Ejemplo n.º 1
0
        public static ISOPartitionDetails GetPartitionDetails(byte[] ss, byte[] pfi, Format ISOType, int VideoSize)
        {
            Trace.WriteLine("Getting partition Details from ISO");
            ISOPartitionDetails details = new ISOPartitionDetails();

            SCSIDevice.DiscData data  = new SCSIDevice.DiscData(ss, 0);
            SCSIDevice.DiscData data2 = new SCSIDevice.DiscData(pfi, 0);
            details.VideoPartitionSize = data.StartSectorNumber - data2.StartSectorNumber;
            Trace.WriteLine("Video partition size: " + details.VideoPartitionSize.ToString());
            details.GamePartitionSize = data.Layer0LastSectorLBA * 2;
            Trace.WriteLine("Game partition size: " + details.GamePartitionSize.ToString());
            details.LayerBreak = data.Layer0LastSectorLBA + details.VideoPartitionSize;
            Trace.WriteLine("Layerbreak: " + details.LayerBreak.ToString());
            Trace.WriteLine("Video Layer 0 size: " + details.VideoLayer0Size.ToString());
            details.VideoFileSize = (uint)VideoSize;
            Trace.WriteLine("Video is size: " + VideoSize);
            if ((details.VideoFileSize <= 0) || (details.VideoFileSize > 0x16e360))
            {
                if (ISOType == Format.Xbox360)
                {
                    details.VideoFileSize   = 0xdbf;
                    details.VideoLayer1Size = 0x32f;
                }
                else
                {
                    details.VideoFileSize   = 0x1b50;
                    details.VideoLayer1Size = 0xa1;
                }
            }
            else
            {
                details.VideoLayer1Size = details.VideoFileSize - data2.Layer0LastSectorLBA;
            }
            details.VideoLayer0Size      = data2.Layer0LastSectorLBA;
            details.VideoPadding         = details.VideoPartitionSize - details.VideoLayer0Size;
            details.TotalSplitVidISOSize = ((details.VideoPartitionSize + details.GamePartitionSize) + details.VideoPadding) + details.VideoLayer1Size;
            details.TotalISOSize         = details.VideoPartitionSize + details.GamePartitionSize;
            return(details);
        }
Ejemplo n.º 2
0
        public long FindFSOffset()
        {
            Trace.WriteLine("Searching for filesystem offset");
            bool flag = false;
            ISOPartitionDetails details = new ISOPartitionDetails();

            if (this.InputFileSize > 0xfd90000L)
            {
                Trace.WriteLine("Attempting to load XBOX 360 PFI file details");
                this.InStream.Seek(0xfd8e800L, SeekOrigin.Begin);
                byte[] buffer  = new byte[0x800];
                byte[] buffer2 = new byte[0x800];
                this.InStream.Read(buffer2, 0, 0x800);
                this.InStream.Seek(0x800L, SeekOrigin.Current);
                this.InStream.Read(buffer, 0, 0x800);
                Trace.WriteLine("Checking PFI details...");
                if (FileSystemSource.SimpleCheckSS(buffer) && FileSystemSource.CheckPFI(buffer2))
                {
                    Trace.WriteLine("SS and PFI are both trivially correct");
                    Stream vs = new ISOFileStreamer(0L, 0xfd8e800L, new BinaryReader(this.InStream));
                    details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox360, FileSystemSource.GetVideoSize(vs));
                    vs.Close();
                    Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
                    flag = true;
                }
                else
                {
                    Trace.WriteLine("PFI or SS is invalid or not present, will use default value");
                }
                long num = 0xfd90000L;
                if (flag)
                {
                    num = details.VideoPartitionSize * 0x800L;
                }
                Trace.WriteLine("Now checking FS Magic");
                if (this.InputFileSize > ((num + 0x10000L) + 20L))
                {
                    this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
                    byte[] buffer3 = new byte[20];
                    this.InStream.Read(buffer3, 0, 20);
                    if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
                    {
                        Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
                        return(num);
                    }
                    Trace.WriteLine("XBOX360 Partition loading failed, trying XBOX 1 partition");
                    if (this.InputFileSize > 0x18300000L)
                    {
                        this.InStream.Seek(0x182fe800L, SeekOrigin.Begin);
                        buffer  = new byte[0x800];
                        buffer2 = new byte[0x800];
                        this.InStream.Read(buffer2, 0, 0x800);
                        this.InStream.Seek(0x800L, SeekOrigin.Current);
                        this.InStream.Read(buffer, 0, 0x800);
                        Trace.WriteLine("Attempting to read details from Xbox 1 pfi + ss");
                        if (FileSystemSource.CheckXbox1SS(buffer) && FileSystemSource.CheckPFI(buffer2))
                        {
                            Trace.WriteLine("SS and PFI loaded successfully");
                            Stream stream2 = new ISOFileStreamer(0L, 0x182fe800L, new BinaryReader(this.InStream));
                            details = FileSystemSource.GetPartitionDetails(buffer, buffer2, Format.Xbox1, FileSystemSource.GetVideoSize(stream2));
                            stream2.Close();
                            Trace.WriteLine("FileSystemOffset calculated as being at " + details.VideoFileSize.ToString() + " blocks");
                            flag = true;
                        }
                        else
                        {
                            Trace.WriteLine("PFI or SS are invalid or not present, trying default xbox 1 offset");
                            flag = false;
                        }
                        num = 0x18300000L;
                        if (flag)
                        {
                            num = details.VideoPartitionSize * 0x800L;
                        }
                        if (this.InputFileSize > ((num + 0x10000L) + 20L))
                        {
                            this.InStream.Seek(num + 0x10000L, SeekOrigin.Begin);
                            this.InStream.Read(buffer3, 0, 20);
                            if (Encoding.ASCII.GetString(buffer3, 0, 20) == "MICROSOFT*XBOX*MEDIA")
                            {
                                Trace.WriteLine("FS Magic found at " + num.ToString() + "blocks + 0x14");
                                return(num);
                            }
                        }
                    }
                }
            }
            else
            {
                Trace.WriteLine("File is too short to contain a video partition (" + this.InputFileSize.ToString() + ")");
            }
            Trace.WriteLine("FS offset not found, using byte 0");
            return(0L);
        }