_ Git - rust-lightning/blob - lightning/src/ln/offers_tests.rs

   1 // This file is Copyright its original authors, visible in version control
   2 // history.
   3 //
   4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
   5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
   7 // You may not use this file except in accordance with one or both of these
   8 // licenses.
   9
  10 //! Functional tests for the BOLT 12 Offers payment flow.
  11 //!
  12 //! [`ChannelManager`] provides utilities to create [`Offer`]s and [`Refund`]s along with utilities
  13 //! to initiate and request payment for them, respectively. It also manages the payment flow via
  14 //! implementing [`OffersMessageHandler`]. This module tests that functionality, including the
  15 //! resulting [`Event`] generation.
  16 //!
  17 //! Two-node success tests use an announced channel:
  18 //!
  19 //! Alice --- Bob
  20 //!
  21 //! While two-node failure tests use an unannounced channel:
  22 //!
  23 //! Alice ... Bob
  24 //!
  25 //! Six-node tests use unannounced channels for the sender and recipient and announced channels for
  26 //! the rest of the network.
  27 //!
  28 //!               nodes[4]
  29 //!              /        \
  30 //!             /          \
  31 //!            /            \
  32 //! Alice ... Bob -------- Charlie ... David
  33 //!            \            /
  34 //!             \          /
  35 //!              \        /
  36 //!               nodes[5]
  37 //!
  38 //! Unnamed nodes are needed to ensure unannounced nodes can create two-hop blinded paths.
  39 //!
  40 //! Nodes without channels are disconnected and connected as needed to ensure that deterministic
  41 //! blinded paths are used.
  42
  43 use core::time::Duration;
  44 use crate::blinded_path::BlindedPath;
  45 use crate::events::{Event, MessageSendEventsProvider, PaymentPurpose};
  46 use crate::ln::channelmanager::{PaymentId, RecentPaymentDetails, Retry, self};
  47 use crate::ln::functional_test_utils::*;
  48 use crate::ln::msgs::{ChannelMessageHandler, Init, NodeAnnouncement, OnionMessage, OnionMessageHandler, RoutingMessageHandler, SocketAddress, UnsignedGossipMessage, UnsignedNodeAnnouncement};
  49 use crate::offers::invoice::Bolt12Invoice;
  50 use crate::offers::invoice_error::InvoiceError;
  51 use crate::offers::invoice_request::InvoiceRequest;
  52 use crate::offers::parse::Bolt12SemanticError;
  53 use crate::onion_message::messenger::PeeledOnion;
  54 use crate::onion_message::offers::OffersMessage;
  55 use crate::onion_message::packet::ParsedOnionMessageContents;
  56 use crate::routing::gossip::{NodeAlias, NodeId};
  57 use crate::sign::{NodeSigner, Recipient};
  58
  59 use crate::prelude::*;
  60
  61 macro_rules! expect_recent_payment {
  62         ($node: expr, $payment_state: path, $payment_id: expr) => {
  63                 match $node.node.list_recent_payments().first() {
  64                         Some(&$payment_state { payment_id: actual_payment_id, .. }) => {
  65                                 assert_eq!($payment_id, actual_payment_id);
  66                         },
  67                         Some(_) => panic!("Unexpected recent payment state"),
  68                         None => panic!("No recent payments"),
  69                 }
  70         }
  71 }
  72
  73 fn connect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, node_b: &Node<'a, 'b, 'c>) {
  74         let node_id_a = node_a.node.get_our_node_id();
  75         let node_id_b = node_b.node.get_our_node_id();
  76
  77         let init_a = Init {
  78                 features: node_a.init_features(&node_id_b),
  79                 networks: None,
  80                 remote_network_address: None,
  81         };
