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)
317 logNModifier = atof(p_string);
319 logNModifier = 0.5; /* FIXME: default modifier? */
321 GNUNET_free_non_null(p_string);
323 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PERCENTAGE", &p_string);
324 if (p_string != NULL)
325 percentage = atof(p_string);
327 percentage = 0.5; /* FIXME: default percentage? */
329 GNUNET_free_non_null(p_string);
331 natLog = log (pg->total);
332 connsPerPeer = ceil (natLog * logNModifier);
334 if (connsPerPeer % 2 == 1)
337 time = GNUNET_TIME_absolute_get ();
338 srand ((unsigned int) time.value);
339 smallWorldConnections = 0;
340 connect_attempts = 0;
341 for (i = 0; i < pg->total; i++)
344 max = i + connsPerPeer / 2;
345 min = i - connsPerPeer / 2;
347 if (max > pg->total - 1)
349 max = max - pg->total;
355 min = pg->total - 1 + min;
359 for (j = 0; j < connsPerPeer / 2; j++)
361 random = ((double) rand () / RAND_MAX);
362 if (random < percentage)
364 /* Connect to uniformly selected random peer */
366 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
368 while ((((randomPeer < max) && (randomPeer > min))
369 && (useAnd == 0)) || (((randomPeer > min)
370 || (randomPeer < max))
374 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
377 smallWorldConnections +=
378 add_connections (pg, i, randomPeer);
382 nodeToConnect = i + j + 1;
383 if (nodeToConnect > pg->total - 1)
385 nodeToConnect = nodeToConnect - pg->total;
388 add_connections (pg, i, nodeToConnect);
394 connect_attempts += smallWorldConnections;
401 create_nated_internet (struct GNUNET_TESTING_PeerGroup *pg)
403 unsigned int outer_count, inner_count;
405 int connect_attempts;
406 double nat_percentage;
409 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "NATPERCENTAGE", &p_string);
410 if (p_string != NULL)
411 nat_percentage = atof(p_string);
413 nat_percentage = 0.0; /* FIXME: default modifier? */
415 GNUNET_free_non_null(p_string);
417 cutoff = (unsigned int) (nat_percentage * pg->total);
419 connect_attempts = 0;
421 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
423 for (inner_count = outer_count + 1; inner_count < pg->total;
426 if ((outer_count > cutoff) || (inner_count > cutoff))
429 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
430 "Connecting peer %d to peer %d\n",
431 outer_count, inner_count);
433 connect_attempts += add_connections(pg, outer_count, inner_count);
438 return connect_attempts;
445 create_small_world (struct GNUNET_TESTING_PeerGroup *pg)
447 unsigned int i, j, k;
451 unsigned int toggle = 1;
452 unsigned int nodeToConnect;
454 unsigned int node1Row;
455 unsigned int node1Col;
456 unsigned int node2Row;
457 unsigned int node2Col;
458 unsigned int distance;
459 double probability, random, percentage;
460 unsigned int smallWorldConnections;
462 int connect_attempts;
463 square = floor (sqrt (pg->total));
467 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PERCENTAGE", &p_string);
468 if (p_string != NULL)
469 percentage = atof(p_string);
471 percentage = 0.5; /* FIXME: default percentage? */
473 GNUNET_free_non_null(p_string);
475 GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PROBABILITY", &p_string);
476 if (p_string != NULL)
477 probability = atof(p_string);
479 probability = 0.5; /* FIXME: default probability? */
481 GNUNET_free_non_null(p_string);
483 if (square * square != pg->total)
485 while (rows * cols < pg->total)
496 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
497 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
501 connect_attempts = 0;
502 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
503 * to the node to its right and above. Once this is over, we'll have our torus!
504 * Special case for the last node (if the rows and columns are not equal), connect
505 * to the first in the row to maintain topology.
