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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.voicemail.impl.fetch;
import android.annotation.TargetApi;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Network;
import android.net.Uri;
import android.os.Build.VERSION_CODES;
import android.provider.VoicemailContract;
import android.provider.VoicemailContract.Voicemails;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.os.BuildCompat;
import android.telecom.PhoneAccountHandle;
import android.telecom.TelecomManager;
import android.telephony.TelephonyManager;
import android.text.TextUtils;
import com.android.voicemail.VoicemailComponent;
import com.android.voicemail.impl.VoicemailStatus;
import com.android.voicemail.impl.VvmLog;
import com.android.voicemail.impl.imap.ImapHelper;
import com.android.voicemail.impl.imap.ImapHelper.InitializingException;
import com.android.voicemail.impl.sync.VvmAccountManager;
import com.android.voicemail.impl.sync.VvmNetworkRequestCallback;
import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
/** handles {@link VoicemailContract#ACTION_FETCH_VOICEMAIL} */
@TargetApi(VERSION_CODES.O)
public class FetchVoicemailReceiver extends BroadcastReceiver {
private static final String TAG = "FetchVoicemailReceiver";
static final String[] PROJECTION =
new String[] {
Voicemails.SOURCE_DATA, // 0
Voicemails.PHONE_ACCOUNT_ID, // 1
Voicemails.PHONE_ACCOUNT_COMPONENT_NAME, // 2
};
public static final int SOURCE_DATA = 0;
public static final int PHONE_ACCOUNT_ID = 1;
public static final int PHONE_ACCOUNT_COMPONENT_NAME = 2;
// Number of retries
private static final int NETWORK_RETRY_COUNT = 3;
private ContentResolver contentResolver;
private Uri uri;
private VvmNetworkRequestCallback networkCallback;
private Context context;
private String uid;
private PhoneAccountHandle phoneAccount;
private int retryCount = NETWORK_RETRY_COUNT;
@Override
public void onReceive(final Context context, Intent intent) {
if (!VoicemailComponent.get(context).getVoicemailClient().isVoicemailModuleEnabled()) {
return;
}
if (VoicemailContract.ACTION_FETCH_VOICEMAIL.equals(intent.getAction())) {
VvmLog.i(TAG, "ACTION_FETCH_VOICEMAIL received");
this.context = context;
contentResolver = context.getContentResolver();
uri = intent.getData();
if (uri == null) {
VvmLog.w(TAG, VoicemailContract.ACTION_FETCH_VOICEMAIL + " intent sent with no data");
return;
}
if (!context
.getPackageName()
.equals(uri.getQueryParameter(VoicemailContract.PARAM_KEY_SOURCE_PACKAGE))) {
// Ignore if the fetch request is for a voicemail not from this package.
VvmLog.e(TAG, "ACTION_FETCH_VOICEMAIL from foreign pacakge " + context.getPackageName());
return;
}
Cursor cursor = contentResolver.query(uri, PROJECTION, null, null, null);
if (cursor == null) {
VvmLog.i(TAG, "ACTION_FETCH_VOICEMAIL query returned null");
return;
}
try {
if (cursor.moveToFirst()) {
uid = cursor.getString(SOURCE_DATA);
String accountId = cursor.getString(PHONE_ACCOUNT_ID);
if (TextUtils.isEmpty(accountId)) {
TelephonyManager telephonyManager =
(TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
accountId = telephonyManager.getSimSerialNumber();
if (TextUtils.isEmpty(accountId)) {
VvmLog.e(TAG, "Account null and no default sim found.");
return;
}
}
phoneAccount =
new PhoneAccountHandle(
ComponentName.unflattenFromString(cursor.getString(PHONE_ACCOUNT_COMPONENT_NAME)),
cursor.getString(PHONE_ACCOUNT_ID));
TelephonyManager telephonyManager =
context
.getSystemService(TelephonyManager.class)
.createForPhoneAccountHandle(phoneAccount);
if (telephonyManager == null) {
// can happen when trying to fetch voicemails from a SIM that is no longer on the
// device
VvmLog.e(TAG, "account no longer valid, cannot retrieve message");
return;
}
if (!VvmAccountManager.isAccountActivated(context, phoneAccount)) {
phoneAccount = getAccountFromMarshmallowAccount(context, phoneAccount);
if (phoneAccount == null) {
VvmLog.w(TAG, "Account not registered - cannot retrieve message.");
return;
}
VvmLog.i(TAG, "Fetching voicemail with Marshmallow PhoneAccountHandle");
}
VvmLog.i(TAG, "Requesting network to fetch voicemail");
networkCallback = new fetchVoicemailNetworkRequestCallback(context, phoneAccount);
networkCallback.requestNetwork();
}
} finally {
cursor.close();
}
}
}
/**
* In ag/930496 the format of PhoneAccountHandle has changed between Marshmallow and Nougat. This
* method attempts to search the account from the old database in registered sources using the old
* format. There's a chance of M phone account collisions on multi-SIM devices, but visual
* voicemail is not supported on M multi-SIM.
*/
@Nullable
private static PhoneAccountHandle getAccountFromMarshmallowAccount(
Context context, PhoneAccountHandle oldAccount) {
if (!BuildCompat.isAtLeastN()) {
return null;
}
for (PhoneAccountHandle handle :
context.getSystemService(TelecomManager.class).getCallCapablePhoneAccounts()) {
if (getIccSerialNumberFromFullIccSerialNumber(handle.getId()).equals(oldAccount.getId())) {
return handle;
}
}
return null;
}
/**
* getIccSerialNumber() is used for ID before N, and getFullIccSerialNumber() after.
* getIccSerialNumber() stops at the first hex char.
*/
@NonNull
private static String getIccSerialNumberFromFullIccSerialNumber(@NonNull String id) {
for (int i = 0; i < id.length(); i++) {
if (!Character.isDigit(id.charAt(i))) {
return id.substring(0, i);
}
}
return id;
}
private class fetchVoicemailNetworkRequestCallback extends VvmNetworkRequestCallback {
public fetchVoicemailNetworkRequestCallback(Context context, PhoneAccountHandle phoneAccount) {
super(context, phoneAccount, VoicemailStatus.edit(context, phoneAccount));
}
@Override
public void onAvailable(final Network network) {
super.onAvailable(network);
fetchVoicemail(network, getVoicemailStatusEditor());
}
}
private void fetchVoicemail(final Network network, final VoicemailStatus.Editor status) {
Executor executor = Executors.newCachedThreadPool();
executor.execute(
new Runnable() {
@Override
public void run() {
try {
while (retryCount > 0) {
VvmLog.i(TAG, "fetching voicemail, retry count=" + retryCount);
try (ImapHelper imapHelper =
new ImapHelper(context, phoneAccount, network, status)) {
boolean success =
imapHelper.fetchVoicemailPayload(
new VoicemailFetchedCallback(context, uri, phoneAccount), uid);
if (!success && retryCount > 0) {
VvmLog.i(TAG, "fetch voicemail failed, retrying");
retryCount--;
} else {
return;
}
} catch (InitializingException e) {
VvmLog.w(TAG, "Can't retrieve Imap credentials ", e);
return;
}
}
} finally {
if (networkCallback != null) {
networkCallback.releaseNetwork();
}
}
}
});
}
}
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