kopia lustrzana https://github.com/ryukoposting/Signal-Android
701 wiersze
31 KiB
Java
701 wiersze
31 KiB
Java
package org.thoughtcrime.securesms.backup;
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import android.content.Context;
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import android.database.Cursor;
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import android.text.TextUtils;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.annotation.RequiresApi;
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import androidx.documentfile.provider.DocumentFile;
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import com.annimon.stream.function.Predicate;
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import com.google.protobuf.ByteString;
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import net.zetetic.database.sqlcipher.SQLiteDatabase;
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import org.greenrobot.eventbus.EventBus;
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import org.signal.core.util.Conversions;
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import org.signal.core.util.logging.Log;
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import org.signal.libsignal.protocol.kdf.HKDFv3;
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import org.signal.libsignal.protocol.util.ByteUtil;
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import org.thoughtcrime.securesms.attachments.AttachmentId;
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import org.thoughtcrime.securesms.crypto.AttachmentSecret;
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import org.thoughtcrime.securesms.crypto.ClassicDecryptingPartInputStream;
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import org.thoughtcrime.securesms.crypto.ModernDecryptingPartInputStream;
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import org.thoughtcrime.securesms.database.AttachmentDatabase;
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import org.thoughtcrime.securesms.database.EmojiSearchDatabase;
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import org.thoughtcrime.securesms.database.GroupReceiptDatabase;
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import org.thoughtcrime.securesms.database.KeyValueDatabase;
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import org.thoughtcrime.securesms.database.MentionDatabase;
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import org.thoughtcrime.securesms.database.MmsDatabase;
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import org.thoughtcrime.securesms.database.MmsSmsColumns;
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import org.thoughtcrime.securesms.database.OneTimePreKeyDatabase;
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import org.thoughtcrime.securesms.database.PendingRetryReceiptDatabase;
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import org.thoughtcrime.securesms.database.ReactionDatabase;
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import org.thoughtcrime.securesms.database.SearchDatabase;
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import org.thoughtcrime.securesms.database.SenderKeyDatabase;
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import org.thoughtcrime.securesms.database.SenderKeySharedDatabase;
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import org.thoughtcrime.securesms.database.SessionDatabase;
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import org.thoughtcrime.securesms.database.SignedPreKeyDatabase;
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import org.thoughtcrime.securesms.database.SmsDatabase;
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import org.thoughtcrime.securesms.database.StickerDatabase;
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import org.thoughtcrime.securesms.database.model.AvatarPickerDatabase;
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import org.thoughtcrime.securesms.database.model.MessageId;
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import org.thoughtcrime.securesms.dependencies.ApplicationDependencies;
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import org.thoughtcrime.securesms.keyvalue.KeyValueDataSet;
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import org.thoughtcrime.securesms.keyvalue.SignalStore;
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import org.thoughtcrime.securesms.profiles.AvatarHelper;
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import org.thoughtcrime.securesms.recipients.RecipientId;
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import org.signal.core.util.CursorUtil;
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import org.thoughtcrime.securesms.util.SetUtil;
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import org.thoughtcrime.securesms.util.Stopwatch;
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import org.thoughtcrime.securesms.util.TextSecurePreferences;
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import org.thoughtcrime.securesms.util.Util;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.security.InvalidAlgorithmParameterException;
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import java.security.InvalidKeyException;
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import java.security.NoSuchAlgorithmException;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Objects;
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import java.util.Set;
