summaryrefslogtreecommitdiff
path: root/src/cadet/gnunet-service-cadet.c
blob: 0cbd384aec5bb3a3a5774d298bbc76ef7f1326f8 (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
175
176
177
178
179
180
181
182
183
184
185
/*
     This file is part of GNUnet.
     (C) 2001-2013 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., 59 Temple Place - Suite 330,
     Boston, MA 02111-1307, USA.
*/

/**
 * @file cadet/gnunet-service-cadet.c
 * @brief GNUnet CADET service with encryption
 * @author Bartlomiej Polot
 *
 *  FIXME in progress:
 * - rekey - reliability interaction
 * - channel retransmit timing
 *
 * TODO:
 * - relay corking down to core
 * - set ttl relative to path length
 * TODO END
 *
 * Dictionary:
 * - peer: other cadet instance. If there is direct connection it's a neighbor.
 * - tunnel: encrypted connection to a peer, neighbor or not.
 * - channel: connection between two clients, on the same or different peers.
 *            have properties like reliability.
 * - path: series of directly connected peer from one peer to another.
 * - connection: path which is being used in a tunnel.
 */

#include "platform.h"
#include "gnunet_util_lib.h"
#include "cadet.h"
#include "gnunet_statistics_service.h"

#include "gnunet-service-cadet_local.h"
#include "gnunet-service-cadet_channel.h"
#include "gnunet-service-cadet_connection.h"
#include "gnunet-service-cadet_tunnel.h"
#include "gnunet-service-cadet_dht.h"
#include "gnunet-service-cadet_peer.h"
#include "gnunet-service-cadet_hello.h"


/******************************************************************************/
/***********************      GLOBAL VARIABLES     ****************************/
/******************************************************************************/

/****************************** Global variables ******************************/

/**
 * Handle to the statistics service.
 */
struct GNUNET_STATISTICS_Handle *stats;

/**
 * Local peer own ID (memory efficient handle).
 */
GNUNET_PEER_Id myid;

/**
 * Local peer own ID (full value).
 */
struct GNUNET_PeerIdentity my_full_id;


/**
 * Signal that shutdown is happening: prevent recover measures.
 */
int shutting_down;

/*************************** Static global variables **************************/

/**
 * Own private key.
 */
static struct GNUNET_CRYPTO_EddsaPrivateKey *my_private_key;


/******************************************************************************/
/************************      MAIN FUNCTIONS      ****************************/
/******************************************************************************/

/**
 * Task run during shutdown.
 *
 * @param cls unused
 * @param tc unused
 */
static void
shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "shutting down\n");

  shutting_down = GNUNET_YES;

  GML_shutdown ();
  GCH_shutdown ();
  GCC_shutdown ();
  GCT_shutdown ();
  GCD_shutdown ();
  GCP_shutdown ();

  GNUNET_STATISTICS_destroy (stats, GNUNET_NO);
  stats = NULL;
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "shut down\n");
}


/**
 * Process cadet requests.
 *
 * @param cls closure
 * @param server the initialized server
 * @param c configuration to use
 */
static void
run (void *cls, struct GNUNET_SERVER_Handle *server,
     const struct GNUNET_CONFIGURATION_Handle *c)
{
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "starting to run\n");

  stats = GNUNET_STATISTICS_create ("cadet", c);

  /* Scheduled the task to clean up when shutdown is called */
  GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
                                NULL);
  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "reading key\n");
  my_private_key = GNUNET_CRYPTO_eddsa_key_create_from_configuration (c);
  GNUNET_assert (NULL != my_private_key);
  GNUNET_CRYPTO_eddsa_key_get_public (my_private_key, &my_full_id.public_key);
  myid = GNUNET_PEER_intern (&my_full_id);
  GNUNET_log (GNUNET_ERROR_TYPE_INFO,
              "STARTING SERVICE (cadet) for peer [%s]\n",
              GNUNET_i2s (&my_full_id));

  GML_init (server);    /* Local clients */
  GCH_init (c);         /* Hellos */
  GCC_init (c);         /* Connections */
  GCP_init (c);         /* Peers */
  GCD_init (c);         /* DHT */
  GCT_init (c, my_private_key); /* Tunnels */

  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Cadet service running\n");
}


/**
 * The main function for the cadet service.
 *
 * @param argc number of arguments from the command line
 * @param argv command line arguments
 * @return 0 ok, 1 on error
 */
int
main (int argc, char *const *argv)
{
  int r;

  shutting_down = GNUNET_NO;
  r = GNUNET_SERVICE_run (argc, argv, "cadet", GNUNET_SERVICE_OPTION_NONE, &run,
                          NULL);
  GNUNET_free (my_private_key);

  if (GNUNET_OK != r)
  {
    FPRINTF (stderr, "GNUNET_SERVICE_run for CADET has failed!\n");
    return 1;
  }

  return 0;
}