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474 lines
22 KiB
474 lines
22 KiB
import logging |
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import pprint |
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import os |
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import sys |
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import time |
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import numbers |
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from jmbase import get_log, jmprint, bintohex, hextobin |
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from .configure import jm_single, validate_address, is_burn_destination |
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from .schedule import human_readable_schedule_entry, tweak_tumble_schedule,\ |
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schedule_to_text |
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from .wallet import BaseWallet, estimate_tx_fee, compute_tx_locktime, \ |
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FidelityBondMixin |
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from jmbitcoin import make_shuffled_tx, amount_to_str, \ |
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PartiallySignedTransaction, CMutableTxOut,\ |
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human_readable_transaction |
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from jmbase.support import EXIT_SUCCESS |
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log = get_log() |
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|
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""" |
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Utility functions for tumbler-style takers; |
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Currently re-used by CLI script tumbler.py and joinmarket-qt |
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""" |
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|
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def get_utxo_scripts(wallet: BaseWallet, utxos: dict) -> list: |
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# given a Joinmarket wallet and a set of utxos |
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# as passed from `get_utxos_by_mixdepth` at one mixdepth, |
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# return the list of script types for each utxo |
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script_types = [] |
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for utxo in utxos.values(): |
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script_types.append(wallet.get_outtype(utxo["address"])) |
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return script_types |
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|
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def direct_send(wallet_service, amount, mixdepth, destination, answeryes=False, |
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accept_callback=None, info_callback=None, error_callback=None, |
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return_transaction=False, with_final_psbt=False, |
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optin_rbf=False, custom_change_addr=None): |
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"""Send coins directly from one mixdepth to one destination address; |
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does not need IRC. Sweep as for normal sendpayment (set amount=0). |
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If answeryes is True, callback/command line query is not performed. |
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If optin_rbf is True, the nSequence values are changed as appropriate. |
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If accept_callback is None, command line input for acceptance is assumed, |
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else this callback is called: |
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accept_callback: |
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==== |
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args: |
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deserialized tx, destination address, amount in satoshis, |
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fee in satoshis, custom change address |
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|
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returns: |
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True if accepted, False if not |
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==== |
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info_callback and error_callback takes one parameter, the information |
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message (when tx is pushed or error occured), and returns nothing. |
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|
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This function returns: |
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1. False if there is any failure. |
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2. The txid if transaction is pushed, and return_transaction is False, |
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and with_final_psbt is False. |
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3. The full CMutableTransaction if return_transaction is True and |
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with_final_psbt is False. |
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4. The PSBT object if with_final_psbt is True, and in |
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this case the transaction is *NOT* broadcast. |
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""" |
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#Sanity checks |
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assert validate_address(destination)[0] or is_burn_destination(destination) |
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assert custom_change_addr is None or validate_address(custom_change_addr)[0] |
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assert amount > 0 or custom_change_addr is None |
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assert isinstance(mixdepth, numbers.Integral) |
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assert mixdepth >= 0 |
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assert isinstance(amount, numbers.Integral) |
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assert amount >=0 |
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assert isinstance(wallet_service.wallet, BaseWallet) |
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|
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if is_burn_destination(destination): |
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#Additional checks |
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if not isinstance(wallet_service.wallet, FidelityBondMixin): |
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log.error("Only fidelity bond wallets can burn coins") |
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return |
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if answeryes: |
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log.error("Burning coins not allowed without asking for confirmation") |
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return |
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if mixdepth != FidelityBondMixin.FIDELITY_BOND_MIXDEPTH: |
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log.error("Burning coins only allowed from mixdepth " + str( |
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FidelityBondMixin.FIDELITY_BOND_MIXDEPTH)) |
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return |
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if amount != 0: |
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log.error("Only sweeping allowed when burning coins, to keep the tx " + |
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"small. Tip: use the coin control feature to freeze utxos") |
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return |
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|
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txtype = wallet_service.get_txtype() |
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|
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# if the output is of a script type not currently |
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# handled by our wallet code, we can't use information |
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# to help us calculate fees, but fall back to default. |
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# This is represented by a return value `None`. |
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# Note that this does *not* imply we accept any nonstandard |
