private string DirectoryRecordEx(byte[] fileName, string realName, IsoEntry e, byte root, bool secondPass) { byte[] /*b_fi,*/ b_su = null; /*if (fileName == ".") { b_fi = new byte[] { 0 }; realName = ""; } else if (fileName == "..") { b_fi = new byte[] { 1 }; realName = ""; } else b_fi = generator.Ascii.GetBytes(fileName);*/ byte LEN_FI = (byte)fileName.Length; byte LEN_DR = (byte)(33 + LEN_FI); bool fi_padding = ((LEN_DR & 1) != 0); if (fi_padding) LEN_DR++; // as much as I HATE to do it, I have to generate this data in both passes for now. // I don't yet understand enough about what and how many DR entries have to be made to figure out how to do it "right" byte LEN_SU = 0; #if ROCKRIDGE if (root != 1) // don't generate susp on PVD's root entry... { b_su = Susp(ref realName, e, root == 2, secondPass, (byte)(255 - LEN_DR)); if (b_su.Length > 255) throw new NotImplementedException("can't yet handle SUSP > 255 bytes"); LEN_SU = (byte)b_su.Length; } else realName = ""; #endif LEN_DR += LEN_SU; var dr = new FieldValidator(generator); dr.Byte(LEN_DR, 1); // Length of Directory Record ( 9.1.1 ) dr.Byte(0, 2); // Extended Attribute Record Length ( 9.1.2 ) dr.IntLSBMSB(e.DataBlock, 3, 10); // Location of Extent ( 9.1.3 ) #if true // in this test - I round the data length up to the next multiple of 2048, didn't help fix my booting problem though... dr.IntLSBMSB(((e.DataLength - 1) / 2048 + 1) * 2048, 11, 18); // Data Length ( 9.1.4 ) #else dr.IntLSBMSB(e.DataLength, 11, 18); // Data Length ( 9.1.4 ) #endif dr.BinaryDateTime(System.DateTime.Now, 19, 25); // Recording Date and Time ( 9.1.5 ) byte flags = 0; if (e.IsFile) { IsoFile f = (IsoFile)e; if ((f.fileInfo.Attributes & FileAttributes.Hidden) != 0) flags |= 1; // hidden } else { // TODO FIXME - not supporting hidden folders right now //IsoFolder f = (IsoFolder)e; //if ((f.dirInfo.Attributes & DirectoryAttributes.Hidden) != 0) // flags |= 1; // hidden } if (e.IsFolder) flags |= 2; // directory #if false // I'm disabling this because analyzing of a working ISO never sets this bit... if (real_name.Length == 0) flags |= 128; // final #endif dr.Byte(flags, 26); // flags ( 9.1.6 ) dr.Byte(0, 27); // File Unit Size ( 9.1.7 ) dr.Byte(0, 28); // Interleave Gap Size ( 9.1.8 ) dr.ShortLSBMSB(1, 29, 32); // Volume Sequence Number ( 9.1.9 ) dr.Byte(LEN_FI, 33); // Length of File Identifier ( 9.1.10 ) dr.Bytes(fileName, 34, 33 + LEN_FI); if (fi_padding) dr.Zero(34 + LEN_FI, 34 + LEN_FI); if (LEN_SU > 0) dr.Bytes(b_su, LEN_DR - LEN_SU + 1, LEN_DR); return realName; }
private void GenBootRecordDescriptor() // ( ISO 9660 - 8.2, El Torito Figure 7 ) { var br = new FieldValidator(generator); br.Byte(0, 1); // Volume Descriptor Type ( 8.2.1 ), Boot Record Indicator - must be 0 ( offset 0x00 ) br.AString("CD001", 2, 6); // Standard Identifier ( 8.2.2 ), ( offset 0x01-0x05 ) br.Byte(1, 7); // Volume Descriptor Version ( 8.2.3 ), must be 1 for El Torito also ( offset 0x06 ) br.AString("EL TORITO SPECIFICATION", 8, 39, '\0'); // Boot System Identifier ( 8.2.4 ), ( offset 0x07-0x26 ) br.Zero(40, 71); // Boot Identifier ( 8.2.5 ), Unused - must be 0 ( offset 0x27-0x46 ) br.IntLSB(BootCatalog, 72, 75); // Boot System Use ( 8.2.6 ), Absolute Pointer to first sector of Boot Catalog ( offset 0x47-0x4A ) generator.FinishBlock(); }
