geutebruck/geutebruck-api/tools/Check-DatabaseHeader.ps1

# Check database file header

$dbPath = "C:\Users\ADMINI~1\AppData\Local\Temp\3\GeViDB_shadow_copy.mdb"

if (-not (Test-Path $dbPath)) {
    Write-Host "[ERROR] Database file not found at: $dbPath" -ForegroundColor Red
    exit 1
}

Write-Host "Reading database file header..." -ForegroundColor Yellow
Write-Host "File: $dbPath" -ForegroundColor Gray
Write-Host ""

try {
    $bytes = [System.IO.File]::ReadAllBytes($dbPath) | Select-Object -First 64

    Write-Host "First 64 bytes (hex):" -ForegroundColor Cyan
    $hex = ($bytes | ForEach-Object { $_.ToString("X2") }) -join " "
    Write-Host $hex -ForegroundColor White
    Write-Host ""

    Write-Host "As ASCII:" -ForegroundColor Cyan
    $ascii = [System.Text.Encoding]::ASCII.GetString($bytes)
    Write-Host $ascii -ForegroundColor White
    Write-Host ""

    # Check for common database signatures
    $signature = [System.Text.Encoding]::ASCII.GetString($bytes[0..15])

    if ($signature -match "Standard Jet DB") {
        Write-Host "[INFO] Detected: Microsoft Jet Database (Access 97-2003)" -ForegroundColor Green
    } elseif ($signature -match "Standard ACE DB") {
        Write-Host "[INFO] Detected: Microsoft ACE Database (Access 2007+)" -ForegroundColor Green
    } elseif ($bytes[0] -eq 0x00 -and $bytes[1] -eq 0x01 -and $bytes[2] -eq 0x00 -and $bytes[3] -eq 0x00) {
        Write-Host "[INFO] Detected: Encrypted or protected database" -ForegroundColor Yellow
    } else {
        Write-Host "[WARN] Unknown database format" -ForegroundColor Yellow
    }

} catch {
    Write-Host "[ERROR] Failed to read file: $($_.Exception.Message)" -ForegroundColor Red
    exit 1
}