Subversion Repositories vnag

<?php /* <ViaThinkSoftSignature>

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</ViaThinkSoftSignature> */ ?>

<?php

/*

 * VNag - Nagios Framework for PHP

 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>

 * Licensed under the terms of the Apache 2.0 license

 *

 * Revision 2022-05-11

 */

declare(ticks=1);

class SmartCheck extends VNag {

        protected $argType = null;

        public function __construct() {

                parent::__construct();

                if ($this->is_http_mode()) {

                        // Don't allow the standard arguments via $_REQUEST

                        $this->registerExpectedStandardArguments('');

                } else {

                        $this->registerExpectedStandardArguments('Vhtv');

                }

                $this->getHelpManager()->setPluginName('vnag_smart');

                $this->getHelpManager()->setVersion('1.0');

                $this->getHelpManager()->setShortDescription('This plugin checks the contents of the SMART data and warns when a harddisk has failed.');

                $this->getHelpManager()->setCopyright('Copyright (C) 2011-$CURYEAR$ Daniel Marschall, ViaThinkSoft.');

                $this->getHelpManager()->setSyntax('$SCRIPTNAME$ [-T <type>]');

                $this->getHelpManager()->setFootNotes('If you encounter bugs, please contact ViaThinkSoft at www.viathinksoft.com');

                // TODO: also add a command to check a single drive   [ -d /dev/sda,/dev/sdb ]

                // Individual (non-standard) arguments:

                $this->addExpectedArgument($this->argType = new VNagArgument('T', 'type', VNagArgument::VALUE_REQUIRED, 'type', 'e.g. for RAID devices "sat+cciss,0" for drive 0.'));

        }

        private function check_smart($dev) {

                if (!`which which`) {

                        throw new VNagException("Program 'which' is not installed on your system");

                }

                if (!`which smartctl`) {

                        throw new VNagException("Program 'smartctl' (usually included in package smartmontools) is not installed on your system");

                }

                if (!`sudo cat /proc/cpuinfo`) {

                        // To make this work, please run "visudo" and add the following line:

                        // nagios ALL=NOPASSWD: /usr/sbin/smartctl

                        throw new VNagException("You don't have SUDO privileges. Please run 'visudo' and allow the command /usr/sbin/smartctl for user ".get_current_user().".");

                }

                $code = 0;

                $out = array();

                if ($this->argType->getValue() != '') {

                        exec('sudo smartctl --all '.escapeshellarg($dev).' -d '.escapeshellarg($this->argType->getValue()), $out, $code);

                } else {

                        exec('sudo smartctl --all '.escapeshellarg($dev), $out, $code);

                }

                $cont = implode("\n", $out);

                $msg = array();

                $status = -1;

                if (stripos($cont, 'device lacks SMART capability') !== false)  {

                        // At my system (Debian 9), I get exit code 4 (which is not fully accurate)

                        $msg[] = 'Device lacks SMART capability';

                        #$status = VNag::STATUS_UNKNOWN;

                } else if ($code == 0) {

                        $status = VNag::STATUS_OK;

                } else {

                        if ($code & 1) {

                                throw new Exception("smartctl reports 'command line did not parse' (code $code).");

                        }

                        if ($code & 2) {

                                $msg[] = "Device open failed. It is either completely defective, or in low-power mode.";

                                $status = max($status, VNag::STATUS_CRITICAL);

                        }

                        if ($code & 4) {

                                $msg[] = "SMART command failed or checksum is wrong.";

                                $status = max($status, VNag::STATUS_WARNING);

                        }

                        if ($code & 8) {

                                $msg[] = "SMART status returns 'DISK FAILING'";

                                $status = max($status, VNag::STATUS_CRITICAL);

                        }

                        if ($code & 16) {

                                $msg[] = "SMART found prefail attributes below threshold";

                                $status = max($status, VNag::STATUS_WARNING);

                        }

                        if ($code & 32) {

                                $msg[] = "SMART status is 'OK' but usage/prefail attributes have been below threshold in the past.";

                                $status = max($status, VNag::STATUS_WARNING);

                        }

                        if ($code & 64) {

                                $msg[] = "The device error log contains records of errors.";

                                $status = max($status, VNag::STATUS_WARNING);

                        }

                        if ($code & 128) {

                                $msg[] = "The self-test logs contains records of errors.";

                                $status = max($status, VNag::STATUS_WARNING);

                        }

                }

                $messages = implode(", ", $msg);

                if ($messages != '') $messages = ": $messages";

                if ($status == VNag::STATUS_CRITICAL) {

                        $this->addVerboseMessage("$dev (Critical)$messages", VNag::VERBOSITY_SUMMARY);

                } else if ($status == VNag::STATUS_WARNING) {

                        $this->addVerboseMessage("$dev (Warning)$messages", VNag::VERBOSITY_SUMMARY);

                } else if ($status == VNag::STATUS_OK) {

                        $this->addVerboseMessage("$dev (OK)$messages", VNag::VERBOSITY_ADDITIONAL_INFORMATION);

                } else {

                        $status = VNag::STATUS_UNKNOWN;

                        $this->addVerboseMessage("$dev (Unknown)$messages", VNag::VERBOSITY_SUMMARY);

                }

                $this->setStatus($status);

                return $status;

        }

        protected function cbRun() {

                $devices = array();

                $devices = array_merge($devices, glob('/dev/sd?'));

                $devices = array_merge($devices, glob('/dev/hd?'));

                if (count($devices) == 0) {

                        throw new Exception("No SDx or HDx drives found");

                }

                if (strpos($this->argType->getValue(),'cciss') !== false) {

                        $devices = array($devices[0]); // we just need a "fake" drive; the drive number is given as parameter to cciss

                }

                $count_total = 0;

                $count_ok = 0;

                $count_warning = 0;

                $count_critical = 0;

                $count_unknown = 0;

                foreach ($devices as $dev) {

                        $count_total++;

                        switch ($this->check_smart($dev)) {

                                case VNag::STATUS_OK:

                                        $count_ok++;

                                        break;

                                case VNag::STATUS_WARNING:

                                        $count_warning++;

                                        break;

                                case VNag::STATUS_CRITICAL:

                                        $count_critical++;

                                        break;

                                case VNag::STATUS_UNKNOWN:

                                        $count_unknown++;

                                        break;

                        }

                }

                $this->setHeadline(sprintf('Checked %d drives (%d OK, %d warning, %d critical, %d unknown)', $count_total, $count_ok, $count_warning, $count_critical, $count_unknown));

        }

}