  82         let init_b = Init {
  83                 features: node_b.init_features(&node_id_a),
  84                 networks: None,
  85                 remote_network_address: None,
  86         };
  87
  88         node_a.node.peer_connected(&node_id_b, &init_b, true).unwrap();
  89         node_b.node.peer_connected(&node_id_a, &init_a, false).unwrap();
  90         node_a.onion_messenger.peer_connected(&node_id_b, &init_b, true).unwrap();
  91         node_b.onion_messenger.peer_connected(&node_id_a, &init_a, false).unwrap();
  92 }
  93
  94 fn disconnect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>]) {
  95         for node_b in peers {
  96                 node_a.node.peer_disconnected(&node_b.node.get_our_node_id());
  97                 node_b.node.peer_disconnected(&node_a.node.get_our_node_id());
  98                 node_a.onion_messenger.peer_disconnected(&node_b.node.get_our_node_id());
  99                 node_b.onion_messenger.peer_disconnected(&node_a.node.get_our_node_id());
 100         }
 101 }
 102
 103 fn announce_node_address<'a, 'b, 'c>(
 104         node: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>], address: SocketAddress,
 105 ) {
 106         let features = node.onion_messenger.provided_node_features()
 107                 | node.gossip_sync.provided_node_features();
 108         let rgb = [0u8; 3];
 109         let announcement = UnsignedNodeAnnouncement {
 110                 features,
 111                 timestamp: 1000,
 112                 node_id: NodeId::from_pubkey(&node.keys_manager.get_node_id(Recipient::Node).unwrap()),
 113                 rgb,
 114                 alias: NodeAlias([0u8; 32]),
 115                 addresses: vec![address],
 116                 excess_address_data: Vec::new(),
 117                 excess_data: Vec::new(),
 118         };
 119         let signature = node.keys_manager.sign_gossip_message(
 120                 UnsignedGossipMessage::NodeAnnouncement(&announcement)
 121         ).unwrap();
 122
 123         let msg = NodeAnnouncement {
 124                 signature,
 125                 contents: announcement
 126         };
 127
 128         node.gossip_sync.handle_node_announcement(&msg).unwrap();
 129         for peer in peers {
 130                 peer.gossip_sync.handle_node_announcement(&msg).unwrap();
 131         }
 132 }
 133
 134 fn route_bolt12_payment<'a, 'b, 'c>(
 135         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], invoice: &Bolt12Invoice
 136 ) {
 137         // Monitor added when handling the invoice onion message.
 138         check_added_monitors(node, 1);
 139
 140         let mut events = node.node.get_and_clear_pending_msg_events();
 141         assert_eq!(events.len(), 1);
 142         let ev = remove_first_msg_event_to_node(&path[0].node.get_our_node_id(), &mut events);
 143
 144         // Use a fake payment_hash and bypass checking for the PaymentClaimable event since the
 145         // invoice contains the payment_hash but it was encrypted inside an onion message.
 146         let amount_msats = invoice.amount_msats();
 147         let payment_hash = invoice.payment_hash();
 148         do_pass_along_path(
 149                 node, path, amount_msats, payment_hash, None, ev, false, false, None, false
 150         );
 151 }
 152
 153 fn claim_bolt12_payment<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>]) {
 154         let recipient = &path[path.len() - 1];
 155         match get_event!(recipient, Event::PaymentClaimable) {
 156                 Event::PaymentClaimable {
 157                         purpose: PaymentPurpose::InvoicePayment {
 158                                 payment_preimage: Some(payment_preimage), ..
 159                         }, ..
