88 lines
3.2 KiB
C++
88 lines
3.2 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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#include "mtproto/connection_abstract.h"
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#include "mtproto/connection_tcp.h"
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#include "mtproto/connection_http.h"
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#include "mtproto/connection_auto.h"
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namespace MTP {
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namespace internal {
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AbstractConnection::~AbstractConnection() {
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}
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mtpBuffer AbstractConnection::preparePQFake(const MTPint128 &nonce) {
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MTPReq_pq req_pq(nonce);
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mtpBuffer buffer;
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uint32 requestSize = req_pq.innerLength() >> 2;
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buffer.resize(0);
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buffer.reserve(8 + requestSize);
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buffer.push_back(0); // tcp packet len
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buffer.push_back(0); // tcp packet num
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buffer.push_back(0);
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buffer.push_back(0);
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buffer.push_back(0);
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buffer.push_back(unixtime());
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buffer.push_back(requestSize * 4);
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req_pq.write(buffer);
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buffer.push_back(0); // tcp crc32 hash
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return buffer;
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}
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MTPResPQ AbstractConnection::readPQFakeReply(const mtpBuffer &buffer) {
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const mtpPrime *answer(buffer.constData());
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uint32 len = buffer.size();
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if (len < 5) {
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LOG(("Fake PQ Error: bad request answer, len = %1").arg(len * sizeof(mtpPrime)));
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DEBUG_LOG(("Fake PQ Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
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throw Exception("bad pq reply");
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}
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if (answer[0] != 0 || answer[1] != 0 || (((uint32)answer[2]) & 0x03) != 1/* || (unixtime() - answer[3] > 300) || (answer[3] - unixtime() > 60)*/) { // didnt sync time yet
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LOG(("Fake PQ Error: bad request answer start (%1 %2 %3)").arg(answer[0]).arg(answer[1]).arg(answer[2]));
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DEBUG_LOG(("Fake PQ Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
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throw Exception("bad pq reply");
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}
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uint32 answerLen = (uint32)answer[4];
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if (answerLen != (len - 5) * sizeof(mtpPrime)) {
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LOG(("Fake PQ Error: bad request answer %1 <> %2").arg(answerLen).arg((len - 5) * sizeof(mtpPrime)));
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DEBUG_LOG(("Fake PQ Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
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throw Exception("bad pq reply");
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}
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const mtpPrime *from(answer + 5), *end(from + len - 5);
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MTPResPQ response;
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response.read(from, end);
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return response;
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}
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AbstractConnection *AbstractConnection::create(DcType type, QThread *thread) {
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if ((type == DcType::Temporary) || (Global::ConnectionType() == dbictTcpProxy)) {
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return new TCPConnection(thread);
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} else if (Global::ConnectionType() == dbictHttpProxy) {
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return new HTTPConnection(thread);
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}
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return new AutoConnection(thread);
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}
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} // namespace internal
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} // namespace MTP
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