Issue

Symptoms

When you run disocvery on printers, the description field on "discovery_printer_supplies" records have hex values instead of a string.

Release

Applicable to all releases

Cause

The printer supplies information is queried at the OID "1.3.6.1.2.1.43.11" from the SNMP - Printing probe.

If we are getting back a hex value from this probe, we are directly parsing this value from the payload and updating the description field on discovery_printer_supplies records. So you might see hex values in place of a string.

Resolution

Create an update/insert business rule on discovery_printer_supplies table. Make the business rule advanced and paste the following code:

--------------------------------------------------------------------------------

(function executeRule(current, previous /*null when async*/) {

var input = current.description
var nospace = input.replace(/\s/g, ''); //remove spaces from the hex value we have

regexp = /^[0-9a-fA-F]+$/;
var res = regexp.test(nospace); //validate if the value we have is hex

if (res == true){ //convert to string only if the value we have is hex
var string = '';
for (var i = 0; i < nospace.length; i += 2) {
string += String.fromCharCode(parseInt(nospace.substr(i, 2), 16));
}
current.description = string;
}

})(current, previous);