Ejemplo n.º 1
0
        internal override List<BuilderExtent> FixExtents(out long totalLength)
        {
            List<BuilderExtent> fixedRegions = new List<BuilderExtent>();

            DateTime buildTime = DateTime.UtcNow;

            Encoding suppEncoding = _buildParams.UseJoliet ? Encoding.BigEndianUnicode : Encoding.ASCII;

            Dictionary<BuildDirectoryMember, uint> primaryLocationTable = new Dictionary<BuildDirectoryMember, uint>();
            Dictionary<BuildDirectoryMember, uint> supplementaryLocationTable = new Dictionary<BuildDirectoryMember, uint>();

            long focus = DiskStart + (3 * IsoUtilities.SectorSize); // Primary, Supplementary, End (fixed at end...)
            if (_bootEntry != null)
            {
                focus += IsoUtilities.SectorSize;
            }

            // ####################################################################
            // # 0. Fix boot image location
            // ####################################################################
            long bootCatalogPos = 0;
            if (_bootEntry != null)
            {
                long bootImagePos = focus;
                Stream realBootImage = PatchBootImage(_bootImage, (uint)(DiskStart / IsoUtilities.SectorSize), (uint)(bootImagePos / IsoUtilities.SectorSize));
                BuilderStreamExtent bootImageExtent = new BuilderStreamExtent(focus, realBootImage);
                fixedRegions.Add(bootImageExtent);
                focus += Utilities.RoundUp(bootImageExtent.Length, IsoUtilities.SectorSize);

                bootCatalogPos = focus;
                byte[] bootCatalog = new byte[IsoUtilities.SectorSize];
                BootValidationEntry bve = new BootValidationEntry();
                bve.WriteTo(bootCatalog, 0x00);
                _bootEntry.ImageStart = (uint)Utilities.Ceil(bootImagePos, IsoUtilities.SectorSize);
                _bootEntry.SectorCount = (ushort)Utilities.Ceil(_bootImage.Length, Sizes.Sector);
                _bootEntry.WriteTo(bootCatalog, 0x20);
                fixedRegions.Add(new BuilderBufferExtent(bootCatalogPos, bootCatalog));
                focus += IsoUtilities.SectorSize;
            }

            // ####################################################################
            // # 1. Fix file locations
            // ####################################################################

            // Find end of the file data, fixing the files in place as we go
            foreach (BuildFileInfo fi in _files)
            {
                primaryLocationTable.Add(fi, (uint)(focus / IsoUtilities.SectorSize));
                supplementaryLocationTable.Add(fi, (uint)(focus / IsoUtilities.SectorSize));
                FileExtent extent = new FileExtent(fi, focus);

                // Only remember files of non-zero length (otherwise we'll stomp on a valid file)
                if (extent.Length != 0)
                {
                    fixedRegions.Add(extent);
                }

                focus += Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
            }

            // ####################################################################
            // # 2. Fix directory locations
            // ####################################################################

            // There are two directory tables
            //  1. Primary        (std ISO9660)
            //  2. Supplementary  (Joliet)

            // Find start of the second set of directory data, fixing ASCII directories in place.
            long startOfFirstDirData = focus;
            foreach (BuildDirectoryInfo di in _dirs)
            {
                primaryLocationTable.Add(di, (uint)(focus / IsoUtilities.SectorSize));
                DirectoryExtent extent = new DirectoryExtent(di, primaryLocationTable, Encoding.ASCII, focus);
                fixedRegions.Add(extent);
                focus += Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
            }

            // Find end of the second directory table, fixing supplementary directories in place.
            long startOfSecondDirData = focus;
            foreach (BuildDirectoryInfo di in _dirs)
            {
                supplementaryLocationTable.Add(di, (uint)(focus / IsoUtilities.SectorSize));
                DirectoryExtent extent = new DirectoryExtent(di, supplementaryLocationTable, suppEncoding, focus);
                fixedRegions.Add(extent);
                focus += Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
            }

            // ####################################################################
            // # 3. Fix path tables
            // ####################################################################

            // There are four path tables:
            //  1. LE, ASCII
            //  2. BE, ASCII
            //  3. LE, Supp Encoding (Joliet)
            //  4. BE, Supp Encoding (Joliet)

            // Find end of the path table
            long startOfFirstPathTable = focus;
            PathTable pathTable = new PathTable(false, Encoding.ASCII, _dirs, primaryLocationTable, focus);
            fixedRegions.Add(pathTable);
            focus += Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
            long primaryPathTableLength = pathTable.Length;

            long startOfSecondPathTable = focus;
            pathTable = new PathTable(true, Encoding.ASCII, _dirs, primaryLocationTable, focus);
            fixedRegions.Add(pathTable);
            focus += Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);

            long startOfThirdPathTable = focus;
            pathTable = new PathTable(false, suppEncoding, _dirs, supplementaryLocationTable, focus);
            fixedRegions.Add(pathTable);
            focus += Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
            long supplementaryPathTableLength = pathTable.Length;

            long startOfFourthPathTable = focus;
            pathTable = new PathTable(true, suppEncoding, _dirs, supplementaryLocationTable, focus);
            fixedRegions.Add(pathTable);
            focus += Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);

