clippies

src/bfd.rs

@@ -1,4 +1,10 @@
-use std::{ffi::{OsStr, OsString}, fmt::{self, Display}, io::Cursor, ops::{Div, Mul}, time};
+use std::{
+    ffi::OsStr,
+    fmt::{self, Display},
+    io::Cursor,
+    ops::{Div, Mul},
+    time,
+};
 
 use bytemuck::NoUninit;
 use byteorder::{BigEndian, WriteBytesExt};
@@ -56,13 +62,13 @@ impl Display for BfdState {
     }
 }
 
-impl Into<&OsStr> for BfdState {
+impl From<BfdState> for &OsStr {
-    fn into(self) -> &'static OsStr {
+    fn from(val: BfdState) -> Self {
-        match self {
+        match val {
-            Self::AdminDown => OsStr::new("AdminDown"),
+            BfdState::AdminDown => OsStr::new("AdminDown"),
-            Self::Init => OsStr::new("Init"),
+            BfdState::Init => OsStr::new("Init"),
-            Self::Down => OsStr::new("Down"),
+            BfdState::Down => OsStr::new("Down"),
-            Self::Up => OsStr::new("Up"),
+            BfdState::Up => OsStr::new("Up"),
         }
     }
 }

src/bin/rust-bfdd.rs

@@ -15,12 +15,11 @@ use std::{
 };
 
 // Necessary until a hop_limit method is added to UdpSocket
-use nix::sys::socket::{setsockopt, sockopt};
 
 use tokio::sync::{oneshot, Mutex};
 
 use env_logger::Env;
-use log::{debug, error, info, warn};
+use log::{debug, info, warn};
 
 use nom_derive::Parse;
 use rand::prelude::*;
@@ -302,13 +301,10 @@ impl BfdSessionHandle {
 
         let (tx, rx) = mpsc::channel(32);
         let new_self = Self { tx };
-        let periodic =
-            BfdPeriodicSenderHandle::new(new_self.clone(), time::Duration::from_secs(1).into());
 
         let mut session = BfdSession::new(
             rx,
-            new_self.tx.clone(),
+            new_self.clone(),
-            periodic,
             control_sock,
             local_addr,
             remote_addr,
@@ -378,7 +374,7 @@ impl BfdPeriodicSender {
 
