Magic DNS and easytier-web improvements (#856)

1. dns add macos system config
2. allow easytier-web serve dashboard and api in same port

easytier/src/instance/dns_server/system_config/windows.rs

@@ -6,6 +6,8 @@ use winreg::RegKey;
 
 use crate::common::ifcfg::RegistryManager;
 
+use super::{OSConfig, SystemConfig};
+
 pub fn is_windows_10_or_better() -> io::Result<bool> {
     let hklm = winreg::enums::HKEY_LOCAL_MACHINE;
     let key_path = "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion";
@@ -150,6 +152,23 @@ impl WindowsDNSManager {
     }
 }
 
+impl SystemConfig for WindowsDNSManager {
+    fn set_dns(&self, cfg: &OSConfig) -> io::Result<()> {
+        self.set_primary_dns(
+            &cfg.nameservers
+                .iter()
+                .map(|s| s.parse::<IpAddr>().unwrap())
+                .collect::<Vec<_>>(),
+            &cfg.match_domains,
+        )?;
+        Ok(())
+    }
+
+    fn close(&self) -> io::Result<()> {
+        Ok(())
+    }
+}
+
 #[cfg(test)]
 mod tests {
     use cidr::Ipv4Inet;