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 3, or (at your
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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 Nathan Evans
25 * @author Christian Grothoff
29 #include "gnunet_arm_service.h"
30 #include "gnunet_testing_lib.h"
31 #include "gnunet_core_service.h"
33 #define VERBOSE_TESTING GNUNET_NO
35 #define DEBUG_CHURN GNUNET_NO
38 * Lowest port used for GNUnet testing. Should be high enough to not
39 * conflict with other applications running on the hosts but be low
40 * enough to not conflict with client-ports (typically starting around
43 #define LOW_PORT 10000
46 * Highest port used for GNUnet testing. Should be low enough to not
47 * conflict with the port range for "local" ports (client apps; see
48 * /proc/sys/net/ipv4/ip_local_port_range on Linux for example).
50 #define HIGH_PORT 56000
52 #define MAX_OUTSTANDING_CONNECTIONS 10
54 #define MAX_CONCURRENT_HOSTKEYS 10
56 #define MAX_CONCURRENT_STARTING 10
58 #define MAX_CONCURRENT_SHUTDOWN 10
60 #define CONNECT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 300)
62 #define CONNECT_ATTEMPTS 8
65 * Prototype of a function called whenever two peers would be connected
66 * in a certain topology.
68 typedef int (*GNUNET_TESTING_ConnectionProcessor)(struct GNUNET_TESTING_PeerGroup *pg,
74 * Context for handling churning a peer group
79 * Callback used to notify of churning finished
81 GNUNET_TESTING_NotifyCompletion cb;
84 * Closure for callback
89 * Number of peers that still need to be started
91 unsigned int num_to_start;
94 * Number of peers that still need to be stopped
96 unsigned int num_to_stop;
99 * Number of peers that failed to start
101 unsigned int num_failed_start;
104 * Number of peers that failed to stop
106 unsigned int num_failed_stop;
109 struct RestartContext
112 * The group of peers being restarted
114 struct GNUNET_TESTING_PeerGroup *peer_group;
117 * How many peers have been restarted thus far
119 unsigned int peers_restarted;
122 * How many peers got an error when restarting
124 unsigned int peers_restart_failed;
127 * The function to call once all peers have been restarted
129 GNUNET_TESTING_NotifyCompletion callback;
132 * Closure for callback function
139 struct ShutdownContext
142 * Total peers to wait for
144 unsigned int total_peers;
147 * Number of peers successfully shut down
149 unsigned int peers_down;
152 * Number of peers failed to shut down
154 unsigned int peers_failed;
157 * Number of peers we have started shutting
158 * down. If too many, wait on them.
160 unsigned int outstanding;
163 * Timeout for shutdown.
165 struct GNUNET_TIME_Relative timeout;
168 * Callback to call when all peers either
169 * shutdown or failed to shutdown
171 GNUNET_TESTING_NotifyCompletion cb;
179 struct CreateTopologyContext
183 * Function to call with number of connections
185 GNUNET_TESTING_NotifyConnections cont;
188 * Closure for connection notification
194 struct PeerConnection
199 struct PeerConnection *next;
202 * Pointer to daemon handle
204 struct GNUNET_TESTING_Daemon *daemon;
209 struct InternalStartContext
212 * Pointer to peerdata
214 struct PeerData *peer;
217 * Timeout for peer startup
219 struct GNUNET_TIME_Relative timeout;
222 * Client callback for hostkey notification
224 GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback;
227 * Closure for hostkey_callback
232 * Client callback for peer start notification
234 GNUNET_TESTING_NotifyDaemonRunning start_cb;
242 * Hostname, where to start the peer
244 const char *hostname;
248 * Data we keep per peer.
253 * (Initial) configuration of the host.
254 * (initial because clients could change
255 * it and we would not know about those
258 struct GNUNET_CONFIGURATION_Handle *cfg;
261 * Handle for controlling the daemon.
263 struct GNUNET_TESTING_Daemon *daemon;
266 * The peergroup this peer belongs to.
268 struct GNUNET_TESTING_PeerGroup *pg;
271 * Hash map of allowed peer connections (F2F created topology)
273 struct GNUNET_CONTAINER_MultiHashMap *allowed_peers;
276 * Hash map of blacklisted peers
278 struct GNUNET_CONTAINER_MultiHashMap *blacklisted_peers;
281 * Hash map of peer connections
283 struct GNUNET_CONTAINER_MultiHashMap *connect_peers;
286 * Temporary hash map of peer connections
288 struct GNUNET_CONTAINER_MultiHashMap *connect_peers_working_set;
291 * Temporary variable for topology creation, should be reset before
292 * creating any topology so the count is valid once finished.
297 * Context to keep track of peers being started, to
298 * stagger hostkey generation and peer startup.
300 struct InternalStartContext internal_context;
305 * Data we keep per host.
315 * Lowest port that we have not yet used
321 struct TopologyIterateContext
324 * Callback for notifying of two connected peers.
326 GNUNET_TESTING_NotifyTopology topology_cb;
329 * Closure for topology_cb
334 * Number of peers currently connected to.
336 unsigned int connected;
339 * Number of peers we have finished iterating.
341 unsigned int completed;
344 * Number of peers total.
349 struct StatsIterateContext
352 * Handle to the statistics service.
354 struct GNUNET_STATISTICS_Handle *stats_handle;
357 * Handle for getting statistics.
359 struct GNUNET_STATISTICS_GetHandle *stats_get_handle;
362 * Continuation to call once all stats information has been retrieved.
364 GNUNET_STATISTICS_Callback cont;
367 * Proc function to call on each value received.
369 GNUNET_TESTING_STATISTICS_Iterator proc;
372 * Closure for topology_cb
377 * Number of peers currently connected to.
379 unsigned int connected;
382 * Number of peers we have finished iterating.
384 unsigned int completed;
387 * Number of peers total.
395 struct GNUNET_TESTING_Daemon *daemon;
399 * Handle to a group of GNUnet peers.
401 struct GNUNET_TESTING_PeerGroup
406 struct GNUNET_SCHEDULER_Handle *sched;
409 * Configuration template.
411 const struct GNUNET_CONFIGURATION_Handle *cfg;
414 * Function to call on each started daemon.
416 //GNUNET_TESTING_NotifyDaemonRunning cb;
424 * Function to call on each topology connection created
426 GNUNET_TESTING_NotifyConnection notify_connection;
429 * Callback for notify_connection
431 void *notify_connection_cls;
434 * NULL-terminated array of information about
437 struct HostData *hosts;
440 * Array of "total" peers.
442 struct PeerData *peers;
445 * Number of peers in this group.
450 * At what time should we fail the peer startup process?
452 struct GNUNET_TIME_Absolute max_timeout;
455 * How many peers are being started right now?
457 unsigned int starting;
460 * How many peers have already been started?
462 unsigned int started;
467 struct GNUNET_CONFIGURATION_Handle *ret;
468 const char *hostname;
474 struct ConnectContext
476 struct GNUNET_TESTING_Daemon *first;
478 struct GNUNET_TESTING_Daemon *second;
480 struct GNUNET_TESTING_PeerGroup *pg;
484 * Convert unique ID to hash code.
486 * @param uid unique ID to convert
487 * @param hash set to uid (extended with zeros)
490 hash_from_uid (uint32_t uid,
491 GNUNET_HashCode *hash)
493 memset (hash, 0, sizeof(GNUNET_HashCode));
494 *((uint32_t*)hash) = uid;
498 * Convert hash code to unique ID.
500 * @param uid unique ID to convert
501 * @param hash set to uid (extended with zeros)
504 uid_from_hash (const GNUNET_HashCode *hash, uint32_t *uid)
506 memcpy (uid, hash, sizeof(uint32_t));
510 * Number of connects we are waiting on, allows us to rate limit
513 static int outstanding_connects;
516 * Get a topology from a string input.
518 * @param topology where to write the retrieved topology
519 * @param topology_string The string to attempt to
520 * get a configuration value from
521 * @return GNUNET_YES if topology string matched a
522 * known topology, GNUNET_NO if not
525 GNUNET_TESTING_topology_get(enum GNUNET_TESTING_Topology *topology, char * topology_string)
528 * Strings representing topologies in enum
530 static const char * topology_strings[] =
533 * A clique (everyone connected to everyone else).
538 * Small-world network (2d torus plus random links).
543 * Small-world network (ring plus random links).
563 * Certain percentage of peers are unable to communicate directly
564 * replicating NAT conditions
569 * Scale free topology.
574 * Straight line topology.
579 * All peers are disconnected.
587 if (topology_string == NULL)
589 while (topology_strings[curr] != NULL)
591 if (strcasecmp(topology_strings[curr], topology_string) == 0)
598 *topology = GNUNET_TESTING_TOPOLOGY_NONE;
604 * Get connect topology option from string input.
606 * @param topology_option where to write the retrieved topology
607 * @param topology_string The string to attempt to
608 * get a configuration value from
609 * @return GNUNET_YES if string matched a known
610 * topology option, GNUNET_NO if not
613 GNUNET_TESTING_topology_option_get (enum GNUNET_TESTING_TopologyOption *topology_option,
614 char * topology_string)
617 * Options for connecting a topology as strings.
619 static const char * topology_option_strings[] =
622 * Try to connect all peers specified in the topology.
627 * Choose a random subset of connections to create.
629 "CONNECT_RANDOM_SUBSET",
632 * Create at least X connections for each peer.
637 * Using a depth first search, create one connection
638 * per peer. If any are missed (graph disconnected)
639 * start over at those peers until all have at least one
645 * No options specified.
653 if (topology_string == NULL)
655 while (NULL != topology_option_strings[curr])
657 if (strcasecmp(topology_option_strings[curr], topology_string) == 0)
659 *topology_option = curr;
664 *topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_NONE;
669 * Function to iterate over options. Copies
670 * the options to the target configuration,
671 * updating PORT values as needed.
674 * @param section name of the section
675 * @param option name of the option
676 * @param value value of the option
679 update_config (void *cls,
680 const char *section, const char *option, const char *value)
682 struct UpdateContext *ctx = cls;
687 if ((0 == strcmp (option, "PORT")) && (1 == sscanf (value, "%u", &ival)))
691 GNUNET_snprintf (cval, sizeof (cval), "%u", ctx->nport++);
696 if (0 == strcmp (option, "UNIXPATH"))
698 GNUNET_snprintf (uval,
700 "/tmp/test-service-%s-%u",
706 if ((0 == strcmp (option, "HOSTNAME")) && (ctx->hostname != NULL))
708 value = ctx->hostname;
711 GNUNET_CONFIGURATION_set_value_string (ctx->ret, section, option, value);
716 * Create a new configuration using the given configuration
717 * as a template; however, each PORT in the existing cfg
718 * must be renumbered by incrementing "*port". If we run
719 * out of "*port" numbers, return NULL.
721 * @param cfg template configuration
722 * @param port port numbers to use, update to reflect
723 * port numbers that were used
724 * @param upnum number to make unix domain socket names unique
725 * @param hostname hostname of the controlling host, to allow control connections from
727 * @return new configuration, NULL on error
729 static struct GNUNET_CONFIGURATION_Handle *
730 make_config (const struct GNUNET_CONFIGURATION_Handle *cfg,
733 const char *hostname)
735 struct UpdateContext uc;
743 uc.ret = GNUNET_CONFIGURATION_create ();
744 uc.hostname = hostname;
746 GNUNET_CONFIGURATION_iterate (cfg, &update_config, &uc);
747 if (uc.nport >= HIGH_PORT)
750 GNUNET_CONFIGURATION_destroy (uc.ret);
754 if (GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "control_host", &control_host) == GNUNET_OK)
756 if (hostname != NULL)
757 GNUNET_asprintf(&allowed_hosts, "%s; 127.0.0.1; %s;", control_host, hostname);
759 GNUNET_asprintf(&allowed_hosts, "%s; 127.0.0.1;", control_host);
761 GNUNET_CONFIGURATION_set_value_string(uc.ret, "core", "ACCEPT_FROM", allowed_hosts);
762 GNUNET_CONFIGURATION_set_value_string(uc.ret, "transport", "ACCEPT_FROM", allowed_hosts);
763 GNUNET_CONFIGURATION_set_value_string(uc.ret, "dht", "ACCEPT_FROM", allowed_hosts);
764 GNUNET_CONFIGURATION_set_value_string(uc.ret, "statistics", "ACCEPT_FROM", allowed_hosts);
765 GNUNET_free_non_null(control_host);
766 GNUNET_free(allowed_hosts);
770 /* arm needs to know to allow connections from the host on which it is running,
771 * otherwise gnunet-arm is unable to connect to it in some instances */
772 if (hostname != NULL)
774 GNUNET_asprintf(&allowed_hosts, "%s; 127.0.0.1;", hostname);
775 GNUNET_CONFIGURATION_set_value_string(uc.ret, "transport-udp", "BINDTO", hostname);
776 GNUNET_CONFIGURATION_set_value_string(uc.ret, "transport-tcp", "BINDTO", hostname);
777 GNUNET_CONFIGURATION_set_value_string(uc.ret, "arm", "ACCEPT_FROM", allowed_hosts);
778 GNUNET_free(allowed_hosts);
782 GNUNET_CONFIGURATION_set_value_string(uc.ret, "transport-tcp", "BINDTO", "127.0.0.1");
783 GNUNET_CONFIGURATION_set_value_string(uc.ret, "transport-udp", "BINDTO", "127.0.0.1");
786 *port = (uint16_t) uc.nport;
793 * Add entries to the peers connect list
795 * @param pg the peer group we are working with
796 * @param first index of the first peer
797 * @param second index of the second peer
799 * @return the number of connections added
800 * technically should only be 0 or 2
804 add_actual_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first, unsigned int second)
810 GNUNET_HashCode hash_first;
811 GNUNET_HashCode hash_second;
813 hash_from_uid(first, &hash_first);
814 hash_from_uid(second, &hash_second);
816 add_first = GNUNET_NO;
817 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[first].connect_peers, &hash_second))
819 add_first = GNUNET_YES;
822 add_second = GNUNET_NO;
823 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[second].connect_peers, &hash_first))
825 add_second = GNUNET_YES;
831 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[first].connect_peers, &hash_second, pg->peers[second].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
832 pg->peers[first].num_connections++;
838 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[second].connect_peers, &hash_first, pg->peers[first].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
839 pg->peers[second].num_connections++;
848 * Add entries to the peers allowed connections list
850 * @param pg the peer group we are working with
851 * @param first index of the first peer
852 * @param second index of the second peer
854 * @return the number of connections added (can be 0, 1 or 2)
855 * technically should only be 0 or 2, but the small price
856 * of iterating over the lists (hashmaps in the future)
857 * for being sure doesn't bother me!
861 add_allowed_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first, unsigned int second)
865 struct PeerConnection *first_iter;
866 struct PeerConnection *second_iter;
867 struct PeerConnection *new_first;
868 struct PeerConnection *new_second;
873 GNUNET_HashCode hash_first;
874 GNUNET_HashCode hash_second;
876 hash_from_uid(first, &hash_first);
877 hash_from_uid(second, &hash_second);
879 add_first = GNUNET_NO;
880 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[first].allowed_peers, &hash_second))
882 add_first = GNUNET_YES;
885 add_second = GNUNET_NO;
886 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[second].allowed_peers, &hash_first))
888 add_second = GNUNET_YES;
891 first_iter = pg->peers[first].connected_peers;
892 while (first_iter != NULL)
894 if (first_iter->daemon == pg->peers[second].daemon)
895 add_first = GNUNET_NO;
896 first_iter = first_iter->next;
899 second_iter = pg->peers[second].connected_peers;
900 add_second = GNUNET_YES;
901 while (second_iter != NULL)
903 if (second_iter->daemon == pg->peers[first].daemon)
904 add_second = GNUNET_NO;
905 second_iter = second_iter->next;
912 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[first].allowed_peers, &hash_second, pg->peers[second].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
914 new_first = GNUNET_malloc(sizeof(struct PeerConnection));
915 new_first->daemon = pg->peers[second].daemon;
916 new_first->next = pg->peers[first].connected_peers;
917 pg->peers[first].connected_peers = new_first;
919 pg->peers[first].num_connections++;
925 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[second].allowed_peers, &hash_first, pg->peers[first].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
927 new_second = GNUNET_malloc(sizeof(struct PeerConnection));
928 new_second->daemon = pg->peers[first].daemon;
929 new_second->next = pg->peers[second].connected_peers;
930 pg->peers[second].connected_peers = new_second;
931 pg->peers[first].num_connections++;
933 pg->peers[second].num_connections++;
941 * Add entries to the peers blacklisted list
943 * @param pg the peer group we are working with
944 * @param first index of the first peer
945 * @param second index of the second peer
947 * @return the number of connections added (can be 0, 1 or 2)
951 blacklist_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first, unsigned int second)
956 GNUNET_HashCode hash_first;
957 GNUNET_HashCode hash_second;
959 hash_from_uid(first, &hash_first);
960 hash_from_uid(second, &hash_second);
962 add_first = GNUNET_NO;
963 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[first].blacklisted_peers, &hash_second))
965 add_first = GNUNET_YES;
968 add_second = GNUNET_NO;
969 if (GNUNET_NO == GNUNET_CONTAINER_multihashmap_contains(pg->peers[second].blacklisted_peers, &hash_first))
971 add_second = GNUNET_YES;
977 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[first].blacklisted_peers, &hash_second, pg->peers[second].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
978 pg->peers[first].num_connections++;
984 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(pg->peers[second].blacklisted_peers, &hash_first, pg->peers[first].daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
985 pg->peers[second].num_connections++;
993 * Remove entries from the peers blacklisted list
995 * @param pg the peer group we are working with
996 * @param first index of the first peer
997 * @param second index of the second peer
999 * @return the number of connections removed (can be 0, 1 or 2)
1003 unblacklist_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first, unsigned int second)
1008 GNUNET_HashCode hash_first;
1009 GNUNET_HashCode hash_second;
1011 hash_from_uid(first, &hash_first);
1012 hash_from_uid(second, &hash_second);
1014 remove_first = GNUNET_CONTAINER_multihashmap_contains(pg->peers[first].blacklisted_peers, &hash_second);
1015 remove_second = GNUNET_CONTAINER_multihashmap_contains(pg->peers[second].blacklisted_peers, &hash_first);
1020 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(pg->peers[first].blacklisted_peers, &hash_second, pg->peers[second].daemon));
1026 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(pg->peers[second].blacklisted_peers, &hash_first, pg->peers[first].daemon));
1034 * Scale free network construction as described in:
1036 * "Emergence of Scaling in Random Networks." Science 286, 509-512, 1999.
1038 * Start with a network of "one" peer, then progressively add
1039 * peers up to the total number. At each step, iterate over
1040 * all possible peers and connect new peer based on number of
1041 * existing connections of the target peer.
1043 * @param pg the peer group we are dealing with
1044 * @param proc the connection processor to use
1046 * @return the number of connections created
1049 create_scale_free (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1052 unsigned int total_connections;
1053 unsigned int outer_count;
1055 unsigned int previous_total_connections;
1059 GNUNET_assert(pg->total > 1);
1061 /* Add a connection between the first two nodes */
1062 total_connections = proc(pg, 0, 1);
1064 for (outer_count = 1; outer_count < pg->total; outer_count++)
1066 previous_total_connections = total_connections;
1067 for (i = 0; i < outer_count; i++)
1069 probability = pg->peers[i].num_connections / (double)previous_total_connections;
1070 random = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
1071 UINT64_MAX)) / ( (double) UINT64_MAX);
1073 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1074 "Considering connecting peer %d to peer %d\n",
1077 if (random < probability)
1080 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1081 "Connecting peer %d to peer %d\n",
1084 total_connections += proc(pg, outer_count, i);
1089 return total_connections;
1093 * Create a topology given a peer group (set of running peers)
1094 * and a connection processor.
1096 * @param pg the peergroup to create the topology on
1097 * @param proc the connection processor to call to actually set
1098 * up connections between two peers
1100 * @return the number of connections that were set up
1104 create_small_world_ring(struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1108 unsigned int natLog;
1109 unsigned int randomPeer;
1110 double random, logNModifier, percentage;
1111 unsigned int smallWorldConnections;
1116 unsigned int useAnd;
1117 int connect_attempts;
1119 logNModifier = 0.5; /* FIXME: default value? */
1120 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1125 if (sscanf(p_string, "%lf", &logNModifier) != 1)
1126 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1127 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1131 GNUNET_free (p_string);
1133 percentage = 0.5; /* FIXME: default percentage? */
1134 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1139 if (sscanf(p_string, "%lf", &percentage) != 1)
1140 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1141 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1145 GNUNET_free (p_string);
1147 natLog = log (pg->total);
1148 connsPerPeer = ceil (natLog * logNModifier);
1150 if (connsPerPeer % 2 == 1)
1153 smallWorldConnections = 0;
1154 connect_attempts = 0;
1155 for (i = 0; i < pg->total; i++)
1158 max = i + connsPerPeer / 2;
1159 min = i - connsPerPeer / 2;
1161 if (max > pg->total - 1)
1163 max = max - pg->total;
1169 min = pg->total - 1 + min;
1173 for (j = 0; j < connsPerPeer / 2; j++)
1175 random = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
1176 UINT64_MAX) / ( (double) UINT64_MAX));
1177 if (random < percentage)
1179 /* Connect to uniformly selected random peer */
1181 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1183 while ((((randomPeer < max) && (randomPeer > min))
1184 && (useAnd == 0)) || (((randomPeer > min)
1185 || (randomPeer < max))
1189 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1192 smallWorldConnections +=
1193 proc (pg, i, randomPeer);
1197 nodeToConnect = i + j + 1;
1198 if (nodeToConnect > pg->total - 1)
1200 nodeToConnect = nodeToConnect - pg->total;
1203 proc (pg, i, nodeToConnect);
1209 connect_attempts += smallWorldConnections;
1211 return connect_attempts;
1215 * Create a topology given a peer group (set of running peers)
1216 * and a connection processor.
1218 * @param pg the peergroup to create the topology on
1219 * @param proc the connection processor to call to actually set
1220 * up connections between two peers
1222 * @return the number of connections that were set up
1226 create_nated_internet (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1228 unsigned int outer_count, inner_count;
1229 unsigned int cutoff;
1230 int connect_attempts;
1231 double nat_percentage;
1234 nat_percentage = 0.6; /* FIXME: default percentage? */
1235 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1240 if (sscanf(p_string, "%lf", &nat_percentage) != 1)
1241 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1242 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1246 GNUNET_free (p_string);
1251 cutoff = (unsigned int) (nat_percentage * pg->total);
1253 connect_attempts = 0;
1255 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1257 for (inner_count = outer_count + 1; inner_count < pg->total;
1260 if ((outer_count > cutoff) || (inner_count > cutoff))
1263 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1264 "Connecting peer %d to peer %d\n",
1265 outer_count, inner_count);
1267 connect_attempts += proc(pg, outer_count, inner_count);
1272 return connect_attempts;
1277 * Create a topology given a peer group (set of running peers)
1278 * and a connection processor.
1280 * @param pg the peergroup to create the topology on
1281 * @param proc the connection processor to call to actually set
1282 * up connections between two peers
1284 * @return the number of connections that were set up
1288 create_small_world (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1290 unsigned int i, j, k;
1291 unsigned int square;
1294 unsigned int toggle = 1;
1295 unsigned int nodeToConnect;
1296 unsigned int natLog;
1297 unsigned int node1Row;
1298 unsigned int node1Col;
1299 unsigned int node2Row;
1300 unsigned int node2Col;
1301 unsigned int distance;
1302 double probability, random, percentage;
1303 unsigned int smallWorldConnections;
1305 int connect_attempts;
1306 square = floor (sqrt (pg->total));
1310 percentage = 0.5; /* FIXME: default percentage? */
1311 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1316 if (sscanf(p_string, "%lf", &percentage) != 1)
1317 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1318 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1322 GNUNET_free (p_string);
1324 probability = 0.5; /* FIXME: default percentage? */
1325 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1330 if (sscanf(p_string, "%lf", &probability) != 1)
1331 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1332 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1336 GNUNET_free (p_string);
1338 if (square * square != pg->total)
1340 while (rows * cols < pg->total)
1342 if (toggle % 2 == 0)
1351 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1352 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
1356 connect_attempts = 0;
1357 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
1358 * to the node to its right and above. Once this is over, we'll have our torus!
