From: Elias Rohrer Date: Wed, 9 Mar 2022 17:13:47 +0000 (-0600) Subject: Add a random per-path CLTV offset for privacy. X-Git-Tag: v0.0.106~30^2 X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=commitdiff_plain;h=e92b5a7ebd6edcf1da6e8e1d3ed34f5cf20bffaf;p=rust-lightning Add a random per-path CLTV offset for privacy. --- diff --git a/fuzz/src/full_stack.rs b/fuzz/src/full_stack.rs index 6800a3fe1..a4e1a0864 100644 --- a/fuzz/src/full_stack.rs +++ b/fuzz/src/full_stack.rs @@ -459,7 +459,8 @@ pub fn do_test(data: &[u8], logger: &Arc) { final_value_msat, final_cltv_expiry_delta: 42, }; - let route = match find_route(&our_id, ¶ms, &network_graph, None, Arc::clone(&logger), &scorer) { + let random_seed_bytes: [u8; 32] = keys_manager.get_secure_random_bytes(); + let route = match find_route(&our_id, ¶ms, &network_graph, None, Arc::clone(&logger), &scorer, &random_seed_bytes) { Ok(route) => route, Err(_) => return, }; @@ -482,7 +483,8 @@ pub fn do_test(data: &[u8], logger: &Arc) { final_value_msat, final_cltv_expiry_delta: 42, }; - let mut route = match find_route(&our_id, ¶ms, &network_graph, None, Arc::clone(&logger), &scorer) { + let random_seed_bytes: [u8; 32] = keys_manager.get_secure_random_bytes(); + let mut route = match find_route(&our_id, ¶ms, &network_graph, None, Arc::clone(&logger), &scorer, &random_seed_bytes) { Ok(route) => route, Err(_) => return, }; diff --git a/fuzz/src/router.rs b/fuzz/src/router.rs index 095059c51..bb33918b4 100644 --- a/fuzz/src/router.rs +++ b/fuzz/src/router.rs @@ -250,6 +250,7 @@ pub fn do_test(data: &[u8], out: Out) { } } let scorer = FixedPenaltyScorer::with_penalty(0); + let random_seed_bytes: [u8; 32] = [get_slice!(1)[0]; 32]; for target in node_pks.iter() { let route_params = RouteParameters { payment_params: PaymentParameters::from_node_id(*target).with_route_hints(last_hops.clone()), @@ -258,7 +259,7 @@ pub fn do_test(data: &[u8], out: Out) { }; let _ = find_route(&our_pubkey, &route_params, &net_graph, first_hops.map(|c| c.iter().collect::>()).as_ref().map(|a| a.as_slice()), - Arc::clone(&logger), &scorer); + Arc::clone(&logger), &scorer, &random_seed_bytes); } }, } diff --git a/lightning-background-processor/src/lib.rs b/lightning-background-processor/src/lib.rs index f2058b108..084ea62ef 100644 --- a/lightning-background-processor/src/lib.rs +++ b/lightning-background-processor/src/lib.rs @@ -669,13 +669,15 @@ mod tests { #[test] fn test_invoice_payer() { + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let nodes = create_nodes(2, "test_invoice_payer".to_string()); // Initiate the background processors to watch each node. let data_dir = nodes[0].persister.get_data_dir(); let persister = move |node: &ChannelManager, Arc, Arc, Arc, Arc>| FilesystemPersister::persist_manager(data_dir.clone(), node); - let router = DefaultRouter::new(Arc::clone(&nodes[0].network_graph), Arc::clone(&nodes[0].logger)); let scorer = Arc::new(Mutex::new(test_utils::TestScorer::with_penalty(0))); + let router = DefaultRouter::new(Arc::clone(&nodes[0].network_graph), Arc::clone(&nodes[0].logger), random_seed_bytes); let invoice_payer = Arc::new(InvoicePayer::new(Arc::clone(&nodes[0].node), router, scorer, Arc::clone(&nodes[0].logger), |_: &_| {}, RetryAttempts(2))); let event_handler = Arc::clone(&invoice_payer); let bg_processor = BackgroundProcessor::start(persister, event_handler, nodes[0].chain_monitor.clone(), nodes[0].node.clone(), nodes[0].net_graph_msg_handler.clone(), nodes[0].peer_manager.clone(), nodes[0].logger.clone()); diff --git a/lightning-invoice/src/utils.rs b/lightning-invoice/src/utils.rs index 78a092e24..c2bd4b49c 100644 --- a/lightning-invoice/src/utils.rs +++ b/lightning-invoice/src/utils.rs @@ -4,7 +4,7 @@ use {CreationError, Currency, DEFAULT_EXPIRY_TIME, Invoice, InvoiceBuilder, Sign use payment::{Payer, Router}; use bech32::ToBase32; -use bitcoin_hashes::Hash; +use bitcoin_hashes::{Hash, sha256}; use crate::prelude::*; use lightning::chain; use lightning::chain::chaininterface::{BroadcasterInterface, FeeEstimator}; @@ -22,6 +22,7 @@ use secp256k1::key::PublicKey; use core::convert::TryInto; use core::ops::Deref; use core::time::Duration; +use sync::Mutex; #[cfg(feature = "std")] /// Utility to create an invoice that can be paid to one of multiple nodes, or a "phantom invoice." @@ -224,12 +225,15 @@ where pub struct DefaultRouter, L: Deref> where L::Target: Logger { network_graph: G, logger: L, + random_seed_bytes: Mutex<[u8; 32]>, } impl, L: Deref> DefaultRouter where L::Target: Logger { - /// Creates a new router using the given [`NetworkGraph`] and [`Logger`]. - pub fn new(network_graph: G, logger: L) -> Self { - Self { network_graph, logger } + /// Creates a new router using the given [`NetworkGraph`], a [`Logger`], and a randomness source + /// `random_seed_bytes`. + pub fn new(network_graph: G, logger: L, random_seed_bytes: [u8; 32]) -> Self { + let random_seed_bytes = Mutex::new(random_seed_bytes); + Self { network_graph, logger, random_seed_bytes } } } @@ -239,7 +243,12 @@ where L::Target: Logger { &self, payer: &PublicKey, params: &RouteParameters, _payment_hash: &PaymentHash, first_hops: Option<&[&ChannelDetails]>, scorer: &S ) -> Result { - find_route(payer, params, &*self.network_graph, first_hops, &*self.logger, scorer) + let random_seed_bytes = { + let mut locked_random_seed_bytes = self.random_seed_bytes.lock().unwrap(); + *locked_random_seed_bytes = sha256::Hash::hash(&*locked_random_seed_bytes).into_inner(); + *locked_random_seed_bytes + }; + find_route(payer, params, &*self.network_graph, first_hops, &*self.logger, scorer, &random_seed_bytes) } } @@ -299,6 +308,7 @@ mod test { use lightning::util::enforcing_trait_impls::EnforcingSigner; use lightning::util::events::{MessageSendEvent, MessageSendEventsProvider, Event}; use lightning::util::test_utils; + use lightning::chain::keysinterface::KeysInterface; use utils::create_invoice_from_channelmanager_and_duration_since_epoch; #[test] @@ -327,9 +337,10 @@ mod test { let network_graph = node_cfgs[0].network_graph; let logger = test_utils::TestLogger::new(); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = find_route( &nodes[0].node.get_our_node_id(), &route_params, network_graph, - Some(&first_hops.iter().collect::>()), &logger, &scorer, + Some(&first_hops.iter().collect::>()), &logger, &scorer, &random_seed_bytes ).unwrap(); let payment_event = { @@ -415,9 +426,10 @@ mod test { let network_graph = node_cfgs[0].network_graph; let logger = test_utils::TestLogger::new(); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = find_route( &nodes[0].node.get_our_node_id(), ¶ms, network_graph, - Some(&first_hops.iter().collect::>()), &logger, &scorer, + Some(&first_hops.iter().collect::>()), &logger, &scorer, &random_seed_bytes ).unwrap(); let (payment_event, fwd_idx) = { let mut payment_hash = PaymentHash([0; 32]); diff --git a/lightning/src/ln/channelmanager.rs b/lightning/src/ln/channelmanager.rs index d206dee49..e9ee8f6ab 100644 --- a/lightning/src/ln/channelmanager.rs +++ b/lightning/src/ln/channelmanager.rs @@ -6844,6 +6844,7 @@ mod tests { use util::errors::APIError; use util::events::{Event, MessageSendEvent, MessageSendEventsProvider}; use util::test_utils; + use chain::keysinterface::KeysInterface; #[cfg(feature = "std")] #[test] @@ -7097,6 +7098,7 @@ mod tests { let nodes = create_network(2, &node_cfgs, &node_chanmgrs); create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); // To start (1), send a regular payment but don't claim it. let expected_route = [&nodes[1]]; @@ -7110,7 +7112,7 @@ mod tests { }; let route = find_route( &nodes[0].node.get_our_node_id(), &route_params, nodes[0].network_graph, None, - nodes[0].logger, &scorer + nodes[0].logger, &scorer, &random_seed_bytes ).unwrap(); nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage)).unwrap(); check_added_monitors!(nodes[0], 1); @@ -7141,7 +7143,7 @@ mod tests { let payment_preimage = PaymentPreimage([42; 32]); let route = find_route( &nodes[0].node.get_our_node_id(), &route_params, nodes[0].network_graph, None, - nodes[0].logger, &scorer + nodes[0].logger, &scorer, &random_seed_bytes ).unwrap(); let (payment_hash, _) = nodes[0].node.send_spontaneous_payment(&route, Some(payment_preimage)).unwrap(); check_added_monitors!