mod printer;
+mod reader;
mod peer;
mod timeout_stream;
mod datastore;
-use std::env;
+use std::{cmp, env};
use std::collections::HashMap;
use std::sync::{Arc, Mutex};
+use std::sync::atomic::{Ordering, AtomicBool};
use std::time::{Duration, Instant};
-use std::net::SocketAddr;
+use std::net::{SocketAddr, ToSocketAddrs};
use bitcoin_hashes::sha256d;
+use bitcoin::blockdata::block::Block;
use bitcoin::blockdata::constants::genesis_block;
use bitcoin::network::constants::Network;
use bitcoin::network::message::NetworkMessage;
use printer::{Printer, Stat};
use peer::Peer;
-use datastore::{AddressState, Store, U64Setting};
+use datastore::{AddressState, Store, U64Setting, RegexSetting};
+use timeout_stream::TimeoutStream;
+use rand::Rng;
use tokio::prelude::*;
use tokio::timer::Delay;
+static mut REQUEST_BLOCK: Option<Box<Mutex<Arc<(u64, sha256d::Hash, Block)>>>> = None;
static mut HIGHEST_HEADER: Option<Box<Mutex<(sha256d::Hash, u64)>>> = None;
static mut HEADER_MAP: Option<Box<Mutex<HashMap<sha256d::Hash, u64>>>> = None;
static mut HEIGHT_MAP: Option<Box<Mutex<HashMap<u64, sha256d::Hash>>>> = None;
static mut DATA_STORE: Option<Box<Store>> = None;
static mut PRINTER: Option<Box<Printer>> = None;
+pub static START_SHUTDOWN: AtomicBool = AtomicBool::new(false);
+static SCANNING: AtomicBool = AtomicBool::new(false);
struct PeerState {
+ request: Arc<(u64, sha256d::Hash, Block)>,
+ node_services: u64,
+ msg: (String, bool),
+ fail_reason: AddressState,
recvd_version: bool,
recvd_verack: bool,
+ recvd_pong: bool,
recvd_addrs: bool,
recvd_block: bool,
- node_services: u64,
- fail_reason: AddressState,
- request: (u64, sha256d::Hash),
+ pong_nonce: u64,
}
-fn scan_node(scan_time: Instant, node: SocketAddr) {
+pub fn scan_node(scan_time: Instant, node: SocketAddr, manual: bool) {
+ if START_SHUTDOWN.load(Ordering::Relaxed) { return; }
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,
- request: (0, Default::default()),
+ msg: (String::new(), false),
+ request: Arc::clone(&unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap()),
}));
let final_peer_state = Arc::clone(&peer_state);
let peer = Delay::new(scan_time).then(move |_| {
printer.set_stat(Stat::NewConnection);
let timeout = store.get_u64(U64Setting::RunTimeout);
- Peer::new(node.clone(), Duration::from_secs(timeout), printer) //TODO: timeout for total run
+ Peer::new(node.clone(), Duration::from_secs(timeout), printer)
});
- tokio::spawn(peer.and_then(move |conn_split| {
- let requested_height = unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().1 - 1008;
- let requested_block = unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap().get(&requested_height).unwrap().clone();
- peer_state.lock().unwrap().request = (requested_height, requested_block);
-
- let (mut write, read) = conn_split;
- read.map_err(|_| { () }).for_each(move |msg| {
+ 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| {
let mut state_lock = peer_state.lock().unwrap();
macro_rules! check_set_flag {
($recvd_flag: ident, $msg: expr) => { {
if state_lock.$recvd_flag {
state_lock.fail_reason = AddressState::ProtocolViolation;
- printer.add_line(format!("Updating {} to ProtocolViolation due to dup {}", node, $msg), true);
+ state_lock.msg = (format!("due to dup {}", $msg), true);
state_lock.$recvd_flag = false;
return future::err(());
}
state_lock.fail_reason = AddressState::HighBlockCount;
return future::err(());
}
+ let safe_ua = ver.user_agent.replace(|c: char| !c.is_ascii() || c < ' ' || c > '~', "");
if (ver.start_height as u64) < state_lock.request.0 {
- printer.add_line(format!("Updating {} to LowBlockCount ({} < {})", node, ver.start_height, state_lock.request.0), true);
+ state_lock.msg = (format!("({} < {})", ver.start_height, state_lock.request.0), true);
state_lock.fail_reason = AddressState::LowBlockCount;
