2 use std::collections::{HashSet, HashMap, hash_map};
3 use std::sync::{Arc, RwLock};
4 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, SocketAddr, SocketAddrV4, SocketAddrV6};
5 use std::time::{Duration, Instant};
6 use std::io::{BufRead, BufReader};
8 use bitcoin::network::address::Address;
11 use rand::seq::{SliceRandom, IteratorRandom};
13 use tokio::prelude::*;
15 use tokio::io::write_all;
19 use crate::bgp_client::BGPClient;
21 pub const SECS_PER_SCAN_RESULTS: u64 = 15;
23 #[derive(Clone, Copy, Hash, PartialEq, Eq)]
24 pub enum AddressState {
43 pub fn from_num(num: u8) -> Option<AddressState> {
45 0x0 => Some(AddressState::Untested),
46 0x1 => Some(AddressState::LowBlockCount),
47 0x2 => Some(AddressState::HighBlockCount),
48 0x3 => Some(AddressState::LowVersion),
49 0x4 => Some(AddressState::BadVersion),
50 0x5 => Some(AddressState::NotFullNode),
51 0x6 => Some(AddressState::ProtocolViolation),
52 0x7 => Some(AddressState::Timeout),
53 0x8 => Some(AddressState::TimeoutDuringRequest),
54 0x9 => Some(AddressState::TimeoutAwaitingPong),
55 0xa => Some(AddressState::TimeoutAwaitingAddr),
56 0xb => Some(AddressState::TimeoutAwaitingBlock),
57 0xc => Some(AddressState::Good),
58 0xd => Some(AddressState::WasGood),
59 0xe => Some(AddressState::EvilNode),
64 pub fn to_num(&self) -> u8 {
66 AddressState::Untested => 0,
67 AddressState::LowBlockCount => 1,
68 AddressState::HighBlockCount => 2,
69 AddressState::LowVersion => 3,
70 AddressState::BadVersion => 4,
71 AddressState::NotFullNode => 5,
72 AddressState::ProtocolViolation => 6,
73 AddressState::Timeout => 7,
74 AddressState::TimeoutDuringRequest => 8,
75 AddressState::TimeoutAwaitingPong => 9,
76 AddressState::TimeoutAwaitingAddr => 10,
77 AddressState::TimeoutAwaitingBlock => 11,
78 AddressState::Good => 12,
79 AddressState::WasGood => 13,
80 AddressState::EvilNode => 14,
84 pub fn to_str(&self) -> &'static str {
86 AddressState::Untested => "Untested",
87 AddressState::LowBlockCount => "Low Block Count",
88 AddressState::HighBlockCount => "High Block Count",
89 AddressState::LowVersion => "Low Version",
90 AddressState::BadVersion => "Bad Version",
91 AddressState::NotFullNode => "Not Full Node",
92 AddressState::ProtocolViolation => "Protocol Violation",
93 AddressState::Timeout => "Timeout",
94 AddressState::TimeoutDuringRequest => "Timeout During Request",
95 AddressState::TimeoutAwaitingPong => "Timeout Awaiting Pong",
96 AddressState::TimeoutAwaitingAddr => "Timeout Awaiting Addr",
97 AddressState::TimeoutAwaitingBlock => "Timeout Awaiting Block",
98 AddressState::Good => "Good",
99 AddressState::WasGood => "Was Good",
100 AddressState::EvilNode => "Evil Node",
104 pub const fn get_count() -> u8 {
109 #[derive(Hash, PartialEq, Eq)]
110 pub enum U64Setting {
113 RescanInterval(AddressState),
117 #[derive(Hash, PartialEq, Eq)]
118 pub enum RegexSetting {
123 last_update: Instant,
124 last_good: Instant, // Ignored unless state is Good or WasGood
129 /// Essentially SocketAddr but without a traffic class or scope
130 #[derive(Clone, PartialEq, Eq, Hash)]
135 impl From<SocketAddr> for SockAddr {
136 fn from(addr: SocketAddr) -> SockAddr {
138 SocketAddr::V4(sa) => SockAddr::V4(sa),
139 SocketAddr::V6(sa) => SockAddr::V6((sa.ip().clone(), sa.port())),
143 impl Into<SocketAddr> for &SockAddr {
144 fn into(self) -> SocketAddr {
146 &SockAddr::V4(sa) => SocketAddr::V4(sa),
147 &SockAddr::V6(sa) => SocketAddr::V6(SocketAddrV6::new(sa.0, sa.1, 0, 0))
151 impl ToString for SockAddr {
152 fn to_string(&self) -> String {
153 let sa: SocketAddr = self.into();
158 pub fn port(&self) -> u16 {
160 SockAddr::V4(sa) => sa.port(),
161 SockAddr::V6((_, port)) => port,
164 pub fn ip(&self) -> IpAddr {
166 SockAddr::V4(sa) => IpAddr::V4(sa.ip().clone()),
167 SockAddr::V6((ip, _)) => IpAddr::V6(ip),
173 good_node_services: [HashSet<SockAddr>; 64],
174 nodes_to_state: HashMap<SockAddr, Node>,
175 state_next_scan: Vec<Vec<(Instant, SockAddr)>>,
177 struct NodesMutRef<'a> {
178 good_node_services: &'a mut [HashSet<SockAddr>; 64],
179 nodes_to_state: &'a mut HashMap<SockAddr, Node>,
180 state_next_scan: &'a mut Vec<Vec<(Instant, SockAddr)>>,
184 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
186 good_node_services: &mut self.good_node_services,
187 nodes_to_state: &mut self.nodes_to_state,
188 state_next_scan: &mut self.state_next_scan,
194 u64_settings: RwLock<HashMap<U64Setting, u64>>,
195 subver_regex: RwLock<Arc<Regex>>,
196 nodes: RwLock<Nodes>,
201 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
202 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
203 let mut l = BufReader::new(f).lines();
204 macro_rules! try_read {
205 ($lines: expr, $ty: ty) => { {
206 match $lines.next() {
207 Some(line) => match line {
208 Ok(line) => match line.parse::<$ty>() {
210 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
