_ 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::Network;
  44 use bitcoin::secp256k1::PublicKey;
  45 use core::time::Duration;
  46 use crate::blinded_path::{BlindedPath, IntroductionNode};
  47 use crate::blinded_path::payment::{Bolt12OfferContext, Bolt12RefundContext, PaymentContext};
  48 use crate::events::{Event, MessageSendEventsProvider, PaymentPurpose};
  49 use crate::ln::channelmanager::{Bolt12PaymentError, MAX_SHORT_LIVED_RELATIVE_EXPIRY, PaymentId, RecentPaymentDetails, Retry, self};
  50 use crate::ln::functional_test_utils::*;
  51 use crate::ln::msgs::{ChannelMessageHandler, Init, NodeAnnouncement, OnionMessage, OnionMessageHandler, RoutingMessageHandler, SocketAddress, UnsignedGossipMessage, UnsignedNodeAnnouncement};
  52 use crate::ln::outbound_payment::IDEMPOTENCY_TIMEOUT_TICKS;
  53 use crate::offers::invoice::Bolt12Invoice;
  54 use crate::offers::invoice_error::InvoiceError;
  55 use crate::offers::invoice_request::{InvoiceRequest, InvoiceRequestFields};
  56 use crate::offers::parse::Bolt12SemanticError;
  57 use crate::onion_message::messenger::PeeledOnion;
  58 use crate::onion_message::offers::OffersMessage;
  59 use crate::onion_message::packet::ParsedOnionMessageContents;
  60 use crate::routing::gossip::{NodeAlias, NodeId};
  61 use crate::sign::{NodeSigner, Recipient};
  62
  63 use crate::prelude::*;
  64
  65 macro_rules! expect_recent_payment {
  66         ($node: expr, $payment_state: path, $payment_id: expr) => {
  67                 match $node.node.list_recent_payments().first() {
  68                         Some(&$payment_state { payment_id: actual_payment_id, .. }) => {
  69                                 assert_eq!($payment_id, actual_payment_id);
  70                         },
  71                         Some(_) => panic!("Unexpected recent payment state"),
  72                         None => panic!("No recent payments"),
  73                 }
  74         }
  75 }
  76
  77 fn connect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, node_b: &Node<'a, 'b, 'c>) {
  78         let node_id_a = node_a.node.get_our_node_id();
  79         let node_id_b = node_b.node.get_our_node_id();
  80
  81         let init_a = Init {
  82                 features: node_a.init_features(&node_id_b),
  83                 networks: None,
  84                 remote_network_address: None,
  85         };
  86         let init_b = Init {
  87                 features: node_b.init_features(&node_id_a),
  88                 networks: None,
  89                 remote_network_address: None,
  90         };
  91
  92         node_a.node.peer_connected(&node_id_b, &init_b, true).unwrap();
  93         node_b.node.peer_connected(&node_id_a, &init_a, false).unwrap();
  94         node_a.onion_messenger.peer_connected(&node_id_b, &init_b, true).unwrap();
  95         node_b.onion_messenger.peer_connected(&node_id_a, &init_a, false).unwrap();
  96 }
  97
  98 fn disconnect_peers<'a, 'b, 'c>(node_a: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>]) {
  99         for node_b in peers {
 100                 node_a.node.peer_disconnected(&node_b.node.get_our_node_id());
 101                 node_b.node.peer_disconnected(&node_a.node.get_our_node_id());
 102                 node_a.onion_messenger.peer_disconnected(&node_b.node.get_our_node_id());
 103                 node_b.onion_messenger.peer_disconnected(&node_a.node.get_our_node_id());
 104         }
 105 }
 106
 107 fn announce_node_address<'a, 'b, 'c>(
 108         node: &Node<'a, 'b, 'c>, peers: &[&Node<'a, 'b, 'c>], address: SocketAddress,
 109 ) {
 110         let features = node.onion_messenger.provided_node_features()
 111                 | node.gossip_sync.provided_node_features();
 112         let rgb = [0u8; 3];
 113         let announcement = UnsignedNodeAnnouncement {
 114                 features,
 115                 timestamp: 1000,
 116                 node_id: NodeId::from_pubkey(&node.keys_manager.get_node_id(Recipient::Node).unwrap()),
 117                 rgb,
 118                 alias: NodeAlias([0u8; 32]),
 119                 addresses: vec![address],
 120                 excess_address_data: Vec::new(),
 121                 excess_data: Vec::new(),
 122         };
 123         let signature = node.keys_manager.sign_gossip_message(
 124                 UnsignedGossipMessage::NodeAnnouncement(&announcement)
 125         ).unwrap();
 126
 127         let msg = NodeAnnouncement {
 128                 signature,
 129                 contents: announcement
 130         };
 131
 132         node.gossip_sync.handle_node_announcement(&msg).unwrap();
 133         for peer in peers {
 134                 peer.gossip_sync.handle_node_announcement(&msg).unwrap();
 135         }
 136 }
 137
 138 fn resolve_introduction_node<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, path: &BlindedPath) -> PublicKey {
 139         path.public_introduction_node_id(&node.network_graph.read_only())
 140                 .and_then(|node_id| node_id.as_pubkey().ok())
 141                 .unwrap()
 142 }
 143
 144 fn route_bolt12_payment<'a, 'b, 'c>(
 145         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], invoice: &Bolt12Invoice
 146 ) {
 147         // Monitor added when handling the invoice onion message.
 148         check_added_monitors(node, 1);
 149
 150         let mut events = node.node.get_and_clear_pending_msg_events();
 151         assert_eq!(events.len(), 1);
 152         let ev = remove_first_msg_event_to_node(&path[0].node.get_our_node_id(), &mut events);
 153
 154         // Use a fake payment_hash and bypass checking for the PaymentClaimable event since the
 155         // invoice contains the payment_hash but it was encrypted inside an onion message.
