_ 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};
  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 { purpose, .. } => match purpose.preimage() {
 158                         Some(payment_preimage) => claim_payment(node, path, payment_preimage),
 159                         None => panic!("No preimage in Event::PaymentClaimable"),
 160                 },
 161                 _ => panic!("No Event::PaymentClaimable"),
 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.clone());
 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, IntroductionNode::NodeId(bob_id));
 263                 assert_ne!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 264         }
 265
 266         // Use a one-hop blinded path when Bob is announced and all his peers are Tor-only.
 267         announce_node_address(&nodes[4], &[alice, bob, charlie, david, &nodes[5]], tor.clone());
 268         announce_node_address(&nodes[5], &[alice, bob, charlie, david, &nodes[4]], tor.clone());
 269
 270         let offer = bob.node
 271                 .create_offer_builder("coffee".to_string()).unwrap()
 272                 .amount_msats(10_000_000)
 273                 .build().unwrap();
 274         assert_ne!(offer.signing_pubkey(), bob_id);
 275         assert!(!offer.paths().is_empty());
 276         for path in offer.paths() {
 277                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 278         }
 279 }
 280
 281 /// Checks that blinded paths prefer an introduction node that is the most connected.
 282 #[test]
 283 fn prefers_more_connected_nodes_in_blinded_paths() {
 284         let mut accept_forward_cfg = test_default_channel_config();
 285         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 286
 287         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 288         features.set_onion_messages_optional();
 289         features.set_route_blinding_optional();
 290
 291         let chanmon_cfgs = create_chanmon_cfgs(6);
 292         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 293
 294         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 295
 296         let node_chanmgrs = create_node_chanmgrs(
 297                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 298         );
 299         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 300
 301         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 302         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 303         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 304         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 305         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 306         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 307         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 308
 309         // Add extra channels so that more than one of Bob's peers have MIN_PEER_CHANNELS and one has
 310         // more than the others.
 311         create_announced_chan_between_nodes_with_value(&nodes, 0, 4, 10_000_000, 1_000_000_000);
 312         create_announced_chan_between_nodes_with_value(&nodes, 3, 4, 10_000_000, 1_000_000_000);
 313
 314         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 315         let bob_id = bob.node.get_our_node_id();
 316
 317         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 318         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 319
 320         let offer = bob.node
 321                 .create_offer_builder("coffee".to_string()).unwrap()
 322                 .amount_msats(10_000_000)
 323                 .build().unwrap();
 324         assert_ne!(offer.signing_pubkey(), bob_id);
 325         assert!(!offer.paths().is_empty());
 326         for path in offer.paths() {
 327                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(nodes[4].node.get_our_node_id()));
 328         }
 329 }
 330
 331 /// Checks that an offer can be paid through blinded paths and that ephemeral pubkeys are used
 332 /// rather than exposing a node's pubkey.
 333 #[test]
 334 fn creates_and_pays_for_offer_using_two_hop_blinded_path() {
 335         let mut accept_forward_cfg = test_default_channel_config();
 336         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 337
 338         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 339         features.set_onion_messages_optional();
 340         features.set_route_blinding_optional();
 341
 342         let chanmon_cfgs = create_chanmon_cfgs(6);
 343         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 344
 345         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 346
 347         let node_chanmgrs = create_node_chanmgrs(
 348                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 349         );
 350         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 351
 352         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 353         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 354         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 355         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 356         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 357         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 358         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 359
 360         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 361         let alice_id = alice.node.get_our_node_id();
 362         let bob_id = bob.node.get_our_node_id();
 363         let charlie_id = charlie.node.get_our_node_id();
 364         let david_id = david.node.get_our_node_id();
 365
 366         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 367         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 368
 369         let offer = alice.node
 370                 .create_offer_builder("coffee".to_string()).unwrap()
 371                 .amount_msats(10_000_000)
 372                 .build().unwrap();
 373         assert_ne!(offer.signing_pubkey(), alice_id);
 374         assert!(!offer.paths().is_empty());
 375         for path in offer.paths() {
 376                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 377         }
 378
 379         let payment_id = PaymentId([1; 32]);
 380         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 381                 .unwrap();
 382         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 383
 384         connect_peers(david, bob);
 385
 386         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 387         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 388
 389         connect_peers(alice, charlie);
 390
 391         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 392         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 393
 394         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 395         assert_eq!(invoice_request.amount_msats(), None);
 396         assert_ne!(invoice_request.payer_id(), david_id);
 397         assert_eq!(reply_path.unwrap().introduction_node, IntroductionNode::NodeId(charlie_id));
 398
 399         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 400         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 401
 402         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 403         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 404
 405         let invoice = extract_invoice(david, &onion_message);
 406         assert_eq!(invoice.amount_msats(), 10_000_000);
 407         assert_ne!(invoice.signing_pubkey(), alice_id);
 408         assert!(!invoice.payment_paths().is_empty());
 409         for (_, path) in invoice.payment_paths() {
 410                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 411         }
 412
 413         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 414         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 415
 416         claim_bolt12_payment(david, &[charlie, bob, alice]);
 417         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 418 }
 419
 420 /// Checks that a refund can be paid through blinded paths and that ephemeral pubkeys are used
 421 /// rather than exposing a node's pubkey.
