use super::*;
use crate::{InvoiceBuilder, Currency};
use bitcoin_hashes::sha256::Hash as Sha256;
+ use lightning::events::Event;
+ use lightning::ln::msgs::ChannelMessageHandler;
use lightning::ln::{PaymentPreimage, PaymentSecret};
use lightning::ln::functional_test_utils::*;
use secp256k1::{SecretKey, Secp256k1};
_ => panic!()
}
}
+
+ #[test]
+ #[cfg(feature = "std")]
+ fn payment_metadata_end_to_end() {
+ // Test that a payment metadata read from an invoice passed to `pay_invoice` makes it all
+ // the way out through the `PaymentClaimable` event.
+ 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);
+ create_announced_chan_between_nodes(&nodes, 0, 1);
+
+ let payment_metadata = vec![42, 43, 44, 45, 46, 47, 48, 49, 42];
+
+ let (payment_hash, payment_secret) =
+ nodes[1].node.create_inbound_payment(None, 7200, None).unwrap();
+
+ let invoice = InvoiceBuilder::new(Currency::Bitcoin)
+ .description("test".into())
+ .payment_hash(Sha256::from_slice(&payment_hash.0).unwrap())
+ .payment_secret(payment_secret)
+ .current_timestamp()
+ .min_final_cltv_expiry_delta(144)
+ .amount_milli_satoshis(50_000)
+ .payment_metadata(payment_metadata.clone())
+ .build_signed(|hash| {
+ Secp256k1::new().sign_ecdsa_recoverable(hash,
+ &nodes[1].keys_manager.backing.get_node_secret_key())
+ })
+ .unwrap();
+
+ pay_invoice(&invoice, Retry::Attempts(0), nodes[0].node).unwrap();
+ check_added_monitors(&nodes[0], 1);
+ let send_event = SendEvent::from_node(&nodes[0]);
+ nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &send_event.msgs[0]);
+ commitment_signed_dance!(nodes[1], nodes[0], &send_event.commitment_msg, false);
+
+ expect_pending_htlcs_forwardable!(nodes[1]);
+
+ let mut events = nodes[1].node.get_and_clear_pending_events();
+ assert_eq!(events.len(), 1);
+ match events.pop().unwrap() {
+ Event::PaymentClaimable { onion_fields, .. } => {
+ assert_eq!(Some(payment_metadata), onion_fields.unwrap().payment_metadata);
+ },
+ _ => panic!("Unexpected event")
+ }
+ }
}
do_claim_from_closed_chan(true);
do_claim_from_closed_chan(false);
}
+
+fn do_test_payment_metadata_consistency(do_reload: bool, do_modify: bool) {
+ // Check that a payment metadata received on one HTLC that doesn't match the one received on
+ // another results in the HTLC being rejected.
+ //
+ // We first set up a diamond shaped network, allowing us to split a payment into two HTLCs, the
+ // first of which we'll deliver and the second of which we'll fail and then re-send with
+ // modified payment metadata, which will in turn result in it being failed by the recipient.
+ let chanmon_cfgs = create_chanmon_cfgs(4);
+ let node_cfgs = create_node_cfgs(4, &chanmon_cfgs);
+ let mut config = test_default_channel_config();
+ config.channel_handshake_config.max_inbound_htlc_value_in_flight_percent_of_channel = 50;
+ let node_chanmgrs = create_node_chanmgrs(4, &node_cfgs, &[None, Some(config), Some(config), Some(config)]);
+
+ let persister;
+ let new_chain_monitor;
+ let nodes_0_deserialized;
+
+ let mut nodes = create_network(4, &node_cfgs, &node_chanmgrs);
+
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 1_000_000, 0);
+ let chan_id_bd = create_announced_chan_between_nodes_with_value(&nodes, 1, 3, 1_000_000, 0).2;
+ create_announced_chan_between_nodes_with_value(&nodes, 0, 2, 1_000_000, 0);
+ let chan_id_cd = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 1_000_000, 0).2;
+
+ // Pay more than half of each channel's max, requiring MPP
+ let amt_msat = 750_000_000;
+ let (payment_preimage, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[3], Some(amt_msat));
+ let payment_id = PaymentId(payment_hash.0);
+ let payment_metadata = vec![44, 49, 52, 142];
+
+ let payment_params = PaymentParameters::from_node_id(nodes[3].node.get_our_node_id(), TEST_FINAL_CLTV)
+ .with_features(nodes[1].node.invoice_features());
+ let mut route_params = RouteParameters {
+ payment_params,
+ final_value_msat: amt_msat,
+ };
+
+ // Send the MPP payment, delivering the updated commitment state to nodes[1].