 156         let amount_msats = invoice.amount_msats();
 157         let payment_hash = invoice.payment_hash();
 158         let args = PassAlongPathArgs::new(node, path, amount_msats, payment_hash, ev)
 159                 .without_clearing_recipient_events();
 160         do_pass_along_path(args);
 161 }
 162
 163 fn claim_bolt12_payment<'a, 'b, 'c>(
 164         node: &Node<'a, 'b, 'c>, path: &[&Node<'a, 'b, 'c>], expected_payment_context: PaymentContext
 165 ) {
 166         let recipient = &path[path.len() - 1];
 167         let payment_purpose = match get_event!(recipient, Event::PaymentClaimable) {
 168                 Event::PaymentClaimable { purpose, .. } => purpose,
 169                 _ => panic!("No Event::PaymentClaimable"),
 170         };
 171         let payment_preimage = match payment_purpose.preimage() {
 172                 Some(preimage) => preimage,
 173                 None => panic!("No preimage in Event::PaymentClaimable"),
 174         };
 175         match payment_purpose {
 176                 PaymentPurpose::Bolt12OfferPayment { payment_context, .. } => {
 177                         assert_eq!(PaymentContext::Bolt12Offer(payment_context), expected_payment_context);
 178                 },
 179                 PaymentPurpose::Bolt12RefundPayment { payment_context, .. } => {
 180                         assert_eq!(PaymentContext::Bolt12Refund(payment_context), expected_payment_context);
 181                 },
 182                 _ => panic!("Unexpected payment purpose: {:?}", payment_purpose),
 183         }
 184         claim_payment(node, path, payment_preimage);
 185 }
 186
 187 fn extract_invoice_request<'a, 'b, 'c>(
 188         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 189 ) -> (InvoiceRequest, BlindedPath) {
 190         match node.onion_messenger.peel_onion_message(message) {
 191                 Ok(PeeledOnion::Receive(message, _, reply_path)) => match message {
 192                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 193                                 OffersMessage::InvoiceRequest(invoice_request) => (invoice_request, reply_path.unwrap()),
 194                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 195                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 196                         },
 197                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 198                 },
 199                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 200                 Err(e) => panic!("Failed to process onion message {:?}", e),
 201         }
 202 }
 203
 204 fn extract_invoice<'a, 'b, 'c>(node: &Node<'a, 'b, 'c>, message: &OnionMessage) -> Bolt12Invoice {
 205         match node.onion_messenger.peel_onion_message(message) {
 206                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 207                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 208                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 209                                 OffersMessage::Invoice(invoice) => invoice,
 210                                 OffersMessage::InvoiceError(error) => panic!("Unexpected invoice_error: {:?}", error),
 211                         },
 212                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 213                 },
 214                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 215                 Err(e) => panic!("Failed to process onion message {:?}", e),
 216         }
 217 }
 218
 219 fn extract_invoice_error<'a, 'b, 'c>(
 220         node: &Node<'a, 'b, 'c>, message: &OnionMessage
 221 ) -> InvoiceError {
 222         match node.onion_messenger.peel_onion_message(message) {
 223                 Ok(PeeledOnion::Receive(message, _, _)) => match message {
 224                         ParsedOnionMessageContents::Offers(offers_message) => match offers_message {
 225                                 OffersMessage::InvoiceRequest(invoice_request) => panic!("Unexpected invoice_request: {:?}", invoice_request),
 226                                 OffersMessage::Invoice(invoice) => panic!("Unexpected invoice: {:?}", invoice),
 227                                 OffersMessage::InvoiceError(error) => error,
 228                         },
 229                         ParsedOnionMessageContents::Custom(message) => panic!("Unexpected custom message: {:?}", message),
 230                 },
 231                 Ok(PeeledOnion::Forward(_, _)) => panic!("Unexpected onion message forward"),
 232                 Err(e) => panic!("Failed to process onion message {:?}", e),
 233         }
 234 }
 235
 236 /// Checks that blinded paths without Tor-only nodes are preferred when constructing an offer.
 237 #[test]
 238 fn prefers_non_tor_nodes_in_blinded_paths() {
 239         let mut accept_forward_cfg = test_default_channel_config();
 240         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 241
 242         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 243         features.set_onion_messages_optional();
 244         features.set_route_blinding_optional();
 245
 246         let chanmon_cfgs = create_chanmon_cfgs(6);
 247         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 248
 249         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 250
 251         let node_chanmgrs = create_node_chanmgrs(
 252                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 253         );
 254         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 255
 256         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 257         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 258         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 259         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 260         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 261         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 262         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 263
 264         // Add an extra channel so that more than one of Bob's peers have MIN_PEER_CHANNELS.
 265         create_announced_chan_between_nodes_with_value(&nodes, 4, 5, 10_000_000, 1_000_000_000);
 266
 267         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 268         let bob_id = bob.node.get_our_node_id();
 269         let charlie_id = charlie.node.get_our_node_id();
 270
 271         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 272         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 273
 274         let tor = SocketAddress::OnionV2([255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 38, 7]);
 275         announce_node_address(charlie, &[alice, bob, david, &nodes[4], &nodes[5]], tor.clone());
 276
 277         let offer = bob.node
 278                 .create_offer_builder(None).unwrap()
 279                 .amount_msats(10_000_000)
 280                 .build().unwrap();
 281         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 282         assert!(!offer.paths().is_empty());
 283         for path in offer.paths() {
 284                 let introduction_node_id = resolve_introduction_node(david, &path);
 285                 assert_ne!(introduction_node_id, bob_id);
 286                 assert_ne!(introduction_node_id, charlie_id);
 287         }
 288
 289         // Use a one-hop blinded path when Bob is announced and all his peers are Tor-only.
 290         announce_node_address(&nodes[4], &[alice, bob, charlie, david, &nodes[5]], tor.clone());
 291         announce_node_address(&nodes[5], &[alice, bob, charlie, david, &nodes[4]], tor.clone());
 292
 293         let offer = bob.node
 294                 .create_offer_builder(None).unwrap()
 295                 .amount_msats(10_000_000)
 296                 .build().unwrap();
 297         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 298         assert!(!offer.paths().is_empty());
 299         for path in offer.paths() {
 300                 let introduction_node_id = resolve_introduction_node(david, &path);
 301                 assert_eq!(introduction_node_id, bob_id);
 302         }
 303 }
 304
 305 /// Checks that blinded paths prefer an introduction node that is the most connected.
 306 #[test]
 307 fn prefers_more_connected_nodes_in_blinded_paths() {
 308         let mut accept_forward_cfg = test_default_channel_config();
 309         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 310
 311         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 312         features.set_onion_messages_optional();
 313         features.set_route_blinding_optional();
 314
 315         let chanmon_cfgs = create_chanmon_cfgs(6);
 316         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 317
 318         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 319
 320         let node_chanmgrs = create_node_chanmgrs(
 321                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 322         );
 323         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 324
 325         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 326         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 327         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 328         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 329         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 330         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 331         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 332
 333         // Add extra channels so that more than one of Bob's peers have MIN_PEER_CHANNELS and one has
 334         // more than the others.
