2 use std::collections::{HashSet, HashMap, hash_map};
3 use std::sync::{Arc, RwLock};
4 use std::net::{IpAddr, SocketAddr};
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 #[derive(Clone, Copy, Hash, PartialEq, Eq)]
20 pub enum AddressState {
39 pub fn from_num(num: u8) -> Option<AddressState> {
41 0x0 => Some(AddressState::Untested),
42 0x1 => Some(AddressState::LowBlockCount),
43 0x2 => Some(AddressState::HighBlockCount),
44 0x3 => Some(AddressState::LowVersion),
45 0x4 => Some(AddressState::BadVersion),
46 0x5 => Some(AddressState::NotFullNode),
47 0x6 => Some(AddressState::ProtocolViolation),
48 0x7 => Some(AddressState::Timeout),
49 0x8 => Some(AddressState::TimeoutDuringRequest),
50 0x9 => Some(AddressState::TimeoutAwaitingPong),
51 0xa => Some(AddressState::TimeoutAwaitingAddr),
52 0xb => Some(AddressState::TimeoutAwaitingBlock),
53 0xc => Some(AddressState::Good),
54 0xd => Some(AddressState::WasGood),
55 0xe => Some(AddressState::EvilNode),
60 pub fn to_num(&self) -> u8 {
62 AddressState::Untested => 0,
63 AddressState::LowBlockCount => 1,
64 AddressState::HighBlockCount => 2,
65 AddressState::LowVersion => 3,
66 AddressState::BadVersion => 4,
67 AddressState::NotFullNode => 5,
68 AddressState::ProtocolViolation => 6,
69 AddressState::Timeout => 7,
70 AddressState::TimeoutDuringRequest => 8,
71 AddressState::TimeoutAwaitingPong => 9,
72 AddressState::TimeoutAwaitingAddr => 10,
73 AddressState::TimeoutAwaitingBlock => 11,
74 AddressState::Good => 12,
75 AddressState::WasGood => 13,
76 AddressState::EvilNode => 14,
80 pub fn to_str(&self) -> &'static str {
82 AddressState::Untested => "Untested",
83 AddressState::LowBlockCount => "Low Block Count",
84 AddressState::HighBlockCount => "High Block Count",
85 AddressState::LowVersion => "Low Version",
86 AddressState::BadVersion => "Bad Version",
87 AddressState::NotFullNode => "Not Full Node",
88 AddressState::ProtocolViolation => "Protocol Violation",
89 AddressState::Timeout => "Timeout",
90 AddressState::TimeoutDuringRequest => "Timeout During Request",
91 AddressState::TimeoutAwaitingPong => "Timeout Awaiting Pong",
92 AddressState::TimeoutAwaitingAddr => "Timeout Awaiting Addr",
93 AddressState::TimeoutAwaitingBlock => "Timeout Awaiting Block",
94 AddressState::Good => "Good",
95 AddressState::WasGood => "Was Good",
96 AddressState::EvilNode => "Evil Node",
100 pub const fn get_count() -> u8 {
105 #[derive(Hash, PartialEq, Eq)]
106 pub enum U64Setting {
110 RescanInterval(AddressState),
114 #[derive(Hash, PartialEq, Eq)]
115 pub enum RegexSetting {
120 last_update: Instant,
121 last_good: Instant, // Ignored unless state is Good or WasGood
127 good_node_services: Vec<HashSet<SocketAddr>>,
128 nodes_to_state: HashMap<SocketAddr, Node>,
129 state_next_scan: Vec<Vec<(Instant, SocketAddr)>>,
131 struct NodesMutRef<'a> {
132 good_node_services: &'a mut Vec<HashSet<SocketAddr>>,
133 nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
134 state_next_scan: &'a mut Vec<Vec<(Instant, SocketAddr)>>,
138 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
140 good_node_services: &mut self.good_node_services,
141 nodes_to_state: &mut self.nodes_to_state,
142 state_next_scan: &mut self.state_next_scan,
148 u64_settings: RwLock<HashMap<U64Setting, u64>>,
149 subver_regex: RwLock<Arc<Regex>>,
150 nodes: RwLock<Nodes>,
155 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
156 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
157 let mut l = BufReader::new(f).lines();
158 macro_rules! try_read {
159 ($lines: expr, $ty: ty) => { {
160 match $lines.next() {
161 Some(line) => match line {
162 Ok(line) => match line.parse::<$ty>() {
164 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
166 Err(e) => return future::err(e),
168 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
172 let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
173 u64s.insert(U64Setting::ConnsPerSec, try_read!(l, u64));
174 u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
175 u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
176 u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
177 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), try_read!(l, u64));
178 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), try_read!(l, u64));
179 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), try_read!(l, u64));
180 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), try_read!(l, u64));
181 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), try_read!(l, u64));
182 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), try_read!(l, u64));
183 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
184 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
185 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
186 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), try_read!(l, u64));
187 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), try_read!(l, u64));
188 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), try_read!(l, u64));
189 u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
190 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
191 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), try_read!(l, u64));
192 future::ok((u64s, try_read!(l, Regex)))
193 }).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
