DSCResources/AccessControlResourceHelper/AccessControlResourceHelper.psm1
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try { $importLocalizedDataParams = @{ BaseDirectory = $PSScriptRoot UICulture = $PSUICulture FileName = 'AccessControlResourceHelper.strings.psd1' ErrorAction = 'Stop' } $script:localizedData = Import-LocalizedData @importLocalizedDataParams } catch { $importLocalizedDataParams.UICulture = 'en-US' try { $script:localizedData = Import-LocalizedData @importLocalizedDataParams } catch { throw 'Unable to load localized data' } } <# .SYNOPSIS Resolves the principal name SID .PARAMETER Identity Specifies the identity of the principal. .EXAMPLE Resolve-Identity -Identity "everyone" #> function Resolve-Identity { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [String] $Identity ) process { Write-Verbose -Message "Resolving identity for '$Identity'." $tryNTService = $false try { if ($Identity -match '^S-\d-(\d+-){1,14}\d+$') { [System.Security.Principal.SecurityIdentifier]$Identity = $Identity } else { [System.Security.Principal.NTAccount]$Identity = $Identity } $SID = $Identity.Translate([System.Security.Principal.SecurityIdentifier]) $NTAccount = $SID.Translate([System.Security.Principal.NTAccount]) $Principal = [PSCustomObject]@{ Name = $NTAccount.Value SID = $SID.Value } return $Principal } catch { # Try to resolve identity to NT Service $tryNTService = $true } if ($tryNTService) { try { [System.Security.Principal.NTAccount]$Id = "NT Service\" + $Identity $SID = $Id.Translate([System.Security.Principal.SecurityIdentifier]) $NTAccount = $SID.Translate([System.Security.Principal.NTAccount]) $Principal = [PSCustomObject]@{ Name = $NTAccount.Value SID = $SID.Value } return $Principal } catch { $ErrorMessage = "Could not resolve identity '{0}': '{1}'." -f $Identity, $_.Exception.Message Write-Error -Exception $_.Exception -Message $ErrorMessage } } } } <# .SYNOPSIS Takes identity name and translates to SID .PARAMETER IdentityReference System.Security.Principal.NTAccount object .EXAMPLE $IdentityReference = (Get-Acl -Path C:\temp).access[0].IdentityReference ConvertTo-SID -IdentityReference $IdentityReference #> function ConvertTo-SID { Param ( [Parameter(Mandatory = $true)] [String] $IdentityReference ) try { If($IdentityReference.Contains("\")) { $IdentityReference = $IdentityReference.split('\')[1] } [System.Security.Principal.NTAccount]$PrinicipalName = $IdentityReference $SID = $PrinicipalName.Translate([System.Security.Principal.SecurityIdentifier]) Return $SID } catch { # Probably NT Service which needs domain portion to translate without error [System.Security.Principal.NTAccount]$Id = "NT Service\" + $IdentityReference $SID = $Id.Translate([System.Security.Principal.SecurityIdentifier]) return $SID } } <# .SYNOPSIS Confirms a required module exists. #> function Assert-Module { [CmdletBinding()] param ( [Parameter()] [ValidateNotNullOrEmpty()] [System.String] $ModuleName ) if (-not (Get-Module -Name $ModuleName -ListAvailable)) { $errorId = '{0}_ModuleNotFound' -f $ModuleName; $errorMessage = $localizedString.RoleNotFoundError -f $ModuleName; ThrowInvalidOperationError -ErrorId $errorId -ErrorMessage $errorMessage; } } <# .SYNOPSIS Retrieves teh guid of the delegation right #> function Get-DelegationRightsGuid { Param ( [Parameter()] [string] $ObjectName ) if ($ObjectName) { # Create a hashtable to store the GUID value of each schemaGuids and rightsGuids $guidmap = @{} $rootdse = Get-ADRootDSE Get-ADObject -SearchBase ($rootdse.SchemaNamingContext) -LDAPFilter "(schemaidguid=*)" -Properties Name,schemaIDGUID | Foreach-Object -Process {$guidmap[$_.Name] = [System.GUID]$_.schemaIDGUID} Get-ADObject -SearchBase ($rootdse.ConfigurationNamingContext) -LDAPFilter "(&(objectclass=controlAccessRight)(rightsguid=*))" -Properties Name,rightsGuid | Foreach-Object -Process {$guidmap[$_.Name] = [System.GUID]$_.rightsGuid} return [system.guid]$guidmap[$ObjectName] } else { return [system.guid]'00000000-0000-0000-0000-000000000000' } } <# .SYNOPSIS Retrieves the name of the AD schema object. #> function Get-SchemaObjectName { [CmdletBinding()] [OutputType([System.String])] Param ( [Parameter()] [guid] $SchemaIdGuid ) if ($SchemaIdGuid -and ($SchemaIdGuid.Guid -ne '00000000-0000-0000-0000-000000000000')) { $guidmap = @{} $rootdse = Get-ADRootDSE Get-ADObject -SearchBase ($rootdse.SchemaNamingContext) -LDAPFilter "(schemaidguid=*)" -Properties Name,schemaIDGUID | Foreach-Object -Process {$guidmap[$_.Name] = [System.GUID]$_.schemaIDGUID} Get-ADObject -SearchBase ($rootdse.ConfigurationNamingContext) -LDAPFilter "(&(objectclass=controlAccessRight)(rightsguid=*))" -Properties Name,rightsGuid | Foreach-Object -Process {$guidmap[$_.Name] = [System.GUID]$_.rightsGuid} # This