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/* Copyright (c) 2010, Jacob Appelbaum, Steven J. Murdoch.
* Copyright (c) 2010, The Tor Project, Inc. */
/* See LICENSE for licensing information */
/*
* tor-fw-helper is a tool for opening firewalls with NAT-PMP and UPnP; this
* tool is designed to be called by hand or by Tor by way of a exec() at a
* later date.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <getopt.h>
#include <time.h>
#include "orconfig.h"
#include "tor-fw-helper.h"
#include "tor-fw-helper-natpmp.h"
#include "tor-fw-helper-upnp.h"
static void
usage(void)
{
fprintf(stderr, "tor-fw-helper usage:\n"
" [-h|--help]\n"
" [-T|--Test]\n"
" [-v|--verbose]\n"
" [-g|--fetch-public-ip]\n"
" -i|--internal-or-port [TCP port]\n"
" [-e|--external-or-port [TCP port]]\n"
" [-d|--internal-dir-port [TCP port]\n"
" [-p|--external-dir-port [TCP port]]]\n");
}
/* Log commandline options */
static int
test_commandline_options(int argc, char **argv)
{
int i, retval;
FILE *logfile;
time_t now;
/* Open the log file */
logfile = fopen("tor-fw-helper.log", "a");
if (NULL == logfile)
return -1;
/* Send all commandline arguments to the file */
now = time(NULL);
retval = fprintf(logfile, "START: %s\n", ctime(&now));
for (i = 0; i < argc; i++) {
retval = fprintf(logfile, "ARG: %d: %s\n", i, argv[i]);
if (retval < 0)
goto error;
retval = fprintf(stdout, "ARG: %d: %s\n", i, argv[i]);
if (retval < 0)
goto error;
}
now = time(NULL);
retval = fprintf(logfile, "END: %s\n", ctime(&now));
/* Close and clean up */
retval = fclose(logfile);
return retval;
/* If there was an error during writing */
error:
fclose(logfile);
return -1;
}
static void
tor_fw_fetch_public_ip(tor_fw_options_t *tor_fw_options,
miniupnpc_state_t *miniupnpc_state)
{
int r = 0;
r = tor_natpmp_fetch_public_ip(tor_fw_options);
if (tor_fw_options->verbose)
fprintf(stdout, "V: Attempts to fetch public ip (natpmp) resulted in: "
"%d\n", r);
if (r == 0)
tor_fw_options->public_ip_status = 1;
r = tor_upnp_fetch_public_ip(miniupnpc_state);
if (tor_fw_options->verbose)
fprintf(stdout, "V: Attempts to fetch public ip (upnp) resulted in: "
"%d\n", r);
if (r == 0)
tor_fw_options->public_ip_status = 1;
}
static void
tor_fw_add_or_port(tor_fw_options_t *tor_fw_options, miniupnpc_state_t
*miniupnpc_state)
{
int r = 0;
tor_fw_options->internal_port = tor_fw_options->private_or_port;
tor_fw_options->external_port = tor_fw_options->public_or_port;
r = tor_natpmp_add_tcp_mapping(tor_fw_options);
fprintf(stdout, "tor-fw-helper: Attempts to add ORPort mapping (natpmp)"
"resulted in: %d\n", r);
if (r == 0)
tor_fw_options->nat_pmp_status = 1;
r = tor_upnp_add_tcp_mapping(miniupnpc_state,
tor_fw_options->private_or_port,
tor_fw_options->public_or_port);
fprintf(stdout, "tor-fw-helper: Attempts to add ORPort mapping (upnp)"
"resulted in: %d\n", r);
if (r == 0)
tor_fw_options->upnp_status = 1;
}
static void
tor_fw_add_dir_port(tor_fw_options_t *tor_fw_options, miniupnpc_state_t
*miniupnpc_state)
{
int r = 0;
tor_fw_options->internal_port = tor_fw_options->private_dir_port;
tor_fw_options->external_port = tor_fw_options->public_dir_port;
r = tor_natpmp_add_tcp_mapping(tor_fw_options);
fprintf(stdout, "V: Attempts to add DirPort mapping (natpmp) resulted in: "
"%d\n", r);
r = tor_upnp_add_tcp_mapping(miniupnpc_state,
tor_fw_options->private_or_port,
tor_fw_options->public_or_port);
fprintf(stdout, "V: Attempts to add DirPort mapping (upnp) resulted in: "
"%d\n",
r);
}
int
main(int argc, char **argv)
{
int r = 0;
int c = 0;
tor_fw_options_t tor_fw_options = {0,0,0,0,0,0,0,0,0,0,0,0,0};
miniupnpc_state_t miniupnpc_state;
