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TLSharp and Tests
This commit is contained in:
Ilya Pirozhneko
parent
9cf850e9b8
commit
3bb487a194
39 changed files with 21943 additions and 0 deletions
458
TLSharp.Core/Network/MtProtoSender.cs
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458
TLSharp.Core/Network/MtProtoSender.cs
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using Ionic.Zlib;
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using TLSharp.Core.MTProto;
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using TLSharp.Core.MTProto.Crypto;
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using TLSharp.Core.Requests;
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using TLSharp.Core.Utils;
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namespace TLSharp.Core.Network
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{
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public class MtProtoSender
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{
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//private ulong sessionId = GenerateRandomUlong();
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private TcpTransport _transport;
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private Session _session;
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public List<ulong> needConfirmation = new List<ulong>();
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public MtProtoSender(TcpTransport transport, Session session)
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{
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_transport = transport;
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_session = session;
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}
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private int GenerateSequence(bool confirmed)
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{
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return confirmed ? _session.Sequence++ * 2 + 1 : _session.Sequence * 2;
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}
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public async Task Send(MTProtoRequest request)
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{
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// TODO: refactor
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if (needConfirmation.Any())
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{
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var ackRequest = new AckRequest(needConfirmation);
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using (var memory = new MemoryStream())
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using (var writer = new BinaryWriter(memory))
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{
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ackRequest.OnSend(writer);
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await Send(memory.ToArray(), ackRequest);
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needConfirmation.Clear();
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}
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}
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using (var memory = new MemoryStream())
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using (var writer = new BinaryWriter(memory))
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{
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request.OnSend(writer);
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await Send(memory.ToArray(), request);
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}
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_session.Save();
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}
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public async Task Send(byte[] packet, MTProtoRequest request)
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{
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request.MessageId = _session.GetNewMessageId();
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byte[] msgKey;
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byte[] ciphertext;
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using (MemoryStream plaintextPacket = makeMemory(8 + 8 + 8 + 4 + 4 + packet.Length))
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{
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using (BinaryWriter plaintextWriter = new BinaryWriter(plaintextPacket))
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{
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plaintextWriter.Write(_session.Salt);
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plaintextWriter.Write(_session.Id);
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plaintextWriter.Write(request.MessageId);
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plaintextWriter.Write(GenerateSequence(request.Confirmed));
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plaintextWriter.Write(packet.Length);
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plaintextWriter.Write(packet);
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msgKey = Helpers.CalcMsgKey(plaintextPacket.GetBuffer());
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ciphertext = AES.EncryptAES(Helpers.CalcKey(_session.AuthKey.Data, msgKey, true), plaintextPacket.GetBuffer());
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}
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}
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using (MemoryStream ciphertextPacket = makeMemory(8 + 16 + ciphertext.Length))
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{
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using (BinaryWriter writer = new BinaryWriter(ciphertextPacket))
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{
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writer.Write(_session.AuthKey.Id);
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writer.Write(msgKey);
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writer.Write(ciphertext);
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await _transport.Send(ciphertextPacket.GetBuffer());
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}
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}
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}
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private Tuple<byte[], ulong, int> DecodeMessage(byte[] body)
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{
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byte[] message;
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ulong remoteMessageId;
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int remoteSequence;
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using (MemoryStream inputStream = new MemoryStream(body))
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using (BinaryReader inputReader = new BinaryReader(inputStream))
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{
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ulong remoteAuthKeyId = inputReader.ReadUInt64(); // TODO: check auth key id
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byte[] msgKey = inputReader.ReadBytes(16); // TODO: check msg_key correctness
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AESKeyData keyData = Helpers.CalcKey(_session.AuthKey.Data, msgKey, false);
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byte[] plaintext = AES.DecryptAES(keyData, inputReader.ReadBytes((int)(inputStream.Length - inputStream.Position)));
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using (MemoryStream plaintextStream = new MemoryStream(plaintext))
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using (BinaryReader plaintextReader = new BinaryReader(plaintextStream))
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{
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var remoteSalt = plaintextReader.ReadUInt64();
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var remoteSessionId = plaintextReader.ReadUInt64();
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remoteMessageId = plaintextReader.ReadUInt64();
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remoteSequence = plaintextReader.ReadInt32();
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int msgLen = plaintextReader.ReadInt32();
