X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning%2Fsrc%2Fln%2Fpeer_handler.rs;h=80db0dc0b07e269233afaaad6058ae36aaef288a;hb=d6321e6e11b3e1b11e26617d3bab0b8c21da0b5b;hp=6712abeb109c59b60c687f8ecf38c150eb8d76dd;hpb=990e34679828ed4eca7bc8e179869f497b5dcc98;p=rust-lightning

diff --git a/lightning/src/ln/peer_handler.rs b/lightning/src/ln/peer_handler.rs
index 6712abeb..80db0dc0 100644
--- a/lightning/src/ln/peer_handler.rs
+++ b/lightning/src/ln/peer_handler.rs
@@ -21,11 +21,11 @@ use ln::features::{InitFeatures, NodeFeatures};
 use ln::msgs;
 use ln::msgs::{ChannelMessageHandler, LightningError, NetAddress, OnionMessageHandler, RoutingMessageHandler};
 use ln::channelmanager::{SimpleArcChannelManager, SimpleRefChannelManager};
-use util::ser::{VecWriter, Writeable, Writer};
+use util::ser::{MaybeReadableArgs, VecWriter, Writeable, Writer};
 use ln::peer_channel_encryptor::{PeerChannelEncryptor,NextNoiseStep};
 use ln::wire;
 use ln::wire::Encode;
-use onion_message::{SimpleArcOnionMessenger, SimpleRefOnionMessenger};
+use onion_message::{CustomOnionMessageContents, CustomOnionMessageHandler, SimpleArcOnionMessenger, SimpleRefOnionMessenger};
 use routing::gossip::{NetworkGraph, P2PGossipSync};
 use util::atomic_counter::AtomicCounter;
 use util::crypto::sign;
@@ -36,7 +36,7 @@ use prelude::*;
 use io;
 use alloc::collections::LinkedList;
 use sync::{Arc, Mutex, MutexGuard, FairRwLock};
-use core::sync::atomic::{AtomicBool, AtomicU64, Ordering};
+use core::sync::atomic::{AtomicBool, AtomicU32, Ordering};
 use core::{cmp, hash, fmt, mem};
 use core::ops::Deref;
 use core::convert::Infallible;
@@ -73,7 +73,7 @@ impl RoutingMessageHandler for IgnoringMessageHandler {
 	fn get_next_channel_announcement(&self, _starting_point: u64) ->
 		Option<(msgs::ChannelAnnouncement, Option<msgs::ChannelUpdate>, Option<msgs::ChannelUpdate>)> { None }
 	fn get_next_node_announcement(&self, _starting_point: Option<&PublicKey>) -> Option<msgs::NodeAnnouncement> { None }
-	fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init) {}
+	fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init) -> Result<(), ()> { Ok(()) }
 	fn handle_reply_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyChannelRange) -> Result<(), LightningError> { Ok(()) }
 	fn handle_reply_short_channel_ids_end(&self, _their_node_id: &PublicKey, _msg: msgs::ReplyShortChannelIdsEnd) -> Result<(), LightningError> { Ok(()) }
 	fn handle_query_channel_range(&self, _their_node_id: &PublicKey, _msg: msgs::QueryChannelRange) -> Result<(), LightningError> { Ok(()) }
@@ -88,13 +88,30 @@ impl OnionMessageProvider for IgnoringMessageHandler {
 }
 impl OnionMessageHandler for IgnoringMessageHandler {
 	fn handle_onion_message(&self, _their_node_id: &PublicKey, _msg: &msgs::OnionMessage) {}
-	fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init) {}
+	fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init) -> Result<(), ()> { Ok(()) }
 	fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
 	fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() }
 	fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures {
 		InitFeatures::empty()
 	}
 }
+impl CustomOnionMessageHandler for IgnoringMessageHandler {
+	type CustomMessage = Infallible;
+	fn handle_custom_message(&self, _msg: Self::CustomMessage) {
+		// Since we always return `None` in the read the handle method should never be called.
+		unreachable!();
+	}
+}
+impl MaybeReadableArgs<u64> for Infallible {
+	fn read<R: io::Read>(_buffer: &mut R, _msg_type: u64) -> Result<Option<Self>, msgs::DecodeError> where Self: Sized {
+		Ok(None)
+	}
+}
+
+impl CustomOnionMessageContents for Infallible {
+	fn tlv_type(&self) -> u64 { unreachable!(); }
+}
+
 impl Deref for IgnoringMessageHandler {
 	type Target = IgnoringMessageHandler;
 	fn deref(&self) -> &Self { self }
@@ -209,13 +226,26 @@ impl ChannelMessageHandler for ErroringMessageHandler {
 	// msgs::ChannelUpdate does not contain the channel_id field, so we just drop them.
 	fn handle_channel_update(&self, _their_node_id: &PublicKey, _msg: &msgs::ChannelUpdate) {}
 	fn peer_disconnected(&self, _their_node_id: &PublicKey, _no_connection_possible: bool) {}
-	fn peer_connected(&self, _their_node_id: &PublicKey, _msg: &msgs::Init) {}
+	fn peer_connected(&self, _their_node_id: &PublicKey, _init: &msgs::Init) -> Result<(), ()> { Ok(()) }
 	fn handle_error(&self, _their_node_id: &PublicKey, _msg: &msgs::ErrorMessage) {}
 	fn provided_node_features(&self) -> NodeFeatures { NodeFeatures::empty() }
 	fn provided_init_features(&self, _their_node_id: &PublicKey) -> InitFeatures {
-		// Use our known channel feature set as peers may otherwise not be willing to talk to us at
-		// all.
-		InitFeatures::known_channel_features()
+		// Set a number of features which various nodes may require to talk to us. It's totally
+		// reasonable to indicate we "support" all kinds of channel features...we just reject all
+		// channels.
+		let mut features = InitFeatures::empty();
+		features.set_data_loss_protect_optional();
+		features.set_upfront_shutdown_script_optional();
+		features.set_variable_length_onion_optional();
+		features.set_static_remote_key_optional();
+		features.set_payment_secret_optional();
+		features.set_basic_mpp_optional();
+		features.set_wumbo_optional();
+		features.set_shutdown_any_segwit_optional();
+		features.set_channel_type_optional();
+		features.set_scid_privacy_optional();
+		features.set_zero_conf_optional();
+		features
 	}
 }
 impl Deref for ErroringMessageHandler {
@@ -527,7 +557,7 @@ pub struct PeerManager<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: D
 
