//! channel matches a UTXO on-chain, requiring at least some marginal on-chain transacting in
//! order to announce a channel. This module handles that checking.
-use bitcoin::{BlockHash, TxOut};
+use bitcoin::TxOut;
+use bitcoin::blockdata::constants::ChainHash;
use bitcoin::hashes::hex::ToHex;
+use crate::events::MessageSendEvent;
use crate::ln::chan_utils::make_funding_redeemscript_from_slices;
use crate::ln::msgs::{self, LightningError, ErrorAction};
use crate::routing::gossip::{NetworkGraph, NodeId, P2PGossipSync};
-use crate::util::events::MessageSendEvent;
use crate::util::logger::{Level, Logger};
use crate::util::ser::Writeable;
use crate::prelude::*;
use alloc::sync::{Arc, Weak};
-use crate::sync::Mutex;
+use crate::sync::{Mutex, LockTestExt};
use core::ops::Deref;
/// An error when accessing the chain via [`UtxoLookup`].
/// The `UtxoLookup` trait defines behavior for accessing on-chain UTXOs.
pub trait UtxoLookup {
/// Returns the transaction output of a funding transaction encoded by [`short_channel_id`].
- /// Returns an error if `genesis_hash` is for a different chain or if such a transaction output
- /// is unknown.
+ /// Returns an error if `chain_hash` is for a different chain or if such a transaction output is
+ /// unknown.
///
/// [`short_channel_id`]: https://github.com/lightning/bolts/blob/master/07-routing-gossip.md#definition-of-short_channel_id
- fn get_utxo(&self, genesis_hash: &BlockHash, short_channel_id: u64) -> UtxoResult;
+ fn get_utxo(&self, chain_hash: &ChainHash, short_channel_id: u64) -> UtxoResult;
}
enum ChannelAnnouncement {
/// A trivial implementation of [`UtxoLookup`] which is used to call back into the network graph
/// once we have a concrete resolution of a request.
-struct UtxoResolver(Result<TxOut, UtxoLookupError>);
+pub(crate) struct UtxoResolver(Result<TxOut, UtxoLookupError>);
impl UtxoLookup for UtxoResolver {
- fn get_utxo(&self, _genesis_hash: &BlockHash, _short_channel_id: u64) -> UtxoResult {
+ fn get_utxo(&self, _chain_hash: &ChainHash, _short_channel_id: u64) -> UtxoResult {
UtxoResult::Sync(self.0.clone())
}
}
// lookup if we haven't gotten that far yet).
match Weak::upgrade(&e.get()) {
Some(pending_msgs) => {
- let pending_matches = match &pending_msgs.lock().unwrap().channel_announce {
+ // This may be called with the mutex held on a different UtxoMessages
+ // struct, however in that case we have a global lockorder of new messages
+ // -> old messages, which makes this safe.
+ let pending_matches = match &pending_msgs.unsafe_well_ordered_double_lock_self().channel_announce {
Some(ChannelAnnouncement::Full(pending_msg)) => Some(pending_msg) == full_msg,
Some(ChannelAnnouncement::Unsigned(pending_msg)) => pending_msg == msg,
None => {
Ok(TxOut { value: 1_000_000, script_pubkey: good_script }));
assert_eq!(chan_update_a.contents.timestamp, chan_update_b.contents.timestamp);
- assert!(network_graph.read_only().channels()
+ let graph_lock = network_graph.read_only();
+ assert!(graph_lock.channels()
.get(&valid_announcement.contents.short_channel_id).as_ref().unwrap()
.one_to_two.as_ref().unwrap().last_update !=
- network_graph.read_only().channels()
+ graph_lock.channels()
.get(&valid_announcement.contents.short_channel_id).as_ref().unwrap()
.two_to_one.as_ref().unwrap().last_update);
}