use std::collections::{HashMap,LinkedList};
use std::sync::{Arc, Mutex};
-use std::cmp;
-use std::mem;
-use std::hash;
+use std::{cmp,mem,hash,fmt};
pub struct MessageHandler {
- pub chan_handler: Arc<msgs::ChannelMessageHandler>,
- pub route_handler: Arc<msgs::RoutingMessageHandler>,
+ pub chan_handler: Arc<msgs::ChannelMessageHandler>,
+ pub route_handler: Arc<msgs::RoutingMessageHandler>,
}
/// Provides an object which can be used to send data to and which uniquely identifies a connection
/// disconnect_event (unless it was provided in response to a new_*_connection event, in which case
/// no such disconnect_event must be generated and the socket be silently disconencted).
pub struct PeerHandleError {}
+impl fmt::Debug for PeerHandleError {
+ fn fmt(&self, formatter: &mut fmt::Formatter) -> Result<(), fmt::Error> {
+ formatter.write_str("Peer Send Invalid Data")
+ }
+}
struct Peer {
channel_encryptor: PeerChannelEncryptor,
/// course of this function!
/// Panics if the descriptor was not previously registered in a new_*_connection event.
pub fn read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
- let mut upstream_events = Vec::new();
+ match self.do_read_event(peer_descriptor, data) {
+ Ok(res) => Ok(res),
+ Err(e) => {
+ self.disconnect_event(peer_descriptor);
+ Err(e)
+ }
+ }
+ }
+
+ fn do_read_event(&self, peer_descriptor: &mut Descriptor, data: Vec<u8>) -> Result<bool, PeerHandleError> {
let pause_read = {
let mut peers = self.peers.lock().unwrap();
let (should_insert_node_id, pause_read) = match peers.peers.get_mut(peer_descriptor) {
let msg_len = try_potential_handleerror!(peer.channel_encryptor.decrypt_length_header(&peer.pending_read_buffer[..]));
peer.pending_read_buffer = Vec::with_capacity(msg_len as usize + 16);
peer.pending_read_buffer.resize(msg_len as usize + 16, 0);
- if msg_len < 2 + 16 { // Need at least the message type tag
+ if msg_len < 2 { // Need at least the message type tag
return Err(PeerHandleError{});
}
peer.pending_read_is_header = false;
38 => {
let msg = try_potential_decodeerror!(msgs::Shutdown::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_shutdown(&peer.their_node_id.unwrap(), &msg));
+ let resp_options = try_potential_handleerror!(self.message_handler.chan_handler.handle_shutdown(&peer.their_node_id.unwrap(), &msg));
+ if let Some(resp) = resp_options.0 {
+ encode_and_send_msg!(resp, 38);
+ }
+ if let Some(resp) = resp_options.1 {
+ encode_and_send_msg!(resp, 39);
+ }
},
39 => {
let msg = try_potential_decodeerror!(msgs::ClosingSigned::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_closing_signed(&peer.their_node_id.unwrap(), &msg));
+ let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_closing_signed(&peer.their_node_id.unwrap(), &msg));
+ if let Some(resp) = resp_option {
+ encode_and_send_msg!(resp, 39);
+ }
},
128 => {
},
130 => {
let msg = try_potential_decodeerror!(msgs::UpdateFulfillHTLC::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fulfill_htlc(&peer.their_node_id.unwrap(), &msg));
- match resp_option {
- Some(resps) => {
- for resp in resps.0 {
- encode_and_send_msg!(resp, 128);
- }
- encode_and_send_msg!(resps.1, 132);
- },
- None => {},
- }
+ try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fulfill_htlc(&peer.their_node_id.unwrap(), &msg));
},
131 => {
let msg = try_potential_decodeerror!(msgs::UpdateFailHTLC::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_htlc(&peer.their_node_id.unwrap(), &msg));
- match resp_option {
- Some(resps) => {
- for resp in resps.0 {
- encode_and_send_msg!(resp, 128);
