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/* Copyright (c) 2010, Jacob Appelbaum, Steven J. Murdoch.
* Copyright (c) 2010-2012, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/**
* \file tor-fw-helper.h
* \brief The main header for our firewall helper.
**/
#ifndef _TOR_FW_HELPER_H
#define _TOR_FW_HELPER_H
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <getopt.h>
#include <time.h>
/** The current version of tor-fw-helper. */
#define tor_fw_version "0.1"
/** This is an arbitrary hard limit - We currently have two (NAT-PMP and UPnP).
We're likely going to add the Intel UPnP library but nothing else comes to
mind at the moment. */
#define MAX_BACKENDS 23
/** Forward traffic received in port <b>external_port</b> in the
* external side of our NAT to <b>internal_port</b> in this host. */
typedef struct {
uint16_t external_port;
uint16_t internal_port;
} port_to_forward_t;
/** This is where we store parsed commandline options. */
typedef struct {
int verbose;
int help;
int test_commandline;
smartlist_t *ports_to_forward;
int fetch_public_ip;
int nat_pmp_status;
int upnp_status;
int public_ip_status;
} tor_fw_options_t;
/** This is our main structure that defines our backend helper API; each helper
* must conform to these public methods if it expects to be handled in a
* non-special way. */
typedef struct tor_fw_backend_t {
const char *name;
size_t state_len;
int (*init)(tor_fw_options_t *options, void *backend_state);
int (*cleanup)(tor_fw_options_t *options, void *backend_state);
int (*fetch_public_ip)(tor_fw_options_t *options, void *backend_state);
int (*add_tcp_mapping)(tor_fw_options_t *options, void *backend_state);
} tor_fw_backend_t;
#endif
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