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correct encryption and path for follow on lookup request

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orignal 2024-01-14 17:16:31 -05:00
parent d724948d03
commit d8f6c4a93d
3 changed files with 83 additions and 77 deletions
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94
libi2pd/NetDbRequests.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2023, The PurpleI2P Project
* Copyright (c) 2013-2024, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -11,6 +11,7 @@
#include "Transports.h"
#include "NetDb.hpp"
#include "NetDbRequests.h"
#include "ECIESX25519AEADRatchetSession.h"
namespace i2p
{
@ -74,14 +75,15 @@ namespace data
}
std::shared_ptr<RequestedDestination> NetDbRequests::CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete)
std::shared_ptr<RequestedDestination> NetDbRequests::CreateRequest (const IdentHash& destination,
bool isExploratory, bool direct, RequestedDestination::RequestComplete requestComplete)
{
// request RouterInfo directly
auto dest = std::make_shared<RequestedDestination> (destination, isExploratory);
auto dest = std::make_shared<RequestedDestination> (destination, isExploratory, direct);
dest->SetRequestComplete (requestComplete);
{
std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
if (!m_RequestedDestinations.insert (std::make_pair (destination, dest)).second) // not inserted
std::unique_lock<std::mutex> l(m_RequestedDestinationsMutex);
if (!m_RequestedDestinations.emplace (destination, dest).second) // not inserted
return nullptr;
}
return dest;
@ -125,35 +127,10 @@ namespace data
{
auto& dest = it->second;
bool done = false;
if (ts < dest->GetCreationTime () + 60) // request is worthless after 1 minute
if (ts < dest->GetCreationTime () + MAX_REQUEST_TIME) // request becomes worthless
{
if (ts > dest->GetCreationTime () + 5) // no response for 5 seconds
{
auto count = dest->GetExcludedPeers ().size ();
if (!dest->IsExploratory () && count < 7)
{
auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
auto outbound = pool->GetNextOutboundTunnel ();
auto inbound = pool->GetNextInboundTunnel ();
auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
if (nextFloodfill && outbound && inbound)
outbound->SendTunnelDataMsgTo (nextFloodfill->GetIdentHash (), 0,
dest->CreateRequestMessage (nextFloodfill, inbound));
else
{
done = true;
if (!inbound) LogPrint (eLogWarning, "NetDbReq: No inbound tunnels");
if (!outbound) LogPrint (eLogWarning, "NetDbReq: No outbound tunnels");
if (!nextFloodfill) LogPrint (eLogWarning, "NetDbReq: No more floodfills");
}
}
else
{
if (!dest->IsExploratory ())
LogPrint (eLogWarning, "NetDbReq: ", dest->GetDestination ().ToBase64 (), " not found after 7 attempts");
done = true;
}
}
if (ts > dest->GetCreationTime () + MIN_REQUEST_TIME) // retry in no response after min interval
done = !SendNextRequest (dest);
}
else // delete obsolete request
done = true;
@ -164,5 +141,56 @@ namespace data
++it;
}
}
bool NetDbRequests::SendNextRequest (std::shared_ptr<RequestedDestination> dest)
{
if (!dest) return false;
bool ret = true;
auto count = dest->GetExcludedPeers ().size ();
if (!dest->IsExploratory () && count < MAX_NUM_REQUEST_ATTEMPTS)
{
auto nextFloodfill = netdb.GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
if (nextFloodfill)
{
bool direct = dest->IsDirect ();
if (direct && !nextFloodfill->IsReachableFrom (i2p::context.GetRouterInfo ()) &&
!i2p::transport::transports.IsConnected (nextFloodfill->GetIdentHash ()))
direct = false; // floodfill can't be reached directly
if (direct)
i2p::transport::transports.SendMessage (nextFloodfill->GetIdentHash (), dest->CreateRequestMessage (nextFloodfill->GetIdentHash ()));
else
{
auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
auto outbound = pool->GetNextOutboundTunnel ();
auto inbound = pool->GetNextInboundTunnel ();
if (nextFloodfill && outbound && inbound)
{
LogPrint (eLogDebug, "NetDbReq: Try ", dest->GetDestination (), " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 ());
auto msg = dest->CreateRequestMessage (nextFloodfill, inbound);
outbound->SendTunnelDataMsgTo (nextFloodfill->GetIdentHash (), 0,
i2p::garlic::WrapECIESX25519MessageForRouter (msg, nextFloodfill->GetIdentity ()->GetEncryptionPublicKey ()));
}
else
{
ret = false;
if (!inbound) LogPrint (eLogWarning, "NetDbReq: No inbound tunnels");
if (!outbound) LogPrint (eLogWarning, "NetDbReq: No outbound tunnels");
}
}
}
else
{
ret = false;
if (!nextFloodfill) LogPrint (eLogWarning, "NetDbReq: No more floodfills");
}
}
else
{
if (!dest->IsExploratory ())
LogPrint (eLogWarning, "NetDbReq: ", dest->GetDestination ().ToBase64 (), " not found after 7 attempts");
ret = false;
}
return ret;
}
}
}