2 use std::collections::{HashSet, HashMap, hash_map};
3 use std::sync::{Arc, RwLock};
4 use std::net::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 {
37 pub fn from_num(num: u8) -> Option<AddressState> {
39 0x0 => Some(AddressState::Untested),
40 0x1 => Some(AddressState::LowBlockCount),
41 0x2 => Some(AddressState::HighBlockCount),
42 0x3 => Some(AddressState::LowVersion),
43 0x4 => Some(AddressState::BadVersion),
44 0x5 => Some(AddressState::NotFullNode),
45 0x6 => Some(AddressState::ProtocolViolation),
46 0x7 => Some(AddressState::Timeout),
47 0x8 => Some(AddressState::TimeoutDuringRequest),
48 0x9 => Some(AddressState::TimeoutAwaitingAddr),
49 0xa => Some(AddressState::TimeoutAwaitingBlock),
50 0xb => Some(AddressState::Good),
51 0xc => Some(AddressState::WasGood),
56 pub fn to_num(&self) -> u8 {
58 AddressState::Untested => 0,
59 AddressState::LowBlockCount => 1,
60 AddressState::HighBlockCount => 2,
61 AddressState::LowVersion => 3,
62 AddressState::BadVersion => 4,
63 AddressState::NotFullNode => 5,
64 AddressState::ProtocolViolation => 6,
65 AddressState::Timeout => 7,
66 AddressState::TimeoutDuringRequest => 8,
67 AddressState::TimeoutAwaitingAddr => 9,
68 AddressState::TimeoutAwaitingBlock => 10,
69 AddressState::Good => 11,
70 AddressState::WasGood => 12,
74 pub fn to_str(&self) -> &'static str {
76 AddressState::Untested => "Untested",
77 AddressState::LowBlockCount => "Low Block Count",
78 AddressState::HighBlockCount => "High Block Count",
79 AddressState::LowVersion => "Low Version",
80 AddressState::BadVersion => "Bad Version",
81 AddressState::NotFullNode => "Not Full Node",
82 AddressState::ProtocolViolation => "Protocol Violation",
83 AddressState::Timeout => "Timeout",
84 AddressState::TimeoutDuringRequest => "Timeout During Request",
85 AddressState::TimeoutAwaitingAddr => "Timeout Awaiting Addr",
86 AddressState::TimeoutAwaitingBlock => "Timeout Awaiting Block",
87 AddressState::Good => "Good",
88 AddressState::WasGood => "Was Good",
92 pub const fn get_count() -> u8 {
97 #[derive(Hash, PartialEq, Eq)]
102 RescanInterval(AddressState),
106 #[derive(Hash, PartialEq, Eq)]
107 pub enum RegexSetting {
112 last_update: Instant,
113 last_good: Instant, // Ignored unless state is Good or WasGood
119 good_node_services: Vec<HashSet<SocketAddr>>,
120 nodes_to_state: HashMap<SocketAddr, Node>,
121 state_next_scan: Vec<Vec<(Instant, SocketAddr)>>,
123 struct NodesMutRef<'a> {
124 good_node_services: &'a mut Vec<HashSet<SocketAddr>>,
125 nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
126 state_next_scan: &'a mut Vec<Vec<(Instant, SocketAddr)>>,
130 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
132 good_node_services: &mut self.good_node_services,
133 nodes_to_state: &mut self.nodes_to_state,
134 state_next_scan: &mut self.state_next_scan,
140 u64_settings: RwLock<HashMap<U64Setting, u64>>,
141 subver_regex: RwLock<Arc<Regex>>,
142 nodes: RwLock<Nodes>,
147 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
148 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
149 let mut l = BufReader::new(f).lines();
150 macro_rules! try_read {
151 ($lines: expr, $ty: ty) => { {
152 match $lines.next() {
153 Some(line) => match line {
154 Ok(line) => match line.parse::<$ty>() {
156 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
158 Err(e) => return future::err(e),
160 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
164 let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
165 u64s.insert(U64Setting::ConnsPerSec, try_read!(l, u64));
166 u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
167 u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
168 u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
169 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), try_read!(l, u64));
170 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), try_read!(l, u64));
171 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), try_read!(l, u64));
172 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), try_read!(l, u64));
173 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), try_read!(l, u64));
174 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), try_read!(l, u64));
175 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
176 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
177 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
178 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), try_read!(l, u64));
179 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), try_read!(l, u64));
180 u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
181 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
182 future::ok((u64s, try_read!(l, Regex)))
183 }).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
184 let mut u64s = HashMap::with_capacity(15);
185 u64s.insert(U64Setting::ConnsPerSec, 10);
186 u64s.insert(U64Setting::RunTimeout, 120);
187 u64s.insert(U64Setting::WasGoodTimeout, 21600);
188 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 0);
189 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
190 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
191 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
192 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
193 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
194 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
195 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
196 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
197 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
198 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
199 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
200 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
201 u64s.insert(U64Setting::MinProtocolVersion, 70002);
202 future::ok((u64s, Regex::new(".*").unwrap()))
205 macro_rules! nodes_uninitd {
207 let mut state_vecs = Vec::with_capacity(AddressState::get_count() as usize);
208 for _ in 0..AddressState::get_count() {
209 state_vecs.push(Vec::new());
211 let mut good_node_services = Vec::with_capacity(64);
213 good_node_services.push(HashSet::new());
217 nodes_to_state: HashMap::new(),
218 state_next_scan: state_vecs,
223 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
224 let mut res = nodes_uninitd!();
225 let l = BufReader::new(f).lines();
227 let line = match line_res {
229 Err(_) => return future::ok(res),
231 let mut line_iter = line.split(',');
232 macro_rules! try_read {
233 ($lines: expr, $ty: ty) => { {
234 match $lines.next() {
235 Some(line) => match line.parse::<$ty>() {
237 Err(_) => return future::ok(res),
239 None => return future::ok(res),
243 let sockaddr = try_read!(line_iter, SocketAddr);
244 let state = try_read!(line_iter, u8);
245 let last_services = try_read!(line_iter, u64);
247 state: match AddressState::from_num(state) {
249 None => return future::ok(res),
252 last_update: Instant::now(),
253 last_good: Instant::now(),
255 if node.state == AddressState::Good {
257 if node.last_services & (1 << i) != 0 {
258 res.good_node_services[i].insert(sockaddr);
262 res.state_next_scan[node.state.to_num() as usize].push((Instant::now(), sockaddr));
263 res.nodes_to_state.insert(sockaddr, node);
266 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
267 future::ok(nodes_uninitd!())
269 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
271 u64_settings: RwLock::new(u64_settings),
272 subver_regex: RwLock::new(Arc::new(regex)),
273 nodes: RwLock::new(nodes),
279 pub fn get_u64(&self, setting: U64Setting) -> u64 {
280 *self.u64_settings.read().unwrap().get(&setting).unwrap()
283 pub fn set_u64(&self, setting: U64Setting, value: u64) {
284 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
287 pub fn get_node_count(&self, state: AddressState) -> usize {
288 self.nodes.read().unwrap().state_next_scan[state.to_num() as usize].len()
291 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
292 Arc::clone(&*self.subver_regex.read().unwrap())
295 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
296 *self.subver_regex.write().unwrap() = Arc::new(value);
299 pub fn add_fresh_addrs<I: Iterator<Item=SocketAddr>>(&self, addresses: I) -> u64 {
301 let mut nodes = self.nodes.write().unwrap();
302 let cur_time = Instant::now();
303 for addr in addresses {
304 match nodes.nodes_to_state.entry(addr.clone()) {
305 hash_map::Entry::Vacant(e) => {
307 state: AddressState::Untested,
309 last_update: cur_time,
312 nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr));
315 hash_map::Entry::Occupied(_) => {},
321 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
322 self.add_fresh_addrs(addresses.iter().filter_map(|(_, addr)| {
323 match addr.socket_addr() {
324 Ok(socketaddr) => Some(socketaddr),
325 Err(_) => None, // TODO: Handle onions
330 pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> AddressState {
331 let mut nodes_lock = self.nodes.write().unwrap();
332 let nodes = nodes_lock.borrow_mut();
333 let now = Instant::now();
335 let state_ref = nodes.nodes_to_state.entry(addr).or_insert(Node {
336 state: AddressState::Untested,
341 let ret = state_ref.state;
342 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
343 && state != AddressState::Good
344 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
345 state_ref.state = AddressState::WasGood;
347 if state_ref.last_services & (1 << i) != 0 {
348 nodes.good_node_services[i].remove(&addr);
351 state_ref.last_services = 0;
352 nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
354 state_ref.state = state;
355 if state == AddressState::Good {
357 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
358 nodes.good_node_services[i].insert(addr);
359 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
360 nodes.good_node_services[i].remove(&addr);
363 state_ref.last_services = services;
364 state_ref.last_good = now;
366 nodes.state_next_scan[state.to_num() as usize].push((now, addr));
368 state_ref.last_update = now;
372 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
373 let settings_file = self.store.clone() + "/settings";
374 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