 335         create_announced_chan_between_nodes_with_value(&nodes, 0, 4, 10_000_000, 1_000_000_000);
 336         create_announced_chan_between_nodes_with_value(&nodes, 3, 4, 10_000_000, 1_000_000_000);
 337
 338         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 339         let bob_id = bob.node.get_our_node_id();
 340
 341         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 342         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 343
 344         let offer = bob.node
 345                 .create_offer_builder(None).unwrap()
 346                 .amount_msats(10_000_000)
 347                 .build().unwrap();
 348         assert_ne!(offer.signing_pubkey(), Some(bob_id));
 349         assert!(!offer.paths().is_empty());
 350         for path in offer.paths() {
 351                 let introduction_node_id = resolve_introduction_node(david, &path);
 352                 assert_eq!(introduction_node_id, nodes[4].node.get_our_node_id());
 353         }
 354 }
 355
 356 /// Checks that blinded paths are compact for short-lived offers.
 357 #[test]
 358 fn creates_short_lived_offer() {
 359         let chanmon_cfgs = create_chanmon_cfgs(2);
 360         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 361         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 362         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 363
 364         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 365
 366         let alice = &nodes[0];
 367         let alice_id = alice.node.get_our_node_id();
 368         let bob = &nodes[1];
 369
 370         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
 371         let offer = alice.node
 372                 .create_offer_builder(Some(absolute_expiry)).unwrap()
 373                 .build().unwrap();
 374         assert_eq!(offer.absolute_expiry(), Some(absolute_expiry));
 375         assert!(!offer.paths().is_empty());
 376         for path in offer.paths() {
 377                 let introduction_node_id = resolve_introduction_node(bob, &path);
 378                 assert_eq!(introduction_node_id, alice_id);
 379                 assert!(matches!(path.introduction_node, IntroductionNode::DirectedShortChannelId(..)));
 380         }
 381 }
 382
 383 /// Checks that blinded paths are not compact for long-lived offers.
 384 #[test]
 385 fn creates_long_lived_offer() {
 386         let chanmon_cfgs = create_chanmon_cfgs(2);
 387         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 388         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 389         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 390
 391         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 392
 393         let alice = &nodes[0];
 394         let alice_id = alice.node.get_our_node_id();
 395
 396         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY
 397                 + Duration::from_secs(1);
 398         let offer = alice.node
 399                 .create_offer_builder(Some(absolute_expiry))
 400                 .unwrap()
 401                 .build().unwrap();
 402         assert_eq!(offer.absolute_expiry(), Some(absolute_expiry));
 403         assert!(!offer.paths().is_empty());
 404         for path in offer.paths() {
 405                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 406         }
 407
 408         let offer = alice.node
 409                 .create_offer_builder(None).unwrap()
 410                 .build().unwrap();
 411         assert_eq!(offer.absolute_expiry(), None);
 412         assert!(!offer.paths().is_empty());
 413         for path in offer.paths() {
 414                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 415         }
 416 }
 417
 418 /// Checks that blinded paths are compact for short-lived refunds.
 419 #[test]
 420 fn creates_short_lived_refund() {
 421         let chanmon_cfgs = create_chanmon_cfgs(2);
 422         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 423         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 424         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 425
 426         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 427
 428         let alice = &nodes[0];
 429         let bob = &nodes[1];
 430         let bob_id = bob.node.get_our_node_id();
 431
 432         let absolute_expiry = bob.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
 433         let payment_id = PaymentId([1; 32]);
 434         let refund = bob.node
 435                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 436                 .unwrap()
 437                 .build().unwrap();
 438         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 439         assert!(!refund.paths().is_empty());
 440         for path in refund.paths() {
 441                 let introduction_node_id = resolve_introduction_node(alice, &path);
 442                 assert_eq!(introduction_node_id, bob_id);
 443                 assert!(matches!(path.introduction_node, IntroductionNode::DirectedShortChannelId(..)));
 444         }
 445 }
 446
 447 /// Checks that blinded paths are not compact for long-lived refunds.
 448 #[test]
 449 fn creates_long_lived_refund() {
 450         let chanmon_cfgs = create_chanmon_cfgs(2);
 451         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 452         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 453         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 454
 455         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 456
 457         let bob = &nodes[1];
 458         let bob_id = bob.node.get_our_node_id();
 459
 460         let absolute_expiry = bob.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY
 461                 + Duration::from_secs(1);
 462         let payment_id = PaymentId([1; 32]);
 463         let refund = bob.node
 464                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 465                 .unwrap()
 466                 .build().unwrap();
 467         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 468         assert!(!refund.paths().is_empty());
 469         for path in refund.paths() {
 470                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 471         }
 472 }
 473
 474 /// Checks that an offer can be paid through blinded paths and that ephemeral pubkeys are used
 475 /// rather than exposing a node's pubkey.
 476 #[test]
 477 fn creates_and_pays_for_offer_using_two_hop_blinded_path() {
 478         let mut accept_forward_cfg = test_default_channel_config();
 479         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 480
 481         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 482         features.set_onion_messages_optional();
 483         features.set_route_blinding_optional();
 484
 485         let chanmon_cfgs = create_chanmon_cfgs(6);
 486         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 487
 488         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 489
 490         let node_chanmgrs = create_node_chanmgrs(
 491                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 492         );
 493         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 494
 495         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 496         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 497         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 498         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 499         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 500         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 501         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 502
 503         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 504         let alice_id = alice.node.get_our_node_id();
 505         let bob_id = bob.node.get_our_node_id();
 506         let charlie_id = charlie.node.get_our_node_id();
 507         let david_id = david.node.get_our_node_id();
 508
 509         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 510         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 511
 512         let offer = alice.node
 513                 .create_offer_builder(None)
 514                 .unwrap()
 515                 .amount_msats(10_000_000)
 516                 .build().unwrap();
 517         assert_ne!(offer.signing_pubkey(), Some(alice_id));
 518         assert!(!offer.paths().is_empty());
 519         for path in offer.paths() {
 520                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 521         }
 522
 523         let payment_id = PaymentId([1; 32]);
 524         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
 525                 .unwrap();
 526         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 527
 528         connect_peers(david, bob);
 529
 530         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 531         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
 532
 533         connect_peers(alice, charlie);
 534
 535         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 536         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 537
 538         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 539         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 540                 offer_id: offer.id(),
 541                 invoice_request: InvoiceRequestFields {
 542                         payer_id: invoice_request.payer_id(),
 543                         quantity: None,
 544                         payer_note_truncated: None,
 545                 },
 546         });
 547         assert_eq!(invoice_request.amount_msats(), None);
 548         assert_ne!(invoice_request.payer_id(), david_id);
 549         assert_eq!(reply_path.introduction_node, IntroductionNode::NodeId(charlie_id));
 550
 551         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 552         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 553
 554         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 555         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 556
 557         let invoice = extract_invoice(david, &onion_message);
 558         assert_eq!(invoice.amount_msats(), 10_000_000);
 559         assert_ne!(invoice.signing_pubkey(), alice_id);
 560         assert!(!invoice.payment_paths().is_empty());
 561         for (_, path) in invoice.payment_paths() {
 562                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 563         }
 564
 565         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 566         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 567
 568         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
 569         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 570 }
 571
 572 /// Checks that a refund can be paid through blinded paths and that ephemeral pubkeys are used
 573 /// rather than exposing a node's pubkey.
