Work on UAPI serialize device

src/wireguard/handshake/device.rs

@@ -202,7 +202,7 @@ impl Device {
     /// A 32 byte array holding the PSK
     ///
     /// The call might fail if the public key is not found
-    pub fn get_psk(&self, pk: PublicKey) -> Result<Psk, ConfigError> {
+    pub fn get_psk(&self, pk: &PublicKey) -> Result<Psk, ConfigError> {
         match self.pk_map.get(pk.as_bytes()) {
             Some(peer) => Ok(peer.psk),
             _ => Err(ConfigError::new("No such public key")),

src/wireguard/wireguard.rs

@@ -204,6 +204,9 @@ impl<T: Tun, B: Bind> Wireguard<T, B> {
     pub fn set_psk(&self, pk: PublicKey, psk: Option<[u8; 32]>) -> bool {
         self.state.handshake.write().set_psk(pk, psk).is_ok()
     }
+    pub fn get_psk(&self, pk: &PublicKey) -> Option<[u8; 32]> {
+        self.state.handshake.read().get_psk(pk).ok()
+    }
 
     pub fn add_peer(&self, pk: PublicKey) {
         if self.state.peers.read().contains_key(pk.as_bytes()) {