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Code Issues Releases Activity

set reply code for short tunnel build messages

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This commit is contained in:
orignal 2021-07-11 19:29:16 -04:00
parent 3e281d4790
commit dbe427d5eb
3 changed files with 25 additions and 3 deletions
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22
libi2pd/I2NPProtocol.cpp
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@ -608,7 +608,24 @@ namespace i2p
LogPrint (eLogError, "I2NP: ShortTunnelBuild message of ", num, " records is too short ", len);
return;
}
// TODO: check replyMsgID
auto tunnel = i2p::tunnel::tunnels.GetPendingInboundTunnel (replyMsgID);
if (tunnel)
{
// endpoint of inbound tunnel
LogPrint (eLogDebug, "I2NP: ShortTunnelBuild reply for tunnel ", tunnel->GetTunnelID ());
if (tunnel->HandleTunnelBuildResponse (buf, len))
{
LogPrint (eLogInfo, "I2NP: Inbound tunnel ", tunnel->GetTunnelID (), " has been created");
tunnel->SetState (i2p::tunnel::eTunnelStateEstablished);
i2p::tunnel::tunnels.AddInboundTunnel (tunnel);
}
else
{
LogPrint (eLogInfo, "I2NP: Inbound tunnel ", tunnel->GetTunnelID (), " has been declined");
tunnel->SetState (i2p::tunnel::eTunnelStateBuildFailed);
}
return;
}
const uint8_t * record = buf + 1;
for (int i = 0; i < num; i++)
{
@ -688,7 +705,8 @@ namespace i2p
nonce[4] = j; // nonce is record #
if (j == i)
{
// TODO: fill reply
memset (reply + SHORT_RESPONSE_RECORD_OPTIONS_OFFSET, 0, 2); // no options
reply[SHORT_RESPONSE_RECORD_RET_OFFSET] = 0; // TODO: correct ret code
if (!i2p::crypto::AEADChaCha20Poly1305 (reply, SHORT_TUNNEL_BUILD_RECORD_SIZE - 16,
noiseState.m_H, 32, replyKey, nonce, reply, SHORT_TUNNEL_BUILD_RECORD_SIZE, true)) // encrypt
{

4
libi2pd/I2NPProtocol.h
View File

@ -115,6 +115,10 @@ namespace i2p
const size_t SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET = SHORT_REQUEST_RECORD_REQUEST_EXPIRATION_OFFSET + 4;
const size_t SHORT_REQUEST_RECORD_PADDING_OFFSET = SHORT_REQUEST_RECORD_SEND_MSG_ID_OFFSET + 4;
const size_t SHORT_REQUEST_RECORD_CLEAR_TEXT_SIZE = 154;
// ShortResponseRecord
const size_t SHORT_RESPONSE_RECORD_OPTIONS_OFFSET = 0;
const size_t SHORT_RESPONSE_RECORD_RET_OFFSET = 201;
enum I2NPMessageType
{

2
libi2pd/TunnelConfig.h
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@ -79,7 +79,7 @@ namespace tunnel
ShortECIESTunnelHopConfig (std::shared_ptr<const i2p::data::IdentityEx> r):
ECIESTunnelHopConfig (r) {};
uint8_t GetRetCode (const uint8_t * records) const
{ return (records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE)[ECIES_BUILD_RESPONSE_RECORD_RET_OFFSET]; }; // TODO
{ return (records + recordIndex*SHORT_TUNNEL_BUILD_RECORD_SIZE)[SHORT_RESPONSE_RECORD_RET_OFFSET]; };
void CreateBuildRequestRecord (uint8_t * records, uint32_t replyMsgID);
bool DecryptBuildResponseRecord (uint8_t * records) const;
void DecryptRecord (uint8_t * records, int index) const override; // Chacha20