import os import json import asyncio import logging from binascii import unhexlify from datetime import datetime from typing import Optional from twisted.internet import defer from lbryschema.schema import SECP256k1 from torba.basemanager import BaseWalletManager from lbryschema.claim import ClaimDict from .ledger import MainNetLedger from .account import BaseAccount, generate_certificate from .transaction import Transaction from .database import WalletDatabase from .dewies import dewies_to_lbc log = logging.getLogger(__name__) class ReservedPoints: def __init__(self, identifier, amount): self.identifier = identifier self.amount = amount class BackwardsCompatibleNetwork: def __init__(self, manager): self.manager = manager def get_local_height(self): for ledger in self.manager.ledgers.values(): assert isinstance(ledger, MainNetLedger) return ledger.headers.height def get_server_height(self): return self.get_local_height() class LbryWalletManager(BaseWalletManager): @property def ledger(self) -> MainNetLedger: return self.default_account.ledger @property def db(self) -> WalletDatabase: return self.ledger.db @property def wallet(self): return self @property def network(self): return BackwardsCompatibleNetwork(self) @property def use_encryption(self): return self.default_account.serialize_encrypted @property def is_first_run(self): return True @property def is_wallet_unlocked(self): return not self.default_account.encrypted def check_locked(self): return self.default_account.encrypted def decrypt_account(self, account): assert account.password is not None, "account is not unlocked" assert not account.encrypted, "account is not unlocked" account.serialize_encrypted = False self.save() return not account.encrypted and not account.serialize_encrypted def encrypt_account(self, password, account): assert not account.encrypted, "account is already encrypted" account.encrypt(password) account.serialize_encrypted = True self.save() return account.encrypted and account.serialize_encrypted def unlock_account(self, password, account): assert account.encrypted, "account is not locked" account.decrypt(password) return not account.encrypted def lock_account(self, account): assert account.password is not None, "account is already locked" assert not account.encrypted and account.serialize_encrypted, "account is not encrypted" account.encrypt(account.password) return account.encrypted @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': 2}, 'change': {'gap': 6, 'maximum_uses_per_address': 2} } }] }, 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 = "%s.tmp.%s" % (path, 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, settings, db): ledger_id = { 'lbrycrd_main': 'lbc_mainnet', 'lbrycrd_testnet': 'lbc_testnet', 'lbrycrd_regtest': 'lbc_regtest' }[settings['blockchain_name']] ledger_config = { 'auto_connect': True, 'default_servers': settings['lbryum_servers'], 'data_path': settings['lbryum_wallet_dir'], 'use_keyring': settings['use_keyring'], #'db': db } wallets_directory = os.path.join(settings['lbryum_wallet_dir'], 'wallets') if not os.path.exists(wallets_directory): os.mkdir(wallets_directory) wallet_file_path = os.path.join(wallets_directory, 'default_wallet') receiving_addresses, change_addresses = cls.migrate_lbryum_to_torba(wallet_file_path) manager = cls.from_config({ 'ledgers': {ledger_id: ledger_config}, 'wallets': [wallet_file_path] }) ledger = manager.get_or_create_ledger(ledger_id) if manager.default_account is None: log.info('Wallet at %s is empty, generating a default account.', wallet_file_path) manager.default_wallet.generate_account(ledger) manager.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 _migrate_addresses(self, receiving_addresses: set, change_addresses: set): migrated_receiving = set((await self.default_account.receiving.generate_keys(0, len(receiving_addresses)))) 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)))) def get_best_blockhash(self): return self.ledger.headers.hash(self.ledger.headers.height).decode() def get_unused_address(self): return self.default_account.receiving.get_or_create_usable_address() def get_new_address(self): return self.get_unused_address() def reserve_points(self, address, amount: int): # TODO: check if we have enough to cover amount return ReservedPoints(address, amount) async def send_amount_to_address(self, amount: int, destination_address: bytes, account=None): account = account or self.default_account tx = await Transaction.pay(amount, destination_address, [account], account) await account.ledger.broadcast(tx) return tx async def send_claim_to_address(self, claim_id: str, destination_address: str, amount: Optional[int], account=None): account = account or self.default_account claims = await account.ledger.db.get_utxos(claim_id=claim_id) if