890 lines
36 KiB
Python
890 lines
36 KiB
Python
import os
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import json
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import zlib
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import asyncio
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import logging
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from typing import Awaitable, Callable, List, Tuple, Optional, Iterable, Union
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from hashlib import sha256
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from operator import attrgetter
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from decimal import Decimal
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from lbry.db import Database, SPENDABLE_TYPE_CODES
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from lbry.blockchain.ledger import Ledger
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from lbry.constants import COIN, NULL_HASH32
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from lbry.blockchain.transaction import Transaction, Input, Output
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from lbry.blockchain.dewies import dewies_to_lbc
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from lbry.crypto.crypt import better_aes_encrypt, better_aes_decrypt
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from lbry.crypto.bip32 import PubKey, PrivateKey
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from lbry.schema.claim import Claim
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from lbry.schema.purchase import Purchase
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from lbry.error import InsufficientFundsError, KeyFeeAboveMaxAllowedError
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from lbry.stream.managed_stream import ManagedStream
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from .account import Account, SingleKey, HierarchicalDeterministic
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from .coinselection import CoinSelector, OutputEffectiveAmountEstimator
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from .storage import WalletStorage
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from .preferences import TimestampedPreferences
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log = logging.getLogger(__name__)
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ENCRYPT_ON_DISK = 'encrypt-on-disk'
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class Wallet:
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""" The primary role of Wallet is to encapsulate a collection
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of accounts (seed/private keys) and the spending rules / settings
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for the coins attached to those accounts. Wallets are represented
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by physical files on the filesystem.
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"""
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def __init__(self, ledger: Ledger, db: Database, name: str, storage: WalletStorage, preferences: dict):
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self.ledger = ledger
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self.db = db
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self.name = name
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self.storage = storage
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self.preferences = TimestampedPreferences(preferences or {})
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self.encryption_password: Optional[str] = None
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self.id = self.get_id()
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self.utxo_lock = asyncio.Lock()
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self.accounts = AccountListManager(self)
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self.claims = ClaimListManager(self)
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self.streams = StreamListManager(self)
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self.channels = ChannelListManager(self)
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self.collections = CollectionListManager(self)
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self.purchases = PurchaseListManager(self)
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self.supports = SupportListManager(self)
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def get_id(self):
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return os.path.basename(self.storage.path) if self.storage.path else self.name
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@classmethod
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async def create(
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cls, ledger: Ledger, db: Database, path: str, name: str,
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create_account=False, language='en', single_key=False):
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wallet = cls(ledger, db, name, WalletStorage(path), {})
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if create_account:
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await wallet.accounts.generate(language=language, address_generator={
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'name': SingleKey.name if single_key else HierarchicalDeterministic.name
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})
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await wallet.save()
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return wallet
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@classmethod
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async def from_path(cls, ledger: Ledger, db: Database, path: str):
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return await cls.from_storage(ledger, db, WalletStorage(path))
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@classmethod
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async def from_storage(cls, ledger: Ledger, db: Database, storage: WalletStorage) -> 'Wallet':
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json_dict = await storage.read()
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if 'ledger' in json_dict and json_dict['ledger'] != ledger.get_id():
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raise ValueError(
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f"Using ledger {ledger.get_id()} but wallet is {json_dict['ledger']}."
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)
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wallet = cls(
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ledger, db,
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name=json_dict.get('name', 'Wallet'),
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storage=storage,
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preferences=json_dict.get('preferences', {}),
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)
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for account_dict in json_dict.get('accounts', []):
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await wallet.accounts.add_from_dict(account_dict)
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return wallet
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def to_dict(self, encrypt_password: str = None):
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return {
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'version': WalletStorage.VERSION,
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'ledger': self.ledger.get_id(),
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'name': self.name,
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'preferences': self.preferences.data,
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'accounts': [a.to_dict(encrypt_password) for a in self.accounts]
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}
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async def save(self):
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if self.preferences.get(ENCRYPT_ON_DISK, False):
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if self.encryption_password is not None:
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return await self.storage.write(self.to_dict(encrypt_password=self.encryption_password))
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elif not self.is_locked:
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log.warning(
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"Disk encryption requested but no password available for encryption. "
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"Saving wallet in an unencrypted state."
