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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.updates;
     18 
     19 import com.android.timezone.distro.TimeZoneDistro;
     20 import com.android.timezone.distro.installer.TimeZoneDistroInstaller;
     21 
     22 import android.util.Slog;
     23 
     24 import java.io.File;
     25 import java.io.IOException;
     26 
     27 /**
     28  * An install receiver responsible for installing timezone data updates.
     29  */
     30 public class TzDataInstallReceiver extends ConfigUpdateInstallReceiver {
     31 
     32     private static final String TAG = "TZDataInstallReceiver";
     33 
     34     private static final File SYSTEM_TZ_DATA_FILE = new File("/system/usr/share/zoneinfo/tzdata");
     35     private static final File TZ_DATA_DIR = new File("/data/misc/zoneinfo");
     36     private static final String UPDATE_DIR_NAME = TZ_DATA_DIR.getPath() + "/updates/";
     37     private static final String UPDATE_METADATA_DIR_NAME = "metadata/";
     38     private static final String UPDATE_VERSION_FILE_NAME = "version";
     39     private static final String UPDATE_CONTENT_FILE_NAME = "tzdata_distro.zip";
     40 
     41     private final TimeZoneDistroInstaller installer;
     42 
     43     public TzDataInstallReceiver() {
     44         super(UPDATE_DIR_NAME, UPDATE_CONTENT_FILE_NAME, UPDATE_METADATA_DIR_NAME,
     45                 UPDATE_VERSION_FILE_NAME);
     46         installer = new TimeZoneDistroInstaller(TAG, SYSTEM_TZ_DATA_FILE, TZ_DATA_DIR);
     47     }
     48 
     49     @Override
     50     protected void install(byte[] content, int version) throws IOException {
     51         TimeZoneDistro distro = new TimeZoneDistro(content);
     52         boolean valid = installer.install(distro);
     53         Slog.i(TAG, "Timezone data install valid for this device: " + valid);
     54         // Even if !valid, we call super.install(). Only in the event of an exception should we
     55         // not. If we didn't do this we could attempt to install repeatedly.
     56         super.install(content, version);
     57     }
     58 }
     59