Example #1
0
        private int CabExtractCloseFile(NativeMethods.FDI.NOTIFICATION notification)
        {
            Stream stream = this.StreamHandles[notification.hf];

            this.StreamHandles.FreeHandle(notification.hf);

            //bool execute = (notification.attribs & (ushort) FileAttributes.Device) != 0;  // _A_EXEC

            string name = CabUnpacker.GetFileName(notification);

            FileAttributes attributes = (FileAttributes)notification.attribs &
                                        (FileAttributes.Archive | FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System);

            if (attributes == (FileAttributes)0)
            {
                attributes = FileAttributes.Normal;
            }
            DateTime lastWriteTime;

            CompressionEngine.DosDateAndTimeToDateTime(notification.date, notification.time, out lastWriteTime);

            stream.Flush();
            this.context.CloseFileWriteStream(name, stream, attributes, lastWriteTime);
            this.FileStream = null;

            long remainder = this.currentFileTotalBytes - this.currentFileBytesProcessed;

            this.currentFileBytesProcessed += remainder;
            this.fileBytesProcessed        += remainder;
            this.OnProgress(ArchiveProgressType.FinishFile);
            this.currentFileName = null;

            return(1);  // Continue
        }
Example #2
0
        private static string GetFileName(NativeMethods.FDI.NOTIFICATION notification)
        {
            bool utf8Name = (notification.attribs & (ushort)FileAttributes.Normal) != 0;   // _A_NAME_IS_UTF

            // Non-utf8 names should be completely ASCII. But for compatibility with
            // legacy tools, interpret them using the current (Default) ANSI codepage.
            Encoding nameEncoding = utf8Name ? Encoding.UTF8 : Encoding.Default;

            // Find how many bytes are in the string.
            // Unfortunately there is no faster way.
            int nameBytesCount = 0;

            while (Marshal.ReadByte(notification.psz1, nameBytesCount) != 0)
            {
                nameBytesCount++;
            }

            byte[] nameBytes = new byte[nameBytesCount];
            Marshal.Copy(notification.psz1, nameBytes, 0, nameBytesCount);
            string name = nameEncoding.GetString(nameBytes);

            if (Path.IsPathRooted(name))
            {
                name = name.Replace("" + Path.VolumeSeparatorChar, "");
            }

            return(name);
        }
Example #3
0
        private int CabExtractCopyFile(NativeMethods.FDI.NOTIFICATION notification)
        {
            if (notification.iFolder != this.folderId)
            {
                if (notification.iFolder != -3) // -3 is a special folderId used when continuing a folder from a previous cab
                {
                    if (this.folderId != -1)    // -1 means we just started the extraction sequence
                    {
                        this.currentFolderNumber++;
                    }
                }
                this.folderId = notification.iFolder;
            }

            //bool execute = (notification.attribs & (ushort) FileAttributes.Device) != 0;  // _A_EXEC

            string name = CabUnpacker.GetFileName(notification);

            if (this.filter == null || this.filter(name))
            {
                this.currentFileNumber++;
                this.currentFileName = name;

                this.currentFileBytesProcessed = 0;
                this.currentFileTotalBytes     = notification.cb;
                this.OnProgress(ArchiveProgressType.StartFile);

                DateTime lastWriteTime;
                CompressionEngine.DosDateAndTimeToDateTime(notification.date, notification.time, out lastWriteTime);

                Stream stream = this.context.OpenFileWriteStream(name, notification.cb, lastWriteTime);
                if (stream != null)
                {
                    this.FileStream = stream;
                    int streamHandle = this.StreamHandles.AllocHandle(stream);
                    return(streamHandle);
                }
                else
                {
                    this.fileBytesProcessed += notification.cb;
                    this.OnProgress(ArchiveProgressType.FinishFile);
                    this.currentFileName = null;
                }
            }
            return(0);  // Continue
        }
Example #4
0
        private int CabExtractNotify(NativeMethods.FDI.NOTIFICATIONTYPE notificationType, NativeMethods.FDI.NOTIFICATION notification)
        {
            switch (notificationType)
            {
            case NativeMethods.FDI.NOTIFICATIONTYPE.CABINET_INFO:
            {
                if (this.NextCabinetName != null && this.NextCabinetName.StartsWith("?", StringComparison.Ordinal))
                {
                    // We are just continuing the copy of a file that spanned cabinets.
                    // The next cabinet name needs to be preserved.
                    this.NextCabinetName = this.NextCabinetName.Substring(1);
                }
                else
                {
                    string nextCab = Marshal.PtrToStringAnsi(notification.psz1);
                    this.NextCabinetName = (nextCab.Length != 0 ? nextCab : null);
                }
                return(0);         // Continue
            }

            case NativeMethods.FDI.NOTIFICATIONTYPE.NEXT_CABINET:
            {
                string nextCab = Marshal.PtrToStringAnsi(notification.psz1);
                this.CabNumbers[nextCab] = (short)notification.iCabinet;
                this.NextCabinetName     = "?" + this.NextCabinetName;
                return(0);         // Continue
            }

            case NativeMethods.FDI.NOTIFICATIONTYPE.COPY_FILE:
            {
                return(this.CabExtractCopyFile(notification));
            }

            case NativeMethods.FDI.NOTIFICATIONTYPE.CLOSE_FILE_INFO:
            {
                return(this.CabExtractCloseFile(notification));
            }
            }
            return(0);
        }
Example #5
0
        private int CabListNotify(NativeMethods.FDI.NOTIFICATIONTYPE notificationType, NativeMethods.FDI.NOTIFICATION notification)
        {
            switch (notificationType)
            {
            case NativeMethods.FDI.NOTIFICATIONTYPE.CABINET_INFO:
            {
                string nextCab = Marshal.PtrToStringAnsi(notification.psz1);
                this.NextCabinetName = (nextCab.Length != 0 ? nextCab : null);
                return(0);         // Continue
            }

            case NativeMethods.FDI.NOTIFICATIONTYPE.PARTIAL_FILE:
            {
                // This notification can occur when examining the contents of a non-first cab file.
                return(0);         // Continue
            }

            case NativeMethods.FDI.NOTIFICATIONTYPE.COPY_FILE:
            {
                //bool execute = (notification.attribs & (ushort) FileAttributes.Device) != 0;  // _A_EXEC

                string name = CabUnpacker.GetFileName(notification);

                if (this.filter == null || this.filter(name))
                {
                    if (this.fileList != null)
                    {
                        FileAttributes attributes = (FileAttributes)notification.attribs &
                                                    (FileAttributes.Archive | FileAttributes.Hidden | FileAttributes.ReadOnly | FileAttributes.System);
                        if (attributes == (FileAttributes)0)
                        {
                            attributes = FileAttributes.Normal;
                        }
                        DateTime lastWriteTime;
                        CompressionEngine.DosDateAndTimeToDateTime(notification.date, notification.time, out lastWriteTime);
                        long length = notification.cb;

                        CabFileInfo fileInfo = new CabFileInfo(
                            name,
                            notification.iFolder,
                            notification.iCabinet,
                            attributes,
                            lastWriteTime,
                            length);
                        this.fileList.Add(fileInfo);
                        this.currentFileNumber   = this.fileList.Count - 1;
                        this.fileBytesProcessed += notification.cb;
                    }
                }

                this.totalFiles++;
                this.totalFileBytes += notification.cb;
                return(0);         // Continue
            }
            }
            return(0);
        }