119 lines
2.9 KiB
C++
119 lines
2.9 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop version of Telegram messaging app, see https://telegram.org
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Telegram Desktop is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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It is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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In addition, as a special exception, the copyright holders give permission
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to link the code of portions of this program with the OpenSSL library.
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Full license: https://github.com/telegramdesktop/tdesktop/blob/master/LICENSE
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Copyright (c) 2014-2017 John Preston, https://desktop.telegram.org
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*/
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#pragma once
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#include "mtproto/core_types.h"
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#include "mtproto/auth_key.h"
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#include "mtproto/connection_abstract.h"
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namespace MTP {
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namespace internal {
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class AbstractTCPConnection : public AbstractConnection {
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Q_OBJECT
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public:
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AbstractTCPConnection(QThread *thread);
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virtual ~AbstractTCPConnection() = 0;
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public slots:
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void socketRead();
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protected:
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QTcpSocket sock;
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uint32 packetNum; // sent packet number
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uint32 packetRead, packetLeft; // reading from socket
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bool readingToShort;
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char *currentPos;
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mtpBuffer longBuffer;
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mtpPrime shortBuffer[MTPShortBufferSize];
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virtual void socketPacket(const char *packet, uint32 length) = 0;
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static mtpBuffer handleResponse(const char *packet, uint32 length);
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static void handleError(QAbstractSocket::SocketError e, QTcpSocket &sock);
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static uint32 fourCharsToUInt(char ch1, char ch2, char ch3, char ch4) {
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char ch[4] = { ch1, ch2, ch3, ch4 };
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return *reinterpret_cast<uint32*>(ch);
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}
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void tcpSend(mtpBuffer &buffer);
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uchar _sendKey[CTRState::KeySize];
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CTRState _sendState;
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uchar _receiveKey[CTRState::KeySize];
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CTRState _receiveState;
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};
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class TCPConnection : public AbstractTCPConnection {
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Q_OBJECT
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public:
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TCPConnection(QThread *thread);
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void sendData(mtpBuffer &buffer) override;
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void disconnectFromServer() override;
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void connectTcp(const DcOptions::Endpoint &endpoint) override;
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void connectHttp(const DcOptions::Endpoint &endpoint) override { // not supported
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}
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bool isConnected() const override;
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int32 debugState() const override;
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QString transport() const override;
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public slots:
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void socketError(QAbstractSocket::SocketError e);
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void onSocketConnected();
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void onSocketDisconnected();
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void onTcpTimeoutTimer();
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protected:
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void socketPacket(const char *packet, uint32 length) override;
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private:
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enum Status {
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WaitingTcp = 0,
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UsingTcp,
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FinishedWork
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};
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Status status;
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MTPint128 tcpNonce;
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QString _addr;
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int32 _port, _tcpTimeout;
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MTPDdcOption::Flags _flags;
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QTimer tcpTimeoutTimer;
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};
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} // namespace internal
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} // namespace MTP
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