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/**
@file rexmpp_socks.h
@brief SOCKS5 connection establishment.
@author defanor <defanor@uberspace.net>
@date 2020
@copyright MIT license.
*/
#ifndef REXMPP_SOCKS_H
#define REXMPP_SOCKS_H
#include <unistd.h>
#define REXMPP_SOCKS_BUF_LEN 300
enum socks_io_state {
REXMPP_SOCKS_WRITING,
REXMPP_SOCKS_READING
};
enum socks_stage {
REXMPP_SOCKS_AUTH,
REXMPP_SOCKS_CMD,
REXMPP_SOCKS_DONE
};
enum socks_err {
REXMPP_SOCKS_CONNECTED,
REXMPP_SOCKS_E_AGAIN,
REXMPP_SOCKS_E_TCP,
REXMPP_SOCKS_E_REPLY,
REXMPP_SOCKS_E_VERSION,
REXMPP_SOCKS_E_SOCKS,
REXMPP_SOCKS_E_HOST
};
struct rexmpp_socks {
int fd;
const char *host;
uint16_t port;
enum socks_stage stage;
enum socks_io_state io_state;
int socks_error;
char buf[REXMPP_SOCKS_BUF_LEN];
size_t buf_len;
size_t buf_sent;
};
typedef struct rexmpp_socks rexmpp_socks_t;
enum socks_err
rexmpp_socks_proceed (rexmpp_socks_t *s);
enum socks_err
rexmpp_socks_init (rexmpp_socks_t *s,
int fd,
const char *host,
uint16_t port);
#endif
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