212 Err(e) => return future::err(e),
214 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
218 let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
219 u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
220 u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
221 u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
222 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), try_read!(l, u64));
223 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), try_read!(l, u64));
224 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), try_read!(l, u64));
225 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), try_read!(l, u64));
226 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), try_read!(l, u64));
227 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), try_read!(l, u64));
228 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
229 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
230 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
231 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), try_read!(l, u64));
232 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), try_read!(l, u64));
233 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), try_read!(l, u64));
234 u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
235 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
236 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), try_read!(l, u64));
237 future::ok((u64s, try_read!(l, Regex)))
238 }).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
239 let mut u64s = HashMap::with_capacity(15);
240 u64s.insert(U64Setting::RunTimeout, 120);
241 u64s.insert(U64Setting::WasGoodTimeout, 21600);
242 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 1);
243 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
244 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
245 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
246 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
247 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
248 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
249 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
250 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
251 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), 3600);
252 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
253 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
254 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
255 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
256 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), 315360000);
257 u64s.insert(U64Setting::MinProtocolVersion, 70002);
258 future::ok((u64s, Regex::new(".*").unwrap()))
261 macro_rules! nodes_uninitd {
263 let mut state_vecs = Vec::with_capacity(AddressState::get_count() as usize);
264 for _ in 0..AddressState::get_count() {
265 state_vecs.push(Vec::new());
267 let good_node_services = [HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new(), HashSet::new()];
270 nodes_to_state: HashMap::new(),
271 state_next_scan: state_vecs,
276 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
277 let start_time = Instant::now() - Duration::from_secs(60 * 60 * 24);
278 let mut res = nodes_uninitd!();
279 let l = BufReader::new(f).lines();
281 let line = match line_res {
283 Err(_) => return future::ok(res),
285 let mut line_iter = line.split(',');
286 macro_rules! try_read {
287 ($lines: expr, $ty: ty) => { {
288 match $lines.next() {
289 Some(line) => match line.parse::<$ty>() {
291 Err(_) => return future::ok(res),
293 None => return future::ok(res),
297 let sockaddr = try_read!(line_iter, SocketAddr);
298 let state = try_read!(line_iter, u8);
299 let last_services = try_read!(line_iter, u64);
301 state: match AddressState::from_num(state) {
303 None => return future::ok(res),
306 last_update: Instant::now(),
307 last_good: Instant::now(),
309 if node.state == AddressState::Good {
311 if node.last_services & (1 << i) != 0 {
312 res.good_node_services[i].insert(sockaddr.into());
316 res.state_next_scan[node.state.to_num() as usize].push((start_time, sockaddr.into()));
317 res.nodes_to_state.insert(sockaddr.into(), node);
320 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
321 future::ok(nodes_uninitd!())
323 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
325 u64_settings: RwLock::new(u64_settings),
326 subver_regex: RwLock::new(Arc::new(regex)),
327 nodes: RwLock::new(nodes),
333 pub fn get_u64(&self, setting: U64Setting) -> u64 {
334 *self.u64_settings.read().unwrap().get(&setting).unwrap()
337 pub fn set_u64(&self, setting: U64Setting, value: u64) {
338 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
341 pub fn get_node_count(&self, state: AddressState) -> usize {
342 self.nodes.read().unwrap().state_next_scan[state.to_num() as usize].len()
345 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
