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i2pd
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split SSU to SSU and SSUSession

pull/108/head
orignal 10 years ago
parent
51c908ab55
commit
0cd04c23c5
5 changed files with 17 additions and 1136 deletions
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  1. 1001
      SSU.cpp
  2. 124
      SSU.h
  3. 8
      Win32/i2pd.vcxproj
  4. 8
      build/autotools/Makefile.in
  5. 12
      filelist.mk

1001
SSU.cpp
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124
SSU.h
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@ -8,142 +8,20 @@ @@ -8,142 +8,20 @@
#include <set>
#include <thread>
#include <boost/asio.hpp>
#include "aes.h"
#include "I2PEndian.h"
#include "Identity.h"
#include "RouterInfo.h"
#include "I2NPProtocol.h"
#include "TransportSession.h"
#include "SSUData.h"
#include "SSUSession.h"
namespace i2p
{
namespace transport
{
#pragma pack(1)
struct SSUHeader
{
uint8_t mac[16];
uint8_t iv[16];
uint8_t flag;
uint32_t time;
uint8_t GetPayloadType () const { return flag >> 4; };
};
#pragma pack()
const int SSU_CONNECT_TIMEOUT = 5; // 5 seconds
const int SSU_TERMINATION_TIMEOUT = 330; // 5.5 minutes
const int SSU_KEEP_ALIVE_INTERVAL = 30; // 30 seconds
const int SSU_TO_INTRODUCER_SESSION_DURATION = 3600; // 1 hour
const size_t SSU_MAX_NUM_INTRODUCERS = 3;
// payload types (4 bits)
const uint8_t PAYLOAD_TYPE_SESSION_REQUEST = 0;
const uint8_t PAYLOAD_TYPE_SESSION_CREATED = 1;
const uint8_t PAYLOAD_TYPE_SESSION_CONFIRMED = 2;
const uint8_t PAYLOAD_TYPE_RELAY_REQUEST = 3;
const uint8_t PAYLOAD_TYPE_RELAY_RESPONSE = 4;
const uint8_t PAYLOAD_TYPE_RELAY_INTRO = 5;
const uint8_t PAYLOAD_TYPE_DATA = 6;
const uint8_t PAYLOAD_TYPE_PEER_TEST = 7;
const uint8_t PAYLOAD_TYPE_SESSION_DESTROYED = 8;
enum SessionState
{
eSessionStateUnknown,
eSessionStateIntroduced,
eSessionStateEstablished,
eSessionStateFailed
};
class SSUServer;
class SSUSession: public TransportSession
{
public:
SSUSession (SSUServer& server, boost::asio::ip::udp::endpoint& remoteEndpoint,
const i2p::data::RouterInfo * router = nullptr, bool peerTest = false);
void ProcessNextMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
~SSUSession ();
void Connect ();
void Introduce (uint32_t iTag, const uint8_t * iKey);
void WaitForIntroduction ();
void Close ();
boost::asio::ip::udp::endpoint& GetRemoteEndpoint () { return m_RemoteEndpoint; };
bool IsV6 () const { return m_RemoteEndpoint.address ().is_v6 (); };
void SendI2NPMessage (I2NPMessage * msg);
void SendPeerTest (); // Alice
SessionState GetState () const { return m_State; };
size_t GetNumSentBytes () const { return m_NumSentBytes; };
size_t GetNumReceivedBytes () const { return m_NumReceivedBytes; };
void SendKeepAlive ();
uint32_t GetRelayTag () const { return m_RelayTag; };
uint32_t GetCreationTime () const { return m_CreationTime; };
private:
void CreateAESandMacKey (const uint8_t * pubKey);
void PostI2NPMessage (I2NPMessage * msg);
void ProcessMessage (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint); // call for established session
void ProcessSessionRequest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
void SendSessionRequest ();
void SendRelayRequest (uint32_t iTag, const uint8_t * iKey);
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, size_t ourAddressLen);
void ProcessRelayRequest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& from);
void SendRelayResponse (uint32_t nonce, const boost::asio::ip::udp::endpoint& from,
const uint8_t * introKey, const boost::asio::ip::udp::endpoint& to);
void SendRelayIntro (SSUSession * session, const boost::asio::ip::udp::endpoint& from);
void ProcessRelayResponse (uint8_t * buf, size_t len);
void ProcessRelayIntro (uint8_t * buf, size_t len);
void Established ();
void Failed ();
void ScheduleConnectTimer ();
void HandleConnectTimer (const boost::system::error_code& ecode);
void ProcessPeerTest (uint8_t * buf, size_t len, const boost::asio::ip::udp::endpoint& senderEndpoint);
void SendPeerTest (uint32_t nonce, uint32_t address, uint16_t port, const uint8_t * introKey, bool toAddress = true);
void ProcessData (uint8_t * buf, size_t len);
void SendSesionDestroyed ();
void Send (uint8_t type, const uint8_t * payload, size_t len); // with session key
void Send (const uint8_t * buf, size_t size);
void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len, const uint8_t * aesKey, const uint8_t * iv, const uint8_t * macKey);
void FillHeaderAndEncrypt (uint8_t payloadType, uint8_t * buf, size_t len); // with session key
void Decrypt (uint8_t * buf, size_t len, const uint8_t * aesKey);
void DecryptSessionKey (uint8_t * buf, size_t len);
bool Validate (uint8_t * buf, size_t len, const uint8_t * macKey);
const uint8_t * GetIntroKey () const;
void ScheduleTermination ();
void HandleTerminationTimer (const boost::system::error_code& ecode);
private:
friend class SSUData; // TODO: change in later
SSUServer& m_Server;
boost::asio::ip::udp::endpoint m_RemoteEndpoint;
boost::asio::deadline_timer m_Timer;
bool m_PeerTest;
SessionState m_State;
bool m_IsSessionKey;
uint32_t m_RelayTag;
std::set<uint32_t> m_PeerTestNonces;
i2p::crypto::CBCEncryption m_SessionKeyEncryption;
i2p::crypto::CBCDecryption m_SessionKeyDecryption;
uint8_t m_SessionKey[32], m_MacKey[32];
std::list<i2p::I2NPMessage *> m_DelayedMessages;
SSUData m_Data;
size_t m_NumSentBytes, m_NumReceivedBytes;
uint32_t m_CreationTime; // seconds since epoch
};
class SSUServer
{
public:

8
Win32/i2pd.vcxproj
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@ -34,7 +34,9 @@ @@ -34,7 +34,9 @@
<ClCompile Include="..\SAM.cpp" />
<ClCompile Include="..\SSU.cpp" />
<ClCompile Include="..\SSUData.cpp" />
<ClCompile Include="..\SSUSession.cpp" />
<ClCompile Include="..\Streaming.cpp" />
<ClCompile Include="..\Datagram.cpp" />
<ClCompile Include="..\Destination.cpp" />
<ClCompile Include="..\TransitTunnel.cpp" />
<ClCompile Include="..\Transports.cpp" />
@ -47,7 +49,6 @@ @@ -47,7 +49,6 @@
<ClCompile Include="..\SOCKS.cpp" />
<ClCompile Include="..\I2PTunnel.cpp" />
<ClCompile Include="..\ClientContext.cpp" />
<ClCompile Include="..\Datagram.cpp" />
<ClCompile Include="Win32Service.cpp" />
</ItemGroup>
<ItemGroup>
@ -74,7 +75,9 @@ @@ -74,7 +75,9 @@
<ClInclude Include="..\SAM.h" />
<ClInclude Include="..\SSU.h" />
<ClInclude Include="..\SSUData.h" />
<ClInclude Include="..\SSUSession.h" />
<ClInclude Include="..\Streaming.h" />
<ClInclude Include="..\Datagram.h" />
<ClInclude Include="..\Destination.h" />
<ClInclude Include="..\Timestamp.h" />
<ClInclude Include="..\TransitTunnel.h" />
@ -92,8 +95,7 @@ @@ -92,8 +95,7 @@
<ClInclude Include="..\version.h" />
<ClInclude Include="..\Signature.h" />
<ClInclude Include="..\ClientContext.h" />
<ClCompile Include="..\TransportSession.h" />
<ClCompile Include="..\Datagram.h" />
<ClInclude Include="..\TransportSession.h" />
<ClInclude Include="Win32Service.h" />
</ItemGroup>
<PropertyGroup Label="Globals">

