AaronFiore/electrum
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on_close_channel: fix output index, and simplify lnsweep

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This commit is contained in:
ThomasV
2018-12-12 18:02:55 +01:00
parent 729ddb8ec3
commit 3019aa35cf
2 changed files with 15 additions and 11 deletions
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18
electrum/lnsweep.py
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@@ -151,7 +151,7 @@ def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
remote_revocation_pubkey=other_revocation_pubkey,
to_self_delay=to_self_delay)
if sweep_tx:
txs.append((ctx.txid(), EncumberedTransaction('our_ctx_to_local', sweep_tx, csv_delay=to_self_delay, cltv_expiry=0)))
txs.append(EncumberedTransaction('our_ctx_to_local', sweep_tx, csv_delay=to_self_delay, cltv_expiry=0))
# HTLCs
def create_txns_for_htlc(htlc: 'UpdateAddHtlc', is_received_htlc: bool) -> Tuple[Optional[Transaction], Optional[Transaction]]:
if is_received_htlc:
@@ -184,16 +184,16 @@ def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
for htlc in offered_htlcs:
htlc_tx, to_wallet_tx = create_txns_for_htlc(htlc, is_received_htlc=False)
if htlc_tx and to_wallet_tx:
txs.append((htlc_tx.txid(), EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0)))
txs.append((ctx.txid(), EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry)))
txs.append(EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0))
txs.append(EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry))
# received HTLCs, in our ctx --> "success"
# TODO consider carefully if "included_htlcs" is what we need here
received_htlcs = list(chan.included_htlcs(LOCAL, REMOTE)) # type: List[UpdateAddHtlc]
for htlc in received_htlcs:
htlc_tx, to_wallet_tx = create_txns_for_htlc(htlc, is_received_htlc=True)
if htlc_tx and to_wallet_tx:
txs.append((htlc_tx.txid(), EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0)))
txs.append((ctx.txid(), EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=0)))
txs.append(EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0))
txs.append(EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=0))
return txs
@@ -244,13 +244,13 @@ def create_sweeptxs_for_their_latest_ctx(chan: 'Channel', ctx: Transaction,
delayed_pubkey=this_delayed_pubkey,
sweep_address=sweep_address)
if sweep_tx:
txs.append((ctx.txid(), EncumberedTransaction('their_ctx_to_local', sweep_tx, csv_delay=0, cltv_expiry=0)))
txs.append(EncumberedTransaction('their_ctx_to_local', sweep_tx, csv_delay=0, cltv_expiry=0))
# to_remote
sweep_tx = maybe_create_sweeptx_for_their_ctx_to_remote(ctx=ctx,
sweep_address=sweep_address,
our_payment_privkey=other_payment_privkey)
if sweep_tx:
txs.append((ctx.txid(), EncumberedTransaction('their_ctx_to_remote', sweep_tx, csv_delay=0, cltv_expiry=0)))
txs.append(EncumberedTransaction('their_ctx_to_remote', sweep_tx, csv_delay=0, cltv_expiry=0))
# HTLCs
# from their ctx, we can only redeem HTLCs if the ctx was not revoked,
# as old HTLCs are not stored. (if it was revoked, then we should have presigned txns
@@ -286,13 +286,13 @@ def create_sweeptxs_for_their_latest_ctx(chan: 'Channel', ctx: Transaction,
for htlc in received_htlcs:
sweep_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=True)
if sweep_tx:
txs.append((ctx.txid(), EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry)))
txs.append(EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry))
# offered HTLCs, in their ctx --> "success"
offered_htlcs = chan.included_htlcs_in_their_latest_ctxs(REMOTE)[ctn] # type: List[UpdateAddHtlc]
for htlc in offered_htlcs:
sweep_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=False)
if sweep_tx:
txs.append((ctx.txid(), EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=0)))
txs.append(EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=0))
return txs