From b0308d4efbd28882f4263b629bbe983d2637d1ef Mon Sep 17 00:00:00 2001
From: Sebastian Hildebrandt <hildebrandt@plus-innovations.com>
Date: Mon, 6 Jan 2020 22:34:53 +0100
Subject: [PATCH] networkInterfaces() added DHCP status mac OS

---
 lib/network.js | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/lib/network.js b/lib/network.js
index 9529725..abab9bf 100644
--- a/lib/network.js
+++ b/lib/network.js
@@ -486,7 +486,7 @@ function getLinuxIfaceConnectionName(interfaceName) {
   }
 }
 
-function getLinuxDHCPnNics() {
+function getLinuxDHCPNics() {
   // alternate methods getting interfaces using DHCP
   let cmd = 'ip a';
   let result = [];
@@ -563,6 +563,20 @@ function getLinuxIfaceDHCPstatus(iface, connectionName, DHCPNics) {
   }
 }
 
+function getDarwinIfaceDHCPstatus(iface) {
+  let result = false;
+  const cmd = `ipconfig getpacket "${iface}" 2>/dev/null \| grep lease_time;`;
+  try {
+    const lines = execSync(cmd).toString().split('\n');
+    if (lines.length && lines[0].startsWith('lease_time')) {
+      result = true;
+    }
+  } catch (e) {
+    util.noop();
+  }
+  return result;
+}
+
 function getLinuxIfaceDNSsuffix(connectionName) {
   if (connectionName) {
     const cmd = `nmcli connection show "${connectionName}" 2>/dev/null \| grep ipv4.dns-search;`;
@@ -651,7 +665,7 @@ function networkInterfaces(callback) {
             duplex: nic.duplex,
             mtu: nic.mtu,
             speed: nic.speed,
-            dhcp: false,
+            dhcp: getDarwinIfaceDHCPstatus(nic.iface),
             dnsSuffix: '',
             ieee8021xAuth: '',
             ieee8021xState: '',
@@ -675,7 +689,7 @@ function networkInterfaces(callback) {
             dnsSuffixes = getWindowsDNSsuffixes();
           }
           if (_linux) {
-            _dhcpNics = getLinuxDHCPnNics();
+            _dhcpNics = getLinuxDHCPNics();
           }
           for (let dev in ifaces) {
             let ip4 = '';