1359 * Special case for the last node (if the rows and columns are not equal), connect
1360 * to the first in the row to maintain topology.
1362 for (i = 0; i < pg->total; i++)
1364 /* First connect to the node to the right */
1365 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
1366 nodeToConnect = i + 1;
1367 else if (i + 1 == pg->total)
1368 nodeToConnect = rows * cols - cols;
1370 nodeToConnect = i - cols + 1;
1372 connect_attempts += proc (pg, i, nodeToConnect);
1375 nodeToConnect = (rows * cols) - cols + i;
1377 nodeToConnect = i - cols;
1379 if (nodeToConnect < pg->total)
1380 connect_attempts += proc (pg, i, nodeToConnect);
1382 natLog = log (pg->total);
1383 #if VERBOSE_TESTING > 2
1384 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1385 _("natural log of %d is %d, will run %d iterations\n"),
1386 pg->total, natLog, (int) (natLog * percentage));
1387 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Total connections added thus far: %u!\n"), connect_attempts);
1389 smallWorldConnections = 0;
1390 for (i = 0; i < (int) (natLog * percentage); i++)
1392 for (j = 0; j < pg->total; j++)
1394 /* Determine the row and column of node at position j on the 2d torus */
1395 node1Row = j / cols;
1396 node1Col = j - (node1Row * cols);
1397 for (k = 0; k < pg->total; k++)
1399 /* Determine the row and column of node at position k on the 2d torus */
1400 node2Row = k / cols;
1401 node2Col = k - (node2Row * cols);
1402 /* Simple Cartesian distance */
1403 distance = abs (node1Row - node2Row) + abs (node1Col - node2Col);
1406 /* Calculate probability as 1 over the square of the distance */
1407 probability = 1.0 / (distance * distance);
1408 /* Choose a random value between 0 and 1 */
1409 random = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
1410 UINT64_MAX)) / ( (double) UINT64_MAX);
1411 /* If random < probability, then connect the two nodes */
1412 if (random < probability)
1413 smallWorldConnections += proc (pg, j, k);
1419 connect_attempts += smallWorldConnections;
1420 #if VERBOSE_TESTING > 2
1421 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1422 _("Total connections added for small world: %d!\n"),
1423 smallWorldConnections);
1425 return connect_attempts;
1429 * Create a topology given a peer group (set of running peers)
1430 * and a connection processor.
1432 * @param pg the peergroup to create the topology on
1433 * @param proc the connection processor to call to actually set
1434 * up connections between two peers
1436 * @return the number of connections that were set up
1440 create_erdos_renyi (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1443 unsigned int outer_count;
1444 unsigned int inner_count;
1445 int connect_attempts;
1449 probability = 0.5; /* FIXME: default percentage? */
1450 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string(pg->cfg,
1455 if (sscanf(p_string, "%lf", &probability) != 1)
1456 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1457 _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1461 GNUNET_free (p_string);
1463 connect_attempts = 0;
1464 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1466 for (inner_count = outer_count + 1; inner_count < pg->total;
1469 temp_rand = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
1470 UINT64_MAX)) / ( (double) UINT64_MAX);
1472 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1473 _("rand is %f probability is %f\n"), temp_rand,
1476 if (temp_rand < probability)
1478 connect_attempts += proc (pg, outer_count, inner_count);
1483 return connect_attempts;
1487 * Create a topology given a peer group (set of running peers)
1488 * and a connection processor.
1490 * @param pg the peergroup to create the topology on
1491 * @param proc the connection processor to call to actually set
1492 * up connections between two peers
1494 * @return the number of connections that were set up
1498 create_2d_torus (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1501 unsigned int square;
1504 unsigned int toggle = 1;
1505 unsigned int nodeToConnect;
1506 int connect_attempts;
1508 connect_attempts = 0;
1510 square = floor (sqrt (pg->total));
1514 if (square * square != pg->total)
1516 while (rows * cols < pg->total)
1518 if (toggle % 2 == 0)
1527 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1528 _("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
1531 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
1532 * to the node to its right and above. Once this is over, we'll have our torus!
1533 * Special case for the last node (if the rows and columns are not equal), connect
1534 * to the first in the row to maintain topology.
1536 for (i = 0; i < pg->total; i++)
1538 /* First connect to the node to the right */
1539 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
1540 nodeToConnect = i + 1;
1541 else if (i + 1 == pg->total)
1542 nodeToConnect = rows * cols - cols;
1544 nodeToConnect = i - cols + 1;
1546 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1547 "Connecting peer %d to peer %d\n",
1550 connect_attempts += proc(pg, i, nodeToConnect);
1552 /* Second connect to the node immediately above */
1554 nodeToConnect = (rows * cols) - cols + i;
1556 nodeToConnect = i - cols;
1558 if (nodeToConnect < pg->total)
1561 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1562 "Connecting peer %d to peer %d\n",
1565 connect_attempts += proc(pg, i, nodeToConnect);
1570 return connect_attempts;
1575 * Create a topology given a peer group (set of running peers)
1576 * and a connection processor.
1578 * @param pg the peergroup to create the topology on
1579 * @param proc the connection processor to call to actually set
1580 * up connections between two peers
1582 * @return the number of connections that were set up
1586 create_clique (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1588 unsigned int outer_count;
1589 unsigned int inner_count;
1590 int connect_attempts;
1592 connect_attempts = 0;
1594 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1596 for (inner_count = outer_count + 1; inner_count < pg->total;
1600 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1601 "Connecting peer %d to peer %d\n",
1602 outer_count, inner_count);
1604 connect_attempts += proc(pg, outer_count, inner_count);
1608 return connect_attempts;
1612 * Create a topology given a peer group (set of running peers)
1613 * and a connection processor.
1615 * @param pg the peergroup to create the topology on
1616 * @param proc the connection processor to call to actually set
1617 * up connections between two peers
1619 * @return the number of connections that were set up
1623 create_line (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1626 int connect_attempts;
1628 connect_attempts = 0;
1630 /* Connect each peer to the next highest numbered peer */
1631 for (count = 0; count < pg->total - 1; count++)
1634 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1635 "Connecting peer %d to peer %d\n",
1638 connect_attempts += proc(pg, count, count + 1);
1641 return connect_attempts;
1645 * Create a topology given a peer group (set of running peers)
1646 * and a connection processor.
1648 * @param pg the peergroup to create the topology on
1649 * @param proc the connection processor to call to actually set
1650 * up connections between two peers
1652 * @return the number of connections that were set up
1656 create_ring (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_ConnectionProcessor proc)
1659 int connect_attempts;
1661 connect_attempts = 0;
1663 /* Connect each peer to the next highest numbered peer */
1664 for (count = 0; count < pg->total - 1; count++)
1667 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1668 "Connecting peer %d to peer %d\n",
1671 connect_attempts += proc(pg, count, count + 1);
1674 /* Connect the last peer to the first peer */
1675 connect_attempts += proc(pg, pg->total - 1, 0);
1677 return connect_attempts;
1682 * Iterator for writing friends of a peer to a file.
1684 * @param cls closure, an open writable file handle
1685 * @param key the key the daemon was stored under
1686 * @param value the GNUNET_TESTING_Daemon that needs to be written.
1688 * @return GNUNET_YES to continue iteration
1690 * TODO: Could replace friend_file_iterator and blacklist_file_iterator
1691 * with a single file_iterator that takes a closure which contains
1692 * the prefix to write before the peer. Then this could be used
1693 * for blacklisting multiple transports and writing the friend
1694 * file. I'm sure *someone* will complain loudly about other
1695 * things that negate these functions even existing so no point in
1699 friend_file_iterator (void *cls,
1700 const GNUNET_HashCode * key,
1703 FILE *temp_friend_handle = cls;
1704 struct GNUNET_TESTING_Daemon *peer = value;
1705 struct GNUNET_PeerIdentity *temppeer;
1706 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
1708 temppeer = &peer->id;
1709 GNUNET_CRYPTO_hash_to_enc(&temppeer->hashPubKey, &peer_enc);
1710 fprintf(temp_friend_handle, "%s\n", (char *)&peer_enc);
1715 struct BlacklistContext
1718 * The (open) file handle to write to
1720 FILE *temp_file_handle;
1723 * The transport that this peer will be blacklisted on.
1729 * Iterator for writing blacklist data to appropriate files.
1731 * @param cls closure, an open writable file handle
1732 * @param key the key the daemon was stored under
1733 * @param value the GNUNET_TESTING_Daemon that needs to be written.
1735 * @return GNUNET_YES to continue iteration
1738 blacklist_file_iterator (void *cls,
1739 const GNUNET_HashCode * key,
1742 struct BlacklistContext *blacklist_ctx = cls;
1743 //FILE *temp_blacklist_handle = cls;
1744 struct GNUNET_TESTING_Daemon *peer = value;
1745 struct GNUNET_PeerIdentity *temppeer;
1746 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
1748 temppeer = &peer->id;
1749 GNUNET_CRYPTO_hash_to_enc(&temppeer->hashPubKey, &peer_enc);
1750 fprintf(blacklist_ctx->temp_file_handle, "%s:%s\n", blacklist_ctx->transport, (char *)&peer_enc);
1756 * Create the friend files based on the PeerConnection's
1757 * of each peer in the peer group, and copy the files
1758 * to the appropriate place
1760 * @param pg the peer group we are dealing with
1763 create_and_copy_friend_files (struct GNUNET_TESTING_PeerGroup *pg)
1765 FILE *temp_friend_handle;
1766 unsigned int pg_iter;
1767 char *temp_service_path;
1771 enum GNUNET_OS_ProcessStatusType type;
1772 unsigned long return_code;
1777 pidarr = GNUNET_malloc(sizeof(pid_t) * pg->total);
1778 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
1780 mytemp = GNUNET_DISK_mktemp("friends");
1781 GNUNET_assert(mytemp != NULL);
1782 temp_friend_handle = fopen (mytemp, "wt");
1783 GNUNET_assert(temp_friend_handle != NULL);
1784 GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].allowed_peers, &friend_file_iterator, temp_friend_handle);
1785 fclose(temp_friend_handle);
1788 GNUNET_CONFIGURATION_get_value_string(pg->peers[pg_iter].daemon->cfg, "PATHS", "SERVICEHOME", &temp_service_path))
1790 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1791 _("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
1794 if (UNLINK (mytemp) != 0)
1795 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", mytemp);
1796 GNUNET_free (mytemp);
1800 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
1802 GNUNET_asprintf (&arg, "%s/friends", temp_service_path);
1803 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv",
1804 "mv", mytemp, arg, NULL);
1806 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1807 _("Copying file with command cp %s %s\n"), mytemp, arg);
1812 else /* Remote, scp the file to the correct place */
1814 if (NULL != pg->peers[pg_iter].daemon->username)
1815 GNUNET_asprintf (&arg, "%s@%s:%s/friends", pg->peers[pg_iter].daemon->username, pg->peers[pg_iter].daemon->hostname, temp_service_path);
1817 GNUNET_asprintf (&arg, "%s:%s/friends", pg->peers[pg_iter].daemon->hostname, temp_service_path);
1818 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp",
1819 "scp", mytemp, arg, NULL);
1822 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1823 _("Copying file with command scp %s %s\n"), mytemp, arg);
1827 GNUNET_free (temp_service_path);
1828 GNUNET_free (mytemp);
1832 ret = GNUNET_SYSERR;
1833 while ((count < max_wait) && (ret != GNUNET_OK))
1836 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
1839 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1840 _("Checking copy status of file %d\n"), pg_iter);
1842 if (pidarr[pg_iter] != 0) /* Check for already completed! */
1844 if (GNUNET_OS_process_status(pidarr[pg_iter], &type, &return_code) != GNUNET_OK)
1846 ret = GNUNET_SYSERR;
1848 else if ((type != GNUNET_OS_PROCESS_EXITED) || (return_code != 0))
1850 ret = GNUNET_SYSERR;
1854 pidarr[pg_iter] = 0;
1856 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1857 _("File %d copied\n"), pg_iter);
1863 if (ret == GNUNET_SYSERR)
1865 /* FIXME: why sleep here? -CG */
1871 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1872 _("Finished copying all friend files!\n"));
1874 GNUNET_free(pidarr);
1880 * Create the blacklist files based on the PeerConnection's
1881 * of each peer in the peer group, and copy the files
1882 * to the appropriate place.
