import os import json import typing import logging import asyncio from binascii import unhexlify from decimal import Decimal from typing import List, Type, MutableSequence, MutableMapping, Optional from lbry.error import KeyFeeAboveMaxAllowedError from lbry.conf import Config from .dewies import dewies_to_lbc from .account import Account from .ledger import Ledger, LedgerRegistry from .transaction import Transaction, Output from .database import Database from .wallet import Wallet, WalletStorage, ENCRYPT_ON_DISK from .rpc.jsonrpc import CodeMessageError if typing.TYPE_CHECKING: from lbry.extras.daemon.exchange_rate_manager import ExchangeRateManager log = logging.getLogger(__name__) class WalletManager: def __init__(self, wallets: MutableSequence[Wallet] = None, ledgers: MutableMapping[Type[Ledger], Ledger] = None) -> None: self.wallets = wallets or [] self.ledgers = ledgers or {} self.running = False self.config: Optional[Config] = None @classmethod def from_config(cls, config: dict) -> 'WalletManager': manager = cls() for ledger_id, ledger_config in config.get('ledgers', {}).items(): manager.get_or_create_ledger(ledger_id, ledger_config) for wallet_path in config.get('wallets', []): wallet_storage = WalletStorage(wallet_path) wallet = Wallet.from_storage(wallet_storage, manager) manager.wallets.append(wallet) return manager def get_or_create_ledger(self, ledger_id, ledger_config=None): ledger_class = LedgerRegistry.get_ledger_class(ledger_id) ledger = self.ledgers.get(ledger_class) if ledger is None: ledger = ledger_class(ledger_config or {}) self.ledgers[ledger_class] = ledger return ledger def import_wallet(self, path): storage = WalletStorage(path) wallet = Wallet.from_storage(storage, self) self.wallets.append(wallet) return wallet @property def default_wallet(self): for wallet in self.wallets: return wallet @property def default_account(self): for wallet in self.wallets: return wallet.default_account @property def accounts(self): for wallet in self.wallets: yield from wallet.accounts async def start(self): self.running = True await asyncio.gather(*( l.start() for l in self.ledgers.values() )) async def stop(self): await asyncio.gather(*( l.stop() for l in self.ledgers.values() )) self.running = False def get_wallet_or_default(self, wallet_id: Optional[str]) -> Wallet: if wallet_id is None: return self.default_wallet return self.get_wallet_or_error(wallet_id) def get_wallet_or_error(self, wallet_id: str) -> Wallet: for wallet in self.wallets: if wallet.id == wallet_id: return wallet raise ValueError(f"Couldn't find wallet: {wallet_id}.") @staticmethod def get_balance(wallet): accounts = wallet.accounts if not accounts: return 0 return accounts[0].ledger.db.get_balance(wallet=wallet, accounts=accounts) @property def ledger(self) -> Ledger: return self.default_account.ledger @property def db(self) -> Database: return self.ledger.db def check_locked(self): return self.default_wallet.is_locked @staticmethod def migrate_lbryum_to_torba(path): if not os.path.exists(path): return None, None with open(path, 'r') as f: unmigrated_json = f.read() unmigrated = json.loads(unmigrated_json) # TODO: After several public releases of new torba based wallet, we can delete # this lbryum->torba conversion code and require that users who still # have old structured wallets install one of the earlier releases that # still has the below conversion code. if 'master_public_keys' not in unmigrated: return None, None total = unmigrated.get('addr_history') receiving_addresses, change_addresses = set(), set() for _, unmigrated_account in unmigrated.get('accounts', {}).items(): receiving_addresses.update(map(unhexlify, unmigrated_account.get('receiving', []))) change_addresses.update(map(unhexlify, unmigrated_account.get('change', []))) log.info("Wallet migrator found %s receiving addresses and %s change addresses. %s in total on history.", len(receiving_addresses), len(change_addresses), len(total)) migrated_json = json.dumps({ 'version': 1, 'name': 'My Wallet', 'accounts': [{ 'version': 1, 'name': 'Main Account', 'ledger': 'lbc_mainnet', 'encrypted': unmigrated['use_encryption'], 'seed': unmigrated['seed'], 'seed_version': unmigrated['seed_version'], 'private_key': unmigrated['master_private_keys']['x/'], 'public_key': unmigrated['master_public_keys']['x/'], 'certificates': unmigrated.get('claim_certificates', {}), 'address_generator': { 'name': 'deterministic-chain', 'receiving': {'gap': 20, 'maximum_uses_per_address': 1}, 'change': {'gap': 6, 'maximum_uses_per_address': 1} } }] }, indent=4, sort_keys=True) mode = os.stat(path).st_mode i = 1 backup_path_template = os.path.join(os.path.dirname(path), "old_lbryum_wallet") + "_%i" while os.path.isfile(backup_path_template % i): i += 1 os.rename(path, backup_path_template % i) temp_path = f"{path}.tmp.{os.getpid()}" with open(temp_path, "w") as f: f.write(migrated_json) f.flush() os.fsync(f.fileno()) os.rename(temp_path, path) os.chmod(path, mode) return receiving_addresses, change_addresses @classmethod async def from_lbrynet_config(cls, config: Config): ledger_id = { 'lbrycrd_main': 'lbc_mainnet', 'lbrycrd_testnet': 'lbc_testnet', 'lbrycrd_regtest': 'lbc_regtest' }[config.blockchain_name] ledger_config = { 'auto_connect': True, 'default_servers': config.lbryum_servers, 'known_hubs': config.known_hubs, 'data_path': config.wallet_dir, 'tx_cache_size': config.transaction_cache_size } wallets_directory = os.path.join(config.wallet_dir, 'wallets') if not os.path.exists(wallets_directory): os.mkdir(wallets_directory) receiving_addresses, change_addresses = cls.migrate_lbryum_to_torba( os.path.join(wallets_directory, 'default_wallet') ) manager = cls.from_config({ 'ledgers': {ledger_id: ledger_config}, 'wallets': [ os.path.join(wallets_directory, wallet_file) for wallet_file in config.wallets ] }) manager.config = config ledger = manager.get_or_create_ledger(ledger_id) ledger.coin_selection_strategy = config.coin_selection_strategy default_wallet = manager.default_wallet if default_wallet.default_account is None: log.info('Wallet at %s is empty, generating a default account.', default_wallet.id) default_wallet.generate_account(ledger) default_wallet.save() if default_wallet.is_locked and default_wallet.preferences.get(ENCRYPT_ON_DISK) is None: default_wallet.preferences[ENCRYPT_ON_DISK] = True default_wallet.save() if receiving_addresses or change_addresses: if not os.path.exists(ledger.path): os.mkdir(ledger.path) await ledger.db.open() try: await manager._migrate_addresses(receiving_addresses, change_addresses) finally: await ledger.db.close() return manager async def reset(self): self.ledger.config = { 'auto_connect': True, 'default_servers': self.config.lbryum_servers, 'known_hubs': self.config.known_hubs, 'data_path': self.config.wallet_dir, } await self.ledger.stop() await self.ledger.start() async def _migrate_addresses(self, receiving_addresses: set, change_addresses: set): async with self.default_account.receiving.address_generator_lock: migrated_receiving = set(await self.default_account.receiving._generate_keys(0, len(receiving_addresses))) async with self.default_account.change.address_generator_lock: migrated_change = set(await self.default_account.change._generate_keys(0, len(change_addresses))) receiving_addresses = set(map(self.default_account.ledger.public_key_to_address, receiving_addresses)) change_addresses = set(map(self.default_account.ledger.public_key_to_address, change_addresses)) if not any(change_addresses.difference(migrated_change)): log.info("Successfully migrated %s change addresses.", len(change_addresses)) else: log.warning("Failed to migrate %s change addresses!", len(set(change_addresses).difference(set(migrated_change)))) if not any(receiving_addresses.difference(migrated_receiving)): log.info("Successfully migrated %s receiving addresses.", len(receiving_addresses)) else: log.warning("Failed to migrate %s receiving addresses!", len(set(receiving_addresses).difference(set(migrated_receiving)))) async def get_best_blockhash(self): if len(self.ledger.headers) <= 0: return self.ledger.genesis_hash return (await self.ledger.headers.hash(self.ledger.headers.height)).decode() def get_unused_address(self): return self.default_account.receiving.get_or_create_usable_address() async def get_transaction(self, txid: str): tx = await self.db.get_transaction(txid=txid) if tx: return tx try: raw, merkle = await self.ledger.network.get_transaction_and_merkle(txid) except CodeMessageError as e: if 'No such mempool or blockchain transaction.' in e.message: return {'success': False, 'code': 404, 'message': 'transaction not found'} return {'success': False, 'code': e.code, 'message': e.message} height = merkle.get('block_height') tx = Transaction(unhexlify(raw), height=height) if height and height > 0: await self.ledger.maybe_verify_transaction(tx, height, merkle) return tx async def create_purchase_transaction( self, accounts: List[Account], txo: Output, exchange: 'ExchangeRateManager', override_max_key_fee=False): fee = txo.claim.stream.fee fee_amount = exchange.to_dewies(fee.currency, fee.amount) if not override_max_key_fee and self.config.max_key_fee: max_fee = self.config.max_key_fee max_fee_amount = exchange.to_dewies(max_fee['currency'], Decimal(max_fee['amount'])) if max_fee_amount and fee_amount > max_fee_amount: error_fee = f"{dewies_to_lbc(fee_amount)} LBC" if fee.currency != 'LBC': error_fee += f" ({fee.amount} {fee.currency})" error_max_fee = f"{dewies_to_lbc(max_fee_amount)} LBC" if max_fee['currency'] != 'LBC': error_max_fee += f" ({max_fee['amount']} {max_fee['currency']})" raise KeyFeeAboveMaxAllowedError( f"Purchase price of {error_fee} exceeds maximum " f"configured price of {error_max_fee}." ) fee_address = fee.address or txo.get_address(self.ledger) return await Transaction.purchase( txo.claim_id, fee_amount, fee_address, accounts, accounts[0] ) async def broadcast_or_release(self, tx, blocking=False): try: await self.ledger.broadcast(tx) except: await self.ledger.release_tx(tx) raise if blocking: await self.ledger.wait(tx, timeout=None)