/*
* private static UInt32 PadTo4(UInt32 RVA)
* {
* UInt32 Cleared = RVA & ~0x3U;
* return (RVA == Cleared) ? RVA : RVA + 0x4U;
* }
*/
internal void InitMetaData()
{
if (B == null)
{
throw new ObjectDisposedException(null);
}
if (parsedMetaData)
{
return;
}
SeekToRVA(MetaDataDDRVA);
UInt32 MetaDataRVA = B.ReadUInt32();
UInt32 MetaDataSize = B.ReadUInt32();
if ((MetaDataRVA == 0) || (MetaDataSize == 0))
{
throw new BadImageFormatException();
}
MetadataRoot = RVAToFileAddress(MetaDataRVA);
UInt32 VersionLengthRVA = MetaDataRVA + 12;
UInt32 VersionStringRVA = VersionLengthRVA + 4;
SeekToRVA(VersionLengthRVA);
UInt32 VersionLength = B.ReadUInt32();
String Version = ReadUTF8String(VersionLength);
UInt32 FlagsRVA = VersionStringRVA + VersionLength;
UInt32 NStreamsRVA = FlagsRVA + 2;
SeekToRVA(NStreamsRVA);
UInt16 NStreams = B.ReadUInt16();
Streams = new StreamDesc[NStreams];
for (int i = 0; i < NStreams; i++)
{
Streams[i] = new StreamDesc(B, MetadataRoot);
}
StreamDesc stringStream, blobStream, TablesStream;
if (!FindStream("#~", out TablesStream))
{
if (!FindStream("#-", out TablesStream))
{
throw new BadImageFormatException();
}
}
if (!FindStream("#Strings", out stringStream))
{
throw new BadImageFormatException();
}
if (!FindStream("#Blob", out blobStream))
{
throw new BadImageFormatException();
}
TablesStream.SeekTo(B, 0);
metaData = new MDTables(B, stringStream, blobStream);
// metaData.DumpStringHeap();
parsedMetaData = true;
}
internal MDTables(BinaryReader reader, StreamDesc stringSD, StreamDesc blobSD)
{ // Positioned at start of #~ stream
stringStream = stringSD;
blobStream = blobSD;
B = reader;
B.BaseStream.Seek(4, SeekOrigin.Current); // Skip reserved
byte Major = B.ReadByte();
byte Minor = B.ReadByte();
// Console.WriteLine("Table schema version {0}.{1}", Major, Minor);
byte HeapSizes = B.ReadByte();
stringIndex = ((HeapSizes & 0x01) == 0) ? 2U : 4U;
GUIDIndex = ((HeapSizes & 0x02) == 0) ? 2U : 4U;
blobIndex = ((HeapSizes & 0x04) == 0) ? 2U : 4U;
B.ReadByte(); // Reserved
UInt64 Valid = B.ReadUInt64();
UInt64 Sorted = B.ReadUInt64();
NRows = new UInt32[(Int32)Tables.MaxTable + 1];
int NTables = 0;
UInt64 VBit = 1UL;
for (int Table = 0; Table <= (int)Tables.MaxTable; Table++, VBit <<= 1)
{
if ((Valid & VBit) != 0)
{
NRows[Table] = B.ReadUInt32();
if (NRows[Table] == 0)
{
//Console.WriteLine("Table {0} is valid with 0 rows", Table);
}
// Console.WriteLine("Table {0} ({1}) has {2} rows", Names[Table], Table, NRows[Table]);
NTables += 1;
}
}
// Console.WriteLine("Found {0} tables", NTables);
ComputeRowLengths();
/*
* for (int i = 0; i <= (int) Tables.MaxTable; i++)
* Console.WriteLine("Table {0} ({1}) has {2} bytes per row",
* Names[i], i, lengths[i]);
*/
tableAt = new UInt32[(Int32)Tables.MaxTable + 1];
VBit = 1UL;
UInt32 Offset = (UInt32)B.BaseStream.Position;
for (int Table = 0; Table <= (int)Tables.MaxTable; Table++, VBit <<= 1)
{
tableAt[Table] = Offset;
// Console.WriteLine("Table {2} ({0}) at offset 0x{1:x}", Table, Offset, Names[(UInt32)Table]);
Offset += lengths[Table] * NRows[Table];
if (((Valid & VBit) != 0) && (NRows[Table] != 0) && (lengths[Table] == 0))
{
throw new BadImageFormatException(String.Format(CultureInfo.CurrentCulture, Res.UnknownMetadataTable, Table));
}
}
}
private bool FindStream(String name, out StreamDesc result)
{
foreach (StreamDesc s in Streams)
{
if (s.Name.Equals(name))
{
result = s;
return(true);
}
}
