mirror of
https://github.com/PurpleI2P/i2pd.git
synced 2024-11-08 01:10:40 +00:00
252 lines
8.9 KiB
C++
252 lines
8.9 KiB
C++
/*
|
|
* Copyright (c) 2013-2023, The PurpleI2P Project
|
|
*
|
|
* This file is part of Purple i2pd project and licensed under BSD3
|
|
*
|
|
* See full license text in LICENSE file at top of project tree
|
|
*/
|
|
|
|
#ifndef I2CP_H__
|
|
#define I2CP_H__
|
|
|
|
#include <inttypes.h>
|
|
#include <string>
|
|
#include <memory>
|
|
#include <thread>
|
|
#include <map>
|
|
#include <boost/asio.hpp>
|
|
#include "util.h"
|
|
#include "Destination.h"
|
|
#include "Streaming.h"
|
|
|
|
namespace i2p
|
|
{
|
|
namespace client
|
|
{
|
|
const uint8_t I2CP_PROTOCOL_BYTE = 0x2A;
|
|
const size_t I2CP_SESSION_BUFFER_SIZE = 4096;
|
|
const size_t I2CP_MAX_MESSAGE_LENGTH = 65535;
|
|
const size_t I2CP_MAX_SEND_QUEUE_SIZE = 1024*1024; // in bytes, 1M
|
|
const int I2CP_LEASESET_CREATION_TIMEOUT = 10; // in seconds
|
|
|
|
const size_t I2CP_HEADER_LENGTH_OFFSET = 0;
|
|
const size_t I2CP_HEADER_TYPE_OFFSET = I2CP_HEADER_LENGTH_OFFSET + 4;
|
|
const size_t I2CP_HEADER_SIZE = I2CP_HEADER_TYPE_OFFSET + 1;
|
|
|
|
const uint8_t I2CP_GET_DATE_MESSAGE = 32;
|
|
const uint8_t I2CP_SET_DATE_MESSAGE = 33;
|
|
const uint8_t I2CP_CREATE_SESSION_MESSAGE = 1;
|
|
const uint8_t I2CP_RECONFIGURE_SESSION_MESSAGE = 2;
|
|
const uint8_t I2CP_SESSION_STATUS_MESSAGE = 20;
|
|
const uint8_t I2CP_DESTROY_SESSION_MESSAGE = 3;
|
|
const uint8_t I2CP_REQUEST_VARIABLE_LEASESET_MESSAGE = 37;
|
|
const uint8_t I2CP_CREATE_LEASESET_MESSAGE = 4;
|
|
const uint8_t I2CP_CREATE_LEASESET2_MESSAGE = 41;
|
|
const uint8_t I2CP_SEND_MESSAGE_MESSAGE = 5;
|
|
const uint8_t I2CP_SEND_MESSAGE_EXPIRES_MESSAGE = 36;
|
|
const uint8_t I2CP_MESSAGE_PAYLOAD_MESSAGE = 31;
|
|
const uint8_t I2CP_MESSAGE_STATUS_MESSAGE = 22;
|
|
const uint8_t I2CP_HOST_LOOKUP_MESSAGE = 38;
|
|
const uint8_t I2CP_HOST_REPLY_MESSAGE = 39;
|
|
const uint8_t I2CP_DEST_LOOKUP_MESSAGE = 34;
|
|
const uint8_t I2CP_DEST_REPLY_MESSAGE = 35;
|
|
const uint8_t I2CP_GET_BANDWIDTH_LIMITS_MESSAGE = 8;
|
|
const uint8_t I2CP_BANDWIDTH_LIMITS_MESSAGE = 23;
|
|
|
|
enum I2CPMessageStatus
|
|
{
|
|
eI2CPMessageStatusAccepted = 1,
|
|
eI2CPMessageStatusGuaranteedSuccess = 4,
|
|
eI2CPMessageStatusGuaranteedFailure = 5,
|
|
eI2CPMessageStatusNoLeaseSet = 21
|
|
};
|
|
|
|
enum I2CPSessionStatus
|
|
{
|
|
eI2CPSessionStatusDestroyed = 0,
|
|
eI2CPSessionStatusCreated = 1,
|
|
eI2CPSessionStatusUpdated = 2,
|
|
eI2CPSessionStatusInvalid = 3,
|
|
eI2CPSessionStatusRefused = 4
|
|
};
|
|
|
|
// params
|
|
const char I2CP_PARAM_MESSAGE_RELIABILITY[] = "i2cp.messageReliability";
|
|
|
|
class I2CPSession;
|
|
class I2CPDestination: public LeaseSetDestination
|
|
{
|
|
public:
|
|
|
|
I2CPDestination (boost::asio::io_service& service, std::shared_ptr<I2CPSession> owner,
|
|
std::shared_ptr<const i2p::data::IdentityEx> identity, bool isPublic, const std::map<std::string, std::string>& params);
|
|
~I2CPDestination () {};
|
|
|
|
void Stop ();
|
|
|
|
void SetEncryptionPrivateKey (const uint8_t * key);
|
|
void SetEncryptionType (i2p::data::CryptoKeyType keyType) { m_EncryptionKeyType = keyType; };
|
|
void SetECIESx25519EncryptionPrivateKey (const uint8_t * key);
