_ 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::Bolt11InvoicePayment {
 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         let expected_invoice = 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, expected_invoice);
 488
 489         assert_eq!(invoice.amount_msats(), 10_000_000);
 490         assert_ne!(invoice.signing_pubkey(), alice_id);
 491         assert!(!invoice.payment_paths().is_empty());
 492         for (_, path) in invoice.payment_paths() {
 493                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 494         }
 495
 496         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 497         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 498
 499         claim_bolt12_payment(david, &[charlie, bob, alice]);
 500         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 501 }
 502
 503 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 504 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 505 /// introduction node of the blinded path.
 506 #[test]
 507 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 508         let chanmon_cfgs = create_chanmon_cfgs(2);
 509         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 510         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 511         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 512
 513         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 514
 515         let alice = &nodes[0];
 516         let alice_id = alice.node.get_our_node_id();
 517         let bob = &nodes[1];
 518         let bob_id = bob.node.get_our_node_id();
 519
 520         let offer = alice.node
 521                 .create_offer_builder("coffee".to_string()).unwrap()
 522                 .amount_msats(10_000_000)
 523                 .build().unwrap();
 524         assert_ne!(offer.signing_pubkey(), alice_id);
 525         assert!(!offer.paths().is_empty());
 526         for path in offer.paths() {
 527                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 528         }
 529
 530         let payment_id = PaymentId([1; 32]);
 531         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 532         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 533
 534         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 535         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 536
 537         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 538         assert_eq!(invoice_request.amount_msats(), None);
 539         assert_ne!(invoice_request.payer_id(), bob_id);
 540         assert_eq!(reply_path.unwrap().introduction_node, IntroductionNode::NodeId(bob_id));
 541
 542         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 543         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 544
 545         let invoice = extract_invoice(bob, &onion_message);
 546         assert_eq!(invoice.amount_msats(), 10_000_000);
 547         assert_ne!(invoice.signing_pubkey(), alice_id);
 548         assert!(!invoice.payment_paths().is_empty());
 549         for (_, path) in invoice.payment_paths() {
 550                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 551         }
 552
 553         route_bolt12_payment(bob, &[alice], &invoice);
 554         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 555
 556         claim_bolt12_payment(bob, &[alice]);
 557         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 558 }
 559
 560 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 561 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 562 /// introduction node of the blinded path.
 563 #[test]
 564 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 565         let chanmon_cfgs = create_chanmon_cfgs(2);
 566         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 567         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 568         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 569
 570         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 571
 572         let alice = &nodes[0];
 573         let alice_id = alice.node.get_our_node_id();
 574         let bob = &nodes[1];
 575         let bob_id = bob.node.get_our_node_id();
 576
 577         let absolute_expiry = Duration::from_secs(u64::MAX);
 578         let payment_id = PaymentId([1; 32]);
 579         let refund = bob.node
 580                 .create_refund_builder(
 581                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 582                 )
 583                 .unwrap()
 584                 .build().unwrap();
 585         assert_eq!(refund.amount_msats(), 10_000_000);
 586         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 587         assert_ne!(refund.payer_id(), bob_id);
 588         assert!(!refund.paths().is_empty());
 589         for path in refund.paths() {
 590                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 591         }
 592         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 593
 594         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 595
 596         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 597         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 598
 599         let invoice = extract_invoice(bob, &onion_message);
 600         assert_eq!(invoice, expected_invoice);
 601
 602         assert_eq!(invoice.amount_msats(), 10_000_000);
 603         assert_ne!(invoice.signing_pubkey(), alice_id);
 604         assert!(!invoice.payment_paths().is_empty());
 605         for (_, path) in invoice.payment_paths() {
 606                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 607         }
 608
 609         route_bolt12_payment(bob, &[alice], &invoice);
 610         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 611
 612         claim_bolt12_payment(bob, &[alice]);
 613         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 614 }
 615
 616 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 617 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 618 /// blinded paths as required by the spec.
