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@ -15,41 +15,56 @@ namespace datagram
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DatagramDestination::DatagramDestination (i2p::client::ClientDestination& owner):
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m_Owner (owner)
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{
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auto identityLen = m_Owner.GetIdentity ().ToBuffer (m_OutgoingBuffer, MAX_DATAGRAM_SIZE);
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m_Signature = m_OutgoingBuffer + identityLen;
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auto signatureLen = m_Owner.GetIdentity ().GetSignatureLen ();
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m_Payload = m_Signature + signatureLen;
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m_HeaderLen = identityLen + signatureLen;
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}
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void DatagramDestination::SendDatagramTo (const uint8_t * payload, size_t len, const i2p::data::LeaseSet& remote)
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{
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uint8_t buf[MAX_DATAGRAM_SIZE];
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auto identityLen = m_Owner.GetIdentity ().ToBuffer (buf, MAX_DATAGRAM_SIZE);
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uint8_t * signature = buf + identityLen;
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auto signatureLen = m_Owner.GetIdentity ().GetSignatureLen ();
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uint8_t * buf1 = signature + signatureLen;
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size_t headerLen = identityLen + signatureLen;
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memcpy (buf1, payload, len);
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if (m_Owner.GetIdentity ().GetSigningKeyType () == i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)
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{
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uint8_t hash[32];
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CryptoPP::SHA256().CalculateDigest (hash, buf1, len);
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m_Owner.Sign (hash, 32, signature);
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}
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else
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m_Owner.Sign (buf1, len, signature);
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auto service = m_Owner.GetService ();
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if (service)
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service->post (boost::bind (&DatagramDestination::SendMsg, this,
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CreateDataMessage (buf, len + headerLen), remote));
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else
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LogPrint ("Failed to send datagram. Destination is not running");
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}
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void DatagramDestination::SendMsg (I2NPMessage * msg, const i2p::data::LeaseSet& remote)
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{
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auto leases = remote.GetNonExpiredLeases ();
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if (!leases.empty ())
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{
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memcpy (m_Payload, payload, len);
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if (m_Owner.GetIdentity ().GetSigningKeyType () == i2p::data::SIGNING_KEY_TYPE_DSA_SHA1)
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{
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uint8_t hash[32];
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CryptoPP::SHA256().CalculateDigest (hash, m_Payload, len);
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m_Owner.Sign (hash, 32, m_Signature);
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}
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else
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m_Owner.Sign (m_Payload, len, m_Signature);
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std::vector<i2p::tunnel::TunnelMessageBlock> msgs;
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uint32_t i = i2p::context.GetRandomNumberGenerator ().GenerateWord32 (0, leases.size () - 1);
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auto msg = m_Owner.WrapMessage (remote, CreateDataMessage (m_OutgoingBuffer, len + m_HeaderLen), true);
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auto garlic = m_Owner.WrapMessage (remote, msg, true);
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msgs.push_back (i2p::tunnel::TunnelMessageBlock
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{
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i2p::tunnel::eDeliveryTypeTunnel,
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leases[i].tunnelGateway, leases[i].tunnelID,
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msg
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garlic
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});
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m_Owner.SendTunnelDataMsgs (msgs);
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}
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else
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LogPrint ("Failed to send datagram. All leases expired");
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{
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LogPrint ("Failed to send datagram. All leases expired");
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DeleteI2NPMessage (msg);
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}
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}
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void DatagramDestination::HandleDataMessagePayload (const uint8_t * buf, size_t len)
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