lokinet/include/llarp/service/protocol.hpp

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#ifndef LLARP_SERVICE_PROTOCOL_HPP
#define LLARP_SERVICE_PROTOCOL_HPP
#include <llarp/time.h>
#include <llarp/bencode.hpp>
#include <llarp/crypto.hpp>
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#include <llarp/encrypted.hpp>
#include <llarp/routing/message.hpp>
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#include <llarp/service/Info.hpp>
#include <llarp/service/Intro.hpp>
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#include <vector>
namespace llarp
{
namespace service
{
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constexpr std::size_t MAX_PROTOCOL_MESSAGE_SIZE = 2048;
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enum ProtocolType
{
eProtocolText = 0,
eProtocolTraffic = 1
};
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/// inner message
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struct ProtocolMessage : public llarp::IBEncodeMessage
{
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ProtocolMessage();
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~ProtocolMessage();
ProtocolType proto;
llarp_time_t queued = 0;
std::vector< byte_t > payload;
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Introduction introReply;
ServiceInfo sender;
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bool
DecodeKey(llarp_buffer_t key, llarp_buffer_t* val);
bool
BEncode(llarp_buffer_t* buf) const;
void
PutBuffer(llarp_buffer_t payload);
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};
/// outer message
struct ProtocolFrame : public llarp::routing::IMessage
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{
llarp::Encrypted D;
llarp::PubKey H;
llarp::KeyExchangeNonce N;
llarp::Signature Z;
~ProtocolFrame();
bool
EncryptAndSign(llarp_crypto* c, const ProtocolMessage* msg,
byte_t* sharedkey, byte_t* signingkey);
bool
DecryptPayloadInto(llarp_crypto* c, byte_t* sharedkey,
ProtocolMessage* into) const;
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bool
DecodeKey(llarp_buffer_t key, llarp_buffer_t* val);
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bool
BEncode(llarp_buffer_t* buf) const;
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bool
Verify(llarp_crypto* c, byte_t* signingkey);
bool
HandleMessage(llarp::routing::IMessageHandler* h, llarp_router* r) const;
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};
} // namespace service
} // namespace llarp
#endif