_ 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 bitcoin::network::constants::Network;
  44 use core::time::Duration;
  45 use crate::blinded_path::{BlindedPath, IntroductionNode};
  46 use crate::events::{Event, MessageSendEventsProvider, PaymentPurpose};
  47 use crate::ln::channelmanager::{PaymentId, RecentPaymentDetails, Retry, self};
  48 use crate::ln::functional_test_utils::*;
  49 use crate::ln::msgs::{ChannelMessageHandler, Init, NodeAnnouncement, OnionMessage, OnionMessageHandler, RoutingMessageHandler, SocketAddress, UnsignedGossipMessage, UnsignedNodeAnnouncement};
  50 use crate::offers::invoice::Bolt12Invoice;
  51 use crate::offers::invoice_error::InvoiceError;
  52 use crate::offers::invoice_request::InvoiceRequest;
  53 use crate::offers::parse::Bolt12SemanticError;
  54 use crate::onion_message::messenger::PeeledOnion;
  55 use crate::onion_message::offers::OffersMessage;
  56 use crate::onion_message::packet::ParsedOnionMessageContents;
  57 use crate::routing::gossip::{NodeAlias, NodeId};
  58 use crate::sign::{NodeSigner, Recipient};
  59
  60 use crate::prelude::*;
  61
  62 macro_rules! expect_recent_payment {
  63         ($node: expr, $payment_state: path, $payment_id: expr) => {
  64                 match $node.node.list_recent_payments().first() {
  65                         Some(&$payment_state { payment_id: actual_payment_id, .. }) => {
  66                                 assert_eq!($payment_id, actual_payment_id);
  67                         },
  68                         Some(_) => panic!("Unexpected recent payment state"),
  69                         None => panic!("No recent payments"),
  70                 }
  71         }
  72 }
  73
  74 fn connect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, node_b: &Node<'a, 'b, 'c>) {
  75         let node_id_a = node_a.node.get_our_node_id();
  76         let node_id_b = node_b.node.get_our_node_id();
  77
  78         let init_a = Init {
  79                 features: node_a.init_features(&node_id_b),
  80                 networks: None,
  81                 remote_network_address: None,
  82         };
  83         let init_b = Init {
  84                 features: node_b.init_features(&node_id_a),
  85                 networks: None,
  86                 remote_network_address: None,
  87         };
  88
  89         node_a.node.peer_connected(&node_id_b, &init_b, true).unwrap();
  90         node_b.node.peer_connected(&node_id_a, &init_a, false).unwrap();
  91         node_a.onion_messenger.peer_connected(&node_id_b, &init_b, true).unwrap();
  92         node_b.onion_messenger.peer_connected(&node_id_a, &init_a, false).unwrap();
  93 }
  94
  95 fn disconnect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>]) {
  96         for node_b in peers {
  97                 node_a.node.peer_disconnected(&node_b.node.get_our_node_id());
  98                 node_b.node.peer_disconnected(&node_a.node.get_our_node_id());
  99                 node_a.onion_messenger.peer_disconnected(&node_b.node.get_our_node_id());
 100                 node_b.onion_messenger.peer_disconnected(&node_a.node.get_our_node_id());
 101         }
 102 }
 103
 104 fn announce_node_address<'a, 'b, 'c>(
 105         node: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>], address: SocketAddress,
 106 ) {
 107         let features = node.onion_messenger.provided_node_features()
 108                 | node.gossip_sync.provided_node_features();
 109         let rgb = [0u8; 3];
 110         let announcement = UnsignedNodeAnnouncement {
 111                 features,
 112                 timestamp: 1000,
 113                 node_id: NodeId::from_pubkey(&node.keys_manager.get_node_id(Recipient::Node).unwrap()),
 114                 rgb,
 115                 alias: NodeAlias([0u8; 32]),
 116                 addresses: vec![address],
 117                 excess_address_data: Vec::new(),
 118                 excess_data: Vec::new(),
 119         };
 120         let signature = node.keys_manager.sign_gossip_message(
 121                 UnsignedGossipMessage::NodeAnnouncement(&announcement)
 122         ).unwrap();
 123
 124         let msg = NodeAnnouncement {
 125                 signature,
 126                 contents: announcement
 127         };
 128
 129         node.gossip_sync.handle_node_announcement(&msg).unwrap();
 130         for peer in peers {
 131                 peer.gossip_sync.handle_node_announcement(&msg).unwrap();
 132         }
 133 }
 134
 135 fn route_bolt12_payment<'a, 'b, 'c>(
 136         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], invoice: &Bolt12Invoice
 137 ) {
 138         // Monitor added when handling the invoice onion message.
