/// <summary>
/// Receives notification callbacks from the File Decompression Interface (FDI).
/// </summary>
/// <param name="fdint">A <see cref="FdiNotificationType"/> value that specifies which notification is being sent.</param>
/// <param name="fdin">A <see cref="FdiNotification"/> that contains information about the notification</param>
/// <returns>The return value is dependent on the notification type.</returns>
/// <remarks>The File Decompression Interface (FDI)provides notifications for six different events. Clients must respond to those
/// notifications by handling the <see cref="NotifyCabinetInfo"/>, <see cref="NotifyCloseFile"/>, <see cref="NotifyCopyFile"/>,
/// <see cref="NotifyEnumerate"/>, <see cref="NotifyNextCabinet"/>, and <see cref="NotifyPartialFile"/> events.</remarks>
protected virtual int NotifyCallback(FdiNotificationType fdint, FdiNotification fdin)
{
Trace.WriteLine(string.Format("NotifyCallback: type {0}", fdint));
NotifyEventArgs e = new NotifyEventArgs(fdin);
// fire the proper event
switch (fdint)
{
case FdiNotificationType.CabinetInfo:
OnNotifyCabinetInfo(e);
break;
case FdiNotificationType.CloseFileInfo:
OnNotifyCloseFile(e);
break;
case FdiNotificationType.CopyFile:
OnNotifyCopyFile(e);
break;
case FdiNotificationType.Enumerate:
OnNotifyEnumerate(e);
break;
case FdiNotificationType.NextCabinet:
OnNotifyNextCabinet(e);
break;
case FdiNotificationType.PartialFile:
OnNotifyPartialFile(e);
break;
}
return(e.Result);
}
private IntPtr OutputFileOpen(FdiNotification fdin)
{
if (_decompressAll)
{ // Extract all files
DecompressFile extractFile = new DecompressFile();
_decompressFiles.Add(extractFile);
MemoryStream stream = new MemoryStream();
GCHandle gch = GCHandle.Alloc(stream);
extractFile.Name = fdin.psz1;
extractFile.Handle = (IntPtr)gch;
return(extractFile.Handle);
}
else
{ // Extract only some files
DecompressFile extractFile = _decompressFiles.Where(ef => ef.Name == fdin.psz1).SingleOrDefault();
if (extractFile == null)
{ // Do not extract, not in the decompress list
return(IntPtr.Zero);
}
else
{ // Do extract, found in the decompress List
MemoryStream stream = new MemoryStream();
GCHandle gch = GCHandle.Alloc(stream);
extractFile.Handle = (IntPtr)gch;
return(extractFile.Handle);
}
}
}
private IntPtr NotifyCallback(FdiNotificationType fdint, FdiNotification fdin)
{
switch (fdint)
{
case FdiNotificationType.CopyFile:
return(OutputFileOpen(fdin));
case FdiNotificationType.CloseFileInfo:
return(OutputFileClose(fdin));
default:
return(IntPtr.Zero);
}
}
private IntPtr OutputFileOpen(FdiNotification fdin)
{
CabDecompressFile extractFile = _decompressFiles.SingleOrDefault(ef => ef.Name == fdin.psz1);
if (extractFile != null)
{
MemoryStream stream = new MemoryStream();
GCHandle gch = GCHandle.Alloc(stream);
extractFile.Handle = (IntPtr)gch;
return(extractFile.Handle);
}
//Don't extract
return(IntPtr.Zero);
}
private IntPtr OutputFileClose(FdiNotification fdin)
{
DecompressFile extractFile = _decompressFiles.Where(ef => ef.Handle == fdin.hf).Single();
using (Stream stream = StreamFromHandle(fdin.hf))
{
extractFile.Found = true;
extractFile.Length = (int)stream.Length;
if (0 < stream.Length)
{
extractFile.Data = new byte[stream.Length];
stream.Position = 0;
stream.Read(extractFile.Data, 0, (int)stream.Length);
}
}
return((IntPtr)TRUE);
}
private IntPtr OutputFileClose(FdiNotification fdin)
{
CabDecompressFile extractFile = _decompressFiles.Single(ef => ef.Handle == fdin.hf);
Stream stream = StreamFromHandle(fdin.hf);
extractFile.Found = true;
extractFile.Length = (int)stream.Length;
if (stream.Length > 0)
{
extractFile.Data = new byte[stream.Length];
stream.Position = 0;
stream.Read(extractFile.Data,
0,
(int)stream.Length);
}
stream.Close();
return(IntPtr.Zero);
}
// Handles FDI notification
internal static IntPtr FdiNotify(FdiNotificationType fdint, FdiNotification fdin)
{
switch (fdint)
{
case FdiNotificationType.FdintCOPY_FILE:
{
// TODO: Should I catch exceptions for the new functions?
// Copy target directory
string destPath = Marshal.PtrToStringAnsi(fdin.pv);
// Split the path to a filename and path
string fileName = Path.GetFileName(fdin.psz1);
string remainingPsz1Path = Path.GetDirectoryName(fdin.psz1);
destPath = Path.Combine(destPath, remainingPsz1Path);
Directory.CreateDirectory(destPath); // Creates all intermediate directories if necessary.
// Create the file
string absoluteFilePath = Path.Combine(destPath, fileName);
return(CabinetNativeApi.FdiOpen(absoluteFilePath, (int)OpFlags.Create, (int)(PermissionMode.Read | PermissionMode.Write))); // TODO: OK to ignore _O_SEQUENTIAL, WrOnly, and _O_BINARY?
