#!/usr/bin/php
<?php
/*
 * Web: http://oskibbe.blogspot.de
 *
 * Check Beronet SNMP Values
 *
 * @date: 2013-07-15
 * @author: oliskibbe (at) gmail.com
 */
/*
 * BASE OID of Beronet
 * '1.3.6.1.4.1.29886.
 * Layer 1 Error: 	.enterprises.29886.0.10.2.1.1.4
 * Layer 2 Error: 	.enterprises.29886.0.10.2.1.1.2
 * Port State (L1): 	.enterprises.29886.0.10.4.1.1.4
 * Port State (L2): 	.enterprises.29886.0.10.4.1.1.3
 * Protocol: 		.enterprises.29886.0.10.4.1.1.2
 * Termination: 	.enterprises.29886.0.10.4.1.1.1
 * Total Calls: 	.enterprises.29886.0.10.1.1.1.3
 * Average calltime:	.enterprises.29886.0.10.1.1.1.4
 * Current calls:	.enterprises.29886.0.10.1.1.1.2
 * Uptime: 		.enterprises.29886.0.9.1
 * CPU Load:		.enterprises.29886.0.11.1.1.3
 * Memory Total:	.enterprises.29886.0.12.1.1.1
 * Memory Used:		.enterprises.29886.0.12.1.1.2
 * Serialnumber:	.enterprises.29886.0.2
 * Revision:		.enterprises.29886.0.3
 * Firmware:		.enterprises.29886.0.5
 * FPGA Version:	.enterprises.29886.0.6
 */
 
function formattime ( $seconds ) {
	$minutes = floor($seconds / 60);
        $secs = $seconds % 60;
        
            if ($minutes >= 60) {
                $hours = floor($seconds / 3600);                
                if ($hours >= 24) {
                    $days = floor($hours / 24); 
                    $hours = $hours % 24;                                       
                }
                $minutes = ($minutes % 60) % 60;
                $formatedUptime = $hours . "h " . $minutes . "min " . $secs . "sec";
                if ($days) {
                    $formatedUptime = $days ."d ".$formatedUptime;
                }
            } else if ($minutes >= 1) {
                $formatedUptime = $minutes . "min " . $secs . "sec";
            } else {
                $formatedUptime = $secs . "sec";
            }

    return $formatedUptime;
}

function help () {
        echo "This Plugin was developed by Oliver Skibbe - oliskibbe (at) gmail.com

!required packages: php-cli, php5-snmp!

Usage: ".$_SERVER['argv'][0]." ip community command

ip                      - ip of beronet media gateway

community               - snmp community of beronet media gateway

command:
        errors      - checks if there are physical layer error      - sends perfdata
        portstate   - checks portstate of modules (UP, DOWN)
        calls       - displays total calls and average connection   - sends perfdata
        current     - displays current calls                        - sends perfdata
        load        - displays load (cpu,memory): crit if over 80%  - sends perfdata
        info        - always ok. prints version (FPGA,Firmware), revision and serial of beronet media gateway
        uptime      - always ok. prints uptime of beronet media gateway
";
}



if(!extension_loaded("snmp")) {
	if (!dl("snmp.so") {
		echo "PHP SNMP extension could not be loaded...please check if it's installed!";
		help();
        exit ( 3 );
	}
}


snmp_set_quick_print ( true );
snmp_set_valueretrieval(SNMP_VALUE_PLAIN);

if ( $_SERVER['argc'] < 4 ) {
	help();
    exit ( 3 );
}



$ip = $_SERVER['argv'][1];
$community = $_SERVER['argv'][2];
$command = $_SERVER['argv'][3];

switch ( $command ) {
	case "errors":	
		$warn = $_SERVER['argv'][4];
		$crit = $_SERVER['argv'][5];
		$i = 0;
		$j = 0;
		$retMsg = "";
		$perfMsg = "";
		
		$port = array();
		
		$l1error = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.2.1.1.4' );
		$l2error = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.3.1.1.2' );
	
	
		if ( $l1error === FALSE || $l2error === FALSE ) {
			echo "Could not read data!\n";
			exit(2);			
		}
					    
	    foreach ($l1error as $l1 ) 
	    {
	        $port[$i] = array($l1error[$i], $l2error[$i]);
	        $i++;   	        
	    }
	    
	    foreach ($port as $portErrors) 
	    {
	        $perfMsg .= " l1port{$j}={$portErrors[0]} l2port{$j}={$portErrors[1]}";
	        
		if ( $portErrors[0] > $crit || $portErrors[1] > $crit ) {
	                $retMsg .= "CRIT Port {$j} ({$portErrors[0]}/{$portErrors[1]}) ";                
                	$crit = 1;
		} else if ( $portErrors[0] > $warn || $portErrors[1] > $warn ) {
        	        $retMsg .= "WARN Port {$j} ({$portErrors[0]}/{$portErrors[1]}) ";                
	                $warn = 1;		    
		} else {
    			$retMsg .= "OK Port {$j} ({$portErrors[0]}/{$portErrors[1]}) ";
		    
		}
	    $j++;
	    }

        if ($warn == 1) {
            $ret = 1;
        } else if ($crit == 1) {
            $ret = 2;
        } else {
            $ret = 0;
        }
		    
		echo $retMsg."|".$perfMsg."\n";
		exit ( $ret );
	break;
	case "portstate":
		$i = 0;
		$j = 0;
		$retMsg = "";
		$perfMsg = "";
		
