2 This file is part of GNUnet.
3 (C) 2001-2014 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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13 General Public License for more details.
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22 * @file peerinfo-tool/gnunet-peerinfo.c
23 * @brief Print information about other known peers.
24 * @author Christian Grothoff
25 * @author Matthias Wachs
28 #include "gnunet_util_lib.h"
29 #include "gnunet_hello_lib.h"
30 #include "gnunet_transport_service.h"
31 #include "gnunet_peerinfo_service.h"
32 #include "gnunet-peerinfo_plugins.h"
35 * How long until we time out during peerinfo iterations?
37 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
40 * Structure we use to collect printable address information.
45 * Record we keep for each printable address.
50 * Current address-to-string context (if active, otherwise NULL).
52 struct GNUNET_TRANSPORT_AddressToStringContext *atsc;
55 * Address expiration time
57 struct GNUNET_TIME_Absolute expiration;
65 * Print context this address record belongs to.
67 struct PrintContext *pc;
72 * Structure we use to collect printable address information.
80 struct PrintContext *next;
85 struct PrintContext *prev;
88 * Identity of the peer.
90 struct GNUNET_PeerIdentity peer;
93 * List of printable addresses.
95 struct AddressRecord *address_list;
98 * Number of completed addresses in @e address_list.
100 unsigned int num_addresses;
103 * Number of addresses allocated in @e address_list.
105 unsigned int address_list_size;
108 * Current offset in @e address_list (counted down).
113 * Hello was friend only, #GNUNET_YES or #GNUNET_NO
123 static int no_resolve;
133 static int include_friend_only;
148 static int default_operation;
158 static char *put_uri;
163 static char *dump_hello;
166 * Handle to peerinfo service.
168 static struct GNUNET_PEERINFO_Handle *peerinfo;
171 * Configuration handle.
173 static const struct GNUNET_CONFIGURATION_Handle *cfg;
176 * Main state machine task (if active).
178 static GNUNET_SCHEDULER_TaskIdentifier tt;
181 * Current iterator context (if active, otherwise NULL).
183 static struct GNUNET_PEERINFO_IteratorContext *pic;
188 static struct GNUNET_PeerIdentity my_peer_identity;
191 * Head of list of print contexts.
193 static struct PrintContext *pc_head;
196 * Tail of list of print contexts.
198 static struct PrintContext *pc_tail;
201 * Handle to current #GNUNET_PEERINFO_add_peer() operation.
203 static struct GNUNET_PEERINFO_AddContext *ac;
207 * Main state machine that goes over all options and
208 * runs the next requested function.
214 state_machine (void *cls,
215 const struct GNUNET_SCHEDULER_TaskContext *tc);
218 /* ********************* 'get_info' ******************* */
221 * Print the collected address information to the console and free @a pc.
223 * @param pc printing context
226 dump_pc (struct PrintContext *pc)
230 printf (_("%sPeer `%s'\n"),
231 (GNUNET_YES == pc->friend_only) ? "F2F: " : "",
232 GNUNET_i2s_full (&pc->peer));
233 for (i = 0; i < pc->num_addresses; i++)
235 if (NULL != pc->address_list[i].result)
237 printf (_("\tExpires: %s \t %s\n"),
238 GNUNET_STRINGS_absolute_time_to_string (pc->address_list[i].expiration),
239 pc->address_list[i].result);
240 GNUNET_free (pc->address_list[i].result);
244 GNUNET_free_non_null (pc->address_list);
245 GNUNET_CONTAINER_DLL_remove (pc_head,
249 if ( (NULL == pc_head) &&
251 tt = GNUNET_SCHEDULER_add_now (&state_machine,
256 /* ************************* list all known addresses **************** */
260 * Function to call with a human-readable format of an address
263 * @param address NULL on error, otherwise 0-terminated printable UTF-8 string
264 * @param res result of the address to string conversion:
265 * if #GNUNET_OK: address was valid (conversion to
266 * string might still have failed)
267 * if #GNUNET_SYSERR: address is invalid
270 process_resolved_address (void *cls,
274 struct AddressRecord *ar = cls;
275 struct PrintContext *pc = ar->pc;
279 if (NULL == ar->result)
280 ar->result = GNUNET_strdup (address);
284 if (GNUNET_SYSERR == res)
287 _("Failure: Cannot convert address to string for peer `%s'\n"),
288 GNUNET_i2s (&ar->pc->peer));
294 if (pc->num_addresses == pc->address_list_size)
300 * Iterator callback to go over all addresses and count them.