 574 #[test]
 575 fn creates_and_pays_for_refund_using_two_hop_blinded_path() {
 576         let mut accept_forward_cfg = test_default_channel_config();
 577         accept_forward_cfg.accept_forwards_to_priv_channels = true;
 578
 579         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
 580         features.set_onion_messages_optional();
 581         features.set_route_blinding_optional();
 582
 583         let chanmon_cfgs = create_chanmon_cfgs(6);
 584         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
 585
 586         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
 587
 588         let node_chanmgrs = create_node_chanmgrs(
 589                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
 590         );
 591         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
 592
 593         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 594         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
 595         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
 596         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
 597         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
 598         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
 599         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
 600
 601         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
 602         let alice_id = alice.node.get_our_node_id();
 603         let bob_id = bob.node.get_our_node_id();
 604         let charlie_id = charlie.node.get_our_node_id();
 605         let david_id = david.node.get_our_node_id();
 606
 607         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
 608         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
 609
 610         let absolute_expiry = Duration::from_secs(u64::MAX);
 611         let payment_id = PaymentId([1; 32]);
 612         let refund = david.node
 613                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 614                 .unwrap()
 615                 .build().unwrap();
 616         assert_eq!(refund.amount_msats(), 10_000_000);
 617         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 618         assert_ne!(refund.payer_id(), david_id);
 619         assert!(!refund.paths().is_empty());
 620         for path in refund.paths() {
 621                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(charlie_id));
 622         }
 623         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
 624
 625         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 626         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 627
 628         connect_peers(alice, charlie);
 629
 630         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
 631         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 632
 633         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
 634         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
 635
 636         let invoice = extract_invoice(david, &onion_message);
 637         assert_eq!(invoice, expected_invoice);
 638
 639         assert_eq!(invoice.amount_msats(), 10_000_000);
 640         assert_ne!(invoice.signing_pubkey(), alice_id);
 641         assert!(!invoice.payment_paths().is_empty());
 642         for (_, path) in invoice.payment_paths() {
 643                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 644         }
 645
 646         route_bolt12_payment(david, &[charlie, bob, alice], &invoice);
 647         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
 648
 649         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
 650         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
 651 }
 652
 653 /// Checks that an offer can be paid through a one-hop blinded path and that ephemeral pubkeys are
 654 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 655 /// introduction node of the blinded path.
 656 #[test]
 657 fn creates_and_pays_for_offer_using_one_hop_blinded_path() {
 658         let chanmon_cfgs = create_chanmon_cfgs(2);
 659         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 660         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 661         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 662
 663         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 664
 665         let alice = &nodes[0];
 666         let alice_id = alice.node.get_our_node_id();
 667         let bob = &nodes[1];
 668         let bob_id = bob.node.get_our_node_id();
 669
 670         let offer = alice.node
 671                 .create_offer_builder(None).unwrap()
 672                 .amount_msats(10_000_000)
 673                 .build().unwrap();
 674         assert_ne!(offer.signing_pubkey(), Some(alice_id));
 675         assert!(!offer.paths().is_empty());
 676         for path in offer.paths() {
 677                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 678         }
 679
 680         let payment_id = PaymentId([1; 32]);
 681         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 682         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 683
 684         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 685         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 686
 687         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 688         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 689                 offer_id: offer.id(),
 690                 invoice_request: InvoiceRequestFields {
 691                         payer_id: invoice_request.payer_id(),
 692                         quantity: None,
 693                         payer_note_truncated: None,
 694                 },
 695         });
 696         assert_eq!(invoice_request.amount_msats(), None);
 697         assert_ne!(invoice_request.payer_id(), bob_id);
 698         assert_eq!(reply_path.introduction_node, IntroductionNode::NodeId(bob_id));
 699
 700         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 701         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 702
 703         let invoice = extract_invoice(bob, &onion_message);
 704         assert_eq!(invoice.amount_msats(), 10_000_000);
 705         assert_ne!(invoice.signing_pubkey(), alice_id);
 706         assert!(!invoice.payment_paths().is_empty());
 707         for (_, path) in invoice.payment_paths() {
 708                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 709         }
 710
 711         route_bolt12_payment(bob, &[alice], &invoice);
 712         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 713
 714         claim_bolt12_payment(bob, &[alice], payment_context);
 715         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 716 }
 717
 718 /// Checks that a refund can be paid through a one-hop blinded path and that ephemeral pubkeys are
 719 /// used rather than exposing a node's pubkey. However, the node's pubkey is still used as the
 720 /// introduction node of the blinded path.
 721 #[test]
 722 fn creates_and_pays_for_refund_using_one_hop_blinded_path() {
 723         let chanmon_cfgs = create_chanmon_cfgs(2);
 724         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 725         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 726         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 727
 728         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 729
 730         let alice = &nodes[0];
 731         let alice_id = alice.node.get_our_node_id();
 732         let bob = &nodes[1];
 733         let bob_id = bob.node.get_our_node_id();
 734
 735         let absolute_expiry = Duration::from_secs(u64::MAX);
 736         let payment_id = PaymentId([1; 32]);
 737         let refund = bob.node
 738                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 739                 .unwrap()
 740                 .build().unwrap();
 741         assert_eq!(refund.amount_msats(), 10_000_000);
 742         assert_eq!(refund.absolute_expiry(), Some(absolute_expiry));
 743         assert_ne!(refund.payer_id(), bob_id);
 744         assert!(!refund.paths().is_empty());
 745         for path in refund.paths() {
 746                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 747         }
 748         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 749
 750         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 751         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 752
 753         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 754         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 755
 756         let invoice = extract_invoice(bob, &onion_message);
 757         assert_eq!(invoice, expected_invoice);
 758
 759         assert_eq!(invoice.amount_msats(), 10_000_000);
 760         assert_ne!(invoice.signing_pubkey(), alice_id);
 761         assert!(!invoice.payment_paths().is_empty());
 762         for (_, path) in invoice.payment_paths() {
 763                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 764         }
 765
 766         route_bolt12_payment(bob, &[alice], &invoice);
 767         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 768
 769         claim_bolt12_payment(bob, &[alice], payment_context);
 770         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 771 }
 772
 773 /// Checks that an invoice for an offer without any blinded paths can be requested. Note that while
 774 /// the requested is sent directly using the node's pubkey, the response and the payment still use
 775 /// blinded paths as required by the spec.