(nodes[0], 1); @@ -7202,9 +7204,10 @@ mod tests { let network_graph = nodes[0].network_graph; let first_hops = nodes[0].node.list_usable_channels(); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = find_route( &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::>()), - nodes[0].logger, &scorer + nodes[0].logger, &scorer, &random_seed_bytes ).unwrap(); let test_preimage = PaymentPreimage([42; 32]); @@ -7245,9 +7248,10 @@ mod tests { let network_graph = nodes[0].network_graph; let first_hops = nodes[0].node.list_usable_channels(); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = find_route( &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::>()), - nodes[0].logger, &scorer + nodes[0].logger, &scorer, &random_seed_bytes ).unwrap(); let test_preimage = PaymentPreimage([42; 32]); @@ -7331,7 +7335,7 @@ mod tests { pub mod bench { use chain::Listen; use chain::chainmonitor::{ChainMonitor, Persist}; - use chain::keysinterface::{KeysManager, InMemorySigner}; + use chain::keysinterface::{KeysManager, KeysInterface, InMemorySigner}; use ln::channelmanager::{BestBlock, ChainParameters, ChannelManager, PaymentHash, PaymentPreimage}; use ln::features::{InitFeatures, InvoiceFeatures}; use ln::functional_test_utils::*; @@ -7340,7 +7344,7 @@ pub mod bench { use routing::router::{PaymentParameters, get_route}; use util::test_utils; use util::config::UserConfig; - use util::events::{Event, MessageSendEvent, MessageSendEventsProvider, PaymentPurpose}; + use util::events::{Event, MessageSendEvent, MessageSendEventsProvider}; use bitcoin::hashes::Hash; use bitcoin::hashes::sha256::Hash as Sha256; @@ -7448,8 +7452,11 @@ pub mod bench { let payment_params = PaymentParameters::from_node_id($node_b.get_our_node_id()) .with_features(InvoiceFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); - let route = get_route(&$node_a.get_our_node_id(), &payment_params, &dummy_graph, - Some(&usable_channels.iter().map(|r| r).collect::>()), 10_000, TEST_FINAL_CLTV, &logger_a, &scorer).unwrap(); + let seed = [3u8; 32]; + let keys_manager = KeysManager::new(&seed, 42, 42); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); + let route = get_route(&$node_a.get_our_node_id(), &payment_params, &dummy_graph.read_only(), + Some(&usable_channels.iter().map(|r| r).collect::>()), 10_000, TEST_FINAL_CLTV, &logger_a, &scorer, &random_seed_bytes).unwrap(); let mut payment_preimage = PaymentPreimage([0; 32]); payment_preimage.0[0..8].copy_from_slice(&payment_count.to_le_bytes()); diff --git a/lightning/src/ln/functional_test_utils.rs b/lightning/src/ln/functional_test_utils.rs index a908cd416..6efd175c3 100644 --- a/lightning/src/ln/functional_test_utils.rs +++ b/lightning/src/ln/functional_test_utils.rs @@ -10,7 +10,7 @@ //! A bunch of useful utilities for building networks of nodes and exchanging messages between //! nodes for functional tests. -use chain::{BestBlock, Confirm, Listen, Watch}; +use chain::{BestBlock, Confirm, Listen, Watch, keysinterface::KeysInterface}; use chain::channelmonitor::ChannelMonitor; use chain::transaction::OutPoint; use ln::{PaymentPreimage, PaymentHash, PaymentSecret}; @@ -1094,15 +1094,18 @@ macro_rules! get_route_and_payment_hash { $crate::get_route_and_payment_hash!($send_node, $recv_node, vec![], $recv_value, TEST_FINAL_CLTV) }}; ($send_node: expr, $recv_node: expr, $last_hops: expr, $recv_value: expr, $cltv: expr) => {{ + use $crate::chain::keysinterface::KeysInterface; let (payment_preimage, payment_hash, payment_secret) = $crate::get_payment_preimage_hash!($recv_node, Some($recv_value)); let payment_params = $crate::routing::router::PaymentParameters::from_node_id($recv_node.node.get_our_node_id()) .with_features($crate::ln::features::InvoiceFeatures::known()) .with_route_hints($last_hops); let scorer = $crate::util::test_utils::TestScorer::with_penalty(0); + let keys_manager = $crate::util::test_utils::TestKeysInterface::new(&[0u8; 32], bitcoin::network::constants::Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = $crate::routing::router::get_route( - &$send_node.node.get_our_node_id(), &payment_params, $send_node.network_graph, + &$send_node.node.get_our_node_id(), &payment_params, &$send_node.network_graph.read_only(), Some(&$send_node.node.list_usable_channels().iter().collect::>()), - $recv_value, $cltv, $send_node.logger, &scorer + $recv_value, $cltv, $send_node.logger, &scorer, &random_seed_bytes ).unwrap(); (route, payment_hash, payment_preimage, payment_secret) }} @@ -1557,11 +1560,15 @@ pub const TEST_FINAL_CLTV: u32 = 70; pub fn route_payment<'a, 'b, 'c>(origin_node: &Node<'a, 'b, 'c>, expected_route: &[&Node<'a, 'b, 'c>], recv_value: u64) -> (PaymentPreimage, PaymentHash, PaymentSecret) { let payment_params = PaymentParameters::from_node_id(expected_route.last().unwrap().node.get_our_node_id()) .with_features(InvoiceFeatures::known()); + let network_graph = origin_node.network_graph.read_only(); let scorer = test_utils::TestScorer::with_penalty(0); + let seed = [0u8; 32]; + let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = get_route( - &origin_node.node.get_our_node_id(), &payment_params, &origin_node.network_graph, + &origin_node.node.get_our_node_id(), &payment_params, &network_graph, Some(&origin_node.node.list_usable_channels().iter().collect::>()), - recv_value, TEST_FINAL_CLTV, origin_node.logger, &scorer).unwrap(); + recv_value, TEST_FINAL_CLTV, origin_node.logger, &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), expected_route.len()); for (node, hop) in expected_route.iter().zip(route.paths[0].iter()) { @@ -1575,10 +1582,14 @@ pub fn route_payment<'a, 'b, 'c>(origin_node: &Node<'a, 'b, 'c>, expected_route: pub fn route_over_limit<'a, 'b, 'c>(origin_node: &Node<'a, 'b, 'c>, expected_route: &[&Node<'a, 'b, 'c>], recv_value: u64) { let payment_params = PaymentParameters::from_node_id(expected_route.last().unwrap().node.get_our_node_id()) .with_features(InvoiceFeatures::known()); + let network_graph = origin_node.network_graph.read_only(); let scorer = test_utils::TestScorer::with_penalty(0); + let seed = [0u8; 32]; + let keys_manager = test_utils::TestKeysInterface::new(&seed, Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = get_route( - &origin_node.node.get_our_node_id(), &payment_params, origin_node.network_graph, - None, recv_value, TEST_FINAL_CLTV, origin_node.logger, &scorer).unwrap(); + &origin_node.node.get_our_node_id(), &payment_params, &network_graph, + None, recv_value, TEST_FINAL_CLTV, origin_node.logger, &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), expected_route.len()); for (node, hop) in expected_route.iter().zip(route.paths[0].iter()) { diff --git a/lightning/src/ln/functional_tests.rs b/lightning/src/ln/functional_tests.rs index 00db1f5ca..ead2a8e2f 100644 --- a/lightning/src/ln/functional_tests.rs +++ b/lightning/src/ln/functional_tests.rs @@ -16,7 +16,7 @@ use chain::{Confirm, Listen, Watch}; use chain::channelmonitor; use chain::channelmonitor::{ChannelMonitor, CLTV_CLAIM_BUFFER, LATENCY_GRACE_PERIOD_BLOCKS, ANTI_REORG_DELAY}; use chain::transaction::OutPoint; -use chain::keysinterface::BaseSign; +use chain::keysinterface::{BaseSign, KeysInterface}; use ln::{PaymentPreimage, PaymentSecret, PaymentHash}; use ln::channel::{commitment_tx_base_weight, COMMITMENT_TX_WEIGHT_PER_HTLC, CONCURRENT_INBOUND_HTLC_FEE_BUFFER, FEE_SPIKE_BUFFER_FEE_INCREASE_MULTIPLE, MIN_AFFORDABLE_HTLC_COUNT}; use ln::channelmanager::{ChannelManager, ChannelManagerReadArgs, PaymentId, RAACommitmentOrder, PaymentSendFailure, BREAKDOWN_TIMEOUT, MIN_CLTV_EXPIRY_DELTA, PAYMENT_EXPIRY_BLOCKS }; @@ -7441,8 +7441,9 @@ fn test_check_htlc_underpaying() { create_announced_chan_between_nodes(&nodes, 0, 1, InitFeatures::known(), InitFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known()); - let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, nodes[0].network_graph, None, 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer).unwrap(); + let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), None, 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); let (_, our_payment_hash, _) = get_payment_preimage_hash!(nodes[0]); let our_payment_secret = nodes[1].node.create_inbound_payment_for_hash(our_payment_hash, Some(100_000), 7200).unwrap(); nodes[0].node.send_payment(&route, our_payment_hash, &Some(our_payment_secret)).unwrap(); @@ -7844,12 +7845,13 @@ fn test_bump_penalty_txn_on_revoked_htlcs() { // Lock HTLC in both directions (using a slightly lower CLTV delay to provide timely RBF bumps) let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); - let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph, None, - 3_000_000, 50, nodes[0].logger, &scorer).unwrap(); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); + let route = get_route(&nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), None, + 3_000_000, 50, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); let payment_preimage = send_along_route(&nodes[0], route, &[&nodes[1]], 3_000_000).0; let payment_params = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id()).with_features(InvoiceFeatures::known()); - let route = get_route(&nodes[1].node.get_our_node_id(), &payment_params, nodes[1].network_graph, None, - 3_000_000, 50, nodes[0].logger, &scorer).unwrap(); + let route = get_route(&nodes[1].node.get_our_node_id(), &payment_params, &nodes[1].network_graph.read_only(), None, + 3_000_000, 50, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); send_along_route(&nodes[1], route, &[&nodes[0]], 3_000_000); let revoked_local_txn = get_local_commitment_txn!