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message = plaintextReader.ReadBytes(msgLen);
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}
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}
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return new Tuple<byte[], ulong, int>(message, remoteMessageId, remoteSequence);
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}
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public async Task<byte[]> Recieve(MTProtoRequest request)
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{
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while (!request.ConfirmReceived)
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{
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var result = DecodeMessage((await _transport.Receieve()).Body);
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using (MemoryStream messageStream = new MemoryStream(result.Item1, false))
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using (BinaryReader messageReader = new BinaryReader(messageStream))
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{
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processMessage(result.Item2, result.Item3, messageReader, request);
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}
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}
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return null;
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}
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private bool processMessage(ulong messageId, int sequence, BinaryReader messageReader, MTProtoRequest request)
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{
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// TODO: check salt
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// TODO: check sessionid
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// TODO: check seqno
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//logger.debug("processMessage: msg_id {0}, sequence {1}, data {2}", BitConverter.ToString(((MemoryStream)messageReader.BaseStream).GetBuffer(), (int) messageReader.BaseStream.Position, (int) (messageReader.BaseStream.Length - messageReader.BaseStream.Position)).Replace("-","").ToLower());
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needConfirmation.Add(messageId);
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uint code = messageReader.ReadUInt32();
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messageReader.BaseStream.Position -= 4;
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switch (code)
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{
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case 0x73f1f8dc: // container
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//logger.debug("MSG container");
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return HandleContainer(messageId, sequence, messageReader, request);
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case 0x7abe77ec: // ping
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//logger.debug("MSG ping");
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return HandlePing(messageId, sequence, messageReader);
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case 0x347773c5: // pong
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//logger.debug("MSG pong");
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return HandlePong(messageId, sequence, messageReader);
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case 0xae500895: // future_salts
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//logger.debug("MSG future_salts");
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return HandleFutureSalts(messageId, sequence, messageReader);
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case 0x9ec20908: // new_session_created
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//logger.debug("MSG new_session_created");
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return HandleNewSessionCreated(messageId, sequence, messageReader);
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case 0x62d6b459: // msgs_ack
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//logger.debug("MSG msds_ack");
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return HandleMsgsAck(messageId, sequence, messageReader);
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case 0xedab447b: // bad_server_salt
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//logger.debug("MSG bad_server_salt");
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return HandleBadServerSalt(messageId, sequence, messageReader, request);
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case 0xa7eff811: // bad_msg_notification
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//logger.debug("MSG bad_msg_notification");
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return HandleBadMsgNotification(messageId, sequence, messageReader);
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case 0x276d3ec6: // msg_detailed_info
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//logger.debug("MSG msg_detailed_info");
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return HandleMsgDetailedInfo(messageId, sequence, messageReader);
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case 0xf35c6d01: // rpc_result
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//logger.debug("MSG rpc_result");
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return HandleRpcResult(messageId, sequence, messageReader, request);
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case 0x3072cfa1: // gzip_packed
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//logger.debug("MSG gzip_packed");
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return HandleGzipPacked(messageId, sequence, messageReader, request);
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case 0xe317af7e:
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case 0xd3f45784:
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case 0x2b2fbd4e:
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case 0x78d4dec1:
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case 0x725b04c3:
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case 0x74ae4240:
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return HandleUpdate(messageId, sequence, messageReader);
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default:
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//logger.debug("unknown message: {0}", code);
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return false;
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}
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}
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private bool HandleUpdate(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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/*
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try
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{
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UpdatesEvent(TL.Parse<Updates>(messageReader));
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return true;
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}
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catch (Exception e)
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{
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logger.warning("update processing exception: {0}", e);
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return false;
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}
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*/
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}
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private bool HandleGzipPacked(ulong messageId, int sequence, BinaryReader messageReader, MTProtoRequest request)
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{
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uint code = messageReader.ReadUInt32();
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byte[] packedData = GZipStream.UncompressBuffer(Serializers.Bytes.read(messageReader));
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using (MemoryStream packedStream = new MemoryStream(packedData, false))
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using (BinaryReader compressedReader = new BinaryReader(packedStream))
