Add cargo-test runner for macos x86-64 (#348)

* added cargo-test runner for macos 86-64
---------

Co-authored-by: Prabhpreet Dua <615318+prabhpreet@users.noreply.github.com>

wireguard-broker/src/bin/priviledged.rs

@@ -1,56 +1,67 @@
-use std::io::{stdin, stdout, Read, Write};
-use std::result::Result;
+fn main() {
+    #[cfg(target_os = "linux")]
+    linux::main().unwrap();
 
-use rosenpass_wireguard_broker::api::msgs;
-use rosenpass_wireguard_broker::api::server::BrokerServer;
-use rosenpass_wireguard_broker::brokers::netlink as wg;
-
-#[derive(thiserror::Error, Debug)]
-pub enum BrokerAppError {
-    #[error(transparent)]
-    IoError(#[from] std::io::Error),
-    #[error(transparent)]
-    WgConnectError(#[from] wg::ConnectError),
-    #[error(transparent)]
-    WgSetPskError(#[from] wg::SetPskError),
-    #[error("Oversized message {}; something about the request is fatally wrong", .0)]
-    OversizedMessage(u64),
+    #[cfg(not(target_os = "linux"))]
+    panic!("This binary is only supported on Linux");
 }
 
-fn main() -> Result<(), BrokerAppError> {
-    let mut broker = BrokerServer::new(wg::NetlinkWireGuardBroker::new()?);
+#[cfg(target_os = "linux")]
+pub mod linux {
+    use std::io::{stdin, stdout, Read, Write};
+    use std::result::Result;
 
-    let mut stdin = stdin().lock();
-    let mut stdout = stdout().lock();
-    loop {
-        // Read the message length
-        let mut len = [0u8; 8];
-        stdin.read_exact(&mut len)?;
+    use rosenpass_wireguard_broker::api::msgs;
+    use rosenpass_wireguard_broker::api::server::BrokerServer;
+    use rosenpass_wireguard_broker::brokers::netlink as wg;
 
-        // Parse the message length
-        let len = u64::from_le_bytes(len);
-        if (len as usize) > msgs::REQUEST_MSG_BUFFER_SIZE {
-            return Err(BrokerAppError::OversizedMessage(len));
-        }
+    #[derive(thiserror::Error, Debug)]
+    pub enum BrokerAppError {
+        #[error(transparent)]
+        IoError(#[from] std::io::Error),
+        #[error(transparent)]
+        WgConnectError(#[from] wg::ConnectError),
+        #[error(transparent)]
+        WgSetPskError(#[from] wg::SetPskError),
+        #[error("Oversized message {}; something about the request is fatally wrong", .0)]
+        OversizedMessage(u64),
+    }
 
-        // Read the message itself
-        let mut req_buf = [0u8; msgs::REQUEST_MSG_BUFFER_SIZE];
-        let req_buf = &mut req_buf[..(len as usize)];
-        stdin.read_exact(req_buf)?;
+    pub fn main() -> Result<(), BrokerAppError> {
+        let mut broker = BrokerServer::new(wg::NetlinkWireGuardBroker::new()?);
 
-        // Process the message
-        let mut res_buf = [0u8; msgs::RESPONSE_MSG_BUFFER_SIZE];
-        let res = match broker.handle_message(req_buf, &mut res_buf) {
-            Ok(len) => &res_buf[..len],
-            Err(e) => {
-                eprintln!("Error processing message for wireguard PSK broker: {e:?}");
-                continue;
+        let mut stdin = stdin().lock();
+        let mut stdout = stdout().lock();
+        loop {
+            // Read the message length
+            let mut len = [0u8; 8];
+            stdin.read_exact(&mut len)?;
+
+            // Parse the message length
+            let len = u64::from_le_bytes(len);
+            if (len as usize) > msgs::REQUEST_MSG_BUFFER_SIZE {
+                return Err(BrokerAppError::OversizedMessage(len));
             }
-        };
 
-        // Write the response
-        stdout.write_all(&(res.len() as u64).to_le_bytes())?;
-        stdout.write_all(&res)?;
-        stdout.flush()?;
+            // Read the message itself
+            let mut req_buf = [0u8; msgs::REQUEST_MSG_BUFFER_SIZE];
+            let req_buf = &mut req_buf[..(len as usize)];
+            stdin.read_exact(req_buf)?;
+
+            // Process the message
+            let mut res_buf = [0u8; msgs::RESPONSE_MSG_BUFFER_SIZE];
+            let res = match broker.handle_message(req_buf, &mut res_buf) {
+                Ok(len) => &res_buf[..len],
+                Err(e) => {
+                    eprintln!("Error processing message for wireguard PSK broker: {e:?}");
+                    continue;
+                }
+            };
+
+            // Write the response
+            stdout.write_all(&(res.len() as u64).to_le_bytes())?;
+            stdout.write_all(&res)?;
+            stdout.flush()?;
+        }
     }
 }

wireguard-broker/src/brokers/mod.rs

@@ -1,6 +1,6 @@
 #[cfg(feature = "enable_broker_api")]
 pub mod mio_client;
-#[cfg(feature = "enable_broker_api")]
+#[cfg(all(feature = "enable_broker_api", target_os = "linux"))]
 pub mod netlink;
 
 pub mod native_unix;

wireguard-broker/src/brokers/netlink.rs

@@ -1,3 +1,5 @@
+#![cfg(target_os = "linux")]
+
 use std::fmt::Debug;
 
 use wireguard_uapi::linux as wg;