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Creating SNMP Class

Hacking classes 

I have started a project. Where I write a script
every day. Today I decided to make a class from some functions I created. 

I'm getting ready for a presentation at the Houston Linux User group
meeting
"Using ucd-snmp-utils" as a result of playing with the command line tools,
I 
started hacking php's snmp functions again. In a previous script I created
some 
basic functions, this is an upgrade of that code...

Why a script every day... 

I've only been coding php for about 2.5 years. (Still learning..)

The more I code the better I get..

There are no comments... just code...
Example Output

Create a file called phpsnmpclass.php

<?php

// Playing with classes

class phpsnmpUtils {

   var $community;
   var $sysname;
   var $ipaddr;



function pageHeader($title) {

print "
<HTML>
        <!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.0
Transitional//EN\">

        <HEAD>
        <TITLE>".$title."</TITLE>
        </HEAD>
        <BODY BGCOLOR=\"#ffffff\">

    <P>
  
    <CENTER>
    <TABLE BGCOLOR=#000000 CELLSPACING=0 CELLPADDING=2 ALIGN=CENTER
     BORDER=0 VALIGN=MIDDLE ><TR><TD BGCOLOR=#ffffff>

    <TABLE BORDER=0 CELLSPACING=2 CELLPADDING=2 ALIGN=CENTER
     VALIGN=CENTER BGCOLOR=#dddddd WIDTH=100%><TR><TD>
  
      <TABLE WIDTH=100% CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER
       VALIGN=TOP BORDER=0><TR BGCOLOR=#0022cf>
       <TD BGCOLOR=#ffffff>
       <CENTER><FONT FACE=\"Arial, Helvetica, Verdana\"
        SIZE=+1 ><B> </B></FONT></CENTER>
      </TD>
      <TD BGCOLOR=#ffffff ALIGN=RIGHT WIDTH=32>".date("m d,
Y")."</TD></TR>
      </TABLE>
        <P>
        <center>
        <P>";
}

  function pageFooter() {
        print " 

           </center>
           <hr width=535>


          </TD>
          </TR>
          </TABLE>



          </TD></TR></TABLE>
          </TD></TR></TABLE>
          </CENTER>
          </BODY></HTML>
           ";
}


///////////////////////////////////////////////////////////////////////////////////////


   function format_bytesize( $kbytes, $dec_places = 2 ) {

        if ( $kbytes > 1048576 ) {
                $result  = sprintf("%." . $dec_places . "f", $kbytes /
1048576 );
                $result .= ' GB';
        } elseif ( $kbytes > 1024 ) {
                $result  = sprintf("%." . $dec_places . "f", $kbytes /
1024 );
                $result .= ' MB';
        } else {
                $result  = sprintf("%." . $dec_places . "f", $kbytes );
                $result .= ' KB';
        }

        return $result;
}

///////////////////////////////////////////////////////////////////////////////////////

   function systemSection($ipaddr) {
     // Get the most useful info 
     $sysdescr =
@snmpget("$this->ipaddr","$this->community","system.sysDescr.0");
     $sysobjectid =
@snmpget("$this->ipaddr","$this->community","system.sysObjectID.0");
     $sysuptime =
@snmpget("$this->ipaddr","$this->community","system.sysUptime.0");
     $syscontact =
@snmpget("$this->ipaddr","$this->community","system.sysContact.0");
     // $sysname =
@snmpget("$this->ipaddr","$this->community","system.sysName.0");
     $syslocation =
@snmpget("$this->ipaddr","$this->community","system.sysLocation.0");
 

        print "<table border=1 cellspacing=1 width=535>";
        print "<tr>";
        print "<td colspan=2 bgcolor=#000080><font
color=#ffffff><b>";
        print "Report for
SWITCHNAME:".$this->sysname."</b></font></td></tr></table>";
        print "<table border=0 cellspacing=3 width=535>";
        print "<tr>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print "<tr>";
        print "<td><u>sysName</u>:</td>";
        print "<td>". $this->sysname ."</td>";
        print "</tr>";
        print "</table>";
        print "</td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print "<tr><td><u>Uptime</u>:</td>";
        print "<td>";
        print $sysuptime;
        print
"</td></tr></table></td></tr>";
        print "<tr><td colspan=2 bgcolor=#bbbbbb><table
border=0";
        print
"cellspacing=0><tr><td><u>Location</u>:</td>";
        print
"<td>". $syslocation."</td></tr></table></td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print
"<tr><td><u>Contact</u>:</td><td>". $syscontact
."</td></tr>";
        print "</table></td></tr>";
        print "<tr><td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print "<tr><td> </td>";
        print "<td width=5%> </td>";
        print "</tr></table>";
        print "</td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0
cellspacing=0><tr><td> </td>";
        print "<td width=5%> </td>";
        print "</tr></table></td></tr>";
        print "</table>";

} // End of systemSection


   function interfaceIfTable($ipaddr) {
    

     /* Get the interface index. create an array to get data */  
     /* interfaces.ifTable.ifEntry.ifIndex translated using snmptranslate
*/
   
     $interfaces =
snmpwalk("$this->ipaddr","$this->community",".");
     $ipaddres =
snmpwalk("$this->ipaddr","$this->community",".");
     $netmask =
snmpwalk("$this->ipaddr","$this->community",".");

     for($i=0; $i < count($interfaces); $i++) {
       $inface =
snmpget("$this->ipaddr","$this->community","..$interfaces[$i]");
       $infacetype =
snmpget("$this->ipaddr","$this->community","..$interfaces[$i]");
       $inoctets =
snmpget("$this->ipaddr","$this->community",".0.$interfaces[$i]");
       $outoctets =
snmpget("$this->ipaddr","$this->community",".6.$interfaces[$i]");
       $inerrors =
snmpget("$this->ipaddr","$this->community",".4.$interfaces[$i]");
       $outerrors =
snmpget("$this->ipaddr","$this->community",".0.$interfaces[$i]");
       $speed =
snmpget("$this->ipaddr","$this->community","..$interfaces[$i]");
       $physaddress =
snmpget("$this->ipaddr","$this->community","..$interfaces[$i]");
       $portstatus =
snmpget("$this->ipaddr","$this->community","..$interfaces[$i]");
       /* Clean up Interface strip Hex: */
       
       $inface = ereg_replace("Hex:","",$inface);
       $inface = ereg_replace("\"","",$inface);
       $inoctets = $this->format_bytesize($inoctets,0);
       $outoctets = $this->format_bytesize($outoctets,0);
       $ipaddres[$i] = ereg_replace("IpAddress:","",$ipaddres[$i]);       
       $netmask[$i] = ereg_replace("IpAddress:","",$netmask[$i]);       
       $speed = ereg_replace("Gauge:","",$speed);       
       $physaddress = ereg_replace("Hex:","",$physaddress);       

        print "<table border=1 cellspacing=1 width=535>
        <tr><td colspan=2 bgcolor=#000080>
        <font color=#ffffff>
        <b>Interface Information for ".$inface.".</b>
        </font></td></tr>
        </table>";

        print "<table border=0 cellspacing=3 width=535>
        <tr><td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0><tr>
        <td><u>Description</u>:</td><td
align=right>".$inface ."</td>
        </tr></table>
        </td><td colspan=2 bgcolor=#bbbbbb>
        <table border=0
cellspacing=0><tr><td><u>Type</u>:</td>
        <td>".$infacetype."</td>
        </tr></table>
        </td></tr>
        <tr><td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0>
        <tr><td><u>Port
Speed</u>:</td><td>".substr($speed,0,3)."</td>
        </tr></table></td><td colspan=2
bgcolor=#bbbbbb>
        <table border=0
cellspacing=0> <tr><td><u>PhysAddress</u>:</td><td>".$physaddress."</td>
        </tr></table></td></tr>
        <tr><td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0><tr>
        <td>IpAddr:</td><td
width=5%>".$ipaddres[$i]."</td>
        </tr></table></td>
        <td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0>
        <tr><td>Netmask:</td><td
width=5%>".$netmask[$i]."</td></tr>
        </table></td>
        </tr>
        </table>
        <P>
        <table border=1 cellspacing=1 width=535>
        <tr><td colspan=2 bgcolor=#000080>
        <font color=#ffffff><b>Interface Traffic
Information:  </b></font>
        </td></tr></table>
        
        <table border=0 cellspacing=3 width=535>
        <tr><td colspan=2 bgcolor=#bbbbbb><table border=0
cellspacing=0>

