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
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file testing/testing_group.c
23 * @brief convenience API for writing testcases for GNUnet
24 * @author Nathan Evans
25 * @author Christian Grothoff
29 #include "gnunet_constants.h"
30 #include "gnunet_arm_service.h"
31 #include "gnunet_testing_lib.h"
32 #include "gnunet_core_service.h"
34 #define VERBOSE_TESTING GNUNET_NO
36 #define VERBOSE_TOPOLOGY GNUNET_NO
38 #define DEBUG_CHURN GNUNET_NO
40 #define USE_START_HELPER GNUNET_YES
44 /* Before connecting peers, send all of the HELLOs */
45 #define USE_SEND_HELLOS GNUNET_NO
47 #define TOPOLOGY_HACK GNUNET_YES
51 * Lowest port used for GNUnet testing. Should be high enough to not
52 * conflict with other applications running on the hosts but be low
53 * enough to not conflict with client-ports (typically starting around
56 #define LOW_PORT 12000
59 * Highest port used for GNUnet testing. Should be low enough to not
60 * conflict with the port range for "local" ports (client apps; see
61 * /proc/sys/net/ipv4/ip_local_port_range on Linux for example).
63 #define HIGH_PORT 56000
65 /* Maximum time to delay connect attempt */
66 #define MAX_CONNECT_DELAY 300
69 * Which list of peers do we need to modify?
73 /** Modify allowed peers */
76 /** Modify connect peers */
79 /** Modify blacklist peers */
82 /** Modify workingset peers */
87 * Prototype of a function called whenever two peers would be connected
88 * in a certain topology.
91 (*GNUNET_TESTING_ConnectionProcessor)(struct GNUNET_TESTING_PeerGroup * pg,
92 unsigned int first, unsigned int second,
93 enum PeerLists list, unsigned int check);
96 * Context for handling churning a peer group
101 * The peergroup we are dealing with.
103 struct GNUNET_TESTING_PeerGroup *pg;
106 * Callback used to notify of churning finished
108 GNUNET_TESTING_NotifyCompletion cb;
111 * Closure for callback
116 * Number of peers that still need to be started
118 unsigned int num_to_start;
121 * Number of peers that still need to be stopped
123 unsigned int num_to_stop;
126 * Number of peers that failed to start
128 unsigned int num_failed_start;
131 * Number of peers that failed to stop
133 unsigned int num_failed_stop;
136 struct RestartContext
139 * The group of peers being restarted
141 struct GNUNET_TESTING_PeerGroup *peer_group;
144 * How many peers have been restarted thus far
146 unsigned int peers_restarted;
149 * How many peers got an error when restarting
151 unsigned int peers_restart_failed;
154 * The function to call once all peers have been restarted
156 GNUNET_TESTING_NotifyCompletion callback;
159 * Closure for callback function
165 struct SendHelloContext
168 * Global handle to the peer group.
170 struct GNUNET_TESTING_PeerGroup *pg;
173 * The data about this specific peer.
175 struct PeerData *peer;
178 * The next HELLO that needs sent to this peer.
180 struct PeerConnection *peer_pos;
183 * Are we connected to CORE yet?
185 unsigned int core_ready;
188 * How many attempts should we make for failed connections?
190 unsigned int connect_attempts;
193 * Task for scheduling core connect requests to be sent.
195 GNUNET_SCHEDULER_TaskIdentifier core_connect_task;
198 struct ShutdownContext
200 struct GNUNET_TESTING_PeerGroup *pg;
202 * Total peers to wait for
204 unsigned int total_peers;
207 * Number of peers successfully shut down
209 unsigned int peers_down;
212 * Number of peers failed to shut down
214 unsigned int peers_failed;
217 * Number of peers we have started shutting
218 * down. If too many, wait on them.
220 unsigned int outstanding;
223 * Timeout for shutdown.
225 struct GNUNET_TIME_Relative timeout;
228 * Callback to call when all peers either
229 * shutdown or failed to shutdown
231 GNUNET_TESTING_NotifyCompletion cb;
240 * Individual shutdown context for a particular peer.
242 struct PeerShutdownContext
245 * Pointer to the high level shutdown context.
247 struct ShutdownContext *shutdown_ctx;
250 * The daemon handle for the peer to shut down.
252 struct GNUNET_TESTING_Daemon *daemon;
256 * Individual shutdown context for a particular peer.
258 struct PeerRestartContext
261 * Pointer to the high level restart context.
263 struct ChurnRestartContext *churn_restart_ctx;
266 * The daemon handle for the peer to shut down.
268 struct GNUNET_TESTING_Daemon *daemon;
271 struct CreateTopologyContext
275 * Function to call with number of connections
277 GNUNET_TESTING_NotifyConnections cont;
280 * Closure for connection notification
287 /** Waiting to read number of peers */
290 /** Should find next peer index */
293 /** Should find colon */
296 /** Should read other peer index, space, or endline */
301 struct PeerConnection
306 struct PeerConnection *prev;
311 struct PeerConnection *next;
314 * Index of daemon in pg->peers
321 struct InternalStartContext
324 * Pointer to peerdata
326 struct PeerData *peer;
329 * Timeout for peer startup
331 struct GNUNET_TIME_Relative timeout;
334 * Client callback for hostkey notification
336 GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback;
339 * Closure for hostkey_callback
344 * Client callback for peer start notification
346 GNUNET_TESTING_NotifyDaemonRunning start_cb;
354 * Hostname, where to start the peer
356 const char *hostname;
359 * Username to use when connecting to the
362 const char *username;
365 * Pointer to starting memory location of a hostkey
370 * Port to use for ssh.
376 struct ChurnRestartContext
379 * PeerGroup that we are working with.
381 struct GNUNET_TESTING_PeerGroup *pg;
384 * Number of restarts currently in flight.
386 unsigned int outstanding;
389 * Handle to the underlying churn context.
391 struct ChurnContext *churn_ctx;
394 * How long to allow the operation to take.
396 struct GNUNET_TIME_Relative timeout;
399 struct OutstandingSSH
401 struct OutstandingSSH *next;
403 struct OutstandingSSH *prev;
406 * Number of current ssh connections.
408 uint32_t outstanding;
411 * The hostname of this peer.
413 const char *hostname;
417 * Data we keep per peer.
422 * (Initial) configuration of the host.
423 * (initial because clients could change
424 * it and we would not know about those
427 struct GNUNET_CONFIGURATION_Handle *cfg;
430 * Handle for controlling the daemon.
432 struct GNUNET_TESTING_Daemon *daemon;
435 * The peergroup this peer belongs to.
437 struct GNUNET_TESTING_PeerGroup *pg;
441 * Linked list of allowed peer connections.
443 struct PeerConnection *allowed_peers_head;
446 * Linked list of allowed peer connections.
448 struct PeerConnection *allowed_peers_tail;
451 * Linked list of blacklisted peer connections.
453 struct PeerConnection *blacklisted_peers_head;
456 * Linked list of blacklisted peer connections.
458 struct PeerConnection *blacklisted_peers_tail;
461 * Linked list of connect peer connections.
463 struct PeerConnection *connect_peers_head;
466 * Linked list of connect peer connections.
468 struct PeerConnection *connect_peers_tail;
471 * Linked list of connect peer connections.
473 struct PeerConnection *connect_peers_working_set_head;
476 * Linked list of connect peer connections.
478 struct PeerConnection *connect_peers_working_set_tail;
482 * Hash map of allowed peer connections (F2F created topology)
484 struct GNUNET_CONTAINER_MultiHashMap *allowed_peers;
487 * Hash map of blacklisted peers
489 struct GNUNET_CONTAINER_MultiHashMap *blacklisted_peers;
492 * Hash map of peer connections
494 struct GNUNET_CONTAINER_MultiHashMap *connect_peers;
497 * Temporary hash map of peer connections
499 struct GNUNET_CONTAINER_MultiHashMap *connect_peers_working_set;
503 * Temporary variable for topology creation, should be reset before
504 * creating any topology so the count is valid once finished.
509 * Context to keep track of peers being started, to
510 * stagger hostkey generation and peer startup.
512 struct InternalStartContext internal_context;
516 * Linked list of per-host data.
526 * SSH username to use when connecting to this host.
531 * SSH port to use when connecting to this host.
536 * Lowest port that we have not yet used
542 struct TopologyIterateContext
545 * The peergroup we are working with.
547 struct GNUNET_TESTING_PeerGroup *pg;
550 * Callback for notifying of two connected peers.
552 GNUNET_TESTING_NotifyTopology topology_cb;
555 * Closure for topology_cb
560 * Number of peers currently connected to.
562 unsigned int connected;
565 * Number of peers we have finished iterating.
567 unsigned int completed;
570 * Number of peers total.
575 struct StatsIterateContext
578 * The peergroup that we are dealing with.
580 struct GNUNET_TESTING_PeerGroup *pg;
583 * Continuation to call once all stats information has been retrieved.
585 GNUNET_STATISTICS_Callback cont;
588 * Proc function to call on each value received.
590 GNUNET_TESTING_STATISTICS_Iterator proc;
593 * Closure for topology_cb
598 * Number of peers currently connected to.
600 unsigned int connected;
603 * Number of peers we have finished iterating.
605 unsigned int completed;
608 * Number of peers total.
616 struct GNUNET_TESTING_Daemon *daemon;
619 struct StatsCoreContext
622 struct GNUNET_TESTING_Daemon *daemon;
624 * Handle to the statistics service.
626 struct GNUNET_STATISTICS_Handle *stats_handle;
629 * Handle for getting statistics.
631 struct GNUNET_STATISTICS_GetHandle *stats_get_handle;
634 struct ConnectTopologyContext
637 * How many connections are left to create.
639 unsigned int remaining_connections;
642 * Handle to group of peers.
644 struct GNUNET_TESTING_PeerGroup *pg;
647 * How long to try this connection before timing out.
649 struct GNUNET_TIME_Relative connect_timeout;
652 * How many times to retry connecting the two peers.
654 unsigned int connect_attempts;
657 * Temp value set for each iteration.
659 //struct PeerData *first;
662 * Notification that all peers are connected.
664 GNUNET_TESTING_NotifyCompletion notify_connections_done;
667 * Closure for notify.
673 * Handle to a group of GNUnet peers.
675 struct GNUNET_TESTING_PeerGroup
678 * Configuration template.
680 const struct GNUNET_CONFIGURATION_Handle *cfg;
683 * Function to call on each started daemon.
685 //GNUNET_TESTING_NotifyDaemonRunning cb;
693 * Function to call on each topology connection created
695 GNUNET_TESTING_NotifyConnection notify_connection;
698 * Callback for notify_connection
700 void *notify_connection_cls;
703 * Array of information about hosts.
705 struct HostData *hosts;
708 * Number of hosts (size of HostData)
710 unsigned int num_hosts;
713 * Array of "total" peers.
715 struct PeerData *peers;
718 * Number of peers in this group.
723 * At what time should we fail the peer startup process?
725 struct GNUNET_TIME_Absolute max_timeout;
728 * How many peers are being started right now?
730 unsigned int starting;
733 * How many peers have already been started?
735 unsigned int started;
738 * Number of possible connections to peers
741 unsigned int max_outstanding_connections;
744 * Number of ssh connections to peers (max).
746 unsigned int max_concurrent_ssh;
749 * Number of connects we are waiting on, allows us to rate limit
752 unsigned int outstanding_connects;
755 * Number of HELLOs we have yet to send.
757 unsigned int remaining_hellos;
760 * How many connects have already been scheduled?
762 unsigned int total_connects_scheduled;
765 * Hostkeys loaded from a file.
770 * Head of DLL to keep track of the number of outstanding
771 * ssh connections per peer.
773 struct OutstandingSSH *ssh_head;
776 * Tail of DLL to keep track of the number of outstanding
777 * ssh connections per peer.
779 struct OutstandingSSH *ssh_tail;
782 * Stop scheduling peers connecting.
784 unsigned int stop_connects;
787 * Connection context for peer group.
789 struct ConnectTopologyContext ct_ctx;
795 * The altered configuration.
797 struct GNUNET_CONFIGURATION_Handle *ret;
800 * The original configuration to alter.
802 const struct GNUNET_CONFIGURATION_Handle *orig;
805 * The hostname that this peer will run on.
807 const char *hostname;
810 * The next possible port to assign.
815 * Unique number for unix domain sockets.
820 * Unique number for this peer/host to offset
821 * things that are grouped by host.
826 struct ConnectContext
829 * Index of peer to connect second to.
831 uint32_t first_index;
834 * Index of peer to connect first to.
836 uint32_t second_index;
839 * Higher level topology connection context.
841 struct ConnectTopologyContext *ct_ctx;
844 * Whether this connection has been accounted for in the schedule_connect call.
849 struct UnblacklistContext
854 struct GNUNET_TESTING_PeerGroup *pg;
857 * uid of the first peer
867 struct GNUNET_TESTING_PeerGroup *pg;
870 * uid of the first peer
875 * Peer data for first peer.
877 struct PeerData *first;
880 * Random percentage to use
885 struct MinimumContext
890 struct GNUNET_TESTING_PeerGroup *pg;
893 * uid of the first peer
898 * Peer data for first peer.
900 struct PeerData *first;
903 * Number of conns per peer
905 unsigned int num_to_add;
908 * Permuted array of all possible connections. Only add the Nth
909 * peer if it's in the Nth position.
911 unsigned int *pg_array;
914 * What number is the current element we are iterating over?
916 unsigned int current;
924 struct GNUNET_TESTING_PeerGroup *pg;
927 * uid of the first peer
932 * uid of the second peer
937 * Peer data for first peer.
939 struct PeerData *first;
942 * Which peer has been chosen as the one to add?
947 * What number is the current element we are iterating over?
949 unsigned int current;
953 * Simple struct to keep track of progress, and print a
954 * nice little percentage meter for long running tasks.
964 unsigned int completed;
968 char *startup_string;
973 * Convert unique ID to hash code.
975 * @param uid unique ID to convert
976 * @param hash set to uid (extended with zeros)
979 hash_from_uid (uint32_t uid, GNUNET_HashCode * hash)
981 memset (hash, 0, sizeof (GNUNET_HashCode));
982 *((uint32_t *) hash) = uid;
986 * Convert hash code to unique ID.
988 * @param uid unique ID to convert
989 * @param hash set to uid (extended with zeros)
992 uid_from_hash (const GNUNET_HashCode * hash, uint32_t * uid)
994 memcpy (uid, hash, sizeof (uint32_t));
999 static struct GNUNET_CORE_MessageHandler no_handlers[] =
1005 * Create a meter to keep track of the progress of some task.
1007 * @param total the total number of items to complete
1008 * @param start_string a string to prefix the meter with (if printing)
1009 * @param print GNUNET_YES to print the meter, GNUNET_NO to count
1012 * @return the progress meter
1014 static struct ProgressMeter *
1015 create_meter(unsigned int total, char * start_string, int print)
1017 struct ProgressMeter *ret;
1018 ret = GNUNET_malloc(sizeof(struct ProgressMeter));
1021 ret->modnum = total / 4;
1022 if (ret->modnum == 0) /* Divide by zero check */
1024 ret->dotnum = (total / 50) + 1;
1025 if (start_string != NULL)
1026 ret->startup_string = GNUNET_strdup(start_string);
1028 ret->startup_string = GNUNET_strdup("");
1034 * Update progress meter (increment by one).
1036 * @param meter the meter to update and print info for
1038 * @return GNUNET_YES if called the total requested,
1039 * GNUNET_NO if more items expected
1042 update_meter(struct ProgressMeter *meter)
1044 if (meter->print == GNUNET_YES)
1046 if (meter->completed % meter->modnum == 0)
1048 if (meter->completed == 0)
1050 fprintf (stdout, "%sProgress: [0%%", meter->startup_string);
1053 fprintf (stdout, "%d%%", (int) (((float) meter->completed
1054 / meter->total) * 100));
1056 else if (meter->completed % meter->dotnum == 0)
1057 fprintf (stdout, ".");
1059 if (meter->completed + 1 == meter->total)
1060 fprintf (stdout, "%d%%]\n", 100);
1065 if (meter->completed == meter->total)
1067 if (meter->completed > meter->total)
1068 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Progress meter overflow!!\n");
1073 * Reset progress meter.
1075 * @param meter the meter to reset
1077 * @return GNUNET_YES if meter reset,
1078 * GNUNET_SYSERR on error
1081 reset_meter(struct ProgressMeter *meter)
1084 return GNUNET_SYSERR;
1086 meter->completed = 0;
1091 * Release resources for meter
1093 * @param meter the meter to free
1096 free_meter(struct ProgressMeter *meter)
1098 GNUNET_free_non_null (meter->startup_string);
1099 GNUNET_free (meter);
1103 * Get a topology from a string input.
1105 * @param topology where to write the retrieved topology
1106 * @param topology_string The string to attempt to
1107 * get a configuration value from
1108 * @return GNUNET_YES if topology string matched a
1109 * known topology, GNUNET_NO if not
1112 GNUNET_TESTING_topology_get(enum GNUNET_TESTING_Topology *topology,
1113 const char *topology_string)
1116 * Strings representing topologies in enum
1118 static const char *topology_strings[] =
1121 * A clique (everyone connected to everyone else).
1126 * Small-world network (2d torus plus random links).
1131 * Small-world network (ring plus random links).
1151 * Certain percentage of peers are unable to communicate directly
1152 * replicating NAT conditions
1157 * Scale free topology.
1162 * Straight line topology.
1167 * All peers are disconnected.
1172 * Read the topology from a file.
1179 if (topology_string == NULL)
1181 while (topology_strings[curr] != NULL)
1183 if (strcasecmp (topology_strings[curr], topology_string) == 0)
1190 *topology = GNUNET_TESTING_TOPOLOGY_NONE;
1195 * Get connect topology option from string input.
1197 * @param topology_option where to write the retrieved topology
1198 * @param topology_string The string to attempt to
1199 * get a configuration value from
1200 * @return GNUNET_YES if string matched a known
1201 * topology option, GNUNET_NO if not
1204 GNUNET_TESTING_topology_option_get(
1205 enum GNUNET_TESTING_TopologyOption *topology_option,
1206 const char *topology_string)
1209 * Options for connecting a topology as strings.
1211 static const char *topology_option_strings[] =
1214 * Try to connect all peers specified in the topology.
1219 * Choose a random subset of connections to create.
1221 "CONNECT_RANDOM_SUBSET",
1224 * Create at least X connections for each peer.
1229 * Using a depth first search, create one connection
1230 * per peer. If any are missed (graph disconnected)
1231 * start over at those peers until all have at least one
1237 * Find the N closest peers to each allowed peer in the
1238 * topology and make sure a connection to those peers
1239 * exists in the connect topology.
1244 * No options specified.
1251 if (topology_string == NULL)
1253 while (NULL != topology_option_strings[curr])
1255 if (strcasecmp (topology_option_strings[curr], topology_string) == 0)
1257 *topology_option = curr;
1262 *topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_NONE;
1267 * Function to iterate over options. Copies
1268 * the options to the target configuration,
1269 * updating PORT values as needed.
1271 * @param cls closure
1272 * @param section name of the section
1273 * @param option name of the option
1274 * @param value value of the option
1277 update_config(void *cls, const char *section, const char *option,
1280 struct UpdateContext *ctx = cls;
1284 char *single_variable;
1285 char *per_host_variable;
1286 unsigned long long num_per_host;
1288 GNUNET_asprintf (&single_variable, "single_%s_per_host", section);
1289 GNUNET_asprintf (&per_host_variable, "num_%s_per_host", section);
1291 if ((0 == strcmp (option, "PORT")) && (1 == sscanf (value, "%u", &ival)))
1293 if ((ival != 0) && (GNUNET_YES
1294 != GNUNET_CONFIGURATION_get_value_yesno (ctx->orig, "testing",
1297 GNUNET_snprintf (cval, sizeof(cval), "%u", ctx->nport++);
1300 else if ((ival != 0) && (GNUNET_YES
1301 == GNUNET_CONFIGURATION_get_value_yesno (ctx->orig, "testing",
1303 && GNUNET_CONFIGURATION_get_value_number (ctx->orig, "testing",
1307 GNUNET_snprintf (cval, sizeof(cval), "%u", ival + ctx->fdnum
1313 if (0 == strcmp (option, "UNIXPATH"))
1315 if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_yesno (ctx->orig,
1319 GNUNET_snprintf (uval, sizeof(uval), "/tmp/test-service-%s-%u",
1320 section, ctx->upnum++);
1323 else if ((GNUNET_YES
1324 == GNUNET_CONFIGURATION_get_value_number (ctx->orig, "testing",
1327 && (num_per_host > 0))
1330 GNUNET_snprintf (uval, sizeof(uval), "/tmp/test-service-%s-%u",
1331 section, ctx->fdnum % num_per_host);
1336 if ((0 == strcmp (option, "HOSTNAME")) && (ctx->hostname != NULL))
1338 value = ctx->hostname;
1340 GNUNET_free (single_variable);
1341 GNUNET_free (per_host_variable);
1342 GNUNET_CONFIGURATION_set_value_string (ctx->ret, section, option, value);
1346 * Create a new configuration using the given configuration
1347 * as a template; however, each PORT in the existing cfg
1348 * must be renumbered by incrementing "*port". If we run
1349 * out of "*port" numbers, return NULL.
1351 * @param cfg template configuration
1352 * @param off the current peer offset
1353 * @param port port numbers to use, update to reflect
1354 * port numbers that were used
1355 * @param upnum number to make unix domain socket names unique
1356 * @param hostname hostname of the controlling host, to allow control connections from
1357 * @param fdnum number used to offset the unix domain socket for grouped processes
1358 * (such as statistics or peerinfo, which can be shared among others)
1360 * @return new configuration, NULL on error
1362 static struct GNUNET_CONFIGURATION_Handle *
1363 make_config(const struct GNUNET_CONFIGURATION_Handle *cfg, uint32_t off,
1364 uint16_t * port, uint32_t * upnum, const char *hostname,
1367 struct UpdateContext uc;
1370 char *allowed_hosts;
1376 uc.ret = GNUNET_CONFIGURATION_create ();
1377 uc.hostname = hostname;
1380 GNUNET_CONFIGURATION_iterate (cfg, &update_config, &uc);
1381 if (uc.nport >= HIGH_PORT)
1384 GNUNET_CONFIGURATION_destroy (uc.ret);
1388 if (GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "control_host",
1389 &control_host) == GNUNET_OK)
1391 if (hostname != NULL)
1392 GNUNET_asprintf (&allowed_hosts, "%s; 127.0.0.1; %s;", control_host,
1395 GNUNET_asprintf (&allowed_hosts, "%s; 127.0.0.1;", control_host);
1397 GNUNET_CONFIGURATION_set_value_string (uc.ret, "core", "ACCEPT_FROM",
1399 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport",
1400 "ACCEPT_FROM", allowed_hosts);
1401 GNUNET_CONFIGURATION_set_value_string (uc.ret, "dht", "ACCEPT_FROM",
1403 GNUNET_CONFIGURATION_set_value_string (uc.ret, "statistics",
1404 "ACCEPT_FROM", allowed_hosts);
1406 GNUNET_CONFIGURATION_set_value_string (uc.ret, "core", "UNIXPATH", "");
1407 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport", "UNIXPATH",
1409 GNUNET_CONFIGURATION_set_value_string (uc.ret, "dht", "UNIXPATH", "");
1410 GNUNET_CONFIGURATION_set_value_string (uc.ret, "statistics", "UNIXPATH",
1413 GNUNET_free_non_null (control_host);
1414 GNUNET_free (allowed_hosts);
1417 /* arm needs to know to allow connections from the host on which it is running,
1418 * otherwise gnunet-arm is unable to connect to it in some instances */
1419 if (hostname != NULL)
1421 GNUNET_asprintf (&allowed_hosts, "%s; 127.0.0.1;", hostname);
1422 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "BINDTO",
1424 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "BINDTO",
1426 GNUNET_CONFIGURATION_set_value_string (uc.ret, "arm", "ACCEPT_FROM",
1428 GNUNET_free (allowed_hosts);
1432 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "BINDTO",
1434 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "BINDTO",
1438 *port = (uint16_t) uc.nport;
1446 * Remove entries from the peer connection list
1448 * @param pg the peer group we are working with
1449 * @param first index of the first peer
1450 * @param second index of the second peer
1451 * @param list the peer list to use
1452 * @param check UNUSED
1454 * @return the number of connections added (can be 0, 1 or 2)
1458 remove_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first,
1459 unsigned int second, enum PeerLists list, unsigned int check)
1463 struct PeerConnection **first_list;
1464 struct PeerConnection **second_list;
1465 struct PeerConnection *first_iter;
1466 struct PeerConnection *second_iter;
1467 struct PeerConnection **first_tail;
1468 struct PeerConnection **second_tail;
1471 GNUNET_HashCode hash_first;
1472 GNUNET_HashCode hash_second;
1474 hash_from_uid (first, &hash_first);
1475 hash_from_uid (second, &hash_second);
1483 first_list = &pg->peers[first].allowed_peers_head;
1484 second_list = &pg->peers[second].allowed_peers_head;
1485 first_tail = &pg->peers[first].allowed_peers_tail;
1486 second_tail = &pg->peers[second].allowed_peers_tail;
1489 first_list = &pg->peers[first].connect_peers_head;
1490 second_list = &pg->peers[second].connect_peers_head;
1491 first_tail = &pg->peers[first].connect_peers_tail;
1492 second_tail = &pg->peers[second].connect_peers_tail;
1495 first_list = &pg->peers[first].blacklisted_peers_head;
1496 second_list = &pg->peers[second].blacklisted_peers_head;
1497 first_tail = &pg->peers[first].blacklisted_peers_tail;
1498 second_tail = &pg->peers[second].blacklisted_peers_tail;
1501 first_list = &pg->peers[first].connect_peers_working_set_head;
1502 second_list = &pg->peers[second].connect_peers_working_set_head;
1503 first_tail = &pg->peers[first].connect_peers_working_set_tail;
1504 second_tail = &pg->peers[second].connect_peers_working_set_tail;
1511 first_iter = *first_list;
1512 while (first_iter != NULL)
1514 if (first_iter->index == second)
1516 GNUNET_CONTAINER_DLL_remove(*first_list, *first_tail, first_iter);
1517 GNUNET_free(first_iter);
1521 first_iter = first_iter->next;
1524 second_iter = *second_list;
1525 while (second_iter != NULL)
1527 if (second_iter->index == first)
1529 GNUNET_CONTAINER_DLL_remove(*second_list, *second_tail, second_iter);
1530 GNUNET_free(second_iter);
1534 second_iter = second_iter->next;
1538 GNUNET_CONTAINER_multihashmap_contains (pg->peers[first].blacklisted_peers,
1541 GNUNET_CONTAINER_multihashmap_remove_all (pg->peers[first].blacklisted_peers,
1546 GNUNET_CONTAINER_multihashmap_contains (pg->peers[second].blacklisted_peers,
1549 GNUNET_CONTAINER_multihashmap_remove_all (pg->peers[second].blacklisted_peers,
1558 * Add entries to the some list
1560 * @param pg the peer group we are working with
1561 * @param first index of the first peer
1562 * @param second index of the second peer
1563 * @param list the list type that we should modify
1564 * @param check GNUNET_YES to check lists before adding
1565 * GNUNET_NO to force add
1567 * @return the number of connections added (can be 0, 1 or 2)
1571 add_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first,
1572 unsigned int second, enum PeerLists list, unsigned int check)
1578 struct PeerConnection **first_list;
1579 struct PeerConnection **second_list;
1580 struct PeerConnection *first_iter;
1581 struct PeerConnection *second_iter;
1582 struct PeerConnection *new_first;
1583 struct PeerConnection *new_second;
1584 struct PeerConnection **first_tail;
1585 struct PeerConnection **second_tail;
1590 first_list = &pg->peers[first].allowed_peers_head;
1591 second_list = &pg->peers[second].allowed_peers_head;
1592 first_tail = &pg->peers[first].allowed_peers_tail;
1593 second_tail = &pg->peers[second].allowed_peers_tail;
1596 first_list = &pg->peers[first].connect_peers_head;
1597 second_list = &pg->peers[second].connect_peers_head;
1598 first_tail = &pg->peers[first].connect_peers_tail;
1599 second_tail = &pg->peers[second].connect_peers_tail;
1602 first_list = &pg->peers[first].blacklisted_peers_head;
1603 second_list = &pg->peers[second].blacklisted_peers_head;
1604 first_tail = &pg->peers[first].blacklisted_peers_tail;
1605 second_tail = &pg->peers[second].blacklisted_peers_tail;
1608 first_list = &pg->peers[first].connect_peers_working_set_head;
1609 second_list = &pg->peers[second].connect_peers_working_set_head;
1610 first_tail = &pg->peers[first].connect_peers_working_set_tail;
1611 second_tail = &pg->peers[second].connect_peers_working_set_tail;
1618 add_first = GNUNET_YES;
1619 add_second = GNUNET_YES;
1621 if (check == GNUNET_YES)
1623 first_iter = *first_list;
1624 while (first_iter != NULL)
1626 if (first_iter->index == second)
1628 add_first = GNUNET_NO;
1631 first_iter = first_iter->next;
1634 second_iter = *second_list;
1635 while (second_iter != NULL)
1637 if (second_iter->index == first)
1639 add_second = GNUNET_NO;
1642 second_iter = second_iter->next;
1649 new_first = GNUNET_malloc (sizeof (struct PeerConnection));
1650 new_first->index = second;
1651 GNUNET_CONTAINER_DLL_insert(*first_list, *first_tail, new_first);
1652 pg->peers[first].num_connections++;
1658 new_second = GNUNET_malloc (sizeof (struct PeerConnection));
1659 new_second->index = first;
1660 GNUNET_CONTAINER_DLL_insert(*second_list, *second_tail, new_second);
1661 pg->peers[second].num_connections++;
1669 * Scale free network construction as described in:
1671 * "Emergence of Scaling in Random Networks." Science 286, 509-512, 1999.
1673 * Start with a network of "one" peer, then progressively add
1674 * peers up to the total number. At each step, iterate over
1675 * all possible peers and connect new peer based on number of
1676 * existing connections of the target peer.
1678 * @param pg the peer group we are dealing with
1679 * @param proc the connection processor to use
1680 * @param list the peer list to use
1682 * @return the number of connections created
1685 create_scale_free(struct GNUNET_TESTING_PeerGroup *pg,
1686 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
1689 unsigned int total_connections;
1690 unsigned int outer_count;
1692 unsigned int previous_total_connections;
1696 GNUNET_assert (pg->total > 1);
1698 /* Add a connection between the first two nodes */
1699 total_connections = proc (pg, 0, 1, list, GNUNET_YES);
1701 for (outer_count = 1; outer_count < pg->total; outer_count++)
1703 previous_total_connections = total_connections;
1704 for (i = 0; i < outer_count; i++)
1706 probability = pg->peers[i].num_connections
1707 / (double) previous_total_connections;
1709 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
1711 / ((double) UINT64_MAX);
1713 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1714 "Considering connecting peer %d to peer %d\n",
1717 if (random < probability)
1720 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1721 "Connecting peer %d to peer %d\n", outer_count, i);
1723 total_connections += proc (pg, outer_count, i, list, GNUNET_YES);
1728 return total_connections;
1732 * Create a topology given a peer group (set of running peers)
1733 * and a connection processor. Creates a small world topology
1734 * according to the rewired ring construction. The basic
1735 * behavior is that a ring topology is created, but with some
1736 * probability instead of connecting a peer to the next
1737 * neighbor in the ring a connection will be created to a peer
1738 * selected uniformly at random. We use the TESTING
1739 * PERCENTAGE option to specify what number of
1740 * connections each peer should have. Default is 2,
1741 * which makes the ring, any given number is multiplied by
1742 * the log of the network size; i.e. a PERCENTAGE of 2 makes
1743 * each peer have on average 2logn connections. The additional
1744 * connections are made at increasing distance around the ring
1745 * from the original peer, or to random peers based on the re-
1746 * wiring probability. The TESTING
1747 * PROBABILITY option is used as the probability that a given
1748 * connection is rewired.
1750 * @param pg the peergroup to create the topology on
1751 * @param proc the connection processor to call to actually set
1752 * up connections between two peers
1753 * @param list the peer list to use
1755 * @return the number of connections that were set up
1759 create_small_world_ring(struct GNUNET_TESTING_PeerGroup *pg,
1760 GNUNET_TESTING_ConnectionProcessor proc,
1761 enum PeerLists list)
1765 unsigned int natLog;
1766 unsigned int randomPeer;
1767 double random, logNModifier, probability;
1768 unsigned int smallWorldConnections;
1773 unsigned int useAnd;
1774 int connect_attempts;
1776 logNModifier = 0.5; /* FIXME: default value? */
1777 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1781 if (sscanf (p_string, "%lf", &logNModifier) != 1)
1783 GNUNET_ERROR_TYPE_WARNING,
1785 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1786 p_string, "LOGNMODIFIER", "TESTING");
1787 GNUNET_free (p_string);
1789 probability = 0.5; /* FIXME: default percentage? */
1790 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1794 if (sscanf (p_string, "%lf", &probability) != 1)
1796 GNUNET_ERROR_TYPE_WARNING,
1798 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1799 p_string, "PERCENTAGE", "TESTING");
1800 GNUNET_free (p_string);
1802 natLog = log (pg->total);
1803 connsPerPeer = ceil (natLog * logNModifier);
1805 if (connsPerPeer % 2 == 1)
1808 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Target is %d connections per peer."),
1811 smallWorldConnections = 0;
1812 connect_attempts = 0;
1813 for (i = 0; i < pg->total; i++)
1816 max = i + connsPerPeer / 2;
1817 min = i - connsPerPeer / 2;
1819 if (max > pg->total - 1)
1821 max = max - pg->total;
1827 min = pg->total - 1 + min;
1831 for (j = 0; j < connsPerPeer / 2; j++)
1834 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
1836 / ((double) UINT64_MAX));
1837 if (random < probability)
1839 /* Connect to uniformly selected random peer */
1841 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1843 while ((((randomPeer < max) && (randomPeer > min)) && (useAnd
1844 == 0)) || (((randomPeer > min) || (randomPeer < max))
1848 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1851 smallWorldConnections += proc (pg, i, randomPeer, list,
1856 nodeToConnect = i + j + 1;
1857 if (nodeToConnect > pg->total - 1)
1859 nodeToConnect = nodeToConnect - pg->total;
1861 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
1867 connect_attempts += smallWorldConnections;
1869 return connect_attempts;
1873 * Create a topology given a peer group (set of running peers)
1874 * and a connection processor.
1876 * @param pg the peergroup to create the topology on
1877 * @param proc the connection processor to call to actually set
1878 * up connections between two peers
1879 * @param list the peer list to use
1881 * @return the number of connections that were set up
1885 create_nated_internet(struct GNUNET_TESTING_PeerGroup *pg,
1886 GNUNET_TESTING_ConnectionProcessor proc,
1887 enum PeerLists list)
1889 unsigned int outer_count, inner_count;
1890 unsigned int cutoff;
1891 int connect_attempts;
1892 double nat_percentage;
1895 nat_percentage = 0.6; /* FIXME: default percentage? */
1896 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1900 if (sscanf (p_string, "%lf", &nat_percentage) != 1)
1902 GNUNET_ERROR_TYPE_WARNING,
1904 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1905 p_string, "PERCENTAGE", "TESTING");
1906 GNUNET_free (p_string);
1909 cutoff = (unsigned int) (nat_percentage * pg->total);
1910 connect_attempts = 0;
1911 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1913 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
1915 if ((outer_count > cutoff) || (inner_count > cutoff))
1918 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1919 "Connecting peer %d to peer %d\n",
1920 outer_count, inner_count);
1922 connect_attempts += proc (pg, outer_count, inner_count, list,
1927 return connect_attempts;
1932 * Create a topology given a peer group (set of running peers)
1933 * and a connection processor.
1935 * @param pg the peergroup to create the topology on
1936 * @param proc the connection processor to call to actually set
1937 * up connections between two peers
1938 * @param list the peer list to use
1940 * @return the number of connections that were set up
1944 create_nated_internet_copy(struct GNUNET_TESTING_PeerGroup *pg,
1945 GNUNET_TESTING_ConnectionProcessor proc,
1946 enum PeerLists list)
1948 unsigned int outer_count, inner_count;
1949 unsigned int cutoff;
1950 int connect_attempts;
1951 double nat_percentage;
1954 struct ProgressMeter *conn_meter;
1956 nat_percentage = 0.6; /* FIXME: default percentage? */
1957 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1961 if (sscanf (p_string, "%lf", &nat_percentage) != 1)
1963 GNUNET_ERROR_TYPE_WARNING,
1965 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1966 p_string, "PERCENTAGE", "TESTING");
1967 GNUNET_free (p_string);
1970 cutoff = (unsigned int) (nat_percentage * pg->total);
1972 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1974 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
1976 if ((outer_count > cutoff) || (inner_count > cutoff))
1982 conn_meter = create_meter (count, "NAT COPY", GNUNET_YES);
1983 connect_attempts = 0;
1984 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1986 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
1988 if ((outer_count > cutoff) || (inner_count > cutoff))
1991 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1992 "Connecting peer %d to peer %d\n",
1993 outer_count, inner_count);
1995 connect_attempts += proc (pg, outer_count, inner_count, list,
1997 add_connections (pg, outer_count, inner_count, ALLOWED, GNUNET_NO);
1998 update_meter (conn_meter);
2002 free_meter (conn_meter);
2004 return connect_attempts;
2009 * Create a topology given a peer group (set of running peers)
2010 * and a connection processor.