 139         check_added_monitors(node, 1);
 140
 141         let mut events = node.node.get_and_clear_pending_msg_events();
 142         assert_eq!(events.len(), 1);
 143         let ev = remove_first_msg_event_to_node(&path[0].node.get_our_node_id(), &mut events);
 144
 145         // Use a fake payment_hash and bypass checking for the PaymentClaimable event since the
 146         // invoice contains the payment_hash but it was encrypted inside an onion message.
 147         let amount_msats = invoice.amount_msats();
 148         let payment_hash = invoice.payment_hash();
 149         let args = PassAlongPathArgs::new(node, path, amount_msats, payment_hash, ev)
 150                 .without_clearing_recipient_events();
 151         do_pass_along_path(args);
 152 }
 153
 154 fn claim_bolt12_payment<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>]) {
 155         let recipient = &path[path.len() - 1];
 156         match get_event!(recipient, Event::PaymentClaimable) {
 157                 Event::PaymentClaimable {
 158                         purpose: PaymentPurpose::InvoicePayment {
 159                                 payment_preimage: Some(payment_preimage), ..
 160                         }, ..
 161                 } => claim_payment(node, path, payment_preimage),
 162                 _ => panic!(),
 163         };
 164 }
 165
 166 fn extract_invoice_request<'a, 'b, 'c>(
 167         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 168 ) -> (InvoiceRequest, Option<BlindedPath>) {
 169         match node.onion_messenger.peel_onion_message(message) {
 170                 Ok(PeeledOnion::Receive(message, _, reply_path)) => match message {
 171                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 172                                 OffersMessage::InvoiceRequest(invoice_request) => (invoice_request, reply_path),
 173                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 174                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 175                         },
 176                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 177                 },
 178                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 179                 Err(e) => panic!("Failed to process onion message {:?}", e),
 180         }
 181 }
 182
 183 fn extract_invoice<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, message: &OnionMessage) -> Bolt12Invoice {
 184         match node.onion_messenger.peel_onion_message(message) {
 185                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 186                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 187                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 188                                 OffersMessage::Invoice(invoice) => invoice,
 189                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 190                         },
 191                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 192                 },
 193                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 194                 Err(e) => panic!("Failed to process onion message {:?}", e),
 195         }
 196 }
 197
 198 fn extract_invoice_error<'a, 'b, 'c>(
 199         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 200 ) -> InvoiceError {
 201         match node.onion_messenger.peel_onion_message(message) {
 202                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 203                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 204                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 205                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 206                                 OffersMessage::InvoiceError(error) => error,
 207                         },
 208                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 209                 },
 210                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 211                 Err(e) => panic!("Failed to process onion message {:?}", e),
 212         }
 213 }
 214
 215 /// Checks that blinded paths without Tor-only nodes are preferred when constructing an offer.
 216 #[test]
 217 fn prefers_non_tor_nodes_in_blinded_paths() {
 218         let mut accept_forward_cfg = test_default_channel_config();
 219         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 220
 221         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 222         features.set_onion_messages_optional();
 223         features.set_route_blinding_optional();
 224
 225         let chanmon_cfgs = create_chanmon_cfgs(6);
 226         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 227
 228         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 229
 230         let node_chanmgrs = create_node_chanmgrs(
 231                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 232         );
 233         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 234
 235         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 236         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 237         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 238         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 239         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 240         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 241         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 242
 243         // Add an extra channel so that more than one of Bob's peers have MIN_PEER_CHANNELS.