(nodes[1], chan.2); @@ -9618,10 +9620,11 @@ fn test_dup_htlc_second_fail_panic() { let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()) .with_features(InvoiceFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = get_route( - &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph, + &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), Some(&nodes[0].node.list_usable_channels().iter().collect::>()), - 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer).unwrap(); + 10_000, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); let (_, our_payment_hash, our_payment_secret) = get_payment_preimage_hash!(&nodes[1]); @@ -9690,7 +9693,8 @@ fn test_keysend_payments_to_public_node() { final_cltv_expiry_delta: 40, }; let scorer = test_utils::TestScorer::with_penalty(0); - let route = find_route(&payer_pubkey, &route_params, network_graph, None, nodes[0].logger, &scorer).unwrap(); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); + let route = find_route(&payer_pubkey, &route_params, network_graph, None, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); let test_preimage = PaymentPreimage([42; 32]); let (payment_hash, _) = nodes[0].node.send_spontaneous_payment(&route, Some(test_preimage)).unwrap(); @@ -9724,9 +9728,10 @@ fn test_keysend_payments_to_private_node() { let network_graph = nodes[0].network_graph; let first_hops = nodes[0].node.list_usable_channels(); let scorer = test_utils::TestScorer::with_penalty(0); + let random_seed_bytes = chanmon_cfgs[1].keys_manager.get_secure_random_bytes(); let route = find_route( &payer_pubkey, &route_params, network_graph, Some(&first_hops.iter().collect::>()), - nodes[0].logger, &scorer + nodes[0].logger, &scorer, &random_seed_bytes ).unwrap(); let test_preimage = PaymentPreimage([42; 32]); diff --git a/lightning/src/ln/onion_route_tests.rs b/lightning/src/ln/onion_route_tests.rs index d67abeefd..dbdb76092 100644 --- a/lightning/src/ln/onion_route_tests.rs +++ b/lightning/src/ln/onion_route_tests.rs @@ -610,10 +610,11 @@ macro_rules! get_phantom_route { } ])]); let scorer = test_utils::TestScorer::with_penalty(0); + let network_graph = $nodes[0].network_graph.read_only(); (get_route( - &$nodes[0].node.get_our_node_id(), &payment_params, $nodes[0].network_graph, + &$nodes[0].node.get_our_node_id(), &payment_params, &network_graph, Some(&$nodes[0].node.list_usable_channels().iter().collect::>()), - $amt, TEST_FINAL_CLTV, $nodes[0].logger, &scorer + $amt, TEST_FINAL_CLTV, $nodes[0].logger, &scorer, &[0u8; 32] ).unwrap(), phantom_route_hint.phantom_scid) } }} diff --git a/lightning/src/ln/payment_tests.rs b/lightning/src/ln/payment_tests.rs index 6557295b5..bae9a2914 100644 --- a/lightning/src/ln/payment_tests.rs +++ b/lightning/src/ln/payment_tests.rs @@ -14,6 +14,7 @@ use chain::{ChannelMonitorUpdateErr, Confirm, Listen, Watch}; use chain::channelmonitor::{ANTI_REORG_DELAY, ChannelMonitor, LATENCY_GRACE_PERIOD_BLOCKS}; use chain::transaction::OutPoint; +use chain::keysinterface::KeysInterface; use ln::channelmanager::{BREAKDOWN_TIMEOUT, ChannelManager, ChannelManagerReadArgs, PaymentId, PaymentSendFailure}; use ln::features::{InitFeatures, InvoiceFeatures}; use ln::msgs; @@ -27,6 +28,7 @@ use util::ser::{ReadableArgs, Writeable}; use io; use bitcoin::{Block, BlockHeader, BlockHash}; +use bitcoin::network::constants::Network; use prelude::*; @@ -730,10 +732,12 @@ fn get_ldk_payment_preimage() { let payment_params = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()) .with_features(InvoiceFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = get_route( - &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph, + &nodes[0].node.get_our_node_id(), &payment_params, &nodes[0].network_graph.read_only(), Some(&nodes[0].node.list_usable_channels().iter().collect::>()), - amt_msat, TEST_FINAL_CLTV, nodes[0].logger, &scorer).unwrap(); + amt_msat, TEST_FINAL_CLTV, nodes[0].logger, &scorer, &random_seed_bytes).unwrap(); let _payment_id = nodes[0].node.send_payment(&route, payment_hash, &Some(payment_secret)).unwrap(); check_added_monitors!(nodes[0], 1); diff --git a/lightning/src/ln/shutdown_tests.rs b/lightning/src/ln/shutdown_tests.rs index a687df888..cd0f77448 100644 --- a/lightning/src/ln/shutdown_tests.rs +++ b/lightning/src/ln/shutdown_tests.rs @@ -25,6 +25,7 @@ use util::config::UserConfig; use bitcoin::blockdata::script::Builder; use bitcoin::blockdata::opcodes; +use bitcoin::network::constants::Network; use regex; @@ -77,6 +78,8 @@ fn updates_shutdown_wait() { let chan_2 = create_announced_chan_between_nodes(&nodes, 1, 2, InitFeatures::known(), InitFeatures::known()); let logger = test_utils::TestLogger::new(); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let (payment_preimage, _, _) = route_payment(&nodes[0], &[&nodes[1], &nodes[2]], 100000); @@ -92,9 +95,9 @@ fn updates_shutdown_wait() { let (_, payment_hash, payment_secret) = get_payment_preimage_hash!(nodes[0]); let payment_params_1 = PaymentParameters::from_node_id(nodes[1].node.get_our_node_id()).with_features(InvoiceFeatures::known()); - let route_1 = get_route(&nodes[0].node.get_our_node_id(), &payment_params_1, nodes[0].network_graph, None, 100000, TEST_FINAL_CLTV, &logger, &scorer).unwrap(); + let route_1 = get_route(&nodes[0].node.get_our_node_id(), &payment_params_1, &nodes[0].network_graph.read_only(), None, 100000, TEST_FINAL_CLTV, &logger, &scorer, &random_seed_bytes).unwrap(); let payment_params_2 = PaymentParameters::from_node_id(nodes[0].node.get_our_node_id()).with_features(InvoiceFeatures::known()); - let route_2 = get_route(&nodes[1].node.get_our_node_id(), &payment_params_2, nodes[1].network_graph, None, 100000, TEST_FINAL_CLTV, &logger, &scorer).unwrap(); + let route_2 = get_route(&nodes[1].node.get_our_node_id(), &payment_params_2, &nodes[1].network_graph.read_only(), None, 100000, TEST_FINAL_CLTV, &logger, &scorer, &random_seed_bytes).unwrap(); unwrap_send_err!(nodes[0].node.send_payment(&route_1, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); unwrap_send_err!(nodes[1].node.send_payment(&route_2, payment_hash, &Some(payment_secret)), true, APIError::ChannelUnavailable {..}, {}); diff --git a/lightning/src/routing/network_graph.rs b/lightning/src/routing/network_graph.rs index 5a84f35c2..a5e497bb1 100644 --- a/lightning/src/routing/network_graph.rs +++ b/lightning/src/routing/network_graph.rs @@ -674,6 +674,21 @@ impl ChannelInfo { }; Some((DirectedChannelInfo { channel: self, direction }, source)) } + + /// Returns a [`DirectedChannelInfo`] for the channel directed from the given `source` to a + /// returned `target`, or `None` if `source` is not one of the channel's counterparties. + pub fn as_directed_from(&self, source: &NodeId) -> Option<(DirectedChannelInfo, &NodeId)> { + let (direction, target) = { + if source == &self.node_one { + (self.one_to_two.as_ref(), &self.node_two) + } else if source == &self.node_two { + (self.two_to_one.as_ref(), &self.node_one) + } else { + return None; + } + }; + Some((DirectedChannelInfo { channel: self, direction }, target)) + } } impl fmt::Display for ChannelInfo { diff --git a/lightning/src/routing/router.rs b/lightning/src/routing/router.rs index 1360aa3dd..d6aef902f 100644 --- a/lightning/src/routing/router.rs +++ b/lightning/src/routing/router.rs @@ -18,9 +18,10 @@ use ln::channelmanager::ChannelDetails; use ln::features::{ChannelFeatures, InvoiceFeatures, NodeFeatures}; use ln::msgs::{DecodeError, ErrorAction, LightningError, MAX_VALUE_MSAT}; use routing::scoring::Score; -use routing::network_graph::{DirectedChannelInfoWithUpdate, EffectiveCapacity, NetworkGraph, NodeId, RoutingFees}; +use routing::network_graph::{DirectedChannelInfoWithUpdate, EffectiveCapacity, NetworkGraph, ReadOnlyNetworkGraph, NodeId, RoutingFees}; use util::ser::{Writeable, Readable}; use util::logger::{Level, Logger}; +use util::chacha20::ChaCha20; use io; use prelude::*; @@ -176,6 +177,9 @@ impl_writeable_tlv_based!