 160                 } => claim_payment(node, path, payment_preimage),
 161                 _ => panic!(),
 162         };
 163 }
 164
 165 fn extract_invoice_request<'a, 'b, 'c>(
 166         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 167 ) -> (InvoiceRequest, Option<BlindedPath>) {
 168         match node.onion_messenger.peel_onion_message(message) {
 169                 Ok(PeeledOnion::Receive(message, _, reply_path)) => match message {
 170                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 171                                 OffersMessage::InvoiceRequest(invoice_request) => (invoice_request, reply_path),
 172                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 173                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 174                         },
 175                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 176                 },
 177                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 178                 Err(e) => panic!("Failed to process onion message {:?}", e),
 179         }
 180 }
 181
 182 fn extract_invoice<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, message: &OnionMessage) -> Bolt12Invoice {
 183         match node.onion_messenger.peel_onion_message(message) {
 184                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 185                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 186                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 187                                 OffersMessage::Invoice(invoice) => invoice,
 188                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 189                         },
 190                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 191                 },
 192                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 193                 Err(e) => panic!("Failed to process onion message {:?}", e),
 194         }
 195 }
 196
 197 fn extract_invoice_error<'a, 'b, 'c>(
 198         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 199 ) -> InvoiceError {
 200         match node.onion_messenger.peel_onion_message(message) {
 201                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 202                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 203                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 204                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 205                                 OffersMessage::InvoiceError(error) => error,
 206                         },
 207                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 208                 },
 209                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 210                 Err(e) => panic!("Failed to process onion message {:?}", e),
 211         }
 212 }
 213
 214 /// Checks that blinded paths without Tor-only nodes are preferred when constructing an offer.
 215 #[test]
 216 fn prefers_non_tor_nodes_in_blinded_paths() {
 217         let mut accept_forward_cfg = test_default_channel_config();
 218         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 219
 220         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 221         features.set_onion_messages_optional();
 222         features.set_route_blinding_optional();
 223
 224         let chanmon_cfgs = create_chanmon_cfgs(6);
 225         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 226
 227         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 228
 229         let node_chanmgrs = create_node_chanmgrs(
 230                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 231         );
 232         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 233
 234         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 235         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 236         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 237         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 238         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 239         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 240         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 241
 242         // Add an extra channel so that more than one of Bob's peers have MIN_PEER_CHANNELS.
 243         create_announced_chan_between_nodes_with_value(&nodes, 4, 5, 10_000_000, 1_000_000_000);
 244
 245         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 246         let bob_id = bob.node.get_our_node_id();
 247         let charlie_id = charlie.node.get_our_node_id();
 248
 249         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 250         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 251
 252         let tor = SocketAddress::OnionV2([255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 38, 7]);
 253         announce_node_address(charlie, &[alice, bob, david, &nodes[4], &nodes[5]], tor);
 254
 255         let offer = bob.node
 256                 .create_offer_builder("coffee".to_string()).unwrap()
 257                 .amount_msats(10_000_000)
 258                 .build().unwrap();
 259         assert_ne!(offer.signing_pubkey(), bob_id);
 260         assert!(!offer.paths().is_empty());
 261         for path in offer.paths() {
 262                 assert_ne!(path.introduction_node_id, charlie_id);
 263         }
 264 }
 265
 266 /// Checks that blinded paths prefer an introduction node that is the most connected.
 267 #[test]
 268 fn prefers_more_connected_nodes_in_blinded_paths() {
 269         let mut accept_forward_cfg = test_default_channel_config();
 270         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 271
 272         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 273         features.set_onion_messages_optional();
 274         features.set_route_blinding_optional();
 275
 276         let chanmon_cfgs = create_chanmon_cfgs(6);
 277         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 278
 279         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 280
 281         let node_chanmgrs = create_node_chanmgrs(
 282                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 283         );
 284         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 285
 286         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 287         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 288         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 289         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 290         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 291         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 292         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 293
 294         // Add extra channels so that more than one of Bob's peers have MIN_PEER_CHANNELS and one has
 295         // more than the others.
