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/*
* Copyright (C) 2017 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.preferredsim.impl;
import android.Manifest.permission;
import android.content.ContentProvider;
import android.content.ContentValues;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.text.TextUtils;
import com.android.dialer.preferredsim.PreferredSimFallbackContract;
import com.android.dialer.preferredsim.PreferredSimFallbackContract.PreferredSim;
/**
* Content provider for preferred SIM columns that is only available in ContactsProvider after P.
* Only supports {@link PreferredSimFallbackContract#CONTENT_URI} without id. Insert and delete not
* supported because there are no current use case.
*
* @see PreferredSimFallbackContract
*/
public class PreferredSimFallbackProvider extends ContentProvider {
private static final String UPDATE_ID_SELECTION = PreferredSim.DATA_ID + " = ?";
private PreferredSimDatabaseHelper databaseHelper;
@Override
public boolean onCreate() {
databaseHelper = new PreferredSimDatabaseHelper(getContext());
return true;
}
@Nullable
@Override
public Cursor query(
@NonNull Uri uri,
@Nullable String[] projection,
@Nullable String selection,
@Nullable String[] selectionArgs,
@Nullable String sortOrder) {
checkReadContactsPermission();
return databaseHelper
.getReadableDatabase()
.query(
PreferredSimDatabaseHelper.TABLE,
projection,
selection,
selectionArgs,
null,
null,
sortOrder);
}
@Nullable
@Override
public String getType(@NonNull Uri uri) {
return null;
}
@Nullable
@Override
public Uri insert(@NonNull Uri uri, @Nullable ContentValues values) {
throw new IllegalArgumentException("Unsupported operation");
}
/**
* A row should only be deleted through {@link android.provider.ContactsContract.Data}. Since
* {@link android.provider.ContactsContract.Data#_ID} is AUTOINCREMENT and could not be reused,
* rows in this database will simply be orphaned and not cleaned up. To unset preference, update
* {@link PreferredSim#PREFERRED_PHONE_ACCOUNT_COMPONENT_NAME} and {@link
* PreferredSim#PREFERRED_PHONE_ACCOUNT_ID} to {@code null}. Delete is only allowed from dialer so
* simulator can wipe all preference.
*/
@Override
public int delete(
@NonNull Uri uri, @Nullable String selection, @Nullable String[] selectionArgs) {
if (!TextUtils.equals(getContext().getPackageName(), getCallingPackage())) {
throw new IllegalArgumentException("Unsupported operation");
}
return databaseHelper
.getWritableDatabase()
.delete(PreferredSimDatabaseHelper.TABLE, selection, selectionArgs);
}
/**
* Data will be inserted if {@link PreferredSim#DATA_ID} does not already exist in the database.
* During update the whole row will be replaced.
*
* @param uri must be {@link PreferredSimFallbackContract#CONTENT_URI}
* @param values must contains exactly the keys {@link
* PreferredSim#PREFERRED_PHONE_ACCOUNT_COMPONENT_NAME} {@link
* PreferredSim#PREFERRED_PHONE_ACCOUNT_ID}. The value may be {@code null}
* @param selection must equals "data_id = ?"
* @param selectionArgs must contains exactly the {@link PreferredSim#DATA_ID}
*/
@Override
public int update(
@NonNull Uri uri,
@Nullable ContentValues values,
@Nullable String selection,
@Nullable String[] selectionArgs) {
checkWriteContactsPermission();
if (values == null) {
return 0;
}
if (!UPDATE_ID_SELECTION.equals(selection)
|| selectionArgs == null
|| selectionArgs.length != 1) {
throw new IllegalArgumentException("Unsupported operation");
}
values.put(PreferredSim.DATA_ID, selectionArgs[0]);
if (databaseHelper.getWritableDatabase().replace(PreferredSimDatabaseHelper.TABLE, null, values)
== -1) {
throw new IllegalStateException("update failed");
}
getContext().getContentResolver().notifyChange(PreferredSimFallbackContract.CONTENT_URI, null);
return 1;
}
private void checkReadContactsPermission() {
if (getContext().checkCallingOrSelfPermission(permission.READ_CONTACTS)
== PackageManager.PERMISSION_DENIED) {
throw new SecurityException("READ_CONTACTS required");
}
}
private void checkWriteContactsPermission() {
if (getContext().checkCallingOrSelfPermission(permission.WRITE_CONTACTS)
== PackageManager.PERMISSION_DENIED) {
throw new SecurityException("WRITE_CONTACTS required");
}
}
}
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