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)
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return await self.storage.write(self.to_dict())
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@property
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def hash(self) -> bytes:
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h = sha256()
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if self.preferences.get(ENCRYPT_ON_DISK, False):
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assert self.encryption_password is not None, \
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"Encryption is enabled but no password is available, cannot generate hash."
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h.update(self.encryption_password.encode())
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h.update(self.preferences.hash)
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for account in sorted(self.accounts, key=attrgetter('id')):
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h.update(account.hash)
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return h.digest()
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def pack(self, password):
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assert not self.is_locked, "Cannot pack a wallet with locked/encrypted accounts."
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new_data = json.dumps(self.to_dict())
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new_data_compressed = zlib.compress(new_data.encode())
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return better_aes_encrypt(password, new_data_compressed)
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@classmethod
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def unpack(cls, password, encrypted):
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decrypted = better_aes_decrypt(password, encrypted)
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decompressed = zlib.decompress(decrypted)
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return json.loads(decompressed)
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async def merge(self, password: str, data: str) -> List[Account]:
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assert not self.is_locked, "Cannot sync apply on a locked wallet."
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added_accounts = []
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decrypted_data = self.unpack(password, data)
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self.preferences.merge(decrypted_data.get('preferences', {}))
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for account_dict in decrypted_data['accounts']:
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_, _, pubkey = await Account.keys_from_dict(self.ledger, account_dict)
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account_id = pubkey.address
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local_match = None
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for local_account in self.accounts:
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if account_id == local_account.id:
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local_match = local_account
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break
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if local_match is not None:
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local_match.merge(account_dict)
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else:
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added_accounts.append(
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self.accounts.add_from_dict(account_dict)
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)
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return added_accounts
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@property
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def is_locked(self) -> bool:
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for account in self.accounts:
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if account.encrypted:
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return True
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return False
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def unlock(self, password):
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for account in self.accounts:
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if account.encrypted:
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if not account.decrypt(password):
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return False
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self.encryption_password = password
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return True
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def lock(self):
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assert self.encryption_password is not None, "Cannot lock an unencrypted wallet, encrypt first."
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for account in self.accounts:
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if not account.encrypted:
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account.encrypt(self.encryption_password)
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return True
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@property
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def is_encrypted(self) -> bool:
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return self.is_locked or self.preferences.get(ENCRYPT_ON_DISK, False)
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async def decrypt(self):
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assert not self.is_locked, "Cannot decrypt a locked wallet, unlock first."
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self.preferences[ENCRYPT_ON_DISK] = False
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await self.save()
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return True
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async def encrypt(self, password):
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assert not self.is_locked, "Cannot re-encrypt a locked wallet, unlock first."
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assert password, "Cannot encrypt with blank password."
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self.encryption_password = password
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self.preferences[ENCRYPT_ON_DISK] = True
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await self.save()
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return True
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@property
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def has_accounts(self):
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return len(self.accounts) > 0
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async def _get_account_and_address_info_for_address(self, address):
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match = await self.db.get_address(accounts=self.accounts, address=address)
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if match:
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for account in self.accounts:
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if match['account'] == account.public_key.address:
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return account, match
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async def get_private_key_for_address(self, address) -> Optional[PrivateKey]:
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match = await self._get_account_and_address_info_for_address(address)
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if match:
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account, address_info = match
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return account.get_private_key(address_info['chain'], address_info['pubkey'].n)
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return None
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async def get_public_key_for_address(self, address) -> Optional[PubKey]:
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match = await self._get_account_and_address_info_for_address(address)
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if match:
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_, address_info = match
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return address_info['pubkey']
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return None
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async def get_account_for_address(self, address):
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match = await self._get_account_and_address_info_for_address(address)
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if match:
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return match[0]
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async def save_max_gap(self):
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gap_changed = False
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for account in self.accounts:
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if await account.save_max_gap():
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gap_changed = True
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if gap_changed:
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await self.save()
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async def get_effective_amount_estimators(self, funding_accounts: Iterable[Account]):
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estimators = []
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utxos = await self.db.get_utxos(
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accounts=funding_accounts,
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txo_type__in=SPENDABLE_TYPE_CODES
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)
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for utxo in utxos[0]:
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estimators.append(OutputEffectiveAmountEstimator(self.ledger, utxo))
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return estimators
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async def get_spendable_utxos(self, amount: int, funding_accounts: Iterable[Account]):
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async with self.utxo_lock:
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txos = await self.get_effective_amount_estimators(funding_accounts)
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fee = Output.pay_pubkey_hash(COIN, NULL_HASH32).get_fee(self.ledger)
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selector = CoinSelector(amount, fee)
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spendables = selector.select(txos, self.ledger.coin_selection_strategy)
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if spendables:
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await self.db.reserve_outputs(s.txo for s in spendables)
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return spendables
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async def list_transactions(self, **constraints):
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return txs_to_dict(await self.db.get_transactions(
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include_is_my_output=True, include_is_spent=True,
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**constraints
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), self.ledger)
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async def create_transaction(
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self, inputs: Iterable[Input], outputs: Iterable[Output],
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funding_accounts: Iterable[Account], change_account: Account):
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""" Find optimal set of inputs when only outputs are provided; add change
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outputs if only inputs are provided or if inputs are greater than outputs. """
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tx = Transaction() \
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.add_inputs(inputs) \
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.add_outputs(outputs)
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# value of the outputs plus associated fees
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cost = (
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tx.get_base_fee(self.ledger) +
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tx.get_total_output_sum(self.ledger)
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)
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# value of the inputs less the cost to spend those inputs
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payment = tx.get_effective_input_sum(self.ledger)
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try:
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for _ in range(5):
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if payment < cost:
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deficit = cost - payment
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spendables = await self.get_spendable_utxos(deficit, funding_accounts)
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if not spendables:
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raise InsufficientFundsError()
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payment += sum(s.effective_amount for s in spendables)
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tx.add_inputs(s.txi for s in spendables)
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cost_of_change = (
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tx.get_base_fee(self.ledger) +
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Output.pay_pubkey_hash(COIN, NULL_HASH32).get_fee(self.ledger)
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)
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if payment > cost:
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change = payment - cost
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if change > cost_of_change:
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change_address = await change_account.change.get_or_create_usable_address()
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change_hash160 = change_account.ledger.address_to_hash160(change_address)
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change_amount = change - cost_of_change
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change_output = Output.pay_pubkey_hash(change_amount, change_hash160)
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change_output.is_internal_transfer = True
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tx.add_outputs([Output.pay_pubkey_hash(change_amount, change_hash160)])
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if tx._outputs:
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break
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# this condition and the outer range(5) loop cover an edge case
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# whereby a single input is just enough to cover the fee and
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# has some change left over, but the change left over is less
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# than the cost_of_change: thus the input is completely
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# consumed and no output is added, which is an invalid tx.
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# to be able to spend this input we must increase the cost
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# of the TX and run through the balance algorithm a second time
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# adding an extra input and change output, making tx valid.
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# we do this 5 times in case the other UTXOs added are also
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# less than the fee, after 5 attempts we give up and go home
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cost += cost_of_change + 1
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except Exception as e:
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await self.db.release_tx(tx)
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raise e
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return tx
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async def sign(self, tx):
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for i, txi in enumerate(tx._inputs):
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assert txi.script is not None
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assert txi.txo_ref.txo is not None
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txo_script = txi.txo_ref.txo.script
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if txo_script.is_pay_pubkey_hash:
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address = self.ledger.hash160_to_address(txo_script.values['pubkey_hash'])
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private_key = await self.get_private_key_for_address(address)
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assert private_key is not None, 'Cannot find private key for signing output.'
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serialized = tx._serialize_for_signature(i)
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txi.script.values['signature'] = \
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private_key.sign(serialized) + bytes((tx.signature_hash_type(1),))
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txi.script.values['pubkey'] = private_key.public_key.pubkey_bytes
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txi.script.generate()
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else:
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raise NotImplementedError("Don't know how to spend this output.")
