# encoding: ascii
# api: powershell
# title: ConvertTo-DN
# description: A couple functions I use to convert DN to Canonical, and canonical to DN. I find them handy for adhoc AD tasks… I saw someone ask about it on #powershell and figured I would share :)
# version: 0.1
# type: function
# author: Glenn Sizemore glnsize
# license: CC0
# function: ConvertFrom-DN
# x-poshcode-id: 6445
# x-archived: 2016-09-16T11:48:09
# x-published: 2016-07-13T03:46:00
#
# Minor modifications to handle no OU present and multiple CN case e.g. CN=MyComputer,CN=Computers,DC=MyDomain,DC=Local
#
#Author: Glenn Sizemore glnsize@get-admin.com
#
#Purpose: Convert a DN to a Canonical name, and back again.
#
#Example: PS > ConvertFrom-Canonical 'get-admin.local/test/test1/Sizemore, Glenn E'
# CN=Sizemore\, Glenn E,OU=test1,OU=test,DC=getadmin,DC=local
# PS > ConvertFrom-DN 'CN=Sizemore\, Glenn E,OU=test1,OU=test,DC=getadmin,DC=local'
# get-admin.local/test/test1/Sizemore, Glenn E
function ConvertFrom-DN
{
param([string]$DN=(Throw '$DN is required!'))
foreach ( $item in ($DN.replace('\,','~').split(",")))
{
switch -regex ($item.TrimStart().Substring(0,3))
{
"CN=" {$cn += ,$item.replace("CN=","");$cn += '/';continue}
"OU=" {$ou += ,$item.replace("OU=","");$ou += '/';continue}
"DC=" {$DC += $item.replace("DC=","");$DC += '.';continue}
}
}
$canoincal = $dc.Substring(0,$dc.length - 1)
if ($ou -ne $null) { for ($i = $ou.count;$i -ge 0;$i -- ){$canoincal += $ou[$i]} }
for ($i = $cn.count-1;$i -ge 0;$i -- ){$canoincal += $cn[$i].ToString().replace('~',',')}
return $canoincal
}
function ConvertFrom-Canonical
{
param([string]$canoincal=(trow '$Canonical is required!'))
$obj = $canoincal.Replace(',','\,').Split('/')
[string]$DN = "CN=" + $obj[$obj.count - 1]
for ($i = $obj.count - 2;$i -ge 1;$i--){$DN += ",OU=" + $obj[$i]}
$obj[0].split(".") | ForEach-Object { $DN += ",DC=" + $_}
return $dn
}