492 lines
18 KiB
Python
492 lines
18 KiB
Python
import os
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import json
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import logging
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from datetime import datetime
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from typing import List
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from twisted.internet import defer
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from torba.basemanager import BaseWalletManager
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from torba.constants import COIN
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from lbryschema.claim import ClaimDict
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from .ledger import MainNetLedger
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from .account import BaseAccount, generate_certificate
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from .transaction import Transaction
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from .database import WalletDatabase
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log = logging.getLogger(__name__)
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class ReservedPoints:
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def __init__(self, identifier, amount):
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self.identifier = identifier
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self.amount = amount
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class BackwardsCompatibleNetwork:
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def __init__(self, manager):
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self.manager = manager
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def get_local_height(self):
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for ledger in self.manager.ledgers.values():
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assert isinstance(ledger, MainNetLedger)
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return ledger.headers.height
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def get_server_height(self):
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return self.get_local_height()
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class LbryWalletManager(BaseWalletManager):
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@property
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def ledger(self) -> MainNetLedger:
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return self.default_account.ledger
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@property
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def db(self) -> WalletDatabase:
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return self.ledger.db
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@property
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def wallet(self):
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return self
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@property
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def network(self):
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return BackwardsCompatibleNetwork(self)
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@property
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def use_encryption(self):
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return self.default_account.serialize_encrypted
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@property
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def is_first_run(self):
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return True
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@property
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def is_wallet_unlocked(self):
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return not self.default_account.encrypted
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def check_locked(self):
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return defer.succeed(self.default_account.encrypted)
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def decrypt_account(self, account):
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assert account.password is not None, "account is not unlocked"
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assert not account.encrypted, "account is not unlocked"
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account.serialize_encrypted = False
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self.save()
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return not account.encrypted and not account.serialize_encrypted
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def encrypt_account(self, password, account):
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assert not account.encrypted, "account is already encrypted"
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account.encrypt(password)
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account.serialize_encrypted = True
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self.save()
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return account.encrypted and account.serialize_encrypted
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def unlock_account(self, password, account):
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assert account.encrypted, "account is not locked"
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account.decrypt(password)
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return not account.encrypted
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def lock_account(self, account):
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assert account.password is not None, "account is already locked"
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assert not account.encrypted and account.serialize_encrypted, "account is not encrypted"
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account.encrypt(account.password)
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return account.encrypted
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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
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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
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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': 2},
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'change': {'gap': 6, 'maximum_uses_per_address': 2}
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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 = "%s.tmp.%s" % (path, 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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@classmethod
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def from_lbrynet_config(cls, settings, db):
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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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}[settings['blockchain_name']]
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ledger_config = {
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'auto_connect': True,
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'default_servers': settings['lbryum_servers'],
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'data_path': settings['lbryum_wallet_dir'],
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'use_keyring': settings['use_keyring'],
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#'db': db
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}
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wallets_directory = os.path.join(settings['lbryum_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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wallet_file_path = os.path.join(wallets_directory, 'default_wallet')
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cls.migrate_lbryum_to_torba(wallet_file_path)
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manager = cls.from_config({
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'ledgers': {ledger_id: ledger_config},
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'wallets': [wallet_file_path]
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})
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if manager.default_account is None:
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ledger = manager.get_or_create_ledger('lbc_mainnet')
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log.info('Wallet at %s is empty, generating a default account.', wallet_file_path)
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manager.default_wallet.generate_account(ledger)
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manager.default_wallet.save()
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return manager
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def get_best_blockhash(self):
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return defer.succeed('')
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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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def get_new_address(self):
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return self.get_unused_address()
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def reserve_points(self, address, amount: int):
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# TODO: check if we have enough to cover amount
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return ReservedPoints(address, amount)
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@defer.inlineCallbacks
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def send_amount_to_address(self, amount: int, destination_address: bytes, account=None):
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account = account or self.default_account
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tx = yield Transaction.pay(amount, destination_address, [account], account)
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yield account.ledger.broadcast(tx)
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return tx
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def send_points_to_address(self, reserved: ReservedPoints, amount: int, account=None):
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destination_address: bytes = reserved.identifier.encode('latin1')
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return self.send_amount_to_address(amount, destination_address, account)
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def get_wallet_info_query_handler_factory(self):