}
case FdiNotificationType.FdintCLOSE_FILE_INFO:
{
// Close the file
CabinetNativeApi.FdiClose(fdin.hf);
// Set the file attributes
string destPath = Marshal.PtrToStringAnsi(fdin.pv);
string absoluteFilePath = Path.Combine(destPath, fdin.psz1);
IntPtr hFile = PlatformInvokes.CreateFile(
absoluteFilePath,
PlatformInvokes.FileDesiredAccess.GenericRead | PlatformInvokes.FileDesiredAccess.GenericWrite,
PlatformInvokes.FileShareMode.Read,
IntPtr.Zero,
PlatformInvokes.FileCreationDisposition.OpenExisting,
PlatformInvokes.FileAttributes.Normal,
IntPtr.Zero);
if (hFile != IntPtr.Zero)
{
PlatformInvokes.FILETIME ftFile = new PlatformInvokes.FILETIME();
if (PlatformInvokes.DosDateTimeToFileTime(fdin.date, fdin.time, ftFile))
{
PlatformInvokes.FILETIME ftLocal = new PlatformInvokes.FILETIME();
if (PlatformInvokes.LocalFileTimeToFileTime(ftFile, ftLocal))
{
PlatformInvokes.SetFileTime(hFile, ftLocal, null, ftLocal);
}
}
PlatformInvokes.CloseHandle(hFile);
}
PlatformInvokes.SetFileAttributesW(
absoluteFilePath,
(PlatformInvokes.FileAttributes)fdin.attribs & (PlatformInvokes.FileAttributes.ReadOnly | PlatformInvokes.FileAttributes.Hidden | PlatformInvokes.FileAttributes.System | PlatformInvokes.FileAttributes.Archive));
// Call notification function
return(new IntPtr(1));
}
}
return(new IntPtr(0));
}
private static IntPtr OutputFileOpen(FdiNotification fdin)
{
// Console.WriteLine("OutputFileOpen:" + fdin.psz1);
var stream = new MemoryStream();
return (IntPtr)GCHandle.Alloc(stream);
}
private static IntPtr OutputFileClose(FdiNotification fdin)
{
var stream = StreamFromHandle(fdin.hf);
var data = new Byte[stream.Length];
stream.Position = 0;
stream.Read(data, 0, (Int32)stream.Length);
stream.Close();
File.WriteAllBytes(fdin.psz1, data);
return IntPtr.Zero;
}
private static IntPtr NotifyCallback(FdiNotificationType fdint, FdiNotification fdin)
{
switch (fdint)
{
case FdiNotificationType.CopyFile:
return OutputFileOpen(fdin);
case FdiNotificationType.CloseFileInfo:
return OutputFileClose(fdin);
default:
return IntPtr.Zero;
}
}
/// <summary>
/// Initializes a new instance of the NotifyEventArgs class.
/// </summary>
/// <param name="f">An <see cref="FdiNotification"/> struction that contains notification information.</param>
public NotifyEventArgs(FdiNotification f)
{
fdin = f;
result = 0;
}
// Handles FDI notification
internal static IntPtr FdiNotify(FdiNotificationType fdint, FdiNotification fdin)
{
switch (fdint)
{
case FdiNotificationType.FdintCOPY_FILE:
{
// TODO: Should I catch exceptions for the new functions?
// Copy target directory
string destPath = Marshal.PtrToStringAnsi(fdin.pv);
// Split the path to a filename and path
string fileName = Path.GetFileName(fdin.psz1);
string remainingPsz1Path = Path.GetDirectoryName(fdin.psz1);
destPath = Path.Combine(destPath, remainingPsz1Path);
Directory.CreateDirectory(destPath); // Creates all intermediate directories if necessary.
// Create the file
string absoluteFilePath = Path.Combine(destPath, fileName);
return CabinetNativeApi.FdiOpen(absoluteFilePath, (int)OpFlags.Create, (int)(PermissionMode.Read | PermissionMode.Write)); // TODO: OK to ignore _O_SEQUENTIAL, WrOnly, and _O_BINARY?
}
case FdiNotificationType.FdintCLOSE_FILE_INFO:
{
// Close the file
CabinetNativeApi.FdiClose(fdin.hf);
// Set the file attributes
string destPath = Marshal.PtrToStringAnsi(fdin.pv);
string absoluteFilePath = Path.Combine(destPath, fdin.psz1);
IntPtr hFile = PlatformInvokes.CreateFile(
absoluteFilePath,
PlatformInvokes.FileDesiredAccess.GenericRead | PlatformInvokes.FileDesiredAccess.GenericWrite,
PlatformInvokes.FileShareMode.Read,
IntPtr.Zero,
PlatformInvokes.FileCreationDisposition.OpenExisting,
PlatformInvokes.FileAttributes.Normal,
IntPtr.Zero);
if (hFile != IntPtr.Zero)
{
PlatformInvokes.FILETIME ftFile = new PlatformInvokes.FILETIME();
if (PlatformInvokes.DosDateTimeToFileTime(fdin.date, fdin.time, ftFile))
{
PlatformInvokes.FILETIME ftLocal = new PlatformInvokes.FILETIME();
if (PlatformInvokes.LocalFileTimeToFileTime(ftFile, ftLocal))
{
PlatformInvokes.SetFileTime(hFile, ftLocal, null, ftLocal);
}
}
PlatformInvokes.CloseHandle(hFile);
}
PlatformInvokes.SetFileAttributesW(
absoluteFilePath,
(PlatformInvokes.FileAttributes)fdin.attribs & (PlatformInvokes.FileAttributes.ReadOnly | PlatformInvokes.FileAttributes.Hidden | PlatformInvokes.FileAttributes.System | PlatformInvokes.FileAttributes.Archive));
// Call notification function
return new IntPtr(1);
}
}
return new IntPtr(0);
}
