75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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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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