+ state_ref.last_update = now;
+ ret
+ }
+
+ pub fn save_data(&'static self) -> impl Future<Item=(), Error=()> {
+ let settings_file = self.store.clone() + "/settings";
+ let settings_future = File::create(settings_file.clone() + ".tmp").and_then(move |f| {
+ let settings_string = format!("{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}\n{}",
+ self.get_u64(U64Setting::ConnsPerSec),
+ self.get_u64(U64Setting::RunTimeout),
+ self.get_u64(U64Setting::WasGoodTimeout),
+ self.get_u64(U64Setting::MinProtocolVersion),
+ self.get_u64(U64Setting::RescanInterval(AddressState::Untested)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::LowBlockCount)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::HighBlockCount)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::LowVersion)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::BadVersion)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::NotFullNode)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::ProtocolViolation)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::Timeout)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutDuringRequest)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingAddr)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::TimeoutAwaitingBlock)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::Good)),
+ self.get_u64(U64Setting::RescanInterval(AddressState::WasGood)),
+ self.get_regex(RegexSetting::SubverRegex).as_str());
+ write_all(f, settings_string).and_then(|(mut f, _)| {
+ f.poll_sync_all()
+ }).and_then(|_| {
+ tokio::fs::rename(settings_file.clone() + ".tmp", settings_file)
+ })
+ });
+
+ let nodes_file = self.store.clone() + "/nodes";
+ let nodes_future = File::create(nodes_file.clone() + ".tmp").and_then(move |f| {
+ let mut nodes_buff = String::new();
+ {
+ let nodes = self.nodes.read().unwrap();
+ nodes_buff.reserve(nodes.nodes_to_state.len() * 20);
+ for (ref sockaddr, ref node) in nodes.nodes_to_state.iter() {
+ nodes_buff += &sockaddr.to_string();
+ nodes_buff += ",";
+ nodes_buff += &node.state.to_num().to_string();
+ nodes_buff += ",";
+ nodes_buff += &node.last_services.to_string();
+ nodes_buff += "\n";
+ }
+ }
+ write_all(f, nodes_buff)
+ }).and_then(|(mut f, _)| {
+ f.poll_sync_all()
+ }).and_then(|_| {
+ tokio::fs::rename(nodes_file.clone() + ".tmp", nodes_file)
+ });
+
+ let dns_file = self.store.clone() + "/nodes.dump";
+ let dns_future = File::create(dns_file.clone() + ".tmp").and_then(move |f| {
+ let mut dns_buff = String::new();
+ {
+ let nodes = self.nodes.read().unwrap();
+ let mut rng = thread_rng();
+ for i in &[1u64, 4, 5, 8, 9, 12, 13, 1024, 1025, 1028, 1029, 1032, 1033, 1036, 1037] {
+ let mut v6_set = Vec::new();
+ let mut v4_set = Vec::new();
+ if i.count_ones() == 1 {
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ let set_ref = &nodes.good_node_services[j];
+ v4_set = set_ref.iter().filter(|e| e.is_ipv4() && e.port() == 8333)
+ .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
+ v6_set = set_ref.iter().filter(|e| e.is_ipv6() && e.port() == 8333)
+ .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
+ break;
+ }
+ }
+ } else if i.count_ones() == 2 {
+ let mut first_set = None;
+ let mut second_set = None;
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ if first_set == None {
+ first_set = Some(&nodes.good_node_services[j]);
+ } else {
+ second_set = Some(&nodes.good_node_services[j]);
+ break;
+ }
+ }
+ }
+ v4_set = first_set.unwrap().intersection(&second_set.unwrap())
+ .filter(|e| e.is_ipv4() && e.port() == 8333)
+ .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
+ v6_set = first_set.unwrap().intersection(&second_set.unwrap())
+ .filter(|e| e.is_ipv6() && e.port() == 8333)
+ .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
+ } else {
+ //TODO: Could optimize this one a bit
+ let mut intersection;
+ let mut intersection_set_ref = None;
+ for j in 0..64 {
+ if i & (1 << j) != 0 {
+ if intersection_set_ref == None {
+ intersection_set_ref = Some(&nodes.good_node_services[j]);
+ } else {
+ let new_intersection = intersection_set_ref.unwrap()
+ .intersection(&nodes.good_node_services[j]).map(|e| (*e).clone()).collect();
+ intersection = Some(new_intersection);
+ intersection_set_ref = Some(intersection.as_ref().unwrap());
+ }
+ }
+ }
+ v4_set = intersection_set_ref.unwrap().iter()
+ .filter(|e| e.is_ipv4() && e.port() == 8333)
+ .choose_multiple(&mut rng, 21).iter().map(|e| e.ip()).collect();
+ v6_set = intersection_set_ref.unwrap().iter()
+ .filter(|e| e.is_ipv6() && e.port() == 8333)
+ .choose_multiple(&mut rng, 12).iter().map(|e| e.ip()).collect();
+ }
+ for a in v4_set {
+ dns_buff += &format!("x{:x}.dnsseed\tIN\tA\t{}\n", i, a);
+ }
+ for a in v6_set {
+ dns_buff += &format!("x{:x}.dnsseed\tIN\tAAAA\t{}\n", i, a);
+ }
+ }
+ }
+ write_all(f, dns_buff)
+ }).and_then(|(mut f, _)| {
+ f.poll_sync_all()
+ }).and_then(|_| {
+ tokio::fs::rename(dns_file.clone() + ".tmp", dns_file)
+ });
+
+ settings_future.join3(nodes_future, dns_future).then(|_| { future::ok(()) })