private void GenBootCatalog(IsoFile f) { BootCatalog = generator.Index / LogicalBlockSize; // write validation entry first... see El Torito section 2.1 var ve = new FieldValidator(generator); ve.Byte(1, 1); // Header ID, must be 0x01 ve.Byte(0, 2); // 0 == x86 - TODO FIXME: 1 == PowerPC, 2 == Mac, see El Torito figure 2 ve.DupByte(0, 3, 4); // Reserved ve.DupByte(0, 5, 0x1C); // Manufacturer/Developer of CD-ROM, see El Torito figure 2 ve.ShortLSB(0x55AA, 0x1D, 0x1E); // checksum - TODO FIXME - allow custom Manufacturer string - calculate checksum dynamically ve.Byte(0x55, 0x1F); // 1st Key Byte ve.Byte(0xAA, 0x20); // 2nd Key Byte // initial/default entry... see El Torito section 2.2 and figure 3 var ide = new FieldValidator(generator); ide.Byte(0x88, 1); // 0x88 = bootable, 0x00 = not bootable // TODO FIXME - this is extremely hackish... fix me... ide.Byte(0, 2); // no emulation /*if ( f.fileInfo.Length <= 1182720 ) ide.Byte(1, 2); // 1.2 meg diskette else if ( f.fileInfo.Length <= 1440 * 1024 ) ide.Byte(2,2); // 1.44 meg diskette else if ( f.fileInfo.Length <= 2880 * 1024 ) ide.Byte(3,2); // 2.88 meg diskette else ide.Byte(4,2);*/ // Hard Disk ( drive 80 ) ide.ShortLSB(0, 3, 4); // Load Segment - 0 == default of 0x7C0 ide.Byte(0, 5); // System Type, according to El Torito figure 3 this MUST be a copy of the "System Type" from the boot image. In practice this appears to not be the case. ide.Byte(0, 6); // Unused, must be 0 if (bootLoadSize == 0) bootLoadSize = (short)((f.fileInfo.Length - 1) / 0x200 + 1); ide.ShortLSB(bootLoadSize, 7, 8); // Sector Count ide.IntLSB(boot.DataBlock, 9, 12); // Logical Block of boot image ide.Zero(13, 32); // unused generator.FinishBlock(); }
private void GenPrimaryVolumeDescriptor() // ( 8.4 ) { PrimaryVolumeDescriptor = generator.Index / LogicalBlockSize; var pvd = new FieldValidator(generator); pvd.Byte(1, 1); // Volume Descriptor Type ( 8.4.1 ) pvd.AString("CD001", 2, 6); // Standard Identifier ( 8.4.2 ) pvd.Byte(1, 7); // Volume Descriptor Version ( 8.4.3 ) pvd.Zero(8, 8); // Unused Field ( 8.4.4 ) pvd.AString("?", 9, 40); // System Identifier ( 8.4.5 ) pvd.DString(volumeLabel, 41, 72); // Volume Identifier ( 8.4.6 ) pvd.Zero(73, 80); // Unused Field ( 8.4.7 ) pvd.IntLSBMSB((TotalSize + LogicalBlockSize - 1) / LogicalBlockSize, 81, 88); // Volume Space Size ( 8.4.8 ) pvd.Zero(89, 120); // Unused Field ( 8.4.9 ) pvd.ShortLSBMSB(1, 121, 124); // Volume Set Size ( 8.4.10 ) pvd.ShortLSBMSB(1, 125, 128); // Volume Sequence Number ( 8.4.11 ) pvd.ShortLSBMSB(LogicalBlockSize, 129, 132); // Logical Block Size ( 8.4.12 ) pvd.IntLSBMSB(PathTableSize, 133, 140); // Path Table Size ( 8.4.13 ) pvd.IntLSB(LPathTable, 141, 144); // L Path Table ( 8.4.14 ) pvd.IntLSB(0, 145, 148); // Optional L Path Table ( 8.4.15 ) pvd.IntMSB(MPathTable, 149, 152); // M Path Table ( 8.4.16 ) pvd.IntMSB(0, 153, 156); // Optional M Path Table ( 8.4.17 ) pvd.BeginField(157); DirectoryRecord(".", isoRoot, 1); // Directory Record for Root Directory ( 8.4.18 ) pvd.EndField(190); pvd.DupByte(0x20, 191, 318); // Volume Set Identifier ( 8.4.19 ) pvd.DupByte(0x20, 319, 446); // Publisher Identifier ( 8.4.20 ) pvd.DupByte(0x20, 447, 574); // Data Preparer ( 8.4.21 ) pvd.DupByte(0x20, 575, 702); // Application Identifier ( 8.4.22 ) pvd.DupByte(0x20, 703, 739); // Copyright File Identifier ( 8.4.23 ) pvd.DupByte(0x20, 740, 776); // Abstract File Identifier ( 8.4.24 ) pvd.DupByte(0x20, 777, 813); // Bibliographic File Identifier ( 8.4.25 ) System.DateTime now = System.DateTime.Now; pvd.AnsiDateTime(now, 814, 830); // Volume Creation Date and Time ( 8.4.26 ) pvd.AnsiDateTime(now, 831, 847); // Volume Modification Date and Time ( 8.4.27 ) pvd.Zero(848, 864); // Volume Expiration Date and Time ( 8.4.28 ) pvd.Zero(865, 881); // Volume Effective Date and Time ( 8.4.29 ) pvd.Byte(1, 882); // File Structure Version ( 8.4.30 ) pvd.Zero(883, 883); // Reserved ( 8.4.31 ) pvd.Zero(884, 1395); // Application Use ( 8.4.32 ) pvd.Zero(1396, 2048); // Reserved for Future Standardization ( 8.4.33 ) }