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Diffstat (limited to 'src/core/gnunet-core-list-connections.c')
| -rw-r--r-- | src/core/gnunet-core-list-connections.c | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/core/gnunet-core-list-connections.c b/src/core/gnunet-core-list-connections.c new file mode 100644 index 0000000..fcd0765 --- /dev/null +++ b/src/core/gnunet-core-list-connections.c @@ -0,0 +1,207 @@ +/* + 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 */ |