From a2b6a76e59abd1054b3c49b848fd72fb462ee67c Mon Sep 17 00:00:00 2001 From: Antoine Riard Date: Wed, 6 Feb 2019 20:02:38 -0500 Subject: [PATCH] Delay failure of non-dust HTLC-outputs until solving timeout tx matures Fix tests broken by introduced change --- fuzz/fuzz_targets/full_stack_target.rs | 9 +++++++-- src/ln/channelmonitor.rs | 16 +++++++++++++--- src/ln/functional_tests.rs | 2 ++ 3 files changed, 22 insertions(+), 5 deletions(-) diff --git a/fuzz/fuzz_targets/full_stack_target.rs b/fuzz/fuzz_targets/full_stack_target.rs index 8737f6c2..f2b24a1a 100644 --- a/fuzz/fuzz_targets/full_stack_target.rs +++ b/fuzz/fuzz_targets/full_stack_target.rs @@ -881,13 +881,18 @@ mod tests { // 02000000013f00000000000000000000000000000000000000000000000000000000000000000000000000000080020001000000000000220020e2000000000000000000000000000000000000000000000000000000000000006cc10000000000001600142e0000000000000000000000000000000000000005000020 - the commitment transaction for channel 3f00000000000000000000000000000000000000000000000000000000000000 // 00fd - A feerate request (returning min feerate, which our open_channel also uses) (gonna be ingested by FuzzEstimator) // 0c005e - connect a block with one transaction of len 94 - // 0200000001fb00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the commitment transaction for channel 3d00000000000000000000000000000000000000000000000000000000000000 + // 0200000001fb00000000000000000000000000000000000000000000000000000000000000000000000000000000014f00000000000000220020f60000000000000000000000000000000000000000000000000000000000000000000000 - the funding transaction + // 0c0000 - connect a block with no transactions + // 0c0000 - connect a block with no transactions + // 0c0000 - connect a block with no transactions + // 0c0000 - connect a block with no transactions + // 0c0000 - connect a block with no transactions // // 07 - process the now-pending HTLC forward // - client now fails the HTLC backwards as it was unable to extract the payment preimage (CHECK 9 duplicate and CHECK 10) let logger = Arc::new(TrackingLogger { lines: Mutex::new(HashMap::new()) }); - 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&(Arc::clone(&logger) as Arc)); + 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&(Arc::clone(&logger) as Arc)); let log_entries = logger.lines.lock().unwrap(); assert_eq!(log_entries.get(&("lightning::ln::peer_handler".to_string(), "Handling SendAcceptChannel event in peer_handler for node 030000000000000000000000000000000000000000000000000000000000000000 for channel ff4f00f805273c1b203bb5ebf8436bfde57b3be8c2f5e95d9491dbb181909679".to_string())), Some(&1)); // 1 diff --git a/src/ln/channelmonitor.rs b/src/ln/channelmonitor.rs index 379ae31c..59dffa6e 100644 --- a/src/ln/channelmonitor.rs +++ b/src/ln/channelmonitor.rs @@ -1876,7 +1876,7 @@ impl ChannelMonitor { // While all commitment/HTLC-Success/HTLC-Timeout transactions have one input, HTLCs // can also be resolved in a few other ways which can have more than one output. Thus, // we call is_resolving_htlc_output here outside of the tx.input.len() == 1 check. - let mut updated = self.is_resolving_htlc_output(tx); + let mut updated = self.is_resolving_htlc_output(tx, height); if updated.len() > 0 { htlc_updated.append(&mut updated); } @@ -1994,7 +1994,7 @@ impl ChannelMonitor { /// Check if any transaction broadcasted is resolving HTLC output by a success or timeout on a local /// or remote commitment tx, if so send back the source, preimage if found and payment_hash of resolved HTLC - fn is_resolving_htlc_output(&mut self, tx: &Transaction) -> Vec<(HTLCSource, Option, PaymentHash)> { + fn is_resolving_htlc_output(&mut self, tx: &Transaction, height: u32) -> Vec<(HTLCSource, Option, PaymentHash)> { let mut htlc_updated = Vec::new(); 'outer_loop: for input in &tx.input { @@ -2101,7 +2101,17 @@ impl ChannelMonitor { payment_preimage.0.copy_from_slice(&input.witness[1]); htlc_updated.push((source, Some(payment_preimage), payment_hash)); } else { - htlc_updated.push((source, None, payment_hash)); + log_info!(self, "Failing HTLC with payment_hash {} timeout by a spend tx, waiting for confirmation (at height{})", log_bytes!(payment_hash.0), height + HTLC_FAIL_ANTI_REORG_DELAY - 1); + match self.htlc_updated_waiting_threshold_conf.entry(height + HTLC_FAIL_ANTI_REORG_DELAY - 1) { + hash_map::Entry::Occupied(mut entry) => { + let e = entry.get_mut(); + e.retain(|ref update| update.0 != source); + e.push((source, None, payment_hash.clone())); + } + hash_map::Entry::Vacant(entry) => { + entry.insert(vec![(source, None, payment_hash)]); + } + } } } } diff --git a/src/ln/functional_tests.rs b/src/ln/functional_tests.rs index ec3304b3..4b58e3b2 100644 --- a/src/ln/functional_tests.rs +++ b/src/ln/functional_tests.rs @@ -2241,6 +2241,7 @@ fn test_htlc_on_chain_timeout() { } nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![timeout_tx]}, 1); + connect_blocks(&nodes[1].chain_monitor, HTLC_FAIL_ANTI_REORG_DELAY - 1, 1, true, header.bitcoin_hash()); check_added_monitors!(nodes[1], 0); check_closed_broadcast!(nodes[1]); @@ -3898,6 +3899,7 @@ fn test_duplicate_payment_hash_one_failure_one_success() { check_spends!(htlc_success_txn[1], commitment_txn[0].clone()); nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![htlc_timeout_tx] }, 200); + connect_blocks(&nodes[1].chain_monitor, HTLC_FAIL_ANTI_REORG_DELAY - 1, 200, true, header.bitcoin_hash()); expect_pending_htlcs_forwardable!(nodes[1]); let htlc_updates = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); assert!(htlc_updates.update_add_htlcs.is_empty()); -- 2.30.2