Groundwork for watching iface changes on Apple via Network.framework

[netwatcher] / src / imp_mac.rs

diff --git a/src/imp_mac.rs b/src/imp_mac.rs
index c4fc8d681350d863e2b15b61945d84217df5dc18..4ae0fc7c8b6d1053b2f77bc69bc9dc4ec9089db7 100644 (file)
--- a/src/imp_mac.rs
+++ b/src/imp_mac.rs
@@ -1,5 +1,7 @@
 use std::{collections::HashMap, net::IpAddr};
 
+use block2::Block;
+use nix::libc::c_long;
 use nix::{ifaddrs::getifaddrs, net::if_::if_nametoindex};
 
 use crate::util::format_mac;
@@ -60,6 +62,31 @@ pub(crate) fn list_interfaces() -> Result<HashMap<IfIndex, Interface>, Error> {
     Ok(ifs)
 }
 
+// The "objc2" project aims to provide bindings for all frameworks but Network.framework
+// isn't ready yet so let's kick it old-school
+
+struct nw_path_monitor;
+type nw_path_monitor_t = *mut nw_path_monitor;
+struct nw_path;
+type nw_path_t = *mut nw_path;
+struct dispatch_queue;
+type dispatch_queue_t = *mut dispatch_queue;
+const QOS_CLASS_BACKGROUND: usize = 0x09;
+
+#[link(name = "Network", kind = "framework")]
+extern "C" {
+    fn nw_path_monitor_create() -> nw_path_monitor_t;
+    fn nw_path_monitor_set_update_handler(
+        monitor: nw_path_monitor_t,
+        update_handler: &Block<dyn Fn(nw_path_t)>,
+    );
+    fn nw_path_monitor_set_queue(monitor: nw_path_monitor_t, queue: dispatch_queue_t);
+    fn nw_path_monitor_start(monitor: nw_path_monitor_t);
+    fn nw_path_monitor_cancel(monitor: nw_path_monitor_t);
+
+    fn dispatch_get_global_queue(identifier: usize, flag: usize) -> dispatch_queue_t;
+}
+
 #[cfg(test)]
 mod test {
     use super::list_interfaces;