_ Git - dnsseed-rust/blob - src/main.rs

   1 mod printer;
   2 mod reader;
   3 mod peer;
   4 mod bgp_client;
   5 mod timeout_stream;
   6 mod datastore;
   7
   8 use std::env;
   9 use std::collections::HashMap;
  10 use std::sync::{Arc, Mutex};
  11 use std::sync::atomic::{Ordering, AtomicBool};
  12 use std::time::{Duration, Instant};
  13 use std::net::{SocketAddr, ToSocketAddrs};
  14
  15 use bitcoin::blockdata::block::Block;
  16 use bitcoin::blockdata::constants::genesis_block;
  17 use bitcoin::hash_types::{BlockHash};
  18 use bitcoin::network::constants::{Network, ServiceFlags};
  19 use bitcoin::network::message::NetworkMessage;
  20 use bitcoin::network::message_blockdata::{GetHeadersMessage, Inventory};
  21 use bitcoin::util::hash::BitcoinHash;
  22
  23 use printer::{Printer, Stat};
  24 use peer::Peer;
  25 use datastore::{AddressState, Store, U64Setting, RegexSetting};
  26 use timeout_stream::TimeoutStream;
  27 use rand::Rng;
  28 use bgp_client::BGPClient;
  29
  30 use tokio::prelude::*;
  31 use tokio::timer::Delay;
  32
  33 static mut REQUEST_BLOCK: Option<Box<Mutex<Arc<(u64, BlockHash, Block)>>>> = None;
  34 static mut HIGHEST_HEADER: Option<Box<Mutex<(BlockHash, u64)>>> = None;
  35 static mut HEADER_MAP: Option<Box<Mutex<HashMap<BlockHash, u64>>>> = None;
  36 static mut HEIGHT_MAP: Option<Box<Mutex<HashMap<u64, BlockHash>>>> = None;
  37 static mut DATA_STORE: Option<Box<Store>> = None;
  38 static mut PRINTER: Option<Box<Printer>> = None;
  39 static mut TOR_PROXY: Option<SocketAddr> = None;
  40 pub static START_SHUTDOWN: AtomicBool = AtomicBool::new(false);
  41 static SCANNING: AtomicBool = AtomicBool::new(false);
  42
  43
  44 use std::alloc::{GlobalAlloc, Layout, System};
  45 use std::ptr;
  46 use std::sync::atomic::AtomicUsize;
  47
  48 // We keep track of all memory allocated by Rust code, refusing new allocations if it exceeds
  49 // 1.75GB.
  50 //
  51 // Note that while Rust's std, in general, should panic in response to a null allocation, it
  52 // is totally conceivable that some code will instead dereference this null pointer, which
  53 // would violate our guarantees that Rust modules should never crash the entire application.
  54 //
  55 // In the future, as upstream Rust explores a safer allocation API (eg the Alloc API which
  56 // returns Results instead of raw pointers, or redefining the GlobalAlloc API to allow
  57 // panic!()s inside of alloc calls), we should switch to those, however these APIs are
  58 // currently unstable.