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# output script, because we already called `validate_address`. |
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outtype = wallet_service.get_outtype(destination) |
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|
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if amount == 0: |
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#doing a sweep |
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utxos = wallet_service.get_utxos_by_mixdepth()[mixdepth] |
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if utxos == {}: |
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log.error( |
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"There are no available utxos in mixdepth: " + str(mixdepth) + ", quitting.") |
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return |
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total_inputs_val = sum([va['value'] for u, va in utxos.items()]) |
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script_types = get_utxo_scripts(wallet_service.wallet, utxos) |
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fee_est = estimate_tx_fee(len(utxos), 1, txtype=script_types, outtype=outtype) |
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outs = [{"address": destination, "value": total_inputs_val - fee_est}] |
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else: |
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change_type = txtype |
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if custom_change_addr: |
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change_type = wallet_service.get_outtype(custom_change_addr) |
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if change_type is None: |
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# we don't recognize this type; best we can do is revert to default, |
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# even though it may be inaccurate: |
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change_type = txtype |
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if outtype is None: |
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# we don't recognize the destination script type, |
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# so set it as the same as the change (which will usually |
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# be the same as the spending wallet, but see above for custom) |
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# Notice that this is handled differently to the sweep case above, |
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# because we must use a list - there is more than one output |
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outtype = change_type |
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outtypes = [change_type, outtype] |
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# not doing a sweep; we will have change. |
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# 8 inputs to be conservative; note we cannot account for the possibility |
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# of non-standard input types at this point. |
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initial_fee_est = estimate_tx_fee(8, 2, txtype=txtype, outtype=outtypes) |
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utxos = wallet_service.select_utxos(mixdepth, amount + initial_fee_est, |
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includeaddr=True) |
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script_types = get_utxo_scripts(wallet_service.wallet, utxos) |
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if len(utxos) < 8: |
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fee_est = estimate_tx_fee(len(utxos), 2, txtype=script_types, outtype=outtypes) |
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else: |
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fee_est = initial_fee_est |
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total_inputs_val = sum([va['value'] for u, va in utxos.items()]) |
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changeval = total_inputs_val - fee_est - amount |
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outs = [{"value": amount, "address": destination}] |
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change_addr = wallet_service.get_internal_addr(mixdepth) if custom_change_addr is None \ |
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else custom_change_addr |
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outs.append({"value": changeval, "address": change_addr}) |
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|
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#compute transaction locktime, has special case for spending timelocked coins |
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tx_locktime = compute_tx_locktime() |
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if mixdepth == FidelityBondMixin.FIDELITY_BOND_MIXDEPTH and \ |
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isinstance(wallet_service.wallet, FidelityBondMixin): |
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for outpoint, utxo in utxos.items(): |
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path = wallet_service.script_to_path(utxo["script"]) |
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if not FidelityBondMixin.is_timelocked_path(path): |
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continue |
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path_locktime = path[-1] |
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tx_locktime = max(tx_locktime, path_locktime+1) |
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#compute_tx_locktime() gives a locktime in terms of block height |
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#timelocked addresses use unix time instead |
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#OP_CHECKLOCKTIMEVERIFY can only compare like with like, so we |
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#must use unix time as the transaction locktime |
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|
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#Now ready to construct transaction |
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log.info("Using a fee of: " + amount_to_str(fee_est) + ".") |
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if amount != 0: |
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log.info("Using a change value of: " + amount_to_str(changeval) + ".") |
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tx = make_shuffled_tx(list(utxos.keys()), outs, 2, tx_locktime) |
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|
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if optin_rbf: |
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for inp in tx.vin: |
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inp.nSequence = 0xffffffff - 2 |
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inscripts = {} |
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spent_outs = [] |
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for i, txinp in enumerate(tx.vin): |
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u = (txinp.prevout.hash[::-1], txinp.prevout.n) |
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inscripts[i] = (utxos[u]["script"], utxos[u]["value"]) |
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spent_outs.append(CMutableTxOut(utxos[u]["value"], |
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utxos[u]["script"])) |
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if with_final_psbt: |
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# here we have the PSBTWalletMixin do the signing stage |
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# for us: |
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new_psbt = wallet_service.create_psbt_from_tx(tx, spent_outs=spent_outs) |
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serialized_psbt, err = wallet_service.sign_psbt(new_psbt.serialize()) |
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if err: |
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log.error("Failed to sign PSBT, quitting. Error message: " + err) |
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return False |
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new_psbt_signed = PartiallySignedTransaction.deserialize(serialized_psbt) |
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print("Completed PSBT created: ") |
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print(wallet_service.human_readable_psbt(new_psbt_signed)) |
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return new_psbt_signed |
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else: |
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success, msg = wallet_service.sign_tx(tx, inscripts) |
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if not success: |
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log.error("Failed to sign transaction, quitting. Error msg: " + msg) |
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return |
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log.info("Got signed transaction:\n") |
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log.info(human_readable_transaction(tx)) |
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actual_amount = amount if amount != 0 else total_inputs_val - fee_est |
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sending_info = "Sends: " + amount_to_str(actual_amount) + \ |
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" to destination: " + destination |
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if custom_change_addr: |
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sending_info += ", custom change to: " + custom_change_addr |
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log.info(sending_info) |
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if not answeryes: |
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if not accept_callback: |
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if input('Would you like to push to the network? (y/n):')[0] != 'y': |
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log.info("You chose not to broadcast the transaction, quitting.") |
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return False |
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else: |
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accepted = accept_callback(human_readable_transaction(tx), |
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destination, actual_amount, fee_est, |
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custom_change_addr) |
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if not accepted: |
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return False |
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if jm_single().bc_interface.pushtx(tx.serialize()): |
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txid = bintohex(tx.GetTxid()[::-1]) |
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successmsg = "Transaction sent: " + txid |
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cb = log.info if not info_callback else info_callback |
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cb(successmsg) |
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txinfo = txid if not return_transaction else tx |
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return txinfo |
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else: |
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errormsg = "Transaction broadcast failed!" |
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cb = log.error if not error_callback else error_callback |
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cb(errormsg) |
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return False |
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|
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def get_tumble_log(logsdir): |
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tumble_log = logging.getLogger('tumbler') |
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tumble_log.setLevel(logging.DEBUG) |
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logFormatter = logging.Formatter( |
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('%(asctime)s %(message)s')) |
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fileHandler = logging.FileHandler(os.path.join(logsdir, 'TUMBLE.log')) |
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fileHandler.setFormatter(logFormatter) |
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tumble_log.addHandler(fileHandler) |
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return tumble_log |
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|
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def get_total_tumble_amount(mixdepth_balance_dict, schedule): |
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# calculating total coins that will be included in a tumble; |
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# in almost all cases all coins (unfrozen) in wallet will be tumbled, |
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# though it's technically possible with a very small mixdepthcount, to start |
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# at say m0, and only go through to 2 or 3, such that coins in 4 are untouched |
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# in phase 2 (after having been swept in phase 1). |
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used_mixdepths = set() |
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[used_mixdepths.add(x[0]) for x in schedule] |
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total_tumble_amount = int(0) |
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for i in used_mixdepths: |
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total_tumble_amount += mixdepth_balance_dict[i] |
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# Note; we assert since callers will have called `get_tumble_schedule`, |
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# which will already have thrown if no funds, so this would be a logic error. |
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assert total_tumble_amount > 0, "no coins to tumble." |
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return total_tumble_amount |
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|
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def restart_wait(txid): |
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""" Returns true only if the transaction txid is seen in the wallet, |
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and confirmed (it must be an in-wallet transaction since it always |
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spends coins from the wallet). |
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""" |
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res = jm_single().bc_interface.get_transaction(hextobin(txid)) |
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if not res: |
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return False |
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if res["confirmations"] == 0: |
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return False |
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if res["confirmations"] < 0: |
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log.warn("Tx: " + txid + " has a conflict, abandoning.") |
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sys.exit(EXIT_SUCCESS) |
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else: |
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log.debug("Tx: " + str(txid) + " has " + str( |
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res["confirmations"]) + " confirmations.") |
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return True |
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|
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def restart_waiter(txid): |
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"""Given a txid, wait for confirmation by polling the blockchain |
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interface instance. Note that this is currently blocking, so only used |
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by the CLI version; the Qt/GUI uses the underlying restart_wait() fn. |
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""" |
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ctr = 0 |
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log.info("Waiting for confirmation of last transaction: " + str(txid)) |
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while True: |
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time.sleep(10) |
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ctr += 1 |
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if not (ctr % 12): |
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log.debug("Still waiting for confirmation of last transaction ...") |
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if restart_wait(txid): |
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break |
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log.info("The previous transaction is now in a block; continuing.") |
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|
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def unconf_update(taker, schedulefile, tumble_log, addtolog=False): |
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"""Provide a Taker object, a schedulefile path for the current |
