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

implement DatabaseLookupTagSet

Browse source
This commit is contained in:
orignal 2020-09-15 19:39:18 -04:00
parent d0d71c93af
commit 2b0d1a2190
3 changed files with 70 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

50
libi2pd/ECIESX25519AEADRatchetSession.cpp
View file

@ -99,6 +99,56 @@ namespace garlic
m_ExpirationTimestamp = i2p::util::GetSecondsSinceEpoch () + ECIESX25519_PREVIOUS_TAGSET_EXPIRATION_TIMEOUT;
}
bool RatchetTagSet::HandleNextMessage (uint8_t * buf, size_t len, int index)
{
auto session = GetSession ();
if (!session) return false;
return session->HandleNextMessage (buf, len, shared_from_this (), index);
}
DatabaseLookupTagSet::DatabaseLookupTagSet (GarlicDestination * destination, const uint8_t * key):
RatchetTagSet (nullptr), m_Destination (destination)
{
memcpy (m_Key, key, 32);
Expire ();
}
bool DatabaseLookupTagSet::HandleNextMessage (uint8_t * buf, size_t len, int index)
{
if (len < 24) return false;
uint8_t nonce[12];
memset (nonce, 0, 12); // n = 0
size_t offset = 8; // first 8 bytes is reply tag used as AD
len -= 16; // poly1305
if (!i2p::crypto::AEADChaCha20Poly1305 (buf + offset, len - offset, buf, 8, m_Key, nonce, buf + offset, len - offset, false)) // decrypt
{
LogPrint (eLogWarning, "Garlic: Lookup reply AEAD decryption failed");
return false;
}
// we assume 1 I2NP block with delivery type local
if (offset + 3 > len)
{
LogPrint (eLogWarning, "Garlic: Lookup reply is too short ", len);
return false;
}
if (buf[offset] != eECIESx25519BlkGalicClove)
{
LogPrint (eLogWarning, "Garlic: Lookup reply unexpected block ", (int)buf[offset]);
return false;
}
offset++;
auto size = bufbe16toh (buf + offset);
offset += 2;
if (offset + size > len)
{
LogPrint (eLogWarning, "Garlic: Lookup reply block is too long ", size);
return false;
}
if (m_Destination)
m_Destination->HandleECIESx25519GarlicClove (buf + offset, size);
return true;
}
ECIESX25519AEADRatchetSession::ECIESX25519AEADRatchetSession (GarlicDestination * owner, bool attachLeaseSet):
GarlicRoutingSession (owner, attachLeaseSet)
{