- }
- encode_and_send_msg!(resps.1, 132);
- },
- None => {},
- }
+ try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_htlc(&peer.their_node_id.unwrap(), &msg));
},
135 => {
let msg = try_potential_decodeerror!(msgs::UpdateFailMalformedHTLC::decode(&msg_data[2..]));
- let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_malformed_htlc(&peer.their_node_id.unwrap(), &msg));
- match resp_option {
- Some(resps) => {
- for resp in resps.0 {
- encode_and_send_msg!(resp, 128);
- }
- encode_and_send_msg!(resps.1, 132);
- },
- None => {},
- }
+ try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fail_malformed_htlc(&peer.their_node_id.unwrap(), &msg));
},
132 => {
},
133 => {
let msg = try_potential_decodeerror!(msgs::RevokeAndACK::decode(&msg_data[2..]));
- try_potential_handleerror!(self.message_handler.chan_handler.handle_revoke_and_ack(&peer.their_node_id.unwrap(), &msg));
+ let resp_option = try_potential_handleerror!(self.message_handler.chan_handler.handle_revoke_and_ack(&peer.their_node_id.unwrap(), &msg));
+ match resp_option {
+ Some(resps) => {
+ for resp in resps.0 {
+ encode_and_send_msg!(resp, 128);
+ }
+ encode_and_send_msg!(resps.1, 132);
+ },
+ None => {},
+ }
},
-
134 => {
let msg = try_potential_decodeerror!(msgs::UpdateFee::decode(&msg_data[2..]));
try_potential_handleerror!(self.message_handler.chan_handler.handle_update_fee(&peer.their_node_id.unwrap(), &msg));
None => {}
};
+ pause_read
+ };
+
+ self.process_events();
+
+ Ok(pause_read)
+ }
+
+ /// Checks for any events generated by our handlers and processes them. May be needed after eg
+ /// calls to ChannelManager::process_pending_htlc_forward.
+ pub fn process_events(&self) {
+ let mut upstream_events = Vec::new();
+ {
// TODO: There are some DoS attacks here where you can flood someone's outbound send
// buffer by doing things like announcing channels on another node. We should be willing to
// drop optional-ish messages when send buffers get full!
let mut events_generated = self.message_handler.chan_handler.get_and_clear_pending_events();
+ let mut peers = self.peers.lock().unwrap();
for event in events_generated.drain(..) {
macro_rules! get_peer_for_forwarding {
($node_id: expr, $handle_no_such_peer: block) => {
Event::FundingGenerationReady {..} => { /* Hand upstream */ },
Event::FundingBroadcastSafe {..} => { /* Hand upstream */ },
Event::PaymentReceived {..} => { /* Hand upstream */ },
+ Event::PaymentSent {..} => { /* Hand upstream */ },
+ Event::PaymentFailed {..} => { /* Hand upstream */ },
Event::PendingHTLCsForwardable {..} => {
//TODO: Handle upstream in some confused form so that upstream just knows
Self::do_attempt_write_data(&mut descriptor, peer);
continue;
},
+ Event::SendFailHTLC { ref node_id, ref msg } => {
+ let (mut descriptor, peer) = get_peer_for_forwarding!(node_id, {
+ //TODO: Do whatever we're gonna do for handling dropped messages
+ });
+ peer.pending_outbound_buffer.push_back(peer.channel_encryptor.encrypt_message(&encode_msg!(msg, 131)));
+ Self::do_attempt_write_data(&mut descriptor, peer);
+ continue;
+ },
Event::BroadcastChannelAnnouncement { ref msg, ref update_msg } => {
let encoded_msg = encode_msg!(msg, 256);
let encoded_update_msg = encode_msg!(update_msg, 258);
upstream_events.push(event);
}
-
- pause_read
- };
+ }
let mut pending_events = self.pending_events.lock().unwrap();
for event in upstream_events.drain(..) {
pending_events.push(event);
}
-
- Ok(pause_read)
}
/// Indicates that the given socket descriptor's connection is now closed.
projects / rust-lightning / blobdiff