2 use std::collections::{HashSet, HashMap, hash_map};
3 use std::sync::{Arc, RwLock};
4 use std::net::{IpAddr, Ipv4Addr, Ipv6Addr, 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 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
130 good_node_services: Vec<HashSet<SocketAddr>>,
131 nodes_to_state: HashMap<SocketAddr, Node>,
132 state_next_scan: Vec<Vec<(Instant, SocketAddr)>>,
134 struct NodesMutRef<'a> {
135 good_node_services: &'a mut Vec<HashSet<SocketAddr>>,
136 nodes_to_state: &'a mut HashMap<SocketAddr, Node>,
137 state_next_scan: &'a mut Vec<Vec<(Instant, SocketAddr)>>,
141 fn borrow_mut<'a>(&'a mut self) -> NodesMutRef<'a> {
143 good_node_services: &mut self.good_node_services,
144 nodes_to_state: &mut self.nodes_to_state,
145 state_next_scan: &mut self.state_next_scan,
151 u64_settings: RwLock<HashMap<U64Setting, u64>>,
152 subver_regex: RwLock<Arc<Regex>>,
153 nodes: RwLock<Nodes>,
158 pub fn new(store: String) -> impl Future<Item=Store, Error=()> {
159 let settings_future = File::open(store.clone() + "/settings").and_then(|f| {
160 let mut l = BufReader::new(f).lines();
161 macro_rules! try_read {
162 ($lines: expr, $ty: ty) => { {
163 match $lines.next() {
164 Some(line) => match line {
165 Ok(line) => match line.parse::<$ty>() {
167 Err(e) => return future::err(std::io::Error::new(std::io::ErrorKind::InvalidData, e)),
169 Err(e) => return future::err(e),
171 None => return future::err(std::io::Error::new(std::io::ErrorKind::UnexpectedEof, "")),
175 let mut u64s = HashMap::with_capacity(AddressState::get_count() as usize + 4);
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::RunTimeout, 120);
198 u64s.insert(U64Setting::WasGoodTimeout, 21600);
199 u64s.insert(U64Setting::RescanInterval(AddressState::Untested), 1);
200 u64s.insert(U64Setting::RescanInterval(AddressState::LowBlockCount), 3600);
201 u64s.insert(U64Setting::RescanInterval(AddressState::HighBlockCount), 7200);
202 u64s.insert(U64Setting::RescanInterval(AddressState::LowVersion), 21600);
203 u64s.insert(U64Setting::RescanInterval(AddressState::BadVersion), 21600);
204 u64s.insert(U64Setting::RescanInterval(AddressState::NotFullNode), 86400);
205 u64s.insert(U64Setting::RescanInterval(AddressState::ProtocolViolation), 86400);
206 u64s.insert(U64Setting::RescanInterval(AddressState::Timeout), 86400);
207 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest), 21600);
208 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingPong), 3600);
209 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr), 1800);
210 u64s.insert(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock), 3600);
211 u64s.insert(U64Setting::RescanInterval(AddressState::Good), 1800);
212 u64s.insert(U64Setting::RescanInterval(AddressState::WasGood), 1800);
213 u64s.insert(U64Setting::RescanInterval(AddressState::EvilNode), 315360000);
214 u64s.insert(U64Setting::MinProtocolVersion, 70002);
215 future::ok((u64s, Regex::new(".*").unwrap()))
218 macro_rules! nodes_uninitd {
220 let mut state_vecs = Vec::with_capacity(AddressState::get_count() as usize);
221 for _ in 0..AddressState::get_count() {
222 state_vecs.push(Vec::new());
224 let mut good_node_services = Vec::with_capacity(64);
226 good_node_services.push(HashSet::new());
230 nodes_to_state: HashMap::new(),
231 state_next_scan: state_vecs,
236 let nodes_future = File::open(store.clone() + "/nodes").and_then(|f| {
237 let mut res = nodes_uninitd!();
238 let l = BufReader::new(f).lines();
240 let line = match line_res {
242 Err(_) => return future::ok(res),
244 let mut line_iter = line.split(',');
245 macro_rules! try_read {