2012 * @param pg the peergroup to create the topology on
2013 * @param proc the connection processor to call to actually set
2014 * up connections between two peers
2015 * @param list the peer list to use
2017 * @return the number of connections that were set up
2021 create_small_world(struct GNUNET_TESTING_PeerGroup *pg,
2022 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2024 unsigned int i, j, k;
2025 unsigned int square;
2028 unsigned int toggle = 1;
2029 unsigned int nodeToConnect;
2030 unsigned int natLog;
2031 unsigned int node1Row;
2032 unsigned int node1Col;
2033 unsigned int node2Row;
2034 unsigned int node2Col;
2035 unsigned int distance;
2036 double probability, random, percentage;
2037 unsigned int smallWorldConnections;
2038 unsigned int small_world_it;
2040 int connect_attempts;
2041 square = floor (sqrt (pg->total));
2045 percentage = 0.5; /* FIXME: default percentage? */
2046 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2050 if (sscanf (p_string, "%lf", &percentage) != 1)
2052 GNUNET_ERROR_TYPE_WARNING,
2054 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2055 p_string, "PERCENTAGE", "TESTING");
2056 GNUNET_free (p_string);
2058 if (percentage < 0.0)
2061 GNUNET_ERROR_TYPE_WARNING,
2063 ("Invalid value `%s' for option `%s' in section `%s': got %f, needed value greater than 0\n"),
2064 "PERCENTAGE", "TESTING", percentage);
2067 probability = 0.5; /* FIXME: default percentage? */
2068 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2072 if (sscanf (p_string, "%lf", &probability) != 1)
2074 GNUNET_ERROR_TYPE_WARNING,
2076 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2077 p_string, "PROBABILITY", "TESTING");
2078 GNUNET_free (p_string);
2080 if (square * square != pg->total)
2082 while (rows * cols < pg->total)
2084 if (toggle % 2 == 0)
2093 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2095 ("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
2099 connect_attempts = 0;
2100 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
2101 * to the node to its right and above. Once this is over, we'll have our torus!
2102 * Special case for the last node (if the rows and columns are not equal), connect
2103 * to the first in the row to maintain topology.
2105 for (i = 0; i < pg->total; i++)
2107 /* First connect to the node to the right */
2108 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
2109 nodeToConnect = i + 1;
2110 else if (i + 1 == pg->total)
2111 nodeToConnect = rows * cols - cols;
2113 nodeToConnect = i - cols + 1;
2115 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2119 nodeToConnect = (rows * cols) - cols + i;
2120 if (nodeToConnect >= pg->total)
2121 nodeToConnect -= cols;
2124 nodeToConnect = i - cols;
2126 if (nodeToConnect < pg->total)
2127 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2129 natLog = log (pg->total);
2130 #if VERBOSE_TESTING > 2
2131 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2132 _("natural log of %d is %d, will run %d iterations\n"),
2133 pg->total, natLog, (int) (natLog * percentage));
2134 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2135 _("Total connections added thus far: %u!\n"), connect_attempts);
2137 smallWorldConnections = 0;
2138 small_world_it = (unsigned int) (natLog * percentage);
2139 if (small_world_it < 1)
2141 GNUNET_assert (small_world_it > 0 && small_world_it < (unsigned int) -1);
2142 for (i = 0; i < small_world_it; i++)
2144 for (j = 0; j < pg->total; j++)
2146 /* Determine the row and column of node at position j on the 2d torus */
2147 node1Row = j / cols;
2148 node1Col = j - (node1Row * cols);
2149 for (k = 0; k < pg->total; k++)
2151 /* Determine the row and column of node at position k on the 2d torus */
2152 node2Row = k / cols;
2153 node2Col = k - (node2Row * cols);
2154 /* Simple Cartesian distance */
2155 distance = abs (node1Row - node2Row) + abs (node1Col - node2Col);
2158 /* Calculate probability as 1 over the square of the distance */
2159 probability = 1.0 / (distance * distance);
2160 /* Choose a random value between 0 and 1 */
2162 = ((double) GNUNET_CRYPTO_random_u64 (
2163 GNUNET_CRYPTO_QUALITY_WEAK,
2165 / ((double) UINT64_MAX);
2166 /* If random < probability, then connect the two nodes */
2167 if (random < probability)
2168 smallWorldConnections += proc (pg, j, k, list, GNUNET_YES);
2174 connect_attempts += smallWorldConnections;
2175 #if VERBOSE_TESTING > 2
2176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2177 _("Total connections added for small world: %d!\n"),
2178 smallWorldConnections);
2180 return connect_attempts;
2184 * Create a topology given a peer group (set of running peers)
2185 * and a connection processor.
2187 * @param pg the peergroup to create the topology on
2188 * @param proc the connection processor to call to actually set
2189 * up connections between two peers
2190 * @param list the peer list to use
2192 * @return the number of connections that were set up
2196 create_erdos_renyi(struct GNUNET_TESTING_PeerGroup *pg,
2197 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2200 unsigned int outer_count;
2201 unsigned int inner_count;
2202 int connect_attempts;
2206 probability = 0.5; /* FIXME: default percentage? */
2207 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2211 if (sscanf (p_string, "%lf", &probability) != 1)
2213 GNUNET_ERROR_TYPE_WARNING,
2215 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2216 p_string, "PROBABILITY", "TESTING");
2217 GNUNET_free (p_string);
2219 connect_attempts = 0;
2220 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
2222 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
2225 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
2227 / ((double) UINT64_MAX);
2229 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2230 _("rand is %f probability is %f\n"), temp_rand,
2233 if (temp_rand < probability)
2235 connect_attempts += proc (pg, outer_count, inner_count, list,
2241 return connect_attempts;
2245 * Create a topology given a peer group (set of running peers)
2246 * and a connection processor. This particular function creates
2247 * the connections for a 2d-torus, plus additional "closest"
2248 * connections per peer.
2250 * @param pg the peergroup to create the topology on
2251 * @param proc the connection processor to call to actually set
2252 * up connections between two peers
2253 * @param list the peer list to use
2255 * @return the number of connections that were set up
2259 create_2d_torus(struct GNUNET_TESTING_PeerGroup *pg,
2260 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2263 unsigned int square;
2266 unsigned int toggle = 1;
2267 unsigned int nodeToConnect;
2268 int connect_attempts;
2270 connect_attempts = 0;
2272 square = floor (sqrt (pg->total));
2276 if (square * square != pg->total)
2278 while (rows * cols < pg->total)
2280 if (toggle % 2 == 0)
2289 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2291 ("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
2294 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
2295 * to the node to its right and above. Once this is over, we'll have our torus!
2296 * Special case for the last node (if the rows and columns are not equal), connect
2297 * to the first in the row to maintain topology.
2299 for (i = 0; i < pg->total; i++)
2301 /* First connect to the node to the right */
2302 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
2303 nodeToConnect = i + 1;
2304 else if (i + 1 == pg->total)
2305 nodeToConnect = rows * cols - cols;
2307 nodeToConnect = i - cols + 1;
2309 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2310 "Connecting peer %d to peer %d\n", i, nodeToConnect);
2312 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2314 /* Second connect to the node immediately above */
2317 nodeToConnect = (rows * cols) - cols + i;
2318 if (nodeToConnect >= pg->total)
2319 nodeToConnect -= cols;
2322 nodeToConnect = i - cols;
2324 if (nodeToConnect < pg->total)
2327 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2328 "Connecting peer %d to peer %d\n", i, nodeToConnect);
2330 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2335 return connect_attempts;
2339 * Create a topology given a peer group (set of running peers)
2340 * and a connection processor.
2342 * @param pg the peergroup to create the topology on
2343 * @param proc the connection processor to call to actually set
2344 * up connections between two peers
2345 * @param list the peer list to use
2346 * @param check does the connection processor need to check before
2347 * performing an action on the list?
2349 * @return the number of connections that were set up
2353 create_clique(struct GNUNET_TESTING_PeerGroup *pg,
2354 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list,
2357 unsigned int outer_count;
2358 unsigned int inner_count;
2359 int connect_attempts;
2360 struct ProgressMeter *conn_meter;
2361 connect_attempts = 0;
2363 conn_meter = create_meter ((((pg->total * pg->total) + pg->total) / 2)
2364 - pg->total, "Create Clique ", GNUNET_YES);
2365 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
2367 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
2370 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2371 "Connecting peer %d to peer %d\n",
2372 outer_count, inner_count);
2374 connect_attempts += proc (pg, outer_count, inner_count, list, check);
2375 update_meter (conn_meter);
2378 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Meter has %d left\n",
2379 conn_meter->total - conn_meter->completed);
2380 reset_meter (conn_meter);
2381 free_meter (conn_meter);
2382 return connect_attempts;
2387 * Iterator over hash map entries.
2389 * @param cls closure the peer group
2390 * @param key the key stored in the hashmap is the
2391 * index of the peer to connect to
2392 * @param value value in the hash map, handle to the peer daemon
2393 * @return GNUNET_YES if we should continue to
2398 unblacklist_iterator (void *cls,
2399 const GNUNET_HashCode * key,
2402 struct UnblacklistContext *un_ctx = cls;
2403 uint32_t second_pos;
2405 uid_from_hash (key, &second_pos);
2407 unblacklist_connections(un_ctx->pg, un_ctx->first_uid, second_pos);
2414 * Create a blacklist topology based on the allowed topology
2415 * which disallows any connections not in the allowed topology
2416 * at the transport level.
2418 * @param pg the peergroup to create the topology on
2419 * @param proc the connection processor to call to allow
2420 * up connections between two peers
2422 * @return the number of connections that were set up
2426 copy_allowed(struct GNUNET_TESTING_PeerGroup *pg,
2427 GNUNET_TESTING_ConnectionProcessor proc)
2429 struct UnblacklistContext un_ctx;
2432 struct PeerConnection *iter;
2436 for (count = 0; count < pg->total - 1; count++)
2438 un_ctx.first_uid = count;
2440 iter = pg->peers[count].allowed_peers_head;
2441 while (iter != NULL)
2443 remove_connections (pg, count, iter->index, BLACKLIST, GNUNET_YES);
2444 //unblacklist_connections(pg, count, iter->index);
2448 total += GNUNET_CONTAINER_multihashmap_iterate(pg->peers[count].allowed_peers, &unblacklist_iterator, &un_ctx);
2451 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Unblacklisted %u peers\n", total);
2456 * Create a topology given a peer group (set of running peers)
2457 * and a connection processor.
2459 * @param pg the peergroup to create the topology on
2460 * @param proc the connection processor to call to actually set
2461 * up connections between two peers
2462 * @param list which list should be modified
2464 * @return the number of connections that were set up
2468 create_line(struct GNUNET_TESTING_PeerGroup *pg,
2469 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2472 int connect_attempts;
2474 connect_attempts = 0;
2476 /* Connect each peer to the next highest numbered peer */
2477 for (count = 0; count < pg->total - 1; count++)
2480 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2481 "Connecting peer %d to peer %d\n", count, count + 1);
2483 connect_attempts += proc (pg, count, count + 1, list, GNUNET_YES);
2486 return connect_attempts;
2490 * Create a topology given a peer group (set of running peers)
2491 * and a connection processor.
2493 * @param pg the peergroup to create the topology on
2494 * @param filename the file to read topology information from
2495 * @param proc the connection processor to call to actually set
2496 * up connections between two peers
2497 * @param list the peer list to use
2499 * @return the number of connections that were set up
2503 create_from_file(struct GNUNET_TESTING_PeerGroup *pg, char *filename,
2504 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2506 int connect_attempts;
2507 unsigned int first_peer_index;
2508 unsigned int second_peer_index;
2509 connect_attempts = 0;
2514 unsigned int total_peers;
2516 enum States curr_state;
2518 if (GNUNET_OK != GNUNET_DISK_file_test (filename))
2519 GNUNET_DISK_fn_write (filename, NULL, 0, GNUNET_DISK_PERM_USER_READ);
2521 if ((0 != STAT (filename, &frstat)) || (frstat.st_size == 0))
2523 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2524 "Could not open file `%s' specified for topology!", filename);
2525 return connect_attempts;
2528 data = GNUNET_malloc_large (frstat.st_size);
2529 GNUNET_assert(data != NULL);
2530 if (frstat.st_size != GNUNET_DISK_fn_read (filename, data, frstat.st_size))
2533 GNUNET_ERROR_TYPE_ERROR,
2534 "Could not read file %s specified for host list, ending test!",
2537 return connect_attempts;
2542 first_peer_index = 0;
2543 /* First line should contain a single integer, specifying the number of peers */
2544 /* Each subsequent line should contain this format PEER_INDEX:OTHER_PEER_INDEX[,...] */
2545 curr_state = NUM_PEERS;
2546 while (count < frstat.st_size - 1)
2548 if ((buf[count] == '\n') || (buf[count] == ' '))
2558 total_peers = strtoul(&buf[count], NULL, 10);
2561 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2562 "Failed to read number of peers from topology file!\n");
2563 GNUNET_free_non_null(data);
2564 return connect_attempts;
2566 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2567 "Read %u total peers in topology\n", total_peers);
2568 GNUNET_assert(total_peers == pg->total);
2569 curr_state = PEER_INDEX;
2570 while ((buf[count] != '\n') && (count < frstat.st_size - 1))
2576 first_peer_index = strtoul(&buf[count], NULL, 10);
2579 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2580 "Failed to read peer index from topology file!\n");
2581 GNUNET_free_non_null(data);
2582 return connect_attempts;
2584 while ((buf[count] != ':') && (count < frstat.st_size - 1))
2587 curr_state = OTHER_PEER_INDEX;
2590 if (1 == sscanf (&buf[count], ":"))
2591 curr_state = OTHER_PEER_INDEX;
2594 case OTHER_PEER_INDEX:
2596 second_peer_index = strtoul(&buf[count], NULL, 10);
2599 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2600 "Failed to peer index from topology file!\n");
2601 GNUNET_free_non_null(data);
2602 return connect_attempts;
2604 /* Assume file is written with first peer 1, but array index is 0 */
2605 connect_attempts += proc (pg, first_peer_index - 1, second_peer_index
2606 - 1, list, GNUNET_YES);
2607 while ((buf[count] != '\n') && (buf[count] != ',') && (count
2608 < frstat.st_size - 1))
2610 if (buf[count] == '\n')
2612 curr_state = PEER_INDEX;
2614 else if (buf[count] != ',')
2616 curr_state = OTHER_PEER_INDEX;
2621 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2622 "Found bad data in topology file while in state %d!\n",
2625 return connect_attempts;
2629 return connect_attempts;
2633 * Create a topology given a peer group (set of running peers)
2634 * and a connection processor.
2636 * @param pg the peergroup to create the topology on
2637 * @param proc the connection processor to call to actually set
2638 * up connections between two peers
2639 * @param list the peer list to use
2641 * @return the number of connections that were set up
2645 create_ring(struct GNUNET_TESTING_PeerGroup *pg,
2646 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2649 int connect_attempts;
2651 connect_attempts = 0;
2653 /* Connect each peer to the next highest numbered peer */
2654 for (count = 0; count < pg->total - 1; count++)
2657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2658 "Connecting peer %d to peer %d\n", count, count + 1);
2660 connect_attempts += proc (pg, count, count + 1, list, GNUNET_YES);
2663 /* Connect the last peer to the first peer */
2664 connect_attempts += proc (pg, pg->total - 1, 0, list, GNUNET_YES);
2666 return connect_attempts;
2671 * Iterator for writing friends of a peer to a file.
2673 * @param cls closure, an open writable file handle
2674 * @param key the key the daemon was stored under
2675 * @param value the GNUNET_TESTING_Daemon that needs to be written.
2677 * @return GNUNET_YES to continue iteration
2679 * TODO: Could replace friend_file_iterator and blacklist_file_iterator
2680 * with a single file_iterator that takes a closure which contains
2681 * the prefix to write before the peer. Then this could be used
2682 * for blacklisting multiple transports and writing the friend
2683 * file. I'm sure *someone* will complain loudly about other
2684 * things that negate these functions even existing so no point in
2688 friend_file_iterator (void *cls, const GNUNET_HashCode * key, void *value)
2690 FILE *temp_friend_handle = cls;
2691 struct GNUNET_TESTING_Daemon *peer = value;
2692 struct GNUNET_PeerIdentity *temppeer;
2693 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2695 temppeer = &peer->id;
2696 GNUNET_CRYPTO_hash_to_enc (&temppeer->hashPubKey, &peer_enc);
2697 fprintf (temp_friend_handle, "%s\n", (char *) &peer_enc);
2702 struct BlacklistContext
2705 * The (open) file handle to write to
2707 FILE *temp_file_handle;
2710 * The transport that this peer will be blacklisted on.
2716 * Iterator for writing blacklist data to appropriate files.
2718 * @param cls closure, an open writable file handle
2719 * @param key the key the daemon was stored under
2720 * @param value the GNUNET_TESTING_Daemon that needs to be written.
