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/*
This file is part of GNUnet.
(C) 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-core-list-connections.c
* @brief Print information about other known _connected_ peers.
* @author Nathan Evans
*/
#include "platform.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_configuration_lib.h"
#include "gnunet_getopt_lib.h"
#include "gnunet_peerinfo_service.h"
#include "gnunet_transport_service.h"
#include "gnunet_core_service.h"
#include "gnunet_program_lib.h"
#define VERBOSE 0
static int no_resolve;
#if VERBOSE
static unsigned int peer_count;
#endif
static const struct GNUNET_CONFIGURATION_Handle *cfg;
struct AddressStringList
{
/**
* Pointer to previous element.
*/
struct AddressStringList *prev;
/**
* Pointer to next element.
*/
struct AddressStringList *next;
/**
* Address as string.
*/
char *address_string;
};
struct PrintContext
{
struct GNUNET_PeerIdentity peer;
struct AddressStringList *address_list_head;
struct AddressStringList *address_list_tail;
};
static void
dump_pc (struct PrintContext *pc)
{
struct GNUNET_CRYPTO_HashAsciiEncoded enc;
struct AddressStringList *address;
GNUNET_CRYPTO_hash_to_enc (&pc->peer.hashPubKey, &enc);
printf (_("Peer `%s'\n"), (const char *) &enc);
while (NULL != (address = pc->address_list_head))
{
printf ("\t%s\n", address->address_string);
GNUNET_free (address->address_string);
GNUNET_CONTAINER_DLL_remove (pc->address_list_head, pc->address_list_tail,
address);
GNUNET_free (address);
}
printf ("\n");
GNUNET_free (pc);
}
/**
* Function to call with a human-readable format of an address
*
* @param cls closure
* @param peer peer this update is about
* @param address NULL on error, otherwise 0-terminated printable UTF-8 string
*/
static void
process_resolved_address (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_HELLO_Address *address)
{
struct PrintContext *pc = cls;
// struct AddressStringList *new_address;
if (address == NULL)
{
dump_pc (pc);
return;
}
/* This does exactly the same as gnunet-transport -i ! */
/*
* new_address = GNUNET_malloc (sizeof (struct AddressStringList));
* #if VERBOSE
* FPRINTF (stderr, "Received address %s\n", address);
* #endif
*
* new_address->address_string = GNUNET_strdup ("FIXME");
* GNUNET_CONTAINER_DLL_insert (pc->address_list_head, pc->address_list_tail,
* new_address);
*/
}
/**
* Callback for retrieving a list of connected peers.
*/
static void
connected_peer_callback (void *cls, const struct GNUNET_PeerIdentity *peer,
const struct GNUNET_ATS_Information *atsi,
unsigned int atsi_count)
{
struct PrintContext *pc;
if (peer != NULL) /* Not yet finished */
{
#if VERBOSE
FPRINTF (stderr, "Learned about peer %s\n", GNUNET_i2s (peer));
peer_count++;
#endif
pc = GNUNET_malloc (sizeof (struct PrintContext));
pc->peer = *peer;
GNUNET_TRANSPORT_peer_get_active_addresses (cfg, peer, GNUNET_YES,
GNUNET_TIME_UNIT_MINUTES,
&process_resolved_address, pc);
}
#if VERBOSE
else
{
FPRINTF (stderr, "Counted %u total connected peers.\n", peer_count);
}
#endif
}
/**
* 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)
{
cfg = c;
if (args[0] != NULL)
{
FPRINTF (stderr, _("Invalid command line argument `%s'\n"), args[0]);
return;
}
GNUNET_CORE_iterate_peers (cfg, &connected_peer_callback, NULL);
}
/**
* The main function to obtain peer information.
*
* @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)
{
static const struct GNUNET_GETOPT_CommandLineOption options[] = {
{'n', "numeric", NULL,
gettext_noop ("don't resolve host names"),
0, &GNUNET_GETOPT_set_one, &no_resolve},
GNUNET_GETOPT_OPTION_END
};
return (GNUNET_OK ==
GNUNET_PROGRAM_run (argc, argv, "gnunet-list-connections",
gettext_noop
("Print information about connected peers."),
options, &run, NULL)) ? 0 : 1;
}
/* end of gnunet-core-list-connections.c */
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