/* * 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.dialer.backup; import android.annotation.TargetApi; import android.content.ContentResolver; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.os.Build.VERSION_CODES; import android.provider.VoicemailContract; import android.provider.VoicemailContract.Voicemails; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.telecom.PhoneAccountHandle; import android.telecom.TelecomManager; import android.util.Pair; import com.android.dialer.common.Assert; import com.android.dialer.common.LogUtil; import com.android.dialer.configprovider.ConfigProviderBindings; import com.android.voicemail.VoicemailComponent; import com.google.common.io.ByteStreams; import com.google.common.io.Files; import com.google.protobuf.ByteString; import java.io.ByteArrayInputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.util.ArrayList; import java.util.List; /** Helper functions for DialerBackupAgent */ public class DialerBackupUtils { // Backup voicemails up to 20MB static long maxVoicemailSizeToBackup = 20000000L; static final String RESTORED_COLUMN = "restored"; private DialerBackupUtils() {} public static void copyAudioBytesToContentUri( @NonNull byte[] audioBytesArray, @NonNull OutputStream restoreStream) throws IOException { LogUtil.i("DialerBackupUtils.copyStream", "audioByteArray length: " + audioBytesArray.length); ByteArrayInputStream decodedStream = new ByteArrayInputStream(audioBytesArray); LogUtil.i( "DialerBackupUtils.copyStream", "decodedStream.available: " + decodedStream.available()); ByteStreams.copy(decodedStream, restoreStream); } public static @Nullable ByteString audioStreamToByteString(@NonNull InputStream stream) throws IOException { if (stream.available() > 0) { return ByteString.readFrom(stream); } else { LogUtil.i("DialerBackupUtils.audioStreamToByteArray", "no audio stream to backup"); } return ByteString.EMPTY; } public static void writeProtoToFile(@NonNull File file, @NonNull VoicemailInfo voicemailInfo) throws IOException { LogUtil.i( "DialerBackupUtils.writeProtoToFile", "backup " + voicemailInfo + " to " + file.getAbsolutePath()); byte[] bytes = voicemailInfo.toByteArray(); Files.write(bytes, file); } /** Only restore voicemails that have the restored column in calllog (NMR2+ builds) */ @TargetApi(VERSION_CODES.M) public static boolean canRestoreVoicemails(ContentResolver contentResolver, Context context) { try (Cursor cursor = contentResolver.query(Voicemails.CONTENT_URI, null, null, null, null)) { // Restored column only exists in NMR2 and above builds. if (cursor.getColumnIndex(RESTORED_COLUMN) != -1) { LogUtil.i("DialerBackupUtils.canRestoreVoicemails", "Build supports restore"); return true; } else { LogUtil.i("DialerBackupUtils.canRestoreVoicemails", "Build does not support restore"); return false; } } } public static VoicemailInfo protoFileToVoicemailInfo(@NonNull File file) throws IOException { byte[] byteArray = Files.toByteArray(file); return VoicemailInfo.parseFrom(byteArray); } @TargetApi(VERSION_CODES.M) public static VoicemailInfo convertVoicemailCursorRowToProto( @NonNull Cursor cursor, @NonNull ContentResolver contentResolver) throws IOException { VoicemailInfo.Builder voicemailInfo = VoicemailInfo.newBuilder(); for (int i = 0; i < cursor.getColumnCount(); ++i) { String name = cursor.getColumnName(i); String value = cursor.getString(i); LogUtil.i( "DialerBackupUtils.convertVoicemailCursorRowToProto", "column index: %d, column name: %s, column value: %s", i, name, value); switch (name) { case Voicemails.DATE: voicemailInfo.setDate(value); break; case Voicemails.DELETED: voicemailInfo.setDeleted(value); break; case Voicemails.DIRTY: voicemailInfo.setDirty(value); break; case Voicemails.DIR_TYPE: voicemailInfo.setDirType(value); break; case Voicemails.DURATION: voicemailInfo.setDuration(value); break; case Voicemails.HAS_CONTENT: voicemailInfo.setHasContent(value); break; case Voicemails.IS_READ: voicemailInfo.setIsRead(value); break; case Voicemails.ITEM_TYPE: voicemailInfo.setItemType(value); break; case Voicemails.LAST_MODIFIED: voicemailInfo.setLastModified(value); break; case Voicemails.MIME_TYPE: voicemailInfo.setMimeType(value); break; case Voicemails.NUMBER: voicemailInfo.setNumber(value); break; case Voicemails.PHONE_ACCOUNT_COMPONENT_NAME: voicemailInfo.setPhoneAccountComponentName(value); break; case Voicemails.PHONE_ACCOUNT_ID: voicemailInfo.setPhoneAccountId(value); break; case Voicemails.SOURCE_DATA: voicemailInfo.setSourceData(value); break; case Voicemails.SOURCE_PACKAGE: voicemailInfo.setSourcePackage(value); break; case Voicemails.TRANSCRIPTION: voicemailInfo.setTranscription(value); break; case DialerBackupAgent.VOICEMAIL_URI: try (InputStream audioStream = contentResolver.openInputStream(Uri.parse(value))) { voicemailInfo.setEncodedVoicemailKey(audioStreamToByteString(audioStream)); } break; default: LogUtil.i( "DialerBackupUtils.convertVoicemailCursorRowToProto", "Not backing up column: %s, with value: %s", name, value); break; } } return voicemailInfo.build(); } public static Pair convertVoicemailProtoFileToContentValueAndAudioBytes( @NonNull File file, Context context) throws IOException { VoicemailInfo voicemailInfo = DialerBackupUtils.protoFileToVoicemailInfo(file); LogUtil.i( "DialerBackupUtils.convertVoicemailProtoFileToContentValueAndEncodedAudio", "file name: " + file.getName() + " voicemailInfo size: " + voicemailInfo.getSerializedSize()); if (isDuplicate(context, voicemailInfo)) { LogUtil.i( "DialerBackupUtils.convertVoicemailProtoFileToContentValueAndEncodedAudio", "voicemail already exists"); return null; } else { ContentValues contentValues = new ContentValues(); if (voicemailInfo.hasDate()) { contentValues.put(Voicemails.DATE, voicemailInfo.getDate()); } if (voicemailInfo.hasDeleted()) { contentValues.put(Voicemails.DELETED, voicemailInfo.getDeleted()); } if (!voicemailInfo.hasDirty()) { contentValues.put(Voicemails.DIRTY, voicemailInfo.getDirty()); } if (!voicemailInfo.hasDuration()) { contentValues.put(Voicemails.DURATION, voicemailInfo.getDuration()); } if (!voicemailInfo.hasIsRead()) { contentValues.put(Voicemails.IS_READ, voicemailInfo.getIsRead()); } if (!voicemailInfo.hasLastModified()) { contentValues.put(Voicemails.LAST_MODIFIED, voicemailInfo.getLastModified()); } if (!voicemailInfo.hasMimeType()) { contentValues.put(Voicemails.MIME_TYPE, voicemailInfo.getMimeType()); } if (!voicemailInfo.hasNumber()) { contentValues.put(Voicemails.NUMBER, voicemailInfo.getNumber()); } if (!voicemailInfo.hasPhoneAccountComponentName()) { contentValues.put( Voicemails.PHONE_ACCOUNT_COMPONENT_NAME, voicemailInfo.getPhoneAccountComponentName()); } if (!voicemailInfo.hasPhoneAccountId()) { contentValues.put(Voicemails.PHONE_ACCOUNT_ID, voicemailInfo.getPhoneAccountId()); } if (!voicemailInfo.hasSourceData()) { contentValues.put(Voicemails.SOURCE_DATA, voicemailInfo.getSourceData()); } if (!voicemailInfo.hasSourcePackage()) { contentValues.put(Voicemails.SOURCE_PACKAGE, voicemailInfo.getSourcePackage()); } if (!voicemailInfo.hasTranscription()) { contentValues.put(Voicemails.TRANSCRIPTION, voicemailInfo.getTranscription()); } contentValues.put(VoicemailContract.Voicemails.HAS_CONTENT, 1); contentValues.put(RESTORED_COLUMN, "1"); contentValues.put(Voicemails.SOURCE_PACKAGE, getSourcePackage(context, voicemailInfo)); LogUtil.i( "DialerBackupUtils.convertVoicemailProtoFileToContentValueAndEncodedAudio", "cv: " + contentValues); return