328 lines
15 KiB
C#
328 lines
15 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Net.Sockets;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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namespace MSGer.tk
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{
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static class Networking
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{
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public enum UpdateType : byte
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{
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ListUpdate = 0x01, //0x01: OK
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UpdateMessages, //0x01: OK
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GetImage, //(int)0: Hiba, egyébként a kép hossza, majd a kép
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LoginUser, //0x00: Hiba - Egyébként minden fontos információ, amiről "lemaradt"
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LogoutUser, //0x01: OK
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SetKey, //0x01: OK
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KeepAlive,
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};
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public static UdpClient SenderConnection = new UdpClient(); //2014.09.04. - Ezt ne társítsa egy porthoz, hogy működjön az udp hole punching
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public static UdpClient ReceiverConnection = new UdpClient(); //2014.09.04. - Társítsa egy porthoz
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public static byte[] DataBuffer;
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public static IPEndPoint RemoteEP;
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public static bool WaitingOnResponse = false; //2014.08.16.
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public static byte WaitingOnPacket = 0x00; //2014.08.16. - 0x00: Nincs
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public static byte[][] SendUpdate(UpdateType ut, byte[] data, bool response)
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{
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if (UserInfo.IPs.Count == 0)
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return null;
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byte[] senddata = CreatePacket(response, (byte)ut, data);
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if (UserInfo.BanTime < Environment.TickCount - 1000 * 60 * 1) //2014.08.30. - 2014.10.09. - 10 percről 1-re csökkentve
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UserInfo.BannedIPs = new List<IPEndPoint>(); //2014.08.30.
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if (!response)
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{ //2014.08.30. - Azelőtt állítsa be, hogy elküldené a lekéréseket, hogy biztosan reagáljon a válaszra
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WaitingOnResponse = true; //2014.08.16.
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WaitingOnPacket = (byte)ut; //2014.08.16.
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}
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foreach (var item in UserInfo.IPs)
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{ //Elküldi az összes ismert címre
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try
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{
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if (!UserInfo.BannedIPs.Contains(item))
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//SenderConnection.Send(Storage.Encrypt(senddata.ToArray(), "sendupdatestringencrypted"), senddata.Count, item);
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SenderConnection.Send(senddata, senddata.Length, item);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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if (!response)
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{
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int lasttick = Environment.TickCount;
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List<byte[]> Ret = new List<byte[]>();
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List<IPEndPoint> ResponsedIPs = new List<IPEndPoint>();
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int count = 0;
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while (Environment.TickCount - 1000 * 10 < lasttick && ResponsedIPs.Count < UserInfo.IPs.Count - UserInfo.BannedIPs.Count) //2014.09.09. - 2014.10.09. - 60 mp --> 10 mp
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{ //2014.08.19. - Ret.Count == tmp.Length
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if (MainForm.LThread != null) //2014.09.06.
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{
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while (DataBuffer == null && Environment.TickCount - 1000 * count * 2 < lasttick) ; //Várakozik, amíg a másik thread át nem adja a választ - 2014.10.09. - 10 mp --> 2 mp
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foreach (var item in UserInfo.IPs.Except(UserInfo.BannedIPs).Except(ResponsedIPs)) //2014.09.22.
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{ //Elküldi az összes ismert címre
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try
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{
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SenderConnection.Send(senddata, senddata.Length, item);
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}
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catch (ObjectDisposedException)
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{
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return null;
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}
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}
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count++;
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}
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if (DataBuffer == null) //2014.08.30. - Az idő telt le
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{
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UserInfo.BannedIPs = UserInfo.IPs.Except(ResponsedIPs).ToList(); //2014.08.30. - Ideiglenesen kitilt minden IP-t, ahonnan nem érkezett válasz
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UserInfo.BanTime = Environment.TickCount;
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break;
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}
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if (UserInfo.IPs.Contains(RemoteEP) && !UserInfo.BannedIPs.Contains(RemoteEP))
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{
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ResponsedIPs.Add(RemoteEP);
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var pparts = ParsePacket(DataBuffer);
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if (pparts.KeyVersion != CurrentUser.KeyIndex && pparts.UpdateType != UpdateType.SetKey)
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{
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DataBuffer = null; //2014.09.22. - Mindig adja meg a lehetőséget, hogy újra beállítsa
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continue;
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}
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int i;
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for (i = 0; i < Ret.Count; i++)
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{
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if (DataBuffer.SequenceEqual(Ret[i]))
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break;
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}
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if (i == Ret.Count)
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Ret.Add(DataBuffer);
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} //(2014.08.17. -->) Várja meg, amíg az összes online(!) ismerőse válaszol - Vagy letelik az egy perc
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DataBuffer = null; //2014.09.22. - Mindig adja meg a lehetőséget, hogy újra beállítsa
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}
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DataBuffer = null;
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RemoteEP = null;
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WaitingOnResponse = false;
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WaitingOnPacket = 0x00;
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return Ret.ToArray();
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}
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return null;
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}
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public static bool SendChatMessage(ChatForm chat, string message)
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{ //2014.09.22.
