Stub out ChaCha20 non-HMAC encryption/decryption in fuzztarget
[rust-lightning] / src / ln / channelmanager.rs
index 730842c03fbf9aa32108d8c378b4703ce032615d..29d260ba6886c8826ff4510f8215a3c097e27d2e 100644 (file)
@@ -19,13 +19,13 @@ use ln::msgs;
 use ln::msgs::{HandleError,ChannelMessageHandler,MsgEncodable,MsgDecodable};
 use util::{byte_utils, events, internal_traits, rng};
 use util::sha2::Sha256;
+use util::chacha20poly1305rfc::ChaCha20;
 
 use crypto;
 use crypto::mac::{Mac,MacResult};
 use crypto::hmac::Hmac;
 use crypto::digest::Digest;
 use crypto::symmetriccipher::SynchronousStreamCipher;
-use crypto::chacha20::ChaCha20;
 
 use std::{ptr, mem};
 use std::collections::HashMap;
@@ -115,14 +115,19 @@ struct ChannelHolder {
        short_to_id: HashMap<u64, [u8; 32]>,
        next_forward: Instant,
        /// short channel id -> forward infos. Key of 0 means payments received
+       /// Note that while this is held in the same mutex as the channels themselves, no consistency
+       /// guarantees are made about there existing a channel with the short id here, nor the short
+       /// ids in the PendingForwardHTLCInfo!
        forward_htlcs: HashMap<u64, Vec<PendingForwardHTLCInfo>>,
+       /// Note that while this is held in the same mutex as the channels themselves, no consistency
+       /// guarantees are made about the channels given here actually existing anymore by the time you
+       /// go to read them!
        claimable_htlcs: HashMap<[u8; 32], PendingOutboundHTLC>,
 }
 struct MutChannelHolder<'a> {
        by_id: &'a mut HashMap<[u8; 32], Channel>,
        short_to_id: &'a mut HashMap<u64, [u8; 32]>,
        next_forward: &'a mut Instant,
-       /// short channel id -> forward infos. Key of 0 means payments received
        forward_htlcs: &'a mut HashMap<u64, Vec<PendingForwardHTLCInfo>>,
        claimable_htlcs: &'a mut HashMap<[u8; 32], PendingOutboundHTLC>,
 }
@@ -132,13 +137,15 @@ impl ChannelHolder {
                        by_id: &mut self.by_id,
                        short_to_id: &mut self.short_to_id,
                        next_forward: &mut self.next_forward,
-                       /// short channel id -> forward infos. Key of 0 means payments received
                        forward_htlcs: &mut self.forward_htlcs,
                        claimable_htlcs: &mut self.claimable_htlcs,
                }
        }
 }
 
+#[cfg(not(any(target_pointer_width = "32", target_pointer_width = "64")))]
+const ERR: () = "You need at least 32 bit pointers (well, usize, but we'll assume they're the same) for ChannelManager::latest_block_height";
+
 /// Manager which keeps track of a number of channels and sends messages to the appropriate
 /// channel, also tracking HTLC preimages and forwarding onion packets appropriately.
 /// Implements ChannelMessageHandler, handling the multi-channel parts and passing things through
@@ -152,7 +159,7 @@ pub struct ChannelManager {
 
        announce_channels_publicly: bool,
        fee_proportional_millionths: u32,
-       latest_block_height: AtomicUsize, //TODO: Compile-time assert this is at least 32-bits long
+       latest_block_height: AtomicUsize,
        secp_ctx: Secp256k1,
 
        channel_state: Mutex<ChannelHolder>,
@@ -360,6 +367,47 @@ impl ChannelManager {
                Ok(())
        }
 
+       #[inline]
+       fn finish_force_close_channel(&self, shutdown_res: (Vec<Transaction>, Vec<[u8; 32]>)) {
+               let (local_txn, failed_htlcs) = shutdown_res;
+               for payment_hash in failed_htlcs {
+                       // unknown_next_peer...I dunno who that is anymore....
+                       self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), &payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 10, data: Vec::new() });
+               }
+               for tx in local_txn {
+                       self.tx_broadcaster.broadcast_transaction(&tx);
+               }
+               //TODO: We need to have a way where outbound HTLC claims can result in us claiming the
+               //now-on-chain HTLC output for ourselves (and, thereafter, passing the HTLC backwards).
+               //TODO: We need to handle monitoring of pending offered HTLCs which just hit the chain and
+               //may be claimed, resulting in us claiming the inbound HTLCs (and back-failing after
+               //timeouts are hit and our claims confirm).
+       }
+
+       /// Force closes a channel, immediately broadcasting the latest local commitment transaction to
+       /// the chain and rejecting new HTLCs on the given channel.
+       pub fn force_close_channel(&self, channel_id: &[u8; 32]) {
+               let mut chan = {
+                       let mut channel_state_lock = self.channel_state.lock().unwrap();
+                       let channel_state = channel_state_lock.borrow_parts();
+                       if let Some(chan) = channel_state.by_id.remove(channel_id) {
+                               if let Some(short_id) = chan.get_short_channel_id() {
+                                       channel_state.short_to_id.remove(&short_id);
+                               }
+                               chan
+                       } else {
+                               return;
+                       }
+               };
+               self.finish_force_close_channel(chan.force_shutdown());
+               let mut events = self.pending_events.lock().unwrap();
+               if let Ok(update) = self.get_channel_update(&chan) {
+                       events.push(events::Event::BroadcastChannelUpdate {
+                               msg: update
+                       });
+               }
+       }
+
        #[inline]
        fn gen_rho_mu_from_shared_secret(shared_secret: &SharedSecret) -> ([u8; 32], [u8; 32]) {
                ({
@@ -884,6 +932,12 @@ impl ChannelManager {
                self.fail_htlc_backwards_internal(self.channel_state.lock().unwrap(), payment_hash, HTLCFailReason::Reason { failure_code: 0x4000 | 15, data: Vec::new() })
        }
 