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import javax.crypto.BadPaddingException;
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import javax.crypto.Cipher;
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import javax.crypto.IllegalBlockSizeException;
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import javax.crypto.Mac;
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import javax.crypto.NoSuchPaddingException;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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public class FullBackupExporter extends FullBackupBase {
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private static final String TAG = Log.tag(FullBackupExporter.class);
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private static final long DATABASE_VERSION_RECORD_COUNT = 1L;
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private static final long TABLE_RECORD_COUNT_MULTIPLIER = 3L;
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private static final long IDENTITY_KEY_BACKUP_RECORD_COUNT = 2L;
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private static final long FINAL_MESSAGE_COUNT = 1L;
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private static final Set<String> BLACKLISTED_TABLES = SetUtil.newHashSet(
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SignedPreKeyDatabase.TABLE_NAME,
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OneTimePreKeyDatabase.TABLE_NAME,
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SessionDatabase.TABLE_NAME,
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SearchDatabase.SMS_FTS_TABLE_NAME,
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SearchDatabase.MMS_FTS_TABLE_NAME,
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EmojiSearchDatabase.TABLE_NAME,
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SenderKeyDatabase.TABLE_NAME,
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SenderKeySharedDatabase.TABLE_NAME,
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PendingRetryReceiptDatabase.TABLE_NAME,
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AvatarPickerDatabase.TABLE_NAME
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);
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public static void export(@NonNull Context context,
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@NonNull AttachmentSecret attachmentSecret,
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@NonNull SQLiteDatabase input,
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@NonNull File output,
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@NonNull String passphrase,
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@NonNull BackupCancellationSignal cancellationSignal)
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throws IOException
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{
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try (OutputStream outputStream = new FileOutputStream(output)) {
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internalExport(context, attachmentSecret, input, outputStream, passphrase, true, cancellationSignal);
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}
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}
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@RequiresApi(29)
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public static void export(@NonNull Context context,
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@NonNull AttachmentSecret attachmentSecret,
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@NonNull SQLiteDatabase input,
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@NonNull DocumentFile output,
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@NonNull String passphrase,
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@NonNull BackupCancellationSignal cancellationSignal)
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throws IOException
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{
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try (OutputStream outputStream = Objects.requireNonNull(context.getContentResolver().openOutputStream(output.getUri()))) {
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internalExport(context, attachmentSecret, input, outputStream, passphrase, true, cancellationSignal);
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}
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}
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public static void transfer(@NonNull Context context,
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@NonNull AttachmentSecret attachmentSecret,
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@NonNull SQLiteDatabase input,
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@NonNull OutputStream outputStream,
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@NonNull String passphrase)
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throws IOException
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{
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internalExport(context, attachmentSecret, input, outputStream, passphrase, false, () -> false);
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}
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private static void internalExport(@NonNull Context context,
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@NonNull AttachmentSecret attachmentSecret,
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@NonNull SQLiteDatabase input,