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{
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processMessage(messageId, sequence, compressedReader, request);
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}
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return true;
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}
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private bool HandleRpcResult(ulong messageId, int sequence, BinaryReader messageReader, MTProtoRequest request)
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{
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uint code = messageReader.ReadUInt32();
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ulong requestId = messageReader.ReadUInt64();
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if (requestId == (ulong) request.MessageId)
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request.ConfirmReceived = true;
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//throw new NotImplementedException();
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/*
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lock (runningRequests)
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{
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if (!runningRequests.ContainsKey(requestId))
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{
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logger.warning("rpc response on unknown request: {0}", requestId);
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messageReader.BaseStream.Position -= 12;
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return false;
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}
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request = runningRequests[requestId];
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runningRequests.Remove(requestId);
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}
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*/
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uint innerCode = messageReader.ReadUInt32();
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if (innerCode == 0x2144ca19)
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{ // rpc_error
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int errorCode = messageReader.ReadInt32();
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string errorMessage = Serializers.String.read(messageReader);
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if (errorMessage.StartsWith("FLOOD_WAIT_"))
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{
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var resultString = Regex.Match(errorMessage, @"\d+").Value;
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var seconds = int.Parse(resultString);
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Debug.WriteLine($"Should wait {seconds} sec.");
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Thread.Sleep(1000*seconds);
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}
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else
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{
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throw new InvalidOperationException(errorMessage);
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}
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}
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else if (innerCode == 0x3072cfa1)
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{
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// gzip_packed
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byte[] packedData = Serializers.Bytes.read(messageReader);
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using (MemoryStream packedStream = new MemoryStream(packedData, false))
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using (GZipStream zipStream = new GZipStream(packedStream, CompressionMode.Decompress))
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using (BinaryReader compressedReader = new BinaryReader(zipStream))
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{
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request.OnResponse(compressedReader);
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}
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}
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else
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{
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messageReader.BaseStream.Position -= 4;
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request.OnResponse(messageReader);
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}
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return false;
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}
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private bool HandleMsgDetailedInfo(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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}
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private bool HandleBadMsgNotification(ulong messageId, int sequence, BinaryReader messageReader)
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{
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uint code = messageReader.ReadUInt32();
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ulong requestId = messageReader.ReadUInt64();
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int requestSequence = messageReader.ReadInt32();
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int errorCode = messageReader.ReadInt32();
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switch (errorCode)
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{
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case 16:
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throw new InvalidOperationException(" msg_id too low (most likely, client time is wrong; it would be worthwhile to synchronize it using msg_id notifications and re-send the original message with the “correct” msg_id or wrap it in a container with a new msg_id if the original message had waited too long on the client to be transmitted)");
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case 17:
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throw new InvalidOperationException(" msg_id too high (similar to the previous case, the client time has to be synchronized, and the message re-sent with the correct msg_id)");
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case 18:
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throw new InvalidOperationException("incorrect two lower order msg_id bits (the server expects client message msg_id to be divisible by 4)");
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case 19:
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throw new InvalidOperationException("container msg_id is the same as msg_id of a previously received message (this must never happen)");
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case 20:
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throw new InvalidOperationException("message too old, and it cannot be verified whether the server has received a message with this msg_id or not");
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case 32:
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throw new InvalidOperationException("msg_seqno too low (the server has already received a message with a lower msg_id but with either a higher or an equal and odd seqno)");
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case 33:
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throw new InvalidOperationException(" msg_seqno too high (similarly, there is a message with a higher msg_id but with either a lower or an equal and odd seqno)");
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case 34:
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throw new InvalidOperationException("an even msg_seqno expected (irrelevant message), but odd received");
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case 35:
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throw new InvalidOperationException("odd msg_seqno expected (relevant message), but even received");
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case 48:
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throw new InvalidOperationException("incorrect server salt (in this case, the bad_server_salt response is received with the correct salt, and the message is to be re-sent with it)");