		$port = array();
		
		$portState = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.4.1.1.4' );
	    	$portProtocol = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.4.1.1.2' );
	    	$portTerm = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.4.1.1.2' );
	
		if ( $portState === FALSE ) {
			echo "Could not read data!\n";
			exit(2);			
		}
					    
	    	foreach ($portState as $porttmp ) 
	    	{
	    	    $port[$i] = array($portState[$i],$portProtocol[$i],$portTerm[$i]);
	    	    $i++;   	        
	    	}
	    
	    	foreach ($port as $portState) 
	    	{        
			if ( $portState[0] != "UP" && ( $portState[1] == "PTP"  || ( $portState[1] == "PMP" && $portState[2] == "NT" ) ) ) {
	                	$retMsg .= "CRIT Port {$j} ({$portState[1]}/{$portState[2]} IS DOWN ";                
                		$crit = 1;	    
		    	}
			$j++;
		}

        	if ($crit == 1) {
	            $ret = 2;
        	} else {
            		$retMsg .= "OK All port(s) ({$j}) are UP ";
            		$ret = 0;
        	}
		    
		echo $retMsg."\n";
		exit ( $ret );
	break;
	case "calls":
		$callsCompleted = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.1.1.1.3' );
		$averageCallTime = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.1.1.1.4' );
		
		if ( $callsCompleted === FALSE || $averageCallTime === FALSE ) {
			echo "Could not read data!\n";
			exit(2);
		}
        	$totalCalls = 0;
        	$averageTime = array(0,0,0);    

       		foreach ( $callsCompleted as $calls ) {
            		$totalCalls += $calls;
        	}
        	$i = 0;
        	foreach ( $averageCallTime as $avg ) {
        	        $avg = split(":",$avg);
        	        $averageTime[0] += $avg[0];
        	        $averageTime[1] += $avg[1];
        	        $averageTime[2] += $avg[2];
        	       $i++; 
        	}
                $hours = $averageTime[0] / $i;
                $minutes = ($averageTime[1] / $i) % 60;
                $seconds = ($averageTime[2] / $i) % 60;
                
		$retMsg = "There are {$totalCalls} completed calls with an average connection time of";
        
        	if ($hours > 0 ) {
			$retMsg .= " {$hours} h";
        	}
        
        	if ($minutes > 0 ) {
            		$retMsg .= " {$minutes} min";
       		}
        		
        	if ($seconds > 0 ) {
        	    $retMsg .= " {$seconds} secs";
        	}
        	echo $retMsg."| totalcalls={$totalCalls}\n";
		exit ( 0 );
	break;
	case "current":
		$currentCalls = @snmp2_walk ( $ip, $community, '.enterprises.29886.0.10.1.1.1.2' );
		
		if ( $currentCalls === FALSE ) {
			echo "Could not read data!\n";
			exit(2);
		}
        	$totalCurrentCalls = 0;  

        	foreach ( $currentCalls as $calls ) {
			$totalCurrentCalls += $calls;
        	}
                
		$retMsg = "There are currently {$totalCurrentCalls} calls | currentcalls={$totalCurrentCalls}\n";
        	echo $retMsg;
		exit (0);
	break;
	case "uptime":
		$seconds = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.9.1' );

		if ( $seconds === FALSE ) {
			echo "Could not read data!\n";
			exit(2);
		}

        	$formatedUptime = formattime($seconds);
            
		echo "Uptime is: {$formatedUptime}\n";
		exit (0);
	break;
	case "load":
		// TODO is load really a percentage value? have to ask beronet
		$cpu = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.11.1.1.3');
		$memTotal = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.12.1.1.1');
		$memFree = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.12.1.1.2');
		
		if ( $cpu === FALSE || $memTotal === FALSE || $memFree === FALSE ) {
			echo "Could not read data!\n";
			exit(2);
		}

		$memUsage = floor(( $memFree * 100 ) / $memTotal);
		if ( $memUsage > 80 || $cpu > 80 ) {
			$retString = "CRITICAL";
			$ret = 2;
		} else {
			$retString = "OK";
			$ret = 0;
		}
		// output in megabytes
		$memFree = floor($memFree / 1024);
		$memTotal = floor($memTotal / 1024);

		$perfMsg = "| freemem={$memFree} totalmem={$memTotal} cpu={$cpu}";
		$retMsg = $retString . " CPU: {$cpu}%  Memory: {$memUsage}% ({$memFree}/{$memTotal})"; 
		
		echo $retMsg . $perfMsg . "\n";
		exit($ret);
	break;
	case "version":		
		$serial = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.2');
		$revision = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.3');
		$appfsVersion = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.5');
		$fpgaVersion = @snmp2_getnext ( $ip, $community, '.enterprises.29886.0.6');

		if ( $appfsVersion === FALSE || $serial === FALSE || $revision === FALSE || $fpgaVersion === FALSE ) {
			echo "Could not read data!\n";
			exit(2);
		}

		echo "Firmware: {$appfsVersion} FPGA: {$fpgaVersion} Revision: {$revision} Serial: {$serial}\n";
		exit(0);
	break;
}




?>