result = null;
return(false);
}
internal MDTables(BinaryReader reader, StreamDesc stringSD, StreamDesc blobSD)
{ // Positioned at start of #~ stream
stringStream = stringSD;
blobStream = blobSD;
B = reader;
B.BaseStream.Seek(4, SeekOrigin.Current); // Skip reserved
byte Major = B.ReadByte();
byte Minor = B.ReadByte();
// Console.WriteLine("Table schema version {0}.{1}", Major, Minor);
byte HeapSizes = B.ReadByte();
stringIndex = ((HeapSizes & 0x01) == 0) ? 2U : 4U;
GUIDIndex = ((HeapSizes & 0x02) == 0) ? 2U : 4U;
blobIndex = ((HeapSizes & 0x04) == 0) ? 2U : 4U;
B.ReadByte(); // Reserved
UInt64 Valid = B.ReadUInt64();
UInt64 Sorted = B.ReadUInt64();
NRows = new UInt32[(Int32)Tables.MaxTable + 1];
int NTables = 0;
UInt64 VBit = 1UL;
for (int Table = 0; Table <= (int)Tables.MaxTable; Table++, VBit <<= 1)
{
if ((Valid & VBit) != 0)
{
NRows[Table] = B.ReadUInt32();
if (NRows[Table] == 0)
{
//Console.WriteLine("Table {0} is valid with 0 rows", Table);
}
// Console.WriteLine("Table {0} ({1}) has {2} rows", Names[Table], Table, NRows[Table]);
NTables += 1;
}
}
// Console.WriteLine("Found {0} tables", NTables);
ComputeRowLengths();
/*
for (int i = 0; i <= (int) Tables.MaxTable; i++)
Console.WriteLine("Table {0} ({1}) has {2} bytes per row",
Names[i], i, lengths[i]);
*/
tableAt = new UInt32[(Int32)Tables.MaxTable + 1];
VBit = 1UL;
UInt32 Offset = (UInt32)B.BaseStream.Position;
for (int Table = 0; Table <= (int)Tables.MaxTable; Table++, VBit <<= 1)
{
tableAt[Table] = Offset;
// Console.WriteLine("Table {2} ({0}) at offset 0x{1:x}", Table, Offset, Names[(UInt32)Table]);
Offset += lengths[Table] * NRows[Table];
if (((Valid & VBit) != 0) && (NRows[Table] != 0) && (lengths[Table] == 0))
throw new BadImageFormatException(String.Format(CultureInfo.CurrentCulture, Res.UnknownMetadataTable, Table));
}
}
/*
private static UInt32 PadTo4(UInt32 RVA)
{
UInt32 Cleared = RVA & ~0x3U;
return (RVA == Cleared) ? RVA : RVA + 0x4U;
}
*/
internal void InitMetaData()
{
if (B == null)
throw new ObjectDisposedException(null);
if (parsedMetaData)
return;
SeekToRVA(MetaDataDDRVA);
UInt32 MetaDataRVA = B.ReadUInt32();
UInt32 MetaDataSize = B.ReadUInt32();
if ((MetaDataRVA == 0) || (MetaDataSize == 0))
throw new BadImageFormatException();
MetadataRoot = RVAToFileAddress(MetaDataRVA);
UInt32 VersionLengthRVA = MetaDataRVA + 12;
UInt32 VersionStringRVA = VersionLengthRVA + 4;
SeekToRVA(VersionLengthRVA);
UInt32 VersionLength = B.ReadUInt32();
String Version = ReadUTF8String(VersionLength);
UInt32 FlagsRVA = VersionStringRVA + VersionLength;
UInt32 NStreamsRVA = FlagsRVA + 2;
SeekToRVA(NStreamsRVA);
UInt16 NStreams = B.ReadUInt16();
Streams = new StreamDesc[NStreams];
for (int i = 0; i < NStreams; i++) Streams[i] = new StreamDesc(B, MetadataRoot);
StreamDesc stringStream, blobStream, TablesStream;
if (!FindStream("#~", out TablesStream))
if (!FindStream("#-", out TablesStream))
throw new BadImageFormatException();
if (!FindStream("#Strings", out stringStream))
throw new BadImageFormatException();
if (!FindStream("#Blob", out blobStream))
throw new BadImageFormatException();
TablesStream.SeekTo(B, 0);
metaData = new MDTables(B, stringStream, blobStream);
// metaData.DumpStringHeap();
parsedMetaData = true;
}
private bool FindStream(String name, out StreamDesc result)
{
foreach (StreamDesc s in Streams) {
if (s.Name.Equals(name)) {
result = s;
return true;
}
}
result = null;
return false;
}
