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delete expired ECIESX25519AEADRatchet sessions and tags

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orignal 2020-02-20 15:44:09 -05:00
parent 50450923df
commit 9c9b723cf5
4 changed files with 43 additions and 3 deletions
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8
libi2pd/ECIESX25519AEADRatchetSession.h
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@ -55,6 +55,10 @@ namespace garlic
eECIESx25519BlkPadding = 254
};
const int ECIESX25519_RESTART_TIMEOUT = 120; // number of second of inactivity we should restart after
const int ECIESX25519_EXPIRATION_TIMEOUT = 600; // in seconds
class ECIESX25519AEADRatchetSession: public GarlicRoutingSession, public std::enable_shared_from_this<ECIESX25519AEADRatchetSession>
{
enum SessionState
@ -81,6 +85,9 @@ namespace garlic
if (!m_Destination) m_Destination.reset (new i2p::data::IdentHash (dest));
}
bool IsExpired (uint64_t ts) const { return ts > m_LastActivityTimestamp + ECIESX25519_EXPIRATION_TIMEOUT; }
bool CanBeRestarted (uint64_t ts) const { return ts > m_LastActivityTimestamp + ECIESX25519_RESTART_TIMEOUT; }
private:
void ResetKeys ();
@ -109,6 +116,7 @@ namespace garlic
uint8_t m_Aepk[32]; // Alice's ephemeral keys TODO: for incoming only
i2p::crypto::X25519Keys m_EphemeralKeys;
SessionState m_State = eSessionStateNew;
uint64_t m_LastActivityTimestamp = 0; // incoming
RatchetTagSet m_SendTagset, m_ReceiveTagset;
int m_NumReceiveTags = 0;
std::unique_ptr<i2p::data::IdentHash> m_Destination;// TODO: might not need it