Add Capture-MclCache: tree and control files of an MCL cache, SAS signatures blanked
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cproudlock
10
scripts/diagnostics/Capture-MclCache.cmd
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10
scripts/diagnostics/Capture-MclCache.cmd
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@echo off
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rem Double-click after a Media Creator Lite run finishes.
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rem Asks pro or ltsc, then runs Capture-MclCache.ps1 from this folder.
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setlocal
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set "LABEL=%~1"
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if "%LABEL%"=="" set /p "LABEL=Which MCL run just finished? Type pro or ltsc and press Enter: "
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if "%LABEL%"=="" set "LABEL=run"
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powershell.exe -NoProfile -ExecutionPolicy Bypass -File "%~dp0Capture-MclCache.ps1" -Label "%LABEL%"
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echo.
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pause
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134
scripts/diagnostics/Capture-MclCache.ps1
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134
scripts/diagnostics/Capture-MclCache.ps1
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<#
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.SYNOPSIS
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Captures the layout of a Media Creator Lite cache, plus its small
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control files, so the PXE import can be checked against what the
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current MCL actually writes.
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.DESCRIPTION
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Run on the PC where Media Creator Lite just FINISHED a run. Run it once
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after the Windows 11 Pro run and once after the Windows 11 LTSC run,
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before starting the next MCL run (MCL deletes the cache when it starts).
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.\Capture-MclCache.ps1 -Label pro
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.\Capture-MclCache.ps1 -Label ltsc
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It writes, under the Desktop:
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mcl-capture-<label>-<timestamp>\
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tree.csv every file: path, size, last write time (UTC)
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summary.txt tag files and their contents, file counts, totals
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files\ copies of the small text files (*.json, *.xml,
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*.tag, *.txt, *.ini, *.log, *.cmd, *.ps1, *.bat)
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under 5 MB, same relative paths
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mcl-capture-<label>-<timestamp>.zip
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Nothing large is copied: no WIM, driver, MSU or installer. Text copies
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have any Azure SAS signature (sig=...) blanked, so the zip carries no
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storage credential. Read-only on the cache; needs no admin rights.
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.PARAMETER Label
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Short name for this run, for example pro or ltsc.
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.PARAMETER Root
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The Media Creator folder. Default C:\ProgramData\GEAerospace\MediaCreator.
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.PARAMETER OutDir
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Where to write the capture. Default: the current user's Desktop, or
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this script's folder when there is no Desktop.
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#>
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param(
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[Parameter(Mandatory = $true)][ValidatePattern('^[A-Za-z0-9_-]{1,20}$')][string]$Label,
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[string]$Root = "C:\ProgramData\GEAerospace\MediaCreator",
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[string]$OutDir = [Environment]::GetFolderPath("Desktop")
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)
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$ErrorActionPreference = "Stop"
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if (-not $OutDir) { $OutDir = $PSScriptRoot } # no Desktop (e.g. run as SYSTEM)
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if (-not (Test-Path -LiteralPath $Root -PathType Container)) {
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Write-Host "Media Creator folder not found: $Root" -ForegroundColor Red
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exit 1
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}
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$Root = (Resolve-Path -LiteralPath $Root).ProviderPath.TrimEnd('\')
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$stamp = Get-Date -Format "yyyyMMdd-HHmmss"
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$dest = Join-Path $OutDir "mcl-capture-$Label-$stamp"
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$filesDir = Join-Path $dest "files"
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New-Item -ItemType Directory -Path $filesDir -Force | Out-Null
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$textExt = @(".json", ".xml", ".tag", ".txt", ".ini", ".log", ".cmd", ".ps1", ".bat")
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$maxCopy = 5MB
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# Azure SAS signature in a URL or connection string.
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$sasPattern = '(?i)(sig=)[^&"''\s<]+'
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Write-Host "Reading $Root ..."