Pair.create(contentValues, voicemailInfo.getEncodedVoicemailKey().toByteArray()); } } /** * We should be using the system package name as the source package if there is no endless VM/VM * archive present on the device. This is to separate pre-O (no endless VM) and O+ (endless VM) * devices. This ensures that the source of truth for VMs is the VM server when endless VM is not * enabled, and when endless VM/archived VMs is present, the source of truth for VMs is the device * itself. */ private static String getSourcePackage(Context context, VoicemailInfo voicemailInfo) { if (ConfigProviderBindings.get(context) .getBoolean("voicemail_restore_force_system_source_package", false)) { LogUtil.i("DialerBackupUtils.getSourcePackage", "forcing system source package"); return "com.android.phone"; } if (ConfigProviderBindings.get(context) .getBoolean("voicemail_restore_check_archive_for_source_package", true)) { if ("1".equals(voicemailInfo.getArchived())) { LogUtil.i( "DialerBackupUtils.getSourcePackage", "voicemail was archived, using app source package"); // Using our app's source package will prevent the archived voicemail from being deleted by // the system when it syncs with the voicemail server. In most cases the user will not see // duplicate voicemails because this voicemail was archived and likely deleted from the // voicemail server. return context.getPackageName(); } else { // Use the system source package. This means that if the voicemail is not present on the // voicemail server then the system will delete it when it syncs. LogUtil.i( "DialerBackupUtils.getSourcePackage", "voicemail was not archived, using system source package"); return "com.android.phone"; } } // Use our app's source package. This means that if the system syncs voicemail from the server // the user could potentially get duplicate voicemails. LogUtil.i("DialerBackupUtils.getSourcePackage", "defaulting to using app source package"); return context.getPackageName(); } @TargetApi(VERSION_CODES.M) private static boolean isDuplicate(Context context, VoicemailInfo voicemailInfo) { // This checks for VM that might already exist, and doesn't restore them try (Cursor cursor = context .getContentResolver() .query( VoicemailContract.Voicemails.CONTENT_URI, null, String.format( "(%s = ? AND %s = ? AND %s = ?)", Voicemails.NUMBER, Voicemails.DATE, Voicemails.DURATION), new String[] { voicemailInfo.getNumber(), voicemailInfo.getDate(), voicemailInfo.getDuration() }, null, null)) { if (cursor.moveToFirst() && ConfigProviderBindings.get(context) .getBoolean("enable_vm_restore_no_duplicate", true)) { return true; } } return false; } public static String getPhoneAccountClause(List phoneAccountsToArchive) { Assert.checkArgument(!phoneAccountsToArchive.isEmpty()); StringBuilder whereQuery = new StringBuilder(); whereQuery.append("("); for (int i = 0; i < phoneAccountsToArchive.size(); i++) { whereQuery.append( Voicemails.PHONE_ACCOUNT_ID + " = " + phoneAccountsToArchive.get(i).getId()); if (phoneAccountsToArchive.size() > 1 && i < phoneAccountsToArchive.size() - 1) { whereQuery.append(" OR "); } } whereQuery.append(")"); return whereQuery.toString(); } public static List getPhoneAccountsToArchive(Context context) { List phoneAccountsToBackUp = new ArrayList<>(); for (PhoneAccountHandle handle : context.getSystemService(TelecomManager.class).getCallCapablePhoneAccounts()) { if (VoicemailComponent.get(context) .getVoicemailClient() .isVoicemailArchiveEnabled(context, handle)) { phoneAccountsToBackUp.add(handle); LogUtil.i( "DialerBackupUtils.getPhoneAccountsToArchive", "enabled for: " + handle.toString()); } else { LogUtil.i( "DialerBackupUtils.getPhoneAccountsToArchive", "not enabled for: " + handle.toString()); } } return phoneAccountsToBackUp; } }