375 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
376 self.get_u64(U64Setting::ConnsPerSec),
377 self.get_u64(U64Setting::RunTimeout),
378 self.get_u64(U64Setting::WasGoodTimeout),
379 self.get_u64(U64Setting::MinProtocolVersion),
380 self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
381 self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
382 self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
383 self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
384 self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
385 self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
386 self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
387 self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
388 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
389 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
390 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
391 self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
392 self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
393 self.get_regex(RegexSetting::SubverRegex).as_str());
394 write_all(f, settings_string).and_then(|(mut f, _)| {
397 tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
401 let nodes_file = self.store.clone() + "/nodes";
402 let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
403 let mut nodes_buff = String::new();
405 let nodes = self.nodes.read().unwrap();
406 nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
407 for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
408 nodes_buff += &sockaddr.to_string();
410 nodes_buff += &node.state.to_num().to_string();
412 nodes_buff += &node.last_services.to_string();
416 write_all(f, nodes_buff)
417 }).and_then(|(mut f, _)| {
420 tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
423 let dns_file = self.store.clone() + "/nodes.dump";
424 let dns_future = File::create(dns_file.clone() + ".tmp").and_then(move |f| {
425 let mut dns_buff = String::new();
427 let nodes = self.nodes.read().unwrap();
428 let mut rng = thread_rng();
429 for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
430 let mut v6_set = Vec::new();
431 let mut v4_set = Vec::new();
432 if i.count_ones() == 1 {
434 if i & (1 << j) != 0 {
435 let set_ref = &nodes.good_node_services[j];
436 v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333)
437 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
438 v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333)
439 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
443 } else if i.count_ones() == 2 {
444 let mut first_set = None;
445 let mut second_set = None;
447 if i & (1 << j) != 0 {
448 if first_set == None {
449 first_set = Some(&nodes.good_node_services[j]);
451 second_set = Some(&nodes.good_node_services[j]);
456 v4_set = first_set.unwrap().intersection(&second_set.unwrap())
457 .filter(|e| e.is_ipv4() && e.port() == 8333)
458 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
459 v6_set = first_set.unwrap().intersection(&second_set.unwrap())
460 .filter(|e| e.is_ipv6() && e.port() == 8333)
461 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
463 //TODO: Could optimize this one a bit
464 let mut intersection;
465 let mut intersection_set_ref = None;
467 if i & (1 << j) != 0 {
468 if intersection_set_ref == None {
469 intersection_set_ref = Some(&nodes.good_node_services[j]);
471 let new_intersection = intersection_set_ref.unwrap()
472 .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
473 intersection = Some(new_intersection);
474 intersection_set_ref = Some(intersection.as_ref().unwrap());
478 v4_set = intersection_set_ref.unwrap().iter()
479 .filter(|e| e.is_ipv4() && e.port() == 8333)
480 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
481 v6_set = intersection_set_ref.unwrap().iter()
482 .filter(|e| e.is_ipv6() && e.port() == 8333)
483 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
486 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
489 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
493 write_all(f, dns_buff)
494 }).and_then(|(mut f, _)| {
497 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
500 settings_future.join3(nodes_future, dns_future).then(|_| { future::ok(()) })
503 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
504 let results = 30 * self.get_u64(U64Setting::ConnsPerSec) as usize;
505 let per_bucket_results = results / (AddressState::get_count() as usize);
506 let mut res = Vec::with_capacity(results);
507 let cur_time = Instant::now();
510 let mut nodes = self.nodes.write().unwrap();
511 for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
512 let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())));
513 let split_point = cmp::min(cmp::min(results - res.len(), (per_bucket_results * (idx + 1)) - res.len()),
514 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
515 let mut new_nodes = state_nodes.split_off(split_point);
516 mem::swap(&mut new_nodes, state_nodes);
517 for (_, node) in new_nodes.drain(..) {
522 res.shuffle(&mut thread_rng());