+ nodes[0].node.send_payment(payment_hash, RecipientOnionFields {
+ payment_secret: Some(payment_secret), payment_metadata: Some(payment_metadata),
+ }, payment_id, route_params.clone(), Retry::Attempts(1)).unwrap();
+ check_added_monitors!(nodes[0], 2);
+
+ let mut send_events = nodes[0].node.get_and_clear_pending_msg_events();
+ assert_eq!(send_events.len(), 2);
+ let first_send = SendEvent::from_event(send_events.pop().unwrap());
+ let second_send = SendEvent::from_event(send_events.pop().unwrap());
+
+ let (b_recv_ev, c_recv_ev) = if first_send.node_id == nodes[1].node.get_our_node_id() {
+ (&first_send, &second_send)
+ } else {
+ (&second_send, &first_send)
+ };
+ nodes[1].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &b_recv_ev.msgs[0]);
+ commitment_signed_dance!(nodes[1], nodes[0], b_recv_ev.commitment_msg, false, true);
+
+ expect_pending_htlcs_forwardable!(nodes[1]);
+ check_added_monitors(&nodes[1], 1);
+ let b_forward_ev = SendEvent::from_node(&nodes[1]);
+ nodes[3].node.handle_update_add_htlc(&nodes[1].node.get_our_node_id(), &b_forward_ev.msgs[0]);
+ commitment_signed_dance!(nodes[3], nodes[1], b_forward_ev.commitment_msg, false, true);
+
+ expect_pending_htlcs_forwardable!(nodes[3]);
+
+ // Before delivering the second MPP HTLC to nodes[2], disconnect nodes[2] and nodes[3], which
+ // will result in nodes[2] failing the HTLC back.
+ nodes[2].node.peer_disconnected(&nodes[3].node.get_our_node_id());
+ nodes[3].node.peer_disconnected(&nodes[2].node.get_our_node_id());
+
+ nodes[2].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &c_recv_ev.msgs[0]);
+ commitment_signed_dance!(nodes[2], nodes[0], c_recv_ev.commitment_msg, false, true);
+
+ let cs_fail = get_htlc_update_msgs(&nodes[2], &nodes[0].node.get_our_node_id());
+ nodes[0].node.handle_update_fail_htlc(&nodes[2].node.get_our_node_id(), &cs_fail.update_fail_htlcs[0]);
+ commitment_signed_dance!(nodes[0], nodes[2], cs_fail.commitment_signed, false, true);
+
+ let payment_fail_retryable_evs = nodes[0].node.get_and_clear_pending_events();
+ assert_eq!(payment_fail_retryable_evs.len(), 2);
+ if let Event::PaymentPathFailed { .. } = payment_fail_retryable_evs[0] {} else { panic!(); }
+ if let Event::PendingHTLCsForwardable { .. } = payment_fail_retryable_evs[1] {} else { panic!(); }
+
+ // Before we allow the HTLC to be retried, optionally change the payment_metadata we have
+ // stored for our payment.
+ if do_modify {
+ nodes[0].node.test_set_payment_metadata(payment_id, Some(Vec::new()));
+ }
+
+ // Optionally reload nodes[3] to check that the payment_metadata is properly serialized with
+ // the payment state.