8
build/autotools/Makefile.in
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@ -114,7 +114,8 @@ am_i2p_OBJECTS = AddressBook.$(OBJEXT) CryptoConst.$(OBJEXT) \ @@ -114,7 +114,8 @@ am_i2p_OBJECTS = AddressBook.$(OBJEXT) CryptoConst.$(OBJEXT) \
Transports.$(OBJEXT) Tunnel.$(OBJEXT) TunnelEndpoint.$(OBJEXT) \
TunnelGateway.$(OBJEXT) TunnelPool.$(OBJEXT) UPnP.$(OBJEXT) \
aes.$(OBJEXT) base64.$(OBJEXT) i2p.$(OBJEXT) util.$(OBJEXT) \
SAM.$(OBJEXT) Destination.$(OBJEXT)
SAM.$(OBJEXT) Destination.$(OBJEXT) ClientContext.$(OBJEXT) \
Datagram.$(OBJEXT) SSUSession.$(OBJEXT)
i2p_OBJECTS = $(am_i2p_OBJECTS)
i2p_LDADD = $(LDADD)
AM_V_P = $(am__v_P_@AM_V@)
@ -325,7 +326,7 @@ i2p_SOURCES = AddressBook.cpp CryptoConst.cpp Daemon.cpp \ @@ -325,7 +326,7 @@ i2p_SOURCES = AddressBook.cpp CryptoConst.cpp Daemon.cpp \
Transports.cpp Tunnel.cpp TunnelEndpoint.cpp \
TunnelGateway.cpp TunnelPool.cpp UPnP.cpp aes.cpp \
base64.cpp i2p.cpp util.cpp SAM.cpp Destination.cpp \
ClientContext.cpp DataFram.cpp \
ClientContext.cpp DataFram.cpp SSUSession.cpp \
\
AddressBook.h CryptoConst.h Daemon.h ElGamal.h \
Garlic.h HTTPProxy.h HTTPServer.h I2NPProtocol.h \
@ -337,7 +338,7 @@ i2p_SOURCES = AddressBook.cpp CryptoConst.cpp Daemon.cpp \ @@ -337,7 +338,7 @@ i2p_SOURCES = AddressBook.cpp CryptoConst.cpp Daemon.cpp \
TunnelConfig.h TunnelEndpoint.h TunnelGateway.h \
TunnelPool.h UPnP.h aes.h base64.h config.h hmac.h \
util.h version.h Destination.h ClientContext.h \
TransportSession.h Datagram.h
TransportSession.h Datagram.h SSUSession.h
AM_LDFLAGS = @BOOST_DATE_TIME_LIB@ @BOOST_FILESYSTEM_LIB@ \
@BOOST_PROGRAM_OPTIONS_LIB@ @BOOST_REGEX_LIB@ \
@ -487,6 +488,7 @@ distclean-compile: @@ -487,6 +488,7 @@ distclean-compile:
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/SAM.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/ClientContext.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/Datagram.Po@am__quote@
@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/SSUSession.Po@am__quote@
.cpp.o:
@am__fastdepCXX_TRUE@ $(AM_V_CXX)$(CXXCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<

12
filelist.mk
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@ -3,17 +3,17 @@ @@ -3,17 +3,17 @@
CPP_FILES := CryptoConst.cpp base64.cpp NTCPSession.cpp RouterInfo.cpp Transports.cpp \
RouterContext.cpp NetDb.cpp LeaseSet.cpp Tunnel.cpp TunnelEndpoint.cpp TunnelGateway.cpp \
TransitTunnel.cpp I2NPProtocol.cpp Log.cpp Garlic.cpp HTTPServer.cpp Streaming.cpp \
Destination.cpp Identity.cpp SSU.cpp util.cpp Reseed.cpp DaemonLinux.cpp SSUData.cpp \
aes.cpp SOCKS.cpp UPnP.cpp TunnelPool.cpp HTTPProxy.cpp AddressBook.cpp Daemon.cpp \
I2PTunnel.cpp SAM.cpp ClientContext.cpp Datagram.cpp i2p.cpp
Destination.cpp Identity.cpp SSU.cpp SSUSession.cpp SSUData.cpp util.cpp Reseed.cpp \
DaemonLinux.cpp SSUData.cpp aes.cpp SOCKS.cpp UPnP.cpp TunnelPool.cpp HTTPProxy.cpp \
AddressBook.cpp Daemon.cpp I2PTunnel.cpp SAM.cpp ClientContext.cpp Datagram.cpp i2p.cpp
H_FILES := CryptoConst.h base64.h NTCPSession.h RouterInfo.h Transports.h \
RouterContext.h NetDb.h LeaseSet.h Tunnel.h TunnelEndpoint.h TunnelGateway.h \
TransitTunnel.h I2NPProtocol.h Log.h Garlic.h HTTPServer.h Streaming.h Destination.h \
Identity.h SSU.h util.h Reseed.h DaemonLinux.h SSUData.h i2p.h aes.h SOCKS.h \
UPnP.h TunnelPool.h HTTPProxy.h AddressBook.h Daemon.h I2PTunnel.h version.h \
Signature.h SAM.h ClientContext.h TransportSession.h Datagram.h
Identity.h SSU.h SSUSession.h SSUData.h util.h Reseed.h DaemonLinux.h SSUData.h \
aes.h SOCKS.h UPnP.h TunnelPool.h HTTPProxy.h AddressBook.h Daemon.h I2PTunnel.h \
version.h Signature.h SAM.h ClientContext.h TransportSession.h Datagram.h
OBJECTS = $(addprefix obj/, $(notdir $(CPP_FILES:.cpp=.o)))

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