2722 * @return GNUNET_YES to continue iteration
2725 blacklist_file_iterator (void *cls, const GNUNET_HashCode * key, void *value)
2727 struct BlacklistContext *blacklist_ctx = cls;
2728 struct GNUNET_TESTING_Daemon *peer = value;
2729 struct GNUNET_PeerIdentity *temppeer;
2730 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2732 temppeer = &peer->id;
2733 GNUNET_CRYPTO_hash_to_enc (&temppeer->hashPubKey, &peer_enc);
2734 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Writing entry %s:%s to file\n", blacklist_ctx->transport, (char *) &peer_enc);
2735 fprintf (blacklist_ctx->temp_file_handle, "%s:%s\n",
2736 blacklist_ctx->transport, (char *) &peer_enc);
2743 * Create the friend files based on the PeerConnection's
2744 * of each peer in the peer group, and copy the files
2745 * to the appropriate place
2747 * @param pg the peer group we are dealing with
2750 create_and_copy_friend_files(struct GNUNET_TESTING_PeerGroup *pg)
2752 FILE *temp_friend_handle;
2753 unsigned int pg_iter;
2754 char *temp_service_path;
2755 struct GNUNET_OS_Process **procarr;
2759 enum GNUNET_OS_ProcessStatusType type;
2760 unsigned long return_code;
2768 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2769 struct PeerConnection *conn_iter;
2771 procarr = GNUNET_malloc (sizeof (struct GNUNET_OS_Process *) * pg->total);
2772 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2774 mytemp = GNUNET_DISK_mktemp ("friends");
2775 GNUNET_assert (mytemp != NULL);
2776 temp_friend_handle = fopen (mytemp, "wt");
2777 GNUNET_assert (temp_friend_handle != NULL);
2779 conn_iter = pg->peers[pg_iter].allowed_peers_head;
2780 while (conn_iter != NULL)
2782 GNUNET_CRYPTO_hash_to_enc (
2783 &pg->peers[conn_iter->index].daemon->id.hashPubKey,
2785 fprintf (temp_friend_handle, "%s\n", (char *) &peer_enc);
2786 conn_iter = conn_iter->next;
2789 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].allowed_peers,
2790 &friend_file_iterator,
2791 temp_friend_handle);
2793 fclose (temp_friend_handle);
2796 != GNUNET_CONFIGURATION_get_value_string (
2797 pg->peers[pg_iter]. daemon->cfg,
2798 "PATHS", "SERVICEHOME",
2799 &temp_service_path))
2802 GNUNET_ERROR_TYPE_WARNING,
2804 ("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
2805 "SERVICEHOME", "PATHS");
2806 if (UNLINK (mytemp) != 0)
2807 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink",
2809 GNUNET_free (mytemp);
2813 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
2815 GNUNET_asprintf (&arg, "%s/friends", temp_service_path);
2816 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv", "mv",
2818 GNUNET_assert(procarr[pg_iter] != NULL);
2820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2821 _("Copying file with command cp %s %s\n"), mytemp, arg);
2823 ret = GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: schedule this, throttle! */
2824 GNUNET_OS_process_close (procarr[pg_iter]);
2827 else /* Remote, scp the file to the correct place */
2829 if (NULL != pg->peers[pg_iter].daemon->username)
2830 GNUNET_asprintf (&arg, "%s@%s:%s/friends",
2831 pg->peers[pg_iter].daemon->username,
2832 pg->peers[pg_iter].daemon->hostname,
2835 GNUNET_asprintf (&arg, "%s:%s/friends",
2836 pg->peers[pg_iter].daemon->hostname,
2838 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp", "scp",
2840 GNUNET_assert(procarr[pg_iter] != NULL);
2841 ret = GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: schedule this, throttle! */
2842 GNUNET_OS_process_close (procarr[pg_iter]);
2843 if (ret != GNUNET_OK)
2845 procarr[pg_iter] = NULL;
2847 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2848 _("Copying file with command scp %s %s\n"), mytemp,
2853 GNUNET_free (temp_service_path);
2854 GNUNET_free (mytemp);
2859 ret = GNUNET_SYSERR;
2860 while ((count < max_wait) && (ret != GNUNET_OK))
2863 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2867 _("Checking copy status of file %d\n"), pg_iter);
2869 if (procarr[pg_iter] != NULL) /* Check for already completed! */
2871 if (GNUNET_OS_process_status
2872 (procarr[pg_iter], &type, &return_code) != GNUNET_OK)
2874 ret = GNUNET_SYSERR;
2876 else if ((type != GNUNET_OS_PROCESS_EXITED)
2877 || (return_code != 0))
2879 ret = GNUNET_SYSERR;
2883 GNUNET_OS_process_close (procarr[pg_iter]);
2884 procarr[pg_iter] = NULL;
2886 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2887 _("File %d copied\n"), pg_iter);
2893 if (ret == GNUNET_SYSERR)
2895 /* FIXME: why sleep here? -CG */
2901 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2902 _("Finished copying all friend files!\n"));
2905 GNUNET_free (procarr);
2910 * Create the blacklist files based on the PeerConnection's
2911 * of each peer in the peer group, and copy the files
2912 * to the appropriate place.
2914 * @param pg the peer group we are dealing with
2915 * @param transports space delimited list of transports to blacklist
2918 create_and_copy_blacklist_files(struct GNUNET_TESTING_PeerGroup *pg,
2919 const char *transports)
2921 FILE *temp_file_handle;
2922 unsigned int pg_iter;
2923 char *temp_service_path;
2924 struct GNUNET_OS_Process **procarr;
2927 enum GNUNET_OS_ProcessStatusType type;
2928 unsigned long return_code;
2935 char *temp_transports;
2938 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2939 struct PeerConnection *conn_iter;
2941 static struct BlacklistContext blacklist_ctx;
2944 procarr = GNUNET_malloc (sizeof (struct GNUNET_OS_Process *) * pg->total);
2945 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2947 mytemp = GNUNET_DISK_mktemp ("blacklist");
2948 GNUNET_assert (mytemp != NULL);
2949 temp_file_handle = fopen (mytemp, "wt");
2950 GNUNET_assert (temp_file_handle != NULL);
2951 temp_transports = GNUNET_strdup (transports);
2953 blacklist_ctx.temp_file_handle = temp_file_handle;
2955 transport_len = strlen (temp_transports) + 1;
2958 for (i = 0; i < transport_len; i++)
2960 if ((temp_transports[i] == ' ') && (pos == NULL))
2961 continue; /* At start of string (whitespace) */
2962 else if ((temp_transports[i] == ' ') || (temp_transports[i] == '\0')) /* At end of string */
2964 temp_transports[i] = '\0';
2966 conn_iter = pg->peers[pg_iter].blacklisted_peers_head;
2967 while (conn_iter != NULL)
2969 GNUNET_CRYPTO_hash_to_enc (
2970 &pg->peers[conn_iter->index].daemon->id.hashPubKey,
2972 fprintf (temp_file_handle, "%s:%s\n", pos, (char *) &peer_enc);
2973 conn_iter = conn_iter->next;
2977 blacklist_ctx.transport = pos;
2978 entry_count = GNUNET_CONTAINER_multihashmap_iterate (pg->
2980 [pg_iter].blacklisted_peers,
2981 &blacklist_file_iterator,
2985 } /* At beginning of actual string */
2986 else if (pos == NULL)
2988 pos = &temp_transports[i];
2992 GNUNET_free (temp_transports);
2993 fclose (temp_file_handle);
2996 != GNUNET_CONFIGURATION_get_value_string (
2997 pg->peers[pg_iter]. daemon->cfg,
2998 "PATHS", "SERVICEHOME",
2999 &temp_service_path))
3002 GNUNET_ERROR_TYPE_WARNING,
3004 ("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
3005 "SERVICEHOME", "PATHS");
3006 if (UNLINK (mytemp) != 0)
3007 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink",
3009 GNUNET_free (mytemp);
3013 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
3015 GNUNET_asprintf (&arg, "%s/blacklist", temp_service_path);
3016 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv", "mv",
3019 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3020 _("Copying file with command cp %s %s\n"), mytemp, arg);
3025 else /* Remote, scp the file to the correct place */
3027 if (NULL != pg->peers[pg_iter].daemon->username)
3028 GNUNET_asprintf (&arg, "%s@%s:%s/blacklist",
3029 pg->peers[pg_iter].daemon->username,
3030 pg->peers[pg_iter].daemon->hostname,
3033 GNUNET_asprintf (&arg, "%s:%s/blacklist",
3034 pg->peers[pg_iter].daemon->hostname,
3036 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp", "scp",
3038 GNUNET_assert(procarr[pg_iter] != NULL);
3039 GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: add scheduled blacklist file copy that parallelizes file copying! */
3042 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3043 _("Copying file with command scp %s %s\n"), mytemp,
3048 GNUNET_free (temp_service_path);
3049 GNUNET_free (mytemp);
3053 ret = GNUNET_SYSERR;
3054 while ((count < max_wait) && (ret != GNUNET_OK))
3057 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3061 _("Checking copy status of file %d\n"), pg_iter);
3063 if (procarr[pg_iter] != NULL) /* Check for already completed! */
3065 if (GNUNET_OS_process_status (procarr[pg_iter], &type,
3066 &return_code) != GNUNET_OK)
3068 ret = GNUNET_SYSERR;
3070 else if ((type != GNUNET_OS_PROCESS_EXITED) || (return_code != 0))
3072 ret = GNUNET_SYSERR;
3076 GNUNET_OS_process_close (procarr[pg_iter]);
3077 procarr[pg_iter] = NULL;
3079 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3080 _("File %d copied\n"), pg_iter);
3086 if (ret == GNUNET_SYSERR)
3088 /* FIXME: why sleep here? -CG */
3094 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3095 _("Finished copying all blacklist files!\n"));
3097 GNUNET_free (procarr);
3101 /* Forward Declaration */
3103 schedule_connect(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
3106 * Choose a random peer's next connection to create, and
3107 * call schedule_connect to set up the connect task.
3109 * @param ct_ctx the overall connection context
3112 preschedule_connect(struct GNUNET_TESTING_PeerGroup *pg)
3114 struct ConnectTopologyContext *ct_ctx = &pg->ct_ctx;
3115 struct PeerConnection *connection_iter;
3116 struct ConnectContext *connect_context;
3117 uint32_t random_peer;
3119 if (ct_ctx->remaining_connections == 0)
3122 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, pg->total);
3123 while (pg->peers[random_peer].connect_peers_head == NULL)
3124 random_peer = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
3127 connection_iter = pg->peers[random_peer].connect_peers_head;
3128 connect_context = GNUNET_malloc (sizeof (struct ConnectContext));
3129 connect_context->first_index = random_peer;
3130 connect_context->second_index = connection_iter->index;
3131 connect_context->ct_ctx = ct_ctx;
3132 GNUNET_SCHEDULER_add_now (&schedule_connect, connect_context);
3133 GNUNET_CONTAINER_DLL_remove(pg->peers[random_peer].connect_peers_head, pg->peers[random_peer].connect_peers_tail, connection_iter);
3134 GNUNET_free(connection_iter);
3135 ct_ctx->remaining_connections--;
3139 /* Forward declaration */
3140 static void schedule_send_hellos (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
3143 * Close connections and free the hello context.
3145 * @param cls the 'struct SendHelloContext *'
3146 * @param tc scheduler context
3149 free_hello_context (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3151 struct SendHelloContext *send_hello_context = cls;
3152 if (send_hello_context->peer->daemon->server != NULL)
3154 GNUNET_CORE_disconnect(send_hello_context->peer->daemon->server);
3155 send_hello_context->peer->daemon->server = NULL;
3157 if (send_hello_context->peer->daemon->th != NULL)
3159 GNUNET_TRANSPORT_disconnect(send_hello_context->peer->daemon->th);
3160 send_hello_context->peer->daemon->th = NULL;
3162 if (send_hello_context->core_connect_task != GNUNET_SCHEDULER_NO_TASK)
3164 GNUNET_SCHEDULER_cancel(send_hello_context->core_connect_task);
3165 send_hello_context->core_connect_task = GNUNET_SCHEDULER_NO_TASK;
3167 send_hello_context->pg->outstanding_connects--;
3168 GNUNET_free(send_hello_context);
3172 * For peers that haven't yet connected, notify
3173 * the caller that they have failed (timeout).
3175 * @param cls the 'struct SendHelloContext *'
3176 * @param tc scheduler context
3179 notify_remaining_connections_failed (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3181 struct SendHelloContext *send_hello_context = cls;
3182 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3183 struct PeerConnection *connection;
3185 GNUNET_CORE_disconnect(send_hello_context->peer->daemon->server);
3186 send_hello_context->peer->daemon->server = NULL;
3188 connection = send_hello_context->peer->connect_peers_head;
3190 while (connection != NULL)
3192 if (pg->notify_connection != NULL)
3194 pg->notify_connection(pg->notify_connection_cls,
3195 &send_hello_context->peer->daemon->id,
3196 &pg->peers[connection->index].daemon->id,
3198 send_hello_context->peer->daemon->cfg,
3199 pg->peers[connection->index].daemon->cfg,
3200 send_hello_context->peer->daemon,
3201 pg->peers[connection->index].daemon,
3202 "Peers failed to connect (timeout)");
3204 GNUNET_CONTAINER_DLL_remove(send_hello_context->peer->connect_peers_head, send_hello_context->peer->connect_peers_tail, connection);
3205 GNUNET_free(connection);
3206 connection = connection->next;
3208 GNUNET_SCHEDULER_add_now(&free_hello_context, send_hello_context);
3210 other_peer = &pg->peers[connection->index];
3215 * For peers that haven't yet connected, send
3216 * CORE connect requests.
3218 * @param cls the 'struct SendHelloContext *'
3219 * @param tc scheduler context
3222 send_core_connect_requests (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3224 struct SendHelloContext *send_hello_context = cls;
3225 struct PeerConnection *conn;
3226 GNUNET_assert(send_hello_context->peer->daemon->server != NULL);
3228 send_hello_context->core_connect_task = GNUNET_SCHEDULER_NO_TASK;
3230 send_hello_context->connect_attempts++;
3231 if (send_hello_context->connect_attempts < send_hello_context->pg->ct_ctx.connect_attempts)
3233 conn = send_hello_context->peer->connect_peers_head;
3234 while (conn != NULL)
3236 GNUNET_CORE_peer_request_connect(send_hello_context->peer->daemon->server,
3237 GNUNET_TIME_relative_get_forever(),
3238 &send_hello_context->pg->peers[conn->index].daemon->id,
3243 send_hello_context->core_connect_task = GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_divide(send_hello_context->pg->ct_ctx.connect_timeout, send_hello_context->pg->ct_ctx.connect_attempts) ,
3244 &send_core_connect_requests,
3245 send_hello_context);
3249 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Timeout before all connections created, marking rest as failed!\n");
3250 GNUNET_SCHEDULER_add_now(¬ify_remaining_connections_failed, send_hello_context);
3256 * Success, connection is up. Signal client our success.
3258 * @param cls our "struct SendHelloContext"
3259 * @param peer identity of the peer that has connected
3260 * @param atsi performance information
3262 * FIXME: remove peers from BOTH lists, call notify twice, should
3263 * double the speed of connections as long as the list iteration
3264 * doesn't take too long!
3267 core_connect_notify (void *cls,
3268 const struct GNUNET_PeerIdentity *peer,
3269 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
3271 struct SendHelloContext *send_hello_context = cls;
3272 struct PeerConnection *connection;
3273 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3275 struct PeerData *other_peer;
3278 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3279 "Connected peer %s to peer %s\n",
3280 ctx->d1->shortname, GNUNET_i2s(peer));
3283 if (0 == memcmp(&send_hello_context->peer->daemon->id, peer, sizeof(struct GNUNET_PeerIdentity)))
3286 connection = send_hello_context->peer->connect_peers_head;
3291 while ((connection != NULL) &&
3292 (0 != memcmp(&pg->peers[connection->index].daemon->id, peer, sizeof(struct GNUNET_PeerIdentity))))
3294 connection = connection->next;
3297 if (connection == NULL)
3299 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Connected peer %s to %s, not in list (no problem(?))\n", GNUNET_i2s(peer), send_hello_context->peer->daemon->shortname);
3304 other_peer = &pg->peers[connection->index];
3306 if (pg->notify_connection != NULL)
3308 pg->notify_connection(pg->notify_connection_cls,
3309 &send_hello_context->peer->daemon->id,
3312 send_hello_context->peer->daemon->cfg,
3313 pg->peers[connection->index].daemon->cfg,
3314 send_hello_context->peer->daemon,
3315 pg->peers[connection->index].daemon,
3318 GNUNET_CONTAINER_DLL_remove(send_hello_context->peer->connect_peers_head, send_hello_context->peer->connect_peers_tail, connection);
3319 GNUNET_free(connection);
3323 /* Notify of reverse connection and remove from other peers list of outstanding */
3324 if (other_peer != NULL)
3326 connection = other_peer->connect_peers_head;
3327 while ((connection != NULL) &&
3328 (0 != memcmp(&send_hello_context->peer->daemon->id, &pg->peers[connection->index].daemon->id, sizeof(struct GNUNET_PeerIdentity))))
3330 connection = connection->next;
3332 if (connection != NULL)
3334 if (pg->notify_connection != NULL)
3336 pg->notify_connection(pg->notify_connection_cls,
3338 &send_hello_context->peer->daemon->id,
3340 pg->peers[connection->index].daemon->cfg,
3341 send_hello_context->peer->daemon->cfg,
3342 pg->peers[connection->index].daemon,
3343 send_hello_context->peer->daemon,
3347 GNUNET_CONTAINER_DLL_remove(other_peer->connect_peers_head, other_peer->connect_peers_tail, connection);
3348 GNUNET_free(connection);
3353 if (send_hello_context->peer->connect_peers_head == NULL)
3355 GNUNET_SCHEDULER_add_now(&free_hello_context, send_hello_context);
3360 * Notify of a successful connection to the core service.
3362 * @param cls a struct SendHelloContext *
3363 * @param server handle to the core service
3364 * @param my_identity the peer identity of this peer
3365 * @param publicKey the public key of the peer
3368 core_init (void *cls,
3369 struct GNUNET_CORE_Handle * server,
3370 const struct GNUNET_PeerIdentity *
3373 GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *
3376 struct SendHelloContext *send_hello_context = cls;
3377 send_hello_context->core_ready = GNUNET_YES;
3381 * Function called once a hello has been sent
3382 * to the transport, move on to the next one
3383 * or go away forever.
3385 * @param cls the 'struct SendHelloContext *'
3386 * @param tc scheduler context
3389 hello_sent_callback (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3391 struct SendHelloContext *send_hello_context = cls;
3392 //unsigned int pg_iter;
3393 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
3395 GNUNET_free(send_hello_context);
3399 send_hello_context->pg->remaining_hellos--;
3401 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Sent HELLO, have %d remaining!\n", send_hello_context->pg->remaining_hellos);
3403 if (send_hello_context->peer_pos == NULL) /* All HELLOs (for this peer!) have been transmitted! */
3406 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "All hellos for this peer sent, disconnecting transport!\n");
3408 GNUNET_assert(send_hello_context->peer->daemon->th != NULL);
3409 GNUNET_TRANSPORT_disconnect(send_hello_context->peer->daemon->th);
3410 send_hello_context->peer->daemon->th = NULL;
3412 /*if (send_hello_context->pg->remaining_hellos == 0)
3414 for (pg_iter = 0; pg_iter < send_hello_context->pg->max_outstanding_connections; pg_iter++)
3416 preschedule_connect(&send_hello_context->pg->ct_ctx);
3420 GNUNET_assert (send_hello_context->peer->daemon->server == NULL);
3421 send_hello_context->peer->daemon->server = GNUNET_CORE_connect(send_hello_context->peer->cfg,
3425 &core_connect_notify,
3432 send_hello_context->core_connect_task = GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_divide(send_hello_context->pg->ct_ctx.connect_timeout, send_hello_context->pg->ct_ctx.connect_attempts),
3433 &send_core_connect_requests,
3434 send_hello_context);
3437 GNUNET_SCHEDULER_add_now(&schedule_send_hellos, send_hello_context);
3441 * Connect to a peer, give it all the HELLO's of those peers
3442 * we will later ask it to connect to.
