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 {
35 pub fn from_num(num: u8) -> Option<AddressState> {
37 0x0 => Some(AddressState::Untested),
38 0x1 => Some(AddressState::LowBlockCount),
39 0x2 => Some(AddressState::HighBlockCount),
40 0x3 => Some(AddressState::LowVersion),
41 0x4 => Some(AddressState::BadVersion),
42 0x5 => Some(AddressState::NotFullNode),
43 0x6 => Some(AddressState::ProtocolViolation),
44 0x7 => Some(AddressState::Timeout),
45 0x8 => Some(AddressState::TimeoutDuringRequest),
46 0x9 => Some(AddressState::Good),
47 0xa => Some(AddressState::WasGood),
52 pub fn to_num(&self) -> u8 {
54 AddressState::Untested => 0,
55 AddressState::LowBlockCount => 1,
56 AddressState::HighBlockCount => 2,
57 AddressState::LowVersion => 3,
58 AddressState::BadVersion => 4,
59 AddressState::NotFullNode => 5,
60 AddressState::ProtocolViolation => 6,
61 AddressState::Timeout => 7,
62 AddressState::TimeoutDuringRequest => 8,
63 AddressState::Good => 9,
64 AddressState::WasGood => 10,
68 pub fn to_str(&self) -> &'static str {
70 AddressState::Untested => "Untested",
71 AddressState::LowBlockCount => "Low Block Count",
72 AddressState::HighBlockCount => "High Block Count",
73 AddressState::LowVersion => "Low Version",
74 AddressState::BadVersion => "Bad Version",
75 AddressState::NotFullNode => "Not Full Node",
76 AddressState::ProtocolViolation => "Protocol Violation",
77 AddressState::Timeout => "Timeout",
78 AddressState::TimeoutDuringRequest => "Timeout During Request",
79 AddressState::Good => "Good",
80 AddressState::WasGood => "Was Good",
85 #[derive(Hash, PartialEq, Eq)]
90 RescanInterval(AddressState),
94 #[derive(Hash, PartialEq, Eq)]
95 pub enum RegexSetting {
100 last_update: Instant,
101 last_good: Instant, // Ignored unless state is Good or WasGood
107 good_node_services: HashMap<u8, HashSet<SocketAddr>>,
108 nodes_to_state: HashMap<SocketAddr, Node>,
109 state_next_scan: HashMap<AddressState, Vec<(Instant, SocketAddr)>>,
111 struct NodesMutRef<'a> {
112 good_node_services: &'a mut HashMap<u8, HashSet<SocketAddr>>,
113 nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
114 state_next_scan: &'a mut HashMap<AddressState, Vec<(Instant, SocketAddr)>>,
118 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
120 good_node_services: &mut self.good_node_services,
121 nodes_to_state: &mut self.nodes_to_state,
122 state_next_scan: &mut self.state_next_scan,
128 u64_settings: RwLock<HashMap<U64Setting, u64>>,
129 subver_regex: RwLock<Arc<Regex>>,
130 nodes: RwLock<Nodes>,
135 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
136 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
137 let mut l = BufReader::new(f).lines();
138 macro_rules! try_read {
139 ($lines: expr, $ty: ty) => { {
140 match $lines.next() {
141 Some(line) => match line {
142 Ok(line) => match line.parse::<$ty>() {
144 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
146 Err(e) => return future::err(e),
148 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
152 let mut u64s = HashMap::with_capacity(15);
153 u64s.insert(U64Setting::ConnsPerSec, try_read!(l, u64));
154 u64s.insert(U64Setting::RunTimeout, try_read!(l, u64));
155 u64s.insert(U64Setting::WasGoodTimeout, try_read!(l, u64));
156 u64s.insert(U64Setting::MinProtocolVersion, try_read!(l, u64));
157 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), try_read!(l, u64));
158 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), try_read!(l, u64));
159 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), try_read!(l, u64));
160 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), try_read!(l, u64));
161 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), try_read!(l, u64));
162 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), try_read!(l, u64));
163 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), try_read!(l, u64));
164 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), try_read!(l, u64));
165 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), try_read!(l, u64));
166 u64s.insert(U64Setting::RescanInterval(AddressState::Good), try_read!(l, u64));
167 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), try_read!(l, u64));
168 future::ok((u64s, try_read!(l, Regex)))
169 }).or_else(|_| -> future::FutureResult<(HashMap<U64Setting, u64>, Regex), ()> {
170 let mut u64s = HashMap::with_capacity(15);
171 u64s.insert(U64Setting::ConnsPerSec, 10);
172 u64s.insert(U64Setting::RunTimeout, 120);
173 u64s.insert(U64Setting::WasGoodTimeout, 21600);
174 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 0);
175 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
176 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
177 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
178 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
179 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
180 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
181 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
