functions/gplinks/Register-DMGPLink.ps1
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function Register-DMGPLink { <# .SYNOPSIS Registers a group policy link as a desired state. .DESCRIPTION Registers a group policy link as a desired state. .PARAMETER PolicyName The name of the group policy being linked. Supports string expansion. .PARAMETER OrganizationalUnit The organizational unit (or domain root) being linked to. Supports string expansion. .PARAMETER OUFilter A filter string for an organizational unit. The filter must be a wildcard-pattern supporting distinguishedname. .PARAMETER Precedence Numeric value representing the order it is linked in. The lower the number, the higher on the list, the more relevant the setting. .PARAMETER Tier The tier of a link is a priority ordering on top of Precedence. While precedence determines order within a given tier, each tier is processed separately. The higher the tier number, the higher the priority. In additive mode, already existing linked policies have a Tier 0 priority. If you want your own policies to be prepended, use Tier 1 or higher. If you want your own policies to have the least priority however, user Tier -1 or lower. Default: 1 .PARAMETER ProcessingMode In which way GPO links are being processed: - Additive: Add provided links, but do not modify the existing ones. - Constrained: Replace existing links that are undesired By default, constrained mode is being used. If any single link for a given Organizational Unit is in constrained mode, the entire OU is processed under constraind mode. .PARAMETER Present Whether the link should be present at all. Relevant in additive mode, to retain the capability to delete undesired links. .EXAMPLE PS C:\> Get-Content $configPath | ConvertFrom-Json | Write-Output | Register-DMGPLink Import all GPLinks stored in the json file located at $configPath. #> [CmdletBinding()] param ( [parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true)] [string] $PolicyName, [parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true, ParameterSetName = 'Path')] [Alias('OU')] [string] $OrganizationalUnit, [parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true, ParameterSetName = 'Filter')] [string] $OUFilter, [parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true)] [int] $Precedence, [parameter(ValueFromPipelineByPropertyName = $true)] [int] $Tier = 1, [Parameter(ValueFromPipelineByPropertyName = $true)] [ValidateSet('Constrained', 'Additive')] [string] $ProcessingMode = 'Constrained', [parameter(ValueFromPipelineByPropertyName = $true)] [bool] $Present = $true ) process { switch ($PSCmdlet.ParameterSetName) { 'Path' { if (-not $script:groupPolicyLinks[$OrganizationalUnit]) { $script:groupPolicyLinks[$OrganizationalUnit] = @{ } } $script:groupPolicyLinks[$OrganizationalUnit][$PolicyName] = [PSCustomObject]@{ PSTypeName = 'DomainManagement.GPLink' PolicyName = $PolicyName OrganizationalUnit = $OrganizationalUnit Precedence = $Precedence Tier = $Tier ProcessingMode = $ProcessingMode Present = $Present } } 'Filter' { if (-not $script:groupPolicyLinksDynamic[$OUFilter]) { $script:groupPolicyLinksDynamic[$OUFilter] = @{ } } $script:groupPolicyLinksDynamic[$OUFilter][$PolicyName] = [PSCustomObject]@{ PSTypeName = 'DomainManagement.GPLink' PolicyName = $PolicyName OUFilter = $OUFilter Precedence = $Precedence Tier = $Tier ProcessingMode = $ProcessingMode Present = $Present } } } } } |