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/*
This file is part of GNUnet.
Copyright (C) 2009, 2011 GNUnet e.V.
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 3, or (at your
option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNUnet; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
/**
* Testcase for port redirection and public IP address retrieval.
* This test never fails, because there need to be a NAT box set up for that.
* So we only get IP address and open the 2086 port using any NAT traversal
* method available, wait for 30s, close ports and return.
* Have a look at the logs and use NMAP to check that it works with your box.
*
* @file nat/test_nat.c
* @brief Testcase for NAT library
* @author Milan Bouchet-Valat
* @author Christian Grothoff
*
* TODO: actually use ARM to start resolver service to make DNS work!
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_program_lib.h"
#include "gnunet_scheduler_lib.h"
#include "gnunet_nat_lib.h"
/**
* Time to wait before stopping NAT, in seconds
*/
#define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
/**
* Function called on each address that the NAT service
* believes to be valid for the transport.
*/
static void
addr_callback (void *cls, int add_remove, const struct sockaddr *addr,
socklen_t addrlen)
{
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Address changed: %s `%s' (%u bytes)\n",
add_remove == GNUNET_YES ? "added" : "removed", GNUNET_a2s (addr,
addrlen),
(unsigned int) addrlen);
}
/**
* Function that terminates the test.
*/
static void
stop (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct GNUNET_NAT_Handle *nat = cls;
GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Stopping NAT and quitting...\n");
GNUNET_NAT_unregister (nat);
}
struct addr_cls
{
struct sockaddr *addr;
socklen_t addrlen;
};
/**
* Return the address of the default interface,
* or any interface with a valid address if the default is not valid
*
* @param cls the 'struct addr_cls'
* @param name name of the interface
* @param isDefault do we think this may be our default interface
* @param addr address of the interface
* @param addrlen number of bytes in addr
* @return GNUNET_OK to continue iterating
*/
static int
process_if (void *cls, const char *name, int isDefault,
const struct sockaddr *addr, const struct sockaddr *broadcast_addr,
const struct sockaddr *netmask, socklen_t addrlen)
{
struct addr_cls *data = cls;
if (addr == NULL)
return GNUNET_OK;
GNUNET_free_non_null (data->addr);
data->addr = GNUNET_malloc (addrlen);
memcpy (data->addr, addr, addrlen);
data->addrlen = addrlen;
if (isDefault)
return GNUNET_SYSERR;
return GNUNET_OK;
}
/**
* Main function run with scheduler.
*/
static void
run (void *cls, char *const *args, const char *cfgfile,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
struct GNUNET_NAT_Handle *nat;
struct addr_cls data;
struct sockaddr *addr;
data.addr = NULL;
GNUNET_OS_network_interfaces_list (process_if, &data);
if (NULL == data.addr)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
"Could not find a valid interface address!\n");
exit (77); /* marks test as skipped */
}
addr = data.addr;
GNUNET_assert (addr->sa_family == AF_INET || addr->sa_family == AF_INET6);
if (addr->sa_family == AF_INET)
((struct sockaddr_in *) addr)->sin_port = htons (2086);
else
((struct sockaddr_in6 *) addr)->sin6_port = htons (2086);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Requesting NAT redirection from address %s...\n",
GNUNET_a2s (addr, data.addrlen));
nat = GNUNET_NAT_register (cfg, GNUNET_YES /* tcp */ ,
2086, 1, (const struct sockaddr **) &addr,
&data.addrlen, &addr_callback, NULL, NULL, NULL);
GNUNET_free (addr);
GNUNET_SCHEDULER_add_delayed (TIMEOUT, &stop, nat);
}
int
main (int argc, char *const argv[])
{
struct GNUNET_GETOPT_CommandLineOption options[] = {
GNUNET_GETOPT_OPTION_END
};
char *const argv_prog[] = {
"test-nat",
"-c",
"test_nat_data.conf",
NULL
};
GNUNET_log_setup ("test-nat",
"WARNING",
NULL);
GNUNET_log (GNUNET_ERROR_TYPE_INFO,
"Testing NAT library, timeout set to %d seconds\n", TIMEOUT);
GNUNET_PROGRAM_run (3, argv_prog, "test-nat", "nohelp", options, &run, NULL);
return 0;
}
/* end of test_nat.c */
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