From 3af05e442d4f6e64289a6160c01def75d9e3c0ef Mon Sep 17 00:00:00 2001
From: mmcw-dev <hi@mmcwilliams.com>
Date: Thu, 4 Jan 2018 16:10:38 -0500
Subject: [PATCH] Track the local ip address of the wlan0 interface and report
 information to the BLE service.

---
 lib/ble/index.js | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/ble/index.js b/lib/ble/index.js
index 2be0f0c..8bb39ea 100644
--- a/lib/ble/index.js
+++ b/lib/ble/index.js
@@ -22,6 +22,7 @@ const bleno = require('bleno')
 
 
 let currentWifi = 'disconnected'
+let currentAddr = null
 let getState
 
 const chars = []
@@ -78,6 +79,7 @@ function onWifiWrite (data, offset, withoutResponse, callback) {
 				return callback(result)
 	 		}
 	 		currentWifi = ssid
+	 		currentAddr = getIp()
 	 		log.info(`Connected to AP`, { ssid : ssid })
 	 		result = bleno.Characteristic.RESULT_SUCCESS
 			return callback(result)
@@ -96,6 +98,7 @@ function onWifiRead (offset, callback) {
 		}
 		wifiRes.available = list
 		wifiRes.current = currentWifi
+		wifiRes.ip = currentAddr
 		log.info('Discovered available APs', { found : list.length })
 		data = new Buffer(JSON.stringify(wifiRes))
 		callback(result, data.slice(offset, data.length))
@@ -133,6 +136,23 @@ function spoofMac () {
 	return MACTMP
 }
 
+function getIp () {
+	let addr = null
+	let ipv4
+	const ifaces = os.networkInterfaces()
+	if (ifaces && ifaces.wlan0) {
+		ipv4 = ifaces.wlan0.filter(iface => {
+			if (iface.family === 'IPv4') {
+				return iface
+			}
+		})
+		if (ipv4.length === 1) {
+			addr = ipv4.address
+		}
+	}
+	return addr
+}
+
 
 function capitalize (s) {
     return s[0].toUpperCase() + s.slice(1)
@@ -186,6 +206,7 @@ class BLE {
 				return log.error('wifi.getNetwork', err)
 			}
 			currentWifi = ssid
+			currentAddr = getIp()
 			log.info('wifi.getNetwork', {ssid : ssid})
 		})
 	}