return future::err(());
}
let min_version = store.get_u64(U64Setting::MinProtocolVersion);
if (ver.version as u64) < min_version {
- printer.add_line(format!("Updating {} to LowVersion ({} < {})", node, ver.version, min_version), true);
+ state_lock.msg = (format!("({} < {})", ver.version, min_version), true);
state_lock.fail_reason = AddressState::LowVersion;
return future::err(());
}
- if ver.services & 1 != 1 {
- printer.add_line(format!("Updating {} to NotFullNode (services {:x})", node, ver.services), true);
+ if ver.services & (1 | (1 << 10)) == 0 {
+ state_lock.msg = (format!("({}: services {:x})", safe_ua, ver.services), true);
state_lock.fail_reason = AddressState::NotFullNode;
return future::err(());
}
+ if !store.get_regex(RegexSetting::SubverRegex).is_match(&ver.user_agent) {
+ state_lock.msg = (format!("subver {}", safe_ua), true);
+ state_lock.fail_reason = AddressState::BadVersion;
+ return future::err(());
+ }
check_set_flag!(recvd_version, "version");
state_lock.node_services = ver.services;
+ state_lock.msg = (format!("(subver: {})", safe_ua), false);
if let Err(_) = write.try_send(NetworkMessage::Verack) {
return future::err(());
}
},
NetworkMessage::Verack => {
check_set_flag!(recvd_verack, "verack");
- if let Err(_) = write.try_send(NetworkMessage::GetAddr) {
- return future::err(());
- }
- if let Err(_) = write.try_send(NetworkMessage::GetData(vec![Inventory {
- inv_type: InvType::WitnessBlock,
- hash: state_lock.request.1,
- }])) {
+ 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() > 1 {
- check_set_flag!(recvd_addrs, "addr");
- unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
+ if addrs.len() > 1000 {
+ state_lock.fail_reason = AddressState::ProtocolViolation;
+ state_lock.msg = (format!("due to oversized addr: {}", addrs.len()), true);
+ state_lock.recvd_addrs = false;
+ return future::err(());
+ }
+ if addrs.len() > 10 {
+ if !state_lock.recvd_addrs {
+ if let Err(_) = write.try_send(NetworkMessage::GetData(vec![Inventory {
+ inv_type: InvType::WitnessBlock,
+ hash: state_lock.request.1,
+ }])) {
+ return future::err(());
+ }
+ }
+ state_lock.recvd_addrs = true;
}
+ unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
},
NetworkMessage::Block(block) => {
- if block.header.bitcoin_hash() != state_lock.request.1 ||
- !block.check_merkle_root() || !block.check_witness_commitment() {
+ if block != state_lock.request.2 {
state_lock.fail_reason = AddressState::ProtocolViolation;
- printer.add_line(format!("Updating {} to ProtocolViolation due to bad block", node), true);
+ state_lock.msg = ("due to bad block".to_string(), true);
return future::err(());
}
check_set_flag!(recvd_block, "block");
+ return future::err(());
+ },
+ NetworkMessage::Tx(_) => {
+ state_lock.fail_reason = AddressState::ProtocolViolation;
+ state_lock.msg = ("due to unrequested transaction".to_string(), true);
+ return future::err(());
},
_ => {},
}
let store = unsafe { DATA_STORE.as_ref().unwrap() };
printer.set_stat(Stat::ConnectionClosed);
- let state_lock = final_peer_state.lock().unwrap();
- if state_lock.recvd_version && state_lock.recvd_verack &&
+ let mut state_lock = final_peer_state.lock().unwrap();
+ if state_lock.recvd_version && state_lock.recvd_verack && state_lock.recvd_pong &&
state_lock.recvd_addrs && state_lock.recvd_block {
- store.set_node_state(node, AddressState::Good, state_lock.node_services);
+ let old_state = store.set_node_state(node, AddressState::Good, state_lock.node_services);
+ if manual || (old_state != AddressState::Good && state_lock.msg.0 != "") {
+ printer.add_line(format!("Updating {} from {} to Good {}", node, old_state.to_str(), &state_lock.msg.0), state_lock.msg.1);
+ }
} else {
assert!(state_lock.fail_reason != AddressState::Good);
- store.set_node_state(node, state_lock.fail_reason, 0);
