TShock/TShockAPI/GetDataHandlers.cs
2011-07-21 15:07:28 -06:00

611 lines
24 KiB
C#
Executable file

/*
TShock, a server mod for Terraria
Copyright (C) 2011 The TShock Team
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/>.
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Text;
using Microsoft.Xna.Framework;
using Terraria;
using TerrariaAPI;
using TShockAPI.Net;
using XNAHelpers;
namespace TShockAPI
{
public delegate bool GetDataHandlerDelegate(GetDataHandlerArgs args);
public class GetDataHandlerArgs : EventArgs
{
public TSPlayer Player { get; private set; }
public MemoryStream Data { get; private set; }
public Player TPlayer
{
get { return Player.TPlayer; }
}
public GetDataHandlerArgs(TSPlayer player, MemoryStream data)
{
Player = player;
Data = data;
}
}
public static class GetDataHandlers
{
private static Dictionary<PacketTypes, GetDataHandlerDelegate> GetDataHandlerDelegates;
private static bool[] BlacklistTiles;
public static void InitGetDataHandler()
{
#region Blacklisted tiles
BlacklistTiles = new bool[Main.maxTileSets];
BlacklistTiles[0] = true;
BlacklistTiles[1] = true;
BlacklistTiles[2] = true;
BlacklistTiles[6] = true;
BlacklistTiles[7] = true;
BlacklistTiles[8] = true;
BlacklistTiles[9] = true;
BlacklistTiles[22] = true;
BlacklistTiles[23] = true;
BlacklistTiles[25] = true;
BlacklistTiles[30] = true;
BlacklistTiles[37] = true;
BlacklistTiles[38] = true;
BlacklistTiles[39] = true;
BlacklistTiles[40] = true;
BlacklistTiles[41] = true;
BlacklistTiles[43] = true;
BlacklistTiles[44] = true;
BlacklistTiles[45] = true;
BlacklistTiles[46] = true;
BlacklistTiles[47] = true;
BlacklistTiles[53] = true;
BlacklistTiles[54] = true;
BlacklistTiles[56] = true;
BlacklistTiles[57] = true;
BlacklistTiles[58] = true;
BlacklistTiles[59] = true;
BlacklistTiles[60] = true;
BlacklistTiles[63] = true;
BlacklistTiles[64] = true;
BlacklistTiles[65] = true;
BlacklistTiles[66] = true;
BlacklistTiles[67] = true;
BlacklistTiles[68] = true;
BlacklistTiles[70] = true;
BlacklistTiles[75] = true;
BlacklistTiles[76] = true;
#endregion Blacklisted tiles
GetDataHandlerDelegates = new Dictionary<PacketTypes, GetDataHandlerDelegate>
{
{PacketTypes.PlayerInfo, HandlePlayerInfo},
{PacketTypes.TileSendSection, HandleSendSection},
{PacketTypes.PlayerUpdate, HandlePlayerUpdate},
{PacketTypes.Tile, HandleTile},
{PacketTypes.TileSendSquare, HandleSendTileSquare},
{PacketTypes.NPCUpdate, HandleNpcUpdate},
{PacketTypes.PlayerDamage, HandlePlayerDamage},
{PacketTypes.ProjectileNew, HandleProjectileNew},
{PacketTypes.TogglePVP, HandleTogglePvp},
{PacketTypes.TileKill, HandleTileKill},
{PacketTypes.PlayerKillMe, HandlePlayerKillMe},
{PacketTypes.LiquidSet, HandleLiquidSet},
{PacketTypes.PlayerSpawn, HandleSpawn},
{PacketTypes.SyncPlayers, HandleSync},
};
}
private static bool HandleSync(GetDataHandlerArgs args)
{
if (TShock.Config.EnableAntiLag)
{
Debug.WriteLine("FUCK SYNCS");
return true;
}
return false;
}
public static bool HandlerGetData(PacketTypes type, TSPlayer player, MemoryStream data)
{
GetDataHandlerDelegate handler;
if (GetDataHandlerDelegates.TryGetValue(type, out handler))
{
try
{
return handler(new GetDataHandlerArgs(player, data));
}
catch (Exception ex)
{
Log.Error(ex.ToString());
}
}
return false;
}
private static bool HandlePlayerInfo(GetDataHandlerArgs args)
{
byte playerid = args.Data.ReadInt8();
byte hair = args.Data.ReadInt8();
args.Data.Position += 21;
bool hardcore = args.Data.ReadBoolean();
string name = Encoding.ASCII.GetString(args.Data.ReadBytes((int)(args.Data.Length - args.Data.Position - 1)));
if (hair >= Main.maxHair)
{
Tools.ForceKick(args.Player, "Hair crash exploit.");
return true;
}
if (!Tools.ValidString(name))
{
Tools.ForceKick(args.Player, "Unprintable character in name");
return true;
}
if (name.Length > 32)
{
Tools.ForceKick(args.Player, "Name exceeded 32 characters.");
return true;
}
if (name.Trim().Length == 0)
{
Tools.ForceKick(args.Player, "Empty Name.");
return true;
}
var ban = TShock.Bans.GetBanByName(name);
if (ban != null)
{
Tools.ForceKick(args.Player, string.Format("You are banned: {0}", ban.Reason));
return true;
}
if (args.Player.ReceivedInfo)
{
return Tools.HandleGriefer(args.Player, "Sent client info more than once");
}
if (TShock.Config.HardcoreOnly && !hardcore)
{
Tools.ForceKick(args.Player, "Server is set to hardcore characters only!");
return true;
}
args.Player.ReceivedInfo = true;
return false;
}
private static bool HandleSendTileSquare(GetDataHandlerArgs args)
{
short size = args.Data.ReadInt16();
int tilex = args.Data.ReadInt32();
int tiley = args.Data.ReadInt32();
if (size > 5)
return true;
var tiles = new NetTile[size, size];
for (int x = 0; x < size; x++)
{
for (int y = 0; y < size; y++)
{
tiles[x, y] = new NetTile(args.Data);
}
}
bool changed = false;
for (int x = 0; x < size; x++)
{
int realx = tilex + x;
if (realx < 0 || realx >= Main.maxTilesX)
continue;
for (int y = 0; y < size; y++)
{
int realy = tiley + y;
if (realy < 0 || realy >= Main.maxTilesY)
continue;
var tile = Main.tile[realx, realy];
var newtile = tiles[x, y];
if (tile.type == 0x17 && newtile.Type == 0x2)
{
tile.type = 0x2;
changed = true;
}
else if (tile.type == 0x19 && newtile.Type == 0x1)
{
tile.type = 0x1;
changed = true;
}
else if ((tile.type == 0xF && newtile.Type == 0xF) ||
(tile.type == 0x4F && newtile.Type == 0x4F))
{
tile.frameX = newtile.FrameX;
tile.frameY = newtile.FrameY;
changed = true;
}
}
}
if (changed)
TSPlayer.All.SendTileSquare(tilex, tiley, 3);
return true;
}
private static bool HandleTile(GetDataHandlerArgs args)
{
byte type = args.Data.ReadInt8();
int x = args.Data.ReadInt32();
int y = args.Data.ReadInt32();
byte tiletype = args.Data.ReadInt8();
if (!args.Player.Group.HasPermission("canbuild"))
{
if (!args.Player.HasBeenSpammedWithBuildMessage)
{
args.Player.SendMessage("You do not have permission to build!", Color.Red);
args.Player.HasBeenSpammedWithBuildMessage = true;
}
args.Player.SendTileSquare(x, y);
return true;
}
if (type == 1 || type == 3)
{
int plyX = Math.Abs(args.Player.TileX);
int plyY = Math.Abs(args.Player.TileY);
int tileX = Math.Abs(x);
int tileY = Math.Abs(y);
if (TShock.Config.RangeChecks && ((Math.Abs(plyX - tileX) > 32) || (Math.Abs(plyY - tileY) > 32)))
{
if (!(type == 1 && ((tiletype == 0 && args.Player.TPlayer.selectedItem == 114) || (tiletype == 53 && args.Player.TPlayer.selectedItem == 266))))
{
Log.Debug(string.Format("TilePlaced(PlyXY:{0}_{1}, TileXY:{2}_{3}, Result:{4}_{5}, Type:{6})",
plyX, plyY, tileX, tileY, Math.Abs(plyX - tileX), Math.Abs(plyY - tileY), tiletype));
return Tools.HandleGriefer(args.Player, TShock.Config.RangeCheckBanReason);
}
}
if (tiletype == 48 && !args.Player.Group.HasPermission("canspike"))
{
args.Player.SendMessage("You do not have permission to place spikes.", Color.Red);
Tools.SendLogs(string.Format("{0} tried to place spikes", args.Player.Name), Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
}
if (!args.Player.Group.HasPermission("editspawn") && !TShock.Regions.CanBuild(x, y, args.Player) && TShock.Regions.InArea(x, y))
{
if ((DateTime.UtcNow - args.Player.LastTileChangeNotify).TotalMilliseconds > 1000)
{
args.Player.SendMessage("Region protected from changes.", Color.Red);
args.Player.LastTileChangeNotify = DateTime.UtcNow;
}
args.Player.SendTileSquare(x, y);
return true;
}
if (TShock.Config.DisableBuild)
{
if (!args.Player.Group.HasPermission("editspawn"))
{
if ((DateTime.UtcNow - args.Player.LastTileChangeNotify).TotalMilliseconds > 1000)
{
args.Player.SendMessage("World protected from changes.", Color.Red);
args.Player.LastTileChangeNotify = DateTime.UtcNow;
}
args.Player.SendTileSquare(x, y);
return true;
}
}
if (TShock.Config.SpawnProtection)
{
if (!args.Player.Group.HasPermission("editspawn"))
{
var flag = TShock.CheckSpawn(x, y);
if (flag)
{
if ((DateTime.UtcNow - args.Player.LastTileChangeNotify).TotalMilliseconds > 1000)
{
args.Player.SendMessage("Spawn protected from changes.", Color.Red);
args.Player.LastTileChangeNotify = DateTime.UtcNow;
}
args.Player.SendTileSquare(x, y);
return true;
}
}
}
if (type == 0 && BlacklistTiles[Main.tile[x, y].type] && args.Player.Active)
{
args.Player.TileThreshold++;
var coords = new Vector2(x, y);
if (!args.Player.TilesDestroyed.ContainsKey(coords))
args.Player.TilesDestroyed.Add(coords, Main.tile[x, y]);
}
if ((DateTime.UtcNow - args.Player.LastExplosive).TotalMilliseconds < 1000)
{
args.Player.SendMessage("Please wait another " + (1000 - (DateTime.UtcNow - args.Player.LastExplosive).TotalMilliseconds).ToString() + " milliseconds before placing/destroying tiles", Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
return false;
}
private static bool HandleTogglePvp(GetDataHandlerArgs args)
{
int id = args.Data.ReadByte();
bool pvp = args.Data.ReadBoolean();
long seconds = (long)(DateTime.UtcNow - args.Player.LastPvpChange).TotalSeconds;
if (TShock.Config.PvpThrottle > 0 && seconds < TShock.Config.PvpThrottle)
{
args.Player.SendMessage(string.Format("You cannot change pvp status for {0} seconds", TShock.Config.PvpThrottle - seconds), 255, 0, 0);
args.Player.SetPvP(id != args.Player.Index || TShock.Config.AlwaysPvP ? true : args.TPlayer.hostile);
}
else
{
args.Player.SetPvP(id != args.Player.Index || TShock.Config.AlwaysPvP ? true : pvp);
}
return true;
}
private static bool HandleSendSection(GetDataHandlerArgs args)
{
return Tools.HandleGriefer(args.Player, TShock.Config.SendSectionAbuseReason);
}
private static bool HandleNpcUpdate(GetDataHandlerArgs args)
{
return Tools.HandleGriefer(args.Player, TShock.Config.NPCSpawnAbuseReason);
}
private static bool HandlePlayerUpdate(GetDataHandlerArgs args)
{
byte plr = args.Data.ReadInt8();
byte control = args.Data.ReadInt8();
byte item = args.Data.ReadInt8();
float posx = args.Data.ReadSingle();
float posy = args.Data.ReadSingle();
float velx = args.Data.ReadSingle();
float vely = args.Data.ReadSingle();
if (Main.verboseNetplay)
Debug.WriteLine("Update: {{{0},{1}}} {{{2}, {3}}}", (int)posx, (int)posy, (int)velx, (int)vely);
if (plr != args.Player.Index)
{
return Tools.HandleGriefer(args.Player, TShock.Config.UpdatePlayerAbuseReason);
}
if (item < 0 || item >= args.TPlayer.inventory.Length)
{
Tools.HandleGriefer(args.Player, TShock.Config.UpdatePlayerAbuseReason);
return true;
}
return false;
}
private static bool HandleProjectileNew(GetDataHandlerArgs args)
{
short ident = args.Data.ReadInt16();
float posx = args.Data.ReadSingle();
float posy = args.Data.ReadSingle();
float velx = args.Data.ReadSingle();
float vely = args.Data.ReadSingle();
float knockback = args.Data.ReadSingle();
short dmg = args.Data.ReadInt16();
byte owner = args.Data.ReadInt8();
byte type = args.Data.ReadInt8();
if (type == 29 || type == 28 || type == 37)
{
Log.Debug(string.Format("Explosive(PlyXY:{0}_{1}, Type:{2})", args.Player.TileX, args.Player.TileY, type));
if (TShock.Config.DisableExplosives && (!args.Player.Group.HasPermission("useexplosives") || !args.Player.Group.HasPermission("ignoregriefdetection")))
{
Main.projectile[ident].type = 0;
args.Player.SendData(PacketTypes.ProjectileNew, "", ident);
args.Player.SendMessage("Explosives are disabled!", Color.Red);
args.Player.LastExplosive = DateTime.UtcNow;
//return true;
}
else
return Tools.HandleExplosivesUser(args.Player, TShock.Config.ExplosiveAbuseReason);
}
return false;
}
private static bool HandlePlayerKillMe(GetDataHandlerArgs args)
{
byte id = args.Data.ReadInt8();
if (id != args.Player.Index)
{
return Tools.HandleGriefer(args.Player, TShock.Config.KillMeAbuseReason);
}
return false;
}
private static bool HandlePlayerDamage(GetDataHandlerArgs args)
{
byte playerid = args.Data.ReadInt8();
if (TShock.Players[playerid] == null)
return true;
return !TShock.Players[playerid].TPlayer.hostile;
}
private static bool HandleLiquidSet(GetDataHandlerArgs args)
{
int x = args.Data.ReadInt32();
int y = args.Data.ReadInt32();
byte liquid = args.Data.ReadInt8();
bool lava = args.Data.ReadBoolean();
//The liquid was picked up.
if (liquid == 0)
return false;
int plyX = Math.Abs(args.Player.TileX);
int plyY = Math.Abs(args.Player.TileY);
int tileX = Math.Abs(x);
int tileY = Math.Abs(y);
bool bucket = false;
for (int i = 0; i < 44; i++)
{
if (args.TPlayer.inventory[i].type >= 205 && args.TPlayer.inventory[i].type <= 207)
{
bucket = true;
break;
}
}
if (!args.Player.Group.HasPermission("canbuild"))
{
args.Player.SendMessage("You do not have permission to build!", Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
if (lava && !args.Player.Group.HasPermission("canlava"))
{
args.Player.SendMessage("You do not have permission to use lava", Color.Red);
Tools.SendLogs(string.Format("{0} tried using lava", args.Player.Name), Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
if (!lava && !args.Player.Group.HasPermission("canwater"))
{
args.Player.SendMessage("You do not have permission to use water", Color.Red);
Tools.SendLogs(string.Format("{0} tried using water", args.Player.Name), Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
if (!bucket)
{
Log.Debug(string.Format("{0}(PlyXY:{1}_{2}, TileXY:{3}_{4}, Result:{5}_{6}, Amount:{7})",
lava ? "Lava" : "Water", plyX, plyY, tileX, tileY,
Math.Abs(plyX - tileX), Math.Abs(plyY - tileY), liquid));
return Tools.HandleGriefer(args.Player, TShock.Config.IllogicalLiquidUseReason); ;
}
if (TShock.Config.RangeChecks && ((Math.Abs(plyX - tileX) > 32) || (Math.Abs(plyY - tileY) > 32)))
{
Log.Debug(string.Format("Liquid(PlyXY:{0}_{1}, TileXY:{2}_{3}, Result:{4}_{5}, Amount:{6})",
plyX, plyY, tileX, tileY, Math.Abs(plyX - tileX), Math.Abs(plyY - tileY), liquid));
return Tools.HandleGriefer(args.Player, TShock.Config.LiquidAbuseReason); ;
}
if (TShock.Config.SpawnProtection)
{
if (!args.Player.Group.HasPermission("editspawn"))
{
var flag = TShock.CheckSpawn(x, y);
if (flag)
{
args.Player.SendMessage("The spawn is protected!", Color.Red);
args.Player.SendTileSquare(x, y);
return true;
}
}
}
return false;
}
private static bool HandleTileKill(GetDataHandlerArgs args)
{
int tilex = args.Data.ReadInt32();
int tiley = args.Data.ReadInt32();
if (tilex < 0 || tilex >= Main.maxTilesX || tiley < 0 || tiley >= Main.maxTilesY)
return false;
if (Main.tile[tilex, tiley].type != 0x15 && (!Tools.MaxChests() && Main.tile[tilex, tiley].type != 0)) //Chest
{
Log.Debug(string.Format("TileKill(TileXY:{0}_{1}, Type:{2})",
tilex, tiley, Main.tile[tilex, tiley].type));
Tools.ForceKick(args.Player, string.Format(TShock.Config.TileKillAbuseReason, Main.tile[tilex, tiley].type));
return true;
}
if (!args.Player.Group.HasPermission("canbuild"))
{
args.Player.SendMessage("You do not have permission to build!", Color.Red);
args.Player.SendTileSquare(tilex, tiley);
return true;
}
if (!args.Player.Group.HasPermission("editspawn") && !TShock.Regions.CanBuild(tilex, tiley, args.Player) && TShock.Regions.InArea(tilex, tiley))
{
args.Player.SendMessage("Region protected from changes.", Color.Red);
args.Player.SendTileSquare(tilex, tiley);
return true;
}
if (TShock.Config.DisableBuild)
{
if (!args.Player.Group.HasPermission("editspawn"))
{
args.Player.SendMessage("World protected from changes.", Color.Red);
args.Player.SendTileSquare(tilex, tiley);
return true;
}
}
if (TShock.Config.SpawnProtection)
{
if (!args.Player.Group.HasPermission("editspawn"))
{
var flag = TShock.CheckSpawn(tilex, tiley);
if (flag)
{
args.Player.SendMessage("Spawn protected from changes.", Color.Red);
args.Player.SendTileSquare(tilex, tiley);
return true;
}
}
}
return false;
}
private static bool HandleSpawn(GetDataHandlerArgs args)
{
byte player = args.Data.ReadInt8();
int spawnx = args.Data.ReadInt32();
int spawny = args.Data.ReadInt32();
if (args.Player.InitSpawn && args.TPlayer.inventory[args.TPlayer.selectedItem].type != 50)
{
if (args.TPlayer.hardCore && (TShock.Config.KickOnHardcoreDeath || TShock.Config.BanOnHardcoreDeath))
if (args.TPlayer.selectedItem != 50)
{
if (TShock.Config.BanOnHardcoreDeath)
{
if (!Tools.Ban(args.Player, TShock.Config.HardcoreBanReason))
Tools.ForceKick(args.Player, "Death results in a ban, but can't ban you");
}
else
{
Tools.ForceKick(args.Player, TShock.Config.HardcoreKickReason);
}
return true;
}
}
else
args.Player.InitSpawn = true;
return false;
}
}
}