 244         create_announced_chan_between_nodes_with_value(&nodes, 4, 5, 10_000_000, 1_000_000_000);
 245
 246         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 247         let bob_id = bob.node.get_our_node_id();
 248         let charlie_id = charlie.node.get_our_node_id();
 249
 250         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 251         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 252
 253         let tor = SocketAddress::OnionV2([255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 38, 7]);
 254         announce_node_address(charlie, &[alice, bob, david, &nodes[4], &nodes[5]], tor.clone());
 255
 256         let offer = bob.node
 257                 .create_offer_builder("coffee".to_string()).unwrap()
 258                 .amount_msats(10_000_000)
 259                 .build().unwrap();
 260         assert_ne!(offer.signing_pubkey(), bob_id);
 261         assert!(!offer.paths().is_empty());
 262         for path in offer.paths() {
 263                 assert_ne!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 264                 assert_ne!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 265         }
 266
 267         // Use a one-hop blinded path when Bob is announced and all his peers are Tor-only.
 268         announce_node_address(&nodes[4], &[alice, bob, charlie, david, &nodes[5]], tor.clone());
 269         announce_node_address(&nodes[5], &[alice, bob, charlie, david, &nodes[4]], tor.clone());
 270
 271         let offer = bob.node
 272                 .create_offer_builder("coffee".to_string()).unwrap()
 273                 .amount_msats(10_000_000)
 274                 .build().unwrap();
 275         assert_ne!(offer.signing_pubkey(), bob_id);
 276         assert!(!offer.paths().is_empty());
 277         for path in offer.paths() {
 278                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 279         }
 280 }
 281
 282 /// Checks that blinded paths prefer an introduction node that is the most connected.
 283 #[test]
 284 fn prefers_more_connected_nodes_in_blinded_paths() {
 285         let mut accept_forward_cfg = test_default_channel_config();
 286         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 287
 288         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 289         features.set_onion_messages_optional();
 290         features.set_route_blinding_optional();
 291
 292         let chanmon_cfgs = create_chanmon_cfgs(6);
 293         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 294
 295         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 296
 297         let node_chanmgrs = create_node_chanmgrs(
 298                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 299         );
 300         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 301
 302         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 303         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 304         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 305         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 306         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 307         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 308         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 309
 310         // Add extra channels so that more than one of Bob's peers have MIN_PEER_CHANNELS and one has
 311         // more than the others.
 312         create_announced_chan_between_nodes_with_value(&nodes, 0, 4, 10_000_000, 1_000_000_000);
 313         create_announced_chan_between_nodes_with_value(&nodes, 3, 4, 10_000_000, 1_000_000_000);
 314
 315         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 316         let bob_id = bob.node.get_our_node_id();
 317
 318         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 319         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 320
 321         let offer = bob.node
 322                 .create_offer_builder("coffee".to_string()).unwrap()
 323                 .amount_msats(10_000_000)
 324                 .build().unwrap();
 325         assert_ne!(offer.signing_pubkey(), bob_id);
 326         assert!(!offer.paths().is_empty());
 327         for path in offer.paths() {
 328                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(nodes[4].node.get_our_node_id()));
 329         }
 330 }
 331
 332 /// Checks that an offer can be paid through blinded paths and that ephemeral pubkeys are used
 333 /// rather than exposing a node's pubkey.
