_ 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         pong_nonce: u64,
  88         node_services: u64,
  89         msg: (String, bool),
  90         fail_reason: AddressState,
  91         recvd_version: bool,
  92         recvd_verack: bool,
  93         recvd_pong: bool,
  94         recvd_addrs: bool,
  95         recvd_block: bool,
  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)))
 126                         .map_err(|_| ()).for_each(move |msg| {
 127                         let mut state_lock = peer_state.lock().unwrap();
 128                         macro_rules! check_set_flag {
 129                                 ($recvd_flag: ident, $msg: expr) => { {
 130                                         if state_lock.$recvd_flag {
 131                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 132                                                 state_lock.msg = (format!("due to dup {}", $msg), true);
 133                                                 state_lock.$recvd_flag = false;
 134                                                 return future::err(());
 135                                         }
 136                                         state_lock.$recvd_flag = true;
 137                                 } }
 138                         }
 139                         state_lock.fail_reason = AddressState::TimeoutDuringRequest;
 140                         match msg {
 141                                 Some(NetworkMessage::Version(ver)) => {
 142                                         if ver.start_height < 0 || ver.start_height as u64 > state_lock.request.0 + 1008*2 {
 143                                                 state_lock.fail_reason = AddressState::HighBlockCount;
 144                                                 return future::err(());
 145                                         }
 146                                         let safe_ua = ver.user_agent.replace(|c: char| !c.is_ascii() || c < ' ' || c > '~', "");
 147                                         if (ver.start_height as u64) < state_lock.request.0 {
 148                                                 state_lock.msg = (format!("({} < {})", ver.start_height, state_lock.request.0), true);
 149                                                 state_lock.fail_reason = AddressState::LowBlockCount;
 150                                                 return future::err(());
 151                                         }
 152                                         let min_version = store.get_u64(U64Setting::MinProtocolVersion);
 153                                         if (ver.version as u64) < min_version {
 154                                                 state_lock.msg = (format!("({} < {})", ver.version, min_version), true);
 155                                                 state_lock.fail_reason = AddressState::LowVersion;
 156                                                 return future::err(());
 157                                         }
 158                                         if !ver.services.has(ServiceFlags::NETWORK) && !ver.services.has(ServiceFlags::NETWORK_LIMITED) {
 159                                                 state_lock.msg = (format!("({}: services {:x})", safe_ua, ver.services), true);
 160                                                 state_lock.fail_reason = AddressState::NotFullNode;
 161                                                 return future::err(());
 162                                         }
 163                                         if !store.get_regex(RegexSetting::SubverRegex).is_match(&ver.user_agent) {
 164                                                 state_lock.msg = (format!("subver {}", safe_ua), true);
 165                                                 state_lock.fail_reason = AddressState::BadVersion;
 166                                                 return future::err(());
 167                                         }
 168                                         check_set_flag!(recvd_version, "version");
 169                                         state_lock.node_services = ver.services.as_u64();
 170                                         state_lock.msg = (format!("(subver: {})", safe_ua), false);
 171                                         if let Err(_) = write.try_send(NetworkMessage::SendAddrV2) {
 172                                                 return future::err(());
 173                                         }
 174                                         if let Err(_) = write.try_send(NetworkMessage::Verack) {
 175                                                 return future::err(());
 176                                         }
 177                                 },
 178                                 Some(NetworkMessage::Verack) => {
 179                                         check_set_flag!(recvd_verack, "verack");
 180                                         if let Err(_) = write.try_send(NetworkMessage::Ping(state_lock.pong_nonce)) {
 181                                                 return future::err(());
 182                                         }
 183                                 },
 184                                 Some(NetworkMessage::Ping(v)) => {
 185                                         if let Err(_) = write.try_send(NetworkMessage::Pong(v)) {
 186                                                 return future::err(())
 187                                         }
 188                                 },
 189                                 Some(NetworkMessage::Pong(v)) => {
 190                                         if v != state_lock.pong_nonce {
