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      1 /*
      2  * Copyright (C) 2015 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 
     17 package com.android.server.pm;
     18 
     19 import android.util.ArraySet;
     20 import android.util.LongSparseArray;
     21 
     22 import java.lang.reflect.Field;
     23 import java.security.PublicKey;
     24 
     25 public class KeySetUtils {
     26 
     27     public static PublicKey getPubKey(KeySetManagerService ksms, long pkId)
     28             throws NoSuchFieldException, IllegalAccessException {
     29         Field pkField = ksms.getClass().getDeclaredField("mPublicKeys");
     30         pkField.setAccessible(true);
     31         LongSparseArray<KeySetManagerService.PublicKeyHandle> mPublicKeys =
     32             (LongSparseArray<KeySetManagerService.PublicKeyHandle>) pkField.get(ksms);
     33         KeySetManagerService.PublicKeyHandle pkh = mPublicKeys.get(pkId);
     34         if (pkh == null) {
     35             return null;
     36         } else {
     37             return pkh.getKey();
     38         }
     39     }
     40 
     41     public static int getPubKeyRefCount(KeySetManagerService ksms, long pkId)
     42             throws NoSuchFieldException, IllegalAccessException {
     43         Field pkField = ksms.getClass().getDeclaredField("mPublicKeys");
     44         pkField.setAccessible(true);
     45         LongSparseArray<KeySetManagerService.PublicKeyHandle> mPublicKeys =
     46             (LongSparseArray<KeySetManagerService.PublicKeyHandle>) pkField.get(ksms);
     47         KeySetManagerService.PublicKeyHandle pkh = mPublicKeys.get(pkId);
     48         if (pkh == null) {
     49             return 0;
     50         } else {
     51             return pkh.getRefCountLPr();
     52         }
     53     }
     54 
     55     public static int getKeySetRefCount(KeySetManagerService ksms, long keysetId)
     56             throws NoSuchFieldException, IllegalAccessException {
     57         Field ksField = ksms.getClass().getDeclaredField("mKeySets");
     58         ksField.setAccessible(true);
     59         LongSparseArray<KeySetHandle> mKeySets =
     60             (LongSparseArray<KeySetHandle>) ksField.get(ksms);
     61         KeySetHandle ksh = mKeySets.get(keysetId);
     62         if (ksh == null) {
     63             return 0;
     64         } else {
     65             return ksh.getRefCountLPr();
     66         }
     67     }
     68 
     69     public static LongSparseArray<ArraySet<Long>> getKeySetMapping(KeySetManagerService ksms)
     70             throws NoSuchFieldException, IllegalAccessException {
     71         Field ksField = ksms.getClass().getDeclaredField("mKeySetMapping");
     72         ksField.setAccessible(true);
     73         return (LongSparseArray<ArraySet<Long>>) ksField.get(ksms);
     74     }
     75 
     76     public static Long getLastIssuedKeyId(KeySetManagerService ksms)
     77             throws NoSuchFieldException, IllegalAccessException {
     78         Field ksField = ksms.getClass().getDeclaredField("lastIssuedKeyId");
     79         ksField.setAccessible(true);
     80         return (Long) ksField.get(ksms);
     81     }
     82 
     83     public static Long getLastIssuedKeySetId(KeySetManagerService ksms)
     84             throws NoSuchFieldException, IllegalAccessException {
     85         Field ksField = ksms.getClass().getDeclaredField("lastIssuedKeySetId");
     86         ksField.setAccessible(true);
     87         return (Long) ksField.get(ksms);
     88     }
     89 }
     90