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$all = @(Get-ChildItem -LiteralPath $Root -Recurse -Force -File -ErrorAction SilentlyContinue)
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$rows = foreach ($f in $all) {
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[pscustomobject]@{
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Path = $f.FullName.Substring($Root.Length + 1)
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Length = $f.Length
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LastWriteUtc = $f.LastWriteTimeUtc.ToString("yyyy-MM-ddTHH:mm:ssZ")
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}
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}
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$rows | Sort-Object Path | Export-Csv -LiteralPath (Join-Path $dest "tree.csv") -NoTypeInformation -Encoding UTF8
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$copied = 0
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$redacted = 0
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$skippedBig = New-Object System.Collections.Generic.List[string]
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foreach ($f in $all) {
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if ($textExt -notcontains $f.Extension.ToLower()) { continue }
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$rel = $f.FullName.Substring($Root.Length + 1)
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if ($f.Length -gt $maxCopy) { $skippedBig.Add("$rel ($($f.Length) bytes)"); continue }
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$target = Join-Path $filesDir $rel
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New-Item -ItemType Directory -Path (Split-Path $target -Parent) -Force | Out-Null
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$bytes = [System.IO.File]::ReadAllBytes($f.FullName)
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$text = [System.Text.Encoding]::UTF8.GetString($bytes)
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if ($text -match $sasPattern) {
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$text = [regex]::Replace($text, $sasPattern, '${1}REDACTED')
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$bytes = [System.Text.Encoding]::UTF8.GetBytes($text)
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$redacted++
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}
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[System.IO.File]::WriteAllBytes($target, $bytes)
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$copied++
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}
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$tags = @($all | Where-Object { $_.Extension -eq ".tag" })
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$sum = New-Object System.Collections.Generic.List[string]
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$sum.Add("Media Creator Lite cache capture")
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$sum.Add("Label: $Label")
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$sum.Add("Captured: $(Get-Date -Format 'yyyy-MM-dd HH:mm:ss zzz')")
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$sum.Add("Computer: $env:COMPUTERNAME")
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$sum.Add("Root: $Root")
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$sum.Add("PowerShell $($PSVersionTable.PSVersion)")
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$sum.Add("")
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$sum.Add("Files: $($all.Count), total $([math]::Round((($all | Measure-Object Length -Sum).Sum) / 1GB, 2)) GB")
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$sum.Add("Text files copied: $copied (SAS signatures blanked in $redacted)")
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$sum.Add("")
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$sum.Add("Tag files ($($tags.Count)):")
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foreach ($t in $tags) {
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$content = (Get-Content -LiteralPath $t.FullName -Raw -ErrorAction SilentlyContinue)
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if ($content) { $content = $content.Trim() }
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$sum.Add(" $($t.FullName.Substring($Root.Length + 1)) [$content] written $($t.LastWriteTime)")
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}
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if ($tags.Count -eq 0) { $sum.Add(" NONE - the MCL run did not finish") }
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$sum.Add("")
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$sum.Add("Top-level folders:")
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foreach ($g in ($rows | Group-Object { ($_.Path -split '\\')[0..1] -join '\' } | Sort-Object Name)) {
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$gb = [math]::Round((($g.Group | Measure-Object Length -Sum).Sum) / 1GB, 2)
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$sum.Add(" $($g.Name): $($g.Count) files, $gb GB")
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}
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if ($skippedBig.Count) {
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$sum.Add("")
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$sum.Add("Text files over 5 MB, not copied:")
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foreach ($s in $skippedBig) { $sum.Add(" $s") }
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}
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$sum | Set-Content -LiteralPath (Join-Path $dest "summary.txt") -Encoding UTF8
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$zip = "$dest.zip"
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Compress-Archive -Path (Join-Path $dest "*") -DestinationPath $zip -Force
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Write-Host ""
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Write-Host "Captured $($all.Count) files ($copied text files copied)." -ForegroundColor Green
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if ($tags.Count -eq 0) {
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Write-Host "WARNING: no .tag file. MCL did not finish this run." -ForegroundColor Yellow
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}
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Write-Host "Send back: $zip"
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