X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=src%2Fln%2Fchannelmonitor.rs;h=27010d522dfe7037485c4bfac6f18237417df829;hb=e9f9cda986a37a6d7d84f9f5856d06b477a2374f;hp=d5529af9c99e579d7f169446cf50f4022b151c70;hpb=a5ec986fad2809f817c148686e2370207f63c44c;p=rust-lightning

diff --git a/src/ln/channelmonitor.rs b/src/ln/channelmonitor.rs
index d5529af9..27010d52 100644
--- a/src/ln/channelmonitor.rs
+++ b/src/ln/channelmonitor.rs
@@ -4,7 +4,6 @@ use bitcoin::blockdata::script::Script;
 use bitcoin::util::hash::Sha256dHash;
 use bitcoin::util::bip143;
 
-use crypto::sha2::Sha256;
 use crypto::digest::Digest;
 
 use secp256k1::{Secp256k1,Message,Signature};
@@ -14,6 +13,7 @@ use ln::msgs::HandleError;
 use ln::chan_utils;
 use ln::chan_utils::HTLCOutputInCommitment;
 use chain::chaininterface::{ChainListener, ChainWatchInterface, BroadcasterInterface};
+use util::sha2::Sha256;
 
 use std::collections::HashMap;
 use std::sync::{Arc,Mutex};
@@ -270,6 +270,12 @@ impl ChannelMonitor {
 		min
 	}
 
+	pub fn provide_payment_preimage(&mut self, payment_preimage: &[u8; 32]) {
+		//TODO: Some kind of timeout here or ability to mark all states containing this preimage
+		//revoked?
+		self.payment_preimages.push(payment_preimage.clone());
+	}
+
 	#[inline]
 	fn check_spend_transaction(&self, tx: &Transaction, height: u32) -> Vec<Transaction> {
 		// Most secp and related errors trying to create keys means we have no hope of constructing
@@ -323,6 +329,7 @@ impl ChannelMonitor {
 						prev_index: per_commitment_data.revoked_output_index,
 						script_sig: Script::new(),
 						sequence: 0xffffffff,
+						witness: Vec::new(),
 					});
 					values.push(tx.output[per_commitment_data.revoked_output_index as usize].value);
 					total_value += tx.output[per_commitment_data.revoked_output_index as usize].value;
@@ -340,6 +347,7 @@ impl ChannelMonitor {
 								prev_index: htlc.transaction_output_index,
 								script_sig: Script::new(),
 								sequence: 0xffffffff,
+								witness: Vec::new(),
 							});
 							values.push(tx.output[htlc.transaction_output_index as usize].value);
 							total_value += htlc.amount_msat / 1000;
@@ -358,6 +366,7 @@ impl ChannelMonitor {
 								prev_index: idx as u32,
 								script_sig: Script::new(),
 								sequence: 0xffffffff,
+								witness: Vec::new(),
 							});
 							values.push(outp.value);
 							total_value += outp.value;
@@ -378,18 +387,16 @@ impl ChannelMonitor {
 				lock_time: 0,
 				input: inputs,
 				output: outputs,
-				witness: Vec::new(),
 			};
 
 			let mut values_drain = values.drain(..);
 
 			// First input is the generic revokeable_redeemscript
-			// TODO: Make one SighashComponents and use that throughout instead of re-building it
-			// each time.
+			let sighash_parts = bip143::SighashComponents::new(&spend_tx);
 			{
 				let sig = match self.revocation_base_key {
 					RevocationStorage::PrivMode { ref revocation_base_key } => {
-						let sighash = ignore_error!(Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx, 0, &revokeable_redeemscript, values_drain.next().unwrap())[..]));
+						let sighash = ignore_error!(Message::from_slice(&sighash_parts.sighash_all(&spend_tx.input[0], &revokeable_redeemscript, values_drain.next().unwrap())[..]));
 						let revocation_key = ignore_error!(chan_utils::derive_private_revocation_key(&self.secp_ctx, &per_commitment_key, &revocation_base_key));
 						ignore_error!(self.secp_ctx.sign(&sighash, &revocation_key))
 					},
@@ -398,17 +405,16 @@ impl ChannelMonitor {
 					}
 				};
 
-				spend_tx.witness.push(Vec::new());
-				spend_tx.witness[0].push(sig.serialize_der(&self.secp_ctx).to_vec());
-				spend_tx.witness[0][0].push(SigHashType::All as u8);
-				spend_tx.witness[0].push(vec!(1)); // First if branch is revocation_key
+				spend_tx.input[0].witness.push(sig.serialize_der(&self.secp_ctx).to_vec());
+				spend_tx.input[0].witness[0].push(SigHashType::All as u8);
+				spend_tx.input[0].witness.push(vec!(1)); // First if branch is revocation_key
 			}
 
 			match self.claimable_outpoints.get(&commitment_txid) {
 				None => {},
 				Some(per_commitment_data) => {
 					let mut htlc_idx = 0;
-					for (idx, _) in spend_tx.input.iter().enumerate() {
+					for (idx, input) in spend_tx.input.iter_mut().enumerate() {
 						if idx == 0 { continue; } // We already signed the first input
 
 						let mut htlc;
@@ -421,7 +427,7 @@ impl ChannelMonitor {
 						let sig = match self.revocation_base_key {
 							RevocationStorage::PrivMode { ref revocation_base_key } => {
 								let htlc_redeemscript = chan_utils::get_htlc_redeemscript_with_explicit_keys(htlc, &a_htlc_key, &b_htlc_key, &revocation_pubkey, htlc.offered);
-								let sighash = ignore_error!(Message::from_slice(&bip143::SighashComponents::new(&spend_tx).sighash_all(&spend_tx, idx, &htlc_redeemscript, values_drain.next().unwrap())[..]));
+								let sighash = ignore_error!(Message::from_slice(&sighash_parts.sighash_all(&input, &htlc_redeemscript, values_drain.next().unwrap())[..]));
 
 								let revocation_key = ignore_error!(chan_utils::derive_private_revocation_key(&self.secp_ctx, &per_commitment_key, &revocation_base_key));
 								ignore_error!(self.secp_ctx.sign(&sighash, &revocation_key))
@@ -431,10 +437,9 @@ impl ChannelMonitor {
 							}
 						};
 
-						spend_tx.witness.push(Vec::new());
-						spend_tx.witness[0].push(revocation_pubkey.serialize().to_vec()); // First if branch is revocation_key
-						spend_tx.witness[0].push(sig.serialize_der(&self.secp_ctx).to_vec());
-						spend_tx.witness[0][0].push(SigHashType::All as u8);
+						input.witness.push(revocation_pubkey.serialize().to_vec()); // First if branch is revocation_key
+						input.witness.push(sig.serialize_der(&self.secp_ctx).to_vec());
+						input.witness[0].push(SigHashType::All as u8);
 					}
 				}
 			}