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| function Native($DllFile) {
$Lib = [IO.Path]::GetFileName($DllFile)
$Marshal = [System.Runtime.InteropServices.Marshal]
$Module = [AppDomain]::CurrentDomain.DefineDynamicAssembly((Get-Random), 'Run').DefineDynamicModule((Get-Random))
$Struct = $Module.DefineType('DI', 1048841, [ValueType], 0)
[void]$Struct.DefineField('lpStart', [IntPtr], 6)
[void]$Struct.DefineField('uSize', [UIntPtr], 6)
[void]$Struct.DefineField('Editable', [Boolean], 6)
$DELTA_INPUT = $Struct.CreateType()
$Struct = $Module.DefineType('DO', 1048841, [ValueType], 0)
[void]$Struct.DefineField('lpStart', [IntPtr], 6)
[void]$Struct.DefineField('uSize', [UIntPtr], 6)
$DELTA_OUTPUT = $Struct.CreateType()
$Class = $Module.DefineType('PSFE', 1048961, [Object], 0)
[void]$Class.DefinePInvokeMethod('LoadLibraryW', 'kernel32.dll', 22, 1, [IntPtr], @([String]), 1, 3).SetImplementationFlags(128)
[void]$Class.DefinePInvokeMethod('ApplyDeltaB', $Lib, 22, 1, [Int32], @([Int64], [Type]$DELTA_INPUT, [Type]$DELTA_INPUT, [Type]$DELTA_OUTPUT.MakeByRefType()), 1, 3)
[void]$Class.DefinePInvokeMethod('DeltaFree', $Lib, 22, 1, [Int32], @([IntPtr]), 1, 3)
$Win32 = $Class.CreateType()
}
function ApplyDelta($dBuffer, $dFile) {
$trg = [Activator]::CreateInstance($DELTA_OUTPUT)
$src = [Activator]::CreateInstance($DELTA_INPUT)
$dlt = [Activator]::CreateInstance($DELTA_INPUT)
$dlt.lpStart = $Marshal::AllocHGlobal($dBuffer.Length)
$dlt.uSize = [Activator]::CreateInstance([UIntPtr], @([UInt32]$dBuffer.Length))
$dlt.Editable = $true
$Marshal::Copy($dBuffer, 0, $dlt.lpStart, $dBuffer.Length)
[void]$Win32::ApplyDeltaB(0, $src, $dlt, [ref]$trg)
if ($trg.lpStart -eq [IntPtr]::Zero) { return }
$out = New-Object byte[] $trg.uSize.ToUInt32()
$Marshal::Copy($trg.lpStart, $out, 0, $out.Length)
[IO.File]::WriteAllBytes($dFile, $out)
if ($dlt.lpStart -ne [IntPtr]::Zero) { $Marshal::FreeHGlobal($dlt.lpStart) }
if ($trg.lpStart -ne [IntPtr]::Zero) { [void]$Win32::DeltaFree($trg.lpStart) }
}
function G($DirectoryName) {
$DeltaList = [ordered] @{}
$doc = New-Object xml
$doc.Load($DirectoryName + "\express.psf.cix.xml")
$child = $doc.FirstChild.NextSibling.FirstChild
while (!$child.LocalName.Equals("Files")) { $child = $child.NextSibling }
$FileList = $child.ChildNodes
foreach ($file in $FileList) {
$fileChild = $file.FirstChild
while (!$fileChild.LocalName.Equals("Delta")) { $fileChild = $fileChild.NextSibling }
$deltaChild = $fileChild.FirstChild
while (!$deltaChild.LocalName.Equals("Source")) { $deltaChild = $deltaChild.NextSibling }
$DeltaList[$($file.id)] = @{name = $file.name; time = $file.time; stype = $deltaChild.type; offset = $deltaChild.offset; length = $deltaChild.length };
}
return $DeltaList
}
function P($CabFile, $DllFile = 'msdelta.dll') {
if ($DllFile -eq 'msdelta.dll' -and (Test-Path "$env:SystemRoot\System32\UpdateCompression.dll")) { $DllFile = "$env:SystemRoot\System32\UpdateCompression.dll" }
. Native($DllFile)
[void]$Win32::LoadLibraryW($DllFile)
$DirectoryName = $CabFile.Substring(0, $CabFile.LastIndexOf('.'))
$PSFFile = $DirectoryName + ".psf"
$null = [IO.Directory]::CreateDirectory($DirectoryName)
$DeltaList = G $DirectoryName
$PSFFileStream = [IO.File]::OpenRead([IO.Path]::GetFullPath($PSFFile))
$cwd = [IO.Path]::GetFullPath($DirectoryName)
[Environment]::CurrentDirectory = $cwd
$null = [IO.Directory]::CreateDirectory("000")
foreach ($DeltaFile in $DeltaList.Values) {
$FullFileName = $DeltaFile.name
if (Test-Path $FullFileName) { continue }
$ShortFold = [IO.Path]::GetDirectoryName($FullFileName)
$ShortFile = [IO.Path]::GetFileName($FullFileName)
[bool]$UseRobo = (($cwd + '\' + $FullFileName).Length -gt 255) -or (($cwd + '\' + $ShortFold).Length -gt 248)
if ($UseRobo -eq 0 -and $ShortFold.IndexOf("_") -ne -1) { $null = [IO.Directory]::CreateDirectory($ShortFold) }
if ($UseRobo -eq 0) { $WhereFile = $FullFileName }
Else { $WhereFile = "000\" + $ShortFile }
try { [void]$PSFFileStream.Seek($DeltaFile.offset, 0) } catch {}
$Buffer = New-Object byte[] $DeltaFile.length
try { [void]$PSFFileStream.Read($Buffer, 0, $DeltaFile.length) } catch {}
$OutputFileStream = [IO.File]::Create($WhereFile)
try { [void]$OutputFileStream.Write($Buffer, 0, $DeltaFile.length) } catch {}
[void]$OutputFileStream.Close()
if ($DeltaFile.stype -eq "PA30" -or $DeltaFile.stype -eq "PA31") { ApplyDelta $Buffer $WhereFile }
$null = [IO.File]::SetLastWriteTimeUtc($WhereFile, [DateTime]::FromFileTimeUtc($DeltaFile.time))
if ($UseRobo -eq 0) { continue }
Start-Process robocopy.exe -NoNewWindow -Wait -ArgumentList ('"' + $cwd + '\000' + '"' + ' ' + '"' + $cwd + '\' + $ShortFold + '"' + ' ' + $ShortFile + ' /MOV /R:1 /W:1 /NS /NC /NFL /NDL /NP /NJH /NJS')
}
[void]$PSFFileStream.Close()
$null = [IO.Directory]::Delete("000", $True)
}
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