<?php
/**
 * SNMPups class
 *
 * PHP version 5
 *
 * @category  PHP
 * @package   PSI_UPS
 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License version 2, or (at your option) any later version
 * @version   SVN: $Id: class.apcupsd.inc.php 661 2012-08-27 11:26:39Z namiltd $
 * @link      http://phpsysinfo.sourceforge.net
 */
 /**
 * getting ups information from SNMPups program
 *
 * @category  PHP
 * @package   PSI_UPS
 * @author    Michael Cramer <BigMichi1@users.sourceforge.net>
 * @author    Artem Volk <artvolk@mail.ru>
 * @copyright 2009 phpSysInfo
 * @license   http://opensource.org/licenses/gpl-2.0.php GNU General Public License version 2, or (at your option) any later version
 * @version   Release: 3.0
 * @link      http://phpsysinfo.sourceforge.net
 */
class SNMPups extends UPS
{
    /**
     * internal storage for all gathered data
     *
     * @var array
     */
    private $_output = array();

    /**
     * get all information from all configured ups in phpsysinfo.ini and store output in internal array
     */
    public function __construct()
    {
        parent::__construct();
        switch (strtolower(PSI_UPS_SNMPUPS_ACCESS)) {
        case 'command':
                if (defined('PSI_UPS_SNMPUPS_LIST') && is_string(PSI_UPS_SNMPUPS_LIST)) {
                    if (preg_match(ARRAY_EXP, PSI_UPS_SNMPUPS_LIST)) {
                        $upss = eval(PSI_UPS_SNMPUPS_LIST);
                    } else {
                        $upss = array(PSI_UPS_SNMPUPS_LIST);
                    }
                    foreach ($upss as $ups) {
                        CommonFunctions::executeProgram("snmpwalk", "-Ona -c public -v 1 -t ".PSI_SNMP_TIMEOUT_INT." -r ".PSI_SNMP_RETRY_INT." ".$ups." .1.3.6.1.4.1.318.1.1.1.1", $buffer, PSI_DEBUG);
                        if (strlen($buffer) > 0) {
                            $this->_output[$ups] = $buffer;
                            $buffer = "";
                            CommonFunctions::executeProgram("snmpwalk", "-Ona -c public -v 1 -t ".PSI_SNMP_TIMEOUT_INT." -r ".PSI_SNMP_RETRY_INT." ".$ups." .1.3.6.1.4.1.318.1.1.1.2", $buffer, PSI_DEBUG);
                            if (strlen($buffer) > 0) {
                                $this->_output[$ups] .=  "\n".$buffer;
                            }
                            $buffer = "";
                            CommonFunctions::executeProgram("snmpwalk", "-Ona -c public -v 1 -t ".PSI_SNMP_TIMEOUT_INT." -r ".PSI_SNMP_RETRY_INT." ".$ups." .1.3.6.1.4.1.318.1.1.1.3", $buffer, PSI_DEBUG);
                            if (strlen($buffer) > 0) {
                                $this->_output[$ups] .=  "\n".$buffer;
                            }
                            $buffer = "";
                            CommonFunctions::executeProgram("snmpwalk", "-Ona -c public -v 1 -t ".PSI_SNMP_TIMEOUT_INT." -r ".PSI_SNMP_RETRY_INT." ".$ups." .1.3.6.1.4.1.318.1.1.1.4", $buffer, PSI_DEBUG);
                            if (strlen($buffer) > 0) {
                                $this->_output[$ups] .=  "\n".$buffer;
                            }
                        }
                    }
                }
                break;
        case 'php-snmp':
                if (!extension_loaded("snmp")) {
                    $this->error->addError("Requirements error", "SNMPups plugin requires the snmp extension to php in order to work properly");
                    break;
                }
                snmp_set_valueretrieval(SNMP_VALUE_LIBRARY);
                snmp_set_oid_output_format(SNMP_OID_OUTPUT_NUMERIC);
                if (defined('PSI_UPS_SNMPUPS_LIST') && is_string(PSI_UPS_SNMPUPS_LIST)) {
                    if (preg_match(ARRAY_EXP, PSI_UPS_SNMPUPS_LIST)) {
                        $upss = eval(PSI_UPS_SNMPUPS_LIST);
                    } else {
                        $upss = array(PSI_UPS_SNMPUPS_LIST);
                    }
                    foreach ($upss as $ups) {
                        if (! PSI_DEBUG) {
                            restore_error_handler(); /* default error handler */
                            $old_err_rep = error_reporting();
                            error_reporting(E_ERROR); /* fatal errors only */
                        }
                        $bufferarr=snmprealwalk($ups, "public", ".1.3.6.1.4.1.318.1.1.1.1", 1000000 * PSI_SNMP_TIMEOUT_INT, PSI_SNMP_RETRY_INT);
                        if (! PSI_DEBUG) {
                            error_reporting($old_err_rep); /* restore error level */
                            set_error_handler('errorHandlerPsi'); /* restore error handler */
                        }
                        if (! empty($bufferarr)) {
                            $buffer="";
                            foreach ($bufferarr as $id=>$string) {
                                $buffer .= $id." = ".$string."\n";
                            }

