Import-WsusUpdate

2025.7.0

Import-WsusUpdate.psm1

                                . "$PSScriptRoot\Private\DownloadFilesInParallel.ps1"

. "$PSScriptRoot\Private\DownloadFilesSequentially.ps1"

. "$PSScriptRoot\Private\GetBitsTransferSplatBase.ps1"

. "$PSScriptRoot\Private\GetMUCatalogUpdateInfo.ps1"

. "$PSScriptRoot\Private\GetProxySettingsForUri.ps1"

. "$PSScriptRoot\Private\GetUpdateIDFromKB.ps1"

. "$PSScriptRoot\Private\GetWebRequestSplatBase.ps1"

. "$PSScriptRoot\Private\InitializeProxySettings.ps1"

. "$PSScriptRoot\Private\TestDownloadAvailable.ps1"

. "$PSScriptRoot\Private\TestElevated.ps1"

. "$PSScriptRoot\Public\Import-WsusUpdate.ps1"

$Script:WebSession = $null

$Script:ProxyCredentials = $null

$Script:HttpProxy = ""

$Script:HttpsProxy = ""

$Script:IwuJustUpdated = $false

Export-ModuleMember -Function "Import-WsusUpdate"

#region Module auto-update logic

if ($env:IWU_NO_AUTO_UPDATE -eq "1") {

    Write-Verbose "Found environmental variable `"IWU_NO_AUTO_UPDATE`" set to 1 - skipping auto-update."

    return

}

if ($env:IWU_JUST_UPDATED -eq "1") {

    Write-Verbose "Import-WsusUpdate just updated; skipping auto-update check for this import."

    return

}

try {

    $powerShellGetProvider = Get-PackageProvider -Name "PowerShellGet"

    if (!$powerShellGetProvider) {

        Write-Warning "Could not ensure we're on the latest version of Import-WsusUpdate: PowerShellGet package provider was unavailable."

        return

    }

    if ($powerShellGetProvider.Version.Major -lt 2 -or $powerShellGetProvider.Version.Minor -lt 2) {

        Write-Warning "Could not ensure we're on the latest version of Import-WsusUpdate: PowerShellGet package provider version must be version 2.2 or higher."

        return

    }

    # Allow users to set IwuImportContinue in scripts to remove Write-Host calls and silently continue without having

    # the script fail by not being able to call the current Import-WsusUpdate.

    if ($IwuImportContinue -ne "SilentlyContinue") {

        Write-Host "Ensuring we're on the latest version of Import-WsusUpdate (this may take a minute)..."

    }

    $currentModule = Get-Module -Name "Import-WsusUpdate" -ListAvailable -ErrorAction SilentlyContinue | Select-Object -First 1

    $updatedModuleInfo = Update-Module -Name "Import-WsusUpdate" -AcceptLicense -PassThru -Confirm:$false -ErrorAction Stop

    $moduleJustUpdated = $currentModule -and $updatedModuleInfo -and $currentModule.Version -ne $updatedModuleInfo.Version

    if ($moduleJustUpdated) {

        $env:IWU_JUST_UPDATED = "1"

        # We also need to track in the module whether or not we just updated, since the IWU_JUST_UPDATED environmental

        # variable could have been set by a previous import of Import-WsusUpdate.

        $Script:IwuJustUpdated = $true

        if ($IwuImportContinue -ne "SilentlyContinue") {

            Write-Host "The latest version ($( $updatedModuleInfo.Version )) of Import-WsusUpdate has been installed!" -ForegroundColor Green

            Write-Host "Please restart your PowerShell session." -ForegroundColor Green

        }

    }

} catch {

    Write-Warning "Failed to ensure we're on the latest of Import-WsusUpdate.`r`nThis is not a fatal error and can be ignored, but it is recommended that you keep Import-WsusUpdate up-to-date."

    Write-Warning "The error was: `r`n$($_ | Out-String)"

}

#endregion

# Copyright (c) 2023-2024 AJ Tek Corporation. All Rights Reserved.

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