# -*- coding: utf-8 -*- # Copyright (c) 2019-2022 tecnovert # Distributed under the MIT software license, see the accompanying # file LICENSE or http://www.opensource.org/licenses/mit-license.php. import os import re import sys import zmq import json import time import base64 import random import shutil import struct import urllib.request import hashlib import secrets import datetime as dt import threading import traceback import sqlalchemy as sa import collections import concurrent.futures from sqlalchemy.orm import sessionmaker, scoped_session from sqlalchemy.orm.session import close_all_sessions from .interface_part import PARTInterface, PARTInterfaceAnon, PARTInterfaceBlind from .interface_btc import BTCInterface from .interface_ltc import LTCInterface from .interface_nmc import NMCInterface from .interface_xmr import XMRInterface from .interface_passthrough_btc import PassthroughBTCInterface from . import __version__ from .rpc_xmr import make_xmr_rpc2_func from .util import ( TemporaryError, AutomationConstraint, format_amount, format_timestamp, DeserialiseNum, make_int, ensure, ) from .util.script import ( getP2WSH, getP2SHScriptForHash, ) from .util.address import ( toWIF, getKeyID, decodeWif, decodeAddress, encodeAddress, pubkeyToAddress, ) from .chainparams import ( Coins, chainparams, ) from .script import ( OpCodes, ) from .messages_pb2 import ( OfferMessage, BidMessage, BidAcceptMessage, XmrBidMessage, XmrBidAcceptMessage, XmrSplitMessage, XmrBidLockTxSigsMessage, XmrBidLockSpendTxMessage, XmrBidLockReleaseMessage, OfferRevokeMessage, ) from .db import ( CURRENT_DB_VERSION, Concepts, Base, DBKVInt, DBKVString, Offer, Bid, SwapTx, PooledAddress, SentOffer, SmsgAddress, Action, EventLog, XmrOffer, XmrSwap, XmrSplitData, Wallets, KnownIdentity, AutomationLink, AutomationStrategy, ) from .db_upgrades import upgradeDatabase, upgradeDatabaseData from .base import BaseApp from .explorers import ( ExplorerInsight, ExplorerBitAps, ExplorerChainz, ) import basicswap.config as cfg import basicswap.network as bsn import basicswap.protocols.atomic_swap_1 as atomic_swap_1 from .basicswap_util import ( KeyTypes, TxLockTypes, AddressTypes, MessageTypes, SwapTypes, OfferStates, BidStates, TxStates, TxTypes, ActionTypes, EventLogTypes, XmrSplitMsgTypes, DebugTypes, strBidState, describeEventEntry, getVoutByAddress, getVoutByP2WSH, replaceAddrPrefix, getOfferProofOfFundsHash, getLastBidState, isActiveBidState) from .protocols.xmr_swap_1 import ( addLockRefundSigs, recoverNoScriptTxnWithKey) non_script_type_coins = (Coins.XMR, Coins.PART_ANON) def validOfferStateToReceiveBid(offer_state): if offer_state == OfferStates.OFFER_RECEIVED: return True if offer_state == OfferStates.OFFER_SENT: return True return False def zeroIfNone(value): if value is None: return 0 return value def threadPollChainState(swap_client, coin_type): while not swap_client.delay_event.is_set(): try: ci = swap_client.ci(coin_type) cc = swap_client.coin_clients[coin_type] if coin_type == Coins.XMR: new_height = ci.getChainHeight() if new_height != cc['chain_height']: swap_client.log.debug('New {} block at height: {}'.format(str(coin_type), new_height)) with swap_client.mxDB: cc['chain_height'] = new_height continue # Not XMR chain_state = ci.getBlockchainInfo() if chain_state['bestblockhash'] != cc['chain_best_block']: swap_client.log.debug('New {} block at height: {}'.format(str(coin_type), chain_state['blocks'])) with swap_client.mxDB: cc['chain_height'] = chain_state['blocks'] cc['chain_best_block'] = chain_state['bestblockhash'] cc['chain_median_time'] = chain_state['mediantime'] except Exception as e: swap_client.log.warning('threadPollChainState {}, error: {}'.format(str(coin_type), str(e))) swap_client.delay_event.wait(random.randrange(20, 30)) # random to stagger updates class WatchedOutput(): # Watch for spends __slots__ = ('bid_id', 'txid_hex', 'vout', 'tx_type', 'swap_type') def __init__(self, bid_id, txid_hex, vout, tx_type, swap_type): self.bid_id = bid_id self.txid_hex = txid_hex self.vout = vout self.tx_type = tx_type self.swap_type = swap_type class WatchedTransaction(): # TODO # Watch for presence in mempool (getrawtransaction) def __init__(self, bid_id, txid_hex, tx_type, swap_type): self.bid_id = bid_id self.txid_hex = txid_hex self.tx_type = tx_type self.swap_type = swap_type class BasicSwap(BaseApp): def __init__(self, fp, data_dir, settings, chain, log_name='BasicSwap'): super().__init__(fp, data_dir, settings, chain, log_name) v = __version__.split('.') self._version = struct.pack('>HHH', int(v[0]), int(v[1]), int(v[2])) self.check_progress_seconds = self.settings.get('check_progress_seconds', 60) self.check_watched_seconds = self.settings.get('check_watched_seconds', 60) self.check_expired_seconds = self.settings.get('check_expired_seconds', 60 * 5) self.check_actions_seconds = self.settings.get('check_actions_seconds', 10) self.check_xmr_swaps_seconds = self.settings.get('check_xmr_swaps_seconds', 20) self.startup_tries = self.settings.get('startup_tries', 21) # Seconds waited for will be (x(1 + x+1) / 2 self.debug_ui = self.settings.get('debug_ui', False) self._last_checked_progress = 0 self._last_checked_watched = 0 self._last_checked_expired = 0 self._last_checked_actions = 0 self._last_checked_xmr_swaps = 0 self._possibly_revoked_offers = collections.deque([], maxlen=48) # TODO: improve self._updating_wallets_info = {} self._last_updated_wallets_info = 0 # TODO: Adjust ranges self.min_delay_event = self.settings.get('min_delay_event', 10) self.max_delay_event = self.settings.get('max_delay_event', 60) self.min_delay_event_short = self.settings.get('min_delay_event_short', 2) self.max_delay_event_short = self.settings.get('max_delay_event_short', 30) self.min_delay_retry = self.settings.get('min_delay_retry', 60) self.max_delay_retry = self.settings.get('max_delay_retry', 5 * 60) self.min_sequence_lock_seconds = self.settings.get('min_sequence_lock_seconds', 1 * 60 * 60) self.max_sequence_lock_seconds = self.settings.get('max_sequence_lock_seconds', 96 * 60 * 60) self._bid_expired_leeway = 5 self.swaps_in_progress = dict() self.SMSG_SECONDS_IN_HOUR = 60 * 60 # Note: Set smsgsregtestadjust=0 for regtest self.threads = [] self.thread_pool = concurrent.futures.ThreadPoolExecutor(max_workers=4, thread_name_prefix='bsp') # Encode key to match network wif_prefix = chainparams[Coins.PART][self.chain]['key_prefix'] self.network_key = toWIF(wif_prefix, decodeWif(self.settings['network_key'])) self.network_pubkey = self.settings['network_pubkey'] self.network_addr = pubkeyToAddress(chainparams[Coins.PART][self.chain]['pubkey_address'], bytes.fromhex(self.network_pubkey)) self.db_echo = self.settings.get('db_echo', False) self.sqlite_file = os.path.join(self.data_dir, 'db{}.sqlite'.format('' if self.chain == 'mainnet' else ('_' + self.chain))) db_exists = os.path.exists(self.sqlite_file) # HACK: create_all hangs when using tox, unless create_engine is called with echo=True if not db_exists: if os.getenv('FOR_TOX'): self.engine = sa.create_engine('sqlite:///' + self.sqlite_file, echo=True) else: self.engine = sa.create_engine('sqlite:///' + self.sqlite_file) close_all_sessions() Base.metadata.create_all(self.engine) self.engine.dispose() self.engine = sa.create_engine('sqlite:///' + self.sqlite_file, echo=self.db_echo) self.session_factory = sessionmaker(bind=self.engine, expire_on_commit=False) session = scoped_session(self.session_factory) try: self.db_version = session.query(DBKVInt).filter_by(key='db_version').first().value except Exception: self.log.info('First run') self.db_version = CURRENT_DB_VERSION session.add(DBKVInt( key='db_version', value=self.db_version )) session.commit() try: self.db_data_version = session.query(DBKVInt).filter_by(key='db_data_version').first().value except Exception: self.db_data_version = 0 try: self._contract_count = session.query(DBKVInt).filter_by(key='contract_count').first().value except Exception: self._contract_count = 0 session.add(DBKVInt( key='contract_count', value=self._contract_count )) session.commit() session.close() session.remove() self.zmqContext = zmq.Context() self.zmqSubscriber = self.zmqContext.socket(zmq.SUB) self.zmqSubscriber.connect(self.settings['zmqhost'] + ':' + str(self.settings['zmqport'])) self.zmqSubscriber.setsockopt_string(zmq.SUBSCRIBE, 'smsg') for c in Coins: if c in chainparams: self.setCoinConnectParams(c) if self.chain == 'mainnet': self.coin_clients[Coins.PART]['explorers'].append(ExplorerInsight( self, Coins.PART, 'https://explorer.particl.io/particl-insight-api')) self.coin_clients[Coins.LTC]['explorers'].append(ExplorerBitAps( self, Coins.LTC, 'https://api.bitaps.com/ltc/v1/blockchain')) self.coin_clients[Coins.LTC]['explorers'].append(ExplorerChainz( self, Coins.LTC, 'http://chainz.cryptoid.info/ltc/api.dws')) elif self.chain == 'testnet': self.coin_clients[Coins.PART]['explorers'].append(ExplorerInsight( self, Coins.PART, 'https://explorer-testnet.particl.io/particl-insight-api')) self.coin_clients[Coins.LTC]['explorers'].append(ExplorerBitAps( self, Coins.LTC, 'https://api.bitaps.com/ltc/testnet/v1/blockchain')) # non-segwit # https://testnet.litecore.io/insight-api random.seed(secrets.randbits(128)) def finalise(self): self.log.info('Finalise') with self.mxDB: self.is_running = False self.delay_event.set() if self._network: self._network.stopNetwork() self._network = None for t in self.threads: t.join() if sys.version_info[1] >= 9: self.thread_pool.shutdown(cancel_futures=True) else: self.thread_pool.shutdown() self.zmqContext.destroy() close_all_sessions() self.engine.dispose() def setCoinConnectParams(self, coin): # Set anything that does not require the daemon to be running chain_client_settings = self.getChainClientSettings(coin) bindir = os.path.expanduser(chain_client_settings.get('bindir', '')) datadir = os.path.expanduser(chain_client_settings.get('datadir', os.path.join(cfg.TEST_DATADIRS, chainparams[coin]['name']))) connection_type = chain_client_settings.get('connection_type', 'none') rpcauth = None if connection_type == 'rpc': if 'rpcauth' in chain_client_settings: rpcauth = chain_client_settings['rpcauth'] self.log.debug('Read %s rpc credentials from json settings', coin) elif 'rpcpassword' in chain_client_settings: rpcauth = chain_client_settings['rpcuser'] + ':' + chain_client_settings['rpcpassword'] self.log.debug('Read %s rpc credentials from json settings', coin) session = scoped_session(self.session_factory) try: last_height_checked = session.query(DBKVInt).filter_by(key='last_height_checked_' + chainparams[coin]['name']).first().value except Exception: last_height_checked = 0 session.close() session.remove() self.coin_clients[coin] = { 'coin': coin, 'name': chainparams[coin]['name'], 'connection_type': connection_type, 'bindir': bindir, 'datadir': datadir, 'rpchost': chain_client_settings.get('rpchost', '127.0.0.1'), 'rpcport': chain_client_settings.get('rpcport', chainparams[coin][self.chain]['rpcport']), 'rpcauth': rpcauth, 'blocks_confirmed': chain_client_settings.get('blocks_confirmed', 6), 'conf_target': chain_client_settings.get('conf_target', 2), 'watched_outputs': [], 'last_height_checked': last_height_checked, 'use_segwit': chain_client_settings.get('use_segwit', False), 'use_csv': chain_client_settings.get('use_csv', True), 'core_version_group': chain_client_settings.get('core_version_group', 0), 'pid': None, 'core_version': None, 'explorers': [], 'chain_lookups': chain_client_settings.get('chain_lookups', 'local'), 'restore_height': chain_client_settings.get('restore_height', 0), 'fee_priority': chain_client_settings.get('fee_priority', 0), # Chain state 'chain_height': None, 'chain_best_block': None, 'chain_median_time': None, } if coin == Coins.PART: self.coin_clients[coin]['anon_tx_ring_size'] = chain_client_settings.get('anon_tx_ring_size', 12) self.coin_clients[Coins.PART_ANON] = self.coin_clients[coin] self.coin_clients[Coins.PART_BLIND] = self.coin_clients[coin] if self.coin_clients[coin]['connection_type'] == 'rpc': if coin == Coins.XMR: if chain_client_settings.get('automatically_select_daemon', False): self.selectXMRRemoteDaemon(coin) self.coin_clients[coin]['walletrpchost'] = chain_client_settings.get('walletrpchost', '127.0.0.1') self.coin_clients[coin]['walletrpcport'] = chain_client_settings.get('walletrpcport', chainparams[coin][self.chain]['walletrpcport']) if 'walletrpcpassword' in chain_client_settings: self.coin_clients[coin]['walletrpcauth'] = (chain_client_settings['walletrpcuser'], chain_client_settings['walletrpcpassword']) else: raise ValueError('Missing XMR wallet rpc credentials.') def selectXMRRemoteDaemon(self, coin): self.log.info('Selecting remote XMR daemon.') chain_client_settings = self.getChainClientSettings(coin) remote_daemon_urls = chain_client_settings.get('remote_daemon_urls', []) rpchost = self.coin_clients[coin]['rpchost'] rpcport = self.coin_clients[coin]['rpcport'] current_daemon_url = f'{rpchost}:{rpcport}' if current_daemon_url in remote_daemon_urls: self.log.info(f'Trying last used url {rpchost}:{rpcport}.') try: rpc_cb2 = make_xmr_rpc2_func(rpcport, rpchost) test = rpc_cb2('get_height', timeout=20)['height'] return True except Exception as e: self.log.warning(f'Failed to set XMR remote daemon to {rpchost}:{rpcport}, {e}') random.shuffle(remote_daemon_urls) for url in remote_daemon_urls: self.log.info(f'Trying url {url}.') try: rpchost, rpcport = url.rsplit(':', 1) rpc_cb2 = make_xmr_rpc2_func(rpcport, rpchost) test = rpc_cb2('get_height', timeout=20)['height'] self.coin_clients[coin]['rpchost'] = rpchost self.coin_clients[coin]['rpcport'] = rpcport data = { 'rpchost': rpchost, 'rpcport': rpcport, } self.editSettings(self.coin_clients[coin]['name'], data) return True except Exception as e: self.log.warning(f'Failed to set XMR remote daemon to {url}, {e}') raise ValueError('Failed to select a working XMR daemon url.') def ci(self, coin): # Coin interface if coin == Coins.PART_ANON: return self.coin_clients[Coins.PART]['interface_anon'] if coin == Coins.PART_BLIND: return self.coin_clients[Coins.PART]['interface_blind'] return self.coin_clients[coin]['interface'] def createInterface(self, coin): if coin == Coins.PART: return PARTInterface(self.coin_clients[coin], self.chain, self) elif coin == Coins.BTC: return BTCInterface(self.coin_clients[coin], self.chain, self) elif coin == Coins.LTC: return LTCInterface(self.coin_clients[coin], self.chain, self) elif coin == Coins.NMC: return NMCInterface(self.coin_clients[coin], self.chain, self) elif coin == Coins.XMR: xmr_i = XMRInterface(self.coin_clients[coin], self.chain, self) chain_client_settings = self.getChainClientSettings(coin) xmr_i.setWalletFilename(chain_client_settings['walletfile']) return xmr_i else: raise ValueError('Unknown coin type') def createPassthroughInterface(self, coin): if coin == Coins.BTC: return PassthroughBTCInterface(self.coin_clients[coin], self.chain) else: raise ValueError('Unknown coin type') def setCoinRunParams(self, coin): cc = self.coin_clients[coin] if coin == Coins.XMR: return if cc['connection_type'] == 'rpc' and cc['rpcauth'] is None: chain_client_settings = self.getChainClientSettings(coin) authcookiepath = os.path.join(self.getChainDatadirPath(coin), '.cookie') pidfilename = cc['name'] if cc['name'] == 'bitcoin' or cc['name'] == 'litecoin' or cc['name'] == 'namecoin': pidfilename += 'd' pidfilepath = os.path.join(self.getChainDatadirPath(coin), pidfilename + '.pid') self.log.debug('Reading %s rpc credentials from auth cookie %s', coin, authcookiepath) # Wait for daemon to start # Test pids to ensure authcookie is read for the correct process datadir_pid = -1 for i in range(20): try: # Workaround for mismatched pid file name in litecoin 0.21.2 # Also set with pid= in .conf # TODO: Remove if cc['name'] == 'litecoin' and (not os.path.exists(pidfilepath)) and \ os.path.exists(os.path.join(self.getChainDatadirPath(coin), 'bitcoind.pid')): pidfilepath = os.path.join(self.getChainDatadirPath(coin), 'bitcoind.pid') with open(pidfilepath, 'rb') as fp: datadir_pid = int(fp.read().decode('utf-8')) assert(datadir_pid == cc['pid']), 'Mismatched pid' assert(os.path.exists(authcookiepath)) except Exception: self.delay_event.wait(0.5) try: if os.name != 'nt' or cc['core_version_group'] > 17: # Litecoin on windows doesn't write a pid file assert(datadir_pid == cc['pid']), 'Mismatched pid' with open(authcookiepath, 'rb') as fp: cc['rpcauth'] = fp.read().decode('utf-8') except Exception as e: self.log.error('Unable to read authcookie for %s, %s, datadir pid %d, daemon pid %s. Error: %s', str(coin), authcookiepath, datadir_pid, cc['pid'], str(e)) raise ValueError('Error, terminating') def createCoinInterface(self, coin): if self.coin_clients[coin]['connection_type'] == 'rpc': self.coin_clients[coin]['interface'] = self.createInterface(coin) if coin == Coins.PART: self.coin_clients[coin]['interface_anon'] = PARTInterfaceAnon(self.coin_clients[coin], self.chain, self) self.coin_clients[coin]['interface_blind'] = PARTInterfaceBlind(self.coin_clients[coin], self.chain, self) elif self.coin_clients[coin]['connection_type'] == 'passthrough': self.coin_clients[coin]['interface'] = self.createPassthroughInterface(coin) def start(self): self.log.info('Starting BasicSwap %s, database v%d\n\n', __version__, self.db_version) self.log.info('sqlalchemy version %s', sa.__version__) self.log.info('timezone offset: %d (%s)', time.timezone, time.tzname[0]) upgradeDatabase(self, self.db_version) upgradeDatabaseData(self, self.db_data_version) for c in Coins: if c not in chainparams: continue self.setCoinRunParams(c) self.createCoinInterface(c) if self.coin_clients[c]['connection_type'] == 'rpc': self.waitForDaemonRPC(c) ci = self.ci(c) core_version = ci.getDaemonVersion() self.log.info('%s Core version %d', ci.coin_name(), core_version) self.coin_clients[c]['core_version'] = core_version t = threading.Thread(target=threadPollChainState, args=(self, c)) self.threads.append(t) t.start() if c == Coins.PART: self.coin_clients[c]['have_spent_index'] = ci.haveSpentIndex() try: # Sanity checks rv = self.callcoinrpc(c, 'extkey') if 'result' in rv and 'No keys to list.' in rv['result']: raise ValueError('No keys loaded.') if self.callcoinrpc(c, 'getstakinginfo')['enabled'] is not False: self.log.warning('%s staking is not disabled.', ci.coin_name()) except Exception as e: self.log.error('Sanity checks failed: %s', str(e)) elif c == Coins.XMR: ci.ensureWalletExists() self.checkWalletSeed(c) if 'p2p_host' in self.settings: network_key = self.getNetworkKey(1) self._network = bsn.Network(self.settings['p2p_host'], self.settings['p2p_port'], network_key, self) self._network.startNetwork() self.initialise() def stopDaemon(self, coin): if coin == Coins.XMR: return num_tries = 10 authcookiepath = os.path.join(self.getChainDatadirPath(coin), '.cookie') stopping = False try: for i in range(num_tries): rv = self.callcoincli(coin, 'stop', timeout=10) self.log.debug('Trying to stop %s', str(coin)) stopping = True time.sleep(i + 1) except Exception as ex: if 'Could not connect' in str(ex): if stopping: for i in range(30): # The lock file doesn't get deleted # Using .cookie is a temporary workaround, will only work if rpc password is unset. # TODO: Query lock on .lock properly if os.path.exists(authcookiepath): self.log.debug('Waiting on .cookie file %s', str(coin)) time.sleep(i + 1) time.sleep(4) # Extra time to settle return self.log.error('stopDaemon %s', str(ex)) self.log.error(traceback.format_exc()) raise ValueError('Could not stop {}'.format(str(coin))) def stopDaemons(self): for c in Coins: if c not in chainparams: continue chain_client_settings = self.getChainClientSettings(c) if self.coin_clients[c]['connection_type'] == 'rpc' and chain_client_settings['manage_daemon'] is True: self.stopDaemon(c) def waitForDaemonRPC(self, coin_type, with_wallet=True): for i in range(self.startup_tries): if not self.is_running: return try: self.coin_clients[coin_type]['interface'].testDaemonRPC(with_wallet) return except Exception as ex: self.log.warning('Can\'t connect to %s RPC: %s. Trying again in %d second/s.', coin_type, str(ex), (1 + i)) time.sleep(1 + i) self.log.error('Can\'t connect to %s RPC, exiting.', coin_type) self.stopRunning(1) # systemd will try to restart the process if fail_code != 0 def checkSynced(self, coin_from, coin_to): check_coins = (coin_from, coin_to) for c in check_coins: if self.coin_clients[c]['connection_type'] != 'rpc': continue if c == Coins.XMR: continue # TODO synced = round(self.ci(c).getBlockchainInfo()['verificationprogress'], 3) if synced < 1.0: raise ValueError('{} chain is still syncing, currently at {}.'.format(self.coin_clients[c]['name'], synced)) def initialiseWallet(self, coin_type): if coin_type == Coins.PART: return ci = self.ci(coin_type) self.log.info('Initialising {} wallet.'.format(ci.coin_name())) if coin_type == Coins.XMR: key_view = self.getWalletKey(coin_type, 1, for_ed25519=True) key_spend = self.getWalletKey(coin_type, 2, for_ed25519=True) ci.initialiseWallet(key_view, key_spend) root_address = ci.getAddressFromKeys(key_view, key_spend) key_str = 'main_wallet_addr_' + ci.coin_name().lower() self.setStringKV(key_str, root_address) return root_key = self.getWalletKey(coin_type, 1) root_hash = ci.getAddressHashFromKey(root_key)[::-1] ci.initialiseWallet(root_key) key_str = 'main_wallet_seedid_' + ci.coin_name().lower() self.setStringKV(key_str, root_hash.hex()) def updateIdentityBidState(self, session, address, bid): identity_stats = session.query(KnownIdentity).filter_by(address=address).first() if not identity_stats: identity_stats = KnownIdentity(address=address, created_at=int(time.time())) if bid.state == BidStates.SWAP_COMPLETED: if bid.was_sent: identity_stats.num_sent_bids_successful = zeroIfNone(identity_stats.num_sent_bids_successful) + 1 else: identity_stats.num_recv_bids_successful = zeroIfNone(identity_stats.num_recv_bids_successful) + 1 elif bid.state in (BidStates.BID_ERROR, BidStates.XMR_SWAP_FAILED_REFUNDED, BidStates.XMR_SWAP_FAILED_SWIPED, BidStates.XMR_SWAP_FAILED): if bid.was_sent: identity_stats.num_sent_bids_failed = zeroIfNone(identity_stats.num_sent_bids_failed) + 1 else: identity_stats.num_recv_bids_failed = zeroIfNone(identity_stats.num_recv_bids_failed) + 1 identity_stats.updated_at = int(time.time()) session.add(identity_stats) def setIntKVInSession(self, str_key, int_val, session): kv = session.query(DBKVInt).filter_by(key=str_key).first() if not kv: kv = DBKVInt(key=str_key, value=int_val) else: kv.value = int_val session.add(kv) def setIntKV(self, str_key, int_val): self.mxDB.acquire() try: session = scoped_session(self.session_factory) self.setIntKVInSession(str_key, int_val, session) session.commit() finally: session.close() session.remove() self.mxDB.release() def setStringKV(self, str_key, str_val): with self.mxDB: try: session = scoped_session(self.session_factory) kv = session.query(DBKVString).filter_by(key=str_key).first() if not kv: kv = DBKVString(key=str_key, value=str_val) else: kv.value = str_val session.add(kv) session.commit() finally: session.close() session.remove() def getStringKV(self, str_key): self.mxDB.acquire() try: session = scoped_session(self.session_factory) v = session.query(DBKVString).filter_by(key=str_key).first() if not v: return None return v.value finally: session.close() session.remove() self.mxDB.release() def activateBid(self, session, bid): if bid.bid_id in self.swaps_in_progress: self.log.debug('Bid %s is already in progress', bid.bid_id.hex()) self.log.debug('Loading active bid %s', bid.bid_id.hex()) offer = session.query(Offer).filter_by(offer_id=bid.offer_id).first() if not offer: raise ValueError('Offer not found') self.loadBidTxns(bid, session) if offer.swap_type == SwapTypes.XMR_SWAP: xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() self.watchXmrSwap(bid, offer, xmr_swap) else: self.swaps_in_progress[bid.bid_id] = (bid, offer) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) if bid.initiate_tx and bid.initiate_tx.txid: self.addWatchedOutput(coin_from, bid.bid_id, bid.initiate_tx.txid.hex(), bid.initiate_tx.vout, BidStates.SWAP_INITIATED) if bid.participate_tx and bid.participate_tx.txid: self.addWatchedOutput(coin_to, bid.bid_id, bid.participate_tx.txid.hex(), bid.participate_tx.vout, BidStates.SWAP_PARTICIPATING) if self.coin_clients[coin_from]['last_height_checked'] < 1: if bid.initiate_tx and bid.initiate_tx.chain_height: self.coin_clients[coin_from]['last_height_checked'] = bid.initiate_tx.chain_height if self.coin_clients[coin_to]['last_height_checked'] < 1: if bid.participate_tx and bid.participate_tx.chain_height: self.coin_clients[coin_to]['last_height_checked'] = bid.participate_tx.chain_height # TODO process addresspool if bid has previously been abandoned def deactivateBid(self, session, offer, bid): # Remove from in progress self.log.debug('Removing bid from in-progress: %s', bid.bid_id.hex()) self.swaps_in_progress.pop(bid.bid_id, None) bid.in_progress = 0 if session is None: self.saveBid(bid.bid_id, bid) # Remove any watched outputs self.removeWatchedOutput(Coins(offer.coin_from), bid.bid_id, None) self.removeWatchedOutput(Coins(offer.coin_to), bid.bid_id, None) if bid.state == BidStates.BID_ABANDONED or bid.state == BidStates.SWAP_COMPLETED: # Return unused addrs to pool itx_state = bid.getITxState() ptx_state = bid.getPTxState() if itx_state is not None and itx_state != TxStates.TX_REDEEMED: self.returnAddressToPool(bid.bid_id, TxTypes.ITX_REDEEM) if itx_state is not None and itx_state != TxStates.TX_REFUNDED: self.returnAddressToPool(bid.bid_id, TxTypes.ITX_REFUND) if ptx_state is not None and ptx_state != TxStates.TX_REDEEMED: self.returnAddressToPool(bid.bid_id, TxTypes.PTX_REDEEM) if ptx_state is not None and ptx_state != TxStates.TX_REFUNDED: self.returnAddressToPool(bid.bid_id, TxTypes.PTX_REFUND) use_session = None try: if session: use_session = session else: self.mxDB.acquire() use_session = scoped_session(self.session_factory) # Remove any delayed events if self.debug: use_session.execute('UPDATE actions SET active_ind = 2 WHERE linked_id = x\'{}\' '.format(bid.bid_id.hex())) else: use_session.execute('DELETE FROM actions WHERE linked_id = x\'{}\' '.format(bid.bid_id.hex())) # Unlock locked inputs (TODO) if offer.swap_type == SwapTypes.XMR_SWAP: xmr_swap = use_session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() if xmr_swap: try: self.ci(offer.coin_from).unlockInputs(xmr_swap.a_lock_tx) except Exception as e: self.log.debug('unlockInputs failed {}'.format(str(e))) pass # Invalid parameter, unknown transaction elif SwapTypes.SELLER_FIRST: pass # No prevouts are locked # Update identity stats if bid.state in (BidStates.BID_ERROR, BidStates.XMR_SWAP_FAILED_REFUNDED, BidStates.XMR_SWAP_FAILED_SWIPED, BidStates.XMR_SWAP_FAILED, BidStates.SWAP_COMPLETED): peer_address = offer.addr_from if bid.was_sent else bid.bid_addr self.updateIdentityBidState(use_session, peer_address, bid) finally: if session is None: use_session.commit() use_session.close() use_session.remove() self.mxDB.release() def loadFromDB(self): self.log.info('Loading data from db') self.mxDB.acquire() try: session = scoped_session(self.session_factory) for bid in session.query(Bid): if bid.in_progress == 1 or (bid.state and bid.state > BidStates.BID_RECEIVED and bid.state < BidStates.SWAP_COMPLETED): try: self.activateBid(session, bid) except Exception as ex: self.log.error('Failed to activate bid! Error: %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) try: bid.setState(BidStates.BID_ERROR, 'Failed to activate') offer = session.query(Offer).filter_by(offer_id=bid.offer_id).first() self.deactivateBid(session, offer, bid) except Exception as ex: self.log.error('Further error deactivating: %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) finally: session.close() session.remove() self.mxDB.release() def initialise(self): self.log.debug('network_key %s\nnetwork_pubkey %s\nnetwork_addr %s', self.network_key, self.network_pubkey, self.network_addr) ro = self.callrpc('smsglocalkeys') found = False for k in ro['smsg_keys']: if k['address'] == self.network_addr: found = True break if not found: self.log.info('Importing network key to SMSG') self.callrpc('smsgimportprivkey', [self.network_key, 'basicswap offers']) ro = self.callrpc('smsglocalkeys', ['anon', '-', self.network_addr]) ensure(ro['result'] == 'Success.', 'smsglocalkeys failed') # TODO: Ensure smsg is enabled for the active wallet. self.loadFromDB() # Scan inbox # TODO: Redundant? small window for zmq messages to go unnoticed during startup? # options = {'encoding': 'hex'} options = {'encoding': 'none'} ro = self.callrpc('smsginbox', ['unread', '', options]) nm = 0 for msg in ro['messages']: # TODO: Remove workaround for smsginbox bug get_msg = self.callrpc('smsg', [msg['msgid'], {'encoding': 'hex', 'setread': True}]) self.processMsg(get_msg) nm += 1 self.log.info('Scanned %d unread messages.', nm) def getActiveBidMsgValidTime(self): return self.SMSG_SECONDS_IN_HOUR * 48 def getAcceptBidMsgValidTime(self, bid): now = int(time.time()) smsg_max_valid = self.SMSG_SECONDS_IN_HOUR * 48 smsg_min_valid = self.SMSG_SECONDS_IN_HOUR * 1 bid_valid = (bid.expire_at - now) + 10 * 60 # Add 10 minute buffer return max(smsg_min_valid, min(smsg_max_valid, bid_valid)) def sendSmsg(self, addr_from, addr_to, payload_hex, msg_valid): options = {'decodehex': True, 'ttl_is_seconds': True} ro = self.callrpc('smsgsend', [addr_from, addr_to, payload_hex, False, msg_valid, False, options]) return bytes.fromhex(ro['msgid']) def validateSwapType(self, coin_from, coin_to, swap_type): if coin_from == Coins.XMR: raise ValueError('TODO: XMR coin_from') if coin_to == Coins.XMR and swap_type != SwapTypes.XMR_SWAP: raise ValueError('Invalid swap type for XMR') if coin_from == Coins.PART_ANON: raise ValueError('TODO: PART_ANON coin_from') if coin_to == Coins.PART_ANON and swap_type != SwapTypes.XMR_SWAP: raise ValueError('Invalid swap type for PART_ANON') if (coin_from == Coins.PART_BLIND or coin_to == Coins.PART_BLIND) and swap_type != SwapTypes.XMR_SWAP: raise ValueError('Invalid swap type for PART_BLIND') def validateOfferAmounts(self, coin_from, coin_to, amount, rate, min_bid_amount): ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) ensure(amount >= min_bid_amount, 'amount < min_bid_amount') ensure(amount > ci_from.min_amount(), 'From amount below min value for chain') ensure(amount < ci_from.max_amount(), 'From amount above max value for chain') amount_to = int((amount * rate) // ci_from.COIN()) ensure(amount_to > ci_to.min_amount(), 'To amount below min value for chain') ensure(amount_to < ci_to.max_amount(), 'To amount above max value for chain') def validateOfferLockValue(self, coin_from, coin_to, lock_type, lock_value): if lock_type == OfferMessage.SEQUENCE_LOCK_TIME: ensure(lock_value >= self.min_sequence_lock_seconds and lock_value <= self.max_sequence_lock_seconds, 'Invalid lock_value time') ensure(self.coin_clients[coin_from]['use_csv'] and self.coin_clients[coin_to]['use_csv'], 'Both coins need CSV activated.') elif lock_type == OfferMessage.SEQUENCE_LOCK_BLOCKS: ensure(lock_value >= 5 and lock_value <= 1000, 'Invalid lock_value blocks') ensure(self.coin_clients[coin_from]['use_csv'] and self.coin_clients[coin_to]['use_csv'], 'Both coins need CSV activated.') elif lock_type == TxLockTypes.ABS_LOCK_TIME: # TODO: range? ensure(not self.coin_clients[coin_from]['use_csv'] or not self.coin_clients[coin_to]['use_csv'], 'Should use CSV.') ensure(lock_value >= 4 * 60 * 60 and lock_value <= 96 * 60 * 60, 'Invalid lock_value time') elif lock_type == TxLockTypes.ABS_LOCK_BLOCKS: # TODO: range? ensure(not self.coin_clients[coin_from]['use_csv'] or not self.coin_clients[coin_to]['use_csv'], 'Should use CSV.') ensure(lock_value >= 10 and lock_value <= 1000, 'Invalid lock_value blocks') else: raise ValueError('Unknown locktype') def validateOfferValidTime(self, offer_type, coin_from, coin_to, valid_for_seconds): # TODO: adjust if valid_for_seconds < 10 * 60: raise ValueError('Offer TTL too low') if valid_for_seconds > 48 * 60 * 60: raise ValueError('Offer TTL too high') def validateBidValidTime(self, offer_type, coin_from, coin_to, valid_for_seconds): # TODO: adjust if valid_for_seconds < 10 * 60: raise ValueError('Bid TTL too low') if valid_for_seconds > 24 * 60 * 60: raise ValueError('Bid TTL too high') def validateBidAmount(self, offer, bid_amount, bid_rate): ensure(bid_amount >= offer.min_bid_amount, 'Bid amount below minimum') ensure(bid_amount <= offer.amount_from, 'Bid amount above offer amount') if not offer.amount_negotiable: ensure(offer.amount_from == bid_amount, 'Bid amount must match offer amount.') if not offer.rate_negotiable: ensure(offer.rate == bid_rate, 'Bid rate must match offer rate.') def getOfferAddressTo(self, extra_options): if 'addr_send_to' in extra_options: return extra_options['addr_send_to'] return self.network_addr def postOffer(self, coin_from, coin_to, amount, rate, min_bid_amount, swap_type, lock_type=TxLockTypes.SEQUENCE_LOCK_TIME, lock_value=48 * 60 * 60, auto_accept_bids=False, addr_send_from=None, extra_options={}): # Offer to send offer.amount_from of coin_from in exchange for offer.amount_from * offer.rate of coin_to ensure(coin_from != coin_to, 'coin_from == coin_to') try: coin_from_t = Coins(coin_from) ci_from = self.ci(coin_from_t) except Exception: raise ValueError('Unknown coin from type') try: coin_to_t = Coins(coin_to) ci_to = self.ci(coin_to_t) except Exception: raise ValueError('Unknown coin to type') valid_for_seconds = extra_options.get('valid_for_seconds', 60 * 60) self.validateSwapType(coin_from_t, coin_to_t, swap_type) self.validateOfferAmounts(coin_from_t, coin_to_t, amount, rate, min_bid_amount) self.validateOfferLockValue(coin_from_t, coin_to_t, lock_type, lock_value) self.validateOfferValidTime(swap_type, coin_from_t, coin_to_t, valid_for_seconds) offer_addr_to = self.getOfferAddressTo(extra_options) self.mxDB.acquire() session = None try: self.checkSynced(coin_from_t, coin_to_t) offer_addr = self.newSMSGAddress(use_type=AddressTypes.OFFER)[0] if addr_send_from is None else addr_send_from offer_created_at = int(time.time()) msg_buf = OfferMessage() msg_buf.protocol_version = 1 msg_buf.coin_from = int(coin_from) msg_buf.coin_to = int(coin_to) msg_buf.amount_from = int(amount) msg_buf.rate = int(rate) msg_buf.min_bid_amount = int(min_bid_amount) msg_buf.time_valid = valid_for_seconds msg_buf.lock_type = lock_type msg_buf.lock_value = lock_value msg_buf.swap_type = swap_type msg_buf.amount_negotiable = extra_options.get('amount_negotiable', False) msg_buf.rate_negotiable = extra_options.get('rate_negotiable', False) if msg_buf.amount_negotiable or msg_buf.rate_negotiable: ensure(auto_accept_bids is False, 'Auto-accept unavailable when amount or rate are variable') if 'from_fee_override' in extra_options: msg_buf.fee_rate_from = make_int(extra_options['from_fee_override'], self.ci(coin_from).exp()) else: # TODO: conf_target = ci_from.settings.get('conf_target', 2) conf_target = 2 if 'from_fee_conf_target' in extra_options: conf_target = extra_options['from_fee_conf_target'] fee_rate, fee_src = self.getFeeRateForCoin(coin_from, conf_target) if 'from_fee_multiplier_percent' in extra_options: fee_rate *= extra_options['fee_multiplier'] / 100.0 msg_buf.fee_rate_from = make_int(fee_rate, self.ci(coin_from).exp()) if 'to_fee_override' in extra_options: msg_buf.fee_rate_to = make_int(extra_options['to_fee_override'], self.ci(coin_to).exp()) else: # TODO: conf_target = ci_to.settings.get('conf_target', 2) conf_target = 2 if 'to_fee_conf_target' in extra_options: conf_target = extra_options['to_fee_conf_target'] fee_rate, fee_src = self.getFeeRateForCoin(coin_to, conf_target) if 'to_fee_multiplier_percent' in extra_options: fee_rate *= extra_options['fee_multiplier'] / 100.0 msg_buf.fee_rate_to = make_int(fee_rate, self.ci(coin_to).exp()) if swap_type == SwapTypes.XMR_SWAP: xmr_offer = XmrOffer() # Delay before the chain a lock refund tx can be mined xmr_offer.lock_time_1 = ci_from.getExpectedSequence(lock_type, lock_value) # Delay before the follower can spend from the chain a lock refund tx xmr_offer.lock_time_2 = ci_from.getExpectedSequence(lock_type, lock_value) xmr_offer.a_fee_rate = msg_buf.fee_rate_from xmr_offer.b_fee_rate = msg_buf.fee_rate_to # Unused: TODO - Set priority? proof_of_funds_hash = getOfferProofOfFundsHash(msg_buf, offer_addr) proof_addr, proof_sig = self.getProofOfFunds(coin_from_t, int(amount), proof_of_funds_hash) # TODO: For now proof_of_funds is just a client side check, may need to be sent with offers in future however. offer_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.OFFER) + offer_bytes.hex() msg_valid = max(self.SMSG_SECONDS_IN_HOUR * 1, valid_for_seconds) offer_id = self.sendSmsg(offer_addr, offer_addr_to, payload_hex, msg_valid) security_token = extra_options.get('security_token', None) if security_token is not None and len(security_token) != 20: raise ValueError('Security token must be 20 bytes long.') session = scoped_session(self.session_factory) offer = Offer( offer_id=offer_id, active_ind=1, protocol_version=msg_buf.protocol_version, coin_from=msg_buf.coin_from, coin_to=msg_buf.coin_to, amount_from=msg_buf.amount_from, rate=msg_buf.rate, min_bid_amount=msg_buf.min_bid_amount, time_valid=msg_buf.time_valid, lock_type=int(msg_buf.lock_type), lock_value=msg_buf.lock_value, swap_type=msg_buf.swap_type, amount_negotiable=msg_buf.amount_negotiable, rate_negotiable=msg_buf.rate_negotiable, addr_to=offer_addr_to, addr_from=offer_addr, created_at=offer_created_at, expire_at=offer_created_at + msg_buf.time_valid, was_sent=True, security_token=security_token) offer.setState(OfferStates.OFFER_SENT) if swap_type == SwapTypes.XMR_SWAP: xmr_offer.offer_id = offer_id session.add(xmr_offer) automation_id = extra_options.get('automation_id', -1) if automation_id == -1 and auto_accept_bids: # Use default strategy automation_id = 1 if automation_id != -1: auto_link = AutomationLink( active_ind=1, linked_type=Concepts.OFFER, linked_id=offer_id, strategy_id=automation_id, created_at=offer_created_at, repeat_limit=1, repeat_count=0) session.add(auto_link) session.add(offer) session.add(SentOffer(offer_id=offer_id)) session.commit() finally: if session: session.close() session.remove() self.mxDB.release() self.log.info('Sent OFFER %s', offer_id.hex()) return offer_id def revokeOffer(self, offer_id, security_token=None): self.log.info('Revoking offer %s', offer_id.hex()) session = None self.mxDB.acquire() try: session = scoped_session(self.session_factory) offer = session.query(Offer).filter_by(offer_id=offer_id).first() if offer.security_token is not None and offer.security_token != security_token: raise ValueError('Mismatched security token') msg_buf = OfferRevokeMessage() msg_buf.offer_msg_id = offer_id signature_enc = self.callcoinrpc(Coins.PART, 'signmessage', [offer.addr_from, offer_id.hex() + '_revoke']) msg_buf.signature = base64.b64decode(signature_enc) msg_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.OFFER_REVOKE) + msg_bytes.hex() msg_id = self.sendSmsg(offer.addr_from, self.network_addr, payload_hex, offer.time_valid) self.log.debug('Revoked offer %s in msg %s', offer_id.hex(), msg_id.hex()) finally: if session: session.close() session.remove() self.mxDB.release() def grindForEd25519Key(self, coin_type, evkey, key_path_base): ci = self.ci(coin_type) nonce = 1 while True: key_path = key_path_base + '/{}'.format(nonce) extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, key_path])['key_info']['result'] privkey = decodeWif(self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['privkey']) if ci.verifyKey(privkey): return privkey nonce += 1 if nonce > 1000: raise ValueError('grindForEd25519Key failed') def getWalletKey(self, coin_type, key_num, for_ed25519=False): evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] key_path_base = '44445555h/1h/{}/{}'.format(int(coin_type), key_num) if not for_ed25519: extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, key_path_base])['key_info']['result'] return decodeWif(self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['privkey']) return self.grindForEd25519Key(coin_type, evkey, key_path_base) def getPathKey(self, coin_from, coin_to, offer_created_at, contract_count, key_no, for_ed25519=False): evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] ci = self.ci(coin_to) days = offer_created_at // 86400 secs = offer_created_at - days * 86400 key_path_base = '44445555h/999999/{}/{}/{}/{}/{}/{}'.format(int(coin_from), int(coin_to), days, secs, contract_count, key_no) if not for_ed25519: extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, key_path_base])['key_info']['result'] return decodeWif(self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['privkey']) return self.grindForEd25519Key(coin_to, evkey, key_path_base) def getNetworkKey(self, key_num): evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] key_path = '44445556h/1h/{}'.format(int(key_num)) extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, key_path])['key_info']['result'] return decodeWif(self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['privkey']) def getContractPubkey(self, date, contract_count): account = self.callcoinrpc(Coins.PART, 'extkey', ['account']) # Derive an address to use for a contract evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] # Should the coin path be included? path = '44445555h' path += '/' + str(date.year) + '/' + str(date.month) + '/' + str(date.day) path += '/' + str(contract_count) extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, path])['key_info']['result'] pubkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['pubkey'] return bytes.fromhex(pubkey) def getContractPrivkey(self, date, contract_count): # Derive an address to use for a contract evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] path = '44445555h' path += '/' + str(date.year) + '/' + str(date.month) + '/' + str(date.day) path += '/' + str(contract_count) extkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, path])['key_info']['result'] privkey = self.callcoinrpc(Coins.PART, 'extkey', ['info', extkey])['key_info']['privkey'] raw = decodeAddress(privkey)[1:] if len(raw) > 32: raw = raw[:32] return raw def getContractSecret(self, date, contract_count): # Derive a key to use for a contract secret evkey = self.callcoinrpc(Coins.PART, 'extkey', ['account', 'default', 'true'])['evkey'] path = '44445555h/99999' path += '/' + str(date.year) + '/' + str(date.month) + '/' + str(date.day) path += '/' + str(contract_count) return hashlib.sha256(bytes(self.callcoinrpc(Coins.PART, 'extkey', ['info', evkey, path])['key_info']['result'], 'utf-8')).digest() def getReceiveAddressFromPool(self, coin_type, bid_id, tx_type): self.log.debug('Get address from pool bid_id {}, type {}, coin {}'.format(bid_id.hex(), tx_type, coin_type)) self.mxDB.acquire() try: session = scoped_session(self.session_factory) record = session.query(PooledAddress).filter(sa.and_(PooledAddress.coin_type == int(coin_type), PooledAddress.bid_id == None)).first() # noqa: E712,E711 if not record: address = self.getReceiveAddressForCoin(coin_type) record = PooledAddress( addr=address, coin_type=int(coin_type)) record.bid_id = bid_id record.tx_type = tx_type addr = record.addr session.add(record) session.commit() finally: session.close() session.remove() self.mxDB.release() return addr def returnAddressToPool(self, bid_id, tx_type): self.log.debug('Return address to pool bid_id {}, type {}'.format(bid_id.hex(), tx_type)) self.mxDB.acquire() try: session = scoped_session(self.session_factory) try: record = session.query(PooledAddress).filter(sa.and_(PooledAddress.bid_id == bid_id, PooledAddress.tx_type == tx_type)).one() self.log.debug('Returning address to pool addr {}'.format(record.addr)) record.bid_id = None session.commit() except Exception as ex: pass finally: session.close() session.remove() self.mxDB.release() def getReceiveAddressForCoin(self, coin_type): new_addr = self.ci(coin_type).getNewAddress(self.coin_clients[coin_type]['use_segwit']) self.log.debug('Generated new receive address %s for %s', new_addr, str(coin_type)) return new_addr def getRelayFeeRateForCoin(self, coin_type): return self.callcoinrpc(coin_type, 'getnetworkinfo')['relayfee'] def getFeeRateForCoin(self, coin_type, conf_target=2): chain_client_settings = self.getChainClientSettings(coin_type) override_feerate = chain_client_settings.get('override_feerate', None) if override_feerate: self.log.debug('Fee rate override used for %s: %f', str(coin_type), override_feerate) return override_feerate, 'override_feerate' return self.ci(coin_type).get_fee_rate(conf_target) def estimateWithdrawFee(self, coin_type, fee_rate): if coin_type == Coins.XMR: self.log.error('TODO: estimateWithdrawFee XMR') return None tx_vsize = self.getContractSpendTxVSize(coin_type) est_fee = (fee_rate * tx_vsize) / 1000 return est_fee def withdrawCoin(self, coin_type, value, addr_to, subfee): ci = self.ci(coin_type) self.log.info('withdrawCoin %s %s to %s %s', value, ci.ticker(), addr_to, ' subfee' if subfee else '') txid = ci.withdrawCoin(value, addr_to, subfee) self.log.debug('In txn: {}'.format(txid)) return txid def withdrawParticl(self, type_from, type_to, value, addr_to, subfee): self.log.info('withdrawParticl %s %s to %s %s %s', value, type_from, type_to, addr_to, ' subfee' if subfee else '') if type_from == 'plain': type_from = 'part' if type_to == 'plain': type_to = 'part' ci = self.ci(Coins.PART) txid = ci.sendTypeTo(type_from, type_to, value, addr_to, subfee) self.log.debug('In txn: {}'.format(txid)) return txid def cacheNewAddressForCoin(self, coin_type): self.log.debug('cacheNewAddressForCoin %s', coin_type) key_str = 'receive_addr_' + chainparams[coin_type]['name'] addr = self.getReceiveAddressForCoin(coin_type) self.setStringKV(key_str, addr) return addr def getCachedMainWalletAddress(self, ci): db_key = 'main_wallet_addr_' + ci.coin_name().lower() cached_addr = self.getStringKV(db_key) if cached_addr is not None: return cached_addr self.log.warning(f'Setting {db_key}') main_address = ci.getMainWalletAddress() self.setStringKV(db_key, main_address) return main_address def checkWalletSeed(self, c): ci = self.ci(c) if c == Coins.PART: return True # TODO if c == Coins.XMR: expect_address = self.getCachedMainWalletAddress(ci) if expect_address is None: self.log.warning('Can\'t find expected main wallet address for coin {}'.format(ci.coin_name())) return False if expect_address == ci.getMainWalletAddress(): ci.setWalletSeedWarning(False) return True self.log.warning('Wallet for coin {} not derived from swap seed.'.format(ci.coin_name())) return False expect_seedid = self.getStringKV('main_wallet_seedid_' + ci.coin_name().lower()) if expect_seedid is None: self.log.warning('Can\'t find expected wallet seed id for coin {}'.format(ci.coin_name())) return False if expect_seedid == ci.getWalletSeedID(): ci.setWalletSeedWarning(False) return True self.log.warning('Wallet for coin {} not derived from swap seed.'.format(ci.coin_name())) return False def reseedWallet(self, coin_type): self.log.info('reseedWallet %s', coin_type) ci = self.ci(coin_type) if ci.knownWalletSeed(): raise ValueError('{} wallet seed is already derived from the particl mnemonic'.format(ci.coin_name())) self.initialiseWallet(coin_type) # TODO: How to scan pruned blocks? if not self.checkWalletSeed(coin_type): if coin_type == Coins.XMR: raise ValueError('TODO: How to reseed XMR wallet?') else: raise ValueError('Wallet seed doesn\'t match expected.') def getCachedAddressForCoin(self, coin_type): self.log.debug('getCachedAddressForCoin %s', coin_type) # TODO: auto refresh after used key_str = 'receive_addr_' + chainparams[coin_type]['name'] self.mxDB.acquire() try: session = scoped_session(self.session_factory) try: addr = session.query(DBKVString).filter_by(key=key_str).first().value except Exception: addr = self.getReceiveAddressForCoin(coin_type) session.add(DBKVString( key=key_str, value=addr )) session.commit() finally: session.close() session.remove() self.mxDB.release() return addr def getCachedStealthAddressForCoin(self, coin_type): self.log.debug('getCachedStealthAddressForCoin %s', coin_type) ci = self.ci(coin_type) key_str = 'stealth_addr_' + ci.coin_name().lower() self.mxDB.acquire() try: session = scoped_session(self.session_factory) try: addr = session.query(DBKVString).filter_by(key=key_str).first().value except Exception: addr = ci.getNewStealthAddress() self.log.info('Generated new stealth address for %s', coin_type) session.add(DBKVString( key=key_str, value=addr )) session.commit() finally: session.close() session.remove() self.mxDB.release() return addr def getCachedWalletRestoreHeight(self, ci): self.log.debug('getCachedWalletRestoreHeight %s', ci.coin_name()) key_str = 'restore_height_' + ci.coin_name().lower() self.mxDB.acquire() try: session = scoped_session(self.session_factory) try: wrh = session.query(DBKVInt).filter_by(key=key_str).first().value except Exception: wrh = ci.getWalletRestoreHeight() self.log.info('Found restore height for %s, block %d', ci.coin_name(), wrh) session.add(DBKVInt( key=key_str, value=wrh )) session.commit() finally: session.close() session.remove() self.mxDB.release() return wrh def getWalletRestoreHeight(self, ci): wrh = ci._restore_height if wrh is not None: return wrh found_height = self.getCachedWalletRestoreHeight(ci) ci.setWalletRestoreHeight(found_height) return found_height def getNewContractId(self): self.mxDB.acquire() try: self._contract_count += 1 session = scoped_session(self.session_factory) session.execute('UPDATE kv_int SET value = {} WHERE KEY="contract_count"'.format(self._contract_count)) session.commit() finally: session.close() session.remove() self.mxDB.release() return self._contract_count def getUnspentsByAddr(self, coin_type): ci = self.ci(coin_type) unspent_addr = dict() unspent = self.callcoinrpc(coin_type, 'listunspent') for u in unspent: if u['spendable'] is not True: continue unspent_addr[u['address']] = unspent_addr.get(u['address'], 0) + ci.make_int(u['amount'], r=1) return unspent_addr def getProofOfFunds(self, coin_type, amount_for, extra_commit_bytes): ci = self.ci(coin_type) self.log.debug('getProofOfFunds %s %s', ci.coin_name(), ci.format_amount(amount_for)) if self.coin_clients[coin_type]['connection_type'] != 'rpc': return (None, None) # TODO: Lock unspent and use same output/s to fund bid unspent_addr = self.getUnspentsByAddr(coin_type) sign_for_addr = None for addr, value in unspent_addr.items(): if value >= amount_for: sign_for_addr = addr break ensure(sign_for_addr is not None, 'Could not find address with enough funds for proof') self.log.debug('sign_for_addr %s', sign_for_addr) if self.coin_clients[coin_type]['use_segwit']: # TODO: Use isSegwitAddress when scantxoutset can use combo # 'Address does not refer to key' for non p2pkh addrinfo = self.callcoinrpc(coin_type, 'getaddressinfo', [sign_for_addr]) pkh = addrinfo['scriptPubKey'][4:] sign_for_addr = encodeAddress(bytes((chainparams[coin_type][self.chain]['pubkey_address'],)) + bytes.fromhex(pkh)) self.log.debug('sign_for_addr converted %s', sign_for_addr) signature = self.callcoinrpc(coin_type, 'signmessage', [sign_for_addr, sign_for_addr + '_swap_proof_' + extra_commit_bytes.hex()]) return (sign_for_addr, signature) def saveBidInSession(self, bid_id, bid, session, xmr_swap=None, save_in_progress=None): session.add(bid) if bid.initiate_tx: session.add(bid.initiate_tx) if bid.participate_tx: session.add(bid.participate_tx) if bid.xmr_a_lock_tx: session.add(bid.xmr_a_lock_tx) if bid.xmr_a_lock_spend_tx: session.add(bid.xmr_a_lock_spend_tx) if bid.xmr_b_lock_tx: session.add(bid.xmr_b_lock_tx) for tx_type, tx in bid.txns.items(): session.add(tx) if xmr_swap is not None: session.add(xmr_swap) if save_in_progress is not None: if not isinstance(save_in_progress, Offer): raise ValueError('Must specify offer for save_in_progress') self.swaps_in_progress[bid_id] = (bid, save_in_progress) # (bid, offer) def saveBid(self, bid_id, bid, xmr_swap=None): self.mxDB.acquire() try: session = scoped_session(self.session_factory) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() finally: session.close() session.remove() self.mxDB.release() def saveToDB(self, db_record): self.mxDB.acquire() try: session = scoped_session(self.session_factory) session.add(db_record) session.commit() finally: session.close() session.remove() self.mxDB.release() def createActionInSession(self, delay, action_type, linked_id, session): self.log.debug('createAction %d %s', action_type, linked_id.hex()) now = int(time.time()) action = Action( active_ind=1, created_at=now, trigger_at=now + delay, action_type=action_type, linked_id=linked_id) session.add(action) def createAction(self, delay, action_type, linked_id): # self.log.debug('createAction %d %s', action_type, linked_id.hex()) self.mxDB.acquire() try: session = scoped_session(self.session_factory) self.createActionInSession(delay, action_type, linked_id, session) session.commit() finally: session.close() session.remove() self.mxDB.release() def logEvent(self, linked_type, linked_id, event_type, event_msg, session): entry = EventLog( active_ind=1, created_at=int(time.time()), linked_type=linked_type, linked_id=linked_id, event_type=int(event_type), event_msg=event_msg) if session is not None: session.add(entry) return self.mxDB.acquire() try: session = scoped_session(self.session_factory) session.add(entry) session.commit() finally: session.close() session.remove() self.mxDB.release() def logBidEvent(self, bid_id, event_type, event_msg, session): self.log.debug('logBidEvent %s %s', bid_id.hex(), event_type) self.logEvent(Concepts.BID, bid_id, event_type, event_msg, session) def countBidEvents(self, bid, event_type, session): q = session.execute('SELECT COUNT(*) FROM eventlog WHERE linked_type = {} AND linked_id = x\'{}\' AND event_type = {}'.format(int(Concepts.BID), bid.bid_id.hex(), int(event_type))).first() return q[0] def getEvents(self, linked_type, linked_id): events = [] self.mxDB.acquire() try: session = scoped_session(self.session_factory) for entry in session.query(EventLog).filter(sa.and_(EventLog.linked_type == linked_type, EventLog.linked_id == linked_id)): events.append(entry) return events finally: session.close() session.remove() self.mxDB.release() def postBid(self, offer_id, amount, addr_send_from=None, extra_options={}): # Bid to send bid.amount * bid.rate of coin_to in exchange for bid.amount of coin_from self.log.debug('postBid %s', offer_id.hex()) offer = self.getOffer(offer_id) ensure(offer, 'Offer not found: {}.'.format(offer_id.hex())) ensure(offer.expire_at > int(time.time()), 'Offer has expired') if offer.swap_type == SwapTypes.XMR_SWAP: return self.postXmrBid(offer_id, amount, addr_send_from, extra_options) valid_for_seconds = extra_options.get('valid_for_seconds', 60 * 10) self.validateBidValidTime(offer.swap_type, offer.coin_from, offer.coin_to, valid_for_seconds) bid_rate = extra_options.get('bid_rate', offer.rate) self.validateBidAmount(offer, amount, bid_rate) self.mxDB.acquire() try: msg_buf = BidMessage() msg_buf.protocol_version = 1 msg_buf.offer_msg_id = offer_id msg_buf.time_valid = valid_for_seconds msg_buf.amount = int(amount) # amount of coin_from msg_buf.rate = bid_rate coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) self.checkSynced(coin_from, coin_to) amount_to = int((msg_buf.amount * bid_rate) // ci_from.COIN()) now = int(time.time()) if offer.swap_type == SwapTypes.SELLER_FIRST: proof_addr, proof_sig = self.getProofOfFunds(coin_to, amount_to, offer_id) msg_buf.proof_address = proof_addr msg_buf.proof_signature = proof_sig contract_count = self.getNewContractId() msg_buf.pkhash_buyer = getKeyID(self.getContractPubkey(dt.datetime.fromtimestamp(now).date(), contract_count)) else: raise ValueError('TODO') bid_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.BID) + bid_bytes.hex() bid_addr = self.newSMSGAddress(use_type=AddressTypes.BID)[0] if addr_send_from is None else addr_send_from options = {'decodehex': True, 'ttl_is_seconds': True} msg_valid = max(self.SMSG_SECONDS_IN_HOUR * 1, valid_for_seconds) bid_id = self.sendSmsg(bid_addr, offer.addr_from, payload_hex, msg_valid) bid = Bid( protocol_version=msg_buf.protocol_version, active_ind=1, bid_id=bid_id, offer_id=offer_id, amount=msg_buf.amount, rate=msg_buf.rate, pkhash_buyer=msg_buf.pkhash_buyer, proof_address=msg_buf.proof_address, created_at=now, contract_count=contract_count, amount_to=amount_to, expire_at=now + msg_buf.time_valid, bid_addr=bid_addr, was_sent=True, chain_a_height_start=ci_from.getChainHeight(), chain_b_height_start=ci_to.getChainHeight(), ) bid.setState(BidStates.BID_SENT) try: session = scoped_session(self.session_factory) self.saveBidInSession(bid_id, bid, session) session.commit() finally: session.close() session.remove() self.log.info('Sent BID %s', bid_id.hex()) return bid_id finally: self.mxDB.release() def getOffer(self, offer_id, sent=False): self.mxDB.acquire() try: session = scoped_session(self.session_factory) return session.query(Offer).filter_by(offer_id=offer_id).first() finally: session.close() session.remove() self.mxDB.release() def loadBidTxns(self, bid, session): bid.txns = {} for stx in session.query(SwapTx).filter(sa.and_(SwapTx.bid_id == bid.bid_id)): if stx.tx_type == TxTypes.ITX: bid.initiate_tx = stx elif stx.tx_type == TxTypes.PTX: bid.participate_tx = stx elif stx.tx_type == TxTypes.XMR_SWAP_A_LOCK: bid.xmr_a_lock_tx = stx elif stx.tx_type == TxTypes.XMR_SWAP_A_LOCK_SPEND: bid.xmr_a_lock_spend_tx = stx elif stx.tx_type == TxTypes.XMR_SWAP_B_LOCK: bid.xmr_b_lock_tx = stx else: bid.txns[stx.tx_type] = stx def getXmrBidFromSession(self, session, bid_id, sent=False): bid = session.query(Bid).filter_by(bid_id=bid_id).first() xmr_swap = None if bid: xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid_id).first() self.loadBidTxns(bid, session) return bid, xmr_swap def getXmrBid(self, bid_id, sent=False): self.mxDB.acquire() try: session = scoped_session(self.session_factory) return self.getXmrBidFromSession(session, bid_id, sent) finally: session.close() session.remove() self.mxDB.release() def getXmrOfferFromSession(self, session, offer_id, sent=False): offer = session.query(Offer).filter_by(offer_id=offer_id).first() xmr_offer = None if offer: xmr_offer = session.query(XmrOffer).filter_by(offer_id=offer_id).first() return offer, xmr_offer def getXmrOffer(self, offer_id, sent=False): self.mxDB.acquire() try: session = scoped_session(self.session_factory) return self.getXmrOfferFromSession(session, offer_id, sent) finally: session.close() session.remove() self.mxDB.release() def getBid(self, bid_id, session=None): use_session = None try: if session: use_session = session else: self.mxDB.acquire() use_session = scoped_session(self.session_factory) bid = use_session.query(Bid).filter_by(bid_id=bid_id).first() if bid: self.loadBidTxns(bid, use_session) return bid finally: if session is None: use_session.close() use_session.remove() self.mxDB.release() def getBidAndOffer(self, bid_id, session=None): try: if session: use_session = session else: self.mxDB.acquire() use_session = scoped_session(self.session_factory) bid = use_session.query(Bid).filter_by(bid_id=bid_id).first() offer = None if bid: offer = use_session.query(Offer).filter_by(offer_id=bid.offer_id).first() self.loadBidTxns(bid, use_session) return bid, offer finally: if session is None: use_session.close() use_session.remove() self.mxDB.release() def getXmrBidAndOffer(self, bid_id, list_events=True): self.mxDB.acquire() try: session = scoped_session(self.session_factory) xmr_swap = None offer = None xmr_offer = None events = [] bid = session.query(Bid).filter_by(bid_id=bid_id).first() if bid: offer = session.query(Offer).filter_by(offer_id=bid.offer_id).first() if offer and offer.swap_type == SwapTypes.XMR_SWAP: xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() xmr_offer = session.query(XmrOffer).filter_by(offer_id=bid.offer_id).first() self.loadBidTxns(bid, session) if list_events: events = self.list_bid_events(bid.bid_id, session) return bid, xmr_swap, offer, xmr_offer, events finally: session.close() session.remove() self.mxDB.release() def getIdentity(self, address): self.mxDB.acquire() try: session = scoped_session(self.session_factory) identity = session.query(KnownIdentity).filter_by(address=address).first() return identity finally: session.close() session.remove() self.mxDB.release() def updateIdentity(self, address, label): self.mxDB.acquire() try: session = scoped_session(self.session_factory) identity = session.query(KnownIdentity).filter_by(address=address).first() if identity is None: identity = KnownIdentity(address=address) identity.label = label session.add(identity) session.commit() finally: session.close() session.remove() self.mxDB.release() def list_bid_events(self, bid_id, session): query_str = 'SELECT created_at, event_type, event_msg FROM eventlog ' + \ 'WHERE active_ind = 1 AND linked_type = {} AND linked_id = x\'{}\' '.format(Concepts.BID, bid_id.hex()) q = session.execute(query_str) events = [] for row in q: events.append({'at': row[0], 'desc': describeEventEntry(row[1], row[2])}) query_str = 'SELECT created_at, trigger_at FROM actions ' + \ 'WHERE active_ind = 1 AND linked_id = x\'{}\' '.format(bid_id.hex()) q = session.execute(query_str) for row in q: events.append({'at': row[0], 'desc': 'Delaying until: {}'.format(format_timestamp(row[1], with_seconds=True))}) return events def acceptBid(self, bid_id): self.log.info('Accepting bid %s', bid_id.hex()) bid, offer = self.getBidAndOffer(bid_id) ensure(bid, 'Bid not found') ensure(offer, 'Offer not found') # Ensure bid is still valid now = int(time.time()) ensure(bid.expire_at > now, 'Bid expired') ensure(bid.state == BidStates.BID_RECEIVED, 'Wrong bid state: {}'.format(str(BidStates(bid.state)))) if offer.swap_type == SwapTypes.XMR_SWAP: return self.acceptXmrBid(bid_id) if bid.contract_count is None: bid.contract_count = self.getNewContractId() coin_from = Coins(offer.coin_from) ci_from = self.ci(coin_from) bid_date = dt.datetime.fromtimestamp(bid.created_at).date() secret = self.getContractSecret(bid_date, bid.contract_count) secret_hash = hashlib.sha256(secret).digest() pubkey_refund = self.getContractPubkey(bid_date, bid.contract_count) pkhash_refund = getKeyID(pubkey_refund) if bid.initiate_tx is not None: self.log.warning('Initiate txn %s already exists for bid %s', bid.initiate_tx.txid, bid_id.hex()) txid = bid.initiate_tx.txid script = bid.initiate_tx.script else: if offer.lock_type < TxLockTypes.ABS_LOCK_BLOCKS: sequence = ci_from.getExpectedSequence(offer.lock_type, offer.lock_value) script = atomic_swap_1.buildContractScript(sequence, secret_hash, bid.pkhash_buyer, pkhash_refund) else: if offer.lock_type == TxLockTypes.ABS_LOCK_BLOCKS: lock_value = self.callcoinrpc(coin_from, 'getblockcount') + offer.lock_value else: lock_value = int(time.time()) + offer.lock_value self.log.debug('Initiate %s lock_value %d %d', coin_from, offer.lock_value, lock_value) script = atomic_swap_1.buildContractScript(lock_value, secret_hash, bid.pkhash_buyer, pkhash_refund, OpCodes.OP_CHECKLOCKTIMEVERIFY) p2sh = self.callcoinrpc(Coins.PART, 'decodescript', [script.hex()])['p2sh'] bid.pkhash_seller = pkhash_refund txn = self.createInitiateTxn(coin_from, bid_id, bid, script) # Store the signed refund txn in case wallet is locked when refund is possible refund_txn = self.createRefundTxn(coin_from, txn, offer, bid, script) bid.initiate_txn_refund = bytes.fromhex(refund_txn) txid = ci_from.publishTx(bytes.fromhex(txn)) self.log.debug('Submitted initiate txn %s to %s chain for bid %s', txid, ci_from.coin_name(), bid_id.hex()) bid.initiate_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.ITX, txid=bytes.fromhex(txid), tx_data=bytes.fromhex(txn), script=script, ) bid.setITxState(TxStates.TX_SENT) # Check non-bip68 final try: txid = ci_from.publishTx(bid.initiate_txn_refund) self.log.error('Submit refund_txn unexpectedly worked: ' + txid) except Exception as ex: if 'non-BIP68-final' not in str(ex) and 'non-final' not in str(ex): self.log.error('Submit refund_txn unexpected error' + str(ex)) if txid is not None: msg_buf = BidAcceptMessage() msg_buf.bid_msg_id = bid_id msg_buf.initiate_txid = bytes.fromhex(txid) msg_buf.contract_script = bytes(script) bid_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.BID_ACCEPT) + bid_bytes.hex() msg_valid = self.getAcceptBidMsgValidTime(bid) bid.accept_msg_id = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) self.log.info('Sent BID_ACCEPT %s', bid.accept_msg_id.hex()) bid.setState(BidStates.BID_ACCEPTED) self.saveBid(bid_id, bid) self.swaps_in_progress[bid_id] = (bid, offer) def postXmrBid(self, offer_id, amount, addr_send_from=None, extra_options={}): # Bid to send bid.amount * bid.rate of coin_to in exchange for bid.amount of coin_from # Send MSG1L F -> L self.log.debug('postXmrBid %s', offer_id.hex()) self.mxDB.acquire() try: offer, xmr_offer = self.getXmrOffer(offer_id) ensure(offer, 'Offer not found: {}.'.format(offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(offer_id.hex())) ensure(offer.expire_at > int(time.time()), 'Offer has expired') coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) valid_for_seconds = extra_options.get('valid_for_seconds', 60 * 10) bid_rate = extra_options.get('bid_rate', offer.rate) amount_to = int((int(amount) * bid_rate) // ci_from.COIN()) if not (self.debug and extra_options.get('debug_skip_validation', False)): self.validateBidValidTime(offer.swap_type, offer.coin_from, offer.coin_to, valid_for_seconds) self.validateBidAmount(offer, amount, bid_rate) self.checkSynced(coin_from, coin_to) balance_to = ci_to.getSpendableBalance() ensure(balance_to > amount_to, '{} spendable balance is too low: {}'.format(ci_to.coin_name(), ci_to.format_amount(balance_to))) msg_buf = XmrBidMessage() msg_buf.protocol_version = 1 msg_buf.offer_msg_id = offer_id msg_buf.time_valid = valid_for_seconds msg_buf.amount = int(amount) # Amount of coin_from msg_buf.rate = bid_rate address_out = self.getReceiveAddressFromPool(coin_from, offer_id, TxTypes.XMR_SWAP_A_LOCK) if coin_from == Coins.PART_BLIND: addrinfo = ci_from.rpc_callback('getaddressinfo', [address_out]) msg_buf.dest_af = bytes.fromhex(addrinfo['pubkey']) else: msg_buf.dest_af = ci_from.decodeAddress(address_out) bid_created_at = int(time.time()) if offer.swap_type != SwapTypes.XMR_SWAP: raise ValueError('TODO') # Follower to leader xmr_swap = XmrSwap() xmr_swap.contract_count = self.getNewContractId() xmr_swap.dest_af = msg_buf.dest_af for_ed25519 = True if coin_to == Coins.XMR else False kbvf = self.getPathKey(coin_from, coin_to, bid_created_at, xmr_swap.contract_count, KeyTypes.KBVF, for_ed25519) kbsf = self.getPathKey(coin_from, coin_to, bid_created_at, xmr_swap.contract_count, KeyTypes.KBSF, for_ed25519) kaf = self.getPathKey(coin_from, coin_to, bid_created_at, xmr_swap.contract_count, KeyTypes.KAF) xmr_swap.vkbvf = kbvf xmr_swap.pkbvf = ci_to.getPubkey(kbvf) xmr_swap.pkbsf = ci_to.getPubkey(kbsf) xmr_swap.pkaf = ci_from.getPubkey(kaf) if coin_to == Coins.XMR: xmr_swap.kbsf_dleag = ci_to.proveDLEAG(kbsf) else: xmr_swap.kbsf_dleag = xmr_swap.pkbsf xmr_swap.pkasf = xmr_swap.kbsf_dleag[0: 33] assert(xmr_swap.pkasf == ci_from.getPubkey(kbsf)) msg_buf.pkaf = xmr_swap.pkaf msg_buf.kbvf = kbvf if coin_to == Coins.XMR: msg_buf.kbsf_dleag = xmr_swap.kbsf_dleag[:16000] else: msg_buf.kbsf_dleag = xmr_swap.kbsf_dleag bid_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_FL) + bid_bytes.hex() bid_addr = self.newSMSGAddress(use_type=AddressTypes.BID)[0] if addr_send_from is None else addr_send_from options = {'decodehex': True, 'ttl_is_seconds': True} msg_valid = max(self.SMSG_SECONDS_IN_HOUR * 1, valid_for_seconds) xmr_swap.bid_id = self.sendSmsg(bid_addr, offer.addr_from, payload_hex, msg_valid) if coin_to == Coins.XMR: msg_buf2 = XmrSplitMessage( msg_id=xmr_swap.bid_id, msg_type=XmrSplitMsgTypes.BID, sequence=2, dleag=xmr_swap.kbsf_dleag[16000:32000] ) msg_bytes = msg_buf2.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_SPLIT) + msg_bytes.hex() xmr_swap.bid_msg_id2 = self.sendSmsg(bid_addr, offer.addr_from, payload_hex, msg_valid) msg_buf3 = XmrSplitMessage( msg_id=xmr_swap.bid_id, msg_type=XmrSplitMsgTypes.BID, sequence=3, dleag=xmr_swap.kbsf_dleag[32000:] ) msg_bytes = msg_buf3.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_SPLIT) + msg_bytes.hex() xmr_swap.bid_msg_id3 = self.sendSmsg(bid_addr, offer.addr_from, payload_hex, msg_valid) bid = Bid( protocol_version=msg_buf.protocol_version, active_ind=1, bid_id=xmr_swap.bid_id, offer_id=offer_id, amount=msg_buf.amount, rate=msg_buf.rate, created_at=bid_created_at, contract_count=xmr_swap.contract_count, amount_to=(msg_buf.amount * msg_buf.rate) // ci_from.COIN(), expire_at=bid_created_at + msg_buf.time_valid, bid_addr=bid_addr, was_sent=True, ) bid.chain_a_height_start = ci_from.getChainHeight() bid.chain_b_height_start = ci_to.getChainHeight() wallet_restore_height = self.getWalletRestoreHeight(ci_to) if bid.chain_b_height_start < wallet_restore_height: bid.chain_b_height_start = wallet_restore_height self.log.warning('XMR swap restore height clamped to {}'.format(wallet_restore_height)) bid.setState(BidStates.BID_SENT) try: session = scoped_session(self.session_factory) self.saveBidInSession(xmr_swap.bid_id, bid, session, xmr_swap) session.commit() finally: session.close() session.remove() self.log.info('Sent XMR_BID_FL %s', xmr_swap.bid_id.hex()) return xmr_swap.bid_id finally: self.mxDB.release() def acceptXmrBid(self, bid_id): # MSG1F and MSG2F L -> F self.log.info('Accepting xmr bid %s', bid_id.hex()) now = int(time.time()) self.mxDB.acquire() try: bid, xmr_swap = self.getXmrBid(bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) ensure(bid.expire_at > now, 'Bid expired') last_bid_state = bid.state if last_bid_state == BidStates.SWAP_DELAYING: last_bid_state = getLastBidState(bid.states) ensure(last_bid_state == BidStates.BID_RECEIVED, 'Wrong bid state: {}'.format(str(BidStates(last_bid_state)))) offer, xmr_offer = self.getXmrOffer(bid.offer_id) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) ensure(offer.expire_at > now, 'Offer has expired') coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) if xmr_swap.contract_count is None: xmr_swap.contract_count = self.getNewContractId() for_ed25519 = True if coin_to == Coins.XMR else False kbvl = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBVL, for_ed25519) kbsl = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBSL, for_ed25519) kal = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAL) xmr_swap.vkbvl = kbvl xmr_swap.pkbvl = ci_to.getPubkey(kbvl) xmr_swap.pkbsl = ci_to.getPubkey(kbsl) xmr_swap.vkbv = ci_to.sumKeys(kbvl, xmr_swap.vkbvf) ensure(ci_to.verifyKey(xmr_swap.vkbv), 'Invalid key, vkbv') xmr_swap.pkbv = ci_to.sumPubkeys(xmr_swap.pkbvl, xmr_swap.pkbvf) xmr_swap.pkbs = ci_to.sumPubkeys(xmr_swap.pkbsl, xmr_swap.pkbsf) xmr_swap.pkal = ci_from.getPubkey(kal) if coin_to == Coins.XMR: xmr_swap.kbsl_dleag = ci_to.proveDLEAG(kbsl) else: xmr_swap.kbsl_dleag = xmr_swap.pkbsl # MSG2F xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script = ci_from.createScriptLockTx( bid.amount, xmr_swap.pkal, xmr_swap.pkaf, xmr_swap.vkbv ) xmr_swap.a_lock_tx = ci_from.fundScriptLockTx(xmr_swap.a_lock_tx, xmr_offer.a_fee_rate, xmr_swap.vkbv) xmr_swap.a_lock_tx_id = ci_from.getTxid(xmr_swap.a_lock_tx) a_lock_tx_dest = ci_from.getScriptDest(xmr_swap.a_lock_tx_script) xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_refund_tx_script, xmr_swap.a_swap_refund_value = ci_from.createScriptLockRefundTx( xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script, xmr_swap.pkal, xmr_swap.pkaf, xmr_offer.lock_time_1, xmr_offer.lock_time_2, xmr_offer.a_fee_rate, xmr_swap.vkbv ) xmr_swap.a_lock_refund_tx_id = ci_from.getTxid(xmr_swap.a_lock_refund_tx) prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) xmr_swap.al_lock_refund_tx_sig = ci_from.signTx(kal, xmr_swap.a_lock_refund_tx, 0, xmr_swap.a_lock_tx_script, prevout_amount) v = ci_from.verifyTxSig(xmr_swap.a_lock_refund_tx, xmr_swap.al_lock_refund_tx_sig, xmr_swap.pkal, 0, xmr_swap.a_lock_tx_script, prevout_amount) ensure(v, 'Invalid coin A lock refund tx leader sig') pkh_refund_to = ci_from.decodeAddress(self.getReceiveAddressForCoin(coin_from)) xmr_swap.a_lock_refund_spend_tx = ci_from.createScriptLockRefundSpendTx( xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_refund_tx_script, pkh_refund_to, xmr_offer.a_fee_rate, xmr_swap.vkbv ) xmr_swap.a_lock_refund_spend_tx_id = ci_from.getTxid(xmr_swap.a_lock_refund_spend_tx) # Double check txns before sending self.log.debug('Bid: {} - Double checking chain A lock txns are valid before sending bid accept.'.format(bid_id.hex())) check_lock_tx_inputs = False # TODO: check_lock_tx_inputs without txindex _, xmr_swap.a_lock_tx_vout = ci_from.verifyLockTx( xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script, bid.amount, xmr_swap.pkal, xmr_swap.pkaf, xmr_offer.a_fee_rate, check_lock_tx_inputs, xmr_swap.vkbv) _, _, lock_refund_vout = ci_from.verifyLockRefundTx( xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_tx, xmr_swap.a_lock_refund_tx_script, xmr_swap.a_lock_tx_id, xmr_swap.a_lock_tx_vout, xmr_offer.lock_time_1, xmr_swap.a_lock_tx_script, xmr_swap.pkal, xmr_swap.pkaf, xmr_offer.lock_time_2, bid.amount, xmr_offer.a_fee_rate, xmr_swap.vkbv) ci_from.verifyLockRefundSpendTx( xmr_swap.a_lock_refund_spend_tx, xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_refund_tx_id, xmr_swap.a_lock_refund_tx_script, xmr_swap.pkal, lock_refund_vout, xmr_swap.a_swap_refund_value, xmr_offer.a_fee_rate, xmr_swap.vkbv) msg_buf = XmrBidAcceptMessage() msg_buf.bid_msg_id = bid_id msg_buf.pkal = xmr_swap.pkal msg_buf.kbvl = kbvl if coin_to == Coins.XMR: msg_buf.kbsl_dleag = xmr_swap.kbsl_dleag[:16000] else: msg_buf.kbsl_dleag = xmr_swap.kbsl_dleag # MSG2F msg_buf.a_lock_tx = xmr_swap.a_lock_tx msg_buf.a_lock_tx_script = xmr_swap.a_lock_tx_script msg_buf.a_lock_refund_tx = xmr_swap.a_lock_refund_tx msg_buf.a_lock_refund_tx_script = xmr_swap.a_lock_refund_tx_script msg_buf.a_lock_refund_spend_tx = xmr_swap.a_lock_refund_spend_tx msg_buf.al_lock_refund_tx_sig = xmr_swap.al_lock_refund_tx_sig msg_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_ACCEPT_LF) + msg_bytes.hex() msg_valid = self.getAcceptBidMsgValidTime(bid) bid.accept_msg_id = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) xmr_swap.bid_accept_msg_id = bid.accept_msg_id if coin_to == Coins.XMR: msg_buf2 = XmrSplitMessage( msg_id=bid_id, msg_type=XmrSplitMsgTypes.BID_ACCEPT, sequence=2, dleag=xmr_swap.kbsl_dleag[16000:32000] ) msg_bytes = msg_buf2.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_SPLIT) + msg_bytes.hex() xmr_swap.bid_accept_msg_id2 = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) msg_buf3 = XmrSplitMessage( msg_id=bid_id, msg_type=XmrSplitMsgTypes.BID_ACCEPT, sequence=3, dleag=xmr_swap.kbsl_dleag[32000:] ) msg_bytes = msg_buf3.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_SPLIT) + msg_bytes.hex() xmr_swap.bid_accept_msg_id3 = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) bid.setState(BidStates.BID_ACCEPTED) self.saveBid(bid_id, bid, xmr_swap=xmr_swap) # Add to swaps_in_progress only when waiting on txns self.log.info('Sent XMR_BID_ACCEPT_LF %s', bid_id.hex()) return bid_id finally: self.mxDB.release() def abandonBid(self, bid_id): self.log.info('Abandoning Bid %s', bid_id.hex()) self.mxDB.acquire() try: session = scoped_session(self.session_factory) bid = session.query(Bid).filter_by(bid_id=bid_id).first() ensure(bid, 'Bid not found') offer = session.query(Offer).filter_by(offer_id=bid.offer_id).first() ensure(offer, 'Offer not found') # Mark bid as abandoned, no further processing will be done bid.setState(BidStates.BID_ABANDONED) self.deactivateBid(session, offer, bid) session.add(bid) session.commit() finally: session.close() session.remove() self.mxDB.release() def setBidError(self, bid_id, bid, error_str, save_bid=True, xmr_swap=None): self.log.error('Bid %s - Error: %s', bid_id.hex(), error_str) bid.setState(BidStates.BID_ERROR) bid.state_note = 'error msg: ' + error_str if save_bid: self.saveBid(bid_id, bid, xmr_swap=xmr_swap) def createInitiateTxn(self, coin_type, bid_id, bid, initiate_script): if self.coin_clients[coin_type]['connection_type'] != 'rpc': return None ci = self.ci(coin_type) if self.coin_clients[coin_type]['use_segwit']: addr_to = ci.encode_p2wsh(getP2WSH(initiate_script)) else: addr_to = ci.encode_p2sh(initiate_script) self.log.debug('Create initiate txn for coin %s to %s for bid %s', str(coin_type), addr_to, bid_id.hex()) txn = self.callcoinrpc(coin_type, 'createrawtransaction', [[], {addr_to: ci.format_amount(bid.amount)}]) options = { 'lockUnspents': True, 'conf_target': self.coin_clients[coin_type]['conf_target'], } txn_funded = self.callcoinrpc(coin_type, 'fundrawtransaction', [txn, options])['hex'] txn_signed = self.callcoinrpc(coin_type, 'signrawtransactionwithwallet', [txn_funded])['hex'] return txn_signed def deriveParticipateScript(self, bid_id, bid, offer): self.log.debug('deriveParticipateScript for bid %s', bid_id.hex()) coin_to = Coins(offer.coin_to) ci_to = self.ci(coin_to) bid_date = dt.datetime.fromtimestamp(bid.created_at).date() secret_hash = atomic_swap_1.extractScriptSecretHash(bid.initiate_tx.script) pkhash_seller = bid.pkhash_seller pkhash_buyer_refund = bid.pkhash_buyer # Participate txn is locked for half the time of the initiate txn lock_value = offer.lock_value // 2 if offer.lock_type < TxLockTypes.ABS_LOCK_BLOCKS: sequence = ci_to.getExpectedSequence(offer.lock_type, lock_value) participate_script = atomic_swap_1.buildContractScript(sequence, secret_hash, pkhash_seller, pkhash_buyer_refund) else: # Lock from the height or time of the block containing the initiate txn coin_from = Coins(offer.coin_from) initiate_tx_block_hash = self.callcoinrpc(coin_from, 'getblockhash', [bid.initiate_tx.chain_height, ]) initiate_tx_block_time = int(self.callcoinrpc(coin_from, 'getblock', [initiate_tx_block_hash, ])['time']) if offer.lock_type == TxLockTypes.ABS_LOCK_BLOCKS: # Walk the coin_to chain back until block time matches blockchaininfo = self.callcoinrpc(coin_to, 'getblockchaininfo') cblock_hash = blockchaininfo['bestblockhash'] cblock_height = blockchaininfo['blocks'] max_tries = 1000 for i in range(max_tries): prev_block = self.callcoinrpc(coin_to, 'getblock', [cblock_hash, ]) self.log.debug('prev_block %s', str(prev_block)) if prev_block['time'] <= initiate_tx_block_time: break # cblock_hash and height are out of step unless loop breaks cblock_hash = prev_block['previousblockhash'] cblock_height = prev_block['height'] ensure(prev_block['time'] <= initiate_tx_block_time, 'Block not found for lock height') self.log.debug('Setting lock value from height of block %s %s', coin_to, cblock_hash) contract_lock_value = cblock_height + lock_value else: self.log.debug('Setting lock value from time of block %s %s', coin_from, initiate_tx_block_hash) contract_lock_value = initiate_tx_block_time + lock_value self.log.debug('participate %s lock_value %d %d', coin_to, lock_value, contract_lock_value) participate_script = atomic_swap_1.buildContractScript(contract_lock_value, secret_hash, pkhash_seller, pkhash_buyer_refund, OpCodes.OP_CHECKLOCKTIMEVERIFY) return participate_script def createParticipateTxn(self, bid_id, bid, offer, participate_script): self.log.debug('createParticipateTxn') offer_id = bid.offer_id coin_to = Coins(offer.coin_to) if self.coin_clients[coin_to]['connection_type'] != 'rpc': return None ci = self.ci(coin_to) amount_to = bid.amount_to # Check required? assert(amount_to == (bid.amount * bid.rate) // self.ci(offer.coin_from).COIN()) if bid.debug_ind == DebugTypes.MAKE_INVALID_PTX: amount_to -= 1 self.log.debug('bid %s: Make invalid PTx for testing: %d.', bid_id.hex(), bid.debug_ind) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), None) if self.coin_clients[coin_to]['use_segwit']: p2wsh = getP2WSH(participate_script) addr_to = ci.encode_p2wsh(p2wsh) else: addr_to = ci.encode_p2sh(participate_script) txn = self.callcoinrpc(coin_to, 'createrawtransaction', [[], {addr_to: ci.format_amount(amount_to)}]) options = { 'lockUnspents': True, 'conf_target': self.coin_clients[coin_to]['conf_target'], } txn_funded = self.callcoinrpc(coin_to, 'fundrawtransaction', [txn, options])['hex'] txn_signed = self.callcoinrpc(coin_to, 'signrawtransactionwithwallet', [txn_funded])['hex'] refund_txn = self.createRefundTxn(coin_to, txn_signed, offer, bid, participate_script, tx_type=TxTypes.PTX_REFUND) bid.participate_txn_refund = bytes.fromhex(refund_txn) chain_height = self.callcoinrpc(coin_to, 'getblockcount') txjs = self.callcoinrpc(coin_to, 'decoderawtransaction', [txn_signed]) txid = txjs['txid'] if self.coin_clients[coin_to]['use_segwit']: vout = getVoutByP2WSH(txjs, p2wsh.hex()) else: vout = getVoutByAddress(txjs, addr_to) self.addParticipateTxn(bid_id, bid, coin_to, txid, vout, chain_height) bid.participate_tx.script = participate_script bid.participate_tx.tx_data = bytes.fromhex(txn_signed) return txn_signed def getContractSpendTxVSize(self, coin_type, redeem=True): tx_vsize = 5 # Add a few bytes, sequence in script takes variable amount of bytes if coin_type == Coins.PART: tx_vsize += 204 if redeem else 187 if self.coin_clients[coin_type]['use_segwit']: tx_vsize += 143 if redeem else 134 else: tx_vsize += 323 if redeem else 287 return tx_vsize def createRedeemTxn(self, coin_type, bid, for_txn_type='participate', addr_redeem_out=None, fee_rate=None): self.log.debug('createRedeemTxn for coin %s', str(coin_type)) ci = self.ci(coin_type) if for_txn_type == 'participate': prev_txnid = bid.participate_tx.txid.hex() prev_n = bid.participate_tx.vout txn_script = bid.participate_tx.script prev_amount = bid.amount_to else: prev_txnid = bid.initiate_tx.txid.hex() prev_n = bid.initiate_tx.vout txn_script = bid.initiate_tx.script prev_amount = bid.amount if self.coin_clients[coin_type]['use_segwit']: prev_p2wsh = getP2WSH(txn_script) script_pub_key = prev_p2wsh.hex() else: script_pub_key = getP2SHScriptForHash(getKeyID(txn_script)).hex() prevout = { 'txid': prev_txnid, 'vout': prev_n, 'scriptPubKey': script_pub_key, 'redeemScript': txn_script.hex(), 'amount': ci.format_amount(prev_amount)} bid_date = dt.datetime.fromtimestamp(bid.created_at).date() wif_prefix = chainparams[Coins.PART][self.chain]['key_prefix'] pubkey = self.getContractPubkey(bid_date, bid.contract_count) privkey = toWIF(wif_prefix, self.getContractPrivkey(bid_date, bid.contract_count)) secret = bid.recovered_secret if secret is None: secret = self.getContractSecret(bid_date, bid.contract_count) ensure(len(secret) == 32, 'Bad secret length') if self.coin_clients[coin_type]['connection_type'] != 'rpc': return None prevout_s = ' in={}:{}'.format(prev_txnid, prev_n) if fee_rate is None: fee_rate, fee_src = self.getFeeRateForCoin(coin_type) tx_vsize = self.getContractSpendTxVSize(coin_type) tx_fee = (fee_rate * tx_vsize) / 1000 self.log.debug('Redeem tx fee %s, rate %s', ci.format_amount(tx_fee, conv_int=True, r=1), str(fee_rate)) amount_out = prev_amount - ci.make_int(tx_fee, r=1) ensure(amount_out > 0, 'Amount out <= 0') if addr_redeem_out is None: addr_redeem_out = self.getReceiveAddressFromPool(coin_type, bid.bid_id, TxTypes.PTX_REDEEM if for_txn_type == 'participate' else TxTypes.ITX_REDEEM) assert(addr_redeem_out is not None) if self.coin_clients[coin_type]['use_segwit']: # Change to btc hrp addr_redeem_out = self.encodeSegwit(Coins.PART, self.decodeSegwit(coin_type, addr_redeem_out)) else: addr_redeem_out = replaceAddrPrefix(addr_redeem_out, Coins.PART, self.chain) self.log.debug('addr_redeem_out %s', addr_redeem_out) output_to = ' outaddr={}:{}'.format(ci.format_amount(amount_out), addr_redeem_out) if coin_type == Coins.PART: redeem_txn = self.calltx('-create' + prevout_s + output_to) else: redeem_txn = self.calltx('-btcmode -create nversion=2' + prevout_s + output_to) options = {} if self.coin_clients[coin_type]['use_segwit']: options['force_segwit'] = True redeem_sig = self.callcoinrpc(Coins.PART, 'createsignaturewithkey', [redeem_txn, prevout, privkey, 'ALL', options]) if coin_type == Coins.PART or self.coin_clients[coin_type]['use_segwit']: witness_stack = [ redeem_sig, pubkey.hex(), secret.hex(), '01', txn_script.hex()] redeem_txn = self.calltx(redeem_txn + ' witness=0:' + ':'.join(witness_stack)) else: script = format(len(redeem_sig) // 2, '02x') + redeem_sig script += format(33, '02x') + pubkey.hex() script += format(32, '02x') + secret.hex() script += format(OpCodes.OP_1, '02x') script += format(OpCodes.OP_PUSHDATA1, '02x') + format(len(txn_script), '02x') + txn_script.hex() redeem_txn = self.calltx(redeem_txn + ' scriptsig=0:' + script) ro = self.callcoinrpc(Coins.PART, 'verifyrawtransaction', [redeem_txn, [prevout]]) ensure(ro['inputs_valid'] is True, 'inputs_valid is false') # outputs_valid will be false if not a Particl txn # ensure(ro['complete'] is True, 'complete is false') ensure(ro['validscripts'] == 1, 'validscripts != 1') if self.debug: # Check fee if self.coin_clients[coin_type]['connection_type'] == 'rpc': redeem_txjs = self.callcoinrpc(coin_type, 'decoderawtransaction', [redeem_txn]) self.log.debug('vsize paid, actual vsize %d %d', tx_vsize, redeem_txjs['vsize']) ensure(tx_vsize >= redeem_txjs['vsize'], 'Underpaid fee') redeem_txjs = self.callcoinrpc(Coins.PART, 'decoderawtransaction', [redeem_txn]) self.log.debug('Have valid redeem txn %s for contract %s tx %s', redeem_txjs['txid'], for_txn_type, prev_txnid) return redeem_txn def createRefundTxn(self, coin_type, txn, offer, bid, txn_script, addr_refund_out=None, tx_type=TxTypes.ITX_REFUND): self.log.debug('createRefundTxn for coin %s', Coins(coin_type).name) if self.coin_clients[coin_type]['connection_type'] != 'rpc': return None txjs = self.callcoinrpc(Coins.PART, 'decoderawtransaction', [txn]) if self.coin_clients[coin_type]['use_segwit']: p2wsh = getP2WSH(txn_script) vout = getVoutByP2WSH(txjs, p2wsh.hex()) else: addr_to = self.ci(Coins.PART).encode_p2sh(txn_script) vout = getVoutByAddress(txjs, addr_to) bid_date = dt.datetime.fromtimestamp(bid.created_at).date() wif_prefix = chainparams[Coins.PART][self.chain]['key_prefix'] pubkey = self.getContractPubkey(bid_date, bid.contract_count) privkey = toWIF(wif_prefix, self.getContractPrivkey(bid_date, bid.contract_count)) prev_amount = txjs['vout'][vout]['value'] prevout = { 'txid': txjs['txid'], 'vout': vout, 'scriptPubKey': txjs['vout'][vout]['scriptPubKey']['hex'], 'redeemScript': txn_script.hex(), 'amount': prev_amount} lock_value = DeserialiseNum(txn_script, 64) if offer.lock_type < TxLockTypes.ABS_LOCK_BLOCKS: sequence = lock_value else: sequence = 1 prevout_s = ' in={}:{}:{}'.format(txjs['txid'], vout, sequence) fee_rate, fee_src = self.getFeeRateForCoin(coin_type) tx_vsize = self.getContractSpendTxVSize(coin_type, False) tx_fee = (fee_rate * tx_vsize) / 1000 ci = self.ci(coin_type) self.log.debug('Refund tx fee %s, rate %s', ci.format_amount(tx_fee, conv_int=True, r=1), str(fee_rate)) amount_out = ci.make_int(prev_amount, r=1) - ci.make_int(tx_fee, r=1) if amount_out <= 0: raise ValueError('Refund amount out <= 0') if addr_refund_out is None: addr_refund_out = self.getReceiveAddressFromPool(coin_type, bid.bid_id, tx_type) ensure(addr_refund_out is not None, 'addr_refund_out is null') if self.coin_clients[coin_type]['use_segwit']: # Change to btc hrp addr_refund_out = self.encodeSegwit(Coins.PART, self.decodeSegwit(coin_type, addr_refund_out)) else: addr_refund_out = replaceAddrPrefix(addr_refund_out, Coins.PART, self.chain) self.log.debug('addr_refund_out %s', addr_refund_out) output_to = ' outaddr={}:{}'.format(ci.format_amount(amount_out), addr_refund_out) if coin_type == Coins.PART: refund_txn = self.calltx('-create' + prevout_s + output_to) else: refund_txn = self.calltx('-btcmode -create nversion=2' + prevout_s + output_to) if offer.lock_type == TxLockTypes.ABS_LOCK_BLOCKS or offer.lock_type == TxLockTypes.ABS_LOCK_TIME: refund_txn = self.calltx('{} locktime={}'.format(refund_txn, lock_value)) options = {} if self.coin_clients[coin_type]['use_segwit']: options['force_segwit'] = True refund_sig = self.callcoinrpc(Coins.PART, 'createsignaturewithkey', [refund_txn, prevout, privkey, 'ALL', options]) if coin_type == Coins.PART or self.coin_clients[coin_type]['use_segwit']: witness_stack = [ refund_sig, pubkey.hex(), '', # SCRIPT_VERIFY_MINIMALIF txn_script.hex()] refund_txn = self.calltx(refund_txn + ' witness=0:' + ':'.join(witness_stack)) else: script = format(len(refund_sig) // 2, '02x') + refund_sig script += format(33, '02x') + pubkey.hex() script += format(OpCodes.OP_0, '02x') script += format(OpCodes.OP_PUSHDATA1, '02x') + format(len(txn_script), '02x') + txn_script.hex() refund_txn = self.calltx(refund_txn + ' scriptsig=0:' + script) ro = self.callcoinrpc(Coins.PART, 'verifyrawtransaction', [refund_txn, [prevout]]) ensure(ro['inputs_valid'] is True, 'inputs_valid is false') # outputs_valid will be false if not a Particl txn # ensure(ro['complete'] is True, 'complete is false') ensure(ro['validscripts'] == 1, 'validscripts != 1') if self.debug: # Check fee if self.coin_clients[coin_type]['connection_type'] == 'rpc': refund_txjs = self.callcoinrpc(coin_type, 'decoderawtransaction', [refund_txn]) self.log.debug('vsize paid, actual vsize %d %d', tx_vsize, refund_txjs['vsize']) ensure(tx_vsize >= refund_txjs['vsize'], 'underpaid fee') refund_txjs = self.callcoinrpc(Coins.PART, 'decoderawtransaction', [refund_txn]) self.log.debug('Have valid refund txn %s for contract tx %s', refund_txjs['txid'], txjs['txid']) return refund_txn def initiateTxnConfirmed(self, bid_id, bid, offer): self.log.debug('initiateTxnConfirmed for bid %s', bid_id.hex()) bid.setState(BidStates.SWAP_INITIATED) bid.setITxState(TxStates.TX_CONFIRMED) if bid.debug_ind == DebugTypes.BUYER_STOP_AFTER_ITX: self.log.debug('bid %s: Abandoning bid for testing: %d, %s.', bid_id.hex(), bid.debug_ind, DebugTypes(bid.debug_ind).name) bid.setState(BidStates.BID_ABANDONED) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), None) return # Bid saved in checkBidState # Seller first mode, buyer participates participate_script = self.deriveParticipateScript(bid_id, bid, offer) if bid.was_sent: if bid.participate_tx is not None: self.log.warning('Participate txn %s already exists for bid %s', bid.participate_tx.txid, bid_id.hex()) else: self.log.debug('Preparing participate txn for bid %s', bid_id.hex()) coin_to = Coins(offer.coin_to) txn = self.createParticipateTxn(bid_id, bid, offer, participate_script) txid = self.ci(coin_to).publishTx(bytes.fromhex(txn)) self.log.debug('Submitted participate txn %s to %s chain for bid %s', txid, chainparams[coin_to]['name'], bid_id.hex()) bid.setPTxState(TxStates.TX_SENT) else: bid.participate_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.PTX, script=participate_script, ) # Bid saved in checkBidState def setLastHeightChecked(self, coin_type, tx_height): coin_name = self.ci(coin_type).coin_name() if tx_height < 1: tx_height = self.lookupChainHeight(coin_type) if len(self.coin_clients[coin_type]['watched_outputs']) == 0: self.coin_clients[coin_type]['last_height_checked'] = tx_height self.log.debug('Start checking %s chain at height %d', coin_name, tx_height) if self.coin_clients[coin_type]['last_height_checked'] > tx_height: self.coin_clients[coin_type]['last_height_checked'] = tx_height self.log.debug('Rewind checking of %s chain to height %d', coin_name, tx_height) return tx_height def addParticipateTxn(self, bid_id, bid, coin_type, txid_hex, vout, tx_height): # TODO: Check connection type participate_txn_height = self.setLastHeightChecked(coin_type, tx_height) if bid.participate_tx is None: bid.participate_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.PTX, ) bid.participate_tx.txid = bytes.fromhex(txid_hex) bid.participate_tx.vout = vout bid.participate_tx.chain_height = participate_txn_height # Start checking for spends of participate_txn before fully confirmed self.log.debug('Watching %s chain for spend of output %s %d', chainparams[coin_type]['name'], txid_hex, vout) self.addWatchedOutput(coin_type, bid_id, txid_hex, vout, BidStates.SWAP_PARTICIPATING) def participateTxnConfirmed(self, bid_id, bid, offer): self.log.debug('participateTxnConfirmed for bid %s', bid_id.hex()) bid.setState(BidStates.SWAP_PARTICIPATING) bid.setPTxState(TxStates.TX_CONFIRMED) # Seller redeems from participate txn if bid.was_received: ci_to = self.ci(offer.coin_to) txn = self.createRedeemTxn(ci_to.coin_type(), bid) txid = ci_to.publishTx(bytes.fromhex(txn)) self.log.debug('Submitted participate redeem txn %s to %s chain for bid %s', txid, ci_to.coin_name(), bid_id.hex()) # TX_REDEEMED will be set when spend is detected # TODO: Wait for depth? # bid saved in checkBidState def getAddressBalance(self, coin_type, address): if self.coin_clients[coin_type]['chain_lookups'] == 'explorer': explorers = self.coin_clients[coin_type]['explorers'] # TODO: random offset into explorers, try blocks for exp in explorers: return exp.getBalance(address) return self.lookupUnspentByAddress(coin_type, address, sum_output=True) def lookupChainHeight(self, coin_type): return self.callcoinrpc(coin_type, 'getblockcount') def lookupUnspentByAddress(self, coin_type, address, sum_output=False, assert_amount=None, assert_txid=None): ci = self.ci(coin_type) if self.coin_clients[coin_type]['chain_lookups'] == 'explorer': explorers = self.coin_clients[coin_type]['explorers'] # TODO: random offset into explorers, try blocks for exp in explorers: # TODO: ExplorerBitAps use only gettransaction if assert_txid is set rv = exp.lookupUnspentByAddress(address) if assert_amount is not None: ensure(rv['value'] == int(assert_amount), 'Incorrect output amount in txn {}: {} != {}.'.format(assert_txid, rv['value'], int(assert_amount))) if assert_txid is not None: ensure(rv['txid)'] == assert_txid, 'Incorrect txid') return rv raise ValueError('No explorer for lookupUnspentByAddress {}'.format(str(coin_type))) if self.coin_clients[coin_type]['connection_type'] != 'rpc': raise ValueError('No RPC connection for lookupUnspentByAddress {}'.format(str(coin_type))) if assert_txid is not None: try: ro = self.callcoinrpc(coin_type, 'getmempoolentry', [assert_txid]) self.log.debug('Tx %s found in mempool, fee %s', assert_txid, ro['fee']) # TODO: Save info return None except Exception: pass num_blocks = self.callcoinrpc(coin_type, 'getblockcount') sum_unspent = 0 self.log.debug('[rm] scantxoutset start') # scantxoutset is slow ro = self.callcoinrpc(coin_type, 'scantxoutset', ['start', ['addr({})'.format(address)]]) # TODO: Use combo(address) where possible self.log.debug('[rm] scantxoutset end') for o in ro['unspents']: if assert_txid and o['txid'] != assert_txid: continue # Verify amount if assert_amount: ensure(make_int(o['amount']) == int(assert_amount), 'Incorrect output amount in txn {}: {} != {}.'.format(assert_txid, make_int(o['amount']), int(assert_amount))) if not sum_output: if o['height'] > 0: n_conf = num_blocks - o['height'] else: n_conf = -1 return { 'txid': o['txid'], 'index': o['vout'], 'height': o['height'], 'n_conf': n_conf, 'value': ci.make_int(o['amount']), } else: sum_unspent += ci.make_int(o['amount']) if sum_output: return sum_unspent return None def checkXmrBidState(self, bid_id, bid, offer): rv = False ci_from = self.ci(Coins(offer.coin_from)) ci_to = self.ci(Coins(offer.coin_to)) session = None try: self.mxDB.acquire() session = scoped_session(self.session_factory) xmr_offer = session.query(XmrOffer).filter_by(offer_id=offer.offer_id).first() ensure(xmr_offer, 'XMR offer not found: {}.'.format(offer.offer_id.hex())) xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid.bid_id.hex())) if TxTypes.XMR_SWAP_A_LOCK_REFUND in bid.txns: refund_tx = bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND] if bid.was_received: if bid.debug_ind == DebugTypes.BID_DONT_SPEND_COIN_A_LOCK_REFUND: self.log.debug('XMR bid %s: Stalling bid for testing: %d.', bid_id.hex(), bid.debug_ind) bid.setState(BidStates.BID_STALLED_FOR_TEST) rv = True self.saveBidInSession(bid_id, bid, session, xmr_swap) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), session) session.commit() return rv if TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND not in bid.txns: try: txid_str = ci_from.publishTx(xmr_swap.a_lock_refund_spend_tx) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_REFUND_SPEND_TX_PUBLISHED, '', session) self.log.info('Submitted coin a lock refund spend tx for bid {}, txid {}'.format(bid_id.hex(), txid_str)) bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND] = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND, txid=bytes.fromhex(txid_str), ) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() except Exception as ex: self.log.debug('Trying to publish coin a lock refund spend tx: %s', str(ex)) if bid.was_sent: if xmr_swap.a_lock_refund_swipe_tx is None: self.createCoinALockRefundSwipeTx(ci_from, bid, offer, xmr_swap, xmr_offer) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() if TxTypes.XMR_SWAP_A_LOCK_REFUND_SWIPE not in bid.txns: try: txid = ci_from.publishTx(xmr_swap.a_lock_refund_swipe_tx) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_REFUND_SWIPE_TX_PUBLISHED, '', session) self.log.info('Submitted coin a lock refund swipe tx for bid {}'.format(bid_id.hex())) bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND_SWIPE] = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_REFUND_SWIPE, txid=bytes.fromhex(txid), ) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() except Exception as ex: self.log.debug('Trying to publish coin a lock refund swipe tx: %s', str(ex)) if BidStates(bid.state) == BidStates.XMR_SWAP_NOSCRIPT_TX_RECOVERED: txid_hex = bid.xmr_b_lock_tx.spend_txid.hex() found_tx = ci_to.findTxnByHash(txid_hex) if found_tx is not None: self.log.info('Found coin b lock recover tx bid %s', bid_id.hex()) rv = True # Remove from swaps_in_progress bid.setState(BidStates.XMR_SWAP_FAILED_REFUNDED) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() return rv else: # not XMR_SWAP_A_LOCK_REFUND in bid.txns if len(xmr_swap.al_lock_refund_tx_sig) > 0 and len(xmr_swap.af_lock_refund_tx_sig) > 0: try: txid = ci_from.publishTx(xmr_swap.a_lock_refund_tx) self.log.info('Submitted coin a lock refund tx for bid {}'.format(bid_id.hex())) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_REFUND_TX_PUBLISHED, '', session) bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND] = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_REFUND, txid=bytes.fromhex(txid), ) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() return rv except Exception as ex: if 'Transaction already in block chain' in str(ex): self.log.info('Found coin a lock refund tx for bid {}'.format(bid_id.hex())) txid = ci_from.getTxid(xmr_swap.a_lock_refund_tx) bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND] = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_REFUND, txid=txid, ) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() return rv state = BidStates(bid.state) if state == BidStates.SWAP_COMPLETED: rv = True # Remove from swaps_in_progress elif state == BidStates.XMR_SWAP_FAILED_REFUNDED: rv = True # Remove from swaps_in_progress elif state == BidStates.XMR_SWAP_FAILED_SWIPED: rv = True # Remove from swaps_in_progress elif state == BidStates.XMR_SWAP_MSG_SCRIPT_LOCK_SPEND_TX: if bid.xmr_a_lock_tx is None: return rv # TODO: Timeout waiting for transactions bid_changed = False a_lock_tx_dest = ci_from.getScriptDest(xmr_swap.a_lock_tx_script) # Changed from ci_from.getOutput(bid.xmr_a_lock_tx.txid, a_lock_tx_dest, bid.amount, xmr_swap) p2wsh_addr = ci_from.encode_p2wsh(a_lock_tx_dest) lock_tx_chain_info = ci_from.getLockTxHeight(bid.xmr_a_lock_tx.txid, p2wsh_addr, bid.amount, bid.chain_a_height_start) if lock_tx_chain_info is None: return rv if not bid.xmr_a_lock_tx.chain_height and lock_tx_chain_info['height'] != 0: self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_SEEN, '', session) block_header = ci_from.getBlockHeaderFromHeight(lock_tx_chain_info['height']) bid.xmr_a_lock_tx.block_hash = bytes.fromhex(block_header['hash']) bid.xmr_a_lock_tx.block_height = block_header['height'] bid.xmr_a_lock_tx.block_time = block_header['time'] # Or median_time? bid_changed = True if bid.xmr_a_lock_tx.chain_height != lock_tx_chain_info['height'] and lock_tx_chain_info['height'] != 0: bid.xmr_a_lock_tx.chain_height = lock_tx_chain_info['height'] bid_changed = True if lock_tx_chain_info['depth'] >= ci_from.blocks_confirmed: self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_CONFIRMED, '', session) bid.xmr_a_lock_tx.setState(TxStates.TX_CONFIRMED) bid.setState(BidStates.XMR_SWAP_SCRIPT_COIN_LOCKED) bid_changed = True if bid.was_sent: delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Sending xmr swap chain B lock tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.SEND_XMR_SWAP_LOCK_TX_B, bid_id, session) # bid.setState(BidStates.SWAP_DELAYING) if bid_changed: self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() elif state == BidStates.XMR_SWAP_SCRIPT_COIN_LOCKED: if bid.was_sent and bid.xmr_b_lock_tx is None: return rv bid_changed = False # Have to use findTxB instead of relying on the first seen height to detect chain reorgs found_tx = ci_to.findTxB(xmr_swap.vkbv, xmr_swap.pkbs, bid.amount_to, ci_to.blocks_confirmed, bid.chain_b_height_start, bid.was_sent) if isinstance(found_tx, int) and found_tx == -1: if self.countBidEvents(bid, EventLogTypes.LOCK_TX_B_INVALID, session) < 1: self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_INVALID, 'Detected invalid lock