ChannelManager initialization docs with example
[rust-lightning] / lightning / src / ln / onion_route_tests.rs
index e5faedfe7fc39c958cc52f1c40fbcbc09bcebf27..80c588e2562e993bdb0cd78cf84bff236aeca593 100644 (file)
@@ -19,27 +19,28 @@ use crate::ln::channel::EXPIRE_PREV_CONFIG_TICKS;
 use crate::ln::channelmanager::{HTLCForwardInfo, FailureCode, CLTV_FAR_FAR_AWAY, DISABLE_GOSSIP_TICKS, MIN_CLTV_EXPIRY_DELTA, PendingAddHTLCInfo, PendingHTLCInfo, PendingHTLCRouting, PaymentId, RecipientOnionFields};
 use crate::ln::onion_utils;
 use crate::routing::gossip::{NetworkUpdate, RoutingFees};
-use crate::routing::router::{get_route, PaymentParameters, Route, RouteHint, RouteHintHop};
-use crate::ln::features::{InitFeatures, InvoiceFeatures};
+use crate::routing::router::{get_route, PaymentParameters, Route, RouteParameters, RouteHint, RouteHintHop};
+use crate::ln::features::{InitFeatures, Bolt11InvoiceFeatures};
 use crate::ln::msgs;
-use crate::ln::msgs::{ChannelMessageHandler, ChannelUpdate};
+use crate::ln::msgs::{ChannelMessageHandler, ChannelUpdate, OutboundTrampolinePayload};
 use crate::ln::wire::Encode;
-use crate::util::ser::{Writeable, Writer};
+use crate::util::ser::{Writeable, Writer, BigSize};
 use crate::util::test_utils;
 use crate::util::config::{UserConfig, ChannelConfig, MaxDustHTLCExposure};
 use crate::util::errors::APIError;
 
-use bitcoin::hash_types::BlockHash;
-
-use bitcoin::hashes::Hash;
+use bitcoin::blockdata::constants::ChainHash;
+use bitcoin::hashes::{Hash, HashEngine};
+use bitcoin::hashes::hmac::{Hmac, HmacEngine};
 use bitcoin::hashes::sha256::Hash as Sha256;
 
 use bitcoin::secp256k1;
-use bitcoin::secp256k1::{Secp256k1, SecretKey};
+use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
 
 use crate::io;
 use crate::prelude::*;
 use core::default::Default;
+use bitcoin::hashes::hex::FromHex;
 
 use crate::ln::functional_test_utils::*;
 
@@ -57,7 +58,12 @@ fn run_onion_failure_test<F1,F2>(_name: &str, test_case: u8, nodes: &Vec<Node>,
 // 3: final node fails backward (but tamper onion payloads from node0)
 // 100: trigger error in the intermediate node and tamper returning fail_htlc
 // 200: trigger error in the final node and tamper returning fail_htlc
-fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(_name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash, payment_secret: &PaymentSecret, mut callback_msg: F1, mut callback_fail: F2, mut callback_node: F3, expected_retryable: bool, expected_error_code: Option<u16>, expected_channel_update: Option<NetworkUpdate>, expected_short_channel_id: Option<u64>)
+fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(
+       _name: &str, test_case: u8, nodes: &Vec<Node>, route: &Route, payment_hash: &PaymentHash,
+       payment_secret: &PaymentSecret, mut callback_msg: F1, mut callback_fail: F2,
+       mut callback_node: F3, expected_retryable: bool, expected_error_code: Option<u16>,
+       expected_channel_update: Option<NetworkUpdate>, expected_short_channel_id: Option<u64>
+)
        where F1: for <'a> FnMut(&'a mut msgs::UpdateAddHTLC),
                                F2: for <'a> FnMut(&'a mut msgs::UpdateFailHTLC),
                                F3: FnMut(),
@@ -228,12 +234,13 @@ fn run_onion_failure_test_with_fail_intercept<F1,F2,F3>(_name: &str, test_case:
 
