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 use crate::bgp_client::BGPClient;
21 #[derive(Clone, Copy, Hash, PartialEq, Eq)]
22 pub enum AddressState {
41 pub fn from_num(num: u8) -> Option<AddressState> {
43 0x0 => Some(AddressState::Untested),
44 0x1 => Some(AddressState::LowBlockCount),
45 0x2 => Some(AddressState::HighBlockCount),
46 0x3 => Some(AddressState::LowVersion),
47 0x4 => Some(AddressState::BadVersion),
48 0x5 => Some(AddressState::NotFullNode),
49 0x6 => Some(AddressState::ProtocolViolation),
50 0x7 => Some(AddressState::Timeout),
51 0x8 => Some(AddressState::TimeoutDuringRequest),
52 0x9 => Some(AddressState::TimeoutAwaitingPong),
53 0xa => Some(AddressState::TimeoutAwaitingAddr),
54 0xb => Some(AddressState::TimeoutAwaitingBlock),
55 0xc => Some(AddressState::Good),
56 0xd => Some(AddressState::WasGood),
57 0xe => Some(AddressState::EvilNode),
62 pub fn to_num(&self) -> u8 {
64 AddressState::Untested => 0,
65 AddressState::LowBlockCount => 1,
66 AddressState::HighBlockCount => 2,
67 AddressState::LowVersion => 3,
68 AddressState::BadVersion => 4,
69 AddressState::NotFullNode => 5,
70 AddressState::ProtocolViolation => 6,
71 AddressState::Timeout => 7,
72 AddressState::TimeoutDuringRequest => 8,
73 AddressState::TimeoutAwaitingPong => 9,
74 AddressState::TimeoutAwaitingAddr => 10,
75 AddressState::TimeoutAwaitingBlock => 11,
76 AddressState::Good => 12,
77 AddressState::WasGood => 13,
78 AddressState::EvilNode => 14,
82 pub fn to_str(&self) -> &'static str {
84 AddressState::Untested => "Untested",
85 AddressState::LowBlockCount => "Low Block Count",
86 AddressState::HighBlockCount => "High Block Count",
87 AddressState::LowVersion => "Low Version",
88 AddressState::BadVersion => "Bad Version",
89 AddressState::NotFullNode => "Not Full Node",
90 AddressState::ProtocolViolation => "Protocol Violation",
91 AddressState::Timeout => "Timeout",
92 AddressState::TimeoutDuringRequest => "Timeout During Request",
93 AddressState::TimeoutAwaitingPong => "Timeout Awaiting Pong",
94 AddressState::TimeoutAwaitingAddr => "Timeout Awaiting Addr",
95 AddressState::TimeoutAwaitingBlock => "Timeout Awaiting Block",
96 AddressState::Good => "Good",
97 AddressState::WasGood => "Was Good",
98 AddressState::EvilNode => "Evil Node",
102 pub const fn get_count() -> u8 {
107 #[derive(Hash, PartialEq, Eq)]
108 pub enum U64Setting {
112 RescanInterval(AddressState),
116 #[derive(Hash, PartialEq, Eq)]
117 pub enum RegexSetting {
122 last_update: Instant,
123 last_good: Instant, // Ignored unless state is Good or WasGood
129 good_node_services: Vec<HashSet<SocketAddr>>,
130 nodes_to_state: HashMap<SocketAddr, Node>,
131 state_next_scan: Vec<Vec<(Instant, SocketAddr)>>,
133 struct NodesMutRef<'a> {
134 good_node_services: &'a mut Vec<HashSet<SocketAddr>>,
135 nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
136 state_next_scan: &'a mut Vec<Vec<(Instant, SocketAddr)>>,
140 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
142 good_node_services: &mut self.good_node_services,
143 nodes_to_state: &mut self.nodes_to_state,
144 state_next_scan: &mut self.state_next_scan,
150 u64_settings: RwLock<HashMap<U64Setting, u64>>,
151 subver_regex: RwLock<Arc<Regex>>,
152 nodes: RwLock<Nodes>,
157 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
158 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
159 let mut l = BufReader::new(f).lines();
160 macro_rules! try_read {
161 ($lines: expr, $ty: ty) => { {
162 match $lines.next() {
163 Some(line) => match line {
164 Ok(line) => match line.parse::<$ty>() {
166 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
168 Err(e) => return future::err(e),
170 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
174 let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
175 u64s.insert(U64Setting::ConnsPerSec, try_read!(l, u64));
176 u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
177 u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
178 u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
179 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), try_read!(l, u64));
180 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), try_read!(l, u64));
181 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), try_read!(l, u64));
182 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), try_read!(l, u64));
183 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), try_read!(l, u64));
184 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), try_read!(l, u64));
185 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
186 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
187 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
188 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), try_read!(l, u64));
189 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), try_read!(l, u64));
190 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), try_read!(l, u64));
191 u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
192 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
193 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), try_read!(l, u64));
194 future::ok((u64s, try_read!(l, Regex)))
195 }).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
196 let mut u64s = HashMap::with_capacity(15);
197 u64s.insert(U64Setting::ConnsPerSec, 10);
198 u64s.insert(U64Setting::RunTimeout, 120);