            // Find the end of the disk
            totalLength = focus;

            // ####################################################################
            // # 4. Prepare volume descriptors now other structures are fixed
            // ####################################################################
            int regionIdx = 0;
            focus = DiskStart;
            PrimaryVolumeDescriptor pvDesc = new PrimaryVolumeDescriptor(
                (uint)(totalLength / IsoUtilities.SectorSize),             // VolumeSpaceSize
                (uint)primaryPathTableLength,                              // PathTableSize
                (uint)(startOfFirstPathTable / IsoUtilities.SectorSize),   // TypeLPathTableLocation
                (uint)(startOfSecondPathTable / IsoUtilities.SectorSize),  // TypeMPathTableLocation
                (uint)(startOfFirstDirData / IsoUtilities.SectorSize),     // RootDirectory.LocationOfExtent
                (uint)_rootDirectory.GetDataSize(Encoding.ASCII),          // RootDirectory.DataLength
                buildTime);
            pvDesc.VolumeIdentifier = _buildParams.VolumeIdentifier;
            PrimaryVolumeDescriptorRegion pvdr = new PrimaryVolumeDescriptorRegion(pvDesc, focus);
            fixedRegions.Insert(regionIdx++, pvdr);
            focus += IsoUtilities.SectorSize;

            if (_bootEntry != null)
            {
                BootVolumeDescriptor bvDesc = new BootVolumeDescriptor(
                    (uint)(bootCatalogPos / IsoUtilities.SectorSize));
                BootVolumeDescriptorRegion bvdr = new BootVolumeDescriptorRegion(bvDesc, focus);
                fixedRegions.Insert(regionIdx++, bvdr);
                focus += IsoUtilities.SectorSize;
            }

            SupplementaryVolumeDescriptor svDesc = new SupplementaryVolumeDescriptor(
                (uint)(totalLength / IsoUtilities.SectorSize),             // VolumeSpaceSize
                (uint)supplementaryPathTableLength,                        // PathTableSize
                (uint)(startOfThirdPathTable / IsoUtilities.SectorSize),   // TypeLPathTableLocation
                (uint)(startOfFourthPathTable / IsoUtilities.SectorSize),  // TypeMPathTableLocation
                (uint)(startOfSecondDirData / IsoUtilities.SectorSize),    // RootDirectory.LocationOfExtent
                (uint)_rootDirectory.GetDataSize(suppEncoding),            // RootDirectory.DataLength
                buildTime,
                suppEncoding);
            svDesc.VolumeIdentifier = _buildParams.VolumeIdentifier;
            SupplementaryVolumeDescriptorRegion svdr = new SupplementaryVolumeDescriptorRegion(svDesc, focus);
            fixedRegions.Insert(regionIdx++, svdr);
            focus += IsoUtilities.SectorSize;

            VolumeDescriptorSetTerminator evDesc = new VolumeDescriptorSetTerminator();
            VolumeDescriptorSetTerminatorRegion evdr = new VolumeDescriptorSetTerminatorRegion(evDesc, focus);
            fixedRegions.Insert(regionIdx++, evdr);

            return fixedRegions;
        }
 public SupplementaryVolumeDescriptorRegion(SupplementaryVolumeDescriptor descriptor, long start)
     : base(start)
 {
     _descriptor = descriptor;
 }
Ejemplo n.º 3
0
        internal override List<BuilderExtent> FixExtents(out long totalLength)
        {
            List<BuilderExtent> fixedRegions = new List<BuilderExtent>();

            DateTime buildTime = DateTime.UtcNow;

            Encoding suppEncoding = _buildParams.UseJoliet ? Encoding.BigEndianUnicode : Encoding.ASCII;

            Dictionary<BuildDirectoryMember, uint> primaryLocationTable = new Dictionary<BuildDirectoryMember, uint>();
            Dictionary<BuildDirectoryMember, uint> supplementaryLocationTable = new Dictionary<BuildDirectoryMember, uint>();

            // ####################################################################
            // # 1. Fix file locations
            // ####################################################################
            long focus = FirstDataExtent;
            long highestFileLocation = 0;

            // Find end of the file data, fixing the files in place as we go
            foreach (BuildFileInfo fi in _files)
            {
                primaryLocationTable.Add(fi, (uint)(focus / IsoUtilities.SectorSize));
                supplementaryLocationTable.Add(fi, (uint)(focus / IsoUtilities.SectorSize));
                FileExtent extent = new FileExtent(fi, focus);

