/// <summary>
/// the constructor
/// </summary>
/// <param name="flags">the security descriptor control flag</param>
/// <param name="owner">the owner sid</param>
/// <param name="group">the group sid</param>
/// <param name="sacl">the sacl</param>
/// <param name="dacl">the dacl</param>
public _RawSecurityDescriptor(SECURITY_DESCRIPTOR_Control flags,
_SID?owner,
_SID?group,
_RawAcl sacl,
_RawAcl dacl)
{
controlFlags = flags;
ownerSid = owner;
groupSid = group;
this.sacl = sacl;
this.dacl = dacl;
}
/// <summary>
/// the constructor
/// </summary>
/// <param name="binary">the input binary</param>
/// <param name="offset">the offset in the binary</param>
public _RawSecurityDescriptor(byte[] binary, int offset)
{
if (binary == null)
{
throw new ArgumentNullException(nameof(binary));
}
if (offset < 0 || offset > binary.Length - 0x14)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
controlFlags = (SECURITY_DESCRIPTOR_Control)BitConverter.ToUInt16(binary, offset + 2);
//Get owner sid
int ownerStart = BitConverter.ToInt32(binary, offset + 4);
if (ownerStart != 0)
{
ownerSid = new _SID(binary, ownerStart);
}
//Get group sid
int groupStart = BitConverter.ToInt32(binary, offset + 8);
if (groupStart != 0)
{
groupSid = new _SID(binary, groupStart);
}
//Get sacl
int saclStart = BitConverter.ToInt32(binary, offset + 12);
if (saclStart != 0)
{
sacl = new _RawAcl(binary, saclStart);
}
//Get dacl
int daclStart = BitConverter.ToInt32(binary, offset + 16);
if (daclStart != 0)
{
dacl = new _RawAcl(binary, daclStart);
}
}
/// <summary>
/// Create the binary from the buffer
/// </summary>
/// <param name="binary">The input binary</param>
/// <param name="offset">The offset in the binary</param>
public void GetBinaryForm(byte[] binary, int offset)
{
if (binary == null)
{
throw new ArgumentNullException(nameof(binary));
}
int binaryLength = Size;
if (offset < 0 || offset > binary.Length - binaryLength)
{
throw new ArgumentOutOfRangeException(nameof(offset));
}
SECURITY_DESCRIPTOR_Control controlFlags = this.controlFlags;
binary[offset] = 1; //revision
binary[offset + 1] = 0; //Sbz1
DtypUtility.WriteUInt16ToByteArray((ushort)controlFlags, binary, offset + 2);
int pointer = DtypUtility.SECURITY_DESCRIPTOR_FIXED_LENGTH;
if (Owner != null)
{
DtypUtility.WriteInt32ToByteArray(pointer, binary, offset + 4);
Owner.Value.GetBinaryForm(binary, offset + pointer);
pointer += Owner.Value.Size;
}
else
{
DtypUtility.WriteInt32ToByteArray(0, binary, offset + 4);
}
if (Group != null)
{
DtypUtility.WriteInt32ToByteArray(pointer, binary, offset + 8);
Group.Value.GetBinaryForm(binary, offset + pointer);
pointer += Group.Value.Size;
}
else
{
DtypUtility.WriteInt32ToByteArray(0, binary, offset + 8);
}
_RawAcl sacl = this.SACL;
if (this.controlFlags.HasFlag(SECURITY_DESCRIPTOR_Control.SACLPresent))
{
DtypUtility.WriteInt32ToByteArray(pointer, binary, offset + 12);
sacl.GetBinaryForm(binary, offset + pointer);
pointer += this.SACL.Size;
}
else
{
DtypUtility.WriteInt32ToByteArray(0, binary, offset + 12);
}
_RawAcl dacl = this.DACL;
if (this.controlFlags.HasFlag(SECURITY_DESCRIPTOR_Control.DACLPresent))
{
DtypUtility.WriteInt32ToByteArray(pointer, binary, offset + 16);
dacl.GetBinaryForm(binary, offset + pointer);
pointer += this.DACL.Size;
}
else
{
DtypUtility.WriteInt32ToByteArray(0, binary, offset + 16);
}
}
