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initial LeaseSet2 support in I2CP

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orignal 2019-01-29 11:30:31 -05:00
parent a3344c4290
commit 08ddc98303
4 changed files with 53 additions and 2 deletions
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40
libi2pd_client/I2CP.cpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2016, The PurpleI2P Project
* Copyright (c) 2013-2019, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -68,6 +68,13 @@ namespace client
SetLeaseSet (ls);
}
void I2CPDestination::LeaseSet2Created (uint8_t storeType, const uint8_t * buf, size_t len)
{
auto ls = new i2p::data::LocalLeaseSet2 (storeType, m_Identity, buf, len);
ls->SetExpirationTime (m_LeaseSetExpirationTime);
SetLeaseSet (ls);
}
void I2CPDestination::SendMsgTo (const uint8_t * payload, size_t len, const i2p::data::IdentHash& ident, uint32_t nonce)
{
auto msg = NewI2NPMessage ();
@ -512,6 +519,36 @@ namespace client
LogPrint (eLogError, "I2CP: unexpected sessionID ", sessionID);
}
void I2CPSession::CreateLeaseSet2MessageHandler (const uint8_t * buf, size_t len)
{
uint16_t sessionID = bufbe16toh (buf);
if (sessionID == m_SessionID)
{
size_t offset = 2;
if (m_Destination)
{
uint8_t storeType = buf[offset]; offset++; // store type
// TODO: parse LS2 and obtain correct private keys lengths
size_t signingPrivateKeyLength = 0, encryptionPrivateKeyLength = 0;
if (storeType != i2p::data::NETDB_STORE_TYPE_META_LEASESET2) // no private keys for meta
{
signingPrivateKeyLength = m_Destination->GetIdentity ()->GetSigningPrivateKeyLen (); // no offline keys
encryptionPrivateKeyLength = 256; // ElGamal only
if (len < offset + signingPrivateKeyLength + encryptionPrivateKeyLength)
{
LogPrint (eLogError, "I2CP: CreateLeaseSet2 message is too short ", len);
return;
}
m_Destination->SetEncryptionPrivateKey (buf + len - encryptionPrivateKeyLength);
// ignore signing private key
}
m_Destination->LeaseSet2Created (storeType, buf + offset, len - offset - signingPrivateKeyLength - encryptionPrivateKeyLength);
}
}
else
LogPrint (eLogError, "I2CP: unexpected sessionID ", sessionID);
}
void I2CPSession::SendMessageMessageHandler (const uint8_t * buf, size_t len)
{
uint16_t sessionID = bufbe16toh (buf);
@ -704,6 +741,7 @@ namespace client
m_MessagesHandlers[I2CP_DESTROY_SESSION_MESSAGE] = &I2CPSession::DestroySessionMessageHandler;
m_MessagesHandlers[I2CP_RECONFIGURE_SESSION_MESSAGE] = &I2CPSession::ReconfigureSessionMessageHandler;
m_MessagesHandlers[I2CP_CREATE_LEASESET_MESSAGE] = &I2CPSession::CreateLeaseSetMessageHandler;
m_MessagesHandlers[I2CP_CREATE_LEASESET2_MESSAGE] = &I2CPSession::CreateLeaseSet2MessageHandler;
m_MessagesHandlers[I2CP_SEND_MESSAGE_MESSAGE] = &I2CPSession::SendMessageMessageHandler;
m_MessagesHandlers[I2CP_SEND_MESSAGE_EXPIRES_MESSAGE] = &I2CPSession::SendMessageExpiresMessageHandler;
m_MessagesHandlers[I2CP_HOST_LOOKUP_MESSAGE] = &I2CPSession::HostLookupMessageHandler;

5
libi2pd_client/I2CP.h
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 2013-2016, The PurpleI2P Project
* Copyright (c) 2013-2019, The PurpleI2P Project
*
* This file is part of Purple i2pd project and licensed under BSD3
*
@ -36,6 +36,7 @@ namespace client
const uint8_t I2CP_DESTROY_SESSION_MESSAGE = 3;
const uint8_t I2CP_REQUEST_VARIABLE_LEASESET_MESSAGE = 37;
const uint8_t I2CP_CREATE_LEASESET_MESSAGE = 4;
const uint8_t I2CP_CREATE_LEASESET2_MESSAGE = 40;
const uint8_t I2CP_SEND_MESSAGE_MESSAGE = 5;
const uint8_t I2CP_SEND_MESSAGE_EXPIRES_MESSAGE = 36;
const uint8_t I2CP_MESSAGE_PAYLOAD_MESSAGE = 31;
@ -68,6 +69,7 @@ namespace client
void SetEncryptionPrivateKey (const uint8_t * key);
void LeaseSetCreated (const uint8_t * buf, size_t len); // called from I2CPSession
void LeaseSet2Created (uint8_t storeType, const uint8_t * buf, size_t len); // called from I2CPSession
void SendMsgTo (const uint8_t * payload, size_t len, const i2p::data::IdentHash& ident, uint32_t nonce); // called from I2CPSession
// implements LocalDestination
@ -126,6 +128,7 @@ namespace client
void DestroySessionMessageHandler (const uint8_t * buf, size_t len);
void ReconfigureSessionMessageHandler (const uint8_t * buf, size_t len);
void CreateLeaseSetMessageHandler (const uint8_t * buf, size_t len);
void CreateLeaseSet2MessageHandler (const uint8_t * buf, size_t len);
void SendMessageMessageHandler (const uint8_t * buf, size_t len);
void SendMessageExpiresMessageHandler (const uint8_t * buf, size_t len);
void HostLookupMessageHandler (const uint8_t * buf, size_t len);