182 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
183 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
184 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
185 u64s.insert(U64Setting::MinProtocolVersion, 10000); //XXX
186 future::ok((u64s, Regex::new(".*").unwrap()))
189 macro_rules! nodes_uninitd {
191 let mut state_vecs = HashMap::with_capacity(11);
192 state_vecs.insert(AddressState::Untested, Vec::new());
193 state_vecs.insert(AddressState::LowBlockCount, Vec::new());
194 state_vecs.insert(AddressState::HighBlockCount, Vec::new());
195 state_vecs.insert(AddressState::LowVersion, Vec::new());
196 state_vecs.insert(AddressState::BadVersion, Vec::new());
197 state_vecs.insert(AddressState::NotFullNode, Vec::new());
198 state_vecs.insert(AddressState::ProtocolViolation, Vec::new());
199 state_vecs.insert(AddressState::Timeout, Vec::new());
200 state_vecs.insert(AddressState::TimeoutDuringRequest, Vec::new());
201 state_vecs.insert(AddressState::Good, Vec::new());
202 state_vecs.insert(AddressState::WasGood, Vec::new());
203 let mut good_node_services = HashMap::with_capacity(64);
205 good_node_services.insert(i, HashSet::new());
209 nodes_to_state: HashMap::new(),
210 state_next_scan: state_vecs,
215 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
216 let mut res = nodes_uninitd!();
217 let l = BufReader::new(f).lines();
219 let line = match line_res {
221 Err(_) => return future::ok(res),
223 let mut line_iter = line.split(',');
224 macro_rules! try_read {
225 ($lines: expr, $ty: ty) => { {
226 match $lines.next() {
227 Some(line) => match line.parse::<$ty>() {
229 Err(_) => return future::ok(res),
231 None => return future::ok(res),
235 let sockaddr = try_read!(line_iter, SocketAddr);
236 let state = try_read!(line_iter, u8);
237 let last_services = try_read!(line_iter, u64);
239 state: match AddressState::from_num(state) {
241 None => return future::ok(res),
244 last_update: Instant::now(),
245 last_good: Instant::now(),
247 if node.state == AddressState::Good {
249 if node.last_services & (1 << i) != 0 {
250 res.good_node_services.get_mut(&i).unwrap().insert(sockaddr);
254 res.state_next_scan.get_mut(&node.state).unwrap().push((Instant::now(), sockaddr));
255 res.nodes_to_state.insert(sockaddr, node);
258 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
259 future::ok(nodes_uninitd!())
261 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
263 u64_settings: RwLock::new(u64_settings),
264 subver_regex: RwLock::new(Arc::new(regex)),
265 nodes: RwLock::new(nodes),
271 pub fn get_u64(&self, setting: U64Setting) -> u64 {
272 *self.u64_settings.read().unwrap().get(&setting).unwrap()
275 pub fn set_u64(&self, setting: U64Setting, value: u64) {
276 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
279 pub fn get_node_count(&self, state: AddressState) -> usize {
280 self.nodes.read().unwrap().state_next_scan.get(&state).unwrap().len()
283 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
284 Arc::clone(&*self.subver_regex.read().unwrap())
287 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
288 *self.subver_regex.write().unwrap() = Arc::new(value);
291 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
292 let mut nodes = self.nodes.write().unwrap();
293 let cur_time = Instant::now();
294 for &(_, ref addr) in addresses {
295 if let Ok(socketaddr) = addr.socket_addr() {
296 match nodes.nodes_to_state.entry(socketaddr.clone()) {
297 hash_map::Entry::Vacant(e) => {
299 state: AddressState::Untested,
301 last_update: cur_time,
302 last_good: Instant::now(),
304 nodes.state_next_scan.get_mut(&AddressState::Untested).unwrap().push((cur_time, socketaddr));
306 hash_map::Entry::Occupied(_) => {},
309 //TODO: Handle onions
314 pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> bool {
315 let mut nodes_lock = self.nodes.write().unwrap();
316 let nodes = nodes_lock.borrow_mut();
317 let state_ref = nodes.nodes_to_state.get_mut(&addr).unwrap();
318 let ret = state != state_ref.state;
319 let now = Instant::now();
320 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
321 && state != AddressState::Good
322 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
323 state_ref.state = AddressState::WasGood;
325 if state_ref.last_services & (1 << i) != 0 {
326 nodes.good_node_services.get_mut(&i).unwrap().remove(&addr);
329 state_ref.last_services = 0;
330 nodes.state_next_scan.get_mut(&AddressState::WasGood).unwrap().push((now, addr));
332 state_ref.state = state;
333 if state == AddressState::Good {
335 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
336 nodes.good_node_services.get_mut(&i).unwrap().insert(addr);
337 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
338 nodes.good_node_services.get_mut(&i).unwrap().remove(&addr);
341 state_ref.last_services = services;
342 state_ref.last_good = now;
344 nodes.state_next_scan.get_mut(&state).unwrap().push((now, addr));
346 state_ref.last_update = now;
350 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