1884 * @param pg the peer group we are dealing with
1885 * @param transports space delimited list of transports to blacklist
1888 create_and_copy_blacklist_files (struct GNUNET_TESTING_PeerGroup *pg, char *transports)
1890 FILE *temp_file_handle;
1891 static struct BlacklistContext blacklist_ctx;
1892 unsigned int pg_iter;
1893 char *temp_service_path;
1897 enum GNUNET_OS_ProcessStatusType type;
1898 unsigned long return_code;
1905 char *temp_transports;
1907 pidarr = GNUNET_malloc(sizeof(pid_t) * pg->total);
1908 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
1910 mytemp = GNUNET_DISK_mktemp("blacklist");
1911 GNUNET_assert(mytemp != NULL);
1912 temp_file_handle = fopen (mytemp, "wt");
1913 GNUNET_assert(temp_file_handle != NULL);
1914 temp_transports = GNUNET_strdup(transports);
1915 blacklist_ctx.temp_file_handle = temp_file_handle;
1916 transport_len = strlen(temp_transports) + 1;
1919 for (i = 0; i < transport_len; i++)
1921 if ((temp_transports[i] == ' ') && (pos == NULL))
1922 continue; /* At start of string (whitespace) */
1923 else if ((temp_transports[i] == ' ') || (temp_transports[i] == '\0')) /* At end of string */
1925 temp_transports[i] = '\0';
1926 blacklist_ctx.transport = pos;
1927 GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].blacklisted_peers, &blacklist_file_iterator, &blacklist_ctx);
1929 } /* At beginning of actual string */
1930 else if (pos == NULL)
1932 pos = &temp_transports[i];
1936 GNUNET_free (temp_transports);
1937 fclose(temp_file_handle);
1940 GNUNET_CONFIGURATION_get_value_string(pg->peers[pg_iter].daemon->cfg, "PATHS", "SERVICEHOME", &temp_service_path))
1942 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
1943 _("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
1946 if (UNLINK (mytemp) != 0)
1947 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink", mytemp);
1948 GNUNET_free (mytemp);
1952 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
1954 GNUNET_asprintf (&arg, "%s/blacklist", temp_service_path);
1955 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv",
1956 "mv", mytemp, arg, NULL);
1958 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1959 _("Copying file with command cp %s %s\n"), mytemp, arg);
1964 else /* Remote, scp the file to the correct place */
1966 if (NULL != pg->peers[pg_iter].daemon->username)
1967 GNUNET_asprintf (&arg, "%s@%s:%s/blacklist", pg->peers[pg_iter].daemon->username, pg->peers[pg_iter].daemon->hostname, temp_service_path);
1969 GNUNET_asprintf (&arg, "%s:%s/blacklist", pg->peers[pg_iter].daemon->hostname, temp_service_path);
1970 pidarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp",
1971 "scp", mytemp, arg, NULL);
1974 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1975 _("Copying file with command scp %s %s\n"), mytemp, arg);
1979 GNUNET_free (temp_service_path);
1980 GNUNET_free (mytemp);
1984 ret = GNUNET_SYSERR;
1985 while ((count < max_wait) && (ret != GNUNET_OK))
1988 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
1991 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1992 _("Checking copy status of file %d\n"), pg_iter);
1994 if (pidarr[pg_iter] != 0) /* Check for already completed! */
1996 if (GNUNET_OS_process_status(pidarr[pg_iter], &type, &return_code) != GNUNET_OK)
1998 ret = GNUNET_SYSERR;
2000 else if ((type != GNUNET_OS_PROCESS_EXITED) || (return_code != 0))
2002 ret = GNUNET_SYSERR;
2006 pidarr[pg_iter] = 0;
2008 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2009 _("File %d copied\n"), pg_iter);
2015 if (ret == GNUNET_SYSERR)
2017 /* FIXME: why sleep here? -CG */
2023 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2024 _("Finished copying all blacklist files!\n"));
2026 GNUNET_free(pidarr);
2032 * Internal notification of a connection, kept so that we can ensure some connections
2033 * happen instead of flooding all testing daemons with requests to connect.
2035 static void internal_connect_notify (void *cls,
2036 const struct GNUNET_PeerIdentity *first,
2037 const struct GNUNET_PeerIdentity *second,
2039 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
2040 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
2041 struct GNUNET_TESTING_Daemon *first_daemon,
2042 struct GNUNET_TESTING_Daemon *second_daemon,
2045 struct GNUNET_TESTING_PeerGroup *pg = cls;
2046 outstanding_connects--;
2048 pg->notify_connection(pg->notify_connection_cls, first, second, distance, first_cfg, second_cfg, first_daemon, second_daemon, emsg);
2053 * Either delay a connection (because there are too many outstanding)
2054 * or schedule it for right now.
2056 * @param cls a connection context
2057 * @param tc the task runtime context
2059 static void schedule_connect(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2061 struct ConnectContext *connect_context = cls;
2063 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
2066 if (outstanding_connects > MAX_OUTSTANDING_CONNECTIONS)
2068 #if VERBOSE_TESTING > 2
2069 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2070 _("Delaying connect, we have too many outstanding connections!\n"));
2072 GNUNET_SCHEDULER_add_delayed(connect_context->pg->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &schedule_connect, connect_context);
2076 #if VERBOSE_TESTING > 2
2077 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2078 _("Creating connection, outstanding_connections is %d\n"), outstanding_connects);
2080 outstanding_connects++;
2081 GNUNET_TESTING_daemons_connect (connect_context->first,
2082 connect_context->second,
2085 &internal_connect_notify,
2086 connect_context->pg);
2087 GNUNET_free(connect_context);
2093 * Iterator for actually scheduling connections to be created
2094 * between two peers.
2096 * @param cls closure, a GNUNET_TESTING_Daemon
2097 * @param key the key the second Daemon was stored under
2098 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
2100 * @return GNUNET_YES to continue iteration
2103 connect_iterator (void *cls,
2104 const GNUNET_HashCode * key,
2107 struct PeerData *first = cls;
2108 struct GNUNET_TESTING_Daemon *second = value;
2109 struct ConnectContext *connect_context;
2111 connect_context = GNUNET_malloc(sizeof(struct ConnectContext));
2112 connect_context->pg = first->pg;
2113 connect_context->first = first->daemon;
2114 connect_context->second = second;
2115 GNUNET_SCHEDULER_add_now(first->pg->sched, &schedule_connect, connect_context);
2122 * Iterator for copying all entries in the allowed hashmap to the
2125 * @param cls closure, a GNUNET_TESTING_Daemon
2126 * @param key the key the second Daemon was stored under
2127 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
2129 * @return GNUNET_YES to continue iteration
2132 copy_topology_iterator (void *cls,
2133 const GNUNET_HashCode * key,
2136 struct PeerData *first = cls;
2138 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(first->connect_peers, key, value, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2144 * Make the peers to connect the same as those that are allowed to be
2147 * @param pg the peer group
2150 copy_allowed_topology (struct GNUNET_TESTING_PeerGroup *pg)
2152 unsigned int pg_iter;
2157 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2159 ret = GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].allowed_peers, ©_topology_iterator, &pg->peers[pg_iter]);
2160 if (GNUNET_SYSERR == ret)
2161 return GNUNET_SYSERR;
2163 total = total + ret;
2171 * Connect the topology as specified by the PeerConnection's
2172 * of each peer in the peer group
2174 * @param pg the peer group we are dealing with
2175 * @return the number of connections that will be attempted
2178 connect_topology (struct GNUNET_TESTING_PeerGroup *pg)
2180 unsigned int pg_iter;
2184 struct PeerConnection *connection_iter;
2185 struct ConnectContext *connect_context;
2189 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2191 ret = GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].connect_peers, &connect_iterator, &pg->peers[pg_iter]);
2192 if (GNUNET_SYSERR == ret)
2193 return GNUNET_SYSERR;
2195 total = total + ret;
2199 while (connection_iter != NULL)
2201 connect_context = GNUNET_malloc(sizeof(struct ConnectContext));
2202 connect_context->pg = pg;
2203 connect_context->first = ;
2204 connect_context->second = connection_iter->daemon;
2205 GNUNET_SCHEDULER_add_now(pg->sched, &schedule_connect, connect_context);
2206 connection_iter = connection_iter->next;
2215 * Takes a peer group and creates a topology based on the
2216 * one specified. Creates a topology means generates friend
2217 * files for the peers so they can only connect to those allowed
2218 * by the topology. This will only have an effect once peers
2219 * are started if the FRIENDS_ONLY option is set in the base
2220 * config. Also takes an optional restrict topology which
2221 * disallows connections based on a particular transport
2222 * UNLESS they are specified in the restricted topology.
2224 * @param pg the peer group struct representing the running peers
2225 * @param topology which topology to connect the peers in
2226 * @param restrict_topology allow only direct TCP connections in this topology
2227 * use GNUNET_TESTING_TOPOLOGY_NONE for no restrictions
2228 * @param restrict_transports space delimited list of transports to blacklist
2229 * to create restricted topology
2231 * @return the maximum number of connections were all allowed peers
2232 * connected to each other
2235 GNUNET_TESTING_create_topology (struct GNUNET_TESTING_PeerGroup *pg,
2236 enum GNUNET_TESTING_Topology topology,
2237 enum GNUNET_TESTING_Topology restrict_topology,
2238 char *restrict_transports)
2241 int num_connections;
2242 int unblacklisted_connections;
2244 GNUNET_assert (pg->notify_connection != NULL);
2249 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
2251 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2252 _("Creating clique topology\n"));
2254 num_connections = create_clique (pg, &add_allowed_connections);
2256 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
2258 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2259 _("Creating small world (ring) topology\n"));
2261 num_connections = create_small_world_ring (pg, &add_allowed_connections);
2263 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
2265 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2266 _("Creating small world (2d-torus) topology\n"));
2268 num_connections = create_small_world (pg, &add_allowed_connections);
2270 case GNUNET_TESTING_TOPOLOGY_RING:
2272 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2273 _("Creating ring topology\n"));
2275 num_connections = create_ring (pg, &add_allowed_connections);
2277 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
2279 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2280 _("Creating 2d torus topology\n"));
2282 num_connections = create_2d_torus (pg, &add_allowed_connections);
2284 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
2286 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2287 _("Creating Erdos-Renyi topology\n"));
2289 num_connections = create_erdos_renyi (pg, &add_allowed_connections);
2291 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
2293 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2294 _("Creating InterNAT topology\n"));
2296 num_connections = create_nated_internet (pg, &add_allowed_connections);
2298 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
2300 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2301 _("Creating Scale Free topology\n"));
2303 num_connections = create_scale_free (pg, &add_allowed_connections);
2305 case GNUNET_TESTING_TOPOLOGY_LINE:
2307 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2308 _("Creating straight line topology\n"));
2310 num_connections = create_line (pg, &add_allowed_connections);
2312 case GNUNET_TESTING_TOPOLOGY_NONE:
2314 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2315 _("Creating no allowed topology (all peers can connect at core level)\n"));
2317 num_connections = 0;
2320 num_connections = 0;
2324 if (num_connections < 0)
2325 return GNUNET_SYSERR;
2327 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "TESTING", "F2F"))
2329 ret = create_and_copy_friend_files(pg);
2330 if (ret != GNUNET_OK)
2333 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2334 _("Failed during friend file copying!\n"));
2336 return GNUNET_SYSERR;
2341 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2342 _("Friend files created/copied successfully!\n"));
2347 /* Use the create clique method to initially set all connections as blacklisted. */
2348 if (restrict_topology != GNUNET_TESTING_TOPOLOGY_NONE)
2349 create_clique (pg, &blacklist_connections);
2350 unblacklisted_connections = 0;
2351 /* Un-blacklist connections as per the topology specified */
2352 switch (restrict_topology)
2354 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
2356 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2357 _("Blacklisting all but clique topology\n"));
2359 unblacklisted_connections = create_clique (pg, &unblacklist_connections);
2361 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
2363 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2364 _("Blacklisting all but small world (ring) topology\n"));
2366 unblacklisted_connections = create_small_world_ring (pg, &unblacklist_connections);
2368 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
2370 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2371 _("Blacklisting all but small world (2d-torus) topology\n"));
2373 unblacklisted_connections = create_small_world (pg, &unblacklist_connections);
2375 case GNUNET_TESTING_TOPOLOGY_RING:
2377 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2378 _("Blacklisting all but ring topology\n"));
2380 unblacklisted_connections = create_ring (pg, &unblacklist_connections);
2382 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
2384 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2385 _("Blacklisting all but 2d torus topology\n"));
2387 unblacklisted_connections = create_2d_torus (pg, &unblacklist_connections);
2389 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
2391 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2392 _("Blacklisting all but Erdos-Renyi topology\n"));
2394 unblacklisted_connections = create_erdos_renyi (pg, &unblacklist_connections);
2396 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
2398 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2399 _("Blacklisting all but InterNAT topology\n"));
2401 unblacklisted_connections = create_nated_internet (pg, &unblacklist_connections);
2403 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
2405 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2406 _("Blacklisting all but Scale Free topology\n"));
2408 unblacklisted_connections = create_scale_free (pg, &unblacklist_connections);
2410 case GNUNET_TESTING_TOPOLOGY_LINE:
2412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2413 _("Blacklisting all but straight line topology\n"));
2415 unblacklisted_connections = create_line (pg, &unblacklist_connections);
2417 case GNUNET_TESTING_TOPOLOGY_NONE:
2419 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2420 _("Creating no blacklist topology (all peers can connect at transport level)\n"));
2426 if ((unblacklisted_connections > 0) && (restrict_transports != NULL))
2428 ret = create_and_copy_blacklist_files(pg, restrict_transports);
2429 if (ret != GNUNET_OK)
2432 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2433 _("Failed during blacklist file copying!\n"));
2435 return GNUNET_SYSERR;
2440 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2441 _("Blacklist files created/copied successfully!\n"));
2445 return num_connections;
2448 struct RandomContext
2453 struct GNUNET_TESTING_PeerGroup *pg;
2456 * uid of the first peer
2461 * Peer data for first peer.
