search for data in DHT More...

#include "platform.h"
#include "gnunet_dht_service.h"

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Functions
static void	cleanup_task (void *cls)
	Stop monitoring request and start shutdown. More...

static void	timeout_task (void *cls)
	We hit a timeout. More...

static void	get_callback (void cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, const struct GNUNET_HashCode key)
	Callback called on each GET request going through the DHT. More...

static void	get_resp_callback (void cls, enum GNUNET_BLOCK_Type type, const struct GNUNET_PeerIdentity trunc_peer, const struct GNUNET_DHT_PathElement get_path, unsigned int get_path_length, const struct GNUNET_DHT_PathElement put_path, unsigned int put_path_length, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode key, const void data, size_t size)
	Callback called on each GET reply going through the DHT. More...

static void	put_callback (void cls, enum GNUNET_DHT_RouteOption options, enum GNUNET_BLOCK_Type type, uint32_t hop_count, uint32_t desired_replication_level, const struct GNUNET_PeerIdentity trunc_peer, unsigned int path_length, const struct GNUNET_DHT_PathElement path, struct GNUNET_TIME_Absolute exp, const struct GNUNET_HashCode key, const void *data, size_t size)
	Callback called on each PUT request going through the DHT. More...

static void	run (void cls, char const args, const char cfgfile, const struct GNUNET_CONFIGURATION_Handle *c)
	Main function that will be run by the scheduler. More...

int	main (int argc, char const argv)
	Entry point for gnunet-dht-monitor. More...

Variables
static unsigned int	block_type
	The type of the query. More...

static char *	query_key
	The key to be monitored. More...

static struct GNUNET_TIME_Relative	timeout_request = { 60000 }
	User supplied timeout value (in seconds) More...

static int	verbose
	Be verbose. More...

static struct GNUNET_DHT_Handle *	dht_handle
	Handle to the DHT. More...

static const struct GNUNET_CONFIGURATION_Handle *	cfg
	Global handle of the configuration. More...

static struct GNUNET_DHT_MonitorHandle *	monitor_handle
	Handle for the get request. More...

static unsigned int	result_count
	Count of messages received. More...

static int	ret
	Global status value. More...

static struct GNUNET_SCHEDULER_Task *	tt
	Task scheduled to handle timeout. More...

Detailed Description

search for data in DHT

Author: Christian Grothoff; Bartlomiej Polot

Definition in file gnunet-dht-monitor.c.

Function Documentation

◆ cleanup_task()

static void cleanup_task ( void * cls )

static

Stop monitoring request and start shutdown.

Parameters

cls	closure (unused)

Definition at line 86 of file gnunet-dht-monitor.c.

{
  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;
  }
  if (NULL != tt)
  {
    GNUNET_SCHEDULER_cancel (tt);
    tt = NULL;
  }
}

References dht_handle, GNUNET_DHT_disconnect(), GNUNET_DHT_monitor_stop(), GNUNET_SCHEDULER_cancel(), monitor_handle, tt, and verbose.

Referenced by run().

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◆ timeout_task()

static void timeout_task ( void * cls )

static

We hit a timeout.

Stop monitoring request and start shutdown

Parameters

cls	closure (unused)

Definition at line 114 of file gnunet-dht-monitor.c.

{
  tt = NULL;
  GNUNET_SCHEDULER_shutdown ();
}

References GNUNET_SCHEDULER_shutdown(), and tt.

Referenced by run().

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◆ get_callback()

static void get_callback	(	void *	cls,
		enum GNUNET_DHT_RouteOption	options,
		enum GNUNET_BLOCK_Type	type,
		uint32_t	hop_count,
		uint32_t	desired_replication_level,
		const struct GNUNET_HashCode *	key
	)

static

Callback called on each GET request going through the DHT.

Parameters

cls	Closure.
options	Options, for instance RecordRoute, DemultiplexEverywhere.
type	The type of data in the request.
hop_count	Hop count so far.
desired_replication_level	Desired replication level.
key	Key of the requested data.

Definition at line 132 of file gnunet-dht-monitor.c.

{
  fprintf (stdout,
           "GET #%u: type %d, key `%s'\n",
           result_count,
           (int) type,
           GNUNET_h2s_full (key));
  result_count++;
}

References GNUNET_h2s_full(), key, result_count, and type.

Referenced by run().