194 let mut u64s = HashMap::with_capacity(15);
195 u64s.insert(U64Setting::ConnsPerSec, 10);
196 u64s.insert(U64Setting::RunTimeout, 120);
197 u64s.insert(U64Setting::WasGoodTimeout, 21600);
198 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 0);
199 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
200 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
201 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
202 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
203 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
204 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
205 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
206 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
207 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), 3600);
208 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
209 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
210 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
211 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
212 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), 315360000);
213 u64s.insert(U64Setting::MinProtocolVersion, 70002);
214 future::ok((u64s, Regex::new(".*").unwrap()))
217 macro_rules! nodes_uninitd {
219 let mut state_vecs = Vec::with_capacity(AddressState::get_count() as usize);
220 for _ in 0..AddressState::get_count() {
221 state_vecs.push(Vec::new());
223 let mut good_node_services = Vec::with_capacity(64);
225 good_node_services.push(HashSet::new());
229 nodes_to_state: HashMap::new(),
230 state_next_scan: state_vecs,
235 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
236 let mut res = nodes_uninitd!();
237 let l = BufReader::new(f).lines();
239 let line = match line_res {
241 Err(_) => return future::ok(res),
243 let mut line_iter = line.split(',');
244 macro_rules! try_read {
245 ($lines: expr, $ty: ty) => { {
246 match $lines.next() {
247 Some(line) => match line.parse::<$ty>() {
249 Err(_) => return future::ok(res),
251 None => return future::ok(res),
255 let sockaddr = try_read!(line_iter, SocketAddr);
256 let state = try_read!(line_iter, u8);
257 let last_services = try_read!(line_iter, u64);
259 state: match AddressState::from_num(state) {
261 None => return future::ok(res),
264 last_update: Instant::now(),
265 last_good: Instant::now(),
267 if node.state == AddressState::Good {
269 if node.last_services & (1 << i) != 0 {
270 res.good_node_services[i].insert(sockaddr);
274 res.state_next_scan[node.state.to_num() as usize].push((Instant::now(), sockaddr));
275 res.nodes_to_state.insert(sockaddr, node);
278 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
279 future::ok(nodes_uninitd!())
281 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
283 u64_settings: RwLock::new(u64_settings),
284 subver_regex: RwLock::new(Arc::new(regex)),
285 nodes: RwLock::new(nodes),
291 pub fn get_u64(&self, setting: U64Setting) -> u64 {
292 *self.u64_settings.read().unwrap().get(&setting).unwrap()
295 pub fn set_u64(&self, setting: U64Setting, value: u64) {
296 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
299 pub fn get_node_count(&self, state: AddressState) -> usize {
300 self.nodes.read().unwrap().state_next_scan[state.to_num() as usize].len()
303 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
304 Arc::clone(&*self.subver_regex.read().unwrap())
307 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
308 *self.subver_regex.write().unwrap() = Arc::new(value);
311 pub fn add_fresh_addrs<I: Iterator<Item=SocketAddr>>(&self, addresses: I) -> u64 {
313 let mut nodes = self.nodes.write().unwrap();
314 let cur_time = Instant::now();
315 for addr in addresses {
316 match nodes.nodes_to_state.entry(addr.clone()) {
317 hash_map::Entry::Vacant(e) => {
319 state: AddressState::Untested,
321 last_update: cur_time,
324 nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr));
327 hash_map::Entry::Occupied(_) => {},
333 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
334 self.add_fresh_addrs(addresses.iter().filter_map(|(_, addr)| {
335 match addr.socket_addr() {
336 Ok(socketaddr) => Some(socketaddr),
337 Err(_) => None, // TODO: Handle onions
342 pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> AddressState {
343 let mut nodes_lock = self.nodes.write().unwrap();
344 let nodes = nodes_lock.borrow_mut();
345 let now = Instant::now();
347 let state_ref = nodes.nodes_to_state.entry(addr).or_insert(Node {
348 state: AddressState::Untested,
353 let ret = state_ref.state;
354 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
355 && state != AddressState::Good
356 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
357 state_ref.state = AddressState::WasGood;
359 if state_ref.last_services & (1 << i) != 0 {
360 nodes.good_node_services[i].remove(&addr);
363 state_ref.last_services = 0;
364 nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
366 state_ref.state = state;
367 if state == AddressState::Good {
369 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
370 nodes.good_node_services[i].insert(addr);
371 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
372 nodes.good_node_services[i].remove(&addr);
375 state_ref.last_services = services;
376 state_ref.last_good = now;
378 nodes.state_next_scan[state.to_num() as usize].push((now, addr));