3444 * @param ct_ctx the overall connection context
3446 static void schedule_send_hellos (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3448 struct SendHelloContext *send_hello_context = cls;
3449 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3451 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
3453 GNUNET_free(send_hello_context);
3457 GNUNET_assert(send_hello_context->peer_pos != NULL); /* All of the HELLO sends to be scheduled have been scheduled! */
3459 if (((send_hello_context->peer->daemon->th == NULL) &&
3460 (pg->outstanding_connects > pg->max_outstanding_connections)) ||
3461 (pg->stop_connects == GNUNET_YES))
3463 #if VERBOSE_TESTING > 2
3464 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3466 ("Delaying connect, we have too many outstanding connections!\n"));
3468 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
3469 (GNUNET_TIME_UNIT_MILLISECONDS, 100),
3470 &schedule_send_hellos, send_hello_context);
3474 #if VERBOSE_TESTING > 2
3475 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3476 _("Creating connection, outstanding_connections is %d\n"),
3477 outstanding_connects);
3479 if (send_hello_context->peer->daemon->th == NULL)
3481 pg->outstanding_connects++; /* Actual TRANSPORT, CORE connections! */
3482 send_hello_context->peer->daemon->th
3483 = GNUNET_TRANSPORT_connect (send_hello_context->peer->cfg, NULL,
3484 send_hello_context, NULL, NULL, NULL);
3487 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3488 _("Offering Hello of peer %s to peer %s\n"),
3489 send_hello_context->peer->daemon->shortname, pg->peers[send_hello_context->peer_pos->index].daemon->shortname);
3491 GNUNET_TRANSPORT_offer_hello(send_hello_context->peer->daemon->th,
3492 (const struct GNUNET_MessageHeader *)pg->peers[send_hello_context->peer_pos->index].daemon->hello,
3493 &hello_sent_callback,
3494 send_hello_context);
3495 send_hello_context->peer_pos = send_hello_context->peer_pos->next;
3496 GNUNET_assert(send_hello_context->peer->daemon->th != NULL);
3502 * Internal notification of a connection, kept so that we can ensure some connections
3503 * happen instead of flooding all testing daemons with requests to connect.
3506 internal_connect_notify(void *cls, const struct GNUNET_PeerIdentity *first,
3507 const struct GNUNET_PeerIdentity *second,
3509 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
3510 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
3511 struct GNUNET_TESTING_Daemon *first_daemon,
3512 struct GNUNET_TESTING_Daemon *second_daemon,
3515 struct ConnectContext *connect_ctx = cls;
3516 struct ConnectTopologyContext *ct_ctx = connect_ctx->ct_ctx;
3517 struct GNUNET_TESTING_PeerGroup *pg = ct_ctx->pg;
3518 struct PeerConnection *connection;
3519 pg->outstanding_connects--;
3522 * Check whether the inverse connection has been scheduled yet,
3523 * if not, we can remove it from the other peers list and avoid
3524 * even trying to connect them again!
3526 connection = pg->peers[connect_ctx->second_index].connect_peers_head;
3531 while ((connection != NULL) && (0
3532 != memcmp (first, &pg->peers[connection->index].daemon->id,
3533 sizeof(struct GNUNET_PeerIdentity))))
3535 connection = connection->next;
3538 if (connection != NULL) /* Can safely remove! */
3540 ct_ctx->remaining_connections--;
3541 if (pg->notify_connection != NULL) /* Notify of reverse connection */
3542 pg->notify_connection (pg->notify_connection_cls, second, first,
3543 distance, second_cfg, first_cfg, second_daemon,
3544 first_daemon, emsg);
3546 GNUNET_CONTAINER_DLL_remove(pg->peers[connect_ctx->second_index].connect_peers_head, pg->peers[connect_ctx->second_index].connect_peers_tail, connection);
3547 GNUNET_free(connection);
3550 if (ct_ctx->remaining_connections == 0)
3552 if (ct_ctx->notify_connections_done != NULL)
3553 ct_ctx->notify_connections_done (ct_ctx->notify_cls, NULL);
3556 preschedule_connect (pg);
3558 if (pg->notify_connection != NULL)
3559 pg->notify_connection (pg->notify_connection_cls, first, second, distance,
3560 first_cfg, second_cfg, first_daemon, second_daemon,
3563 GNUNET_free(connect_ctx);
3567 * Either delay a connection (because there are too many outstanding)
3568 * or schedule it for right now.
3570 * @param cls a connection context
3571 * @param tc the task runtime context
3574 schedule_connect(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3576 struct ConnectContext *connect_context = cls;
3577 struct GNUNET_TESTING_PeerGroup *pg = connect_context->ct_ctx->pg;
3579 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
3582 if ((pg->outstanding_connects > pg->max_outstanding_connections)
3583 || (pg->stop_connects == GNUNET_YES))
3586 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3588 ("Delaying connect, we have too many outstanding connections!\n"));
3590 GNUNET_SCHEDULER_add_delayed (
3591 GNUNET_TIME_relative_multiply (
3592 GNUNET_TIME_UNIT_MILLISECONDS,
3594 &schedule_connect, connect_context);
3599 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3600 _("Creating connection, outstanding_connections is %d (max %d)\n"),
3601 pg->outstanding_connects, pg->max_outstanding_connections);
3603 pg->outstanding_connects++;
3604 pg->total_connects_scheduled++;
3605 GNUNET_TESTING_daemons_connect (
3606 pg->peers[connect_context->first_index].daemon,
3607 pg->peers[connect_context->second_index].daemon,
3608 connect_context->ct_ctx->connect_timeout,
3609 connect_context->ct_ctx->connect_attempts,
3615 &internal_connect_notify, connect_context); /* FIXME: free connect context! */
3621 * Iterator for actually scheduling connections to be created
3622 * between two peers.
3624 * @param cls closure, a GNUNET_TESTING_Daemon
3625 * @param key the key the second Daemon was stored under
3626 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
3628 * @return GNUNET_YES to continue iteration
3631 connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
3633 struct ConnectTopologyContext *ct_ctx = cls;
3634 struct PeerData *first = ct_ctx->first;
3635 struct GNUNET_TESTING_Daemon *second = value;
3636 struct ConnectContext *connect_context;
3638 connect_context = GNUNET_malloc (sizeof (struct ConnectContext));
3639 connect_context->first = first->daemon;
3640 connect_context->second = second;
3641 connect_context->ct_ctx = ct_ctx;
3642 GNUNET_SCHEDULER_add_now (&schedule_connect, connect_context);
3650 * Iterator for copying all entries in the allowed hashmap to the
3653 * @param cls closure, a GNUNET_TESTING_Daemon
3654 * @param key the key the second Daemon was stored under
3655 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
3657 * @return GNUNET_YES to continue iteration
3660 copy_topology_iterator (void *cls, const GNUNET_HashCode * key, void *value)
3662 struct PeerData *first = cls;
3664 GNUNET_assert (GNUNET_OK ==
3665 GNUNET_CONTAINER_multihashmap_put (first->connect_peers, key,
3667 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
3674 * Make the peers to connect the same as those that are allowed to be
3677 * @param pg the peer group
3680 copy_allowed_topology(struct GNUNET_TESTING_PeerGroup *pg)
3682 unsigned int pg_iter;
3686 struct PeerConnection *iter;
3690 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3693 iter = pg->peers[pg_iter].allowed_peers_head;
3694 while (iter != NULL)
3696 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3697 "Creating connection between %d and %d\n", pg_iter,
3699 total += add_connections (pg, pg_iter, iter->index, CONNECT,
3701 //total += add_actual_connections(pg, pg_iter, iter->index);
3706 GNUNET_CONTAINER_multihashmap_iterate (pg->
3707 peers[pg_iter].allowed_peers,
3708 ©_topology_iterator,
3709 &pg->peers[pg_iter]);
3711 if (GNUNET_SYSERR == ret)
3712 return GNUNET_SYSERR;
3714 total = total + ret;
3721 * Connect the topology as specified by the PeerConnection's
3722 * of each peer in the peer group
3724 * @param pg the peer group we are dealing with
3725 * @param connect_timeout how long try connecting two peers
3726 * @param connect_attempts how many times (max) to attempt
3727 * @param notify_callback callback to notify when finished
3728 * @param notify_cls closure for notify callback
3730 * @return the number of connections that will be attempted
3733 connect_topology(struct GNUNET_TESTING_PeerGroup *pg,
3734 struct GNUNET_TIME_Relative connect_timeout,
3735 unsigned int connect_attempts,
3736 GNUNET_TESTING_NotifyCompletion notify_callback,
3739 unsigned int pg_iter;
3743 struct PeerConnection *connection_iter;
3746 struct SendHelloContext *send_hello_context;
3750 pg->ct_ctx.notify_connections_done = notify_callback;
3751 pg->ct_ctx.notify_cls = notify_cls;
3754 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3757 connection_iter = pg->peers[pg_iter].connect_peers_head;
3758 while (connection_iter != NULL)
3760 connection_iter = connection_iter->next;
3765 GNUNET_CONTAINER_multihashmap_size (pg->peers[pg_iter].connect_peers);
3772 pg->ct_ctx.connect_timeout = connect_timeout;
3773 pg->ct_ctx.connect_attempts = connect_attempts;
3774 pg->ct_ctx.remaining_connections = total;
3777 /* First give all peers the HELLO's of other peers (connect to first peer's transport service, give HELLO's of other peers, continue...) */
3778 pg->remaining_hellos = total;
3779 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3781 send_hello_context = GNUNET_malloc(sizeof(struct SendHelloContext));
3782 send_hello_context->peer = &pg->peers[pg_iter];
3783 send_hello_context->peer_pos = pg->peers[pg_iter].connect_peers_head;
3784 send_hello_context->pg = pg;
3785 GNUNET_SCHEDULER_add_now(&schedule_send_hellos, send_hello_context);
3788 for (pg_iter = 0; pg_iter < pg->max_outstanding_connections; pg_iter++)
3790 preschedule_connect (pg);
3798 * Takes a peer group and creates a topology based on the
3799 * one specified. Creates a topology means generates friend
3800 * files for the peers so they can only connect to those allowed
3801 * by the topology. This will only have an effect once peers
3802 * are started if the FRIENDS_ONLY option is set in the base
3803 * config. Also takes an optional restrict topology which
3804 * disallows connections based on particular transports
3805 * UNLESS they are specified in the restricted topology.
3807 * @param pg the peer group struct representing the running peers
3808 * @param topology which topology to connect the peers in
3809 * @param restrict_topology disallow restrict_transports transport
3810 * connections to peers NOT in this topology
3811 * use GNUNET_TESTING_TOPOLOGY_NONE for no restrictions
3812 * @param restrict_transports space delimited list of transports to blacklist
3813 * to create restricted topology
3815 * @return the maximum number of connections were all allowed peers
3816 * connected to each other
3819 GNUNET_TESTING_create_topology(struct GNUNET_TESTING_PeerGroup *pg,
3820 enum GNUNET_TESTING_Topology topology,
3821 enum GNUNET_TESTING_Topology restrict_topology,
3822 const char *restrict_transports)
3826 unsigned int num_connections;
3827 int unblacklisted_connections;
3829 struct PeerConnection *conn_iter;
3830 struct PeerConnection *temp_conn;
3835 for (i = 0; i < pg->total; i++)
3837 pg->peers[i].allowed_peers =
3838 GNUNET_CONTAINER_multihashmap_create (100);
3839 pg->peers[i].connect_peers =
3840 GNUNET_CONTAINER_multihashmap_create (100);
3841 pg->peers[i].blacklisted_peers =
3842 GNUNET_CONTAINER_multihashmap_create (100);
3843 pg->peers[i].pg = pg;
3849 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
3851 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating clique topology\n"));
3853 num_connections = create_clique (pg, &add_connections, ALLOWED, GNUNET_NO);
3855 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
3857 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3858 _("Creating small world (ring) topology\n"));
3860 num_connections = create_small_world_ring (pg, &add_connections, ALLOWED);
3862 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
3864 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3865 _("Creating small world (2d-torus) topology\n"));
3867 num_connections = create_small_world (pg, &add_connections, ALLOWED);
3869 case GNUNET_TESTING_TOPOLOGY_RING:
3871 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating ring topology\n"));
3873 num_connections = create_ring (pg, &add_connections, ALLOWED);
3875 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
3877 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating 2d torus topology\n"));
3879 num_connections = create_2d_torus (pg, &add_connections, ALLOWED);
3881 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
3883 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3884 _("Creating Erdos-Renyi topology\n"));
3886 num_connections = create_erdos_renyi (pg, &add_connections, ALLOWED);
3888 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
3890 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating InterNAT topology\n"));
3892 num_connections = create_nated_internet (pg, &add_connections, ALLOWED);
3894 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
3896 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3897 _("Creating Scale Free topology\n"));
3899 num_connections = create_scale_free (pg, &add_connections, ALLOWED);
3901 case GNUNET_TESTING_TOPOLOGY_LINE:
3903 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3904 _("Creating straight line topology\n"));
3906 num_connections = create_line (pg, &add_connections, ALLOWED);
3908 case GNUNET_TESTING_TOPOLOGY_FROM_FILE:
3910 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3911 _("Creating topology from file!\n"));
3913 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "testing",
3916 num_connections = create_from_file (pg, filename, &add_connections,
3921 GNUNET_ERROR_TYPE_WARNING,
3922 "Missing configuration option TESTING:TOPOLOGY_FILE for creating topology from file!\n");
3923 num_connections = 0;
3926 case GNUNET_TESTING_TOPOLOGY_NONE:
3928 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3930 ("Creating no allowed topology (all peers can connect at core level)\n"));
3932 num_connections = pg->total * pg->total; /* Clique is allowed! */
3935 num_connections = 0;
3939 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "TESTING",
3942 ret = create_and_copy_friend_files (pg);
3943 if (ret != GNUNET_OK)
3946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3947 _("Failed during friend file copying!\n"));
3949 return GNUNET_SYSERR;
3954 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3955 _("Friend files created/copied successfully!\n"));
3960 /* Use the create clique method to initially set all connections as blacklisted. */
3961 if ((restrict_topology != GNUNET_TESTING_TOPOLOGY_NONE) && (restrict_topology
3962 != GNUNET_TESTING_TOPOLOGY_FROM_FILE))
3963 create_clique (pg, &add_connections, BLACKLIST, GNUNET_NO);
3965 return num_connections;
3967 unblacklisted_connections = 0;
3968 /* Un-blacklist connections as per the topology specified */
3969 switch (restrict_topology)
3971 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
3973 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3974 _("Blacklisting all but clique topology\n"));
3976 unblacklisted_connections = create_clique (pg, &remove_connections,
3977 BLACKLIST, GNUNET_NO);
3979 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
3981 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3982 _("Blacklisting all but small world (ring) topology\n"));
3984 unblacklisted_connections = create_small_world_ring (pg,
3985 &remove_connections,
3988 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
3990 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3992 ("Blacklisting all but small world (2d-torus) topology\n"));
3994 unblacklisted_connections = create_small_world (pg, &remove_connections,
3997 case GNUNET_TESTING_TOPOLOGY_RING:
3999 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4000 _("Blacklisting all but ring topology\n"));
4002 unblacklisted_connections
4003 = create_ring (pg, &remove_connections, BLACKLIST);
4005 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
4007 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4008 _("Blacklisting all but 2d torus topology\n"));
4010 unblacklisted_connections = create_2d_torus (pg, &remove_connections,
4013 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
4015 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4016 _("Blacklisting all but Erdos-Renyi topology\n"));
4018 unblacklisted_connections = create_erdos_renyi (pg, &remove_connections,
4021 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
4023 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4024 _("Blacklisting all but InterNAT topology\n"));
4028 for (off = 0; off < pg->total; off++)
4030 conn_iter = pg->peers[off].allowed_peers_head;
4031 while (conn_iter != NULL)
4033 temp_conn = conn_iter->next;
4034 GNUNET_free(conn_iter);
4035 conn_iter = temp_conn;
4037 pg->peers[off].allowed_peers_head = NULL;
4038 pg->peers[off].allowed_peers_tail = NULL;
4040 conn_iter = pg->peers[off].connect_peers_head;
4041 while (conn_iter != NULL)
4043 temp_conn = conn_iter->next;
4044 GNUNET_free(conn_iter);
4045 conn_iter = temp_conn;
4047 pg->peers[off].connect_peers_head = NULL;
4048 pg->peers[off].connect_peers_tail = NULL;
4050 unblacklisted_connections
4051 = create_nated_internet_copy (pg, &remove_connections, BLACKLIST);
4053 unblacklisted_connections =
4054 create_nated_internet (pg, &remove_connections, BLACKLIST);
4058 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
4060 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4061 _("Blacklisting all but Scale Free topology\n"));
4063 unblacklisted_connections = create_scale_free (pg, &remove_connections,
4066 case GNUNET_TESTING_TOPOLOGY_LINE:
4068 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4069 _("Blacklisting all but straight line topology\n"));
4071 unblacklisted_connections
4072 = create_line (pg, &remove_connections, BLACKLIST);
4074 case GNUNET_TESTING_TOPOLOGY_NONE: /* Fall through */
4075 case GNUNET_TESTING_TOPOLOGY_FROM_FILE:
4077 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4079 ("Creating no blacklist topology (all peers can connect at transport level)\n"));
4081 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
4082 ("Creating blacklist topology from allowed\n"));
4083 unblacklisted_connections = copy_allowed (pg, &remove_connections);
4088 if ((unblacklisted_connections > 0) && (restrict_transports != NULL))
4090 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Creating blacklist with `%s'\n",
4091 restrict_transports);
4092 ret = create_and_copy_blacklist_files (pg, restrict_transports);
4093 if (ret != GNUNET_OK)
4096 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4097 _("Failed during blacklist file copying!\n"));
4104 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4105 _("Blacklist files created/copied successfully!\n"));
4109 return num_connections;
4114 * Iterator for choosing random peers to connect.
4116 * @param cls closure, a RandomContext
4117 * @param key the key the second Daemon was stored under
4118 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4120 * @return GNUNET_YES to continue iteration
4123 random_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4125 struct RandomContext *random_ctx = cls;
4126 double random_number;
4127 uint32_t second_pos;
4128 GNUNET_HashCode first_hash;
4131 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
4132 UINT64_MAX)) / ((double) UINT64_MAX);
4133 if (random_number < random_ctx->percentage)
4135 GNUNET_assert (GNUNET_OK ==
4136 GNUNET_CONTAINER_multihashmap_put (random_ctx->
4137 first->connect_peers_working_set,
4139 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4142 /* Now we have considered this particular connection, remove it from the second peer so it's not double counted */
4143 uid_from_hash (key, &second_pos);
4144 hash_from_uid (random_ctx->first_uid, &first_hash);
4145 GNUNET_assert (random_ctx->pg->total > second_pos);
4146 GNUNET_assert (GNUNET_YES ==
4147 GNUNET_CONTAINER_multihashmap_remove (random_ctx->
4149 [second_pos].connect_peers,
4158 * Iterator for adding at least X peers to a peers connection set.