507 for (i = 0; i < pg->total; i++)
509 /* First connect to the node to the right */
510 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
511 nodeToConnect = i + 1;
512 else if (i + 1 == pg->total)
513 nodeToConnect = rows * cols - cols;
515 nodeToConnect = i - cols + 1;
517 connect_attempts += add_connections (pg, i, nodeToConnect);
520 nodeToConnect = (rows * cols) - cols + i;
522 nodeToConnect = i - cols;
524 if (nodeToConnect < pg->total)
525 connect_attempts += add_connections (pg, i, nodeToConnect);
527 natLog = log (pg->total);
529 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
530 _("natural log of %d is %d, will run %d iterations\n"),
531 pg->total, natLog, (int) (natLog * percentage));
532 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Total connections added thus far: %u!\n"), connect_attempts);
534 smallWorldConnections = 0;
535 for (i = 0; i < (int) (natLog * percentage); i++)
537 for (j = 0; j < pg->total; j++)
539 /* Determine the row and column of node at position j on the 2d torus */
541 node1Col = j - (node1Row * cols);
542 for (k = 0; k < pg->total; k++)
544 /* Determine the row and column of node at position k on the 2d torus */
546 node2Col = k - (node2Row * cols);
547 /* Simple Cartesian distance */
548 distance = abs (node1Row - node2Row) + abs (node1Col - node2Col);
551 /* Calculate probability as 1 over the square of the distance */
552 probability = 1.0 / (distance * distance);
553 /* Choose a random, divide by RAND_MAX to get a number between 0 and 1 */
554 random = ((double) rand () / RAND_MAX);
555 /* If random < probability, then connect the two nodes */
556 if (random < probability)
557 smallWorldConnections += add_connections (pg, j, k);
563 connect_attempts += smallWorldConnections;
565 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
566 _("Total connections added for small world: %d!\n"),
567 smallWorldConnections);
575 create_erdos_renyi (struct GNUNET_TESTING_PeerGroup *pg)
578 unsigned int outer_count;
579 unsigned int inner_count;
580 int connect_attempts;
583 connect_attempts = 0;
585 probability = GNUNET_CONFIGURATION_get_value_string(pg->cfg, "TESTING", "PROBABILITY", &p_string);
586 if (p_string != NULL)
588 probability = atof(p_string);
592 probability = 0.0; /* FIXME: default probability? */
594 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
596 for (inner_count = outer_count + 1; inner_count < pg->total;
599 temp_rand = ((double) RANDOM () / RAND_MAX);
601 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
602 _("rand is %f probability is %f\n"), temp_rand,
605 if (temp_rand < probability)
607 connect_attempts += add_connections (pg, outer_count, inner_count);
612 return connect_attempts;
616 create_2d_torus (struct GNUNET_TESTING_PeerGroup *pg)
622 unsigned int toggle = 1;
623 unsigned int nodeToConnect;
624 int connect_attempts;
626 connect_attempts = 0;
628 square = floor (sqrt (pg->total));
632 if (square * square != pg->total)
634 while (rows * cols < pg->total)
645 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
646 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
649 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
650 * to the node to its right and above. Once this is over, we'll have our torus!
651 * Special case for the last node (if the rows and columns are not equal), connect
652 * to the first in the row to maintain topology.
654 for (i = 0; i < pg->total; i++)
656 /* First connect to the node to the right */
657 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
658 nodeToConnect = i + 1;
659 else if (i + 1 == pg->total)
660 nodeToConnect = rows * cols - cols;
662 nodeToConnect = i - cols + 1;
664 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
665 "Connecting peer %d to peer %d\n",
668 connect_attempts += add_connections(pg, i, nodeToConnect);
670 /* Second connect to the node immediately above */
672 nodeToConnect = (rows * cols) - cols + i;
674 nodeToConnect = i - cols;
676 if (nodeToConnect < pg->total)
679 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
680 "Connecting peer %d to peer %d\n",
683 connect_attempts += add_connections(pg, i, nodeToConnect);
688 return connect_attempts;
694 create_clique (struct GNUNET_TESTING_PeerGroup *pg)
696 unsigned int outer_count;
697 unsigned int inner_count;
698 int connect_attempts;
700 connect_attempts = 0;
702 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
704 for (inner_count = outer_count + 1; inner_count < pg->total;
708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
709 "Connecting peer %d to peer %d\n",
710 outer_count, inner_count);
712 connect_attempts += add_connections(pg, outer_count, inner_count);
716 return connect_attempts;
721 create_ring (struct GNUNET_TESTING_PeerGroup *pg)
724 int connect_attempts;
726 connect_attempts = 0;
728 /* Connect each peer to the next highest numbered peer */
729 for (count = 0; count < pg->total - 1; count++)
732 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
733 "Connecting peer %d to peer %d\n",
736 connect_attempts += add_connections(pg, count, count + 1);
739 /* Connect the last peer to the first peer */
740 connect_attempts += add_connections(pg, pg->total - 1, 0);
742 return connect_attempts;
747 * Create the friend files based on the PeerConnection's
748 * of each peer in the peer group, and copy the files
749 * to the appropriate place
751 * @param pg the peer group we are dealing with
754 create_and_copy_friend_files (struct GNUNET_TESTING_PeerGroup *pg)
756 FILE *temp_friend_handle;
757 unsigned int pg_iter;
758 struct PeerConnection *connection_iter;