 422 #[test]
 423 fn creates_and_pays_for_refund_using_two_hop_blinded_path() {
 424         let mut accept_forward_cfg = test_default_channel_config();
 425         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 426
 427         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 428         features.set_onion_messages_optional();
 429         features.set_route_blinding_optional();
 430
 431         let chanmon_cfgs = create_chanmon_cfgs(6);
 432         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 433
 434         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 435
 436         let node_chanmgrs = create_node_chanmgrs(
 437                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 438         );
 439         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 440
 441         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 442         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 443         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 444         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 445         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 446         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 447         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 448
 449         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 450         let alice_id = alice.node.get_our_node_id();
 451         let bob_id = bob.node.get_our_node_id();
 452         let charlie_id = charlie.node.get_our_node_id();
 453         let david_id = david.node.get_our_node_id();
 454
 455         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 456         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 457
 458         let absolute_expiry = Duration::from_secs(u64::MAX);
 459         let payment_id = PaymentId([1; 32]);
 460         let refund = david.node
 461                 .create_refund_builder(
 462                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 463                 )
 464                 .unwrap()
 465                 .build().unwrap();
 466         assert_eq!(refund.amount_msats(), 10_000_000);
 467         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 468         assert_ne!(refund.payer_id(), david_id);
 469         assert!(!refund.paths().is_empty());
 470         for path in refund.paths() {
 471                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 472         }
 473         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 474
 475         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 476
 477         connect_peers(alice, charlie);
 478
 479         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 480         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 481
 482         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 483         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 484
 485         let invoice = extract_invoice(david, &onion_message);
 486         assert_eq!(invoice, expected_invoice);
 487
 488         assert_eq!(invoice.amount_msats(), 10_000_000);
 489         assert_ne!(invoice.signing_pubkey(), alice_id);
 490         assert!(!invoice.payment_paths().is_empty());
 491         for (_, path) in invoice.payment_paths() {
 492                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 493         }
 494
 495         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 496         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 497
 498         claim_bolt12_payment(david, &[charlie, bob, alice]);
 499         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 500 }
 501
 502 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 503 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 504 /// introduction node of the blinded path.
 505 #[test]
 506 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 507         let chanmon_cfgs = create_chanmon_cfgs(2);
 508         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 509         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 510         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 511
 512         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 513
 514         let alice = &nodes[0];
 515         let alice_id = alice.node.get_our_node_id();
 516         let bob = &nodes[1];
 517         let bob_id = bob.node.get_our_node_id();
 518
 519         let offer = alice.node
 520                 .create_offer_builder("coffee".to_string()).unwrap()
 521                 .amount_msats(10_000_000)
 522                 .build().unwrap();
 523         assert_ne!(offer.signing_pubkey(), alice_id);
 524         assert!(!offer.paths().is_empty());
 525         for path in offer.paths() {
 526                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 527         }
 528
 529         let payment_id = PaymentId([1; 32]);
 530         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 531         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 532
 533         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 534         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 535
 536         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 537         assert_eq!(invoice_request.amount_msats(), None);
 538         assert_ne!(invoice_request.payer_id(), bob_id);
 539         assert_eq!(reply_path.unwrap().introduction_node, IntroductionNode::NodeId(bob_id));
 540
 541         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 542         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 543
 544         let invoice = extract_invoice(bob, &onion_message);
 545         assert_eq!(invoice.amount_msats(), 10_000_000);
 546         assert_ne!(invoice.signing_pubkey(), alice_id);
 547         assert!(!invoice.payment_paths().is_empty());
 548         for (_, path) in invoice.payment_paths() {
 549                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 550         }
 551
 552         route_bolt12_payment(bob, &[alice], &invoice);
 553         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 554
 555         claim_bolt12_payment(bob, &[alice]);
 556         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 557 }
 558
 559 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 560 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 561 /// introduction node of the blinded path.
