#include "stellar/socks_decoder.h"

#define SOCKS_FIELD_VER_4 4
#define SOCKS_FIELD_VER_5 5

#define SOCKS5_REQUEST_METHOD_MIN_LEN  3
#define SOCKS5_REQUEST_MIN_LEN 6
#define SOCKS_VERSION_TYPE_SOCKS4 4
#define SOCKS_VERSION_TYPE_SOCKS5 5

#define SOCKS_CMD_CONNECT       0x01
#define SOCKS_CMD_BIND          0x02
#define SOCKS_CMD_UDP           0x03

#define SOCKS5_RSV_DEFAULT		0
#define SOCKS_ATYPE_IP4             1
#define SOCKS_ATYPE_IP6             4
#define SOCKS_ATYPE_FQDN          3

#define SOCKS5_AUTH_NONE        0x00
#define SOCKS5_AUTH_PASS        0x02

#define SOCKS_LOG_MOUDLE        "SOCKS_DECODER"

struct socks_decoder_info
{
	int plugin_id;
    int sess_exdata_idx;
	struct stellar *st;
	struct logger *log_handle;
	int socks_decoder_topic_id;
	int tcp_topic_id;
};

enum socks_establish_state
{
    SS_BEGIN = 0,
    SS_SUB,
    SS_END,
    SS_FAILED
};

enum socks_internal_state
{
    STATE_INIT,
    STATE_OPENING,
    STATE_FAILED
};

struct socks_tunnel_stream
{
    enum socks_internal_state state;
    enum socks_establish_state client_state;
    enum socks_establish_state server_state;
    struct socks_info info;
};