Fix compilation on windows (#103)

Author: t-aleksander

Cargo.lock

@@ -12,7 +12,6 @@ keywords = ["wireguard", "network", "vpn"]
 categories = ["network-programming"]
 
 [dependencies]
-boringtun = { path = "boringtun/boringtun", default-features = false, features = ["device"] }
 base64 = "0.22"
 log = "0.4"
 serde = { version = "1.0", features = ["derive"], optional = true }
@@ -26,6 +25,9 @@ tracing = "0.1"
 tracing-subscriber = "0.3"
 
 [target.'cfg(any(target_os = "freebsd", target_os = "macos", target_os = "netbsd"))'.dependencies]
+boringtun = { path = "boringtun/boringtun", default-features = false, features = [
+    "device",
+] }
 libc = { version = "0.2", default-features = false }
 nix = { version = "0.30", features = ["ioctl", "socket"] }
 

Cargo.toml

@@ -41,6 +41,7 @@ pub enum WireguardInterfaceError {
     ServiceRemovalFailed(String),
     #[error("Socket is closed: {0}")]
     SocketClosed(String),
+    #[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "netbsd"))]
     #[error("BoringTun {0}")]
     BoringTun(#[from] boringtun::device::Error),
 }

src/error.rs

@@ -1,6 +1,7 @@
 //! Shared multi-platform management API abstraction
 use std::marker::PhantomData;
 
+#[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "netbsd"))]
 use boringtun::device::DeviceHandle;
 
 #[cfg(feature = "check_dependencies")]
@@ -16,6 +17,7 @@ pub struct Userspace;
 /// to detect the correct API implementation for most common platforms.
 pub struct WGApi<API = Kernel> {
     pub(super) ifname: String,
+    #[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "netbsd"))]
     pub(super) device_handle: Option<DeviceHandle>,
     pub(super) _api: PhantomData<API>,
 }
@@ -27,6 +29,7 @@ impl<API> WGApi<API> {
         check_external_dependencies()?;
         Ok(WGApi {
             ifname: ifname.into(),
+            #[cfg(any(target_os = "freebsd", target_os = "macos", target_os = "netbsd"))]
             device_handle: None,
             _api: PhantomData,
         })

src/wgapi.rs

@@ -20,7 +20,7 @@ use crate::{
 
 /// Manages interfaces created with Windows kernel using https://git.zx2c4.com/wireguard-nt.
 impl WireguardInterfaceApi for WGApi<Kernel> {
-    fn create_interface(&self) -> Result<(), WireguardInterfaceError> {
+    fn create_interface(&mut self) -> Result<(), WireguardInterfaceError> {
         info!("Opening/creating interface {}", self.ifname);
         Ok(())
     }