+ if do_reload {
+ let mon_bd = get_monitor!(nodes[3], chan_id_bd).encode();
+ let mon_cd = get_monitor!(nodes[3], chan_id_cd).encode();
+ reload_node!(nodes[3], config, &nodes[3].node.encode(), &[&mon_bd, &mon_cd],
+ persister, new_chain_monitor, nodes_0_deserialized);
+ nodes[1].node.peer_disconnected(&nodes[3].node.get_our_node_id());
+ reconnect_nodes(&nodes[1], &nodes[3], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+ }
+ reconnect_nodes(&nodes[2], &nodes[3], (true, true), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+
+ // Create a new channel between C and D as A will refuse to retry on the existing one because
+ // it just failed.
+ let chan_id_cd_2 = create_announced_chan_between_nodes_with_value(&nodes, 2, 3, 1_000_000, 0).2;
+
+ // Now retry the failed HTLC.
+ nodes[0].node.process_pending_htlc_forwards();
+ check_added_monitors(&nodes[0], 1);
+ let as_resend = SendEvent::from_node(&nodes[0]);
+ nodes[2].node.handle_update_add_htlc(&nodes[0].node.get_our_node_id(), &as_resend.msgs[0]);
+ commitment_signed_dance!(nodes[2], nodes[0], as_resend.commitment_msg, false, true);
+
+ expect_pending_htlcs_forwardable!(nodes[2]);
+ check_added_monitors(&nodes[2], 1);
+ let cs_forward = SendEvent::from_node(&nodes[2]);
+ nodes[3].node.handle_update_add_htlc(&nodes[2].node.get_our_node_id(), &cs_forward.msgs[0]);
+ commitment_signed_dance!(nodes[3], nodes[2], cs_forward.commitment_msg, false, true);
+
+ // Finally, check that nodes[3] does the correct thing - either accepting the payment or, if
+ // the payment metadata was modified, failing only the one modified HTLC and retaining the
+ // other.
+ if do_modify {
+ expect_pending_htlcs_forwardable_ignore!(nodes[3]);
+ nodes[3].node.process_pending_htlc_forwards();
+ expect_pending_htlcs_forwardable_conditions(nodes[3].node.get_and_clear_pending_events(),
+ &[HTLCDestination::FailedPayment {payment_hash}]);
+ nodes[3].node.process_pending_htlc_forwards();
+
+ check_added_monitors(&nodes[3], 1);
+ let ds_fail = get_htlc_update_msgs(&nodes[3], &nodes[2].node.get_our_node_id());
+
+ nodes[2].node.handle_update_fail_htlc(&nodes[3].node.get_our_node_id(), &ds_fail.update_fail_htlcs[0]);
+ commitment_signed_dance!(nodes[2], nodes[3], ds_fail.commitment_signed, false, true);
+ expect_pending_htlcs_forwardable_conditions(nodes[2].node.get_and_clear_pending_events(),
+ &[HTLCDestination::NextHopChannel { node_id: Some(nodes[3].node.get_our_node_id()), channel_id: chan_id_cd_2 }]);
+ } else {
+ expect_pending_htlcs_forwardable!(nodes[3]);
+ expect_payment_claimable!(nodes[3], payment_hash, payment_secret, amt_msat);
+ claim_payment_along_route(&nodes[0], &[&[&nodes[1], &nodes[3]], &[&nodes[2], &nodes[3]]], false, payment_preimage);
+ }
+}
+
+#[test]
+fn test_payment_metadata_consistency() {
+ do_test_payment_metadata_consistency(true, true);
+ do_test_payment_metadata_consistency(true, false);
+ do_test_payment_metadata_consistency(false, true);
+ do_test_payment_metadata_consistency(false, false);
+}
projects / rust-lightning / commitdiff