 776 #[test]
 777 fn pays_for_offer_without_blinded_paths() {
 778         let chanmon_cfgs = create_chanmon_cfgs(2);
 779         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 780         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 781         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 782
 783         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 784
 785         let alice = &nodes[0];
 786         let alice_id = alice.node.get_our_node_id();
 787         let bob = &nodes[1];
 788         let bob_id = bob.node.get_our_node_id();
 789
 790         let offer = alice.node
 791                 .create_offer_builder(None).unwrap()
 792                 .clear_paths()
 793                 .amount_msats(10_000_000)
 794                 .build().unwrap();
 795         assert_eq!(offer.signing_pubkey(), Some(alice_id));
 796         assert!(offer.paths().is_empty());
 797
 798         let payment_id = PaymentId([1; 32]);
 799         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 800         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 801
 802         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 803         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 804
 805         let (invoice_request, _) = extract_invoice_request(alice, &onion_message);
 806         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 807                 offer_id: offer.id(),
 808                 invoice_request: InvoiceRequestFields {
 809                         payer_id: invoice_request.payer_id(),
 810                         quantity: None,
 811                         payer_note_truncated: None,
 812                 },
 813         });
 814
 815         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 816         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 817
 818         let invoice = extract_invoice(bob, &onion_message);
 819         route_bolt12_payment(bob, &[alice], &invoice);
 820         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 821
 822         claim_bolt12_payment(bob, &[alice], payment_context);
 823         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 824 }
 825
 826 /// Checks that a refund without any blinded paths can be paid. Note that while the invoice is sent
 827 /// directly using the node's pubkey, the payment still use blinded paths as required by the spec.
 828 #[test]
 829 fn pays_for_refund_without_blinded_paths() {
 830         let chanmon_cfgs = create_chanmon_cfgs(2);
 831         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 832         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 833         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 834
 835         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 836
 837         let alice = &nodes[0];
 838         let alice_id = alice.node.get_our_node_id();
 839         let bob = &nodes[1];
 840         let bob_id = bob.node.get_our_node_id();
 841
 842         let absolute_expiry = Duration::from_secs(u64::MAX);
 843         let payment_id = PaymentId([1; 32]);
 844         let refund = bob.node
 845                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
 846                 .unwrap()
 847                 .clear_paths()
 848                 .build().unwrap();
 849         assert_eq!(refund.payer_id(), bob_id);
 850         assert!(refund.paths().is_empty());
 851         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 852
 853         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
 854         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
 855
 856         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 857         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 858
 859         let invoice = extract_invoice(bob, &onion_message);
 860         assert_eq!(invoice, expected_invoice);
 861
 862         route_bolt12_payment(bob, &[alice], &invoice);
 863         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 864
 865         claim_bolt12_payment(bob, &[alice], payment_context);
 866         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 867 }
 868
 869 /// Checks that a deferred invoice can be paid asynchronously from an Event::InvoiceReceived.
 870 #[test]
 871 fn pays_bolt12_invoice_asynchronously() {
 872         let mut manually_pay_cfg = test_default_channel_config();
 873         manually_pay_cfg.manually_handle_bolt12_invoices = true;
 874
 875         let chanmon_cfgs = create_chanmon_cfgs(2);
 876         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 877         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, Some(manually_pay_cfg)]);
 878         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 879
 880         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 881
 882         let alice = &nodes[0];
 883         let alice_id = alice.node.get_our_node_id();
 884         let bob = &nodes[1];
 885         let bob_id = bob.node.get_our_node_id();
 886
 887         let offer = alice.node
 888                 .create_offer_builder(None).unwrap()
 889                 .amount_msats(10_000_000)
 890                 .build().unwrap();
 891
 892         let payment_id = PaymentId([1; 32]);
 893         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 894         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 895
 896         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 897         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 898
 899         let (invoice_request, _) = extract_invoice_request(alice, &onion_message);
 900         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 901                 offer_id: offer.id(),
 902                 invoice_request: InvoiceRequestFields {
 903                         payer_id: invoice_request.payer_id(),
 904                         quantity: None,
 905                         payer_note_truncated: None,
 906                 },
 907         });
 908
 909         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
 910         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
 911
 912         let invoice = match get_event!(bob, Event::InvoiceReceived) {
 913                 Event::InvoiceReceived { payment_id: actual_payment_id, invoice, .. } => {
 914                         assert_eq!(actual_payment_id, payment_id);
 915                         invoice
 916                 },
 917                 _ => panic!("No Event::InvoiceReceived"),
 918         };
 919         assert_eq!(invoice.amount_msats(), 10_000_000);
 920         assert_ne!(invoice.signing_pubkey(), alice_id);
 921         assert!(!invoice.payment_paths().is_empty());
 922         for (_, path) in invoice.payment_paths() {
 923                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
 924         }
 925
 926         assert!(bob.node.send_payment_for_bolt12_invoice(&invoice).is_ok());
 927         assert_eq!(
 928                 bob.node.send_payment_for_bolt12_invoice(&invoice),
 929                 Err(Bolt12PaymentError::DuplicateInvoice),
 930         );
 931
 932         route_bolt12_payment(bob, &[alice], &invoice);
 933         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
 934
 935         claim_bolt12_payment(bob, &[alice], payment_context);
 936         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
 937
 938         assert_eq!(
 939                 bob.node.send_payment_for_bolt12_invoice(&invoice),
 940                 Err(Bolt12PaymentError::DuplicateInvoice),
 941         );
 942
 943         for _ in 0..=IDEMPOTENCY_TIMEOUT_TICKS {
 944                 bob.node.timer_tick_occurred();
 945         }
 946
 947         assert_eq!(
 948                 bob.node.send_payment_for_bolt12_invoice(&invoice),
 949                 Err(Bolt12PaymentError::UnexpectedInvoice),
 950         );
 951 }
 952
 953 /// Checks that an offer can be created using an unannounced node as a blinded path's introduction
 954 /// node. This is only preferred if there are no other options which may indicated either the offer
 955 /// is intended for the unannounced node or that the node is actually announced (e.g., an LSP) but
 956 /// the recipient doesn't have a network graph.
