From 5712de2da0d4591b96b2e5b5d1e7bd68c30c6ad5 Mon Sep 17 00:00:00 2001 From: Matt Corallo Date: Mon, 26 Jul 2021 18:59:03 +0000 Subject: [PATCH] Move shutdown-related tests into a new module Because ln::functional_tests if over 9000 LoC long, its useful to move tests into new modules as we can. Here we move all cooperative shutdown related tests into a new module entitled `shutdown_tests` --- lightning/src/ln/functional_tests.rs | 693 ------------------------- lightning/src/ln/mod.rs | 3 + lightning/src/ln/shutdown_tests.rs | 728 +++++++++++++++++++++++++++ 3 files changed, 731 insertions(+), 693 deletions(-) create mode 100644 lightning/src/ln/shutdown_tests.rs diff --git a/lightning/src/ln/functional_tests.rs b/lightning/src/ln/functional_tests.rs index 59ccfbe96..980c6ea40 100644 --- a/lightning/src/ln/functional_tests.rs +++ b/lightning/src/ln/functional_tests.rs @@ -28,10 +28,8 @@ use routing::network_graph::RoutingFees; use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures}; use ln::msgs; use ln::msgs::{ChannelMessageHandler,RoutingMessageHandler,HTLCFailChannelUpdate, ErrorAction}; -use ln::script::ShutdownScript; use util::enforcing_trait_impls::EnforcingSigner; use util::{byte_utils, test_utils}; -use util::test_utils::OnGetShutdownScriptpubkey; use util::events::{Event, MessageSendEvent, MessageSendEventsProvider, PaymentPurpose}; use util::errors::APIError; use util::ser::{Writeable, ReadableArgs}; @@ -57,12 +55,10 @@ use io; use prelude::*; use alloc::collections::BTreeSet; use core::default::Default; -use core::num::NonZeroU8; use sync::{Arc, Mutex}; use ln::functional_test_utils::*; use ln::chan_utils::CommitmentTransaction; -use ln::msgs::OptionalField::Present; #[test] fn test_insane_channel_opens() { @@ -857,378 +853,6 @@ fn test_update_fee() { close_channel(&nodes[0], &nodes[1], &chan.2, chan.3, true); } -#[test] -fn pre_funding_lock_shutdown_test() { - // Test sending a shutdown prior to funding_locked after funding generation - let chanmon_cfgs = create_chanmon_cfgs(2); - let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known()); - mine_transaction(&nodes[0], &tx); - mine_transaction(&nodes[1], &tx); - - nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); - let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); - let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); - let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - assert!(node_1_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - assert!(nodes[1].node.list_channels().is_empty()); -} - -#[test] -fn updates_shutdown_wait() { - // Test sending a shutdown with outstanding updates pending - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); - let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); - let logger = test_utils::TestLogger::new(); - - let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); - - nodes[0].node.close_channel(&chan_1.2).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); - - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]); - - let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler; - let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler; - let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); - let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); - unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); - unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); - - assert!(nodes[2].node.claim_funds(our_payment_preimage)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]); - expect_payment_forwarded!(nodes[1], Some(1000), false); - check_added_monitors!(nodes[1], 1); - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); - - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fail_htlcs.is_empty()); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(our_payment_preimage, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); - let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); - let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); - let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - assert!(node_1_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); -} - -#[test] -fn htlc_fail_async_shutdown() { - // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); - let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); - let logger = test_utils::TestLogger::new(); - - let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]); - let net_graph_msg_handler = &nodes[0].net_graph_msg_handler; - let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); - nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap(); - check_added_monitors!(nodes[0], 1); - let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); - assert_eq!(updates.update_add_htlcs.len(), 1); - assert!(updates.update_fulfill_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - - nodes[1].node.close_channel(&chan_1.2).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - - nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]); - nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed); - check_added_monitors!(nodes[1], 1); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false); - - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fulfill_htlcs.is_empty()); - assert_eq!(updates_2.update_fail_htlcs.len(), 1); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - - nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - expect_payment_failed!(nodes[0], our_payment_hash, false); - - let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(msg_events.len(), 2); - match msg_events[0] { - MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { - assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id); - }, - _ => panic!("Unexpected event"), - } - let node_0_closing_signed = match msg_events[1] { - MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { - assert_eq!(*node_id, nodes[1].node.get_our_node_id()); - (*msg).clone() - }, - _ => panic!("Unexpected event"), - }; - - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); - let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); - let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); - let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - assert!