tx B', session) bid_changed = True elif found_tx is not None: if bid.xmr_b_lock_tx is None or not bid.xmr_b_lock_tx.chain_height: self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_SEEN, '', session) if bid.xmr_b_lock_tx is None: self.log.debug('Found {} lock tx in chain'.format(ci_to.coin_name())) b_lock_tx_id = bytes.fromhex(found_tx['txid']) bid.xmr_b_lock_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_B_LOCK, txid=b_lock_tx_id, chain_height=found_tx['height'], ) bid_changed = True else: bid.xmr_b_lock_tx.chain_height = found_tx['height'] bid_changed = True if bid.xmr_b_lock_tx and bid.xmr_b_lock_tx.chain_height is not None and bid.xmr_b_lock_tx.chain_height > 0: chain_height = ci_to.getChainHeight() if chain_height - bid.xmr_b_lock_tx.chain_height >= ci_to.blocks_confirmed: self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_CONFIRMED, '', session) bid.xmr_b_lock_tx.setState(TxStates.TX_CONFIRMED) bid.setState(BidStates.XMR_SWAP_NOSCRIPT_COIN_LOCKED) if bid.was_received: delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Releasing xmr script coin lock tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.SEND_XMR_LOCK_RELEASE, bid_id, session) if bid_changed: self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() elif state == BidStates.XMR_SWAP_LOCK_RELEASED: # Wait for script spend tx to confirm # TODO: Use explorer to get tx / block hash for getrawtransaction if bid.was_received: try: txn_hex = ci_from.getMempoolTx(xmr_swap.a_lock_spend_tx_id) self.log.info('Found lock spend txn in %s mempool, %s', ci_from.coin_name(), xmr_swap.a_lock_spend_tx_id.hex()) self.process_XMR_SWAP_A_LOCK_tx_spend(bid_id, xmr_swap.a_lock_spend_tx_id.hex(), txn_hex) except Exception as e: self.log.debug('getrawtransaction lock spend tx failed: %s', str(e)) elif state == BidStates.XMR_SWAP_SCRIPT_TX_REDEEMED: if bid.was_received and self.countQueuedActions(session, bid_id, ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_B) < 1: bid.setState(BidStates.SWAP_DELAYING) delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Redeeming coin b lock tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_B, bid_id, session) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() elif state == BidStates.XMR_SWAP_NOSCRIPT_TX_REDEEMED: txid_hex = bid.xmr_b_lock_tx.spend_txid.hex() found_tx = ci_to.findTxnByHash(txid_hex) if found_tx is not None: self.log.info('Found coin b lock spend tx bid %s', bid_id.hex()) rv = True # Remove from swaps_in_progress bid.setState(BidStates.SWAP_COMPLETED) self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() elif state == BidStates.XMR_SWAP_SCRIPT_TX_PREREFUND: if TxTypes.XMR_SWAP_A_LOCK_REFUND in bid.txns: refund_tx = bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND] if refund_tx.block_time is None: a_lock_refund_tx_dest = ci_from.getScriptDest(xmr_swap.a_lock_refund_tx_script) p2wsh_addr = ci_from.encode_p2wsh(a_lock_refund_tx_dest) lock_refund_tx_chain_info = ci_from.getLockTxHeight(refund_tx.txid, p2wsh_addr, 0, bid.chain_a_height_start) if lock_refund_tx_chain_info is not None: block_header = ci_from.getBlockHeaderFromHeight(lock_refund_tx_chain_info['height']) refund_tx.block_hash = bytes.fromhex(block_header['hash']) refund_tx.block_height = block_header['height'] refund_tx.block_time = block_header['time'] # Or median_time? self.saveBidInSession(bid_id, bid, session, xmr_swap) session.commit() except Exception as ex: raise ex finally: if session: session.close() session.remove() self.mxDB.release() return rv def checkBidState(self, bid_id, bid, offer): # assert(self.mxDB.locked()) # Return True to remove bid from in-progress list state = BidStates(bid.state) self.log.debug('checkBidState %s %s', bid_id.hex(), str(state)) if offer.swap_type == SwapTypes.XMR_SWAP: return self.checkXmrBidState(bid_id, bid, offer) save_bid = False coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) # TODO: Batch calls to scantxoutset # TODO: timeouts if state == BidStates.BID_ABANDONED: self.log.info('Deactivating abandoned bid: %s', bid_id.hex()) return True # Mark bid for archiving if state == BidStates.BID_ACCEPTED: # Waiting for initiate txn to be confirmed in 'from' chain initiate_txnid_hex = bid.initiate_tx.txid.hex() p2sh = ci_from.encode_p2sh(bid.initiate_tx.script) index = None tx_height = None last_initiate_txn_conf = bid.initiate_tx.conf if coin_from == Coins.PART: # Has txindex try: initiate_txn = self.callcoinrpc(coin_from, 'getrawtransaction', [initiate_txnid_hex, True]) # Verify amount vout = getVoutByAddress(initiate_txn, p2sh) out_value = make_int(initiate_txn['vout'][vout]['value']) ensure(out_value == int(bid.amount), 'Incorrect output amount in initiate txn {}: {} != {}.'.format(initiate_txnid_hex, out_value, int(bid.amount))) bid.initiate_tx.conf = initiate_txn['confirmations'] try: tx_height = initiate_txn['height'] except Exception: tx_height = -1 index = vout except Exception: pass else: if self.coin_clients[coin_from]['use_segwit']: addr = ci_from.encode_p2wsh(getP2WSH(bid.initiate_tx.script)) else: addr = p2sh ci_from = self.ci(coin_from) found = ci_from.getLockTxHeight(bytes.fromhex(initiate_txnid_hex), addr, bid.amount, bid.chain_a_height_start, find_index=True) if found: bid.initiate_tx.conf = found['depth'] index = found['index'] tx_height = found['height'] if bid.initiate_tx.conf != last_initiate_txn_conf: save_bid = True if bid.initiate_tx.conf is not None: self.log.debug('initiate_txnid %s confirms %d', initiate_txnid_hex, bid.initiate_tx.conf) if bid.initiate_tx.vout is None: bid.initiate_tx.vout = index # Start checking for spends of initiate_txn before fully confirmed bid.initiate_tx.chain_height = self.setLastHeightChecked(coin_from, tx_height) self.addWatchedOutput(coin_from, bid_id, initiate_txnid_hex, bid.initiate_tx.vout, BidStates.SWAP_INITIATED) if bid.getITxState() is None or bid.getITxState() < TxStates.TX_SENT: bid.setITxState(TxStates.TX_SENT) save_bid = True if bid.initiate_tx.conf >= self.coin_clients[coin_from]['blocks_confirmed']: self.initiateTxnConfirmed(bid_id, bid, offer) save_bid = True # Bid times out if buyer doesn't see tx in chain within INITIATE_TX_TIMEOUT seconds if bid.initiate_tx is None and \ bid.state_time + atomic_swap_1.INITIATE_TX_TIMEOUT < int(time.time()): self.log.info('Swap timed out waiting for initiate tx for bid %s', bid_id.hex()) bid.setState(BidStates.SWAP_TIMEDOUT, 'Timed out waiting for initiate tx') self.saveBid(bid_id, bid) return True # Mark bid for archiving elif state == BidStates.SWAP_INITIATED: # Waiting for participate txn to be confirmed in 'to' chain if self.coin_clients[coin_to]['use_segwit']: addr = ci_to.encode_p2wsh(getP2WSH(bid.participate_tx.script)) else: addr = ci_to.encode_p2sh(bid.participate_tx.script) ci_to = self.ci(coin_to) participate_txid = None if bid.participate_tx is None or bid.participate_tx.txid is None else bid.participate_tx.txid found = ci_to.getLockTxHeight(participate_txid, addr, bid.amount_to, bid.chain_b_height_start, find_index=True) if found: if bid.participate_tx.conf != found['depth']: save_bid = True bid.participate_tx.conf = found['depth'] index = found['index'] if bid.participate_tx is None or bid.participate_tx.txid is None: self.log.debug('Found bid %s participate txn %s in chain %s', bid_id.hex(), found['txid'], coin_to) self.addParticipateTxn(bid_id, bid, coin_to, found['txid'], found['index'], found['height']) bid.setPTxState(TxStates.TX_SENT) save_bid = True if bid.participate_tx.conf is not None: self.log.debug('participate txid %s confirms %d', bid.participate_tx.txid.hex(), bid.participate_tx.conf) if bid.participate_tx.conf >= self.coin_clients[coin_to]['blocks_confirmed']: self.participateTxnConfirmed(bid_id, bid, offer) save_bid = True elif state == BidStates.SWAP_PARTICIPATING: # Waiting for initiate txn spend pass elif state == BidStates.BID_ERROR: # Wait for user input pass else: self.log.warning('checkBidState unknown state %s', state) if state > BidStates.BID_ACCEPTED: # Wait for spend of all known swap txns itx_state = bid.getITxState() ptx_state = bid.getPTxState() if (itx_state is None or itx_state >= TxStates.TX_REDEEMED) and \ (ptx_state is None or ptx_state >= TxStates.TX_REDEEMED): self.log.info('Swap completed for bid %s', bid_id.hex()) self.returnAddressToPool(bid_id, TxTypes.ITX_REFUND if itx_state == TxStates.TX_REDEEMED else TxTypes.PTX_REDEEM) self.returnAddressToPool(bid_id, TxTypes.ITX_REFUND if ptx_state == TxStates.TX_REDEEMED else TxTypes.PTX_REDEEM) bid.setState(BidStates.SWAP_COMPLETED) self.saveBid(bid_id, bid) return True # Mark bid for archiving if save_bid: self.saveBid(bid_id, bid) if bid.debug_ind == DebugTypes.SKIP_LOCK_TX_REFUND: return False # Bid is still active # Try refund, keep trying until sent tx is spent if bid.getITxState() in (TxStates.TX_SENT, TxStates.TX_CONFIRMED) \ and bid.initiate_txn_refund is not None: try: txid = ci_from.publishTx(bid.initiate_txn_refund) self.log.debug('Submitted initiate refund txn %s to %s chain for bid %s', txid, chainparams[coin_from]['name'], bid_id.hex()) # State will update when spend is detected except Exception as ex: if 'non-BIP68-final' not in str(ex) and 'non-final' not in str(ex): self.log.warning('Error trying to submit initiate refund txn: %s', str(ex)) if bid.getPTxState() in (TxStates.TX_SENT, TxStates.TX_CONFIRMED) \ and bid.participate_txn_refund is not None: try: txid = ci_to.publishTx(bid.participate_txn_refund) self.log.debug('Submitted participate refund txn %s to %s chain for bid %s', txid, chainparams[coin_to]['name'], bid_id.hex()) # State will update when spend is detected except Exception as ex: if 'non-BIP68-final' not in str(ex) and 'non-final' not in str(ex): self.log.warning('Error trying to submit participate refund txn: %s', str(ex)) return False # Bid is still active def extractSecret(self, coin_type, bid, spend_in): try: if coin_type == Coins.PART or self.coin_clients[coin_type]['use_segwit']: ensure(len(spend_in['txinwitness']) == 5, 'Bad witness size') return bytes.fromhex(spend_in['txinwitness'][2]) else: script_sig = spend_in['scriptSig']['asm'].split(' ') ensure(len(script_sig) == 5, 'Bad witness size') return bytes.fromhex(script_sig[2]) except Exception: return None def addWatchedOutput(self, coin_type, bid_id, txid_hex, vout, tx_type, swap_type=None): self.log.debug('Adding watched output %s bid %s tx %s type %s', coin_type, bid_id.hex(), txid_hex, tx_type) watched = self.coin_clients[coin_type]['watched_outputs'] for wo in watched: if wo.bid_id == bid_id and wo.txid_hex == txid_hex and wo.vout == vout: self.log.debug('Output already being watched.') return watched.append(WatchedOutput(bid_id, txid_hex, vout, tx_type, swap_type)) def removeWatchedOutput(self, coin_type, bid_id, txid_hex): # Remove all for bid if txid is None self.log.debug('removeWatchedOutput %s %s %s', str(coin_type), bid_id.hex(), txid_hex) old_len = len(self.coin_clients[coin_type]['watched_outputs']) for i in range(old_len - 1, -1, -1): wo = self.coin_clients[coin_type]['watched_outputs'][i] if wo.bid_id == bid_id and (txid_hex is None or wo.txid_hex == txid_hex): del self.coin_clients[coin_type]['watched_outputs'][i] self.log.debug('Removed watched output %s %s %s', str(coin_type), bid_id.hex(), wo.txid_hex) def initiateTxnSpent(self, bid_id, spend_txid, spend_n, spend_txn): self.log.debug('Bid %s initiate txn spent by %s %d', bid_id.hex(), spend_txid, spend_n) if bid_id in self.swaps_in_progress: bid = self.swaps_in_progress[bid_id][0] offer = self.swaps_in_progress[bid_id][1] bid.initiate_tx.spend_txid = bytes.fromhex(spend_txid) bid.initiate_tx.spend_n = spend_n spend_in = spend_txn['vin'][spend_n] coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) secret = self.extractSecret(coin_from, bid, spend_in) if secret is None: self.log.info('Bid %s initiate txn refunded by %s %d', bid_id.hex(), spend_txid, spend_n) # TODO: Wait for depth? bid.setITxState(TxStates.TX_REFUNDED) else: self.log.info('Bid %s initiate txn redeemed by %s %d', bid_id.hex(), spend_txid, spend_n) # TODO: Wait for depth? bid.setITxState(TxStates.TX_REDEEMED) self.removeWatchedOutput(coin_from, bid_id, bid.initiate_tx.txid.hex()) self.saveBid(bid_id, bid) def participateTxnSpent(self, bid_id, spend_txid, spend_n, spend_txn): self.log.debug('Bid %s participate txn spent by %s %d', bid_id.hex(), spend_txid, spend_n) # TODO: More SwapTypes if bid_id in self.swaps_in_progress: bid = self.swaps_in_progress[bid_id][0] offer = self.swaps_in_progress[bid_id][1] bid.participate_tx.spend_txid = bytes.fromhex(spend_txid) bid.participate_tx.spend_n = spend_n spend_in = spend_txn['vin'][spend_n] coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) secret = self.extractSecret(coin_to, bid, spend_in) if secret is None: self.log.info('Bid %s participate txn refunded by %s %d', bid_id.hex(), spend_txid, spend_n) # TODO: Wait for depth? bid.setPTxState(TxStates.TX_REFUNDED) else: self.log.debug('Secret %s extracted from participate spend %s %d', secret.hex(), spend_txid, spend_n) bid.recovered_secret = secret # TODO: Wait for depth? bid.setPTxState(TxStates.TX_REDEEMED) if bid.was_sent: if bid.debug_ind == DebugTypes.DONT_SPEND_ITX: self.log.debug('bid %s: Abandoning bid for testing: %d, %s.', bid_id.hex(), bid.debug_ind, DebugTypes(bid.debug_ind).name) bid.setState(BidStates.BID_ABANDONED) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), None) else: delay = random.randrange(self.min_delay_event_short, self.max_delay_event_short) self.log.info('Redeeming ITX for bid %s in %d seconds', bid_id.hex(), delay) self.createAction(delay, ActionTypes.REDEEM_ITX, bid_id) # TODO: Wait for depth? new state SWAP_TXI_REDEEM_SENT? self.removeWatchedOutput(coin_to, bid_id, bid.participate_tx.txid.hex()) self.saveBid(bid_id, bid) def process_XMR_SWAP_A_LOCK_tx_spend(self, bid_id, spend_txid_hex, spend_txn_hex): self.log.debug('Detected spend of XMR swap coin a lock tx for bid %s', bid_id.hex()) self.mxDB.acquire() try: session = scoped_session(self.session_factory) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) state = BidStates(bid.state) spending_txid = bytes.fromhex(spend_txid_hex) if spending_txid == xmr_swap.a_lock_spend_tx_id: if state == BidStates.XMR_SWAP_LOCK_RELEASED: xmr_swap.a_lock_spend_tx = bytes.fromhex(spend_txn_hex) bid.setState(BidStates.XMR_SWAP_SCRIPT_TX_REDEEMED) # TODO: Wait for confirmation? if not bid.was_received: bid.setState(BidStates.SWAP_COMPLETED) else: # Could already be processed if spend was detected in the mempool self.log.warning('Coin a lock tx spend ignored due to bid state for bid {}'.format(bid_id.hex())) elif spending_txid == xmr_swap.a_lock_refund_tx_id: self.log.debug('Coin a lock tx spent by lock refund tx.') bid.setState(BidStates.XMR_SWAP_SCRIPT_TX_PREREFUND) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_REFUND_TX_SEEN, '', session) else: self.setBidError(bid.bid_id, bid, 'Unexpected txn spent coin a lock tx: {}'.format(spend_txid_hex), save_bid=False) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) session.commit() except Exception as ex: self.log.error('process_XMR_SWAP_A_LOCK_tx_spend %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) finally: session.close() session.remove() self.mxDB.release() def process_XMR_SWAP_A_LOCK_REFUND_tx_spend(self, bid_id, spend_txid_hex, spend_txn): self.log.debug('Detected spend of XMR swap coin a lock refund tx for bid %s', bid_id.hex()) self.mxDB.acquire() try: session = scoped_session(self.session_factory) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) state = BidStates(bid.state) spending_txid = bytes.fromhex(spend_txid_hex) if spending_txid == xmr_swap.a_lock_refund_spend_tx_id: self.log.info('Found coin a lock refund spend tx, bid {}'.format(bid_id.hex())) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_REFUND_SPEND_TX_SEEN, '', session) if bid.was_sent: xmr_swap.a_lock_refund_spend_tx = bytes.fromhex(spend_txn['hex']) # Replace with fully signed tx if TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND not in bid.txns: bid.txns[TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND] = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_REFUND_SPEND, txid=xmr_swap.a_lock_refund_spend_tx_id, ) if bid.xmr_b_lock_tx is not None: delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Recovering xmr swap chain B lock tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.RECOVER_XMR_SWAP_LOCK_TX_B, bid_id, session) else: # Other side refunded before swap lock tx was sent bid.setState(BidStates.XMR_SWAP_FAILED) if bid.was_received: if not bid.was_sent: bid.setState(BidStates.XMR_SWAP_FAILED_REFUNDED) else: self.log.info('Coin a lock refund spent by unknown tx, bid {}'.format(bid_id.hex())) bid.setState(BidStates.XMR_SWAP_FAILED_SWIPED) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) session.commit() except Exception as ex: self.log.error('process_XMR_SWAP_A_LOCK_REFUND_tx_spend %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) finally: session.close() session.remove() self.mxDB.release() def processSpentOutput(self, coin_type, watched_output, spend_txid_hex, spend_n, spend_txn): if watched_output.swap_type == SwapTypes.XMR_SWAP: if watched_output.tx_type == TxTypes.XMR_SWAP_A_LOCK: self.process_XMR_SWAP_A_LOCK_tx_spend(watched_output.bid_id, spend_txid_hex, spend_txn['hex']) elif watched_output.tx_type == TxTypes.XMR_SWAP_A_LOCK_REFUND: self.process_XMR_SWAP_A_LOCK_REFUND_tx_spend(watched_output.bid_id, spend_txid_hex, spend_txn) self.removeWatchedOutput(coin_type, watched_output.bid_id, watched_output.txid_hex) return if watched_output.tx_type == BidStates.SWAP_PARTICIPATING: self.participateTxnSpent(watched_output.bid_id, spend_txid_hex, spend_n, spend_txn) else: self.initiateTxnSpent(watched_output.bid_id, spend_txid_hex, spend_n, spend_txn) def checkForSpends(self, coin_type, c): # assert(self.mxDB.locked()) self.log.debug('checkForSpends %s', coin_type) # TODO: Check for spends on watchonly txns where possible if 'have_spent_index' in self.coin_clients[coin_type] and self.coin_clients[coin_type]['have_spent_index']: # TODO: batch getspentinfo for o in c['watched_outputs']: found_spend = None try: found_spend = self.callcoinrpc(Coins.PART, 'getspentinfo', [{'txid': o.txid_hex, 'index': o.vout}]) except Exception as ex: if 'Unable to get spent info' not in str(ex): self.log.warning('getspentinfo %s', str(ex)) if found_spend is not None: self.log.debug('Found spend in spentindex %s %d in %s %d', o.txid_hex, o.vout, found_spend['txid'], found_spend['index']) spend_txid = found_spend['txid'] spend_n = found_spend['index'] spend_txn = self.callcoinrpc(Coins.PART, 'getrawtransaction', [spend_txid, True]) self.processSpentOutput(coin_type, o, spend_txid, spend_n, spend_txn) else: chain_blocks = self.callcoinrpc(coin_type, 'getblockcount') last_height_checked = c['last_height_checked'] self.log.debug('chain_blocks, last_height_checked %s %s', chain_blocks, last_height_checked) while last_height_checked < chain_blocks: block_hash = self.callcoinrpc(coin_type, 'getblockhash', [last_height_checked + 1]) try: block = self.callcoinrpc(coin_type, 'getblock', [block_hash, 2]) except Exception as e: if 'Block not available (pruned data)' in str(e): # TODO: Better solution? bci = self.callcoinrpc(coin_type, 'getblockchaininfo') self.log.error('Coin %s last_height_checked %d set to pruneheight %d', self.ci(coin_type).coin_name(), last_height_checked, bci['pruneheight']) last_height_checked = bci['pruneheight'] continue for tx in block['tx']: for i, inp in enumerate(tx['vin']): for o in c['watched_outputs']: inp_txid = inp.get('txid', None) if inp_txid is None: # Coinbase continue if inp_txid == o.txid_hex and inp['vout'] == o.vout: self.log.debug('Found spend from search %s %d in %s %d', o.txid_hex, o.vout, tx['txid'], i) self.processSpentOutput(coin_type, o, tx['txid'], i, tx) last_height_checked += 1 if c['last_height_checked'] != last_height_checked: c['last_height_checked'] = last_height_checked self.setIntKV('last_height_checked_' + chainparams[coin_type]['name'], last_height_checked) def expireMessages(self): self.mxDB.acquire() try: now = int(time.time()) options = {'encoding': 'none'} ro = self.callrpc('smsginbox', ['all', '', options]) num_messages = 0 num_removed = 0 for msg in ro['messages']: num_messages += 1 expire_at = msg['sent'] + msg['ttl'] if expire_at < now: options = {'encoding': 'none', 'delete': True} del_msg = self.callrpc('smsg', [msg['msgid'], options]) num_removed += 1 if num_messages + num_removed > 0: self.log.info('Expired {} / {} messages.'.format(num_removed, num_messages)) self.log.debug('TODO: Expire records from db') finally: self.mxDB.release() def countQueuedActions(self, session, bid_id, action_type): q = session.query(Action).filter(sa.and_(Action.active_ind == 1, Action.linked_id == bid_id, Action.action_type == int(action_type))) return q.count() def checkQueuedActions(self): self.mxDB.acquire() now = int(time.time()) session = None try: session = scoped_session(self.session_factory) q = session.query(Action).filter(sa.and_(Action.active_ind == 1, Action.trigger_at <= now)) for row in q: try: if row.action_type == ActionTypes.ACCEPT_BID: self.acceptBid(row.linked_id) elif row.action_type == ActionTypes.ACCEPT_XMR_BID: self.acceptXmrBid(row.linked_id) elif row.action_type == ActionTypes.SIGN_XMR_SWAP_LOCK_TX_A: self.sendXmrBidTxnSigsFtoL(row.linked_id, session) elif row.action_type == ActionTypes.SEND_XMR_SWAP_LOCK_TX_A: self.sendXmrBidCoinALockTx(row.linked_id, session) elif row.action_type == ActionTypes.SEND_XMR_SWAP_LOCK_TX_B: self.sendXmrBidCoinBLockTx(row.linked_id, session) elif row.action_type == ActionTypes.SEND_XMR_LOCK_RELEASE: self.sendXmrBidLockRelease(row.linked_id, session) elif row.action_type == ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_A: self.redeemXmrBidCoinALockTx(row.linked_id, session) elif row.action_type == ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_B: self.redeemXmrBidCoinBLockTx(row.linked_id, session) elif row.action_type == ActionTypes.RECOVER_XMR_SWAP_LOCK_TX_B: self.recoverXmrBidCoinBLockTx(row.linked_id, session) elif row.action_type == ActionTypes.SEND_XMR_SWAP_LOCK_SPEND_MSG: self.sendXmrBidCoinALockSpendTxMsg(row.linked_id, session) elif row.action_type == ActionTypes.REDEEM_ITX: atomic_swap_1.redeemITx(self, row.linked_id, session) else: self.log.warning('Unknown event type: %d', row.event_type) except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) self.log.error('checkQueuedActions failed: {}'.format(str(ex))) if self.debug: session.execute('UPDATE actions SET active_ind = 2 WHERE trigger_at <= {}'.format(now)) else: session.execute('DELETE FROM actions WHERE trigger_at <= {}'.format(now)) session.commit() finally: if session: session.close() session.remove() self.mxDB.release() def checkXmrSwaps(self): self.mxDB.acquire() now = int(time.time()) ttl_xmr_split_messages = 60 * 60 session = None try: session = scoped_session(self.session_factory) q = session.query(Bid).filter(Bid.state == BidStates.BID_RECEIVING) for bid in q: q = session.execute('SELECT COUNT(*) FROM xmr_split_data WHERE bid_id = x\'{}\' AND msg_type = {}'.format(bid.bid_id.hex(), XmrSplitMsgTypes.BID)).first() num_segments = q[0] if num_segments > 1: try: self.receiveXmrBid(bid, session) except Exception as ex: self.log.info('Verify xmr bid {} failed: {}'.format(bid.bid_id.hex(), str(ex))) if self.debug: self.log.error(traceback.format_exc()) bid.setState(BidStates.BID_ERROR, 'Failed validation: ' + str(ex)) session.add(bid) self.updateBidInProgress(bid) continue if bid.created_at + ttl_xmr_split_messages < now: self.log.debug('Expiring partially received bid: {}'.format(bid.bid_id.hex())) bid.setState(BidStates.BID_ERROR, 'Timed out') session.add(bid) q = session.query(Bid).filter(Bid.state == BidStates.BID_RECEIVING_ACC) for bid in q: q = session.execute('SELECT COUNT(*) FROM xmr_split_data WHERE bid_id = x\'{}\' AND msg_type = {}'.format(bid.bid_id.hex(), XmrSplitMsgTypes.BID_ACCEPT)).first() num_segments = q[0] if num_segments > 1: try: self.receiveXmrBidAccept(bid, session) except Exception as ex: self.log.info('Verify xmr bid accept {} failed: {}'.format(bid.bid_id.hex(), str(ex))) bid.setState(BidStates.BID_ERROR, 'Failed accept validation: ' + str(ex)) session.add(bid) self.updateBidInProgress(bid) continue if bid.created_at + ttl_xmr_split_messages < now: self.log.debug('Expiring partially received bid accept: {}'.format(bid.bid_id.hex())) bid.setState(BidStates.BID_ERROR, 'Timed out') session.add(bid) # Expire old records q = session.query(XmrSplitData).filter(XmrSplitData.created_at + ttl_xmr_split_messages < now) q.delete(synchronize_session=False) session.commit() finally: if session: session.close() session.remove() self.mxDB.release() def processOffer(self, msg): offer_bytes = bytes.fromhex(msg['hex'][2:-2]) offer_data = OfferMessage() offer_data.ParseFromString(offer_bytes) # Validate data now = int(time.time()) coin_from = Coins(offer_data.coin_from) ci_from = self.ci(coin_from) coin_to = Coins(offer_data.coin_to) ci_to = self.ci(coin_to) ensure(offer_data.coin_from != offer_data.coin_to, 'coin_from == coin_to') self.validateSwapType(coin_from, coin_to, offer_data.swap_type) self.validateOfferAmounts(coin_from, coin_to, offer_data.amount_from, offer_data.rate, offer_data.min_bid_amount) self.validateOfferLockValue(coin_from, coin_to, offer_data.lock_type, offer_data.lock_value) self.validateOfferValidTime(offer_data.swap_type, coin_from, coin_to, offer_data.time_valid) ensure(msg['sent'] + offer_data.time_valid >= now, 'Offer expired') if offer_data.swap_type == SwapTypes.SELLER_FIRST: ensure(len(offer_data.proof_address) == 0, 'Unexpected data') ensure(len(offer_data.proof_signature) == 0, 'Unexpected data') ensure(len(offer_data.pkhash_seller) == 0, 'Unexpected data') ensure(len(offer_data.secret_hash) == 0, 'Unexpected data') elif offer_data.swap_type == SwapTypes.BUYER_FIRST: raise ValueError('TODO') elif offer_data.swap_type == SwapTypes.XMR_SWAP: ensure(coin_from not in non_script_type_coins, 'Invalid coin from type') ensure(coin_to in non_script_type_coins, 'Invalid coin to type') ensure(len(offer_data.proof_address) == 0, 'Unexpected data') ensure(len(offer_data.proof_signature) == 0, 'Unexpected data') ensure(len(offer_data.pkhash_seller) == 0, 'Unexpected data') ensure(len(offer_data.secret_hash) == 0, 'Unexpected data') else: raise ValueError('Unknown swap type {}.'