From 398d5fe2b781acdec0efa197d5c79a1b8aab654b Mon Sep 17 00:00:00 2001
From: Albert Siersema <albert@mediacaster.nl>
Date: Sat, 1 Feb 2020 11:01:36 +0100
Subject: [PATCH] Fixed missing PoE graphs for Cisco devices (#11087)

* Fixed missing PoE graphs for Cisco devices where portIfIndex can't be retrieved from CISCO-STACK-MIB

* Codeclimate & Travis error corrections

Co-authored-by: PipoCanaja <38363551+PipoCanaja@users.noreply.github.com>
---
 includes/polling/ports.inc.php | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/includes/polling/ports.inc.php b/includes/polling/ports.inc.php
index 043f50b11d..db2b38ba82 100644
--- a/includes/polling/ports.inc.php
+++ b/includes/polling/ports.inc.php
@@ -326,8 +326,18 @@ if (Config::get('enable_ports_poe')) {
 
     if ($device['os'] == 'ios' || $device['os'] == 'iosxe') {
         echo 'cpeExtPsePortEntry';
-        $port_stats_poe = snmpwalk_cache_oid($device, 'cpeExtPsePortEntry', array(), 'CISCO-POWER-ETHERNET-EXT-MIB');
-        $port_ent_to_if = snmpwalk_cache_oid($device, 'portIfIndex', array(), 'CISCO-STACK-MIB');
+        $port_stats_poe = snmpwalk_cache_oid($device, 'cpeExtPsePortEntry', [], 'CISCO-POWER-ETHERNET-EXT-MIB');
+        $port_ent_to_if = snmpwalk_cache_oid($device, 'portIfIndex', [], 'CISCO-STACK-MIB');
+
+        if (!$port_ent_to_if) {
+            $ifTable_ifDescr = snmpwalk_cache_oid($device, 'ifDescr', [], 'IF-MIB');
+            $port_ent_to_if = [];
+            foreach ($ifTable_ifDescr as $if_index => $if_descr) {
+                if (preg_match('/^[[:alpha:]]+ethernet([0-9\/.]+)$/i', $if_descr['ifDescr'], $matches)) {
+                    $port_ent_to_if[str_replace('/', '.', $matches[1])] = ['portIfIndex' => $if_index];
+                }
+            }
+        }
 
         foreach ($port_stats_poe as $p_index => $p_stats) {
             //We replace the ENTITY EntIndex by the IfIndex using the portIfIndex table (stored in $port_ent_to_if).