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schedule, a logging instance for TUMBLE.log, and a parameter |
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for whether to update TUMBLE.log. |
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Makes the necessary state updates explained below, including to |
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the wallet. |
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Note that this is re-used for confirmation with addtolog=False, |
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to avoid a repeated entry in the log. |
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""" |
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#on taker side, cache index update is only required after tx |
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#push, to avoid potential of address reuse in case of a crash, |
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#because addresses are not public until broadcast (whereas for makers, |
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#they are public *during* negotiation). So updating the cache here |
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#is sufficient |
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taker.wallet_service.save_wallet() |
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|
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#If honest-only was set, and we are going to continue (e.g. Tumbler), |
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#we switch off the honest-only filter. We also wipe the honest maker |
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#list, because the intention is to isolate the source of liquidity |
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#to exactly those that participated, in 1 transaction (i.e. it's a 1 |
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#transaction feature). This code is here because it *must* be called |
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#before any continuation, even if confirm_callback happens before |
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#unconfirm_callback |
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taker.set_honest_only(False) |
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taker.honest_makers = [] |
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|
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#We persist the fact that the transaction is complete to the |
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#schedule file. Note that if a tweak to the schedule occurred, |
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#it only affects future (non-complete) transactions, so the final |
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#full record should always be accurate; but TUMBLE.log should be |
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#used for checking what actually happened. |
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completion_flag = 1 if not addtolog else taker.txid |
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taker.schedule[taker.schedule_index][-1] = completion_flag |
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with open(schedulefile, "wb") as f: |
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f.write(schedule_to_text(taker.schedule)) |
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|
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if addtolog: |
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tumble_log.info("Completed successfully this entry:") |
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#the log output depends on if it's to INTERNAL |
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hrdestn = None |
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if taker.schedule[taker.schedule_index][3] in ["INTERNAL", "addrask"]: |
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hrdestn = taker.my_cj_addr |
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#Whether sweep or not, the amt is not in satoshis; use taker data |
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hramt = taker.cjamount |
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tumble_log.info(human_readable_schedule_entry( |
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taker.schedule[taker.schedule_index], hramt, hrdestn)) |
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tumble_log.info("Txid was: " + taker.txid) |
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|
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def tumbler_taker_finished_update(taker, schedulefile, tumble_log, options, |
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res, fromtx=False, waittime=0.0, txdetails=None): |
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"""on_finished_callback processing for tumbler. |
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Note that this is *not* the full callback, but provides common |
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processing across command line and other GUI versions. |
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""" |
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|
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if fromtx == "unconfirmed": |
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#unconfirmed event means transaction has been propagated, |
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#we update state to prevent accidentally re-creating it in |
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#any crash/restart condition |
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unconf_update(taker, schedulefile, tumble_log, True) |
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return |
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|
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if fromtx: |
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if res: |
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#this has no effect except in the rare case that confirmation |
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#is immediate; also it does not repeat the log entry. |
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unconf_update(taker, schedulefile, tumble_log, False) |
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#note that Qt does not yet support 'addrask', so this is only |
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#for command line script TODO |
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if taker.schedule[taker.schedule_index+1][3] == 'addrask': |
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jm_single().debug_silence[0] = True |
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jmprint('\n'.join(['=' * 60] * 3)) |
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jmprint('Tumbler requires more addresses to stop amount correlation') |
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jmprint('Obtain a new destination address from your bitcoin recipient') |
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jmprint(' for example click the button that gives a new deposit address') |
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jmprint('\n'.join(['=' * 60] * 1)) |
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while True: |
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destaddr = input('insert new address: ') |
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addr_valid, errormsg = validate_address(destaddr) |
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if addr_valid: |
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break |
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jmprint( |
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'Address ' + destaddr + ' invalid. ' + errormsg + ' try again', |
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"warning") |
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jm_single().debug_silence[0] = False |
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taker.schedule[taker.schedule_index+1][3] = destaddr |
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taker.tdestaddrs.append(destaddr) |
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|
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waiting_message = "Waiting for: " + str(waittime) + " minutes." |
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tumble_log.info(waiting_message) |
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log.info(waiting_message) |
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else: |
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# a transaction failed, either because insufficient makers |
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# (acording to minimum_makers) responded in Phase 1, or not all |
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# makers responded in Phase 2, or the tx was a mempool conflict. |
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# If the tx was a mempool conflict, we should restart with random |
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# maker choice as usual. If someone didn't respond, we'll try to |
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# repeat without the troublemakers. |
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log.info("Schedule entry: " + str( |
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taker.schedule[taker.schedule_index]) + \ |
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" failed after timeout, trying again") |
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taker.add_ignored_makers(taker.nonrespondants) |
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#Is the failure in Phase 2? |
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if not taker.latest_tx is None: |
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if len(taker.nonrespondants) == 0: |
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# transaction was created validly but conflicted in the |
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# mempool; just try again without honest settings; |
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# i.e. fallback to same as Phase 1 failure. |
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log.info("Invalid transaction; possible mempool conflict.") |
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else: |
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#Now we have to set the specific group we want to use, and hopefully |
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#they will respond again as they showed honesty last time. |
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#Note that we must wipe the list first; other honest makers needn't |
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#have the right settings (e.g. max cjamount), so can't be carried |
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#over from earlier transactions. |
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taker.honest_makers = [] |
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taker.add_honest_makers(list(set( |
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taker.maker_utxo_data.keys()).symmetric_difference( |
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set(taker.nonrespondants)))) |
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#If insufficient makers were honest, we can only tweak the schedule. |
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#If enough were, we prefer to restart with them only: |
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log.info("Inside a Phase 2 failure; number of honest " |
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"respondants was: " + str(len(taker.honest_makers))) |
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log.info("They were: " + str(taker.honest_makers)) |
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if len(taker.honest_makers) >= jm_single().config.getint( |
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"POLICY", "minimum_makers"): |
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tumble_log.info("Transaction attempt failed, attempting to " |
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"restart with subset.") |
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tumble_log.info("The paramaters of the failed attempt: ") |
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tumble_log.info(str(taker.schedule[taker.schedule_index])) |
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#we must reset the number of counterparties, as well as fix who they |
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#are; this is because the number is used to e.g. calculate fees. |
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#cleanest way is to reset the number in the schedule before restart. |
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taker.schedule[taker.schedule_index][2] = len(taker.honest_makers) |
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retry_str = "Retrying with: " + str(taker.schedule[ |
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taker.schedule_index][2]) + " counterparties." |
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tumble_log.info(retry_str) |
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log.info(retry_str) |
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taker.set_honest_only(True) |
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taker.schedule_index -= 1 |
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return |
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|
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#There were not enough honest counterparties. |
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#Tumbler is aggressive in trying to complete; we tweak the schedule |
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#from this point in the mixdepth, then try again. |
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tumble_log.info("Transaction attempt failed, tweaking schedule" |
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" and trying again.") |
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tumble_log.info("The paramaters of the failed attempt: ") |
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tumble_log.info(str(taker.schedule[taker.schedule_index])) |
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taker.schedule_index -= 1 |
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taker.schedule = tweak_tumble_schedule(options, taker.schedule, |
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taker.schedule_index, |
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taker.tdestaddrs) |
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tumble_log.info("We tweaked the schedule, the new schedule is:") |
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tumble_log.info(pprint.pformat(taker.schedule)) |
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else: |
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if not res: |
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failure_msg = "Did not complete successfully, shutting down" |
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tumble_log.info(failure_msg) |
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log.info(failure_msg) |
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else: |
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log.info("All transactions completed correctly") |
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tumble_log.info("Completed successfully the last entry:") |
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#Whether sweep or not, the amt is not in satoshis; use taker data |
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hramt = taker.cjamount |
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tumble_log.info(human_readable_schedule_entry( |
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taker.schedule[taker.schedule_index], hramt)) |
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#copy of above, TODO refactor out |
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taker.schedule[taker.schedule_index][5] = 1 |
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with open(schedulefile, "wb") as f: |
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f.write(schedule_to_text(taker.schedule)) |
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|
|
|
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def tumbler_filter_orders_callback(orders_fees, cjamount, taker): |
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"""Since the tumbler does not use interactive fee checking, |
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we use the -x values from the command line instead. |
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""" |
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orders, total_cj_fee = orders_fees |
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abs_cj_fee = 1.0 * total_cj_fee / taker.n_counterparties |
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rel_cj_fee = abs_cj_fee / cjamount |
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log.info('rel/abs average fee = ' + str(rel_cj_fee) + ' / ' + str( |
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abs_cj_fee)) |
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|
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if rel_cj_fee > taker.max_cj_fee[0] and abs_cj_fee > taker.max_cj_fee[1]: |
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log.info("Rejected fees as too high according to options, will " |
|
"retry.") |
|
return "retry" |
|
return True
|
|
|