 296         create_announced_chan_between_nodes_with_value(&nodes, 0, 4, 10_000_000, 1_000_000_000);
 297         create_announced_chan_between_nodes_with_value(&nodes, 3, 4, 10_000_000, 1_000_000_000);
 298
 299         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 300         let bob_id = bob.node.get_our_node_id();
 301
 302         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 303         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 304
 305         let offer = bob.node
 306                 .create_offer_builder("coffee".to_string()).unwrap()
 307                 .amount_msats(10_000_000)
 308                 .build().unwrap();
 309         assert_ne!(offer.signing_pubkey(), bob_id);
 310         assert!(!offer.paths().is_empty());
 311         for path in offer.paths() {
 312                 assert_eq!(path.introduction_node_id, nodes[4].node.get_our_node_id());
 313         }
 314 }
 315
 316 /// Checks that an offer can be paid through blinded paths and that ephemeral pubkeys are used
 317 /// rather than exposing a node's pubkey.
 318 #[test]
 319 fn creates_and_pays_for_offer_using_two_hop_blinded_path() {
 320         let mut accept_forward_cfg = test_default_channel_config();
 321         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 322
 323         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 324         features.set_onion_messages_optional();
 325         features.set_route_blinding_optional();
 326
 327         let chanmon_cfgs = create_chanmon_cfgs(6);
 328         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 329
 330         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 331
 332         let node_chanmgrs = create_node_chanmgrs(
 333                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 334         );
 335         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 336
 337         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 338         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 339         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 340         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 341         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 342         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 343         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 344
 345         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 346         let alice_id = alice.node.get_our_node_id();
 347         let bob_id = bob.node.get_our_node_id();
 348         let charlie_id = charlie.node.get_our_node_id();
 349         let david_id = david.node.get_our_node_id();
 350
 351         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 352         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 353
 354         let offer = alice.node
 355                 .create_offer_builder("coffee".to_string()).unwrap()
 356                 .amount_msats(10_000_000)
 357                 .build().unwrap();
 358         assert_ne!(offer.signing_pubkey(), alice_id);
 359         assert!(!offer.paths().is_empty());
 360         for path in offer.paths() {
 361                 assert_eq!(path.introduction_node_id, bob_id);
 362         }
 363
 364         let payment_id = PaymentId([1; 32]);
 365         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 366                 .unwrap();
 367         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 368
 369         connect_peers(david, bob);
 370
 371         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 372         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 373
 374         connect_peers(alice, charlie);
 375
 376         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 377         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 378
 379         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 380         assert_eq!(invoice_request.amount_msats(), None);
 381         assert_ne!(invoice_request.payer_id(), david_id);
 382         assert_eq!(reply_path.unwrap().introduction_node_id, charlie_id);
 383
 384         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 385         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 386
 387         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 388         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 389
 390         let invoice = extract_invoice(david, &onion_message);
 391         assert_eq!(invoice.amount_msats(), 10_000_000);
 392         assert_ne!(invoice.signing_pubkey(), alice_id);
 393         assert!(!invoice.payment_paths().is_empty());
 394         for (_, path) in invoice.payment_paths() {
 395                 assert_eq!(path.introduction_node_id, bob_id);
 396         }
 397
 398         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 399         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 400
 401         claim_bolt12_payment(david, &[charlie, bob, alice]);
 402         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 403 }
 404
 405 /// Checks that a refund can be paid through blinded paths and that ephemeral pubkeys are used
 406 /// rather than exposing a node's pubkey.
