From 2370c08cbde6ee6884df7719b23ed36278bc80ff Mon Sep 17 00:00:00 2001
From: Neil Lathwood <neil@lathwood.co.uk>
Date: Sat, 12 Aug 2017 21:54:50 +0100
Subject: [PATCH] newdevice: Added RSSI Support for Cisco IOS wireless devices
 (#7147)

---
 LibreNMS/OS/Ios.php | 29 ++++++++++++++++++++++++++++-
 1 file changed, 28 insertions(+), 1 deletion(-)

diff --git a/LibreNMS/OS/Ios.php b/LibreNMS/OS/Ios.php
index cd44c3c535..ab505690aa 100644
--- a/LibreNMS/OS/Ios.php
+++ b/LibreNMS/OS/Ios.php
@@ -27,9 +27,12 @@ namespace LibreNMS\OS;
 
 use LibreNMS\Device\WirelessSensor;
 use LibreNMS\Interfaces\Discovery\Sensors\WirelessClientsDiscovery;
+use LibreNMS\Interfaces\Discovery\Sensors\WirelessRssiDiscovery;
 use LibreNMS\OS;
 
-class Ios extends OS implements WirelessClientsDiscovery
+class Ios extends OS implements
+    WirelessClientsDiscovery,
+    WirelessRssiDiscovery
 {
     /**
      * @return array Sensors
@@ -84,4 +87,28 @@ class Ios extends OS implements WirelessClientsDiscovery
         }
         return $sensors;
     }
+
+    /**
+     * Discover wireless RSSI (Received Signal Strength Indicator). This is in dBm. Type is rssi.
+     * Returns an array of LibreNMS\Device\Sensor objects that have been discovered
+     *
+     * @return array
+     */
+    public function discoverWirelessRssi()
+    {
+        $data = snmpwalk_cache_oid($this->getDevice(), 'c3gCurrentGsmRssi', array(), 'CISCO-WAN-3G-MIB');
+        foreach ($data as $index => $entry) {
+            $sensors[] = new WirelessSensor(
+                'rssi',
+                $this->getDeviceId(),
+                '.1.3.6.1.4.1.9.9.661.1.3.4.1.1.1.' . $index,
+                'ios',
+                $index,
+                'RSSI: Chain ' . str_replace('1.', '', $index),
+                $entry['c3gCurrentGsmRssi.1']
+            );
+        }
+
+        return $sensors;
+    }
 }