List available Milestone XProtect VMS Hotfix downloads

Get-VmsHotfixes.ps1

function Get-VmsHotfixes {
    [CmdletBinding()]
    param(
        [Parameter()]
        [string]
        $Version
    )

    process {
        $ProgressPreference = 'SilentlyContinue'
        $Uri = 'https://download.milestonesys.com/MTSKB/hotfixes/'
        $baseUri = [UriBuilder]$Uri
        if (-not [string]::IsNullOrEmpty($Version)) {
            $baseUri.Path = Join-Path $baseUri.Path $Version
        }
        
        $stack = [system.collections.generic.stack[uri]]::new()
        $stack.Push($baseUri.Uri)
        
        while ($stack.Count) {
            try {
                $response = Invoke-WebRequest -Uri $stack.Pop() -ErrorAction Stop
                foreach ($link in $response.Links) {
                    if ($link.href -notmatch '^/') {
                        continue
                    }
                    $baseUri.Path = $link.href
                    if ($link.href -notmatch '\.(exe|msi|zip|txt|config)$') {
                        $stack.Push($baseUri.Uri)
                    } elseif ($link.href -match '^/MTSKB/hotfixes/(?<version>[\d\.]+)/(?<component>[^/]+)/') {
                        if ($Matches.component -match 'archived') {
                            continue
                        }
                        $fileName = ([io.fileinfo]$link.href).Name
                        $length = 0
                        $modified = $null
                        try {
                            $headReq = Invoke-WebRequest -Uri $baseUri.Uri -Method Head -ErrorAction Stop
                            $length = [long]$headReq.Headers.'Content-Length'
                            $modified = $headReq.Headers.'Last-Modified' | Get-Date
                        } catch {
                            Write-Error -ErrorRecord $_
                        }
                        [pscustomobject]@{
                            Version   = $Matches.version
                            Component = $Matches.component
                            File      = $fileName
                            Length    = $length
                            Modified  = $modified
                            Uri       = $baseUri.Uri
                        }
                    }
                }
            } catch {
                Write-Error -ErrorRecord $_
            }
        }
    }
}