<tr><td><u>InOctets</u>:</td><td>".$inoctets."</td>
        </tr></table>
        </td><td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0>

<tr><td><u>OutOctets</u>:</td><td>".$outoctets."</td>
        </tr></table></td></tr>
        <tr><td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0><tr>
        <td><u>InErrors</u>:</td><td
width=5%>".$inerrors."</td>
        </tr></table></td>
        <td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0>
        <tr><td><u>OutErrors</u>:</td><td
width=5%>".$outerrors."
        </td></tr></table></td></tr>
        <tr><td colspan=2 bgcolor=#bbbbbb><table border=0
cellspacing=0>
        <tr><td><u>Port
Status</u>:</td><td
width=5%>".trim($portstatus)."</td>
        </tr></table></td>
        <td colspan=2 bgcolor=#bbbbbb>
        <table border=0 cellspacing=0>
        <tr><td><u>Last Change</u></td>
        <td width=5%>".$lastchange."</td></tr>
        </table></td></tr>
        </table> ";
       }
       
   // print "</TABLE>";  
}  // End of interfaceIfTable


function icmpSection($ipaddr) {
  
  $icmpInMsgs =
snmpget("$this->ipaddr","$this->community","icmp.icmpInMsgs.0");
  $icmpOutMsgs =
snmpget("$this->ipaddr","$this->community","icmp.icmpOutMsgs.0");
  $icmpInErrors =
snmpget("$this->ipaddr","$this->community","icmp.icmpInErrors.0");
  $icmpOutErrors =
snmpget("$this->ipaddr","$this->community","icmp.icmpOutErrors.0");
  $icmpInEchos =
snmpget("$this->ipaddr","$this->community","icmp.icmpInEchos.0");
  $icmpOutEchos =
snmpget("$this->ipaddr","$this->community","icmp.icmpOutEchos.0");
  
  $icmpInMsgs = $this->format_bytesize($icmpInMsgs,0);
  $icmpOutMsgs = $this->format_bytesize($icmpOutMsgs,0);
  $icmpInEchos = $this->format_bytesize($icmpInEchos,0);
  $icmpOutEchos = $this->format_bytesize($icmpOutEchos,0);

        print "<table border=1 cellspacing=1 width=535>";
        print "<tr>";
        print "<td colspan=2 bgcolor=#000080><font
color=#ffffff><b>";
        print "ICMP information for
: ".$this->sysname."</b></font></td></tr></table>";
        print "<table border=0 cellspacing=3 width=535>";
        print "<tr>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print "<tr>";
        print "<td><u>icmpInMsgs</u>:</td>";
        print "<td>". $icmpInMsgs ."</td>";
        print "</tr>";
        print "</table>";
        print "</td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print
"<tr><td><u>icmpOutMsgs</u>:</td>";
        print "<td>";
        print $icmpOutMsgs;
        print
"</td></tr></table></td></tr>";
        print "<tr><td colspan=2 bgcolor=#bbbbbb><table
border=0";
        print
"cellspacing=0><tr><td><u>icmpInErrors</u>:</td>";
        print
"<td>". $icmpInErrors."</td></tr></table></td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print
"<tr><td><u>icmpOutErrors</u>:</td><td>". $icmpOutErrors
."</td></tr>";
        print "</table></td></tr>";
        print "<tr><td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0 cellspacing=0>";
        print "<tr><td>icmpInEchos</td>";
        print "<td width=5%>".$icmpInEchos."</td>";
        print "</tr></table>";
        print "</td>";
        print "<td colspan=2 bgcolor=#bbbbbb>";
        print "<table border=0
cellspacing=0><tr><td>icmpOutEchos</td>";
        print "<td width=5%>".$icmpOutEchos."</td>";
        print "</tr></table></td></tr>";
        print "</table>";
} // End imcpSection


} // End of Class phpsnmpUtils

?>


Now we create a script to use the class

<?php

require('phpsnmpclass.php');


$app = new phpsnmpUtils;
$app->pageHeader("PHP SNMP Class");
$app->ipaddr = "";
$app->community = "public";

$app->sysname =
@snmpget("$app->ipaddr","$app->community","system.sysName.0");

$app->systemSection("$app->ipaddr");
$app->interfaceIfTable("$app->ipaddr");
$app->icmpSection("$app->ipaddr");
$app->pageFooter();
?>

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