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Improve some paddings.

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This commit is contained in:
John Preston 2021-06-24 16:29:48 +04:00
parent 7decf68122
commit a2c33545d4
10 changed files with 7 additions and 43 deletions
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4
Telegram/SourceFiles/mtproto/connection_abstract.cpp
View File

@ -189,9 +189,7 @@ ConnectionPointer AbstractConnection::Create(
}
uint32 AbstractConnection::extendedNotSecurePadding() const {
return requiresExtendedPadding()
? uint32(openssl::RandomValue<uchar>() & 0x3F)
: 0;
return uint32(openssl::RandomValue<uchar>() & 0x3F);
}
} // namespace details

3
Telegram/SourceFiles/mtproto/connection_abstract.h
View File

@ -92,9 +92,6 @@ public:
[[nodiscard]] virtual bool needHttpWait() {
return false;
}
[[nodiscard]] virtual bool requiresExtendedPadding() const {
return false;
}
[[nodiscard]] virtual int32 debugState() const = 0;

6
Telegram/SourceFiles/mtproto/connection_resolving.cpp
View File

@ -198,12 +198,6 @@ void ResolvingConnection::sendData(mtpBuffer &&buffer) {
_child->sendData(std::move(buffer));
}
bool ResolvingConnection::requiresExtendedPadding() const {
Expects(_child != nullptr);
return _child->requiresExtendedPadding();
}
void ResolvingConnection::disconnectFromServer() {
_address = QString();
_port = 0;

1
Telegram/SourceFiles/mtproto/connection_resolving.h
View File

@ -35,7 +35,6 @@ public:
int16 protocolDcId,
bool protocolForFiles) override;
bool isConnected() const override;
bool requiresExtendedPadding() const override;
int32 debugState() const override;

17
Telegram/SourceFiles/mtproto/connection_tcp.cpp
View File

@ -35,7 +35,6 @@ public:
virtual uint32 id() const = 0;
virtual bool supportsArbitraryLength() const = 0;
virtual bool requiresExtendedPadding() const = 0;
virtual void prepareKey(bytes::span key, bytes::const_span source) = 0;
virtual bytes::span finalizePacket(mtpBuffer &buffer) = 0;
@ -58,7 +57,6 @@ public:
uint32 id() const override;
bool supportsArbitraryLength() const override;
bool requiresExtendedPadding() const override;
void prepareKey(bytes::span key, bytes::const_span source) override;
bytes::span finalizePacket(mtpBuffer &buffer) override;
@ -75,10 +73,6 @@ bool TcpConnection::Protocol::Version0::supportsArbitraryLength() const {
return false;
}
bool TcpConnection::Protocol::Version0::requiresExtendedPadding() const {
return false;
}
void TcpConnection::Protocol::Version0::prepareKey(
bytes::span key,
bytes::const_span source) {
@ -142,7 +136,6 @@ class TcpConnection::Protocol::Version1 : public Version0 {
public:
explicit Version1(bytes::vector &&secret);
bool requiresExtendedPadding() const override;
void prepareKey(bytes::span key, bytes::const_span source) override;
private:
@ -154,10 +147,6 @@ TcpConnection::Protocol::Version1::Version1(bytes::vector &&secret)
: _secret(std::move(secret)) {
}
bool TcpConnection::Protocol::Version1::requiresExtendedPadding() const {
return true;
}
void TcpConnection::Protocol::Version1::prepareKey(
bytes::span key,
bytes::const_span source) {
@ -425,12 +414,6 @@ void TcpConnection::socketDisconnected() {
}
}
bool TcpConnection::requiresExtendedPadding() const {
Expects(_protocol != nullptr);
return _protocol->requiresExtendedPadding();
}
void TcpConnection::sendData(mtpBuffer &&buffer) {
Expects(buffer.size() > 2);

1
Telegram/SourceFiles/mtproto/connection_tcp.h
View File

@ -36,7 +36,6 @@ public:
bool protocolForFiles) override;
void timedOut() override;
bool isConnected() const override;
bool requiresExtendedPadding() const override;
int32 debugState() const override;

2
Telegram/SourceFiles/mtproto/details/mtproto_dc_key_binder.cpp
View File

@ -25,7 +25,7 @@ namespace {
auto serialized = SerializedRequest::Serialize(data);
serialized.setMsgId(realMsgId);
serialized.setSeqNo(0);
serialized.addPadding(false, true);
serialized.addPadding(true);
constexpr auto kMsgIdPosition = SerializedRequest::kMessageIdPosition;
constexpr auto kMinMessageSize = 5;

12
Telegram/SourceFiles/mtproto/details/mtproto_serialized_request.cpp
View File

@ -14,7 +14,6 @@ namespace {
uint32 CountPaddingPrimesCount(
uint32 requestSize,
bool extended,
bool forAuthKeyInner) {
if (forAuthKeyInner) {
return ((8 + requestSize) & 0x03)
@ -30,12 +29,8 @@ uint32 CountPaddingPrimesCount(
result += 4;
}
if (extended) {
// Some more random padding.
result += ((openssl::RandomValue<uchar>() & 0x0F) << 2);
}
return result;
// Some more random padding.
return result + ((openssl::RandomValue<uchar>() & 0x0F) << 2);
}
} // namespace
@ -103,14 +98,13 @@ uint32 SerializedRequest::getSeqNo() const {
return uint32((*_data)[kSeqNoPosition]);
}
void SerializedRequest::addPadding(bool extended, bool forAuthKeyInner) {
void SerializedRequest::addPadding(bool forAuthKeyInner) {
Expects(_data != nullptr);
Expects(_data->size() > kMessageBodyPosition);
const auto requestSize = (tl::count_length(*this) >> 2);
const auto padding = CountPaddingPrimesCount(
requestSize,
extended,
forAuthKeyInner);
const auto fullSize = kMessageBodyPosition + requestSize + padding;
if (uint32(_data->size()) != fullSize) {

2
Telegram/SourceFiles/mtproto/details/mtproto_serialized_request.h
View File

@ -65,7 +65,7 @@ public:
void setSeqNo(uint32 seqNo);
[[nodiscard]] uint32 getSeqNo() const;
void addPadding(bool extended, bool forAuthKeyInner);
void addPadding(bool forAuthKeyInner);
[[nodiscard]] uint32 messageSize() const;
[[nodiscard]] bool needAck() const;

2
Telegram/SourceFiles/mtproto/session_private.cpp
View File

@ -2596,7 +2596,7 @@ void SessionPrivate::destroyTemporaryKey() {
bool SessionPrivate::sendSecureRequest(
SerializedRequest &&request,
bool needAnyResponse) {
request.addPadding(_connection->requiresExtendedPadding(), false);
request.addPadding(false);
uint32 fullSize = request->size();
if (fullSize < 9) {