merge common implementations and server implementations

Emby.Server.Implementations/IO/SharpCifs/Dcerpc/DcerpcMessage.cs

@@ -0,0 +1,150 @@
+// This code is derived from jcifs smb client library <jcifs at samba dot org>
+// Ported by J. Arturo <webmaster at komodosoft dot net>
+//  
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// 
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+// 
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+using SharpCifs.Dcerpc.Ndr;
+
+namespace SharpCifs.Dcerpc
+{
+	public abstract class DcerpcMessage : NdrObject
+	{
+		protected internal int Ptype = -1;
+
+		protected internal int Flags;
+
+		protected internal int Length;
+
+		protected internal int CallId;
+
+		protected internal int AllocHint;
+
+		protected internal int Result;
+
+		public virtual bool IsFlagSet(int flag)
+		{
+			return (Flags & flag) == flag;
+		}
+
+		public virtual void UnsetFlag(int flag)
+		{
+			Flags &= ~flag;
+		}
+
+		public virtual void SetFlag(int flag)
+		{
+			Flags |= flag;
+		}
+
+		public virtual DcerpcException GetResult()
+		{
+			if (Result != 0)
+			{
+				return new DcerpcException(Result);
+			}
+			return null;
+		}
+
+		internal virtual void Encode_header(NdrBuffer buf)
+		{
+			buf.Enc_ndr_small(5);
+			buf.Enc_ndr_small(0);
+			buf.Enc_ndr_small(Ptype);
+			buf.Enc_ndr_small(Flags);
+			buf.Enc_ndr_long(unchecked(0x00000010));
+			buf.Enc_ndr_short(Length);
+			buf.Enc_ndr_short(0);
+			buf.Enc_ndr_long(CallId);
+		}
+
+		/// <exception cref="SharpCifs.Dcerpc.Ndr.NdrException"></exception>
+		internal virtual void Decode_header(NdrBuffer buf)
+		{
+			if (buf.Dec_ndr_small() != 5 || buf.Dec_ndr_small() != 0)
+			{
+				throw new NdrException("DCERPC version not supported");
+			}
+			Ptype = buf.Dec_ndr_small();
+			Flags = buf.Dec_ndr_small();
+			if (buf.Dec_ndr_long() != unchecked(0x00000010))
+			{
+				throw new NdrException("Data representation not supported");
+			}
+			Length = buf.Dec_ndr_short();
+			if (buf.Dec_ndr_short() != 0)
+			{
+				throw new NdrException("DCERPC authentication not supported");
+			}
+			CallId = buf.Dec_ndr_long();
+		}
+
+		/// <exception cref="SharpCifs.Dcerpc.Ndr.NdrException"></exception>
+		public override void Encode(NdrBuffer buf)
+		{
+			int start = buf.GetIndex();
+			int allocHintIndex = 0;
+			buf.Advance(16);
+			if (Ptype == 0)
+			{
+				allocHintIndex = buf.GetIndex();
+				buf.Enc_ndr_long(0);
+				buf.Enc_ndr_short(0);
+				buf.Enc_ndr_short(GetOpnum());
+			}
+			Encode_in(buf);
+			Length = buf.GetIndex() - start;
+			if (Ptype == 0)
+			{
+				buf.SetIndex(allocHintIndex);
+				AllocHint = Length - allocHintIndex;
+				buf.Enc_ndr_long(AllocHint);
+			}
+			buf.SetIndex(start);
+			Encode_header(buf);
+			buf.SetIndex(start + Length);
+		}
+
+		/// <exception cref="SharpCifs.Dcerpc.Ndr.NdrException"></exception>
+		public override void Decode(NdrBuffer buf)
+		{
+			Decode_header(buf);
+			if (Ptype != 12 && Ptype != 2 && Ptype != 3 && Ptype != 13)
+			{
+				throw new NdrException("Unexpected ptype: " + Ptype);
+			}
+			if (Ptype == 2 || Ptype == 3)
+			{
+				AllocHint = buf.Dec_ndr_long();
+				buf.Dec_ndr_short();
+				buf.Dec_ndr_short();
+			}
+			if (Ptype == 3 || Ptype == 13)
+			{
+				Result = buf.Dec_ndr_long();
+			}
+			else
+			{
+				Decode_out(buf);
+			}
+		}
+
+		public abstract int GetOpnum();
+
+		/// <exception cref="SharpCifs.Dcerpc.Ndr.NdrException"></exception>
+		public abstract void Encode_in(NdrBuffer dst);
+
+		/// <exception cref="SharpCifs.Dcerpc.Ndr.NdrException"></exception>
+		public abstract void Decode_out(NdrBuffer src);
+	}
+}