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