 407 #[test]
 408 fn creates_and_pays_for_refund_using_two_hop_blinded_path() {
 409         let mut accept_forward_cfg = test_default_channel_config();
 410         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 411
 412         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 413         features.set_onion_messages_optional();
 414         features.set_route_blinding_optional();
 415
 416         let chanmon_cfgs = create_chanmon_cfgs(6);
 417         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 418
 419         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 420
 421         let node_chanmgrs = create_node_chanmgrs(
 422                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 423         );
 424         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 425
 426         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 427         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 428         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 429         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 430         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 431         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 432         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 433
 434         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 435         let alice_id = alice.node.get_our_node_id();
 436         let bob_id = bob.node.get_our_node_id();
 437         let charlie_id = charlie.node.get_our_node_id();
 438         let david_id = david.node.get_our_node_id();
 439
 440         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 441         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 442
 443         let absolute_expiry = Duration::from_secs(u64::MAX);
 444         let payment_id = PaymentId([1; 32]);
 445         let refund = david.node
 446                 .create_refund_builder(
 447                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 448                 )
 449                 .unwrap()
 450                 .build().unwrap();
 451         assert_eq!(refund.amount_msats(), 10_000_000);
 452         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 453         assert_ne!(refund.payer_id(), david_id);
 454         assert!(!refund.paths().is_empty());
 455         for path in refund.paths() {
 456                 assert_eq!(path.introduction_node_id, charlie_id);
 457         }
 458         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 459
 460         alice.node.request_refund_payment(&refund).unwrap();
 461
 462         connect_peers(alice, charlie);
 463
 464         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 465         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 466
 467         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 468         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 469
 470         let invoice = extract_invoice(david, &onion_message);
 471         assert_eq!(invoice.amount_msats(), 10_000_000);
 472         assert_ne!(invoice.signing_pubkey(), alice_id);
 473         assert!(!invoice.payment_paths().is_empty());
 474         for (_, path) in invoice.payment_paths() {
 475                 assert_eq!(path.introduction_node_id, bob_id);
 476         }
 477
 478         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 479         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 480
 481         claim_bolt12_payment(david, &[charlie, bob, alice]);
 482         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 483 }
 484
 485 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 486 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 487 /// introduction node of the blinded path.
 488 #[test]
 489 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 490         let chanmon_cfgs = create_chanmon_cfgs(2);
 491         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 492         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 493         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 494
 495         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 496
 497         let alice = &nodes[0];
 498         let alice_id = alice.node.get_our_node_id();
 499         let bob = &nodes[1];
 500         let bob_id = bob.node.get_our_node_id();
 501
 502         let offer = alice.node
 503                 .create_offer_builder("coffee".to_string()).unwrap()
 504                 .amount_msats(10_000_000)
 505                 .build().unwrap();
 506         assert_ne!(offer.signing_pubkey(), alice_id);
 507         assert!(!offer.paths().is_empty());
 508         for path in offer.paths() {
 509                 assert_eq!(path.introduction_node_id, alice_id);
 510         }
 511
 512         let payment_id = PaymentId([1; 32]);
 513         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 514         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 515
 516         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 517         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 518
 519         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 520         assert_eq!(invoice_request.amount_msats(), None);
 521         assert_ne!(invoice_request.payer_id(), bob_id);
 522         assert_eq!(reply_path.unwrap().introduction_node_id, bob_id);
 523
 524         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 525         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 526
 527         let invoice = extract_invoice(bob, &onion_message);
 528         assert_eq!(invoice.amount_msats(), 10_000_000);
 529         assert_ne!(invoice.signing_pubkey(), alice_id);
 530         assert!(!invoice.payment_paths().is_empty());
 531         for (_, path) in invoice.payment_paths() {
 532                 assert_eq!(path.introduction_node_id, alice_id);
 533         }
 534
 535         route_bolt12_payment(bob, &[alice], &invoice);
 536         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 537
 538         claim_bolt12_payment(bob, &[alice]);
 539         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 540 }
 541
 542 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 543 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 544 /// introduction node of the blinded path.
