2 This file is part of GNUnet
3 (C) 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file testing/testing_group.c
23 * @brief convenience API for writing testcases for GNUnet
24 * @author Christian Grothoff
27 #include "gnunet_arm_service.h"
28 #include "gnunet_testing_lib.h"
30 #define VERBOSE_TESTING GNUNET_YES
33 * Lowest port used for GNUnet testing. Should be high enough to not
34 * conflict with other applications running on the hosts but be low
35 * enough to not conflict with client-ports (typically starting around
38 #define LOW_PORT 10000
41 * Highest port used for GNUnet testing. Should be low enough to not
42 * conflict with the port range for "local" ports (client apps; see
43 * /proc/sys/net/ipv4/ip_local_port_range on Linux for example).
45 #define HIGH_PORT 32000
47 #define CONNECT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 180)
54 struct PeerConnection *next;
57 * Pointer to daemon handle
59 struct GNUNET_TESTING_Daemon *daemon;
64 * Data we keep per peer.
69 * (Initial) configuration of the host.
70 * (initial because clients could change
71 * it and we would not know about those
74 struct GNUNET_CONFIGURATION_Handle *cfg;
77 * Handle for controlling the daemon.
79 struct GNUNET_TESTING_Daemon *daemon;
82 * Linked list of peer connections (simply indexes of PeerGroup)
83 * FIXME: Question, store pointer or integer? Pointer for now...
85 struct PeerConnection *connected_peers;
90 * Data we keep per host.
100 * Lowest port that we have not yet used
108 * Handle to a group of GNUnet peers.
110 struct GNUNET_TESTING_PeerGroup
115 struct GNUNET_SCHEDULER_Handle *sched;
118 * Configuration template.
120 const struct GNUNET_CONFIGURATION_Handle *cfg;
123 * Function to call on each started daemon.
125 GNUNET_TESTING_NotifyDaemonRunning cb;
133 * Function to call on each topology connection created
135 GNUNET_TESTING_NotifyConnection notify_connection;
138 * Callback for notify_connection
140 void *notify_connection_cls;
143 * NULL-terminated array of information about
146 struct HostData *hosts;
149 * Array of "total" peers.
151 struct PeerData *peers;
154 * Number of peers in this group.
163 struct GNUNET_CONFIGURATION_Handle *ret;
168 * Function to iterate over options. Copies
169 * the options to the target configuration,
170 * updating PORT values as needed.
173 * @param section name of the section
174 * @param option name of the option
175 * @param value value of the option
178 update_config (void *cls,
179 const char *section, const char *option, const char *value)
181 struct UpdateContext *ctx = cls;
185 if ((0 == strcmp (option, "PORT")) && (1 == sscanf (value, "%u", &ival)))
187 GNUNET_snprintf (cval, sizeof (cval), "%u", ctx->nport++);
190 GNUNET_CONFIGURATION_set_value_string (ctx->ret, section, option, value);
195 * Create a new configuration using the given configuration
196 * as a template; however, each PORT in the existing cfg
197 * must be renumbered by incrementing "*port". If we run
198 * out of "*port" numbers, return NULL.
200 * @param cfg template configuration
201 * @param port port numbers to use, update to reflect
202 * port numbers that were used
203 * @return new configuration, NULL on error
205 static struct GNUNET_CONFIGURATION_Handle *
206 make_config (const struct GNUNET_CONFIGURATION_Handle *cfg, uint16_t * port)
208 struct UpdateContext uc;
213 uc.ret = GNUNET_CONFIGURATION_create ();
214 GNUNET_CONFIGURATION_iterate (cfg, &update_config, &uc);
215 if (uc.nport >= HIGH_PORT)
218 GNUNET_CONFIGURATION_destroy (uc.ret);
221 *port = (uint16_t) uc.nport;
226 * Add entries to the peers connected list
228 * @param pg the peer group we are working with
229 * @param first index of the first peer
230 * @param second index of the second peer
232 * @return the number of connections added (can be 0, 1 or 2)
234 * FIXME: add both, or only add one?