  59 const TOTAL_MEM_LIMIT_BYTES: usize = (1024 + 756) * 1024 * 1024;
  60 static TOTAL_MEM_ALLOCD: AtomicUsize = AtomicUsize::new(0);
  61 struct MemoryLimitingAllocator;
  62 unsafe impl GlobalAlloc for MemoryLimitingAllocator {
  63         unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
  64                 let len = layout.size();
  65                 if len > TOTAL_MEM_LIMIT_BYTES {
  66                         return ptr::null_mut();
  67                 }
  68                 if TOTAL_MEM_ALLOCD.fetch_add(len, Ordering::AcqRel) + len > TOTAL_MEM_LIMIT_BYTES {
  69                         TOTAL_MEM_ALLOCD.fetch_sub(len, Ordering::AcqRel);
  70                         return ptr::null_mut();
  71                 }
  72                 System.alloc(layout)
  73         }
  74
  75         unsafe fn dealloc(&self, ptr: *mut u8, layout: Layout) {
  76                 System.dealloc(ptr, layout);
  77                 TOTAL_MEM_ALLOCD.fetch_sub(layout.size(), Ordering::AcqRel);
  78         }
  79 }
  80
  81 #[global_allocator]
  82 static ALLOC: MemoryLimitingAllocator = MemoryLimitingAllocator;
  83
  84
  85 struct PeerState {
  86         request: Arc<(u64, BlockHash, Block)>,
  87         node_services: u64,
  88         msg: (String, bool),
  89         fail_reason: AddressState,
  90         recvd_version: bool,
  91         recvd_verack: bool,
  92         recvd_pong: bool,
  93         recvd_addrs: bool,
  94         recvd_block: bool,
  95         pong_nonce: u64,
  96 }
  97
  98 pub fn scan_node(scan_time: Instant, node: SocketAddr, manual: bool) {
  99         if START_SHUTDOWN.load(Ordering::Relaxed) { return; }
 100         let printer = unsafe { PRINTER.as_ref().unwrap() };
 101         let store = unsafe { DATA_STORE.as_ref().unwrap() };
 102
 103         let mut rng = rand::thread_rng();
 104         let peer_state = Arc::new(Mutex::new(PeerState {
 105                 recvd_version: false,
 106                 recvd_verack: false,
 107                 recvd_pong: false,
 108                 recvd_addrs: false,
 109                 recvd_block: false,
 110                 pong_nonce: rng.gen(),
 111                 node_services: 0,
 112                 fail_reason: AddressState::Timeout,
 113                 msg: (String::new(), false),
 114                 request: Arc::clone(&unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap()),
 115         }));
 116         let err_peer_state = Arc::clone(&peer_state);
 117         let final_peer_state = Arc::clone(&peer_state);
 118
 119         let peer = Delay::new(scan_time).then(move |_| {
 120                 printer.set_stat(Stat::NewConnection);
 121                 let timeout = store.get_u64(U64Setting::RunTimeout);
 122                 Peer::new(node.clone(), unsafe { TOR_PROXY.as_ref().unwrap() }, Duration::from_secs(timeout), printer)
 123         });
 124         tokio::spawn(peer.and_then(move |(mut write, read)| {
 125                 TimeoutStream::new_timeout(read, scan_time + Duration::from_secs(store.get_u64(U64Setting::RunTimeout))).map_err(move |err| {
 126                         match err {
 127                                 bitcoin::consensus::encode::Error::UnrecognizedNetworkCommand(ref msg) => {
 128                                         // If we got here, we hit one of the explicitly disallowed messages indicating
 129                                         // a bogus "node".
 130                                         let mut state_lock = err_peer_state.lock().unwrap();
 131                                         state_lock.msg = (format!("(bad msg type {})", msg), true);
 132                                         state_lock.fail_reason = AddressState::EvilNode;
 133                                 },
 134                                 _ => {},
 135                         }
 136                         ()
 137                 }).for_each(move |msg| {
 138                         let mut state_lock = peer_state.lock().unwrap();
 139                         macro_rules! check_set_flag {
 140                                 ($recvd_flag: ident, $msg: expr) => { {
 141                                         if state_lock.$recvd_flag {
 142                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 143                                                 state_lock.msg = (format!("due to dup {}", $msg), true);
 144                                                 state_lock.$recvd_flag = false;
 145                                                 return future::err(());
 146                                         }
 147                                         state_lock.$recvd_flag = true;
 148                                 } }
 149                         }
 150                         state_lock.fail_reason = AddressState::TimeoutDuringRequest;
 151                         match msg {
 152                                 Some(NetworkMessage::Version(ver)) => {
 153                                         if ver.start_height < 0 || ver.start_height as u64 > state_lock.request.0 + 1008*2 {
 154                                                 state_lock.fail_reason = AddressState::HighBlockCount;
 155                                                 return future::err(());
 156                                         }
 157                                         let safe_ua = ver.user_agent.replace(|c: char| !c.is_ascii() || c < ' ' || c > '~', "");
 158                                         if (ver.start_height as u64) < state_lock.request.0 {
 159                                                 state_lock.msg = (format!("({} < {})", ver.start_height, state_lock.request.0), true);
 160                                                 state_lock.fail_reason = AddressState::LowBlockCount;
 161                                                 return future::err(());
 162                                         }
 163                                         let min_version = store.get_u64(U64Setting::MinProtocolVersion);