(RouteParameters, { /// Maximum total CTLV difference we allow for a full payment path. pub const DEFAULT_MAX_TOTAL_CLTV_EXPIRY_DELTA: u32 = 1008; +/// The median hop CLTV expiry delta currently seen in the network. +const MEDIAN_HOP_CLTV_EXPIRY_DELTA: u32 = 40; + /// The recipient of a payment. #[derive(Clone, Debug, Hash, PartialEq, Eq)] pub struct PaymentParameters { @@ -258,7 +262,6 @@ impl PaymentParameters { #[derive(Clone, Debug, Hash, Eq, PartialEq)] pub struct RouteHint(pub Vec); - impl Writeable for RouteHint { fn write(&self, writer: &mut W) -> Result<(), io::Error> { (self.0.len() as u64).write(writer)?; @@ -623,19 +626,26 @@ fn compute_fees(amount_msat: u64, channel_fees: RoutingFees) -> Option { /// [`Event::PaymentPathFailed`]: crate::util::events::Event::PaymentPathFailed pub fn find_route( our_node_pubkey: &PublicKey, route_params: &RouteParameters, network: &NetworkGraph, - first_hops: Option<&[&ChannelDetails]>, logger: L, scorer: &S + first_hops: Option<&[&ChannelDetails]>, logger: L, scorer: &S, random_seed_bytes: &[u8; 32] ) -> Result where L::Target: Logger { - get_route( - our_node_pubkey, &route_params.payment_params, network, first_hops, route_params.final_value_msat, - route_params.final_cltv_expiry_delta, logger, scorer - ) + let network_graph = network.read_only(); + match get_route( + our_node_pubkey, &route_params.payment_params, &network_graph, first_hops, route_params.final_value_msat, + route_params.final_cltv_expiry_delta, logger, scorer, random_seed_bytes + ) { + Ok(mut route) => { + add_random_cltv_offset(&mut route, &route_params.payment_params, &network_graph, random_seed_bytes); + Ok(route) + }, + Err(err) => Err(err), + } } pub(crate) fn get_route( - our_node_pubkey: &PublicKey, payment_params: &PaymentParameters, network: &NetworkGraph, - first_hops: Option<&[&ChannelDetails]>, final_value_msat: u64, final_cltv_expiry_delta: u32, - logger: L, scorer: &S + our_node_pubkey: &PublicKey, payment_params: &PaymentParameters, network_graph: &ReadOnlyNetworkGraph, + first_hops: Option<&[&ChannelDetails]>, final_value_msat: u64, final_cltv_expiry_delta: u32, + logger: L, scorer: &S, _random_seed_bytes: &[u8; 32] ) -> Result where L::Target: Logger { let payee_node_id = NodeId::from_pubkey(&payment_params.payee_pubkey); @@ -672,12 +682,13 @@ where L::Target: Logger { // - OR if we could not construct a new path. Any next attempt will fail too. // Otherwise, repeat step 2. // 4. See if we managed to collect paths which aggregately are able to transfer target value - // (not recommended value). If yes, proceed. If not, fail routing. - // 5. Randomly combine paths into routes having enough to fulfill the payment. (TODO: knapsack) - // 6. Of all the found paths, select only those with the lowest total fee. - // 7. The last path in every selected route is likely to be more than we need. + // (not recommended value). + // 5. If yes, proceed. If not, fail routing. + // 6. Randomly combine paths into routes having enough to fulfill the payment. (TODO: knapsack) + // 7. Of all the found paths, select only those with the lowest total fee. + // 8. The last path in every selected route is likely to be more than we need. // Reduce its value-to-transfer and recompute fees. - // 8. Choose the best route by the lowest total fee. + // 9. Choose the best route by the lowest total fee. // As for the actual search algorithm, // we do a payee-to-payer pseudo-Dijkstra's sorting by each node's distance from the payee @@ -721,7 +732,6 @@ where L::Target: Logger { // to use as the A* heuristic beyond just the cost to get one node further than the current // one. - let network_graph = network.read_only(); let network_channels = network_graph.channels(); let network_nodes = network_graph.nodes(); @@ -853,7 +863,12 @@ where L::Target: Logger { let contributes_sufficient_value = available_value_contribution_msat >= minimal_value_contribution_msat; // Do not consider candidates that exceed the maximum total cltv expiry limit. - let max_total_cltv_expiry_delta = payment_params.max_total_cltv_expiry_delta; + // In order to already account for some of the privacy enhancing random CLTV + // expiry delta offset we add on top later, we subtract a rough estimate + // (2*MEDIAN_HOP_CLTV_EXPIRY_DELTA) here. + let max_total_cltv_expiry_delta = payment_params.max_total_cltv_expiry_delta + .checked_sub(2*MEDIAN_HOP_CLTV_EXPIRY_DELTA) + .unwrap_or(payment_params.max_total_cltv_expiry_delta); let hop_total_cltv_delta = ($next_hops_cltv_delta as u32) .checked_add($candidate.cltv_expiry_delta()) .unwrap_or(u32::max_value()); @@ -1535,17 +1550,92 @@ where L::Target: Logger { Ok(route) } +// When an adversarial intermediary node observes a payment, it may be able to infer its +// destination, if the remaining CLTV expiry delta exactly matches a feasible path in the network +// graph. In order to improve privacy, this method obfuscates the CLTV expiry deltas along the +// payment path by adding a randomized 'shadow route' offset to the final hop. +fn add_random_cltv_offset(route: &mut Route, payment_params: &PaymentParameters, network_graph: &ReadOnlyNetworkGraph, random_seed_bytes: &[u8; 32]) { + let network_channels = network_graph.channels(); + let network_nodes = network_graph.nodes(); + + for path in route.paths.iter_mut() { + let mut shadow_ctlv_expiry_delta_offset: u32 = 0; + + // Choose the last publicly known node as the starting point for the random walk + if let Some(starting_hop) = path.iter().rev().find(|h| network_nodes.contains_key(&NodeId::from_pubkey(&h.pubkey))) { + let mut cur_node_id = NodeId::from_pubkey(&starting_hop.pubkey); + + // Init PRNG with path nonce + let mut path_nonce = [0u8; 12]; + path_nonce.copy_from_slice(&cur_node_id.as_slice()[..12]); + let mut prng = ChaCha20::new(random_seed_bytes, &path_nonce); + let mut random_path_bytes = [0u8; ::core::mem::size_of::()]; + + // Pick a random path length in [1 .. 3] + prng.process_in_place(&mut random_path_bytes); + let random_walk_length = usize::from_be_bytes(random_path_bytes).wrapping_rem(3).wrapping_add(1); + + for _random_hop in 0..random_walk_length { + if let Some(cur_node) = network_nodes.get(&cur_node_id) { + // Randomly choose the next hop + prng.process_in_place(&mut random_path_bytes); + if let Some(random_channel) = usize::from_be_bytes(random_path_bytes).checked_rem(cur_node.channels.len()) + .and_then(|index| cur_node.channels.get(index)) + .and_then(|id| network_channels.get(id)) { + random_channel.as_directed_from(&cur_node_id).map(|(dir_info, next_id)| { + dir_info.direction().map(|channel_update_info| + shadow_ctlv_expiry_delta_offset = shadow_ctlv_expiry_delta_offset + .checked_add(channel_update_info.cltv_expiry_delta.into()) + .unwrap_or(shadow_ctlv_expiry_delta_offset)); + cur_node_id = *next_id; + }); + } + } + } + } else { + // If the entire path is private, choose a random offset from multiples of + // MEDIAN_HOP_CLTV_EXPIRY_DELTA + let mut prng = ChaCha20::new(random_seed_bytes, &[0u8; 8]); + let mut random_bytes = [0u8; 4]; + prng.process_in_place(&mut random_bytes); + let random_walk_length = u32::from_be_bytes(random_bytes).wrapping_rem(3).wrapping_add(1); + shadow_ctlv_expiry_delta_offset = random_walk_length * MEDIAN_HOP_CLTV_EXPIRY_DELTA; + } + + // Limit the total offset to reduce the worst-case locked liquidity timevalue + const MAX_SHADOW_CLTV_EXPIRY_DELTA_OFFSET: u32 = 3*144; + shadow_ctlv_expiry_delta_offset = cmp::min(shadow_ctlv_expiry_delta_offset, MAX_SHADOW_CLTV_EXPIRY_DELTA_OFFSET); + + // Limit the offset so we never exceed the max_total_cltv_expiry_delta. To improve plausibility, + // we choose the limit to be the largest possible multiple of MEDIAN_HOP_CLTV_EXPIRY_DELTA. + let path_total_cltv_expiry_delta: u32 = path.iter().map(|h| h.cltv_expiry_delta).sum(); + let mut max_path_offset = payment_params.max_total_cltv_expiry_delta - path_total_cltv_expiry_delta; + max_path_offset = cmp::max( + max_path_offset - (max_path_offset % MEDIAN_HOP_CLTV_EXPIRY_DELTA), + max_path_offset % MEDIAN_HOP_CLTV_EXPIRY_DELTA); + shadow_ctlv_expiry_delta_offset = cmp::min(shadow_ctlv_expiry_delta_offset, max_path_offset); + + // Add 'shadow' CLTV offset to the final hop + if let Some(last_hop) = path.last_mut() { + last_hop.cltv_expiry_delta = last_hop.cltv_expiry_delta + .checked_add(shadow_ctlv_expiry_delta_offset).unwrap_or(last_hop.cltv_expiry_delta); + } + } +} + #[cfg(test)] mod tests { use routing::network_graph::{NetworkGraph, NetGraphMsgHandler, NodeId}; - use routing::router::{get_route, PaymentParameters, Route, RouteHint, RouteHintHop, RouteHop, RoutingFees}; + use routing::router::{get_route, add_random_cltv_offset, PaymentParameters, Route, RouteHint, RouteHintHop, RouteHop, RoutingFees, DEFAULT_MAX_TOTAL_CLTV_EXPIRY_DELTA}; use routing::scoring::Score; use chain::transaction::OutPoint; + use chain::keysinterface::KeysInterface; use ln::features::{ChannelFeatures, InitFeatures, InvoiceFeatures, NodeFeatures}; use ln::msgs::{ErrorAction, LightningError, OptionalField, UnsignedChannelAnnouncement, ChannelAnnouncement, RoutingMessageHandler, NodeAnnouncement, UnsignedNodeAnnouncement, ChannelUpdate, UnsignedChannelUpdate}; use ln::channelmanager; use util::test_utils; + use util::chacha20::ChaCha20; use util::ser::Writeable; #[cfg(c_bindings)] use util::ser::Writer; @@ -2013,14 +2103,16 @@ mod tests { let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Simple route to 2 via 1 - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, None, 0, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 0, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Cannot send a payment of 0 msat"); } else { panic!(); } - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2044,16 +2136,19 @@ mod tests { let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Simple route to 2 via 1 let our_chans = vec![get_channel_details(Some(2), our_id, InitFeatures::from_le_bytes(vec![0b11]), 100000)]; - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = + get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "First hop cannot have our_node_pubkey as a destination."); } else { panic!(); } - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); } @@ -2063,6 +2158,8 @@ mod tests { let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Simple route to 2 via 1 @@ -2159,7 +2256,7 @@ mod tests { }); // Not possible to send 199_999_999, because the minimum on channel=2 is 200_000_000. - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, None, 199_999_999, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 199_999_999, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a path to the given destination"); } else { panic!(); } @@ -2178,7 +2275,7 @@ mod tests { }); // A payment above the minimum should pass - let route = get_route(&our_id, &payment_params, &network_graph, None, 199_999_999, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 199_999_999, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); } @@ -2188,6 +2285,8 @@ mod tests { let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // A route to node#2 via two paths. // One path allows transferring 35-40 sats, another one also allows 35-40 sats. @@ -2257,7 +2356,7 @@ mod tests { excess_data: Vec::new() }); - let route = get_route(&our_id, &payment_params, &network_graph, None, 60_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 60_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); // Overpay fees to hit htlc_minimum_msat. let overpaid_fees = route.paths[0][0].fee_msat + route.paths[1][0].fee_msat; // TODO: this could be better balanced to overpay 10k and not 15k. @@ -2302,14 +2401,14 @@ mod tests { excess_data: Vec::new() }); - let route = get_route(&our_id, &payment_params, &network_graph, None, 60_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 60_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); // Fine to overpay for htlc_minimum_msat if it allows us to save fee. assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0][0].short_channel_id, 12); let fees = route.paths[0][0].fee_msat; assert_eq!(fees, 5_000); - let route = get_route(&our_id, &payment_params, &network_graph, None, 50_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 50_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); // Not fine to overpay for htlc_minimum_msat if it requires paying more than fee on // the other channel. assert_eq!(route.paths.len(), 1); @@ -2324,6 +2423,8 @@ mod tests { let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // // Disable channels 4 and 12 by flags=2 update_channel(&net_graph_msg_handler, &secp_ctx, &privkeys[1], UnsignedChannelUpdate { @@ -2352,13 +2453,13 @@ mod tests { }); // If all the channels require some features we don't understand, route should fail - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a path to the given destination"); } else { panic!(); } // If we specify a channel to node7, that overrides our local channel view and that gets used let our_chans = vec![get_channel_details(Some(42), nodes[7].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; - let route = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); assert_eq!(route.paths[0][0].pubkey, nodes[7]); @@ -2382,6 +2483,8 @@ mod tests { let (_, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[2]); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Disable nodes 1, 2, and 8 by requiring unknown feature bits let unknown_features = NodeFeatures::known().set_unknown_feature_required(); @@ -2390,13 +2493,13 @@ mod tests { add_or_update_node(&net_graph_msg_handler, &secp_ctx, &privkeys[7], unknown_features.clone(), 1); // If all nodes require some features we don't understand, route should fail - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a path to the given destination"); } else { panic!(); } // If we specify a channel to node7, that overrides our local channel view and that gets used let our_chans = vec![get_channel_details(Some(42), nodes[7].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; - let route = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); assert_eq!(route.paths[0][0].pubkey, nodes[7]); @@ -2423,10 +2526,12 @@ mod tests { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Route to 1 via 2 and 3 because our channel to 1 is disabled let payment_params = PaymentParameters::from_node_id(nodes[0]); - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 3); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2453,7 +2558,7 @@ mod tests { // If we specify a channel to node7, that overrides our local channel view and that gets used let payment_params = PaymentParameters::from_node_id(nodes[2]); let our_chans = vec![get_channel_details(Some(42), nodes[7].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; - let route = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); assert_eq!(route.paths[0][0].pubkey, nodes[7]); @@ -2552,6 +2657,8 @@ mod tests { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Simple test across 2, 3, 5, and 4 via a last_hop channel // Tests the behaviour when the RouteHint contains a suboptimal hop. @@ -2574,13 +2681,13 @@ mod tests { invalid_last_hops.push(invalid_last_hop); { let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(invalid_last_hops); - if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer) { + if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Route hint cannot have the payee as the source."); } else { panic!(); } } let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops_multi_private_channels(&nodes)); - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 5); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2651,10 +2758,12 @@ mod tests { let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(empty_last_hop(&nodes)); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Test handling of an empty RouteHint passed in Invoice. - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 5); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2729,6 +2838,8 @@ mod tests { let last_hops = multi_hop_last_hops_hint([nodes[2], nodes[3]]); let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops.clone()); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Test through channels 2, 3, 0xff00, 0xff01. // Test shows that multiple hop hints are considered. @@ -2758,7 +2869,7 @@ mod tests { excess_data: Vec::new() }); - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 4); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2830,7 +2941,7 @@ mod tests { excess_data: Vec::new() }); - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &[42u8; 32]).unwrap(); assert_eq!(route.paths[0].len(), 4); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2907,10 +3018,12 @@ mod tests { let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops_with_public_channel(&nodes)); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // This test shows that public routes can be present in the invoice // which would be handled in the same manner. - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 5); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -2956,12 +3069,14 @@ mod tests { let (secp_ctx, network_graph, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // Simple test with outbound channel to 4 to test that last_hops and first_hops connect let our_chans = vec![get_channel_details(Some(42), nodes[3].clone(), InitFeatures::from_le_bytes(vec![0b11]), 250_000_000)]; let mut last_hops = last_hops(&nodes); let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops.clone()); - let route = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 2); assert_eq!(route.paths[0][0].pubkey, nodes[3]); @@ -2982,7 +3097,7 @@ mod tests { // Revert to via 6 as the fee on 8 goes up let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops); - let route = get_route(&our_id, &payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 4); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -3016,7 +3131,7 @@ mod tests { assert_eq!(route.paths[0][3].channel_features.le_flags(), &Vec::::new()); // We can't learn any flags from invoices, sadly // ...but still use 8 for larger payments as 6 has a variable feerate - let route = get_route(&our_id, &payment_params, &network_graph, None, 2000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 2000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths[0].len(), 5); assert_eq!