|
|
void LeaseSetCreated (const uint8_t * buf, size_t len); // called from I2CPSession
|
|
void LeaseSet2Created (uint8_t storeType, const uint8_t * buf, size_t len); // called from I2CPSession
|
|
void SendMsgTo (const uint8_t * payload, size_t len, const i2p::data::IdentHash& ident, uint32_t nonce); // called from I2CPSession
|
|
|
|
// implements LocalDestination
|
|
bool Decrypt (const uint8_t * encrypted, uint8_t * data, i2p::data::CryptoKeyType preferredCrypto) const;
|
|
bool SupportsEncryptionType (i2p::data::CryptoKeyType keyType) const;
|
|
const uint8_t * GetEncryptionPublicKey (i2p::data::CryptoKeyType keyType) const; // for 4 only
|
|
std::shared_ptr<const i2p::data::IdentityEx> GetIdentity () const { return m_Identity; };
|
|
|
|
protected:
|
|
|
|
// I2CP
|
|
void HandleDataMessage (const uint8_t * buf, size_t len);
|
|
void CreateNewLeaseSet (const std::vector<std::shared_ptr<i2p::tunnel::InboundTunnel> >& tunnels);
|
|
|
|
private:
|
|
|
|
std::shared_ptr<I2CPDestination> GetSharedFromThis ()
|
|
{ return std::static_pointer_cast<I2CPDestination>(shared_from_this ()); }
|
|
bool SendMsg (std::shared_ptr<I2NPMessage> msg, std::shared_ptr<const i2p::data::LeaseSet> remote);
|
|
|
|
void PostCreateNewLeaseSet (std::vector<std::shared_ptr<i2p::tunnel::InboundTunnel> > tunnels);
|
|
|
|
private:
|
|
|
|
std::shared_ptr<I2CPSession> m_Owner;
|
|
std::shared_ptr<const i2p::data::IdentityEx> m_Identity;
|
|
i2p::data::CryptoKeyType m_EncryptionKeyType;
|
|
std::shared_ptr<i2p::crypto::CryptoKeyDecryptor> m_Decryptor; // standard
|
|
std::shared_ptr<i2p::crypto::ECIESX25519AEADRatchetDecryptor> m_ECIESx25519Decryptor;
|
|
uint8_t m_ECIESx25519PrivateKey[32];
|
|
uint64_t m_LeaseSetExpirationTime;
|
|
bool m_IsCreatingLeaseSet;
|
|
boost::asio::deadline_timer m_LeaseSetCreationTimer;
|
|
i2p::util::MemoryPoolMt<I2NPMessageBuffer<I2NP_MAX_MESSAGE_SIZE> > m_I2NPMsgsPool;
|
|
};
|
|
|
|
class RunnableI2CPDestination: private i2p::util::RunnableService, public I2CPDestination
|
|
{
|
|
public:
|
|
|
|
RunnableI2CPDestination (std::shared_ptr<I2CPSession> owner, std::shared_ptr<const i2p::data::IdentityEx> identity,
|
|
bool isPublic, const std::map<std::string, std::string>& params);
|
|
~RunnableI2CPDestination ();
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
};
|
|
|
|
class I2CPServer;
|
|
class I2CPSession: public std::enable_shared_from_this<I2CPSession>
|
|
{
|
|
public:
|
|
|
|
I2CPSession (I2CPServer& owner, std::shared_ptr<boost::asio::ip::tcp::socket> socket);
|
|
|
|
~I2CPSession ();
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
uint16_t GetSessionID () const { return m_SessionID; };
|
|
std::shared_ptr<const I2CPDestination> GetDestination () const { return m_Destination; };
|
|
|
|
// called from I2CPDestination
|
|
void SendI2CPMessage (uint8_t type, const uint8_t * payload, size_t len);
|
|
void SendMessagePayloadMessage (const uint8_t * payload, size_t len);
|
|
void SendMessageStatusMessage (uint32_t nonce, I2CPMessageStatus status);
|
|
|
|
// message handlers
|
|
void GetDateMessageHandler (const uint8_t * buf, size_t len);
|
|
void CreateSessionMessageHandler (const uint8_t * buf, size_t len);
|
|
void DestroySessionMessageHandler (const uint8_t * buf, size_t len);
