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Implement "NM" system area.

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This commit is contained in:
Natalia Portillo
2019-07-28 18:19:17 +01:00
parent 0e7e824c17
commit 4bd044669e
3 changed files with 50 additions and 10 deletions
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57
DiscImageChef.Filesystems/ISO9660/Dir.cs
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@@ -218,13 +218,8 @@ namespace DiscImageChef.Filesystems.ISO9660
FileUnitSize = 0,
Interleave = 0,
VolumeSequenceNumber = record.volume_sequence_number,
Filename = joliet
? Encoding.BigEndianUnicode.GetString(data,
entryOff + DirectoryRecordSize,
record.name_len)
: Encoding.GetString(data, entryOff + DirectoryRecordSize,
record.name_len),
Timestamp = DecodeIsoDateTime(record.date)
Filename = entry.Filename,
Timestamp = DecodeIsoDateTime(record.date)
};
if(hasResourceFork) entries[entry.Filename].ResourceFork = entry;
@@ -248,8 +243,8 @@ namespace DiscImageChef.Filesystems.ISO9660
return entries;
}
static void DecodeSystemArea(byte[] data, int start, int end, ref DecodedDirectoryEntry entry,
out bool hasResourceFork)
void DecodeSystemArea(byte[] data, int start, int end, ref DecodedDirectoryEntry entry,
out bool hasResourceFork)
{
int systemAreaOff = start;
hasResourceFork = false;
@@ -470,6 +465,50 @@ namespace DiscImageChef.Filesystems.ISO9660
break;
case RRIP_NAME:
byte nmLength = data[systemAreaOff + 2];
if(@namespace != Namespace.Rrip)
{
systemAreaOff += nmLength;
break;
}
AlternateName alternateName =
Marshal.ByteArrayToStructureLittleEndian<AlternateName>(data, systemAreaOff,
Marshal.SizeOf<AlternateName>());
byte[] nm;
if(alternateName.flags.HasFlag(AlternateNameFlags.Networkname))
nm = joliet
? Encoding.BigEndianUnicode.GetBytes(Environment.MachineName)
: Encoding.GetBytes(Environment.MachineName);
else
{
nm = new byte[nmLength - Marshal.SizeOf<AlternateName>()];
Array.Copy(data, systemAreaOff + Marshal.SizeOf<AlternateName>(), nm, 0, nm.Length);
}
if(entry.RockRidgeAlternateName is null) entry.RockRidgeAlternateName = new byte[0];
byte[] newNm = new byte[entry.RockRidgeAlternateName.Length + nm.Length];
Array.Copy(entry.RockRidgeAlternateName, 0, newNm, 0,
entry.RockRidgeAlternateName.Length);
Array.Copy(nm, 0, newNm, entry.RockRidgeAlternateName.Length,
nm.Length);
entry.RockRidgeAlternateName = newNm;
if(!alternateName.flags.HasFlag(AlternateNameFlags.Continue))
{
entry.Filename = joliet
? Encoding.BigEndianUnicode.GetString(entry.RockRidgeAlternateName)
: Encoding.GetString(entry.RockRidgeAlternateName);
entry.RockRidgeAlternateName = null;
}
systemAreaOff += nmLength;
break;
case RRIP_CHILDLINK:
case RRIP_PARENTLINK:
case RRIP_RELOCATED_DIR: