mirror of
https://bitbucket.org/Ioncannon/project-meteor-server.git
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406 lines
16 KiB
C#
406 lines
16 KiB
C#
/*
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===========================================================================
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Copyright (C) 2015-2019 Project Meteor Dev Team
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This file is part of Project Meteor Server.
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Project Meteor Server is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Project Meteor Server is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with Project Meteor Server. If not, see <https:www.gnu.org/licenses/>.
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===========================================================================
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*/
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using Meteor.Common;
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namespace Meteor.World.DataObjects
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{
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class LuaUtils
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{
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public class Type7Param
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{
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public uint actorId;
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public byte unknown;
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public byte slot;
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public byte inventoryType;
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public Type7Param(uint actorId, byte unknown, byte slot, byte inventoryType)
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{
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this.actorId = actorId;
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this.unknown = unknown;
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this.slot = slot;
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this.inventoryType = inventoryType;
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}
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}
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public class Type9Param
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{
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public ulong item1;
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public ulong item2;
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public Type9Param(ulong item1, ulong item2)
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{
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this.item1 = item1;
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this.item2 = item2;
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}
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}
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public static List<LuaParam> ReadLuaParams(BinaryReader reader)
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{
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List<LuaParam> luaParams = new List<LuaParam>();
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bool isDone = false;
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while (true)
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{
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byte code = reader.ReadByte();
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object value = null;
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bool wasNil = false;
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switch (code)
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{
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case 0x0: //Int32
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value = Utils.SwapEndian(reader.ReadInt32());
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break;
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case 0x1: //Int32
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value = Utils.SwapEndian(reader.ReadUInt32());
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break;
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case 0x2: //Null Termed String
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List<byte> list = new List<byte>();
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while(true){
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byte readByte = reader.ReadByte();
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if (readByte == 0)
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break;
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list.Add(readByte);
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}
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value = Encoding.ASCII.GetString(list.ToArray());
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break;
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case 0x3: //Boolean True
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value = true;
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break;
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case 0x4: //Boolean False
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value = false;
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break;
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case 0x5: //Nil
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wasNil = true;
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break;
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case 0x6: //Actor (By Id)
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value = Utils.SwapEndian(reader.ReadUInt32());
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break;
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case 0x7: //Weird one used for inventory
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uint type7ActorId = Utils.SwapEndian(reader.ReadUInt32());
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byte type7Unknown = reader.ReadByte();
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byte type7Slot = reader.ReadByte();
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byte type7InventoryType = reader.ReadByte();
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value = new Type7Param(type7ActorId, type7Unknown, type7Slot, type7InventoryType);
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break;
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case 0x9: //Two Longs (only storing first one)
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value = new Type9Param(Utils.SwapEndian(reader.ReadUInt64()), Utils.SwapEndian(reader.ReadUInt64()));
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break;
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case 0xC: //Byte
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value = reader.ReadByte();
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break;
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case 0x1B: //Short?
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value = reader.ReadUInt16();
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break;
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case 0xF: //End
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isDone = true;
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continue;
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}
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if (isDone)
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break;
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if (value != null)
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luaParams.Add(new LuaParam(code, value));
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else if (wasNil)
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luaParams.Add(new LuaParam(code, value));
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}
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return luaParams;
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}
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public static void WriteLuaParams(BinaryWriter writer, List<LuaParam> luaParams)
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{
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foreach (LuaParam l in luaParams)
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{
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if (l.typeID == 0x1)
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writer.Write((Byte)0);
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else
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writer.Write((Byte)l.typeID);
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switch (l.typeID)
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{
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case 0x0: //Int32
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writer.Write((Int32)Utils.SwapEndian((Int32)l.value));
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break;
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case 0x1: //Int32
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writer.Write((UInt32)Utils.SwapEndian((UInt32)l.value));
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break;
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case 0x2: //Null Termed String
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string sv = (string)l.value;
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writer.Write(Encoding.ASCII.GetBytes(sv), 0, Encoding.ASCII.GetByteCount(sv));
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writer.Write((Byte)0);
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break;
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case 0x3: //Boolean True
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break;
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case 0x4: //Boolean False
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break;
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case 0x5: //Nil
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break;
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case 0x6: //Actor (By Id)
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writer.Write((UInt32)Utils.SwapEndian((UInt32)l.value));
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break;
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case 0x7: //Weird one used for inventory
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Type7Param type7 = (Type7Param)l.value;
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writer.Write((UInt32)Utils.SwapEndian((UInt32)type7.actorId));
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writer.Write((Byte)type7.unknown);
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writer.Write((Byte)type7.slot);
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writer.Write((Byte)type7.inventoryType);
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break;
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case 0x9: //Two Longs (only storing first one)
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writer.Write((UInt64)Utils.SwapEndian(((Type9Param)l.value).item1));
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writer.Write((UInt64)Utils.SwapEndian(((Type9Param)l.value).item2));
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break;
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case 0xC: //Byte
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writer.Write((Byte)l.value);
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break;
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case 0x1B: //Short?
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break;
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case 0xF: //End
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continue;
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}
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}
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writer.Write((Byte)0xF);
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}
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public static List<LuaParam> ReadLuaParams(byte[] bytesIn)
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{
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List<LuaParam> luaParams = new List<LuaParam>();
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using (MemoryStream memStream = new MemoryStream(bytesIn))
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{
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using (BinaryReader reader = new BinaryReader(memStream))
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{
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bool isDone = false;
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while (true)
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{
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byte code = reader.ReadByte();
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object value = null;
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bool wasNil = false;
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switch (code)
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{
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case 0x0: //Int32
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value = Utils.SwapEndian(reader.ReadInt32());
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break;
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case 0x1: //Int32
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value = Utils.SwapEndian(reader.ReadUInt32());
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break;
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case 0x2: //Null Termed String
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List<byte> list = new List<byte>();
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while (true)
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{
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byte readByte = reader.ReadByte();
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if (readByte == 0)
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break;
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list.Add(readByte);
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}
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value = Encoding.ASCII.GetString(list.ToArray());
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break;
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case 0x3: //Boolean True
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value = true;
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break;
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case 0x4: //Boolean False
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value = false;
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break;
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case 0x5: //Nil
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wasNil = true;
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break;
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case 0x6: //Actor (By Id)
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value = Utils.SwapEndian(reader.ReadUInt32());
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break;
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case 0x7: //Weird one used for inventory
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uint type7ActorId = Utils.SwapEndian(reader.ReadUInt32());
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byte type7Unknown = reader.ReadByte();
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byte type7Slot = reader.ReadByte();
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byte type7InventoryType = reader.ReadByte();
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value = new Type7Param(type7ActorId, type7Unknown, type7Slot, type7InventoryType);
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break;
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case 0x9: //Two Longs (only storing first one)
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value = new Type9Param(Utils.SwapEndian(reader.ReadUInt64()), Utils.SwapEndian(reader.ReadUInt64()));
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break;
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case 0xC: //Byte
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value = reader.ReadByte();
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break;
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case 0x1B: //Short?
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value = reader.ReadUInt16();
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break;
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case 0xF: //End
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isDone = true;
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continue;
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}
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if (isDone)
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break;
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if (value != null)
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luaParams.Add(new LuaParam(code, value));
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else if (wasNil)
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luaParams.Add(new LuaParam(code, value));
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}
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}
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}
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return luaParams;
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}
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public static List<LuaParam> CreateLuaParamList(params object[] list)
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{
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List<LuaParam> luaParams = new List<LuaParam>();
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foreach (object o in list)
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{
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if (o != null && o.GetType().IsArray)
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{
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Array arrayO = (Array)o;
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foreach (object o2 in arrayO)
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AddToList(o2, luaParams);
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}
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else
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AddToList(o, luaParams);
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}
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return luaParams;
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}
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private static void AddToList(object o, List<LuaParam> luaParams)
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{
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if (o is int)
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{
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luaParams.Add(new LuaParam(0x0, (int)o));
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}
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else if (o is uint)
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{
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luaParams.Add(new LuaParam(0x1, (uint)o));
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}
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else if (o is Double)
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{
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if (((double)o) % 1 == 0)
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luaParams.Add(new LuaParam(0x0, (int)(double)o));
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}
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else if (o is string)
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{
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luaParams.Add(new LuaParam(0x2, (string)o));
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}
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else if (o is bool)
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{
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if (((bool)o))
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luaParams.Add(new LuaParam(0x3, null));
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else
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luaParams.Add(new LuaParam(0x4, null));
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}
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else if (o == null)
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{
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luaParams.Add(new LuaParam(0x5, null));
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}
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else if (o is Session)
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{
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luaParams.Add(new LuaParam(0x6, (uint)((Session)o).sessionId));
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}
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else if (o is Type7Param)
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{
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luaParams.Add(new LuaParam(0x7, (Type7Param)o));
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}
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else if (o is Type9Param)
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{
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luaParams.Add(new LuaParam(0x9, (Type9Param)o));
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}
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else if (o is byte)
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{
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luaParams.Add(new LuaParam(0xC, (byte)o));
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}
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}
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public static object[] CreateLuaParamObjectList(List <LuaParam> luaParams)
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{
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object[] list = new object[luaParams.Count];
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for (int i = 0; i < list.Length; i++)
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list[i] = luaParams[i].value;
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return list;
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}
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public static string DumpParams(List<LuaParam> lParams)
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{
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if (lParams == null)
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return "Param list was null?";
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string dumpString = "";
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for (int i = 0; i < lParams.Count; i++)
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{
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switch (lParams[i].typeID)
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{
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case 0x0: //Int32
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dumpString += String.Format("0x{0:X}", (int)lParams[i].value);
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break;
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case 0x1: //Int32
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dumpString += String.Format("0x{0:X}", (uint)lParams[i].value);
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break;
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case 0x2: //Null Termed String
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dumpString += String.Format("\"{0}\"", (string)lParams[i].value);
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break;
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case 0x3: //Boolean True
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dumpString += "true";
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break;
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case 0x4: //Boolean False
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dumpString += "false";
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break;
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case 0x5: //NULL???
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dumpString += "nil";
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break;
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case 0x6: //Actor (By Id)
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dumpString += String.Format("0x{0:X}", (uint)lParams[i].value);
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break;
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case 0x7: //Weird one used for inventory
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Type7Param type7Param = ((Type7Param)lParams[i].value);
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dumpString += String.Format("Type7 Param: (0x{0:X}, 0x{1:X}, 0x{2:X}, 0x{3:X})", type7Param.actorId, type7Param.unknown, type7Param.slot, type7Param.inventoryType);
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break;
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case 0xC: //Byte
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dumpString += String.Format("0x{0:X}", (byte)lParams[i].value);
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break;
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case 0x9: //Long (+ 8 bytes ignored)
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Type9Param type9Param = ((Type9Param)lParams[i].value);
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dumpString += String.Format("Type9 Param: (0x{0:X}, 0x{1:X})", type9Param.item1, type9Param.item2);
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break;
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case 0x1B: //Short?
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dumpString += String.Format("0x{0:X}", (ushort)lParams[i].value);
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break;
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case 0xF: //End
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break;
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}
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if (i != lParams.Count - 1)
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dumpString += ", ";
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}
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return dumpString;
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}
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}
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}
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