+       /// Fails an HTLC backwards to the sender of it to us.
+       /// Note that while we take a channel_state lock as input, we do *not* assume consistency here.
+       /// There are several callsites that do stupid things like loop over a list of payment_hashes
+       /// to fail and take the channel_state lock for each iteration (as we take ownership and may
+       /// drop it). In other words, no assumptions are made that entries in claimable_htlcs point to
+       /// still-available channels.
        fn fail_htlc_backwards_internal(&self, mut channel_state: MutexGuard<ChannelHolder>, payment_hash: &[u8; 32], onion_error: HTLCFailReason) -> bool {
                let mut pending_htlc = {
                        match channel_state.claimable_htlcs.remove(payment_hash) {
@@ -904,7 +958,7 @@ impl ChannelManager {
                }
 
                match pending_htlc {
-                       PendingOutboundHTLC::CycledRoute { .. } => { panic!("WAT"); },
+                       PendingOutboundHTLC::CycledRoute { .. } => unreachable!(),
                        PendingOutboundHTLC::OutboundRoute { .. } => {
                                mem::drop(channel_state);
 
@@ -1000,7 +1054,7 @@ impl ChannelManager {
                }
 
                match pending_htlc {
-                       PendingOutboundHTLC::CycledRoute { .. } => { panic!("WAT"); },
+                       PendingOutboundHTLC::CycledRoute { .. } => unreachable!(),
                        PendingOutboundHTLC::OutboundRoute { .. } => {
                                if from_user {
                                        panic!("Called claim_funds with a preimage for an outgoing payment. There is nothing we can do with this, and something is seriously wrong if you knew this...");
@@ -1016,13 +1070,20 @@ impl ChannelManager {
                                let (node_id, fulfill_msgs) = {
                                        let chan_id = match channel_state.short_to_id.get(&source_short_channel_id) {
                                                Some(chan_id) => chan_id.clone(),
-                                               None => return false
+                                               None => {
+                                                       // TODO: There is probably a channel manager somewhere that needs to
+                                                       // learn the preimage as the channel already hit the chain and that's
+                                                       // why its missing.
+                                                       return false
+                                               }
                                        };
 
                                        let chan = channel_state.by_id.get_mut(&chan_id).unwrap();
                                        match chan.get_update_fulfill_htlc_and_commit(payment_preimage) {
                                                Ok(msg) => (chan.get_their_node_id(), msg),
                                                Err(_e) => {
+                                                       // TODO: There is probably a channel manager somewhere that needs to
+                                                       // learn the preimage as the channel may be about to hit the chain.
                                                        //TODO: Do something with e?
                                                        return false;
                                                },
@@ -1030,20 +1091,19 @@ impl ChannelManager {
                                };
 
                                mem::drop(channel_state);
-                               match fulfill_msgs {
-                                       Some((msg, commitment_msg, chan_monitor)) => {
-                                               if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
-                                                       unimplemented!();// but def dont push the event...
-                                               }
+                               if let Some(chan_monitor) = fulfill_msgs.1 {
+                                       if let Err(_e) = self.monitor.add_update_monitor(chan_monitor.get_funding_txo().unwrap(), chan_monitor) {
+                                               unimplemented!();// but def dont push the event...
+                                       }
+                               }
 
