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Validate Unattend.xml or AutoUnattend.xml meet the schema
<#
.SYNOPSIS
Test-Unattend.ps1
.DESCRIPTION
Test-Unattend.ps1
.NOTES
For additonal information please contact david.wallis@transunion.co.uk
.LINK
https://gist.github.com/davidwallis3101/48454cb6c17c988de43b5ea17089ea6f
#>
Function Get-Schema {
<#
.SYNOPSIS
Get-Schema
.DESCRIPTION
Get-Schema
.PARAMETER Path
The path to the DLL to extract the schema from
.EXAMPLE
PS C:\> Get-Schema -Path "C:\binaries\microsoft.componentstudio.componentplatforminterface.dll"
.NOTES
Based on infomation found via the link below
For additonal information please contact david.wallis@transunion.co.uk
.LINK
http://schneegans.de/computer/unattend-schema/
#>
[CmdletBinding()]
param (
[Parameter(Mandatory = $true)]
[string] $Path
)
$assembly = [Reflection.Assembly]::LoadFile($Path)
$resNames = $assembly.GetManifestResourceNames()
$resname = $resNames[0].Replace(".resources", "")
$resMan = New-Object -TypeName System.Resources.ResourceManager -ArgumentList $resname, $assembly
$language = New-Object System.Globalization.CultureInfo -ArgumentList "en-GB"
$resources = $resMan.GetResourceSet($language, $true, $true)
foreach ($obj in $resources) {
if ($obj.Name -NotLike "Unattend") { continue }
[System.Text.Encoding]::ASCII.GetString($obj.Value)
}
}
Function Test-Xml {
<#
.SYNOPSIS
Test-Xml
.DESCRIPTION
Validates an xml file against an xml schema file.
.PARAMETER SchemaFile
The schema file to use for validation
.PARAMETER Schema
The schema to use for validation when stored as a string
.PARAMETER XmlFile
The xml file to validate
.PARAMETER ValidationEventHandler
Scriptblock to be executed when a validation error occurs
.EXAMPLE
PS C:\> dir *.xml | Test-XmlFile -SchemaFile schema.xsd
.EXAMPLE
PS C:\> dir *.xml | Test-XmlFile -Schema $schema
.NOTES
Based on answer from stackoverflow linked below
For additonal information please contact david.wallis@transunion.co.uk
.LINK
https://stackoverflow.com/questions/822907/how-do-i-use-powershell-to-validate-xml-files-against-an-xsd/21283694
#>
[CmdletBinding(DefaultParameterSetName = 'File')]
Param (
[Parameter(Mandatory = $True, ParameterSetName = 'File' )]
[ValidateScript({
if(-Not ($_ | Test-Path) ){
throw "File does not exist"
}
if(-Not ($_ | Test-Path -PathType Leaf) ){
throw "The Path argument must be a file. Folder paths are not allowed."
}
return $true
})]
[System.IO.FileInfo] $SchemaFile,
[Parameter(Mandatory = $True, ParameterSetName = 'String')]
[string] $Schema,
[Parameter(ValueFromPipeline=$true, Mandatory=$true, ValueFromPipelineByPropertyName=$true)]
[alias('Fullname')]
[ValidateScript({
if(-Not ($_ | Test-Path) ){
throw "File does not exist"
}
if(-Not ($_ | Test-Path -PathType Leaf) ){
throw "The Path argument must be a file. Folder paths are not allowed."
}
return $true
})]
[System.IO.FileInfo] $XmlFile,
[scriptblock] $ValidationEventHandler = { Write-Error $args[1].Exception }
)
Begin {
If ($PSCmdlet.ParameterSetName -eq "File") {
$schemaFromFile = Get-Content $SchemaFile -Raw
$schemaReader = New-Object System.IO.StringReader($schemaFromFile)
} else {
$schemaReader = New-Object System.IO.StringReader($Schema)
}
[System.Xml.Schema.XmlSchema]$schema = ([System.Xml.Schema.XmlSchema]::Read($schemaReader, $ValidationEventHandler))
}
Process {
try {
$xml = New-Object System.Xml.XmlDocument
$xml.Schemas.Add($schema) | Out-Null
$xml.Load($XmlFile.FullName)
write-verbose "Validating XML Schema for file $($XmlFile)"
$xml.Validate($ValidationEventHandler)
} catch {
Write-Error $_
}
}
End {
$schemaReader.Close()
}
}
Function Test-Unattend {
<#
.SYNOPSIS
Test-Unattend
.DESCRIPTION
Validates unattend.xml or autounattend.xml against the schema contained within the AIK dll
.PARAMETER Path
The path to the xml file
.EXAMPLE
PS C:\> Get-ChildItem -Path "C:\answer_files\" -Filter "*.xml" -Recurse |
Test-Unattend -DllPath "C:\binaries\microsoft.componentstudio.componentplatforminterface.dll"
.NOTES
For additonal information please contact david.wallis@transunion.co.uk
#>
[CmdletBinding()]
Param(
[Parameter(Mandatory=$true, ValueFromPipeline = $true)]
[Alias("Path")]
[ValidateScript({
if(-Not ($_ | Test-Path) ){
throw "File does not exist"
}
if(-Not ($_ | Test-Path -PathType Leaf) ){
throw "The Path argument must be a file. Folder paths are not allowed."
}
return $true
})]
[System.IO.FileInfo[]]$Files,
[Parameter(Mandatory=$true)]
[string]$DllPath
)
begin {
write-verbose ("Extracting schema from {0} Version: {1}" -f (Split-Path $dllpath -Leaf), ([System.Diagnostics.FileVersionInfo]::GetVersionInfo($dllpath).FileVersion))
$schemaString = Get-Schema -Path $dllPath
}
process {
Foreach ($xmlFile in $Files) {
Test-Xml `
-Schema $schemaString `
-XmlFile $xmlFile.FullName `
-ValidationEventHandler { Write-error "Unable to validate schema for $($xmlFile) $($args[1].Exception.Message)" }
}
}
}
Get-ChildItem -Path "C:\answer_files\" -Filter "*.xml" -Recurse |
Test-Unattend -DllPath "C:\binaries\microsoft.componentstudio.componentplatforminterface.dll" -Verbose
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