socks5.h

//
//  socks5.h
//
//  Created by 吴怡生 on 12/03/2018.
//  Copyright © 2018 yeshen.org. All rights reserved.
//

#ifndef SOCKS5_H
#define SOCKS5_H
#include <inttypes.h>
#include "common.h"

#define ACCEPT_VERSION  '\x05'
#define NO_AUTHON       '\x00'
#define AUTHON          '\x02'

enum SectionStatus{
    SS_INIT = 0,
    SS_REQUEST = 1,
    SS_REDY = 2,
    SS_CLOSE = 3
};

struct UDPPair{
    int in_fd;
    int out_fd;
    UDPPair *next;
};

struct Section{
    int fd;
    bool tcp;
    SectionStatus status;
    int watch_fd;
    UDPPair *udp;
    struct LinkBuff* insidebuff;
    struct LinkBuff* outsidebuff;
};

struct RequestVersion{
    uint8_t VER;
    uint8_t NMETHODS;
    uint8_t METHODS;
};

struct ReplytVersion{
    uint8_t VER;
    uint8_t METHOD;
};

struct Request{
    uint8_t VER;
    uint8_t CMD;
    uint8_t RSV;
    uint8_t ATYP;
    char* DST_ADDR;
    uint16_t DST_PORT;
};

struct Replies{
    uint8_t VER;
    uint8_t REP;
    uint8_t RSV;
    uint8_t ATYP;
    char* BND_ADDR;
    uint16_t BND_PORT;
};

namespace Socks5{
    bool decodeRequestVersion(struct RequestVersion* version,struct LinkBuff* buf);
    bool decodeRequest(struct Request* version,struct LinkBuff* buf);
    uint8_t* createReplytVersion();
    uint8_t* createReplies(uint8_t rep);
};

#endif