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tx._reset()
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async def pay(self, amount: int, address: bytes, funding_accounts: List[Account], change_account: Account):
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output = Output.pay_pubkey_hash(amount, self.ledger.address_to_hash160(address))
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return await self.create_transaction([], [output], funding_accounts, change_account)
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async def _report_state(self):
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try:
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for account in self.accounts:
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balance = dewies_to_lbc(await account.get_balance(include_claims=True))
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_, channel_count = await account.get_channels(limit=1)
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claim_count = await account.get_claim_count()
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if isinstance(account.receiving, SingleKey):
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log.info("Loaded single key account %s with %s LBC. "
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"%d channels, %d certificates and %d claims",
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account.id, balance, channel_count, len(account.channel_keys), claim_count)
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else:
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total_receiving = len(await account.receiving.get_addresses())
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total_change = len(await account.change.get_addresses())
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log.info("Loaded account %s with %s LBC, %d receiving addresses (gap: %d), "
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"%d change addresses (gap: %d), %d channels, %d certificates and %d claims. ",
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account.id, balance, total_receiving, account.receiving.gap, total_change,
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account.change.gap, channel_count, len(account.channel_keys), claim_count)
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except Exception as err:
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if isinstance(err, asyncio.CancelledError): # TODO: remove when updated to 3.8
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raise
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log.exception(
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'Failed to display wallet state, please file issue '
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'for this bug along with the traceback you see below:')
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async def verify_duplicate(self, name: str, allow_duplicate: bool):
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if not allow_duplicate:
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claims, _ = await self.claims.list(claim_name=name)
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if len(claims) > 0:
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raise Exception(
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f"You already have a claim published under the name '{name}'. "
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f"Use --allow-duplicate-name flag to override."
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)
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|
|
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class AccountListManager:
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__slots__ = 'wallet', '_accounts'
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|
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def __init__(self, wallet: Wallet):
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self.wallet = wallet
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self._accounts: List[Account] = []
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def __len__(self):
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return self._accounts.__len__()
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|
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def __iter__(self):
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return self._accounts.__iter__()
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def __getitem__(self, account_id: str) -> Account:
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for account in self:
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if account.id == account_id:
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return account
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raise ValueError(f"Couldn't find account: {account_id}.")
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|
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@property
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def default(self) -> Optional[Account]:
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for account in self:
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return account
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|
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async def generate(self, name: str = None, language: str = 'en', address_generator: dict = None) -> Account:
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account = await Account.generate(
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self.wallet.ledger, self.wallet.db, name, language, address_generator
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)
