コード例 #1
0
ファイル: FileParser.cs プロジェクト: polytronicgr/goesdump
        public static List <XRITBaseHeader> GetHeaderData(byte[] data)
        {
            List <XRITBaseHeader> headers = new List <XRITBaseHeader>();
            int maxLength = data.Length; // Initial Guess
            int c         = 0;

            // Parse Primary Header for size
            int type = data[0];

            if (type != (int)HeaderType.PrimaryHeader)
            {
                UIConsole.Error($"Expected PrimaryHeader({(int)HeaderType.PrimaryHeader} got {type}. File is corrupt.");
                return(headers);
            }

            byte[] tmp = data.Skip(1).Take(2).ToArray();

            if (BitConverter.IsLittleEndian)
            {
                Array.Reverse(tmp);
            }

            int size = BitConverter.ToUInt16(tmp, 0);

            tmp = data.Take(size).ToArray();

            PrimaryRecord fh = LLTools.ByteArrayToStruct <PrimaryRecord>(tmp);

            fh        = LLTools.StructToSystemEndian(fh);
            maxLength = (int)fh.HeaderLength; // Set the correct size

            byte[] headerData = data.Take(maxLength).ToArray();
            data = data.Skip(maxLength).ToArray();

            // Parse Secondary Headers
            while (c < maxLength)
            {
                type = headerData[0];
                tmp  = headerData.Skip(1).Take(2).ToArray();

                if (BitConverter.IsLittleEndian)
                {
                    Array.Reverse(tmp);
                }

                size = BitConverter.ToUInt16(tmp, 0);
                tmp  = headerData.Take(size).ToArray();

                if (tmp.Length < size)
                {
                    UIConsole.Warn($"Not enough data for unpack header: Expected {size} got {tmp.Length} - Header Type: {type} - File might be corrupted.");
                    if (c + size > maxLength)
                    {
                        UIConsole.Debug($"c + size > maxLength: {c} + {size} > {maxLength}");
                        size = maxLength - c - 1;
                        c    = maxLength;
                    }
                }
                else
                {
                    c += size;
                }

                headerData = headerData.Skip(size).ToArray();

                XRITBaseHeader h;
                switch (type)
                {
                case (int)HeaderType.PrimaryHeader:
                    fh        = LLTools.ByteArrayToStruct <PrimaryRecord>(tmp);
                    fh        = LLTools.StructToSystemEndian(fh);
                    h         = new PrimaryHeader(fh);
                    maxLength = (int)fh.HeaderLength;     // Set the correct size
                    break;

                case (int)HeaderType.ImageStructureRecord:
                    ImageStructureRecord isr = LLTools.ByteArrayToStruct <ImageStructureRecord>(tmp);
                    isr = LLTools.StructToSystemEndian(isr);
                    h   = new ImageStructureHeader(isr);
                    break;

                case (int)HeaderType.ImageNavigationRecord:
                    ImageNavigationRecord inr = LLTools.ByteArrayToStruct <ImageNavigationRecord>(tmp);
                    inr = LLTools.StructToSystemEndian(inr);
                    h   = new ImageNavigationHeader(inr);
                    break;

                case (int)HeaderType.ImageDataFunctionRecord:
                    // Cannot marshable due variable length
                    //ImageDataFunctionRecord idfr = LLTools.ByteArrayToStruct<ImageDataFunctionRecord>(tmp);
                    //idfr = LLTools.StructToSystemEndian(idfr);
                    ImageDataFunctionRecord idfr = new ImageDataFunctionRecord();
                    idfr.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h         = new ImageDataFunctionHeader(idfr);
                    break;

                case (int)HeaderType.AnnotationRecord:
                    // Cannot be marshalled due variable length
                    //AnnotationRecord ar = LLTools.ByteArrayToStruct<AnnotationRecord>(tmp);
                    //ar = LLTools.StructToSystemEndian(ar);
                    AnnotationRecord ar = new AnnotationRecord();
                    ar.Filename = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h           = new AnnotationHeader(ar);
                    break;

                case (int)HeaderType.TimestampRecord:
                    TimestampRecord tr = LLTools.ByteArrayToStruct <TimestampRecord>(tmp);
                    tr = LLTools.StructToSystemEndian(tr);
                    h  = new TimestampHeader(tr);
                    break;

                case (int)HeaderType.AncillaryTextRecord:
                    // Cannot be marshalled due variable length.
                    // AncillaryText at = LLTools.ByteArrayToStruct<AncillaryText>(tmp);
                    //at = LLTools.StructToSystemEndian(at);
                    AncillaryText at = new AncillaryText();
                    at.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h       = new AncillaryHeader(at);
                    break;