|
|
void ReconfigureSessionMessageHandler (const uint8_t * buf, size_t len);
|
|
void CreateLeaseSetMessageHandler (const uint8_t * buf, size_t len);
|
|
void CreateLeaseSet2MessageHandler (const uint8_t * buf, size_t len);
|
|
void SendMessageMessageHandler (const uint8_t * buf, size_t len);
|
|
void SendMessageExpiresMessageHandler (const uint8_t * buf, size_t len);
|
|
void HostLookupMessageHandler (const uint8_t * buf, size_t len);
|
|
void DestLookupMessageHandler (const uint8_t * buf, size_t len);
|
|
void GetBandwidthLimitsMessageHandler (const uint8_t * buf, size_t len);
|
|
|
|
private:
|
|
|
|
void ReadProtocolByte ();
|
|
void ReceiveHeader ();
|
|
void HandleReceivedHeader (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void ReceivePayload ();
|
|
void HandleReceivedPayload (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
void HandleMessage ();
|
|
void Terminate ();
|
|
|
|
void HandleI2CPMessageSent (const boost::system::error_code& ecode, std::size_t bytes_transferred);
|
|
|
|
std::string ExtractString (const uint8_t * buf, size_t len);
|
|
size_t PutString (uint8_t * buf, size_t len, const std::string& str);
|
|
void ExtractMapping (const uint8_t * buf, size_t len, std::map<std::string, std::string>& mapping);
|
|
void SendSessionStatusMessage (I2CPSessionStatus status);
|
|
void SendHostReplyMessage (uint32_t requestID, std::shared_ptr<const i2p::data::IdentityEx> identity);
|
|
|
|
private:
|
|
|
|
I2CPServer& m_Owner;
|
|
std::shared_ptr<boost::asio::ip::tcp::socket> m_Socket;
|
|
uint8_t m_Header[I2CP_HEADER_SIZE], m_Payload[I2CP_MAX_MESSAGE_LENGTH];
|
|
size_t m_PayloadLen;
|
|
|
|
std::shared_ptr<I2CPDestination> m_Destination;
|
|
uint16_t m_SessionID;
|
|
uint32_t m_MessageID;
|
|
bool m_IsSendAccepted;
|
|
|
|
// to client
|
|
bool m_IsSending;
|
|
uint8_t m_SendBuffer[I2CP_MAX_MESSAGE_LENGTH];
|
|
i2p::stream::SendBufferQueue m_SendQueue;
|
|
};
|
|
typedef void (I2CPSession::*I2CPMessageHandler)(const uint8_t * buf, size_t len);
|
|
|
|
class I2CPServer: private i2p::util::RunnableService
|
|
{
|
|
public:
|
|
|
|
I2CPServer (const std::string& interface, uint16_t port, bool isSingleThread);
|
|
~I2CPServer ();
|
|
|
|
void Start ();
|
|
void Stop ();
|
|
boost::asio::io_service& GetService () { return GetIOService (); };
|
|
bool IsSingleThread () const { return m_IsSingleThread; };
|
|
|
|
bool InsertSession (std::shared_ptr<I2CPSession> session);
|
|
void RemoveSession (uint16_t sessionID);
|
|
std::shared_ptr<I2CPSession> FindSessionByIdentHash (const i2p::data::IdentHash& ident) const;
|
|
|
|
private:
|
|
|
|
void Run ();
|
|
|
|
void Accept ();
|
|
|
|
void HandleAccept(const boost::system::error_code& ecode, std::shared_ptr<boost::asio::ip::tcp::socket> socket);
|
|
|
|
private:
|
|
|
|
bool m_IsSingleThread;
|
|
I2CPMessageHandler m_MessagesHandlers[256];
|
|
std::map<uint16_t, std::shared_ptr<I2CPSession> > m_Sessions;
|
|
|
|
boost::asio::ip::tcp::acceptor m_Acceptor;
|
|
|
|
public:
|
|
|
|
const decltype(m_MessagesHandlers)& GetMessagesHandlers () const { return m_MessagesHandlers; };
|
|
|
|
// for HTTP
|
|
const decltype(m_Sessions)& GetSessions () const { return m_Sessions; };
|
|
};
|
|
}
|
|
}
|
|
|
|
#endif
|