 562 #[test]
 563 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 564         let chanmon_cfgs = create_chanmon_cfgs(2);
 565         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 566         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 567         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 568
 569         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 570
 571         let alice = &nodes[0];
 572         let alice_id = alice.node.get_our_node_id();
 573         let bob = &nodes[1];
 574         let bob_id = bob.node.get_our_node_id();
 575
 576         let absolute_expiry = Duration::from_secs(u64::MAX);
 577         let payment_id = PaymentId([1; 32]);
 578         let refund = bob.node
 579                 .create_refund_builder(
 580                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 581                 )
 582                 .unwrap()
 583                 .build().unwrap();
 584         assert_eq!(refund.amount_msats(), 10_000_000);
 585         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 586         assert_ne!(refund.payer_id(), bob_id);
 587         assert!(!refund.paths().is_empty());
 588         for path in refund.paths() {
 589                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 590         }
 591         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 592
 593         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 594
 595         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 596         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 597
 598         let invoice = extract_invoice(bob, &onion_message);
 599         assert_eq!(invoice, expected_invoice);
 600
 601         assert_eq!(invoice.amount_msats(), 10_000_000);
 602         assert_ne!(invoice.signing_pubkey(), alice_id);
 603         assert!(!invoice.payment_paths().is_empty());
 604         for (_, path) in invoice.payment_paths() {
 605                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 606         }
 607
 608         route_bolt12_payment(bob, &[alice], &invoice);
 609         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 610
 611         claim_bolt12_payment(bob, &[alice]);
 612         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 613 }
 614
 615 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 616 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 617 /// blinded paths as required by the spec.
 618 #[test]
 619 fn pays_for_offer_without_blinded_paths() {
 620         let chanmon_cfgs = create_chanmon_cfgs(2);
 621         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 622         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 623         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 624
 625         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 626
 627         let alice = &nodes[0];
 628         let alice_id = alice.node.get_our_node_id();
 629         let bob = &nodes[1];
 630         let bob_id = bob.node.get_our_node_id();
 631
 632         let offer = alice.node
 633                 .create_offer_builder("coffee".to_string()).unwrap()
 634                 .clear_paths()
 635                 .amount_msats(10_000_000)
 636                 .build().unwrap();
 637         assert_eq!(offer.signing_pubkey(), alice_id);
 638         assert!(offer.paths().is_empty());
 639
 640         let payment_id = PaymentId([1; 32]);
 641         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 642         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 643
 644         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 645         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 646
 647         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 648         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 649
 650         let invoice = extract_invoice(bob, &onion_message);
 651         route_bolt12_payment(bob, &[alice], &invoice);
 652         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 653
 654         claim_bolt12_payment(bob, &[alice]);
 655         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 656 }
 657
 658 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 659 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 660 #[test]
 661 fn pays_for_refund_without_blinded_paths() {
 662         let chanmon_cfgs = create_chanmon_cfgs(2);
 663         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 664         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 665         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 666
 667         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 668
 669         let alice = &nodes[0];
 670         let alice_id = alice.node.get_our_node_id();
 671         let bob = &nodes[1];
 672         let bob_id = bob.node.get_our_node_id();
 673
 674         let absolute_expiry = Duration::from_secs(u64::MAX);
 675         let payment_id = PaymentId([1; 32]);
 676         let refund = bob.node
 677                 .create_refund_builder(
 678                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 679                 )
 680                 .unwrap()
 681                 .clear_paths()
 682                 .build().unwrap();
 683         assert_eq!(refund.payer_id(), bob_id);
 684         assert!(refund.paths().is_empty());
 685         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 686
 687         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 688
 689         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 690         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 691
 692         let invoice = extract_invoice(bob, &onion_message);
 693         assert_eq!(invoice, expected_invoice);
 694
 695         route_bolt12_payment(bob, &[alice], &invoice);
 696         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 697
 698         claim_bolt12_payment(bob, &[alice]);
 699         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 700 }
 701
 702 /// Fails creating an offer when a blinded path cannot be created without exposing the node's id.
 703 #[test]
 704 fn fails_creating_offer_without_blinded_paths() {
 705         let chanmon_cfgs = create_chanmon_cfgs(2);
 706         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 707         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 708         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 709
 710         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 711
 712         match nodes[0].node.create_offer_builder("coffee".to_string()) {
 713                 Ok(_) => panic!("Expected error"),
 714                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 715         }
 716 }
 717
 718 /// Fails creating a refund when a blinded path cannot be created without exposing the node's id.