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List<byte> bytes = new List<byte>();
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string sendstr = "";
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foreach (var pID in chat.ChatPartners)
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{
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sendstr += pID + ",";
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}
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bytes.AddRange(BitConverter.GetBytes(Encoding.Unicode.GetByteCount(sendstr)));
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bytes.AddRange(Encoding.Unicode.GetBytes(sendstr));
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sendstr = message; //Átállítja a sendstr-t az üzenetre, majd újra belerakja
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bytes.AddRange(BitConverter.GetBytes(Encoding.Unicode.GetByteCount(sendstr)));
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bytes.AddRange(Encoding.Unicode.GetBytes(sendstr));
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sendstr = Program.DateTimeToUnixTime(DateTime.Now);
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bytes.AddRange(BitConverter.GetBytes(Encoding.Unicode.GetByteCount(sendstr)));
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bytes.AddRange(Encoding.Unicode.GetBytes(sendstr));
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byte[][] resp = SendUpdate(UpdateType.UpdateMessages, Encoding.Unicode.GetBytes(sendstr), false);
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if (resp == null || resp.Length == 0 || resp.All(bytesb => bytesb[0] != 0x01))
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return false;
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else //Ha válaszoltak, és senki sem válaszolt nem oké jelzéssel, akkor rendben van
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return true;
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}
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public static object[] ReceiveUpdates() //Thread function
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{
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IPEndPoint remoteEP;
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remoteEP = new IPEndPoint(IPAddress.Any, Int32.Parse(Storage.Settings["port"])); //2014.09.04. - A port beállítása már megtörtént
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byte[] buf;
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try
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{
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buf = ReceiverConnection.Receive(ref remoteEP);
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}
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catch
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{
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return null;
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}
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if (buf[0] == 0x01) //0x01: Válasz egy kérelemre
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{
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if (WaitingOnResponse == false || WaitingOnPacket != buf[1])
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return null;
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while (DataBuffer != null) ; //Várja meg, amíg feldolgozza a legutóbbi adatot
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DataBuffer = buf; //2014.09.19. - Küldön el mindenhova mindent, és egységesen egy funkcióval dolgozza fel
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RemoteEP = remoteEP;
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return null;
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}
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else
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return new object[] { buf, remoteEP };
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}
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public static string[] GetStrings(byte[] bytes, int startIndex)
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{
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List<string> strs = new List<string>();
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int pos = startIndex;
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while (pos < bytes.Length)
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{
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int len = BitConverter.ToInt32(bytes, pos);
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pos += 4;
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strs.Add(Encoding.Unicode.GetString(bytes, pos, len));
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}
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return strs.ToArray();
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}
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public static void ParseUpdateInfo(byte[][] bytes)
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{
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if (bytes == null)
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return;
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for (int i = 0; i < bytes.Length; i++)
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{
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byte[] data = ParsePacket(bytes[i]).Data;
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string[] strs = Encoding.Unicode.GetString(data).Split(new string[] { "\n", "\n\r" }, StringSplitOptions.RemoveEmptyEntries); //2014.09.19.
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string str = "";
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for (int j = 0; j < strs.Length; j++)
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{
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string[] spl = strs[j].Split('_'); //2014.08.30.
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int uid = Int32.Parse(spl[0]); //2014.08.30.
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string[] keyvalue = spl[1].Split('='); //2014.08.30.
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if (keyvalue[0] == "ispartner")
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{ //2014.08.30.
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string resp = Networking.SendRequest("ispartner", uid + "", 0, true);
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if (resp == "yes")
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str += "userinfo_" + uid + "_ispartner=True";
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else if (resp == "no")
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str += "userinfo_" + uid + "_ispartner=False";
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else
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MessageBox.Show("ispartner:\n" + resp);
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}
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else
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str += "userinfo_" + strs[j];
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if (j + 1 != strs.Length)
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str += "\n";
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}
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Storage.Parse(str);
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}
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}
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public static void ParsePacket(byte[] bytes, out byte response, out UpdateType updatetype, out int keyversion, out int userid, out byte[] data)
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{ //2014.09.15.
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if (CurrentUser.Keys[CurrentUser.KeyIndex] != null)
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bytes = Storage.Encrypt(bytes, CurrentUser.Keys[CurrentUser.KeyIndex]);
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else
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bytes = Storage.Encrypt(bytes, "ihavenokeys");
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response = bytes[0];
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updatetype = (UpdateType)bytes[1];
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keyversion = BitConverter.ToInt32(bytes, 1 + 1);
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userid = BitConverter.ToInt32(bytes, 1 + 1 + 4);
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data = new byte[bytes.Length - 1 - 1 - 4 - 4];
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Array.Copy(bytes, 2 + 4 + 4, data, 0, data.Length);
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}
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public struct PacketParts
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{
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public bool Response;
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public UpdateType UpdateType;
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public int KeyVersion;
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public int UserID;
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public byte[] Data;
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};
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public static PacketParts ParsePacket(byte[] bytes)
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{ //2014.09.15.