302 * @param cls `struct PrintContext *` with `off` to increment
303 * @param address the address
304 * @param expiration expiration time
305 * @return #GNUNET_OK to keep the address and continue
308 count_address (void *cls,
309 const struct GNUNET_HELLO_Address *address,
310 struct GNUNET_TIME_Absolute expiration)
312 struct PrintContext *pc = cls;
320 * Iterator callback to go over all addresses.
323 * @param address the address
324 * @param expiration expiration time
325 * @return #GNUNET_OK to keep the address and continue
328 print_address (void *cls,
329 const struct GNUNET_HELLO_Address *address,
330 struct GNUNET_TIME_Absolute expiration)
332 struct PrintContext *pc = cls;
333 struct AddressRecord *ar;
335 GNUNET_assert (0 < pc->off);
336 ar = &pc->address_list[--pc->off];
338 ar->expiration = expiration;
339 ar->atsc = GNUNET_TRANSPORT_address_to_string (cfg,
342 GNUNET_TIME_relative_multiply
343 (GNUNET_TIME_UNIT_SECONDS, 10),
344 &process_resolved_address, ar);
350 * Print information about the peer. Currently prints the `struct
351 * GNUNET_PeerIdentity` and the transport address.
353 * @param cls the `struct PrintContext *`
354 * @param peer identity of the peer
355 * @param hello addresses of the peer
356 * @param err_msg error message
359 print_peer_info (void *cls,
360 const struct GNUNET_PeerIdentity *peer,
361 const struct GNUNET_HELLO_Message *hello,
364 struct PrintContext *pc;
369 pic = NULL; /* end of iteration */
373 _("Error in communication with PEERINFO service: %s\n"),
377 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
380 friend_only = GNUNET_NO;
382 friend_only = GNUNET_HELLO_is_friend_only (hello);
383 if ( (GNUNET_YES == be_quiet) ||
387 (GNUNET_YES == friend_only) ? "F2F: " : "",
388 GNUNET_i2s_full (peer));
391 pc = GNUNET_new (struct PrintContext);
392 GNUNET_CONTAINER_DLL_insert (pc_head,
396 pc->friend_only = friend_only;
397 GNUNET_HELLO_iterate_addresses (hello,
406 pc->address_list_size = pc->off;
407 pc->address_list = GNUNET_malloc (sizeof (struct AddressRecord) * pc->off);
408 GNUNET_HELLO_iterate_addresses (hello,
414 /* ************************* DUMP Hello ************************** */
417 * Count the number of addresses in the HELLO.
419 * @param cls pointer to an `int *` used for the counter
420 * @param address an address to count
421 * @param expiration (unused)
425 count_addr (void *cls,
426 const struct GNUNET_HELLO_Address *address,
427 struct GNUNET_TIME_Absolute expiration)
437 * Write HELLO of my peer to a file.
439 * @param cls the `struct GetUriContext *`
440 * @param peer identity of the peer (unused)
441 * @param hello addresses of the peer
442 * @param err_msg error message
445 dump_my_hello (void *cls,
446 const struct GNUNET_PeerIdentity *peer,
447 const struct GNUNET_HELLO_Message *hello,
458 _("Error in communication with PEERINFO service: %s\n"),
460 tt = GNUNET_SCHEDULER_add_now (&state_machine,
468 _("Failure: Did not receive %s\n"),
473 size = GNUNET_HELLO_size (hello);
477 _("Failure: Received invalid %s\n"),
482 GNUNET_DISK_fn_write (dump_hello, hello, size,
483 GNUNET_DISK_PERM_USER_READ |
484 GNUNET_DISK_PERM_USER_WRITE |
485 GNUNET_DISK_PERM_GROUP_READ |
486 GNUNET_DISK_PERM_OTHER_READ))
489 _("Failed to write HELLO with %u bytes to file `%s'\n"),
492 if (0 != UNLINK (dump_hello))
493 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING |
494 GNUNET_ERROR_TYPE_BULK,
500 GNUNET_HELLO_iterate_addresses (hello,
508 _("Wrote %s HELLO containing %u addresses with %u bytes to file `%s'\n"),
509 (GNUNET_YES == GNUNET_HELLO_is_friend_only(hello)) ? "friend-only": "public",
514 GNUNET_free (dump_hello);
519 /* ************************* GET URI ************************** */
523 * Print URI of the peer.
525 * @param cls the `struct GetUriContext *`
526 * @param peer identity of the peer (unused)
527 * @param hello addresses of the peer
528 * @param err_msg error message
531 print_my_uri (void *cls,
532 const struct GNUNET_PeerIdentity *peer,
533 const struct GNUNET_HELLO_Message *hello,
541 _("Error in communication with PEERINFO service: %s\n"),
543 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
549 char *uri = GNUNET_HELLO_compose_uri (hello,
560 /* ************************* import HELLO by URI ********************* */
564 * Continuation called from #GNUNET_PEERINFO_add_peer()
566 * @param cls closure, NULL
567 * @param emsg error message, NULL on success
570 add_continuation (void *cls,
576 _("Failure adding HELLO: %s\n"),
578 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
583 * Parse the PUT URI given at the command line and add it to our peerinfo
586 * @param put_uri URI string to parse
587 * @return #GNUNET_OK on success,
588 * #GNUNET_SYSERR if the URI was invalid,
589 * #GNUNET_NO on other errors
592 parse_hello_uri (const char *put_uri)
594 struct GNUNET_HELLO_Message *hello = NULL;
596 int ret = GNUNET_HELLO_parse_uri(put_uri,
597 &my_peer_identity.public_key,
603 /* WARNING: this adds the address from URI WITHOUT verification! */
604 if (GNUNET_OK == ret)
605 ac = GNUNET_PEERINFO_add_peer (peerinfo, hello,
609 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
613 /* wait 1s to give peerinfo operation a chance to succeed */
614 /* FIXME: current peerinfo API sucks to require this; not to mention
615 that we get no feedback to determine if the operation actually succeeded */
620 /* ************************ Main state machine ********************* */
624 * Main state machine that goes over all options and
625 * runs the next requested function.
628 * @param tc scheduler context
631 shutdown_task (void *cls,
632 const struct GNUNET_SCHEDULER_TaskContext *tc)
634 struct PrintContext *pc;
635 struct AddressRecord *ar;
640 GNUNET_PEERINFO_add_peer_cancel (ac);
643 if (GNUNET_SCHEDULER_NO_TASK != tt)
645 GNUNET_SCHEDULER_cancel (tt);
646 tt = GNUNET_SCHEDULER_NO_TASK;
650 GNUNET_PEERINFO_iterate_cancel (pic);
653 while (NULL != (pc = pc_head))
655 GNUNET_CONTAINER_DLL_remove (pc_head,
658 for (i=0;i<pc->address_list_size;i++)
660 ar = &pc->address_list[i];
661 GNUNET_free_non_null (ar->result);
662 if (NULL != ar->atsc)
664 GNUNET_TRANSPORT_address_to_string_cancel (ar->atsc);
668 GNUNET_free_non_null (pc->address_list);
671 GPI_plugins_unload ();
672 if (NULL != peerinfo)
674 GNUNET_PEERINFO_disconnect (peerinfo);
681 * Function called with the result of the check if the PEERINFO
682 * service is running.
684 * @param cls closure with our configuration
685 * @param result #GNUNET_YES if PEERINFO is running
688 testservice_task (void *cls,
691 struct GNUNET_CRYPTO_EddsaPrivateKey *priv;
694 if (GNUNET_YES != result)
697 _("Service `%s' is not running, please start GNUnet\n"),
702 if (NULL == (peerinfo = GNUNET_PEERINFO_connect (cfg)))
706 _("Could not access PEERINFO service. Exiting.\n"));
709 if ( (GNUNET_YES == get_self) ||
710 (GNUNET_YES == get_uri) ||
711 (NULL != dump_hello) )
713 /* load private key */
715 GNUNET_CONFIGURATION_get_value_filename (cfg,
720 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
725 if (NULL == (priv = GNUNET_CRYPTO_eddsa_key_create_from_file (fn)))
728 _("Loading hostkey from `%s' failed.\n"),
734 GNUNET_CRYPTO_eddsa_key_get_public (priv,
735 &my_peer_identity.public_key);
739 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
740 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
747 * Main function that will be run by the scheduler.