 191                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 192                                                 state_lock.msg = ("due to invalid pong nonce".to_string(), true);
 193                                                 return future::err(());
 194                                         }
 195                                         check_set_flag!(recvd_pong, "pong");
 196                                         if let Err(_) = write.try_send(NetworkMessage::GetAddr) {
 197                                                 return future::err(());
 198                                         }
 199                                 },
 200                                 Some(NetworkMessage::Addr(addrs)) => {
 201                                         if addrs.len() > 1000 {
 202                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 203                                                 state_lock.msg = (format!("due to oversized addr: {}", addrs.len()), true);
 204                                                 state_lock.recvd_addrs = false;
 205                                                 return future::err(());
 206                                         }
 207                                         if addrs.len() > 10 {
 208                                                 if !state_lock.recvd_addrs {
 209                                                         if let Err(_) = write.try_send(NetworkMessage::GetData(vec![Inventory::WitnessBlock(state_lock.request.1)])) {
 210                                                                 return future::err(());
 211                                                         }
 212                                                 }
 213                                                 state_lock.recvd_addrs = true;
 214                                         }
 215                                         unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
 216                                 },
 217                                 Some(NetworkMessage::AddrV2(addrs)) => {
 218                                         if addrs.len() > 1000 {
 219                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 220                                                 state_lock.msg = (format!("due to oversized addr: {}", addrs.len()), true);
 221                                                 state_lock.recvd_addrs = false;
 222                                                 return future::err(());
 223                                         }
 224                                         if addrs.len() > 10 {
 225                                                 if !state_lock.recvd_addrs {
 226                                                         if let Err(_) = write.try_send(NetworkMessage::GetData(vec![Inventory::WitnessBlock(state_lock.request.1)])) {
 227                                                                 return future::err(());
 228                                                         }
 229                                                 }
 230                                                 state_lock.recvd_addrs = true;
 231                                         }
 232                                         unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes_v2(&addrs);
 233                                 },
 234                                 Some(NetworkMessage::Block(block)) => {
 235                                         if block != state_lock.request.2 {
 236                                                 state_lock.fail_reason = AddressState::ProtocolViolation;
 237                                                 state_lock.msg = ("due to bad block".to_string(), true);
 238                                                 return future::err(());
 239                                         }
 240                                         check_set_flag!(recvd_block, "block");
 241                                         return future::err(());
 242                                 },
 243                                 Some(NetworkMessage::Inv(invs)) => {
 244                                         for inv in invs {
 245                                                 match inv {
 246                                                         Inventory::Transaction(_) | Inventory::WitnessTransaction(_) => {
 247                                                                 state_lock.fail_reason = AddressState::EvilNode;
 248                                                                 state_lock.msg = ("due to unrequested inv tx".to_string(), true);
 249                                                                 return future::err(());
 250                                                         }
 251                                                         _ => {},
 252                                                 }
 253                                         }
 254                                 },
 255                                 Some(NetworkMessage::Tx(_)) => {
 256                                         state_lock.fail_reason = AddressState::EvilNode;
 257                                         state_lock.msg = ("due to unrequested transaction".to_string(), true);
 258                                         return future::err(());
 259                                 },
 260                                 Some(NetworkMessage::Unknown { command, .. }) => {
 261                                         if command.as_ref() == "gnop" {
 262                                                 let mut state_lock = err_peer_state.lock().unwrap();
