mirror of https://github.com/PurpleI2P/i2pd.git
I2P: End-to-End encrypted and anonymous Internet
https://i2pd.website/
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
2.1 KiB
86 lines
2.1 KiB
#include "I2PEndian.h" |
|
#include <cryptopp/dsa.h> |
|
#include "CryptoConst.h" |
|
#include "Log.h" |
|
#include "Timestamp.h" |
|
#include "NetDb.h" |
|
#include "LeaseSet.h" |
|
|
|
namespace i2p |
|
{ |
|
namespace data |
|
{ |
|
|
|
LeaseSet::LeaseSet (const uint8_t * buf, int len) |
|
{ |
|
#pragma pack(1) |
|
struct H |
|
{ |
|
Identity destination; |
|
uint8_t encryptionKey[256]; |
|
uint8_t signingKey[128]; |
|
uint8_t num; |
|
}; |
|
#pragma pack () |
|
|
|
const H * header = (const H *)buf; |
|
m_Identity = header->destination; |
|
m_IdentHash = CalculateIdentHash (m_Identity); |
|
memcpy (m_EncryptionKey, header->encryptionKey, 256); |
|
LogPrint ("LeaseSet num=", (int)header->num); |
|
|
|
// process leases |
|
const uint8_t * leases = buf + sizeof (H); |
|
for (int i = 0; i < header->num; i++) |
|
{ |
|
Lease lease = *(Lease *)leases; |
|
lease.tunnelID = be32toh (lease.tunnelID); |
|
lease.endDate = be64toh (lease.endDate); |
|
m_Leases.push_back (lease); |
|
leases += sizeof (Lease); |
|
|
|
// check if lease's gateway is in our netDb |
|
if (!netdb.FindRouter (lease.tunnelGateway)) |
|
{ |
|
// if not found request it |
|
LogPrint ("Lease's tunnel gateway not found. Requested"); |
|
netdb.RequestDestination (lease.tunnelGateway); |
|
} |
|
} |
|
|
|
// verify |
|
CryptoPP::DSA::PublicKey pubKey; |
|
pubKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag, |
|
CryptoPP::Integer (m_Identity.signingKey, 128)); |
|
CryptoPP::DSA::Verifier verifier (pubKey); |
|
if (!verifier.VerifyMessage (buf, leases - buf, leases, 40)) |
|
LogPrint ("LeaseSet verification failed"); |
|
} |
|
|
|
std::vector<Lease> LeaseSet::GetNonExpiredLeases () const |
|
{ |
|
auto ts = i2p::util::GetMillisecondsSinceEpoch (); |
|
std::vector<Lease> leases; |
|
for (auto& it: m_Leases) |
|
if (ts < it.endDate) |
|
leases.push_back (it); |
|
return leases; |
|
} |
|
|
|
bool LeaseSet::HasExpiredLeases () const |
|
{ |
|
auto ts = i2p::util::GetMillisecondsSinceEpoch (); |
|
for (auto& it: m_Leases) |
|
if (ts >= it.endDate) return true; |
|
return false; |
|
} |
|
|
|
bool LeaseSet::HasNonExpiredLeases () const |
|
{ |
|
auto ts = i2p::util::GetMillisecondsSinceEpoch (); |
|
for (auto& it: m_Leases) |
|
if (ts < it.endDate) return true; |
|
return false; |
|
} |
|
} |
|
}
|
|
|