 impl msgs::ChannelUpdate {
        fn dummy(short_channel_id: u64) -> msgs::ChannelUpdate {
+               use bitcoin::hash_types::BlockHash;
                use bitcoin::secp256k1::ffi::Signature as FFISignature;
                use bitcoin::secp256k1::ecdsa::Signature;
                msgs::ChannelUpdate {
                        signature: Signature::from(unsafe { FFISignature::new() }),
                        contents: msgs::UnsignedChannelUpdate {
-                               chain_hash: BlockHash::hash(&vec![0u8][..]),
+                               chain_hash: ChainHash::from(BlockHash::hash(&vec![0u8][..]).as_ref()),
                                short_channel_id,
                                timestamp: 0,
                                flags: 0,
@@ -252,7 +259,7 @@ struct BogusOnionHopData {
        data: Vec<u8>
 }
 impl BogusOnionHopData {
-       fn new(orig: msgs::OnionHopData) -> Self {
+       fn new(orig: msgs::OutboundOnionPayload) -> Self {
                Self { data: orig.encode() }
        }
 }
@@ -510,7 +517,7 @@ fn test_onion_failure() {
        let short_channel_id = channels[1].0.contents.short_channel_id;
        let amt_to_forward = nodes[1].node.per_peer_state.read().unwrap().get(&nodes[2].node.get_our_node_id())
                .unwrap().lock().unwrap().channel_by_id.get(&channels[1].2).unwrap()
-               .context.get_counterparty_htlc_minimum_msat() - 1;
+               .context().get_counterparty_htlc_minimum_msat() - 1;
        let mut bogus_route = route.clone();
        let route_len = bogus_route.paths[0].hops.len();
        bogus_route.paths[0].hops[route_len-1].fee_msat = amt_to_forward;
@@ -597,7 +604,7 @@ fn test_onion_failure() {
                nodes[1].node.get_and_clear_pending_msg_events();
                nodes[2].node.get_and_clear_pending_msg_events();
        }, true, Some(UPDATE|20), Some(NetworkUpdate::ChannelUpdateMessage{msg: ChannelUpdate::dummy(short_channel_id)}), Some(short_channel_id));
-       reconnect_nodes(&nodes[1], &nodes[2], (false, false), (0, 0), (0, 0), (0, 0), (0, 0), (0, 0), (false, false));
+       reconnect_nodes(ReconnectArgs::new(&nodes[1], &nodes[2]));
 
        run_onion_failure_test("expiry_too_far", 0, &nodes, &route, &payment_hash, &payment_secret, |msg| {
                let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
@@ -620,6 +627,75 @@ fn test_onion_failure() {
        }, ||{
                nodes[2].node.fail_htlc_backwards(&payment_hash);
        }, true, Some(23), None, None);
+
+       run_onion_failure_test_with_fail_intercept("bogus err packet with valid hmac", 200, &nodes,
+               &route, &payment_hash, &payment_secret, |_msg| {}, |msg| {
+                       let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
+                       let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
+                       let mut decoded_err_packet = msgs::DecodedOnionErrorPacket {
+                               failuremsg: vec![0],
+                               pad: vec![0; 255],
+                               hmac: [0; 32],
+                       };
+                       let um = onion_utils::gen_um_from_shared_secret(&onion_keys[1].shared_secret.as_ref());
+                       let mut hmac = HmacEngine::<Sha256>::new(&um);
+                       hmac.input(&decoded_err_packet.encode()[32..]);
+                       decoded_err_packet.hmac = Hmac::from_engine(hmac).to_byte_array();
+                       msg.reason = onion_utils::encrypt_failure_packet(
+                               &onion_keys[1].shared_secret.as_ref(), &decoded_err_packet.encode()[..])
+               }, || nodes[2].node.fail_htlc_backwards(&payment_hash), false, None,
+               Some(NetworkUpdate::NodeFailure { node_id: route.paths[0].hops[1].pubkey, is_permanent: true }),
+               Some(channels[1].0.contents.short_channel_id));
+       run_onion_failure_test_with_fail_intercept("0-length channel update in intermediate node UPDATE onion failure",
+               100, &nodes, &route, &payment_hash, &payment_secret, |msg| {
+                       msg.amount_msat -= 1;
+               }, |msg| {
+                       let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
+                       let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
+                       let mut decoded_err_packet = msgs::DecodedOnionErrorPacket {
+                               failuremsg: vec![
+                                       0x10, 0x7, // UPDATE|7
+                                       0x0, 0x0 // 0-len channel update
+                               ],
+                               pad: vec![0; 255 - 4 /* 4-byte error message */],
+                               hmac: [0; 32],
+                       };
+                       let um = onion_utils::gen_um_from_shared_secret(&onion_keys[0].shared_secret.as_ref());
+                       let mut hmac = HmacEngine::<Sha256>::new(&um);
+                       hmac.input(&decoded_err_packet.encode()[32..]);
+                       decoded_err_packet.hmac = Hmac::from_engine(hmac).to_byte_array();
+                       msg.reason = onion_utils::encrypt_failure_packet(
+                               &onion_keys[0].shared_secret.as_ref(), &decoded_err_packet.encode()[..])
+               }, || {}, true, Some(0x1000|7),
+               Some(NetworkUpdate::ChannelFailure {
+                       short_channel_id: channels[1].0.contents.short_channel_id,
+                       is_permanent: false,
+               }),
+               Some(channels[1].0.contents.short_channel_id));
+       run_onion_failure_test_with_fail_intercept("0-length channel update in final node UPDATE onion failure",
+               200, &nodes, &route, &payment_hash, &payment_secret, |_msg| {}, |msg| {
+                       let session_priv = SecretKey::from_slice(&[3; 32]).unwrap();
+                       let onion_keys = onion_utils::construct_onion_keys(&Secp256k1::new(), &route.paths[0], &session_priv).unwrap();
+                       let mut decoded_err_packet = msgs::DecodedOnionErrorPacket {
+                               failuremsg: vec![
+                                       0x10, 0x7, // UPDATE|7
+                                       0x0, 0x0 // 0-len channel update
+                               ],
+                               pad: vec![0; 255 - 4 /* 4-byte error message */],
+                               hmac: [0; 32],
+                       };
+                       let um = onion_utils::gen_um_from_shared_secret(&onion_keys[1].shared_secret.as_ref());
+                       let mut hmac = HmacEngine::<Sha256>::new(&um);
+                       hmac.input(&decoded_err_packet.encode()[32..]);
+                       decoded_err_packet.hmac = Hmac::from_engine(hmac).to_byte_array();
+                       msg.reason = onion_utils::encrypt_failure_packet(
+                               &onion_keys[1].shared_secret.as_ref(), &decoded_err_packet.encode()[..])
+               }, || nodes[2].node.fail_htlc_backwards(&payment_hash), true, Some(0x1000|7),
+               Some(NetworkUpdate::ChannelFailure {
+                       short_channel_id: channels[1].0.contents.short_channel_id,
+                       is_permanent: false,
+               }),
+               Some(channels[1].0.contents.short_channel_id));
 }
 
 #[test]
@@ -673,11 +749,11 @@ fn do_test_onion_failure_stale_channel_update(announced_channel: bool) {
        config.accept_forwards_to_priv_channels = !announced_channel;
        config.channel_config.max_dust_htlc_exposure = MaxDustHTLCExposure::FeeRateMultiplier(5_000_000 / 253);
        let chanmon_cfgs = create_chanmon_cfgs(3);
+       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let persister;
        let chain_monitor;
-       let channel_manager_1_deserialized;
-       let node_cfgs = create_node_cfgs(3, &chanmon_cfgs);
        let node_chanmgrs = create_node_chanmgrs(3, &node_cfgs, &[None, Some(config), None]);
+       let channel_manager_1_deserialized;
        let mut nodes = create_network(3, &node_cfgs, &node_chanmgrs);
 
        let other_channel = create_chan_between_nodes(
@@ -715,7 +791,7 @@ fn do_test_onion_failure_stale_channel_update(announced_channel: bool) {
                        htlc_minimum_msat: None,
                }])];
                let payment_params = PaymentParameters::from_node_id(*channel_to_update_counterparty, TEST_FINAL_CLTV)
-                       .with_bolt11_features(nodes[2].node.invoice_features()).unwrap()
+                       .with_bolt11_features(nodes[2].node.bolt11_invoice_features()).unwrap()
                        .with_route_hints(hop_hints).unwrap();
                get_route_and_payment_hash!(nodes[0], nodes[2], payment_params, PAYMENT_AMT)
        };
@@ -862,7 +938,7 @@ fn test_always_create_tlv_format_onion_payloads() {
        create_announced_chan_between_nodes(&nodes, 1, 2);
 