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@NonNull OutputStream fileOutputStream,
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@NonNull String passphrase,
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boolean closeOutputStream,
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@NonNull BackupCancellationSignal cancellationSignal)
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throws IOException
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{
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BackupFrameOutputStream outputStream = new BackupFrameOutputStream(fileOutputStream, passphrase);
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int count = 0;
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long estimatedCountOutside = 0L;
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try {
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outputStream.writeDatabaseVersion(input.getVersion());
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count++;
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List<String> tables = exportSchema(input, outputStream);
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count += tables.size() * TABLE_RECORD_COUNT_MULTIPLIER;
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final long estimatedCount = calculateCount(context, input, tables);
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estimatedCountOutside = estimatedCount;
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Stopwatch stopwatch = new Stopwatch("Backup");
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for (String table : tables) {
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throwIfCanceled(cancellationSignal);
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if (table.equals(MmsDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isNonExpiringMmsMessage(cursor) && isNotReleaseChannel(cursor), null, count, estimatedCount, cancellationSignal);
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} else if (table.equals(SmsDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isNonExpiringSmsMessage(cursor) && isNotReleaseChannel(cursor), null, count, estimatedCount, cancellationSignal);
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} else if (table.equals(ReactionDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isForNonExpiringMessage(input, new MessageId(CursorUtil.requireLong(cursor, ReactionDatabase.MESSAGE_ID), CursorUtil.requireBoolean(cursor, ReactionDatabase.IS_MMS))), null, count, estimatedCount, cancellationSignal);
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} else if (table.equals(MentionDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isForNonExpiringMmsMessageAndNotReleaseChannel(input, CursorUtil.requireLong(cursor, MentionDatabase.MESSAGE_ID)), null, count, estimatedCount, cancellationSignal);
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} else if (table.equals(GroupReceiptDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isForNonExpiringMmsMessageAndNotReleaseChannel(input, cursor.getLong(cursor.getColumnIndexOrThrow(GroupReceiptDatabase.MMS_ID))), null, count, estimatedCount, cancellationSignal);
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} else if (table.equals(AttachmentDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> isForNonExpiringMmsMessageAndNotReleaseChannel(input, cursor.getLong(cursor.getColumnIndexOrThrow(AttachmentDatabase.MMS_ID))), (cursor, innerCount) -> exportAttachment(attachmentSecret, cursor, outputStream, innerCount, estimatedCount), count, estimatedCount, cancellationSignal);
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} else if (table.equals(StickerDatabase.TABLE_NAME)) {
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count = exportTable(table, input, outputStream, cursor -> true, (cursor, innerCount) -> exportSticker(attachmentSecret, cursor, outputStream, innerCount, estimatedCount), count, estimatedCount, cancellationSignal);
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} else if (!BLACKLISTED_TABLES.contains(table) && !table.startsWith("sqlite_")) {
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count = exportTable(table, input, outputStream, null, null, count, estimatedCount, cancellationSignal);
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}
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stopwatch.split("table::" + table);
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}
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for (BackupProtos.SharedPreference preference : TextSecurePreferences.getPreferencesToSaveToBackup(context)) {
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throwIfCanceled(cancellationSignal);
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
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outputStream.write(preference);
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}
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stopwatch.split("prefs");
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count = exportKeyValues(outputStream, SignalStore.getKeysToIncludeInBackup(), count, estimatedCount, cancellationSignal);
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stopwatch.split("key_values");
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for (AvatarHelper.Avatar avatar : AvatarHelper.getAvatars(context)) {
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throwIfCanceled(cancellationSignal);
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if (avatar != null) {
