148 lines
5.0 KiB
Python
148 lines
5.0 KiB
Python
import logging
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import os
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import shutil
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from bip380.descriptors import Descriptor
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from bip380.miniscript import SatisfactionMaterial
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from test_framework.utils import (
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BITCOIN_BACKEND_TYPE,
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BitcoinBackendType,
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UnixDomainSocketRpc,
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TailableProc,
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VERBOSE,
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LOG_LEVEL,
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LIANAD_PATH,
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wait_for,
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)
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from test_framework.serializations import (
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PSBT,
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CTxInWitness,
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CScriptWitness,
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PSBT_IN_BIP32_DERIVATION,
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PSBT_IN_PARTIAL_SIG,
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PSBT_IN_FINAL_SCRIPTWITNESS,
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)
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class Lianad(TailableProc):
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def __init__(
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self, datadir, signer, multi_desc, bitcoin_backend, legacy_datadir=False
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):
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TailableProc.__init__(self, datadir, verbose=VERBOSE)
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self.datadir = datadir
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self.prefix = os.path.split(datadir)[-1]
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self.signer = signer
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self._poll_interval_secs = 1
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self.multi_desc = multi_desc
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self.receive_desc, self.change_desc = multi_desc.singlepath_descriptors()
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self.conf_file = os.path.join(datadir, "config.toml")
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self.cmd_line = [LIANAD_PATH, "--conf", f"{self.conf_file}"]
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data_directory = os.path.join(datadir, "regtest")
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socket_path = os.path.join(data_directory, "lianad_rpc")
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self.rpc = UnixDomainSocketRpc(socket_path)
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self.bitcoin_backend = bitcoin_backend
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with open(self.conf_file, "w") as f:
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if legacy_datadir:
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f.write(f"data_dir = '{datadir}'\n")
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else:
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f.write(f"data_directory = '{data_directory}'\n")
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f.write(f"log_level = '{LOG_LEVEL}'\n")
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f.write(f'main_descriptor = "{multi_desc}"\n')
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f.write("[bitcoin_config]\n")
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f.write('network = "regtest"\n')
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f.write(f"poll_interval_secs = {self._poll_interval_secs}\n")
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bitcoin_backend.append_to_lianad_conf(self.conf_file)
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@property
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def poll_interval_secs(self):
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"""Return the poll interval in seconds as defined in the config file."""
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return self._poll_interval_secs
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def finalize_psbt(self, psbt):
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"""Create a valid witness for all inputs in the PSBT.
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This will fail if the PSBT input does not contain enough material.
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:param psbt: PSBT of the transaction to be finalized.
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:returns: PSBT with finalized inputs.
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"""
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assert isinstance(psbt, PSBT)
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# Create a witness for each input of the transaction.
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for i, psbt_in in enumerate(psbt.i):
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# First, gather the needed information from the PSBT input.
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# 'hd_keypaths' is of the form {pubkey: (fingerprint, derivation index)}
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fing_der = next(iter(psbt_in.map[PSBT_IN_BIP32_DERIVATION].values()))
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raw_der_path = fing_der[4:]
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der_path = [
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int.from_bytes(raw_der_path[i : i + 4], byteorder="little", signed=True)
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for i in range(0, len(raw_der_path), 4)
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]
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assert len(der_path) == 2
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# Create a copy of the descriptor to derive it at the index used in this input.
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# Then create a satisfaction for it using the signature we just created.
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desc = Descriptor.from_str(
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str(self.receive_desc if der_path[0] == 0 else self.change_desc)
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)
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desc.derive(der_path[1])
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sat_material = SatisfactionMaterial(
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signatures=psbt_in.map[PSBT_IN_PARTIAL_SIG],
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)
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stack = desc.satisfy(sat_material)
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logging.debug(f"Satisfaction for {desc} is {[e.hex() for e in stack]}")
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# Update the transaction inside the PSBT directly.
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assert stack is not None
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psbt_in.map[PSBT_IN_FINAL_SCRIPTWITNESS] = CTxInWitness(
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CScriptWitness(stack)
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)
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psbt.tx.wit.vtxinwit.append(psbt_in.map[PSBT_IN_FINAL_SCRIPTWITNESS])
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return psbt
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def restart_fresh(self, bitcoind):
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"""Delete the internal state of the wallet and restart."""
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self.stop()
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dir_path = os.path.join(self.datadir, "regtest")
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shutil.rmtree(dir_path)
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if BITCOIN_BACKEND_TYPE is BitcoinBackendType.Bitcoind:
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wallet_path = os.path.join(dir_path, "lianad_watchonly_wallet")
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bitcoind.node_rpc.unloadwallet(wallet_path)
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self.start()
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wait_for(
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lambda: self.rpc.getinfo()["block_height"] == bitcoind.rpc.getblockcount()
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)
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def start(self):
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TailableProc.start(self)
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self.wait_for_logs(
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[
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"Database initialized and checked",
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"JSONRPC server started.",
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]
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)
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def stop(self, timeout=5):
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try:
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self.rpc.stop()
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self.wait_for_log(
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"Stopping the liana daemon.",
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)
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self.proc.wait(timeout)
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except Exception as e:
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logging.error(f"{self.prefix} : error when calling stop: '{e}'")
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return TailableProc.stop(self)
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def cleanup(self):
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try:
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self.stop()
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except Exception:
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self.proc.kill()
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