 164                                         if (ver.version as u64) < min_version {
 165                                                 state_lock.msg = (format!("({} < {})", ver.version, min_version), true);
 166                                                 state_lock.fail_reason = AddressState::LowVersion;
 167                                                 return future::err(());
 168                                         }
 169                                         if !ver.services.has(ServiceFlags::NETWORK) && !ver.services.has(ServiceFlags::NETWORK_LIMITED) {
 170                                                 state_lock.msg = (format!("({}: services {:x})", safe_ua, ver.services), true);
 171                                                 state_lock.fail_reason = AddressState::NotFullNode;
 172                                                 return future::err(());
 173                                         }
 174                                         if !store.get_regex(RegexSetting::SubverRegex).is_match(&ver.user_agent) {
 175                                                 state_lock.msg = (format!("subver {}", safe_ua), true);
 176                                                 state_lock.fail_reason = AddressState::BadVersion;
 177                                                 return future::err(());
 178                                         }
 179                                         check_set_flag!(recvd_version, "version");
 180                                         state_lock.node_services = ver.services.as_u64();
 181                                         state_lock.msg = (format!("(subver: {})", safe_ua), false);
 182                                         if let Err(_) = write.try_send(NetworkMessage::Verack) {
 183                                                 return future::err(());
 184                                         }
 185                                 },
 186                                 Some(NetworkMessage::Verack) => {
 187                                         check_set_flag!(recvd_verack, "verack");
 188                                         if let Err(_) = write.try_send(NetworkMessage::Ping(state_lock.pong_nonce)) {
 189                                                 return future::err(());
 190                                         }
 191                                 },
 192                                 Some(NetworkMessage::Ping(v)) => {
 193                                         if let Err(_) = write.try_send(NetworkMessage::Pong(v)) {
 194                                                 return future::err(())
 195                                         }
 196                                 },
 197                                 Some(NetworkMessage::Pong(v)) => {
 198                                         if v != state_lock.pong_nonce {
 199                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 200                                                 state_lock.msg = ("due to invalid pong nonce".to_string(), true);
 201                                                 return future::err(());
 202                                         }
 203                                         check_set_flag!(recvd_pong, "pong");
 204                                         if let Err(_) = write.try_send(NetworkMessage::GetAddr) {
 205                                                 return future::err(());
 206                                         }
 207                                 },
 208                                 Some(NetworkMessage::Addr(addrs)) => {
 209                                         if addrs.len() > 1000 {
 210                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 211                                                 state_lock.msg = (format!("due to oversized addr: {}", addrs.len()), true);
 212                                                 state_lock.recvd_addrs = false;
 213                                                 return future::err(());
 214                                         }
 215                                         if addrs.len() > 10 {
 216                                                 if !state_lock.recvd_addrs {
 217                                                         if let Err(_) = write.try_send(NetworkMessage::GetData(vec![Inventory::WitnessBlock(state_lock.request.1)])) {
 218                                                                 return future::err(());
 219                                                         }
 220                                                 }
 221                                                 state_lock.recvd_addrs = true;
 222                                         }
 223                                         unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
 224                                 },
 225                                 Some(NetworkMessage::Block(block)) => {
 226                                         if block != state_lock.request.2 {
 227                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 228                                                 state_lock.msg = ("due to bad block".to_string(), true);
 229                                                 return future::err(());
 230                                         }
 231                                         check_set_flag!(recvd_block, "block");
 232                                         return future::err(());
 233                                 },
 234                                 Some(NetworkMessage::Inv(invs)) => {
 235                                         for inv in invs {
 236                                                 match inv {
 237                                                         Inventory::Transaction(_) | Inventory::WitnessTransaction(_) => {
 238                                                                 state_lock.fail_reason = AddressState::EvilNode;
 239                                                                 state_lock.msg = ("due to unrequested inv tx".to_string(), true);