235 * - if both are added, then we have to keep track
236 * when connecting so we don't double connect
237 * - if only one is added, we need to iterate over
238 * both lists to find out if connection already exists
239 * - having both allows the whitelisting/friend file
240 * creation to be easier
242 * -- For now, add both, we have to iterate over each to
243 * check for duplicates anyways, so we'll take the performance
244 * hit assuming we don't have __too__ many connections
248 add_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first, unsigned int second)
251 struct PeerConnection *first_iter;
252 struct PeerConnection *second_iter;
255 struct PeerConnection *new_first;
256 struct PeerConnection *new_second;
258 first_iter = pg->peers[first].connected_peers;
259 add_first = GNUNET_YES;
260 while (first_iter != NULL)
262 if (first_iter->daemon == pg->peers[second].daemon)
263 add_first = GNUNET_NO;
264 first_iter = first_iter->next;
267 second_iter = pg->peers[second].connected_peers;
268 add_second = GNUNET_YES;
269 while (second_iter != NULL)
271 if (second_iter->daemon == pg->peers[first].daemon)
272 add_second = GNUNET_NO;
273 second_iter = second_iter->next;
279 new_first = GNUNET_malloc(sizeof(struct PeerConnection));
280 new_first->daemon = pg->peers[second].daemon;
281 new_first->next = pg->peers[first].connected_peers;
282 pg->peers[first].connected_peers = new_first;
288 new_second = GNUNET_malloc(sizeof(struct PeerConnection));
289 new_second->daemon = pg->peers[first].daemon;
290 new_second->next = pg->peers[second].connected_peers;
291 pg->peers[second].connected_peers = new_second;
299 create_small_world_ring(struct GNUNET_TESTING_PeerGroup *pg)
304 unsigned int randomPeer;
305 double random, logNModifier, percentage;
306 unsigned int smallWorldConnections;
312 int connect_attempts;
313 struct GNUNET_TIME_Absolute time;
315 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "LOGNMODIFIER", &p_string);
316 if ((p_string == NULL) || (sscanf(p_string, "%lf", &logNModifier) != 1))
317 logNModifier = 0.5; /* FIXME: default modifier? */
319 GNUNET_free_non_null(p_string);
321 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PERCENTAGE", &p_string);
322 if ((p_string == NULL) || (sscanf(p_string, "%lf", &percentage) != 1))
323 percentage = 0.5; /* FIXME: default percentage? */
325 GNUNET_free_non_null(p_string);
327 natLog = log (pg->total);
328 connsPerPeer = ceil (natLog * logNModifier);
330 if (connsPerPeer % 2 == 1)
333 smallWorldConnections = 0;
334 connect_attempts = 0;
335 for (i = 0; i < pg->total; i++)
338 max = i + connsPerPeer / 2;
339 min = i - connsPerPeer / 2;
341 if (max > pg->total - 1)
343 max = max - pg->total;
349 min = pg->total - 1 + min;
353 for (j = 0; j < connsPerPeer / 2; j++)
355 random = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
356 (uint64_t)-1LL)) / ( (double) (uint64_t) -1LL);
357 if (random < percentage)
359 /* Connect to uniformly selected random peer */
361 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
363 while ((((randomPeer < max) && (randomPeer > min))
364 && (useAnd == 0)) || (((randomPeer > min)
365 || (randomPeer < max))
369 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
372 smallWorldConnections +=
373 add_connections (pg, i, randomPeer);
377 nodeToConnect = i + j + 1;
378 if (nodeToConnect > pg->total - 1)
380 nodeToConnect = nodeToConnect - pg->total;
383 add_connections (pg, i, nodeToConnect);
389 connect_attempts += smallWorldConnections;
391 return connect_attempts;
396 create_nated_internet (struct GNUNET_TESTING_PeerGroup *pg)
398 unsigned int outer_count, inner_count;
400 int connect_attempts;
401 double nat_percentage;
404 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "NATPERCENTAGE", &p_string);
405 if ((p_string == NULL) || (sscanf(p_string, "%lf", &nat_percentage) != 1))
406 nat_percentage = 0.6; /* FIXME: default modifier? */
408 GNUNET_free_non_null(p_string);
410 cutoff = (unsigned int) (nat_percentage * pg->total);
412 connect_attempts = 0;
414 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
416 for (inner_count = outer_count + 1; inner_count < pg->total;
419 if ((outer_count > cutoff) || (inner_count > cutoff))
422 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
423 "Connecting peer %d to peer %d\n",
424 outer_count, inner_count);
426 connect_attempts += add_connections(pg, outer_count, inner_count);
431 return connect_attempts;
438 create_small_world (struct GNUNET_TESTING_PeerGroup *pg)
440 unsigned int i, j, k;
444 unsigned int toggle = 1;
445 unsigned int nodeToConnect;
447 unsigned int node1Row;
448 unsigned int node1Col;
449 unsigned int node2Row;
450 unsigned int node2Col;
451 unsigned int distance;
452 double probability, random, percentage;
453 unsigned int smallWorldConnections;
455 int connect_attempts;
456 square = floor (sqrt (pg->total));
460 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PERCENTAGE", &p_string);
461 if ((p_string == NULL) || (sscanf(p_string, "%lf", &percentage) != 1))
462 percentage = 0.5; /* FIXME: default percentage? */
464 GNUNET_free_non_null(p_string);
466 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PROBABILITY", &p_string);
467 if ((p_string == NULL) || (sscanf(p_string, "%lf", &probability) != 1))
468 probability = 0.5; /* FIXME: default probability? */
470 GNUNET_free_non_null(p_string);
472 if (square * square != pg->total)
474 while (rows * cols < pg->total)
485 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
486 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
490 connect_attempts = 0;
491 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
492 * to the node to its right and above. Once this is over, we'll have our torus!
493 * Special case for the last node (if the rows and columns are not equal), connect
494 * to the first in the row to maintain topology.
496 for (i = 0; i < pg->total; i++)
498 /* First connect to the node to the right */
499 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
500 nodeToConnect = i + 1;
501 else if (i + 1 == pg->total)
502 nodeToConnect = rows * cols - cols;
504 nodeToConnect = i - cols + 1;
506 connect_attempts += add_connections (pg, i, nodeToConnect);
509 nodeToConnect = (rows * cols) - cols + i;
511 nodeToConnect = i - cols;
513 if (nodeToConnect < pg->total)
514 connect_attempts += add_connections (pg, i, nodeToConnect);
516 natLog = log (pg->total);
518 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
519 _("natural log of %d is %d, will run %d iterations\n"),
520 pg->total, natLog, (int) (natLog * percentage));
521 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Total connections added thus far: %u!\n"), connect_attempts);
523 smallWorldConnections = 0;
524 for (i = 0; i < (int) (natLog * percentage); i++)
526 for (j = 0; j < pg->total; j++)
528 /* Determine the row and column of node at position j on the 2d torus */
530 node1Col = j - (node1Row * cols);
531 for (k = 0; k < pg->total; k++)
533 /* Determine the row and column of node at position k on the 2d torus */
535 node2Col = k - (node2Row * cols);
536 /* Simple Cartesian distance */
537 distance = abs (node1Row - node2Row) + abs (node1Col - node2Col);
540 /* Calculate probability as 1 over the square of the distance */
541 probability = 1.0 / (distance * distance);
542 /* Choose a random value between 0 and 1 */
543 random = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
544 (uint64_t)-1LL)) / ( (double) (uint64_t) -1LL);
545 /* If random < probability, then connect the two nodes */
546 if (random < probability)
547 smallWorldConnections += add_connections (pg, j, k);
553 connect_attempts += smallWorldConnections;
555 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
556 _("Total connections added for small world: %d!\n"),
557 smallWorldConnections);
559 return connect_attempts;
565 create_erdos_renyi (struct GNUNET_TESTING_PeerGroup *pg)
568 unsigned int outer_count;
569 unsigned int inner_count;
570 int connect_attempts;
573 connect_attempts = 0;
575 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PROBABILITY", &p_string);
576 if ((p_string == NULL) || (sscanf(p_string, "%lf", &probability) != 1))
577 probability = 0.5; /* FIXME: default probability? */
579 GNUNET_free_non_null (p_string);
580 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
582 for (inner_count = outer_count + 1; inner_count < pg->total;
585 temp_rand = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
586 (uint64_t)-1LL)) / ( (double) (uint64_t) -1LL);
588 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
589 _("rand is %f probability is %f\n"), temp_rand,
592 if (temp_rand < probability)
594 connect_attempts += add_connections (pg, outer_count, inner_count);
599 return connect_attempts;
603 create_2d_torus (struct GNUNET_TESTING_PeerGroup *pg)
609 unsigned int toggle = 1;
610 unsigned int nodeToConnect;
611 int connect_attempts;
613 connect_attempts = 0;
615 square = floor (sqrt (pg->total));
619 if (square * square != pg->total)
621 while (rows * cols < pg->total)
632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
633 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
636 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
637 * to the node to its right and above. Once this is over, we'll have our torus!
638 * Special case for the last node (if the rows and columns are not equal), connect
639 * to the first in the row to maintain topology.
641 for (i = 0; i < pg->total; i++)
643 /* First connect to the node to the right */
644 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
645 nodeToConnect = i + 1;
646 else if (i + 1 == pg->total)
647 nodeToConnect = rows * cols - cols;
649 nodeToConnect = i - cols + 1;
651 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
652 "Connecting peer %d to peer %d\n",
655 connect_attempts += add_connections(pg, i, nodeToConnect);
657 /* Second connect to the node immediately above */
659 nodeToConnect = (rows * cols) - cols + i;
661 nodeToConnect = i - cols;
663 if (nodeToConnect < pg->total)
666 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
667 "Connecting peer %d to peer %d\n",
670 connect_attempts += add_connections(pg, i, nodeToConnect);
675 return connect_attempts;
681 create_clique (struct GNUNET_TESTING_PeerGroup *pg)
683 unsigned int outer_count;
684 unsigned int inner_count;
685 int connect_attempts;
687 connect_attempts = 0;
689 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
691 for (inner_count = outer_count + 1; inner_count < pg->total;
695 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
696 "Connecting peer %d to peer %d\n",
697 outer_count, inner_count);
699 connect_attempts += add_connections(pg, outer_count, inner_count);
703 return connect_attempts;
708 create_ring (struct GNUNET_TESTING_PeerGroup *pg)
711 int connect_attempts;
713 connect_attempts = 0;
715 /* Connect each peer to the next highest numbered peer */
716 for (count = 0; count < pg->total - 1; count++)
719 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
720 "Connecting peer %d to peer %d\n",
723 connect_attempts += add_connections(pg, count, count + 1);
726 /* Connect the last peer to the first peer */
727 connect_attempts += add_connections(pg, pg->total - 1, 0);
729 return connect_attempts;
734 * Create the friend files based on the PeerConnection's
735 * of each peer in the peer group, and copy the files
736 * to the appropriate place
738 * @param pg the peer group we are dealing with
741 create_and_copy_friend_files (struct GNUNET_TESTING_PeerGroup *pg)
743 FILE *temp_friend_handle;
744 unsigned int pg_iter;
745 struct PeerConnection *connection_iter;
746 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
747 char *temp_service_path;
750 struct GNUNET_PeerIdentity *temppeer;
752 enum GNUNET_OS_ProcessStatusType type;
753 unsigned long return_code;
758 pidarr = GNUNET_malloc(sizeof(pid_t) * pg->total);
759 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
761 mytemp = GNUNET_DISK_mktemp("friends");
762 temp_friend_handle = fopen (mytemp, "wt");
763 connection_iter = pg->peers[pg_iter].connected_peers;
764 while (connection_iter != NULL)
766 temppeer = &connection_iter->daemon->id;
767 GNUNET_CRYPTO_hash_to_enc(&temppeer->hashPubKey, &peer_enc);
768 fprintf(temp_friend_handle, "%s\n", (char *)&peer_enc);
769 connection_iter = connection_iter->next;
772 fclose(temp_friend_handle);
774 GNUNET_CONFIGURATION_get_value_string(pg->peers[pg_iter].daemon->cfg, "PATHS", "SERVICEHOME", &temp_service_path);
776 if (temp_service_path == NULL)
778 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
779 _("No SERVICEHOME specified in peer configuration, can't copy friends file!\n"));
780 if (unlink(mytemp) != 0)
781 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", mytemp);
782 GNUNET_free (mytemp);
786 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
788 GNUNET_asprintf (&arg, "%s/friends", temp_service_path);
789 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv",
790 "mv", mytemp, arg, NULL);
792 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
793 _("Copying file with command cp %s %s\n"), mytemp, arg);
798 else /* Remote, scp the file to the correct place */
800 if (NULL != pg->peers[pg_iter].daemon->username)
801 GNUNET_asprintf (&arg, "%s@%s:%s/friends", pg->peers[pg_iter].daemon->username, pg->peers[pg_iter].daemon->hostname, temp_service_path);
803 GNUNET_asprintf (&arg, "%s:%s/friends", pg->peers[pg_iter].daemon->hostname, temp_service_path);
804 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp",
805 "scp", mytemp, arg, NULL);
808 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
809 _("Copying file with command scp %s %s\n"), mytemp, arg);
813 GNUNET_free (temp_service_path);
814 GNUNET_free (mytemp);
819 while ((count < max_wait) && (ret != GNUNET_OK))
822 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
825 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
826 _("Checking copy status of file %d\n"), pg_iter);
828 if (pidarr[pg_iter] != 0) /* Check for already completed! */
830 if (GNUNET_OS_process_status(pidarr[pg_iter], &type, &return_code) != GNUNET_OK)
834 else if ((type != GNUNET_OS_PROCESS_EXITED) || (return_code != 0))
842 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
843 _("File %d copied\n"), pg_iter);
849 if (ret == GNUNET_SYSERR)
862 * Connect the topology as specified by the PeerConnection's
863 * of each peer in the peer group
865 * @param pg the peer group we are dealing with
868 connect_topology (struct GNUNET_TESTING_PeerGroup *pg)
870 unsigned int pg_iter;
871 struct PeerConnection *connection_iter;
875 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
877 connection_iter = pg->peers[pg_iter].connected_peers;
878 while (connection_iter != NULL)
880 GNUNET_TESTING_daemons_connect (pg->peers[pg_iter].daemon,
881 connection_iter->daemon,
883 pg->notify_connection,
884 pg->notify_connection_cls);
885 connection_iter = connection_iter->next;
887 if (connect_count % 50 == 0)
890 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
891 _("Sleeping to give peers a chance to connect!\n"));
901 * Takes a peer group and attempts to create a topology based on the
902 * one specified in the configuration file. Returns the number of connections
903 * that will attempt to be created, but this will happen asynchronously(?) so
904 * the caller will have to keep track (via the callback) of whether or not
905 * the connection actually happened.
907 * @param pg the peer group struct representing the running peers
909 * @return the number of connections should be created by the topology, so the
910 * caller knows how many to wait for (if it so chooses)
914 GNUNET_TESTING_create_topology (struct GNUNET_TESTING_PeerGroup *pg)
916 unsigned long long topology_num;
920 GNUNET_assert (pg->notify_connection != NULL);
923 GNUNET_CONFIGURATION_get_value_number (pg->cfg, "testing", "topology",
926 switch (topology_num)
928 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
931 _("Creating clique topology (may take a bit!)\n"));
933 num_connections = create_clique (pg);
935 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
937 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
938 _("Creating small world (ring) topology (may take a bit!)\n"));
940 num_connections = create_small_world_ring (pg);
942 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
944 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
945 _("Creating small world (2d-torus) topology (may take a bit!)\n"));
947 num_connections = create_small_world (pg);
949 case GNUNET_TESTING_TOPOLOGY_RING:
951 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
952 _("Creating ring topology (may take a bit!)\n"));
954 num_connections = create_ring (pg);
956 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
958 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
959 _("Creating 2d torus topology (may take a bit!)\n"));
961 num_connections = create_2d_torus (pg);
963 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
965 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
966 _("Creating Erdos-Renyi topology (may take a bit!)\n"));
968 num_connections = create_erdos_renyi (pg);
970 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
972 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
973 _("Creating InterNAT topology (may take a bit!)\n"));
975 num_connections = create_nated_internet (pg);
977 case GNUNET_TESTING_TOPOLOGY_NONE:
984 if (num_connections < 1)
985 return GNUNET_SYSERR;
987 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "TESTING", "F2F"))
988 ret = create_and_copy_friend_files(pg);
989 if (ret == GNUNET_OK)
990 connect_topology(pg);
994 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
995 _("Failed during friend file copying!\n"));
997 return GNUNET_SYSERR;
1002 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1003 _("No topology specified, was one intended?\n"));
1006 return num_connections;
1010 * Start count gnunetd processes with the same set of transports and
1011 * applications. The port numbers (any option called "PORT") will be
1012 * adjusted to ensure that no two peers running on the same system
1013 * have the same port(s) in their respective configurations.
1015 * @param sched scheduler to use
1016 * @param cfg configuration template to use
1017 * @param total number of daemons to start
1018 * @param cb function to call on each daemon that was started
1019 * @param cb_cls closure for cb
1020 * @param connect_callback function to call each time two hosts are connected
1021 * @param connect_callback_cls closure for connect_callback
1022 * @param hostnames space-separated list of hostnames to use; can be NULL (to run
1023 * everything on localhost).
1024 * @return NULL on error, otherwise handle to control peer group
1026 struct GNUNET_TESTING_PeerGroup *
1027 GNUNET_TESTING_daemons_start (struct GNUNET_SCHEDULER_Handle *sched,
1028 const struct GNUNET_CONFIGURATION_Handle *cfg,
1030 GNUNET_TESTING_NotifyDaemonRunning cb,
1032 GNUNET_TESTING_NotifyConnection
1033 connect_callback, void *connect_callback_cls,
1034 const char *hostnames)
1036 struct GNUNET_TESTING_PeerGroup *pg;
1040 const char *hostname;
1041 char *baseservicehome;
1042 char *newservicehome;
1044 struct GNUNET_CONFIGURATION_Handle *pcfg;
1046 unsigned int hostcnt;
1054 pg = GNUNET_malloc (sizeof (struct GNUNET_TESTING_PeerGroup));
1058 pg->cb_cls = cb_cls;
1059 pg->notify_connection = connect_callback;
1060 pg->notify_connection_cls = connect_callback_cls;
1062 pg->peers = GNUNET_malloc (total * sizeof (struct PeerData));
1063 if (NULL != hostnames)
1066 /* skip leading spaces */
1067 while ((0 != *hostnames) && (isspace (*hostnames)))
1070 while ('\0' != *rpos)
1072 if (isspace (*rpos))
1076 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
1078 start = GNUNET_strdup (hostnames);
1080 while ('\0' != *pos)
1085 if (strlen (start) > 0)
1087 pg->hosts[off].minport = LOW_PORT;
1088 pg->hosts[off++].hostname = start;
1094 if (strlen (start) > 0)
1096 pg->hosts[off].minport = LOW_PORT;
1097 pg->hosts[off++].hostname = start;
1101 GNUNET_free (start);
1102 GNUNET_free (pg->hosts);
1106 minport = 0; /* make gcc happy */
1113 for (off = 0; off < total; off++)
1117 hostname = pg->hosts[off % hostcnt].hostname;
1118 pcfg = make_config (cfg, &pg->hosts[off % hostcnt].minport);
1123 pcfg = make_config (cfg, &minport);
1127 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1129 ("Could not create configuration for peer number %u on `%s'!\n"),
1130 off, hostname == NULL ? "localhost" : hostname);
1135 GNUNET_CONFIGURATION_get_value_string (pcfg, "PATHS", "SERVICEHOME",
1138 GNUNET_asprintf (&newservicehome,
1139 "%s/%d/", baseservicehome, off);
1140 GNUNET_free (baseservicehome);
1144 tmpdir = getenv ("TMPDIR");
1145 tmpdir = tmpdir ? tmpdir : "/tmp";
1146 GNUNET_asprintf (&newservicehome,
1149 "gnunet-testing-test-test", off);
1151 GNUNET_CONFIGURATION_set_value_string (pcfg,
1153 "SERVICEHOME", newservicehome);
1154 GNUNET_free (newservicehome);
1155 pg->peers[off].cfg = pcfg;
1156 pg->peers[off].daemon = GNUNET_TESTING_daemon_start (sched,
1160 if (NULL == pg->peers[off].daemon)
1161 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1162 _("Could not start peer number %u!\n"), off);
1168 * Get a daemon by number, so callers don't have to do nasty
1169 * offsetting operation.
1171 struct GNUNET_TESTING_Daemon *
1172 GNUNET_TESTING_daemon_get (struct GNUNET_TESTING_PeerGroup *pg, unsigned int position)
1174 if (position < pg->total)
1175 return pg->peers[position].daemon;
1181 * Shutdown all peers started in the given group.
1183 * @param pg handle to the peer group
1186 GNUNET_TESTING_daemons_stop (struct GNUNET_TESTING_PeerGroup *pg)
1189 struct PeerConnection *pos;
1190 struct PeerConnection *next;
1192 for (off = 0; off < pg->total; off++)
1194 /* FIXME: should we wait for our
1195 continuations to be called here? This
1196 would require us to take a continuation
1199 if (NULL != pg->peers[off].daemon)
1200 GNUNET_TESTING_daemon_stop (pg->peers[off].daemon, NULL, NULL);
1201 if (NULL != pg->peers[off].cfg)
1202 GNUNET_CONFIGURATION_destroy (pg->peers[off].cfg);
1204 pos = pg->peers[off].connected_peers;
1213 GNUNET_free (pg->peers);
1214 if (NULL != pg->hosts)
1216 GNUNET_free (pg->hosts[0].hostname);
1217 GNUNET_free (pg->hosts);
1223 /* end of testing_group.c */