miniupnpc_state.init = 0;
while (1)
{
int option_index = 0;
static struct option long_options[] =
{
{"verbose", 0, 0, 'v'},
{"help", 0, 0, 'h'},
{"internal-or-port", 1, 0, 'i'},
{"external-or-port", 1, 0, 'e'},
{"internal-dir-port", 1, 0, 'd'},
{"external-dir-port", 1, 0, 'p'},
{"fetch-public-ip", 0, 0, 'g'},
{"test-commandline", 0, 0, 'T'},
{0, 0, 0, 0}
};
c = getopt_long(argc, argv, "vhi:e:d:p:gT",
long_options, &option_index);
if (c == -1)
break;
switch (c)
{
case 'v': tor_fw_options.verbose = 1; break;
case 'h': tor_fw_options.help = 1; usage(); exit(1); break;
case 'i': sscanf(optarg, "%hu", &tor_fw_options.private_or_port);
break;
case 'e': sscanf(optarg, "%hu", &tor_fw_options.public_or_port);
break;
case 'd': sscanf(optarg, "%hu", &tor_fw_options.private_dir_port);
break;
case 'p': sscanf(optarg, "%hu", &tor_fw_options.public_dir_port);
break;
case 'g': tor_fw_options.fetch_public_ip = 1; break;
case 'T': tor_fw_options.test_commandline = 1; break;
case '?': break;
default : fprintf(stderr, "Unknown option!\n"); usage(); exit(1);
}
}
if (tor_fw_options.verbose)
{
fprintf(stderr, "V: tor-fw-helper version %s\n"
"V: We were called with the following arguments:\n"
"V: verbose = %d, help = %d, pub or port = %u, "
"priv or port = %u\n"
"V: pub dir port = %u, priv dir port = %u\n"
"V: fetch_public_ip = %u\n",
tor_fw_version, tor_fw_options.verbose, tor_fw_options.help,
tor_fw_options.private_or_port, tor_fw_options.public_or_port,
tor_fw_options.private_dir_port, tor_fw_options.public_dir_port,
tor_fw_options.fetch_public_ip);
}
if (tor_fw_options.test_commandline) {
return test_commandline_options(argc, argv);
}
/* At the very least, we require an ORPort;
Given a private ORPort, we can ask for a mapping that matches the port
externally.
*/
if (!tor_fw_options.private_or_port && !tor_fw_options.fetch_public_ip)
{
fprintf(stderr, "E: We require an ORPort or fetch_public_ip"
" request!\n");
usage();
exit(1);
} else {
/* When we only have one ORPort, internal/external are
set to be the same.*/
if (!tor_fw_options.public_or_port && tor_fw_options.private_or_port)
{
if (tor_fw_options.verbose)
fprintf(stdout, "V: We're setting public_or_port = "
"private_or_port.\n");
tor_fw_options.public_or_port = tor_fw_options.private_or_port;
}
}
if (!tor_fw_options.private_dir_port)
{
if (tor_fw_options.verbose)
fprintf(stdout, "V: We have no DirPort; no hole punching for "
"DirPorts\n");
} else {
/* When we only have one DirPort, internal/external are
set to be the same.*/
if (!tor_fw_options.public_dir_port && tor_fw_options.private_dir_port)
{
if (tor_fw_options.verbose)
fprintf(stdout, "V: We're setting public_or_port = "
"private_or_port.\n");
tor_fw_options.public_dir_port = tor_fw_options.private_dir_port;
}
}
if (tor_fw_options.verbose)
{
fprintf(stdout, "V: pub or port = %u, priv or port = %u\n"
"V: pub dir port = %u, priv dir port = %u\n",
tor_fw_options.private_or_port, tor_fw_options.public_or_port,
tor_fw_options.private_dir_port,
tor_fw_options.public_dir_port);
}
if (tor_fw_options.fetch_public_ip)
{
tor_fw_fetch_public_ip(&tor_fw_options, &miniupnpc_state);
}
if (tor_fw_options.private_or_port)
{
tor_fw_add_or_port(&tor_fw_options, &miniupnpc_state);
}
if (tor_fw_options.private_dir_port)
{
tor_fw_add_dir_port(&tor_fw_options, &miniupnpc_state);
}
r = (((tor_fw_options.nat_pmp_status | tor_fw_options.upnp_status)
|tor_fw_options.public_ip_status));
if (r > 0)
{
fprintf(stdout, "tor-fw-helper: SUCCESS\n");
} else {
fprintf(stderr, "tor-fw-helper: FAILURE\n");
}
exit(r);
}
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