759 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
760 char *temp_service_path;
763 struct GNUNET_PeerIdentity *temppeer;
766 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
768 mytemp = GNUNET_DISK_mktemp("friends");
769 temp_friend_handle = fopen (mytemp, "wt");
770 connection_iter = pg->peers[pg_iter].connected_peers;
771 while (connection_iter != NULL)
773 temppeer = &connection_iter->daemon->id;
774 GNUNET_CRYPTO_hash_to_enc(&temppeer->hashPubKey, &peer_enc);
775 fprintf(temp_friend_handle, "%s\n", (char *)&peer_enc);
776 connection_iter = connection_iter->next;
779 fclose(temp_friend_handle);
781 GNUNET_CONFIGURATION_get_value_string(pg->peers[pg_iter].daemon->cfg, "PATHS", "SERVICEHOME", &temp_service_path);
783 if (temp_service_path == NULL)
785 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
786 _("No SERVICEHOME specified in peer configuration, can't copy friends file!\n"));
787 fclose(temp_friend_handle);
792 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
794 GNUNET_asprintf (&arg, "%s/friends", temp_service_path);
795 pid = GNUNET_OS_start_process ("mv",
796 "mv", mytemp, arg, NULL);
798 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
799 _("Copying file with command cp %s %s\n"), mytemp, arg);
803 else /* Remote, scp the file to the correct place */
805 if (NULL != pg->peers[pg_iter].daemon->username)
806 GNUNET_asprintf (&arg, "%s@%s:%s/friends", pg->peers[pg_iter].daemon->username, pg->peers[pg_iter].daemon->hostname, temp_service_path);
808 GNUNET_asprintf (&arg, "%s:%s/friends", pg->peers[pg_iter].daemon->hostname, temp_service_path);
809 pid = GNUNET_OS_start_process ("scp",
810 "scp", mytemp, arg, NULL);
812 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
813 _("Copying file with command scp %s %s\n"), mytemp, arg);
824 * Connect the topology as specified by the PeerConnection's
825 * of each peer in the peer group
827 * @param pg the peer group we are dealing with
830 connect_topology (struct GNUNET_TESTING_PeerGroup *pg)
832 unsigned int pg_iter;
833 struct PeerConnection *connection_iter;
835 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
837 connection_iter = pg->peers[pg_iter].connected_peers;
838 while (connection_iter != NULL)
840 GNUNET_TESTING_daemons_connect (pg->peers[pg_iter].daemon,
841 connection_iter->daemon,
843 pg->notify_connection,
844 pg->notify_connection_cls);
845 connection_iter = connection_iter->next;
852 * Takes a peer group and attempts to create a topology based on the
853 * one specified in the configuration file. Returns the number of connections
854 * that will attempt to be created, but this will happen asynchronously(?) so
855 * the caller will have to keep track (via the callback) of whether or not
856 * the connection actually happened.
858 * @param pg the peer group struct representing the running peers
862 GNUNET_TESTING_create_topology (struct GNUNET_TESTING_PeerGroup *pg)
864 unsigned long long topology_num;
867 GNUNET_assert (pg->notify_connection != NULL);
870 GNUNET_CONFIGURATION_get_value_number (pg->cfg, "testing", "topology",
873 switch (topology_num)
875 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
877 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
878 _("Creating clique topology (may take a bit!)\n"));
880 ret = create_clique (pg);
882 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
884 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
885 _("Creating small world (ring) topology (may take a bit!)\n"));
887 ret = create_small_world_ring (pg);
889 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
891 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
892 _("Creating small world (2d-torus) topology (may take a bit!)\n"));
894 ret = create_small_world (pg);
896 case GNUNET_TESTING_TOPOLOGY_RING:
898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
899 _("Creating ring topology (may take a bit!)\n"));
901 ret = create_ring (pg);
903 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
905 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
906 _("Creating 2d torus topology (may take a bit!)\n"));
908 ret = create_2d_torus (pg);
910 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
912 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
913 _("Creating Erdos-Renyi topology (may take a bit!)\n"));
915 ret = create_erdos_renyi (pg);
917 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
919 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
920 _("Creating InterNAT topology (may take a bit!)\n"));
922 ret = create_nated_internet (pg);
924 case GNUNET_TESTING_TOPOLOGY_NONE:
932 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "TESTING", "F2F"))
933 create_and_copy_friend_files(pg);
935 connect_topology(pg);
939 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
940 _("No topology specified, was one intended?\n"));
947 * Start count gnunetd processes with the same set of transports and
948 * applications. The port numbers (any option called "PORT") will be
949 * adjusted to ensure that no two peers running on the same system
950 * have the same port(s) in their respective configurations.
952 * @param sched scheduler to use
953 * @param cfg configuration template to use
954 * @param total number of daemons to start
955 * @param cb function to call on each daemon that was started
956 * @param cb_cls closure for cb
957 * @param connect_callback function to call each time two hosts are connected
958 * @param connect_callback_cls closure for connect_callback
959 * @param hostnames space-separated list of hostnames to use; can be NULL (to run
960 * everything on localhost).