246 ($lines: expr, $ty: ty) => { {
247 match $lines.next() {
248 Some(line) => match line.parse::<$ty>() {
250 Err(_) => return future::ok(res),
252 None => return future::ok(res),
256 let sockaddr = try_read!(line_iter, SocketAddr);
257 let state = try_read!(line_iter, u8);
258 let last_services = try_read!(line_iter, u64);
260 state: match AddressState::from_num(state) {
262 None => return future::ok(res),
265 last_update: Instant::now(),
266 last_good: Instant::now(),
268 if node.state == AddressState::Good {
270 if node.last_services & (1 << i) != 0 {
271 res.good_node_services[i].insert(sockaddr);
275 res.state_next_scan[node.state.to_num() as usize].push((Instant::now(), sockaddr));
276 res.nodes_to_state.insert(sockaddr, node);
279 }).or_else(|_| -> future::FutureResult<Nodes, ()> {
280 future::ok(nodes_uninitd!())
282 settings_future.join(nodes_future).and_then(move |((u64_settings, regex), nodes)| {
284 u64_settings: RwLock::new(u64_settings),
285 subver_regex: RwLock::new(Arc::new(regex)),
286 nodes: RwLock::new(nodes),
292 pub fn get_u64(&self, setting: U64Setting) -> u64 {
293 *self.u64_settings.read().unwrap().get(&setting).unwrap()
296 pub fn set_u64(&self, setting: U64Setting, value: u64) {
297 *self.u64_settings.write().unwrap().get_mut(&setting).unwrap() = value;
300 pub fn get_node_count(&self, state: AddressState) -> usize {
301 self.nodes.read().unwrap().state_next_scan[state.to_num() as usize].len()
304 pub fn get_regex(&self, _setting: RegexSetting) -> Arc<Regex> {
305 Arc::clone(&*self.subver_regex.read().unwrap())
308 pub fn set_regex(&self, _setting: RegexSetting, value: Regex) {
309 *self.subver_regex.write().unwrap() = Arc::new(value);
312 pub fn add_fresh_addrs<I: Iterator<Item=SocketAddr>>(&self, addresses: I) -> u64 {
314 let mut nodes = self.nodes.write().unwrap();
315 let cur_time = Instant::now();
316 for addr in addresses {
317 match nodes.nodes_to_state.entry(addr.clone()) {
318 hash_map::Entry::Vacant(e) => {
320 state: AddressState::Untested,
322 last_update: cur_time,
325 nodes.state_next_scan[AddressState::Untested.to_num() as usize].push((cur_time, addr));
328 hash_map::Entry::Occupied(_) => {},
334 pub fn add_fresh_nodes(&self, addresses: &Vec<(u32, Address)>) {
335 self.add_fresh_addrs(addresses.iter().filter_map(|(_, addr)| {
336 match addr.socket_addr() {
337 Ok(socketaddr) => Some(socketaddr),
338 Err(_) => None, // TODO: Handle onions
343 pub fn set_node_state(&self, addr: SocketAddr, state: AddressState, services: u64) -> AddressState {
344 let mut nodes_lock = self.nodes.write().unwrap();
345 let nodes = nodes_lock.borrow_mut();
346 let now = Instant::now();
348 let state_ref = nodes.nodes_to_state.entry(addr).or_insert(Node {
349 state: AddressState::Untested,
354 let ret = state_ref.state;
355 if (state_ref.state == AddressState::Good || state_ref.state == AddressState::WasGood)
356 && state != AddressState::Good
357 && state_ref.last_good >= now - Duration::from_secs(self.get_u64(U64Setting::WasGoodTimeout)) {
358 state_ref.state = AddressState::WasGood;
360 if state_ref.last_services & (1 << i) != 0 {
361 nodes.good_node_services[i].remove(&addr);
364 state_ref.last_services = 0;
365 nodes.state_next_scan[AddressState::WasGood.to_num() as usize].push((now, addr));
367 state_ref.state = state;
368 if state == AddressState::Good {
370 if services & (1 << i) != 0 && state_ref.last_services & (1 << i) == 0 {
371 nodes.good_node_services[i].insert(addr);
372 } else if services & (1 << i) == 0 && state_ref.last_services & (1 << i) != 0 {
373 nodes.good_node_services[i].remove(&addr);
