summaryrefslogtreecommitdiff
path: root/src/nat/test_nat.c
blob: d62d156a2d2b61f38f7d1ced697cd627ed6a8a90 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
/*
     This file is part of GNUnet.
     Copyright (C) 2009, 2011 Christian Grothoff (and other contributing authors)

     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 (GNUNET_SYSERR);
  }
  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);
  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 */