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channel_reestablish: assume that DLP is enabled, because we require it

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ThomasV 2020-02-11 21:32:10 +01:00
parent e42e17779d
commit 69ef9aa3d7
2 changed files with 20 additions and 29 deletions
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48
electrum/lnpeer.py
View file

@ -728,28 +728,21 @@ class Peer(Logger):
oldest_unrevoked_remote_ctn = chan.get_oldest_unrevoked_ctn(REMOTE)
latest_remote_ctn = chan.get_latest_ctn(REMOTE)
next_remote_ctn = chan.get_next_ctn(REMOTE)
assert self.localfeatures & LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT
# send message
dlp_enabled = self.localfeatures & LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT
if dlp_enabled:
if oldest_unrevoked_remote_ctn == 0:
last_rev_secret = 0
else:
last_rev_index = oldest_unrevoked_remote_ctn - 1
last_rev_secret = chan.revocation_store.retrieve_secret(RevocationStore.START_INDEX - last_rev_index)
latest_secret, latest_point = chan.get_secret_and_point(LOCAL, latest_local_ctn)
self.send_message(
"channel_reestablish",
channel_id=chan_id,
next_local_commitment_number=next_local_ctn,
next_remote_revocation_number=oldest_unrevoked_remote_ctn,
your_last_per_commitment_secret=last_rev_secret,
my_current_per_commitment_point=latest_point)
if oldest_unrevoked_remote_ctn == 0:
last_rev_secret = 0
else:
self.send_message(
"channel_reestablish",
channel_id=chan_id,
next_local_commitment_number=next_local_ctn,
next_remote_revocation_number=oldest_unrevoked_remote_ctn)
last_rev_index = oldest_unrevoked_remote_ctn - 1
last_rev_secret = chan.revocation_store.retrieve_secret(RevocationStore.START_INDEX - last_rev_index)
latest_secret, latest_point = chan.get_secret_and_point(LOCAL, latest_local_ctn)
self.send_message(
"channel_reestablish",
channel_id=chan_id,
next_local_commitment_number=next_local_ctn,
next_remote_revocation_number=oldest_unrevoked_remote_ctn,
your_last_per_commitment_secret=last_rev_secret,
my_current_per_commitment_point=latest_point)
self.logger.info(f'channel_reestablish: sent channel_reestablish with '
f'(next_local_ctn={next_local_ctn}, '
f'oldest_unrevoked_remote_ctn={oldest_unrevoked_remote_ctn})')
@ -823,8 +816,7 @@ class Peer(Logger):
# option_data_loss_protect
def are_datalossprotect_fields_valid() -> bool:
if their_local_pcp is None or their_claim_of_our_last_per_commitment_secret is None:
# if DLP was enabled, absence of fields is not OK
return not dlp_enabled
return False
if their_oldest_unrevoked_remote_ctn > 0:
our_pcs, __ = chan.get_secret_and_point(LOCAL, their_oldest_unrevoked_remote_ctn - 1)
else:
@ -845,14 +837,12 @@ class Peer(Logger):
if not are_datalossprotect_fields_valid():
raise RemoteMisbehaving("channel_reestablish: data loss protect fields invalid")
else:
if dlp_enabled and should_close_they_are_ahead:
self.logger.warning(f"channel_reestablish: remote is ahead of us! luckily DLP is enabled. remote PCP: {bh2u(their_local_pcp)}")
# data_loss_protect_remote_pcp is used in lnsweep
chan.set_data_loss_protect_remote_pcp(their_next_local_ctn - 1, their_local_pcp)
self.lnworker.save_channel(chan)
if should_close_they_are_ahead:
self.logger.warning(f"channel_reestablish: remote is ahead of us! They should force-close.")
self.logger.warning(f"channel_reestablish: remote is ahead of us! They should force-close. Remote PCP: {bh2u(their_local_pcp)}")
# data_loss_protect_remote_pcp is used in lnsweep
chan.set_data_loss_protect_remote_pcp(their_next_local_ctn - 1, their_local_pcp)
self.lnworker.save_channel(chan)
chan.peer_state = peer_states.BAD
return
elif should_close_we_are_ahead:

1
electrum/tests/test_lnpeer.py
View file

@ -85,6 +85,7 @@ class MockLNWallet:
self.logs = defaultdict(list)
self.wallet = MockWallet()
self.localfeatures = LnLocalFeatures(0)
self.localfeatures |= LnLocalFeatures.OPTION_DATA_LOSS_PROTECT_OPT
self.pending_payments = defaultdict(asyncio.Future)
def get_invoice_status(self, key):