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Create and send local LeaseSet

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orignal 2013-12-30 20:46:33 -05:00
parent 808d6d1fbf
commit 24ad255053
4 changed files with 137 additions and 42 deletions
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75
Streaming.cpp
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@ -1,17 +1,21 @@
#include <endian.h>
#include <string>
#include <cryptopp/gzip.h>
#include <cryptopp/dsa.h>
#include "Log.h"
#include "RouterInfo.h"
#include "RouterContext.h"
#include "Tunnel.h"
#include "Timestamp.h"
#include "CryptoConst.h"
#include "Streaming.h"
namespace i2p
{
namespace stream
{
Stream::Stream (const i2p::data::IdentHash& destination):
m_SendStreamID (0)
Stream::Stream (StreamingDestination * local, const i2p::data::IdentHash& remote):
m_SendStreamID (0), m_LocalDestination (local)
{
m_RecvStreamID = i2p::context.GetRandomNumberGenerator ().GenerateWord32 ();
}
@ -57,8 +61,16 @@ namespace stream
LogPrint ("Payload: ", str);
}
StreamingDestination m_SharedLocalDestination;
StreamingDestination * sharedLocalDestination = nullptr;
StreamingDestination::StreamingDestination ()
{
// TODO: read from file later
m_Keys = i2p::data::CreateRandomKeys ();
m_Identity = m_Keys;
m_IdentHash = i2p::data::CalculateIdentHash (m_Identity);
}
void StreamingDestination::HandleNextPacket (const uint8_t * buf, size_t len)
{
uint32_t sendStreamID = *(uint32_t *)(buf);
@ -83,11 +95,59 @@ namespace stream
return nullptr;
}
} */
Stream * s = new Stream (destination);
Stream * s = new Stream (this, destination);
m_Streams[s->GetRecvStreamID ()] = s;
return s;
}
I2NPMessage * StreamingDestination::CreateLeaseSet () const
{
I2NPMessage * m = NewI2NPMessage ();
I2NPDatabaseStoreMsg * msg = (I2NPDatabaseStoreMsg *)m->GetPayload ();
memcpy (msg->key, (const uint8_t *)m_IdentHash, 32);
msg->type = 1; // LeaseSet
msg->replyToken = 0;
uint8_t * buf = m->GetPayload () + sizeof (I2NPDatabaseStoreMsg);
size_t size = 0;
memcpy (buf + size, &m_Identity, sizeof (m_Identity));
size += sizeof (m_Identity); // destination
memcpy (buf + size, i2p::context.GetLeaseSetPublicKey (), 256);
size += 256; // encryption key
memset (buf + size, 0, 128);
size += 128; // signing key
auto tunnel = i2p::tunnel::tunnels.GetNextInboundTunnel ();
if (tunnel)
{
buf[size] = 1; // 1 lease
size++; // num
memcpy (buf + size, (const uint8_t *)tunnel->GetNextIdentHash (), 32);
size += 32; // tunnel_gw
*(uint32_t *)(buf + size) = htobe32 (tunnel->GetNextTunnelID ());
size += 4; // tunnel_id
uint64_t ts = tunnel->GetCreationTime () + i2p::tunnel::TUNNEL_EXPIRATION_TIMEOUT;
ts *= 1000; // in milliseconds
*(uint64_t *)(buf + size) = htobe64 (ts);
size += 8; // end_date
}
else
{
buf[size] = 0; // zero leases
size++; // num
}
CryptoPP::DSA::PrivateKey signingPrivateKey;
signingPrivateKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag,
CryptoPP::Integer (m_Keys.signingPrivateKey, 20));
CryptoPP::DSA::Signer signer (signingPrivateKey);
signer.SignMessage (i2p::context.GetRandomNumberGenerator (), buf, size, buf+ size);
size += 40; // signature
m->len += size + sizeof (I2NPDatabaseStoreMsg);
FillI2NPMessageHeader (m, eI2NPDatabaseStore);
return m;
}
void HandleDataMessage (i2p::data::IdentHash * destination, const uint8_t * buf, size_t len)
{
uint32_t length = be32toh (*(uint32_t *)buf);
@ -104,7 +164,8 @@ namespace stream
decompressor.Get (uncompressed, uncompressedSize);
// then forward to streaming engine
// TODO: we have onle one destination, might be more
m_SharedLocalDestination.HandleNextPacket (uncompressed, uncompressedSize);
if (sharedLocalDestination)
sharedLocalDestination->HandleNextPacket (uncompressed, uncompressedSize);
}
else
LogPrint ("Data: protocol ", buf[9], " is not supported");