 545 #[test]
 546 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 547         let chanmon_cfgs = create_chanmon_cfgs(2);
 548         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 549         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 550         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 551
 552         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 553
 554         let alice = &nodes[0];
 555         let alice_id = alice.node.get_our_node_id();
 556         let bob = &nodes[1];
 557         let bob_id = bob.node.get_our_node_id();
 558
 559         let absolute_expiry = Duration::from_secs(u64::MAX);
 560         let payment_id = PaymentId([1; 32]);
 561         let refund = bob.node
 562                 .create_refund_builder(
 563                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 564                 )
 565                 .unwrap()
 566                 .build().unwrap();
 567         assert_eq!(refund.amount_msats(), 10_000_000);
 568         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 569         assert_ne!(refund.payer_id(), bob_id);
 570         assert!(!refund.paths().is_empty());
 571         for path in refund.paths() {
 572                 assert_eq!(path.introduction_node_id, bob_id);
 573         }
 574         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 575
 576         alice.node.request_refund_payment(&refund).unwrap();
 577
 578         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 579         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 580
 581         let invoice = extract_invoice(bob, &onion_message);
 582         assert_eq!(invoice.amount_msats(), 10_000_000);
 583         assert_ne!(invoice.signing_pubkey(), alice_id);
 584         assert!(!invoice.payment_paths().is_empty());
 585         for (_, path) in invoice.payment_paths() {
 586                 assert_eq!(path.introduction_node_id, alice_id);
 587         }
 588
 589         route_bolt12_payment(bob, &[alice], &invoice);
 590         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 591
 592         claim_bolt12_payment(bob, &[alice]);
 593         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 594 }
 595
 596 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 597 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 598 /// blinded paths as required by the spec.
 599 #[test]
 600 fn pays_for_offer_without_blinded_paths() {
 601         let chanmon_cfgs = create_chanmon_cfgs(2);
 602         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 603         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 604         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 605
 606         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 607
 608         let alice = &nodes[0];
 609         let alice_id = alice.node.get_our_node_id();
 610         let bob = &nodes[1];
 611         let bob_id = bob.node.get_our_node_id();
 612
 613         let offer = alice.node
 614                 .create_offer_builder("coffee".to_string()).unwrap()
 615                 .clear_paths()
 616                 .amount_msats(10_000_000)
 617                 .build().unwrap();
 618         assert_eq!(offer.signing_pubkey(), alice_id);
 619         assert!(offer.paths().is_empty());
 620
 621         let payment_id = PaymentId([1; 32]);
 622         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 623         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 624
 625         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 626         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 627
 628         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 629         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 630
 631         let invoice = extract_invoice(bob, &onion_message);
 632         route_bolt12_payment(bob, &[alice], &invoice);
 633         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 634
 635         claim_bolt12_payment(bob, &[alice]);
 636         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 637 }
 638
 639 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 640 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 641 #[test]
 642 fn pays_for_refund_without_blinded_paths() {
 643         let chanmon_cfgs = create_chanmon_cfgs(2);
 644         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 645         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 646         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 647
 648         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 649
 650         let alice = &nodes[0];
 651         let alice_id = alice.node.get_our_node_id();
 652         let bob = &nodes[1];
 653         let bob_id = bob.node.get_our_node_id();
 654
 655         let absolute_expiry = Duration::from_secs(u64::MAX);
 656         let payment_id = PaymentId([1; 32]);
 657         let refund = bob.node
 658                 .create_refund_builder(
 659                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 660                 )
 661                 .unwrap()
 662                 .clear_paths()
 663                 .build().unwrap();
 664         assert_eq!(refund.payer_id(), bob_id);
 665         assert!(refund.paths().is_empty());
 666         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 667
 668         alice.node.request_refund_payment(&refund).unwrap();
 669
 670         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 671         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 672
 673         let invoice = extract_invoice(bob, &onion_message);
 674         route_bolt12_payment(bob, &[alice], &invoice);
 675         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 676
 677         claim_bolt12_payment(bob, &[alice]);
 678         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 679 }
 680
 681 /// Fails creating an offer when a blinded path cannot be created without exposing the node's id.
 682 #[test]
 683 fn fails_creating_offer_without_blinded_paths() {
 684         let chanmon_cfgs = create_chanmon_cfgs(2);
 685         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 686         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 687         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 688
 689         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 690
 691         match nodes[0].node.create_offer_builder("coffee".to_string()) {
 692                 Ok(_) => panic!("Expected error"),
 693                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 694         }
 695 }
 696
 697 /// Fails creating a refund when a blinded path cannot be created without exposing the node's id.