2463 struct PeerData *first;
2466 * Random percentage to use
2471 struct MinimumContext
2476 struct GNUNET_TESTING_PeerGroup *pg;
2479 * uid of the first peer
2484 * Peer data for first peer.
2486 struct PeerData *first;
2489 * Number of conns per peer
2491 unsigned int num_to_add;
2494 * Permuted array of all possible connections. Only add the Nth
2495 * peer if it's in the Nth position.
2497 unsigned int *pg_array;
2500 * What number is the current element we are iterating over?
2502 unsigned int current;
2510 struct GNUNET_TESTING_PeerGroup *pg;
2513 * uid of the first peer
2518 * uid of the second peer
2520 uint32_t second_uid;
2523 * Peer data for first peer.
2525 struct PeerData *first;
2528 * Which peer has been chosen as the one to add?
2530 unsigned int chosen;
2533 * What number is the current element we are iterating over?
2535 unsigned int current;
2539 * Iterator for choosing random peers to connect.
2541 * @param cls closure, a RandomContext
2542 * @param key the key the second Daemon was stored under
2543 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
2545 * @return GNUNET_YES to continue iteration
2548 random_connect_iterator (void *cls,
2549 const GNUNET_HashCode * key,
2552 struct RandomContext *random_ctx = cls;
2553 double random_number;
2554 uint32_t second_pos;
2555 GNUNET_HashCode first_hash;
2556 random_number = ((double) GNUNET_CRYPTO_random_u64(GNUNET_CRYPTO_QUALITY_WEAK,
2557 UINT64_MAX)) / ( (double) UINT64_MAX);
2558 if (random_number < random_ctx->percentage)
2560 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(random_ctx->first->connect_peers_working_set, key, value, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2562 /* Now we have considered this particular connection, remove it from the second peer so it's not double counted */
2563 uid_from_hash(key, &second_pos);
2564 hash_from_uid(random_ctx->first_uid, &first_hash);
2565 GNUNET_assert(random_ctx->pg->total > second_pos);
2566 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(random_ctx->pg->peers[second_pos].connect_peers, &first_hash, random_ctx->first->daemon));
2572 * Iterator for adding at least X peers to a peers connection set.
2574 * @param cls closure, MinimumContext
2575 * @param key the key the second Daemon was stored under
2576 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
2578 * @return GNUNET_YES to continue iteration
2581 minimum_connect_iterator (void *cls,
2582 const GNUNET_HashCode * key,
2585 struct MinimumContext *min_ctx = cls;
2586 uint32_t second_pos;
2587 GNUNET_HashCode first_hash;
2590 if (GNUNET_CONTAINER_multihashmap_size(min_ctx->first->connect_peers_working_set) < min_ctx->num_to_add)
2592 for (i = 0; i < min_ctx->num_to_add; i++)
2594 if (min_ctx->pg_array[i] == min_ctx->current)
2596 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(min_ctx->first->connect_peers_working_set, key, value, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2597 uid_from_hash(key, &second_pos);
2598 hash_from_uid(min_ctx->first_uid, &first_hash);
2599 GNUNET_assert(min_ctx->pg->total > second_pos);
2600 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(min_ctx->pg->peers[second_pos].connect_peers_working_set, &first_hash, min_ctx->first->daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2601 /* Now we have added this particular connection, remove it from the second peer's map so it's not double counted */
2602 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(min_ctx->pg->peers[second_pos].connect_peers, &first_hash, min_ctx->first->daemon));
2609 return GNUNET_NO; /* We can stop iterating, we have enough peers! */
2615 * Iterator for adding peers to a connection set based on a depth first search.
2617 * @param cls closure, MinimumContext
2618 * @param key the key the second daemon was stored under
2619 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
2621 * @return GNUNET_YES to continue iteration
2624 dfs_connect_iterator (void *cls,
2625 const GNUNET_HashCode * key,
2628 struct DFSContext *dfs_ctx = cls;
2629 GNUNET_HashCode first_hash;
2631 if (dfs_ctx->current == dfs_ctx->chosen)
2633 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(dfs_ctx->first->connect_peers_working_set, key, value, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2634 uid_from_hash(key, &dfs_ctx->second_uid);
2635 hash_from_uid(dfs_ctx->first_uid, &first_hash);
2636 GNUNET_assert(GNUNET_OK == GNUNET_CONTAINER_multihashmap_put(dfs_ctx->pg->peers[dfs_ctx->second_uid].connect_peers_working_set, &first_hash, dfs_ctx->first->daemon, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
2637 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(dfs_ctx->pg->peers[dfs_ctx->second_uid].connect_peers, &first_hash, dfs_ctx->first->daemon));
2638 /* Can't remove second from first yet because we are currently iterating, hence the return value in the DFSContext! */
2639 return GNUNET_NO; /* We have found our peer, don't iterate more */
2648 * From the set of connections possible, choose percentage percent of connections
2649 * to actually connect.
2651 * @param pg the peergroup we are dealing with
2652 * @param percentage what percent of total connections to make
2655 choose_random_connections(struct GNUNET_TESTING_PeerGroup *pg, double percentage)
2657 struct RandomContext random_ctx;
2660 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2662 random_ctx.first_uid = pg_iter;
2663 random_ctx.first = &pg->peers[pg_iter];
2664 random_ctx.percentage = percentage;
2666 pg->peers[pg_iter].connect_peers_working_set = GNUNET_CONTAINER_multihashmap_create(pg->total);
2667 GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].connect_peers, &random_connect_iterator, &random_ctx);
2668 /* Now remove the old connections */
2669 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[pg_iter].connect_peers);
2670 /* And replace with the random set */
2671 pg->peers[pg_iter].connect_peers = pg->peers[pg_iter].connect_peers_working_set;
2676 * From the set of connections possible, choose at least num connections per
2679 * @param pg the peergroup we are dealing with
2680 * @param num how many connections at least should each peer have (if possible)?
2683 choose_minimum(struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
2685 struct MinimumContext minimum_ctx;
2688 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2690 pg->peers[pg_iter].connect_peers_working_set = GNUNET_CONTAINER_multihashmap_create(num);
2693 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2695 minimum_ctx.first_uid = pg_iter;
2696 minimum_ctx.pg_array = GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_WEAK,
2697 GNUNET_CONTAINER_multihashmap_size(pg->peers[pg_iter].connect_peers));
2698 minimum_ctx.first = &pg->peers[pg_iter];
2699 minimum_ctx.pg = pg;
2700 minimum_ctx.num_to_add = num;
2701 minimum_ctx.current = 0;
2702 GNUNET_CONTAINER_multihashmap_iterate(pg->peers[pg_iter].connect_peers,
2703 &minimum_connect_iterator,
2707 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2709 /* Remove the "old" connections */
2710 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[pg_iter].connect_peers);
2711 /* And replace with the working set */
2712 pg->peers[pg_iter].connect_peers = pg->peers[pg_iter].connect_peers_working_set;
2719 count_workingset_connections(struct GNUNET_TESTING_PeerGroup *pg)
2722 unsigned int pg_iter;
2726 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2728 count += GNUNET_CONTAINER_multihashmap_size(pg->peers[pg_iter].connect_peers_working_set);
2735 static unsigned int count_allowed_connections(struct GNUNET_TESTING_PeerGroup *pg)
2738 unsigned int pg_iter;
2742 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2744 count += GNUNET_CONTAINER_multihashmap_size(pg->peers[pg_iter].connect_peers);
2751 * From the set of connections possible, choose at least num connections per
2752 * peer based on depth first traversal of peer connections. If DFS leaves
2753 * peers unconnected, ensure those peers get connections.
2755 * @param pg the peergroup we are dealing with
2756 * @param num how many connections at least should each peer have (if possible)?
2759 perform_dfs (struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
2761 struct DFSContext dfs_ctx;
2764 uint32_t starting_peer;
2765 uint32_t least_connections;
2766 GNUNET_HashCode second_hash;
2768 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2770 pg->peers[pg_iter].connect_peers_working_set = GNUNET_CONTAINER_multihashmap_create(num);
2775 while ((count_workingset_connections(pg) < num * pg->total) && (count_allowed_connections(pg) > 0))
2777 if (dfs_count % pg->total == 0) /* Restart the DFS at some weakly connected peer */
2779 least_connections = -1; /* Set to very high number */
2780 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2782 if (GNUNET_CONTAINER_multihashmap_size(pg->peers[pg_iter].connect_peers_working_set) < least_connections)
2784 starting_peer = pg_iter;
2785 least_connections = GNUNET_CONTAINER_multihashmap_size(pg->peers[pg_iter].connect_peers_working_set);
2790 if (GNUNET_CONTAINER_multihashmap_size(pg->peers[starting_peer].connect_peers) == 0) /* Ensure there is at least one peer left to connect! */
2796 /* Choose a random peer from the chosen peers set of connections to add */
2797 dfs_ctx.chosen = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, GNUNET_CONTAINER_multihashmap_size(pg->peers[starting_peer].connect_peers));
2798 dfs_ctx.first_uid = starting_peer;
2799 dfs_ctx.first = &pg->peers[starting_peer];
2801 dfs_ctx.current = 0;
2803 GNUNET_CONTAINER_multihashmap_iterate(pg->peers[starting_peer].connect_peers, &dfs_connect_iterator, &dfs_ctx);
2804 /* Remove the second from the first, since we will be continuing the search and may encounter the first peer again! */
2805 hash_from_uid(dfs_ctx.second_uid, &second_hash);
2806 GNUNET_assert(GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove(pg->peers[starting_peer].connect_peers, &second_hash, pg->peers[dfs_ctx.second_uid].daemon));
2807 starting_peer = dfs_ctx.second_uid;
2810 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2812 /* Remove the "old" connections */
2813 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[pg_iter].connect_peers);
2814 /* And replace with the working set */
2815 pg->peers[pg_iter].connect_peers = pg->peers[pg_iter].connect_peers_working_set;
2820 * Internal callback for topology information for a particular peer.