 957 #[test]
 958 fn creates_offer_with_blinded_path_using_unannounced_introduction_node() {
 959         let chanmon_cfgs = create_chanmon_cfgs(2);
 960         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
 961         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
 962         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
 963
 964         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
 965
 966         let alice = &nodes[0];
 967         let alice_id = alice.node.get_our_node_id();
 968         let bob = &nodes[1];
 969         let bob_id = bob.node.get_our_node_id();
 970
 971         let offer = alice.node
 972                 .create_offer_builder(None).unwrap()
 973                 .amount_msats(10_000_000)
 974                 .build().unwrap();
 975         assert_ne!(offer.signing_pubkey(), Some(alice_id));
 976         assert!(!offer.paths().is_empty());
 977         for path in offer.paths() {
 978                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
 979         }
 980
 981         let payment_id = PaymentId([1; 32]);
 982         bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None).unwrap();
 983         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
 984
 985         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
 986         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
 987
 988         let (invoice_request, reply_path) = extract_invoice_request(alice, &onion_message);
 989         let payment_context = PaymentContext::Bolt12Offer(Bolt12OfferContext {
 990                 offer_id: offer.id(),
 991                 invoice_request: InvoiceRequestFields {
 992                         payer_id: invoice_request.payer_id(),
 993                         quantity: None,
 994                         payer_note_truncated: None,
 995                 },
 996         });
 997         assert_ne!(invoice_request.payer_id(), bob_id);
 998         assert_eq!(reply_path.introduction_node, IntroductionNode::NodeId(alice_id));
 999
1000         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1001         bob.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1002
1003         let invoice = extract_invoice(bob, &onion_message);
1004         assert_ne!(invoice.signing_pubkey(), alice_id);
1005         assert!(!invoice.payment_paths().is_empty());
1006         for (_, path) in invoice.payment_paths() {
1007                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
1008         }
1009
1010         route_bolt12_payment(bob, &[alice], &invoice);
1011         expect_recent_payment!(bob, RecentPaymentDetails::Pending, payment_id);
1012
1013         claim_bolt12_payment(bob, &[alice], payment_context);
1014         expect_recent_payment!(bob, RecentPaymentDetails::Fulfilled, payment_id);
1015 }
1016
1017 /// Checks that a refund can be created using an unannounced node as a blinded path's introduction
1018 /// node. This is only preferred if there are no other options which may indicated either the refund
1019 /// is intended for the unannounced node or that the node is actually announced (e.g., an LSP) but
1020 /// the sender doesn't have a network graph.
1021 #[test]
1022 fn creates_refund_with_blinded_path_using_unannounced_introduction_node() {
1023         let chanmon_cfgs = create_chanmon_cfgs(2);
1024         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1025         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1026         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1027
1028         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1029
1030         let alice = &nodes[0];
1031         let alice_id = alice.node.get_our_node_id();
1032         let bob = &nodes[1];
1033         let bob_id = bob.node.get_our_node_id();
1034
1035         let absolute_expiry = Duration::from_secs(u64::MAX);
1036         let payment_id = PaymentId([1; 32]);
1037         let refund = bob.node
1038                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1039                 .unwrap()
1040                 .build().unwrap();
1041         assert_ne!(refund.payer_id(), bob_id);
1042         assert!(!refund.paths().is_empty());
1043         for path in refund.paths() {
1044                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(alice_id));
1045         }
1046         expect_recent_payment!(bob, RecentPaymentDetails::AwaitingInvoice, payment_id);
1047
1048         let expected_invoice = alice.node.request_refund_payment(&refund).unwrap();
1049
1050         let onion_message = alice.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1051
1052         let invoice = extract_invoice(bob, &onion_message);
1053         assert_eq!(invoice, expected_invoice);
1054         assert_ne!(invoice.signing_pubkey(), alice_id);
1055         assert!(!invoice.payment_paths().is_empty());
1056         for (_, path) in invoice.payment_paths() {
1057                 assert_eq!(path.introduction_node, IntroductionNode::NodeId(bob_id));
1058         }
1059 }
1060
1061 /// Fails creating or paying an offer when a blinded path cannot be created because no peers are
1062 /// connected.
1063 #[test]
1064 fn fails_creating_or_paying_for_offer_without_connected_peers() {
1065         let chanmon_cfgs = create_chanmon_cfgs(6);
1066         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1067         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1068         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1069
1070         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1071         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1072         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1073         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1074         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1075         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1076         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1077
1078         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1079
1080         disconnect_peers(alice, &[bob, charlie, david, &nodes[4], &nodes[5]]);
1081         disconnect_peers(david, &[bob, charlie, &nodes[4], &nodes[5]]);
1082
1083         let absolute_expiry = alice.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
1084         match alice.node.create_offer_builder(Some(absolute_expiry)) {
1085                 Ok(_) => panic!("Expected error"),
1086                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1087         }
1088
1089         let mut args = ReconnectArgs::new(alice, bob);
1090         args.send_channel_ready = (true, true);
1091         reconnect_nodes(args);
1092
1093         let offer = alice.node
1094                 .create_offer_builder(Some(absolute_expiry)).unwrap()
1095                 .amount_msats(10_000_000)
1096                 .build().unwrap();
1097
1098         let payment_id = PaymentId([1; 32]);
1099
1100         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1101                 Ok(_) => panic!("Expected error"),
1102                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1103         }
1104
1105         assert!(nodes[0].node.list_recent_payments().is_empty());
1106
1107         let mut args = ReconnectArgs::new(charlie, david);
1108         args.send_channel_ready = (true, true);
1109         reconnect_nodes(args);
1110
1111         assert!(
1112                 david.node.pay_for_offer(
1113                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
1114                 ).is_ok()
1115         );
1116
1117         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1118 }
1119
1120 /// Fails creating or sending an invoice for a refund when a blinded path cannot be created because
1121 /// no peers are connected.
1122 #[test]
1123 fn fails_creating_refund_or_sending_invoice_without_connected_peers() {
1124         let mut accept_forward_cfg = test_default_channel_config();
1125         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1126
1127         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1128         features.set_onion_messages_optional();
1129         features.set_route_blinding_optional();
1130
1131         let chanmon_cfgs = create_chanmon_cfgs(6);
1132         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1133
1134         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1135
1136         let node_chanmgrs = create_node_chanmgrs(
1137                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1138         );
1139         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1140
1141         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1142         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1143         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1144         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1145         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1146         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1147         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1148
1149         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1150
1151         disconnect_peers(alice, &[bob, charlie, david, &nodes[4], &nodes[5]]);
1152         disconnect_peers(david, &[bob, charlie, &nodes[4], &nodes[5]]);
1153
1154         let absolute_expiry = david.node.duration_since_epoch() + MAX_SHORT_LIVED_RELATIVE_EXPIRY;
1155         let payment_id = PaymentId([1; 32]);
1156         match david.node.create_refund_builder(
1157                 10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1158         ) {
1159                 Ok(_) => panic!("Expected error"),
1160                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1161         }
1162
1163         let mut args = ReconnectArgs::new(charlie, david);
1164         args.send_channel_ready = (true, true);
1165         reconnect_nodes(args);
1166
1167         let refund = david.node
1168                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1169                 .unwrap()
1170                 .build().unwrap();
1171
1172         match alice.node.request_refund_payment(&refund) {
1173                 Ok(_) => panic!("Expected error"),
1174                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1175         }
1176
1177         let mut args = ReconnectArgs::new(alice, bob);
1178         args.send_channel_ready = (true, true);
1179         reconnect_nodes(args);
1180
1181         assert!(alice.node.request_refund_payment(&refund).is_ok());
1182 }
1183
1184 /// Fails creating an invoice request when the offer contains an unsupported chain.