 719 #[test]
 720 fn fails_creating_refund_without_blinded_paths() {
 721         let chanmon_cfgs = create_chanmon_cfgs(2);
 722         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 723         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 724         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 725
 726         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 727
 728         let absolute_expiry = Duration::from_secs(u64::MAX);
 729         let payment_id = PaymentId([1; 32]);
 730
 731         match nodes[0].node.create_refund_builder(
 732                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 733         ) {
 734                 Ok(_) => panic!("Expected error"),
 735                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 736         }
 737
 738         assert!(nodes[0].node.list_recent_payments().is_empty());
 739 }
 740
 741 /// Fails creating an invoice request when the offer contains an unsupported chain.
 742 #[test]
 743 fn fails_creating_invoice_request_for_unsupported_chain() {
 744         let chanmon_cfgs = create_chanmon_cfgs(2);
 745         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 746         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 747         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 748
 749         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 750
 751         let alice = &nodes[0];
 752         let bob = &nodes[1];
 753
 754         let offer = alice.node
 755                 .create_offer_builder("coffee".to_string()).unwrap()
 756                 .clear_chains()
 757                 .chain(Network::Signet)
 758                 .build().unwrap();
 759
 760         let payment_id = PaymentId([1; 32]);
 761         match bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 762                 Ok(_) => panic!("Expected error"),
 763                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 764         }
 765 }
 766
 767 /// Fails requesting a payment when the refund contains an unsupported chain.
 768 #[test]
 769 fn fails_sending_invoice_with_unsupported_chain_for_refund() {
 770         let chanmon_cfgs = create_chanmon_cfgs(2);
 771         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 772         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 773         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 774
 775         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 776
 777         let alice = &nodes[0];
 778         let bob = &nodes[1];
 779
 780         let absolute_expiry = Duration::from_secs(u64::MAX);
 781         let payment_id = PaymentId([1; 32]);
 782         let refund = bob.node
 783                 .create_refund_builder(
 784                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 785                 )
 786                 .unwrap()
 787                 .chain(Network::Signet)
 788                 .build().unwrap();
 789
 790         match alice.node.request_refund_payment(&refund) {
 791                 Ok(_) => panic!("Expected error"),
 792                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 793         }
 794 }
 795
 796 /// Fails creating an invoice request when a blinded reply path cannot be created without exposing
 797 /// the node's id.
 798 #[test]
 799 fn fails_creating_invoice_request_without_blinded_reply_path() {
 800         let chanmon_cfgs = create_chanmon_cfgs(6);
 801         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 802         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 803         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 804
 805         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 806         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 807         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 808         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 809         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 810
 811         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 812
 813         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 814         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 815
 816         let offer = alice.node
 817                 .create_offer_builder("coffee".to_string()).unwrap()
 818                 .amount_msats(10_000_000)
 819                 .build().unwrap();
 820
 821         let payment_id = PaymentId([1; 32]);
 822
 823         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 824                 Ok(_) => panic!("Expected error"),
 825                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 826         }
 827
 828         assert!(nodes[0].node.list_recent_payments().is_empty());
 829 }
 830
 831 #[test]
 832 fn fails_creating_invoice_request_with_duplicate_payment_id() {
 833         let chanmon_cfgs = create_chanmon_cfgs(6);
 834         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 835         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 836         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 837
 838         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 839         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 840         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 841         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 842         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 843         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 844         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 845
 846         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 847
 848         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 849
 850         let offer = alice.node
 851                 .create_offer_builder("coffee".to_string()).unwrap()
 852                 .amount_msats(10_000_000)
 853                 .build().unwrap();
 854
 855         let payment_id = PaymentId([1; 32]);
 856         assert!(
 857                 david.node.pay_for_offer(
 858                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
 859                 ).is_ok()
 860         );
 861         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 862
 863         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 864                 Ok(_) => panic!("Expected error"),
 865                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 866         }
 867
 868         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 869 }
 870
 871 #[test]
 872 fn fails_creating_refund_with_duplicate_payment_id() {
 873         let chanmon_cfgs = create_chanmon_cfgs(2);
 874         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 875         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 876         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 877
 878         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 879
 880         let absolute_expiry = Duration::from_secs(u64::MAX);
 881         let payment_id = PaymentId([1; 32]);
 882         assert!(
 883                 nodes[0].node.create_refund_builder(
 884                         "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 885                 ).is_ok()
 886         );
 887         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 888
 889         match nodes[0].node.create_refund_builder(
 890                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 891         ) {
 892                 Ok(_) => panic!("Expected error"),
 893                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 894         }
 895
 896         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 897 }
 898
 899 #[test]
 900 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
 901         let mut accept_forward_cfg = test_default_channel_config();
 902         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 903
 904         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 905         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 906         features.set_onion_messages_optional();
 907         features.clear_route_blinding();
 908
 909         let chanmon_cfgs = create_chanmon_cfgs(6);
 910         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 911
 912         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 913
 914         let node_chanmgrs = create_node_chanmgrs(
 915                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 916         );