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◆ get_resp_callback()

static void get_resp_callback	(	void *	cls,
		enum GNUNET_BLOCK_Type	type,
		const struct GNUNET_PeerIdentity *	trunc_peer,
		const struct GNUNET_DHT_PathElement *	get_path,
		unsigned int	get_path_length,
		const struct GNUNET_DHT_PathElement *	put_path,
		unsigned int	put_path_length,
		struct GNUNET_TIME_Absolute	exp,
		const struct GNUNET_HashCode *	key,
		const void *	data,
		size_t	size
	)

static

Callback called on each GET reply going through the DHT.

Parameters

cls	Closure.
type	The type of data in the result.
trunc_peer	peer where the path was truncated, or NULL if the path is complete
get_path	Peers on GET path (or NULL if not recorded).
get_path_length	number of entries in get_path.
put_path	peers on the PUT path (or NULL if not recorded).
put_path_length	number of entries in get_path.
exp	Expiration time of the data.
key	Key of the data.
data	Pointer to the result data.
size	Number of bytes in data.

Definition at line 164 of file gnunet-dht-monitor.c.

{
  fprintf (stdout,
           (GNUNET_BLOCK_TYPE_TEST == type)
           ? "RESPONSE #%u (%s): type %d, key `%s', data `%.*s'\n"
           : "RESPONSE #%u (%s): type %d, key `%s'\n",
           result_count,
           GNUNET_STRINGS_absolute_time_to_string (exp),
           (int) type,
           GNUNET_h2s_full (key),
           (unsigned int) size,
           (char *) data);
  result_count++;
}

References data, GNUNET_BLOCK_TYPE_TEST, GNUNET_h2s_full(), GNUNET_STRINGS_absolute_time_to_string(), key, result_count, size, and type.

Referenced by run().

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◆ put_callback()

static void put_callback	(	void *	cls,
		enum GNUNET_DHT_RouteOption	options,
		enum GNUNET_BLOCK_Type	type,
		uint32_t	hop_count,
		uint32_t	desired_replication_level,
		const struct GNUNET_PeerIdentity *	trunc_peer,
		unsigned int	path_length,
		const struct GNUNET_DHT_PathElement *	path,
		struct GNUNET_TIME_Absolute	exp,
		const struct GNUNET_HashCode *	key,
		const void *	data,
		size_t	size
	)

static

Callback called on each PUT request going through the DHT.

Parameters

cls	Closure.
options	Options, for instance RecordRoute, DemultiplexEverywhere.
type	The type of data in the request.
hop_count	Hop count so far.
trunc_peer	peer where the path was truncated, or NULL if the path is complete
path_length	number of entries in path (or 0 if not recorded).
path	peers on the PUT path (or NULL if not recorded).
desired_replication_level	Desired replication level.
exp	Expiration time of the data.
key	Key under which data is to be stored.
data	Pointer to the data carried.
size	Number of bytes in data.

Definition at line 207 of file gnunet-dht-monitor.c.

{
  fprintf (stdout,
           (GNUNET_BLOCK_TYPE_TEST == type)
           ? "PUT %u (%s): type %d, key `%s', data `%.*s'\n"
           : "PUT %u (%s): type %d, key `%s'\n",
           result_count,
           GNUNET_STRINGS_absolute_time_to_string (exp),
           (int) type,
           GNUNET_h2s_full (key),
           (unsigned int) size,
           (char *) data);
  result_count++;
}

References data, GNUNET_BLOCK_TYPE_TEST, GNUNET_h2s_full(), GNUNET_STRINGS_absolute_time_to_string(), key, result_count, size, and type.

Referenced by run().

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◆ run()

static void run	(	void *	cls,
		char const	args,
		const char *	cfgfile,
		const struct GNUNET_CONFIGURATION_Handle *	c
	)

static

Main function that will be run by the scheduler.

Parameters

cls	closure
args	remaining command-line arguments
cfgfile	name of the configuration file used (for saving, can be NULL!)
c	configuration

Definition at line 243 of file gnunet-dht-monitor.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));
  tt = GNUNET_SCHEDULER_add_delayed (timeout_request, &timeout_task, NULL);
  GNUNET_SCHEDULER_add_shutdown (&cleanup_task, NULL);
  monitor_handle = GNUNET_DHT_monitor_start (dht_handle,
                                             block_type,
                                             key,
                                             &get_callback,
                                             &get_resp_callback,
                                             &put_callback,
                                             NULL);
}

References _, block_type, cfg, cleanup_task(), dht_handle, get_callback(), get_resp_callback(), GNUNET_BLOCK_TYPE_ANY, GNUNET_BLOCK_TYPE_TEST, GNUNET_CRYPTO_hash(), GNUNET_CRYPTO_hash_from_string, GNUNET_DHT_connect(), GNUNET_DHT_monitor_start(), GNUNET_NO, GNUNET_OK, GNUNET_SCHEDULER_add_delayed(), GNUNET_SCHEDULER_add_shutdown(), GNUNET_STRINGS_relative_time_to_string(), key, monitor_handle, put_callback(), query_key, ret, timeout_request, timeout_task(), tt, and verbose.

