X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;ds=sidebyside;f=lightning%2Fsrc%2Fln%2Fchan_utils.rs;h=4438579657eecc74e6cf1cb9458b339c2db82292;hb=f24bbd63cc72e32efaa23844f19f4a7952fb22cb;hp=f86c53bc3bc7b01584ba9720014ec23b23330263;hpb=a21decf0db4481c106a7d8ca5b5a1fd87263c9b6;p=rust-lightning

diff --git a/lightning/src/ln/chan_utils.rs b/lightning/src/ln/chan_utils.rs
index f86c53bc..44385796 100644
--- a/lightning/src/ln/chan_utils.rs
+++ b/lightning/src/ln/chan_utils.rs
@@ -8,8 +8,7 @@
 // licenses.
 
 //! Various utilities for building scripts and deriving keys related to channels. These are
-//! largely of interest for those implementing chain::keysinterface::ChannelKeys message signing
-//! by hand.
+//! largely of interest for those implementing chain::keysinterface::Sign message signing by hand.
 
 use bitcoin::blockdata::script::{Script,Builder};
 use bitcoin::blockdata::opcodes;
@@ -21,7 +20,7 @@ use bitcoin::hashes::sha256::Hash as Sha256;
 use bitcoin::hashes::ripemd160::Hash as Ripemd160;
 use bitcoin::hash_types::{Txid, PubkeyHash};
 
-use ln::channelmanager::{PaymentHash, PaymentPreimage};
+use ln::{PaymentHash, PaymentPreimage};
 use ln::msgs::DecodeError;
 use util::ser::{Readable, Writeable, Writer, MAX_BUF_SIZE};
 use util::byte_utils;
@@ -40,6 +39,7 @@ use std::io::Read;
 use std::ops::Deref;
 use chain;
 
+// Maximum size of a serialized HTLCOutputInCommitment
 const HTLC_OUTPUT_IN_COMMITMENT_SIZE: usize = 1 + 8 + 4 + 32 + 5;
 
 pub(crate) const MAX_HTLCS: u16 = 483;
@@ -321,7 +321,8 @@ pub struct TxCreationKeys {
 	/// Broadcaster's Payment Key (which isn't allowed to be spent from for some delay)
 	pub broadcaster_delayed_payment_key: PublicKey,
 }
-impl_writeable!(TxCreationKeys, 33*6,
+
+impl_writeable!(TxCreationKeys, 33*5,
 	{ per_commitment_point, revocation_key, broadcaster_htlc_key, countersignatory_htlc_key, broadcaster_delayed_payment_key });
 
 /// One counterparty's public keys which do not change over the life of a channel.
@@ -428,7 +429,10 @@ pub struct HTLCOutputInCommitment {
 	pub transaction_output_index: Option<u32>,
 }
 
-impl_writeable!(HTLCOutputInCommitment, HTLC_OUTPUT_IN_COMMITMENT_SIZE, {
+impl_writeable_len_match!(HTLCOutputInCommitment, {
+		{ HTLCOutputInCommitment { transaction_output_index: None, .. }, HTLC_OUTPUT_IN_COMMITMENT_SIZE - 4 },
+		{ _, HTLC_OUTPUT_IN_COMMITMENT_SIZE }
+	}, {
 	offered,
 	amount_msat,
 	cltv_expiry,