1185 #[test]
1186 fn fails_creating_invoice_request_for_unsupported_chain() {
1187         let chanmon_cfgs = create_chanmon_cfgs(2);
1188         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1189         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1190         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1191
1192         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1193
1194         let alice = &nodes[0];
1195         let bob = &nodes[1];
1196
1197         let offer = alice.node
1198                 .create_offer_builder(None).unwrap()
1199                 .clear_chains()
1200                 .chain(Network::Signet)
1201                 .build().unwrap();
1202
1203         let payment_id = PaymentId([1; 32]);
1204         match bob.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1205                 Ok(_) => panic!("Expected error"),
1206                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
1207         }
1208 }
1209
1210 /// Fails requesting a payment when the refund contains an unsupported chain.
1211 #[test]
1212 fn fails_sending_invoice_with_unsupported_chain_for_refund() {
1213         let chanmon_cfgs = create_chanmon_cfgs(2);
1214         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1215         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1216         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1217
1218         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1219
1220         let alice = &nodes[0];
1221         let bob = &nodes[1];
1222
1223         let absolute_expiry = Duration::from_secs(u64::MAX);
1224         let payment_id = PaymentId([1; 32]);
1225         let refund = bob.node
1226                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1227                 .unwrap()
1228                 .chain(Network::Signet)
1229                 .build().unwrap();
1230
1231         match alice.node.request_refund_payment(&refund) {
1232                 Ok(_) => panic!("Expected error"),
1233                 Err(e) => assert_eq!(e, Bolt12SemanticError::UnsupportedChain),
1234         }
1235 }
1236
1237 /// Fails creating an invoice request when a blinded reply path cannot be created.
1238 #[test]
1239 fn fails_creating_invoice_request_without_blinded_reply_path() {
1240         let chanmon_cfgs = create_chanmon_cfgs(6);
1241         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1242         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1243         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1244
1245         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1246         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1247         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1248         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1249         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1250
1251         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1252
1253         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1254         disconnect_peers(david, &[bob, charlie, &nodes[4], &nodes[5]]);
1255
1256         let offer = alice.node
1257                 .create_offer_builder(None).unwrap()
1258                 .amount_msats(10_000_000)
1259                 .build().unwrap();
1260
1261         let payment_id = PaymentId([1; 32]);
1262
1263         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1264                 Ok(_) => panic!("Expected error"),
1265                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1266         }
1267
1268         assert!(nodes[0].node.list_recent_payments().is_empty());
1269 }
1270
1271 #[test]
1272 fn fails_creating_invoice_request_with_duplicate_payment_id() {
1273         let chanmon_cfgs = create_chanmon_cfgs(6);
1274         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1275         let node_chanmgrs = create_node_chanmgrs(6, &node_cfgs, &[None, None, None, None, None, None]);
1276         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1277
1278         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1279         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1280         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1281         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1282         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1283         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1284         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1285
1286         let (alice, _bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1287
1288         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1289
1290         let offer = alice.node
1291                 .create_offer_builder(None).unwrap()
1292                 .amount_msats(10_000_000)
1293                 .build().unwrap();
1294
1295         let payment_id = PaymentId([1; 32]);
1296         assert!(
1297                 david.node.pay_for_offer(
1298                         &offer, None, None, None, payment_id, Retry::Attempts(0), None
1299                 ).is_ok()
1300         );
1301         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1302
1303         match david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None) {
1304                 Ok(_) => panic!("Expected error"),
1305                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
1306         }
1307
1308         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1309 }
1310
1311 #[test]
1312 fn fails_creating_refund_with_duplicate_payment_id() {
1313         let chanmon_cfgs = create_chanmon_cfgs(2);
1314         let node_cfgs = create_node_cfgs(2, &chanmon_cfgs);
1315         let node_chanmgrs = create_node_chanmgrs(2, &node_cfgs, &[None, None]);
1316         let nodes = create_network(2, &node_cfgs, &node_chanmgrs);
1317
1318         create_announced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1319
1320         let absolute_expiry = Duration::from_secs(u64::MAX);
1321         let payment_id = PaymentId([1; 32]);
1322         assert!(
1323                 nodes[0].node.create_refund_builder(
1324                         10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1325                 ).is_ok()
1326         );
1327         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
1328
1329         match nodes[0].node.create_refund_builder(
1330                 10_000, absolute_expiry, payment_id, Retry::Attempts(0), None
1331         ) {
1332                 Ok(_) => panic!("Expected error"),
1333                 Err(e) => assert_eq!(e, Bolt12SemanticError::DuplicatePaymentId),
1334         }
1335
1336         expect_recent_payment!(nodes[0], RecentPaymentDetails::AwaitingInvoice, payment_id);
1337 }
1338
1339 #[test]
1340 fn fails_sending_invoice_without_blinded_payment_paths_for_offer() {
1341         let mut accept_forward_cfg = test_default_channel_config();
1342         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1343
1344         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
1345         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1346         features.set_onion_messages_optional();
1347         features.clear_route_blinding();
1348
1349         let chanmon_cfgs = create_chanmon_cfgs(6);
1350         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1351
1352         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1353
1354         let node_chanmgrs = create_node_chanmgrs(
1355                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1356         );
1357         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1358
1359         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1360         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1361         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1362         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1363         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1364         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1365         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1366
1367         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1368         let alice_id = alice.node.get_our_node_id();
1369         let bob_id = bob.node.get_our_node_id();
1370         let charlie_id = charlie.node.get_our_node_id();
1371         let david_id = david.node.get_our_node_id();
1372
1373         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1374         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1375
1376         let offer = alice.node
1377                 .create_offer_builder(None).unwrap()
1378                 .amount_msats(10_000_000)
1379                 .build().unwrap();
1380
1381         let payment_id = PaymentId([1; 32]);
1382         david.node.pay_for_offer(&offer, None, None, None, payment_id, Retry::Attempts(0), None)
1383                 .unwrap();
1384
1385         connect_peers(david, bob);
1386
1387         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1388         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1389
1390         connect_peers(alice, charlie);
1391
1392         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1393         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1394
1395         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1396         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1397
1398         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1399         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1400
1401         let invoice_error = extract_invoice_error(david, &onion_message);
1402         assert_eq!(invoice_error, InvoiceError::from(Bolt12SemanticError::MissingPaths));
1403 }
1404
1405 #[test]
1406 fn fails_sending_invoice_without_blinded_payment_paths_for_refund() {
1407         let mut accept_forward_cfg = test_default_channel_config();
1408         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1409
1410         // Clearing route_blinding prevents forming any payment paths since the node is unannounced.