 334 #[test]
 335 fn creates_and_pays_for_offer_using_two_hop_blinded_path() {
 336         let mut accept_forward_cfg = test_default_channel_config();
 337         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 338
 339         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 340         features.set_onion_messages_optional();
 341         features.set_route_blinding_optional();
 342
 343         let chanmon_cfgs = create_chanmon_cfgs(6);
 344         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 345
 346         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 347
 348         let node_chanmgrs = create_node_chanmgrs(
 349                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 350         );
 351         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 352
 353         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 354         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 355         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 356         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 357         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 358         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 359         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 360
 361         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 362         let alice_id = alice.node.get_our_node_id();
 363         let bob_id = bob.node.get_our_node_id();
 364         let charlie_id = charlie.node.get_our_node_id();
 365         let david_id = david.node.get_our_node_id();
 366
 367         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 368         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 369
 370         let offer = alice.node
 371                 .create_offer_builder("coffee".to_string()).unwrap()
 372                 .amount_msats(10_000_000)
 373                 .build().unwrap();
 374         assert_ne!(offer.signing_pubkey(), alice_id);
 375         assert!(!offer.paths().is_empty());
 376         for path in offer.paths() {
 377                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 378         }
 379
 380         let payment_id = PaymentId([1; 32]);
 381         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 382                 .unwrap();
 383         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 384
 385         connect_peers(david, bob);
 386
 387         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 388         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 389
 390         connect_peers(alice, charlie);
 391
 392         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 393         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 394
 395         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 396         assert_eq!(invoice_request.amount_msats(), None);
 397         assert_ne!(invoice_request.payer_id(), david_id);
 398         assert_eq!(reply_path.unwrap().introduction_node, IntroductionNode::NodeId(charlie_id));
 399
 400         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 401         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 402
 403         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 404         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 405
 406         let invoice = extract_invoice(david, &onion_message);
 407         assert_eq!(invoice.amount_msats(), 10_000_000);
 408         assert_ne!(invoice.signing_pubkey(), alice_id);
 409         assert!(!invoice.payment_paths().is_empty());
 410         for (_, path) in invoice.payment_paths() {
 411                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 412         }
 413
 414         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 415         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 416
 417         claim_bolt12_payment(david, &[charlie, bob, alice]);
 418         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 419 }
 420
 421 /// Checks that a refund can be paid through blinded paths and that ephemeral pubkeys are used
 422 /// rather than exposing a node's pubkey.
 423 #[test]
 424 fn creates_and_pays_for_refund_using_two_hop_blinded_path() {
 425         let mut accept_forward_cfg = test_default_channel_config();
 426         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 427
 428         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 429         features.set_onion_messages_optional();
 430         features.set_route_blinding_optional();
 431
 432         let chanmon_cfgs = create_chanmon_cfgs(6);
 433         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 434
 435         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 436
 437         let node_chanmgrs = create_node_chanmgrs(
 438                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 439         );
 440         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 441
 442         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 443         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 444         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 445         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 446         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 447         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 448         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 449
 450         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 451         let alice_id = alice.node.get_our_node_id();
 452         let bob_id = bob.node.get_our_node_id();
 453         let charlie_id = charlie.node.get_our_node_id();
 454         let david_id = david.node.get_our_node_id();
 455
 456         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 457         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 458
 459         let absolute_expiry = Duration::from_secs(u64::MAX);
 460         let payment_id = PaymentId([1; 32]);
 461         let refund = david.node
 462                 .create_refund_builder(
 463                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 464                 )
 465                 .unwrap()
 466                 .build().unwrap();
 467         assert_eq!(refund.amount_msats(), 10_000_000);
 468         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 469         assert_ne!(refund.payer_id(), david_id);
 470         assert!(!refund.paths().is_empty());
 471         for path in refund.paths() {
 472                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 473         }
 474         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 475
 476         alice.node.request_refund_payment(&refund).unwrap();
 477
 478         connect_peers(alice, charlie);
 479
 480         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 481         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 482
 483         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 484         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 485
 486         let invoice = extract_invoice(david, &onion_message);
 487         assert_eq!(invoice.amount_msats(), 10_000_000);
 488         assert_ne!(invoice.signing_pubkey(), alice_id);
 489         assert!(!invoice.payment_paths().is_empty());
 490         for (_, path) in invoice.payment_paths() {
 491                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 492         }
 493
 494         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 495         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 496
 497         claim_bolt12_payment(david, &[charlie, bob, alice]);
 498         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 499 }
 500
 501 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 502 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 503 /// introduction node of the blinded path.