961 * @return NULL on error, otherwise handle to control peer group
963 struct GNUNET_TESTING_PeerGroup *
964 GNUNET_TESTING_daemons_start (struct GNUNET_SCHEDULER_Handle *sched,
965 const struct GNUNET_CONFIGURATION_Handle *cfg,
967 GNUNET_TESTING_NotifyDaemonRunning cb,
969 GNUNET_TESTING_NotifyConnection
970 connect_callback, void *connect_callback_cls,
971 const char *hostnames)
973 struct GNUNET_TESTING_PeerGroup *pg;
977 const char *hostname;
978 char *baseservicehome;
979 char *newservicehome;
981 struct GNUNET_CONFIGURATION_Handle *pcfg;
983 unsigned int hostcnt;
992 pg = GNUNET_malloc (sizeof (struct GNUNET_TESTING_PeerGroup));
997 pg->notify_connection = connect_callback;
998 pg->notify_connection_cls = connect_callback_cls;
1000 pg->peers = GNUNET_malloc (total * sizeof (struct PeerData));
1001 if (NULL != hostnames)
1004 /* skip leading spaces */
1005 while ((0 != *hostnames) && (isspace (*hostnames)))
1008 while ('\0' != *rpos)
1010 if (isspace (*rpos))
1014 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
1016 start = GNUNET_strdup (hostnames);
1018 while ('\0' != *pos)
1023 if (strlen (start) > 0)
1025 pg->hosts[off].minport = LOW_PORT;
1026 pg->hosts[off++].hostname = start;
1032 if (strlen (start) > 0)
1034 pg->hosts[off].minport = LOW_PORT;
1035 pg->hosts[off++].hostname = start;
1039 GNUNET_free (start);
1040 GNUNET_free (pg->hosts);
1044 minport = 0; /* make gcc happy */
1051 for (off = 0; off < total; off++)
1055 hostname = pg->hosts[off % hostcnt].hostname;
1056 pcfg = make_config (cfg, &pg->hosts[off % hostcnt].minport);
1061 pcfg = make_config (cfg, &minport);
1065 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1067 ("Could not create configuration for peer number %u on `%s'!\n"),
1068 off, hostname == NULL ? "localhost" : hostname);
1073 GNUNET_CONFIGURATION_get_value_string (pcfg, "PATHS", "SERVICEHOME",
1076 tempsize = snprintf (NULL, 0, "%s/%d/", baseservicehome, off) + 1;
1077 newservicehome = GNUNET_malloc (tempsize);
1078 snprintf (newservicehome, tempsize, "%s/%d/", baseservicehome, off);
1082 tmpdir = getenv ("TMPDIR");
1083 tmpdir = tmpdir ? tmpdir : "/tmp";
1084 tempsize = snprintf (NULL, 0, "%s/%s/%d/", tmpdir, "gnunet-testing-test-test", off) + 1;
1085 newservicehome = GNUNET_malloc (tempsize);
1086 snprintf (newservicehome, tempsize, "%s/%d/",
1087 "/tmp/gnunet-testing-test-test", off);
1089 GNUNET_CONFIGURATION_set_value_string (pcfg,
1091 "SERVICEHOME", newservicehome);
1093 pg->peers[off].cfg = pcfg;
1094 pg->peers[off].daemon = GNUNET_TESTING_daemon_start (sched,
1098 if (NULL == pg->peers[off].daemon)
1099 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1100 _("Could not start peer number %u!\n"), off);
1106 * Get a daemon by number, so callers don't have to do nasty
1107 * offsetting operation.
1109 struct GNUNET_TESTING_Daemon *
1110 GNUNET_TESTING_daemon_get (struct GNUNET_TESTING_PeerGroup *pg, unsigned int position)
1112 if (position < pg->total)
1113 return pg->peers[position].daemon;
1119 * Shutdown all peers started in the given group.
1121 * @param pg handle to the peer group
1124 GNUNET_TESTING_daemons_stop (struct GNUNET_TESTING_PeerGroup *pg)
1128 for (off = 0; off < pg->total; off++)
1130 /* FIXME: should we wait for our
1131 continuations to be called here? This
1132 would require us to take a continuation
1135 if (NULL != pg->peers[off].daemon)
1136 GNUNET_TESTING_daemon_stop (pg->peers[off].daemon, NULL, NULL);
1137 if (NULL != pg->peers[off].cfg)
1138 GNUNET_CONFIGURATION_destroy (pg->peers[off].cfg);
1140 GNUNET_free (pg->peers);
1141 if (NULL != pg->hosts)
1143 GNUNET_free (pg->hosts[0].hostname);
1144 GNUNET_free (pg->hosts);
1150 /* end of testing_group.c */