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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.sync;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build.VERSION_CODES;
import android.os.UserManager;
import android.support.annotation.MainThread;
import android.support.annotation.NonNull;
import android.support.annotation.VisibleForTesting;
import android.telecom.PhoneAccountHandle;
import android.telecom.TelecomManager;
import android.util.ArraySet;
import com.android.dialer.common.Assert;
import com.android.dialer.common.PerAccountSharedPreferences;
import com.android.dialer.common.concurrent.ThreadUtil;
import com.android.dialer.util.DialerUtils;
import com.android.voicemail.impl.OmtpConstants;
import com.android.voicemail.impl.VisualVoicemailPreferences;
import com.android.voicemail.impl.VoicemailStatus;
import com.android.voicemail.impl.sms.StatusMessage;
import java.util.ArrayList;
import java.util.List;
import java.util.Set;
/**
* Tracks the activation state of a visual voicemail phone account. An account is considered
* activated if it has valid connection information from the {@link StatusMessage} stored on the
* device. Once activation/provisioning is completed, {@link #addAccount(Context,
* PhoneAccountHandle, StatusMessage)} should be called to store the connection information. When an
* account is removed or if the connection information is deemed invalid, {@link
* #removeAccount(Context, PhoneAccountHandle)} should be called to clear the connection information
* and allow reactivation.
*/
@TargetApi(VERSION_CODES.O)
public class VvmAccountManager {
public static final String TAG = "VvmAccountManager";
/** Listener for activation state changes. Will be called on the main thread. */
public interface Listener {
@MainThread
void onActivationStateChanged(PhoneAccountHandle phoneAccountHandle, boolean isActivated);
}
@VisibleForTesting static final String IS_ACCOUNT_ACTIVATED = "is_account_activated";
private static Set<Listener> listeners = new ArraySet<>();
public static void addAccount(
Context context, PhoneAccountHandle phoneAccountHandle, StatusMessage statusMessage) {
VisualVoicemailPreferences preferences =
new VisualVoicemailPreferences(context, phoneAccountHandle);
statusMessage.putStatus(preferences.edit()).apply();
setAccountActivated(context, phoneAccountHandle, true);
ThreadUtil.postOnUiThread(
() -> {
for (Listener listener : listeners) {
listener.onActivationStateChanged(phoneAccountHandle, true);
}
});
}
public static void removeAccount(Context context, PhoneAccountHandle phoneAccount) {
VoicemailStatus.disable(context, phoneAccount);
setAccountActivated(context, phoneAccount, false);
VisualVoicemailPreferences preferences = new VisualVoicemailPreferences(context, phoneAccount);
preferences
.edit()
.putString(OmtpConstants.IMAP_USER_NAME, null)
.putString(OmtpConstants.IMAP_PASSWORD, null)
.apply();
ThreadUtil.postOnUiThread(
() -> {
for (Listener listener : listeners) {
listener.onActivationStateChanged(phoneAccount, false);
}
});
}
public static boolean isAccountActivated(Context context, PhoneAccountHandle phoneAccount) {
Assert.isNotNull(phoneAccount);
PerAccountSharedPreferences preferences =
getPreferenceForActivationState(context, phoneAccount);
migrateActivationState(context, preferences, phoneAccount);
return preferences.getBoolean(IS_ACCOUNT_ACTIVATED, false);
}
@NonNull
public static List<PhoneAccountHandle> getActiveAccounts(Context context) {
List<PhoneAccountHandle> results = new ArrayList<>();
for (PhoneAccountHandle phoneAccountHandle :
context.getSystemService(TelecomManager.class).getCallCapablePhoneAccounts()) {
if (isAccountActivated(context, phoneAccountHandle)) {
results.add(phoneAccountHandle);
}
}
return results;
}
@MainThread
public static void addListener(Listener listener) {
Assert.isMainThread();
listeners.add(listener);
}
@MainThread
public static void removeListener(Listener listener) {
Assert.isMainThread();
listeners.remove(listener);
}
/**
* The activation state is moved from credential protected storage to device protected storage
* after v10, so it can be checked under FBE. The state should be migrated to avoid reactivation.
*/
private static void migrateActivationState(
Context context,
PerAccountSharedPreferences deviceProtectedPreference,
PhoneAccountHandle phoneAccountHandle) {
if (!context.getSystemService(UserManager.class).isUserUnlocked()) {
return;
}
if (deviceProtectedPreference.contains(IS_ACCOUNT_ACTIVATED)) {
return;
}
PerAccountSharedPreferences credentialProtectedPreference =
new VisualVoicemailPreferences(context, phoneAccountHandle);
deviceProtectedPreference
.edit()
.putBoolean(
IS_ACCOUNT_ACTIVATED,
credentialProtectedPreference.getBoolean(IS_ACCOUNT_ACTIVATED, false))
.apply();
}
private static void setAccountActivated(
Context context, PhoneAccountHandle phoneAccountHandle, boolean activated) {
Assert.isNotNull(phoneAccountHandle);
getPreferenceForActivationState(context, phoneAccountHandle)
.edit()
.putBoolean(IS_ACCOUNT_ACTIVATED, activated)
.apply();
}
private static PerAccountSharedPreferences getPreferenceForActivationState(
Context context, PhoneAccountHandle phoneAccountHandle) {
return new PerAccountSharedPreferences(
context,
phoneAccountHandle,
DialerUtils.getDefaultSharedPreferenceForDeviceProtectedStorageContext(context));
}
}
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