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- /*
- This file is part of GNUnet.
- (C) 2012 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 dht/gnunet-dht-monitor.c
- * @brief search for data in DHT
- * @author Christian Grothoff
- * @author Bartlomiej Polot
- */
- #include "platform.h"
- #include "gnunet_dht_service.h"
- /**
- * The type of the query
- */
- static unsigned int block_type;
- /**
- * The key to be monitored
- */
- static char *query_key;
- /**
- * User supplied timeout value (in seconds)
- */
- static struct GNUNET_TIME_Relative timeout_request = { 60000 };
- /**
- * Be verbose
- */
- static int verbose;
- /**
- * Handle to the DHT
- */
- static struct GNUNET_DHT_Handle *dht_handle;
- /**
- * Global handle of the configuration
- */
- static const struct GNUNET_CONFIGURATION_Handle *cfg;
- /**
- * Handle for the get request
- */
- static struct GNUNET_DHT_MonitorHandle *monitor_handle;
- /**
- * Count of messages received
- */
- static unsigned int result_count;
- /**
- * Global status value
- */
- static int ret;
- /**
- * Stop monitoring request and start shutdown
- *
- * @param cls closure (unused)
- * @param tc Task Context
- */
- static void
- cleanup_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
- {
- if (verbose)
- FPRINTF (stderr, "%s", "Cleaning up!\n");
- if (NULL != monitor_handle)
- {
- GNUNET_DHT_monitor_stop (monitor_handle);
- monitor_handle = NULL;
- }
- if (NULL != dht_handle)
- {
- GNUNET_DHT_disconnect (dht_handle);
- dht_handle = NULL;
- }
- }
- /**
- * Callback called on each GET request going through the DHT.
- *
- * @param cls Closure.
- * @param options Options, for instance RecordRoute, DemultiplexEverywhere.
- * @param type The type of data in the request.
- * @param hop_count Hop count so far.
- * @param path_length number of entries in path (or 0 if not recorded).
- * @param path peers on the GET path (or NULL if not recorded).
- * @param desired_replication_level Desired replication level.
- * @param key Key of the requested data.
- */
- void
- get_callback (void *cls,
- enum GNUNET_DHT_RouteOption options,
- enum GNUNET_BLOCK_Type type,
- uint32_t hop_count,
- uint32_t desired_replication_level,
- unsigned int path_length,
- const struct GNUNET_PeerIdentity *path,
- const struct GNUNET_HashCode * key)
- {
- FPRINTF (stdout, "GET #%u: type %d, key `%s'\n",
- result_count,
- (int) type,
- GNUNET_h2s_full(key));
- result_count++;
- }
- /**
- * Callback called on each GET reply going through the DHT.
- *
- * @param cls Closure.
- * @param type The type of data in the result.
- * @param get_path Peers on GET path (or NULL if not recorded).
- * @param get_path_length number of entries in get_path.
- * @param put_path peers on the PUT path (or NULL if not recorded).
- * @param put_path_length number of entries in get_path.
- * @param exp Expiration time of the data.
- * @param key Key of the data.
- * @param data Pointer to the result data.
- * @param size Number of bytes in data.
- */
- void
- get_resp_callback (void *cls,
- enum GNUNET_BLOCK_Type type,
- const struct GNUNET_PeerIdentity *get_path,
- unsigned int get_path_length,
- const struct GNUNET_PeerIdentity *put_path,
- unsigned int put_path_length,
- struct GNUNET_TIME_Absolute exp,
- const struct GNUNET_HashCode * key,
- const void *data,
- size_t size)
- {
- FPRINTF (stdout,
- "RESPONSE #%u: type %d, key `%s', data `%.*s'\n",
- result_count,
- (int) type,
- GNUNET_h2s_full (key),
- (unsigned int) size,
- (char *) data);
- result_count++;
- }
- /**
- * Callback called on each PUT request going through the DHT.
- *
- * @param cls Closure.
