terraria-source-code/Terraria/ServerSock.cs

using Microsoft.Xna.Framework;
using System;
using System.Net.Sockets;
namespace Terraria
{
	public class ServerSock
	{
		public Socket clientSocket;
		public NetworkStream networkStream;
		public TcpClient tcpClient = new TcpClient();
		public int whoAmI;
		public string statusText2;
		public int statusCount;
		public int statusMax;
		public bool[,] tileSection = new bool[Main.maxTilesX / 200 + 1, Main.maxTilesY / 150 + 1];
		public string statusText = "";
		public bool active;
		public bool locked;
		public bool kill;
		public int timeOut;
		public bool announced;
		public string name = "Anonymous";
		public string oldName = "";
		public int state;
		public float spamProjectile;
		public float spamAddBlock;
		public float spamDelBlock;
		public float spamWater;
		public float spamProjectileMax = 100f;
		public float spamAddBlockMax = 100f;
		public float spamDelBlockMax = 500f;
		public float spamWaterMax = 50f;
		public byte[] readBuffer;
		public byte[] writeBuffer;
		public void SpamUpdate()
		{
			if (!Netplay.spamCheck)
			{
				this.spamProjectile = 0f;
				this.spamDelBlock = 0f;
				this.spamAddBlock = 0f;
				this.spamWater = 0f;
				return;
			}
			if (this.spamProjectile > this.spamProjectileMax)
			{
				NetMessage.BootPlayer(this.whoAmI, "Cheating attempt detected: Projectile spam");
			}
			if (this.spamAddBlock > this.spamAddBlockMax)
			{
				NetMessage.BootPlayer(this.whoAmI, "Cheating attempt detected: Add tile spam");
			}
			if (this.spamDelBlock > this.spamDelBlockMax)
			{
				NetMessage.BootPlayer(this.whoAmI, "Cheating attempt detected: Remove tile spam");
			}
			if (this.spamWater > this.spamWaterMax)
			{
				NetMessage.BootPlayer(this.whoAmI, "Cheating attempt detected: Liquid spam");
			}
			this.spamProjectile -= 0.4f;
			if (this.spamProjectile < 0f)
			{
				this.spamProjectile = 0f;
			}
			this.spamAddBlock -= 0.3f;
			if (this.spamAddBlock < 0f)
			{
				this.spamAddBlock = 0f;
			}
			this.spamDelBlock -= 5f;
			if (this.spamDelBlock < 0f)
			{
				this.spamDelBlock = 0f;
			}
			this.spamWater -= 0.2f;
			if (this.spamWater < 0f)
			{
				this.spamWater = 0f;
			}
		}
		public void SpamClear()
		{
			this.spamProjectile = 0f;
			this.spamAddBlock = 0f;
			this.spamDelBlock = 0f;
			this.spamWater = 0f;
		}
		public static void CheckSection(int who, Vector2 position)
		{
			int sectionX = Netplay.GetSectionX((int)(position.X / 16f));
			int sectionY = Netplay.GetSectionY((int)(position.Y / 16f));
			int num = 0;
			for (int i = sectionX - 1; i < sectionX + 2; i++)
			{
				for (int j = sectionY - 1; j < sectionY + 2; j++)
				{
					if (i >= 0 && i < Main.maxSectionsX && j >= 0 && j < Main.maxSectionsY && !Netplay.serverSock[who].tileSection[i, j])
					{
						num++;
					}
				}
			}
			if (num > 0)
			{
				int num2 = num * 150;
				NetMessage.SendData(9, who, -1, "Receiving tile data", num2, 0f, 0f, 0f, 0);
				Netplay.serverSock[who].statusText2 = "is receiving tile data";
				Netplay.serverSock[who].statusMax += num2;
				for (int k = sectionX - 1; k < sectionX + 2; k++)
				{
					for (int l = sectionY - 1; l < sectionY + 2; l++)
					{
						if (k >= 0 && k < Main.maxSectionsX && l >= 0 && l < Main.maxSectionsY && !Netplay.serverSock[who].tileSection[k, l])
						{
							NetMessage.SendSection(who, k, l);
							NetMessage.SendData(11, who, -1, "", k, (float)l, (float)k, (float)l, 0);
						}
					}
				}
			}
		}
		public bool SectionRange(int size, int firstX, int firstY)
		{
			for (int i = 0; i < 4; i++)
			{
				int num = firstX;
				int num2 = firstY;
				if (i == 1)
				{
					num += size;
				}
				if (i == 2)
				{
					num2 += size;
				}
				if (i == 3)
				{
					num += size;
					num2 += size;
				}
				int sectionX = Netplay.GetSectionX(num);
				int sectionY = Netplay.GetSectionY(num2);
				if (this.tileSection[sectionX, sectionY])
				{
					return true;
				}
			}
			return false;
		}
		public void Reset()
		{
			for (int i = 0; i < Main.maxSectionsX; i++)
			{
				for (int j = 0; j < Main.maxSectionsY; j++)
				{
					this.tileSection[i, j] = false;
				}
			}
			if (this.whoAmI < 255)
			{
				Main.player[this.whoAmI] = new Player();
			}
			this.timeOut = 0;
			this.statusCount = 0;
			this.statusMax = 0;
			this.statusText2 = "";
			this.statusText = "";
			this.name = "Anonymous";
			this.state = 0;
			this.locked = false;
			this.kill = false;
			this.SpamClear();
			this.active = false;
			NetMessage.buffer[this.whoAmI].Reset();
			if (this.networkStream != null)
			{
				this.networkStream.Close();
			}
			if (this.tcpClient != null)
			{
				this.tcpClient.Close();
			}
		}
		public void ServerWriteCallBack(IAsyncResult ar)
		{
			NetMessage.buffer[this.whoAmI].spamCount--;
			if (this.statusMax > 0)
			{
				this.statusCount++;
			}
		}
		public void ServerReadCallBack(IAsyncResult ar)
		{
			int num = 0;
			if (!Netplay.disconnect)
			{
				try
				{
					num = this.networkStream.EndRead(ar);
				}
				catch
				{
				}
				if (num == 0)
				{
					this.kill = true;
				}
				else
				{
					if (Main.ignoreErrors)
					{
						try
						{
							NetMessage.RecieveBytes(this.readBuffer, num, this.whoAmI);
							goto IL_57;
						}
						catch
						{
							goto IL_57;
						}
					}
					NetMessage.RecieveBytes(this.readBuffer, num, this.whoAmI);
				}
			}
			IL_57:
			this.locked = false;
		}
	}
}