Ensure we read the full TLV stream length when maybe-reading `None`
[rust-lightning] / lightning / src / ln / functional_tests.rs
index 9777ad75d2337edfa73267a29a1e398cf89284c5..5711f238aa0c519a8ccf58aae91bb80694dcf70f 100644 (file)
@@ -8212,8 +8212,10 @@ fn test_onion_value_mpp_set_calculation() {
                                RecipientOnionFields::secret_only(our_payment_secret), height + 1, &None).unwrap();
                        // Edit amt_to_forward to simulate the sender having set
                        // the final amount and the routing node taking less fee
-                       if let msgs::OutboundOnionPayload::Receive { ref mut amt_msat, .. } = onion_payloads[1] {
-                               *amt_msat = 99_000;
+                       if let msgs::OutboundOnionPayload::Receive {
+                               ref mut sender_intended_htlc_amt_msat, ..
+                       } = onion_payloads[1] {
+                               *sender_intended_htlc_amt_msat = 99_000;
                        } else { panic!() }
                        let new_onion_packet = onion_utils::construct_onion_packet(onion_payloads, onion_keys, [0; 32], &our_payment_hash).unwrap();
                        payment_event.msgs[0].onion_routing_packet = new_onion_packet;
@@ -9032,6 +9034,46 @@ fn test_peer_funding_sidechannel() {
        get_err_msg(&nodes[0], &nodes[1].node.get_our_node_id());
 }
 
+#[test]
+fn test_duplicate_conflicting_funding_from_second_peer() {
+       // Test that if a user tries to fund a channel with a funding outpoint they'd previously used
+       // we don't try to remove the previous ChannelMonitor. This is largely a test to ensure we
+       // don't regress in the fuzzer, as such funding getting passed our outpoint-matches checks
+       // implies the user (and our counterparty) has reused cryptographic keys across channels, which
+       // we require the user not do.
+       let chanmon_cfgs = create_chanmon_cfgs(4);
+       let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+       let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, None, None, None]);
+       let nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+       let temp_chan_id = exchange_open_accept_chan(&nodes[0], &nodes[1], 1_000_000, 0);
+
+       let (_, tx, funding_output) =
+               create_funding_transaction(&nodes[0], &nodes[1].node.get_our_node_id(), 1_000_000, 42);
+
+       // Now that we have a funding outpoint, create a dummy `ChannelMonitor` and insert it into
+       // nodes[0]'s ChainMonitor so that the initial `ChannelMonitor` write fails.
+       let dummy_chan_id = create_chan_between_nodes(&nodes[2], &nodes[3]).3;
+       let dummy_monitor = get_monitor!(nodes[2], dummy_chan_id).clone();
+       nodes[0].chain_monitor.chain_monitor.watch_channel(funding_output, dummy_monitor).unwrap();
+
+       nodes[0].node.funding_transaction_generated(&temp_chan_id, &nodes[1].node.get_our_node_id(), tx.clone()).unwrap();
+
+       let mut funding_created_msg = get_event_msg!(nodes[0], MessageSendEvent::SendFundingCreated, nodes[1].node.get_our_node_id());
+       nodes[1].node.handle_funding_created(&nodes[0].node.get_our_node_id(), &funding_created_msg);
+       let funding_signed_msg = get_event_msg!(nodes[1], MessageSendEvent::SendFundingSigned, nodes[0].node.get_our_node_id());
+       check_added_monitors!(nodes[1], 1);
+       expect_channel_pending_event(&nodes[1], &nodes[0].node.get_our_node_id());
+
+       nodes[0].node.handle_funding_signed(&nodes[1].node.get_our_node_id(), &funding_signed_msg);
+       // At this point, the channel should be closed, after having generated one monitor write (the
+       // watch_channel call which failed), but zero monitor updates.
+       check_added_monitors!(nodes[0], 1);
+       get_err_msg(&nodes[0], &nodes[1].node.get_our_node_id());
+       let err_reason = ClosureReason::ProcessingError { err: "Channel funding outpoint was a duplicate".to_owned() };
+       check_closed_events(&nodes[0], &[ExpectedCloseEvent::from_id_reason(funding_signed_msg.channel_id, true, err_reason)]);
+}
+
 #[test]
 fn test_duplicate_funding_err_in_funding() {
        // Test that if we have a live channel with one peer, then another peer comes along and tries
@@ -10647,17 +10689,23 @@ fn test_disconnect_in_funding_batch() {
        nodes[0].node.peer_disconnected(&nodes[2].node.get_our_node_id());
 
        // The channels in the batch will close immediately.
-       let channel_id_1 = OutPoint { txid: tx.txid(), index: 0 }.to_channel_id();
-       let channel_id_2 = OutPoint { txid: tx.txid(), index: 1 }.to_channel_id();
+       let funding_txo_1 = OutPoint { txid: tx.txid(), index: 0 };
+       let funding_txo_2 = OutPoint { txid: tx.txid(), index: 1 };
+       let channel_id_1 = funding_txo_1.to_channel_id();
+       let channel_id_2 = funding_txo_2.to_channel_id();
        check_closed_events(&nodes[0], &[
                ExpectedCloseEvent {
                        channel_id: Some(channel_id_1),
                        discard_funding: true,
+                       channel_funding_txo: Some(funding_txo_1),
+                       user_channel_id: Some(42),
                        ..Default::default()
                },
                ExpectedCloseEvent {
                        channel_id: Some(channel_id_2),
                        discard_funding: true,
+                       channel_funding_txo: Some(funding_txo_2),
+                       user_channel_id: Some(43),
                        ..Default::default()
                },
        ]);
@@ -10715,8 +10763,10 @@ fn test_batch_funding_close_after_funding_signed() {
        assert_eq!(nodes[0].tx_broadcaster.txn_broadcast().len(), 0);
 
        // Force-close the channel for which we've completed the initial monitor.
-       let channel_id_1 = OutPoint { txid: tx.txid(), index: 0 }.to_channel_id();
-       let channel_id_2 = OutPoint { txid: tx.txid(), index: 1 }.to_channel_id();
+       let funding_txo_1 = OutPoint { txid: tx.txid(), index: 0 };
+       let funding_txo_2 = OutPoint { txid: tx.txid(), index: 1 };
+       let channel_id_1 = funding_txo_1.to_channel_id();
+       let channel_id_2 = funding_txo_2.to_channel_id();
        nodes[0].node.force_close_broadcasting_latest_txn(&channel_id_1, &nodes[1].node.get_our_node_id()).unwrap();
        check_added_monitors(&nodes[0], 2);
        {
@@ -10748,11 +10798,15 @@ fn test_batch_funding_close_after_funding_signed() {
                ExpectedCloseEvent {
                        channel_id: Some(channel_id_1),
                        discard_funding: true,
+                       channel_funding_txo: Some(funding_txo_1),
+                       user_channel_id: Some(42),
                        ..Default::default()
                },
                ExpectedCloseEvent {
                        channel_id: Some(channel_id_2),
                        discard_funding: true,
+                       channel_funding_txo: Some(funding_txo_2),
+                       user_channel_id: Some(43),
                        ..Default::default()
                },
        ]);