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      1 /*
      2  * Copyright (C) 2012 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 android.content.pm;
     18 
     19 import android.os.IBinder;
     20 import android.os.Parcel;
     21 import android.os.Parcelable;
     22 
     23 /**
     24  * Represents a {@code KeySet} that has been declared in the AndroidManifest.xml
     25  * file for the application.  A {@code KeySet} can be used explicitly to
     26  * represent a trust relationship with other applications on the device.
     27  * @hide
     28  */
     29 public class KeySet implements Parcelable {
     30 
     31     private IBinder token;
     32 
     33     /** @hide */
     34     public KeySet(IBinder token) {
     35         if (token == null) {
     36             throw new NullPointerException("null value for KeySet IBinder token");
     37         }
     38         this.token = token;
     39     }
     40 
     41     /** @hide */
     42     public IBinder getToken() {
     43         return token;
     44     }
     45 
     46     /** @hide */
     47     @Override
     48     public boolean equals(Object o) {
     49         if (o instanceof KeySet) {
     50             KeySet ks = (KeySet) o;
     51             return token == ks.token;
     52         }
     53         return false;
     54     }
     55 
     56     /** @hide */
     57     @Override
     58     public int hashCode() {
     59         return token.hashCode();
     60     }
     61 
     62     /**
     63      * Implement Parcelable
     64      * @hide
     65      */
     66     public static final Parcelable.Creator<KeySet> CREATOR
     67             = new Parcelable.Creator<KeySet>() {
     68 
     69         /**
     70          * Create a KeySet from a Parcel
     71          *
     72          * @param in The parcel containing the KeySet
     73          */
     74         public KeySet createFromParcel(Parcel source) {
     75             return readFromParcel(source);
     76         }
     77 
     78         /**
     79          * Create an array of null KeySets
     80          */
     81         public KeySet[] newArray(int size) {
     82             return new KeySet[size];
     83         }
     84     };
     85 
     86     /**
     87      * @hide
     88      */
     89     private static KeySet readFromParcel(Parcel in) {
     90         IBinder token = in.readStrongBinder();
     91         return new KeySet(token);
     92     }
     93 
     94     /**
     95      * @hide
     96      */
     97     @Override
     98     public void writeToParcel(Parcel out, int flags) {
     99         out.writeStrongBinder(token);
    100     }
    101 
    102     /**
    103      * @hide
    104      */
    105     @Override
    106     public int describeContents() {
    107         return 0;
    108     }
    109 }