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self._accounts.append(account)
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return account
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|
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async def add_from_dict(self, account_dict: dict) -> Account:
|
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account = await Account.from_dict(self.wallet.ledger, self.wallet.db, account_dict)
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self._accounts.append(account)
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return account
|
|
|
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async def remove(self, account_id: str) -> Account:
|
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account = self[account_id]
|
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self._accounts.remove(account)
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await self.wallet.save()
|
|
return account
|
|
|
|
def get_or_none(self, account_id: str) -> Optional[Account]:
|
|
if account_id is not None:
|
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return self[account_id]
|
|
|
|
def get_or_default(self, account_id: str) -> Optional[Account]:
|
|
if account_id is None:
|
|
return self.default
|
|
return self[account_id]
|
|
|
|
def get_or_all(self, account_ids: Union[List[str], str]) -> List[Account]:
|
|
if account_ids and isinstance(account_ids, str):
|
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account_ids = [account_ids]
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return [self[account_id] for account_id in account_ids] if account_ids else self._accounts
|
|
|
|
async def get_account_details(self, **kwargs):
|
|
accounts = []
|
|
for i, account in enumerate(self._accounts):
|
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details = await account.get_details(**kwargs)
|
|
details['is_default'] = i == 0
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accounts.append(details)
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return accounts
|
|
|
|
|
|
class BaseListManager:
|
|
__slots__ = 'wallet',
|
|
|
|
def __init__(self, wallet: Wallet):
|
|
self.wallet = wallet
|
|
|
|
async def create(self, **kwargs) -> Transaction:
|
|
raise NotImplementedError
|
|
|
|
async def delete(self, **constraints) -> Transaction:
|
|
raise NotImplementedError
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
raise NotImplementedError
|
|
|
|
async def get(self, **constraints) -> Output:
|
|
raise NotImplementedError
|
|
|
|
async def get_or_none(self, **constraints) -> Optional[Output]:
|
|
raise NotImplementedError
|
|
|
|
|
|
class ClaimListManager(BaseListManager):
|
|
name = 'claim'
|
|
__slots__ = ()
|
|
|
|
async def _create(
|
|
self, name: str, claim: Claim, amount: int, holding_address: str,
|
|
funding_accounts: List[Account], change_account: Account,
|
|
signing_channel: Output = None) -> Transaction:
|
|
txo = Output.pay_claim_name_pubkey_hash(
|
|
amount, name, claim, self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
if signing_channel is not None:
|
|
txo.sign(signing_channel, b'placeholder txid:nout')
|
|
tx = await self.wallet.create_transaction(
|
|
[], [txo], funding_accounts, change_account
|
|
)
|
|
return tx
|
|
|
|
async def create(
|
|
self, name: str, claim: Claim, amount: int, holding_address: str,
|
|
funding_accounts: List[Account], change_account: Account,
|
|
signing_channel: Output = None) -> Transaction:
|
|
tx = await self._create(
|
|
name, claim, amount, holding_address,
|
|
funding_accounts, change_account,
|
|
signing_channel
|
|
)
|
|
txo = tx.outputs[0]
|
|
if signing_channel is not None:
|
|
txo.sign(signing_channel)
|
|
await self.wallet.sign(tx)
|
|
return tx
|
|
|
|
async def update(
|
|
self, previous_claim: Output, claim: Claim, amount: int, holding_address: str,
|
|
funding_accounts: List[Account], change_account: Account,
|
|
signing_channel: Output = None) -> Transaction:
|
|
updated_claim = Output.pay_update_claim_pubkey_hash(
|
|
amount, previous_claim.claim_name, previous_claim.claim_id,
|
|
claim, self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
if signing_channel is not None:
|
|
updated_claim.sign(signing_channel, b'placeholder txid:nout')
|
|
else:
|
|
updated_claim.clear_signature()
|
|
return await self.wallet.create_transaction(
|
|
[Input.spend(previous_claim)], [updated_claim], funding_accounts, change_account, sign=False
|
|
)
|
|
|
|
async def delete(self, claim_id=None, txid=None, nout=None):
|
|
claim = await self.get(claim_id=claim_id, txid=txid, nout=nout)
|
|
return await self.wallet.create_transaction(
|
|
[Input.spend(claim)], [], self.wallet._accounts, self.wallet._accounts[0]
|
|
)
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_claims(wallet=self.wallet, **constraints)
|
|
|
|
async def get(self, claim_id=None, claim_name=None, txid=None, nout=None) -> Output:
|
|
if txid is not None and nout is not None:
|
|
key, value, constraints = 'txid:nout', f'{txid}:{nout}', {'tx_hash': '', 'position': nout}
|
|
elif claim_id is not None:
|
|
key, value, constraints = 'id', claim_id, {'claim_id': claim_id}
|
|
elif claim_name is not None:
|
|
key, value, constraints = 'name', claim_name, {'claim_name': claim_name}
|
|
else:
|
|
raise ValueError(f"Couldn't find {self.name} because an {self.name}_id or name was not provided.")
|
|
claims, _ = await self.list(**constraints)
|
|
if len(claims) == 1:
|
|
return claims[0]
|
|
elif len(claims) > 1:
|
|
raise ValueError(
|
|
f"Multiple {self.name}s found with {key} '{value}', "
|
|
f"pass a {self.name}_id to narrow it down."
|
|
)
|
|
raise ValueError(f"Couldn't find {self.name} with {key} '{value}'.")