                case (int)HeaderType.KeyRecord:
                    h = new XRITBaseHeader(HeaderType.KeyRecord, tmp);
                    break;

                case (int)HeaderType.SegmentIdentificationRecord:
                    SegmentIdentificationRecord sir = LLTools.ByteArrayToStruct <SegmentIdentificationRecord>(tmp);
                    sir = LLTools.StructToSystemEndian(sir);
                    h   = new SegmentIdentificationHeader(sir);
                    break;

                case (int)HeaderType.NOAASpecificHeader:
                    NOAASpecificRecord nsr = LLTools.ByteArrayToStruct <NOAASpecificRecord>(tmp);
                    nsr = LLTools.StructToSystemEndian(nsr);
                    h   = new NOAASpecificHeader(nsr);
                    break;

                case (int)HeaderType.HeaderStructuredRecord:
                    // Cannot be marshalled due variable length
                    //HeaderStructuredRecord hsr = LLTools.ByteArrayToStruct<HeaderStructuredRecord>(tmp);
                    //hsr = LLTools.StructToSystemEndian(hsr); // Header Structured Record doesn't have endianess dependant fields
                    HeaderStructuredRecord hsr = new HeaderStructuredRecord();
                    hsr.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h        = new HeaderStructuredHeader(hsr);
                    break;

                case (int)HeaderType.RiceCompressionRecord:
                    RiceCompressionRecord rcr = LLTools.ByteArrayToStruct <RiceCompressionRecord>(tmp);
                    rcr = LLTools.StructToSystemEndian(rcr);
                    h   = new RiceCompressionHeader(rcr);
                    break;

                case (int)HeaderType.DCSFileNameRecord:
                    // Cannot be marshalled due variable length
                    //DCSFilenameRecord dfr = LLTools.ByteArrayToStruct<DCSFilenameRecord>(tmp);
                    //dfr = LLTools.StructToSystemEndian(dfr); // DCS Filename Record doesn't have endianess dependant fields
                    DCSFilenameRecord dfr = new DCSFilenameRecord();
                    dfr.Filename = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h            = new DCSFilenameHeader(dfr);
                    break;

                case (int)HeaderType.Head9:
                    Head9 h9 = new Head9();
                    h9.Data = tmp.Skip(3).ToArray();
                    h       = new Head9Header(h9);
                    ((Head9Header)h).FileName = $"buggy_file_{LLTools.TimestampMS()}.lrit";
                    tmp.Skip(3).ToArray().Separate(new byte[] { 0x00 }).ToList().ForEach((barr) => {
                        if (barr.Length > 0 && barr[0] == 0x1F)
                        {
                            ((Head9Header)h).FileName = System.Text.Encoding.UTF8.GetString(barr.Skip(1).ToArray());
                            ((Head9Header)h).FileName = LLTools.StripNonPrintable(((Head9Header)h).FileName);
                        }
                    });
                    UIConsole.Debug($"Got Head9 which may be a bug. Filename: {((Head9Header)h).FileName}");
                    break;

                default:
                    h      = new XRITBaseHeader();
                    h.Type = HeaderType.Unknown;
                    break;
                }

                h.RawData = tmp;
                headers.Add(h);
            }

            return(headers);
        }
コード例 #2
0
 public DCSFilenameHeader(DCSFilenameRecord data) {
     Type = HeaderType.DCSFileNameRecord;    
     Filename = data.Filename;
 }
コード例 #3
0
ファイル: FileParser.cs プロジェクト: hdoverobinson/goesdump
        public static List <XRITBaseHeader> GetHeaderData(byte[] data)
        {
            List <XRITBaseHeader> headers = new List <XRITBaseHeader>();
            int maxLength = data.Length; // Initial Guess
            int c         = 0;

            while (c < maxLength)
            {
                int    type = data[0];
                byte[] tmp  = data.Skip(1).Take(2).ToArray();

                if (BitConverter.IsLittleEndian)
                {
                    Array.Reverse(tmp);
                }

                int size = BitConverter.ToUInt16(tmp, 0);
                tmp = data.Take(size).ToArray();

                if (tmp.Length < size)
                {
                    Console.WriteLine("Not enough data for unpack header: Expected {0} got {1}", size, tmp.Length);
                    break;
                }

