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mikhail4021 2014-02-23 21:54:36 +04:00
parent 885dc6603f
commit 2deb4118bc
31 changed files with 783 additions and 212 deletions
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31
SSU.h
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@ -3,6 +3,7 @@
#include <inttypes.h>
#include <map>
#include <list>
#include <boost/asio.hpp>
#include <cryptopp/modes.h>
#include <cryptopp/aes.h>
@ -54,6 +55,8 @@ namespace ssu
eSessionStateCreatedReceived,
eSessionStateConfirmedSent,
eSessionStateConfirmedReceived,
eSessionRelayRequestSent,
eSessionRelayRequestReceived,
eSessionStateEstablished
};
@ -62,11 +65,12 @@ namespace ssu
{
public:
SSUSession (SSUServer * server, const boost::asio::ip::udp::endpoint& remoteEndpoint,
i2p::data::RouterInfo * router = nullptr);
SSUSession (SSUServer * server, boost::asio::ip::udp::endpoint& remoteEndpoint,
const i2p::data::RouterInfo * router = nullptr);
void ProcessNextMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
void Connect ();
void ConnectThroughIntroducer (const i2p::data::RouterInfo::Introducer& introducer);
void Close ();
boost::asio::ip::udp::endpoint& GetRemoteEndpoint () { return m_RemoteEndpoint; };
void SendI2NPMessage (I2NPMessage * msg);
@ -78,29 +82,35 @@ namespace ssu
void ProcessMessage (uint8_t * buf, size_t len); // call for established session
void ProcessSessionRequest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
void SendSessionRequest ();
void SendRelayRequest (const i2p::data::RouterInfo::Introducer& introducer);
void ProcessSessionCreated (uint8_t * buf, size_t len);
void SendSessionCreated (const uint8_t * x);
void ProcessSessionConfirmed (uint8_t * buf, size_t len);
void SendSessionConfirmed (const uint8_t * y, const uint8_t * ourAddress, uint32_t relayTag);
void ProcessRelayResponse (uint8_t * buf, size_t len);
void Established ();
void ProcessData (uint8_t * buf, size_t len);
void SendMsgAck (uint32_t msgID);
void SendSesionDestroyed ();
void Send (i2p::I2NPMessage * msg);
bool ProcessIntroKeyEncryptedMessage (uint8_t expectedPayloadType, i2p::data::RouterInfo& r, uint8_t * buf, size_t len);
void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, uint8_t * aesKey, uint8_t * iv, uint8_t * macKey);
void Decrypt (uint8_t * buf, size_t len, uint8_t * aesKey);
bool Validate (uint8_t * buf, size_t len, uint8_t * macKey);
bool ProcessIntroKeyEncryptedMessage (uint8_t expectedPayloadType, uint8_t * buf, size_t len);
void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey);
void Decrypt (uint8_t * buf, size_t len, const uint8_t * aesKey);
bool Validate (uint8_t * buf, size_t len, const uint8_t * macKey);
const uint8_t * GetIntroKey () const;
private:
SSUServer * m_Server;
boost::asio::ip::udp::endpoint m_RemoteEndpoint;
i2p::data::RouterInfo * m_RemoteRouter;
const i2p::data::RouterInfo * m_RemoteRouter;
SessionState m_State;
CryptoPP::CBC_Mode<CryptoPP::AES>::Encryption m_Encryption;
CryptoPP::CBC_Mode<CryptoPP::AES>::Decryption m_Decryption;
uint8_t m_SessionKey[32], m_MacKey[32];
std::map<uint32_t, I2NPMessage *> m_IncomleteMessages;
std::list<i2p::I2NPMessage *> m_DelayedMessages;
};
class SSUServer
@ -111,12 +121,13 @@ namespace ssu
~SSUServer ();
void Start ();
void Stop ();
SSUSession * GetSession (i2p::data::RouterInfo * router);
SSUSession * GetSession (const i2p::data::RouterInfo * router);
void DeleteSession (SSUSession * session);
void DeleteAllSessions ();
void DeleteAllSessions ();
const boost::asio::ip::udp::endpoint& GetEndpoint () const { return m_Endpoint; };
void Send (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& to);
void ReassignSession (const boost::asio::ip::udp::endpoint& oldEndpoint, const boost::asio::ip::udp::endpoint& newEndpoint);
private: