use peer::Peer;
use datastore::{AddressState, Store, U64Setting, RegexSetting};
use timeout_stream::TimeoutStream;
+use rand::Rng;
use tokio::prelude::*;
use tokio::timer::Delay;
fail_reason: AddressState,
recvd_version: bool,
recvd_verack: bool,
+ recvd_pong: bool,
recvd_addrs: bool,
recvd_block: bool,
+ pong_nonce: u64,
}
pub fn scan_node(scan_time: Instant, node: SocketAddr, manual: bool) {
let printer = unsafe { PRINTER.as_ref().unwrap() };
let store = unsafe { DATA_STORE.as_ref().unwrap() };
+ let mut rng = rand::thread_rng();
let peer_state = Arc::new(Mutex::new(PeerState {
recvd_version: false,
recvd_verack: false,
+ recvd_pong: false,
recvd_addrs: false,
recvd_block: false,
+ pong_nonce: rng.gen(),
node_services: 0,
fail_reason: AddressState::Timeout,
msg: (String::new(), false),
request: Arc::clone(&unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap()),
}));
+ let err_peer_state = Arc::clone(&peer_state);
let final_peer_state = Arc::clone(&peer_state);
let peer = Delay::new(scan_time).then(move |_| {
Peer::new(node.clone(), Duration::from_secs(timeout), printer)
});
tokio::spawn(peer.and_then(move |(mut write, read)| {
- TimeoutStream::new_timeout(read, scan_time + Duration::from_secs(store.get_u64(U64Setting::RunTimeout))).map_err(|_| { () }).for_each(move |msg| {
+ TimeoutStream::new_timeout(read, scan_time + Duration::from_secs(store.get_u64(U64Setting::RunTimeout))).map_err(move |err| {
+ match err {
+ bitcoin::consensus::encode::Error::UnrecognizedNetworkCommand(ref msg) => {
+ // If we got here, we hit one of the explicitly disallowed messages indicating
+ // a bogus "node".
+ let mut state_lock = err_peer_state.lock().unwrap();
+ state_lock.msg = (format!("(bad msg type {})", msg), true);
+ state_lock.fail_reason = AddressState::EvilNode;
+ },
+ _ => {},
+ }
+ ()
+ }).for_each(move |msg| {
let mut state_lock = peer_state.lock().unwrap();
macro_rules! check_set_flag {
($recvd_flag: ident, $msg: expr) => { {
},
NetworkMessage::Verack => {
check_set_flag!(recvd_verack, "verack");
- if let Err(_) = write.try_send(NetworkMessage::GetAddr) {
+ if let Err(_) = write.try_send(NetworkMessage::Ping(state_lock.pong_nonce)) {
return future::err(());
}
},
return future::err(())
}
},
+ NetworkMessage::Pong(v) => {
+ if v != state_lock.pong_nonce {
+ state_lock.fail_reason = AddressState::ProtocolViolation;
+ state_lock.msg = ("due to invalid pong nonce".to_string(), true);
+ return future::err(());
+ }
+ check_set_flag!(recvd_pong, "pong");
+ if let Err(_) = write.try_send(NetworkMessage::GetAddr) {
+ return future::err(());
+ }
+ },
NetworkMessage::Addr(addrs) => {
if addrs.len() > 1000 {
state_lock.fail_reason = AddressState::ProtocolViolation;
check_set_flag!(recvd_block, "block");
return future::err(());
},
+ NetworkMessage::Inv(invs) => {
+ for inv in invs {
+ if inv.inv_type == InvType::Transaction {
+ state_lock.fail_reason = AddressState::EvilNode;
+ state_lock.msg = ("due to unrequested inv tx".to_string(), true);
+ return future::err(());
+ }
+ }
+ },
+ NetworkMessage::Tx(_) => {
+ state_lock.fail_reason = AddressState::EvilNode;
+ state_lock.msg = ("due to unrequested transaction".to_string(), true);
+ return future::err(());
+ },
_ => {},
}
future::ok(())
printer.set_stat(Stat::ConnectionClosed);
let mut state_lock = final_peer_state.lock().unwrap();
- if state_lock.recvd_version && state_lock.recvd_verack &&
+ if state_lock.recvd_version && state_lock.recvd_verack && state_lock.recvd_pong &&
state_lock.recvd_addrs && state_lock.recvd_block {
let old_state = store.set_node_state(node, AddressState::Good, state_lock.node_services);
if manual || (old_state != AddressState::Good && state_lock.msg.0 != "") {
} else {
assert!(state_lock.fail_reason != AddressState::Good);
if state_lock.fail_reason == AddressState::TimeoutDuringRequest && state_lock.recvd_version && state_lock.recvd_verack {
- if !state_lock.recvd_addrs {
+ if !state_lock.recvd_pong {
+ state_lock.fail_reason = AddressState::TimeoutAwaitingPong;
+ } else if !state_lock.recvd_addrs {
state_lock.fail_reason = AddressState::TimeoutAwaitingAddr;
} else if !state_lock.recvd_block {
state_lock.fail_reason = AddressState::TimeoutAwaitingBlock;