internal virtual int Decode(byte[] buf, int bi)
{
Allow = buf[bi++] == unchecked (unchecked (0x00));
Flags = buf[bi++] & unchecked (0xFF);
int size = ServerMessageBlock.ReadInt2(buf, bi);
bi += 2;
Access = ServerMessageBlock.ReadInt4(buf, bi);
bi += 4;
Sid = new Sid(buf, bi);
return(size);
}
/// <exception cref="System.IO.IOException"></exception>
public virtual int Decode(byte[] buffer, int bufferIndex, int len)
{
int start = bufferIndex;
bufferIndex++;
// revision
bufferIndex++;
Type = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to owner sid
bufferIndex += 4;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to group sid
bufferIndex += 4;
ServerMessageBlock.ReadInt4(buffer, bufferIndex);
// offset to sacl
bufferIndex += 4;
int daclOffset = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
bufferIndex = start + daclOffset;
bufferIndex++;
// revision
bufferIndex++;
int size = ServerMessageBlock.ReadInt2(buffer, bufferIndex);
bufferIndex += 2;
int numAces = ServerMessageBlock.ReadInt4(buffer, bufferIndex);
bufferIndex += 4;
if (numAces > 4096)
{
throw new IOException("Invalid SecurityDescriptor");
}
if (daclOffset != 0)
{
Aces = new Ace[numAces];
for (int i = 0; i < numAces; i++)
{
Aces[i] = new Ace();
bufferIndex += Aces[i].Decode(buffer, bufferIndex);
}
}
else
{
Aces = null;
}
return(bufferIndex - start);
}
public Sid(byte[] src, int si)
{
Revision = src[si++];
SubAuthorityCount = src[si++];
IdentifierAuthority = new byte[6];
Array.Copy(src, si, IdentifierAuthority, 0, 6);
si += 6;
if (SubAuthorityCount > 100)
{
throw new RuntimeException("Invalid SID sub_authority_count");
}
SubAuthority = new int[SubAuthorityCount];
for (int i = 0; i < SubAuthorityCount; i++)
{
SubAuthority[i] = ServerMessageBlock.ReadInt4(src, si);
si += 4;
}
}