Public/ConvertTo-WmiFilter.ps1
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function ConvertTo-WmiFilter { <# .Synopsis .DESCRIPTION .EXAMPLE ConvertTo-WmiFilter .INPUTS .NOTES Version: 1.0 DateModified: 25/Mar/2014 LasModifiedBy: Vicente Rodriguez Eguibar vicente@eguibar.com Eguibar Information Technology S.L. http://www.eguibarit.com #> [CmdletBinding(SupportsShouldProcess = $true, ConfirmImpact = 'Medium')] Param ( [Microsoft.ActiveDirectory.Management.ADObject[]] $ADObject ) Begin { Write-Verbose -Message '|=> ************************************************************************ <=|' Write-Verbose -Message (Get-Date).ToShortDateString() Write-Verbose -Message (' Starting: {0}' -f $MyInvocation.Mycommand) #display PSBoundparameters formatted nicely for Verbose output $NL = "`n" # New Line $HTab = "`t" # Horizontal Tab [string]$pb = ($PSBoundParameters | Format-Table -AutoSize | Out-String).TrimEnd() Write-Verbose -Message "Parameters used by the function... $NL$($pb.split($NL).Foreach({"$($HTab*4)$_"}) | Out-String) $NL" } Process { # The concept of this function has been taken directly from the GPWmiFilter.psm1 module # written by Bin Yi from Microsoft. I have modified it to allow for the challenges of # Active Directory replication. It will return the WMI filter as an object of type # "Microsoft.GroupPolicy.WmiFilter". $gpDomain = New-Object -TypeName Microsoft.GroupPolicy.GPDomain $ADObject | ForEach-Object { $path = 'MSFT_SomFilter.Domain="' + $gpDomain.DomainName + '",ID="' + $_.Name + '"' $filter = $null try { $filter = $gpDomain.GetWmiFilter($path) } catch { Write-Error -Message 'The WMI filter could not be found.' } if ($filter) { [Guid]$Guid = $_.Name.Substring(1, $_.Name.Length - 2) $filter | Add-Member -MemberType NoteProperty -Name Guid -Value $Guid -PassThru | Add-Member -MemberType NoteProperty -Name Content -Value $_.'msWMI-Parm2' -PassThru } else { Write-Warning -Message 'Waiting 5 seconds for Active Directory replication to complete.' Start-Sleep -Seconds 5 Write-Warning -Message 'Trying again to retrieve the WMI filter.' ConvertTo-WmiFilter $ADObject } } } End { Write-Verbose -Message "Function $($MyInvocation.InvocationName) finished converting the WMI filter." Write-Verbose -Message '' Write-Verbose -Message '-------------------------------------------------------------------------------' Write-Verbose -Message '' } } |