         loop {
             tokio::select! {
-             _ = clock.tick(), if running == true => {
+             _ = clock.tick(), if running => {
                         let jitter = time::Duration::from_micros(
                             rand::thread_rng()
                                 .gen_range(0..clock.period().as_micros() / 3)
@@ -401,8 +397,8 @@ impl BfdPeriodicSender {
                                 let base_interval: Duration = (i * 3 / 4).into();
                                 debug!("Updating base interval to {}ms (jittering {} to {}ms)", base_interval.as_millis(), base_interval.as_millis(), base_interval.as_millis() + base_interval.as_millis() / 3);
                                 clock = time::interval_at(
-                                    time::Instant::now() + base_interval.into(),
+                                    time::Instant::now() + base_interval,
-                                    base_interval.into(),
+                                    base_interval,
                                 );
                             },
                             PeriodicControlCommand::SendPollResponse => {
@@ -419,8 +415,7 @@ impl BfdPeriodicSender {
 impl BfdSession {
     fn new(
         rx: mpsc::Receiver<SessionControlCommand>,
-        tx: mpsc::Sender<SessionControlCommand>,
+        handle: BfdSessionHandle,
-        periodic: BfdPeriodicSenderHandle,
         control_sock: UdpSocket,
         local_addr: IpAddr,
         remote_addr: IpAddr,
@@ -428,6 +423,8 @@ impl BfdSession {
         event_dispatcher: EventDispatcherHandle,
     ) -> Self {
         let mut rng = rand::thread_rng();
+        let periodic =
+            BfdPeriodicSenderHandle::new(handle.clone(), time::Duration::from_secs(1).into());
         let configured_desired_min_tx = BfdInterval::from_millis(300);
         let slow_desired_min_tx =
             std::cmp::max(configured_desired_min_tx, BfdInterval::from_secs(1));
@@ -439,7 +436,7 @@ impl BfdSession {
         // Incoming packets will come over the channel from the mux, since they don't send to the reciprocal port
         Self {
             rx,
-            tx,
+            tx: handle.tx,
             periodic,
             rx_watchdog: None,
             cur_interval: BfdInterval::from_secs(1),
@@ -499,13 +496,8 @@ impl BfdSession {
         *self.state.last_state_change.lock().await = Instant::now();
         match (self.state.session_state(), new_state) {
             (BfdState::Up, BfdState::AdminDown | BfdState::Down | BfdState::Init) => {
-                if self.rx_watchdog.is_some() {
+                if let Some(watchdog) = self.rx_watchdog.as_mut() {
-                    self.rx_watchdog
+                    watchdog.send(WatchdogReset::Terminate).await.unwrap();
-                        .as_mut()
-                        .unwrap()
-                        .send(WatchdogReset::Terminate)
-                        .await
-                        .unwrap();
                 };
                 //   When bfd.SessionState is not Up, the system MUST set bfd.DesiredMinTxInterval to a value of not
                 //    less than one second (1,000,000 microseconds).  This is intended to ensure that the bandwidth
@@ -546,7 +538,7 @@ impl BfdSession {
                     self.receive_control_packet(&packet).await;
                 }
                 SessionControlCommand::GetSessionStats { respond_to } => {
-                    let mut stats =
+                    let stats =
                         BfdSessionStats::from(&self.state).with_base_interval(self.cur_interval);
                     respond_to.send(stats).unwrap()
                 }
@@ -589,21 +581,18 @@ impl BfdSession {
         let dest = self.state.peer_addr;
         self.state.control_packets_tx.fetch_add(1, ORDERING);
         debug!("tx packet: {:?}", packet);
-        match socket
+        if let Err(e) = socket
             .send_to(
                 packet.serialize().unwrap().as_ref(),
                 SocketAddr::new(dest, CONTROL_PORT),
             )
             .await
         {
-            Err(e) => {
             warn!(
                 "Error sending packet to {:?}:{} ({:?})",
                 dest, CONTROL_PORT, e
             );
         }
-            Ok(_) => {}
-        }
     }
 
     async fn start_watchdog(&mut self) {
@@ -639,14 +628,12 @@ impl BfdSession {
         });
         let mut temporary = Some(tx);
         swap(&mut temporary, &mut self.rx_watchdog);
-        if temporary.is_some() {
+        if let Some(old_watchdog) = temporary.as_mut() {
             debug!(
                 "Updating old watchdog with new detection time ({}ms)",
                 duration.as_millis()
             );
-            temporary
+            old_watchdog
-                .as_mut()
-                .unwrap()
                 .send(WatchdogReset::Terminate)
                 .await
                 .unwrap_or(())
@@ -662,13 +649,8 @@ impl BfdSession {
         // remote system, and bfd.SessionState is Init or Up, the session has
         // gone down -- the local system MUST set bfd.SessionState to Down and
         // bfd.LocalDiag to 1 (Control Detection Time Expired).
-        if self.rx_watchdog.is_some() {
+        if let Some(watchdog) = self.rx_watchdog.as_ref() {
-            let _ = self
+            let _ = watchdog.send(WatchdogReset::ReceivedPacket).await;
-                .rx_watchdog
-                .as_ref()
-                .unwrap()
-                .send(WatchdogReset::ReceivedPacket)
-                .await;
         }
         self.state.control_packets_rx.fetch_add(1, ORDERING);
         let received_state = match p.flags.state() {
@@ -774,7 +756,7 @@ impl BfdSession {
         self.update_transmit_interval().await;
 
         // Update the Detection Time as described in section 6.8.4.
-        self.update_detection_time(&p).await;
+        self.update_detection_time(p).await;
 