-                                               let mut pending_events = self.pending_events.lock().unwrap();
-                                               pending_events.push(events::Event::SendFulfillHTLC {
-                                                       node_id: node_id,
-                                                       msg,
-                                                       commitment_msg,
-                                               });
-                                       },
-                                       None => {},
+                               if let Some((msg, commitment_msg)) = fulfill_msgs.0 {
+                                       let mut pending_events = self.pending_events.lock().unwrap();
+                                       pending_events.push(events::Event::SendFulfillHTLC {
+                                               node_id: node_id,
+                                               msg,
+                                               commitment_msg,
+                                       });
                                }
                                true
                        },
@@ -1075,12 +1135,14 @@ impl events::EventsProvider for ChannelManager {
 impl ChainListener for ChannelManager {
        fn block_connected(&self, header: &BlockHeader, height: u32, txn_matched: &[&Transaction], indexes_of_txn_matched: &[u32]) {
                let mut new_events = Vec::new();
+               let mut failed_channels = Vec::new();
                {
-                       let mut channel_state = self.channel_state.lock().unwrap();
-                       let mut short_to_ids_to_insert = Vec::new();
-                       let mut short_to_ids_to_remove = Vec::new();
+                       let mut channel_lock = self.channel_state.lock().unwrap();
+                       let channel_state = channel_lock.borrow_parts();
+                       let short_to_id = channel_state.short_to_id;
                        channel_state.by_id.retain(|_, channel| {
-                               if let Some(funding_locked) = channel.block_connected(header, height, txn_matched, indexes_of_txn_matched) {
+                               let chan_res = channel.block_connected(header, height, txn_matched, indexes_of_txn_matched);
+                               if let Ok(Some(funding_locked)) = chan_res {
                                        let announcement_sigs = match self.get_announcement_sigs(channel) {
                                                Ok(res) => res,
                                                Err(_e) => {
@@ -1093,16 +1155,29 @@ impl ChainListener for ChannelManager {
                                                msg: funding_locked,
                                                announcement_sigs: announcement_sigs
                                        });
-                                       short_to_ids_to_insert.push((channel.get_short_channel_id().unwrap(), channel.channel_id()));
+                                       short_to_id.insert(channel.get_short_channel_id().unwrap(), channel.channel_id());
+                               } else if let Err(e) = chan_res {
+                                       if let Some(msgs::ErrorAction::DisconnectPeer { msg }) = e.action {
+                                               new_events.push(events::Event::DisconnectPeer {
+                                                       node_id: channel.get_their_node_id(),
+                                                       msg: msg
+                                               });
+                                       } else { unreachable!(); }
+                                       if channel.is_shutdown() {
+                                               return false;
+                                       }
                                }
                                if let Some(funding_txo) = channel.get_funding_txo() {
                                        for tx in txn_matched {
                                                for inp in tx.input.iter() {
                                                        if inp.prev_hash == funding_txo.txid && inp.prev_index == funding_txo.index as u32 {
                                                                if let Some(short_id) = channel.get_short_channel_id() {
-                                                                       short_to_ids_to_remove.push(short_id);
+                                                                       short_to_id.remove(&short_id);
                                                                }
-                                                               channel.force_shutdown();
+                                                               // It looks like our counterparty went on-chain. We go ahead and
+                                                               // broadcast our latest local state as well here, just in case its
+                                                               // some kind of SPV attack, though we expect these to be dropped.
+                                                               failed_channels.push(channel.force_shutdown());
                                                                if let Ok(update) = self.get_channel_update(&channel) {
                                                                        new_events.push(events::Event::BroadcastChannelUpdate {
                                                                                msg: update
@@ -1113,11 +1188,15 @@ impl ChainListener for ChannelManager {
                                                }
                                        }
                                }
-                               if channel.channel_monitor().would_broadcast_at_height(height) {
+                               if channel.is_funding_initiated() && channel.channel_monitor().would_broadcast_at_height(height) {
                                        if let Some(short_id) = channel.get_short_channel_id() {
-                                               short_to_ids_to_remove.push(short_id);
+                                               short_to_id.remove(&short_id);
                                        }
-                                       channel.force_shutdown();
+                                       failed_channels.push(channel.force_shutdown());
+                                       // If would_broadcast_at_height() is true, the channel_monitor will broadcast
+                                       // the latest local tx for us, so we should skip that here (it doesn't really
+                                       // hurt anything, but does make tests a bit simpler).
+                                       failed_channels.last_mut().unwrap().0 = Vec::new();
                                        if let Ok(update) = self.get_channel_update(&channel) {
                                                new_events.push(events::Event::BroadcastChannelUpdate {
                                                        msg: update
@@ -1127,12 +1206,9 @@ impl ChainListener for ChannelManager {
                                }
                                true
                        });
-                       for to_remove in short_to_ids_to_remove {
-                               channel_state.short_to_id.remove(&to_remove);
-                       }
-                       for to_insert in short_to_ids_to_insert {
-                               channel_state.short_to_id.insert(to_insert.0, to_insert.1);
-                       }
+               }
+               for failure in failed_channels.drain(..) {
+                       self.finish_force_close_channel(failure);
                }
                let mut pending_events = self.pending_events.lock().unwrap();
                for funding_locked in new_events.drain(..) {
@@ -1143,23 +1219,38 @@ impl ChainListener for ChannelManager {
 
        /// We force-close the channel without letting our counterparty participate in the shutdown
        fn block_disconnected(&self, header: &BlockHeader) {
-               let mut channel_lock = self.channel_state.lock().unwrap();
-               let channel_state = channel_lock.borrow_parts();
-               let short_to_id = channel_state.short_to_id;
-               channel_state.by_id.retain(|_,  v| {
-                       if v.block_disconnected(header) {
-                               let tx = v.force_shutdown();
-                               for broadcast_tx in tx {
-                                       self.tx_broadcaster.broadcast_transaction(&broadcast_tx);
-                               }
-                               if let Some(short_id) = v.get_short_channel_id() {
-                                       short_to_id.remove(&short_id);
+               let mut new_events = Vec::new();
+               let mut failed_channels = Vec::new();
+               {
+                       let mut channel_lock = self.channel_state.lock().unwrap();
+                       let channel_state = channel_lock.borrow_parts();
+                       let short_to_id = channel_state.short_to_id;
+                       channel_state.by_id.retain(|_,  v| {
+                               if v.block_disconnected(header) {
+                                       if let Some(short_id) = v.get_short_channel_id() {
+                                               short_to_id.remove(&short_id);
+                                       }
+                                       failed_channels.push(v.force_shutdown());
+                                       if let Ok(update) = self.get_channel_update(&v) {
+                                               new_events.push(events::Event::BroadcastChannelUpdate {
+                                                       msg: update
+                                               });
+                                       }
+                                       false
+                               } else {
+                                       true
                                }
-                               false
-                       } else {
-                               true
+                       });
+               }
+               for failure in failed_channels.drain(..) {
+                       self.finish_force_close_channel(failure);
+               }
+               if !new_events.is_empty() {
+                       let mut pending_events = self.pending_events.lock().unwrap();
+                       for funding_locked in new_events.drain(..) {
+                               pending_events.push(funding_locked);
                        }
-               });
+               }
                self.latest_block_height.fetch_sub(1, Ordering::AcqRel);
        }
 }
@@ -1177,13 +1268,13 @@ impl ChannelMessageHandler for ChannelManager {
 
                let chan_keys = if cfg!(feature = "fuzztarget") {
                        ChannelKeys {
-                               funding_key:               SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               revocation_base_key:       SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               payment_base_key:          SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               delayed_payment_base_key:  SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               htlc_base_key:             SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               channel_close_key:         SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
-                               channel_monitor_claim_key: SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]).unwrap(),
+                               funding_key:               SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0]).unwrap(),
+                               revocation_base_key:       SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0]).unwrap(),
+                               payment_base_key:          SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0]).unwrap(),
+                               delayed_payment_base_key:  SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0]).unwrap(),
+                               htlc_base_key:             SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0]).unwrap(),
+                               channel_close_key:         SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 0]).unwrap(),
+                               channel_monitor_claim_key: SecretKey::from_slice(&self.secp_ctx, &[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 7, 0]).unwrap(),
                                commitment_seed: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
                        }
                } else {
@@ -1544,20 +1635,14 @@ impl ChannelMessageHandler for ChannelManager {
                // destination. That's OK since those nodes are probably busted or trying to do network
                // mapping through repeated loops. In either case, we want them to stop talking to us, so
                // we send permanent_node_failure.
-               match &claimable_htlcs_entry {
-                       &hash_map::Entry::Occupied(ref e) => {
-                               let mut acceptable_cycle = false;
-                               match e.get() {
-                                       &PendingOutboundHTLC::OutboundRoute { .. } => {
-                                               acceptable_cycle = pending_forward_info.short_channel_id == 0;
-                                       },
-                                       _ => {},
-                               }
-                               if !acceptable_cycle {
-                                       return_err!("Payment looped through us twice", 0x4000 | 0x2000 | 2, &[0;0]);
-                               }
-                       },
-                       _ => {},
+               if let &hash_map::Entry::Occupied(ref e) = &claimable_htlcs_entry {
+                       let mut acceptable_cycle = false;
+                       if let &PendingOutboundHTLC::OutboundRoute { .. } = e.get() {
+                               acceptable_cycle = pending_forward_info.short_channel_id == 0;
+                       }
+                       if !acceptable_cycle {
+                               return_err!("Payment looped through us twice", 0x4000 | 0x2000 | 2, &[0;0]);
+                       }
                }
 
                let (source_short_channel_id, res) = match channel_state.by_id.get_mut(&msg.channel_id) {
@@ -1572,7 +1657,7 @@ impl ChannelMessageHandler for ChannelManager {
                                pending_forward_info.prev_short_channel_id = short_channel_id;
                                (short_channel_id, chan.update_add_htlc(&msg, pending_forward_info)?)
                        },
-                       None => return Err(HandleError{err: "Failed to find corresponding channel", action: None}), //TODO: panic?
+                       None => return Err(HandleError{err: "Failed to find corresponding channel", action: None}),
                };
 
                match claimable_htlcs_entry {
@@ -1582,7 +1667,7 @@ impl ChannelMessageHandler for ChannelManager {
                                        &mut PendingOutboundHTLC::OutboundRoute { ref route, ref session_priv } => {
                                                (route.clone(), session_priv.clone())
                                        },
-                                       _ => { panic!("WAT") },
+                                       _ => unreachable!(),
                                };
                                *outbound_route = PendingOutboundHTLC::CycledRoute {
                                        source_short_channel_id,
@@ -1608,22 +1693,16 @@ impl ChannelMessageHandler for ChannelManager {
                // is broken, we may have enough info to get our own money!
                self.claim_funds_internal(msg.payment_preimage.clone(), false);
 
-               let monitor = {
-                       let mut channel_state = self.channel_state.lock().unwrap();
-                       match channel_state.by_id.get_mut(&msg.channel_id) {
-                               Some(chan) => {
-                                       if chan.get_their_node_id() != *their_node_id {
-                                               return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
-                                       }
-                                       chan.update_fulfill_htlc(&msg)?
-                               },
-                               None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
-                       }
-               };
-               if let Err(_e) = self.monitor.add_update_monitor(monitor.get_funding_txo().unwrap(), monitor) {
-                       unimplemented!();
+               let mut channel_state = self.channel_state.lock().unwrap();
+               match channel_state.by_id.get_mut(&msg.channel_id) {
+                       Some(chan) => {
+                               if chan.get_their_node_id() != *their_node_id {
+                                       return Err(HandleError{err: "Got a message for a channel from the wrong node!", action: None})
+                               }
+                               chan.update_fulfill_htlc(&msg)
+                       },
+                       None => return Err(HandleError{err: "Failed to find corresponding channel", action: None})
                }
-               Ok(())
        }
 
        fn handle_update_fail_htlc(&self, their_node_id: &PublicKey, msg: &msgs::UpdateFailHTLC) -> Result<Option<msgs::HTLCFailChannelUpdate>, HandleError> {
@@ -1838,6 +1917,7 @@ impl ChannelMessageHandler for ChannelManager {
 