346 Arc::clone(&*self.subver_regex.read().unwrap())
349 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
350 *self.subver_regex.write().unwrap() = Arc::new(value);
353 pub fn add_fresh_addrs<I: Iterator<Item=SocketAddr>>(&self, addresses: I) -> u64 {
355 let mut nodes = self.nodes.write().unwrap();
356 let cur_time = Instant::now();
357 for addr in addresses {
358 match nodes.nodes_to_state.entry(addr.into()) {
359 hash_map::Entry::Vacant(e) => {
361 state: AddressState::Untested,
363 last_update: cur_time,
366 nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr.into()));
369 hash_map::Entry::Occupied(_) => {},
375 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
376 self.add_fresh_addrs(addresses.iter().filter_map(|(_, addr)| {
377 match addr.socket_addr() {
378 Ok(socketaddr) => Some(socketaddr),
379 Err(_) => None, // TODO: Handle onions
384 pub fn set_node_state(&self, sockaddr: SocketAddr, state: AddressState, services: u64) -> AddressState {
385 let addr: SockAddr = sockaddr.into();
386 let now = Instant::now();
388 let mut nodes_lock = self.nodes.write().unwrap();
389 let nodes = nodes_lock.borrow_mut();
391 let state_ref = nodes.nodes_to_state.entry(addr.clone()).or_insert(Node {
392 state: AddressState::Untested,
397 let ret = state_ref.state;
398 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
399 && state != AddressState::Good
400 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
401 state_ref.state = AddressState::WasGood;
403 if state_ref.last_services & (1 << i) != 0 {
404 nodes.good_node_services[i].remove(&addr);
407 state_ref.last_services = 0;
408 nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
410 state_ref.state = state;
411 if state == AddressState::Good {
413 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
414 nodes.good_node_services[i].insert(addr.clone());
415 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
416 nodes.good_node_services[i].remove(&addr);
419 state_ref.last_services = services;
420 state_ref.last_good = now;
422 nodes.state_next_scan[state.to_num() as usize].push((now, addr));
424 state_ref.last_update = now;
428 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
429 let settings_file = self.store.clone() + "/settings";
430 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
431 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
432 self.get_u64(U64Setting::RunTimeout),
433 self.get_u64(U64Setting::WasGoodTimeout),
434 self.get_u64(U64Setting::MinProtocolVersion),
435 self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
436 self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
437 self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
438 self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
439 self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
440 self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
441 self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
442 self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
443 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
444 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong)),
445 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
446 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
447 self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
448 self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
449 self.get_u64(U64Setting::RescanInterval(AddressState::EvilNode)),
450 self.get_regex(RegexSetting::SubverRegex).as_str());
451 write_all(f, settings_string).and_then(|(mut f, _)| {
454 tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
458 let nodes_file = self.store.clone() + "/nodes";
459 let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
460 let mut nodes_buff = String::new();
462 let nodes = self.nodes.read().unwrap();
463 nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
464 for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
465 nodes_buff += &sockaddr.to_string();
467 nodes_buff += &node.state.to_num().to_string();
469 nodes_buff += &node.last_services.to_string();
473 write_all(f, nodes_buff)
474 }).and_then(|(mut f, _)| {
477 tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
480 settings_future.join(nodes_future).then(|_| { future::ok(()) })
483 pub fn write_dns(&'static self, bgp_client: Arc<BGPClient>) -> impl Future<Item=(), Error=()> {
484 let dns_file = self.store.clone() + "/nodes.dump";
485 File::create(dns_file.clone() + ".tmp").and_then(move |f| {
486 let mut dns_buff = String::new();
488 let mut rng = thread_rng();
489 for i in &[ 0b00000000001u64,
506 // ^ NODE_NETWORK_LIIMTED
507 //COMPACT_FILTERS ^ ^ NODE_BLOOM
508 // NODE_WITNESS ^ ^ NODE_NETWORK
509 // We support all combos of NETWORK, NETWORK_LIMITED, BLOOM, and WITNESS
510 // We support COMPACT_FILTERS with WITNESS and NETWORK or NETWORK_LIIMTED.
