Examples with Wallet org.bitcoinj.wallet.Wallet used on opensource projects

Example 1 with Wallet

use of org.bitcoinj.wallet.Wallet in project bitcoin-wallet by bitcoin-wallet.

the class BlockchainService method onCreate.

@Override
public void onCreate() {
    serviceCreatedAt = System.currentTimeMillis();
    log.debug(".onCreate()");
    super.onCreate();
    nm = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    final PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, getClass().getName());
    application = (WalletApplication) getApplication();
    config = application.getConfiguration();
    final Wallet wallet = application.getWallet();
    peerConnectivityListener = new PeerConnectivityListener();
    broadcastPeerState(0);
    blockChainFile = new File(getDir("blockstore", Context.MODE_PRIVATE), Constants.Files.BLOCKCHAIN_FILENAME);
    final boolean blockChainFileExists = blockChainFile.exists();
    if (!blockChainFileExists) {
        log.info("blockchain does not exist, resetting wallet");
        wallet.reset();
    }
    try {
        blockStore = new SPVBlockStore(Constants.NETWORK_PARAMETERS, blockChainFile);
        // detect corruptions as early as possible
        blockStore.getChainHead();
        final long earliestKeyCreationTime = wallet.getEarliestKeyCreationTime();
        if (!blockChainFileExists && earliestKeyCreationTime > 0) {
            try {
                final Stopwatch watch = Stopwatch.createStarted();
                final InputStream checkpointsInputStream = getAssets().open(Constants.Files.CHECKPOINTS_FILENAME);
                CheckpointManager.checkpoint(Constants.NETWORK_PARAMETERS, checkpointsInputStream, blockStore, earliestKeyCreationTime);
                watch.stop();
                log.info("checkpoints loaded from '{}', took {}", Constants.Files.CHECKPOINTS_FILENAME, watch);
            } catch (final IOException x) {
                log.error("problem reading checkpoints, continuing without", x);
            }
        }
    } catch (final BlockStoreException x) {
        blockChainFile.delete();
        final String msg = "blockstore cannot be created";
        log.error(msg, x);
        throw new Error(msg, x);
    }
    try {
        blockChain = new BlockChain(Constants.NETWORK_PARAMETERS, wallet, blockStore);
    } catch (final BlockStoreException x) {
        throw new Error("blockchain cannot be created", x);
    }
    final IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction(ConnectivityManager.CONNECTIVITY_ACTION);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_LOW);
    intentFilter.addAction(Intent.ACTION_DEVICE_STORAGE_OK);
    // implicitly start PeerGroup
    registerReceiver(connectivityReceiver, intentFilter);
    application.getWallet().addCoinsReceivedEventListener(Threading.SAME_THREAD, walletEventListener);
    application.getWallet().addCoinsSentEventListener(Threading.SAME_THREAD, walletEventListener);
    application.getWallet().addChangeEventListener(Threading.SAME_THREAD, walletEventListener);
    registerReceiver(tickReceiver, new IntentFilter(Intent.ACTION_TIME_TICK));
}

Example 2 with Wallet

use of org.bitcoinj.wallet.Wallet in project bitcoin-wallet by bitcoin-wallet.

the class UpgradeWalletService method onHandleIntent.

@Override
protected void onHandleIntent(final Intent intent) {
    org.bitcoinj.core.Context.propagate(Constants.CONTEXT);
    final Wallet wallet = application.getWallet();
    if (wallet.isDeterministicUpgradeRequired()) {
        log.info("detected non-HD wallet, upgrading");
        // upgrade wallet to HD
        wallet.upgradeToDeterministic(null);
        // let other service pre-generate look-ahead keys
        BlockchainService.start(this, false);
    }
    maybeUpgradeToSecureChain(wallet);
}

Example 3 with Wallet

use of org.bitcoinj.wallet.Wallet in project bitcoin-wallet by bitcoin-wallet.

the class WalletApplication method loadWalletFromProtobuf.

private void loadWalletFromProtobuf() {
    if (walletFile.exists()) {
        try (final FileInputStream walletStream = new FileInputStream(walletFile)) {
            final Stopwatch watch = Stopwatch.createStarted();
            wallet = new WalletProtobufSerializer().readWallet(walletStream);
            watch.stop();
            if (!wallet.getParams().equals(Constants.NETWORK_PARAMETERS))
                throw new UnreadableWalletException("bad wallet network parameters: " + wallet.getParams().getId());
            log.info("wallet loaded from: '{}', took {}", walletFile, watch);
        } catch (final IOException | UnreadableWalletException x) {
            log.error("problem loading wallet", x);
            Toast.makeText(WalletApplication.this, x.getClass().getName(), Toast.LENGTH_LONG).show();
            wallet = restoreWalletFromBackup();
        }
        if (!wallet.isConsistent()) {
            Toast.makeText(this, "inconsistent wallet: " + walletFile, Toast.LENGTH_LONG).show();
            wallet = restoreWalletFromBackup();
        }
        if (!wallet.getParams().equals(Constants.NETWORK_PARAMETERS))
            throw new Error("bad wallet network parameters: " + wallet.getParams().getId());
    } else {
        final Stopwatch watch = Stopwatch.createStarted();
        wallet = new Wallet(Constants.NETWORK_PARAMETERS);
        saveWallet();
        backupWallet();
        watch.stop();
        log.info("fresh wallet created, took {}", watch);
        config.armBackupReminder();
    }
}

Example 4 with Wallet

use of org.bitcoinj.wallet.Wallet in project bitcoin-wallet by bitcoin-wallet.

the class WalletApplication method restoreWalletFromBackup.

private Wallet restoreWalletFromBackup() {
    try (final InputStream is = openFileInput(Constants.Files.WALLET_KEY_BACKUP_PROTOBUF)) {
        final Wallet wallet = new WalletProtobufSerializer().readWallet(is, true, null);
        if (!wallet.isConsistent())
            throw new Error("inconsistent backup");
        BlockchainService.resetBlockchain(this);
        Toast.makeText(this, R.string.toast_wallet_reset, Toast.LENGTH_LONG).show();
        log.info("wallet restored from backup: '" + Constants.Files.WALLET_KEY_BACKUP_PROTOBUF + "'");
        return wallet;
    } catch (final IOException | UnreadableWalletException x) {
        throw new Error("cannot read backup", x);
    }
}

Example 5 with Wallet

use of org.bitcoinj.wallet.Wallet in project bitcoin-wallet by bitcoin-wallet.

the class WalletApplication method backupWallet.

public void backupWallet() {
    final Stopwatch watch = Stopwatch.createStarted();
    final Protos.Wallet.Builder builder = new WalletProtobufSerializer().walletToProto(wallet).toBuilder();
    // strip redundant
    builder.clearTransaction();
    builder.clearLastSeenBlockHash();
    builder.setLastSeenBlockHeight(-1);
    builder.clearLastSeenBlockTimeSecs();
    final Protos.Wallet walletProto = builder.build();
    try (final OutputStream os = openFileOutput(Constants.Files.WALLET_KEY_BACKUP_PROTOBUF, Context.MODE_PRIVATE)) {
        walletProto.writeTo(os);
        watch.stop();
        log.info("wallet backed up to: '{}', took {}", Constants.Files.WALLET_KEY_BACKUP_PROTOBUF, watch);
    } catch (final IOException x) {
        log.error("problem writing wallet backup", x);
    }
}