2823 internal_topology_callback(void *cls,
2824 const struct GNUNET_PeerIdentity *peer,
2825 struct GNUNET_TIME_Relative latency, uint32_t distance)
2827 struct CoreContext *core_ctx = cls;
2828 struct TopologyIterateContext *iter_ctx = core_ctx->iter_context;
2830 if (peer == NULL) /* Either finished, or something went wrong */
2832 iter_ctx->completed++;
2833 iter_ctx->connected--;
2834 /* One core context allocated per iteration, must free! */
2835 GNUNET_free(core_ctx);
2839 iter_ctx->topology_cb(iter_ctx->cls, &core_ctx->daemon->id, peer, latency, distance, NULL);
2842 if (iter_ctx->completed == iter_ctx->total)
2844 iter_ctx->topology_cb(iter_ctx->cls, NULL, NULL, GNUNET_TIME_relative_get_zero(), 0, NULL);
2845 /* Once all are done, free the iteration context */
2846 GNUNET_free(iter_ctx);
2852 * Check running topology iteration tasks, if below max start a new one, otherwise
2853 * schedule for some time in the future.
2856 schedule_get_topology(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2858 struct CoreContext *core_context = cls;
2859 struct TopologyIterateContext *topology_context = (struct TopologyIterateContext *)core_context->iter_context;
2860 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
2863 if (topology_context->connected > MAX_OUTSTANDING_CONNECTIONS)
2865 #if VERBOSE_TESTING > 2
2866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2867 _("Delaying connect, we have too many outstanding connections!\n"));
2869 GNUNET_SCHEDULER_add_delayed(core_context->daemon->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &schedule_get_topology, core_context);
2873 #if VERBOSE_TESTING > 2
2874 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2875 _("Creating connection, outstanding_connections is %d\n"), outstanding_connects);
2877 topology_context->connected++;
2878 if (GNUNET_OK != GNUNET_CORE_iterate_peers (core_context->daemon->sched, core_context->daemon->cfg, &internal_topology_callback, core_context))
2879 internal_topology_callback(core_context, NULL, GNUNET_TIME_relative_get_zero(), 0);
2885 * Iterate over all (running) peers in the peer group, retrieve
2886 * all connections that each currently has.
2889 GNUNET_TESTING_get_topology (struct GNUNET_TESTING_PeerGroup *pg, GNUNET_TESTING_NotifyTopology cb, void *cls)
2891 struct TopologyIterateContext *topology_context;
2892 struct CoreContext *core_ctx;
2894 unsigned int total_count;
2896 /* Allocate a single topology iteration context */
2897 topology_context = GNUNET_malloc(sizeof(struct TopologyIterateContext));
2898 topology_context->topology_cb = cb;
2899 topology_context->cls = cls;
2901 for (i = 0; i < pg->total; i++)
2903 if (pg->peers[i].daemon->running == GNUNET_YES)
2905 /* Allocate one core context per core we need to connect to */
2906 core_ctx = GNUNET_malloc(sizeof(struct CoreContext));
2907 core_ctx->daemon = pg->peers[i].daemon;
2908 /* Set back pointer to topology iteration context */
2909 core_ctx->iter_context = topology_context;
2910 GNUNET_SCHEDULER_add_now(pg->sched, &schedule_get_topology, core_ctx);
2914 topology_context->total = total_count;
2919 * Callback function to process statistic values.
2920 * This handler is here only really to insert a peer
2921 * identity (or daemon) so the statistics can be uniquely
2922 * tied to a single running peer.
2924 * @param cls closure
2925 * @param subsystem name of subsystem that created the statistic
2926 * @param name the name of the datum
2927 * @param value the current value
2928 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
2929 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
2931 static int internal_stats_callback (void *cls,
2932 const char *subsystem,
2937 struct CoreContext *core_context = cls;
2938 struct StatsIterateContext *stats_context = (struct StatsIterateContext *)core_context->iter_context;
2940 return stats_context->proc(stats_context->cls, &core_context->daemon->id, subsystem, name, value, is_persistent);
2944 * Internal continuation call for statistics iteration.
2946 * @param cls closure, the CoreContext for this iteration
2947 * @param success whether or not the statistics iterations
2948 * was canceled or not (we don't care)
2950 static void internal_stats_cont (void *cls, int success)
2952 struct CoreContext *core_context = cls;
2953 struct StatsIterateContext *stats_context = (struct StatsIterateContext *)core_context->iter_context;
2955 stats_context->connected--;
2956 stats_context->completed++;
2958 if (stats_context->completed == stats_context->total)
2960 stats_context->cont(stats_context->cls, GNUNET_YES);
2961 if (stats_context->stats_handle != NULL)
2962 GNUNET_STATISTICS_destroy(stats_context->stats_handle, GNUNET_NO);
2963 GNUNET_free(stats_context);
2965 GNUNET_free(core_context);
2969 * Check running topology iteration tasks, if below max start a new one, otherwise
2970 * schedule for some time in the future.
2973 schedule_get_statistics(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2975 struct CoreContext *core_context = cls;
2976 struct StatsIterateContext *stats_context = (struct StatsIterateContext *)core_context->iter_context;
2978 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
2981 if (stats_context->connected > MAX_OUTSTANDING_CONNECTIONS)
2983 #if VERBOSE_TESTING > 2
2984 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2985 _("Delaying connect, we have too many outstanding connections!\n"));
2987 GNUNET_SCHEDULER_add_delayed(core_context->daemon->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &schedule_get_statistics, core_context);
2991 #if VERBOSE_TESTING > 2
2992 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2993 _("Creating connection, outstanding_connections is %d\n"), outstanding_connects);
2996 stats_context->connected++;
2997 stats_context->stats_handle = GNUNET_STATISTICS_create(core_context->daemon->sched, "testing", core_context->daemon->cfg);
2998 if (stats_context->stats_handle == NULL)
3000 internal_stats_cont (core_context, GNUNET_NO);
3004 stats_context->stats_get_handle = GNUNET_STATISTICS_get(stats_context->stats_handle, NULL, NULL, GNUNET_TIME_relative_get_forever(), &internal_stats_cont, &internal_stats_callback, core_context);
3005 if (stats_context->stats_get_handle == NULL)
3006 internal_stats_cont (core_context, GNUNET_NO);
3013 * Iterate over all (running) peers in the peer group, retrieve
3014 * all statistics from each.
3017 GNUNET_TESTING_get_statistics (struct GNUNET_TESTING_PeerGroup *pg,
3018 GNUNET_STATISTICS_Callback cont,
3019 GNUNET_TESTING_STATISTICS_Iterator proc, void *cls)
3021 struct StatsIterateContext *stats_context;
3022 struct CoreContext *core_ctx;
3024 unsigned int total_count;
3026 /* Allocate a single stats iteration context */
3027 stats_context = GNUNET_malloc(sizeof(struct StatsIterateContext));
3028 stats_context->cont = cont;
3029 stats_context->proc = proc;
3030 stats_context->cls = cls;
3032 for (i = 0; i < pg->total; i++)
3034 if (pg->peers[i].daemon->running == GNUNET_YES)
3036 /* Allocate one core context per core we need to connect to */
3037 core_ctx = GNUNET_malloc(sizeof(struct CoreContext));
3038 core_ctx->daemon = pg->peers[i].daemon;
3039 /* Set back pointer to topology iteration context */
3040 core_ctx->iter_context = stats_context;
3041 GNUNET_SCHEDULER_add_now(pg->sched, &schedule_get_statistics, core_ctx);
3045 stats_context->total = total_count;
3050 * There are many ways to connect peers that are supported by this function.
3051 * To connect peers in the same topology that was created via the
3052 * GNUNET_TESTING_create_topology, the topology variable must be set to
3053 * GNUNET_TESTING_TOPOLOGY_NONE. If the topology variable is specified,
3054 * a new instance of that topology will be generated and attempted to be
3055 * connected. This could result in some connections being impossible,
3056 * because some topologies are non-deterministic.
3058 * @param pg the peer group struct representing the running peers
3059 * @param topology which topology to connect the peers in
3060 * @param options options for connecting the topology
3061 * @param option_modifier modifier for options that take a parameter
3062 * @return the number of connections that will be attempted, GNUNET_SYSERR on error
3065 GNUNET_TESTING_connect_topology (struct GNUNET_TESTING_PeerGroup *pg,
3066 enum GNUNET_TESTING_Topology topology,
3067 enum GNUNET_TESTING_TopologyOption options,
3068 double option_modifier)
3072 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
3073 #if VERBOSE_TOPOLOGY
3074 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3075 _("Creating clique CONNECT topology\n"));
3077 create_clique (pg, &add_actual_connections);
3079 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
3080 #if VERBOSE_TOPOLOGY
3081 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3082 _("Creating small world (ring) CONNECT topology\n"));
3084 create_small_world_ring (pg, &add_actual_connections);
3086 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
3087 #if VERBOSE_TOPOLOGY
3088 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3089 _("Creating small world (2d-torus) CONNECT topology\n"));
3091 create_small_world (pg, &add_actual_connections);
3093 case GNUNET_TESTING_TOPOLOGY_RING:
3094 #if VERBOSE_TOPOLOGY
3095 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3096 _("Creating ring CONNECT topology\n"));
3098 create_ring (pg, &add_actual_connections);
3100 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
3101 #if VERBOSE_TOPOLOGY
3102 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3103 _("Creating 2d torus CONNECT topology\n"));
3105 create_2d_torus (pg, &add_actual_connections);
3107 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
3108 #if VERBOSE_TOPOLOGY
3109 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3110 _("Creating Erdos-Renyi CONNECT topology\n"));
3112 create_erdos_renyi (pg, &add_actual_connections);
3114 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
3115 #if VERBOSE_TOPOLOGY
3116 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3117 _("Creating InterNAT CONNECT topology\n"));
3119 create_nated_internet (pg, &add_actual_connections);
3121 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
3122 #if VERBOSE_TOPOLOGY
3123 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3124 _("Creating Scale Free CONNECT topology\n"));
3126 create_scale_free (pg, &add_actual_connections);
3128 case GNUNET_TESTING_TOPOLOGY_LINE:
3129 #if VERBOSE_TOPOLOGY
3130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3131 _("Creating straight line CONNECT topology\n"));
3133 create_line (pg, &add_actual_connections);
3135 case GNUNET_TESTING_TOPOLOGY_NONE:
3136 #if VERBOSE_TOPOLOGY
3137 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3138 _("Creating no CONNECT topology\n"));
3140 copy_allowed_topology(pg);
3143 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
3144 _("Unknown topology specification, can't connect peers!\n"));
3145 return GNUNET_SYSERR;
3150 case GNUNET_TESTING_TOPOLOGY_OPTION_RANDOM:
3151 #if VERBOSE_TOPOLOGY
3152 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3153 _("Connecting random subset (%'.2f percent) of possible peers\n"), 100 * option_modifier);
3155 choose_random_connections(pg, option_modifier);
3157 case GNUNET_TESTING_TOPOLOGY_OPTION_MINIMUM:
3158 #if VERBOSE_TOPOLOGY
3159 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3160 _("Connecting a minimum of %u peers each (if possible)\n"), (unsigned int)option_modifier);
3162 choose_minimum(pg, (unsigned int)option_modifier);
3164 case GNUNET_TESTING_TOPOLOGY_OPTION_DFS:
3165 #if VERBOSE_TOPOLOGY
3166 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3167 _("Using DFS to connect a minimum of %u peers each (if possible)\n"), (unsigned int)option_modifier);
3169 perform_dfs(pg, (int)option_modifier);
3171 case GNUNET_TESTING_TOPOLOGY_OPTION_NONE:
3173 case GNUNET_TESTING_TOPOLOGY_OPTION_ALL:
3179 return connect_topology(pg);
3183 * Callback that is called whenever a hostkey is generated
3184 * for a peer. Call the real callback and decrement the
3185 * starting counter for the peergroup.