 504 #[test]
 505 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 506         let chanmon_cfgs = create_chanmon_cfgs(2);
 507         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 508         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 509         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 510
 511         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 512
 513         let alice = &nodes[0];
 514         let alice_id = alice.node.get_our_node_id();
 515         let bob = &nodes[1];
 516         let bob_id = bob.node.get_our_node_id();
 517
 518         let offer = alice.node
 519                 .create_offer_builder("coffee".to_string()).unwrap()
 520                 .amount_msats(10_000_000)
 521                 .build().unwrap();
 522         assert_ne!(offer.signing_pubkey(), alice_id);
 523         assert!(!offer.paths().is_empty());
 524         for path in offer.paths() {
 525                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 526         }
 527
 528         let payment_id = PaymentId([1; 32]);
 529         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 530         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 531
 532         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 533         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 534
 535         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 536         assert_eq!(invoice_request.amount_msats(), None);
 537         assert_ne!(invoice_request.payer_id(), bob_id);
 538         assert_eq!(reply_path.unwrap().introduction_node, IntroductionNode::NodeId(bob_id));
 539
 540         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 541         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 542
 543         let invoice = extract_invoice(bob, &onion_message);
 544         assert_eq!(invoice.amount_msats(), 10_000_000);
 545         assert_ne!(invoice.signing_pubkey(), alice_id);
 546         assert!(!invoice.payment_paths().is_empty());
 547         for (_, path) in invoice.payment_paths() {
 548                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 549         }
 550
 551         route_bolt12_payment(bob, &[alice], &invoice);
 552         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 553
 554         claim_bolt12_payment(bob, &[alice]);
 555         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 556 }
 557
 558 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 559 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 560 /// introduction node of the blinded path.
 561 #[test]
 562 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 563         let chanmon_cfgs = create_chanmon_cfgs(2);
 564         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 565         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 566         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 567
 568         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 569
 570         let alice = &nodes[0];
 571         let alice_id = alice.node.get_our_node_id();
 572         let bob = &nodes[1];
 573         let bob_id = bob.node.get_our_node_id();
 574
 575         let absolute_expiry = Duration::from_secs(u64::MAX);
 576         let payment_id = PaymentId([1; 32]);
 577         let refund = bob.node
 578                 .create_refund_builder(
 579                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 580                 )
 581                 .unwrap()
 582                 .build().unwrap();
 583         assert_eq!(refund.amount_msats(), 10_000_000);
 584         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 585         assert_ne!(refund.payer_id(), bob_id);
 586         assert!(!refund.paths().is_empty());
 587         for path in refund.paths() {
 588                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 589         }
 590         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 591
 592         alice.node.request_refund_payment(&refund).unwrap();
 593
 594         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 595         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 596
 597         let invoice = extract_invoice(bob, &onion_message);
 598         assert_eq!(invoice.amount_msats(), 10_000_000);
 599         assert_ne!(invoice.signing_pubkey(), alice_id);
 600         assert!(!invoice.payment_paths().is_empty());
 601         for (_, path) in invoice.payment_paths() {
 602                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 603         }
 604
 605         route_bolt12_payment(bob, &[alice], &invoice);
 606         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 607
 608         claim_bolt12_payment(bob, &[alice]);
 609         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 610 }
 611
 612 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 613 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 614 /// blinded paths as required by the spec.