 917         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 918
 919         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 920         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 921         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 922         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 923         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 924         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 925         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 926
 927         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 928         let alice_id = alice.node.get_our_node_id();
 929         let bob_id = bob.node.get_our_node_id();
 930         let charlie_id = charlie.node.get_our_node_id();
 931         let david_id = david.node.get_our_node_id();
 932
 933         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 934         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 935
 936         let offer = alice.node
 937                 .create_offer_builder("coffee".to_string()).unwrap()
 938                 .amount_msats(10_000_000)
 939                 .build().unwrap();
 940
 941         let payment_id = PaymentId([1; 32]);
 942         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 943                 .unwrap();
 944
 945         connect_peers(david, bob);
 946
 947         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 948         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 949
 950         connect_peers(alice, charlie);
 951
 952         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 953         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 954
 955         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 956         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 957
 958         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 959         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 960
 961         let invoice_error = extract_invoice_error(david, &onion_message);
 962         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
 963 }
 964
 965 #[test]
 966 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
 967         let mut accept_forward_cfg = test_default_channel_config();
 968         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 969
 970         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 971         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 972         features.set_onion_messages_optional();
 973         features.clear_route_blinding();
 974
 975         let chanmon_cfgs = create_chanmon_cfgs(6);
 976         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 977
 978         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 979
 980         let node_chanmgrs = create_node_chanmgrs(
 981                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 982         );
 983         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 984
 985         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 986         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 987         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 988         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 989         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 990         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 991         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 992
 993         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 994
 995         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 996         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 997
 998         let absolute_expiry = Duration::from_secs(u64::MAX);
 999         let payment_id = PaymentId([1; 32]);
1000         let refund = david.node
1001                 .create_refund_builder(
1002                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1003                 )
1004                 .unwrap()
1005                 .build().unwrap();
1006
1007         match alice.node.request_refund_payment(&refund) {
1008                 Ok(_) => panic!("Expected error"),
1009                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1010         }
1011 }
1012
1013 #[test]
1014 fn fails_paying_invoice_more_than_once() {
1015         let mut accept_forward_cfg = test_default_channel_config();
1016         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1017
1018         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1019         features.set_onion_messages_optional();
1020         features.set_route_blinding_optional();
1021
1022         let chanmon_cfgs = create_chanmon_cfgs(6);
1023         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1024
1025         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1026
1027         let node_chanmgrs = create_node_chanmgrs(
1028                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1029         );
1030         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1031
1032         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1033         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1034         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1035         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1036         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1037         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1038         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1039
1040         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1041         let alice_id = alice.node.get_our_node_id();
1042         let bob_id = bob.node.get_our_node_id();
1043         let charlie_id = charlie.node.get_our_node_id();
1044         let david_id = david.node.get_our_node_id();
1045
1046         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1047         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1048
1049         let absolute_expiry = Duration::from_secs(u64::MAX);
1050         let payment_id = PaymentId([1; 32]);
1051         let refund = david.node
1052                 .create_refund_builder(
1053                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1054                 )
1055                 .unwrap()
1056                 .build().unwrap();
1057         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1058
1059         // Alice sends the first invoice
1060         alice.node.request_refund_payment(&refund).unwrap();
1061
1062         connect_peers(alice, charlie);
1063
1064         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1065         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1066
1067         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1068         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1069
1070         // David pays the first invoice
1071         let invoice1 = extract_invoice(david, &onion_message);
1072
1073         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
1074         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
1075
1076         claim_bolt12_payment(david, &[charlie, bob, alice]);
1077         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1078
1079         disconnect_peers(alice, &[charlie]);
1080
1081         // Alice sends the second invoice
1082         alice.node.request_refund_payment(&refund).unwrap();
1083
1084         connect_peers(alice, charlie);
1085         connect_peers(david, bob);
1086
1087         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1088         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1089
1090         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1091         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1092
1093         let invoice2 = extract_invoice(david, &onion_message);
1094         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1095
1096         // David sends an error instead of paying the second invoice
1097         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1098         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1099
1100         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1101         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1102
1103         let invoice_error = extract_invoice_error(alice, &onion_message);
1104         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1105 }