351 let settings_file = self.store.clone() + "/settings";
352 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
353 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
354 self.get_u64(U64Setting::ConnsPerSec),
355 self.get_u64(U64Setting::RunTimeout),
356 self.get_u64(U64Setting::WasGoodTimeout),
357 self.get_u64(U64Setting::MinProtocolVersion),
358 self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
359 self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
360 self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
361 self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
362 self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
363 self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
364 self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
365 self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
366 self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
367 self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
368 self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
369 self.get_regex(RegexSetting::SubverRegex).as_str());
370 write_all(f, settings_string).and_then(|(mut f, _)| {
373 tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
377 let nodes_file = self.store.clone() + "/nodes";
378 let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
379 let mut nodes_buff = String::new();
381 let nodes = self.nodes.read().unwrap();
382 nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
383 for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
384 nodes_buff += &sockaddr.to_string();
386 nodes_buff += &node.state.to_num().to_string();
388 nodes_buff += &node.last_services.to_string();
392 write_all(f, nodes_buff)
393 }).and_then(|(mut f, _)| {
396 tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
399 let dns_file = self.store.clone() + "/nodes.dump";
400 let dns_future = File::create(dns_file.clone() + ".tmp").and_then(move |f| {
401 let mut dns_buff = String::new();
403 let nodes = self.nodes.read().unwrap();
404 let mut rng = thread_rng();
405 for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
406 let mut v6_set = Vec::new();
407 let mut v4_set = Vec::new();
408 if i.count_ones() == 1 {
410 if i & (1 << j) != 0 {
411 let set_ref = nodes.good_node_services.get(&j).unwrap();
412 v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333)
413 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
414 v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333)
415 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
419 } else if i.count_ones() == 2 {
420 let mut first_set = None;
421 let mut second_set = None;
423 if i & (1 << j) != 0 {
424 if first_set == None {
425 first_set = Some(nodes.good_node_services.get(&j).unwrap());
427 second_set = Some(nodes.good_node_services.get(&j).unwrap());
432 v4_set = first_set.unwrap().intersection(second_set.unwrap())
433 .filter(|e| e.is_ipv4() && e.port() == 8333)
434 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
435 v6_set = first_set.unwrap().intersection(second_set.unwrap())
436 .filter(|e| e.is_ipv6() && e.port() == 8333)
437 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
439 //TODO: Could optimize this one a bit
440 let mut intersection;
441 let mut intersection_set_ref = None;
443 if i & (1 << j) != 0 {
444 if intersection_set_ref == None {
445 intersection_set_ref = Some(nodes.good_node_services.get(&j).unwrap());
447 let new_intersection = intersection_set_ref.unwrap()
448 .intersection(nodes.good_node_services.get(&j).unwrap()).map(|e| (*e).clone()).collect();
449 intersection = Some(new_intersection);
450 intersection_set_ref = Some(intersection.as_ref().unwrap());
454 v4_set = intersection_set_ref.unwrap().iter()
455 .filter(|e| e.is_ipv4() && e.port() == 8333)
456 .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
457 v6_set = intersection_set_ref.unwrap().iter()
458 .filter(|e| e.is_ipv6() && e.port() == 8333)
459 .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
462 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
465 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
469 write_all(f, dns_buff)
470 }).and_then(|(mut f, _)| {
473 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
476 settings_future.join3(nodes_future, dns_future).then(|_| { future::ok(()) })
479 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
480 let mut res = Vec::with_capacity(600);
481 let cur_time = Instant::now();
482 let mut nodes = self.nodes.write().unwrap();
483 for (state, state_nodes) in nodes.state_next_scan.iter_mut() {
484 let cmp_time = cur_time - Duration::from_secs(self.get_u64(U64Setting::RescanInterval(*state)));
485 let split_point = cmp::min(cmp::min(600 - res.len(), 60),
486 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx));
487 let mut new_nodes = state_nodes.split_off(split_point);
488 mem::swap(&mut new_nodes, state_nodes);
489 for (_, node) in new_nodes.drain(..) {
493 res.shuffle(&mut thread_rng());