 619 #[test]
 620 fn pays_for_offer_without_blinded_paths() {
 621         let chanmon_cfgs = create_chanmon_cfgs(2);
 622         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 623         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 624         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 625
 626         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 627
 628         let alice = &nodes[0];
 629         let alice_id = alice.node.get_our_node_id();
 630         let bob = &nodes[1];
 631         let bob_id = bob.node.get_our_node_id();
 632
 633         let offer = alice.node
 634                 .create_offer_builder("coffee".to_string()).unwrap()
 635                 .clear_paths()
 636                 .amount_msats(10_000_000)
 637                 .build().unwrap();
 638         assert_eq!(offer.signing_pubkey(), alice_id);
 639         assert!(offer.paths().is_empty());
 640
 641         let payment_id = PaymentId([1; 32]);
 642         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 643         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 644
 645         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 646         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 647
 648         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 649         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 650
 651         let invoice = extract_invoice(bob, &onion_message);
 652         route_bolt12_payment(bob, &[alice], &invoice);
 653         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 654
 655         claim_bolt12_payment(bob, &[alice]);
 656         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 657 }
 658
 659 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 660 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 661 #[test]
 662 fn pays_for_refund_without_blinded_paths() {
 663         let chanmon_cfgs = create_chanmon_cfgs(2);
 664         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 665         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 666         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 667
 668         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 669
 670         let alice = &nodes[0];
 671         let alice_id = alice.node.get_our_node_id();
 672         let bob = &nodes[1];
 673         let bob_id = bob.node.get_our_node_id();
 674
 675         let absolute_expiry = Duration::from_secs(u64::MAX);
 676         let payment_id = PaymentId([1; 32]);
 677         let refund = bob.node
 678                 .create_refund_builder(
 679                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 680                 )
 681                 .unwrap()
 682                 .clear_paths()
 683                 .build().unwrap();
 684         assert_eq!(refund.payer_id(), bob_id);
 685         assert!(refund.paths().is_empty());
 686         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 687
 688         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 689
 690         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 691         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 692
 693         let invoice = extract_invoice(bob, &onion_message);
 694         assert_eq!(invoice, expected_invoice);
 695
 696         route_bolt12_payment(bob, &[alice], &invoice);
 697         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 698
 699         claim_bolt12_payment(bob, &[alice]);
 700         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 701 }
 702
 703 /// Fails creating an offer when a blinded path cannot be created without exposing the node's id.
 704 #[test]
 705 fn fails_creating_offer_without_blinded_paths() {
 706         let chanmon_cfgs = create_chanmon_cfgs(2);
 707         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 708         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 709         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 710
 711         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 712
 713         match nodes[0].node.create_offer_builder("coffee".to_string()) {
 714                 Ok(_) => panic!("Expected error"),
 715                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 716         }
 717 }
 718
 719 /// Fails creating a refund when a blinded path cannot be created without exposing the node's id.
 720 #[test]
 721 fn fails_creating_refund_without_blinded_paths() {
 722         let chanmon_cfgs = create_chanmon_cfgs(2);
 723         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 724         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 725         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 726
 727         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 728
 729         let absolute_expiry = Duration::from_secs(u64::MAX);
 730         let payment_id = PaymentId([1; 32]);
 731
 732         match nodes[0].node.create_refund_builder(
 733                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 734         ) {
 735                 Ok(_) => panic!("Expected error"),
 736                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 737         }
 738
 739         assert!(nodes[0].node.list_recent_payments().is_empty());
 740 }
 741
 742 /// Fails creating an invoice request when the offer contains an unsupported chain.
 743 #[test]
 744 fn fails_creating_invoice_request_for_unsupported_chain() {
 745         let chanmon_cfgs = create_chanmon_cfgs(2);
 746         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 747         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 748         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 749
 750         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 751
 752         let alice = &nodes[0];
 753         let bob = &nodes[1];
 754
 755         let offer = alice.node
 756                 .create_offer_builder("coffee".to_string()).unwrap()
 757                 .clear_chains()
 758                 .chain(Network::Signet)
 759                 .build().unwrap();
 760
 761         let payment_id = PaymentId([1; 32]);
 762         match bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 763                 Ok(_) => panic!("Expected error"),
 764                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 765         }
 766 }
 767
 768 /// Fails requesting a payment when the refund contains an unsupported chain.
 769 #[test]
 770 fn fails_sending_invoice_with_unsupported_chain_for_refund() {
 771         let chanmon_cfgs = create_chanmon_cfgs(2);
 772         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 773         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 774         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 775
 776         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 777
 778         let alice = &nodes[0];
 779         let bob = &nodes[1];
 780
 781         let absolute_expiry = Duration::from_secs(u64::MAX);
 782         let payment_id = PaymentId([1; 32]);
 783         let refund = bob.node
 784                 .create_refund_builder(
 785                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 786                 )
 787                 .unwrap()
 788                 .chain(Network::Signet)
 789                 .build().unwrap();
 790
 791         match alice.node.request_refund_payment(&refund) {
 792                 Ok(_) => panic!("Expected error"),
 793                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
 794         }
 795 }
 796
 797 /// Fails creating an invoice request when a blinded reply path cannot be created without exposing
 798 /// the node's id.
 799 #[test]
 800 fn fails_creating_invoice_request_without_blinded_reply_path() {
 801         let chanmon_cfgs = create_chanmon_cfgs(6);
 802         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 803         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 804         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 805
 806         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 807         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 808         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 809         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 810         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 811
 812         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 813
 814         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 815         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 816
 817         let offer = alice.node
 818                 .create_offer_builder("coffee".to_string()).unwrap()
 819                 .amount_msats(10_000_000)
 820                 .build().unwrap();
 821
 822         let payment_id = PaymentId([1; 32]);
 823
 824         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 825                 Ok(_) => panic!("Expected error"),
 826                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
 827         }
 828
 829         assert!(nodes[0].node.list_recent_payments().is_empty());
 830 }
 831
 832 #[test]
 833 fn fails_creating_invoice_request_with_duplicate_payment_id() {
 834         let chanmon_cfgs = create_chanmon_cfgs(6);
 835         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 836         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
 837         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 838
 839         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 840         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 841         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 842         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 843         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 844         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 845         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 846
 847         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 848
 849         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 850
 851         let offer = alice.node
 852                 .create_offer_builder("coffee".to_string()).unwrap()
 853                 .amount_msats(10_000_000)
 854                 .build().unwrap();
 855
 856         let payment_id = PaymentId([1; 32]);
 857         assert!(
 858                 david.node.pay_for_offer(
 859                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
 860                 ).is_ok()
 861         );
 862         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 863
 864         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
 865                 Ok(_) => panic!("Expected error"),
 866                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 867         }
 868
 869         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 870 }
 871
 872 #[test]
 873 fn fails_creating_refund_with_duplicate_payment_id() {
 874         let chanmon_cfgs = create_chanmon_cfgs(2);
 875         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 876         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 877         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 878
 879         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 880
 881         let absolute_expiry = Duration::from_secs(u64::MAX);
 882         let payment_id = PaymentId([1; 32]);
 883         assert!(
 884                 nodes[0].node.create_refund_builder(
 885                         "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 886                 ).is_ok()
 887         );
 888         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 889
 890         match nodes[0].node.create_refund_builder(
 891                 "refund".to_string(), 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
 892         ) {
 893                 Ok(_) => panic!("Expected error"),
 894                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
 895         }
 896
 897         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
 898 }
 899
 900 #[test]
 901 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
 902         let mut accept_forward_cfg = test_default_channel_config();
 903         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 904
 905         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 906         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 907         features.set_onion_messages_optional();
 908         features.clear_route_blinding();
 909
 910         let chanmon_cfgs = create_chanmon_cfgs(6);
 911         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 912
 913         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 914
 915         let node_chanmgrs = create_node_chanmgrs(
 916                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 917         );
 918         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 919
 920         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 921         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 922         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 923         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 924         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 925         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 926         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 927
 928         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 929         let alice_id = alice.node.get_our_node_id();
 930         let bob_id = bob.node.get_our_node_id();
 931         let charlie_id = charlie.node.get_our_node_id();
 932         let david_id = david.node.get_our_node_id();
 933
 934         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 935         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 936
 937         let offer = alice.node
 938                 .create_offer_builder("coffee".to_string()).unwrap()
 939                 .amount_msats(10_000_000)
 940                 .build().unwrap();
 941
 942         let payment_id = PaymentId([1; 32]);
 943         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 944                 .unwrap();
 945
 946         connect_peers(david, bob);
 947
 948         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 949         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 950
 951         connect_peers(alice, charlie);
 952
 953         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 954         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 955
 956         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 957         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 958
 959         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 960         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 961
 962         let invoice_error = extract_invoice_error(david, &onion_message);
 963         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
 964 }
 965
 966 #[test]
 967 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
 968         let mut accept_forward_cfg = test_default_channel_config();
 969         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 970
 971         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
 972         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 973         features.set_onion_messages_optional();
 974         features.clear_route_blinding();
 975
 976         let chanmon_cfgs = create_chanmon_cfgs(6);
 977         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 978
 979         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 980
 981         let node_chanmgrs = create_node_chanmgrs(
 982                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 983         );
 984         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 985
 986         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 987         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 988         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 989         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 990         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 991         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 992         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 993
 994         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 995
 996         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 997         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 998
 999         let absolute_expiry = Duration::from_secs(u64::MAX);
1000         let payment_id = PaymentId([1; 32]);
1001         let refund = david.node
1002                 .create_refund_builder(
1003                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1004                 )
1005                 .unwrap()
1006                 .build().unwrap();
1007
1008         match alice.node.request_refund_payment(&refund) {
1009                 Ok(_) => panic!("Expected error"),
1010                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1011         }
1012 }
1013
1014 #[test]
1015 fn fails_paying_invoice_more_than_once() {
1016         let mut accept_forward_cfg = test_default_channel_config();
1017         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1018
1019         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1020         features.set_onion_messages_optional();
1021         features.set_route_blinding_optional();
1022
1023         let chanmon_cfgs = create_chanmon_cfgs(6);
1024         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1025
1026         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1027
1028         let node_chanmgrs = create_node_chanmgrs(
1029                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1030         );
1031         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1032
1033         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1034         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1035         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1036         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1037         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1038         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1039         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1040
1041         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1042         let alice_id = alice.node.get_our_node_id();
1043         let bob_id = bob.node.get_our_node_id();
1044         let charlie_id = charlie.node.get_our_node_id();
1045         let david_id = david.node.get_our_node_id();
1046
1047         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1048         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1049
1050         let absolute_expiry = Duration::from_secs(u64::MAX);
1051         let payment_id = PaymentId([1; 32]);
1052         let refund = david.node
1053                 .create_refund_builder(
1054                         "refund".to_string(), 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1055                 )
1056                 .unwrap()
1057                 .build().unwrap();
1058         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1059
1060         // Alice sends the first invoice
1061         alice.node.request_refund_payment(&refund).unwrap();
1062
1063         connect_peers(alice, charlie);
1064
1065         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1066         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1067
1068         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1069         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1070
1071         // David pays the first invoice
1072         let invoice1 = extract_invoice(david, &onion_message);
1073
1074         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
1075         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
1076
1077         claim_bolt12_payment(david, &[charlie, bob, alice]);
1078         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1079
1080         disconnect_peers(alice, &[charlie]);
1081
1082         // Alice sends the second invoice
1083         alice.node.request_refund_payment(&refund).unwrap();
1084
1085         connect_peers(alice, charlie);
1086         connect_peers(david, bob);
1087
1088         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1089         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1090
1091         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1092         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1093
1094         let invoice2 = extract_invoice(david, &onion_message);
1095         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1096
1097         // David sends an error instead of paying the second invoice
1098         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1099         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1100
1101         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1102         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1103
1104         let invoice_error = extract_invoice_error(alice, &onion_message);
1105         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1106 }