        fn peer_disconnected(&self, their_node_id: &PublicKey, no_connection_possible: bool) {
                let mut new_events = Vec::new();
+               let mut failed_channels = Vec::new();
                {
                        let mut channel_state_lock = self.channel_state.lock().unwrap();
                        let channel_state = channel_state_lock.borrow_parts();
@@ -1848,10 +1928,7 @@ impl ChannelMessageHandler for ChannelManager {
                                                if let Some(short_id) = chan.get_short_channel_id() {
                                                        short_to_id.remove(&short_id);
                                                }
-                                               let txn_to_broadcast = chan.force_shutdown();
-                                               for tx in txn_to_broadcast {
-                                                       self.tx_broadcaster.broadcast_transaction(&tx);
-                                               }
+                                               failed_channels.push(chan.force_shutdown());
                                                if let Ok(update) = self.get_channel_update(&chan) {
                                                        new_events.push(events::Event::BroadcastChannelUpdate {
                                                                msg: update
@@ -1872,6 +1949,9 @@ impl ChannelMessageHandler for ChannelManager {
                                }
                        }
                }
+               for failure in failed_channels.drain(..) {
+                       self.finish_force_close_channel(failure);
+               }
                if !new_events.is_empty() {
                        let mut pending_events = self.pending_events.lock().unwrap();
                        for event in new_events.drain(..) {
@@ -1893,7 +1973,6 @@ mod tests {
        use util::test_utils;
        use util::events::{Event, EventsProvider};
 
-       use bitcoin::util::misc::hex_bytes;
        use bitcoin::util::hash::Sha256dHash;
        use bitcoin::blockdata::block::{Block, BlockHeader};
        use bitcoin::blockdata::transaction::{Transaction, TxOut};
@@ -1901,6 +1980,8 @@ mod tests {
        use bitcoin::network::serialize::serialize;
        use bitcoin::network::serialize::BitcoinHash;
 
+       use hex;
+
        use secp256k1::Secp256k1;
        use secp256k1::key::{PublicKey,SecretKey};
 
@@ -1922,29 +2003,29 @@ mod tests {
                let route = Route {
                        hops: vec!(
                                        RouteHop {
-                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex_bytes("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()[..]).unwrap(),
+                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex::decode("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()[..]).unwrap(),
                                                short_channel_id: 0, fee_msat: 0, cltv_expiry_delta: 0 // Test vectors are garbage and not generateble from a RouteHop, we fill in payloads manually
                                        },
                                        RouteHop {
-                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex_bytes("0324653eac434488002cc06bbfb7f10fe18991e35f9fe4302dbea6d2353dc0ab1c").unwrap()[..]).unwrap(),
+                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex::decode("0324653eac434488002cc06bbfb7f10fe18991e35f9fe4302dbea6d2353dc0ab1c").unwrap()[..]).unwrap(),
                                                short_channel_id: 0, fee_msat: 0, cltv_expiry_delta: 0 // Test vectors are garbage and not generateble from a RouteHop, we fill in payloads manually
                                        },
                                        RouteHop {
-                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex_bytes("027f31ebc5462c1fdce1b737ecff52d37d75dea43ce11c74d25aa297165faa2007").unwrap()[..]).unwrap(),
+                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex::decode("027f31ebc5462c1fdce1b737ecff52d37d75dea43ce11c74d25aa297165faa2007").unwrap()[..]).unwrap(),
                                                short_channel_id: 0, fee_msat: 0, cltv_expiry_delta: 0 // Test vectors are garbage and not generateble from a RouteHop, we fill in payloads manually
                                        },
                                        RouteHop {
-                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex_bytes("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]).unwrap(),
+                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex::decode("032c0b7cf95324a07d05398b240174dc0c2be444d96b159aa6c7f7b1e668680991").unwrap()[..]).unwrap(),
                                                short_channel_id: 0, fee_msat: 0, cltv_expiry_delta: 0 // Test vectors are garbage and not generateble from a RouteHop, we fill in payloads manually
                                        },
                                        RouteHop {
-                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex_bytes("02edabbd16b41c8371b92ef2f04c1185b4f03b6dcd52ba9b78d9d7c89c8f221145").unwrap()[..]).unwrap(),
+                                               pubkey: PublicKey::from_slice(&secp_ctx, &hex::decode("02edabbd16b41c8371b92ef2f04c1185b4f03b6dcd52ba9b78d9d7c89c8f221145").unwrap()[..]).unwrap(),
                                                short_channel_id: 0, fee_msat: 0, cltv_expiry_delta: 0 // Test vectors are garbage and not generateble from a RouteHop, we fill in payloads manually
                                        },
                        ),
                };
 
-               let session_priv = SecretKey::from_slice(&secp_ctx, &hex_bytes("4141414141414141414141414141414141414141414141414141414141414141").unwrap()[..]).unwrap();
+               let session_priv = SecretKey::from_slice(&secp_ctx, &hex::decode("4141414141414141414141414141414141414141414141414141414141414141").unwrap()[..]).unwrap();
 
                let onion_keys = ChannelManager::construct_onion_keys(&secp_ctx, &route, &session_priv).unwrap();
                assert_eq!(onion_keys.len(), route.hops.len());
@@ -1956,35 +2037,35 @@ mod tests {
                // Packet creation test vectors from BOLT 4
                let onion_keys = build_test_onion_keys();
 
