electrum

Electrum Bitcoin wallet
git clone https://git.parazyd.org/electrum
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commit e555ea650ef49ddd1bd9f9144cac7237261c1c8c
parent 673f89f0d2d7b0c5563361a41195d29d68e477d8
Author: bitromortac <bitromortac@protonmail.com>
Date:   Tue, 29 Dec 2020 17:40:01 +0100

lnpeer: add unit test for upfront shutdown script

Diffstat:
Melectrum/tests/test_lnchannel.py | 30+++++++++++++++++++++++-------
Melectrum/tests/test_lnpeer.py | 76++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
2 files changed, 97 insertions(+), 9 deletions(-)

diff --git a/electrum/tests/test_lnchannel.py b/electrum/tests/test_lnchannel.py @@ -34,8 +34,6 @@ from electrum import lnchannel from electrum import lnutil from electrum import bip32 as bip32_utils from electrum.lnutil import SENT, LOCAL, REMOTE, RECEIVED -from electrum.lnutil import FeeUpdate -from electrum.ecc import sig_string_from_der_sig from electrum.logging import console_stderr_handler from electrum.lnchannel import ChannelState from electrum.json_db import StoredDict @@ -46,7 +44,11 @@ from . import ElectrumTestCase one_bitcoin_in_msat = bitcoin.COIN * 1000 -def create_channel_state(funding_txid, funding_index, funding_sat, is_initiator, local_amount, remote_amount, privkeys, other_pubkeys, seed, cur, nex, other_node_id, l_dust, r_dust, l_csv, r_csv): + +def create_channel_state(funding_txid, funding_index, funding_sat, is_initiator, + local_amount, remote_amount, privkeys, other_pubkeys, + seed, cur, nex, other_node_id, l_dust, r_dust, l_csv, + r_csv): assert local_amount > 0 assert remote_amount > 0 channel_id, _ = lnpeer.channel_id_from_funding_tx(funding_txid, funding_index) @@ -134,16 +136,30 @@ def create_test_channels(*, feerate=6000, local_msat=None, remote_msat=None, alice_seed = random_gen.get_bytes(32) bob_seed = random_gen.get_bytes(32) - alice_first = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(alice_seed, lnutil.RevocationStore.START_INDEX), "big")) - bob_first = lnutil.secret_to_pubkey(int.from_bytes(lnutil.get_per_commitment_secret_from_seed(bob_seed, lnutil.RevocationStore.START_INDEX), "big")) + alice_first = lnutil.secret_to_pubkey( + int.from_bytes(lnutil.get_per_commitment_secret_from_seed( + alice_seed, lnutil.RevocationStore.START_INDEX), "big")) + bob_first = lnutil.secret_to_pubkey( + int.from_bytes(lnutil.get_per_commitment_secret_from_seed( + bob_seed, lnutil.RevocationStore.START_INDEX), "big")) alice, bob = ( lnchannel.Channel( - create_channel_state(funding_txid, funding_index, funding_sat, True, local_amount, remote_amount, alice_privkeys, bob_pubkeys, alice_seed, None, bob_first, other_node_id=bob_pubkey, l_dust=200, r_dust=1300, l_csv=5, r_csv=4), + create_channel_state( + funding_txid, funding_index, funding_sat, True, local_amount, + remote_amount, alice_privkeys, bob_pubkeys, alice_seed, None, + bob_first, other_node_id=bob_pubkey, l_dust=200, r_dust=1300, + l_csv=5, r_csv=4 + ), name=bob_name, initial_feerate=feerate), lnchannel.Channel( - create_channel_state(funding_txid, funding_index, funding_sat, False, remote_amount, local_amount, bob_privkeys, alice_pubkeys, bob_seed, None, alice_first, other_node_id=alice_pubkey, l_dust=1300, r_dust=200, l_csv=4, r_csv=5), + create_channel_state( + funding_txid, funding_index, funding_sat, False, remote_amount, + local_amount, bob_privkeys, alice_pubkeys, bob_seed, None, + alice_first, other_node_id=alice_pubkey, l_dust=1300, r_dust=200, + l_csv=4, r_csv=5 + ), name=alice_name, initial_feerate=feerate) ) diff --git a/electrum/tests/test_lnpeer.py b/electrum/tests/test_lnpeer.py @@ -12,14 +12,15 @@ from typing import Iterable, NamedTuple from aiorpcx import TaskGroup +from electrum import bitcoin from electrum import constants from electrum.network import Network from electrum.ecc import ECPrivkey from