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return LBRYcrdAddressQueryHandlerFactory(self)
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def get_info_exchanger(self):
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return LBRYcrdAddressRequester(self)
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@defer.inlineCallbacks
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def resolve(self, *uris, **kwargs):
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page = kwargs.get('page', 0)
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page_size = kwargs.get('page_size', 10)
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check_cache = kwargs.get('check_cache', False) # TODO: put caching back (was force_refresh parameter)
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ledger = self.default_account.ledger # type: MainNetLedger
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results = yield ledger.resolve(page, page_size, *uris)
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yield self.old_db.save_claims_for_resolve(
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(value for value in results.values() if 'error' not in value))
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defer.returnValue(results)
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def get_claims_for_name(self, name: str):
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return self.ledger.network.get_claims_for_name(name)
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@defer.inlineCallbacks
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def address_is_mine(self, unknown_address, account):
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for my_address in (yield account.get_addresses()):
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if unknown_address == my_address:
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return True
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return False
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def get_transaction(self, txid: str):
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return self.default_account.ledger.get_transaction(txid)
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@staticmethod
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@defer.inlineCallbacks
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def get_history(account: BaseAccount):
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headers = account.ledger.headers
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txs: List[Transaction] = (yield account.get_transactions())
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history = []
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for tx in txs:
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ts = headers[tx.height]['timestamp']
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history.append({
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'txid': tx.id,
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'timestamp': ts,
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'value': tx.net_account_balance/COIN,
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'fee': tx.fee/COIN,
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'date': datetime.fromtimestamp(ts).isoformat(' ')[:-3],
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'confirmations': headers.height - tx.height,
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'claim_info': [{
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'address': txo.get_address(account.ledger),
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'balance_delta': -txo.amount/COIN,
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'amount': txo.amount/COIN,
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'claim_id': txo.claim_id,
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'claim_name': txo.claim_name,
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'nout': txo.position
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} for txo in tx.my_claim_outputs],
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'update_info': [{
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'address': txo.get_address(account.ledger),
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'balance_delta': -txo.amount/COIN,
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'amount': txo.amount/COIN,
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'claim_id': txo.claim_id,
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'claim_name': txo.claim_name,
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'nout': txo.position
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} for txo in tx.my_update_outputs],
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'support_info': [{
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'address': txo.get_address(account.ledger),
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'balance_delta': -txo.amount/COIN,
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'amount': txo.amount/COIN,
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'claim_id': txo.claim_id,
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'claim_name': txo.claim_name,
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'is_tip': False, # TODO: need to add lookup
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'nout': txo.position
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} for txo in tx.my_support_outputs],
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'abandon_info': [{
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'address': txo.get_address(account.ledger),
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'balance_delta': txo.amount/COIN,
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'amount': txo.amount/COIN,
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'claim_id': txo.claim_id,
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'claim_name': txo.claim_name,
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'nout': txo.position
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} for txo in tx.my_abandon_outputs],
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})
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return history
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@staticmethod
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def get_utxos(account: BaseAccount):
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return account.get_unspent_outputs()
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@defer.inlineCallbacks
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def claim_name(self, name, amount, claim_dict, certificate=None, claim_address=None):
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account = self.default_account
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claim = ClaimDict.load_dict(claim_dict)
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if not claim_address:
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claim_address = yield account.receiving.get_or_create_usable_address()
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if certificate:
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claim = claim.sign(
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certificate.private_key, claim_address, certificate.claim_id
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)
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existing_claims = yield account.get_unspent_outputs(include_claims=True, claim_name=name)
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if len(existing_claims) == 0:
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tx = yield Transaction.claim(
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name, claim, amount, claim_address, [account], account
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)
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elif len(existing_claims) == 1:
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tx = yield Transaction.update(
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existing_claims[0], claim, amount, claim_address, [account], account
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)
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else:
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raise NameError("More than one other claim exists with the name '{}'.".format(name))
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yield account.ledger.broadcast(tx)
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yield self.old_db.save_claims([self._old_get_temp_claim_info(
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tx, tx.outputs[0], claim_address, claim_dict, name, amount
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)])
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# TODO: release reserved tx outputs in case anything fails by this point
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defer.returnValue(tx)
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def _old_get_temp_claim_info(self, tx, txo, address, claim_dict, name, bid):
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return {
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"claim_id": txo.claim_id,
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"name": name,
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"amount": bid,
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"address": address,
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"txid": tx.id,
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"nout": txo.position,
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"value": claim_dict,
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"height": -1,
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"claim_sequence": -1,
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}
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@defer.inlineCallbacks
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def support_claim(self, claim_name, claim_id, amount, account):
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holding_address = yield account.receiving.get_or_create_usable_address()
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tx = yield Transaction.support(claim_name, claim_id, amount, holding_address, [account], account)
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yield account.ledger.broadcast(tx)
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return tx
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@defer.inlineCallbacks
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def tip_claim(self, amount, claim_id, account):
