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/*
* Copyright (C) 2016 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.incallui.legacyblocking;
import android.Manifest.permission;
import android.content.Context;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.os.AsyncTask;
import android.provider.CallLog;
import android.support.v4.content.ContextCompat;
import com.android.dialer.common.LogUtil;
import com.android.dialer.telecom.TelecomUtil;
import java.util.Objects;
/**
* Deletes a blocked call from the call log. This is only used on Android Marshmallow. On later
* versions of the OS, call blocking is implemented in the system and there's no need to mess with
* the call log.
*/
public class DeleteBlockedCallTask extends AsyncTask<Void, Void, Long> {
public static final String IDENTIFIER = "DeleteBlockedCallTask";
// Try to identify if a call log entry corresponds to a number which was blocked. We match by
// by comparing its creation time to the time it was added in the InCallUi and seeing if they
// fall within a certain threshold.
private static final int MATCH_BLOCKED_CALL_THRESHOLD_MS = 3000;
private final Context context;
private final Listener listener;
private final String number;
private final long timeAddedMillis;
/**
* Creates the task to delete the new {@link CallLog} entry from the given blocked number.
*
* @param number The blocked number.
* @param timeAddedMillis The time at which the call from the blocked number was placed.
*/
public DeleteBlockedCallTask(
Context context, Listener listener, String number, long timeAddedMillis) {
this.context = Objects.requireNonNull(context);
this.listener = Objects.requireNonNull(listener);
this.number = number;
this.timeAddedMillis = timeAddedMillis;
}
@Override
public Long doInBackground(Void... params) {
if (ContextCompat.checkSelfPermission(context, permission.READ_CALL_LOG)
!= PackageManager.PERMISSION_GRANTED
|| ContextCompat.checkSelfPermission(context, permission.WRITE_CALL_LOG)
!= PackageManager.PERMISSION_GRANTED) {
LogUtil.i("DeleteBlockedCallTask.doInBackground", "missing call log permissions");
return -1L;
}
// First, lookup the call log entry of the most recent call with this number.
try (Cursor cursor =
context
.getContentResolver()
.query(
TelecomUtil.getCallLogUri(context),
CallLogDeleteBlockedCallQuery.PROJECTION,
CallLog.Calls.NUMBER + "= ?",
new String[] {number},
CallLog.Calls.DATE + " DESC LIMIT 1")) {
// If match is found, delete this call log entry and return the call log entry id.
if (cursor != null && cursor.moveToFirst()) {
long creationTime = cursor.getLong(CallLogDeleteBlockedCallQuery.DATE_COLUMN_INDEX);
if (timeAddedMillis > creationTime
&& timeAddedMillis - creationTime < MATCH_BLOCKED_CALL_THRESHOLD_MS) {
long callLogEntryId = cursor.getLong(CallLogDeleteBlockedCallQuery.ID_COLUMN_INDEX);
context
.getContentResolver()
.delete(
TelecomUtil.getCallLogUri(context),
CallLog.Calls._ID + " IN (" + callLogEntryId + ")",
null);
return callLogEntryId;
}
}
}
return -1L;
}
@Override
public void onPostExecute(Long callLogEntryId) {
listener.onDeleteBlockedCallTaskComplete(callLogEntryId >= 0);
}
/** Callback invoked when delete is complete. */
public interface Listener {
void onDeleteBlockedCallTaskComplete(boolean didFindEntry);
}
private static class CallLogDeleteBlockedCallQuery {
static final String[] PROJECTION = new String[] {CallLog.Calls._ID, CallLog.Calls.DATE};
static final int ID_COLUMN_INDEX = 0;
static final int DATE_COLUMN_INDEX = 1;
}
}
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