(node_1_none.is_none()); - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); -} - -fn do_test_shutdown_rebroadcast(recv_count: u8) { - // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of - // messages delivered prior to disconnect - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); - - let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); - - nodes[1].node.close_channel(&chan_1.2).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - if recv_count > 0 { - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - if recv_count > 1 { - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - } - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); - let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); - let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish); - let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - assert!(node_1_shutdown == node_1_2nd_shutdown); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish); - let node_0_2nd_shutdown = if recv_count > 0 { - let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown); - node_0_2nd_shutdown - } else { - let node_0_chan_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id()); - assert_eq!(node_0_chan_update.contents.flags & 2, 0); // "disabled" flag must not be set as we just reconnected. - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown); - get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()) - }; - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_2nd_shutdown); - - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - assert!(nodes[2].node.claim_funds(our_payment_preimage)); - check_added_monitors!(nodes[2], 1); - let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); - assert!(updates.update_add_htlcs.is_empty()); - assert!(updates.update_fail_htlcs.is_empty()); - assert!(updates.update_fail_malformed_htlcs.is_empty()); - assert!(updates.update_fee.is_none()); - assert_eq!(updates.update_fulfill_htlcs.len(), 1); - nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]); - expect_payment_forwarded!(nodes[1], Some(1000), false); - check_added_monitors!(nodes[1], 1); - let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); - commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); - - assert!(updates_2.update_add_htlcs.is_empty()); - assert!(updates_2.update_fail_htlcs.is_empty()); - assert!(updates_2.update_fail_malformed_htlcs.is_empty()); - assert!(updates_2.update_fee.is_none()); - assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); - nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]); - commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); - - let events = nodes[0].node.get_and_clear_pending_events(); - assert_eq!(events.len(), 1); - match events[0] { - Event::PaymentSent { ref payment_preimage } => { - assert_eq!(our_payment_preimage, *payment_preimage); - }, - _ => panic!("Unexpected event"), - } - - let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); - if recv_count > 0 { - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); - let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); - let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - assert!(node_0_2nd_closing_signed.is_some()); - } - - nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); - nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); - - nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); - let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); - nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); - if recv_count == 0 { - // If all closing_signeds weren't delivered we can just resume where we left off... - let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish); - let node_0_msgs = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(node_0_msgs.len(), 2); - let node_0_2nd_closing_signed = match node_0_msgs[1] { - MessageSendEvent::SendClosingSigned { ref msg, .. } => { - assert_eq!(node_0_closing_signed, *msg); - msg.clone() - }, - _ => panic!(), - }; - - let node_0_3rd_shutdown = match node_0_msgs[0] { - MessageSendEvent::SendShutdown { ref msg, .. } => { - assert_eq!(node_0_2nd_shutdown, *msg); - msg.clone() - }, - _ => panic!(), - }; - assert!(node_0_2nd_shutdown == node_0_3rd_shutdown); - - nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish); - let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - assert!(node_1_3rd_shutdown == node_1_2nd_shutdown); - - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_3rd_shutdown); - assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_3rd_shutdown); - - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed); - let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); - let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); - let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); - assert!(node_1_none.is_none()); - } else { - // If one node, however, received + responded with an identical closing_signed we end - // up erroring and node[0] will try to broadcast its own latest commitment transaction. - // There isn't really anything better we can do simply, but in the future we might - // explore storing a set of recently-closed channels that got disconnected during - // closing_signed and avoiding broadcasting local commitment txn for some timeout to - // give our counterparty enough time to (potentially) broadcast a cooperative closing - // transaction. - assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); - - nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish); - let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(msg_events.len(), 1); - if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] { - match action { - &ErrorAction::SendErrorMessage { ref msg } => { - nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), &msg); - assert_eq!(msg.channel_id, chan_1.2); - }, - _ => panic!("Unexpected event!"), - } - } else { panic!("Needed SendErrorMessage close"); } - - // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and - // checks it, but in this case nodes[1] didn't ever get a chance to receive a - // closing_signed so we do it ourselves - check_closed_broadcast!(nodes[1], false); - check_added_monitors!(nodes[1], 1); - } - - assert!(nodes[0].node.list_channels().is_empty()); - - assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); - nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); - close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); - assert!(nodes[1].node.list_channels().is_empty()); - assert!