get DHCP status in linux

lib/network.js

@@ -317,6 +317,31 @@ function getDarwinNics() {
   }
 }
 
+
+function getNicDHCPstatus(interfaceName) {
+  const cmd = `nmcli con sh "${interfaceName}" | grep ipv4.method`;
+  console.log(cmd);
+  try {
+    let dhcpStatus = "";
+    const lines = execSync(cmd, util.execOptsWin).toString().split('\n');
+    const nsections = splitSectionsNics(lines);
+    console.log(nsections);
+    switch (key) {
+      case "auto":
+        dhcpStatus = "true";
+        break;
+    
+      default:
+        dhcpStatus = "false";
+        break;
+    }
+    return dhcpStatus;
+  } catch (e) {
+    return [];
+  }
+}
+
+
 function testVirtualNic(iface, ifaceName, mac) {
   const virtualMacs = ['00:00:00:00:00:00', '00:03:FF', '00:05:69', '00:0C:29', '00:0F:4B', '00:0F:4B', '00:13:07', '00:13:BE', '00:15:5d', '00:16:3E', '00:1C:42', '00:21:F6', '00:21:F6', '00:24:0B', '00:24:0B', '00:50:56', '00:A0:B1', '00:E0:C8', '08:00:27', '0A:00:27', '18:92:2C', '16:DF:49', '3C:F3:92', '54:52:00', 'FC:15:97'];
   if (mac) {
@@ -342,11 +367,11 @@ function networkInterfaces(callback) {
       // seperate handling in OSX
       if (_darwin || _freebsd || _openbsd || _netbsd) {
         nics = getDarwinNics();
-        // console.log(nics);
+
-        // console.log('-------');
-        // console.log(ifaces);
         nics.forEach(nic => {
 
+          dhcpStatus = getNicDHCPstatus(nic.iface);
+
           result.push({
             iface: nic.iface,
             ifaceName: nic.iface,
@@ -358,6 +383,7 @@ function networkInterfaces(callback) {
             operstate: nic.operstate,
             type: nic.type,
             duplex: nic.duplex,
+            dhcpStatus: dhcpStatus,
             mtu: nic.mtu,
             speed: nic.speed,
             carrierChanges: 0