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check if msg 5 was received instead state

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orignal 2024-09-23 15:34:14 -04:00
parent 2dfc9003a7
commit 189d7179c0
2 changed files with 18 additions and 16 deletions
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28
libi2pd/SSU2Session.cpp
View File

@ -2341,14 +2341,18 @@ namespace transport
if (addr)
{
session->m_Address = addr;
auto& state = session->m_State;
if (state == eSSU2SessionStatePeerTestReceived || state == eSSU2SessionStateVoidPeerTestReceived)
if (session->GetMsgNumReceived () >= 5)
{
// msg 5 already received. send msg 6
if (state == eSSU2SessionStatePeerTestReceived)
SetRouterStatus (eRouterStatusOK);
state = eSSU2SessionStatePeerTest;
session->SendPeerTest (6, buf + offset, len - offset, addr->i);
// msg 5 already received
if (session->GetMsgNumReceived () == 5)
{
if (!session->IsConnectedRecently ())
SetRouterStatus (eRouterStatusOK);
// send msg 6
session->SendPeerTest (6, buf + offset, len - offset, addr->i);
}
else
LogPrint (eLogWarning, "SSU2: PeerTest 4 received, but msg ", session->GetMsgNumReceived (), " already received");
}
else
{
@ -3088,7 +3092,8 @@ namespace transport
}
SSU2PeerTestSession::SSU2PeerTestSession (SSU2Server& server, uint64_t sourceConnID, uint64_t destConnID):
SSU2Session (server, nullptr, nullptr, false), m_MsgNumReceived (0)
SSU2Session (server, nullptr, nullptr, false),
m_MsgNumReceived (0), m_IsConnectedRecently (false)
{
if (!sourceConnID) sourceConnID = ~destConnID;
if (!destConnID) destConnID = ~sourceConnID;
@ -3151,17 +3156,14 @@ namespace transport
{
if (htobe64 (((uint64_t)nonce << 32) | nonce) == GetSourceConnID ())
{
bool isConnectedRecently = GetServer ().IsConnectedRecently (GetRemoteEndpoint ());
m_IsConnectedRecently = GetServer ().IsConnectedRecently (GetRemoteEndpoint ());
auto addr = GetAddress ();
if (addr)
{
if (!isConnectedRecently)
if (!m_IsConnectedRecently)
SetRouterStatus (eRouterStatusOK);
SendPeerTest (6, buf + offset, len - offset, addr->i);
}
else
// we received msg 5 before msg 4
SetState (isConnectedRecently ? eSSU2SessionStateVoidPeerTestReceived : eSSU2SessionStatePeerTestReceived);
}
else
LogPrint (eLogWarning, "SSU2: Peer test 5 nonce mismatch ", nonce, " connID=", GetSourceConnID ());

4
libi2pd/SSU2Session.h
View File

@ -113,8 +113,6 @@ namespace transport
eSSU2SessionStateFailed,
eSSU2SessionStateIntroduced,
eSSU2SessionStatePeerTest,
eSSU2SessionStatePeerTestReceived, // 5 before 4
eSSU2SessionStateVoidPeerTestReceived, // 5 before 4, but from connected recently
eSSU2SessionStateTokenRequestReceived
};
@ -398,6 +396,7 @@ namespace transport
SSU2PeerTestSession (SSU2Server& server, uint64_t sourceConnID, uint64_t destConnID);
uint8_t GetMsgNumReceived () const { return m_MsgNumReceived; }
bool IsConnectedRecently () const { return m_IsConnectedRecently; }
bool ProcessPeerTest (uint8_t * buf, size_t len) override;
private:
@ -407,6 +406,7 @@ namespace transport
private:
uint8_t m_MsgNumReceived;
bool m_IsConnectedRecently;
};
inline uint64_t CreateHeaderMask (const uint8_t * kh, const uint8_t * nonce)