(nodes[2].node.list_channels().is_empty()); -} - -#[test] -fn test_shutdown_rebroadcast() { - do_test_shutdown_rebroadcast(0); - do_test_shutdown_rebroadcast(1); - do_test_shutdown_rebroadcast(2); -} - #[test] fn fake_network_test() { // Simple test which builds a network of ChannelManagers, connects them to each other, and @@ -7508,323 +7132,6 @@ fn test_sweep_outbound_htlc_failure_update() { do_test_sweep_outbound_htlc_failure_update(true, false); } -#[test] -fn test_upfront_shutdown_script() { - // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening - // enforce it at shutdown message - - let mut config = UserConfig::default(); - config.channel_options.announced_channel = true; - config.peer_channel_config_limits.force_announced_channel_preference = false; - config.channel_options.commit_upfront_shutdown_pubkey = false; - let user_cfgs = [None, Some(config), None]; - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - - // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign - let flags = InitFeatures::known(); - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone()); - nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id()); - node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh(); - // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer - nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.").unwrap().is_match(check_closed_broadcast!(nodes[2], true).unwrap().data.as_str())); - check_added_monitors!(nodes[2], 1); - - // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone()); - nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id()); - // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign - nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - let events = nodes[2].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - - // We test that if case of peer non-signaling we don't enforce committed script at channel opening - let flags_no = InitFeatures::known().clear_upfront_shutdown_script(); - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone()); - nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - let node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); - check_added_monitors!(nodes[1], 1); - let events = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - - // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close - // channel smoothly, opt-out is from channel initiator here - let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone()); - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - - //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close - //// channel smoothly - let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone()); - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } -} - -#[test] -fn test_unsupported_anysegwit_upfront_shutdown_script() { - let chanmon_cfgs = create_chanmon_cfgs(2); - let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - - // Use a non-v0 segwit script supported by option_shutdown_anysegwit - let node_features = InitFeatures::known().clear_shutdown_anysegwit(); - let anysegwit_shutdown_script = Builder::new() - .push_int(16) - .push_slice(&[0, 40]) - .into_script(); - - // Check script when handling an open_channel message - nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); - let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); - open_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone()); - nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), node_features.clone(), &open_channel); - - let events = nodes[1].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { - assert_eq!(node_id, nodes[0].node.get_our_node_id()); - assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)"); - }, - _ => panic!("Unexpected event"), - } - - // Check script when handling an accept_channel message - nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); - let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); - nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel); - let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()); - accept_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone()); - nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), node_features, &accept_channel); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { - assert_eq!(node_id, nodes[1].node.get_our_node_id()); - assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)"); - }, - _ => panic!("Unexpected event"), - } -} - -#[test] -fn test_invalid_upfront_shutdown_script() { - let chanmon_cfgs = create_chanmon_cfgs(2); - let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); - let nodes = create_network(2, &node_cfgs, &node_chanmgrs); - - nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); - - // Use a segwit v0 script with an unsupported witness program - let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); - open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(0) - .push_slice(&[0, 0]) - .into_script()); - nodes[0].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 1); - match events[0] { - MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { - assert_eq!(node_id, nodes[0].node.get_our_node_id()); - assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_0 OP_PUSHBYTES_2 0000)"); - }, - _ => panic!("Unexpected event"), - } -} - -#[test] -fn test_segwit_v0_shutdown_script() { - let mut config = UserConfig::default(); - config.channel_options.announced_channel = true; - config.peer_channel_config_limits.force_announced_channel_preference = false; - config.channel_options.commit_upfront_shutdown_pubkey = false; - let user_cfgs = [None, Some(config), None]; - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - - let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - - // Use a segwit v0 script supported even without option_shutdown_anysegwit - let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - node_0_shutdown.scriptpubkey = Builder::new().push_int(0) - .push_slice(&[0; 20]) - .into_script(); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } -} - -#[test] -fn test_anysegwit_shutdown_script() { - let mut config = UserConfig::default(); - config.channel_options.announced_channel = true; - config.peer_channel_config_limits.force_announced_channel_preference = false; - config.channel_options.commit_upfront_shutdown_pubkey = false; - let user_cfgs = [None, Some(config), None]; - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - - let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - - // Use a non-v0 segwit script supported by option_shutdown_anysegwit - let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - node_0_shutdown.scriptpubkey = Builder::new().push_int(16) - .push_slice(&[0, 0]) - .into_script(); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - match events[0] { - MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } - match events[1] { - MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } - _ => panic!