 240                                                                 return future::err(());
 241                                                         }
 242                                                         _ => {},
 243                                                 }
 244                                         }
 245                                 },
 246                                 Some(NetworkMessage::Tx(_)) => {
 247                                         state_lock.fail_reason = AddressState::EvilNode;
 248                                         state_lock.msg = ("due to unrequested transaction".to_string(), true);
 249                                         return future::err(());
 250                                 },
 251                                 _ => {},
 252                         }
 253                         future::ok(())
 254                 }).then(|_| {
 255                         future::err(())
 256                 })
 257         }).then(move |_: Result<(), ()>| {
 258                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 259                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 260                 printer.set_stat(Stat::ConnectionClosed);
 261
 262                 let mut state_lock = final_peer_state.lock().unwrap();
 263                 if state_lock.recvd_version && state_lock.recvd_verack && state_lock.recvd_pong &&
 264                                 state_lock.recvd_addrs && state_lock.recvd_block {
 265                         let old_state = store.set_node_state(node, AddressState::Good, state_lock.node_services);
 266                         if manual || (old_state != AddressState::Good && state_lock.msg.0 != "") {
 267                                 printer.add_line(format!("Updating {} from {} to Good {}", node, old_state.to_str(), &state_lock.msg.0), state_lock.msg.1);
 268                         }
 269                 } else {
 270                         assert!(state_lock.fail_reason != AddressState::Good);
 271                         if state_lock.fail_reason == AddressState::TimeoutDuringRequest && state_lock.recvd_version && state_lock.recvd_verack {
 272                                 if !state_lock.recvd_pong {
 273                                         state_lock.fail_reason = AddressState::TimeoutAwaitingPong;
 274                                 } else if !state_lock.recvd_addrs {
 275                                         state_lock.fail_reason = AddressState::TimeoutAwaitingAddr;
 276                                 } else if !state_lock.recvd_block {
 277                                         state_lock.fail_reason = AddressState::TimeoutAwaitingBlock;
 278                                 }
 279                         }
 280                         let old_state = store.set_node_state(node, state_lock.fail_reason, 0);
 281                         if (manual || old_state != state_lock.fail_reason) && state_lock.fail_reason == AddressState::TimeoutDuringRequest {
 282                                 printer.add_line(format!("Updating {} from {} to Timeout During Request (ver: {}, vack: {})",
 283                                         node, old_state.to_str(), state_lock.recvd_version, state_lock.recvd_verack), true);
 284                         } else if manual || (old_state != state_lock.fail_reason && state_lock.msg.0 != "" && state_lock.msg.1) {
 285                                 printer.add_line(format!("Updating {} from {} to {} {}", node, old_state.to_str(), state_lock.fail_reason.to_str(), &state_lock.msg.0), state_lock.msg.1);
 286                         }
 287                 }
 288                 future::ok(())
 289         }));
 290 }
 291
 292 fn poll_dnsseeds(bgp_client: Arc<BGPClient>) {
 293         tokio::spawn(future::lazy(|| {
 294                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 295                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 296
 297                 let mut new_addrs = 0;
 298                 for seed in ["seed.bitcoin.sipa.be", "dnsseed.bitcoin.dashjr.org", "seed.bitcoinstats.com", "seed.bitcoin.jonasschnelli.ch", "seed.btc.petertodd.org", "seed.bitcoin.sprovoost.nl", "dnsseed.emzy.de"].iter() {
 299                         new_addrs += store.add_fresh_addrs((*seed, 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
 300                         new_addrs += store.add_fresh_addrs((("x9.".to_string() + seed).as_str(), 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
 301                 }
 302                 printer.add_line(format!("Added {} new addresses from other DNS seeds", new_addrs), false);
 303                 Delay::new(Instant::now() + Duration::from_secs(60)).then(|_| {
 304                         let store = unsafe { DATA_STORE.as_ref().unwrap() };
 305                         let dns_future = store.write_dns(Arc::clone(&bgp_client));
 306                         store.save_data().join(dns_future).then(|_| {
 307                                 if !START_SHUTDOWN.load(Ordering::Relaxed) {
 308                                         poll_dnsseeds(bgp_client);
 309                                 } else {
 310                                         bgp_client.disconnect();
 311                                 }
 312                                 future::ok(())
 313                         })
 314                 })
 315         }));
 316 }
 317
 318 fn scan_net() {
 319         tokio::spawn(future::lazy(|| {
 320                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 321                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 322
 323                 let start_time = Instant::now();
 324                 let mut scan_nodes = store.get_next_scan_nodes();
 325                 printer.add_line(format!("Got {} addresses to scan", scan_nodes.len()), false);
 326                 if !scan_nodes.is_empty() {
 327                         let per_iter_time = Duration::from_millis(datastore::SECS_PER_SCAN_RESULTS * 1000 / scan_nodes.len() as u64);
