Re: [snips-users] PHP Code to Read SNIPS Data Files

[Russell Van Tassell <russell at loosenut com>]

On Thu, Jul 24, 2003 at 09:55:41AM -0400, Jerry Wilborn wrote:
> If you ever wanted to read events directly from SNIPS data files with native
> PHP code here is what you would use to do it.  I'm sure my code could stand
> some improvements, I certainly welcome them if anyone has any.
> 
>   [Copy of code deleted]
> 
> Jerry Wilborn, Network Operations Analyst
> FASTNET - Internet Solutions
> 610-266-6700
> www.fast.net


I've taken the liberty of making some minor modifications (mostly just
for readability and to combat minor warnings).  I've run this under PHP
4.3.2 against SNIPS 1.2b2...  if you would like, I can add this in to
the "contrib" section under CVS.

Russell


-- 
Russell M. Van Tassell
russell at loosenut com

 "Good news.  Ten weeks from Friday will be a pretty good day."

<?PHP
 /**********************************************************************
  *
  * Author: Jerry Wilborn <jerry wilborn at corp.fast.net>
  *         Network Operations Analyst
  *         FASTNET - Internet Solutions
  *         610-266-6700
  *         www.fast.net
  *
  * 2003 24 Jul
  *
  * PHP Code to Read SNIPS Data Files
  *
  *
  * Modification History:
  *  2003 25 Jul - Russell M. Van Tassell <russell at loosenut com>
  *    - added this header and user-settable variables
  *    - cleaned up code for readability on an 80 column screen
  *    - renamed some long variable names (for readability)
  *    - Added simple comments
  *    - fixed some warnings (against PHP 4.3.2 and SNIPS 1.2b2)
  *
  *********************************************************************/

//
// The data file we'll open...
//$DATA_FILE = "./data/ippingmon-output";
$DATA_FILE = "/usr/local/nocol/data/ippingmon-output";

//
// You should not need to edit anything beyond this line...
//----------------------------------------------------------------------


// Open the data file for reading, assign it the filehandle "fh."
if ( ! $fh = fopen( "${DATA_FILE}", "r" ) ){
  die( "DIE: Could not open file.\n" );
}

// Just read the header in to a junk variable...
$header = string_unpack( $fh, "a*", 372 );

// Prime eventNo so we can increment this later...
$eventNo = 0;

//
// Read through file until EOF...
while ( ! feof( $fh ) ){

  // Increment the event/line number... make sure it exists first...
  ++$eventNo;

  $event[$eventNo]['sender'] = string_unpack( $fh, "a*", 16 );

  // Make sure we were able to unpack a "sender" as a "valid event"
  if ( ! $event[$eventNo]['sender']) {
    unset( $event[$eventNo] );
    continue;
  }


  //
  // Create an array of associative arrays, based on contents of the file
  $event[$eventNo]['device_name']    = string_unpack( $fh, "a*",  64 );
  $event[$eventNo]['device_addr']    = string_unpack( $fh, "a*", 128 );
  $event[$eventNo]['device_subaddr'] = string_unpack( $fh, "a*",  64 );

  $event[$eventNo]['var']            = string_unpack( $fh, "a*",  64 );
  $event[$eventNo]['value']          = string_unpack( $fh,  "L",   4 );
  $event[$eventNo]['threshold']      = string_unpack( $fh,  "L",   4 );
  $event[$eventNo]['var_units']      = string_unpack( $fh, "a*",   8 );

  $event[$eventNo]['severity']       = ord( fread( $fh, 1 ) );
  $event[$eventNo]['loglevel']       = ord( fread( $fh, 1 ) );
  $event[$eventNo]['state']          = ord( fread( $fh, 1 ) );
  $event[$eventNo]['rating']         = ord( fread( $fh, 1 ) );

  $event[$eventNo]['eventtime']      = string_unpack( $fh,  "L",   4 );
  $event[$eventNo]['polltime']       = string_unpack( $fh,  "L",   4 );

  $event[$eventNo]['op']             = string_unpack( $fh,  "L",   4 );
  $event[$eventNo]['id']             = string_unpack( $fh,  "L",   4 );
}

// Format output to be read using a browser...
print( "\n<PRE>\n" );
var_dump( $event );
print( "</PRE>\n" );


//----------------------------------------------------------------------
//

function
string_unpack( $fh, $method, $length )

//
// Unpack the data in to something more user-friendly...
//

{
  return implode( "", unpack( $method, fread( $fh, $length ) ) );
}

//----------------------------------------------------------------------
?>