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[Console]::OutputEncoding = New-Object -typename System.Text.ASCIIEncoding
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]'Tls,Tls11,Tls12'
function Get-PlatformVersion {
switch -regex ((Get-Win32OS).version) {
'10\.0\.\d+' {$platform_version = '2016'}
'10\.0\.17\d+' {$platform_version = '2019'}
'6\.3\.\d+' {$platform_version = '2012r2'}
'6\.2\.\d+' {$platform_version = '2012'}
'6\.1\.\d+' {$platform_version = '2008r2'}
'6\.0\.\d+' {$platform_version = '2008'}
}
if(Test-Path 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Server\ServerLevels') {
$levels = Get-ItemProperty 'HKLM:\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Server\ServerLevels'
if($levels.NanoServer -eq 1) { $platform_version += 'nano' }
}
return $platform_version
}
function Get-PlatformArchitecture {
if ((Get-Win32OS).osarchitecture -like '64-bit') {
$architecture = 'x86_64'
} else {
$architecture = 'i386'
}
return $architecture
}
function Get-Win32OS {
if(!$global:win32OS)
{
$global:win32OS = Get-WMIQuery win32_operatingsystem
}
$global:win32OS
}
function New-Uri {
param ($baseuri, $newuri)
try {
$base = new-object System.Uri $baseuri
new-object System.Uri $base, $newuri
}
catch [System.Management.Automation.MethodInvocationException]{
Write-Error "$($_.exception.message)"
throw $_.exception
}
}
function Get-WebContent {
param ($uri, $filepath)
try {
if($PSVersionTable.PSEdition -eq 'Core') {
Get-WebContentOnCore $uri $filepath
}
else {
Get-WebContentOnFullNet $uri $filepath
}
}
catch {
$exception = $_.Exception
Write-Host "There was an error: "
do {
Write-Host "`t$($exception.message)"
$exception = $exception.innerexception
} while ($exception)
throw "Failed to download from $uri."
}
}
function Get-WebContentOnFullNet {
param ($uri, $filepath)
$proxy = New-Object -TypeName System.Net.WebProxy
$wc = new-object System.Net.WebClient
$wc.Headers.Add("user-agent", "<%= user_agent_string %>")
$proxy.Address = $env:http_proxy
$bypassList = $env:no_proxy
if($bypassList -ne $null){
$bypassList = $bypassList.split(",")
$proxy.BypassList = $byPassList
}
$wc.Proxy = $proxy
if ([string]::IsNullOrEmpty($filepath)) {
$wc.downloadstring($uri)
}
else {
$wc.downloadfile($uri, $filepath)
}
}
function Get-WebContentOnCore {
param ($uri, $filepath)
$handler = New-Object System.Net.Http.HttpClientHandler
$client = New-Object System.Net.Http.HttpClient($handler)
$client.DefaultRequestHeaders.UserAgent.ParseAdd("<%= user_agent_string %>")
$client.Timeout = New-Object System.TimeSpan(0, 30, 0)
$cancelTokenSource = [System.Threading.CancellationTokenSource]::new()
$responseMsg = $client.GetAsync([System.Uri]::new($uri), $cancelTokenSource.Token)
$responseMsg.Wait()
if (!$responseMsg.IsCanceled) {
$response = $responseMsg.Result
if ($response.IsSuccessStatusCode) {
if ([string]::IsNullOrEmpty($filepath)) {
$response.Content.ReadAsStringAsync().Result
}
else {
$downloadedFileStream = [System.IO.FileStream]::new($filepath, [System.IO.FileMode]::Create, [System.IO.FileAccess]::Write)
$copyStreamOp = $response.Content.CopyToAsync($downloadedFileStream)
$copyStreamOp.Wait()
$downloadedFileStream.Close()
if ($copyStreamOp.Exception -ne $null) {
throw $copyStreamOp.Exception
}
}
}
}
}
function Test-ProjectPackage {
[cmdletbinding()]
param ($Path, $Algorithm = 'SHA256', $Hash)
if (!$env:Valid_ProjectPackage){
Write-Verbose "Testing the $Algorithm hash for $path."
$ActualHash = (Custom-GetFileHash -Algorithm $Algorithm -Path $Path).Hash.ToLower()
Write-Verbose "`tDesired Hash - '$Hash'"
Write-Verbose "`tActual Hash - '$ActualHash'"
$env:Valid_ProjectPackage = $ActualHash -eq $Hash
if (-not $env:Valid_ProjectPackage) {
Write-Error "Failed to validate the downloaded installer. The expected $Algorithm hash was '$Hash' and the actual hash was '$ActualHash' for $path"
}
}
return $env:Valid_ProjectPackage
}
function Custom-GetFileHash ($Path, $Algorithm) {
function disposable($o){($o -is [IDisposable]) -and (($o | get-member | foreach-object {$_.name}) -contains 'Dispose')}
function use($obj, [scriptblock]$sb){try {& $sb} catch [exception]{throw $_} finally {if (disposable $obj) {$obj.Dispose()}} }
$Path = (resolve-path $Path).providerpath
$hash = @{Algorithm = $Algorithm; Path = $Path}
use ($c = Get-SHA256Converter) {
use ($in = (gi $Path).OpenRead()) {
$hash.Hash = ([BitConverter]::ToString($c.ComputeHash($in))).Replace("-", "").ToUpper()
}
}
return $hash
}
function Get-SHA256Converter {
if ($(Is-FIPS) -ge 1) {
New-Object -TypeName Security.Cryptography.SHA256Cng
} else {
if($PSVersionTable.PSEdition -eq 'Core') {
[System.Security.Cryptography.SHA256]::Create()
}
else {
New-Object -TypeName Security.Cryptography.SHA256Managed
}
}
}
function Is-FIPS {
if (!$env:fips){
$env:fips = (Get-ItemProperty HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\FipsAlgorithmPolicy).Enabled
}
return $env:fips
}
function Get-WMIQuery {
param ($class)
if(Get-Command -Name Get-CimInstance -ErrorAction SilentlyContinue) {
try{
$classObject = Get-CimInstance $class
# If the Get-CimInstance command exists but fails due to security settings, try Get-WmiObject.
}
catch {
$classObject = Get-WmiObject $class
}
}
else {
$classObject = Get-WmiObject $class
}
return $classObject
}
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