 263                                                 state_lock.msg = (format!("(bad msg type {})", command), true);
 264                                                 state_lock.fail_reason = AddressState::EvilNode;
 265                                                 return future::err(());
 266                                         }
 267                                 },
 268                                 _ => {},
 269                         }
 270                         future::ok(())
 271                 }).then(|_| {
 272                         future::err(())
 273                 })
 274         }).then(move |_: Result<(), ()>| {
 275                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 276                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 277                 printer.set_stat(Stat::ConnectionClosed);
 278
 279                 let mut state_lock = final_peer_state.lock().unwrap();
 280                 if state_lock.recvd_version && state_lock.recvd_verack && state_lock.recvd_pong &&
 281                                 state_lock.recvd_addrs && state_lock.recvd_block {
 282                         let old_state = store.set_node_state(node, AddressState::Good, state_lock.node_services);
 283                         if manual || (old_state != AddressState::Good && state_lock.msg.0 != "") {
 284                                 printer.add_line(format!("Updating {} from {} to Good {}", node, old_state.to_str(), &state_lock.msg.0), state_lock.msg.1);
 285                         }
 286                 } else {
 287                         assert!(state_lock.fail_reason != AddressState::Good);
 288                         if state_lock.fail_reason == AddressState::TimeoutDuringRequest && state_lock.recvd_version && state_lock.recvd_verack {
 289                                 if !state_lock.recvd_pong {
 290                                         state_lock.fail_reason = AddressState::TimeoutAwaitingPong;
 291                                 } else if !state_lock.recvd_addrs {
 292                                         state_lock.fail_reason = AddressState::TimeoutAwaitingAddr;
 293                                 } else if !state_lock.recvd_block {
 294                                         state_lock.fail_reason = AddressState::TimeoutAwaitingBlock;
 295                                 }
 296                         }
 297                         let old_state = store.set_node_state(node, state_lock.fail_reason, 0);
 298                         if (manual || old_state != state_lock.fail_reason) && state_lock.fail_reason == AddressState::TimeoutDuringRequest {
 299                                 printer.add_line(format!("Updating {} from {} to Timeout During Request (ver: {}, vack: {})",
 300                                         node, old_state.to_str(), state_lock.recvd_version, state_lock.recvd_verack), true);
 301                         } else if manual || (old_state != state_lock.fail_reason && state_lock.msg.0 != "" && state_lock.msg.1) {
 302                                 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);
 303                         }
 304                 }
 305                 future::ok(())
 306         }));
 307 }
 308
 309 fn poll_dnsseeds(bgp_client: Arc<BGPClient>) {
 310         tokio::spawn(future::lazy(|| {
 311                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 312                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 313
 314                 let mut new_addrs = 0;
 315                 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() {
 316                         new_addrs += store.add_fresh_addrs((*seed, 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
 317                         new_addrs += store.add_fresh_addrs((("x9.".to_string() + seed).as_str(), 8333u16).to_socket_addrs().unwrap_or(Vec::new().into_iter()));
 318                 }
 319                 printer.add_line(format!("Added {} new addresses from other DNS seeds", new_addrs), false);
 320                 Delay::new(Instant::now() + Duration::from_secs(60)).then(|_| {
 321                         let store = unsafe { DATA_STORE.as_ref().unwrap() };
 322                         let dns_future = store.write_dns(Arc::clone(&bgp_client));
 323                         store.save_data().join(dns_future).then(|_| {
 324                                 if !START_SHUTDOWN.load(Ordering::Relaxed) {
 325                                         poll_dnsseeds(bgp_client);
 326                                 } else {
 327                                         bgp_client.disconnect();
 328                                 }
 329                                 future::ok(())
 330                         })
 331                 })
 332         }));
 333 }
 334
 335 fn scan_net() {
 336         tokio::spawn(future::lazy(|| {
 337                 let printer = unsafe { PRINTER.as_ref().unwrap() };
 338                 let store = unsafe { DATA_STORE.as_ref().unwrap() };
 339
 340                 let start_time = Instant::now();
 341                 let mut scan_nodes = store.get_next_scan_nodes();
 342                 printer.add_line(format!("Got {} addresses to scan", scan_nodes.len()), false);
 343                 if !scan_nodes.is_empty() {
 344                         let per_iter_time = Duration::from_millis(datastore::SECS_PER_SCAN_RESULTS * 1000 / scan_nodes.len() as u64);
 345                         let mut iter_time = start_time;
 346
 347                         for node in scan_nodes.drain(..) {
 348                                 scan_node(iter_time, node, false);
 349                                 iter_time += per_iter_time;
 350                         }
