lbry-sdk/lbry/lbrynet/wallet/manager.py
2019-06-20 22:50:39 -04:00

306 lines
13 KiB
Python

import os
import json
import logging
from binascii import unhexlify
from datetime import datetime
from torba.client.basemanager import BaseWalletManager
from torba.rpc.jsonrpc import CodeMessageError
from lbrynet.wallet.ledger import MainNetLedger
from lbrynet.wallet.account import BaseAccount
from lbrynet.wallet.transaction import Transaction
from lbrynet.wallet.database import WalletDatabase
from lbrynet.wallet.dewies import dewies_to_lbc
log = logging.getLogger(__name__)
class LbryWalletManager(BaseWalletManager):
@property
def ledger(self) -> MainNetLedger:
return self.default_account.ledger
@property
def db(self) -> WalletDatabase:
return self.ledger.db
@property
def use_encryption(self):
return self.default_account.serialize_encrypted
@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()
self.unlock_account(password, account)
return 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': 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 = "{}.tmp.{}".format(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):
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.wallet_dir,
}
wallets_directory = os.path.join(settings.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):
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))))
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()
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 get_transaction(self, txid):
tx = await self.db.get_transaction(txid=txid)
if not tx:
try:
raw = await self.ledger.network.get_transaction(txid)
height = await self.ledger.network.get_transaction_height(txid)
except CodeMessageError as e:
return {'success': False, 'code': e.code, 'message': e.message}
tx = self.ledger.transaction_class(unhexlify(raw))
await self.ledger.maybe_verify_transaction(tx, height)
return tx
@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'] if tx.height > 0 else None
item = {
'txid': tx.id,
'timestamp': ts,
'date': datetime.fromtimestamp(ts).isoformat(' ')[:-3] if tx.height > 0 else None,
'confirmations': (headers.height+1) - tx.height if tx.height > 0 else 0,
'claim_info': [],
'update_info': [],
'support_info': [],
'abandon_info': []
}
is_my_inputs = all([txi.is_my_account for txi in tx.inputs])
if is_my_inputs:
# fees only matter if we are the ones paying them
item['value'] = dewies_to_lbc(tx.net_account_balance+tx.fee)
item['fee'] = dewies_to_lbc(-tx.fee)
else:
# someone else paid the fees
item['value'] = dewies_to_lbc(tx.net_account_balance)
item['fee'] = '0.0'
for txo in tx.my_claim_outputs:
item['claim_info'].append({
'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:
if is_my_inputs: # updating my own claim
previous = None
for txi in tx.inputs:
if txi.txo_ref.txo is not None:
other_txo = txi.txo_ref.txo
if (other_txo.is_claim or other_txo.script.is_support_claim) \
and other_txo.claim_id == txo.claim_id:
previous = other_txo
break
if previous is not None:
item['update_info'].append({
'address': txo.get_address(account.ledger),
'balance_delta': dewies_to_lbc(previous.amount-txo.amount),
'amount': dewies_to_lbc(txo.amount),
'claim_id': txo.claim_id,
'claim_name': txo.claim_name,
'nout': txo.position
})
else: # someone sent us their claim
item['update_info'].append({
'address': txo.get_address(account.ledger),
'balance_delta': dewies_to_lbc(0),
'amount': dewies_to_lbc(txo.amount),
'claim_id': txo.claim_id,
'claim_name': txo.claim_name,
'nout': txo.position
})
for txo in tx.my_support_outputs:
item['support_info'].append({
'address': txo.get_address(account.ledger),
'balance_delta': dewies_to_lbc(txo.amount if not is_my_inputs else -txo.amount),
'amount': dewies_to_lbc(txo.amount),
'claim_id': txo.claim_id,
'claim_name': txo.claim_name,
'is_tip': not is_my_inputs,
'nout': txo.position
})
if is_my_inputs:
for txo in tx.other_support_outputs:
item['support_info'].append({
'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': is_my_inputs,
'nout': txo.position
})
for txo in tx.my_abandon_outputs:
item['abandon_info'].append({
'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
})
history.append(item)
return history
def save(self):
for wallet in self.wallets:
wallet.save()