                XRITBaseHeader h;
                switch (type)
                {
                case (int)HeaderType.PrimaryHeader:
                    PrimaryRecord fh = LLTools.ByteArrayToStruct <PrimaryRecord>(tmp);
                    fh        = LLTools.StructToSystemEndian(fh);
                    h         = new PrimaryHeader(fh);
                    maxLength = (int)fh.HeaderLength;     // Set the correct size
                    break;

                case (int)HeaderType.ImageStructureRecord:
                    ImageStructureRecord isr = LLTools.ByteArrayToStruct <ImageStructureRecord>(tmp);
                    isr = LLTools.StructToSystemEndian(isr);
                    h   = new ImageStructureHeader(isr);
                    break;

                case (int)HeaderType.ImageNavigationRecord:
                    ImageNavigationRecord inr = LLTools.ByteArrayToStruct <ImageNavigationRecord>(tmp);
                    inr = LLTools.StructToSystemEndian(inr);
                    h   = new ImageNavigationHeader(inr);
                    break;

                case (int)HeaderType.ImageDataFunctionRecord:
                    // Cannot marshable due variable length
                    //ImageDataFunctionRecord idfr = LLTools.ByteArrayToStruct<ImageDataFunctionRecord>(tmp);
                    //idfr = LLTools.StructToSystemEndian(idfr);
                    ImageDataFunctionRecord idfr = new ImageDataFunctionRecord();
                    idfr.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h         = new ImageDataFunctionHeader(idfr);
                    break;

                case (int)HeaderType.AnnotationRecord:
                    // Cannot be marshalled due variable length
                    //AnnotationRecord ar = LLTools.ByteArrayToStruct<AnnotationRecord>(tmp);
                    //ar = LLTools.StructToSystemEndian(ar);
                    AnnotationRecord ar = new AnnotationRecord();
                    ar.Filename = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h           = new AnnotationHeader(ar);
                    break;

                case (int)HeaderType.TimestampRecord:
                    TimestampRecord tr = LLTools.ByteArrayToStruct <TimestampRecord>(tmp);
                    tr = LLTools.StructToSystemEndian(tr);
                    h  = new TimestampHeader(tr);
                    break;

                case (int)HeaderType.AncillaryTextRecord:
                    // Cannot be marshalled due variable length.
                    // AncillaryText at = LLTools.ByteArrayToStruct<AncillaryText>(tmp);
                    //at = LLTools.StructToSystemEndian(at);
                    AncillaryText at = new AncillaryText();
                    at.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h       = new AncillaryHeader(at);
                    break;

                case (int)HeaderType.KeyRecord:
                    h = new XRITBaseHeader(HeaderType.KeyRecord, tmp);
                    break;

                case (int)HeaderType.SegmentIdentificationRecord:
                    SegmentIdentificationRecord sir = LLTools.ByteArrayToStruct <SegmentIdentificationRecord>(tmp);
                    sir = LLTools.StructToSystemEndian(sir);
                    h   = new SegmentIdentificationHeader(sir);
                    break;

                case (int)HeaderType.NOAASpecificHeader:
                    NOAASpecificRecord nsr = LLTools.ByteArrayToStruct <NOAASpecificRecord>(tmp);
                    nsr = LLTools.StructToSystemEndian(nsr);
                    h   = new NOAASpecificHeader(nsr);
                    break;

                case (int)HeaderType.HeaderStructuredRecord:
                    // Cannot be marshalled due variable length
                    //HeaderStructuredRecord hsr = LLTools.ByteArrayToStruct<HeaderStructuredRecord>(tmp);
                    //hsr = LLTools.StructToSystemEndian(hsr); // Header Structured Record doesn't have endianess dependant fields
                    HeaderStructuredRecord hsr = new HeaderStructuredRecord();
                    hsr.Data = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h        = new HeaderStructuredHeader(hsr);
                    break;

                case (int)HeaderType.RiceCompressionRecord:
                    RiceCompressionRecord rcr = LLTools.ByteArrayToStruct <RiceCompressionRecord>(tmp);
                    rcr = LLTools.StructToSystemEndian(rcr);
                    h   = new RiceCompressionHeader(rcr);
                    break;

                case (int)HeaderType.DCSFileNameRecord:
                    // Cannot be marshalled due variable length
                    //DCSFilenameRecord dfr = LLTools.ByteArrayToStruct<DCSFilenameRecord>(tmp);
                    //dfr = LLTools.StructToSystemEndian(dfr); // DCS Filename Record doesn't have endianess dependant fields
                    DCSFilenameRecord dfr = new DCSFilenameRecord();
                    dfr.Filename = System.Text.Encoding.UTF8.GetString(tmp.Skip(3).ToArray());
                    h            = new DCSFilenameHeader(dfr);
                    break;

                default:
                    h      = new XRITBaseHeader();
                    h.Type = HeaderType.Unknown;
                    break;
                }

                h.RawData = tmp;
                headers.Add(h);
                c   += size;
                data = data.Skip(size).ToArray();
            }

            return(headers);
        }