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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 package com.example.android.autofill.service.datasource;
     17 
     18 import android.content.Context;
     19 
     20 public interface PackageVerificationDataSource {
     21 
     22     /**
     23      * Verifies that the signatures in the passed {@code Context} match what is currently in
     24      * storage. If there are no current signatures in storage for this packageName, it will store
     25      * the signatures from the passed {@code Context}.
     26      *
     27      * @return {@code true} if signatures for this packageName are not currently in storage
     28      * or if the signatures in the passed {@code Context} match what is currently in storage;
     29      * {@code false} if the signatures in the passed {@code Context} do not match what is
     30      * currently in storage or if an {@code Exception} was thrown while generating the signatures.
     31      */
     32     boolean putPackageSignatures(Context context, String packageName);
     33 
     34     /**
     35      * Clears all signature data currently in storage.
     36      */
     37     void clear(Context context);
     38 }
     39