1 /**
2  * Copyright (C) 2017 The Android Open Source Project
3  *
4  * <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
5  * except in compliance with the License. You may obtain a copy of the License at
6  *
7  * <p>http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * <p>Unless required by applicable law or agreed to in writing, software distributed under the
10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
11  * express or implied. See the License for the specific language governing permissions and
12  * limitations under the License
13  */
14 package com.android.voicemail.impl;
15 
16 import android.annotation.TargetApi;
17 import android.content.Context;
18 import android.content.Intent;
19 import android.os.Build.VERSION_CODES;
20 import android.os.Bundle;
21 import android.telecom.PhoneAccountHandle;
22 import android.telephony.ServiceState;
23 import android.telephony.TelephonyManager;
24 import com.android.dialer.logging.DialerImpression;
25 import com.android.dialer.proguard.UsedByReflection;
26 import com.android.voicemail.impl.scheduling.BaseTask;
27 import com.android.voicemail.impl.sms.StatusMessage;
28 import com.android.voicemail.impl.sms.StatusSmsFetcher;
29 import com.android.voicemail.impl.sync.VvmAccountManager;
30 import com.android.voicemail.impl.utils.LoggerUtils;
31 import java.io.IOException;
32 import java.util.concurrent.CancellationException;
33 import java.util.concurrent.ExecutionException;
34 import java.util.concurrent.TimeoutException;
35 
36 /**
37  * Task to verify the account status is still correct. This task is only for book keeping so any
38  * error is ignored and will not retry. If the provision status sent by the carrier is "ready" the
39  * access credentials will be updated (although it is not expected to change without the carrier
40  * actively sending out an STATUS SMS which will be handled by {@link
41  * com.android.voicemail.impl.sms.OmtpMessageReceiver}). If the provisioning status is not ready an
42  * {@link ActivationTask} will be launched to attempt to correct it.
43  */
44 @TargetApi(VERSION_CODES.O)
45 @UsedByReflection(value = "Tasks.java")
46 public class StatusCheckTask extends BaseTask {
47 
StatusCheckTask()48   public StatusCheckTask() {
49     super(TASK_STATUS_CHECK);
50   }
51 
start(Context context, PhoneAccountHandle phoneAccountHandle)52   public static void start(Context context, PhoneAccountHandle phoneAccountHandle) {
53     Intent intent = BaseTask.createIntent(context, StatusCheckTask.class, phoneAccountHandle);
54     context.sendBroadcast(intent);
55   }
56 
57   @Override
onExecuteInBackgroundThread()58   public void onExecuteInBackgroundThread() {
59     TelephonyManager telephonyManager =
60         getContext()
61             .getSystemService(TelephonyManager.class)
62             .createForPhoneAccountHandle(getPhoneAccountHandle());
63 
64     if (telephonyManager == null) {
65       VvmLog.w(
66           "StatusCheckTask.onExecuteInBackgroundThread",
67           getPhoneAccountHandle() + " no longer valid");
68       return;
69     }
70     if (telephonyManager.getServiceState().getState() != ServiceState.STATE_IN_SERVICE) {
71       VvmLog.i(
72           "StatusCheckTask.onExecuteInBackgroundThread",
73           getPhoneAccountHandle() + " not in service");
74       return;
75     }
76     OmtpVvmCarrierConfigHelper config =
77         new OmtpVvmCarrierConfigHelper(getContext(), getPhoneAccountHandle());
78     if (!config.isValid()) {
79       VvmLog.e(
80           "StatusCheckTask.onExecuteInBackgroundThread",
81           "config no longer valid for " + getPhoneAccountHandle());
82       VvmAccountManager.removeAccount(getContext(), getPhoneAccountHandle());
83       return;
84     }
85 
86     Bundle data;
87     try (StatusSmsFetcher fetcher = new StatusSmsFetcher(getContext(), getPhoneAccountHandle())) {
88       config.getProtocol().requestStatus(config, fetcher.getSentIntent());
89       // Both the fetcher and OmtpMessageReceiver will be triggered, but
90       // OmtpMessageReceiver will just route the SMS back to ActivationTask, which will be
91       // rejected because the task is still running.
92       data = fetcher.get();
93     } catch (TimeoutException e) {
94       VvmLog.e("StatusCheckTask.onExecuteInBackgroundThread", "timeout requesting status");
95       return;
96     } catch (CancellationException e) {
97       VvmLog.e("StatusCheckTask.onExecuteInBackgroundThread", "Unable to send status request SMS");
98       return;
99     } catch (InterruptedException | ExecutionException | IOException e) {
100       VvmLog.e("StatusCheckTask.onExecuteInBackgroundThread", "can't get future STATUS SMS", e);
101       return;
102     }
103 
104     StatusMessage message = new StatusMessage(data);
105     VvmLog.i(
106         "StatusCheckTask.onExecuteInBackgroundThread",
107         "STATUS SMS received: st="
108             + message.getProvisioningStatus()
109             + ", rc="
110             + message.getReturnCode());
111     if (message.getProvisioningStatus().equals(OmtpConstants.SUBSCRIBER_READY)) {
112       VvmLog.i(
113           "StatusCheckTask.onExecuteInBackgroundThread",
114           "subscriber ready, no activation required");
115       LoggerUtils.logImpressionOnMainThread(
116           getContext(), DialerImpression.Type.VVM_STATUS_CHECK_READY);
117       VvmAccountManager.addAccount(getContext(), getPhoneAccountHandle(), message);
118     } else {
119       VvmLog.i(
120           "StatusCheckTask.onExecuteInBackgroundThread",
121           "subscriber not ready, attempting reactivation");
122       VvmAccountManager.removeAccount(getContext(), getPhoneAccountHandle());
123       LoggerUtils.logImpressionOnMainThread(
124           getContext(), DialerImpression.Type.VVM_STATUS_CHECK_REACTIVATION);
125       ActivationTask.start(getContext(), getPhoneAccountHandle(), data);
126     }
127   }
128 }
129