199 u64s.insert(U64Setting::WasGoodTimeout, 21600);
200 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 0);
201 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
202 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
203 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
204 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
205 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
206 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
207 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
208 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
209 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), 3600);
210 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
211 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
212 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
213 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
214 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), 315360000);
215 u64s.insert(U64Setting::MinProtocolVersion, 70002);
216 future::ok((u64s, Regex::new(".*").unwrap()))
219 macro_rules! nodes_uninitd {
221 let mut state_vecs = Vec::with_capacity(AddressState::get_count() as usize);
222 for _ in 0..AddressState::get_count() {
223 state_vecs.push(Vec::new());
225 let mut good_node_services = Vec::with_capacity(64);
227 good_node_services.push(HashSet::new());
231 nodes_to_state: HashMap::new(),
232 state_next_scan: state_vecs,
237 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
238 let mut res = nodes_uninitd!();
239 let l = BufReader::new(f).lines();
241 let line = match line_res {
243 Err(_) => return future::ok(res),
245 let mut line_iter = line.split(',');
246 macro_rules! try_read {
247 ($lines: expr, $ty: ty) => { {
248 match $lines.next() {
249 Some(line) => match line.parse::<$ty>() {
251 Err(_) => return future::ok(res),
253 None => return future::ok(res),
257 let sockaddr = try_read!(line_iter, SocketAddr);
258 let state = try_read!(line_iter, u8);
259 let last_services = try_read!(line_iter, u64);
261 state: match AddressState::from_num(state) {
263 None => return future::ok(res),
266 last_update: Instant::now(),
267 last_good: Instant::now(),
269 if node.state == AddressState::Good {
271 if node.last_services & (1 << i) != 0 {
272 res.good_node_services[i].insert(sockaddr);
276 res.state_next_scan[node.state.to_num() as usize].push((Instant::now(), sockaddr));
277 res.nodes_to_state.insert(sockaddr, node);
280 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
281 future::ok(nodes_uninitd!())
283 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
285 u64_settings: RwLock::new(u64_settings),
286 subver_regex: RwLock::new(Arc::new(regex)),
287 nodes: RwLock::new(nodes),
293 pub fn get_u64(&self, setting: U64Setting) -> u64 {
294 *self.u64_settings.read().unwrap().get(&setting).unwrap()
297 pub fn set_u64(&self, setting: U64Setting, value: u64) {
298 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
301 pub fn get_node_count(&self, state: AddressState) -> usize {
302 self.nodes.read().unwrap().state_next_scan[state.to_num() as usize].len()
305 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
306 Arc::clone(&*self.subver_regex.read().unwrap())
309 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
310 *self.subver_regex.write().unwrap() = Arc::new(value);
313 pub fn add_fresh_addrs<I: Iterator<Item=SocketAddr>>(&self, addresses: I) -> u64 {
315 let mut nodes = self.nodes.write().unwrap();
316 let cur_time = Instant::now();
317 for addr in addresses {
318 match nodes.nodes_to_state.entry(addr.clone()) {
319 hash_map::Entry::Vacant(e) => {
321 state: AddressState::Untested,
323 last_update: cur_time,
326 nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr));
329 hash_map::Entry::Occupied(_) => {},
335 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
336 self.add_fresh_addrs(addresses.iter().filter_map(|(_, addr)| {
337 match addr.socket_addr() {
338 Ok(socketaddr) => Some(socketaddr),
339 Err(_) => None, // TODO: Handle onions
344 pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> AddressState {
345 let mut nodes_lock = self.nodes.write().unwrap();
346 let nodes = nodes_lock.borrow_mut();
347 let now = Instant::now();
349 let state_ref = nodes.nodes_to_state.entry(addr).or_insert(Node {
350 state: AddressState::Untested,
355 let ret = state_ref.state;
356 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
357 && state != AddressState::Good
358 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
359 state_ref.state = AddressState::WasGood;
361 if state_ref.last_services & (1 << i) != 0 {
362 nodes.good_node_services[i].remove(&addr);
365 state_ref.last_services = 0;
366 nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
368 state_ref.state = state;
369 if state == AddressState::Good {
371 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
372 nodes.good_node_services[i].insert(addr);
373 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
374 nodes.good_node_services[i].remove(&addr);
377 state_ref.last_services = services;
378 state_ref.last_good = now;
380 nodes.state_next_scan[state.to_num() as usize].push((now, addr));
382 state_ref.last_update = now;
386 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
387 let settings_file = self.store.clone() + "/settings";