is to address the edge case where one guid resolves to multiple names ex. f3a64788-5306-11d1-a9c5-0000f80367c1 resolves to Service-Principal-Name,Validated-SPN $names = ($guidmap.GetEnumerator() | Where-Object -FilterScript {$_.Value -eq $SchemaIdGuid}).Name return $names -join ',' } else { return 'None' } } <# .SYNOPSIS Produces a custom verbose message displaying details of every property touched by the resource. #> function Write-CustomVerboseMessage { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $Action, [Parameter(Mandatory = $true)] [System.String] $Path, [Parameter(Mandatory = $true)] [ValidateScript({ $_ -is [System.DirectoryServices.ActiveDirectoryAccessRule] -or $_ -is [System.DirectoryServices.ActiveDirectoryAuditRule] -or $_ -is [System.Security.AccessControl.FileSystemAccessRule] -or $_ -is [System.Security.AccessControl.AuditRule] })] $Rule ) $properties = [ordered]@{ IdentityReference = $Rule.IdentityReference } switch ($Rule.GetType().Name) { 'ActiveDirectoryAccessRule' { # future expansion break } 'ActiveDirectoryAuditRule' { $properties.Add('ActiveDirectoryRights', $Rule.ActiveDirectoryRights) $properties.Add('AuditFlags', $Rule.AuditFlags) $properties.Add('ObjectType', $(Get-SchemaObjectName -SchemaIdGuid $Rule.ObjectType)) $properties.Add('InheritanceType', $Rule.InheritanceType) $properties.Add('InheritedObjectType', $(Get-SchemaObjectName -SchemaIdGuid $Rule.InheritedObjectType)) break } 'FileSystemAccessRule' { $properties.Add('AccessControlType', $Rule.AccessControlType) $properties.Add('FileSystemRights', $Rule.FileSystemRights) $properties.Add('InheritanceFlags', $Rule.InheritanceFlags) $properties.Add('PropagationFlags', $Rule.PropagationFlags) break } 'FileSystemAuditRule' { $properties.Add('FileSystemRights', $Rule.FileSystemRights) $properties.Add('AuditFlags', $Rule.AuditFlags) $properties.Add('InheritanceFlags', $Rule.InheritanceFlags) $properties.Add('PropagationFlags', $Rule.PropagationFlags) break } } Write-Verbose -Message $localizedData[$Action] -Verbose Write-Verbose -Message ($localizedData.Path -f $Path) -Verbose foreach ($property in $properties.Keys -as [array]) { Write-Verbose -Message ($localizedData[$property] -f $properties[$property]) -Verbose } } <# .SYNOPSIS Resolves inheritance to inheritanceFlag and propagationFlag #> function Get-NtfsInheritenceFlag { [CmdletBinding()] [OutputType([PSCustomObject])] param ( [Parameter(Mandatory = $true)] [System.String] $Inheritance ) switch($Inheritance) { "This folder only"{ $InheritanceFlag = "0" $PropagationFlag = "0" break } "This folder subfolders and files"{ $InheritanceFlag = "3" $PropagationFlag = "0" break } "This folder and subfolders"{ $InheritanceFlag = "1" $PropagationFlag = "0" break } "This folder and files"{ $InheritanceFlag = "2" $PropagationFlag = "0" break } "Subfolders and files only"{ $InheritanceFlag = "3" $PropagationFlag = "2" break } "Subfolders only"{ $InheritanceFlag = "1" $PropagationFlag = "2" break } "Files only"{ $InheritanceFlag = "2" $PropagationFlag = "2" break } } return [PSCustomObject]@{ InheritanceFlag = $InheritanceFlag PropagationFlag = $PropagationFlag } } <# .SYNOPSIS Returns Inheritance name from inheritanceFlag and propagationFlag #> function Get-NtfsInheritenceName { [CmdletBinding()] [OutputType([System.String])] param ( [Parameter(Mandatory = $true)] [System.String] $InheritanceFlag, [Parameter(Mandatory = $true)] [System.String] $PropagationFlag ) switch("$InheritanceFlag-$PropagationFlag") { "0-0"{ return "This folder only" } "3-0"{ return "This folder subfolders and files" } "1-0"{ return "This folder and subfolders" } "2-0"{ return "This folder and files" } "3-2"{ return "Subfolders and files only" } "1-2"{ return "Subfolders Only" } "2-2"{ return "Files Only" } } return "none" } <# .SYNOPSIS Resolves environment variable that are included in a folder/file path. #> function Get-InputPath { [CmdletBinding()] [OutputType([System.String])] param ( [Parameter(Mandatory = $true)] [System.String] $Path ) # If Path has a environment variable, convert it to a locally usable path $returnPath = [System.Environment]::ExpandEnvironmentVariables($Path) return $returnPath } <# .SYNOPSIS Removes the domain from an NT Principal .DESCRIPTION Removes the domain from an NT Principal .PARAMETER Identity Specifies the identity of the principal. #> function Remove-NtPrincipalDomain { [CmdletBinding()] [OutputType([System.Security.Principal.NTAccount])] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.Security.Principal.NTAccount] $Identity ) $modifiedIdentity = $Identity.ToString() -replace '.*\\' $returnIdentity = New-Object -Type System.Security.Principal.NTAccount -ArgumentList $modifiedIdentity return $returnIdentity } |