aboutsummaryrefslogtreecommitdiff
path: root/src/nat/gnunet-nat.c
blob: fcd61a13660c2b44171117f91f5173c86631cc84 (plain) (blame)
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
175
176
177
178
179
180
/*
     This file is part of GNUnet.
     Copyright (C) 2015 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.
*/

/**
 * @file src/nat/gnunet-nat.c
 * @brief Daemon to auto configure nat
 * @author Christian Grothoff
 * @author Bruno Cabral
 */
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_nat_lib.h"
#include "gnunet_protocols.h"
#include "nat.h"


struct GNUNET_CONFIGURATION_Handle *cfg;



/**
 * Function to iterate over sugested changes options
 *
 * @param cls closure
 * @param section name of the section
 * @param option name of the option
 * @param value value of the option
 */
static void
auto_conf_iter (void *cls,
                const char *section,
                const char *option,
                const char *value)
{

  PRINTF ( "%s: %s \n", option, value);
}



/**
 * Function called with the result from the autoconfiguration.
 *
 * @param cls closure
 * @param diff minimal suggested changes to the original configuration
 *             to make it work (as best as we can)
 * @param result #GNUNET_NAT_ERROR_SUCCESS on success, otherwise the specific error code
 * @param type what the situation of the NAT
 */

void
auto_config_cb(void *cls,
               const struct GNUNET_CONFIGURATION_Handle *diff,
               enum GNUNET_NAT_StatusCode result, enum GNUNET_NAT_Type type)
{
  char* nat_type;
  char unknown_type[64];

  switch (type)
  {
    case GNUNET_NAT_TYPE_NO_NAT:
      nat_type = "NO NAT";
      break;
    case GNUNET_NAT_TYPE_UNREACHABLE_NAT:
      nat_type = "NAT but we can traverse";
      break;
    case GNUNET_NAT_TYPE_STUN_PUNCHED_NAT:
      nat_type = "NAT but STUN is able to identify the correct information";
      break;
    case GNUNET_NAT_TYPE_UPNP_NAT:
      nat_type = "NAT but UPNP opened the ports";
      break;
    default:
      SPRINTF (unknown_type, "NAT unknown, type %u", type);
      nat_type = unknown_type;
  }

  PRINTF ("NAT status: %s \n", nat_type );
  PRINTF ("SUGGESTED CHANGES: \n" );

  GNUNET_CONFIGURATION_iterate_section_values (diff,
                                               "nat",
                                               &auto_conf_iter,
                                               NULL);

  //TODO: Save config

}





/**
 * Main function that will be run.
 *
 * @param cls closure
 * @param args remaining command-line arguments
 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
 * @param c configuration
 */
static void
run (void *cls, char *const *args, const char *cfgfile,
     const struct GNUNET_CONFIGURATION_Handle *c)
{
  GNUNET_NAT_autoconfig_start (c, auto_config_cb, NULL);
}


/**
 * Main function of gnunet-nat
 *
 * @param argc number of command-line arguments
 * @param argv command line
 * @return 0 on success, -1 on error
 */
int
main (int argc, char *const argv[])
{
  static const struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };

  int ret = 0;
  if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
    return 2;

  /* Lets start resolver */
  char *fn;
  struct GNUNET_OS_Process *proc;

  fn = GNUNET_OS_get_libexec_binary_path ("gnunet-service-resolver");
  proc = GNUNET_OS_start_process (GNUNET_YES,
                                  GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
                                  NULL, NULL, NULL,
                                  fn,
                                  "gnunet-service-resolver");
  GNUNET_assert (NULL != proc);

  if (GNUNET_OK !=
      GNUNET_PROGRAM_run (argc, argv, "gnunet-nat [options]",
                          _("GNUnet NAT traversal autoconfigure daemon"), options,
                          &run, NULL))
  {
      ret = 1;
  }

  /* Now kill the resolver */
  if (0 != GNUNET_OS_process_kill (proc, GNUNET_TERM_SIG))
  {
      GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
  }
  GNUNET_OS_process_wait (proc);
  GNUNET_OS_process_destroy (proc);
  proc = NULL;


  GNUNET_free ((void*) argv);
  return ret;
}


/* end of gnunet-nat-server.c */