388 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
389 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
390 self.get_u64(U64Setting::ConnsPerSec),
391 self.get_u64(U64Setting::RunTimeout),
392 self.get_u64(U64Setting::WasGoodTimeout),
393 self.get_u64(U64Setting::MinProtocolVersion),
394 self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
395 self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
396 self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
397 self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
398 self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
399 self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
400 self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
401 self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
402 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
403 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong)),
404 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
405 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
406 self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
407 self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
408 self.get_u64(U64Setting::RescanInterval(AddressState::EvilNode)),
409 self.get_regex(RegexSetting::SubverRegex).as_str());
410 write_all(f, settings_string).and_then(|(mut f, _)| {
413 tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
417 let nodes_file = self.store.clone() + "/nodes";
418 let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
419 let mut nodes_buff = String::new();
421 let nodes = self.nodes.read().unwrap();
422 nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
423 for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
424 nodes_buff += &sockaddr.to_string();
426 nodes_buff += &node.state.to_num().to_string();
428 nodes_buff += &node.last_services.to_string();
432 write_all(f, nodes_buff)
433 }).and_then(|(mut f, _)| {
436 tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
439 settings_future.join(nodes_future).then(|_| { future::ok(()) })
442 pub fn write_dns(&'static self, bgp_client: Arc<BGPClient>) -> impl Future<Item=(), Error=()> {
443 let dns_file = self.store.clone() + "/nodes.dump";
444 File::create(dns_file.clone() + ".tmp").and_then(move |f| {
445 let mut dns_buff = String::new();
447 let mut rng = thread_rng();
448 for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
449 let mut v6_set: Vec<IpAddr> = Vec::new();
450 let mut v4_set: Vec<IpAddr> = Vec::new();
452 let nodes = self.nodes.read().unwrap();
453 if i.count_ones() == 1 {
455 if i & (1 << j) != 0 {
456 let set_ref = &nodes.good_node_services[j];
457 v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
458 v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
462 } else if i.count_ones() == 2 {
463 let mut first_set = None;
464 let mut second_set = None;
466 if i & (1 << j) != 0 {
467 if first_set == None {
468 first_set = Some(&nodes.good_node_services[j]);
470 second_set = Some(&nodes.good_node_services[j]);
475 v4_set = first_set.unwrap().intersection(&second_set.unwrap())
476 .filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
477 v6_set = first_set.unwrap().intersection(&second_set.unwrap())
478 .filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
480 //TODO: Could optimize this one a bit
481 let mut intersection;
482 let mut intersection_set_ref = None;
484 if i & (1 << j) != 0 {
485 if intersection_set_ref == None {
486 intersection_set_ref = Some(&nodes.good_node_services[j]);
488 let new_intersection = intersection_set_ref.unwrap()
489 .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
490 intersection = Some(new_intersection);
491 intersection_set_ref = Some(intersection.as_ref().unwrap());
495 v4_set = intersection_set_ref.unwrap().iter()
496 .filter(|e| e.is_ipv4() && e.port() == 8333).map(|e| e.ip()).collect();
497 v6_set = intersection_set_ref.unwrap().iter()
498 .filter(|e| e.is_ipv6() && e.port() == 8333).map(|e| e.ip()).collect();
501 let mut asn_set = HashSet::with_capacity(cmp::max(v4_set.len(), v6_set.len()));
503 for a in v4_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(**a))).choose_multiple(&mut rng, 21) {
504 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
508 for a in v6_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(**a))).choose_multiple(&mut rng, 12) {
509 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
513 write_all(f, dns_buff)
514 }).and_then(|(mut f, _)| {
517 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
518 }).then(|_| { future::ok(()) })
521 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
522 let results = 30 * self.get_u64(U64Setting::ConnsPerSec) as usize;
523 let per_bucket_results = results / (AddressState::get_count() as usize);
524 let mut res = Vec::with_capacity(results);
525 let cur_time = Instant::now();
528 let mut nodes = self.nodes.write().unwrap();
529 for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
530 let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())));
531 let split_point = cmp::min(cmp::min(results - res.len(), (per_bucket_results * (idx + 1)) - res.len()),
532 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
533 let mut new_nodes = state_nodes.split_off(split_point);
534 mem::swap(&mut new_nodes, state_nodes);
535 for (_, node) in new_nodes.drain(..) {
540 res.shuffle(&mut thread_rng());