(route.paths[0][0].pubkey, nodes[1]); @@ -3077,7 +3192,10 @@ mod tests { let payment_params = PaymentParameters::from_node_id(target_node_id).with_route_hints(vec![last_hops]); let our_chans = vec![get_channel_details(Some(42), middle_node_id, InitFeatures::from_le_bytes(vec![0b11]), outbound_capacity_msat)]; let scorer = test_utils::TestScorer::with_penalty(0); - get_route(&source_node_id, &payment_params, &NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash()), Some(&our_chans.iter().collect::>()), route_val, 42, &test_utils::TestLogger::new(), &scorer) + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); + get_route(&source_node_id, &payment_params, &NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash()).read_only(), + Some(&our_chans.iter().collect::>()), route_val, 42, &test_utils::TestLogger::new(), &scorer, &random_seed_bytes) } #[test] @@ -3131,6 +3249,8 @@ mod tests { let (secp_ctx, network_graph, mut net_graph_msg_handler, chain_monitor, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We will use a simple single-path route from @@ -3195,14 +3315,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 250_000_001, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 250_000_001, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route an exact amount we have should be fine. - let route = get_route(&our_id, &payment_params, &network_graph, None, 250_000_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 250_000_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let path = route.paths.last().unwrap(); assert_eq!(path.len(), 2); @@ -3231,14 +3351,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 200_000_001, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 200_000_001, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route an exact amount we have should be fine. - let route = get_route(&our_id, &payment_params, &network_graph, Some(&our_chans.iter().collect::>()), 200_000_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&our_chans.iter().collect::>()), 200_000_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let path = route.paths.last().unwrap(); assert_eq!(path.len(), 2); @@ -3278,14 +3398,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 15_001, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 15_001, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route an exact amount we have should be fine. - let route = get_route(&our_id, &payment_params, &network_graph, None, 15_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 15_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let path = route.paths.last().unwrap(); assert_eq!(path.len(), 2); @@ -3348,14 +3468,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 15_001, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 15_001, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route an exact amount we have should be fine. - let route = get_route(&our_id, &payment_params, &network_graph, None, 15_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 15_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let path = route.paths.last().unwrap(); assert_eq!(path.len(), 2); @@ -3380,14 +3500,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 10_001, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 10_001, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route an exact amount we have should be fine. - let route = get_route(&our_id, &payment_params, &network_graph, None, 10_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 10_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let path = route.paths.last().unwrap(); assert_eq!(path.len(), 2); @@ -3403,6 +3523,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // Path via {node7, node2, node4} is channels {12, 13, 6, 11}. @@ -3489,14 +3611,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 60_000, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 60_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route 49 sats (just a bit below the capacity). - let route = get_route(&our_id, &payment_params, &network_graph, None, 49_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 49_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -3509,7 +3631,7 @@ mod tests { { // Attempt to route an exact amount is also fine - let route = get_route(&our_id, &payment_params, &network_graph, None, 50_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 50_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -3526,6 +3648,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]); // Path via node0 is channels {1, 3}. Limit them to 100 and 50 sats (total limit 50). @@ -3555,7 +3679,7 @@ mod tests { }); { - let route = get_route(&our_id, &payment_params, &network_graph, None, 50_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 50_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -3572,6 +3696,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: @@ -3665,7 +3791,7 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 300_000, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 300_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } @@ -3673,7 +3799,7 @@ mod tests { { // Now, attempt to route 250 sats (just a bit below the capacity). // Our algorithm should provide us with these 3 paths. - let route = get_route(&our_id, &payment_params, &network_graph, None, 250_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 250_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 3); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -3686,7 +3812,7 @@ mod tests { { // Attempt to route an exact amount is also fine - let route = get_route(&our_id, &payment_params, &network_graph, None, 290_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 290_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 3); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -3703,6 +3829,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: @@ -3839,7 +3967,7 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 350_000, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 350_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } @@ -3847,7 +3975,7 @@ mod tests { { // Now, attempt to route 300 sats (exact amount we can route). // Our algorithm should provide us with these 3 paths, 100 sats each. - let route = get_route(&our_id, &payment_params, &network_graph, None, 300_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 300_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 3); let mut total_amount_paid_msat = 0; @@ -3865,6 +3993,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // This test checks that if we have two cheaper paths and one more expensive path, @@ -4005,7 +4135,7 @@ mod tests { { // Now, attempt to route 180 sats. // Our algorithm should provide us with these 2 paths. - let route = get_route(&our_id, &payment_params, &network_graph, None, 180_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 180_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 2); let mut total_value_transferred_msat = 0; @@ -4032,6 +4162,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[3]).with_features(InvoiceFeatures::known()); // We need a route consisting of 2 paths: @@ -4173,14 +4305,14 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 210_000, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 210_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } { // Now, attempt to route 200 sats (exact amount we can route). - let route = get_route(&our_id, &payment_params, &network_graph, None, 200_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 200_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 2); let mut total_amount_paid_msat = 0; @@ -4211,6 +4343,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(PublicKey::from_slice(&[02; 33]).unwrap()).with_features(InvoiceFeatures::known()) .with_route_hints(vec![RouteHint(vec![RouteHintHop { src_node_id: nodes[2], @@ -4277,7 +4411,7 @@ mod tests { // Get a route for 100 sats and check that we found the MPP route no problem and didn't // overpay at all. - let route = get_route(&our_id, &payment_params, &network_graph, None, 100_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 2); // Paths are somewhat randomly ordered, but: // * the first is channel 2 (1 msat fee) -> channel 4 -> channel 42 @@ -4299,6 +4433,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We need a route consisting of 3 paths: @@ -4391,7 +4527,7 @@ mod tests { { // Attempt to route more than available results in a failure. if let Err(LightningError{err, action: ErrorAction::IgnoreError}) = get_route( - &our_id, &payment_params, &network_graph, None, 150_000, 42, Arc::clone(&logger), &scorer) { + &our_id, &payment_params, &network_graph.read_only(), None, 150_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { assert_eq!(err, "Failed to find a sufficient route to the given destination"); } else { panic!