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case 64:
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throw new InvalidOperationException("invalid container");
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}
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throw new NotImplementedException();
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/*
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logger.debug("bad_msg_notification: msgid {0}, seq {1}, errorcode {2}", requestId, requestSequence,
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errorCode);
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*/
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/*
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if (!runningRequests.ContainsKey(requestId))
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{
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logger.debug("bad msg notification on unknown request");
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return true;
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}
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*/
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//OnBrokenSessionEvent();
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//MTProtoRequest request = runningRequests[requestId];
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//request.OnException(new MTProtoBadMessageException(errorCode));
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return true;
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}
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private bool HandleBadServerSalt(ulong messageId, int sequence, BinaryReader messageReader, MTProtoRequest request)
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{
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uint code = messageReader.ReadUInt32();
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ulong badMsgId = messageReader.ReadUInt64();
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int badMsgSeqNo = messageReader.ReadInt32();
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int errorCode = messageReader.ReadInt32();
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ulong newSalt = messageReader.ReadUInt64();
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//logger.debug("bad_server_salt: msgid {0}, seq {1}, errorcode {2}, newsalt {3}", badMsgId, badMsgSeqNo, errorCode, newSalt);
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_session.Salt = newSalt;
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//resend
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Send(request);
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/*
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if(!runningRequests.ContainsKey(badMsgId)) {
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logger.debug("bad server salt on unknown message");
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return true;
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}
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*/
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//MTProtoRequest request = runningRequests[badMsgId];
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//request.OnException(new MTProtoBadServerSaltException(salt));
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return true;
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}
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private bool HandleMsgsAck(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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}
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private bool HandleNewSessionCreated(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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}
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private bool HandleFutureSalts(ulong messageId, int sequence, BinaryReader messageReader)
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{
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uint code = messageReader.ReadUInt32();
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ulong requestId = messageReader.ReadUInt64();
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messageReader.BaseStream.Position -= 12;
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throw new NotImplementedException();
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/*
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if (!runningRequests.ContainsKey(requestId))
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{
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logger.info("future salts on unknown request");
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return false;
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}
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*/
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// MTProtoRequest request = runningRequests[requestId];
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// runningRequests.Remove(requestId);
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// request.OnResponse(messageReader);
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return true;
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}
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private bool HandlePong(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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}
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private bool HandlePing(ulong messageId, int sequence, BinaryReader messageReader)
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{
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return false;
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}
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private bool HandleContainer(ulong messageId, int sequence, BinaryReader messageReader, MTProtoRequest request)
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{
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uint code = messageReader.ReadUInt32();
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int size = messageReader.ReadInt32();
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for (int i = 0; i < size; i++)
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{
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ulong innerMessageId = messageReader.ReadUInt64();
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int innerSequence = messageReader.ReadInt32();
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int innerLength = messageReader.ReadInt32();
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long beginPosition = messageReader.BaseStream.Position;
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try
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{
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if (!processMessage(innerMessageId, sequence, messageReader, request))
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{
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messageReader.BaseStream.Position = beginPosition + innerLength;
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}
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}
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catch (Exception e)
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{
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// logger.error("failed to process message in contailer: {0}", e);
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messageReader.BaseStream.Position = beginPosition + innerLength;
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}
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}
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return false;
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}
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private MemoryStream makeMemory(int len)
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{
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return new MemoryStream(new byte[len], 0, len, true, true);
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}
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}
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}
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