("Unexpected event"), - } -} - -#[test] -fn test_unsupported_anysegwit_shutdown_script() { - let mut config = UserConfig::default(); - config.channel_options.announced_channel = true; - config.peer_channel_config_limits.force_announced_channel_preference = false; - config.channel_options.commit_upfront_shutdown_pubkey = false; - let user_cfgs = [None, Some(config), None]; - let chanmon_cfgs = create_chanmon_cfgs(3); - let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - node_cfgs[0].features = InitFeatures::known().clear_shutdown_anysegwit(); - node_cfgs[1].features = InitFeatures::known().clear_shutdown_anysegwit(); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - - // Check that using an unsupported shutdown script fails and a supported one succeeds. - let supported_shutdown_script = chanmon_cfgs[1].keys_manager.get_shutdown_scriptpubkey(); - let unsupported_shutdown_script = - ShutdownScript::new_witness_program(NonZeroU8::new(16).unwrap(), &[0, 40]).unwrap(); - chanmon_cfgs[1].keys_manager - .expect(OnGetShutdownScriptpubkey { returns: unsupported_shutdown_script.clone() }) - .expect(OnGetShutdownScriptpubkey { returns: supported_shutdown_script }); - - let chan = create_announced_chan_between_nodes(&nodes, 0, 1, node_cfgs[0].features.clone(), node_cfgs[1].features.clone()); - match nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()) { - Err(APIError::IncompatibleShutdownScript { script }) => { - assert_eq!(script.into_inner(), unsupported_shutdown_script.clone().into_inner()); - }, - Err(e) => panic!("Unexpected error: {:?}", e), - Ok(_) => panic!("Expected error"), - } - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - - // Use a non-v0 segwit script unsupported without option_shutdown_anysegwit - let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - node_0_shutdown.scriptpubkey = unsupported_shutdown_script.into_inner(); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_cfgs[1].features, &node_0_shutdown); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - match events[1] { - MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { - assert_eq!(node_id, nodes[1].node.get_our_node_id()); - assert_eq!(msg.data, "Got a nonstandard scriptpubkey (60020028) from remote peer".to_owned()); - }, - _ => panic!("Unexpected event"), - } - check_added_monitors!(nodes[0], 1); -} - -#[test] -fn test_invalid_shutdown_script() { - let mut config = UserConfig::default(); - config.channel_options.announced_channel = true; - config.peer_channel_config_limits.force_announced_channel_preference = false; - config.channel_options.commit_upfront_shutdown_pubkey = false; - let user_cfgs = [None, Some(config), None]; - let chanmon_cfgs = create_chanmon_cfgs(3); - let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); - let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); - let nodes = create_network(3, &node_cfgs, &node_chanmgrs); - - let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); - nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); - check_added_monitors!(nodes[1], 1); - - // Use a segwit v0 script with an unsupported witness program - let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); - node_0_shutdown.scriptpubkey = Builder::new().push_int(0) - .push_slice(&[0, 0]) - .into_script(); - nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); - - let events = nodes[0].node.get_and_clear_pending_msg_events(); - assert_eq!(events.len(), 2); - match events[1] { - MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { - assert_eq!(node_id, nodes[1].node.get_our_node_id()); - assert_eq!(msg.data, "Got a nonstandard scriptpubkey (00020000) from remote peer".to_owned()) - }, - _ => panic!("Unexpected event"), - } - check_added_monitors!(nodes[0], 1); -} - #[test] fn test_user_configurable_csv_delay() { // We test our channel constructors yield errors when we pass them absurd csv delay diff --git a/lightning/src/ln/mod.rs b/lightning/src/ln/mod.rs index 758927fdf..d265888e4 100644 --- a/lightning/src/ln/mod.rs +++ b/lightning/src/ln/mod.rs @@ -61,6 +61,9 @@ mod onion_route_tests; #[cfg(test)] #[allow(unused_mut)] mod monitor_tests; +#[cfg(test)] +#[allow(unused_mut)] +mod shutdown_tests; pub use self::peer_channel_encryptor::LN_MAX_MSG_LEN; diff --git a/lightning/src/ln/shutdown_tests.rs b/lightning/src/ln/shutdown_tests.rs new file mode 100644 index 000000000..a4dd3a078 --- /dev/null +++ b/lightning/src/ln/shutdown_tests.rs @@ -0,0 +1,728 @@ +// This file is Copyright its original authors, visible in version control +// history. +// +// This file is licensed under the Apache License, Version 2.0 or the MIT license +// , at your option. +// You may not use this file except in accordance with one or both of these +// licenses. + +//! Tests of our shutdown and closing_signed negotiation logic. + +use chain::keysinterface::KeysInterface; +use chain::transaction::OutPoint; +use ln::{PaymentPreimage, PaymentHash}; +use ln::channelmanager::PaymentSendFailure; +use routing::router::get_route; +use ln::features::{InitFeatures, InvoiceFeatures}; +use ln::msgs; +use ln::msgs::{ChannelMessageHandler, ErrorAction}; +use ln::script::ShutdownScript; +use util::test_utils; +use util::test_utils::OnGetShutdownScriptpubkey; +use util::events::{Event, MessageSendEvent, MessageSendEventsProvider}; +use util::errors::APIError; +use util::config::UserConfig; + +use bitcoin::blockdata::script::Builder; +use bitcoin::blockdata::opcodes; + +use bitcoin::hashes::sha256::Hash as Sha256; +use bitcoin::hashes::Hash; + +use regex; + +use core::default::Default; +use core::num::NonZeroU8; + +use ln::functional_test_utils::*; +use ln::msgs::OptionalField::Present; + +#[test] +fn pre_funding_lock_shutdown_test() { + // Test sending a shutdown prior to funding_locked after funding generation + let chanmon_cfgs = create_chanmon_cfgs(2); + let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); + let nodes = create_network(2, &node_cfgs, &node_chanmgrs); + let tx = create_chan_between_nodes_with_value_init(&nodes[0], &nodes[1], 8000000, 0, InitFeatures::known(), InitFeatures::known()); + mine_transaction(&nodes[0], &tx); + mine_transaction(&nodes[1], &tx); + + nodes[0].node.close_channel(&OutPoint { txid: tx.txid(), index: 0 }.to_channel_id()).