(); } } @@ -4399,7 +4535,7 @@ mod tests { { // Now, attempt to route 125 sats (just a bit below the capacity of 3 channels). // Our algorithm should provide us with these 3 paths. - let route = get_route(&our_id, &payment_params, &network_graph, None, 125_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 125_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 3); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -4412,7 +4548,7 @@ mod tests { { // Attempt to route without the last small cheap channel - let route = get_route(&our_id, &payment_params, &network_graph, None, 90_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 90_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 2); let mut total_amount_paid_msat = 0; for path in &route.paths { @@ -4452,10 +4588,12 @@ mod tests { // "previous hop" being set to node 3, creating a loop in the path. let secp_ctx = Secp256k1::new(); let logger = Arc::new(test_utils::TestLogger::new()); - let network_graph = Arc::new(NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash())); - let net_graph_msg_handler = NetGraphMsgHandler::new(Arc::clone(&network_graph), None, Arc::clone(&logger)); + let network = Arc::new(NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash())); + let net_graph_msg_handler = NetGraphMsgHandler::new(Arc::clone(&network), None, Arc::clone(&logger)); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[6]); add_channel(&net_graph_msg_handler, &secp_ctx, &our_privkey, &privkeys[1], ChannelFeatures::from_le_bytes(id_to_feature_flags(6)), 6); @@ -4549,7 +4687,7 @@ mod tests { { // Now ensure the route flows simply over nodes 1 and 4 to 6. - let route = get_route(&our_id, &payment_params, &network_graph, None, 10_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network.read_only(), None, 10_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), 3); @@ -4585,6 +4723,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, _, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]); // We modify the graph to set the htlc_maximum of channel 2 to below the value we wish to @@ -4618,7 +4758,7 @@ mod tests { { // Now, attempt to route 90 sats, which is exactly 90 sats at the last hop, plus the // 200% fee charged channel 13 in the 1-to-2 direction. - let route = get_route(&our_id, &payment_params, &network_graph, None, 90_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 90_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), 2); @@ -4647,6 +4787,8 @@ mod tests { let (secp_ctx, network_graph, net_graph_msg_handler, _, logger) = build_graph(); let (our_privkey, our_id, privkeys, nodes) = get_nodes(&secp_ctx); let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let payment_params = PaymentParameters::from_node_id(nodes[2]).with_features(InvoiceFeatures::known()); // We modify the graph to set the htlc_minimum of channel 2 and 4 as needed - channel 2 @@ -4681,7 +4823,7 @@ mod tests { // Now, attempt to route 90 sats, hitting the htlc_minimum on channel 4, but // overshooting the htlc_maximum on channel 2. Thus, we should pick the (absurdly // expensive) channels 12-13 path. - let route = get_route(&our_id, &payment_params, &network_graph, None, 90_000, 42, Arc::clone(&logger), &scorer).unwrap(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 90_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), 2); @@ -4715,12 +4857,14 @@ mod tests { let network_graph = NetworkGraph::new(genesis_block(Network::Testnet).header.block_hash()); let scorer = test_utils::TestScorer::with_penalty(0); let payment_params = PaymentParameters::from_node_id(nodes[0]).with_features(InvoiceFeatures::known()); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); { - let route = get_route(&our_id, &payment_params, &network_graph, Some(&[ + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&[ &get_channel_details(Some(3), nodes[0], InitFeatures::known(), 200_000), &get_channel_details(Some(2), nodes[0], InitFeatures::known(), 10_000), - ]), 100_000, 42, Arc::clone(&logger), &scorer).unwrap(); + ]), 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 1); assert_eq!(route.paths[0].len(), 1); @@ -4729,10 +4873,10 @@ mod tests { assert_eq!(route.paths[0][0].fee_msat, 100_000); } { - let route = get_route(&our_id, &payment_params, &network_graph, Some(&[ + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), Some(&[ &get_channel_details(Some(3), nodes[0], InitFeatures::known(), 50_000), &get_channel_details(Some(2), nodes[0], InitFeatures::known(), 50_000), - ]), 100_000, 42, Arc::clone(&logger), &scorer).unwrap(); + ]), 100_000, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); assert_eq!(route.paths.len(), 2); assert_eq!(route.paths[0].len(), 1); assert_eq!(route.paths[1].len(), 1); @@ -4755,9 +4899,11 @@ mod tests { // Without penalizing each hop 100 msats, a longer path with lower fees is chosen. let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = get_route( - &our_id, &payment_params, &network_graph, None, 100, 42, - Arc::clone(&logger), &scorer + &our_id, &payment_params, &network_graph.read_only(), None, 100, 42, + Arc::clone(&logger), &scorer, &random_seed_bytes ).unwrap(); let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::>(); @@ -4769,8 +4915,8 @@ mod tests { // from nodes[2] rather than channel 6, 11, and 8, even though the longer path is cheaper. let scorer = test_utils::TestScorer::with_penalty(100); let route = get_route( - &our_id, &payment_params, &network_graph, None, 100, 42, - Arc::clone(&logger), &scorer + &our_id, &payment_params, &network_graph.read_only(), None, 100, 42, + Arc::clone(&logger), &scorer, &random_seed_bytes ).unwrap(); let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::>(); @@ -4816,15 +4962,18 @@ mod tests { #[test] fn avoids_routing_through_bad_channels_and_nodes() { - let (secp_ctx, network_graph, _, _, logger) = build_graph(); + let (secp_ctx, network, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)); + let network_graph = network.read_only(); // A path to nodes[6] exists when no penalties are applied to any channel. let scorer = test_utils::TestScorer::with_penalty(0); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); let route = get_route( &our_id, &payment_params, &network_graph, None, 100, 42, - Arc::clone(&logger), &scorer + Arc::clone(&logger), &scorer, &random_seed_bytes ).unwrap(); let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::>(); @@ -4836,7 +4985,7 @@ mod tests { let scorer = BadChannelScorer { short_channel_id: 6 }; let route = get_route( &our_id, &payment_params, &network_graph, None, 100, 42, - Arc::clone(&logger), &scorer + Arc::clone(&logger), &scorer, &random_seed_bytes ).unwrap(); let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::>(); @@ -4848,7 +4997,7 @@ mod tests { let scorer = BadNodeScorer { node_id: NodeId::from_pubkey(&nodes[2]) }; match get_route( &our_id, &payment_params, &network_graph, None, 100, 42, - Arc::clone(&logger), &scorer + Arc::clone(&logger), &scorer, &random_seed_bytes ) { Err(LightningError { err, .. } ) => { assert_eq!(err, "Failed to find a path to the given destination"); @@ -4930,8 +5079,9 @@ mod tests { #[test] fn limits_total_cltv_delta() { - let (secp_ctx, network_graph, _, _, logger) = build_graph(); + let (secp_ctx, network, _, _, logger) = build_graph(); let (_, our_id, _, nodes) = get_nodes(&secp_ctx); + let network_graph = network.read_only(); let scorer = test_utils::TestScorer::with_penalty(0); @@ -4939,7 +5089,9 @@ mod tests { let feasible_max_total_cltv_delta = 1008; let feasible_payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)) .with_max_total_cltv_expiry_delta(feasible_max_total_cltv_delta); - let route = get_route(&our_id, &feasible_payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer).unwrap(); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); + let route = get_route(&our_id, &feasible_payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); let path = route.paths[0].iter().map(|hop| hop.short_channel_id).collect::>(); assert_ne!(path.len(), 0); @@ -4947,7 +5099,7 @@ mod tests { let fail_max_total_cltv_delta = 23; let fail_payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)) .with_max_total_cltv_expiry_delta(fail_max_total_cltv_delta); - match get_route(&our_id, &fail_payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer) + match get_route(&our_id, &fail_payment_params, &network_graph, None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes) { Err(LightningError { err, .. } ) => { assert_eq!(err, "Failed to find a path to the given destination"); @@ -4956,6 +5108,106 @@ mod tests { } } + #[test] + fn adds_and_limits_cltv_offset() { + let (secp_ctx, network_graph, _, _, logger) = build_graph(); + let (_, our_id, _, nodes) = get_nodes(&secp_ctx); + + let scorer = test_utils::TestScorer::with_penalty(0); + + let payment_params = PaymentParameters::from_node_id(nodes[6]).with_route_hints(last_hops(&nodes)); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); + let route = get_route(&our_id, &payment_params, &network_graph.read_only(), None, 100, 42, Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); + assert_eq!