3187 * @param cls closure
3188 * @param id identifier for the daemon, NULL on error
3189 * @param d handle for the daemon
3190 * @param emsg error message (NULL on success)
3192 static void internal_hostkey_callback (void *cls,
3193 const struct GNUNET_PeerIdentity *id,
3194 struct GNUNET_TESTING_Daemon *d,
3197 struct InternalStartContext *internal_context = cls;
3198 internal_context->peer->pg->starting--;
3199 internal_context->peer->pg->started++;
3200 if (internal_context->hostkey_callback != NULL)
3201 internal_context->hostkey_callback(internal_context->hostkey_cls, id, d, emsg);
3202 else if (internal_context->peer->pg->started == internal_context->peer->pg->total)
3204 internal_context->peer->pg->started = 0; /* Internal startup may use this counter! */
3205 GNUNET_TESTING_daemons_continue_startup(internal_context->peer->pg);
3210 * Callback that is called whenever a peer has finished starting.
3211 * Call the real callback and decrement the starting counter
3212 * for the peergroup.
3214 * @param cls closure
3215 * @param id identifier for the daemon, NULL on error
3216 * @param d handle for the daemon
3217 * @param emsg error message (NULL on success)
3219 static void internal_startup_callback (void *cls,
3220 const struct GNUNET_PeerIdentity *id,
3221 const struct GNUNET_CONFIGURATION_Handle *cfg,
3222 struct GNUNET_TESTING_Daemon *d,
3225 struct InternalStartContext *internal_context = cls;
3226 internal_context->peer->pg->starting--;
3227 if (internal_context->start_cb != NULL)
3228 internal_context->start_cb(internal_context->start_cb_cls, id, cfg, d, emsg);
3232 internal_continue_startup (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
3234 struct InternalStartContext *internal_context = cls;
3236 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
3241 if (internal_context->peer->pg->starting < MAX_CONCURRENT_STARTING)
3243 internal_context->peer->pg->starting++;
3244 GNUNET_TESTING_daemon_continue_startup (internal_context->peer->daemon);
3248 GNUNET_SCHEDULER_add_delayed(internal_context->peer->pg->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &internal_continue_startup, internal_context);
3253 internal_start (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
3255 struct InternalStartContext *internal_context = cls;
3257 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
3262 if (internal_context->peer->pg->starting < MAX_CONCURRENT_HOSTKEYS)
3264 internal_context->peer->pg->starting++;
3265 internal_context->peer->daemon = GNUNET_TESTING_daemon_start (internal_context->peer->pg->sched,
3266 internal_context->peer->cfg,
3267 internal_context->timeout,
3268 internal_context->hostname,
3269 &internal_hostkey_callback,
3271 &internal_startup_callback,
3276 GNUNET_SCHEDULER_add_delayed(internal_context->peer->pg->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &internal_start, internal_context);
3281 * Function which continues a peer group starting up
3282 * after successfully generating hostkeys for each peer.
3284 * @param pg the peer group to continue starting
3288 GNUNET_TESTING_daemons_continue_startup(struct GNUNET_TESTING_PeerGroup *pg)
3293 for (i = 0; i < pg->total; i++)
3295 GNUNET_SCHEDULER_add_now (pg->sched, &internal_continue_startup, &pg->peers[i].internal_context);
3296 //GNUNET_TESTING_daemon_continue_startup(pg->peers[i].daemon);
3301 * Start count gnunet instances with the same set of transports and
3302 * applications. The port numbers (any option called "PORT") will be
3303 * adjusted to ensure that no two peers running on the same system
3304 * have the same port(s) in their respective configurations.
3306 * @param sched scheduler to use
3307 * @param cfg configuration template to use
3308 * @param total number of daemons to start
3309 * @param timeout total time allowed for peers to start
3310 * @param hostkey_callback function to call on each peers hostkey generation
3311 * if NULL, peers will be started by this call, if non-null,
3312 * GNUNET_TESTING_daemons_continue_startup must be called after
3313 * successful hostkey generation
3314 * @param hostkey_cls closure for hostkey callback
3315 * @param cb function to call on each daemon that was started
3316 * @param cb_cls closure for cb
3317 * @param connect_callback function to call each time two hosts are connected
3318 * @param connect_callback_cls closure for connect_callback
3319 * @param hostnames linked list of hosts to use to start peers on (NULL to run on localhost only)
3321 * @return NULL on error, otherwise handle to control peer group
3323 struct GNUNET_TESTING_PeerGroup *
3324 GNUNET_TESTING_daemons_start (struct GNUNET_SCHEDULER_Handle *sched,
3325 const struct GNUNET_CONFIGURATION_Handle *cfg,
3327 struct GNUNET_TIME_Relative timeout,
3328 GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback,
3330 GNUNET_TESTING_NotifyDaemonRunning cb,
3332 GNUNET_TESTING_NotifyConnection
3333 connect_callback, void *connect_callback_cls,
3334 const struct GNUNET_TESTING_Host *hostnames)
3336 struct GNUNET_TESTING_PeerGroup *pg;
3337 const struct GNUNET_TESTING_Host *hostpos;
3343 const char *hostname;
3344 char *baseservicehome;
3345 char *newservicehome;
3347 struct GNUNET_CONFIGURATION_Handle *pcfg;
3349 unsigned int hostcnt;
3359 pg = GNUNET_malloc (sizeof (struct GNUNET_TESTING_PeerGroup));
3362 pg->notify_connection = connect_callback;
3363 pg->notify_connection_cls = connect_callback_cls;
3365 pg->max_timeout = GNUNET_TIME_relative_to_absolute(timeout);
3366 pg->peers = GNUNET_malloc (total * sizeof (struct PeerData));
3367 if (NULL != hostnames)
3370 hostpos = hostnames;
3371 while (hostpos != NULL)
3373 hostpos = hostpos->next;
3376 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
3379 hostpos = hostnames;
3380 while (hostpos != NULL)
3382 pg->hosts[off].minport = LOW_PORT;
3383 pg->hosts[off++].hostname = GNUNET_strdup(hostpos->hostname);
3384 hostpos = hostpos->next;
3389 GNUNET_free (pg->hosts);
3397 /* skip leading spaces */
3398 while ((0 != *hostnames) && (isspace ( (unsigned char) *hostnames)))
3401 while ('\0' != *rpos)
3403 if (isspace ( (unsigned char) *rpos))
3407 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
3409 start = GNUNET_strdup (hostnames);
3411 while ('\0' != *pos)
3413 if (isspace ( (unsigned char) *pos))
3416 if (strlen (start) > 0)
3418 pg->hosts[off].minport = LOW_PORT;
3419 pg->hosts[off++].hostname = start;
3425 if (strlen (start) > 0)
3427 pg->hosts[off].minport = LOW_PORT;
3428 pg->hosts[off++].hostname = start;
3432 GNUNET_free (start);
3433 GNUNET_free (pg->hosts);
3437 minport = 0; /* make gcc happy */
3445 for (off = 0; off < total; off++)
3449 hostname = pg->hosts[off % hostcnt].hostname;
3450 pcfg = make_config (cfg,
3451 &pg->hosts[off % hostcnt].minport,
3458 pcfg = make_config (cfg,
3466 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3468 ("Could not create configuration for peer number %u on `%s'!\n"),
3469 off, hostname == NULL ? "localhost" : hostname);
3474 GNUNET_CONFIGURATION_get_value_string (pcfg, "PATHS", "SERVICEHOME",
3477 GNUNET_asprintf (&newservicehome,
3478 "%s/%d/", baseservicehome, off);
3479 GNUNET_free (baseservicehome);
3483 tmpdir = getenv ("TMPDIR");
3484 tmpdir = tmpdir ? tmpdir : "/tmp";
3485 GNUNET_asprintf (&newservicehome,
3488 "gnunet-testing-test-test", off);
3490 GNUNET_CONFIGURATION_set_value_string (pcfg,
3492 "SERVICEHOME", newservicehome);
3493 GNUNET_free (newservicehome);
3494 pg->peers[off].cfg = pcfg;
3495 pg->peers[off].allowed_peers = GNUNET_CONTAINER_multihashmap_create(total);
3496 pg->peers[off].connect_peers = GNUNET_CONTAINER_multihashmap_create(total);
3497 pg->peers[off].blacklisted_peers = GNUNET_CONTAINER_multihashmap_create(total);
3498 pg->peers[off].pg = pg;
3500 pg->peers[off].internal_context.peer = &pg->peers[off];
3501 pg->peers[off].internal_context.timeout = timeout;
3502 pg->peers[off].internal_context.hostname = hostname;
3503 pg->peers[off].internal_context.hostkey_callback = hostkey_callback;
3504 pg->peers[off].internal_context.hostkey_cls = hostkey_cls;
3505 pg->peers[off].internal_context.start_cb = cb;
3506 pg->peers[off].internal_context.start_cb_cls = cb_cls;
3508 GNUNET_SCHEDULER_add_now (sched, &internal_start, &pg->peers[off].internal_context);
3515 * Get a daemon by number, so callers don't have to do nasty
3516 * offsetting operation.
3518 struct GNUNET_TESTING_Daemon *
3519 GNUNET_TESTING_daemon_get (struct GNUNET_TESTING_PeerGroup *pg, unsigned int position)
3521 if (position < pg->total)
3522 return pg->peers[position].daemon;
3528 * Prototype of a function that will be called when a
3529 * particular operation was completed the testing library.
3531 * @param cls closure (a struct RestartContext)
3532 * @param id id of the peer that was restarted
3533 * @param cfg handle to the configuration of the peer
3534 * @param d handle to the daemon that was restarted
3535 * @param emsg NULL on success
3537 void restart_callback (void *cls,
3538 const struct GNUNET_PeerIdentity *id,
3539 const struct GNUNET_CONFIGURATION_Handle *cfg,
3540 struct GNUNET_TESTING_Daemon *d,
3543 struct RestartContext *restart_context = cls;
3547 restart_context->peers_restarted++;
3551 restart_context->peers_restart_failed++;
3554 if (restart_context->peers_restarted == restart_context->peer_group->total)
3556 restart_context->callback(restart_context->callback_cls, NULL);
3557 GNUNET_free(restart_context);
3559 else if (restart_context->peers_restart_failed + restart_context->peers_restarted == restart_context->peer_group->total)
3561 restart_context->callback(restart_context->callback_cls, "Failed to restart peers!");
3562 GNUNET_free(restart_context);
3568 * Callback for informing us about a successful
3569 * or unsuccessful churn stop call.
3571 * @param cls a ChurnContext
3572 * @param emsg NULL on success, non-NULL on failure
3576 churn_stop_callback (void *cls, const char *emsg)
3578 struct ChurnContext *churn_ctx = cls;
3579 unsigned int total_left;
3580 char *error_message;
3582 error_message = NULL;
3585 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
3586 "Churn stop callback failed with error `%s'\n", emsg);
3587 churn_ctx->num_failed_stop++;
3591 churn_ctx->num_to_stop--;
3595 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
3596 "Stopped peer, %d left.\n",
3597 churn_ctx->num_to_stop);
3599 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop) + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
3601 if (total_left == 0)
3603 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
3605 GNUNET_asprintf(&error_message,
3606 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
3607 churn_ctx->num_failed_start,
3608 churn_ctx->num_failed_stop);
3610 churn_ctx->cb(churn_ctx->cb_cls, error_message);
3611 GNUNET_free_non_null(error_message);
3612 GNUNET_free(churn_ctx);
3617 * Callback for informing us about a successful
3618 * or unsuccessful churn start call.
