CMDPHP ERRORS with SNMP2C PHP File

[msfraticelli]

Hello. I'm currently using the cacti version 1.2.30 with weathermap version 1.3.1. My server is a Debian 6.1.135-1.

The weathermap plugins gets disabled when trying to copy the WeatherMapDataSource_snmp2c.php file to the /var/www/html/cacti/plugins/weathermap/lib/datasources directory.

The errors generated are the following:

2025-05-23 20:40:37 - CMDPHP ERRORS DETECTED - DISABLING PLUGIN 'weathermap'
2025-05-23 20:40:37 - CMDPHP PHP ERROR Backtrace: (CactiShutdownHandler())
2025-05-23 20:40:37 - ERROR PHP ERROR in Plugin 'weathermap': Uncaught Error: Call to undefined function plugin_weathermap_numeric_version() in /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-editor.php:309 Stack trace: #0 {main} thrown in file: /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-editor.php on line: 309
2025-05-23 20:40:37 - CMDPHP PHP ERROR WARNING Backtrace: (/plugins/weathermap/weathermap-cacti-plugin-editor.php[281]:WeatherMap->__construct(), /plugins/weathermap/lib/WeatherMap.class.php[372]:WeatherMap->Reset(), /plugins/weathermap/lib/WeatherMap.class.php[531]:WeatherMap->LoadPlugins(), /plugins/weathermap/lib/WeatherMap.class.php[826]:opendir(), CactiErrorHandler())
2025-05-23 20:40:37 - ERROR PHP WARNING in Plugin 'weathermap': opendir(/var/www/html/cacti/plugins/weathermap/lib/lib/post): Failed to open directory: No such file or directory in file: /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php on line: 826
2025-05-23 20:40:37 - CMDPHP PHP ERROR WARNING Backtrace: (/plugins/weathermap/weathermap-cacti-plugin-editor.php[281]:WeatherMap->__construct(), /plugins/weathermap/lib/WeatherMap.class.php[372]:WeatherMap->Reset(), /plugins/weathermap/lib/WeatherMap.class.php[530]:WeatherMap->LoadPlugins(), /plugins/weathermap/lib/WeatherMap.class.php[826]:opendir(), CactiErrorHandler())
2025-05-23 20:40:37 - ERROR PHP WARNING in Plugin 'weathermap': opendir(/var/www/html/cacti/plugins/weathermap/lib/lib/pre): Failed to open directory: No such file or directory in file: /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php on line: 826
2025-05-23 20:40:37 - CMDPHP PHP ERROR WARNING Backtrace: (/plugins/weathermap/weathermap-cacti-plugin-editor.php[281]:WeatherMap->__construct(), /plugins/weathermap/lib/WeatherMap.class.php[372]:WeatherMap->Reset(), /plugins/weathermap/lib/WeatherMap.class.php[529]:WeatherMap->LoadPlugins(), /plugins/weathermap/lib/WeatherMap.class.php[826]:opendir(), CactiErrorHandler())
2025-05-23 20:40:37 - ERROR PHP WARNING in Plugin 'weathermap': opendir(/var/www/html/cacti/plugins/weathermap/lib/lib/datasources): Failed to open directory: No such file or directory in file: /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php on line: 826
2025-05-23 20:40:31 - CMDPHP ERRORS DETECTED - DISABLING PLUGIN 'weathermap'
2025-05-23 20:40:31 - CMDPHP PHP ERROR Backtrace: (CactiShutdownHandler())
2025-05-23 20:40:31 - ERROR PHP ERROR in Plugin 'weathermap': Uncaught Error: Call to undefined function weathermap_check_set_boost() in /var/www/html/cacti/plugins/weathermap/lib/poller-common.php:276 Stack trace: #0 /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-mgmt.php(447): weathermap_run_maps() #1 /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-mgmt.php(70): weathermap_form_actions() #2 {main} thrown in file: /var/www/html/cacti/plugins/weathermap/lib/poller-common.php on line: 276

Any thoughts on what may be causing this error?

Thank you.

-Moises

[msfraticelli]

I noticed that part of the issue was already discussed on Issue #173. Thanks.

However, fixing that problem, I'm still having problems with the snmp2c.php file. The errors are the following:
2025-05-27 20:37:45 - ERROR PHP ERROR in Plugin 'weathermap': Uncaught Error: Class "Weathermap\Plugins\Datasources\Base" not found in /var/www/html/cacti/plugins/weathermap/lib/datasources/SNMP2c.php:26 Stack trace: #0 /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php(858): include_once() #1 /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php(529): WeatherMap->LoadPlugins() #2 /var/www/html/cacti/plugins/weathermap/lib/WeatherMap.class.php(372): WeatherMap->Reset() #3 /var/www/html/cacti/plugins/weathermap/lib/poller-common.php(382): WeatherMap->__construct() #4 /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-mgmt.php(447): weathermap_run_maps() #5 /var/www/html/cacti/plugins/weathermap/weathermap-cacti-plugin-mgmt.php(70): weathermap_form_actions() #6 {main} thrown in file: /var/www/html/cacti/plugins/weathermap/lib/datasources/SNMP2c.php on line: 26

[TheWitness]

Can you upload that plugin file SNMP2c.php here. Thanks!

[msfraticelli]

Hello, thank you for your response. My access privileges do not allow me to upload php files. However I did download it from the following link:

https://github.com/howardjones/network-weathermap/blob/master/lib/Weathermap/Plugins/Datasources/SNMP2c.php

Regards,

[msfraticelli]

@TheWitness, perhaps I misunderstood your request. I'm pasting the SNMP2c.php source code.

