This utility shows you disk utilization for a given storage device.
It performs a SNMP walk to gather the storage spaces that your system has. Then you simply click on the storage unit and it will show you its capacity, used space & free space. Presentation of data is in text and a pie chart.
Default settings are the lpbk int (127.0.0.1) and community string is set to "public".
By : EvilivE
<?
function ListDevices(&$hostname, &$community){
echo "
<html>
<head>
<title>Storage Information</title>
<head>
<body>
<center>
<table cellpadding=0 cellspacing=0 border=1 width=100%>
<tr bgcolor=\"#e5e5e5\">
<td width=33% align=center>hrStorageIndex</td>
<td width=33% align=center>hrStorageType</td>
<td width=33% align=center>hrStorageDescr</td>
</tr>";
$hrStorageIndex = snmpwalk($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.1");
$hrStorageType = snmpwalk($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.2");
$hrStorageDescr = snmpwalk($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.3");
for($i = 0; $i < sizeof($hrStorageIndex); $i++){
echo "
<tr>
<td width=33% align=center><a href=\"".$_SERVER["PHP_SELF"]."?action=2&storageindex=".$hrStorageIndex[$i]."\">".$hrStorageIndex[$i]."</a></td>
<td width=33% align=center>";
$type = substr($hrStorageType[$i], strlen($hrStorageType[$i]) - 1);
switch($type){
case 0:
echo "Network Disk";
break;
case 1:
echo "Other";
break;
case 2:
echo "Ram";
break;
case 3:
echo "Vrtual Memory";
break;
case 4:
echo "Fixed Disk";
break;
case 5:
echo "Removable Disk";
break;
case 6:
echo "Floppy Disk";
break;
case 7:
echo "Compact Disk";
break;
case 8:
echo "Ram Disk";
break;
case 9:
echo "Flash Memory";
break;
default:
echo "Unknown";
}
echo " </td>
<td width=33% align=center>".$hrStorageDescr[$i]."</td>
</tr>";
}
echo "
</table>
</center>
</body>
</html>";
}
function DetailedInfo(&$hostname, &$community, $storageIndex){
echo "
<html>
<head>
<title>Disk Usage</title>
</head>
<body>";
$hrStorageDescr = snmpget($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.3.".$storageIndex);
$hrStorageSize = snmpget($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.5.".$storageIndex);
$hrStorageUsed = snmpget($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.6.".$storageIndex);
$hrStorageAllocationUnits = snmpget($hostname, $community, ".1.3.6.1.2.1.25.2.3.1.4.".$storageIndex);
$usedBytes = $hrStorageUsed * $hrStorageAllocationUnits;
$freeBytes = ($hrStorageSize - $hrStorageUsed) * $hrStorageAllocationUnits;
$capacity = $hrStorageSize * $hrStorageAllocationUnits;
$usedBytesPer = round(($usedBytes / $capacity) * 100, 2);
$freeBytesPer = round(($freeBytes / $capacity) * 100, 2);
$percentToImage = round(($usedBytes / $capacity) * 100);
echo "
<font face=\"Courier\" size=4 color=\"#000000\">
<center>
<table cellpadding=0 cellspacing=0 width=75% border=0>
<tr><td width=100% align=center colspan=4><b>".$hrStorageDescr."</b><br>Â </td></tr>";
if($capacity < 1073741824){
$usedMBytes = round($usedBytes / pow(2,20), 2);
$freeMBytes = round($freeBytes / pow(2,20), 2);
$capacityMBytes = round($capacity / pow(2,20), 2);
echo "
<tr>
<td width=20% align=right>Used Space:</td>
<td width=50% align=center>".number_format($usedBytes)." Bytes</td>
<td width=15% align=center>".$usedMBytes." MB</td>
<td width=15% align=center>".$usedBytesPer."%</td>
</tr>
<tr>
<td width=20% align=right>Free Space:</td>
<td width=50% align=center>".number_format($freeBytes)." Bytes</td>
<td width=15% align=center>".$freeMBytes." MB</td>
<td width=15% align=center>".$freeBytesPer."%</td>
