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drop incoming session from too old or from future routers

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orignal 2023-07-17 21:08:26 -04:00
parent 902899ae24
commit 0754255c1f
2 changed files with 20 additions and 2 deletions
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11
libi2pd/NTCP2.cpp
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@ -695,12 +695,19 @@ namespace transport
SendTerminationAndTerminate (eNTCP2RouterInfoSignatureVerificationFail);
return;
}
if (i2p::util::GetMillisecondsSinceEpoch () > ri.GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
auto ts = i2p::util::GetMillisecondsSinceEpoch ();
if (ts > ri.GetTimestamp () + i2p::data::NETDB_MIN_EXPIRATION_TIMEOUT*1000LL) // 90 minutes
{
LogPrint (eLogError, "NTCP2: RouterInfo is too old in SessionConfirmed");
LogPrint (eLogError, "NTCP2: RouterInfo is too old in SessionConfirmed for ", (ts - ri.GetTimestamp ())/1000LL, " seconds");
SendTerminationAndTerminate (eNTCP2Message3Error);
return;
}
if (ts + i2p::data::NETDB_EXPIRATION_TIMEOUT_THRESHOLD*1000LL < ri.GetTimestamp ()) // 2 minutes
{
LogPrint (eLogError, "NTCP2: RouterInfo is from future for ", (ri.GetTimestamp () - ts)/1000LL, " seconds");
SendTerminationAndTerminate (eNTCP2Message3Error);
return;
}
auto addr = m_RemoteEndpoint.address ().is_v4 () ? ri.GetNTCP2V4Address () :
(i2p::util::net::IsYggdrasilAddress (m_RemoteEndpoint.address ()) ? ri.GetYggdrasilAddress () : ri.GetNTCP2V6Address ());
if (!addr || memcmp (m_Establisher->m_RemoteStaticKey, addr->s, 32))