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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.dialer.filterednumber;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.provider.ContactsContract.Contacts;
import android.provider.Settings;
import android.telephony.PhoneNumberUtils;
import android.text.TextUtils;
import android.widget.Toast;
import com.android.contacts.common.testing.NeededForTesting;
import com.android.dialer.R;
import com.android.dialer.database.FilteredNumberAsyncQueryHandler;
import com.android.dialer.database.FilteredNumberAsyncQueryHandler.OnHasBlockedNumbersListener;
import com.android.dialer.database.FilteredNumberContract.FilteredNumber;
import com.android.dialer.database.FilteredNumberContract.FilteredNumberColumns;
import com.android.dialer.logging.InteractionEvent;
import com.android.dialer.logging.Logger;
import java.util.concurrent.TimeUnit;
/**
* Utility to help with tasks related to filtered numbers.
*/
public class FilteredNumbersUtil {
// Disable incoming call blocking if there was a call within the past 2 days.
private static final long RECENT_EMERGENCY_CALL_THRESHOLD_MS = 1000 * 60 * 60 * 24 * 2;
// Pref key for storing the time of end of the last emergency call in milliseconds after epoch.
protected static final String LAST_EMERGENCY_CALL_MS_PREF_KEY = "last_emergency_call_ms";
// Pref key for storing whether a notification has been dispatched to notify the user that call
// blocking has been disabled because of a recent emergency call.
protected static final String NOTIFIED_CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_PREF_KEY =
"notified_call_blocking_disabled_by_emergency_call";
public static final String CALL_BLOCKING_NOTIFICATION_TAG = "call_blocking";
public static final int CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_NOTIFICATION_ID = 10;
/**
* Used for testing to specify that a custom threshold should be used instead of the default.
* This custom threshold will only be used when setting this log tag to VERBOSE:
*
* adb shell setprop log.tag.DebugEmergencyCall VERBOSE
*
*/
@NeededForTesting
private static final String DEBUG_EMERGENCY_CALL_TAG = "DebugEmergencyCall";
/**
* Used for testing to specify the custom threshold value, in milliseconds for whether an
* emergency call is "recent". The default value will be used if this custom threshold is less
* than zero. For example, to set this threshold to 60 seconds:
*
* adb shell settings put system dialer_emergency_call_threshold_ms 60000
*
*/
@NeededForTesting
private static final String RECENT_EMERGENCY_CALL_THRESHOLD_SETTINGS_KEY =
"dialer_emergency_call_threshold_ms";
public interface CheckForSendToVoicemailContactListener {
public void onComplete(boolean hasSendToVoicemailContact);
}
public interface ImportSendToVoicemailContactsListener {
public void onImportComplete();
}
private static class ContactsQuery {
static final String[] PROJECTION = {
Contacts._ID
};
static final String SELECT_SEND_TO_VOICEMAIL_TRUE = Contacts.SEND_TO_VOICEMAIL + "=1";
static final int ID_COLUMN_INDEX = 0;
}
public static class PhoneQuery {
static final String[] PROJECTION = {
Contacts._ID,
Phone.NORMALIZED_NUMBER,
Phone.NUMBER
};
static final int ID_COLUMN_INDEX = 0;
static final int NORMALIZED_NUMBER_COLUMN_INDEX = 1;
static final int NUMBER_COLUMN_INDEX = 2;
static final String SELECT_SEND_TO_VOICEMAIL_TRUE = Contacts.SEND_TO_VOICEMAIL + "=1";
}
/**
* Checks if there exists a contact with {@code Contacts.SEND_TO_VOICEMAIL} set to true.