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if (CurrentUser.Keys[CurrentUser.KeyIndex] != null)
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bytes = Storage.Encrypt(bytes, CurrentUser.Keys[CurrentUser.KeyIndex]);
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else
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bytes = Storage.Encrypt(bytes, "ihavenokeys");
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var ret = new PacketParts();
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ret.Response = (bytes[0] == 0x01) ? true : false;
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ret.UpdateType = (UpdateType)bytes[1];
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ret.KeyVersion = BitConverter.ToInt32(bytes, 1 + 1);
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ret.UserID = BitConverter.ToInt32(bytes, 1 + 1 + 4);
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ret.Data = new byte[bytes.Length - 1 - 1 - 4 - 4];
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Array.Copy(bytes, 2 + 4 + 4, ret.Data, 0, ret.Data.Length);
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return ret;
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}
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public static byte[] CreatePacket(bool response, byte updatetype, byte[] data)
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{ //2014.09.15.
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List<byte> senddata = new List<byte>();
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senddata.Add((response) ? (byte)0x01 : (byte)0x00); //0x00: Kérelem/Adatküldés, 0x01: Válasz
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senddata.Add(updatetype);
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senddata.AddRange(BitConverter.GetBytes(CurrentUser.KeyIndex));
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List<byte> sendd = new List<byte>();
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sendd.AddRange(BitConverter.GetBytes(CurrentUser.UserID));
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sendd.AddRange(data);
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if (CurrentUser.Keys[CurrentUser.KeyIndex] != null)
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senddata.AddRange(Storage.Encrypt(sendd.ToArray(), CurrentUser.Keys[CurrentUser.KeyIndex]));
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else
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senddata.AddRange(Storage.Encrypt(sendd.ToArray(), "ihavenokeys"));
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return senddata.ToArray();
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}
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private static int Tries = 0;
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public static string SendRequest(string action, string data, int remnum, bool loggedin) //2014.02.18.
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{
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#if LOCAL_SERVER //2014.07.07. 22:00
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HttpWebRequest httpWReq =
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(HttpWebRequest)WebRequest.Create("http://localhost/ChatWithWords/client.php");
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#else
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HttpWebRequest httpWReq =
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(HttpWebRequest)WebRequest.Create("http://msger.url.ph/client.php");
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#endif
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ASCIIEncoding encoding = new ASCIIEncoding();
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string postData = "action=" + action;
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if (loggedin) //2014.03.14.
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postData += "&uid=" + CurrentUser.UserID;
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postData += "&key=cas1fe4a6feFEFEFE1616CE8099VFE1444cdasf48c1ase5dg";
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if (loggedin) //2014.03.14.
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postData += "&code=" + LoginForm.UserCode; //2014.02.13.
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postData += "&data=" + Uri.EscapeUriString(data); //2014.02.13.
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byte[] datax = encoding.GetBytes(postData);
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httpWReq.Method = "POST";
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httpWReq.ContentType = "application/x-www-form-urlencoded";
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httpWReq.ContentLength = datax.Length;
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using (Stream stream = httpWReq.GetRequestStream())
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{
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stream.Write(datax, 0, datax.Length);
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}
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HttpWebResponse response;
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try
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{
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response = (HttpWebResponse)httpWReq.GetResponse();
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}
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catch (Exception e)
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{
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if (Tries > 10)
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{
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MessageBox.Show(Language.Translate("error_network") + ":\n" + e.Message + "\n\n" + Language.Translate("error_network2"), Language.Translate("error")); //2014.04.25.
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Tries = 0;
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}
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Tries++;
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return SendRequest(action, data, remnum, loggedin); //Újrapróbálkozik
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}
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string responseString;
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responseString = Uri.UnescapeDataString(new StreamReader(response.GetResponseStream()).ReadToEnd());
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return responseString;
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}
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public static void KeepUpThread()
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{ //2014.08.28.
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Thread.Sleep(59 * 60 * 1000); //59 percenként frissíti a jelenlétét, így biztosan nem jelenti offline-nak a PHP (elvileg)
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Console.WriteLine("KeepUpThread: " + Networking.SendRequest("keepactive", "", 0, true));
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}
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public static void KeepUpUsersThread() //2014.09.26. - Nehogy bezáruljon a kapcsolat
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{
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Thread.Sleep(1000);
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Networking.SendUpdate(UpdateType.KeepAlive, new byte[] { 0x01 }, false);
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}
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}
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}
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