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); + let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); + let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); + let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + assert!(node_1_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + assert!(nodes[1].node.list_channels().is_empty()); +} + +#[test] +fn updates_shutdown_wait() { + // Test sending a shutdown with outstanding updates pending + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); + let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); + let logger = test_utils::TestLogger::new(); + + let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); + + nodes[0].node.close_channel(&chan_1.2).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); + + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]); + + let net_graph_msg_handler0 = &nodes[0].net_graph_msg_handler; + let net_graph_msg_handler1 = &nodes[1].net_graph_msg_handler; + let route_1 = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler0.network_graph.read().unwrap(), &nodes[1].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); + let route_2 = get_route(&nodes[1].node.get_our_node_id(), &net_graph_msg_handler1.network_graph.read().unwrap(), &nodes[0].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); + unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); + unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); + + assert!(nodes[2].node.claim_funds(our_payment_preimage)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]); + expect_payment_forwarded!(nodes[1], Some(1000), false); + check_added_monitors!(nodes[1], 1); + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); + + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fail_htlcs.is_empty()); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(our_payment_preimage, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); + let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); + let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); + let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + assert!(node_1_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +#[test] +fn htlc_fail_async_shutdown() { + // Test HTLCs fail if shutdown starts even if messages are delivered out-of-order + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); + let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); + let logger = test_utils::TestLogger::new(); + + let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(nodes[2]); + let net_graph_msg_handler = &nodes[0].net_graph_msg_handler; + let route = get_route(&nodes[0].node.get_our_node_id(), &net_graph_msg_handler.network_graph.read().unwrap(), &nodes[2].node.get_our_node_id(), Some(InvoiceFeatures::known()), None, &[], 100000, TEST_FINAL_CLTV, &logger).unwrap(); + nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap(); + check_added_monitors!(nodes[0], 1); + let updates = get_htlc_update_msgs!(nodes[0], nodes[1].node.get_our_node_id()); + assert_eq!(updates.update_add_htlcs.len(), 1); + assert!(updates.update_fulfill_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + + nodes[1].node.close_channel(&chan_1.2).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + + nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &updates.update_add_htlcs[0]); + nodes[1].node.handle_commitment_signed(&nodes[0].node.get_our_node_id(), &updates.commitment_signed); + check_added_monitors!(nodes[1], 1); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + commitment_signed_dance!(nodes[1], nodes[0], (), false, true, false); + + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fulfill_htlcs.is_empty()); + assert_eq!(updates_2.update_fail_htlcs.len(), 1); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + + nodes[0].node.handle_update_fail_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fail_htlcs[0]); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + expect_payment_failed!(nodes[0], our_payment_hash, false); + + let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(msg_events.len(), 2); + match msg_events[0] { + MessageSendEvent::PaymentFailureNetworkUpdate { update: msgs::HTLCFailChannelUpdate::ChannelUpdateMessage { ref msg }} => { + assert_eq!(msg.contents.short_channel_id, chan_1.0.contents.short_channel_id); + }, + _ => panic!("Unexpected event"), + } + let node_0_closing_signed = match msg_events[1] { + MessageSendEvent::SendClosingSigned { ref node_id, ref msg } => { + assert_eq!(*node_id, nodes[1].node.get_our_node_id()); + (*msg).clone() + }, + _ => panic!("Unexpected event"), + }; + + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); + let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); + let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); + let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + assert!(node_1_none.is_none()); + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +fn do_test_shutdown_rebroadcast(recv_count: u8) { + // Test that shutdown/closing_signed is re-sent on reconnect with a variable number of + // messages delivered prior to disconnect + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, None, None]); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + let chan_1 = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); + + let (our_payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); + + nodes[1].node.close_channel(&chan_1.2).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + if recv_count > 0 { + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + if recv_count > 1 { + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + } + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); + let node_0_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); + let node_1_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_reestablish); + let node_1_2nd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + assert!