376 state_ref.last_services = services;
377 state_ref.last_good = now;
379 nodes.state_next_scan[state.to_num() as usize].push((now, addr));
381 state_ref.last_update = now;
385 pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
386 let settings_file = self.store.clone() + "/settings";
387 let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
388 let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
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, bgp_client: Arc<BGPClient>) -> 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 tor_set: Vec<Ipv6Addr> = Vec::new();
448 let mut v6_set: Vec<Ipv6Addr> = Vec::new();
449 let mut v4_set: Vec<Ipv4Addr> = Vec::new();
450 macro_rules! add_addr { ($addr: expr) => {
452 IpAddr::V4(v4addr) => v4_set.push(v4addr),
453 IpAddr::V6(v6addr) if v6addr.octets()[..6] == [0xFD,0x87,0xD8,0x7E,0xEB,0x43][..] => tor_set.push(v6addr),
454 IpAddr::V6(v6addr) => v6_set.push(v6addr),
458 let nodes = self.nodes.read().unwrap();
459 if i.count_ones() == 1 {
461 if i & (1 << j) != 0 {
462 let set_ref = &nodes.good_node_services[j];
463 for a in set_ref.iter().filter(|e| e.port() == 8333) {
469 } else if i.count_ones() == 2 {
470 let mut first_set = None;
471 let mut second_set = None;
473 if i & (1 << j) != 0 {
474 if first_set == None {
475 first_set = Some(&nodes.good_node_services[j]);
477 second_set = Some(&nodes.good_node_services[j]);
482 for a in first_set.unwrap().intersection(&second_set.unwrap()).filter(|e| e.port() == 8333) {
486 //TODO: Could optimize this one a bit
487 let mut intersection;
488 let mut intersection_set_ref = None;
490 if i & (1 << j) != 0 {
491 if intersection_set_ref == None {
492 intersection_set_ref = Some(&nodes.good_node_services[j]);
494 let new_intersection = intersection_set_ref.unwrap()
495 .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
496 intersection = Some(new_intersection);
497 intersection_set_ref = Some(intersection.as_ref().unwrap());
501 for a in intersection_set_ref.unwrap().iter().filter(|e| e.port() == 8333) {
506 let mut asn_set = HashSet::with_capacity(cmp::max(v4_set.len(), v6_set.len()));
508 for a in v4_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V4(**a)))).choose_multiple(&mut rng, 21) {
509 dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
513 for a in v6_set.iter().filter(|a| asn_set.insert(bgp_client.get_asn(IpAddr::V6(**a)))).choose_multiple(&mut rng, 10) {
514 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
516 for a in tor_set.iter().choose_multiple(&mut rng, 2) {
517 dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
521 write_all(f, dns_buff)
522 }).and_then(|(mut f, _)| {
525 tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
526 }).then(|_| { future::ok(()) })
529 pub fn get_next_scan_nodes(&self) -> Vec<SocketAddr> {
530 let mut res = Vec::with_capacity(128);
531 let cur_time = Instant::now();
534 let mut nodes = self.nodes.write().unwrap();
535 for (idx, state_nodes) in nodes.state_next_scan.iter_mut().enumerate() {
536 let rescan_interval = cmp::max(self.get_u64(U64Setting::RescanInterval(AddressState::from_num(idx as u8).unwrap())), 1);
537 let cmp_time = cur_time - Duration::from_secs(rescan_interval);
538 let split_point = cmp::min(SECS_PER_SCAN_RESULTS * state_nodes.len() as u64 / rescan_interval,
539 state_nodes.binary_search_by(|a| a.0.cmp(&cmp_time)).unwrap_or_else(|idx| idx) as u64);
540 let mut new_nodes = state_nodes.split_off(split_point as usize);
541 mem::swap(&mut new_nodes, state_nodes);
542 for (_, node) in new_nodes.drain(..) {
547 res.shuffle(&mut thread_rng());