 328                         let mut iter_time = start_time;
 329
 330                         for node in scan_nodes.drain(..) {
 331                                 scan_node(iter_time, node, false);
 332                                 iter_time += per_iter_time;
 333                         }
 334                 }
 335                 Delay::new(start_time + Duration::from_secs(datastore::SECS_PER_SCAN_RESULTS)).then(move |_| {
 336                         if !START_SHUTDOWN.load(Ordering::Relaxed) {
 337                                 scan_net();
 338                         }
 339                         future::ok(())
 340                 })
 341         }));
 342 }
 343
 344 fn make_trusted_conn(trusted_sockaddr: SocketAddr, bgp_client: Arc<BGPClient>) {
 345         let printer = unsafe { PRINTER.as_ref().unwrap() };
 346         let trusted_peer = Peer::new(trusted_sockaddr.clone(), unsafe { TOR_PROXY.as_ref().unwrap() }, Duration::from_secs(600), printer);
 347         let bgp_reload = Arc::clone(&bgp_client);
 348         tokio::spawn(trusted_peer.and_then(move |(mut trusted_write, trusted_read)| {
 349                 printer.add_line("Connected to local peer".to_string(), false);
 350                 let mut starting_height = 0;
 351                 TimeoutStream::new_persistent(trusted_read, Duration::from_secs(600)).map_err(|_| { () }).for_each(move |msg| {
 352                         if START_SHUTDOWN.load(Ordering::Relaxed) {
 353                                 return future::err(());
 354                         }
 355                         match msg {
 356                                 Some(NetworkMessage::Version(ver)) => {
 357                                         if let Err(_) = trusted_write.try_send(NetworkMessage::Verack) {
 358                                                 return future::err(())
 359                                         }
 360                                         starting_height = ver.start_height;
 361                                 },
 362                                 Some(NetworkMessage::Verack) => {
 363                                         if let Err(_) = trusted_write.try_send(NetworkMessage::SendHeaders) {
 364                                                 return future::err(());
 365                                         }
 366                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetHeaders(GetHeadersMessage {
 367                                                 version: 70015,
 368                                                 locator_hashes: vec![unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().0.clone()],
 369                                                 stop_hash: Default::default(),
 370                                         })) {
 371                                                 return future::err(());
 372                                         }
 373                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetAddr) {
 374                                                 return future::err(());
 375                                         }
 376                                 },
 377                                 Some(NetworkMessage::Addr(addrs)) => {
 378                                         unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
 379                                 },
 380                                 Some(NetworkMessage::Headers(headers)) => {
 381                                         if headers.is_empty() {
 382                                                 return future::ok(());
 383                                         }
 384                                         let mut header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
 385                                         let mut height_map = unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap();
 386
 387                                         if let Some(height) = header_map.get(&headers[0].prev_blockhash).cloned() {
 388                                                 for i in 0..headers.len() {
 389                                                         let hash = headers[i].bitcoin_hash();
 390                                                         if i < headers.len() - 1 && headers[i + 1].prev_blockhash != hash {
 391                                                                 return future::err(());
 392                                                         }
 393                                                         header_map.insert(headers[i].bitcoin_hash(), height + 1 + (i as u64));
 394                                                         height_map.insert(height + 1 + (i as u64), headers[i].bitcoin_hash());
 395                                                 }
 396
 397                                                 let top_height = height + headers.len() as u64;
 398                                                 *unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap()
 399                                                         = (headers.last().unwrap().bitcoin_hash(), top_height);
 400                                                 printer.set_stat(printer::Stat::HeaderCount(top_height));
 401
 402                                                 if top_height >= starting_height as u64 {
 403                                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetData(vec![
 404                                                                         Inventory::WitnessBlock(height_map.get(&(top_height - 216)).unwrap().clone())
 405                                                         ])) {
 406                                                                 return future::err(());
 407                                                         }
 408                                                 }
 409                                         } else {
 410                                                 // Wat? Lets start again...
 411                                                 printer.add_line("Got unconnected headers message from local trusted peer".to_string(), true);
 412                                         }
 413                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetHeaders(GetHeadersMessage {
 414                                                 version: 70015,
 415                                                 locator_hashes: vec![unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().0.clone()],
 416                                                 stop_hash: Default::default(),
 417                                         })) {
 418                                                 return future::err(())
 419                                         }
 420                                 },
 421                                 Some(NetworkMessage::Block(block)) => {
 422                                         let hash = block.header.bitcoin_hash();
 423                                         let header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
 424                                         let height = *header_map.get(&hash).expect("Got loose block from trusted peer we coulnd't have requested");
 425                                         if height == unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().1 - 216 {
 426                                                 *unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap() = Arc::new((height, hash, block));
 427                                                 if !SCANNING.swap(true, Ordering::SeqCst) {
 428                                                         scan_net();
 429                                                         poll_dnsseeds(Arc::clone(&bgp_client));
 430                                                 }
 431                                         }
 432                                 },
 433                                 Some(NetworkMessage::Ping(v)) => {
 434                                         if let Err(_) = trusted_write.try_send(NetworkMessage::Pong(v)) {
 435                                                 return future::err(())
 436                                         }
 437                                 },
 438                                 _ => {},
 439                         }
 440                         future::ok(())
 441                 }).then(|_| {
 442                         future::err(())
 443                 })
 444         }).then(move |_: Result<(), ()>| {
 445                 if !START_SHUTDOWN.load(Ordering::Relaxed) {
 446                         printer.add_line("Lost connection from trusted peer".to_string(), true);
 447                         make_trusted_conn(trusted_sockaddr, bgp_reload);
 448                 }
 449                 future::ok(())
 450         }));
 451 }
 452
 453 fn main() {
 454         if env::args().len() != 5 {
 455                 println!("USAGE: dnsseed-rust datastore localPeerAddress tor_proxy_addr bgp_peer");
 456                 return;
 457         }
 458
 459         unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
 460         unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
 461         unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap().insert(genesis_block(Network::Bitcoin).bitcoin_hash(), 0);
 462         unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap().insert(0, genesis_block(Network::Bitcoin).bitcoin_hash());
 463         unsafe { HIGHEST_HEADER = Some(Box::new(Mutex::new((genesis_block(Network::Bitcoin).bitcoin_hash(), 0)))) };
 464         unsafe { REQUEST_BLOCK = Some(Box::new(Mutex::new(Arc::new((0, genesis_block(Network::Bitcoin).bitcoin_hash(), genesis_block(Network::Bitcoin)))))) };
 465
 466         let trt = tokio::runtime::Builder::new()
 467                 .blocking_threads(2).core_threads(num_cpus::get().max(1) + 1)
 468                 .build().unwrap();
 469
 470         let _ = trt.block_on_all(future::lazy(|| {
 471                 let mut args = env::args();
 472                 args.next();
 473                 let path = args.next().unwrap();
 474                 let trusted_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 475
 476                 let tor_socks5_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 477                 unsafe { TOR_PROXY = Some(tor_socks5_sockaddr); }
 478
 479                 let bgp_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 480
 481                 Store::new(path).and_then(move |store| {
 482                         unsafe { DATA_STORE = Some(Box::new(store)) };
 483                         let store = unsafe { DATA_STORE.as_ref().unwrap() };
 484                         unsafe { PRINTER = Some(Box::new(Printer::new(store))) };
 485
 486                         let bgp_client = BGPClient::new(bgp_sockaddr, Duration::from_secs(60), unsafe { PRINTER.as_ref().unwrap() });
 487                         make_trusted_conn(trusted_sockaddr, Arc::clone(&bgp_client));
 488
 489                         reader::read(store, unsafe { PRINTER.as_ref().unwrap() }, bgp_client);
 490
 491                         future::ok(())
 492                 }).or_else(|_| {
 493                         future::err(())
 494                 })
 495         }));
 496
 497         tokio::run(future::lazy(|| {
 498                 unsafe { DATA_STORE.as_ref().unwrap() }.save_data()
 499         }));
 500 }