private void Send(string msg, Socket s, Secure secure) { if (msg.Length >= 8192) { return; } string enc = secure.AES256Encrypt(msg) + ""; //Log.log("Send \""+ Bytes.getRawString(Bytes.AETB(enc)) + "\""); s.Send(Bytes.AETB(enc)); }
public int WannaSendTo(string ip, string path) { try { determined.Invoke(true); Log.clientLog("Connecting to " + ip); Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); IPEndPoint iPEnd = new IPEndPoint(IPAddress.Parse(ip), CONTROL_PORT); socket.Connect(iPEnd); socket.SendBufferSize = 262144; socket.ReceiveBufferSize = 262144; Send("handshake" + VERSION, socket); string reply = Receive(socket); var j1 = JObject.Parse(reply); IPEndPoint remoteEndPoint = socket.RemoteEndPoint as IPEndPoint; if (j1.Value <string>("reply").Equals("deny")) { Log.clientLog("Denied: " + j1.Value <string>("reason"), Log.WARN); reason = j1.Value <string>("reason").ToString(); determined.Invoke(false); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"" + reason + "\"}"); return(DENIED); } else if (!j1.Value <string>("reply").Equals("approve")) { Log.clientLog("Invalid message: " + reply, Log.ERR); reason = "invalid: " + reply; determined.Invoke(false); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"invalid_msg\"}"); return(ERROR); } Log.clientLog("RSA public key was received"); string pubKey = Receive(socket); Secure.RSASystem rsa = new Secure.RSASystem(pubKey); Secure secure = new Secure { Key = "32" }; Send(rsa.Encrypt(secure.Key), socket); Log.clientLog("Replied AES key"); //get IV Send(rsa.Encrypt(Setting.Actual_IV), socket); secure.SetIV(Setting.Actual_IV); Log.clientLog("IV was sent"); //Get Allow JObject pack = new JObject(); if (!File.Exists(path)) { Log.clientLog("File not exists(or it is directory): " + path, Log.ERR); pack.Add("reply", "FileErr"); Send(pack.ToString(), socket, secure); reason = "FileNotFound"; determined.Invoke(false); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"file_error\"}"); return(ERROR); } FileInfo file = new FileInfo(path); pack.Add("reply", "OK"); pack.Add("name", file.Name); pack.Add("size", file.Length); Log.clientLog("File data: " + file.Name + " " + file.Length + " Bytes"); Send(pack.ToString(), socket, secure); string received = Receive(socket, secure); if (received.Equals("deny")) { Log.clientLog("User denied", Log.WARN); reason = "Peer denied"; determined.Invoke(false); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"user_deny\"}"); return(DENIED); } else if (!received.Equals("approve")) { Log.clientLog("User invalid reply", Log.ERR); reason = "invalid: " + received; determined.Invoke(false); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"invalid_msg\"}"); return(ERROR); } Log.clientLog("Received Allow Sign!"); //Get hash and send: MD5; Log.clientLog("Computing hash"); byte[] hashValue; string stringHashValue; MD5 hash = MD5.Create(); using (FileStream stream = File.OpenRead(file.FullName)) { hashValue = hash.ComputeHash(stream); stringHashValue = Bytes.getRawString(hashValue); } Log.clientLog("Sending hash: " + stringHashValue); Send(stringHashValue, socket, secure); //Send start; Log.clientLog("Local file stream connected"); FileStream fileStream = file.OpenRead(); //const int sendingBufferSize = 320; //320B const int sendingBufferSize = 131072; //128KB //const int sendingBufferSize = 1048576; //1MB //const int sendingBufferSize = 524288; //0.5MB Log.clientLog("Sending pieces"); initializer.Invoke((int)((file.Length + (sendingBufferSize - (file.Length % sendingBufferSize))) / sendingBufferSize)); Log.log((file.Length + (sendingBufferSize - (file.Length % sendingBufferSize))) / sendingBufferSize + " Pieces"); int packets = 0; while (true) { byte[] sendingBuffer = new byte[sendingBufferSize]; byte[] encryptedSendingBuffer = new byte[sendingBufferSize + 16]; int read = fileStream.Read(sendingBuffer, 0, sendingBufferSize); //Log.clientLog("Read " + read + " bytes"); //Log.clientLog("Encryption started"); byte[] fitByteBuffer = new byte[read]; Array.Copy(sendingBuffer, fitByteBuffer, read); encryptedSendingBuffer = secure.AES256Encrypt(fitByteBuffer); string thisData = Convert.ToBase64String(encryptedSendingBuffer); //Log.clientLog("Encryption done"); JObject packet = new JObject(); string packetHash = Bytes.getRawString(hash.ComputeHash(fitByteBuffer)); packet.Add("segment", thisData); packet.Add("hash", packetHash); packet.Add("isEnd", read < sendingBufferSize); thisData = null; encryptedSendingBuffer = null; string replied; int attemp = 0; do { attemp++; //Log.clientLog("Sending data piece: " + (String)packet.GetValue("hash")); Send(packet.ToString(), socket); //Log.clientLog("Waiting for response"); replied = Receive(socket, secure); //Log.clientLog("File segment reply: \"" + replied + "\", Attemp: "+attemp); } while (!replied.Equals("ok")); // Retry if hash is not correct adder.Invoke(); packets++; if (read < sendingBufferSize) { break; } } Log.clientLog("Waiting for hash test result"); string hashReply = Receive(socket, secure); if (hashReply.Equals("hash")) { Log.clientLog("Hash Error: originHash=\"" + stringHashValue + '\"'); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"hash_mismatch\"}"); } else if (!hashReply.Equals("goodbye")) { Log.clientLog("Invalid hash reply: " + hashReply); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"invalid_msg\"}"); return(ERROR); } socket.Close(); fileStream.Close(); Log.clientLog("Done: sent " + packets + " file pieces"); history.RegisterHistory(NetworkHistory.COMMU_TYPE.OUTGOING_SHARE, remoteEndPoint.Address.ToString(), "{\"file\":\"" + path + "\",\"status\":\"sucess\"}"); return(SUCESS); } catch (Exception e) { Log.clientLog(e.Message + " client error", Log.ERR); return(ERROR); } }