|
|
|
|
async def get_or_none(self, claim_id=None, claim_name=None, txid=None, nout=None) -> Optional[Output]:
|
|
if any((claim_id, claim_name, all((txid, nout)))):
|
|
return await self.get(claim_id, claim_name, txid, nout)
|
|
|
|
|
|
class ChannelListManager(ClaimListManager):
|
|
name = 'channel'
|
|
__slots__ = ()
|
|
|
|
async def create(
|
|
self, name: str, amount: int, holding_account: Account,
|
|
funding_accounts: List[Account], save_key=True, **kwargs) -> Transaction:
|
|
|
|
holding_address = await holding_account.receiving.get_or_create_usable_address()
|
|
|
|
claim = Claim()
|
|
claim.channel.update(**kwargs)
|
|
txo = Output.pay_claim_name_pubkey_hash(
|
|
amount, name, claim, self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
|
|
await txo.generate_channel_private_key()
|
|
|
|
tx = await self.wallet.create_transaction(
|
|
[], [txo], funding_accounts, funding_accounts[0]
|
|
)
|
|
|
|
await self.wallet.sign(tx)
|
|
|
|
if save_key:
|
|
holding_account.add_channel_private_key(txo.private_key)
|
|
await self.wallet.save()
|
|
|
|
return tx
|
|
|
|
async def update(
|
|
self, old: Output, amount: int, new_signing_key: bool, replace: bool,
|
|
holding_account: Account, funding_accounts: List[Account],
|
|
save_key=True, **kwargs) -> Transaction:
|
|
|
|
moving_accounts = False
|
|
holding_address = old.get_address(self.wallet.ledger)
|
|
if holding_account:
|
|
old_account = await self.wallet.get_account_for_address(holding_address)
|
|
if holding_account.id != old_account.id:
|
|
holding_address = await holding_account.receiving.get_or_create_usable_address()
|
|
moving_accounts = True
|
|
elif new_signing_key:
|
|
holding_account = await self.wallet.get_account_for_address(holding_address)
|
|
|
|
if replace:
|
|
claim = Claim()
|
|
claim.channel.public_key_bytes = old.claim.channel.public_key_bytes
|
|
else:
|
|
claim = Claim.from_bytes(old.claim.to_bytes())
|
|
claim.channel.update(**kwargs)
|
|
|
|
txo = Output.pay_update_claim_pubkey_hash(
|
|
amount, old.claim_name, old.claim_id, claim,
|
|
self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
|
|
if new_signing_key:
|
|
await txo.generate_channel_private_key()
|
|
else:
|
|
txo.private_key = old.private_key
|
|
|
|
tx = await self.wallet.create_transaction(
|
|
[Input.spend(old)], [txo], funding_accounts, funding_accounts[0]
|
|
)
|
|
|
|
await self.wallet.sign(tx)
|
|
|
|
if any((new_signing_key, moving_accounts)) and save_key:
|
|
holding_account.add_channel_private_key(txo.private_key)
|
|
await self.wallet.save()
|
|
|
|
return tx
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_channels(wallet=self.wallet, **constraints)
|
|
|
|
async def get_for_signing(self, channel_id=None, channel_name=None) -> Output:
|
|
channel = await self.get(claim_id=channel_id, claim_name=channel_name)
|
|
if not channel.has_private_key:
|
|
raise Exception(
|
|
f"Couldn't find private key for channel '{channel.claim_name}', "
|
|
f"can't use channel for signing. "
|
|
)
|
|
return channel
|
|
|
|
async def get_for_signing_or_none(self, channel_id=None, channel_name=None) -> Optional[Output]:
|
|
if channel_id or channel_name:
|
|
return await self.get_for_signing(channel_id, channel_name)
|
|
|
|
|
|
class StreamListManager(ClaimListManager):
|
|
__slots__ = ()
|
|
|
|
async def create(
|
|
self, name: str, amount: int, file_path: str,
|
|
create_file_stream: Callable[[str], Awaitable[ManagedStream]],
|
|
holding_address: str, funding_accounts: List[Account],
|
|
signing_channel: Optional[Output] = None,
|
|
preview=False, **kwargs) -> Tuple[Transaction, ManagedStream]:
|
|
|
|
claim = Claim()
|
|
claim.stream.update(file_path=file_path, sd_hash='0' * 96, **kwargs)
|
|
|
|
# before creating file stream, create TX to ensure we have enough LBC
|
|
tx = await self._create(
|
|
name, claim, amount, holding_address,
|
|
funding_accounts, funding_accounts[0],
|
|
signing_channel
|
|
)
|
|
txo = tx.outputs[0]
|
|
|
|
file_stream = None
|
|
try:
|
|
|
|
# we have enough LBC to create TX, now try create the file stream
|
|
if not preview:
|
|
file_stream = await create_file_stream(file_path)
|
|
claim.stream.source.sd_hash = file_stream.sd_hash
|
|
txo.script.generate()
|
|
|
|
# creating TX and file stream was successful, now sign all the things
|
|
if signing_channel is not None:
|
|
txo.sign(signing_channel)
|
|
await self.wallet.sign(tx)
|
|
|
|
except Exception as e:
|
|
# creating file stream or something else went wrong, release txos
|
|
await self.wallet.db.release_tx(tx)
|
|
raise e
|
|
|
|
return tx, file_stream
