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create SSU2 session for peer test msgs 5-7

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orignal 2022-06-02 20:12:25 -04:00
parent a04abd304a
commit 0cf9478cd4
2 changed files with 15 additions and 6 deletions
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19
libi2pd/SSU2.cpp
View File

@ -109,8 +109,19 @@ namespace transport
void SSU2Session::SendPeerTest ()
{
// we are Alice
uint32_t nonce;
RAND_bytes ((uint8_t *)&nonce, 4);
auto ts = i2p::util::GetSecondsSinceEpoch ();
// session for message 5
auto session = std::make_shared<SSU2Session> (m_Server);
session->SetState (eSSU2SessionStatePeerTest);
m_PeerTests.emplace (nonce, std::make_pair (session, ts));
session->m_SourceConnID = htobe64 (((uint64_t)nonce << 32) | nonce);
session->m_DestConnID = ~session->m_SourceConnID;
m_Server.AddSession (session);
// peer test block
uint8_t payload[SSU2_MAX_PAYLOAD_SIZE];
size_t payloadSize = CreatePeerTestBlock (payload, SSU2_MAX_PAYLOAD_SIZE);
size_t payloadSize = CreatePeerTestBlock (payload, SSU2_MAX_PAYLOAD_SIZE, nonce);
payloadSize += CreatePaddingBlock (payload + payloadSize, SSU2_MAX_PAYLOAD_SIZE - payloadSize);
SendData (payload, payloadSize);
}
@ -1316,7 +1327,7 @@ namespace transport
auto it = m_PeerTests.find (nonce);
if (it != m_PeerTests.end ())
{
// TODO: send to Charlie
// TODO: update Charlie's session RouterInfo
m_PeerTests.erase (it);
}
break;
@ -1593,13 +1604,11 @@ namespace transport
return payloadSize + 3;
}
size_t SSU2Session::CreatePeerTestBlock (uint8_t * buf, size_t len)
size_t SSU2Session::CreatePeerTestBlock (uint8_t * buf, size_t len, uint32_t nonce)
{
auto localAddress = FindLocalAddress ();
if (!localAddress) return 0;
// signed data
uint32_t nonce;
RAND_bytes ((uint8_t *)&nonce, 4);
auto ts = i2p::util::GetSecondsSinceEpoch ();
uint8_t signedData[96];
signedData[0] = 2; // ver

2
libi2pd/SSU2.h
View File

@ -219,7 +219,7 @@ namespace transport
size_t CreateRelayIntroBlock (uint8_t * buf, size_t len, const uint8_t * introData, size_t introDataLen);
size_t CreateRelayResponseBlock (uint8_t * buf, size_t len, uint32_t nonce); // Charlie
size_t CreatePeerTestBlock (uint8_t * buf, size_t len, uint8_t msg, const uint8_t * routerHash, const uint8_t * signedData, size_t signedDataLen);
size_t CreatePeerTestBlock (uint8_t * buf, size_t len); // Alice
size_t CreatePeerTestBlock (uint8_t * buf, size_t len, uint32_t nonce); // Alice
private: