style: rustfmt the Wake-on-LAN modules

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/punktfunk-core/src/wol.rs

@@ -64,7 +64,10 @@ pub fn build_magic_packet(mac: Mac) -> [u8; 102] {
 /// could be opened or nothing could be sent at all.
 pub fn send_magic_packet(macs: &[Mac], last_known_ip: Option<Ipv4Addr>) -> io::Result<()> {
     if macs.is_empty() {
-        return Err(io::Error::new(io::ErrorKind::InvalidInput, "no MAC addresses"));
+        return Err(io::Error::new(
+            io::ErrorKind::InvalidInput,
+            "no MAC addresses",
+        ));
     }
 
     // Build the target IP set: each interface's directed broadcast, the limited broadcast, and
@@ -100,7 +103,10 @@ pub fn send_magic_packet(macs: &[Mac], last_known_ip: Option<Ipv4Addr>) -> io::R
     if sent_any {
         Ok(())
     } else {
-        Err(io::Error::new(io::ErrorKind::Other, "no magic packet could be sent"))
+        Err(io::Error::new(
+            io::ErrorKind::Other,
+            "no magic packet could be sent",
+        ))
     }
 }
 
@@ -118,9 +124,9 @@ fn broadcast_addrs() -> Vec<Ipv4Addr> {
             continue;
         }
         if let if_addrs::IfAddr::V4(v4) = iface.addr {
-            let bcast = v4.broadcast.unwrap_or_else(|| {
-                Ipv4Addr::from(u32::from(v4.ip) | !u32::from(v4.netmask))
-            });
+            let bcast = v4
+                .broadcast
+                .unwrap_or_else(|| Ipv4Addr::from(u32::from(v4.ip) | !u32::from(v4.netmask)));
             // Skip a degenerate 0.0.0.0 (unconfigured) and the all-ones limited broadcast we
             // already add unconditionally.
             if !bcast.is_unspecified() && bcast != Ipv4Addr::BROADCAST {
@@ -156,8 +162,14 @@ mod tests {
 
     #[test]
     fn parse_mac_forms() {
-        assert_eq!(parse_mac("aa:bb:cc:dd:ee:ff"), Some([0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff]));
-        assert_eq!(parse_mac("AA-BB-CC-DD-EE-FF"), Some([0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff]));
+        assert_eq!(
+            parse_mac("aa:bb:cc:dd:ee:ff"),
+            Some([0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff])
+        );
+        assert_eq!(
+            parse_mac("AA-BB-CC-DD-EE-FF"),
+            Some([0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff])
+        );
         assert_eq!(parse_mac("01:02:03:04:05:06"), Some([1, 2, 3, 4, 5, 6]));
         assert_eq!(parse_mac("aa:bb:cc:dd:ee"), None); // too few
         assert_eq!(parse_mac("aa:bb:cc:dd:ee:ff:00"), None); // too many

crates/punktfunk-host/src/wol.rs

@@ -66,11 +66,17 @@ pub fn wake_macs(primary_ip: IpAddr) -> Vec<String> {
 #[cfg(target_os = "linux")]
 pub fn warn_if_not_armed(primary_ip: IpAddr) {
     let ifaces = if_addrs::get_if_addrs().unwrap_or_default();
-    let Some(iface) = ifaces.iter().find(|i| i.ip() == primary_ip).map(|i| i.name.clone()) else {
+    let Some(iface) = ifaces
+        .iter()
+        .find(|i| i.ip() == primary_ip)
+        .map(|i| i.name.clone())
+    else {
         return;
     };
     match ethtool_wol_has_magic(&iface) {
-        Some(true) => tracing::info!(iface = %iface, "Wake-on-LAN armed (magic packet) on host NIC"),
+        Some(true) => {
+            tracing::info!(iface = %iface, "Wake-on-LAN armed (magic packet) on host NIC")
+        }
         Some(false) => tracing::warn!(
             iface = %iface,
             "Wake-on-LAN is NOT armed on this host's NIC — clients cannot wake it from sleep. \
@@ -88,7 +94,10 @@ pub fn warn_if_not_armed(_primary_ip: IpAddr) {}
 /// (wake on MagicPacket). Returns `None` if ethtool is missing/failed or the field is absent.
 #[cfg(target_os = "linux")]
 fn ethtool_wol_has_magic(iface: &str) -> Option<bool> {
-    let out = std::process::Command::new("ethtool").arg(iface).output().ok()?;
+    let out = std::process::Command::new("ethtool")
+        .arg(iface)
+        .output()
+        .ok()?;
     if !out.status.success() {
         return None;
     }