I2P: End-to-End encrypted and anonymous Internet https://i2pd.website/
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#ifndef TRANSPORT_SESSION_H__
#define TRANSPORT_SESSION_H__
#include <inttypes.h>
#include <iostream>
#include <memory>
#include <vector>
#include "Identity.h"
#include "RouterInfo.h"
#include "I2NPProtocol.h"
namespace i2p
{
namespace transport
{
struct DHKeysPair // transient keys for transport sessions
{
uint8_t publicKey[256];
uint8_t privateKey[256];
};
class SignedData
{
public:
SignedData () {};
void Insert (const uint8_t * buf, size_t len)
{
m_Stream.write ((char *)buf, len);
}
template<typename T>
void Insert (T t)
{
m_Stream.write ((char *)&t, sizeof (T));
}
bool Verify (const i2p::data::IdentityEx& ident, const uint8_t * signature) const
{
return ident.Verify ((const uint8_t *)m_Stream.str ().c_str (), m_Stream.str ().size (), signature);
}
void Sign (const i2p::data::PrivateKeys& keys, uint8_t * signature) const
{
keys.Sign ((const uint8_t *)m_Stream.str ().c_str (), m_Stream.str ().size (), signature);
}
private:
std::stringstream m_Stream;
};
class TransportSession
{
public:
TransportSession (std::shared_ptr<const i2p::data::RouterInfo> in_RemoteRouter):
m_RemoteRouter (in_RemoteRouter), m_DHKeysPair (nullptr),
m_NumSentBytes (0), m_NumReceivedBytes (0)
{
if (m_RemoteRouter)
m_RemoteIdentity = m_RemoteRouter->GetRouterIdentity ();
}
virtual ~TransportSession () { delete m_DHKeysPair; };
virtual void Done () = 0;
std::shared_ptr<const i2p::data::RouterInfo> GetRemoteRouter () { return m_RemoteRouter; };
const i2p::data::IdentityEx& GetRemoteIdentity () { return m_RemoteIdentity; };
size_t GetNumSentBytes () const { return m_NumSentBytes; };
size_t GetNumReceivedBytes () const { return m_NumReceivedBytes; };
virtual void SendI2NPMessage (std::shared_ptr<I2NPMessage> msg) = 0;
virtual void SendI2NPMessages (const std::vector<std::shared_ptr<I2NPMessage> >& msgs) = 0;
protected:
std::shared_ptr<const i2p::data::RouterInfo> m_RemoteRouter;
i2p::data::IdentityEx m_RemoteIdentity;
DHKeysPair * m_DHKeysPair; // X - for client and Y - for server
size_t m_NumSentBytes, m_NumReceivedBytes;
};
}
}
#endif