-               assert_eq!(onion_keys[0].shared_secret[..], hex_bytes("53eb63ea8a3fec3b3cd433b85cd62a4b145e1dda09391b348c4e1cd36a03ea66").unwrap()[..]);
-               assert_eq!(onion_keys[0].blinding_factor[..], hex_bytes("2ec2e5da605776054187180343287683aa6a51b4b1c04d6dd49c45d8cffb3c36").unwrap()[..]);
-               assert_eq!(onion_keys[0].ephemeral_pubkey.serialize()[..], hex_bytes("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()[..]);
-               assert_eq!(onion_keys[0].rho, hex_bytes("ce496ec94def95aadd4bec15cdb41a740c9f2b62347c4917325fcc6fb0453986").unwrap()[..]);
-               assert_eq!(onion_keys[0].mu, hex_bytes("b57061dc6d0a2b9f261ac410c8b26d64ac5506cbba30267a649c28c179400eba").unwrap()[..]);
-
-               assert_eq!(onion_keys[1].shared_secret[..], hex_bytes("a6519e98832a0b179f62123b3567c106db99ee37bef036e783263602f3488fae").unwrap()[..]);
-               assert_eq!(onion_keys[1].blinding_factor[..], hex_bytes("bf66c28bc22e598cfd574a1931a2bafbca09163df2261e6d0056b2610dab938f").unwrap()[..]);
-               assert_eq!(onion_keys[1].ephemeral_pubkey.serialize()[..], hex_bytes("028f9438bfbf7feac2e108d677e3a82da596be706cc1cf342b75c7b7e22bf4e6e2").unwrap()[..]);
-               assert_eq!(onion_keys[1].rho, hex_bytes("450ffcabc6449094918ebe13d4f03e433d20a3d28a768203337bc40b6e4b2c59").unwrap()[..]);
-               assert_eq!(onion_keys[1].mu, hex_bytes("05ed2b4a3fb023c2ff5dd6ed4b9b6ea7383f5cfe9d59c11d121ec2c81ca2eea9").unwrap()[..]);
-
-               assert_eq!(onion_keys[2].shared_secret[..], hex_bytes("3a6b412548762f0dbccce5c7ae7bb8147d1caf9b5471c34120b30bc9c04891cc").unwrap()[..]);
-               assert_eq!(onion_keys[2].blinding_factor[..], hex_bytes("a1f2dadd184eb1627049673f18c6325814384facdee5bfd935d9cb031a1698a5").unwrap()[..]);
-               assert_eq!(onion_keys[2].ephemeral_pubkey.serialize()[..], hex_bytes("03bfd8225241ea71cd0843db7709f4c222f62ff2d4516fd38b39914ab6b83e0da0").unwrap()[..]);
-               assert_eq!(onion_keys[2].rho, hex_bytes("11bf5c4f960239cb37833936aa3d02cea82c0f39fd35f566109c41f9eac8deea").unwrap()[..]);
-               assert_eq!(onion_keys[2].mu, hex_bytes("caafe2820fa00eb2eeb78695ae452eba38f5a53ed6d53518c5c6edf76f3f5b78").unwrap()[..]);
-
-               assert_eq!(onion_keys[3].shared_secret[..], hex_bytes("21e13c2d7cfe7e18836df50872466117a295783ab8aab0e7ecc8c725503ad02d").unwrap()[..]);
-               assert_eq!(onion_keys[3].blinding_factor[..], hex_bytes("7cfe0b699f35525029ae0fa437c69d0f20f7ed4e3916133f9cacbb13c82ff262").unwrap()[..]);
-               assert_eq!(onion_keys[3].ephemeral_pubkey.serialize()[..], hex_bytes("031dde6926381289671300239ea8e57ffaf9bebd05b9a5b95beaf07af05cd43595").unwrap()[..]);
-               assert_eq!(onion_keys[3].rho, hex_bytes("cbe784ab745c13ff5cffc2fbe3e84424aa0fd669b8ead4ee562901a4a4e89e9e").unwrap()[..]);
-               assert_eq!(onion_keys[3].mu, hex_bytes("5052aa1b3d9f0655a0932e50d42f0c9ba0705142c25d225515c45f47c0036ee9").unwrap()[..]);
-
-               assert_eq!(onion_keys[4].shared_secret[..], hex_bytes("b5756b9b542727dbafc6765a49488b023a725d631af688fc031217e90770c328").unwrap()[..]);
-               assert_eq!(onion_keys[4].blinding_factor[..], hex_bytes("c96e00dddaf57e7edcd4fb5954be5b65b09f17cb6d20651b4e90315be5779205").unwrap()[..]);
-               assert_eq!(onion_keys[4].ephemeral_pubkey.serialize()[..], hex_bytes("03a214ebd875aab6ddfd77f22c5e7311d7f77f17a169e599f157bbcdae8bf071f4").unwrap()[..]);
-               assert_eq!(onion_keys[4].rho, hex_bytes("034e18b8cc718e8af6339106e706c52d8df89e2b1f7e9142d996acf88df8799b").unwrap()[..]);
-               assert_eq!(onion_keys[4].mu, hex_bytes("8e45e5c61c2b24cb6382444db6698727afb063adecd72aada233d4bf273d975a").unwrap()[..]);
+               assert_eq!(onion_keys[0].shared_secret[..], hex::decode("53eb63ea8a3fec3b3cd433b85cd62a4b145e1dda09391b348c4e1cd36a03ea66").unwrap()[..]);
+               assert_eq!(onion_keys[0].blinding_factor[..], hex::decode("2ec2e5da605776054187180343287683aa6a51b4b1c04d6dd49c45d8cffb3c36").unwrap()[..]);
+               assert_eq!(onion_keys[0].ephemeral_pubkey.serialize()[..], hex::decode("02eec7245d6b7d2ccb30380bfbe2a3648cd7a942653f5aa340edcea1f283686619").unwrap()[..]);
+               assert_eq!(onion_keys[0].rho, hex::decode("ce496ec94def95aadd4bec15cdb41a740c9f2b62347c4917325fcc6fb0453986").unwrap()[..]);
+               assert_eq!(onion_keys[0].mu, hex::decode("b57061dc6d0a2b9f261ac410c8b26d64ac5506cbba30267a649c28c179400eba").unwrap()[..]);
+
+               assert_eq!(onion_keys[1].shared_secret[..], hex::decode("a6519e98832a0b179f62123b3567c106db99ee37bef036e783263602f3488fae").unwrap()[..]);
+               assert_eq!(onion_keys[1].blinding_factor[..], hex::decode("bf66c28bc22e598cfd574a1931a2bafbca09163df2261e6d0056b2610dab938f").unwrap()[..]);
+               assert_eq!(onion_keys[1].ephemeral_pubkey.serialize()[..], hex::decode("028f9438bfbf7feac2e108d677e3a82da596be706cc1cf342b75c7b7e22bf4e6e2").unwrap()[..]);
+               assert_eq!(onion_keys[1].rho, hex::decode("450ffcabc6449094918ebe13d4f03e433d20a3d28a768203337bc40b6e4b2c59").unwrap()[..]);
+               assert_eq!(onion_keys[1].mu, hex::decode("05ed2b4a3fb023c2ff5dd6ed4b9b6ea7383f5cfe9d59c11d121ec2c81ca2eea9").unwrap()[..]);
+
+               assert_eq!(onion_keys[2].shared_secret[..], hex::decode("3a6b412548762f0dbccce5c7ae7bb8147d1caf9b5471c34120b30bc9c04891cc").unwrap()[..]);
+               assert_eq!(onion_keys[2].blinding_factor[..], hex::decode("a1f2dadd184eb1627049673f18c6325814384facdee5bfd935d9cb031a1698a5").unwrap()[..]);
+               assert_eq!(onion_keys[2].ephemeral_pubkey.serialize()[..], hex::decode("03bfd8225241ea71cd0843db7709f4c222f62ff2d4516fd38b39914ab6b83e0da0").unwrap()[..]);
+               assert_eq!(onion_keys[2].rho, hex::decode("11bf5c4f960239cb37833936aa3d02cea82c0f39fd35f566109c41f9eac8deea").unwrap()[..]);
+               assert_eq!(onion_keys[2].mu, hex::decode("caafe2820fa00eb2eeb78695ae452eba38f5a53ed6d53518c5c6edf76f3f5b78").unwrap()[..]);
+
+               assert_eq!(onion_keys[3].shared_secret[..], hex::decode("21e13c2d7cfe7e18836df50872466117a295783ab8aab0e7ecc8c725503ad02d").unwrap()[..]);
+               assert_eq!(onion_keys[3].blinding_factor[..], hex::decode("7cfe0b699f35525029ae0fa437c69d0f20f7ed4e3916133f9cacbb13c82ff262").unwrap()[..]);
+               assert_eq!(onion_keys[3].ephemeral_pubkey.serialize()[..], hex::decode("031dde6926381289671300239ea8e57ffaf9bebd05b9a5b95beaf07af05cd43595").unwrap()[..]);
+               assert_eq!(onion_keys[3].rho, hex::decode("cbe784ab745c13ff5cffc2fbe3e84424aa0fd669b8ead4ee562901a4a4e89e9e").unwrap()[..]);
+               assert_eq!(onion_keys[3].mu, hex::decode("5052aa1b3d9f0655a0932e50d42f0c9ba0705142c25d225515c45f47c0036ee9").unwrap()[..]);
+
+               assert_eq!(onion_keys[4].shared_secret[..], hex::decode("b5756b9b542727dbafc6765a49488b023a725d631af688fc031217e90770c328").unwrap()[..]);
+               assert_eq!(onion_keys[4].blinding_factor[..], hex::decode("c96e00dddaf57e7edcd4fb5954be5b65b09f17cb6d20651b4e90315be5779205").unwrap()[..]);
+               assert_eq!(onion_keys[4].ephemeral_pubkey.serialize()[..], hex::decode("03a214ebd875aab6ddfd77f22c5e7311d7f77f17a169e599f157bbcdae8bf071f4").unwrap()[..]);
+               assert_eq!(onion_keys[4].rho, hex::decode("034e18b8cc718e8af6339106e706c52d8df89e2b1f7e9142d996acf88df8799b").unwrap()[..]);
+               assert_eq!(onion_keys[4].mu, hex::decode("8e45e5c61c2b24cb6382444db6698727afb063adecd72aada233d4bf273d975a").unwrap()[..]);
 