 698 #[test]
 699 fn fails_creating_refund_without_blinded_paths() {
 700         let chanmon_cfgs = create_chanmon_cfgs(2);
 701         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 702         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 703         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 704
 705         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 706
 707         let absolute_expiry = Duration::from_secs(u64::MAX);
 708         let payment_id = PaymentId([1; 32]);
 709
 710         match nodes[0].node.create_refund_builder(
 711                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 712         ) {
 713                 Ok(_) => panic!("Expected error"),
 714                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 715         }
 716
 717         assert!(nodes[0].node.list_recent_payments().is_empty());
 718 }
 719
 720 /// Fails creating an invoice request when a blinded reply path cannot be created without exposing
 721 /// the node's id.
 722 #[test]
 723 fn fails_creating_invoice_request_without_blinded_reply_path() {
 724         let chanmon_cfgs = create_chanmon_cfgs(6);
 725         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 726         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 727         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 728
 729         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 730         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 731         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 732         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 733         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 734
 735         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 736
 737         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 738         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 739
 740         let offer = alice.node
 741                 .create_offer_builder("coffee".to_string()).unwrap()
 742                 .amount_msats(10_000_000)
 743                 .build().unwrap();
 744
 745         let payment_id = PaymentId([1; 32]);
 746
 747         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 748                 Ok(_) => panic!("Expected error"),
 749                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 750         }
 751
 752         assert!(nodes[0].node.list_recent_payments().is_empty());
 753 }
 754
 755 #[test]
 756 fn fails_creating_invoice_request_with_duplicate_payment_id() {
 757         let chanmon_cfgs = create_chanmon_cfgs(6);
 758         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 759         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 760         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 761
 762         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 763         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 764         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 765         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 766         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 767         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 768         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 769
 770         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 771
 772         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 773
 774         let offer = alice.node
 775                 .create_offer_builder("coffee".to_string()).unwrap()
 776                 .amount_msats(10_000_000)
 777                 .build().unwrap();
 778
 779         let payment_id = PaymentId([1; 32]);
 780         assert!(
 781                 david.node.pay_for_offer(
 782                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
 783                 ).is_ok()
 784         );
 785         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 786
 787         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 788                 Ok(_) => panic!("Expected error"),
 789                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 790         }
 791
 792         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 793 }
 794
 795 #[test]
 796 fn fails_creating_refund_with_duplicate_payment_id() {
 797         let chanmon_cfgs = create_chanmon_cfgs(2);
 798         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 799         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 800         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 801
 802         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 803
 804         let absolute_expiry = Duration::from_secs(u64::MAX);
 805         let payment_id = PaymentId([1; 32]);
 806         assert!(
 807                 nodes[0].node.create_refund_builder(
 808                         "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 809                 ).is_ok()
 810         );
 811         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 812
 813         match nodes[0].node.create_refund_builder(
 814                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 815         ) {
 816                 Ok(_) => panic!("Expected error"),
 817                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 818         }
 819
 820         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 821 }
 822
 823 #[test]
 824 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
 825         let mut accept_forward_cfg = test_default_channel_config();
 826         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 827
 828         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 829         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 830         features.set_onion_messages_optional();
 831         features.clear_route_blinding();
 832
 833         let chanmon_cfgs = create_chanmon_cfgs(6);
 834         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 835
 836         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 837
 838         let node_chanmgrs = create_node_chanmgrs(
 839                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 840         );
 841         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 842
 843         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 844         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 845         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 846         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 847         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 848         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 849         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 850
 851         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 852         let alice_id = alice.node.get_our_node_id();
 853         let bob_id = bob.node.get_our_node_id();
 854         let charlie_id = charlie.node.get_our_node_id();
 855         let david_id = david.node.get_our_node_id();
 856
 857         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 858         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 859
 860         let offer = alice.node
 861                 .create_offer_builder("coffee".to_string()).unwrap()