 351                 }
 352                 Delay::new(start_time + Duration::from_secs(datastore::SECS_PER_SCAN_RESULTS)).then(move |_| {
 353                         if !START_SHUTDOWN.load(Ordering::Relaxed) {
 354                                 scan_net();
 355                         }
 356                         future::ok(())
 357                 })
 358         }));
 359 }
 360
 361 fn make_trusted_conn(trusted_sockaddr: SocketAddr, bgp_client: Arc<BGPClient>) {
 362         let printer = unsafe { PRINTER.as_ref().unwrap() };
 363         let trusted_peer = Peer::new(trusted_sockaddr.clone(), unsafe { TOR_PROXY.as_ref().unwrap() }, Duration::from_secs(600), printer);
 364         let bgp_reload = Arc::clone(&bgp_client);
 365         tokio::spawn(trusted_peer.and_then(move |(mut trusted_write, trusted_read)| {
 366                 printer.add_line("Connected to local peer".to_string(), false);
 367                 let mut starting_height = 0;
 368                 TimeoutStream::new_persistent(trusted_read, Duration::from_secs(600)).map_err(|_| { () }).for_each(move |msg| {
 369                         if START_SHUTDOWN.load(Ordering::Relaxed) {
 370                                 return future::err(());
 371                         }
 372                         match msg {
 373                                 Some(NetworkMessage::Version(ver)) => {
 374                                         if let Err(_) = trusted_write.try_send(NetworkMessage::Verack) {
 375                                                 return future::err(())
 376                                         }
 377                                         starting_height = ver.start_height;
 378                                 },
 379                                 Some(NetworkMessage::Verack) => {
 380                                         if let Err(_) = trusted_write.try_send(NetworkMessage::SendHeaders) {
 381                                                 return future::err(());
 382                                         }
 383                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetHeaders(GetHeadersMessage {
 384                                                 version: 70015,
 385                                                 locator_hashes: vec![unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().0.clone()],
 386                                                 stop_hash: Default::default(),
 387                                         })) {
 388                                                 return future::err(());
 389                                         }
 390                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetAddr) {
 391                                                 return future::err(());
 392                                         }
 393                                 },
 394                                 Some(NetworkMessage::Addr(addrs)) => {
 395                                         unsafe { DATA_STORE.as_ref().unwrap() }.add_fresh_nodes(&addrs);
 396                                 },
 397                                 Some(NetworkMessage::Headers(headers)) => {
 398                                         if headers.is_empty() {
 399                                                 return future::ok(());
 400                                         }
 401                                         let mut header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
 402                                         let mut height_map = unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap();
 403
 404                                         if let Some(height) = header_map.get(&headers[0].prev_blockhash).cloned() {
 405                                                 for i in 0..headers.len() {
 406                                                         let hash = headers[i].block_hash();
 407                                                         if i < headers.len() - 1 && headers[i + 1].prev_blockhash != hash {
 408                                                                 return future::err(());
 409                                                         }
 410                                                         header_map.insert(headers[i].block_hash(), height + 1 + (i as u64));
 411                                                         height_map.insert(height + 1 + (i as u64), headers[i].block_hash());
 412                                                 }
 413
 414                                                 let top_height = height + headers.len() as u64;
 415                                                 *unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap()
 416                                                         = (headers.last().unwrap().block_hash(), top_height);
 417                                                 printer.set_stat(printer::Stat::HeaderCount(top_height));
 418
 419                                                 if top_height >= starting_height as u64 {
 420                                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetData(vec![
 421                                                                         Inventory::WitnessBlock(height_map.get(&(top_height - 216)).unwrap().clone())
 422                                                         ])) {
 423                                                                 return future::err(());
 424                                                         }
 425                                                 }
 426                                         } else {
 427                                                 // Wat? Lets start again...