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
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outputStream.write(avatar.getFilename(), avatar.getInputStream(), avatar.getLength());
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}
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}
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stopwatch.split("avatars");
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stopwatch.stop(TAG);
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outputStream.writeEnd();
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} finally {
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if (closeOutputStream) {
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outputStream.close();
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}
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.FINISHED, ++count, estimatedCountOutside));
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}
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}
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private static long calculateCount(@NonNull Context context, @NonNull SQLiteDatabase input, List<String> tables) {
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long count = DATABASE_VERSION_RECORD_COUNT + TABLE_RECORD_COUNT_MULTIPLIER * tables.size();
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for (String table : tables) {
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if (table.equals(MmsDatabase.TABLE_NAME)) {
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count += getCount(input, BackupCountQueries.mmsCount);
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} else if (table.equals(SmsDatabase.TABLE_NAME)) {
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count += getCount(input, BackupCountQueries.smsCount);
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} else if (table.equals(GroupReceiptDatabase.TABLE_NAME)) {
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count += getCount(input, BackupCountQueries.getGroupReceiptCount());
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} else if (table.equals(AttachmentDatabase.TABLE_NAME)) {
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count += getCount(input, BackupCountQueries.getAttachmentCount());
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} else if (table.equals(StickerDatabase.TABLE_NAME)) {
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count += getCount(input, "SELECT COUNT(*) FROM " + table);
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} else if (!BLACKLISTED_TABLES.contains(table) && !table.startsWith("sqlite_")) {
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count += getCount(input, "SELECT COUNT(*) FROM " + table);
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}
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}
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count += IDENTITY_KEY_BACKUP_RECORD_COUNT;
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count += TextSecurePreferences.getPreferencesToSaveToBackupCount(context);
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KeyValueDataSet dataSet = KeyValueDatabase.getInstance(ApplicationDependencies.getApplication())
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.getDataSet();
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for (String key : SignalStore.getKeysToIncludeInBackup()) {
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if (dataSet.containsKey(key)) {
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count++;
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}
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}
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count += AvatarHelper.getAvatarCount(context);
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return count + FINAL_MESSAGE_COUNT;
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}
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private static long getCount(@NonNull SQLiteDatabase input, @NonNull String query) {
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try (Cursor cursor = input.rawQuery(query)) {
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return cursor.moveToFirst() ? cursor.getLong(0) : 0;
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}
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}
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private static void throwIfCanceled(@NonNull BackupCancellationSignal cancellationSignal) throws BackupCanceledException {
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if (cancellationSignal.isCanceled()) {
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throw new BackupCanceledException();
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}
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}
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private static List<String> exportSchema(@NonNull SQLiteDatabase input, @NonNull BackupFrameOutputStream outputStream)
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throws IOException
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{
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List<String> tables = new LinkedList<>();
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try (Cursor cursor = input.rawQuery("SELECT sql, name, type FROM sqlite_master", null)) {
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while (cursor != null && cursor.moveToNext()) {
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String sql = cursor.getString(0);