`<?php
// Pluggable datasource for PHP Weathermap 0.9
// - return a live SNMP value

// doesn't work well with large values like interface counters (I think this is a rounding problem)
// - also it doesn't calculate rates. Just fetches a value.

// useful for absolute GAUGE-style values like DHCP Lease Counts, Wireless AP Associations, Firewall Sessions
// which you want to use to colour a NODE

// You could also fetch interface states from IF-MIB with it.

// TARGET snmp2c:public:hostname:1.3.6.1.4.1.3711.1.1:1.3.6.1.4.1.3711.1.2
// (that is, TARGET snmp:community:host:in_oid:out_oid

// http://feathub.com/howardjones/network-weathermap/+2
namespace Weathermap\Plugins\Datasources;

use Weathermap\Core\MapUtility;

/**

• SNMPv2c data collection

• @Package Weathermap\Plugins\Datasources
  */
  class SNMP2C extends Base
  {
  protected $downCache;

  public function __construct()
  {
  parent::__construct();

   $this->regexpsHandled = array(
       '/^snmp2c:([^:]+):([^:]+):([^:]+):([^:]+)$/'
   );
   $this->name = "SNMP2C";
  

  }

  public function init(&$map)
  {
  // We can keep a list of unresponsive nodes, so we can give up earlier
  $this->downCache = array();

   if (function_exists('snmp2_get')) {
       return true;
   }
   MapUtility::debug("SNMP2c DS: snmp2_get() not found. Do you have the PHP SNMP module?\n");
  
   return false;
  

  }

  public function register($targetstring, &$map, &$item)
  {
  parent::register($targetstring, $map, $item);

   if (preg_match($this->regexpsHandled[0], $targetstring, $matches)) {
       // make sure there is a key for every host in the down_cache
       $host = $matches[2];
       $this->downCache[$host] = 0;
   }
  

  }

  public function readData($targetString, &$map, &$mapItem)
  {
  $this->data[IN] = null;
  $this->data[OUT] = null;

   $timeout = 1000000;
   $retries = 2;
   $abortCount = 0;
  
   $inResult = null;
   $outResult = null;
  
   $timeout = intval($map->getHint("snmp_timeout", $timeout));
   $abortCount = intval($map->getHint("snmp_abort_count", $abortCount));
   $retries = intval($map->getHint("snmp_retries", $retries));
  
   MapUtility::debug("Timeout changed to " . $timeout . " microseconds.\n");
   MapUtility::debug("Will abort after $abortCount failures for a given host.\n");
   MapUtility::debug("Number of retries changed to " . $retries . ".\n");
  
   if (preg_match("/^snmp2c:([^:]+):([^:]+):([^:]+):([^:]+)$/", $targetString, $matches)) {
       $community = $matches[1];
       $host = $matches[2];
       $inOID = $matches[3];
       $outOID = $matches[4];
  
       if (($abortCount == 0)
           || (
               ($abortCount > 0)
               && (!isset($this->downCache[$host]) || intval($this->downCache[$host]) < $abortCount)
           )
       ) {
           if (function_exists("snmp_get_quick_print")) {
               $was = snmp_get_quick_print();
               snmp_set_quick_print(1);
           }
           if (function_exists("snmp_get_valueretrieval")) {
               $was2 = snmp_get_valueretrieval();
           }
  
           if (function_exists('snmp_set_oid_output_format')) {
               snmp_set_oid_output_format(SNMP_OID_OUTPUT_NUMERIC);
           }
           if (function_exists('snmp_set_valueretrieval')) {
               snmp_set_valueretrieval(SNMP_VALUE_PLAIN);
           }
  
           if ($inOID != '-') {
               $inResult = snmp2_get($host, $community, $inOID, $timeout, $retries);
               if ($inResult !== false) {
                   $this->data[IN] = floatval($inResult);
                   $mapItem->addHint("snmp_in_raw", $inResult);
               } else {
                   $this->downCache{$host}++;
               }
           }
           if ($outOID != '-') {
               $outResult = snmp2_get($host, $community, $outOID, $timeout, $retries);
               if ($outResult !== false) {
                   // use floatval() here to force the output to be *some* kind of number
                   // just in case the stupid formatting stuff doesn't stop net-snmp returning 'down' instead of 2
                   $this->data[OUT] = floatval($outResult);
                   $mapItem->addHint("snmp_out_raw", $outResult);
               } else {
                   $this->downCache{$host}++;
               }
           }
  
           MapUtility::debug("SNMP2c ReadData: Got $inResult and $outResult\n");
  
           $this->dataTime = time();
  
           if (function_exists("snmp_set_quick_print")) {
               snmp_set_quick_print($was);
           }
           if (function_exists("snmp_set_valueretrieval")) {
               snmp_set_valueretrieval($was2);
           }
       } else {
           MapUtility::warn("SNMP for $host has reached $abortCount failures. Skipping. [WMSNMP01]");
       }
   }
  
   return $this->returnData();
  

  }
  }

// vim:ts=4:sw=4:
`

[msfraticelli]

@TheWitness, I apologize for the follow up. Just wondering if there's a possibility on taking a look on why the SNMP2C php file causes the Weathermap plugin to disable.

Regards,

[TheWitness]

I'm working on this now. The file you have is incorrect but pulled down from Howies work I'm guessing. I'm in the middle of updating the files from Howies upstream, but I need you to test. Can you do that?

[TheWitness]

The current development has brought in from upstream the latest versions of these files. The versions you brought it were from a more recent version and would not work 100% with Cacti as they were reliant on the php-snmp module, which we don't recommend due to it's lack of advanced feature support in the php-snmp module presently.