Initial commit of Command & Conquer Generals and Command & Conquer Generals Zero Hour source code.

GeneralsMD/Code/Tools/mangler/mangler.h

@@ -0,0 +1,79 @@
+/*
+**	Command & Conquer Generals Zero Hour(tm)
+**	Copyright 2025 Electronic Arts Inc.
+**
+**	This program is free software: you can redistribute it and/or modify
+**	it under the terms of the GNU General Public License as published by
+**	the Free Software Foundation, either version 3 of the License, or
+**	(at your option) any later version.
+**
+**	This program 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 General Public License for more details.
+**
+**	You should have received a copy of the GNU General Public License
+**	along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __MANGLER_H__
+#define __MANGLER_H__
+
+// Packet should consist of a GlobalHeaderType followed by a GlobalPacketType with the fields set as
+// indicated.
+
+
+/*
+********************************** Defines **********************************
+*/
+
+// This is the number of additional ports to which to reply.
+#define BLITZ_SIZE 3
+
+#define	MPLAYER_NAME_MAX	20
+#define SERIAL_MAX			23
+typedef unsigned char ForwardMaskType;
+typedef enum NetCommandType {
+	NET_MANGLER_REQUEST = 43,
+	NET_MANGLER_RESPONSE = 44
+} NetCommandType;
+
+/*
+** One byte alignment.
+*/
+#if !defined(__GNUC__)
+#pragma pack(push, 1)
+#define PACK
+#else
+#define PACK __attribute__ ((__packed__))
+#endif
+
+// size = 20 bytes
+struct ManglerData {
+	unsigned int		CRC PACK;
+	unsigned short	magic PACK;
+	unsigned short	packetID PACK;
+	unsigned short	MyMangledPortNumber PACK;
+	unsigned short	OriginalPortNumber PACK;
+	unsigned char		MyMangledAddress[4] PACK;
+	unsigned char		NetCommandType PACK;
+	unsigned char		BlitzMe PACK;
+	unsigned short	Padding PACK;
+};
+
+/*
+   This is for older GCC versions that can't do byte-packing.
+   Instead of declaring
+	GlobalPacketType p;
+	p.Command = NET_MANGLER_REQUEST;
+   you would do something like this:
+	GlobalPacketStruct p;
+	Eval(&p, GPCommand, NetCommandType) = NET_MANGLER_REQUEST;
+*/
+#define Eval(x, y, z) ( *((z *)(&((x)->payload[(y)]))) )
+
+#if !defined(__GNUC__)
+#pragma pack(pop)
+#endif
+
+#endif // __MANGLER_H__