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- /*
- This file is part of GNUnet.
- (C) 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 dv/gnunet-dv.c
- * @brief DV monitoring command line tool
- * @author Christian Grothoff
- */
- #include "platform.h"
- #include "gnunet_util_lib.h"
- #include "gnunet_dv_service.h"
- /**
- * Handle to DV service.
- */
- static struct GNUNET_DV_ServiceHandle *sh;
- /**
- * Was verbose specified?
- */
- static int verbose;
- /**
- * Function called if DV starts to be able to talk to a peer.
- *
- * @param cls closure
- * @param peer newly connected peer
- * @param distance distance to the peer
- * @param network the network the next hop is located in
- */
- static void
- connect_cb (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- uint32_t distance,
- enum GNUNET_ATS_Network_Type network)
- {
- fprintf (stderr, "Connect: %s at %u\n",
- GNUNET_i2s (peer),
- (unsigned int) distance);
- }
- /**
- * Function called if DV distance to a peer is changed.
- *
- * @param cls closure
- * @param peer connected peer
- * @param distance new distance to the peer
- * @param network network used on first hop to peer
- */
- static void
- change_cb (void *cls,
- const struct GNUNET_PeerIdentity *peer,
- uint32_t distance,
- enum GNUNET_ATS_Network_Type network)
- {
- fprintf (stderr, "Change: %s at %u\n",
- GNUNET_i2s (peer),
- (unsigned int) distance);
- }
- /**
- * Function called if DV is no longer able to talk to a peer.
- *
- * @param cls closure
- * @param peer peer that disconnected
- */
- static void
- disconnect_cb (void *cls,
- const struct GNUNET_PeerIdentity *peer)
- {
- fprintf (stderr, "Disconnect: %s\n",
- GNUNET_i2s (peer));
- }
- /**
- * Function called if DV receives a message for this peer.
- *
- * @param cls closure
- * @param sender sender of the message
- * @param distance how far did the message travel
- * @param msg actual message payload
- */
- static void
- message_cb (void *cls,
- const struct GNUNET_PeerIdentity *sender,
- uint32_t distance,
- const struct GNUNET_MessageHeader *msg)
- {
- if (verbose)
- fprintf (stderr, "Message: %s at %u sends %u bytes of type %u\n",
- GNUNET_i2s (sender),
- (unsigned int) distance,
- (unsigned int) ntohs (msg->size),
- (unsigned int) ntohs (msg->type));
- }
- /**
- * Task run on shutdown.
- *
- * @param cls NULL
- * @param tc unused
- */
- static void
- shutdown_task (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- GNUNET_DV_service_disconnect (sh);
- sh = NULL;
- }
- /**
- * Main function that will be run by the scheduler.
- *
- * @param cls closure
- * @param args remaining command-line arguments
- * @param cfgfile name of the configuration file used (for saving, can be NULL!)
- * @param cfg configuration
- */
- static void
- run (void *cls, char *const *args, const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle *cfg)
- {
- sh = GNUNET_DV_service_connect (cfg, NULL,
- &connect_cb,
- &change_cb,
- &disconnect_cb,
- &message_cb);
- GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
- &shutdown_task, NULL);
- }
- /**
- * The main function.
- *
- * @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 res;
- static const struct GNUNET_GETOPT_CommandLineOption options[] = {
- {'V', "verbose", NULL,
- gettext_noop ("verbose output"),
- 0, &GNUNET_GETOPT_set_one, &verbose},
- GNUNET_GETOPT_OPTION_END
- };
- if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
- return 2;
- res = GNUNET_PROGRAM_run (argc, argv, "gnunet-dv",
- gettext_noop ("Print information about DV state"),
- options, &run,
- NULL);
- GNUNET_free ((void *) argv);
- if (GNUNET_OK != res)
- return 1;
- return 0;
- }
- /* end of gnunet-dv.c */
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