 428                                                 printer.add_line("Got unconnected headers message from local trusted peer".to_string(), true);
 429                                         }
 430                                         if let Err(_) = trusted_write.try_send(NetworkMessage::GetHeaders(GetHeadersMessage {
 431                                                 version: 70015,
 432                                                 locator_hashes: vec![unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().0.clone()],
 433                                                 stop_hash: Default::default(),
 434                                         })) {
 435                                                 return future::err(())
 436                                         }
 437                                 },
 438                                 Some(NetworkMessage::Block(block)) => {
 439                                         let hash = block.block_hash();
 440                                         let header_map = unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap();
 441                                         let height = *header_map.get(&hash).expect("Got loose block from trusted peer we coulnd't have requested");
 442                                         if height == unsafe { HIGHEST_HEADER.as_ref().unwrap() }.lock().unwrap().1 - 216 {
 443                                                 *unsafe { REQUEST_BLOCK.as_ref().unwrap() }.lock().unwrap() = Arc::new((height, hash, block));
 444                                                 if !SCANNING.swap(true, Ordering::SeqCst) {
 445                                                         scan_net();
 446                                                         poll_dnsseeds(Arc::clone(&bgp_client));
 447                                                 }
 448                                         }
 449                                 },
 450                                 Some(NetworkMessage::Ping(v)) => {
 451                                         if let Err(_) = trusted_write.try_send(NetworkMessage::Pong(v)) {
 452                                                 return future::err(())
 453                                         }
 454                                 },
 455                                 _ => {},
 456                         }
 457                         future::ok(())
 458                 }).then(|_| {
 459                         future::err(())
 460                 })
 461         }).then(move |_: Result<(), ()>| {
 462                 if !START_SHUTDOWN.load(Ordering::Relaxed) {
 463                         printer.add_line("Lost connection from trusted peer".to_string(), true);
 464                         make_trusted_conn(trusted_sockaddr, bgp_reload);
 465                 }
 466                 future::ok(())
 467         }));
 468 }
 469
 470 fn main() {
 471         if env::args().len() != 5 {
 472                 println!("USAGE: dnsseed-rust datastore localPeerAddress tor_proxy_addr bgp_peer");
 473                 return;
 474         }
 475
 476         unsafe { HEADER_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
 477         unsafe { HEIGHT_MAP = Some(Box::new(Mutex::new(HashMap::with_capacity(600000)))) };
 478         unsafe { HEADER_MAP.as_ref().unwrap() }.lock().unwrap().insert(genesis_block(Network::Bitcoin).block_hash(), 0);
 479         unsafe { HEIGHT_MAP.as_ref().unwrap() }.lock().unwrap().insert(0, genesis_block(Network::Bitcoin).block_hash());
 480         unsafe { HIGHEST_HEADER = Some(Box::new(Mutex::new((genesis_block(Network::Bitcoin).block_hash(), 0)))) };
 481         unsafe { REQUEST_BLOCK = Some(Box::new(Mutex::new(Arc::new((0, genesis_block(Network::Bitcoin).block_hash(), genesis_block(Network::Bitcoin)))))) };
 482
 483         let trt = tokio::runtime::Builder::new()
 484                 .blocking_threads(2).core_threads(num_cpus::get().max(1) + 1)
 485                 .build().unwrap();
 486
 487         let _ = trt.block_on_all(future::lazy(|| {
 488                 let mut args = env::args();
 489                 args.next();
 490                 let path = args.next().unwrap();
 491                 let trusted_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 492
 493                 let tor_socks5_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 494                 unsafe { TOR_PROXY = Some(tor_socks5_sockaddr); }
 495
 496                 let bgp_sockaddr: SocketAddr = args.next().unwrap().parse().unwrap();
 497
 498                 Store::new(path).and_then(move |store| {
 499                         unsafe { DATA_STORE = Some(Box::new(store)) };
 500                         let store = unsafe { DATA_STORE.as_ref().unwrap() };
 501                         unsafe { PRINTER = Some(Box::new(Printer::new(store))) };
 502
 503                         let bgp_client = BGPClient::new(bgp_sockaddr, Duration::from_secs(60), unsafe { PRINTER.as_ref().unwrap() });
 504                         make_trusted_conn(trusted_sockaddr, Arc::clone(&bgp_client));
 505
 506                         reader::read(store, unsafe { PRINTER.as_ref().unwrap() }, bgp_client);
 507
 508                         future::ok(())
 509                 }).or_else(|_| {
 510                         future::err(())
 511                 })
 512         }));
 513
 514         tokio::run(future::lazy(|| {
 515                 unsafe { DATA_STORE.as_ref().unwrap() }.save_data()
 516         }));
 517 }