        let payment_params = PaymentParameters::from_node_id(nodes[2].node.get_our_node_id(), TEST_FINAL_CLTV)
-               .with_bolt11_features(InvoiceFeatures::empty()).unwrap();
+               .with_bolt11_features(Bolt11InvoiceFeatures::empty()).unwrap();
        let (route, _payment_hash, _payment_preimage, _payment_secret) = get_route_and_payment_hash!(nodes[0], nodes[2], payment_params, 40000);
 
        let hops = &route.paths[0].hops;
@@ -875,15 +951,15 @@ fn test_always_create_tlv_format_onion_payloads() {
        let (onion_payloads, _htlc_msat, _htlc_cltv) = onion_utils::build_onion_payloads(
                &route.paths[0], 40000, RecipientOnionFields::spontaneous_empty(), cur_height, &None).unwrap();
 
-       match onion_payloads[0].format {
-               msgs::OnionHopDataFormat::NonFinalNode {..} => {},
+       match onion_payloads[0] {
+               msgs::OutboundOnionPayload::Forward {..} => {},
                _ => { panic!(
                        "Should have generated a `msgs::OnionHopDataFormat::NonFinalNode` payload for `hops[0]`,
                        despite that the features signals no support for variable length onions"
                )}
        }
-       match onion_payloads[1].format {
-               msgs::OnionHopDataFormat::FinalNode {..} => {},
+       match onion_payloads[1] {
+               msgs::OutboundOnionPayload::Receive {..} => {},
                _ => {panic!(
                        "Should have generated a `msgs::OnionHopDataFormat::FinalNode` payload for `hops[1]`,
                        despite that the features signals no support for variable length onions"
@@ -891,6 +967,25 @@ fn test_always_create_tlv_format_onion_payloads() {
        }
 }
 
+#[test]
+fn test_trampoline_onion_payload_serialization() {
+       // As per https://github.com/lightning/bolts/blob/c01d2e6267d4a8d1095f0f1188970055a9a22d29/bolt04/trampoline-payment-onion-test.json#L3
+       let trampoline_payload = OutboundTrampolinePayload::Forward {
+               amt_to_forward: 100000000,
+               outgoing_cltv_value: 800000,
+               outgoing_node_id: PublicKey::from_slice(&<Vec<u8>>::from_hex("02edabbd16b41c8371b92ef2f04c1185b4f03b6dcd52ba9b78d9d7c89c8f221145").unwrap()).unwrap(),
+       };
+
+       let slice_to_hex = |slice: &[u8]| {
+               slice.iter()
+                       .map(|b| format!("{:02x}", b).to_string())
+                       .collect::<String>()
+       };
+
+       let carol_payload_hex = slice_to_hex(&trampoline_payload.encode());
+       assert_eq!(carol_payload_hex, "2e020405f5e10004030c35000e2102edabbd16b41c8371b92ef2f04c1185b4f03b6dcd52ba9b78d9d7c89c8f221145");
+}
+
 fn do_test_fail_htlc_backwards_with_reason(failure_code: FailureCode) {
 
        let chanmon_cfgs = create_chanmon_cfgs(2);
@@ -942,10 +1037,16 @@ fn do_test_fail_htlc_backwards_with_reason(failure_code: FailureCode) {
                        let mut htlc_msat_height_data = (payment_amount as u64).to_be_bytes().to_vec();
                        htlc_msat_height_data.extend_from_slice(&CHAN_CONFIRM_DEPTH.to_be_bytes());
                        htlc_msat_height_data
+               },
+               FailureCode::InvalidOnionPayload(data) => {
+                       match data {
+                               Some((typ, offset)) => [BigSize(typ).encode(), offset.encode()].concat(),
+                               None => Vec::new(),
+                       }
                }
        };
 
