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Do protocol decryption in-place (with CryptoAPI on Windows) (#5145)

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Tiger Wang
2021-03-08 16:37:36 +00:00
committed by GitHub
parent 3daf253b7f
commit 01a4e696b3
10 changed files with 206 additions and 174 deletions
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11
src/Protocol/ProtocolRecognizer.h
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@@ -19,6 +19,9 @@
protocol version instance and redirects everything to it. */
class cMultiVersionProtocol
{
// Work around the style checker complaining about && in template.
using OwnedContiguousByteBuffer = ContiguousByteBuffer &&;
public:
cMultiVersionProtocol();
@@ -39,7 +42,7 @@ public:
}
/** The function that's responsible for processing incoming protocol data. */
std::function<void(cClientHandle &, std::string_view)> HandleIncomingData;
std::function<void(cClientHandle &, OwnedContiguousByteBuffer)> HandleIncomingData;
/** Sends a disconnect to the client as a result of a recognition error.
This function can be used to disconnect before any protocol has been recognised. */
@@ -50,14 +53,14 @@ private:
/** Handles data reception in a newly-created client handle that doesn't yet have a known protocol.
a_Data contains a view of data that were just received.
Tries to recognize a protocol, populate m_Protocol, and transitions to another mode depending on success. */
void HandleIncomingDataInRecognitionStage(cClientHandle & a_Client, std::string_view a_Data);
void HandleIncomingDataInRecognitionStage(cClientHandle & a_Client, ContiguousByteBuffer && a_Data);
/** Handles and responds to unsupported clients sending pings. */
void HandleIncomingDataInOldPingResponseStage(cClientHandle & a_Client, std::string_view a_Data);
void HandleIncomingDataInOldPingResponseStage(cClientHandle & a_Client, ContiguousByteBufferView a_Data);
/** Tries to recognize a protocol in the lengthed family (1.7+), based on m_Buffer.
Returns a cProtocol_XXX instance if recognized. */
std::unique_ptr<cProtocol> TryRecognizeLengthedProtocol(cClientHandle & a_Client, std::string_view a_Data);
std::unique_ptr<cProtocol> TryRecognizeLengthedProtocol(cClientHandle & a_Client);
/** Sends one packet inside a cByteBuffer.
This is used only when handling an outdated server ping. */