 615 #[test]
 616 fn pays_for_offer_without_blinded_paths() {
 617         let chanmon_cfgs = create_chanmon_cfgs(2);
 618         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 619         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 620         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 621
 622         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 623
 624         let alice = &nodes[0];
 625         let alice_id = alice.node.get_our_node_id();
 626         let bob = &nodes[1];
 627         let bob_id = bob.node.get_our_node_id();
 628
 629         let offer = alice.node
 630                 .create_offer_builder("coffee".to_string()).unwrap()
 631                 .clear_paths()
 632                 .amount_msats(10_000_000)
 633                 .build().unwrap();
 634         assert_eq!(offer.signing_pubkey(), alice_id);
 635         assert!(offer.paths().is_empty());
 636
 637         let payment_id = PaymentId([1; 32]);
 638         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 639         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 640
 641         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 642         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 643
 644         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 645         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 646
 647         let invoice = extract_invoice(bob, &onion_message);
 648         route_bolt12_payment(bob, &[alice], &invoice);
 649         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 650
 651         claim_bolt12_payment(bob, &[alice]);
 652         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 653 }
 654
 655 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 656 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 657 #[test]
 658 fn pays_for_refund_without_blinded_paths() {
 659         let chanmon_cfgs = create_chanmon_cfgs(2);
 660         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 661         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 662         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 663
 664         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 665
 666         let alice = &nodes[0];
 667         let alice_id = alice.node.get_our_node_id();
 668         let bob = &nodes[1];
 669         let bob_id = bob.node.get_our_node_id();
 670
 671         let absolute_expiry = Duration::from_secs(u64::MAX);
 672         let payment_id = PaymentId([1; 32]);
 673         let refund = bob.node
 674                 .create_refund_builder(
 675                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 676                 )
 677                 .unwrap()
 678                 .clear_paths()
 679                 .build().unwrap();
 680         assert_eq!(refund.payer_id(), bob_id);
 681         assert!(refund.paths().is_empty());
 682         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 683
 684         alice.node.request_refund_payment(&refund).unwrap();
 685
 686         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 687         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 688
 689         let invoice = extract_invoice(bob, &onion_message);
 690         route_bolt12_payment(bob, &[alice], &invoice);
 691         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 692
 693         claim_bolt12_payment(bob, &[alice]);
 694         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 695 }
 696
 697 /// Fails creating an offer when a blinded path cannot be created without exposing the node's id.
 698 #[test]
 699 fn fails_creating_offer_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         match nodes[0].node.create_offer_builder("coffee".to_string()) {
 708                 Ok(_) => panic!("Expected error"),
 709                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 710         }
 711 }
 712
 713 /// Fails creating a refund when a blinded path cannot be created without exposing the node's id.
 714 #[test]
 715 fn fails_creating_refund_without_blinded_paths() {
 716         let chanmon_cfgs = create_chanmon_cfgs(2);
 717         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 718         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 719         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 720
 721         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 722
 723         let absolute_expiry = Duration::from_secs(u64::MAX);
 724         let payment_id = PaymentId([1; 32]);
 725
 726         match nodes[0].node.create_refund_builder(
 727                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 728         ) {
 729                 Ok(_) => panic!("Expected error"),
 730                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 731         }
 732
 733         assert!(nodes[0].node.list_recent_payments().is_empty());
 734 }
 735
 736 /// Fails creating an invoice request when the offer contains an unsupported chain.
 737 #[test]
 738 fn fails_creating_invoice_request_for_unsupported_chain() {
 739         let chanmon_cfgs = create_chanmon_cfgs(2);
 740         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 741         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 742         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 743
 744         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 745
 746         let alice = &nodes[0];
 747         let bob = &nodes[1];
 748
 749         let offer = alice.node
 750                 .create_offer_builder("coffee".to_string()).unwrap()
 751                 .clear_chains()
 752                 .chain(Network::Signet)
 753                 .build().unwrap();
 754
 755         let payment_id = PaymentId([1; 32]);
 756         match bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 757                 Ok(_) => panic!("Expected error"),
 758                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 759         }
 760 }
 761
 762 /// Fails requesting a payment when the refund contains an unsupported chain.
