Security/ConvertTo-ProviderAccessControlRights.ps1
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# Copyright 2012 Aaron Jensen # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. function ConvertTo-ProviderAccessControlRights { <# .SYNOPSIS Converts strings into the appropriate access control rights for a PowerShell provider (e.g. FileSystemRights or RegistryRights). .DESCRIPTION This is an internal Carbon function, so you're not getting anything more than the synopsis. .EXAMPLE ConvertTo-ProviderAccessControlRights -ProviderName 'FileSystem' -InputObject 'Read','Write' Demonstrates how to convert `Read` and `Write` into a `System.Security.AccessControl.FileSystemRights` value. #> [CmdletBinding()] param( [Parameter(Mandatory=$true)] [ValidateSet('FileSystem','Registry','CryptoKey')] [string] # The provider name. $ProviderName, [Parameter(Mandatory=$true,ValueFromPipeline=$true)] [string[]] # The values to convert. $InputObject ) begin { $rights = 0 $rightTypeName = 'Security.AccessControl.{0}Rights' -f $ProviderName $foundInvalidRight = $false } process { $InputObject | ForEach-Object { $right = ($_ -as $rightTypeName) if( -not $right ) { $allowedValues = [Enum]::GetNames($rightTypeName) Write-Error ("System.Security.AccessControl.{0}Rights value '{1}' not found. Must be one of: {2}." -f $providerName,$_,($allowedValues -join ' ')) $foundInvalidRight = $true return } $rights = $rights -bor $right } } end { if( $foundInvalidRight ) { return $null } else { $rights } } } |