(node_1_shutdown == node_1_2nd_shutdown); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_reestablish); + let node_0_2nd_shutdown = if recv_count > 0 { + let node_0_2nd_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown); + node_0_2nd_shutdown + } else { + let node_0_chan_update = get_event_msg!(nodes[0], MessageSendEvent::SendChannelUpdate, nodes[1].node.get_our_node_id()); + assert_eq!(node_0_chan_update.contents.flags & 2, 0); // "disabled" flag must not be set as we just reconnected. + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_2nd_shutdown); + get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()) + }; + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_2nd_shutdown); + + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + assert!(nodes[2].node.claim_funds(our_payment_preimage)); + check_added_monitors!(nodes[2], 1); + let updates = get_htlc_update_msgs!(nodes[2], nodes[1].node.get_our_node_id()); + assert!(updates.update_add_htlcs.is_empty()); + assert!(updates.update_fail_htlcs.is_empty()); + assert!(updates.update_fail_malformed_htlcs.is_empty()); + assert!(updates.update_fee.is_none()); + assert_eq!(updates.update_fulfill_htlcs.len(), 1); + nodes[1].node.handle_update_fulfill_htlc(&nodes[2].node.get_our_node_id(), &updates.update_fulfill_htlcs[0]); + expect_payment_forwarded!(nodes[1], Some(1000), false); + check_added_monitors!(nodes[1], 1); + let updates_2 = get_htlc_update_msgs!(nodes[1], nodes[0].node.get_our_node_id()); + commitment_signed_dance!(nodes[1], nodes[2], updates.commitment_signed, false); + + assert!(updates_2.update_add_htlcs.is_empty()); + assert!(updates_2.update_fail_htlcs.is_empty()); + assert!(updates_2.update_fail_malformed_htlcs.is_empty()); + assert!(updates_2.update_fee.is_none()); + assert_eq!(updates_2.update_fulfill_htlcs.len(), 1); + nodes[0].node.handle_update_fulfill_htlc(&nodes[1].node.get_our_node_id(), &updates_2.update_fulfill_htlcs[0]); + commitment_signed_dance!(nodes[0], nodes[1], updates_2.commitment_signed, false, true); + + let events = nodes[0].node.get_and_clear_pending_events(); + assert_eq!(events.len(), 1); + match events[0] { + Event::PaymentSent { ref payment_preimage } => { + assert_eq!(our_payment_preimage, *payment_preimage); + }, + _ => panic!("Unexpected event"), + } + + let node_0_closing_signed = get_event_msg!(nodes[0], MessageSendEvent::SendClosingSigned, nodes[1].node.get_our_node_id()); + if recv_count > 0 { + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_closing_signed); + let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); + let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + assert!(node_0_2nd_closing_signed.is_some()); + } + + nodes[0].node.peer_disconnected(&nodes[1].node.get_our_node_id(), false); + nodes[1].node.peer_disconnected(&nodes[0].node.get_our_node_id(), false); + + nodes[1].node.peer_connected(&nodes[0].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); + let node_1_2nd_reestablish = get_event_msg!(nodes[1], MessageSendEvent::SendChannelReestablish, nodes[0].node.get_our_node_id()); + nodes[0].node.peer_connected(&nodes[1].node.get_our_node_id(), &msgs::Init { features: InitFeatures::empty() }); + if recv_count == 0 { + // If all closing_signeds weren't delivered we can just resume where we left off... + let node_0_2nd_reestablish = get_event_msg!(nodes[0], MessageSendEvent::SendChannelReestablish, nodes[1].node.get_our_node_id()); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish); + let node_0_msgs = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(node_0_msgs.len(), 2); + let node_0_2nd_closing_signed = match node_0_msgs[1] { + MessageSendEvent::SendClosingSigned { ref msg, .. } => { + assert_eq!(node_0_closing_signed, *msg); + msg.clone() + }, + _ => panic!(), + }; + + let node_0_3rd_shutdown = match node_0_msgs[0] { + MessageSendEvent::SendShutdown { ref msg, .. } => { + assert_eq!(node_0_2nd_shutdown, *msg); + msg.clone() + }, + _ => panic!(), + }; + assert!(node_0_2nd_shutdown == node_0_3rd_shutdown); + + nodes[1].node.handle_channel_reestablish(&nodes[0].node.get_our_node_id(), &node_0_2nd_reestablish); + let node_1_3rd_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + assert!(node_1_3rd_shutdown == node_1_2nd_shutdown); + + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_3rd_shutdown); + assert!(nodes[1].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_1_3rd_shutdown); + + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed); + let node_1_closing_signed = get_event_msg!(nodes[1], MessageSendEvent::SendClosingSigned, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_closing_signed(&nodes[1].node.get_our_node_id(), &node_1_closing_signed); + let (_, node_0_2nd_closing_signed) = get_closing_signed_broadcast!(nodes[0].node, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_closing_signed(&nodes[0].node.get_our_node_id(), &node_0_2nd_closing_signed.unwrap()); + let (_, node_1_none) = get_closing_signed_broadcast!(nodes[1].node, nodes[0].node.get_our_node_id()); + assert!(node_1_none.is_none()); + } else { + // If one node, however, received + responded with an identical closing_signed we end + // up erroring and node[0] will try to broadcast its own latest commitment transaction. + // There isn't really anything better we can do simply, but in the future we might + // explore storing a set of recently-closed channels that got disconnected during + // closing_signed and avoiding broadcasting local commitment txn for some timeout to + // give our counterparty enough time to (potentially) broadcast a cooperative closing + // transaction. + assert!(nodes[0].node.get_and_clear_pending_msg_events().is_empty()); + + nodes[0].node.handle_channel_reestablish(&nodes[1].node.get_our_node_id(), &node_1_2nd_reestablish); + let msg_events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(msg_events.len(), 1); + if let MessageSendEvent::HandleError { ref action, .. } = msg_events[0] { + match action { + &ErrorAction::SendErrorMessage { ref msg } => { + nodes[1].node.handle_error(&nodes[0].node.get_our_node_id(), &msg); + assert_eq!(msg.channel_id, chan_1.2); + }, + _ => panic!("Unexpected event!"), + } + } else { panic!("Needed SendErrorMessage close"); } + + // get_closing_signed_broadcast usually eats the BroadcastChannelUpdate for us and + // checks it, but in this case nodes[1] didn't ever get a chance to receive a + // closing_signed so we do it ourselves + check_closed_broadcast!