511 let mut tor_set: Vec<Ipv6Addr> = Vec::new();
512 let mut v6_set: Vec<Ipv6Addr> = Vec::new();
513 let mut v4_set: Vec<Ipv4Addr> = Vec::new();
514 macro_rules! add_addr { ($addr: expr) => {
516 IpAddr::V4(v4addr) => v4_set.push(v4addr),
517 IpAddr::V6(v6addr) if v6addr.octets()[..6] == [0xFD,0x87,0xD8,0x7E,0xEB,0x43][..] => tor_set.push(v6addr),
518 IpAddr::V6(v6addr) => v6_set.push(v6addr),
522 let nodes = self.nodes.read().unwrap();
523 if i.count_ones() == 1 {
525 if i & (1 << j) != 0 {
526 let set_ref = &nodes.good_node_services[j];
527 for a in set_ref.iter().filter(|e| e.port() == 8333) {
533 } else if i.count_ones() == 2 {
534 let mut first_set = None;
535 let mut second_set = None;
537 if i & (1 << j) != 0 {
538 if first_set == None {
539 first_set = Some(&nodes.good_node_services[j]);
541 second_set = Some(&nodes.good_node_services[j]);
546 for a in first_set.unwrap().intersection(&second_set.unwrap()).filter(|e| e.port() == 8333) {
550 //TODO: Could optimize this one a bit
551 let mut intersection;
552 let mut intersection_set_ref = None;
554 if i & (1 << j) != 0 {
555 if intersection_set_ref == None {
556 intersection_set_ref = Some(&nodes.good_node_services[j]);
558 let new_intersection = intersection_set_ref.unwrap()
559 .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
560 intersection = Some(new_intersection);
561 intersection_set_ref = Some(intersection.as_ref().unwrap());
565 for a in intersection_set_ref.unwrap().iter().filter(|e| e.port() == 8333) {
570 let mut asn_set = HashSet::with_capacity(cmp::max(v4_set.len(), v6_set.len()));
572 for a in v4_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V4(**a)))).choose_multiple(&mut rng, 21) {
573 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
577 for a in v6_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V6(**a)))).choose_multiple(&mut rng, 10) {
578 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
580 for a in tor_set.iter().choose_multiple(&mut rng, 2) {
581 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
585 write_all(f, dns_buff)
586 }).and_then(|(mut f, _)| {
589 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
590 }).then(|_| { future::ok(()) })
593 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
594 let mut res = Vec::with_capacity(128);
595 let cur_time = Instant::now();
598 let mut nodes = self.nodes.write().unwrap();
599 for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
600 let rescan_interval = cmp::max(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())), 1);
601 let cmp_time = cur_time - Duration::from_secs(rescan_interval);
602 let split_point = cmp::min(SECS_PER_SCAN_RESULTS * state_nodes.len() as u64 / rescan_interval,
603 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx) as u64);
604 let mut new_nodes = state_nodes.split_off(split_point as usize);
605 mem::swap(&mut new_nodes, state_nodes);
606 for (_, node) in new_nodes.drain(..) {
607 res.push((&node).into());
611 res.shuffle(&mut thread_rng());