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String name = cursor.getString(1);
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String type = cursor.getString(2);
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if (sql != null) {
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boolean isSmsFtsSecretTable = name != null && !name.equals(SearchDatabase.SMS_FTS_TABLE_NAME) && name.startsWith(SearchDatabase.SMS_FTS_TABLE_NAME);
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boolean isMmsFtsSecretTable = name != null && !name.equals(SearchDatabase.MMS_FTS_TABLE_NAME) && name.startsWith(SearchDatabase.MMS_FTS_TABLE_NAME);
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boolean isEmojiFtsSecretTable = name != null && !name.equals(EmojiSearchDatabase.TABLE_NAME) && name.startsWith(EmojiSearchDatabase.TABLE_NAME);
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if (!isSmsFtsSecretTable && !isMmsFtsSecretTable && !isEmojiFtsSecretTable) {
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if ("table".equals(type)) {
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tables.add(name);
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}
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outputStream.write(BackupProtos.SqlStatement.newBuilder().setStatement(cursor.getString(0)).build());
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}
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}
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}
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}
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return tables;
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}
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private static int exportTable(@NonNull String table,
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@NonNull SQLiteDatabase input,
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@NonNull BackupFrameOutputStream outputStream,
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@Nullable Predicate<Cursor> predicate,
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@Nullable PostProcessor postProcess,
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int count,
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long estimatedCount,
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@NonNull BackupCancellationSignal cancellationSignal)
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throws IOException
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{
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String template = "INSERT INTO " + table + " VALUES ";
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try (Cursor cursor = input.rawQuery("SELECT * FROM " + table, null)) {
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while (cursor != null && cursor.moveToNext()) {
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throwIfCanceled(cancellationSignal);
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if (predicate == null || predicate.test(cursor)) {
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StringBuilder statement = new StringBuilder(template);
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BackupProtos.SqlStatement.Builder statementBuilder = BackupProtos.SqlStatement.newBuilder();
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statement.append('(');
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for (int i=0;i<cursor.getColumnCount();i++) {
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statement.append('?');
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if (cursor.getType(i) == Cursor.FIELD_TYPE_STRING) {
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statementBuilder.addParameters(BackupProtos.SqlStatement.SqlParameter.newBuilder().setStringParamter(cursor.getString(i)));
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} else if (cursor.getType(i) == Cursor.FIELD_TYPE_FLOAT) {
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statementBuilder.addParameters(BackupProtos.SqlStatement.SqlParameter.newBuilder().setDoubleParameter(cursor.getDouble(i)));
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} else if (cursor.getType(i) == Cursor.FIELD_TYPE_INTEGER) {
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statementBuilder.addParameters(BackupProtos.SqlStatement.SqlParameter.newBuilder().setIntegerParameter(cursor.getLong(i)));
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} else if (cursor.getType(i) == Cursor.FIELD_TYPE_BLOB) {
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statementBuilder.addParameters(BackupProtos.SqlStatement.SqlParameter.newBuilder().setBlobParameter(ByteString.copyFrom(cursor.getBlob(i))));
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} else if (cursor.getType(i) == Cursor.FIELD_TYPE_NULL) {
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statementBuilder.addParameters(BackupProtos.SqlStatement.SqlParameter.newBuilder().setNullparameter(true));
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} else {
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throw new AssertionError("unknown type?" + cursor.getType(i));
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}
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if (i < cursor.getColumnCount()-1) {
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statement.append(',');
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}
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}