                // Test vectors below are flat-out wrong: they claim to set outgoing_cltv_value to non-0 :/
                let payloads = vec!(
@@ -2038,7 +2119,7 @@ mod tests {
                let packet = ChannelManager::construct_onion_packet(payloads, onion_keys, &[0x42; 32]).unwrap();
                // Just check the final packet encoding, as it includes all the per-hop vectors in it
                // anyway...
-               assert_eq!(packet.encode(), hex_bytes("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").unwrap());
+               assert_eq!(packet.encode(), hex::decode("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").unwrap());
        }
 
        #[test]
@@ -2047,22 +2128,22 @@ mod tests {
 
                let onion_keys = build_test_onion_keys();
                let onion_error = ChannelManager::build_failure_packet(&onion_keys[4].shared_secret, 0x2002, &[0; 0]);
-               assert_eq!(onion_error.encode(), hex_bytes("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").unwrap());
+               assert_eq!(onion_error.encode(), hex::decode("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").unwrap());
 
                let onion_packet_1 = ChannelManager::encrypt_failure_packet(&onion_keys[4].shared_secret, &onion_error.encode()[..]);
-               assert_eq!(onion_packet_1.data, hex_bytes("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").unwrap());
+               assert_eq!(onion_packet_1.data, hex::decode("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").unwrap());
 
                let onion_packet_2 = ChannelManager::encrypt_failure_packet(&onion_keys[3].shared_secret, &onion_packet_1.data[..]);
-               assert_eq!(onion_packet_2.data, hex_bytes("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").unwrap());
+               assert_eq!(onion_packet_2.data, hex::decode("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").unwrap());
 
                let onion_packet_3 = ChannelManager::encrypt_failure_packet(&onion_keys[2].shared_secret, &onion_packet_2.data[..]);
-               assert_eq!(onion_packet_3.data, hex_bytes("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").unwrap());
+               assert_eq!(onion_packet_3.data, hex::decode("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").unwrap());
 
                let onion_packet_4 = ChannelManager::encrypt_failure_packet(&onion_keys[1].shared_secret, &onion_packet_3.data[..]);
-               assert_eq!(onion_packet_4.data, hex_bytes("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").unwrap());
+               assert_eq!(onion_packet_4.data, hex::decode("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").unwrap());
 
                let onion_packet_5 = ChannelManager::encrypt_failure_packet(&onion_keys[0].shared_secret, &onion_packet_4.data[..]);
-               assert_eq!(onion_packet_5.data, hex_bytes("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").unwrap());
+               assert_eq!(onion_packet_5.data, hex::decode("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").unwrap());
        }
 
        fn confirm_transaction(chain: &chaininterface::ChainWatchInterfaceUtil, tx: &Transaction, chan_id: u32) {
@@ -2416,10 +2497,9 @@ mod tests {
                                        {
                                                let mut added_monitors = $node.chan_monitor.added_monitors.lock().unwrap();
                                                if $last_node {
-                                                       assert_eq!(added_monitors.len(), 1);
+                                                       assert_eq!(added_monitors.len(), 0);
                                                } else {
-                                                       assert_eq!(added_monitors.len(), 2);
-                                                       assert!(added_monitors[0].0 != added_monitors[1].0);
+                                                       assert_eq!(added_monitors.len(), 1);
                                                }
                                                added_monitors.clear();
                                        }
@@ -2862,7 +2942,7 @@ mod tests {
                        let mut node_txn = test_txn_broadcast(&nodes[1], &chan_1, None, HTLCType::NONE);
                        let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
                        nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
-                       assert_eq!(nodes[0].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 0);
+                       test_txn_broadcast(&nodes[0], &chan_1, None, HTLCType::NONE);
                }
                get_announce_close_broadcast_events(&nodes, 0, 1);
                assert_eq!(nodes[0].node.list_channels().len(), 0);
@@ -2877,7 +2957,7 @@ mod tests {
                        let mut node_txn = test_txn_broadcast(&nodes[1], &chan_2, None, HTLCType::TIMEOUT);
                        let header = BlockHeader { version: 0x20000000, prev_blockhash: Default::default(), merkle_root: Default::default(), time: 42, bits: 42, nonce: 42 };
                        nodes[2].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![node_txn.drain(..).next().unwrap()] }, 1);
-                       assert_eq!(nodes[2].tx_broadcaster.txn_broadcasted.lock().unwrap().len(), 0);
+                       test_txn_broadcast(&nodes[2], &chan_2, None, HTLCType::NONE);
                }
                get_announce_close_broadcast_events(&nodes, 1, 2);
                assert_eq!(nodes[1].node.list_channels().len(), 0);
@@ -2972,14 +3052,15 @@ mod tests {
                        nodes[1].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
                        {
                                let mut node_txn = nodes[1].tx_broadcaster.txn_broadcasted.lock().unwrap();
-                               assert_eq!(node_txn.len(), 1);
+                               assert_eq!(node_txn.len(), 2);
                                assert_eq!(node_txn[0].input.len(), 1);
 
                                let mut funding_tx_map = HashMap::new();
                                funding_tx_map.insert(revoked_local_txn[0].txid(), revoked_local_txn[0].clone());
                                node_txn[0].verify(&funding_tx_map).unwrap();
-                               node_txn.clear();
+                               node_txn.swap_remove(0);
                        }
+                       test_txn_broadcast(&nodes[1], &chan_5, None, HTLCType::NONE);
 
                        nodes[0].chain_monitor.block_connected_with_filtering(&Block { header, txdata: vec![revoked_local_txn[0].clone()] }, 1);
                        let node_txn = test_txn_broadcast(&nodes[0], &chan_5, Some(revoked_local_txn[0].clone()), HTLCType::TIMEOUT);