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/*
This file is part of GNUnet.
(C) 2009 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 sensordashboard/gnunet-service-sensordashboard.c
* @brief Service collecting sensor readings from peers
* @author Omar Tarabai
*/
#include "platform.h"
#include "gnunet_util_lib.h"
#include "gnunet_applications.h"
#include "sensordashboard.h"
#include "gnunet_cadet_service.h"
static struct GNUNET_CADET_Handle *cadet;
/**
* Task run during shutdown.
*
* @param cls unused
* @param tc unused
*/
static void
cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
if (NULL != cadet)
{
GNUNET_CADET_disconnect(cadet);
cadet = NULL;
}
GNUNET_SCHEDULER_shutdown();
}
/**
* Function called whenever a channel is destroyed. Should clean up
* any associated state.
*
* It must NOT call #GNUNET_CADET_channel_destroy on the channel.
*
* @param cls closure (set from #GNUNET_CADET_connect)
* @param channel connection to the other end (henceforth invalid)
* @param channel_ctx place where local state associated
* with the channel is stored
*/
static void cadet_channel_destroyed (void *cls,
const struct GNUNET_CADET_Channel *channel,
void *channel_ctx)
{
}
/**
* Method called whenever another peer has added us to a channel
* the other peer initiated.
* Only called (once) upon reception of data with a message type which was
* subscribed to in #GNUNET_CADET_connect.
*
* A call to #GNUNET_CADET_channel_destroy causes the channel to be ignored. In
* this case the handler MUST return NULL.
*
* @param cls closure
* @param channel new handle to the channel
* @param initiator peer that started the channel
* @param port Port this channel is for.
* @param options CadetOption flag field, with all active option bits set to 1.
*
* @return initial channel context for the channel
* (can be NULL -- that's not an error)
*/
static void *cadet_channel_created (void *cls,
struct GNUNET_CADET_Channel *channel,
const struct GNUNET_PeerIdentity *initiator,
uint32_t port, enum GNUNET_CADET_ChannelOption options)
{
GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
"CADET channel opened by remote peer `%s'.\n",
GNUNET_i2s(initiator));
return NULL; /* FIXME */
}
/**
* Process sensordashboard requests.
*
* @param cls closure
* @param server the initialized server
* @param cfg configuration to use
*/
static void
run (void *cls, struct GNUNET_SERVER_Handle *server,
const struct GNUNET_CONFIGURATION_Handle *cfg)
{
static const struct GNUNET_SERVER_MessageHandler handlers[] = {
{NULL, NULL, 0, 0}
};
static struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
{NULL, 0, 0}
};
static uint32_t cadet_ports[] = {
GNUNET_APPLICATION_TYPE_SENSORDASHBOARD,
GNUNET_APPLICATION_TYPE_END
};
cadet = GNUNET_CADET_connect(cfg,
NULL,
&cadet_channel_created,
&cadet_channel_destroyed,
cadet_handlers,
cadet_ports);
if(NULL == cadet)
{
GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
_("Failed to connect to CADET service.\n"));
GNUNET_SCHEDULER_add_now (&cleanup_task, NULL);
return;
}
GNUNET_SERVER_add_handlers (server, handlers);
GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL, &cleanup_task,
NULL);
}
/**
* The main function for the sensordashboard 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, "sensordashboard",
GNUNET_SERVICE_OPTION_NONE, &run, NULL)) ? 0 : 1;
}
/* end of gnunet-service-sensordashboard.c */
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