                // Only remember files of non-zero length (otherwise we'll stomp on a valid file)
                if (extent.Length != 0)
                {
                    fixedRegions.Add(extent);
                }
                highestFileLocation = focus;
                focus += Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
            }

            // ####################################################################
            // # 2. Fix directory locations
            // ####################################################################

            // There are two directory tables
            //  1. Primary        (std ISO9660)
            //  2. Supplementary  (Joliet)
            long pushFilesBackAmt = 0;
            int regionIdx = 0;
            long pushAmt = 0;
            //I actually want the path and directory tables before the files,
            //so lets find out how big it is then move all of the files
            long unfocused = focus;
            focus = FirstDataExtent;

            // Find start of the second set of directory data, fixing ASCII directories in place.
            long startOfFirstDirData = focus;
            foreach (BuildDirectoryInfo di in _dirs)
            {
                primaryLocationTable.Add(di, (uint)(focus / IsoUtilities.SectorSize));
                DirectoryExtent extent = new DirectoryExtent(di, primaryLocationTable, Encoding.ASCII, focus);
                fixedRegions.Insert(regionIdx++, extent);
                pushAmt = Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
                pushFilesBackAmt += pushAmt;
                focus += pushAmt;
            }

            // Find end of the second directory table, fixing supplementary directories in place.
            long startOfSecondDirData = 0;
            if (_buildParams.UseJoliet)
            {
                startOfSecondDirData = focus;
                foreach (BuildDirectoryInfo di in _dirs)
                {
                    supplementaryLocationTable.Add(di, (uint)(focus / IsoUtilities.SectorSize));
                    DirectoryExtent extent = new DirectoryExtent(di, supplementaryLocationTable, suppEncoding, focus);
                    fixedRegions.Insert(regionIdx++, extent);
                    pushAmt = Utilities.RoundUp(extent.Length, IsoUtilities.SectorSize);
                    pushFilesBackAmt += pushAmt;
                    focus += pushAmt;
                }
            }

            //Push these back now because I'm going to throw the path tables in before them
            PushDataBack(primaryLocationTable, supplementaryLocationTable, fixedRegions, pushFilesBackAmt, regionIdx, false);
            unfocused += pushFilesBackAmt;
            highestFileLocation += pushFilesBackAmt;
            focus = FirstDataExtent;
            pushFilesBackAmt = 0;
            int numDirExtents = regionIdx;
            regionIdx = 0;

            // ####################################################################
            // # 3. Fix path tables
            // ####################################################################

            // There are four path tables:
            //  1. LE, ASCII
            //  2. BE, ASCII
            //  3. LE, Supp Encoding (Joliet)
            //  4. BE, Supp Encoding (Joliet)

            // Find end of the path table
            long startOfFirstPathTable = focus;
            PathTable pathTable = new PathTable(false, Encoding.ASCII, _dirs, primaryLocationTable, focus);
            fixedRegions.Insert(regionIdx++, pathTable);
            pushAmt = Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
            focus += pushAmt;
            pushFilesBackAmt += pushAmt;
            long primaryPathTableLength = pathTable.Length;

            long startOfSecondPathTable = focus;
            pathTable = new PathTable(true, Encoding.ASCII, _dirs, primaryLocationTable, focus);
            fixedRegions.Insert(regionIdx++, pathTable);
            pushAmt = Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
            focus += pushAmt;
            pushFilesBackAmt += pushAmt;

            long startOfThirdPathTable = 0;
            long startOfFourthPathTable = 0;
            long supplementaryPathTableLength = 0;
            if (_buildParams.UseJoliet)
            {
                startOfThirdPathTable = focus;
                pathTable = new PathTable(false, suppEncoding, _dirs, supplementaryLocationTable, focus);
                fixedRegions.Insert(regionIdx++, pathTable);
                pushAmt = Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
                focus += pushAmt;
                pushFilesBackAmt += pushAmt;
                supplementaryPathTableLength = pathTable.Length;

                startOfFourthPathTable = 0;
                pathTable = new PathTable(true, suppEncoding, _dirs, supplementaryLocationTable, focus);
                fixedRegions.Insert(regionIdx++, pathTable);
                pushAmt = Utilities.RoundUp(pathTable.Length, IsoUtilities.SectorSize);
                focus += pushAmt;
                pushFilesBackAmt += pushAmt;
                startOfSecondDirData += pushFilesBackAmt;
            }
            startOfFirstDirData += pushFilesBackAmt;
            highestFileLocation += pushFilesBackAmt;

            PushDataBack(primaryLocationTable, supplementaryLocationTable, fixedRegions, pushFilesBackAmt, regionIdx, true);
            unfocused += pushFilesBackAmt;
            pushFilesBackAmt = 0; //Done pushing, unless we want to expand the disc next