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statement.append(')');
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
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outputStream.write(statementBuilder.setStatement(statement.toString()).build());
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if (postProcess != null) {
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count = postProcess.postProcess(cursor, count);
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}
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}
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}
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}
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return count;
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}
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private static int exportAttachment(@NonNull AttachmentSecret attachmentSecret, @NonNull Cursor cursor, @NonNull BackupFrameOutputStream outputStream, int count, long estimatedCount) {
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try {
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long rowId = cursor.getLong(cursor.getColumnIndexOrThrow(AttachmentDatabase.ROW_ID));
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long uniqueId = cursor.getLong(cursor.getColumnIndexOrThrow(AttachmentDatabase.UNIQUE_ID));
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long size = cursor.getLong(cursor.getColumnIndexOrThrow(AttachmentDatabase.SIZE));
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String data = cursor.getString(cursor.getColumnIndexOrThrow(AttachmentDatabase.DATA));
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byte[] random = cursor.getBlob(cursor.getColumnIndexOrThrow(AttachmentDatabase.DATA_RANDOM));
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if (!TextUtils.isEmpty(data)) {
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long fileLength = new File(data).length();
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long dbLength = size;
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if (size <= 0 || fileLength != dbLength) {
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size = calculateVeryOldStreamLength(attachmentSecret, random, data);
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Log.w(TAG, "Needed size calculation! Manual: " + size + " File: " + fileLength + " DB: " + dbLength + " ID: " + new AttachmentId(rowId, uniqueId));
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}
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}
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if (!TextUtils.isEmpty(data) && size > 0) {
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InputStream inputStream;
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if (random != null && random.length == 32) inputStream = ModernDecryptingPartInputStream.createFor(attachmentSecret, random, new File(data), 0);
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else inputStream = ClassicDecryptingPartInputStream.createFor(attachmentSecret, new File(data));
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
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outputStream.write(new AttachmentId(rowId, uniqueId), inputStream, size);
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}
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} catch (IOException e) {
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Log.w(TAG, e);
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}
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return count;
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}
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private static int exportSticker(@NonNull AttachmentSecret attachmentSecret, @NonNull Cursor cursor, @NonNull BackupFrameOutputStream outputStream, int count, long estimatedCount) {
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try {
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long rowId = cursor.getLong(cursor.getColumnIndexOrThrow(StickerDatabase._ID));
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long size = cursor.getLong(cursor.getColumnIndexOrThrow(StickerDatabase.FILE_LENGTH));
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String data = cursor.getString(cursor.getColumnIndexOrThrow(StickerDatabase.FILE_PATH));
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byte[] random = cursor.getBlob(cursor.getColumnIndexOrThrow(StickerDatabase.FILE_RANDOM));
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if (!TextUtils.isEmpty(data) && size > 0) {
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EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
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InputStream inputStream = ModernDecryptingPartInputStream.createFor(attachmentSecret, random, new File(data), 0);
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outputStream.writeSticker(rowId, inputStream, size);
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}
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} catch (IOException e) {
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Log.w(TAG, e);
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}
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return count;
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}
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private static long calculateVeryOldStreamLength(@NonNull AttachmentSecret attachmentSecret, @Nullable byte[] random, @NonNull String data) throws IOException {