(nodes[1], false); + check_added_monitors!(nodes[1], 1); + } + + assert!(nodes[0].node.list_channels().is_empty()); + + assert_eq!(nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 1); + nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap().clear(); + close_channel(&nodes[1], &nodes[2], &chan_2.2, chan_2.3, true); + assert!(nodes[1].node.list_channels().is_empty()); + assert!(nodes[2].node.list_channels().is_empty()); +} + +#[test] +fn test_shutdown_rebroadcast() { + do_test_shutdown_rebroadcast(0); + do_test_shutdown_rebroadcast(1); + do_test_shutdown_rebroadcast(2); +} + +#[test] +fn test_upfront_shutdown_script() { + // BOLT 2 : Option upfront shutdown script, if peer commit its closing_script at channel opening + // enforce it at shutdown message + + let mut config = UserConfig::default(); + config.channel_options.announced_channel = true; + config.peer_channel_config_limits.force_announced_channel_preference = false; + config.channel_options.commit_upfront_shutdown_pubkey = false; + let user_cfgs = [None, Some(config), None]; + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + + // We test that in case of peer committing upfront to a script, if it changes at closing, we refuse to sign + let flags = InitFeatures::known(); + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone()); + nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + let mut node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id()); + node_0_shutdown.scriptpubkey = Builder::new().push_opcode(opcodes::all::OP_RETURN).into_script().to_p2sh(); + // Test we enforce upfront_scriptpbukey if by providing a diffrent one at closing that we disconnect peer + nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + assert!(regex::Regex::new(r"Got shutdown request with a scriptpubkey \([A-Fa-f0-9]+\) which did not match their previous scriptpubkey.").unwrap().is_match(check_closed_broadcast!(nodes[2], true).unwrap().data.as_str())); + check_added_monitors!(nodes[2], 1); + + // We test that in case of peer committing upfront to a script, if it doesn't change at closing, we sign + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1000000, 1000000, flags.clone(), flags.clone()); + nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + let node_0_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[2].node.get_our_node_id()); + // We test that in case of peer committing upfront to a script, if it oesn't change at closing, we sign + nodes[2].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + let events = nodes[2].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + + // We test that if case of peer non-signaling we don't enforce committed script at channel opening + let flags_no = InitFeatures::known().clear_upfront_shutdown_script(); + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags_no, flags.clone()); + nodes[0].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + let node_1_shutdown = get_event_msg!(nodes[0], MessageSendEvent::SendShutdown, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_shutdown(&nodes[0].node.get_our_node_id(), &InitFeatures::known(), &node_1_shutdown); + check_added_monitors!(nodes[1], 1); + let events = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[0].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + + // We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close + // channel smoothly, opt-out is from channel initiator here + let chan = create_announced_chan_between_nodes_with_value(&nodes, 1, 0, 1000000, 1000000, flags.clone(), flags.clone()); + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + + //// We test that if user opt-out, we provide a zero-length script at channel opening and we are able to close + //// channel smoothly + let chan = create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1000000, 1000000, flags.clone(), flags.clone()); + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + let node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_unsupported_anysegwit_upfront_shutdown_script() { + let chanmon_cfgs = create_chanmon_cfgs(2); + let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); + let nodes = create_network(2, &node_cfgs, &node_chanmgrs); + + // Use a non-v0 segwit script supported by option_shutdown_anysegwit + let node_features = InitFeatures::known().clear_shutdown_anysegwit(); + let anysegwit_shutdown_script = Builder::new() + .push_int(16) + .push_slice(&[0, 40]) + .into_script(); + + // Check script when handling an open_channel message + nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); + let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); + open_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone()); + nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), node_features.clone(), &open_channel); + + let events = nodes[1].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { + assert_eq!(node_id, nodes[0].node.get_our_node_id()); + assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)"); + }, + _ => panic!("Unexpected event"), + } + + // Check script when handling an accept_channel message + nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); + let open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); + nodes[1].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel); + let mut accept_channel = get_event_msg!(nodes[1], MessageSendEvent::SendAcceptChannel, nodes[0].node.get_our_node_id()); + accept_channel.shutdown_scriptpubkey = Present(anysegwit_shutdown_script.clone()); + nodes[0].node.handle_accept_channel(&nodes[1].node.get_our_node_id(), node_features, &accept_channel); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { + assert_eq!(node_id, nodes[1].node.get_our_node_id()); + assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_PUSHNUM_16 OP_PUSHBYTES_2 0028)"); + }, + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_invalid_upfront_shutdown_script() { + let chanmon_cfgs = create_chanmon_cfgs(2); + let node_cfgs = create_node_cfgs(2, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]); + let nodes = create_network(2, &node_cfgs, &node_chanmgrs); + + nodes[0].node.create_channel(nodes[1].node.get_our_node_id(), 100000, 10001, 42, None).unwrap(); + + // Use a segwit v0 script with an unsupported witness program + let mut open_channel = get_event_msg!