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KDF and process Data message

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orignal 2022-03-25 15:34:43 -04:00
parent ee1c4f4fdc
commit 44735681af
2 changed files with 60 additions and 6 deletions
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19
libi2pd/SSU2.h
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@ -34,6 +34,7 @@ namespace transport
eSSU2SessionRequest = 0,
eSSU2SessionCreated = 1,
eSSU2SessionConfirmed = 2,
eSSU2Data = 6,
eSSU2Retry = 9,
eSSU2TokenRequest = 10
};
@ -64,6 +65,15 @@ namespace transport
eSSU2BlkPadding = 254
};
enum SSU2SessionState
{
eSSU2SessionStateUnknown,
eSSU2SessionStateEstablished,
eSSU2SessionStateClosed,
eSSU2SessionStateFailed
};
// RouterInfo flags
const uint8_t SSU2_ROUTER_INFO_FLAG_REQUEST_FLOOD = 0x01;
const uint8_t SSU2_ROUTER_INFO_FLAG_GZIP = 0x02;
@ -95,11 +105,13 @@ namespace transport
void Connect ();
void Done () override {};
void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) override {};
bool IsEstablished () const { return m_State == eSSU2SessionStateEstablished; };
void ProcessFirstIncomingMessage (uint64_t connID, uint8_t * buf, size_t len);
bool ProcessSessionCreated (uint8_t * buf, size_t len);
bool ProcessSessionConfirmed (uint8_t * buf, size_t len);
bool ProcessRetry (uint8_t * buf, size_t len);
void ProcessData (uint8_t * buf, size_t len);
private:
@ -109,9 +121,10 @@ namespace transport
void SendSessionRequest (uint64_t token = 0);
void SendSessionCreated (const uint8_t * X);
void SendSessionConfirmed (const uint8_t * Y);
void KDFDataPhase (uint8_t * keydata_ab, uint8_t * keydata_ba);
void SendTokenRequest ();
void SendRetry ();
void HandlePayload (const uint8_t * buf, size_t len);
bool ExtractEndpoint (const uint8_t * buf, size_t size, boost::asio::ip::udp::endpoint& ep);
size_t CreateAddressBlock (const boost::asio::ip::udp::endpoint& ep, uint8_t * buf, size_t len);
@ -126,6 +139,8 @@ namespace transport
std::shared_ptr<const i2p::data::RouterInfo::Address> m_Address;
boost::asio::ip::udp::endpoint m_RemoteEndpoint;
uint64_t m_DestConnID, m_SourceConnID;
SSU2SessionState m_State;
uint8_t m_KeyDataSend[64], m_KeyDataReceive[64];
};
class SSU2Server: private i2p::util::RunnableServiceWithWork