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claim_to_tip = yield self.get_claim_by_claim_id(claim_id)
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tx = yield Transaction.support(
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claim_to_tip['name'], claim_id, amount, claim_to_tip['address'], [account], account
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)
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yield account.ledger.broadcast(tx)
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return tx
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@defer.inlineCallbacks
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def abandon_claim(self, claim_id, txid, nout, account):
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claim = yield account.get_claim(claim_id=claim_id, txid=txid, nout=nout)
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if not claim:
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raise Exception('No claim found for the specified claim_id or txid:nout')
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tx = yield Transaction.abandon(claim, [account], account)
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yield account.ledger.broadcast(tx)
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# TODO: release reserved tx outputs in case anything fails by this point
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defer.returnValue(tx)
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@defer.inlineCallbacks
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def claim_new_channel(self, channel_name, amount):
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account = self.default_account
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address = yield account.receiving.get_or_create_usable_address()
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cert, key = generate_certificate()
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tx = yield Transaction.claim(channel_name, cert, amount, address, [account], account)
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yield account.ledger.broadcast(tx)
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account.add_certificate_private_key(tx.outputs[0].ref, key.decode())
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# TODO: release reserved tx outputs in case anything fails by this point
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defer.returnValue(tx)
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def channel_list(self):
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return self.default_account.get_channels()
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def get_certificates(self, name=None, claim_id=None):
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return self.db.get_certificates(name, claim_id, self.accounts, exclude_without_key=True)
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def update_peer_address(self, peer, address):
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pass # TODO: Data payments is disabled
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def get_unused_address_for_peer(self, peer):
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# TODO: Data payments is disabled
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return self.get_unused_address()
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def add_expected_payment(self, peer, amount):
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pass # TODO: Data payments is disabled
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def send_points(self, reserved_points, amount):
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defer.succeed(True) # TODO: Data payments is disabled
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def cancel_point_reservation(self, reserved_points):
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pass # fixme: disabled for now.
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def save(self):
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for wallet in self.wallets:
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wallet.save()
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def get_block(self, block_hash=None, height=None):
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if height is None:
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height = self.ledger.headers.height
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if block_hash is None:
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block_hash = self.ledger.headers.hash(height).decode()
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return self.ledger.network.get_block(block_hash)
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def get_claim_by_claim_id(self, claim_id):
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return self.ledger.get_claim_by_claim_id(claim_id)
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def get_claim_by_outpoint(self, txid, nout):
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return self.ledger.get_claim_by_outpoint(txid, nout)
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class ClientRequest:
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def __init__(self, request_dict, response_identifier=None):
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self.request_dict = request_dict
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self.response_identifier = response_identifier
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class LBRYcrdAddressRequester:
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def __init__(self, wallet):
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self.wallet = wallet
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self._protocols = []
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def send_next_request(self, peer, protocol):
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if not protocol in self._protocols:
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r = ClientRequest({'lbrycrd_address': True}, 'lbrycrd_address')
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d = protocol.add_request(r)
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d.addCallback(self._handle_address_response, peer, r, protocol)
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d.addErrback(self._request_failed, peer)
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self._protocols.append(protocol)
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return defer.succeed(True)
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else:
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return defer.succeed(False)
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def _handle_address_response(self, response_dict, peer, request, protocol):
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if request.response_identifier not in response_dict:
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raise ValueError(
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"Expected {} in response but did not get it".format(request.response_identifier))
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assert protocol in self._protocols, "Responding protocol is not in our list of protocols"
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address = response_dict[request.response_identifier]
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self.wallet.update_peer_address(peer, address)
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def _request_failed(self, error, peer):
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raise Exception(
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"A peer failed to send a valid public key response. Error: {}, peer: {}".format(
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error.getErrorMessage(), str(peer)
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)
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)
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class LBRYcrdAddressQueryHandlerFactory:
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def __init__(self, wallet):
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self.wallet = wallet
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def build_query_handler(self):
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q_h = LBRYcrdAddressQueryHandler(self.wallet)
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return q_h
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def get_primary_query_identifier(self):
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return 'lbrycrd_address'
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def get_description(self):
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return "LBRYcrd Address - an address for receiving payments via LBRYcrd"
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class LBRYcrdAddressQueryHandler:
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def __init__(self, wallet):
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self.wallet = wallet
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self.query_identifiers = ['lbrycrd_address']
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self.address = None
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self.peer = None
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def register_with_request_handler(self, request_handler, peer):
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self.peer = peer
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request_handler.register_query_handler(self, self.query_identifiers)
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def handle_queries(self, queries):
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def create_response(address):
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self.address = address
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fields = {'lbrycrd_address': address}
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return fields
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if self.query_identifiers[0] in queries:
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d = self.wallet.get_unused_address_for_peer(self.peer)
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d.addCallback(create_response)
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return d
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if self.address is None:
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raise Exception("Expected a request for an address, but did not receive one")
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else:
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return defer.succeed({})
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