*/
public static void checkForSendToVoicemailContact(
final Context context, final CheckForSendToVoicemailContactListener listener) {
final AsyncTask task = new AsyncTask<Object, Void, Boolean>() {
@Override
public Boolean doInBackground(Object[] params) {
if (context == null) {
return false;
}
final Cursor cursor = context.getContentResolver().query(
Contacts.CONTENT_URI,
ContactsQuery.PROJECTION,
ContactsQuery.SELECT_SEND_TO_VOICEMAIL_TRUE,
null,
null);
boolean hasSendToVoicemailContacts = false;
if (cursor != null) {
try {
hasSendToVoicemailContacts = cursor.getCount() > 0;
} finally {
cursor.close();
}
}
return hasSendToVoicemailContacts;
}
@Override
public void onPostExecute(Boolean hasSendToVoicemailContact) {
if (listener != null) {
listener.onComplete(hasSendToVoicemailContact);
}
}
};
task.execute();
}
/**
* Blocks all the phone numbers of any contacts marked as SEND_TO_VOICEMAIL, then clears the
* SEND_TO_VOICEMAIL flag on those contacts.
*/
public static void importSendToVoicemailContacts(
final Context context, final ImportSendToVoicemailContactsListener listener) {
Logger.logInteraction(InteractionEvent.IMPORT_SEND_TO_VOICEMAIL);
final FilteredNumberAsyncQueryHandler mFilteredNumberAsyncQueryHandler =
new FilteredNumberAsyncQueryHandler(context.getContentResolver());
final AsyncTask<Object, Void, Boolean> task = new AsyncTask<Object, Void, Boolean>() {
@Override
public Boolean doInBackground(Object[] params) {
if (context == null) {
return false;
}
// Get the phone number of contacts marked as SEND_TO_VOICEMAIL.
final Cursor phoneCursor = context.getContentResolver().query(
Phone.CONTENT_URI,
PhoneQuery.PROJECTION,
PhoneQuery.SELECT_SEND_TO_VOICEMAIL_TRUE,
null,
null);
if (phoneCursor == null) {
return false;
}
try {
while (phoneCursor.moveToNext()) {
final String normalizedNumber = phoneCursor.getString(
PhoneQuery.NORMALIZED_NUMBER_COLUMN_INDEX);
final String number = phoneCursor.getString(
PhoneQuery.NUMBER_COLUMN_INDEX);
if (normalizedNumber != null) {
// Block the phone number of the contact.
mFilteredNumberAsyncQueryHandler.blockNumber(
null, normalizedNumber, number, null);
}
}
} finally {
phoneCursor.close();
}
// Clear SEND_TO_VOICEMAIL on all contacts. The setting has been imported to Dialer.
ContentValues newValues = new ContentValues();
newValues.put(Contacts.SEND_TO_VOICEMAIL, 0);
context.getContentResolver().update(
Contacts.CONTENT_URI,
newValues,
ContactsQuery.SELECT_SEND_TO_VOICEMAIL_TRUE,
null);
return true;
}
@Override
public void onPostExecute(Boolean success) {
if (success) {
if (listener != null) {
listener.onImportComplete();
}
} else if (context != null) {
String toastStr = context.getString(R.string.send_to_voicemail_import_failed);
Toast.makeText(context, toastStr, Toast.LENGTH_SHORT).show();
}
}
};
task.execute();
}
/**
* WARNING: This method should NOT be executed on the UI thread.
* Use {@code FilteredNumberAsyncQueryHandler} to asynchronously check if a number is blocked.
*/
public static boolean shouldBlockVoicemail(
Context context, String number, String countryIso, long voicemailDateMs) {
final String normalizedNumber = PhoneNumberUtils.formatNumberToE164(number, countryIso);
if (TextUtils.isEmpty(normalizedNumber)) {
return false;
}
if (hasRecentEmergencyCall(context)) {
return false;
}
final Cursor cursor = context.getContentResolver().query(
FilteredNumber.CONTENT_URI,
new String[] {
FilteredNumberColumns.CREATION_TIME
},
FilteredNumberColumns.NORMALIZED_NUMBER + "=?",
new String[] { normalizedNumber },
null);
if (cursor == null) {
return false;
}
try {
/*
* Block if number is found and it was added before this voicemail was received.
* The VVM's date is reported with precision to the minute, even though its
* magnitude is in milliseconds, so we perform the comparison in minutes.
*/
return cursor.moveToFirst() &&
TimeUnit.MINUTES.convert(voicemailDateMs, TimeUnit.MILLISECONDS) >=
TimeUnit.MINUTES.convert(cursor.getLong(0), TimeUnit.MILLISECONDS);
} finally {
cursor.close();
}
}
public static boolean hasRecentEmergencyCall(Context context) {
if (context == null) {
return false;
}
Long lastEmergencyCallTime = PreferenceManager.getDefaultSharedPreferences(context)
.getLong(LAST_EMERGENCY_CALL_MS_PREF_KEY, 0);
if (lastEmergencyCallTime == 0) {
return false;
}
return (System.currentTimeMillis() - lastEmergencyCallTime)
< getRecentEmergencyCallThresholdMs(context);
}
public static void recordLastEmergencyCallTime(Context context) {
if (context == null) {
return;
}
PreferenceManager.getDefaultSharedPreferences(context)
.edit()
.putLong(LAST_EMERGENCY_CALL_MS_PREF_KEY, System.currentTimeMillis())
.putBoolean(NOTIFIED_CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_PREF_KEY, false)
.apply();
maybeNotifyCallBlockingDisabled(context);
}
public static void maybeNotifyCallBlockingDisabled(final Context context) {
// Skip if the user has already received a notification for the most recent emergency call.
if (PreferenceManager.getDefaultSharedPreferences(context)
.getBoolean(NOTIFIED_CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_PREF_KEY, false)) {
return;
}
// If the user has blocked numbers, notify that call blocking is temporarily disabled.
FilteredNumberAsyncQueryHandler queryHandler =
new FilteredNumberAsyncQueryHandler(context.getContentResolver());
queryHandler.hasBlockedNumbers(new OnHasBlockedNumbersListener() {
@Override
public void onHasBlockedNumbers(boolean hasBlockedNumbers) {
if (context == null || !hasBlockedNumbers) {
return;
}
NotificationManager notificationManager = (NotificationManager)
context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(context)
.setSmallIcon(R.drawable.ic_block_24dp)
.setContentTitle(context.getString(
R.string.call_blocking_disabled_notification_title))
.setContentText(context.getString(
R.string.call_blocking_disabled_notification_text))
.setAutoCancel(true);
final Intent contentIntent =
new Intent(context, BlockedNumbersSettingsActivity.class);
builder.setContentIntent(PendingIntent.getActivity(
context, 0, contentIntent, PendingIntent.FLAG_UPDATE_CURRENT));
notificationManager.notify(
CALL_BLOCKING_NOTIFICATION_TAG,
CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_NOTIFICATION_ID,
builder.build());
// Record that the user has been notified for this emergency call.
PreferenceManager.getDefaultSharedPreferences(context)
.edit()
.putBoolean(NOTIFIED_CALL_BLOCKING_DISABLED_BY_EMERGENCY_CALL_PREF_KEY, true)
.apply();
}
});
}
public static boolean canBlockNumber(Context context, String number, String countryIso) {
final String normalizedNumber = PhoneNumberUtils.formatNumberToE164(number, countryIso);
return !TextUtils.isEmpty(normalizedNumber)
&& !PhoneNumberUtils.isEmergencyNumber(normalizedNumber);
}
private static long getRecentEmergencyCallThresholdMs(Context context) {
if (android.util.Log.isLoggable(
DEBUG_EMERGENCY_CALL_TAG, android.util.Log.VERBOSE)) {
long thresholdMs = Settings.System.getLong(
context.getContentResolver(),
RECENT_EMERGENCY_CALL_THRESHOLD_SETTINGS_KEY, 0);
return thresholdMs > 0 ? thresholdMs : RECENT_EMERGENCY_CALL_THRESHOLD_MS;
} else {
return RECENT_EMERGENCY_CALL_THRESHOLD_MS;
}
}
}
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