-       let failure_code = failure_code as u16;
+       let failure_code = failure_code.into();
        let permanent_flag = 0x4000;
        let permanent_fail = (failure_code & permanent_flag) != 0;
        expect_payment_failed!(nodes[0], payment_hash, permanent_fail, failure_code, failure_data);
@@ -957,6 +1058,8 @@ fn test_fail_htlc_backwards_with_reason() {
        do_test_fail_htlc_backwards_with_reason(FailureCode::TemporaryNodeFailure);
        do_test_fail_htlc_backwards_with_reason(FailureCode::RequiredNodeFeatureMissing);
        do_test_fail_htlc_backwards_with_reason(FailureCode::IncorrectOrUnknownPaymentDetails);
+       do_test_fail_htlc_backwards_with_reason(FailureCode::InvalidOnionPayload(Some((1 << 16, 42))));
+       do_test_fail_htlc_backwards_with_reason(FailureCode::InvalidOnionPayload(None));
 }
 
 macro_rules! get_phantom_route {
@@ -964,7 +1067,7 @@ macro_rules! get_phantom_route {
                let phantom_pubkey = $nodes[1].keys_manager.get_node_id(Recipient::PhantomNode).unwrap();
                let phantom_route_hint = $nodes[1].node.get_phantom_route_hints();
                let payment_params = PaymentParameters::from_node_id(phantom_pubkey, TEST_FINAL_CLTV)
-                       .with_bolt11_features($nodes[1].node.invoice_features()).unwrap()
+                       .with_bolt11_features($nodes[1].node.bolt11_invoice_features()).unwrap()
                        .with_route_hints(vec![RouteHint(vec![
                                        RouteHintHop {
                                                src_node_id: $nodes[0].node.get_our_node_id(),
@@ -991,10 +1094,11 @@ macro_rules! get_phantom_route {
                ])]).unwrap();
                let scorer = test_utils::TestScorer::new();
                let network_graph = $nodes[0].network_graph.read_only();
+               let route_params = RouteParameters::from_payment_params_and_value(payment_params, $amt);
                (get_route(
-                       &$nodes[0].node.get_our_node_id(), &payment_params, &network_graph,
+                       &$nodes[0].node.get_our_node_id(), &route_params, &network_graph,
                        Some(&$nodes[0].node.list_usable_channels().iter().collect::<Vec<_>>()),
-                       $amt, $nodes[0].logger, &scorer, &(), &[0u8; 32]
+                       $nodes[0].logger, &scorer, &Default::default(), &[0u8; 32]
                ).unwrap(), phantom_route_hint.phantom_scid)
        }
 }}
@@ -1035,7 +1139,7 @@ fn test_phantom_onion_hmac_failure() {
                                }, ..
                        }) => {
                                onion_packet.hmac[onion_packet.hmac.len() - 1] ^= 1;
-                               Sha256::hash(&onion_packet.hop_data).into_inner().to_vec()
+                               Sha256::hash(&onion_packet.hop_data).to_byte_array().to_vec()
                        },
                        _ => panic!("Unexpected forward"),
                }
@@ -1233,7 +1337,7 @@ fn test_phantom_failure_too_low_cltv() {
        // Ensure the payment fails with the expected error.
        let mut error_data = recv_value_msat.to_be_bytes().to_vec();
        error_data.extend_from_slice(
-               &nodes[0].node.best_block.read().unwrap().height().to_be_bytes(),
+               &nodes[0].node.best_block.read().unwrap().height.to_be_bytes(),
        );
        let mut fail_conditions = PaymentFailedConditions::new()
                .blamed_scid(phantom_scid)
@@ -1363,7 +1467,7 @@ fn test_phantom_failure_too_low_recv_amt() {
 
        // Ensure the payment fails with the expected error.
        let mut error_data = bad_recv_amt_msat.to_be_bytes().to_vec();
-       error_data.extend_from_slice(&nodes[1].node.best_block.read().unwrap().height().to_be_bytes());
+       error_data.extend_from_slice(&nodes[1].node.best_block.read().unwrap().height.to_be_bytes());
        let mut fail_conditions = PaymentFailedConditions::new()
                .blamed_scid(phantom_scid)
                .expected_htlc_error_data(0x4000 | 15, &error_data);
@@ -1470,7 +1574,7 @@ fn test_phantom_failure_reject_payment() {
 
        // Ensure the payment fails with the expected error.
        let mut error_data = recv_amt_msat.to_be_bytes().to_vec();
-       error_data.extend_from_slice(&nodes[1].node.best_block.read().unwrap().height().to_be_bytes());
+       error_data.extend_from_slice(&nodes[1].node.best_block.read().unwrap().height.to_be_bytes());
        let mut fail_conditions = PaymentFailedConditions::new()
                .blamed_scid(phantom_scid)
                .expected_htlc_error_data(0x4000 | 15, &error_data);