+ if state_lock.fail_reason == AddressState::TimeoutDuringRequest && state_lock.recvd_version && state_lock.recvd_verack {
+ 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;
+ }
+ }
+ let old_state = store.set_node_state(node, state_lock.fail_reason, 0);
+ if (manual || old_state != state_lock.fail_reason) && state_lock.fail_reason == AddressState::TimeoutDuringRequest {
+ printer.add_line(format!("Updating {} from {} to Timeout During Request (ver: {}, vack: {})",
+ node, old_state.to_str(), state_lock.recvd_version, state_lock.recvd_verack), true);
+ } else if manual || (old_state != state_lock.fail_reason && state_lock.msg.0 != "" && state_lock.msg.1) {
+ printer.add_line(format!("Updating {} from {} to {} {}", node, old_state.to_str(), state_lock.fail_reason.to_str(), &state_lock.msg.0), state_lock.msg.1);
+ }
}
future::ok(())
}));
}
+fn poll_dnsseeds() {
+ tokio::spawn(future::lazy(|| {
+ let printer = unsafe { PRINTER.as_ref().unwrap() };
+ let store = unsafe { DATA_STORE.as_ref().unwrap() };
+
+ let mut new_addrs = 0;
+ for seed in ["seed.bitcoin.sipa.be", "dnsseed.bitcoin.dashjr.org", "seed.bitcoinstats.com", "seed.bitcoin.jonasschnelli.ch", "seed.btc.petertodd.org", "seed.bitcoin.sprovoost.nl", "dnsseed.emzy.de"].iter() {
+ new_addrs += store.add_fresh_addrs((*seed, 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
+ new_addrs += store.add_fresh_addrs((("x9.".to_string() + seed).as_str(), 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
+ }
+ printer.add_line(format!("Added {} new addresses from other DNS seeds", new_addrs), false);
+ Delay::new(Instant::now() + Duration::from_secs(60)).then(|_| {
+ let store = unsafe { DATA_STORE.as_ref().unwrap() };
+ store.save_data().then(|_| {
+ if !START_SHUTDOWN.load(Ordering::Relaxed) {
+ poll_dnsseeds();
+ }
+ future::ok(())
+ })
+ })
+ }));
+}
+
fn scan_net() {
tokio::spawn(future::lazy(|| {
+ let printer = unsafe { PRINTER.as_ref().unwrap() };
let store = unsafe { DATA_STORE.as_ref().unwrap() };
+
let mut scan_nodes = store.get_next_scan_nodes();
+ printer.add_line(format!("Got {} addresses to scan", scan_nodes.len()), false);
let per_iter_time = Duration::from_millis(1000 / store.get_u64(U64Setting::ConnsPerSec));
- let mut iter_time = Instant::now();
+ let start_time = Instant::now();
+ let mut iter_time = start_time;
for node in scan_nodes.drain(..) {
- scan_node(iter_time, node);
+ scan_node(iter_time, node, false);
iter_time += per_iter_time;
}
- Delay::new(iter_time).then(|_| {
- let store = unsafe { DATA_STORE.as_ref().unwrap() };
- store.save_data().then(|_| {
+ Delay::new(cmp::max(iter_time, start_time + Duration::from_secs(1))).then(|_| {
+ if !START_SHUTDOWN.load(Ordering::Relaxed) {
scan_net();
- future::ok(())
- })
+ }
+ future::ok(())
})
}));
}
fn make_trusted_conn(trusted_sockaddr: SocketAddr) {
let printer = unsafe { PRINTER.as_ref().unwrap() };
let trusted_peer = Peer::new(trusted_sockaddr.clone(), Duration::from_secs(600), printer);
- tokio::spawn(trusted_peer.and_then(move |trusted_split| {
+ tokio::spawn(trusted_peer.and_then(move |(mut trusted_write, trusted_read)| {
printer.add_line("Connected to local peer".to_string(), false);
- let (mut trusted_write, trusted_read) = trusted_split;
let mut starting_height = 0;
- trusted_read.map_err(|_| { () }).for_each(move |msg| {
+ TimeoutStream::new_persistent(trusted_read, Duration::from_secs(600)).map_err(|_| { () }).for_each(move |msg| {
+ if START_SHUTDOWN.load(Ordering::Relaxed) {
+ return future::err(());
+ }
match msg {
NetworkMessage::Version(ver) => {
if let Err(_) = trusted_write.try_send(NetworkMessage::Verack) {
starting_height = ver.start_height;
},
NetworkMessage::Verack => {
+ if let Err(_) = trusted_write.try_send(NetworkMessage::SendHeaders) {
+ return future::err(());
+ }
