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correct encryption and path for follow on lookup request

Browse Source
pull/2010/head
orignal 4 months ago
parent d724948d03
commit d8f6c4a93d
3 changed files with 83 additions and 77 deletions
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42
libi2pd/NetDb.cpp
Unescape Escape View File

@ -721,7 +721,7 @@ namespace data
void NetDb::RequestDestination (const IdentHash& destination, RequestedDestination::RequestComplete requestComplete, bool direct)
{
auto dest = m_Requests.CreateRequest (destination, false, requestComplete); // non-exploratory
auto dest = m_Requests.CreateRequest (destination, false, direct, requestComplete); // non-exploratory
if (!dest)
{
LogPrint (eLogWarning, "NetDb: Destination ", destination.ToBase64(), " is requested already");
@ -761,10 +761,10 @@ namespace data
}
}
void NetDb::RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploritory, RequestedDestination::RequestComplete requestComplete)
void NetDb::RequestDestinationFrom (const IdentHash& destination, const IdentHash & from, bool exploratory, RequestedDestination::RequestComplete requestComplete)
{
auto dest = m_Requests.CreateRequest (destination, exploritory, requestComplete); // non-exploratory
auto dest = m_Requests.CreateRequest (destination, exploratory, true, requestComplete); // non-exploratory
if (!dest)
{
LogPrint (eLogWarning, "NetDb: Destination ", destination.ToBase64(), " is requested already");
@ -919,39 +919,9 @@ namespace data
auto dest = m_Requests.FindRequest (ident);
if (dest)
{
bool deleteDest = true;
if (num > 0)
{
auto pool = i2p::tunnel::tunnels.GetExploratoryPool ();
auto outbound = pool ? pool->GetNextOutboundTunnel () : nullptr;
auto inbound = pool ? pool->GetNextInboundTunnel () : nullptr;
if (!dest->IsExploratory ())
{
// reply to our destination. Try other floodfills
if (outbound && inbound)
{
auto count = dest->GetExcludedPeers ().size ();
if (count < 7)
{
auto nextFloodfill = GetClosestFloodfill (dest->GetDestination (), dest->GetExcludedPeers ());
if (nextFloodfill)
{
// request destination
LogPrint (eLogDebug, "NetDb: Try ", key, " at ", count, " floodfill ", nextFloodfill->GetIdentHash ().ToBase64 ());
outbound->SendTunnelDataMsgTo (nextFloodfill->GetIdentHash (), 0,
dest->CreateRequestMessage (nextFloodfill, inbound));
deleteDest = false;
}
}
else
LogPrint (eLogWarning, "NetDb: ", key, " was not found on ", count, " floodfills");
}
}
if (deleteDest)
// no more requests for the destinationation. delete it
m_Requests.RequestComplete (ident, nullptr);
}
// try to send next requests
m_Requests.SendNextRequest (dest);
else
// no more requests for destination possible. delete it
m_Requests.RequestComplete (ident, nullptr);
@ -1156,7 +1126,7 @@ namespace data
for (int i = 0; i < numDestinations; i++)
{
RAND_bytes (randomHash, 32);
auto dest = m_Requests.CreateRequest (randomHash, true); // exploratory
auto dest = m_Requests.CreateRequest (randomHash, true, !throughTunnels); // exploratory
if (!dest)
{
LogPrint (eLogWarning, "NetDb: Exploratory destination is requested already");

94
libi2pd/NetDbRequests.cpp
Unescape Escape View File

@ -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;
}
}
}

24
libi2pd/NetDbRequests.h
Unescape Escape View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2020, The PurpleI2P Project
* Copyright (c) 2013-2024, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -9,9 +9,10 @@
#ifndef NETDB_REQUESTS_H__
#define NETDB_REQUESTS_H__
#include <inttypes.h>
#include <memory>
#include <set>
#include <map>
#include <unordered_map>
#include "Identity.h"
#include "RouterInfo.h"
@ -19,14 +20,18 @@ namespace i2p
{
namespace data
{
const size_t MAX_NUM_REQUEST_ATTEMPTS = 7;
const uint64_t MIN_REQUEST_TIME = 5; // in seconds
const uint64_t MAX_REQUEST_TIME = 60; // in seconds
class RequestedDestination
{
public:
typedef std::function<void (std::shared_ptr<RouterInfo>)> RequestComplete;
RequestedDestination (const IdentHash& destination, bool isExploratory = false):
m_Destination (destination), m_IsExploratory (isExploratory), m_CreationTime (0) {};
RequestedDestination (const IdentHash& destination, bool isExploratory = false, bool direct = true):
m_Destination (destination), m_IsExploratory (isExploratory), m_IsDirect (direct), m_CreationTime (0) {};
~RequestedDestination () { if (m_RequestComplete) m_RequestComplete (nullptr); };
const IdentHash& GetDestination () const { return m_Destination; };
@ -34,6 +39,7 @@ namespace data
const std::set<IdentHash>& GetExcludedPeers () { return m_ExcludedPeers; };
void ClearExcludedPeers ();
bool IsExploratory () const { return m_IsExploratory; };
bool IsDirect () const { return m_IsDirect; };
bool IsExcluded (const IdentHash& ident) const { return m_ExcludedPeers.count (ident); };
uint64_t GetCreationTime () const { return m_CreationTime; };
std::shared_ptr<I2NPMessage> CreateRequestMessage (std::shared_ptr<const RouterInfo>, std::shared_ptr<const i2p::tunnel::InboundTunnel> replyTunnel);
@ -47,7 +53,7 @@ namespace data
private:
IdentHash m_Destination;
bool m_IsExploratory;
bool m_IsExploratory, m_IsDirect;
std::set<IdentHash> m_ExcludedPeers;
uint64_t m_CreationTime;
RequestComplete m_RequestComplete;
@ -60,15 +66,17 @@ namespace data
void Start ();
void Stop ();
std::shared_ptr<RequestedDestination> CreateRequest (const IdentHash& destination, bool isExploratory, RequestedDestination::RequestComplete requestComplete = nullptr);
std::shared_ptr<RequestedDestination> CreateRequest (const IdentHash& destination, bool isExploratory,
bool direct = false, RequestedDestination::RequestComplete requestComplete = nullptr);
void RequestComplete (const IdentHash& ident, std::shared_ptr<RouterInfo> r);
std::shared_ptr<RequestedDestination> FindRequest (const IdentHash& ident) const;
void ManageRequests ();
bool SendNextRequest (std::shared_ptr<RequestedDestination> dest);
private:
mutable std::mutex m_RequestedDestinationsMutex;
std::map<IdentHash, std::shared_ptr<RequestedDestination> > m_RequestedDestinations;
std::unordered_map<IdentHash, std::shared_ptr<RequestedDestination> > m_RequestedDestinations;
};
}
}

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