Fix outbound_payment for new Path::blinded_tail

diff --git a/lightning/src/ln/outbound_payment.rs b/lightning/src/ln/outbound_payment.rs
index 636bc13a90b7adbe64facaadb253b7a4cfdf1c7e..5270ed35d8835d6f240e8ae0fcd90b12e0851685 100644 (file)
--- a/lightning/src/ln/outbound_payment.rs
+++ b/lightning/src/ln/outbound_payment.rs
@@ -719,7 +719,7 @@ impl OutboundPayments {
                };
                for path in route.paths.iter() {
                        if path.hops.len() == 0 {
-                               log_error!(logger, "length-0 path in route");
+                               log_error!(logger, "Unusable path in route (path.hops.len() must be at least 1");
                                self.abandon_payment(payment_id, PaymentFailureReason::UnexpectedError, pending_events);
                                return
                        }
@@ -895,7 +895,7 @@ impl OutboundPayments {
 
                let payment_hash = probing_cookie_from_id(&payment_id, probing_cookie_secret);
 
-               if path.hops.len() < 2 {
+               if path.hops.len() < 2 && path.blinded_tail.is_none() {
                        return Err(PaymentSendFailure::ParameterError(APIError::APIMisuseError {
                                err: "No need probing a path with less than two hops".to_string()
                        }))
@@ -1004,8 +1004,10 @@ impl OutboundPayments {
                                path_errs.push(Err(APIError::InvalidRoute{err: "Sending to blinded paths isn't supported yet".to_owned()}));
                                continue 'path_check;
                        }
+                       let dest_hop_idx = if path.blinded_tail.is_some() && path.blinded_tail.as_ref().unwrap().hops.len() > 1 {
+                               usize::max_value() } else { path.hops.len() - 1 };
                        for (idx, hop) in path.hops.iter().enumerate() {
-                               if idx != path.hops.len() - 1 && hop.pubkey == our_node_id {
+                               if idx != dest_hop_idx && hop.pubkey == our_node_id {
                                        path_errs.push(Err(APIError::InvalidRoute{err: "Path went through us but wasn't a simple rebalance loop to us".to_owned()}));
                                        continue 'path_check;
                                }