private void GenContinuationBlock()
{
ContinuationBlock = generator.Index / LogicalBlockSize;
ContinuationLength = -generator.Index; // HACK ALERT: we will add the final offset when done, and that will give us the length
// ER - Extensions Reference - see P1281 section 5.5
byte[] b_id = generator.Ascii.GetBytes("RRIP_1991A"); // I can't find documentation anywhere for these values, but they came from an ISO I analyzed.
byte[] b_des = generator.Ascii.GetBytes("THE ROCK RIDGE INTERCHANGE PROTOCOL PROVIDES SUPPORT FOR POSIX FILE SYSTEM SEMANTICS");
byte[] b_src = generator.Ascii.GetBytes("PLEASE CONTACT DISC PUBLISHER FOR SPECIFICATION SOURCE. SEE PUBLISHER IDENTIFIER IN PRIMARY VOLUME DESCRIPTOR FOR CONTACT INFORMATION.");
var er = new FieldValidator(generator);
er.Byte((byte)'E', 1);
er.Byte((byte)'R', 2);
System.Diagnostics.Debug.Assert((9 + b_id.Length + b_des.Length + b_src.Length) < 256);
er.Byte((byte)(8 + b_id.Length + b_des.Length + b_src.Length), 3);
er.Byte(1, 4); // version
er.Byte((byte)b_id.Length, 5);
er.Byte((byte)b_des.Length, 6);
er.Byte((byte)b_src.Length, 7);
er.Byte(1, 8); // extension version ( got this value from peeking at another ISO file )
er.Bytes(b_id, 9, 9 + b_id.Length - 1);
er.Bytes(b_des, 9 + b_id.Length, 9 + b_id.Length + b_des.Length - 1);
er.Bytes(b_src, 9 + b_id.Length + b_des.Length, 9 + b_id.Length + b_des.Length + b_src.Length - 1);
ContinuationLength += generator.Index;
generator.FinishBlock();
}
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 GenPathTableEx(IsoFolder parentFolder, IsoFolder thisFolder, bool lsb)
{
var di = new FieldValidator(generator);
// Path table record ( ECMA-119 section 9.4 )
byte[] b_di = generator.IsoName(thisFolder.Name, true);
di.Byte((byte)b_di.Length, 1);
di.Byte(0, 2); // Extended Attribute Record Length
if (lsb)
{
di.IntLSB(thisFolder.DataBlock, 3, 6); // Location of Extent
di.ShortLSB(parentFolder.PathTableEntry, 7, 8); // Parent Directory Number
}
else
{
di.IntMSB(thisFolder.DataBlock, 3, 6); // Location of Extent
di.ShortMSB(parentFolder.PathTableEntry, 7, 8); // Parent Directory Number
}
di.Bytes(b_di, 9, 8 + b_di.Length); // Directory Identifier
if ((b_di.Length & 1) != 0)
di.Byte(0, 9 + b_di.Length); // optional padding if LEN_DI is odd
foreach (KeyValuePair<string, IsoEntry> it in thisFolder.entries)
if (it.Value.IsFolder)
GenPathTableEx(thisFolder, (IsoFolder)it.Value, lsb);
}