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long result = 0;
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InputStream inputStream;
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if (random != null && random.length == 32) inputStream = ModernDecryptingPartInputStream.createFor(attachmentSecret, random, new File(data), 0);
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else inputStream = ClassicDecryptingPartInputStream.createFor(attachmentSecret, new File(data));
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int read;
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byte[] buffer = new byte[8192];
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while ((read = inputStream.read(buffer, 0, buffer.length)) != -1) {
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result += read;
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}
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return result;
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}
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private static int exportKeyValues(@NonNull BackupFrameOutputStream outputStream,
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@NonNull List<String> keysToIncludeInBackup,
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int count,
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long estimatedCount,
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BackupCancellationSignal cancellationSignal) throws IOException
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{
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KeyValueDataSet dataSet = KeyValueDatabase.getInstance(ApplicationDependencies.getApplication())
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.getDataSet();
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for (String key : keysToIncludeInBackup) {
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throwIfCanceled(cancellationSignal);
|
|
if (!dataSet.containsKey(key)) {
|
|
continue;
|
|
}
|
|
BackupProtos.KeyValue.Builder builder = BackupProtos.KeyValue.newBuilder()
|
|
.setKey(key);
|
|
|
|
Class<?> type = dataSet.getType(key);
|
|
if (type == byte[].class) {
|
|
byte[] data = dataSet.getBlob(key, null);
|
|
if (data != null) {
|
|
builder.setBlobValue(ByteString.copyFrom(dataSet.getBlob(key, null)));
|
|
} else {
|
|
Log.w(TAG, "Skipping storing null blob for key: " + key);
|
|
}
|
|
} else if (type == Boolean.class) {
|
|
builder.setBooleanValue(dataSet.getBoolean(key, false));
|
|
} else if (type == Float.class) {
|
|
builder.setFloatValue(dataSet.getFloat(key, 0));
|
|
} else if (type == Integer.class) {
|
|
builder.setIntegerValue(dataSet.getInteger(key, 0));
|
|
} else if (type == Long.class) {
|
|
builder.setLongValue(dataSet.getLong(key, 0));
|
|
} else if (type == String.class) {
|
|
String data = dataSet.getString(key, null);
|
|
if (data != null) {
|
|
builder.setStringValue(dataSet.getString(key, null));
|
|
} else {
|
|
Log.w(TAG, "Skipping storing null string for key: " + key);
|
|
}
|
|
} else {
|
|
throw new AssertionError("Unknown type: " + type);
|
|
}
|
|
|
|
EventBus.getDefault().post(new BackupEvent(BackupEvent.Type.PROGRESS, ++count, estimatedCount));
|
|
outputStream.write(builder.build());
|
|
}
|
|
|
|
return count;
|
|
}
|
|
|
|
private static boolean isNonExpiringMmsMessage(@NonNull Cursor cursor) {
|
|
return cursor.getLong(cursor.getColumnIndexOrThrow(MmsSmsColumns.EXPIRES_IN)) <= 0 &&
|
|
cursor.getLong(cursor.getColumnIndexOrThrow(MmsDatabase.VIEW_ONCE)) <= 0;
|
|
}
|
|
|
|
private static boolean isNonExpiringSmsMessage(@NonNull Cursor cursor) {
|
|
return cursor.getLong(cursor.getColumnIndexOrThrow(MmsSmsColumns.EXPIRES_IN)) <= 0;
|
|
}
|
|
|
|
private static boolean isForNonExpiringMessage(@NonNull SQLiteDatabase db, @NonNull MessageId messageId) {
|
|
if (messageId.isMms()) {
|
|
return isForNonExpiringMmsMessageAndNotReleaseChannel(db, messageId.getId());
|
|
} else {
|
|
return isForNonExpiringSmsMessage(db, messageId.getId());
|
|
}
|
|
}
|
|
|
|
private static boolean isForNonExpiringSmsMessage(@NonNull SQLiteDatabase db, long smsId) {
|
|
String[] columns = new String[] { SmsDatabase.EXPIRES_IN };
|
|
String where = SmsDatabase.ID + " = ?";
|
|
String[] args = new String[] { String.valueOf(smsId) };
|
|
|
|
try (Cursor cursor = db.query(SmsDatabase.TABLE_NAME, columns, where, args, null, null, null)) {
|
|
if (cursor != null && cursor.moveToFirst()) {
|
|
return isNonExpiringSmsMessage(cursor);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static boolean isForNonExpiringMmsMessageAndNotReleaseChannel(@NonNull SQLiteDatabase db, long mmsId) {
|
|
String[] columns = new String[] { MmsDatabase.RECIPIENT_ID, MmsDatabase.EXPIRES_IN, MmsDatabase.VIEW_ONCE};
|
|
String where = MmsDatabase.ID + " = ?";
|
|
String[] args = new String[] { String.valueOf(mmsId) };
|
|
|
|
try (Cursor mmsCursor = db.query(MmsDatabase.TABLE_NAME, columns, where, args, null, null, null)) {
|
|
if (mmsCursor != null && mmsCursor.moveToFirst()) {
|
|
return isNonExpiringMmsMessage(mmsCursor) && isNotReleaseChannel(mmsCursor);
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
private static boolean isNotReleaseChannel(Cursor cursor) {
|
|
RecipientId releaseChannel = SignalStore.releaseChannelValues().getReleaseChannelRecipientId();
|
|
return releaseChannel == null || cursor.getLong(cursor.getColumnIndexOrThrow(MmsDatabase.RECIPIENT_ID)) != releaseChannel.toLong();
|
|
}
|
|
|
|
private static class BackupFrameOutputStream extends BackupStream {
