public CabUnpacker(CabEngine cabEngine)
: base(cabEngine)
{
fdiAllocMemHandler = CabAllocMem;
fdiFreeMemHandler = CabFreeMem;
fdiOpenStreamHandler = CabOpenStream;
fdiReadStreamHandler = CabReadStream;
fdiWriteStreamHandler = CabWriteStream;
fdiCloseStreamHandler = CabCloseStream;
fdiSeekStreamHandler = CabSeekStream;
fdiHandle = NativeMethods.FDI.Create(
fdiAllocMemHandler,
fdiFreeMemHandler,
fdiOpenStreamHandler,
fdiReadStreamHandler,
fdiWriteStreamHandler,
fdiCloseStreamHandler,
fdiSeekStreamHandler,
NativeMethods.FDI.CPU_80386,
ErfHandle.AddrOfPinnedObject());
if (Erf.Error)
{
int error = Erf.Oper;
int errorCode = Erf.Type;
ErfHandle.Free();
throw new CabException(
error,
errorCode,
CabException.GetErrorMessage(error, errorCode, true));
}
}
private void CreateFci(long maxArchiveSize)
{
var ccab = new NativeMethods.FCI.CCAB();
if (maxArchiveSize > 0 && maxArchiveSize < ccab.cb)
{
ccab.cb = Math.Max(
NativeMethods.FCI.MIN_DISK, (int)maxArchiveSize);
}
var maxFolderSizeOption = _context.GetOption(
"maxFolderSize", null);
if (maxFolderSizeOption != null)
{
var maxFolderSize = Convert.ToInt64(
maxFolderSizeOption, CultureInfo.InvariantCulture);
if (maxFolderSize > 0 && maxFolderSize < ccab.cbFolderThresh)
{
ccab.cbFolderThresh = (int)maxFolderSize;
}
}
_maxCabBytes = ccab.cb;
ccab.szCab = _context.GetArchiveName(0);
if (ccab.szCab == null)
{
throw new FileNotFoundException("Cabinet name not provided by stream context.");
}
ccab.setID = (short)new Random().Next(
Int16.MinValue, Int16.MaxValue + 1);
CabNumbers[ccab.szCab] = 0;
CurrentArchiveName = ccab.szCab;
TotalArchives = 1;
CabStream = null;
Erf.Clear();
_fciHandle = NativeMethods.FCI.Create(
ErfHandle.AddrOfPinnedObject(),
_fciFilePlacedHandler,
_fciAllocMemHandler,
_fciFreeMemHandler,
_fciOpenStreamHandler,
_fciReadStreamHandler,
_fciWriteStreamHandler,
_fciCloseStreamHandler,
_fciSeekStreamHandler,
_fciDeleteFileHandler,
_fciGetTempFileHandler,
ccab,
IntPtr.Zero);
CheckError(false);
}