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byedpi/proxy.h

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#ifndef PROXY_H
#define PROXY_H
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#include <stdint.h>
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#ifdef _WIN32
#include <ws2tcpip.h>
#else
#include <arpa/inet.h>
#include <sys/socket.h>
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#endif
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#include "conev.h"
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#define SA_SIZE(s) \
(((struct sockaddr *)s)->sa_family == AF_INET6) ? \
sizeof(struct sockaddr_in6) : sizeof(struct sockaddr_in)
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struct sockaddr_ina {
union {
struct sockaddr sa;
struct sockaddr_in in;
struct sockaddr_in6 in6;
};
};
#pragma pack(push, 1)
struct s4_req {
uint8_t ver, cmd;
uint16_t port;
struct in_addr i4;
};
struct s5_req {
uint8_t ver, cmd, zero, atp;
union {
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struct {
struct in_addr i4;
uint16_t p4;
};
struct {
struct in6_addr i6;
uint16_t p6;
};
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struct {
uint8_t len;
char domain[];
} id;
};
};
struct s5_rep {
uint8_t ver, code, zero, atp;
struct {
struct in_addr i4;
uint16_t port;
};
};
#pragma pack(pop)
enum s_auth {
S_AUTH_NONE = 0x00,
S_AUTH_GSSAPI = 0x01,
S_AUTH_USPA = 0x02,
S_AUTH_BAD = 0xff
};
enum s_atp {
S_ATP_I4 = 0x01,
S_ATP_ID = 0x03,
S_ATP_I6 = 0x04
};
enum s_cmd {
S_CMD_CONN = 0x01,
S_CMD_BIND = 0x02,
S_CMD_AUDP = 0x03
};
enum s_err {
S_ER_OK = 0x00,
S_ER_GEN = 0x01,
S_ER_DENY = 0x02,
S_ER_NET = 0x03,
S_ER_HOST = 0x04,
S_ER_CONN = 0x05,
S_ER_TTL = 0x06,
S_ER_CMD = 0x07,
S_ER_ATP = 0x08
};
enum s4_rep {
S4_OK = 0x5a,
S4_ER = 0x5b
};
#define S_VER5 0x05
#define S_VER4 0x04
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#define S_SIZE_MIN 8
#define S_SIZE_I4 10
#define S_SIZE_I6 22
#define S_SIZE_ID 7
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void map_fix(struct sockaddr_ina *addr, char f6);
int resp_error(int fd, int e, int flag);
int create_conn(struct poolhd *pool,
struct eval *val, struct sockaddr_ina *dst, int next);
int on_tunnel(struct poolhd *pool, struct eval *val,
char *buffer, size_t bfsize, int out);
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int listen_socket(struct sockaddr_ina *srv);
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int event_loop(int srvfd);
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int run(struct sockaddr_ina *srv);
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#endif