 	/// Used to track the last value sent in a node_announcement "timestamp" field. We ensure this
 	/// value increases strictly since we don't assume access to a time source.
-	last_node_announcement_serial: AtomicU64,
+	last_node_announcement_serial: AtomicU32,
 
 	our_node_secret: SecretKey,
 	ephemeral_key_midstate: Sha256Engine,
@@ -581,7 +611,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, OM: Deref, L: Deref> PeerManager<D
 	/// minute should suffice.
 	///
 	/// (C-not exported) as we can't export a PeerManager with a dummy route handler
-	pub fn new_channel_only(channel_message_handler: CM, onion_message_handler: OM, our_node_secret: SecretKey, current_time: u64, ephemeral_random_data: &[u8; 32], logger: L) -> Self {
+	pub fn new_channel_only(channel_message_handler: CM, onion_message_handler: OM, our_node_secret: SecretKey, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L) -> Self {
 		Self::new(MessageHandler {
 			chan_handler: channel_message_handler,
 			route_handler: IgnoringMessageHandler{},
@@ -607,7 +637,7 @@ impl<Descriptor: SocketDescriptor, RM: Deref, L: Deref> PeerManager<Descriptor,
 	/// cryptographically secure random bytes.
 	///
 	/// (C-not exported) as we can't export a PeerManager with a dummy channel handler
-	pub fn new_routing_only(routing_message_handler: RM, our_node_secret: SecretKey, current_time: u64, ephemeral_random_data: &[u8; 32], logger: L) -> Self {
+	pub fn new_routing_only(routing_message_handler: RM, our_node_secret: SecretKey, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L) -> Self {
 		Self::new(MessageHandler {
 			chan_handler: ErroringMessageHandler::new(),
 			route_handler: routing_message_handler,
@@ -671,7 +701,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 	/// incremented irregularly internally. In general it is best to simply use the current UNIX
 	/// timestamp, however if it is not available a persistent counter that increases once per
 	/// minute should suffice.
-	pub fn new(message_handler: MessageHandler<CM, RM, OM>, our_node_secret: SecretKey, current_time: u64, ephemeral_random_data: &[u8; 32], logger: L, custom_message_handler: CMH) -> Self {
+	pub fn new(message_handler: MessageHandler<CM, RM, OM>, our_node_secret: SecretKey, current_time: u32, ephemeral_random_data: &[u8; 32], logger: L, custom_message_handler: CMH) -> Self {
 		let mut ephemeral_key_midstate = Sha256::engine();
 		ephemeral_key_midstate.input(ephemeral_random_data);
 
@@ -688,7 +718,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			our_node_secret,
 			ephemeral_key_midstate,
 			peer_counter: AtomicCounter::new(),
-			last_node_announcement_serial: AtomicU64::new(current_time),
+			last_node_announcement_serial: AtomicU32::new(current_time),
 			logger,
 			custom_message_handler,
 			secp_ctx,
@@ -1213,14 +1243,18 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 				peer_lock.sync_status = InitSyncTracker::ChannelsSyncing(0);
 			}
 
-			if !msg.features.supports_static_remote_key() {
-				log_debug!(self.logger, "Peer {} does not support static remote key, disconnecting with no_connection_possible", log_pubkey!(their_node_id));
+			if let Err(()) = self.message_handler.route_handler.peer_connected(&their_node_id, &msg) {
+				log_debug!(self.logger, "Route Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
+				return Err(PeerHandleError{ no_connection_possible: true }.into());
+			}
+			if let Err(()) = self.message_handler.chan_handler.peer_connected(&their_node_id, &msg) {
+				log_debug!(self.logger, "Channel Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
+				return Err(PeerHandleError{ no_connection_possible: true }.into());
+			}
+			if let Err(()) = self.message_handler.onion_message_handler.peer_connected(&their_node_id, &msg) {
+				log_debug!(self.logger, "Onion Message Handler decided we couldn't communicate with peer {}", log_pubkey!(their_node_id));
 				return Err(PeerHandleError{ no_connection_possible: true }.into());
 			}
-
-			self.message_handler.route_handler.peer_connected(&their_node_id, &msg);
-			self.message_handler.chan_handler.peer_connected(&their_node_id, &msg);
-			self.message_handler.onion_message_handler.peer_connected(&their_node_id, &msg);
 
 			peer_lock.their_features = Some(msg.features);
 			return Ok(None);
@@ -1984,7 +2018,7 @@ impl<Descriptor: SocketDescriptor, CM: Deref, RM: Deref, OM: Deref, L: Deref, CM
 			.or(self.message_handler.onion_message_handler.provided_node_features());
 		let announcement = msgs::UnsignedNodeAnnouncement {
 			features,
-			timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel) as u32,
+			timestamp: self.last_node_announcement_serial.fetch_add(1, Ordering::AcqRel),
 			node_id: PublicKey::from_secret_key(&self.secp_ctx, &self.our_node_secret),
 			rgb, alias, addresses,
 			excess_address_data: Vec::new(),