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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 Affero General Public License as published
- by the Free Software Foundation, either version 3 of the License,
- 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
- Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- SPDX-License-Identifier: AGPL3.0-or-later
- */
- /**
- * 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)
- {
- 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 @a 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);
- GNUNET_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 %s\n",
- GNUNET_STRINGS_relative_time_to_string (TIMEOUT,
- GNUNET_YES));
- GNUNET_PROGRAM_run (3,
- argv_prog,
- "test-nat",
- "nohelp",
- options,
- &run, NULL);
- return 0;
- }
- /* end of test_nat.c */
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