</tr>
<tr>
<td width=20% align=right>Capacity:</td>
<td width=50% align=center>".number_format($capacity)." Bytes</td>
<td width=15% align=center>".$capacityMBytes." MB</td>
<td width=15% align=center>Â </td>
</tr>";
} else {
$usedGBytes = round($usedBytes / pow(2,30), 2);
$freeGBytes = round($freeBytes / pow(2,30), 2);
$capacityGBytes = round($capacity / pow(2,30), 2);
echo "
<tr>
<td width=20% align=right>Used Space:</td>
<td width=50% align=center>".number_format($usedBytes)." Bytes</td>
<td width=15% align=center>".$usedGBytes." GB</td>
<td width=15% align=center>".$usedBytesPer."%</td>
</tr>
<tr>
<td width=20% align=right>Free Space:</td>
<td width=50% align=center>".number_format($freeBytes)." Bytes</td>
<td width=15% align=center>".$freeGBytes." GB</td>
<td width=15% align=center>".$freeBytesPer."%</td>
</tr>
<tr>
<td width=20% align=right>Capacity:</td>
<td width=50% align=center>".number_format($capacity)." Bytes</td>
<td width=15% align=center>".$capacityGBytes." GB</td>
<td width=15% align=center>Â </td>
</tr>";
}
echo "
<tr>
<td width=100% align=center colspan=4>Â <p><img src=\"".$_SERVER["PHP_SELF"]."?action=3&percent=".$percentToImage."\"></td>
</tr>
</table>
</center>
</font>
</body>
</html>";
}
function GD2DPie($perUsed){
$perFree = 100 - $perUsed;
$endUsed_startFree = ceil((360 / 100) * $perUsed);
$img = imagecreate(300, 300);
$bg = imagecolorallocate($img, 255, 255, 255);
$usedColor = imagecolorallocate($img, 0, 0, 200);
$freeColor = imagecolorallocate($img, 225, 0, 200);
imagearc($img, 150, 150, 250, 250, 0, $endUsed_startFree, $usedColor);
imageline($img, 150, 150, 275, 150, $usedColor);
imageline($img, 150 + (cos(deg2rad($endUsed_startFree))*(250/2)), 150 + (sin(deg2rad($endUsed_startFree))*(250/2)), 150, 150, $usedColor);
imagefilltoborder($img, 150 + (cos(deg2rad(($endUsed_startFree)/2))*(250/4)), 150 + (sin(deg2rad(($endUsed_startFree)/2))*(250/4)), $usedColor, $usedColor);
imagearc($img, 150, 150, 250, 250, $endUsed_startFree, 360, $freeColor);
imageline($img, 150 + (cos(deg2rad($endUsed_startFree))*(250/2)), 150 + (sin(deg2rad($endUsed_startFree))*(250/2)), 150, 150, $freeColor);
imageline($img, 150, 150, 275, 150, $freeColor);
imagefilltoborder($img, 150 + (cos(deg2rad(($endUsed_startFree+360)/2))*(250/4)), 150 + (sin(deg2rad(($endUsed_startFree+360)/2))*(250/4)), $freeColor, $freeColor);
header("Content-type = image/png");
imagepng($img);
imagedestroy($img);
}
$hostname = "127.0.0.1"; // change this accordingly
$community = "public"; // public is default but most likely not "public"
if (empty($_GET["action"])){
$action = 1;
} else {
$action = $_GET["action"];
}
switch($action){
case 1:
ListDevices($hostname, $community);
break;
case 2:
DetailedInfo($hostname, $community, $_GET['storageindex']);
break;
case 3:
GD2DPie($_GET['percent']);
break;
default:
die("Unable to process request!");
}
?>
DISCLAIMER: The content provided in this article is not warranted or guaranteed by Developer Shed, Inc. The content provided is intended for entertainment and/or educational purposes in order to introduce to the reader key ideas, concepts, and/or product reviews. As such it is incumbent upon the reader to employ real-world tactics for security and implementation of best practices. We are not liable for any negative consequences that may result from implementing any information covered in our articles or tutorials. If this is a hardware review, it is not recommended to open and/or modify your hardware.
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