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Code Issues Releases Wiki Activity

Handle new paddings in improved TCP protocol.

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This commit is contained in:
John Preston
2018-06-25 22:18:27 +01:00
parent 22441ef80c
commit 941288b58e
6 changed files with 199 additions and 110 deletions
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45
Telegram/SourceFiles/mtproto/connection.cpp
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@@ -1415,7 +1415,7 @@ void ConnectionPrivate::handleReceived() {
}
auto encryptedInts = ints + kExternalHeaderIntsCount;
auto encryptedIntsCount = (intsCount - kExternalHeaderIntsCount);
auto encryptedIntsCount = (intsCount - kExternalHeaderIntsCount) & ~0x03U;
auto encryptedBytesCount = encryptedIntsCount * kIntSize;
auto decryptedBuffer = QByteArray(encryptedBytesCount, Qt::Uninitialized);
auto msgKey = *(MTPint128*)(ints + 2);
@@ -3062,35 +3062,22 @@ template <typename Response>
bool ConnectionPrivate::readNotSecureResponse(Response &response) {
onReceivedSome();
if (_connection->received().empty()) {
LOG(("AuthKey Error: "
"trying to read response from empty received list"));
return false;
}
const auto buffer = std::move(_connection->received().front());
_connection->received().pop_front();
const auto answer = _connection->parseNotSecureResponse(buffer);
if (answer.empty()) {
return false;
}
try {
if (_connection->received().empty()) {
LOG(("AuthKey Error: trying to read response from empty received list"));
return false;
}
auto buffer = std::move(_connection->received().front());
_connection->received().pop_front();
auto answer = buffer.constData();
auto len = buffer.size();
if (len < 5) {
LOG(("AuthKey Error: bad request answer, len = %1").arg(len * sizeof(mtpPrime)));
DEBUG_LOG(("AuthKey Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
return false;
}
if (answer[0] != 0 || answer[1] != 0 || (((uint32)answer[2]) & 0x03) != 1/* || (unixtime() - answer[3] > 300) || (answer[3] - unixtime() > 60)*/) { // didnt sync time yet
LOG(("AuthKey Error: bad request answer start (%1 %2 %3)").arg(answer[0]).arg(answer[1]).arg(answer[2]));
DEBUG_LOG(("AuthKey Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
return false;
}
uint32 answerLen = (uint32)answer[4];
if (answerLen != (len - 5) * sizeof(mtpPrime)) {
LOG(("AuthKey Error: bad request answer %1 <> %2").arg(answerLen).arg((len - 5) * sizeof(mtpPrime)));
DEBUG_LOG(("AuthKey Error: answer bytes %1").arg(Logs::mb(answer, len * sizeof(mtpPrime)).str()));
return false;
}
const mtpPrime *from(answer + 5), *end(from + len - 5);
response.read(from, end);
auto from = answer.data();
response.read(from, from + answer.size());
} catch (Exception &) {
return false;
}