(nodes[0], MessageSendEvent::SendOpenChannel, nodes[1].node.get_our_node_id()); + open_channel.shutdown_scriptpubkey = Present(Builder::new().push_int(0) + .push_slice(&[0, 0]) + .into_script()); + nodes[0].node.handle_open_channel(&nodes[0].node.get_our_node_id(), InitFeatures::known(), &open_channel); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 1); + match events[0] { + MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { + assert_eq!(node_id, nodes[0].node.get_our_node_id()); + assert_eq!(msg.data, "Peer is signaling upfront_shutdown but has provided an unacceptable scriptpubkey format: Script(OP_0 OP_PUSHBYTES_2 0000)"); + }, + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_segwit_v0_shutdown_script() { + let mut config = UserConfig::default(); + config.channel_options.announced_channel = true; + config.peer_channel_config_limits.force_announced_channel_preference = false; + config.channel_options.commit_upfront_shutdown_pubkey = false; + let user_cfgs = [None, Some(config), None]; + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + + let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + + // Use a segwit v0 script supported even without option_shutdown_anysegwit + let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + node_0_shutdown.scriptpubkey = Builder::new().push_int(0) + .push_slice(&[0; 20]) + .into_script(); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_anysegwit_shutdown_script() { + let mut config = UserConfig::default(); + config.channel_options.announced_channel = true; + config.peer_channel_config_limits.force_announced_channel_preference = false; + config.channel_options.commit_upfront_shutdown_pubkey = false; + let user_cfgs = [None, Some(config), None]; + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + + let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + + // Use a non-v0 segwit script supported by option_shutdown_anysegwit + let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + node_0_shutdown.scriptpubkey = Builder::new().push_int(16) + .push_slice(&[0, 0]) + .into_script(); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + match events[0] { + MessageSendEvent::SendShutdown { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } + match events[1] { + MessageSendEvent::SendClosingSigned { node_id, .. } => { assert_eq!(node_id, nodes[1].node.get_our_node_id()) } + _ => panic!("Unexpected event"), + } +} + +#[test] +fn test_unsupported_anysegwit_shutdown_script() { + let mut config = UserConfig::default(); + config.channel_options.announced_channel = true; + config.peer_channel_config_limits.force_announced_channel_preference = false; + config.channel_options.commit_upfront_shutdown_pubkey = false; + let user_cfgs = [None, Some(config), None]; + let chanmon_cfgs = create_chanmon_cfgs(3); + let mut node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + node_cfgs[0].features = InitFeatures::known().clear_shutdown_anysegwit(); + node_cfgs[1].features = InitFeatures::known().clear_shutdown_anysegwit(); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + + // Check that using an unsupported shutdown script fails and a supported one succeeds. + let supported_shutdown_script = chanmon_cfgs[1].keys_manager.get_shutdown_scriptpubkey(); + let unsupported_shutdown_script = + ShutdownScript::new_witness_program(NonZeroU8::new(16).unwrap(), &[0, 40]).unwrap(); + chanmon_cfgs[1].keys_manager + .expect(OnGetShutdownScriptpubkey { returns: unsupported_shutdown_script.clone() }) + .expect(OnGetShutdownScriptpubkey { returns: supported_shutdown_script }); + + let chan = create_announced_chan_between_nodes(&nodes, 0, 1, node_cfgs[0].features.clone(), node_cfgs[1].features.clone()); + match nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()) { + Err(APIError::IncompatibleShutdownScript { script }) => { + assert_eq!(script.into_inner(), unsupported_shutdown_script.clone().into_inner()); + }, + Err(e) => panic!("Unexpected error: {:?}", e), + Ok(_) => panic!("Expected error"), + } + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + + // Use a non-v0 segwit script unsupported without option_shutdown_anysegwit + let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + node_0_shutdown.scriptpubkey = unsupported_shutdown_script.into_inner(); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &node_cfgs[1].features, &node_0_shutdown); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + match events[1] { + MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { + assert_eq!(node_id, nodes[1].node.get_our_node_id()); + assert_eq!(msg.data, "Got a nonstandard scriptpubkey (60020028) from remote peer".to_owned()); + }, + _ => panic!("Unexpected event"), + } + check_added_monitors!(nodes[0], 1); +} + +#[test] +fn test_invalid_shutdown_script() { + let mut config = UserConfig::default(); + config.channel_options.announced_channel = true; + config.peer_channel_config_limits.force_announced_channel_preference = false; + config.channel_options.commit_upfront_shutdown_pubkey = false; + let user_cfgs = [None, Some(config), None]; + let chanmon_cfgs = create_chanmon_cfgs(3); + let node_cfgs = create_node_cfgs(3, &chanmon_cfgs); + let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &user_cfgs); + let nodes = create_network(3, &node_cfgs, &node_chanmgrs); + + let chan = create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); + nodes[1].node.close_channel(&OutPoint { txid: chan.3.txid(), index: 0 }.to_channel_id()).unwrap(); + check_added_monitors!(nodes[1], 1); + + // Use a segwit v0 script with an unsupported witness program + let mut node_0_shutdown = get_event_msg!(nodes[1], MessageSendEvent::SendShutdown, nodes[0].node.get_our_node_id()); + node_0_shutdown.scriptpubkey = Builder::new().push_int(0) + .push_slice(&[0, 0]) + .into_script(); + nodes[0].node.handle_shutdown(&nodes[1].node.get_our_node_id(), &InitFeatures::known(), &node_0_shutdown); + + let events = nodes[0].node.get_and_clear_pending_msg_events(); + assert_eq!(events.len(), 2); + match events[1] { + MessageSendEvent::HandleError { action: ErrorAction::SendErrorMessage { ref msg }, node_id } => { + assert_eq!(node_id, nodes[1].node.get_our_node_id()); + assert_eq!(msg.data, "Got a nonstandard scriptpubkey (00020000) from remote peer".to_owned()) + }, + _ => panic!("Unexpected event"), + } + check_added_monitors!(nodes[0], 1); +} -- 2.39.5