Referenced by main().

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◆ main()

int main	(	int	argc,
		char const	argv
	)

Entry point for gnunet-dht-monitor.

Parameters

argc	number of arguments from the command line
argv	command line arguments

Returns: 0 ok, 1 on error

Definition at line 296 of file gnunet-dht-monitor.c.

{
  struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_option_string ('k',
                                 "key",
                                 "KEY",
                                 gettext_noop ("the query key"),
                                 &query_key),
 
    GNUNET_GETOPT_option_uint ('t',
                               "type",
                               "TYPE",
                               gettext_noop ("the type of data to look for"),
                               &block_type),
 
    GNUNET_GETOPT_option_relative_time (
      'T',
      "timeout",
      "TIMEOUT",
      gettext_noop ("how long should the monitor command run"),
      &timeout_request),
 
    GNUNET_GETOPT_option_flag ('V',
                               "verbose",
                               gettext_noop (
                                 "be verbose (print progress information)"),
                               &verbose),
 
    GNUNET_GETOPT_OPTION_END
  };
 
 
  return (GNUNET_OK ==
          GNUNET_PROGRAM_run (GNUNET_OS_project_data_gnunet (),
                              argc,
                              argv,
                              "gnunet-dht-monitor",
                              gettext_noop (
                                "Prints all packets that go through the DHT."),
                              options,
                              &run,
                              NULL))
         ? ret
         : 1;
}

References block_type, gettext_noop, GNUNET_GETOPT_OPTION_END, GNUNET_GETOPT_option_flag(), GNUNET_GETOPT_option_relative_time(), GNUNET_GETOPT_option_string(), GNUNET_GETOPT_option_uint(), GNUNET_OK, GNUNET_OS_project_data_gnunet(), GNUNET_PROGRAM_run(), options, query_key, ret, run(), timeout_request, and verbose.

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Variable Documentation

◆ block_type

unsigned int block_type

static

The type of the query.

Definition at line 32 of file gnunet-dht-monitor.c.

Referenced by GDS_helper_make_put_message(), main(), and run().

◆ query_key

char* query_key

static

The key to be monitored.

Definition at line 37 of file gnunet-dht-monitor.c.

Referenced by main(), and run().

◆ timeout_request

struct GNUNET_TIME_Relative timeout_request = { 60000 }

static

User supplied timeout value (in seconds)

Definition at line 42 of file gnunet-dht-monitor.c.

Referenced by main(), and run().

◆ verbose

int verbose

static

Be verbose.

Definition at line 47 of file gnunet-dht-monitor.c.

Referenced by cleanup_task(), main(), and run().

◆ dht_handle

struct GNUNET_DHT_Handle* dht_handle

static

Handle to the DHT.

Definition at line 52 of file gnunet-dht-monitor.c.

Referenced by cleanup_task(), and run().

◆ cfg

const struct GNUNET_CONFIGURATION_Handle* cfg

static

Global handle of the configuration.

Definition at line 57 of file gnunet-dht-monitor.c.

Referenced by run().

◆ monitor_handle

struct GNUNET_DHT_MonitorHandle* monitor_handle

static

Handle for the get request.

Definition at line 62 of file gnunet-dht-monitor.c.

Referenced by cleanup_task(), and run().

◆ result_count

unsigned int result_count

static

Count of messages received.

Definition at line 67 of file gnunet-dht-monitor.c.

Referenced by get_callback(), get_resp_callback(), and put_callback().

◆ ret

int ret

static

Global status value.

Definition at line 72 of file gnunet-dht-monitor.c.

Referenced by main(), and run().

◆ tt

struct GNUNET_SCHEDULER_Task* tt

static

Task scheduled to handle timeout.

Definition at line 77 of file gnunet-dht-monitor.c.

Referenced by cleanup_task(), run(), and timeout_task().

Functions

Variables

Detailed Description

Function Documentation

◆ cleanup_task()

◆ timeout_task()

◆ get_callback()

◆ get_resp_callback()

◆ put_callback()

◆ run()

◆ main()

Variable Documentation

◆ block_type

◆ query_key

◆ timeout_request

◆ verbose

◆ dht_handle

◆ cfg

◆ monitor_handle

◆ result_count

◆ ret

◆ tt