Public/Expand-SDB.ps1
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#Converted from python https://github.com/TheEragon/SdbUnpacker Function Expand-SDB { [cmdletbinding()] Param ( [Parameter(Mandatory=$false)] [string] $Path = $script:Config.Path, [Parameter(Mandatory=$false)] [string] $InputFile, [Parameter(Mandatory=$false)] [string] $OutputFile ) Try { $inFile = (Join-Path -Path $Path -ChildPath $InputFile) $outFile = (Join-Path -Path $Path -ChildPath $OutputFile) If(Test-Path $inFile -ErrorAction SilentlyContinue) { Write-Host " + Expanding $($Infile) to $($OutFile).. " -ForegroundColor Cyan -NoNewline $inFileBytes = [System.IO.File]::ReadAllBytes( $(resolve-path $InFile) ) #Check for the zdbf header $SDBHeaderVal = "7A646266" #zdbf $FileTypeHeader = ($inFileBytes[8..11]|ForEach-Object ToString X2) -join '' $DataSize = [bitconverter]::ToInt32($inFileBytes[16..19],0) If($FileTypeHeader -eq $SDBHeaderVal) { #Remove the first 20 bytes to get the zlib compressed file. #Remove the first 2 bytes of the zlib header to get the DeflateStream blob. $DeflateStreamBlob = $inFileBytes[22..($inFileBytes.Length)] $MemoryStream = New-Object System.IO.MemoryStream(,$DeflateStreamBlob) $OutputObj = New-Object System.IO.FileStream $outFile, ([IO.FileMode]::Create), ([IO.FileAccess]::Write), ([IO.FileShare]::None) $DeflateStream = New-Object System.IO.Compression.DeflateStream $MemoryStream, ([IO.Compression.CompressionMode]::Decompress) $buffer = New-Object byte[](1024); while($true) { $read = $DeflateStream.Read($buffer, 0, 1024) if ($read -le 0) { break; } $OutputObj.Write($buffer, 0, $read) } If($OutputObj.Length -eq $DataSize) { Write-Host $Script:tick -ForegroundColor green } Else { Throw "The expanded file size doesn't match the expected size. The file may be corrupt. Please try again." } } Else { Throw "Invalid SDB File speficied." } } Else { Throw "Could not find the specified inputfile $($inFile)" } } Catch { Write-Warning $_ } Finally { If($DeflateStream) {$DeflateStream.Close()} If($OutputObj) {$OutputObj.Close()} } } |