            // ####################################################################
            // # 3a. Correct the file locations
            // ####################################################################

            if(_buildParams.LastFileStartSector > 0)
            {
                long highFileSector = highestFileLocation / IsoUtilities.SectorSize;
                if (_buildParams.LastFileStartSector < highFileSector + _buildParams.LBAoffset)
                {
                    throw new Exception("Disc image is too big for GD-ROM, can't build");
                }
                else
                {
                    pushFilesBackAmt = ((_buildParams.LastFileStartSector - highFileSector - _buildParams.LBAoffset) * IsoUtilities.SectorSize);
                }
                PushDataBack(primaryLocationTable, supplementaryLocationTable, fixedRegions, pushFilesBackAmt, regionIdx + numDirExtents, false);
            }

            // Find the end of the disk
            totalLength = unfocused;
            if (_buildParams.EndSector.HasValue)
            {
                long desiredLength = (_buildParams.EndSector.Value - _buildParams.LBAoffset) * IsoUtilities.SectorSize;
                if (totalLength < desiredLength)
                {
                    totalLength = desiredLength;
                }
                else
                {
                    throw new Exception("Disc is too big, exceeds the desired end sector.");
                }
            }

            // ####################################################################
            // # 4. Prepare volume descriptors now other structures are fixed
            // ####################################################################
            regionIdx = 0;
            focus = DiskStart;
            PrimaryVolumeDescriptor pvDesc = new PrimaryVolumeDescriptor(
                (uint)(totalLength / IsoUtilities.SectorSize),             // VolumeSpaceSize
                (uint)primaryPathTableLength,                              // PathTableSize
                (uint)(startOfFirstPathTable / IsoUtilities.SectorSize) + _buildParams.LBAoffset,   // TypeLPathTableLocation
                (uint)(startOfSecondPathTable / IsoUtilities.SectorSize) + _buildParams.LBAoffset,  // TypeMPathTableLocation
                (uint)(startOfFirstDirData / IsoUtilities.SectorSize) + _buildParams.LBAoffset,     // RootDirectory.LocationOfExtent
                (uint)_rootDirectory.GetDataSize(Encoding.ASCII),          // RootDirectory.DataLength
                buildTime);
            pvDesc.VolumeIdentifier = _buildParams.VolumeIdentifier;
            pvDesc.SystemIdentifier = _buildParams.SystemIdentifier;
            pvDesc.VolumeSetIdentifier = _buildParams.VolumeSetIdentifier;
            pvDesc.PublisherIdentifier = _buildParams.PublisherIdentifier;
            pvDesc.DataPreparerIdentifier = _buildParams.DataPreparerIdentifier;
            pvDesc.ApplicationIdentifier = _buildParams.ApplicationIdentifier;

            PrimaryVolumeDescriptorRegion pvdr = new PrimaryVolumeDescriptorRegion(pvDesc, focus);
            fixedRegions.Insert(regionIdx++, pvdr);
            focus += IsoUtilities.SectorSize;

            if (_buildParams.UseJoliet)
            {
                //If you're not using Joilet, this is a copy of the regular descriptor and a waste of space to include.
                SupplementaryVolumeDescriptor svDesc = new SupplementaryVolumeDescriptor(
                    (uint)(totalLength / IsoUtilities.SectorSize),             // VolumeSpaceSize
                    (uint)supplementaryPathTableLength,                        // PathTableSize
                    (uint)(startOfThirdPathTable / IsoUtilities.SectorSize) + _buildParams.LBAoffset,   // TypeLPathTableLocation
                    (uint)(startOfFourthPathTable / IsoUtilities.SectorSize) + _buildParams.LBAoffset,  // TypeMPathTableLocation
                    (uint)(startOfSecondDirData / IsoUtilities.SectorSize) + _buildParams.LBAoffset,    // RootDirectory.LocationOfExtent
                    (uint)_rootDirectory.GetDataSize(suppEncoding),            // RootDirectory.DataLength
                    buildTime,
                    suppEncoding);
                svDesc.VolumeIdentifier = _buildParams.VolumeIdentifier;
                SupplementaryVolumeDescriptorRegion svdr = new SupplementaryVolumeDescriptorRegion(svDesc, focus);
                fixedRegions.Insert(regionIdx++, svdr);
                focus += IsoUtilities.SectorSize;
            }

            VolumeDescriptorSetTerminator evDesc = new VolumeDescriptorSetTerminator();
            VolumeDescriptorSetTerminatorRegion evdr = new VolumeDescriptorSetTerminatorRegion(evDesc, focus);
            fixedRegions.Insert(regionIdx++, evdr);

            return fixedRegions;
        }