380 state_ref.last_update = now;
384 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
385 let settings_file = self.store.clone() + "/settings";
386 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
387 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
388 self.get_u64(U64Setting::ConnsPerSec),
389 self.get_u64(U64Setting::RunTimeout),
390 self.get_u64(U64Setting::WasGoodTimeout),
391 self.get_u64(U64Setting::MinProtocolVersion),
392 self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
393 self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
394 self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
395 self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
396 self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
397 self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
398 self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
399 self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
400 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
401 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong)),
402 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
403 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
404 self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
405 self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
406 self.get_u64(U64Setting::RescanInterval(AddressState::EvilNode)),
407 self.get_regex(RegexSetting::SubverRegex).as_str());
408 write_all(f, settings_string).and_then(|(mut f, _)| {
411 tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
415 let nodes_file = self.store.clone() + "/nodes";
416 let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
417 let mut nodes_buff = String::new();
419 let nodes = self.nodes.read().unwrap();
420 nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
421 for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
422 nodes_buff += &sockaddr.to_string();
424 nodes_buff += &node.state.to_num().to_string();
426 nodes_buff += &node.last_services.to_string();
430 write_all(f, nodes_buff)
431 }).and_then(|(mut f, _)| {
434 tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
437 settings_future.join(nodes_future).then(|_| { future::ok(()) })
440 pub fn write_dns(&'static self) -> impl Future<Item=(), Error=()> {
441 let dns_file = self.store.clone() + "/nodes.dump";
442 File::create(dns_file.clone() + ".tmp").and_then(move |f| {
443 let mut dns_buff = String::new();
445 let mut rng = thread_rng();
446 for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
447 let mut v6_set: Vec<IpAddr> = Vec::new();
448 let mut v4_set: Vec<IpAddr> = Vec::new();
450 let nodes = self.nodes.read().unwrap();
451 if i.count_ones() == 1 {
453 if i & (1 << j) != 0 {
454 let set_ref = &nodes.good_node_services[j];
455 v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
456 v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
460 } else if i.count_ones() == 2 {
461 let mut first_set = None;
462 let mut second_set = None;
464 if i & (1 << j) != 0 {
465 if first_set == None {
466 first_set = Some(&nodes.good_node_services[j]);
468 second_set = Some(&nodes.good_node_services[j]);
473 v4_set = first_set.unwrap().intersection(&second_set.unwrap())
474 .filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
475 v6_set = first_set.unwrap().intersection(&second_set.unwrap())
476 .filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
478 //TODO: Could optimize this one a bit
479 let mut intersection;
480 let mut intersection_set_ref = None;
482 if i & (1 << j) != 0 {
483 if intersection_set_ref == None {
484 intersection_set_ref = Some(&nodes.good_node_services[j]);
486 let new_intersection = intersection_set_ref.unwrap()
487 .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
488 intersection = Some(new_intersection);
489 intersection_set_ref = Some(intersection.as_ref().unwrap());
493 v4_set = intersection_set_ref.unwrap().iter()
494 .filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
495 v6_set = intersection_set_ref.unwrap().iter()
496 .filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
499 for a in v4_set.iter().choose_multiple(&mut rng, 21) {
500 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
502 for a in v6_set.iter().choose_multiple(&mut rng, 12) {
503 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
507 write_all(f, dns_buff)
508 }).and_then(|(mut f, _)| {
511 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
512 }).then(|_| { future::ok(()) })
515 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
516 let results = 30 * self.get_u64(U64Setting::ConnsPerSec) as usize;
517 let per_bucket_results = results / (AddressState::get_count() as usize);
518 let mut res = Vec::with_capacity(results);
519 let cur_time = Instant::now();
522 let mut nodes = self.nodes.write().unwrap();
523 for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
524 let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())));
525 let split_point = cmp::min(cmp::min(results - res.len(), (per_bucket_results * (idx + 1)) - res.len()),
526 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
527 let mut new_nodes = state_nodes.split_off(split_point);
528 mem::swap(&mut new_nodes, state_nodes);
529 for (_, node) in new_nodes.drain(..) {
534 res.shuffle(&mut thread_rng());