList) {
-            Slog.e(TAG, "Internal Enumerate: Removing dangling enrolled fingerprint: "
-                    + f.getName() + " " + f.getFingerId() + " " + f.getGroupId()
-                    + " " + f.getDeviceId());
-
-            FingerprintUtils.getInstance().removeFingerprintIdForUser(getContext(),
-                    f.getFingerId(), getTargetUserId());
-        }
-        mEnrolledList.clear();
-    }
-
-    public List<Fingerprint> getEnumeratedList() {
-        return mEnumeratedList;
-    }
-
-    @Override
-    public boolean onEnumerationResult(int fingerId, int groupId, int remaining) {
-
-        handleEnumeratedFingerprint(fingerId, groupId, remaining);
-        if (remaining == 0) {
-            doFingerprintCleanup();
-        }
-
-        return fingerId == 0; // done when id hits 0
-    }
-
-}
diff --git a/services/core/java/com/android/server/fingerprint/InternalRemovalClient.java b/services/core/java/com/android/server/fingerprint/InternalRemovalClient.java
deleted file mode 100644
index 19f61fe..0000000
--- a/services/core/java/com/android/server/fingerprint/InternalRemovalClient.java
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2017 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 com.android.server.fingerprint;
-
-import android.content.Context;
-import android.os.IBinder;
-import android.hardware.fingerprint.IFingerprintServiceReceiver;
-import com.android.server.fingerprint.RemovalClient;
-
-public abstract class InternalRemovalClient extends RemovalClient {
-
-    public InternalRemovalClient(Context context, long halDeviceId, IBinder token,
-            IFingerprintServiceReceiver receiver, int fingerId, int groupId, int userId,
-            boolean restricted, String owner) {
-
-        super(context, halDeviceId, token, receiver, fingerId, groupId, userId, restricted, owner);
-
-    }
-}