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/*
This file is part of GNUnet.
(C) 2009, 2010, 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
/**
* @file core/gnunet-service-core.c
* @brief high-level P2P messaging
* @author Christian Grothoff
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet-service-core.h"
#include "gnunet-service-core_clients.h"
#include "gnunet-service-core_kx.h"
#include "gnunet-service-core_neighbours.h"
#include "gnunet-service-core_sessions.h"
#include "gnunet-service-core_typemap.h"
/**
* Our identity.
*/
struct GNUNET_PeerIdentity GSC_my_identity;
/**
* Our configuration.
*/
const struct GNUNET_CONFIGURATION_Handle *GSC_cfg;
/**
* For creating statistics.
*/
struct GNUNET_STATISTICS_Handle *GSC_stats;
/**
* Handle to the server of the core service.
*/
static struct GNUNET_SERVER_Handle *GSC_server;
/**
* Hostkey generation context
*/
static struct GNUNET_CRYPTO_RsaKeyGenerationContext *keygen;
/**
* Last task run during shutdown. Disconnects us from
* the transport.
*
* @param cls NULL, unused
* @param tc scheduler context, unused
*/
static void
shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Core service shutting down.\n");
if (NULL != keygen)
{
GNUNET_CRYPTO_rsa_key_create_stop (keygen);
keygen = NULL;
}
GSC_CLIENTS_done ();
GSC_NEIGHBOURS_done ();
GSC_SESSIONS_done ();
GSC_KX_done ();
GSC_TYPEMAP_done ();
if (NULL != GSC_stats)
{
GNUNET_STATISTICS_destroy (GSC_stats, GNUNET_NO);
GSC_stats = NULL;
}
GSC_cfg = NULL;
}
/**
* Callback for hostkey read/generation
*
* @param cls NULL
* @param pk the private key
* @param emsg error message
*/
static void
key_generation_cb (void *cls,
struct GNUNET_CRYPTO_RsaPrivateKey *pk,
const char *emsg)
{
keygen = NULL;
if (NULL == pk)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Failed to read hostkey: %s\n"),
emsg);
GNUNET_SCHEDULER_shutdown ();
return;
}
if ((GNUNET_OK != GSC_KX_init (pk)) ||
(GNUNET_OK != GSC_NEIGHBOURS_init ()))
{
GNUNET_SCHEDULER_shutdown ();
return;
}
GSC_SESSIONS_init ();
GSC_CLIENTS_init (GSC_server);
GNUNET_SERVER_resume (GSC_server);
GNUNET_log (GNUNET_ERROR_TYPE_INFO, _("Core service of `%4s' ready.\n"),
GNUNET_i2s (&GSC_my_identity));
}
/**
* Initiate core service.
*
* @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)
{
char *keyfile;
GSC_cfg = c;
GSC_server = server;
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (GSC_cfg, "GNUNETD", "HOSTKEY",
&keyfile))
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_
("Core service is lacking HOSTKEY configuration setting. Exiting.\n"));
GNUNET_SCHEDULER_shutdown ();
return;
}
GSC_stats = GNUNET_STATISTICS_create ("core", GSC_cfg);
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &shutdown_task,
NULL);
GNUNET_SERVER_suspend (server);
GSC_TYPEMAP_init ();
keygen = GNUNET_CRYPTO_rsa_key_create_start (keyfile, &key_generation_cb, NULL);
GNUNET_free (keyfile);
if (NULL == keygen)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Transport service is unable to access hostkey. Exiting.\n"));
GNUNET_SCHEDULER_shutdown ();
}
}
/**
* The main function for the transport 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)
{
return (GNUNET_OK ==
GNUNET_SERVICE_run (argc, argv, "core", GNUNET_SERVICE_OPTION_NONE,
&run, NULL)) ? 0 : 1;
}
/* end of gnunet-service-core.c */
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