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/*
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 ();
GMH_shutdown ();
GMC_shutdown ();
GMT_shutdown ();
GMD_shutdown ();
GMP_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 */
GMH_init (c); /* Hellos */
GMC_init (c); /* Connections */
GMP_init (c); /* Peers */
GMD_init (c); /* DHT */
GMT_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 ret;
int r;
shutting_down = GNUNET_NO;
r = GNUNET_SERVICE_run (argc, argv, "cadet", GNUNET_SERVICE_OPTION_NONE, &run,
NULL);
GNUNET_free (my_private_key);
ret = (GNUNET_OK == r) ? 0 : 1;
return ret;
}
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