electrum import simple_config, lnutil from electrum.lnaddr import lnencode, LnAddr, lndecode from electrum.bitcoin import COIN, sha256 -from electrum.util import bh2u, create_and_start_event_loop, NetworkRetryManager -from electrum.lnpeer import Peer +from electrum.util import bh2u, create_and_start_event_loop, NetworkRetryManager, bfh +from electrum.lnpeer import Peer, UpfrontShutdownScriptViolation from electrum.lnutil import LNPeerAddr, Keypair, privkey_to_pubkey from electrum.lnutil import LightningPeerConnectionClosed, RemoteMisbehaving from electrum.lnutil import PaymentFailure, LnFeatures, HTLCOwner @@ -121,6 +122,7 @@ class MockLNWallet(Logger, NetworkRetryManager[LNPeerAddr]): self.wallet = MockWallet() self.features = LnFeatures(0) self.features |= LnFeatures.OPTION_DATA_LOSS_PROTECT_OPT + self.features |= LnFeatures.OPTION_UPFRONT_SHUTDOWN_SCRIPT_OPT self.pending_payments = defaultdict(asyncio.Future) for chan in chans: chan.lnworker = self @@ -605,6 +607,76 @@ class TestPeer(ElectrumTestCase): with self.assertRaises(concurrent.futures.CancelledError): run(f()) + @needs_test_with_all_chacha20_implementations + def test_close_upfront_shutdown_script(self): + alice_channel, bob_channel = create_test_channels() + + # create upfront shutdown script for bob, alice doesn't use upfront + # shutdown script + bob_uss_pub = lnutil.privkey_to_pubkey(os.urandom(32)) + bob_uss_addr = bitcoin.pubkey_to_address('p2wpkh', bh2u(bob_uss_pub)) + bob_uss = bfh(bitcoin.address_to_script(bob_uss_addr)) + + # bob commits to close to bob_uss + alice_channel.config[HTLCOwner.REMOTE].upfront_shutdown_script = bob_uss + # but bob closes to some receiving address, which we achieve by not + # setting the upfront shutdown script in the channel config + bob_channel.config[HTLCOwner.LOCAL].upfront_shutdown_script = b'' + + p1, p2, w1, w2, q1, q2 = self.prepare_peers(alice_channel, bob_channel) + w1.network.config.set_key('dynamic_fees', False) + w2.network.config.set_key('dynamic_fees', False) + w1.network.config.set_key('fee_per_kb', 5000) + w2.network.config.set_key('fee_per_kb', 1000) + + async def test(): + async def close(): + await asyncio.wait_for(p1.initialized, 1) + await asyncio.wait_for(p2.initialized, 1) + # bob closes channel with different shutdown script + await p1.close_channel(alice_channel.channel_id) + gath.cancel() + + async def main_loop(peer): + async with peer.taskgroup as group: + await group.spawn(peer._message_loop()) + await group.spawn(peer.htlc_switch()) + + coros = [close(), main_loop(p1), main_loop(p2)] + gath = asyncio.gather(*coros) + await gath + + with self.assertRaises(UpfrontShutdownScriptViolation): + run(test()) + + # bob sends the same upfront_shutdown_script has he announced + alice_channel.config[HTLCOwner.REMOTE].upfront_shutdown_script = bob_uss + bob_channel.config[HTLCOwner.LOCAL].upfront_shutdown_script = bob_uss + + p1, p2, w1, w2, q1, q2 = self.prepare_peers(alice_channel, bob_channel) + w1.network.config.set_key('dynamic_fees', False) + w2.network.config.set_key('dynamic_fees', False) + w1.network.config.set_key('fee_per_kb', 5000) + w2.network.config.set_key('fee_per_kb', 1000) + + async def test(): + async def close(): + await asyncio.wait_for(p1.initialized, 1) + await asyncio.wait_for(p2.initialized, 1) + await p1.close_channel(alice_channel.channel_id) + gath.cancel() + + async def main_loop(peer): + async with peer.taskgroup as group: + await group.spawn(peer._message_loop()) + await group.spawn(peer.htlc_switch()) + + coros = [close(), main_loop(p1), main_loop(p2)] + gath = asyncio.gather(*coros) + await gath + with self.assertRaises(asyncio.CancelledError): + run(test()) + def test_channel_usage_after_closing(self): alice_channel, bob_channel = create_test_channels() p1, p2, w1, w2, q1, q2 = self.prepare_peers(alice_channel, bob_channel)