                            if (! PSI_DEBUG) {
                                restore_error_handler(); /* default error handler */
                                $old_err_rep = error_reporting();
                                error_reporting(E_ERROR); /* fatal errors only */
                            }
                            $bufferarr2=snmprealwalk($ups, "public", ".1.3.6.1.4.1.318.1.1.1.2", 1000000 * PSI_SNMP_TIMEOUT_INT, PSI_SNMP_RETRY_INT);
                            $bufferarr3=snmprealwalk($ups, "public", ".1.3.6.1.4.1.318.1.1.1.3", 1000000 * PSI_SNMP_TIMEOUT_INT, PSI_SNMP_RETRY_INT);
                            $bufferarr4=snmprealwalk($ups, "public", ".1.3.6.1.4.1.318.1.1.1.4", 1000000 * PSI_SNMP_TIMEOUT_INT, PSI_SNMP_RETRY_INT);
                            if (! PSI_DEBUG) {
                                error_reporting($old_err_rep); /* restore error level */
                                set_error_handler('errorHandlerPsi'); /* restore error handler */
                            }
                            if (! empty($bufferarr2)) {
                                foreach ($bufferarr2 as $id=>$string) {
                                    $buffer .= $id." = ".$string."\n";
                                }
                            if (! empty($bufferarr3)) {
                                foreach ($bufferarr3 as $id=>$string) {
                                    $buffer .= $id." = ".$string."\n";
                                }
                            }                            }
                            if (! empty($bufferarr4)) {
                                foreach ($bufferarr4 as $id=>$string) {
                                    $buffer .= $id." = ".$string."\n";
                                }
                            }
                            if (strlen(trim($buffer)) > 0) {
                                $this->_output[$ups] = $buffer;
                            }
                        }
                    }
                }
                break;
            default:
                $this->error->addError("switch(PSI_UPS_SNMPUPS_ACCESS)", "Bad SNMPups configuration in phpsysinfo.ini");
                break;
        }
    }

    /**
     * parse the input and store data in resultset for xml generation
     *
     * @return Void
     */
    private function _info()
    {
        if (empty($this->_output)) {
            return;
        }
        foreach ($this->_output as $result) {
            $dev = new UPSDevice();
            $status = "";
            $status2 = "";
            $status3 = "";
            $dev->setMode("SNMP");
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.1\.1\.2\.0 = STRING:\s(.*)/m', $result, $data)) {
                $dev->setName(trim($data[1], "\" \r\t"));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.1\.1\.1\.0 = STRING:\s(.*)/m', $result, $data)) {
                $dev->setModel(trim($data[1], "\" \r\t"));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.4\.1\.1\.0 = INTEGER:\s(.*)/m', $result, $data)) {
                switch (trim($data[1])) {
                    case 1: $status = "Unknown";
                            break;
                    case 2: $status = "On Line";
                            break;
                    case 3: $status = "On Battery";
                            break;
                    case 4: $status = "On Smart Boost";
                            break;
                    case 5: $status = "Timed Sleeping";
                            break;
                    case 6: $status = "Software Bypass";
                            break;
                    case 7: $status = "Off";
                            break;
                    case 8: $status = "Rebooting";
                            break;
                    case 9: $status = "Switched Bypass";
                            break;
                    case 10:$status = "Hardware Failure Bypass";
                            break;
                    case 11:$status = "Sleeping Until Power Returns";
                            break;
                    case 12:$status = "On Smart Trim";
                            break;
                   default: $status = "Unknown state (".trim($data[1]).")";
                            break;
                }
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.1\.1\.0 = INTEGER:\s(.*)/m', $result, $data)) {
                $batstat = "";
                switch (trim($data[1])) {
                    case 1: $batstat = "Battery Unknown";
                            break;
                    case 2: break;
                    case 3: $batstat = "Battery Low";
                            break;
                   default: $batstat = "Battery Unknown (".trim($data[1]).")";
                            break;
                }
                if ($batstat !== "") {
                    if ($status !== "") {
                        $status .= ", ".$batstat;
                    } else {
                        $status = $batstat;
                    }
                }
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.2\.4\.0 = INTEGER:\s(.*)/m', $result, $data)) {
                $batstat = "";
                switch (trim($data[1])) {
                    case 1: break;
                    case 2: $batstat = "Replace Battery";
                            break;
                   default: $batstat = "Replace Battery (".trim($data[1]).")";
                            break;
                }
                if ($batstat !== "") {
                    if ($status !== "") {
                        $status .= ", ".$batstat;
                    } else {
                        $status = $batstat;
                    }
                }
            }
            if ($status !== "") {
               $dev->setStatus(trim($status));
            }

            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.3\.3\.1\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLineVoltage(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.3\.2\.1\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLineVoltage(trim($data[1]));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.4\.3\.3\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLoad(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.4\.2\.3\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLoad(trim($data[1]));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.3\.4\.0 = INTEGER:\s(.*)/m', $result, $data)) {
                $dev->setBatteryVoltage(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.2\.8\.0 = INTEGER:\s(.*)/m', $result, $data)) {
                $dev->setBatteryVoltage(trim($data[1]));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.3\.1\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setBatterCharge(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.2\.1\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setBatterCharge(trim($data[1]));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.2\.3\.0 = Timeticks:\s\((\d*)\)/m', $result, $data)) {
                $dev->setTimeLeft(trim($data[1])/6000);
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.3\.2\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setTemperatur(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.2\.2\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setTemperatur(trim($data[1]));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.2\.1\.3\.0 = STRING:\s(.*)/m', $result, $data)) {
                $dev->setBatteryDate(trim($data[1], "\" \r\t"));
            }
            if (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.3\.3\.4\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLineFrequency(trim($data[1])/10);
            } elseif (preg_match('/^\.1\.3\.6\.1\.4\.1\.318\.1\.1\.1\.3\.2\.4\.0 = Gauge32:\s(.*)/m', $result, $data)) {
                $dev->setLineFrequency(trim($data[1]));
            }

            $this->upsinfo->setUpsDevices($dev);
        }
    }

    /**
     * get the information
     *
     * @see PSI_Interface_UPS::build()
     *
     * @return Void
     */
    public function build()
    {
        $this->_info();
    }
}