         // If bfd.SessionState is AdminDown
         //   Discard the packet
@@ -889,16 +871,14 @@ impl BfdSession {
     async fn update_detection_time(&mut self, p: &BfdPacket) {
         let old = self.state.detection_time();
         self.state.set_detection_time(if !self.state.demand_mode() {
-            (p.flags.detect_mult() as u32
+            p.flags.detect_mult() as u32
-                * std::cmp::max(self.state.required_min_rx_interval(), p.desired_min_tx))
+                * std::cmp::max(self.state.required_min_rx_interval(), p.desired_min_tx)
-            .into()
         } else {
-            (self.state.detect_mult() as u32
+            self.state.detect_mult() as u32
                 * std::cmp::max(
                     self.state.desired_min_tx_interval(),
                     self.state.remote_min_rx_interval(),
-                ))
+                )
-            .into()
         });
         if old != self.state.detection_time() {
             info!(
@@ -1032,7 +1012,7 @@ impl Bfdd {
         // If BFD authentication is not in use on a session, all BFD Control packets for the session MUST be sent with a
         // Time to Live (TTL) or Hop Limit value of 255.
         set_ttl_or_hop_limit(&control_socket, 255)?;
-        let echo_socket = Arc::new(UdpSocket::bind(SocketAddr::new(local.ip(), ECHO_PORT)).await?);
+        let _echo_socket = Arc::new(UdpSocket::bind(SocketAddr::new(local.ip(), ECHO_PORT)).await?);
 
         let event_dispatcher = EventDispatcherHandle::new().await;
         event_dispatcher
@@ -1052,7 +1032,7 @@ impl Bfdd {
         let mut rng = rand::thread_rng();
         for peer in &self.peers {
             let mut local_discr = BfdDiscriminator(0);
-            while local_discr.0 == 0 || self.sessions_by_discr.get(&local_discr).is_some() {
+            while local_discr.0 == 0 || self.sessions_by_discr.contains_key(&local_discr) {
                 local_discr = BfdDiscriminator(rng.gen());
             }
             let session = BfdSessionHandle::new(
@@ -1112,7 +1092,6 @@ impl Bfdd {
                 .unwrap();
         } else {
             warn!("Unable to match packet to session with");
-            return;
         }
     }
     async fn run(mut self) -> io::Result<()> {
@@ -1187,6 +1166,6 @@ async fn main() -> io::Result<()> {
 
     match Bfdd::new(args).await {
         Ok(bfdd) => bfdd.run().await,
-        Err(e) => Err(std::io::Error::new(ErrorKind::Other, e.to_string())),
+        Err(e) => Err(std::io::Error::other(e.to_string())),
     }
 }

src/events.rs

@@ -3,12 +3,11 @@ use std::{
     ffi::{OsStr, OsString},
     net::IpAddr,
     path::PathBuf,
-    process::ExitStatus,
 };
 
 use itertools::Itertools;
 use log::{debug, info, warn};
-use nix::unistd::{self, eaccess};
+use nix::unistd;
 use tokio::{
     fs, process,
     sync::mpsc,
@@ -53,6 +52,12 @@ impl EventMessageSink for ScriptHookSink {
     }
 }
 
+impl Default for ScriptHookSink {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl ScriptHookSink {
     pub fn new() -> Self {
         let (tx_channel, rx_channel) = mpsc::channel(16);
@@ -83,13 +88,13 @@ impl ScriptHookSink {
                     output.status
                 );
                 if !output.status.success() {
-                    if output.stdout.len() > 0 {
+                    if !output.stdout.is_empty() {
                         warn!(
                             " stdout: \n{}",
                             str::from_utf8(output.stdout.as_slice()).unwrap()
                         );
                     }
-                    if output.stderr.len() > 0 {
+                    if !output.stderr.is_empty() {
                         warn!(
                             " stderr: \n{}",
                             str::from_utf8(output.stderr.as_slice()).unwrap()
@@ -133,7 +138,7 @@ impl ScriptHookSink {
                 .map_or(OsString::new(), |file| file.to_owned())
         });
 
-        if scripts.len() > 0 {
+        if !scripts.is_empty() {
             // Build context
             let mut args = Vec::<&OsStr>::new();
             let mut env = Vec::<(&OsStr, &OsStr)>::new();