How do you interpret a bit string using sharp snmp lib (hrPrinterDetectedErrorState)?

Question

How do you interpret hrPrinterDetectedErrorState (http://cric.grenoble.cnrs.fr/Administrateurs/Outils/MIBS/?oid=1.3.6.1.2.1.25.3.5.1.2) or something like it using Sharp Snmp lib? Is there some kind of bit string type? It's kind of a bitmask, but you may only receive one byte instead of two (or I've seen four bytes).

Impossible. To interpret BITS the MIB documents are mandatory and only #SNMP Pro has that kind of support. — Lex Li, Mar 02 '18 at 16:28
Thanks for the reply. Is there some generic #snmp method that converts a multiple byte octetstring into bits (or an integer)? — js2010, Mar 02 '18 at 16:42
GetRaw() returns a byte array. I was thinking of a single integer. — js2010, Mar 02 '18 at 17:20
In the case of hrPrinterDetectedErrorState, I would have to have 2 [flags] enum's instead of one, because there are 15 bits to test. — js2010, Mar 02 '18 at 17:28

score 0 · Answer 1 · answered Mar 28 '19 at 21:31

Did it on my own in powershell.

[flags()] Enum hrPrinterDetectedErrorState
{
  lowPaper            = 0x8000
  noPaper             = 0x4000
  lowToner            = 0x2000
  noToner             = 0x1000
  doorOpen            = 0x0800
  jammed              = 0x0400
  Offline             = 0x0200
  serviceRequested    = 0x0100

  inputTrayMissing    = 0x0080
  outputTrayMissing   = 0x0040
  markerSupplyMissing = 0x0020
  outputNearFull      = 0x0010
  outputFull          = 0x0008
  inputTrayEmpty      = 0x0004
  overduePreventMaint = 0x0002
  notUsed             = 0x0001
}

function snmpmessage($data) {

  $bytes = [byte[]][char[]]$data

  # pack up to two bytes into an int left to right
  $code = [int]$bytes[0]
  $code = $code -shl 8
  if ($bytes[1]) { $code = $code + $bytes[1] }

  [hrPrinterDetectedErrorState]$code

}

PS C:\> snmpmessage -join [char[]](0x91,0x04)
inputTrayEmpty, serviceRequested, noToner, lowPaper

How do you interpret a bit string using sharp snmp lib (hrPrinterDetectedErrorState)?

1 Answers1