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_streams(wallet=self.wallet, **constraints)
|
|
|
|
|
|
class CollectionListManager(ClaimListManager):
|
|
__slots__ = ()
|
|
|
|
async def create(
|
|
self, name: str, amount: int, holding_address: str, funding_accounts: List[Account],
|
|
channel: Optional[Output] = None, **kwargs) -> Transaction:
|
|
claim = Claim()
|
|
claim.collection.update(**kwargs)
|
|
return await super().create(
|
|
name, claim, amount, holding_address, funding_accounts, funding_accounts[0], channel
|
|
)
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_collections(wallet=self.wallet, **constraints)
|
|
|
|
|
|
class SupportListManager(BaseListManager):
|
|
__slots__ = ()
|
|
|
|
async def create(self, name: str, claim_id: str, amount: int, holding_address: str,
|
|
funding_accounts: List[Account], change_account: Account) -> Transaction:
|
|
support_output = Output.pay_support_pubkey_hash(
|
|
amount, name, claim_id, self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
return await self.wallet.create_transaction(
|
|
[], [support_output], funding_accounts, change_account
|
|
)
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_supports(**constraints)
|
|
|
|
async def get(self, **constraints) -> Output:
|
|
raise NotImplementedError
|
|
|
|
async def get_or_none(self, **constraints) -> Optional[Output]:
|
|
raise NotImplementedError
|
|
|
|
|
|
class PurchaseListManager(BaseListManager):
|
|
__slots__ = ()
|
|
|
|
async def create(self, name: str, claim_id: str, amount: int, holding_address: str,
|
|
funding_accounts: List[Account], change_account: Account) -> Transaction:
|
|
support_output = Output.pay_support_pubkey_hash(
|
|
amount, name, claim_id, self.wallet.ledger.address_to_hash160(holding_address)
|
|
)
|
|
return await self.wallet.create_transaction(
|
|
[], [support_output], funding_accounts, change_account
|
|
)
|
|
|
|
def purchase(self, claim_id: str, amount: int, merchant_address: bytes,
|
|
funding_accounts: List['Account'], change_account: 'Account'):
|
|
payment = Output.pay_pubkey_hash(amount, self.ledger.address_to_hash160(merchant_address))
|
|
data = Output.add_purchase_data(Purchase(claim_id))
|
|
return self.create_transaction(
|
|
[], [payment, data], funding_accounts, change_account
|
|
)
|
|
|
|
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.ledger.conf.max_key_fee:
|
|
max_fee = self.ledger.conf.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 self.purchase(
|
|
txo.claim_id, fee_amount, fee_address, accounts, accounts[0]
|
|
)
|
|
|
|
async def list(self, **constraints) -> Tuple[List[Output], Optional[int]]:
|
|
return await self.wallet.db.get_purchases(**constraints)
|
|
|
|
async def get(self, **constraints) -> Output:
|
|
raise NotImplementedError
|
|
|
|
async def get_or_none(self, **constraints) -> Optional[Output]:
|
|
raise NotImplementedError
|
|
|
|
|
|
def txs_to_dict(txs, ledger):
|
|
history = []
|
|
for tx in txs: # pylint: disable=too-many-nested-blocks
|
|
ts = headers.estimated_timestamp(tx.height)
|
|
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': [],
|
|
'purchase_info': []
|
|
}
|
|
is_my_inputs = all([txi.is_my_input 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(self.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,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
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(self),
|
|
'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,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
else: # someone sent us their claim
|
|
item['update_info'].append({
|
|
'address': txo.get_address(self),
|
|
'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,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
for txo in tx.my_support_outputs:
|
|
item['support_info'].append({
|
|
'address': txo.get_address(self.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,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
if is_my_inputs:
|
|
for txo in tx.other_support_outputs:
|
|
item['support_info'].append({
|
|
'address': txo.get_address(self.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,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
for txo in tx.my_abandon_outputs:
|
|
item['abandon_info'].append({
|
|
'address': txo.get_address(self.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.any_purchase_outputs:
|
|
item['purchase_info'].append({
|
|
'address': txo.get_address(self.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.purchased_claim_id,
|
|
'nout': txo.position,
|
|
'is_spent': txo.is_spent,
|
|
})
|
|
history.append(item)
|
|
return history
|