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 17 package com.android.carrierdefaultapp; 18 19 import android.app.job.JobInfo; 20 import android.app.job.JobParameters; 21 import android.app.job.JobScheduler; 22 import android.app.job.JobService; 23 import android.content.ComponentName; 24 import android.content.Context; 25 import android.content.Intent; 26 import android.net.ConnectivityManager; 27 import android.net.Network; 28 import android.net.NetworkCapabilities; 29 import android.provider.Settings; 30 import android.telephony.TelephonyManager; 31 import android.util.Log; 32 33 /** 34 * Service to run {@link android.app.job.JobScheduler} job. 35 * Service to monitor when there is a change to conent URI 36 * {@link android.provider.Settings.Global#DEVICE_PROVISIONED DEVICE_PROVISIONED} 37 */ 38 public class ProvisionObserver extends JobService { 39 40 private static final String TAG = ProvisionObserver.class.getSimpleName(); 41 public static final int PROVISION_OBSERVER_REEVALUATION_JOB_ID = 1; 42 // minimum & maximum update delay TBD 43 private static final int CONTENT_UPDATE_DELAY_MS = 100; 44 private static final int CONTENT_MAX_DELAY_MS = 200; 45 46 @Override onStartJob(JobParameters jobParameters)47 public boolean onStartJob(JobParameters jobParameters) { 48 switch (jobParameters.getJobId()) { 49 case PROVISION_OBSERVER_REEVALUATION_JOB_ID: 50 if (isProvisioned(this)) { 51 Log.d(TAG, "device provisioned, force network re-evaluation"); 52 final ConnectivityManager connMgr = getSystemService(ConnectivityManager.class); 53 Network[] info = connMgr.getAllNetworks(); 54 for (Network nw : info) { 55 final NetworkCapabilities nc = connMgr.getNetworkCapabilities(nw); 56 if (nc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) 57 && nc.hasCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)) { 58 // force connectivity re-evaluation to assume skipped carrier actions. 59 // one of the following calls will match the last evaluation. 60 connMgr.reportNetworkConnectivity(nw, true); 61 connMgr.reportNetworkConnectivity(nw, false); 62 break; 63 } 64 } 65 } 66 default: 67 break; 68 } 69 return false; 70 } 71 72 @Override onStopJob(JobParameters jobParameters)73 public boolean onStopJob(JobParameters jobParameters) { 74 return false; 75 } 76 77 // Returns true if the device is not provisioned yet (in setup wizard), false otherwise isProvisioned(Context context)78 private static boolean isProvisioned(Context context) { 79 return Settings.Global.getInt(context.getContentResolver(), 80 Settings.Global.DEVICE_PROVISIONED, 0) == 1; 81 } 82 83 /** 84 * Static utility function to schedule a job to execute upon the change of content URI 85 * {@link android.provider.Settings.Global#DEVICE_PROVISIONED DEVICE_PROVISIONED}. 86 * @param context The context used to retrieve the {@link ComponentName} and system services 87 * @return true carrier actions are deferred due to phone provisioning process, false otherwise 88 */ isDeferredForProvision(Context context, Intent intent)89 public static boolean isDeferredForProvision(Context context, Intent intent) { 90 if (isProvisioned(context)) { 91 return false; 92 } 93 int jobId; 94 switch(intent.getAction()) { 95 case TelephonyManager.ACTION_CARRIER_SIGNAL_REDIRECTED: 96 jobId = PROVISION_OBSERVER_REEVALUATION_JOB_ID; 97 break; 98 default: 99 return false; 100 } 101 final JobScheduler jobScheduler = (JobScheduler) context.getSystemService( 102 Context.JOB_SCHEDULER_SERVICE); 103 final JobInfo job = new JobInfo.Builder(jobId, 104 new ComponentName(context, ProvisionObserver.class)) 105 .addTriggerContentUri(new JobInfo.TriggerContentUri( 106 Settings.Global.getUriFor(Settings.Global.DEVICE_PROVISIONED), 0)) 107 .setTriggerContentUpdateDelay(CONTENT_UPDATE_DELAY_MS) 108 .setTriggerContentMaxDelay(CONTENT_MAX_DELAY_MS) 109 .build(); 110 jobScheduler.schedule(job); 111 return true; 112 } 113 } 114