.format(offer_data.swap_type)) offer_id = bytes.fromhex(msg['msgid']) if self.isOfferRevoked(offer_id, msg['from']): raise ValueError('Offer has been revoked {}.'.format(offer_id.hex())) session = scoped_session(self.session_factory) try: # Offers must be received on the public network_addr or manually created addresses if msg['to'] != self.network_addr: # Double check active_ind, shouldn't be possible to receive message if not active query_str = 'SELECT COUNT(addr_id) FROM smsgaddresses WHERE addr = "{}" AND use_type = {} AND active_ind = 1'.format(msg['to'], AddressTypes.RECV_OFFER) rv = session.execute(query_str).first() if rv[0] < 1: raise ValueError('Offer received on incorrect address') # Check for sent existing_offer = self.getOffer(offer_id) if existing_offer is None: offer = Offer( offer_id=offer_id, active_ind=1, protocol_version=offer_data.protocol_version, coin_from=offer_data.coin_from, coin_to=offer_data.coin_to, amount_from=offer_data.amount_from, rate=offer_data.rate, min_bid_amount=offer_data.min_bid_amount, time_valid=offer_data.time_valid, lock_type=int(offer_data.lock_type), lock_value=offer_data.lock_value, swap_type=offer_data.swap_type, amount_negotiable=offer_data.amount_negotiable, rate_negotiable=offer_data.rate_negotiable, addr_to=msg['to'], addr_from=msg['from'], created_at=msg['sent'], expire_at=msg['sent'] + offer_data.time_valid, was_sent=False) offer.setState(OfferStates.OFFER_RECEIVED) session.add(offer) if offer.swap_type == SwapTypes.XMR_SWAP: xmr_offer = XmrOffer() xmr_offer.offer_id = offer_id xmr_offer.lock_time_1 = ci_from.getExpectedSequence(offer_data.lock_type, offer_data.lock_value) xmr_offer.lock_time_2 = ci_from.getExpectedSequence(offer_data.lock_type, offer_data.lock_value) xmr_offer.a_fee_rate = offer_data.fee_rate_from xmr_offer.b_fee_rate = offer_data.fee_rate_to session.add(xmr_offer) self.log.debug('Received new offer %s', offer_id.hex()) else: existing_offer.setState(OfferStates.OFFER_RECEIVED) session.add(existing_offer) session.commit() finally: session.close() session.remove() def processOfferRevoke(self, msg): ensure(msg['to'] == self.network_addr, 'Message received on wrong address') msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = OfferRevokeMessage() msg_data.ParseFromString(msg_bytes) now = int(time.time()) self.mxDB.acquire() session = None try: session = scoped_session(self.session_factory) if len(msg_data.offer_msg_id) != 28: raise ValueError('Invalid msg_id length') if len(msg_data.signature) != 65: raise ValueError('Invalid signature length') offer = session.query(Offer).filter_by(offer_id=msg_data.offer_msg_id).first() if offer is None: self.storeOfferRevoke(msg_data.offer_msg_id, msg_data.signature) raise ValueError('Offer not found: {}'.format(msg_data.offer_msg_id.hex())) if offer.expire_at <= now: raise ValueError('Offer already expired: {}'.format(msg_data.offer_msg_id.hex())) signature_enc = base64.b64encode(msg_data.signature).decode('utf-8') passed = self.callcoinrpc(Coins.PART, 'verifymessage', [offer.addr_from, signature_enc, msg_data.offer_msg_id.hex() + '_revoke']) ensure(passed is True, 'Signature invalid') offer.active_ind = 2 # TODO: Remove message, or wait for expire session.add(offer) session.commit() finally: if session: session.close() session.remove() self.mxDB.release() def getCompletedAndActiveBidsValue(self, offer, session): bids = [] total_value = 0 q = session.execute( '''SELECT bid_id, amount, state FROM bids JOIN bidstates ON bidstates.state_id = bids.state AND (bidstates.state_id = {1} OR bidstates.in_progress > 0) WHERE bids.active_ind = 1 AND bids.offer_id = x\'{0}\' UNION SELECT bid_id, amount, state FROM bids JOIN actions ON actions.linked_id = bids.bid_id AND actions.active_ind = 1 AND (actions.action_type = {2} OR actions.action_type = {3}) WHERE bids.active_ind = 1 AND bids.offer_id = x\'{0}\' '''.format(offer.offer_id.hex(), BidStates.SWAP_COMPLETED, ActionTypes.ACCEPT_XMR_BID, ActionTypes.ACCEPT_BID)) for row in q: bid_id, amount, state = row bids.append((bid_id, amount, state)) total_value += amount return bids, total_value def shouldAutoAcceptBid(self, offer, bid, session=None): use_session = None try: if session: use_session = session else: self.mxDB.acquire() use_session = scoped_session(self.session_factory) link = use_session.query(AutomationLink).filter_by(active_ind=1, linked_type=Concepts.OFFER, linked_id=offer.offer_id).first() if not link: return False strategy = use_session.query(AutomationStrategy).filter_by(active_ind=1, record_id=link.strategy_id).first() opts = json.loads(strategy.data.decode('utf-8')) self.log.debug('Evaluating against strategy {}'.format(strategy.record_id)) if not offer.amount_negotiable: if bid.amount != offer.amount_from: raise AutomationConstraint('Need exact amount match') if bid.amount < offer.min_bid_amount: raise AutomationConstraint('Bid amount below offer minimum') if opts.get('exact_rate_only', False) is True: if bid.rate != offer.rate: raise AutomationConstraint('Need exact rate match') active_bids, total_bids_value = self.getCompletedAndActiveBidsValue(offer, use_session) if total_bids_value + bid.amount > offer.amount_from: raise AutomationConstraint('Over remaining offer value {}'.format(offer.amount_from - total_bids_value)) num_not_completed = 0 for active_bid in active_bids: if active_bid[2] != BidStates.SWAP_COMPLETED: num_not_completed += 1 max_concurrent_bids = opts.get('max_concurrent_bids', 1) if num_not_completed >= max_concurrent_bids: raise AutomationConstraint('Already have {} bids to complete'.format(num_not_completed)) if strategy.only_known_identities: identity_stats = use_session.query(KnownIdentity).filter_by(address=bid.bid_addr).first() if not identity_stats: raise AutomationConstraint('Unknown bidder') # TODO: More options if identity_stats.num_recv_bids_successful < 1: raise AutomationConstraint('Bidder has too few successful swaps') if identity_stats.num_recv_bids_successful <= identity_stats.num_recv_bids_failed: raise AutomationConstraint('Bidder has too many failed swaps') self.logEvent(Concepts.BID, bid.bid_id, EventLogTypes.AUTOMATION_ACCEPTING_BID, '', use_session) return True except AutomationConstraint as e: self.log.info('Not auto accepting bid {}, {}'.format(bid.bid_id.hex(), str(e))) if self.debug: self.logEvent(Concepts.AUTOMATION, bid.bid_id, EventLogTypes.AUTOMATION_CONSTRAINT, str(e), use_session) return False except Exception as e: self.log.error('shouldAutoAcceptBid: %s', str(e)) if self.debug: self.log.error(traceback.format_exc()) return False finally: if session is None: use_session.commit() use_session.close() use_session.remove() self.mxDB.release() def processBid(self, msg): self.log.debug('Processing bid msg %s', msg['msgid']) now = int(time.time()) bid_bytes = bytes.fromhex(msg['hex'][2:-2]) bid_data = BidMessage() bid_data.ParseFromString(bid_bytes) # Validate data ensure(len(bid_data.offer_msg_id) == 28, 'Bad offer_id length') offer_id = bid_data.offer_msg_id offer = self.getOffer(offer_id, sent=True) ensure(offer and offer.was_sent, 'Unknown offer') ensure(offer.state == OfferStates.OFFER_RECEIVED, 'Bad offer state') ensure(msg['to'] == offer.addr_from, 'Received on incorrect address') ensure(now <= offer.expire_at, 'Offer expired') self.validateBidValidTime(offer.swap_type, offer.coin_from, offer.coin_to, bid_data.time_valid) ensure(now <= msg['sent'] + bid_data.time_valid, 'Bid expired') self.validateBidAmount(offer, bid_data.amount, bid_data.rate) # TODO: Allow higher bids # assert(bid_data.rate != offer['data'].rate), 'Bid rate mismatch' coin_to = Coins(offer.coin_to) ci_from = self.ci(offer.coin_from) ci_to = self.ci(coin_to) amount_to = int((bid_data.amount * bid_data.rate) // ci_from.COIN()) swap_type = offer.swap_type if swap_type == SwapTypes.SELLER_FIRST: ensure(len(bid_data.pkhash_buyer) == 20, 'Bad pkhash_buyer length') # Verify proof of funds bid_proof_address = replaceAddrPrefix(bid_data.proof_address, Coins.PART, self.chain) mm = chainparams[coin_to]['message_magic'] passed = self.ci(Coins.PART).verifyMessage(bid_proof_address, bid_data.proof_address + '_swap_proof_' + offer_id.hex(), bid_data.proof_signature, mm) ensure(passed is True, 'Proof of funds signature invalid') if self.coin_clients[coin_to]['use_segwit']: addr_search = self.encodeSegwit(coin_to, decodeAddress(bid_data.proof_address)[1:]) else: addr_search = bid_data.proof_address sum_unspent = self.getAddressBalance(coin_to, addr_search) self.log.debug('Proof of funds %s %s', bid_data.proof_address, self.ci(coin_to).format_amount(sum_unspent)) ensure(sum_unspent >= amount_to, 'Proof of funds failed') elif swap_type == SwapTypes.BUYER_FIRST: raise ValueError('TODO') else: raise ValueError('Unknown swap type {}.'.format(swap_type)) bid_id = bytes.fromhex(msg['msgid']) bid = self.getBid(bid_id) if bid is None: bid = Bid( active_ind=1, bid_id=bid_id, offer_id=offer_id, protocol_version=bid_data.protocol_version, amount=bid_data.amount, rate=bid_data.rate, pkhash_buyer=bid_data.pkhash_buyer, created_at=msg['sent'], amount_to=amount_to, expire_at=msg['sent'] + bid_data.time_valid, bid_addr=msg['from'], was_received=True, chain_a_height_start=ci_from.getChainHeight(), chain_b_height_start=ci_to.getChainHeight(), ) else: ensure(bid.state == BidStates.BID_SENT, 'Wrong bid state: {}'.format(str(BidStates(bid.state)))) bid.created_at = msg['sent'] bid.expire_at = msg['sent'] + bid_data.time_valid bid.was_received = True if len(bid_data.proof_address) > 0: bid.proof_address = bid_data.proof_address bid.setState(BidStates.BID_RECEIVED) self.log.info('Received valid bid %s for offer %s', bid_id.hex(), bid_data.offer_msg_id.hex()) self.saveBid(bid_id, bid) if self.shouldAutoAcceptBid(offer, bid): delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Auto accepting bid %s in %d seconds', bid_id.hex(), delay) self.createAction(delay, ActionTypes.ACCEPT_BID, bid_id) def processBidAccept(self, msg): self.log.debug('Processing bid accepted msg %s', msg['msgid']) now = int(time.time()) bid_accept_bytes = bytes.fromhex(msg['hex'][2:-2]) bid_accept_data = BidAcceptMessage() bid_accept_data.ParseFromString(bid_accept_bytes) ensure(len(bid_accept_data.bid_msg_id) == 28, 'Bad bid_msg_id length') ensure(len(bid_accept_data.initiate_txid) == 32, 'Bad initiate_txid length') ensure(len(bid_accept_data.contract_script) < 100, 'Bad contract_script length') self.log.debug('for bid %s', bid_accept_data.bid_msg_id.hex()) bid_id = bid_accept_data.bid_msg_id bid, offer = self.getBidAndOffer(bid_id) ensure(bid is not None and bid.was_sent is True, 'Unknown bidid') ensure(offer, 'Offer not found ' + bid.offer_id.hex()) coin_from = Coins(offer.coin_from) ci_from = self.ci(coin_from) ensure(bid.expire_at > now + self._bid_expired_leeway, 'Bid expired') if bid.state >= BidStates.BID_ACCEPTED: if bid.was_received: # Sent to self self.log.info('Received valid bid accept %s for bid %s sent to self', bid.accept_msg_id.hex(), bid_id.hex()) return raise ValueError('Wrong bid state: {}'.format(str(BidStates(bid.state)))) use_csv = True if offer.lock_type < TxLockTypes.ABS_LOCK_BLOCKS else False # TODO: Verify script without decoding? decoded_script = self.callcoinrpc(Coins.PART, 'decodescript', [bid_accept_data.contract_script.hex()]) lock_check_op = 'OP_CHECKSEQUENCEVERIFY' if use_csv else 'OP_CHECKLOCKTIMEVERIFY' prog = re.compile(r'OP_IF OP_SIZE 32 OP_EQUALVERIFY OP_SHA256 (\w+) OP_EQUALVERIFY OP_DUP OP_HASH160 (\w+) OP_ELSE (\d+) {} OP_DROP OP_DUP OP_HASH160 (\w+) OP_ENDIF OP_EQUALVERIFY OP_CHECKSIG'.format(lock_check_op)) rr = prog.match(decoded_script['asm']) if not rr: raise ValueError('Bad script') scriptvalues = rr.groups() ensure(len(scriptvalues[0]) == 64, 'Bad secret_hash length') ensure(bytes.fromhex(scriptvalues[1]) == bid.pkhash_buyer, 'pkhash_buyer mismatch') script_lock_value = int(scriptvalues[2]) if use_csv: expect_sequence = ci_from.getExpectedSequence(offer.lock_type, offer.lock_value) ensure(script_lock_value == expect_sequence, 'sequence mismatch') else: if offer.lock_type == TxLockTypes.ABS_LOCK_BLOCKS: self.log.warning('TODO: validate absolute lock values') else: ensure(script_lock_value <= bid.created_at + offer.lock_value + atomic_swap_1.INITIATE_TX_TIMEOUT, 'script lock time too high') ensure(script_lock_value >= bid.created_at + offer.lock_value, 'script lock time too low') ensure(len(scriptvalues[3]) == 40, 'pkhash_refund bad length') ensure(bid.accept_msg_id is None, 'Bid already accepted') bid.accept_msg_id = bytes.fromhex(msg['msgid']) bid.initiate_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.ITX, txid=bid_accept_data.initiate_txid, script=bid_accept_data.contract_script, ) bid.pkhash_seller = bytes.fromhex(scriptvalues[3]) bid.setState(BidStates.BID_ACCEPTED) bid.setITxState(TxStates.TX_NONE) self.log.info('Received valid bid accept %s for bid %s', bid.accept_msg_id.hex(), bid_id.hex()) self.saveBid(bid_id, bid) self.swaps_in_progress[bid_id] = (bid, offer) def receiveXmrBid(self, bid, session): self.log.debug('Receiving xmr bid %s', bid.bid_id.hex()) now = int(time.time()) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=True) ensure(offer and offer.was_sent, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid.bid_id.hex())) ci_from = self.ci(Coins(offer.coin_from)) ci_to = self.ci(Coins(offer.coin_to)) if offer.coin_to == Coins.XMR: if len(xmr_swap.kbsf_dleag) < ci_to.lengthDLEAG(): q = session.query(XmrSplitData).filter(sa.and_(XmrSplitData.bid_id == bid.bid_id, XmrSplitData.msg_type == XmrSplitMsgTypes.BID)).order_by(XmrSplitData.msg_sequence.asc()) for row in q: xmr_swap.kbsf_dleag += row.dleag if not ci_to.verifyDLEAG(xmr_swap.kbsf_dleag): raise ValueError('Invalid DLEAG proof.') # Extract pubkeys from MSG1L DLEAG xmr_swap.pkasf = xmr_swap.kbsf_dleag[0: 33] if not ci_from.verifyPubkey(xmr_swap.pkasf): raise ValueError('Invalid coin a pubkey.') xmr_swap.pkbsf = xmr_swap.kbsf_dleag[33: 33 + 32] if not ci_to.verifyPubkey(xmr_swap.pkbsf): raise ValueError('Invalid coin b pubkey.') else: xmr_swap.pkasf = xmr_swap.kbsf_dleag[0: 33] if not ci_from.verifyPubkey(xmr_swap.pkasf): raise ValueError('Invalid coin a pubkey.') xmr_swap.pkbsf = xmr_swap.pkasf ensure(ci_to.verifyKey(xmr_swap.vkbvf), 'Invalid key, vkbvf') ensure(ci_from.verifyPubkey(xmr_swap.pkaf), 'Invalid pubkey, pkaf') self.log.info('Received valid bid %s for xmr offer %s', bid.bid_id.hex(), bid.offer_id.hex()) bid.setState(BidStates.BID_RECEIVED) if self.shouldAutoAcceptBid(offer, bid, session): delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Auto accepting xmr bid %s in %d seconds', bid.bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.ACCEPT_XMR_BID, bid.bid_id, session) bid.setState(BidStates.SWAP_DELAYING) self.saveBidInSession(bid.bid_id, bid, session, xmr_swap) def receiveXmrBidAccept(self, bid, session): # Follower receiving MSG1F and MSG2F self.log.debug('Receiving xmr bid accept %s', bid.bid_id.hex()) now = int(time.time()) offer, xmr_offer = self.getXmrOffer(bid.offer_id, sent=True) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) xmr_swap = session.query(XmrSwap).filter_by(bid_id=bid.bid_id).first() ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid.bid_id.hex())) ci_from = self.ci(offer.coin_from) ci_to = self.ci(offer.coin_to) if offer.coin_to == Coins.XMR: if len(xmr_swap.kbsl_dleag) < ci_to.lengthDLEAG(): q = session.query(XmrSplitData).filter(sa.and_(XmrSplitData.bid_id == bid.bid_id, XmrSplitData.msg_type == XmrSplitMsgTypes.BID_ACCEPT)).order_by(XmrSplitData.msg_sequence.asc()) for row in q: xmr_swap.kbsl_dleag += row.dleag if not ci_to.verifyDLEAG(xmr_swap.kbsl_dleag): raise ValueError('Invalid DLEAG proof.') # Extract pubkeys from MSG1F DLEAG xmr_swap.pkasl = xmr_swap.kbsl_dleag[0: 33] if not ci_from.verifyPubkey(xmr_swap.pkasl): raise ValueError('Invalid coin a pubkey.') xmr_swap.pkbsl = xmr_swap.kbsl_dleag[33: 33 + 32] if not ci_to.verifyPubkey(xmr_swap.pkbsl): raise ValueError('Invalid coin b pubkey.') else: xmr_swap.pkasl = xmr_swap.kbsl_dleag[0: 33] if not ci_from.verifyPubkey(xmr_swap.pkasl): raise ValueError('Invalid coin a pubkey.') xmr_swap.pkbsl = xmr_swap.pkasl # vkbv and vkbvl are verified in processXmrBidAccept xmr_swap.pkbv = ci_to.sumPubkeys(xmr_swap.pkbvl, xmr_swap.pkbvf) xmr_swap.pkbs = ci_to.sumPubkeys(xmr_swap.pkbsl, xmr_swap.pkbsf) if not ci_from.verifyPubkey(xmr_swap.pkal): raise ValueError('Invalid pubkey.') if xmr_swap.pkbvl == xmr_swap.pkbvf: raise ValueError('Duplicate scriptless view pubkey.') if xmr_swap.pkbsl == xmr_swap.pkbsf: raise ValueError('Duplicate scriptless spend pubkey.') if xmr_swap.pkal == xmr_swap.pkaf: raise ValueError('Duplicate script spend pubkey.') bid.setState(BidStates.BID_ACCEPTED) # XMR self.saveBidInSession(bid.bid_id, bid, session, xmr_swap) delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Responding to xmr bid accept %s in %d seconds', bid.bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.SIGN_XMR_SWAP_LOCK_TX_A, bid.bid_id, session) def processXmrBid(self, msg): # MSG1L self.log.debug('Processing xmr bid msg %s', msg['msgid']) now = int(time.time()) bid_bytes = bytes.fromhex(msg['hex'][2:-2]) bid_data = XmrBidMessage() bid_data.ParseFromString(bid_bytes) # Validate data ensure(len(bid_data.offer_msg_id) == 28, 'Bad offer_id length') offer_id = bid_data.offer_msg_id offer, xmr_offer = self.getXmrOffer(offer_id, sent=True) ensure(offer and offer.was_sent, 'Offer not found: {}.'.format(offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(offer_id.hex())) ci_from = self.ci(offer.coin_from) ci_to = self.ci(offer.coin_to) if not validOfferStateToReceiveBid(offer.state): raise ValueError('Bad offer state') ensure(msg['to'] == offer.addr_from, 'Received on incorrect address') ensure(now <= offer.expire_at, 'Offer expired') self.validateBidValidTime(offer.swap_type, offer.coin_from, offer.coin_to, bid_data.time_valid) ensure(now <= msg['sent'] + bid_data.time_valid, 'Bid expired') self.validateBidAmount(offer, bid_data.amount, bid_data.rate) ensure(ci_to.verifyKey(bid_data.kbvf), 'Invalid chain B follower view key') ensure(ci_from.verifyPubkey(bid_data.pkaf), 'Invalid chain A follower public key') bid_id = bytes.fromhex(msg['msgid']) bid, xmr_swap = self.getXmrBid(bid_id) if bid is None: bid = Bid( active_ind=1, bid_id=bid_id, offer_id=offer_id, protocol_version=bid_data.protocol_version, amount=bid_data.amount, rate=bid_data.rate, created_at=msg['sent'], amount_to=(bid_data.amount * bid_data.rate) // ci_from.COIN(), expire_at=msg['sent'] + bid_data.time_valid, bid_addr=msg['from'], was_received=True, chain_a_height_start=ci_from.getChainHeight(), chain_b_height_start=ci_to.getChainHeight(), ) xmr_swap = XmrSwap( bid_id=bid_id, dest_af=bid_data.dest_af, pkaf=bid_data.pkaf, vkbvf=bid_data.kbvf, pkbvf=ci_to.getPubkey(bid_data.kbvf), kbsf_dleag=bid_data.kbsf_dleag, ) wallet_restore_height = self.getWalletRestoreHeight(ci_to) if bid.chain_b_height_start < wallet_restore_height: bid.chain_b_height_start = wallet_restore_height self.log.warning('XMR swap restore height clamped to {}'.format(wallet_restore_height)) else: ensure(bid.state == BidStates.BID_SENT, 'Wrong bid state: {}'.format(str(BidStates(bid.state)))) bid.created_at = msg['sent'] bid.expire_at = msg['sent'] + bid_data.time_valid bid.was_received = True bid.setState(BidStates.BID_RECEIVING) self.log.info('Receiving xmr bid %s for offer %s', bid_id.hex(), bid_data.offer_msg_id.hex()) self.saveBid(bid_id, bid, xmr_swap=xmr_swap) if offer.coin_to != Coins.XMR: with self.mxDB: try: session = scoped_session(self.session_factory) self.receiveXmrBid(bid, session) session.commit() finally: session.close() session.remove() def processXmrBidAccept(self, msg): # F receiving MSG1F and MSG2F self.log.debug('Processing xmr bid accept msg %s', msg['msgid']) now = int(time.time()) msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = XmrBidAcceptMessage() msg_data.ParseFromString(msg_bytes) ensure(len(msg_data.bid_msg_id) == 28, 'Bad bid_msg_id length') self.log.debug('for bid %s', msg_data.bid_msg_id.hex()) bid, xmr_swap = self.getXmrBid(msg_data.bid_msg_id) ensure(bid, 'Bid not found: {}.'.format(msg_data.bid_msg_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(msg_data.bid_msg_id.hex())) offer, xmr_offer = self.getXmrOffer(bid.offer_id, sent=True) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) ci_from = self.ci(offer.coin_from) ci_to = self.ci(offer.coin_to) try: xmr_swap.pkal = msg_data.pkal xmr_swap.vkbvl = msg_data.kbvl ensure(ci_to.verifyKey(xmr_swap.vkbvl), 'Invalid key, vkbvl') xmr_swap.vkbv = ci_to.sumKeys(xmr_swap.vkbvl, xmr_swap.vkbvf) ensure(ci_to.verifyKey(xmr_swap.vkbv), 'Invalid key, vkbv') xmr_swap.pkbvl = ci_to.getPubkey(msg_data.kbvl) xmr_swap.kbsl_dleag = msg_data.kbsl_dleag xmr_swap.a_lock_tx = msg_data.a_lock_tx xmr_swap.a_lock_tx_script = msg_data.a_lock_tx_script xmr_swap.a_lock_refund_tx = msg_data.a_lock_refund_tx xmr_swap.a_lock_refund_tx_script = msg_data.a_lock_refund_tx_script xmr_swap.a_lock_refund_spend_tx = msg_data.a_lock_refund_spend_tx xmr_swap.a_lock_refund_spend_tx_id = ci_from.getTxid(xmr_swap.a_lock_refund_spend_tx) xmr_swap.al_lock_refund_tx_sig = msg_data.al_lock_refund_tx_sig # TODO: check_lock_tx_inputs without txindex check_a_lock_tx_inputs = False xmr_swap.a_lock_tx_id, xmr_swap.a_lock_tx_vout = ci_from.verifyLockTx( xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script, bid.amount, xmr_swap.pkal, xmr_swap.pkaf, xmr_offer.a_fee_rate, check_a_lock_tx_inputs, xmr_swap.vkbv) a_lock_tx_dest = ci_from.getScriptDest(xmr_swap.a_lock_tx_script) xmr_swap.a_lock_refund_tx_id, xmr_swap.a_swap_refund_value, lock_refund_vout = ci_from.verifyLockRefundTx( xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_tx, xmr_swap.a_lock_refund_tx_script, xmr_swap.a_lock_tx_id, xmr_swap.a_lock_tx_vout, xmr_offer.lock_time_1, xmr_swap.a_lock_tx_script, xmr_swap.pkal, xmr_swap.pkaf, xmr_offer.lock_time_2, bid.amount, xmr_offer.a_fee_rate, xmr_swap.vkbv) ci_from.verifyLockRefundSpendTx( xmr_swap.a_lock_refund_spend_tx, xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_refund_tx_id, xmr_swap.a_lock_refund_tx_script, xmr_swap.pkal, lock_refund_vout, xmr_swap.a_swap_refund_value, xmr_offer.a_fee_rate, xmr_swap.vkbv) self.log.info('Checking leader\'s lock refund tx signature') prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) v = ci_from.verifyTxSig(xmr_swap.a_lock_refund_tx, xmr_swap.al_lock_refund_tx_sig, xmr_swap.pkal, 0, xmr_swap.a_lock_tx_script, prevout_amount) ensure(v, 'Invalid coin A lock refund tx leader sig') bid.setState(BidStates.BID_RECEIVING_ACC) self.saveBid(bid.bid_id, bid, xmr_swap=xmr_swap) if offer.coin_to != Coins.XMR: with self.mxDB: try: session = scoped_session(self.session_factory) self.receiveXmrBidAccept(bid, session) session.commit() finally: session.close() session.remove() except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) self.setBidError(bid.bid_id, bid, str(ex), xmr_swap=xmr_swap) def watchXmrSwap(self, bid, offer, xmr_swap): self.log.debug('XMR swap in progress, bid %s', bid.bid_id.hex()) self.swaps_in_progress[bid.bid_id] = (bid, offer) coin_from = Coins(offer.coin_from) self.setLastHeightChecked(coin_from, bid.chain_a_height_start) self.addWatchedOutput(coin_from, bid.bid_id, bid.xmr_a_lock_tx.txid.hex(), bid.xmr_a_lock_tx.vout, TxTypes.XMR_SWAP_A_LOCK, SwapTypes.XMR_SWAP) lock_refund_vout = self.ci(coin_from).getLockRefundTxSwapOutput(xmr_swap) self.addWatchedOutput(coin_from, bid.bid_id, xmr_swap.a_lock_refund_tx_id.hex(), lock_refund_vout, TxTypes.XMR_SWAP_A_LOCK_REFUND, SwapTypes.XMR_SWAP) bid.in_progress = 1 def sendXmrBidTxnSigsFtoL(self, bid_id, session): # F -> L: Sending MSG3L self.log.debug('Signing xmr bid lock txns %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) try: kaf = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAF) prevout_amount = ci_from.getLockRefundTxSwapOutputValue(bid, xmr_swap) xmr_swap.af_lock_refund_spend_tx_esig = ci_from.signTxOtVES(kaf, xmr_swap.pkasl, xmr_swap.a_lock_refund_spend_tx, 0, xmr_swap.a_lock_refund_tx_script, prevout_amount) prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) xmr_swap.af_lock_refund_tx_sig = ci_from.signTx(kaf, xmr_swap.a_lock_refund_tx, 0, xmr_swap.a_lock_tx_script, prevout_amount) addLockRefundSigs(self, xmr_swap, ci_from) msg_buf = XmrBidLockTxSigsMessage( bid_msg_id=bid_id, af_lock_refund_spend_tx_esig=xmr_swap.af_lock_refund_spend_tx_esig, af_lock_refund_tx_sig=xmr_swap.af_lock_refund_tx_sig ) msg_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_TXN_SIGS_FL) + msg_bytes.hex() msg_valid = self.getActiveBidMsgValidTime() xmr_swap.coin_a_lock_tx_sigs_l_msg_id = self.sendSmsg(bid.bid_addr, offer.addr_from, payload_hex, msg_valid) self.log.info('Sent XMR_BID_TXN_SIGS_FL %s', xmr_swap.coin_a_lock_tx_sigs_l_msg_id.hex()) a_lock_tx_id = ci_from.getTxid(xmr_swap.a_lock_tx) a_lock_tx_vout = ci_from.getTxOutputPos(xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script) self.log.debug('Waiting for lock txn %s to %s chain for bid %s', a_lock_tx_id.hex(), ci_from.coin_name(), bid_id.hex()) bid.xmr_a_lock_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK, txid=a_lock_tx_id, vout=a_lock_tx_vout, ) bid.xmr_a_lock_tx.setState(TxStates.TX_NONE) bid.setState(BidStates.XMR_SWAP_MSG_SCRIPT_LOCK_TX_SIGS) self.watchXmrSwap(bid, offer, xmr_swap) self.saveBidInSession(bid_id, bid, session, xmr_swap) except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) def sendXmrBidCoinALockTx(self, bid_id, session): # Offerer/Leader. Send coin A lock tx self.log.debug('Sending coin A lock tx for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) kal = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAL) # Prove leader can sign for kal, sent in MSG4F xmr_swap.kal_sig = ci_from.signCompact(kal, 'proof key owned for swap') # Create Script lock spend tx xmr_swap.a_lock_spend_tx = ci_from.createScriptLockSpendTx( xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script, xmr_swap.dest_af, xmr_offer.a_fee_rate, xmr_swap.vkbv) xmr_swap.a_lock_spend_tx_id = ci_from.getTxid(xmr_swap.a_lock_spend_tx) prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) xmr_swap.al_lock_spend_tx_esig = ci_from.signTxOtVES(kal, xmr_swap.pkasf, xmr_swap.a_lock_spend_tx, 0, xmr_swap.a_lock_tx_script, prevout_amount) delay = random.randrange(self.min_delay_event_short, self.max_delay_event_short) self.log.info('Sending lock spend tx message for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.SEND_XMR_SWAP_LOCK_SPEND_MSG, bid_id, session) # publishalocktx lock_tx_signed = ci_from.signTxWithWallet(xmr_swap.a_lock_tx) txid_hex = ci_from.publishTx(lock_tx_signed) vout_pos = ci_from.getTxOutputPos(xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script) self.log.debug('Submitted lock txn %s to %s chain for bid %s', txid_hex, ci_from.coin_name(), bid_id.hex()) bid.xmr_a_lock_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK, txid=bytes.fromhex(txid_hex), vout=vout_pos, ) bid.xmr_a_lock_tx.setState(TxStates.TX_SENT) bid.setState(BidStates.XMR_SWAP_HAVE_SCRIPT_COIN_SPEND_TX) self.watchXmrSwap(bid, offer, xmr_swap) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_PUBLISHED, '', session) self.saveBidInSession(bid_id, bid, session, xmr_swap) def sendXmrBidCoinBLockTx(self, bid_id, session): # Follower sending coin B lock tx self.log.debug('Sending coin B lock tx for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) if bid.debug_ind == DebugTypes.BID_STOP_AFTER_COIN_A_LOCK: self.log.debug('XMR bid %s: Stalling bid for testing: %d.', bid_id.hex(), bid.debug_ind) bid.setState(BidStates.BID_STALLED_FOR_TEST) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), session) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) return if bid.debug_ind == DebugTypes.CREATE_INVALID_COIN_B_LOCK: bid.amount_to -= int(bid.amount_to * 0.1) self.log.debug('XMR bid %s: Debug %d - Reducing lock b txn amount by 10%% to %s.', bid_id.hex(), bid.debug_ind, ci_to.format_amount(bid.amount_to)) self.logBidEvent(bid.bid_id, EventLogTypes.DEBUG_TWEAK_APPLIED, 'ind {}'.format(bid.debug_ind), session) try: b_lock_tx_id = ci_to.publishBLockTx(xmr_swap.pkbv, xmr_swap.pkbs, bid.amount_to, xmr_offer.b_fee_rate) except Exception as ex: error_msg = 'publishBLockTx failed for bid {} with error {}'.format(bid_id.hex(), str(ex)) num_retries = self.countBidEvents(bid, EventLogTypes.FAILED_TX_B_LOCK_PUBLISH, session) if num_retries > 0: error_msg += ', retry no. {}'.format(num_retries) self.log.error(error_msg) if num_retries < 5 and (ci_to.is_transient_error(ex) or self.is_transient_error(ex)): delay = random.randrange(self.min_delay_retry, self.max_delay_retry) self.log.info('Retrying sending xmr swap chain B lock tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.SEND_XMR_SWAP_LOCK_TX_B, bid_id, session) else: self.setBidError(bid_id, bid, 'publishBLockTx failed: ' + str(ex), save_bid=False) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) self.logBidEvent(bid.bid_id, EventLogTypes.FAILED_TX_B_LOCK_PUBLISH, str(ex), session) return self.log.debug('Submitted lock txn %s to %s chain for bid %s', b_lock_tx_id.hex(), ci_to.coin_name(), bid_id.hex()) bid.xmr_b_lock_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_B_LOCK, txid=b_lock_tx_id, ) bid.xmr_b_lock_tx.setState(TxStates.TX_NONE) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_PUBLISHED, '', session) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def sendXmrBidLockRelease(self, bid_id, session): # Leader sending lock tx a release secret (MSG5F) self.log.debug('Sending bid secret for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) msg_buf = XmrBidLockReleaseMessage( bid_msg_id=bid_id, al_lock_spend_tx_esig=xmr_swap.al_lock_spend_tx_esig) msg_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_LOCK_RELEASE_LF) + msg_bytes.hex() msg_valid = self.getActiveBidMsgValidTime() xmr_swap.coin_a_lock_release_msg_id = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) bid.setState(BidStates.XMR_SWAP_LOCK_RELEASED) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def redeemXmrBidCoinALockTx(self, bid_id, session): # Follower redeeming A lock tx self.log.debug('Redeeming coin A lock tx for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) for_ed25519 = True if coin_to == Coins.XMR else False kbsf = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBSF, for_ed25519) kaf = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAF) al_lock_spend_sig = ci_from.decryptOtVES(kbsf, xmr_swap.al_lock_spend_tx_esig) prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) v = ci_from.verifyTxSig(xmr_swap.a_lock_spend_tx, al_lock_spend_sig, xmr_swap.pkal, 0, xmr_swap.a_lock_tx_script, prevout_amount) ensure(v, 'Invalid coin A lock tx spend tx leader sig') af_lock_spend_sig = ci_from.signTx(kaf, xmr_swap.a_lock_spend_tx, 0, xmr_swap.a_lock_tx_script, prevout_amount) v = ci_from.verifyTxSig(xmr_swap.a_lock_spend_tx, af_lock_spend_sig, xmr_swap.pkaf, 0, xmr_swap.a_lock_tx_script, prevout_amount) ensure(v, 'Invalid coin A lock tx spend tx follower sig') witness_stack = [ b'', al_lock_spend_sig, af_lock_spend_sig, xmr_swap.a_lock_tx_script, ] xmr_swap.a_lock_spend_tx = ci_from.setTxSignature(xmr_swap.a_lock_spend_tx, witness_stack) txid = bytes.fromhex(ci_from.publishTx(xmr_swap.a_lock_spend_tx)) self.log.debug('Submitted lock spend txn %s to %s chain for bid %s', txid.hex(), ci_from.coin_name(), bid_id.hex()) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_A_SPEND_TX_PUBLISHED, '', session) bid.xmr_a_lock_spend_tx = SwapTx( bid_id=bid_id, tx_type=TxTypes.XMR_SWAP_A_LOCK_SPEND, txid=txid, ) bid.xmr_a_lock_spend_tx.setState(TxStates.TX_NONE) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def redeemXmrBidCoinBLockTx(self, bid_id, session): # Leader redeeming B lock tx self.log.debug('Redeeming coin B lock tx for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) try: chain_height = ci_to.getChainHeight() lock_tx_depth = (chain_height - bid.xmr_b_lock_tx.chain_height) + 1 if lock_tx_depth < ci_to.depth_spendable(): raise TemporaryError(f'Chain B lock tx depth {lock_tx_depth} < required for spending.') # Extract the leader's decrypted signature and use it to recover the follower's privatekey xmr_swap.al_lock_spend_tx_sig = ci_from.extractLeaderSig(xmr_swap.a_lock_spend_tx) kbsf = ci_from.recoverEncKey(xmr_swap.al_lock_spend_tx_esig, xmr_swap.al_lock_spend_tx_sig, xmr_swap.pkasf) assert(kbsf is not None) for_ed25519 = True if coin_to == Coins.XMR else False kbsl = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBSL, for_ed25519) vkbs = ci_to.sumKeys(kbsl, kbsf) if coin_to == Coins.XMR: address_to = self.getCachedMainWalletAddress(ci_to) else: address_to = self.getCachedStealthAddressForCoin(coin_to) txid = ci_to.spendBLockTx(xmr_swap.b_lock_tx_id, address_to, xmr_swap.vkbv, vkbs, bid.amount_to, xmr_offer.b_fee_rate, bid.chain_b_height_start) self.log.debug('Submitted lock B spend txn %s to %s chain for bid %s', txid.hex(), ci_to.coin_name(), bid_id.hex()) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_SPEND_TX_PUBLISHED, '', session) except Exception as ex: error_msg = 'spendBLockTx failed for bid {} with error {}'.format(bid_id.hex(), str(ex)) num_retries = self.countBidEvents(bid, EventLogTypes.FAILED_TX_B_SPEND, session) if num_retries > 0: error_msg += ', retry no. {}'.format(num_retries) self.log.error(error_msg) if num_retries < 100 and (ci_to.is_transient_error(ex) or self.is_transient_error(ex)): delay = random.randrange(self.min_delay_retry, self.max_delay_retry) self.log.info('Retrying sending xmr swap chain B spend tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_B, bid_id, session) else: self.setBidError(bid_id, bid, 'spendBLockTx failed: ' + str(ex), save_bid=False) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) self.logBidEvent(bid.bid_id, EventLogTypes.FAILED_TX_B_SPEND, str(ex), session) return bid.xmr_b_lock_tx.spend_txid = txid bid.setState(BidStates.XMR_SWAP_NOSCRIPT_TX_REDEEMED) # TODO: Why does using bid.txns error here? self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def recoverXmrBidCoinBLockTx(self, bid_id, session): # Follower recovering B lock tx self.log.debug('Recovering coin B lock tx for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) # Extract the follower's decrypted signature and use it to recover the leader's privatekey af_lock_refund_spend_tx_sig = ci_from.extractFollowerSig(xmr_swap.a_lock_refund_spend_tx) kbsl = ci_from.recoverEncKey(xmr_swap.af_lock_refund_spend_tx_esig, af_lock_refund_spend_tx_sig, xmr_swap.pkasl) assert(kbsl is not None) for_ed25519 = True if coin_to == Coins.XMR else False kbsf = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBSF, for_ed25519) vkbs = ci_to.sumKeys(kbsl, kbsf) try: if offer.coin_to == Coins.XMR: address_to = self.getCachedMainWalletAddress(ci_to) else: address_to = self.getCachedStealthAddressForCoin(coin_to) txid = ci_to.spendBLockTx(xmr_swap.b_lock_tx_id, address_to, xmr_swap.vkbv, vkbs, bid.amount_to, xmr_offer.b_fee_rate, bid.chain_b_height_start) self.log.debug('Submitted lock B refund txn %s to %s chain for bid %s', txid.hex(), ci_to.coin_name(), bid_id.hex()) self.logBidEvent(bid.bid_id, EventLogTypes.LOCK_TX_B_REFUND_TX_PUBLISHED, '', session) except Exception as ex: # TODO: Make min-conf 10? error_msg = 'spendBLockTx refund failed for bid {} with error {}'.format(bid_id.hex(), str(ex)) num_retries = self.countBidEvents(bid, EventLogTypes.FAILED_TX_B_REFUND, session) if num_retries > 0: error_msg += ', retry no. {}'.format(num_retries) self.log.error(error_msg) str_error = str(ex) if num_retries < 100 and (ci_to.is_transient_error(ex) or self.is_transient_error(ex)): delay = random.randrange(self.min_delay_retry, self.max_delay_retry) self.log.info('Retrying sending xmr swap chain B refund tx for bid %s in %d seconds', bid_id.hex(), delay) self.createActionInSession(delay, ActionTypes.RECOVER_XMR_SWAP_LOCK_TX_B, bid_id, session) else: self.setBidError(bid_id, bid, 'spendBLockTx for refund failed: ' + str(ex), save_bid=False) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) self.logBidEvent(bid.bid_id, EventLogTypes.FAILED_TX_B_REFUND, str_error, session) return bid.xmr_b_lock_tx.spend_txid = txid bid.setState(BidStates.XMR_SWAP_NOSCRIPT_TX_RECOVERED) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def sendXmrBidCoinALockSpendTxMsg(self, bid_id, session): # Send MSG4F L -> F self.log.debug('Sending coin A lock spend tx msg for xmr bid %s', bid_id.hex()) bid, xmr_swap = self.getXmrBidFromSession(session, bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOfferFromSession(session, bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) ci_from = self.ci(offer.coin_from) msg_buf = XmrBidLockSpendTxMessage( bid_msg_id=bid_id, a_lock_spend_tx=xmr_swap.a_lock_spend_tx, kal_sig=xmr_swap.kal_sig) msg_bytes = msg_buf.SerializeToString() payload_hex = str.format('{:02x}', MessageTypes.XMR_BID_LOCK_SPEND_TX_LF) + msg_bytes.hex() msg_valid = self.getActiveBidMsgValidTime() xmr_swap.coin_a_lock_refund_spend_tx_msg_id = self.sendSmsg(offer.addr_from, bid.bid_addr, payload_hex, msg_valid) bid.setState(BidStates.XMR_SWAP_MSG_SCRIPT_LOCK_SPEND_TX) self.saveBidInSession(bid_id, bid, session, xmr_swap, save_in_progress=offer) def processXmrBidCoinALockSigs(self, msg): # Leader processing MSG3L self.log.debug('Processing xmr coin a follower lock sigs msg %s', msg['msgid']) now = int(time.time()) msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = XmrBidLockTxSigsMessage() msg_data.ParseFromString(msg_bytes) ensure(len(msg_data.bid_msg_id) == 28, 'Bad bid_msg_id length') bid_id = msg_data.bid_msg_id bid, xmr_swap = self.getXmrBid(bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOffer(bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) coin_from = Coins(offer.coin_from) coin_to = Coins(offer.coin_to) ci_from = self.ci(coin_from) ci_to = self.ci(coin_to) try: xmr_swap.af_lock_refund_spend_tx_esig = msg_data.af_lock_refund_spend_tx_esig xmr_swap.af_lock_refund_tx_sig = msg_data.af_lock_refund_tx_sig for_ed25519 = True if coin_to == Coins.XMR else False kbsl = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KBSL, for_ed25519) kal = self.getPathKey(coin_from, coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAL) xmr_swap.af_lock_refund_spend_tx_sig = ci_from.decryptOtVES(kbsl, xmr_swap.af_lock_refund_spend_tx_esig) prevout_amount = ci_from.getLockRefundTxSwapOutputValue(bid, xmr_swap) al_lock_refund_spend_tx_sig = ci_from.signTx(kal, xmr_swap.a_lock_refund_spend_tx, 0, xmr_swap.a_lock_refund_tx_script, prevout_amount) self.log.debug('Setting lock refund spend tx sigs') witness_stack = [ b'', al_lock_refund_spend_tx_sig, xmr_swap.af_lock_refund_spend_tx_sig, bytes((1,)), xmr_swap.a_lock_refund_tx_script, ] signed_tx = ci_from.setTxSignature(xmr_swap.a_lock_refund_spend_tx, witness_stack) ensure(signed_tx, 'setTxSignature failed') xmr_swap.a_lock_refund_spend_tx = signed_tx v = ci_from.verifyTxSig(xmr_swap.a_lock_refund_spend_tx, xmr_swap.af_lock_refund_spend_tx_sig, xmr_swap.pkaf, 0, xmr_swap.a_lock_refund_tx_script, prevout_amount) ensure(v, 'Invalid signature for lock refund spend txn') addLockRefundSigs(self, xmr_swap, ci_from) delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Sending coin A lock tx for xmr bid %s in %d seconds', bid_id.hex(), delay) self.createAction(delay, ActionTypes.SEND_XMR_SWAP_LOCK_TX_A, bid_id) bid.setState(BidStates.XMR_SWAP_MSG_SCRIPT_LOCK_TX_SIGS) self.saveBid(bid_id, bid, xmr_swap=xmr_swap) except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) self.setBidError(bid_id, bid, str(ex)) def processXmrBidLockSpendTx(self, msg): # Follower receiving MSG4F self.log.debug('Processing xmr bid lock spend tx msg %s', msg['msgid']) now = int(time.time()) msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = XmrBidLockSpendTxMessage() msg_data.ParseFromString(msg_bytes) ensure(len(msg_data.bid_msg_id) == 28, 'Bad bid_msg_id length') bid_id = msg_data.bid_msg_id bid, xmr_swap = self.getXmrBid(bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOffer(bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) ci_from = self.ci(Coins(offer.coin_from)) ci_to = self.ci(Coins(offer.coin_to)) try: xmr_swap.a_lock_spend_tx = msg_data.a_lock_spend_tx xmr_swap.a_lock_spend_tx_id = ci_from.getTxid(xmr_swap.a_lock_spend_tx) xmr_swap.kal_sig = msg_data.kal_sig ci_from.verifyLockSpendTx( xmr_swap.a_lock_spend_tx, xmr_swap.a_lock_tx, xmr_swap.a_lock_tx_script, xmr_swap.dest_af, xmr_offer.a_fee_rate, xmr_swap.vkbv) ci_from.verifyCompact(xmr_swap.pkal, 'proof key owned for swap', xmr_swap.kal_sig) bid.setState(BidStates.XMR_SWAP_HAVE_SCRIPT_COIN_SPEND_TX) bid.setState(BidStates.XMR_SWAP_MSG_SCRIPT_LOCK_SPEND_TX) self.saveBid(bid_id, bid, xmr_swap=xmr_swap) except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) self.setBidError(bid_id, bid, str(ex)) # Update copy of bid in swaps_in_progress self.swaps_in_progress[bid_id] = (bid, offer) def processXmrSplitMessage(self, msg): self.log.debug('Processing xmr split msg %s', msg['msgid']) now = int(time.time()) msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = XmrSplitMessage() msg_data.ParseFromString(msg_bytes) # Validate data ensure(len(msg_data.msg_id) == 28, 'Bad msg_id length') if msg_data.msg_type == XmrSplitMsgTypes.BID or msg_data.msg_type == XmrSplitMsgTypes.BID_ACCEPT: try: session = scoped_session(self.session_factory) q = session.execute('SELECT COUNT(*) FROM xmr_split_data WHERE bid_id = x\'{}\' AND msg_type = {} AND msg_sequence = {}'.format(msg_data.msg_id.hex(), msg_data.msg_type, msg_data.sequence)).first() num_exists = q[0] if num_exists > 0: self.log.warning('Ignoring duplicate xmr_split_data entry: ({}, {}, {})'.format(msg_data.msg_id.hex(), msg_data.msg_type, msg_data.sequence)) return dbr = XmrSplitData() dbr.bid_id = msg_data.msg_id dbr.msg_type = msg_data.msg_type dbr.msg_sequence = msg_data.sequence dbr.dleag = msg_data.dleag dbr.created_at = now session.add(dbr) session.commit() finally: session.close() session.remove() def processXmrLockReleaseMessage(self, msg): self.log.debug('Processing xmr secret msg %s', msg['msgid']) now = int(time.time()) msg_bytes = bytes.fromhex(msg['hex'][2:-2]) msg_data = XmrBidLockReleaseMessage() msg_data.ParseFromString(msg_bytes) # Validate data ensure(len(msg_data.bid_msg_id) == 28, 'Bad msg_id length') bid_id = msg_data.bid_msg_id bid, xmr_swap = self.getXmrBid(bid_id) ensure(bid, 'Bid not found: {}.'.format(bid_id.hex())) ensure(xmr_swap, 'XMR swap not found: {}.'.format(bid_id.hex())) offer, xmr_offer = self.getXmrOffer(bid.offer_id, sent=False) ensure(offer, 'Offer not found: {}.'.format(bid.offer_id.hex())) ensure(xmr_offer, 'XMR offer not found: {}.'.format(bid.offer_id.hex())) ci_from = self.ci(Coins(offer.coin_from)) xmr_swap.al_lock_spend_tx_esig = msg_data.al_lock_spend_tx_esig try: prevout_amount = ci_from.getLockTxSwapOutputValue(bid, xmr_swap) v = ci_from.verifyTxOtVES( xmr_swap.a_lock_spend_tx, xmr_swap.al_lock_spend_tx_esig, xmr_swap.pkal, xmr_swap.pkasf, 0, xmr_swap.a_lock_tx_script, prevout_amount) ensure(v, 'verifyTxOtVES failed for chain a lock tx leader esig') except Exception as ex: if self.debug: self.log.error(traceback.format_exc()) self.setBidError(bid_id, bid, str(ex)) self.swaps_in_progress[bid_id] = (bid, offer) return delay = random.randrange(self.min_delay_event, self.max_delay_event) self.log.info('Redeeming coin A lock tx for xmr bid %s in %d seconds', bid_id.hex(), delay) self.createAction(delay, ActionTypes.REDEEM_XMR_SWAP_LOCK_TX_A, bid_id) bid.setState(BidStates.XMR_SWAP_LOCK_RELEASED) self.saveBid(bid_id, bid, xmr_swap=xmr_swap) self.swaps_in_progress[bid_id] = (bid, offer) def processMsg(self, msg): self.mxDB.acquire() try: msg_type = int(msg['hex'][:2], 16) rv = None if msg_type == MessageTypes.OFFER: self.processOffer(msg) elif msg_type == MessageTypes.BID: self.processBid(msg) elif msg_type == MessageTypes.BID_ACCEPT: self.processBidAccept(msg) elif msg_type == MessageTypes.XMR_BID_FL: self.processXmrBid(msg) elif msg_type == MessageTypes.XMR_BID_ACCEPT_LF: self.processXmrBidAccept(msg) elif msg_type == MessageTypes.XMR_BID_TXN_SIGS_FL: self.processXmrBidCoinALockSigs(msg) elif msg_type == MessageTypes.XMR_BID_LOCK_SPEND_TX_LF: self.processXmrBidLockSpendTx(msg) elif msg_type == MessageTypes.XMR_BID_SPLIT: self.processXmrSplitMessage(msg) elif msg_type == MessageTypes.XMR_BID_LOCK_RELEASE_LF: self.processXmrLockReleaseMessage(msg) if msg_type == MessageTypes.OFFER_REVOKE: self.processOfferRevoke(msg) except Exception as ex: self.log.error('processMsg %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) self.logEvent(Concepts.NETWORK_MESSAGE, bytes.fromhex(msg['msgid']), EventLogTypes.ERROR, str(ex), None) finally: self.mxDB.release() def processZmqSmsg(self): message = self.zmqSubscriber.recv() clear = self.zmqSubscriber.recv() if message[0] == 3: # Paid smsg return # TODO: Switch to paid? msg_id = message[2:] options = {'encoding': 'hex', 'setread': True} num_tries = 5 for i in range(num_tries + 1): try: msg = self.callrpc('smsg', [msg_id.hex(), options]) break except Exception as e: if 'Unknown message id' in str(e) and i < num_tries: time.sleep(1) else: raise e self.processMsg(msg) def update(self): try: # while True: message = self.zmqSubscriber.recv(flags=zmq.NOBLOCK) if message == b'smsg': self.processZmqSmsg() except zmq.Again as ex: pass except Exception as ex: self.log.error('smsg zmq %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) self.mxDB.acquire() try: # TODO: Wait for blocks / txns, would need to check multiple coins now = int(time.time()) if now - self._last_checked_progress >= self.check_progress_seconds: to_remove = [] for bid_id, v in self.swaps_in_progress.items(): try: if self.checkBidState(bid_id, v[0], v[1]) is True: to_remove.append((bid_id, v[0], v[1])) except Exception as ex: if self.debug: self.log.error('checkBidState %s', traceback.format_exc()) if self.is_transient_error(ex): self.log.warning('checkBidState %s %s', bid_id.hex(), str(ex)) self.logBidEvent(bid_id, EventLogTypes.SYSTEM_WARNING, 'No connection to daemon', session=None) else: self.log.error('checkBidState %s %s', bid_id.hex(), str(ex)) self.setBidError(bid_id, v[0], str(ex)) for bid_id, bid, offer in to_remove: self.deactivateBid(None, offer, bid) self._last_checked_progress = now if now - self._last_checked_watched >= self.check_watched_seconds: for k, c in self.coin_clients.items(): if k == Coins.PART_ANON or k == Coins.PART_BLIND: continue if len(c['watched_outputs']) > 0: self.checkForSpends(k, c) self._last_checked_watched = now if now - self._last_checked_expired >= self.check_expired_seconds: self.expireMessages() self._last_checked_expired = now if now - self._last_checked_actions >= self.check_actions_seconds: self.checkQueuedActions() self._last_checked_actions = now if now - self._last_checked_xmr_swaps >= self.check_xmr_swaps_seconds: self.checkXmrSwaps() self._last_checked_xmr_swaps = now except Exception as ex: self.log.error('update %s', str(ex)) if self.debug: self.log.error(traceback.format_exc()) finally: self.mxDB.release() def manualBidUpdate(self, bid_id, data): self.log.info('Manually updating bid %s', bid_id.hex()) self.mxDB.acquire() try: bid, offer = self.getBidAndOffer(bid_id) ensure(bid, 'Bid not found {}'.format(bid_id.hex())) ensure(offer, 'Offer not found {}'.format(bid.offer_id.hex())) has_changed = False if bid.state != data['bid_state']: bid.setState(data['bid_state']) self.log.debug('Set state to %s', strBidState(bid.state)) has_changed = True if bid.debug_ind != data['debug_ind']: if bid.debug_ind is None and data['debug_ind'] == -1: pass # Already unset else: self.log.debug('Bid %s Setting debug flag: %s', bid_id.hex(), data['debug_ind']) bid.debug_ind = data['debug_ind'] has_changed = True if data['kbs_other'] is not None: return recoverNoScriptTxnWithKey(self, bid_id, data['kbs_other']) if has_changed: session = scoped_session(self.session_factory) try: activate_bid = False if bid.state and isActiveBidState(bid.state): activate_bid = True if activate_bid: self.activateBid(session, bid) else: self.deactivateBid(session, offer, bid) self.saveBidInSession(bid_id, bid, session) session.commit() finally: session.close() session.remove() else: raise ValueError('No changes') finally: self.mxDB.release() def editSettings(self, coin_name, data): self.log.info('Updating settings %s', coin_name) with self.mxDB: settings_cc = self.settings['chainclients'][coin_name] settings_changed = False suggest_reboot = False if 'lookups' in data: if settings_cc.get('chain_lookups', 'local') != data['lookups']: settings_changed = True settings_cc['chain_lookups'] = data['lookups'] for coin, cc in self.coin_clients.items(): if cc['name'] == coin_name: cc['chain_lookups'] = data['lookups'] break for setting in ('manage_daemon', 'rpchost', 'rpcport', 'automatically_select_daemon'): if setting not in data: continue if settings_cc.get(setting) != data[setting]: settings_changed = True suggest_reboot = True settings_cc[setting] = data[setting] if 'remotedaemonurls' in data: remotedaemonurls_in = data['remotedaemonurls'].split('\n') remotedaemonurls = set() for url in remotedaemonurls_in: if url.count(':') > 0: remotedaemonurls.add(url.strip()) if set(settings_cc.get('remote_daemon_urls', [])) != remotedaemonurls: settings_cc['remote_daemon_urls'] = list(remotedaemonurls) settings_changed = True suggest_reboot = True if 'fee_priority' in data: new_fee_priority = data['fee_priority'] ensure(new_fee_priority >= 0 and new_fee_priority < 4, 'Invalid priority') if settings_cc.get('fee_priority', 0) != new_fee_priority: settings_changed = True settings_cc['fee_priority'] = new_fee_priority for coin, cc in self.coin_clients.items(): if cc['name'] == coin_name: cc['fee_priority'] = new_fee_priority self.ci(coin).setFeePriority(new_fee_priority) break if 'conf_target' in data: new_conf_target = data['conf_target'] ensure(new_conf_target >= 1 and new_conf_target < 33, 'Invalid conf_target') if settings_cc.get('conf_target', 2) != new_conf_target: settings_changed = True settings_cc['conf_target'] = new_conf_target for coin, cc in self.coin_clients.items(): if cc['name'] == coin_name: cc['conf_target'] = new_conf_target self.ci(coin).setConfTarget(new_conf_target) break if 'anon_tx_ring_size' in data: new_anon_tx_ring_size = data['anon_tx_ring_size'] ensure(new_anon_tx_ring_size >= 3 and new_anon_tx_ring_size < 33, 'Invalid anon_tx_ring_size') if settings_cc.get('anon_tx_ring_size', 12) != new_anon_tx_ring_size: settings_changed = True settings_cc['anon_tx_ring_size'] = new_anon_tx_ring_size for coin, cc in self.coin_clients.items(): if cc['name'] == coin_name: cc['anon_tx_ring_size'] = new_anon_tx_ring_size self.ci(coin).setAnonTxRingSize(new_anon_tx_ring_size) break if settings_changed: settings_path = os.path.join(self.data_dir, cfg.CONFIG_FILENAME) shutil.copyfile(settings_path, settings_path + '.last') with open(settings_path, 'w') as fp: json.dump(self.settings, fp, indent=4) return settings_changed, suggest_reboot def enableCoin(self, coin_name): self.log.info('Enabling coin %s', coin_name) coin_id = self.getCoinIdFromName(coin_name) if coin_id in (Coins.PART, Coins.PART_BLIND, Coins.PART_ANON): raise ValueError('Invalid coin') settings_cc = self.settings['chainclients'][coin_name] if 'connection_type_prev' not in settings_cc: raise ValueError('Can\'t find previous value.') settings_cc['connection_type'] = settings_cc['connection_type_prev'] del settings_cc['connection_type_prev'] if 'manage_daemon_prev' in settings_cc: settings_cc['manage_daemon'] = settings_cc['manage_daemon_prev'] del settings_cc['manage_daemon_prev'] if 'manage_wallet_daemon_prev' in settings_cc: settings_cc['manage_wallet_daemon'] = settings_cc['manage_wallet_daemon_prev'] del settings_cc['manage_wallet_daemon_prev'] settings_path = os.path.join(self.data_dir, cfg.CONFIG_FILENAME) shutil.copyfile(settings_path, settings_path + '.last') with open(settings_path, 'w') as fp: json.dump(self.settings, fp, indent=4) # Client must be restarted def disableCoin(self, coin_name): self.log.info('Disabling coin %s', coin_name) coin_id = self.getCoinIdFromName(coin_name) if coin_id in (Coins.PART, Coins.PART_BLIND, Coins.PART_ANON): raise ValueError('Invalid coin') settings_cc = self.settings['chainclients'][coin_name] if settings_cc['connection_type'] != 'rpc': raise ValueError('Already disabled.') settings_cc['manage_daemon_prev'] = settings_cc['manage_daemon'] settings_cc['manage_daemon'] = False settings_cc['connection_type_prev'] = settings_cc['connection_type'] settings_cc['connection_type'] = 'none' if 'manage_wallet_daemon' in settings_cc: settings_cc['manage_wallet_daemon_prev'] = settings_cc['manage_wallet_daemon'] settings_cc['manage_wallet_daemon'] = False settings_path = os.path.join(self.data_dir, cfg.CONFIG_FILENAME) shutil.copyfile(settings_path, settings_path + '.last') with open(settings_path, 'w') as fp: json.dump(self.settings, fp, indent=4) # Client must be restarted def getSummary(self, opts=None): num_watched_outputs = 0 for c, v in self.coin_clients.items(): if c in (Coins.PART_ANON, Coins.PART_BLIND): continue num_watched_outputs += len(v['watched_outputs']) now = int(time.time()) q_str = '''SELECT COUNT(CASE WHEN was_sent THEN 1 ELSE NULL END) AS count_sent, COUNT(CASE WHEN was_received THEN 1 ELSE NULL END) AS count_received, COUNT(CASE WHEN was_received AND state = {} AND expire_at > {} THEN 1 ELSE NULL END) AS count_available FROM bids WHERE active_ind = 1'''.format(BidStates.BID_RECEIVED, now) q = self.engine.execute(q_str).first() bids_sent = q[0] bids_received = q[1] bids_available = q[2] q_str = '''SELECT COUNT(CASE WHEN expire_at > {} THEN 1 ELSE NULL END) AS count_active, COUNT(CASE WHEN was_sent THEN 1 ELSE NULL END) AS count_sent FROM offers WHERE active_ind = 1'''.format(now) q = self.engine.execute(q_str).first() num_offers = q[0] num_sent_offers = q[1] rv = { 'network': self.chain, 'num_swapping': len(self.swaps_in_progress), 'num_network_offers': num_offers, 'num_sent_offers': num_sent_offers, 'num_recv_bids': bids_received, 'num_sent_bids': bids_sent, 'num_available_bids': bids_available, 'num_watched_outputs': num_watched_outputs, } return rv def getBlockchainInfo(self, coin): ci = self.ci(coin) try: blockchaininfo = ci.getBlockchainInfo() rv = { 'version': self.coin_clients[coin]['core_version'], 'name': ci.coin_name(), 'blocks': blockchaininfo['blocks'], 'synced': '{0:.2f}'.format(round(blockchaininfo['verificationprogress'], 2)), } if 'known_block_count' in blockchaininfo: rv['known_block_count'] = blockchaininfo['known_block_count'] if 'bootstrapping' in blockchaininfo: rv['bootstrapping'] = blockchaininfo['bootstrapping'] return rv except Exception as e: self.log.warning('getWalletInfo failed with: %s', str(e)) def getWalletInfo(self, coin): ci = self.ci(coin) try: walletinfo = ci.getWalletInfo() scale = chainparams[coin]['decimal_places'] rv = { 'deposit_address': self.getCachedAddressForCoin(coin), 'balance': format_amount(make_int(walletinfo['balance'], scale), scale), 'unconfirmed': format_amount(make_int(walletinfo.get('unconfirmed_balance'), scale), scale), 'expected_seed': ci.knownWalletSeed(), } if coin == Coins.PART: rv['stealth_address'] = self.getCachedStealthAddressForCoin(Coins.PART) rv['anon_balance'] = walletinfo['anon_balance'] rv['anon_pending'] = walletinfo['unconfirmed_anon'] + walletinfo['immature_anon_balance'] rv['blind_balance'] = walletinfo['blind_balance'] rv['blind_unconfirmed'] = walletinfo['unconfirmed_blind'] elif coin == Coins.XMR: rv['main_address'] = self.getCachedMainWalletAddress(ci) return rv except Exception as e: self.log.warning('getWalletInfo failed with: %s', str(e)) def addWalletInfoRecord(self, coin, info_type, wi): coin_id = int(coin) self.mxDB.acquire() try: now = int(time.time()) session = scoped_session(self.session_factory) session.add(Wallets(coin_id=coin, balance_type=info_type, wallet_data=json.dumps(wi), created_at=now)) query_str = f'DELETE FROM wallets WHERE (coin_id = {coin_id} AND balance_type = {info_type}) AND record_id NOT IN (SELECT record_id FROM wallets WHERE coin_id = {coin_id} AND balance_type = {info_type} ORDER BY created_at DESC LIMIT 3 )' session.execute(query_str) session.commit() except Exception as e: self.log.error(f'addWalletInfoRecord {e}') finally: session.close() session.remove() self.mxDB.release() def updateWalletInfo(self, coin): # Store wallet info to db so it's available after startup try: bi = self.getBlockchainInfo(coin) if bi: self.addWalletInfoRecord(coin, 0, bi) # monero-wallet-rpc is slow/unresponsive while syncing wi = self.getWalletInfo(coin) if wi: self.addWalletInfoRecord(coin, 1, wi) except Exception as e: self.log.error(f'updateWalletInfo {e}') finally: self._updating_wallets_info[int(coin)] = False def updateWalletsInfo(self, force_update=False, only_coin=None): now = int(time.time()) if not force_update and now - self._last_updated_wallets_info < 30: return for c in Coins: if only_coin is not None and c != only_coin: continue if c not in chainparams: continue if self.coin_clients[c]['connection_type'] == 'rpc': self._updating_wallets_info[int(c)] = True self.thread_pool.submit(self.updateWalletInfo, c) if only_coin is None: self._last_updated_wallets_info = int(time.time()) def getWalletsInfo(self, opts=None): rv = {} for c in Coins: if c not in chainparams: continue if self.coin_clients[c]['connection_type'] == 'rpc': key = chainparams[c]['ticker'] if opts.get('ticker_key', False) else c try: rv[key] = self.getWalletInfo(c) rv[key].update(self.getBlockchainInfo(c)) except Exception as ex: rv[key] = {'name': chainparams[c]['name'].capitalize(), 'error': str(ex)} return rv def getCachedWalletsInfo(self, opts=None): rv = {} # Requires? self.mxDB.acquire() try: session = scoped_session(self.session_factory) where_str = '' if opts is not None and 'coin_id' in opts: where_str = 'WHERE coin_id = {}'.format(opts['coin_id']) inner_str = f'SELECT coin_id, balance_type, MAX(created_at) as max_created_at FROM wallets {where_str} GROUP BY coin_id, balance_type' query_str = 'SELECT a.coin_id, a.balance_type, wallet_data, created_at FROM wallets a, ({}) b WHERE a.coin_id = b.coin_id AND a.balance_type = b.balance_type AND a.created_at = b.max_created_at'.format(inner_str) q = session.execute(query_str) for row in q: coin_id = row[0] if self.coin_clients[coin_id]['connection_type'] != 'rpc': # Skip cached info if coin was disabled continue wallet_data = json.loads(row[2]) if row[1] == 1: wallet_data['lastupdated'] = row[3] wallet_data['updating'] = self._updating_wallets_info.get(coin_id, False) # Ensure the latest deposit address is displayed q = session.execute('SELECT value FROM kv_string WHERE key = "receive_addr_{}"'.format(chainparams[coin_id]['name'])) for row in q: wallet_data['deposit_address'] = row[0] if coin_id in rv: rv[coin_id].update(wallet_data) else: rv[coin_id] = wallet_data finally: session.close() session.remove() if opts is not None and 'coin_id' in opts: return rv for c in Coins: if c not in chainparams: continue if self.coin_clients[c]['connection_type'] == 'rpc': coin_id = int(c) if coin_id not in rv: rv[coin_id] = { 'name': chainparams[c]['name'].capitalize(), 'no_data': True, 'updating': self._updating_wallets_info.get(coin_id, False), } return rv def countAcceptedBids(self, offer_id=None): self.mxDB.acquire() try: session = scoped_session(self.session_factory) if offer_id: q = session.execute('SELECT COUNT(*) FROM bids WHERE state >= {} AND offer_id = x\'{}\''.format(BidStates.BID_ACCEPTED, offer_id.hex())).first() else: q = session.execute('SELECT COUNT(*) FROM bids WHERE state >= {}'.format(BidStates.BID_ACCEPTED)).first() return q[0] finally: session.close() session.remove() self.mxDB.release() def listOffers(self, sent=False, filters={}, with_bid_info=False): self.mxDB.acquire() try: rv = [] now = int(time.time()) session = scoped_session(self.session_factory) if with_bid_info: subquery = session.query(sa.func.sum(Bid.amount).label('completed_bid_amount')).filter(sa.and_(Bid.offer_id == Offer.offer_id, Bid.state == BidStates.SWAP_COMPLETED)).correlate(Offer).scalar_subquery() q = session.query(Offer, subquery) else: q = session.query(Offer) if sent: q = q.filter(Offer.was_sent == True) # noqa: E712 else: q = q.filter(sa.and_(Offer.expire_at > now, Offer.active_ind == 1)) filter_offer_id = filters.get('offer_id', None) if filter_offer_id is not None: q = q.filter(Offer.offer_id == filter_offer_id) filter_coin_from = filters.get('coin_from', None) if filter_coin_from and filter_coin_from > -1: q = q.filter(Offer.coin_from == int(filter_coin_from)) filter_coin_to = filters.get('coin_to', None) if filter_coin_to and filter_coin_to > -1: q = q.filter(Offer.coin_to == int(filter_coin_to)) order_dir = filters.get('sort_dir', 'desc') order_by = filters.get('sort_by', 'created_at') if order_by == 'created_at': q = q.order_by(Offer.created_at.desc() if order_dir == 'desc' else Offer.created_at.asc()) elif order_by == 'rate': q = q.order_by(Offer.rate.desc() if order_dir == 'desc' else Offer.rate.asc()) limit = filters.get('limit', None) if limit is not None: q = q.limit(limit) offset = filters.get('offset', None) if offset is not None: q = q.offset(offset) for row in q: offer = row[0] if with_bid_info else row # Show offers for enabled coins only try: ci_from = self.ci(offer.coin_from) ci_to = self.ci(offer.coin_to) except Exception as e: continue if with_bid_info: rv.append((offer, 0 if row[1] is None else row[1])) else: rv.append(offer) return rv finally: session.close() session.remove() self.mxDB.release() def listBids(self, sent=False, offer_id=None, for_html=False, filters={}, with_identity_info=False): self.mxDB.acquire() try: rv = [] now = int(time.time()) session = scoped_session(self.session_factory) identity_fields = '' query_str = 'SELECT bids.created_at, bids.expire_at, bids.bid_id, bids.offer_id, bids.amount, bids.state, bids.was_received, tx1.state, tx2.state, offers.coin_from, bids.rate, bids.bid_addr {} FROM bids '.format(identity_fields) + \ 'LEFT JOIN offers ON offers.offer_id = bids.offer_id ' + \ 'LEFT JOIN transactions AS tx1 ON tx1.bid_id = bids.bid_id AND tx1.tx_type = {} '.format(TxTypes.ITX) + \ 'LEFT JOIN transactions AS tx2 ON tx2.bid_id = bids.bid_id AND tx2.tx_type = {} '.format(TxTypes.PTX) query_str += 'WHERE bids.active_ind = 1 ' filter_bid_id = filters.get('bid_id', None) if filter_bid_id is not None: query_str += 'AND bids.bid_id = x\'{}\' '.format(filter_bid_id.hex()) if offer_id is not None: query_str += 'AND bids.offer_id = x\'{}\' '.format(offer_id.hex()) elif sent: query_str += 'AND bids.was_sent = 1 ' else: query_str += 'AND bids.was_received = 1 ' bid_state_ind = filters.get('bid_state_ind', -1) if bid_state_ind != -1: query_str += 'AND bids.state = {} '.format(bid_state_ind) with_expired = filters.get('with_expired', True) if with_expired is not True: query_str += 'AND bids.expire_at > {} '.format(now) sort_dir = filters.get('sort_dir', 'DESC').upper() sort_by = filters.get('sort_by', 'created_at') query_str += f' ORDER BY bids.{sort_by} {sort_dir}' limit = filters.get('limit', None) if limit is not None: query_str += f' LIMIT {limit}' offset = filters.get('offset', None) if offset is not None: query_str += f' OFFSET {offset}' q = session.execute(query_str) for row in q: rv.append(row) return rv finally: session.close() session.remove() self.mxDB.release() def listSwapsInProgress(self, for_html=False): self.mxDB.acquire() try: rv = [] for k, v in self.swaps_in_progress.items(): rv.append((k, v[0].offer_id.hex(), v[0].state, v[0].getITxState(), v[0].getPTxState())) return rv finally: self.mxDB.release() def listWatchedOutputs(self): self.mxDB.acquire() try: rv = [] rv_heights = [] for c, v in self.coin_clients.items(): if c in (Coins.PART_ANON, Coins.PART_BLIND): # exclude duplicates continue if self.coin_clients[c]['connection_type'] == 'rpc': rv_heights.append((c, v['last_height_checked'])) for o in v['watched_outputs']: rv.append((c, o.bid_id, o.txid_hex, o.vout, o.tx_type)) return (rv, rv_heights) finally: self.mxDB.release() def listAllSMSGAddresses(self, addr_id=None): filters = '' if addr_id is not None: filters += f' WHERE addr_id = {addr_id} ' self.mxDB.acquire() try: session = scoped_session(self.session_factory) rv = [] query_str = f'SELECT addr_id, addr, use_type, active_ind, created_at, note, pubkey FROM smsgaddresses {filters} ORDER BY created_at' q = session.execute(query_str) for row in q: rv.append({ 'id': row[0], 'addr': row[1], 'type': row[2], 'active_ind': row[3], 'created_at': row[4], 'note': row[5], 'pubkey': row[6], }) return rv finally: session.close() session.remove() self.mxDB.release() def listAutomationStrategies(self, filters={}): self.mxDB.acquire() try: rv = [] session = scoped_session(self.session_factory) query_str = 'SELECT strats.record_id, strats.label, strats.type_ind FROM automationstrategies AS strats' query_str += ' WHERE strats.active_ind = 1 ' type_ind = filters.get('type_ind', None) if type_ind is not None: query_str += f' AND strats.type_ind = {type_ind} ' sort_dir = filters.get('sort_dir', 'DESC').upper() sort_by = filters.get('sort_by', 'created_at') query_str += f' ORDER BY strats.{sort_by} {sort_dir}' limit = filters.get('limit', None) if limit is not None: query_str += f' LIMIT {limit}' offset = filters.get('offset', None) if offset is not None: query_str += f' OFFSET {offset}' q = session.execute(query_str) for row in q: rv.append(row) return rv finally: session.close() session.remove() self.mxDB.release() def getAutomationStrategy(self, strategy_id): self.mxDB.acquire() try: session = scoped_session(self.session_factory) return session.query(AutomationStrategy).filter_by(record_id=strategy_id).first() finally: session.close() session.remove() self.mxDB.release() def getLinkedStrategy(self, linked_type, linked_id): self.mxDB.acquire() try: session = scoped_session(self.session_factory) query_str = 'SELECT links.strategy_id, strats.label FROM automationlinks links' + \ ' LEFT JOIN automationstrategies strats ON strats.record_id = links.strategy_id' + \ ' WHERE links.linked_type = {} AND links.linked_id = x\'{}\' AND links.active_ind = 1'.format(int(linked_type), linked_id.hex()) q = session.execute(query_str).first() return q finally: session.close() session.remove() self.mxDB.release() def newSMSGAddress(self, use_type=AddressTypes.RECV_OFFER, addressnote=None, session=None): now = int(time.time()) use_session = None try: if session: use_session = session else: self.mxDB.acquire() use_session = scoped_session(self.session_factory) v = use_session.query(DBKVString).filter_by(key='smsg_chain_id').first() if not v: smsg_account = self.callrpc('extkey', ['deriveAccount', 'smsg keys', '78900']) smsg_account_id = smsg_account['account'] self.log.info(f'Creating smsg keys account {smsg_account_id}') extkey = self.callrpc('extkey') # Disable receiving on all chains smsg_chain_id = None extkey = self.callrpc('extkey', ['account', smsg_account_id]) for c in extkey['chains']: rv = self.callrpc('extkey', ['options', c['id'], 'receive_on', 'false']) if c['function'] == 'active_external': smsg_chain_id = c['id'] if not smsg_chain_id: raise ValueError('External chain not found.') use_session.add(DBKVString( key='smsg_chain_id', value=smsg_chain_id)) else: smsg_chain_id = v.value smsg_chain = self.callrpc('extkey', ['key', smsg_chain_id]) num_derives = int(smsg_chain['num_derives']) new_addr = self.callrpc('deriverangekeys', [num_derives, num_derives, smsg_chain_id, False, True])[0] num_derives += 1 rv = self.callrpc('extkey', ['options', smsg_chain_id, 'num_derives', str(num_derives)]) addr_info = self.callrpc('getaddressinfo', [new_addr]) self.callrpc('smsgaddlocaladdress', [new_addr]) # Enable receiving smsgs use_session.add(SmsgAddress(addr=new_addr, use_type=use_type, active_ind=1, created_at=now, note=addressnote, pubkey=addr_info['pubkey'])) return new_addr, addr_info['pubkey'] finally: if session is None: use_session.commit() use_session.close() use_session.remove() self.mxDB.release() def addSMSGAddress(self, pubkey_hex, addressnote=None): self.mxDB.acquire() try: session = scoped_session(self.session_factory) now = int(time.time()) ci = self.ci(Coins.PART) add_addr = ci.pubkey_to_address(bytes.fromhex(pubkey_hex)) self.callrpc('smsgaddaddress', [add_addr, pubkey_hex]) session.add(SmsgAddress(addr=add_addr, use_type=AddressTypes.SEND_OFFER, active_ind=1, created_at=now, note=addressnote, pubkey=pubkey_hex)) session.commit() return add_addr finally: session.close() session.remove() self.mxDB.release() def editSMSGAddress(self, address, active_ind, addressnote): self.mxDB.acquire() try: session = scoped_session(self.session_factory) mode = '-' if active_ind == 0 else '+' self.callrpc('smsglocalkeys', ['recv', mode, address]) session.execute('UPDATE smsgaddresses SET active_ind = {}, note = "{}" WHERE addr = "{}"'.format(active_ind, addressnote, address)) session.commit() finally: session.close() session.remove() self.mxDB.release() def listSmsgAddresses(self, use_type_str): if use_type_str == 'offer_send_from': use_type = AddressTypes.OFFER elif use_type_str == 'offer_send_to': use_type = AddressTypes.SEND_OFFER elif use_type_str == 'bid': use_type = AddressTypes.BID else: raise ValueError('Unknown address type') self.mxDB.acquire() try: session = scoped_session(self.session_factory) rv = [] q = session.execute('SELECT sa.addr, ki.label FROM smsgaddresses AS sa LEFT JOIN knownidentities AS ki ON sa.addr = ki.address WHERE sa.use_type = {} AND sa.active_ind = 1 ORDER BY sa.addr_id DESC'.format(use_type)) for row in q: rv.append((row[0], row[1])) return rv finally: session.close() session.remove() self.mxDB.release() def createCoinALockRefundSwipeTx(self, ci, bid, offer, xmr_swap, xmr_offer): self.log.debug('Creating %s lock refund swipe tx', ci.coin_name()) pkh_dest = ci.decodeAddress(self.getReceiveAddressForCoin(ci.coin_type())) spend_tx = ci.createScriptLockRefundSpendToFTx( xmr_swap.a_lock_refund_tx, xmr_swap.a_lock_refund_tx_script, pkh_dest, xmr_offer.a_fee_rate, xmr_swap.vkbv) vkaf = self.getPathKey(offer.coin_from, offer.coin_to, bid.created_at, xmr_swap.contract_count, KeyTypes.KAF) prevout_amount = ci.getLockRefundTxSwapOutputValue(bid, xmr_swap) sig = ci.signTx(vkaf, spend_tx, 0, xmr_swap.a_lock_refund_tx_script, prevout_amount) witness_stack = [ sig, b'', xmr_swap.a_lock_refund_tx_script, ] xmr_swap.a_lock_refund_swipe_tx = ci.setTxSignature(spend_tx, witness_stack) def setBidDebugInd(self, bid_id, debug_ind): self.log.debug('Bid %s Setting debug flag: %s', bid_id.hex(), debug_ind) bid = self.getBid(bid_id) bid.debug_ind = debug_ind # Update in memory copy. TODO: Improve bid_in_progress = self.swaps_in_progress.get(bid_id, None) if bid_in_progress: bid_in_progress[0].debug_ind = debug_ind self.saveBid(bid_id, bid) def storeOfferRevoke(self, offer_id, sig): self.log.debug('Storing revoke request for offer: %s', offer_id.hex()) for pair in self._possibly_revoked_offers: if offer_id == pair[0]: return False self._possibly_revoked_offers.appendleft((offer_id, sig)) return True def isOfferRevoked(self, offer_id, offer_addr_from): for pair in self._possibly_revoked_offers: if offer_id == pair[0]: signature_enc = base64.b64encode(pair[1]).decode('utf-8') passed = self.callcoinrpc(Coins.PART, 'verifymessage', [offer_addr_from, signature_enc, offer_id.hex() + '_revoke']) return True if passed is True else False # _possibly_revoked_offers should not contain duplicates return False def updateBidInProgress(self, bid): swap_in_progress = self.swaps_in_progress.get(bid.bid_id, None) if swap_in_progress is None: return self.swaps_in_progress[bid.bid_id] = (bid, swap_in_progress[1]) def getAddressLabel(self, addresses): self.mxDB.acquire() try: session = scoped_session(self.session_factory) rv = [] for a in addresses: v = session.query(KnownIdentity).filter_by(address=a).first() rv.append('' if (not v or not v.label) else v.label) return rv finally: session.close() session.remove() self.mxDB.release() def add_connection(self, host, port, peer_pubkey): self.log.info('add_connection %s %d %s', host, port, peer_pubkey.hex()) self._network.add_connection(host, port, peer_pubkey) def get_network_info(self): if not self._network: return {'Error': 'Not Initialised'} return self._network.get_info() def lookupRates(self, coin_from, coin_to): self.log.debug('lookupRates {}, {}'.format(coin_from, coin_to)) bittrex_api_v3 = 'https://api.bittrex.com/v3' try: self.setConnectionParameters() rv = {} try: ci_from = self.ci(int(coin_from)) ci_to = self.ci(int(coin_to)) headers = {'Connection': 'close'} name_from = ci_from.chainparams()['name'] name_to = ci_to.chainparams()['name'] url = 'https://api.coingecko.com/api/v3/simple/price?ids={},{}&vs_currencies=usd'.format(name_from, name_to) self.log.debug(f'lookupRates: {url}') start = time.time() req = urllib.request.Request(url, headers=headers) js = json.loads(urllib.request.urlopen(req, timeout=10).read()) js['time_taken'] = time.time() - start rate = float(js[name_from]['usd']) / float(js[name_to]['usd']) js['rate_inferred'] = ci_to.format_amount(rate, conv_int=True, r=1) rv['coingecko'] = js except Exception as e: rv['coingecko_error'] = str(e) try: ticker_from = ci_from.chainparams()['ticker'] ticker_to = ci_to.chainparams()['ticker'] if ci_from.coin_type() == Coins.BTC: pair = f'{ticker_to}-{ticker_from}' url = f'{bittrex_api_v3}/markets/{pair}/ticker' self.log.debug(f'lookupRates: {url}') start = time.time() req = urllib.request.Request(url, headers=headers) js = json.loads(urllib.request.urlopen(req, timeout=10).read()) js['time_taken'] = time.time() - start js['pair'] = pair try: rate_inverted = ci_from.make_int(1.0 / float(js['lastTradeRate']), r=1) js['rate_inferred'] = ci_to.format_amount(rate_inverted) except Exception as e: self.log.warning('lookupRates error: %s', str(e)) js['rate_inferred'] = 'error' rv['bittrex'] = js elif ci_to.coin_type() == Coins.BTC: pair = f'{ticker_from}-{ticker_to}' url = f'{bittrex_api_v3}/markets/{pair}/ticker' self.log.debug(f'lookupRates: {url}') start = time.time() req = urllib.request.Request(url, headers=headers) js = json.loads(urllib.request.urlopen(req, timeout=10).read()) js['time_taken'] = time.time() - start js['pair'] = pair js['rate_last'] = js['lastTradeRate'] rv['bittrex'] = js else: pair = f'{ticker_from}-BTC' url = f'{bittrex_api_v3}/markets/{pair}/ticker' self.log.debug(f'lookupRates: {url}') start = time.time() req = urllib.request.Request(url, headers=headers) js_from = json.loads(urllib.request.urlopen(req, timeout=10).read()) js_from['time_taken'] = time.time() - start js_from['pair'] = pair pair = f'{ticker_to}-BTC' url = f'{bittrex_api_v3}/markets/{pair}/ticker' self.log.debug(f'lookupRates: {url}') start = time.time() req = urllib.request.Request(url, headers=headers) js_to = json.loads(urllib.request.urlopen(req, timeout=10).read()) js_to['time_taken'] = time.time() - start js_to['pair'] = pair try: rate_inferred = float(js_from['lastTradeRate']) / float(js_to['lastTradeRate']) rate_inferred = ci_to.format_amount(rate, conv_int=True, r=1) except Exception as e: rate_inferred = 'error' rv['bittrex'] = {'from': js_from, 'to': js_to, 'rate_inferred': rate_inferred} except Exception as e: rv['bittrex_error'] = str(e) return rv finally: self.popConnectionParameters()