 763 #[test]
 764 fn fails_sending_invoice_with_unsupported_chain_for_refund() {
 765         let chanmon_cfgs = create_chanmon_cfgs(2);
 766         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 767         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 768         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 769
 770         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 771
 772         let alice = &nodes[0];
 773         let bob = &nodes[1];
 774
 775         let absolute_expiry = Duration::from_secs(u64::MAX);
 776         let payment_id = PaymentId([1; 32]);
 777         let refund = bob.node
 778                 .create_refund_builder(
 779                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 780                 )
 781                 .unwrap()
 782                 .chain(Network::Signet)
 783                 .build().unwrap();
 784
 785         match alice.node.request_refund_payment(&refund) {
 786                 Ok(_) => panic!("Expected error"),
 787                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 788         }
 789 }
 790
 791 /// Fails creating an invoice request when a blinded reply path cannot be created without exposing
 792 /// the node's id.
 793 #[test]
 794 fn fails_creating_invoice_request_without_blinded_reply_path() {
 795         let chanmon_cfgs = create_chanmon_cfgs(6);
 796         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 797         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 798         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 799
 800         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 801         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 802         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 803         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 804         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 805
 806         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 807
 808         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 809         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 810
 811         let offer = alice.node
 812                 .create_offer_builder("coffee".to_string()).unwrap()
 813                 .amount_msats(10_000_000)
 814                 .build().unwrap();
 815
 816         let payment_id = PaymentId([1; 32]);
 817
 818         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 819                 Ok(_) => panic!("Expected error"),
 820                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 821         }
 822
 823         assert!(nodes[0].node.list_recent_payments().is_empty());
 824 }
 825
 826 #[test]
 827 fn fails_creating_invoice_request_with_duplicate_payment_id() {
 828         let chanmon_cfgs = create_chanmon_cfgs(6);
 829         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 830         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 831         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 832
 833         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 834         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 835         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 836         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 837         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 838         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 839         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 840
 841         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 842
 843         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 844
 845         let offer = alice.node
 846                 .create_offer_builder("coffee".to_string()).unwrap()
 847                 .amount_msats(10_000_000)
 848                 .build().unwrap();
 849
 850         let payment_id = PaymentId([1; 32]);
 851         assert!(
 852                 david.node.pay_for_offer(
 853                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
 854                 ).is_ok()
 855         );
 856         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 857
 858         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 859                 Ok(_) => panic!("Expected error"),
 860                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 861         }
 862
 863         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 864 }
 865
 866 #[test]
 867 fn fails_creating_refund_with_duplicate_payment_id() {
 868         let chanmon_cfgs = create_chanmon_cfgs(2);
 869         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 870         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 871         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 872
 873         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 874
 875         let absolute_expiry = Duration::from_secs(u64::MAX);
 876         let payment_id = PaymentId([1; 32]);
 877         assert!(
 878                 nodes[0].node.create_refund_builder(
 879                         "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 880                 ).is_ok()
 881         );
 882         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 883
 884         match nodes[0].node.create_refund_builder(
 885                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 886         ) {
 887                 Ok(_) => panic!("Expected error"),
 888                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 889         }
 890
 891         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 892 }
 893
 894 #[test]
 895 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
 896         let mut accept_forward_cfg = test_default_channel_config();
 897         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 898
 899         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 900         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 901         features.set_onion_messages_optional();
 902         features.clear_route_blinding();
 903
 904         let chanmon_cfgs = create_chanmon_cfgs(6);
 905         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 906
 907         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 908
 909         let node_chanmgrs = create_node_chanmgrs(
 910                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 911         );
 912         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 913
 914         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 915         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 916         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 917         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 918         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 919         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 920         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 921
 922         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 923         let alice_id = alice.node.get_our_node_id();
 924         let bob_id = bob.node.get_our_node_id();
 925         let charlie_id = charlie.node.get_our_node_id();
 926         let david_id = david.node.get_our_node_id();
 927
 928         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 929         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 930
 931         let offer = alice.node