if let Err(_) = trusted_write.try_send(NetworkMessage::GetHeaders(GetHeadersMessage {
version: 70015,
locator_hashes: vec![unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().0.clone()],
}
let mut header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
let mut height_map = unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap();
+
if let Some(height) = header_map.get(&headers[0].prev_blockhash).cloned() {
for i in 0..headers.len() {
let hash = headers[i].bitcoin_hash();
header_map.insert(headers[i].bitcoin_hash(), height + 1 + (i as u64));
height_map.insert(height + 1 + (i as u64), headers[i].bitcoin_hash());
}
+
let top_height = height + headers.len() as u64;
*unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap()
= (headers.last().unwrap().bitcoin_hash(), top_height);
printer.set_stat(printer::Stat::HeaderCount(top_height));
+
if top_height >= starting_height as u64 {
- scan_net();
+ if let Err(_) = trusted_write.try_send(NetworkMessage::GetData(vec![Inventory {
+ inv_type: InvType::WitnessBlock,
+ hash: height_map.get(&(top_height - 216)).unwrap().clone(),
+ }])) {
+ return future::err(());
+ }
}
} else {
// Wat? Lets start again...
return future::err(())
}
},
+ NetworkMessage::Block(block) => {
+ let hash = block.header.bitcoin_hash();
+ let header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
+ let height = *header_map.get(&hash).expect("Got loose block from trusted peer we coulnd't have requested");
+ if height == unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().1 - 216 {
+ *unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap() = Arc::new((height, hash, block));
+ if !SCANNING.swap(true, Ordering::SeqCst) {
+ scan_net();
+ poll_dnsseeds();
+ }
+ }
+ },
NetworkMessage::Ping(v) => {
if let Err(_) = trusted_write.try_send(NetworkMessage::Pong(v)) {
return future::err(())
future::err(())
})
}).then(move |_: Result<(), ()>| {
- printer.add_line("Lost connection from trusted peer".to_string(), true);
- make_trusted_conn(trusted_sockaddr);
+ if !START_SHUTDOWN.load(Ordering::Relaxed) {
+ printer.add_line("Lost connection from trusted peer".to_string(), true);
+ make_trusted_conn(trusted_sockaddr);
+ }
future::ok(())
}));
}
return;
}
- unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::new()))) };
- unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::new()))) };
+ unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
+ unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap().insert(genesis_block(Network::Bitcoin).bitcoin_hash(), 0);
unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap().insert(0, genesis_block(Network::Bitcoin).bitcoin_hash());
unsafe { HIGHEST_HEADER = Some(Box::new(Mutex::new((genesis_block(Network::Bitcoin).bitcoin_hash(), 0)))) };
+ unsafe { REQUEST_BLOCK = Some(Box::new(Mutex::new(Arc::new((0, genesis_block(Network::Bitcoin).bitcoin_hash(), genesis_block(Network::Bitcoin)))))) };
- tokio::run(future::lazy(|| {
+ let trt = tokio::runtime::Builder::new()
+ .blocking_threads(2).core_threads(num_cpus::get().max(1) * 3)
+ .build().unwrap();
+
+ let _ = trt.block_on_all(future::lazy(|| {
let mut args = env::args();
args.next();
let path = args.next().unwrap();
Store::new(path).and_then(move |store| {
unsafe { DATA_STORE = Some(Box::new(store)) };
- unsafe { PRINTER = Some(Box::new(Printer::new(DATA_STORE.as_ref().unwrap()))) };
+ let store = unsafe { DATA_STORE.as_ref().unwrap() };
+ unsafe { PRINTER = Some(Box::new(Printer::new(store))) };
let trusted_sockaddr: SocketAddr = addr.parse().unwrap();
make_trusted_conn(trusted_sockaddr);
+ reader::read(store, unsafe { PRINTER.as_ref().unwrap() });
+
future::ok(())
}).or_else(|_| {
future::err(())
})
}));
+
+ tokio::run(future::lazy(|| {
+ unsafe { DATA_STORE.as_ref().unwrap() }.save_data()
+ }));
}
projects / dnsseed-rust / blobdiff