- * @param options Options, for instance RecordRoute, DemultiplexEverywhere.
- * @param type The type of data in the request.
- * @param hop_count Hop count so far.
- * @param path_length number of entries in path (or 0 if not recorded).
- * @param path peers on the PUT path (or NULL if not recorded).
- * @param desired_replication_level Desired replication level.
- * @param exp Expiration time of the data.
- * @param key Key under which data is to be stored.
- * @param data Pointer to the data carried.
- * @param size Number of bytes in data.
- */
- void
- put_callback (void *cls,
- enum GNUNET_DHT_RouteOption options,
- enum GNUNET_BLOCK_Type type,
- uint32_t hop_count,
- uint32_t desired_replication_level,
- unsigned int path_length,
- const struct GNUNET_PeerIdentity *path,
- struct GNUNET_TIME_Absolute exp,
- const struct GNUNET_HashCode * key,
- const void *data,
- size_t size)
- {
- FPRINTF (stdout,
- "PUT %u: type %d, key `%s', data `%.*s'\n",
- result_count,
- (int) type,
- GNUNET_h2s_full(key),
- (unsigned int) size,
- (char *) data);
- result_count++;
- }
- /**
- * 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 c configuration
- */
- static void
- run (void *cls, char *const *args, const char *cfgfile,
- const struct GNUNET_CONFIGURATION_Handle *c)
- {
- struct GNUNET_HashCode *key;
- struct GNUNET_HashCode hc;
- cfg = c;
- if (NULL == (dht_handle = GNUNET_DHT_connect (cfg, 1)))
- {
- FPRINTF (stderr, "%s",
- _("Failed to connect to DHT service!\n"));
- ret = 1;
- return;
- }
- if (GNUNET_BLOCK_TYPE_ANY == block_type) /* Type of data not set */
- block_type = GNUNET_BLOCK_TYPE_TEST;
- if (NULL != query_key)
- {
- key = &hc;
- if (GNUNET_OK !=
- GNUNET_CRYPTO_hash_from_string (query_key, key))
- GNUNET_CRYPTO_hash (query_key, strlen (query_key), key);
- }
- else
- {
- key = NULL;
- }
- if (verbose)
- FPRINTF (stderr,
- "Monitoring for %s\n",
- GNUNET_STRINGS_relative_time_to_string (timeout_request, GNUNET_NO));
- GNUNET_SCHEDULER_add_delayed (timeout_request, &cleanup_task, NULL);
- monitor_handle = GNUNET_DHT_monitor_start (dht_handle,
- block_type,
- key,
- &get_callback,
- &get_resp_callback,
- &put_callback,
- NULL);
- }
- /**
- * gnunet-dht-monitor command line options
- */
- static struct GNUNET_GETOPT_CommandLineOption options[] = {
- {'k', "key", "KEY",
- gettext_noop ("the query key"),
- 1, &GNUNET_GETOPT_set_string, &query_key},
- {'t', "type", "TYPE",
- gettext_noop ("the type of data to look for"),
- 1, &GNUNET_GETOPT_set_uint, &block_type},
- {'T', "timeout", "TIMEOUT",
- gettext_noop ("how long should the monitor command run"),
- 1, &GNUNET_GETOPT_set_relative_time, &timeout_request},
- {'V', "verbose", NULL,
- gettext_noop ("be verbose (print progress information)"),
- 0, &GNUNET_GETOPT_set_one, &verbose},
- GNUNET_GETOPT_OPTION_END
- };
- /**
- * Entry point for gnunet-dht-monitor
- *
- * @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)
- {
- if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc, argv, &argc, &argv))
- return 2;
- return (GNUNET_OK ==
- GNUNET_PROGRAM_run (argc, argv, "gnunet-dht-monitor",
- gettext_noop
- ("Prints all packets that go through the DHT."),
- options, &run, NULL)) ? ret : 1;
- }
- /* end of gnunet-dht-monitor.c */
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