 862                 .amount_msats(10_000_000)
 863                 .build().unwrap();
 864
 865         let payment_id = PaymentId([1; 32]);
 866         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 867                 .unwrap();
 868
 869         connect_peers(david, bob);
 870
 871         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 872         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 873
 874         connect_peers(alice, charlie);
 875
 876         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 877         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 878
 879         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 880         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 881
 882         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 883         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 884
 885         let invoice_error = extract_invoice_error(david, &onion_message);
 886         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
 887 }
 888
 889 #[test]
 890 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
 891         let mut accept_forward_cfg = test_default_channel_config();
 892         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 893
 894         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 895         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 896         features.set_onion_messages_optional();
 897         features.clear_route_blinding();
 898
 899         let chanmon_cfgs = create_chanmon_cfgs(6);
 900         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 901
 902         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 903
 904         let node_chanmgrs = create_node_chanmgrs(
 905                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 906         );
 907         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 908
 909         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 910         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 911         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 912         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 913         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 914         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 915         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 916
 917         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 918
 919         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 920         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 921
 922         let absolute_expiry = Duration::from_secs(u64::MAX);
 923         let payment_id = PaymentId([1; 32]);
 924         let refund = david.node
 925                 .create_refund_builder(
 926                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 927                 )
 928                 .unwrap()
 929                 .build().unwrap();
 930
 931         match alice.node.request_refund_payment(&refund) {
 932                 Ok(_) => panic!("Expected error"),
 933                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 934         }
 935 }
 936
 937 #[test]
 938 fn fails_paying_invoice_more_than_once() {
 939         let mut accept_forward_cfg = test_default_channel_config();
 940         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 941
 942         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 943         features.set_onion_messages_optional();
 944         features.set_route_blinding_optional();
 945
 946         let chanmon_cfgs = create_chanmon_cfgs(6);
 947         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 948
 949         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 950
 951         let node_chanmgrs = create_node_chanmgrs(
 952                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 953         );
 954         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 955
 956         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 957         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 958         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 959         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 960         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 961         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 962         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 963
 964         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 965         let alice_id = alice.node.get_our_node_id();
 966         let bob_id = bob.node.get_our_node_id();
 967         let charlie_id = charlie.node.get_our_node_id();
 968         let david_id = david.node.get_our_node_id();
 969
 970         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 971         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 972
 973         let absolute_expiry = Duration::from_secs(u64::MAX);
 974         let payment_id = PaymentId([1; 32]);
 975         let refund = david.node
 976                 .create_refund_builder(
 977                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 978                 )
 979                 .unwrap()
 980                 .build().unwrap();
 981         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 982
 983         // Alice sends the first invoice
 984         alice.node.request_refund_payment(&refund).unwrap();
 985
 986         connect_peers(alice, charlie);
 987
 988         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 989         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 990
 991         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 992         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 993
 994         // David pays the first invoice
 995         let invoice1 = extract_invoice(david, &onion_message);
 996
 997         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
 998         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 999
1000         claim_bolt12_payment(david, &[charlie, bob, alice]);
1001         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1002
1003         disconnect_peers(alice, &[charlie]);
1004
1005         // Alice sends the second invoice
1006         alice.node.request_refund_payment(&refund).unwrap();
1007
1008         connect_peers(alice, charlie);
1009         connect_peers(david, bob);
1010
1011         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1012         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1013
1014         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1015         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1016
1017         let invoice2 = extract_invoice(david, &onion_message);
1018         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1019
1020         // David sends an error instead of paying the second invoice
1021         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1022         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1023
1024         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1025         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1026
1027         let invoice_error = extract_invoice_error(alice, &onion_message);
1028         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1029 }