not claims: raise NameError("Claim not found: {}".format(claim_id)) tx = await Transaction.update( claims[0], ClaimDict.deserialize(claims[0].script.value['claim']), amount, destination_address.encode(), [account], account ) await self.ledger.broadcast(tx) return tx def send_points_to_address(self, reserved: ReservedPoints, amount: int, account=None): destination_address: bytes = reserved.identifier.encode('latin1') return self.send_amount_to_address(amount, destination_address, account) def get_wallet_info_query_handler_factory(self): return LBRYcrdAddressQueryHandlerFactory(self) def get_info_exchanger(self): return LBRYcrdAddressRequester(self) async def resolve(self, *uris, **kwargs): page = kwargs.get('page', 0) page_size = kwargs.get('page_size', 10) check_cache = kwargs.get('check_cache', False) # TODO: put caching back (was force_refresh parameter) ledger: MainNetLedger = self.default_account.ledger results = await ledger.resolve(page, page_size, *uris) await self.old_db.save_claims_for_resolve( (value for value in results.values() if 'error' not in value) ).asFuture(asyncio.get_event_loop()) return results def get_claims_for_name(self, name: str): return self.ledger.network.get_claims_for_name(name) async def address_is_mine(self, unknown_address, account): match = await self.ledger.db.get_address(address=unknown_address, account=account) if match is not None: return True return False def get_transaction(self, txid: str): return self.default_account.ledger.get_transaction(txid) @staticmethod async def get_history(account: BaseAccount, **constraints): headers = account.ledger.headers txs = await account.get_transactions(**constraints) history = [] for tx in txs: ts = headers[tx.height]['timestamp'] item = { 'txid': tx.id, 'timestamp': ts, 'value': dewies_to_lbc(tx.net_account_balance), 'fee': dewies_to_lbc(tx.fee), 'date': datetime.fromtimestamp(ts).isoformat(' ')[:-3], 'confirmations': headers.height - tx.height, 'claim_info': [{ 'address': txo.get_address(account.ledger), 'balance_delta': dewies_to_lbc(-txo.amount), 'amount': dewies_to_lbc(txo.amount), 'claim_id': txo.claim_id, 'claim_name': txo.claim_name, 'nout': txo.position } for txo in tx.my_claim_outputs], 'update_info': [{ 'address': txo.get_address(account.ledger), 'balance_delta': dewies_to_lbc(-txo.amount), 'amount': dewies_to_lbc(txo.amount), 'claim_id': txo.claim_id, 'claim_name': txo.claim_name, 'nout': txo.position } for txo in tx.my_update_outputs], 'support_info': [{ 'address': txo.get_address(account.ledger), 'balance_delta': dewies_to_lbc(txo.amount), 'amount': dewies_to_lbc(txo.amount), 'claim_id': txo.claim_id, 'claim_name': txo.claim_name, 'is_tip': not txo.is_my_account, 'nout': txo.position } for txo in tx.my_support_outputs], 'abandon_info': [{ 'address': txo.get_address(account.ledger), 'balance_delta': dewies_to_lbc(-txo.amount), 'amount': dewies_to_lbc(txo.amount), 'claim_id': txo.claim_id, 'claim_name': txo.claim_name, 'nout': txo.position } for txo in tx.my_abandon_outputs], } if all([txi.txo_ref.txo is not None for txi in tx.inputs]): item['fee'] = dewies_to_lbc(tx.fee) else: item['fee'] = '0' # can't calculate fee without all input txos history.append(item) return history @staticmethod def get_utxos(account: BaseAccount): return account.get_utxos() async def claim_name(self, name, amount, claim_dict, certificate=None, claim_address=None): account = self.default_account claim = ClaimDict.load_dict(claim_dict) if not claim_address: claim_address = await account.receiving.get_or_create_usable_address() if certificate: claim = claim.sign( certificate.private_key, claim_address, certificate.claim_id, curve=SECP256k1 ) existing_claims = await account.get_claims(claim_name=name) if len(existing_claims) == 0: tx = await Transaction.claim( name, claim, amount, claim_address, [account], account ) elif len(existing_claims) == 1: tx = await Transaction.update( existing_claims[0], claim, amount, claim_address, [account], account ) else: raise NameError("More than one other claim exists with the name '{}'.".format(name)) await account.ledger.broadcast(tx) await self.old_db.save_claims([self._old_get_temp_claim_info( tx, tx.outputs[0], claim_address, claim_dict, name, amount )]).asFuture(asyncio.get_event_loop()) # TODO: release reserved tx outputs in case anything fails by this point return tx def _old_get_temp_claim_info(self, tx, txo, address, claim_dict, name, bid): return { "claim_id": txo.claim_id, "name": name, "amount": bid, "address": address, "txid": tx.id, "nout": txo.position, "value": claim_dict, "height": -1, "claim_sequence": -1, } async def support_claim(self, claim_name, claim_id, amount, account): holding_address = await account.receiving.get_or_create_usable_address() tx = await Transaction.support(claim_name, claim_id, amount, holding_address, [account], account) await account.ledger.broadcast(tx) return tx async def tip_claim(self, amount, claim_id, account): claim_to_tip = await self.get_claim_by_claim_id(claim_id) tx = await Transaction.support( claim_to_tip['name'], claim_id, amount, claim_to_tip['address'], [account], account ) await account.ledger.broadcast(tx) return tx async def abandon_claim(self, claim_id, txid, nout, account): claim = await account.get_claim(claim_id=claim_id, txid=txid, nout=nout) if not claim: raise Exception('No claim found for the specified claim_id or txid:nout') tx = await Transaction.abandon(claim, [account], account) await account.ledger.broadcast(tx) # TODO: release reserved tx outputs in case anything fails by this point return tx async def claim_new_channel(self, channel_name, amount): account = self.default_account address = await account.receiving.get_or_create_usable_address() cert, key = generate_certificate() tx = await Transaction.claim(channel_name, cert, amount, address, [account], account) await account.ledger.broadcast(tx) account.add_certificate_private_key(tx.outputs[0].ref, key.decode()) # TODO: release reserved tx outputs in case anything fails by this point return tx def get_certificates(self, private_key_accounts, exclude_without_key=True, **constraints): return self.db.get_certificates( private_key_accounts=private_key_accounts, exclude_without_key=exclude_without_key, **constraints ) def update_peer_address(self, peer, address): pass # TODO: Data payments is disabled def get_unused_address_for_peer(self, peer): # TODO: Data payments is disabled return self.get_unused_address() def add_expected_payment(self, peer, amount): pass # TODO: Data payments is disabled def send_points(self, reserved_points, amount): defer.succeed(True) # TODO: Data payments is disabled def cancel_point_reservation(self, reserved_points): pass # fixme: disabled for now. def save(self): for wallet in self.wallets: wallet.save() def get_block(self, block_hash=None, height=None): if height is None: height = self.ledger.headers.height if block_hash is None: block_hash = self.ledger.headers.hash(height).decode() return self.ledger.network.get_block(block_hash) def get_claim_by_claim_id(self, claim_id): return self.ledger.get_claim_by_claim_id(claim_id) def get_claim_by_outpoint(self, txid, nout): return self.ledger.get_claim_by_outpoint(txid, nout) class ClientRequest: def __init__(self, request_dict, response_identifier=None): self.request_dict = request_dict self.response_identifier = response_identifier class LBRYcrdAddressRequester: def __init__(self, wallet): self.wallet = wallet self._protocols = [] def send_next_request(self, peer, protocol): if not protocol in self._protocols: r = ClientRequest({'lbrycrd_address': True}, 'lbrycrd_address') d = protocol.add_request(r) d.addCallback(self._handle_address_response, peer, r, protocol) d.addErrback(self._request_failed, peer) self._protocols.append(protocol) return defer.succeed(True) else: return defer.succeed(False) def _handle_address_response(self, response_dict, peer, request, protocol): if request.response_identifier not in response_dict: raise ValueError( "Expected {} in response but did not get it".format(request.response_identifier)) assert protocol in self._protocols, "Responding protocol is not in our list of protocols" address = response_dict[request.response_identifier] self.wallet.update_peer_address(peer, address) def _request_failed(self, error, peer): raise Exception( "A peer failed to send a valid public key response. Error: {}, peer: {}".format( error.getErrorMessage(), str(peer) ) ) class LBRYcrdAddressQueryHandlerFactory: def __init__(self, wallet): self.wallet = wallet def build_query_handler(self): q_h = LBRYcrdAddressQueryHandler(self.wallet) return q_h def get_primary_query_identifier(self): return 'lbrycrd_address' def get_description(self): return "LBRYcrd Address - an address for receiving payments via LBRYcrd" class LBRYcrdAddressQueryHandler: def __init__(self, wallet): self.wallet = wallet self.query_identifiers = ['lbrycrd_address'] self.address = None self.peer = None def register_with_request_handler(self, request_handler, peer): self.peer = peer request_handler.register_query_handler(self, self.query_identifiers) @defer.inlineCallbacks def handle_queries(self, queries): if self.query_identifiers[0] in queries: future = self.wallet.get_unused_address_for_peer(self.peer) address = yield defer.Deferred.fromFuture(asyncio.ensure_future(future)) self.address = address fields = {'lbrycrd_address': address} return fields if self.address is None: raise Exception("Expected a request for an address, but did not receive one") else: return {}