750 * @param args remaining command-line arguments
751 * @param cfgfile name of the configuration file used (for saving, can be NULL!)
752 * @param c configuration
758 const struct GNUNET_CONFIGURATION_Handle *c)
761 if ( (NULL != args[0]) &&
763 (args[0] == strcasestr (args[0], "gnunet://hello/")) )
765 put_uri = GNUNET_strdup (args[0]);
771 _("Invalid command line argument `%s'\n"),
776 GNUNET_CLIENT_service_test ("peerinfo",
778 GNUNET_TIME_UNIT_SECONDS,
779 &testservice_task, (void *) cfg);
784 * Main state machine that goes over all options and
785 * runs the next requested function.
788 * @param tc scheduler context
791 state_machine (void *cls,
792 const struct GNUNET_SCHEDULER_TaskContext *tc)
794 tt = GNUNET_SCHEDULER_NO_TASK;
798 GPI_plugins_load (cfg);
799 if (GNUNET_SYSERR == parse_hello_uri (put_uri))
802 _("Invalid URI `%s'\n"),
804 GNUNET_SCHEDULER_shutdown ();
806 GNUNET_free (put_uri);
809 else if (GNUNET_YES == get_info)
811 get_info = GNUNET_NO;
812 GPI_plugins_load (cfg);
813 pic = GNUNET_PEERINFO_iterate (peerinfo,
817 &print_peer_info, NULL);
819 else if (GNUNET_YES == get_self)
821 get_self = GNUNET_NO;
824 GNUNET_i2s_full (&my_peer_identity));
826 printf (_("I am peer `%s'.\n"),
827 GNUNET_i2s_full (&my_peer_identity));
828 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
830 else if (GNUNET_YES == get_uri)
832 GPI_plugins_load (cfg);
833 pic = GNUNET_PEERINFO_iterate (peerinfo,
837 &print_my_uri, NULL);
840 else if (NULL != dump_hello)
842 pic = GNUNET_PEERINFO_iterate (peerinfo,
846 &dump_my_hello, NULL);
848 else if (GNUNET_YES == default_operation)
850 /* default operation list all */
851 default_operation = GNUNET_NO;
852 get_info = GNUNET_YES;
853 tt = GNUNET_SCHEDULER_add_now (&state_machine, NULL);
857 GNUNET_SCHEDULER_shutdown ();
859 default_operation = GNUNET_NO;
864 * The main function to obtain peer information.
866 * @param argc number of arguments from the command line
867 * @param argv command line arguments
868 * @return 0 ok, 1 on error
871 main (int argc, char *const *argv)
873 static const struct GNUNET_GETOPT_CommandLineOption options[] = {
874 {'n', "numeric", NULL,
875 gettext_noop ("don't resolve host names"),
876 0, &GNUNET_GETOPT_set_one, &no_resolve},
878 gettext_noop ("output only the identity strings"),
879 0, &GNUNET_GETOPT_set_one, &be_quiet},
880 {'f', "friends", NULL,
881 gettext_noop ("include friend-only information"),
882 0, &GNUNET_GETOPT_set_one, &include_friend_only},
884 gettext_noop ("output our own identity only"),
885 0, &GNUNET_GETOPT_set_one, &get_self},
887 gettext_noop ("list all known peers"),
888 0, &GNUNET_GETOPT_set_one, &get_info},
889 {'d', "dump-hello", NULL,
890 gettext_noop ("dump hello to file"),
891 1, &GNUNET_GETOPT_set_string, &dump_hello},
892 {'g', "get-hello", NULL,
893 gettext_noop ("also output HELLO uri(s)"),
894 0, &GNUNET_GETOPT_set_one, &get_uri},
895 {'p', "put-hello", "HELLO",
896 gettext_noop ("add given HELLO uri to the database"),
897 1, &GNUNET_GETOPT_set_string, &put_uri},
898 GNUNET_GETOPT_OPTION_END
902 default_operation = GNUNET_YES;
903 if (GNUNET_OK != GNUNET_STRINGS_get_utf8_args (argc,
909 GNUNET_PROGRAM_run (argc, argv, "gnunet-peerinfo",
910 gettext_noop ("Print information about peers."),
911 options, &run, NULL)) ? 0 : 1;
912 GNUNET_free ((void*) argv);
916 /* end of gnunet-peerinfo.c */