(route.paths.len(), 1); + + let cltv_expiry_deltas_before = route.paths[0].iter().map(|h| h.cltv_expiry_delta).collect::>(); + + // Check whether the offset added to the last hop by default is in [1 .. DEFAULT_MAX_TOTAL_CLTV_EXPIRY_DELTA] + let mut route_default = route.clone(); + add_random_cltv_offset(&mut route_default, &payment_params, &network_graph.read_only(), &random_seed_bytes); + let cltv_expiry_deltas_default = route_default.paths[0].iter().map(|h| h.cltv_expiry_delta).collect::>(); + assert_eq!(cltv_expiry_deltas_before.split_last().unwrap().1, cltv_expiry_deltas_default.split_last().unwrap().1); + assert!(cltv_expiry_deltas_default.last() > cltv_expiry_deltas_before.last()); + assert!(cltv_expiry_deltas_default.last().unwrap() <= &DEFAULT_MAX_TOTAL_CLTV_EXPIRY_DELTA); + + // Check that no offset is added when we restrict the max_total_cltv_expiry_delta + let mut route_limited = route.clone(); + let limited_max_total_cltv_expiry_delta = cltv_expiry_deltas_before.iter().sum(); + let limited_payment_params = payment_params.with_max_total_cltv_expiry_delta(limited_max_total_cltv_expiry_delta); + add_random_cltv_offset(&mut route_limited, &limited_payment_params, &network_graph.read_only(), &random_seed_bytes); + let cltv_expiry_deltas_limited = route_limited.paths[0].iter().map(|h| h.cltv_expiry_delta).collect::>(); + assert_eq!(cltv_expiry_deltas_before, cltv_expiry_deltas_limited); + } + + #[test] + fn adds_plausible_cltv_offset() { + let (secp_ctx, network, _, _, logger) = build_graph(); + let (_, our_id, _, nodes) = get_nodes(&secp_ctx); + let network_graph = network.read_only(); + let network_nodes = network_graph.nodes(); + let network_channels = network_graph.channels(); + let scorer = test_utils::TestScorer::with_penalty(0); + let payment_params = PaymentParameters::from_node_id(nodes[3]); + let keys_manager = test_utils::TestKeysInterface::new(&[4u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); + + let mut route = get_route(&our_id, &payment_params, &network_graph, None, 100, 0, + Arc::clone(&logger), &scorer, &random_seed_bytes).unwrap(); + add_random_cltv_offset(&mut route, &payment_params, &network_graph, &random_seed_bytes); + + let mut path_plausibility = vec![]; + + for p in route.paths { + // 1. Select random observation point + let mut prng = ChaCha20::new(&random_seed_bytes, &[0u8; 12]); + let mut random_bytes = [0u8; ::core::mem::size_of::()]; + + prng.process_in_place(&mut random_bytes); + let random_path_index = usize::from_be_bytes(random_bytes).wrapping_rem(p.len()); + let observation_point = NodeId::from_pubkey(&p.get(random_path_index).unwrap().pubkey); + + // 2. Calculate what CLTV expiry delta we would observe there + let observed_cltv_expiry_delta: u32 = p[random_path_index..].iter().map(|h| h.cltv_expiry_delta).sum(); + + // 3. Starting from the observation point, find candidate paths + let mut candidates: VecDeque<(NodeId, Vec)> = VecDeque::new(); + candidates.push_back((observation_point, vec![])); + + let mut found_plausible_candidate = false; + + 'candidate_loop: while let Some((cur_node_id, cur_path_cltv_deltas)) = candidates.pop_front() { + if let Some(remaining) = observed_cltv_expiry_delta.checked_sub(cur_path_cltv_deltas.iter().sum::()) { + if remaining == 0 || remaining.wrapping_rem(40) == 0 || remaining.wrapping_rem(144) == 0 { + found_plausible_candidate = true; + break 'candidate_loop; + } + } + + if let Some(cur_node) = network_nodes.get(&cur_node_id) { + for channel_id in &cur_node.channels { + if let Some(channel_info) = network_channels.get(&channel_id) { + if let Some((dir_info, next_id)) = channel_info.as_directed_from(&cur_node_id) { + if let Some(channel_update_info) = dir_info.direction() { + let next_cltv_expiry_delta = channel_update_info.cltv_expiry_delta as u32; + if cur_path_cltv_deltas.iter().sum::() + .saturating_add(next_cltv_expiry_delta) <= observed_cltv_expiry_delta { + let mut new_path_cltv_deltas = cur_path_cltv_deltas.clone(); + new_path_cltv_deltas.push(next_cltv_expiry_delta); + candidates.push_back((*next_id, new_path_cltv_deltas)); + } + } + } + } + } + } + } + + path_plausibility.push(found_plausible_candidate); + } + assert!(path_plausibility.iter().all(|x| *x)); + } + #[cfg(not(feature = "no-std"))] pub(super) fn random_init_seed() -> u64 { // Because the default HashMap in std pulls OS randomness, we can use it as a (bad) RNG. @@ -4980,6 +5232,8 @@ mod tests { }, }; let graph = NetworkGraph::read(&mut d).unwrap(); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // First, get 100 (source, destination) pairs for which route-getting actually succeeds... let mut seed = random_init_seed() as usize; @@ -4994,7 +5248,7 @@ mod tests { let amt = seed as u64 % 200_000_000; let params = ProbabilisticScoringParameters::default(); let scorer = ProbabilisticScorer::new(params, &graph); - if get_route(src, &payment_params, &graph, None, amt, 42, &test_utils::TestLogger::new(), &scorer).is_ok() { + if get_route(src, &payment_params, &graph.read_only(), None, amt, 42, &test_utils::TestLogger::new(), &scorer, &random_seed_bytes).is_ok() { continue 'load_endpoints; } } @@ -5014,6 +5268,8 @@ mod tests { }, }; let graph = NetworkGraph::read(&mut d).unwrap(); + let keys_manager = test_utils::TestKeysInterface::new(&[0u8; 32], Network::Testnet); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // First, get 100 (source, destination) pairs for which route-getting actually succeeds... let mut seed = random_init_seed() as usize; @@ -5028,7 +5284,7 @@ mod tests { let amt = seed as u64 % 200_000_000; let params = ProbabilisticScoringParameters::default(); let scorer = ProbabilisticScorer::new(params, &graph); - if get_route(src, &payment_params, &graph, None, amt, 42, &test_utils::TestLogger::new(), &scorer).is_ok() { + if get_route(src, &payment_params, &graph.read_only(), None, amt, 42, &test_utils::TestLogger::new(), &scorer, &random_seed_bytes).is_ok() { continue 'load_endpoints; } } @@ -5069,6 +5325,7 @@ mod benches { use bitcoin::hashes::Hash; use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey}; use chain::transaction::OutPoint; + use chain::keysinterface::{KeysManager,KeysInterface}; use ln::channelmanager::{ChannelCounterparty, ChannelDetails}; use ln::features::{InitFeatures, InvoiceFeatures}; use routing::scoring::{FixedPenaltyScorer, ProbabilisticScorer, ProbabilisticScoringParameters, Scorer}; @@ -5169,6 +5426,8 @@ mod benches { ) { let nodes = graph.read_only().nodes().clone(); let payer = payer_pubkey(); + let keys_manager = KeysManager::new(&[0u8; 32], 42, 42); + let random_seed_bytes = keys_manager.get_secure_random_bytes(); // First, get 100 (source, destination) pairs for which route-getting actually succeeds... let mut routes = Vec::new(); @@ -5183,7 +5442,7 @@ mod benches { let params = PaymentParameters::from_node_id(dst).with_features(features.clone()); let first_hop = first_hop(src); let amt = seed as u64 % 1_000_000; - if let Ok(route) = get_route(&payer, ¶ms, &graph, Some(&[&first_hop]), amt, 42, &DummyLogger{}, &scorer) { + if let Ok(route) = get_route(&payer, ¶ms, &graph.read_only(), Some(&[&first_hop]), amt, 42, &DummyLogger{}, &scorer, &random_seed_bytes) { routes.push(route); route_endpoints.push((first_hop, params, amt)); continue 'load_endpoints; @@ -5210,7 +5469,7 @@ mod benches { let mut idx = 0; bench.iter(|| { let (first_hop, params, amt) = &route_endpoints[idx % route_endpoints.len()]; - assert!(get_route(&payer, params, &graph, Some(&[first_hop]), *amt, 42, &DummyLogger{}, &scorer).is_ok()); + assert!(get_route(&payer, params, &graph.read_only(), Some(&[first_hop]), *amt, 42, &DummyLogger{}, &scorer, &random_seed_bytes).is_ok()); idx += 1; }); } diff --git a/lightning/src/routing/scoring.rs b/lightning/src/routing/scoring.rs index 3ec44edef..c39abd1d0 100644 --- a/lightning/src/routing/scoring.rs +++ b/lightning/src/routing/scoring.rs @@ -20,6 +20,7 @@ //! # use lightning::routing::network_graph::NetworkGraph; //! # use lightning::routing::router::{RouteParameters, find_route}; //! # use lightning::routing::scoring::{ProbabilisticScorer, ProbabilisticScoringParameters, Scorer, ScoringParameters}; +//! # use lightning::chain::keysinterface::{KeysManager, KeysInterface}; //! # use lightning::util::logger::{Logger, Record}; //! # use secp256k1::key::PublicKey; //! # @@ -40,8 +41,9 @@ //! ..ProbabilisticScoringParameters::default() //! }; //! let scorer = ProbabilisticScorer::new(params, &network_graph); +//! # let random_seed_bytes = [42u8; 32]; //! -//! let route = find_route(&payer, &route_params, &network_graph, None, &logger, &scorer); +//! let route = find_route(&payer, &route_params, &network_graph, None, &logger, &scorer, &random_seed_bytes); //! # } //! ``` //!