 932                 .create_offer_builder("coffee".to_string()).unwrap()
 933                 .amount_msats(10_000_000)
 934                 .build().unwrap();
 935
 936         let payment_id = PaymentId([1; 32]);
 937         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 938                 .unwrap();
 939
 940         connect_peers(david, bob);
 941
 942         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 943         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 944
 945         connect_peers(alice, charlie);
 946
 947         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 948         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 949
 950         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 951         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 952
 953         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 954         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 955
 956         let invoice_error = extract_invoice_error(david, &onion_message);
 957         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
 958 }
 959
 960 #[test]
 961 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
 962         let mut accept_forward_cfg = test_default_channel_config();
 963         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 964
 965         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 966         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 967         features.set_onion_messages_optional();
 968         features.clear_route_blinding();
 969
 970         let chanmon_cfgs = create_chanmon_cfgs(6);
 971         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 972
 973         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 974
 975         let node_chanmgrs = create_node_chanmgrs(
 976                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 977         );
 978         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 979
 980         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 981         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 982         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 983         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 984         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 985         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 986         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 987
 988         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 989
 990         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 991         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 992
 993         let absolute_expiry = Duration::from_secs(u64::MAX);
 994         let payment_id = PaymentId([1; 32]);
 995         let refund = david.node
 996                 .create_refund_builder(
 997                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 998                 )
 999                 .unwrap()
1000                 .build().unwrap();
1001
1002         match alice.node.request_refund_payment(&refund) {
1003                 Ok(_) => panic!("Expected error"),
1004                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1005         }
1006 }
1007
1008 #[test]
1009 fn fails_paying_invoice_more_than_once() {
1010         let mut accept_forward_cfg = test_default_channel_config();
1011         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1012
1013         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1014         features.set_onion_messages_optional();
1015         features.set_route_blinding_optional();
1016
1017         let chanmon_cfgs = create_chanmon_cfgs(6);
1018         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1019
1020         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1021
1022         let node_chanmgrs = create_node_chanmgrs(
1023                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1024         );
1025         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1026
1027         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1028         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1029         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1030         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1031         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1032         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1033         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1034
1035         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1036         let alice_id = alice.node.get_our_node_id();
1037         let bob_id = bob.node.get_our_node_id();
1038         let charlie_id = charlie.node.get_our_node_id();
1039         let david_id = david.node.get_our_node_id();
1040
1041         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1042         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1043
1044         let absolute_expiry = Duration::from_secs(u64::MAX);
1045         let payment_id = PaymentId([1; 32]);
1046         let refund = david.node
1047                 .create_refund_builder(
1048                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1049                 )
1050                 .unwrap()
1051                 .build().unwrap();
1052         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1053
1054         // Alice sends the first invoice
1055         alice.node.request_refund_payment(&refund).unwrap();
1056
1057         connect_peers(alice, charlie);
1058
1059         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1060         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1061
1062         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1063         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1064
1065         // David pays the first invoice
1066         let invoice1 = extract_invoice(david, &onion_message);
1067
1068         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
1069         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
1070
1071         claim_bolt12_payment(david, &[charlie, bob, alice]);
1072         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1073
1074         disconnect_peers(alice, &[charlie]);
1075
1076         // Alice sends the second invoice
1077         alice.node.request_refund_payment(&refund).unwrap();
1078
1079         connect_peers(alice, charlie);
1080         connect_peers(david, bob);
1081
1082         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1083         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1084
1085         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1086         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1087
1088         let invoice2 = extract_invoice(david, &onion_message);
1089         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1090
1091         // David sends an error instead of paying the second invoice
1092         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1093         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1094
1095         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1096         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1097
1098         let invoice_error = extract_invoice_error(alice, &onion_message);
1099         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1100 }