1411         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1412         features.set_onion_messages_optional();
1413         features.clear_route_blinding();
1414
1415         let chanmon_cfgs = create_chanmon_cfgs(6);
1416         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1417
1418         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1419
1420         let node_chanmgrs = create_node_chanmgrs(
1421                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1422         );
1423         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1424
1425         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1426         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1427         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1428         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1429         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1430         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1431         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1432
1433         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1434
1435         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1436         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1437
1438         let absolute_expiry = Duration::from_secs(u64::MAX);
1439         let payment_id = PaymentId([1; 32]);
1440         let refund = david.node
1441                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1442                 .unwrap()
1443                 .build().unwrap();
1444
1445         match alice.node.request_refund_payment(&refund) {
1446                 Ok(_) => panic!("Expected error"),
1447                 Err(e) => assert_eq!(e, Bolt12SemanticError::MissingPaths),
1448         }
1449 }
1450
1451 #[test]
1452 fn fails_paying_invoice_more_than_once() {
1453         let mut accept_forward_cfg = test_default_channel_config();
1454         accept_forward_cfg.accept_forwards_to_priv_channels = true;
1455
1456         let mut features = channelmanager::provided_init_features(&accept_forward_cfg);
1457         features.set_onion_messages_optional();
1458         features.set_route_blinding_optional();
1459
1460         let chanmon_cfgs = create_chanmon_cfgs(6);
1461         let node_cfgs = create_node_cfgs(6, &chanmon_cfgs);
1462
1463         *node_cfgs[1].override_init_features.borrow_mut() = Some(features);
1464
1465         let node_chanmgrs = create_node_chanmgrs(
1466                 6, &node_cfgs, &[None, Some(accept_forward_cfg), None, None, None, None]
1467         );
1468         let nodes = create_network(6, &node_cfgs, &node_chanmgrs);
1469
1470         create_unannounced_chan_between_nodes_with_value(&nodes, 0, 1, 10_000_000, 1_000_000_000);
1471         create_unannounced_chan_between_nodes_with_value(&nodes, 2, 3, 10_000_000, 1_000_000_000);
1472         create_announced_chan_between_nodes_with_value(&nodes, 1, 2, 10_000_000, 1_000_000_000);
1473         create_announced_chan_between_nodes_with_value(&nodes, 1, 4, 10_000_000, 1_000_000_000);
1474         create_announced_chan_between_nodes_with_value(&nodes, 1, 5, 10_000_000, 1_000_000_000);
1475         create_announced_chan_between_nodes_with_value(&nodes, 2, 4, 10_000_000, 1_000_000_000);
1476         create_announced_chan_between_nodes_with_value(&nodes, 2, 5, 10_000_000, 1_000_000_000);
1477
1478         let (alice, bob, charlie, david) = (&nodes[0], &nodes[1], &nodes[2], &nodes[3]);
1479         let alice_id = alice.node.get_our_node_id();
1480         let bob_id = bob.node.get_our_node_id();
1481         let charlie_id = charlie.node.get_our_node_id();
1482         let david_id = david.node.get_our_node_id();
1483
1484         disconnect_peers(alice, &[charlie, david, &nodes[4], &nodes[5]]);
1485         disconnect_peers(david, &[bob, &nodes[4], &nodes[5]]);
1486
1487         let absolute_expiry = Duration::from_secs(u64::MAX);
1488         let payment_id = PaymentId([1; 32]);
1489         let refund = david.node
1490                 .create_refund_builder(10_000_000, absolute_expiry, payment_id, Retry::Attempts(0), None)
1491                 .unwrap()
1492                 .build().unwrap();
1493         expect_recent_payment!(david, RecentPaymentDetails::AwaitingInvoice, payment_id);
1494
1495         // Alice sends the first invoice
1496         alice.node.request_refund_payment(&refund).unwrap();
1497
1498         connect_peers(alice, charlie);
1499
1500         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1501         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1502
1503         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1504         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1505
1506         // David pays the first invoice
1507         let payment_context = PaymentContext::Bolt12Refund(Bolt12RefundContext {});
1508         let invoice1 = extract_invoice(david, &onion_message);
1509
1510         route_bolt12_payment(david, &[charlie, bob, alice], &invoice1);
1511         expect_recent_payment!(david, RecentPaymentDetails::Pending, payment_id);
1512
1513         claim_bolt12_payment(david, &[charlie, bob, alice], payment_context);
1514         expect_recent_payment!(david, RecentPaymentDetails::Fulfilled, payment_id);
1515
1516         disconnect_peers(alice, &[charlie]);
1517
1518         // Alice sends the second invoice
1519         alice.node.request_refund_payment(&refund).unwrap();
1520
1521         connect_peers(alice, charlie);
1522         connect_peers(david, bob);
1523
1524         let onion_message = alice.onion_messenger.next_onion_message_for_peer(charlie_id).unwrap();
1525         charlie.onion_messenger.handle_onion_message(&alice_id, &onion_message);
1526
1527         let onion_message = charlie.onion_messenger.next_onion_message_for_peer(david_id).unwrap();
1528         david.onion_messenger.handle_onion_message(&charlie_id, &onion_message);
1529
1530         let invoice2 = extract_invoice(david, &onion_message);
1531         assert_eq!(invoice1.payer_metadata(), invoice2.payer_metadata());
1532
1533         // David sends an error instead of paying the second invoice
1534         let onion_message = david.onion_messenger.next_onion_message_for_peer(bob_id).unwrap();
1535         bob.onion_messenger.handle_onion_message(&david_id, &onion_message);
1536
1537         let onion_message = bob.onion_messenger.next_onion_message_for_peer(alice_id).unwrap();
1538         alice.onion_messenger.handle_onion_message(&bob_id, &onion_message);
1539
1540         let invoice_error = extract_invoice_error(alice, &onion_message);
1541         assert_eq!(invoice_error, InvoiceError::from_string("DuplicateInvoice".to_string()));
1542 }