|
|
|
|
private final OutputStream outputStream;
|
|
private final Cipher cipher;
|
|
private final Mac mac;
|
|
|
|
private final byte[] cipherKey;
|
|
private final byte[] macKey;
|
|
|
|
private byte[] iv;
|
|
private int counter;
|
|
|
|
private BackupFrameOutputStream(@NonNull OutputStream output, @NonNull String passphrase) throws IOException {
|
|
try {
|
|
byte[] salt = Util.getSecretBytes(32);
|
|
byte[] key = getBackupKey(passphrase, salt);
|
|
byte[] derived = new HKDFv3().deriveSecrets(key, "Backup Export".getBytes(), 64);
|
|
byte[][] split = ByteUtil.split(derived, 32, 32);
|
|
|
|
this.cipherKey = split[0];
|
|
this.macKey = split[1];
|
|
|
|
this.cipher = Cipher.getInstance("AES/CTR/NoPadding");
|
|
this.mac = Mac.getInstance("HmacSHA256");
|
|
this.outputStream = output;
|
|
this.iv = Util.getSecretBytes(16);
|
|
this.counter = Conversions.byteArrayToInt(iv);
|
|
|
|
mac.init(new SecretKeySpec(macKey, "HmacSHA256"));
|
|
|
|
byte[] header = BackupProtos.BackupFrame.newBuilder().setHeader(BackupProtos.Header.newBuilder()
|
|
.setIv(ByteString.copyFrom(iv))
|
|
.setSalt(ByteString.copyFrom(salt)))
|
|
.build().toByteArray();
|
|
|
|
outputStream.write(Conversions.intToByteArray(header.length));
|
|
outputStream.write(header);
|
|
} catch (NoSuchAlgorithmException | NoSuchPaddingException | InvalidKeyException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
|
|
public void write(BackupProtos.SharedPreference preference) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder().setPreference(preference).build());
|
|
}
|
|
|
|
public void write(BackupProtos.KeyValue keyValue) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder().setKeyValue(keyValue).build());
|
|
}
|
|
|
|
public void write(BackupProtos.SqlStatement statement) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder().setStatement(statement).build());
|
|
}
|
|
|
|
public void write(@NonNull String avatarName, @NonNull InputStream in, long size) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder()
|
|
.setAvatar(BackupProtos.Avatar.newBuilder()
|
|
.setRecipientId(avatarName)
|
|
.setLength(Util.toIntExact(size))
|
|
.build())
|
|
.build());
|
|
|
|
if (writeStream(in) != size) {
|
|
throw new IOException("Size mismatch!");
|
|
}
|
|
}
|
|
|
|
public void write(@NonNull AttachmentId attachmentId, @NonNull InputStream in, long size) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder()
|
|
.setAttachment(BackupProtos.Attachment.newBuilder()
|
|
.setRowId(attachmentId.getRowId())
|
|
.setAttachmentId(attachmentId.getUniqueId())
|
|
.setLength(Util.toIntExact(size))
|
|
.build())
|
|
.build());
|
|
|
|
if (writeStream(in) != size) {
|
|
throw new IOException("Size mismatch!");
|
|
}
|
|
}
|
|
|
|
public void writeSticker(long rowId, @NonNull InputStream in, long size) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder()
|
|
.setSticker(BackupProtos.Sticker.newBuilder()
|
|
.setRowId(rowId)
|
|
.setLength(Util.toIntExact(size))
|
|
.build())
|
|
.build());
|
|
|
|
if (writeStream(in) != size) {
|
|
throw new IOException("Size mismatch!");
|
|
}
|
|
}
|
|
|
|
void writeDatabaseVersion(int version) throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder()
|
|
.setVersion(BackupProtos.DatabaseVersion.newBuilder().setVersion(version))
|
|
.build());
|
|
}
|
|
|
|
void writeEnd() throws IOException {
|
|
write(outputStream, BackupProtos.BackupFrame.newBuilder().setEnd(true).build());
|
|
}
|
|
|
|
/**
|
|
* @return The amount of data written from the provided InputStream.
|
|
*/
|
|
private long writeStream(@NonNull InputStream inputStream) throws IOException {
|
|
try {
|
|
Conversions.intToByteArray(iv, 0, counter++);
|
|
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(cipherKey, "AES"), new IvParameterSpec(iv));
|
|
mac.update(iv);
|
|
|
|
byte[] buffer = new byte[8192];
|
|
long total = 0;
|
|
|
|
int read;
|
|
|
|
while ((read = inputStream.read(buffer)) != -1) {
|
|
byte[] ciphertext = cipher.update(buffer, 0, read);
|
|
|
|
if (ciphertext != null) {
|
|
outputStream.write(ciphertext);
|
|
mac.update(ciphertext);
|
|
}
|
|
|
|
total += read;
|
|
}
|
|
|
|
byte[] remainder = cipher.doFinal();
|
|
outputStream.write(remainder);
|
|
mac.update(remainder);
|
|
|
|
byte[] attachmentDigest = mac.doFinal();
|
|
outputStream.write(attachmentDigest, 0, 10);
|
|
|
|
return total;
|
|
} catch (InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
|
|
private void write(@NonNull OutputStream out, @NonNull BackupProtos.BackupFrame frame) throws IOException {
|
|
try {
|
|
Conversions.intToByteArray(iv, 0, counter++);
|
|
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(cipherKey, "AES"), new IvParameterSpec(iv));
|
|
|
|
byte[] frameCiphertext = cipher.doFinal(frame.toByteArray());
|
|
byte[] frameMac = mac.doFinal(frameCiphertext);
|
|
byte[] length = Conversions.intToByteArray(frameCiphertext.length + 10);
|
|
|
|
out.write(length);
|
|
out.write(frameCiphertext);
|
|
out.write(frameMac, 0, 10);
|
|
} catch (InvalidKeyException | InvalidAlgorithmParameterException | IllegalBlockSizeException | BadPaddingException e) {
|
|
throw new AssertionError(e);
|
|
}
|
|
}
|
|
|
|
|
|
public void close() throws IOException {
|
|
outputStream.close();
|
|
}
|
|
}
|
|
|
|
public interface PostProcessor {
|
|
int postProcess(@NonNull Cursor cursor, int count);
|
|
}
|
|
|
|
public interface BackupCancellationSignal {
|
|
boolean isCanceled();
|
|
}
|
|
|
|
public static final class BackupCanceledException extends IOException { }
|
|
}
|