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fill phony record for inbound tunnel with x25519 public key

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orignal 2025-05-25 14:49:58 -04:00
parent 4c6be3b85a
commit 606881898b
4 changed files with 110 additions and 26 deletions
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68
libi2pd/TunnelConfig.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2021, The PurpleI2P Project
* Copyright (c) 2013-2025, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -219,6 +219,42 @@ namespace tunnel
return tag;
}
void LongPhonyTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID)
{
uint8_t * record = records + recordIndex*TUNNEL_BUILD_RECORD_SIZE;
memcpy (record + BUILD_REQUEST_RECORD_TO_PEER_OFFSET, (const uint8_t *)i2p::context.GetIdentHash (), 16);
memcpy (record + BUILD_REQUEST_RECORD_ENCRYPTED_OFFSET, i2p::transport::transports.GetNextX25519KeysPair ()->GetPublicKey (), 32);
RAND_bytes (record + 48, TUNNEL_BUILD_RECORD_SIZE - 48);
}
void ShortPhonyTunnelHopConfig::CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID)
{
uint8_t * record = records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE;
memcpy (record + BUILD_REQUEST_RECORD_TO_PEER_OFFSET, (const uint8_t *)i2p::context.GetIdentHash (), 16);
memcpy (record + SHORT_REQUEST_RECORD_ENCRYPTED_OFFSET, i2p::transport::transports.GetNextX25519KeysPair ()->GetPublicKey (), 32);
RAND_bytes (record + 48, SHORT_TUNNEL_BUILD_RECORD_SIZE - 48);
}
TunnelConfig::TunnelConfig (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers,
bool isShort, i2p::data::RouterInfo::CompatibleTransports farEndTransports):
m_IsShort (isShort), m_FarEndTransports (farEndTransports)
{
// inbound
CreatePeers (peers);
m_LastHop->SetNextIdent (i2p::context.GetIdentHash ());
}
TunnelConfig::TunnelConfig (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers,
uint32_t replyTunnelID, const i2p::data::IdentHash& replyIdent, bool isShort,
i2p::data::RouterInfo::CompatibleTransports farEndTransports):
m_IsShort (isShort), m_FarEndTransports (farEndTransports)
{
// outbound
CreatePeers (peers);
m_FirstHop->isGateway = false;
m_LastHop->SetReplyHop (replyTunnelID, replyIdent);
}
void TunnelConfig::CreatePeers (const std::vector<std::shared_ptr<const i2p::data::IdentityEx> >& peers)
{
TunnelHopConfig * prev = nullptr;
@ -245,5 +281,35 @@ namespace tunnel
}
m_LastHop = prev;
}
void TunnelConfig::CreatePhonyHop ()
{
if (m_LastHop && m_LastHop->ident)
{
TunnelHopConfig * hop = nullptr;
if (m_IsShort)
hop = new ShortPhonyTunnelHopConfig ();
else
hop = new LongPhonyTunnelHopConfig ();
if (hop)
{
hop->prev = m_LastHop;
m_LastHop->next = hop;
m_LastHop = hop;
}
}
}
void TunnelConfig::DeletePhonyHop ()
{
if (m_LastHop && !m_LastHop->ident)
{
if (m_LastHop->prev) m_LastHop->prev->next = nullptr;
else m_FirstHop = nullptr;
auto tmp = m_LastHop;
m_LastHop = m_LastHop->prev;
delete tmp;
}
}
}
}