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/*
* Copyright (C) 2018 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.blocking;
import android.content.ContentProviderOperation;
import android.content.ContentProviderResult;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.OperationApplicationException;
import android.database.Cursor;
import android.os.RemoteException;
import android.provider.BlockedNumberContract;
import android.provider.BlockedNumberContract.BlockedNumbers;
import android.support.annotation.Nullable;
import android.telephony.PhoneNumberUtils;
import android.util.ArrayMap;
import com.android.dialer.common.concurrent.DialerExecutorComponent;
import com.android.dialer.common.database.Selection;
import com.google.common.collect.ImmutableCollection;
import com.google.common.collect.ImmutableMap;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/** Blocks and unblocks number. */
public final class Blocking {
private Blocking() {}
/**
* Thrown when blocking cannot be performed because dialer is not the default dialer, or the
* current user is not a primary user.
*
* <p>Blocking is only allowed on the primary user (the first user added). Primary user cannot be
* easily checked because {@link
* android.provider.BlockedNumberContract#canCurrentUserBlockNumbers(Context)} is a slow IPC, and
* UserManager.isPrimaryUser() is a system API. Since secondary users are rare cases this class
* choose to ignore the check and let callers handle the failure later.
*/
public static final class BlockingFailedException extends Exception {
BlockingFailedException(Throwable cause) {
super(cause);
}
}
/**
* Block a list of numbers.
*
* @param countryIso the current location used to guess the country code of the number if not
* available. If {@code null} and {@code number} does not have a country code, only the
* original number will be blocked.
* @throws BlockingFailedException in the returned future if the operation failed.
*/
public static ListenableFuture<Void> block(
Context context, ImmutableCollection<String> numbers, @Nullable String countryIso) {
return DialerExecutorComponent.get(context)
.backgroundExecutor()
.submit(
() -> {
ArrayList<ContentProviderOperation> operations = new ArrayList<>();
for (String number : numbers) {
ContentValues values = new ContentValues();
values.put(BlockedNumbers.COLUMN_ORIGINAL_NUMBER, number);
String e164Number = PhoneNumberUtils.formatNumberToE164(number, countryIso);
if (e164Number != null) {
values.put(BlockedNumbers.COLUMN_E164_NUMBER, e164Number);
}
operations.add(
ContentProviderOperation.newInsert(BlockedNumbers.CONTENT_URI)
.withValues(values)
.build());
}
applyBatchOps(context.getContentResolver(), operations);
return null;
});
}
/**
* Unblock a list of number.
*
* @param countryIso the current location used to guess the country code of the number if not
* available. If {@code null} and {@code number} does not have a country code, only the
* original number will be unblocked.
* @throws BlockingFailedException in the returned future if the operation failed.
*/
public static ListenableFuture<Void> unblock(
Context context, ImmutableCollection<String> numbers, @Nullable String countryIso) {
return DialerExecutorComponent.get(context)
.backgroundExecutor()
.submit(
() -> {
ArrayList<ContentProviderOperation> operations = new ArrayList<>();
for (String number : numbers) {
Selection selection =
Selection.column(BlockedNumbers.COLUMN_ORIGINAL_NUMBER).is("=", number);
String e164Number = PhoneNumberUtils.formatNumberToE164(number, countryIso);
if (e164Number != null) {
selection =
selection
.buildUpon()
.or(
Selection.column(BlockedNumbers.COLUMN_E164_NUMBER)
.is("=", e164Number))
.build();
}
operations.add(
ContentProviderOperation.newDelete(BlockedNumbers.CONTENT_URI)
.withSelection(selection.getSelection(), selection.getSelectionArgs())
.build());
}
applyBatchOps(context.getContentResolver(), operations);
return null;
});
}
/**
* Get blocked numbers from a list of number.
*
* @param countryIso the current location used to guess the country code of the number if not
* available. If {@code null} and {@code number} does not have a country code, only the
* original number will be used to check blocked status.
* @throws BlockingFailedException in the returned future if the operation failed.
*/
public static ListenableFuture<ImmutableMap<String, Boolean>> isBlocked(
Context context, ImmutableCollection<String> numbers, @Nullable String countryIso) {
return DialerExecutorComponent.get(context)
.backgroundExecutor()
.submit(
() -> {
Map<String, Boolean> blockedStatus = new ArrayMap<>();
List<String> e164Numbers = new ArrayList<>();
for (String number : numbers) {
// Initialize as unblocked
blockedStatus.put(number, false);
String e164Number = PhoneNumberUtils.formatNumberToE164(number, countryIso);
if (e164Number != null) {
e164Numbers.add(e164Number);
}
}
Selection selection =
Selection.builder()
.or(Selection.column(BlockedNumbers.COLUMN_ORIGINAL_NUMBER).in(numbers))
.or(Selection.column(BlockedNumbers.COLUMN_E164_NUMBER).in(e164Numbers))
.build();
try (Cursor cursor =
context
.getContentResolver()
.query(
BlockedNumbers.CONTENT_URI,
new String[] {BlockedNumbers.COLUMN_ORIGINAL_NUMBER},
selection.getSelection(),
selection.getSelectionArgs(),
null)) {
if (cursor == null) {
return ImmutableMap.copyOf(blockedStatus);
}
while (cursor.moveToNext()) {
// Update blocked status
blockedStatus.put(cursor.getString(0), true);
}
}
return ImmutableMap.copyOf(blockedStatus);
});
}
private static ContentProviderResult[] applyBatchOps(
ContentResolver resolver, ArrayList<ContentProviderOperation> ops)
throws BlockingFailedException {
try {
return resolver.applyBatch(BlockedNumberContract.AUTHORITY, ops);
} catch (RemoteException | OperationApplicationException | SecurityException e) {
throw new BlockingFailedException(e);
}
}
}
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