3620 * @param cls a ChurnContext
3621 * @param id the peer identity of the started peer
3622 * @param cfg the handle to the configuration of the peer
3623 * @param d handle to the daemon for the peer
3624 * @param emsg NULL on success, non-NULL on failure
3628 churn_start_callback (void *cls,
3629 const struct GNUNET_PeerIdentity *id,
3630 const struct GNUNET_CONFIGURATION_Handle *cfg,
3631 struct GNUNET_TESTING_Daemon *d,
3634 struct ChurnContext *churn_ctx = cls;
3635 unsigned int total_left;
3636 char *error_message;
3638 error_message = NULL;
3641 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3642 "Churn stop callback failed with error `%s'\n",
3644 churn_ctx->num_failed_start++;
3648 churn_ctx->num_to_start--;
3652 GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
3653 "Started peer, %d left.\n",
3654 churn_ctx->num_to_start);
3657 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop) + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
3659 if (total_left == 0)
3661 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
3662 GNUNET_asprintf(&error_message,
3663 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
3664 churn_ctx->num_failed_start,
3665 churn_ctx->num_failed_stop);
3666 churn_ctx->cb(churn_ctx->cb_cls, error_message);
3667 GNUNET_free_non_null(error_message);
3668 GNUNET_free(churn_ctx);
3674 * Simulate churn by stopping some peers (and possibly
3675 * re-starting others if churn is called multiple times). This
3676 * function can only be used to create leave-join churn (peers "never"
3677 * leave for good). First "voff" random peers that are currently
3678 * online will be taken offline; then "von" random peers that are then
3679 * offline will be put back online. No notifications will be
3680 * generated for any of these operations except for the callback upon
3683 * @param pg handle for the peer group
3684 * @param voff number of peers that should go offline
3685 * @param von number of peers that should come back online;
3686 * must be zero on first call (since "testbed_start"
3687 * always starts all of the peers)
3688 * @param timeout how long to wait for operations to finish before
3690 * @param cb function to call at the end
3691 * @param cb_cls closure for cb
3694 GNUNET_TESTING_daemons_churn (struct GNUNET_TESTING_PeerGroup *pg,
3697 struct GNUNET_TIME_Relative timeout,
3698 GNUNET_TESTING_NotifyCompletion cb,
3701 struct ChurnContext *churn_ctx;
3702 unsigned int running;
3703 unsigned int stopped;
3704 unsigned int total_running;
3705 unsigned int total_stopped;
3707 unsigned int *running_arr;
3708 unsigned int *stopped_arr;
3709 unsigned int *running_permute;
3710 unsigned int *stopped_permute;
3715 if ((von == 0) && (voff == 0)) /* No peers at all? */
3721 for (i = 0; i < pg->total; i++)
3723 if (pg->peers[i].daemon->running == GNUNET_YES)
3725 GNUNET_assert(running != -1);
3730 GNUNET_assert(stopped != -1);
3737 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Trying to stop more peers than are currently running!\n");
3738 cb(cb_cls, "Trying to stop more peers than are currently running!");
3744 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Trying to start more peers than are currently stopped!\n");
3745 cb(cb_cls, "Trying to start more peers than are currently stopped!");
3749 churn_ctx = GNUNET_malloc(sizeof(struct ChurnContext));
3753 running_arr = GNUNET_malloc(running * sizeof(unsigned int));
3757 stopped_arr = GNUNET_malloc(stopped * sizeof(unsigned int));
3759 running_permute = NULL;
3760 stopped_permute = NULL;
3763 running_permute = GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_WEAK, running);
3765 stopped_permute = GNUNET_CRYPTO_random_permute(GNUNET_CRYPTO_QUALITY_WEAK, stopped);
3767 total_running = running;
3768 total_stopped = stopped;
3772 churn_ctx->num_to_start = von;
3773 churn_ctx->num_to_stop = voff;
3775 churn_ctx->cb_cls = cb_cls;
3777 for (i = 0; i < pg->total; i++)
3779 if (pg->peers[i].daemon->running == GNUNET_YES)
3781 GNUNET_assert((running_arr != NULL) && (total_running > running));
3782 running_arr[running] = i;
3787 GNUNET_assert((stopped_arr != NULL) && (total_stopped > stopped));
3788 stopped_arr[stopped] = i;
3793 for (i = 0; i < voff; i++)
3796 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Stopping peer %d!\n", running_permute[i]);
3798 GNUNET_TESTING_daemon_stop (pg->peers[running_arr[running_permute[i]]].daemon,
3800 &churn_stop_callback, churn_ctx,
3801 GNUNET_NO, GNUNET_YES);
3804 for (i = 0; i < von; i++)
3807 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Starting up peer %d!\n", stopped_permute[i]);
3809 GNUNET_TESTING_daemon_start_stopped(pg->peers[stopped_arr[stopped_permute[i]]].daemon,
3810 timeout, &churn_start_callback, churn_ctx);
3813 GNUNET_free_non_null(running_arr);
3814 GNUNET_free_non_null(stopped_arr);
3815 GNUNET_free_non_null(running_permute);
3816 GNUNET_free_non_null(stopped_permute);
3821 * Restart all peers in the given group.
3823 * @param pg the handle to the peer group
3824 * @param callback function to call on completion (or failure)
3825 * @param callback_cls closure for the callback function
3828 GNUNET_TESTING_daemons_restart (struct GNUNET_TESTING_PeerGroup *pg,
3829 GNUNET_TESTING_NotifyCompletion callback,
3832 struct RestartContext *restart_context;
3837 restart_context = GNUNET_malloc(sizeof(struct RestartContext));
3838 restart_context->peer_group = pg;
3839 restart_context->peers_restarted = 0;
3840 restart_context->callback = callback;
3841 restart_context->callback_cls = callback_cls;
3843 for (off = 0; off < pg->total; off++)
3845 GNUNET_TESTING_daemon_restart (pg->peers[off].daemon, &restart_callback, restart_context);
3851 * Start or stop an individual peer from the given group.
3853 * @param pg handle to the peer group
3854 * @param offset which peer to start or stop
3855 * @param desired_status GNUNET_YES to have it running, GNUNET_NO to stop it
3856 * @param timeout how long to wait for shutdown
3857 * @param cb function to call at the end
3858 * @param cb_cls closure for cb
3861 GNUNET_TESTING_daemons_vary (struct GNUNET_TESTING_PeerGroup *pg,
3862 unsigned int offset,
3864 struct GNUNET_TIME_Relative timeout,
3865 GNUNET_TESTING_NotifyCompletion cb,
3868 struct ChurnContext *churn_ctx;
3870 if (GNUNET_NO == desired_status)
3872 if (NULL != pg->peers[offset].daemon)
3874 churn_ctx = GNUNET_malloc(sizeof(struct ChurnContext));
3875 churn_ctx->num_to_start = 0;
3876 churn_ctx->num_to_stop = 1;
3878 churn_ctx->cb_cls = cb_cls;
3879 GNUNET_TESTING_daemon_stop(pg->peers[offset].daemon,
3880 timeout, &churn_stop_callback, churn_ctx,
3881 GNUNET_NO, GNUNET_YES);
3884 else if (GNUNET_YES == desired_status)
3886 if (NULL == pg->peers[offset].daemon)
3888 churn_ctx = GNUNET_malloc(sizeof(struct ChurnContext));
3889 churn_ctx->num_to_start = 1;
3890 churn_ctx->num_to_stop = 0;
3892 churn_ctx->cb_cls = cb_cls;
3893 GNUNET_TESTING_daemon_start_stopped(pg->peers[offset].daemon,
3894 timeout, &churn_start_callback, churn_ctx);
3903 * Callback for shutting down peers in a peer group.
3905 * @param cls closure (struct ShutdownContext)
3906 * @param emsg NULL on success
3908 void internal_shutdown_callback (void *cls,
3911 struct ShutdownContext *shutdown_ctx = cls;
3913 shutdown_ctx->outstanding--;
3916 shutdown_ctx->peers_down++;
3920 shutdown_ctx->peers_failed++;
3923 if ((shutdown_ctx->cb != NULL) && (shutdown_ctx->peers_down + shutdown_ctx->peers_failed == shutdown_ctx->total_peers))
3925 if (shutdown_ctx->peers_failed > 0)
3926 shutdown_ctx->cb(shutdown_ctx->cb_cls, "Not all peers successfully shut down!");
3928 shutdown_ctx->cb(shutdown_ctx->cb_cls, NULL);
3929 GNUNET_free(shutdown_ctx);
3934 * Individual shutdown context for a particular peer.
3936 struct PeerShutdownContext
3939 * Pointer to the high level shutdown context.
3941 struct ShutdownContext *shutdown_ctx;
3944 * The daemon handle for the peer to shut down.
3946 struct GNUNET_TESTING_Daemon *daemon;
3950 * Task to rate limit the number of outstanding peer shutdown
3951 * requests. This is necessary for making sure we don't do
3952 * too many ssh connections at once, but is generally nicer
3953 * to any system as well (graduated task starts, as opposed
3954 * to calling gnunet-arm N times all at once).
3957 schedule_shutdown_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
3959 struct PeerShutdownContext *peer_shutdown_ctx = cls;
3960 struct ShutdownContext *shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
3962 GNUNET_assert(peer_shutdown_ctx != NULL);
3963 GNUNET_assert(shutdown_ctx != NULL);
3965 if (shutdown_ctx->outstanding > MAX_CONCURRENT_SHUTDOWN)
3966 GNUNET_SCHEDULER_add_delayed(peer_shutdown_ctx->daemon->sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MILLISECONDS, 100), &schedule_shutdown_task, peer_shutdown_ctx);
3969 shutdown_ctx->outstanding++;
3970 GNUNET_TESTING_daemon_stop (peer_shutdown_ctx->daemon, shutdown_ctx->timeout, &internal_shutdown_callback, shutdown_ctx, GNUNET_YES, GNUNET_NO);
3971 GNUNET_free(peer_shutdown_ctx);
3975 * Shutdown all peers started in the given group.
3977 * @param pg handle to the peer group
3978 * @param timeout how long to wait for shutdown
3979 * @param cb callback to notify upon success or failure
3980 * @param cb_cls closure for cb
3983 GNUNET_TESTING_daemons_stop (struct GNUNET_TESTING_PeerGroup *pg,
3984 struct GNUNET_TIME_Relative timeout,
3985 GNUNET_TESTING_NotifyCompletion cb,
3989 struct ShutdownContext *shutdown_ctx;
3990 struct PeerShutdownContext *peer_shutdown_ctx;
3992 GNUNET_assert(pg->total > 0);
3994 shutdown_ctx = GNUNET_malloc(sizeof(struct ShutdownContext));
3995 shutdown_ctx->cb = cb;
3996 shutdown_ctx->cb_cls = cb_cls;
3997 shutdown_ctx->total_peers = pg->total;
3998 shutdown_ctx->timeout = timeout;
3999 /* shtudown_ctx->outstanding = 0; */
4001 for (off = 0; off < pg->total; off++)
4003 GNUNET_assert(NULL != pg->peers[off].daemon);
4004 peer_shutdown_ctx = GNUNET_malloc(sizeof(struct PeerShutdownContext));
4005 peer_shutdown_ctx->daemon = pg->peers[off].daemon;
4006 peer_shutdown_ctx->shutdown_ctx = shutdown_ctx;
4007 GNUNET_SCHEDULER_add_now(pg->peers[off].daemon->sched, &schedule_shutdown_task, peer_shutdown_ctx);
4008 //GNUNET_TESTING_daemon_stop (pg->peers[off].daemon, timeout, shutdown_cb, shutdown_ctx, GNUNET_YES, GNUNET_NO);
4009 if (NULL != pg->peers[off].cfg)
4010 GNUNET_CONFIGURATION_destroy (pg->peers[off].cfg);
4011 if (pg->peers[off].allowed_peers != NULL)
4012 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[off].allowed_peers);
4013 if (pg->peers[off].connect_peers != NULL)
4014 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[off].connect_peers);
4015 if (pg->peers[off].blacklisted_peers != NULL)
4016 GNUNET_CONTAINER_multihashmap_destroy(pg->peers[off].blacklisted_peers);
4018 GNUNET_free (pg->peers);
4019 if (NULL != pg->hosts)
4021 GNUNET_free (pg->hosts[0].hostname);
4022 GNUNET_free (pg->hosts);
4028 /* end of testing_group.c */