Mirrors/i2pd
2
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-04-28 11:47:48 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

token expiration threshold

Browse source
This commit is contained in:
orignal 2022-06-19 08:52:47 -04:00
parent dd602a27b5
commit 5bb20cb039
3 changed files with 15 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

16
libi2pd/SSU2Session.cpp
View file

@ -424,9 +424,10 @@ namespace transport
memset (headerX + 8, 0, 8); // token = 0
memcpy (headerX + 16, m_EphemeralKeys->GetPublicKey (), 32); // Y
// payload
auto ts = i2p::util::GetSecondsSinceEpoch ();
payload[0] = eSSU2BlkDateTime;
htobe16buf (payload + 1, 4);
htobe32buf (payload + 3, i2p::util::GetSecondsSinceEpoch ());
htobe32buf (payload + 3, ts);
size_t payloadSize = 7;
payloadSize += CreateAddressBlock (payload + payloadSize, 80 - payloadSize, m_RemoteEndpoint);
if (m_RelayTag)
@ -437,11 +438,14 @@ namespace transport
payloadSize += 7;
}
auto token = m_Server.NewIncomingToken (m_RemoteEndpoint);
payload[payloadSize] = eSSU2BlkNewToken;
htobe16buf (payload + payloadSize + 1, 12);
htobe32buf (payload + payloadSize + 3, token.second); // expires
memcpy (payload + payloadSize + 7, &token.first, 8); // token
payloadSize += 15;
if (ts + SSU2_TOKEN_EXPIRATION_THRESHOLD > token.second) // not expired?
{
payload[payloadSize] = eSSU2BlkNewToken;
htobe16buf (payload + payloadSize + 1, 12);
htobe32buf (payload + payloadSize + 3, token.second - SSU2_TOKEN_EXPIRATION_THRESHOLD); // expires
memcpy (payload + payloadSize + 7, &token.first, 8); // token
payloadSize += 15;
}
payloadSize += CreatePaddingBlock (payload + payloadSize, 80 - payloadSize);
// KDF for SessionCreated
m_NoiseState->MixHash ( { {header.buf, 16}, {headerX, 16} } ); // h = SHA256(h || header)