4160 * @param cls closure, MinimumContext
4161 * @param key the key the second Daemon was stored under
4162 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4164 * @return GNUNET_YES to continue iteration
4167 minimum_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4169 struct MinimumContext *min_ctx = cls;
4170 uint32_t second_pos;
4171 GNUNET_HashCode first_hash;
4174 if (GNUNET_CONTAINER_multihashmap_size
4175 (min_ctx->first->connect_peers_working_set) < min_ctx->num_to_add)
4177 for (i = 0; i < min_ctx->num_to_add; i++)
4179 if (min_ctx->pg_array[i] == min_ctx->current)
4181 GNUNET_assert (GNUNET_OK ==
4182 GNUNET_CONTAINER_multihashmap_put
4183 (min_ctx->first->connect_peers_working_set, key,
4185 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4186 uid_from_hash (key, &second_pos);
4187 hash_from_uid (min_ctx->first_uid, &first_hash);
4188 GNUNET_assert (min_ctx->pg->total > second_pos);
4189 GNUNET_assert (GNUNET_OK ==
4190 GNUNET_CONTAINER_multihashmap_put (min_ctx->
4192 [second_pos].connect_peers_working_set,
4196 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4197 /* Now we have added this particular connection, remove it from the second peer's map so it's not double counted */
4198 GNUNET_assert (GNUNET_YES ==
4199 GNUNET_CONTAINER_multihashmap_remove
4200 (min_ctx->pg->peers[second_pos].connect_peers,
4201 &first_hash, min_ctx->first->daemon));
4208 return GNUNET_NO; /* We can stop iterating, we have enough peers! */
4213 * Iterator for adding peers to a connection set based on a depth first search.
4215 * @param cls closure, MinimumContext
4216 * @param key the key the second daemon was stored under
4217 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4219 * @return GNUNET_YES to continue iteration
4222 dfs_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4224 struct DFSContext *dfs_ctx = cls;
4225 GNUNET_HashCode first_hash;
4227 if (dfs_ctx->current == dfs_ctx->chosen)
4229 GNUNET_assert (GNUNET_OK ==
4230 GNUNET_CONTAINER_multihashmap_put (dfs_ctx->
4231 first->connect_peers_working_set,
4233 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4234 uid_from_hash (key, &dfs_ctx->second_uid);
4235 hash_from_uid (dfs_ctx->first_uid, &first_hash);
4236 GNUNET_assert (GNUNET_OK ==
4237 GNUNET_CONTAINER_multihashmap_put (dfs_ctx->
4239 [dfs_ctx->second_uid].connect_peers_working_set,
4243 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4244 GNUNET_assert (GNUNET_YES ==
4245 GNUNET_CONTAINER_multihashmap_remove (dfs_ctx->
4247 [dfs_ctx->second_uid].connect_peers,
4251 /* Can't remove second from first yet because we are currently iterating, hence the return value in the DFSContext! */
4252 return GNUNET_NO; /* We have found our peer, don't iterate more */
4261 * From the set of connections possible, choose percentage percent of connections
4262 * to actually connect.
4264 * @param pg the peergroup we are dealing with
4265 * @param percentage what percent of total connections to make
4268 choose_random_connections(struct GNUNET_TESTING_PeerGroup *pg,
4271 struct RandomContext random_ctx;
4274 struct PeerConnection *temp_peers;
4275 struct PeerConnection *conn_iter;
4276 double random_number;
4279 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4281 random_ctx.first_uid = pg_iter;
4282 random_ctx.first = &pg->peers[pg_iter];
4283 random_ctx.percentage = percentage;
4287 conn_iter = pg->peers[pg_iter].connect_peers_head;
4288 while (conn_iter != NULL)
4291 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
4293 / ((double) UINT64_MAX);
4294 if (random_number < percentage)
4296 add_connections (pg, pg_iter, conn_iter->index, WORKING_SET,
4299 conn_iter = conn_iter->next;
4302 pg->peers[pg_iter].connect_peers_working_set =
4303 GNUNET_CONTAINER_multihashmap_create (pg->total);
4304 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].connect_peers,
4305 &random_connect_iterator,
4307 /* Now remove the old connections */
4308 GNUNET_CONTAINER_multihashmap_destroy (pg->
4309 peers[pg_iter].connect_peers);
4310 /* And replace with the random set */
4311 pg->peers[pg_iter].connect_peers =
4312 pg->peers[pg_iter].connect_peers_working_set;
4316 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4318 conn_iter = pg->peers[pg_iter].connect_peers_head;
4319 while (pg->peers[pg_iter].connect_peers_head != NULL)
4320 remove_connections (pg, pg_iter,
4321 pg->peers[pg_iter].connect_peers_head->index,
4322 CONNECT, GNUNET_YES);
4324 pg->peers[pg_iter].connect_peers_head
4325 = pg->peers[pg_iter].connect_peers_working_set_head;
4326 pg->peers[pg_iter].connect_peers_tail
4327 = pg->peers[pg_iter].connect_peers_working_set_tail;
4328 pg->peers[pg_iter].connect_peers_working_set_head = NULL;
4329 pg->peers[pg_iter].connect_peers_working_set_tail = NULL;
4334 * Count the number of connections in a linked list of connections.
4336 * @param conn_list the connection list to get the count of
4338 * @return the number of elements in the list
4341 count_connections(struct PeerConnection *conn_list)
4343 struct PeerConnection *iter;
4347 while (iter != NULL)
4356 count_workingset_connections(struct GNUNET_TESTING_PeerGroup *pg)
4359 unsigned int pg_iter;
4361 struct PeerConnection *conn_iter;
4365 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4368 conn_iter = pg->peers[pg_iter].connect_peers_working_set_head;
4369 while (conn_iter != NULL)
4372 conn_iter = conn_iter->next;
4376 GNUNET_CONTAINER_multihashmap_size (pg->
4378 [pg_iter].connect_peers_working_set);
4386 count_allowed_connections(struct GNUNET_TESTING_PeerGroup *pg)
4389 unsigned int pg_iter;
4391 struct PeerConnection *conn_iter;
4395 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4398 conn_iter = pg->peers[pg_iter].allowed_peers_head;
4399 while (conn_iter != NULL)
4402 conn_iter = conn_iter->next;
4406 GNUNET_CONTAINER_multihashmap_size (pg->
4408 [pg_iter].allowed_peers);
4416 * From the set of connections possible, choose at least num connections per
4419 * @param pg the peergroup we are dealing with
4420 * @param num how many connections at least should each peer have (if possible)?
4423 choose_minimum(struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
4426 struct MinimumContext minimum_ctx;
4428 struct PeerConnection *conn_iter;
4429 unsigned int temp_list_size;
4432 uint32_t random; /* Random list entry to connect peer to */
4437 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4440 = count_connections (pg->peers[pg_iter].connect_peers_head);
4441 if (temp_list_size == 0)
4443 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
4444 "Peer %d has 0 connections!?!?\n", pg_iter);
4447 for (i = 0; i < num; i++)
4449 random = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4451 conn_iter = pg->peers[pg_iter].connect_peers_head;
4452 for (count = 0; count < random; count++)
4453 conn_iter = conn_iter->next;
4454 /* We now have a random connection, connect it! */
4455 GNUNET_assert(conn_iter != NULL);
4456 add_connections (pg, pg_iter, conn_iter->index, WORKING_SET,
4461 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4463 pg->peers[pg_iter].connect_peers_working_set =
4464 GNUNET_CONTAINER_multihashmap_create (num);
4467 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4469 minimum_ctx.first_uid = pg_iter;
4470 minimum_ctx.pg_array =
4471 GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
4472 GNUNET_CONTAINER_multihashmap_size
4473 (pg->peers[pg_iter].connect_peers));
4474 minimum_ctx.first = &pg->peers[pg_iter];
4475 minimum_ctx.pg = pg;
4476 minimum_ctx.num_to_add = num;
4477 minimum_ctx.current = 0;
4478 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].connect_peers,
4479 &minimum_connect_iterator,
4483 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4485 /* Remove the "old" connections */
4486 GNUNET_CONTAINER_multihashmap_destroy (pg->
4487 peers[pg_iter].connect_peers);
4488 /* And replace with the working set */
4489 pg->peers[pg_iter].connect_peers =
4490 pg->peers[pg_iter].connect_peers_working_set;
4493 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4495 while (pg->peers[pg_iter].connect_peers_head != NULL)
4497 conn_iter = pg->peers[pg_iter].connect_peers_head;
4498 GNUNET_CONTAINER_DLL_remove(pg->peers[pg_iter].connect_peers_head,
4499 pg->peers[pg_iter].connect_peers_tail,
4501 GNUNET_free(conn_iter);
4502 /*remove_connections(pg, pg_iter, pg->peers[pg_iter].connect_peers_head->index, CONNECT, GNUNET_YES);*/
4505 pg->peers[pg_iter].connect_peers_head
4506 = pg->peers[pg_iter].connect_peers_working_set_head;
4507 pg->peers[pg_iter].connect_peers_tail
4508 = pg->peers[pg_iter].connect_peers_working_set_tail;
4509 pg->peers[pg_iter].connect_peers_working_set_head = NULL;
4510 pg->peers[pg_iter].connect_peers_working_set_tail = NULL;
4515 struct FindClosestContext
4518 * The currently known closest peer.
4520 struct GNUNET_TESTING_Daemon *closest;
4523 * The info for the peer we are adding connections for.
4525 struct PeerData *curr_peer;
4528 * The distance (bits) between the current
4529 * peer and the currently known closest.
4531 unsigned int closest_dist;
4534 * The offset of the closest known peer in
4537 unsigned int closest_num;
4541 * Iterator over hash map entries of the allowed
4542 * peer connections. Find the closest, not already
4543 * connected peer and return it.
4545 * @param cls closure (struct FindClosestContext)
4546 * @param key current key code (hash of offset in pg)
4547 * @param value value in the hash map - a GNUNET_TESTING_Daemon
4548 * @return GNUNET_YES if we should continue to
4553 find_closest_peers (void *cls, const GNUNET_HashCode * key, void *value)
4555 struct FindClosestContext *closest_ctx = cls;
4556 struct GNUNET_TESTING_Daemon *daemon = value;
4558 if (((closest_ctx->closest == NULL) ||
4559 (GNUNET_CRYPTO_hash_matching_bits
4560 (&daemon->id.hashPubKey,
4561 &closest_ctx->curr_peer->daemon->id.hashPubKey) >
4562 closest_ctx->closest_dist))
4564 GNUNET_CONTAINER_multihashmap_contains (closest_ctx->
4565 curr_peer->connect_peers,
4568 closest_ctx->closest_dist =
4569 GNUNET_CRYPTO_hash_matching_bits (&daemon->id.hashPubKey,
4570 &closest_ctx->curr_peer->daemon->
4572 closest_ctx->closest = daemon;
4573 uid_from_hash (key, &closest_ctx->closest_num);
4579 * From the set of connections possible, choose at num connections per
4580 * peer based on depth which are closest out of those allowed. Guaranteed
4581 * to add num peers to connect to, provided there are that many peers
4582 * in the underlay topology to connect to.
4584 * @param pg the peergroup we are dealing with
4585 * @param num how many connections at least should each peer have (if possible)?
4586 * @param proc processor to actually add the connections
4587 * @param list the peer list to use
4590 add_closest (struct GNUNET_TESTING_PeerGroup *pg, unsigned int num,
4591 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
4596 struct FindClosestContext closest_ctx;
4601 for (i = 0; i < num; i++) /* Each time find a closest peer (from those available) */
4603 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4605 closest_ctx.curr_peer = &pg->peers[pg_iter];
4606 closest_ctx.closest = NULL;
4607 closest_ctx.closest_dist = 0;
4608 closest_ctx.closest_num = 0;
4609 GNUNET_CONTAINER_multihashmap_iterate (pg->
4610 peers[pg_iter].allowed_peers,
4611 &find_closest_peers,
4613 if (closest_ctx.closest != NULL)
4615 GNUNET_assert (closest_ctx.closest_num < pg->total);
4616 proc (pg, pg_iter, closest_ctx.closest_num, list);
4624 * From the set of connections possible, choose at least num connections per
4625 * peer based on depth first traversal of peer connections. If DFS leaves
4626 * peers unconnected, ensure those peers get connections.
4628 * @param pg the peergroup we are dealing with
4629 * @param num how many connections at least should each peer have (if possible)?
4632 perform_dfs(struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
4636 uint32_t starting_peer;
4637 uint32_t least_connections;
4638 uint32_t random_connection;
4640 unsigned int temp_count;
4641 struct PeerConnection *peer_iter;
4643 struct DFSContext dfs_ctx;
4644 GNUNET_HashCode second_hash;
4650 while ((count_workingset_connections (pg) < num * pg->total)
4651 && (count_allowed_connections (pg) > 0))
4653 if (dfs_count % pg->total == 0) /* Restart the DFS at some weakly connected peer */
4655 least_connections = -1; /* Set to very high number */
4656 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4659 = count_connections (
4660 pg->peers[pg_iter].connect_peers_working_set_head);
4661 if (temp_count < least_connections)
4663 starting_peer = pg_iter;
4664 least_connections = temp_count;
4670 = count_connections (pg->peers[starting_peer].connect_peers_head);
4671 if (temp_count == 0)
4672 continue; /* FIXME: infinite loop? */
4674 random_connection = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4677 peer_iter = pg->peers[starting_peer].connect_peers_head;
4678 while (temp_count < random_connection)
4680 peer_iter = peer_iter->next;
4683 GNUNET_assert(peer_iter != NULL);
4684 add_connections (pg, starting_peer, peer_iter->index, WORKING_SET,
4686 remove_connections (pg, starting_peer, peer_iter->index, CONNECT,
4688 starting_peer = peer_iter->index;
4693 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4695 pg->peers[pg_iter].connect_peers_working_set =
4696 GNUNET_CONTAINER_multihashmap_create (num);
4701 while ((count_workingset_connections (pg) < num * pg->total)
4702 && (count_allowed_connections (pg) > 0))
4704 if (dfs_count % pg->total == 0) /* Restart the DFS at some weakly connected peer */
4706 least_connections = -1; /* Set to very high number */
4707 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4709 if (GNUNET_CONTAINER_multihashmap_size
4710 (pg->peers[pg_iter].connect_peers_working_set) <
4713 starting_peer = pg_iter;
4715 GNUNET_CONTAINER_multihashmap_size (pg->
4717 [pg_iter].connect_peers_working_set);
4722 if (GNUNET_CONTAINER_multihashmap_size (pg->peers[starting_peer].connect_peers) == 0) /* Ensure there is at least one peer left to connect! */
4728 /* Choose a random peer from the chosen peers set of connections to add */
4730 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4731 GNUNET_CONTAINER_multihashmap_size
4732 (pg->peers[starting_peer].connect_peers));
4733 dfs_ctx.first_uid = starting_peer;
4734 dfs_ctx.first = &pg->peers[starting_peer];
4736 dfs_ctx.current = 0;
4738 GNUNET_CONTAINER_multihashmap_iterate (pg->
4740 [starting_peer].connect_peers,
4741 &dfs_connect_iterator, &dfs_ctx);
4742 /* Remove the second from the first, since we will be continuing the search and may encounter the first peer again! */
4743 hash_from_uid (dfs_ctx.second_uid, &second_hash);
4744 GNUNET_assert (GNUNET_YES ==
4745 GNUNET_CONTAINER_multihashmap_remove (pg->peers
4746 [starting_peer].connect_peers,
4750 [dfs_ctx.second_uid].daemon));
4751 starting_peer = dfs_ctx.second_uid;
4754 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4756 /* Remove the "old" connections */
4757 GNUNET_CONTAINER_multihashmap_destroy (pg->
4758 peers[pg_iter].connect_peers);
4759 /* And replace with the working set */
4760 pg->peers[pg_iter].connect_peers =
4761 pg->peers[pg_iter].connect_peers_working_set;
4767 * Internal callback for topology information for a particular peer.
4770 internal_topology_callback(void *cls, const struct GNUNET_PeerIdentity *peer,
4771 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
4773 struct CoreContext *core_ctx = cls;
4774 struct TopologyIterateContext *iter_ctx = core_ctx->iter_context;
4776 if (peer == NULL) /* Either finished, or something went wrong */
4778 iter_ctx->completed++;
4779 iter_ctx->connected--;
4780 /* One core context allocated per iteration, must free! */
4781 GNUNET_free (core_ctx);
4785 iter_ctx->topology_cb (iter_ctx->cls, &core_ctx->daemon->id, peer, NULL);
4788 if (iter_ctx->completed == iter_ctx->total)
4790 iter_ctx->topology_cb (iter_ctx->cls, NULL, NULL, NULL);
4791 /* Once all are done, free the iteration context */
4792 GNUNET_free (iter_ctx);
4797 * Check running topology iteration tasks, if below max start a new one, otherwise
4798 * schedule for some time in the future.
4801 schedule_get_topology(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
4803 struct CoreContext *core_context = cls;
4804 struct TopologyIterateContext *topology_context =
4805 (struct TopologyIterateContext *) core_context->iter_context;
4806 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
4809 if (topology_context->connected
4810 > topology_context->pg->max_outstanding_connections)
4812 #if VERBOSE_TESTING > 2
4813 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4815 ("Delaying connect, we have too many outstanding connections!\n"));
4817 GNUNET_SCHEDULER_add_delayed (
4818 GNUNET_TIME_relative_multiply (
4819 GNUNET_TIME_UNIT_MILLISECONDS,
4821 &schedule_get_topology, core_context);
4825 #if VERBOSE_TESTING > 2
4826 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4827 _("Creating connection, outstanding_connections is %d\n"),
4828 outstanding_connects);
4830 topology_context->connected++;
4832 if (GNUNET_OK != GNUNET_CORE_iterate_peers (core_context->daemon->cfg,
4833 &internal_topology_callback,
4836 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Topology iteration failed.\n");
4837 internal_topology_callback (core_context, NULL, NULL);
4843 * Iterate over all (running) peers in the peer group, retrieve
4844 * all connections that each currently has.
4847 GNUNET_TESTING_get_topology(struct GNUNET_TESTING_PeerGroup *pg,
4848 GNUNET_TESTING_NotifyTopology cb, void *cls)
4850 struct TopologyIterateContext *topology_context;
4851 struct CoreContext *core_ctx;
4853 unsigned int total_count;
4855 /* Allocate a single topology iteration context */
4856 topology_context = GNUNET_malloc (sizeof (struct TopologyIterateContext));
4857 topology_context->topology_cb = cb;
4858 topology_context->cls = cls;
4859 topology_context->pg = pg;
4861 for (i = 0; i < pg->total; i++)
4863 if (pg->peers[i].daemon->running == GNUNET_YES)
4865 /* Allocate one core context per core we need to connect to */
4866 core_ctx = GNUNET_malloc (sizeof (struct CoreContext));
4867 core_ctx->daemon = pg->peers[i].daemon;
4868 /* Set back pointer to topology iteration context */
4869 core_ctx->iter_context = topology_context;
4870 GNUNET_SCHEDULER_add_now (&schedule_get_topology, core_ctx);
4874 if (total_count == 0)
4876 cb (cls, NULL, NULL, "Cannot iterate over topology, no running peers!");
4877 GNUNET_free (topology_context);
4880 topology_context->total = total_count;
4885 * Callback function to process statistic values.
4886 * This handler is here only really to insert a peer
4887 * identity (or daemon) so the statistics can be uniquely
4888 * tied to a single running peer.
4890 * @param cls closure
4891 * @param subsystem name of subsystem that created the statistic
4892 * @param name the name of the datum
4893 * @param value the current value
4894 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
4895 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
4898 internal_stats_callback(void *cls, const char *subsystem, const char *name,
4899 uint64_t value, int is_persistent)
4901 struct StatsCoreContext *core_context = cls;
4902 struct StatsIterateContext *stats_context =
4903 (struct StatsIterateContext *) core_context->iter_context;
4905 return stats_context->proc (stats_context->cls, &core_context->daemon->id,
4906 subsystem, name, value, is_persistent);
4910 * Internal continuation call for statistics iteration.
4912 * @param cls closure, the CoreContext for this iteration
4913 * @param success whether or not the statistics iterations
4914 * was canceled or not (we don't care)
4917 internal_stats_cont(void *cls, int success)
4919 struct StatsCoreContext *core_context = cls;
4920 struct StatsIterateContext *stats_context =
4921 (struct StatsIterateContext *) core_context->iter_context;
4923 stats_context->connected--;
4924 stats_context->completed++;
4926 if (stats_context->completed == stats_context->total)
4928 stats_context->cont (stats_context->cls, GNUNET_YES);
4929 GNUNET_free (stats_context);
4932 if (core_context->stats_handle != NULL)
4933 GNUNET_STATISTICS_destroy (core_context->stats_handle, GNUNET_NO);
4935 GNUNET_free (core_context);
4939 * Check running topology iteration tasks, if below max start a new one, otherwise
4940 * schedule for some time in the future.
4943 schedule_get_statistics(void *cls,
4944 const struct GNUNET_SCHEDULER_TaskContext *tc)
4946 struct StatsCoreContext *core_context = cls;
4947 struct StatsIterateContext *stats_context =
4948 (struct StatsIterateContext *) core_context->iter_context;
4950 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
4953 if (stats_context->connected > stats_context->pg->max_outstanding_connections)
4955 #if VERBOSE_TESTING > 2
4956 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4958 ("Delaying connect, we have too many outstanding connections!\n"));
4960 GNUNET_SCHEDULER_add_delayed (
4961 GNUNET_TIME_relative_multiply (
4962 GNUNET_TIME_UNIT_MILLISECONDS,
4964 &schedule_get_statistics, core_context);
4968 #if VERBOSE_TESTING > 2
4969 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4970 _("Creating connection, outstanding_connections is %d\n"),
4971 outstanding_connects);
4974 stats_context->connected++;
4975 core_context->stats_handle
4976 = GNUNET_STATISTICS_create ("testing", core_context->daemon->cfg);
4977 if (core_context->stats_handle == NULL)
4979 internal_stats_cont (core_context, GNUNET_NO);
4983 core_context->stats_get_handle
4984 = GNUNET_STATISTICS_get (core_context->stats_handle, NULL, NULL,
4985 GNUNET_TIME_relative_get_forever (),
4986 &internal_stats_cont,
4987 &internal_stats_callback, core_context);
4988 if (core_context->stats_get_handle == NULL)
4989 internal_stats_cont (core_context, GNUNET_NO);
4994 struct DuplicateStats
4997 * Next item in the list
4999 struct DuplicateStats *next;
5002 * Nasty string, concatenation of relevant information.
5004 char *unique_string;
5008 * Check whether the combination of port/host/unix domain socket
5009 * already exists in the list of peers being checked for statistics.
5011 * @param pg the peergroup in question
5012 * @param specific_peer the peer we're concerned with
5013 * @param stats_list the list to return to the caller
5015 * @return GNUNET_YES if the statistics instance has been seen already,
5016 * GNUNET_NO if not (and we may have added it to the list)
5019 stats_check_existing(struct GNUNET_TESTING_PeerGroup *pg,
5020 struct PeerData *specific_peer,
5021 struct DuplicateStats **stats_list)
5023 struct DuplicateStats *pos;
5024 char *unix_domain_socket;
5025 unsigned long long port;
5028 != GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "testing",
5029 "single_statistics_per_host"))
5030 return GNUNET_NO; /* Each peer has its own statistics instance, do nothing! */
5033 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (specific_peer->cfg,
5036 &unix_domain_socket))
5039 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (specific_peer->cfg,
5040 "statistics", "port",
5043 GNUNET_free(unix_domain_socket);
5047 if (specific_peer->daemon->hostname != NULL)
5048 GNUNET_asprintf (&to_match, "%s%s%llu", specific_peer->daemon->hostname,
5049 unix_domain_socket, port);
5051 GNUNET_asprintf (&to_match, "%s%llu", unix_domain_socket, port);
5055 if (0 == strcmp (to_match, pos->unique_string))
5057 GNUNET_free (unix_domain_socket);
5058 GNUNET_free (to_match);
5063 pos = GNUNET_malloc (sizeof (struct DuplicateStats));
5064 pos->unique_string = to_match;
5065 pos->next = *stats_list;
5067 GNUNET_free (unix_domain_socket);
5072 * Iterate over all (running) peers in the peer group, retrieve
5073 * all statistics from each.
5076 GNUNET_TESTING_get_statistics(struct GNUNET_TESTING_PeerGroup *pg,
5077 GNUNET_STATISTICS_Callback cont,
5078 GNUNET_TESTING_STATISTICS_Iterator proc,
5081 struct StatsIterateContext *stats_context;
5082 struct StatsCoreContext *core_ctx;
5084 unsigned int total_count;
5085 struct DuplicateStats *stats_list;
5086 struct DuplicateStats *pos;
5089 /* Allocate a single stats iteration context */
5090 stats_context = GNUNET_malloc (sizeof (struct StatsIterateContext));
5091 stats_context->cont = cont;
5092 stats_context->proc = proc;
5093 stats_context->cls = cls;
5094 stats_context->pg = pg;
5097 for (i = 0; i < pg->total; i++)
5099 if ((pg->peers[i].daemon->running == GNUNET_YES) && (GNUNET_NO
5100 == stats_check_existing (pg, &pg->peers[i], &stats_list)))
5102 /* Allocate one core context per core we need to connect to */
5103 core_ctx = GNUNET_malloc (sizeof (struct StatsCoreContext));
5104 core_ctx->daemon = pg->peers[i].daemon;
5105 /* Set back pointer to topology iteration context */
5106 core_ctx->iter_context = stats_context;
5107 GNUNET_SCHEDULER_add_now (&schedule_get_statistics, core_ctx);
5112 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5113 "Retrieving stats from %u total instances.\n", total_count);
5114 stats_context->total = total_count;
5115 if (stats_list != NULL)
5120 GNUNET_free (pos->unique_string);
5121 stats_list = pos->next;
5123 pos = stats_list->next;
5130 * Stop the connection process temporarily.
5132 * @param pg the peer group to stop connecting
5135 GNUNET_TESTING_stop_connections(struct GNUNET_TESTING_PeerGroup *pg)
5137 pg->stop_connects = GNUNET_YES;
5141 * Resume the connection process temporarily.
5143 * @param pg the peer group to resume connecting
5146 GNUNET_TESTING_resume_connections(struct GNUNET_TESTING_PeerGroup *pg)
5148 pg->stop_connects = GNUNET_NO;
5152 * There are many ways to connect peers that are supported by this function.
5153 * To connect peers in the same topology that was created via the
5154 * GNUNET_TESTING_create_topology, the topology variable must be set to
5155 * GNUNET_TESTING_TOPOLOGY_NONE. If the topology variable is specified,
5156 * a new instance of that topology will be generated and attempted to be
5157 * connected. This could result in some connections being impossible,
5158 * because some topologies are non-deterministic.
5160 * @param pg the peer group struct representing the running peers
5161 * @param topology which topology to connect the peers in
5162 * @param options options for connecting the topology
5163 * @param option_modifier modifier for options that take a parameter
5164 * @param connect_timeout how long to wait before giving up on connecting
5166 * @param connect_attempts how many times to attempt to connect two peers
5167 * over the connect_timeout duration
5168 * @param notify_callback notification to be called once all connections completed
5169 * @param notify_cls closure for notification callback
5171 * @return the number of connections that will be attempted, GNUNET_SYSERR on error
5174 GNUNET_TESTING_connect_topology(
5175 struct GNUNET_TESTING_PeerGroup *pg,
5176 enum GNUNET_TESTING_Topology topology,
5177 enum GNUNET_TESTING_TopologyOption options,
5178 double option_modifier,
5179 struct GNUNET_TIME_Relative connect_timeout,
5180 unsigned int connect_attempts,
5181 GNUNET_TESTING_NotifyCompletion notify_callback,
5186 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
5187 #if VERBOSE_TOPOLOGY
5188 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5189 _("Creating clique CONNECT topology\n"));
5191 create_clique (pg, &add_connections, CONNECT, GNUNET_NO);
5193 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
5194 #if VERBOSE_TOPOLOGY
5195 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5196 _("Creating small world (ring) CONNECT topology\n"));
5198 create_small_world_ring (pg, &add_connections, CONNECT);
5200 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
5201 #if VERBOSE_TOPOLOGY
5202 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5203 _("Creating small world (2d-torus) CONNECT topology\n"));
5205 create_small_world (pg, &add_connections, CONNECT);
5207 case GNUNET_TESTING_TOPOLOGY_RING:
5208 #if VERBOSE_TOPOLOGY
5209 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating ring CONNECT topology\n"));
5211 create_ring (pg, &add_connections, CONNECT);
5213 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
5214 #if VERBOSE_TOPOLOGY
5215 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5216 _("Creating 2d torus CONNECT topology\n"));
5218 create_2d_torus (pg, &add_connections, CONNECT);
5220 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
5221 #if VERBOSE_TOPOLOGY
5222 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5223 _("Creating Erdos-Renyi CONNECT topology\n"));
5225 create_erdos_renyi (pg, &add_connections, CONNECT);
5227 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
5228 #if VERBOSE_TOPOLOGY
5229 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5230 _("Creating InterNAT CONNECT topology\n"));
5232 create_nated_internet (pg, &add_connections, CONNECT);
5234 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
5235 #if VERBOSE_TOPOLOGY
5236 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5237 _("Creating Scale Free CONNECT topology\n"));
5239 create_scale_free (pg, &add_connections, CONNECT);
5241 case GNUNET_TESTING_TOPOLOGY_LINE:
5242 #if VERBOSE_TOPOLOGY
5243 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5244 _("Creating straight line CONNECT topology\n"));
5246 create_line (pg, &add_connections, CONNECT);
5248 case GNUNET_TESTING_TOPOLOGY_NONE:
5249 #if VERBOSE_TOPOLOGY
5250 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating no CONNECT topology\n"));
5252 copy_allowed_topology (pg);
5255 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5256 ("Unknown topology specification, can't connect peers!\n"));
5257 return GNUNET_SYSERR;
5262 case GNUNET_TESTING_TOPOLOGY_OPTION_RANDOM:
5263 #if VERBOSE_TOPOLOGY
5264 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
5265 ("Connecting random subset (%'.2f percent) of possible peers\n"), 100
5268 choose_random_connections (pg, option_modifier);
5270 case GNUNET_TESTING_TOPOLOGY_OPTION_MINIMUM:
5271 #if VERBOSE_TOPOLOGY
5272 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5273 _("Connecting a minimum of %u peers each (if possible)\n"),
5274 (unsigned int) option_modifier);
5276 choose_minimum (pg, (unsigned int) option_modifier);
5278 case GNUNET_TESTING_TOPOLOGY_OPTION_DFS:
5279 #if VERBOSE_TOPOLOGY
5280 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
5281 ("Using DFS to connect a minimum of %u peers each (if possible)\n"),
5282 (unsigned int) option_modifier);
5285 perform_dfs (pg, (int) option_modifier);
5288 case GNUNET_TESTING_TOPOLOGY_OPTION_ADD_CLOSEST:
5289 #if VERBOSE_TOPOLOGY
5290 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5291 ("Finding additional %u closest peers each (if possible)\n"),
5292 (unsigned int) option_modifier);
5295 add_closest (pg, (unsigned int) option_modifier,
5296 &add_connections, CONNECT);
5299 case GNUNET_TESTING_TOPOLOGY_OPTION_NONE:
5301 case GNUNET_TESTING_TOPOLOGY_OPTION_ALL:
5307 return connect_topology (pg, connect_timeout, connect_attempts,
5308 notify_callback, notify_cls);
5312 * Lookup and return the number of SSH connections to a host.
5314 * @param hostname the hostname to lookup in the list
5315 * @param pg the peergroup that the host belongs to
5317 * @return the number of current ssh connections to the host
5320 count_outstanding_at_host(const char *hostname,
5321 struct GNUNET_TESTING_PeerGroup *pg)
5323 struct OutstandingSSH *pos;
5325 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5327 GNUNET_assert(pos != NULL);
5328 return pos->outstanding;
5332 * Increment the number of SSH connections to a host by one.
5334 * @param hostname the hostname to lookup in the list
5335 * @param pg the peergroup that the host belongs to
5339 increment_outstanding_at_host(const char *hostname,
5340 struct GNUNET_TESTING_PeerGroup *pg)
5342 struct OutstandingSSH *pos;
5344 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5346 GNUNET_assert(pos != NULL);
5351 * Decrement the number of SSH connections to a host by one.
5353 * @param hostname the hostname to lookup in the list
5354 * @param pg the peergroup that the host belongs to
5358 decrement_outstanding_at_host(const char *hostname,
5359 struct GNUNET_TESTING_PeerGroup *pg)
5361 struct OutstandingSSH *pos;
5363 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5365 GNUNET_assert(pos != NULL);
5370 * Callback that is called whenever a hostkey is generated
5371 * for a peer. Call the real callback and decrement the
5372 * starting counter for the peergroup.
5374 * @param cls closure
5375 * @param id identifier for the daemon, NULL on error
5376 * @param d handle for the daemon
5377 * @param emsg error message (NULL on success)
5380 internal_hostkey_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5381 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5383 struct InternalStartContext *internal_context = cls;
5384 internal_context->peer->pg->starting--;
5385 internal_context->peer->pg->started++;
5386 if (internal_context->hostname != NULL)
5387 decrement_outstanding_at_host (internal_context->hostname,
5388 internal_context->peer->pg);
5389 if (internal_context->hostkey_callback != NULL)
5390 internal_context->hostkey_callback (internal_context->hostkey_cls, id, d,
5392 else if (internal_context->peer->pg->started
5393 == internal_context->peer->pg->total)
5395 internal_context->peer->pg->started = 0; /* Internal startup may use this counter! */
5396 GNUNET_TESTING_daemons_continue_startup (internal_context->peer->pg);
5401 * Callback that is called whenever a peer has finished starting.
5402 * Call the real callback and decrement the starting counter
5403 * for the peergroup.
5405 * @param cls closure
5406 * @param id identifier for the daemon, NULL on error
5408 * @param d handle for the daemon
5409 * @param emsg error message (NULL on success)
5412 internal_startup_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5413 const struct GNUNET_CONFIGURATION_Handle *cfg,
5414 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5416 struct InternalStartContext *internal_context = cls;
5417 internal_context->peer->pg->starting--;
5418 if (internal_context->hostname != NULL)
5419 decrement_outstanding_at_host (internal_context->hostname,
5420 internal_context->peer->pg);
5421 if (internal_context->start_cb != NULL)
5422 internal_context->start_cb (internal_context->start_cb_cls, id, cfg, d,
5427 internal_continue_startup(void *cls,
5428 const struct GNUNET_SCHEDULER_TaskContext *tc)
5430 struct InternalStartContext *internal_context = cls;
5432 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
5437 if ((internal_context->peer->pg->starting
5438 < internal_context->peer->pg->max_concurrent_ssh)
5439 || ((internal_context->hostname != NULL)
5440 && (count_outstanding_at_host (internal_context->hostname,
5441 internal_context->peer->pg)
5442 < internal_context->peer->pg->max_concurrent_ssh)))
5444 if (internal_context->hostname != NULL)
5445 increment_outstanding_at_host (internal_context->hostname,
5446 internal_context->peer->pg);
5447 internal_context->peer->pg->starting++;
5448 GNUNET_TESTING_daemon_continue_startup (internal_context->peer->daemon);
5452 GNUNET_SCHEDULER_add_delayed (
5453 GNUNET_TIME_relative_multiply (
5454 GNUNET_TIME_UNIT_MILLISECONDS,
5456 &internal_continue_startup,
5462 * Callback for informing us about a successful
5463 * or unsuccessful churn start call.
5465 * @param cls a ChurnContext
5466 * @param id the peer identity of the started peer
5467 * @param cfg the handle to the configuration of the peer
5468 * @param d handle to the daemon for the peer
5469 * @param emsg NULL on success, non-NULL on failure
5473 churn_start_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5474 const struct GNUNET_CONFIGURATION_Handle *cfg,
5475 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5477 struct ChurnRestartContext *startup_ctx = cls;
5478 struct ChurnContext *churn_ctx = startup_ctx->churn_ctx;
5480 unsigned int total_left;
5481 char *error_message;
5483 error_message = NULL;
5486 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5487 "Churn stop callback failed with error `%s'\n", emsg);
5488 churn_ctx->num_failed_start++;
5492 churn_ctx->num_to_start--;
5496 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5497 "Started peer, %d left.\n", churn_ctx->num_to_start);
5500 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop)
5501 + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
5503 if (total_left == 0)
5505 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
5508 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
5509 churn_ctx->num_failed_start,
5510 churn_ctx->num_failed_stop);
5511 churn_ctx->cb (churn_ctx->cb_cls, error_message);
5512 GNUNET_free_non_null (error_message);
5513 GNUNET_free (churn_ctx);
5514 GNUNET_free (startup_ctx);
5519 schedule_churn_restart(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5521 struct PeerRestartContext *peer_restart_ctx = cls;
5522 struct ChurnRestartContext *startup_ctx = peer_restart_ctx->churn_restart_ctx;
5524 if (startup_ctx->outstanding > startup_ctx->pg->max_concurrent_ssh)
5525 GNUNET_SCHEDULER_add_delayed (
5526 GNUNET_TIME_relative_multiply (
5527 GNUNET_TIME_UNIT_MILLISECONDS,
5529 &schedule_churn_restart, peer_restart_ctx);
5532 GNUNET_TESTING_daemon_start_stopped (peer_restart_ctx->daemon,
5533 startup_ctx->timeout,
5534 &churn_start_callback, startup_ctx);
5535 GNUNET_free (peer_restart_ctx);
5541 internal_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5543 struct InternalStartContext *internal_context = cls;
5545 if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
5550 if ((internal_context->peer->pg->starting
5551 < internal_context->peer->pg->max_concurrent_ssh)
5552 || ((internal_context->hostname != NULL)
5553 && (count_outstanding_at_host (internal_context->hostname,
5554 internal_context->peer->pg)
5555 < internal_context->peer->pg->max_concurrent_ssh)))
5557 if (internal_context->hostname != NULL)
5558 increment_outstanding_at_host (internal_context->hostname,
5559 internal_context->peer->pg);
5560 internal_context->peer->pg->starting++;
5561 internal_context->peer->daemon
5562 = GNUNET_TESTING_daemon_start (internal_context->peer->cfg,
5563 internal_context->timeout,
5565 internal_context->hostname,
5566 internal_context->username,
5567 internal_context->sshport,
5568 internal_context->hostkey,
5569 &internal_hostkey_callback,
5571 &internal_startup_callback,
5576 GNUNET_SCHEDULER_add_delayed (
5577 GNUNET_TIME_relative_multiply (
5578 GNUNET_TIME_UNIT_MILLISECONDS,
5580 &internal_start, internal_context);
5583 #if USE_START_HELPER
5585 struct PeerStartHelperContext
5587 struct GNUNET_TESTING_PeerGroup *pg;
5589 struct HostData *host;
5591 struct GNUNET_OS_Process *proc;
5595 check_peers_started (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5597 struct PeerStartHelperContext *helper = cls;
5598 enum GNUNET_OS_ProcessStatusType type;
5601 GNUNET_TESTING_NotifyDaemonRunning cb;
5603 if (GNUNET_NO == GNUNET_OS_process_status (helper->proc, &type, &code)) /* Still running, wait some more! */
5605 GNUNET_SCHEDULER_add_delayed(GNUNET_CONSTANTS_EXEC_WAIT, &check_peers_started, helper);
5609 helper->pg->starting--;
5610 if (helper->pg->starting == 0) /* All peers have finished starting! */
5612 /* Call the peer started callback for each peer, set proper FSM state (?) */
5613 for (i = 0; i < helper->pg->total; i++)
5615 cb = helper->pg->peers[i].daemon->cb;
5616 helper->pg->peers[i].daemon->cb = NULL;
5617 helper->pg->peers[i].daemon->running = GNUNET_YES;
5618 helper->pg->peers[i].daemon->phase = SP_START_DONE;
5621 if ((type != GNUNET_OS_PROCESS_EXITED) || (code != 0))
5622 cb (helper->pg->peers[i].daemon->cb_cls,
5623 &helper->pg->peers[i].daemon->id,
5624 helper->pg->peers[i].daemon->cfg, helper->pg->peers[i].daemon,
5625 "Failed to execute peerStartHelper.pl, or return code bad!");
5627 cb (helper->pg->peers[i].daemon->cb_cls,
5628 &helper->pg->peers[i].daemon->id,
5629 helper->pg->peers[i].daemon->cfg, helper->pg->peers[i].daemon,
5636 GNUNET_OS_process_close(helper->proc);
5640 start_peer_helper (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5642 struct PeerStartHelperContext *helper = cls;
5643 char *baseservicehome;
5646 /* ssh user@host peerStartHelper /path/to/basedirectory */
5647 GNUNET_assert(GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (helper->pg->cfg, "PATHS", "SERVICEHOME",
5649 GNUNET_asprintf(&tempdir, "%s/%s/", baseservicehome, helper->host->hostname);
5650 if (NULL != helper->host->username)
5651 GNUNET_asprintf (&arg, "%s@%s", helper->host->username, helper->host->hostname);
5653 GNUNET_asprintf (&arg, "%s", helper->host->hostname);
5655 /* FIXME: Doesn't support ssh_port option! */
5656 helper->proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", arg,
5657 "peerStartHelper.pl", tempdir, NULL);
5658 GNUNET_assert(helper->proc != NULL);
5659 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "starting peers with cmd ssh %s %s %s\n", arg, "peerStartHelper.pl", tempdir);
5660 GNUNET_SCHEDULER_add_now (&check_peers_started, helper);
5661 GNUNET_free (tempdir);
5662 GNUNET_free (baseservicehome);
5668 * Function which continues a peer group starting up
5669 * after successfully generating hostkeys for each peer.
5671 * @param pg the peer group to continue starting
5675 GNUNET_TESTING_daemons_continue_startup(struct GNUNET_TESTING_PeerGroup *pg)
5679 #if USE_START_HELPER
5680 if ((pg->num_hosts > 0) && (pg->hostkey_data != NULL))
5682 struct PeerStartHelperContext *helper;
5683 pg->starting = pg->num_hosts;
5684 for (i = 0; i < pg->num_hosts; i++)
5686 helper = GNUNET_malloc(sizeof(struct PeerStartHelperContext));
5688 helper->host = &pg->hosts[i];
5689 GNUNET_SCHEDULER_add_now(&start_peer_helper, helper);
5695 for (i = 0; i < pg->total; i++)
5697 GNUNET_SCHEDULER_add_now (&internal_continue_startup,
5698 &pg->peers[i].internal_context);
5703 for (i = 0; i < pg->total; i++)
5705 GNUNET_SCHEDULER_add_now (&internal_continue_startup,
5706 &pg->peers[i].internal_context);
5711 #if USE_START_HELPER
5713 call_hostkey_callbacks (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5715 struct GNUNET_TESTING_PeerGroup *pg = cls;
5717 for (i = 0; i < pg->total; i++)
5719 if (pg->peers[i].internal_context.hostkey_callback != NULL)
5720 pg->peers[i].internal_context.hostkey_callback (pg->peers[i].internal_context.hostkey_cls,
5721 &pg->peers[i].daemon->id,
5722 pg->peers[i].daemon,
5726 if (pg->peers[0].internal_context.hostkey_callback == NULL)
5727 GNUNET_TESTING_daemons_continue_startup (pg);
5732 * Start count gnunet instances with the same set of transports and
5733 * applications. The port numbers (any option called "PORT") will be
5734 * adjusted to ensure that no two peers running on the same system
5735 * have the same port(s) in their respective configurations.
5737 * @param cfg configuration template to use
5738 * @param total number of daemons to start
5739 * @param max_concurrent_connections for testing, how many peers can
5740 * we connect to simultaneously
5741 * @param max_concurrent_ssh when starting with ssh, how many ssh
5742 * connections will we allow at once (based on remote hosts allowed!)
5743 * @param timeout total time allowed for peers to start
5744 * @param hostkey_callback function to call on each peers hostkey generation
5745 * if NULL, peers will be started by this call, if non-null,
5746 * GNUNET_TESTING_daemons_continue_startup must be called after
5747 * successful hostkey generation
5748 * @param hostkey_cls closure for hostkey callback
5749 * @param cb function to call on each daemon that was started
5750 * @param cb_cls closure for cb
5751 * @param connect_callback function to call each time two hosts are connected
5752 * @param connect_callback_cls closure for connect_callback
5753 * @param hostnames linked list of host structs to use to start peers on
5754 * (NULL to run on localhost only)
5756 * @return NULL on error, otherwise handle to control peer group
5758 struct GNUNET_TESTING_PeerGroup *
5759 GNUNET_TESTING_daemons_start(const struct GNUNET_CONFIGURATION_Handle *cfg,
5761 unsigned int max_concurrent_connections,
5762 unsigned int max_concurrent_ssh,
5763 struct GNUNET_TIME_Relative timeout,
5764 GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback,
5766 GNUNET_TESTING_NotifyDaemonRunning cb,
5768 GNUNET_TESTING_NotifyConnection connect_callback,
5769 void *connect_callback_cls,
5770 const struct GNUNET_TESTING_Host *hostnames)
5772 struct GNUNET_TESTING_PeerGroup *pg;
5773 const struct GNUNET_TESTING_Host *hostpos;
5774 const char *hostname;
5775 const char *username;
5776 char *baseservicehome;
5777 char *newservicehome;
5779 char *hostkeys_file;
5782 struct GNUNET_DISK_FileHandle *fd;
5783 struct GNUNET_CONFIGURATION_Handle *pcfg;
5785 struct OutstandingSSH *ssh_entry;
5786 unsigned int hostcnt;
5793 uint64_t total_hostkeys;
5794 struct GNUNET_OS_Process *proc;
5804 pg = GNUNET_malloc (sizeof (struct GNUNET_TESTING_PeerGroup));
5806 pg->notify_connection = connect_callback;
5807 pg->notify_connection_cls = connect_callback_cls;
5809 pg->max_timeout = GNUNET_TIME_relative_to_absolute (timeout);
5810 pg->peers = GNUNET_malloc (total * sizeof (struct PeerData));
5811 pg->max_outstanding_connections = max_concurrent_connections;
5812 pg->max_concurrent_ssh = max_concurrent_ssh;
5813 if (NULL != hostnames)
5816 hostpos = hostnames;
5817 while (hostpos != NULL)
5819 hostpos = hostpos->next;
5822 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
5825 hostpos = hostnames;
5826 while (hostpos != NULL)
5828 pg->hosts[off].minport = LOW_PORT;
5829 pg->hosts[off].hostname = GNUNET_strdup (hostpos->hostname);
5830 if (hostpos->username != NULL)
5831 pg->hosts[off].username = GNUNET_strdup (hostpos->username);
5832 pg->hosts[off].sshport = hostpos->port;
5833 hostpos = hostpos->next;
5843 pg->num_hosts = off;
5851 /* Create the servicehome directory for each remote peer */
5852 GNUNET_assert(GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (cfg, "PATHS", "SERVICEHOME",
5854 for (i = 0; i < pg->num_hosts; i++)
5856 ssh_entry = GNUNET_malloc(sizeof(struct OutstandingSSH));
5857 ssh_entry->hostname = pg->hosts[i].hostname; /* Don't free! */
5858 GNUNET_CONTAINER_DLL_insert(pg->ssh_head, pg->ssh_tail, ssh_entry);
5859 GNUNET_asprintf(&tmpdir, "%s/%s", baseservicehome, pg->hosts[i].hostname);
5860 if (NULL != pg->hosts[i].username)
5861 GNUNET_asprintf (&arg, "%s@%s", pg->hosts[i].username,
5862 pg->hosts[i].hostname);
5864 GNUNET_asprintf (&arg, "%s", pg->hosts[i].hostname);
5865 if (pg->hosts[i].sshport != 0)
5867 GNUNET_asprintf (&ssh_port_str, "%d", pg->hosts[i].sshport);
5868 proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", "-P",
5873 arg, "mkdir -p", tmpdir,
5877 proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", arg,
5878 "mkdir -p", tmpdir, NULL);
5879 GNUNET_assert(proc != NULL);
5880 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5881 "Creating remote dir with command ssh %s %s %s\n", arg,
5882 " mkdir -p ", tmpdir);
5883 GNUNET_free(tmpdir);
5885 GNUNET_OS_process_wait (proc);
5886 GNUNET_OS_process_close(proc);
5888 GNUNET_free(baseservicehome);
5890 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (cfg, "TESTING",
5894 if (GNUNET_YES != GNUNET_DISK_file_test (hostkeys_file))
5895 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Couldn't read hostkeys file!\n");
5898 /* Check hostkey file size, read entire thing into memory */
5899 fd = GNUNET_DISK_file_open (hostkeys_file, GNUNET_DISK_OPEN_READ,
5900 GNUNET_DISK_PERM_NONE);
5903 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, "open", hostkeys_file);
5907 if (GNUNET_YES != GNUNET_DISK_file_size (hostkeys_file, &fs,
5912 GNUNET_ERROR_TYPE_DEBUG,
5913 "Found file size %llu for hostkeys, expect hostkeys to be size %d\n",
5914 fs, HOSTKEYFILESIZE);
5916 if (fs % HOSTKEYFILESIZE != 0)
5918 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5919 "File size %llu seems incorrect for hostkeys...\n",
5924 total_hostkeys = fs / HOSTKEYFILESIZE;
5925 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5926 "Will read %llu hostkeys from file\n", total_hostkeys);
5927 pg->hostkey_data = GNUNET_malloc_large (fs);
5928 GNUNET_assert (fs == GNUNET_DISK_file_read (fd, pg->hostkey_data, fs));
5929 GNUNET_assert(GNUNET_OK == GNUNET_DISK_file_close(fd));
5932 GNUNET_free(hostkeys_file);
5935 for (off = 0; off < total; off++)
5939 hostname = pg->hosts[off % hostcnt].hostname;
5940 username = pg->hosts[off % hostcnt].username;
5941 sshport = pg->hosts[off % hostcnt].sshport;
5942 pcfg = make_config (cfg, off, &pg->hosts[off % hostcnt].minport,
5943 &upnum, hostname, &fdnum);
5950 pcfg = make_config (cfg, off, &minport, &upnum, hostname, &fdnum);
5955 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5956 ("Could not create configuration for peer number %u on `%s'!\n"),
5957 off, hostname == NULL ? "localhost" : hostname);
5962 == GNUNET_CONFIGURATION_get_value_string (pcfg, "PATHS",
5966 if (hostname != NULL)
5967 GNUNET_asprintf (&newservicehome, "%s/%s/%d/", baseservicehome, hostname, off);
5969 GNUNET_asprintf (&newservicehome, "%s/%d/", baseservicehome, off);
5970 #if !USE_START_HELPER
5971 GNUNET_free (baseservicehome);
5976 tmpdir = getenv ("TMPDIR");
5977 tmpdir = tmpdir ? tmpdir : "/tmp";
5978 if (hostname != NULL)
5979 GNUNET_asprintf (&newservicehome, "%s/%s/%s/%d/", tmpdir, hostname,
5980 "gnunet-testing-test-test", off);
5982 GNUNET_asprintf (&newservicehome, "%s/%s/%d/", tmpdir,
5983 "gnunet-testing-test-test", off);
5985 GNUNET_CONFIGURATION_set_value_string (pcfg, "PATHS", "SERVICEHOME",
5987 GNUNET_free (newservicehome);
5988 pg->peers[off].cfg = pcfg;
5989 pg->peers[off].pg = pg;
5990 pg->peers[off].internal_context.peer = &pg->peers[off];
5991 pg->peers[off].internal_context.timeout = timeout;
5992 pg->peers[off].internal_context.hostname = hostname;
5993 pg->peers[off].internal_context.username = username;
5994 pg->peers[off].internal_context.sshport = sshport;
5995 if (pg->hostkey_data != NULL)
5996 pg->peers[off].internal_context.hostkey = &pg->hostkey_data[off
5998 pg->peers[off].internal_context.hostkey_callback = hostkey_callback;
5999 pg->peers[off].internal_context.hostkey_cls = hostkey_cls;
6000 pg->peers[off].internal_context.start_cb = cb;
6001 pg->peers[off].internal_context.start_cb_cls = cb_cls;
6002 #if !USE_START_HELPER
6003 GNUNET_SCHEDULER_add_now (&internal_start,
6004 &pg->peers[off].internal_context);
6006 if ((pg->hostkey_data != NULL) && (hostcnt > 0))
6008 pg->peers[off].daemon = GNUNET_TESTING_daemon_start (pcfg,
6014 pg->peers[off].internal_context.hostkey,
6015 &internal_hostkey_callback,
6016 &pg->peers[off].internal_context,
6017 &internal_startup_callback,
6018 &pg->peers[off].internal_context);
6020 * At this point, given that we had a hostkeyfile,
6021 * we can call the hostkey callback!
6022 * But first, we should copy (rsync) all of the configs
6023 * and hostkeys to the remote peers. Then let topology
6024 * creation happen, then call the peer start helper processes,
6025 * then set pg->whatever_phase for each peer and let them
6026 * enter the fsm to get the HELLO's for peers and start connecting.
6031 GNUNET_SCHEDULER_add_now (&internal_start,
6032 &pg->peers[off].internal_context);
6038 #if USE_START_HELPER /* Now the peergroup has been set up, hostkeys and configs written to files. */
6039 if ((pg->hostkey_data != NULL) && (hostcnt > 0))
6041 for (off = 0; off < hostcnt; off++)
6043 GNUNET_asprintf(&newservicehome, "%s/%s/", baseservicehome, pg->hosts[off].hostname);
6045 if (NULL != username)
6046 GNUNET_asprintf (&arg, "%s@%s:%s/%s", username, pg->hosts[off].hostname, baseservicehome, pg->hosts[off].hostname);
6048 GNUNET_asprintf (&arg, "%s:%s/%s", pg->hosts[off].hostname, baseservicehome, pg->hosts[off].hostname);
6050 /* FIXME: Doesn't support ssh_port option! */
6051 proc = GNUNET_OS_start_process (NULL, NULL, "rsync", "rsync", "-r", newservicehome, arg, NULL);
6053 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "copying directory with command rsync -r %s %s\n", newservicehome, arg);
6059 GNUNET_ERROR_TYPE_ERROR,
6061 ("Could not start `%s' process to copy configuration directory.\n"),
6065 GNUNET_OS_process_wait (proc);
6066 GNUNET_OS_process_close (proc);
6068 /* Now all the configuration files and hostkeys are copied to the remote host. Call the hostkey callback for each peer! */
6069 GNUNET_SCHEDULER_add_now(&call_hostkey_callbacks, pg);
6071 GNUNET_free (baseservicehome);
6077 * Get a daemon by number, so callers don't have to do nasty
6078 * offsetting operation.
6080 struct GNUNET_TESTING_Daemon *
6081 GNUNET_TESTING_daemon_get(struct GNUNET_TESTING_PeerGroup *pg,
6082 unsigned int position)
6084 if (position < pg->total)
6085 return pg->peers[position].daemon;
6091 * Get a daemon by peer identity, so callers can
6092 * retrieve the daemon without knowing it's offset.
6094 * @param pg the peer group to retrieve the daemon from
6095 * @param peer_id the peer identity of the daemon to retrieve
6097 * @return the daemon on success, or NULL if no such peer identity is found
6099 struct GNUNET_TESTING_Daemon *
6100 GNUNET_TESTING_daemon_get_by_id(struct GNUNET_TESTING_PeerGroup *pg,
6101 struct GNUNET_PeerIdentity *peer_id)
6105 for (i = 0; i < pg->total; i++)
6107 if (0 == memcmp (&pg->peers[i].daemon->id, peer_id,
6108 sizeof(struct GNUNET_PeerIdentity)))
6109 return pg->peers[i].daemon;
6116 * Prototype of a function that will be called when a
6117 * particular operation was completed the testing library.
6119 * @param cls closure (a struct RestartContext)
6120 * @param id id of the peer that was restarted
6121 * @param cfg handle to the configuration of the peer
6122 * @param d handle to the daemon that was restarted
6123 * @param emsg NULL on success
6126 restart_callback(void *cls, const struct GNUNET_PeerIdentity *id,
6127 const struct GNUNET_CONFIGURATION_Handle *cfg,
6128 struct GNUNET_TESTING_Daemon *d, const char *emsg)
6130 struct RestartContext *restart_context = cls;
6134 restart_context->peers_restarted++;
6138 restart_context->peers_restart_failed++;
6141 if (restart_context->peers_restarted == restart_context->peer_group->total)
6143 restart_context->callback (restart_context->callback_cls, NULL);
6144 GNUNET_free (restart_context);
6146 else if (restart_context->peers_restart_failed
6147 + restart_context->peers_restarted == restart_context->peer_group->total)
6149 restart_context->callback (restart_context->callback_cls,
6150 "Failed to restart peers!");
6151 GNUNET_free (restart_context);
6157 * Callback for informing us about a successful
6158 * or unsuccessful churn stop call.
6160 * @param cls a ChurnContext
6161 * @param emsg NULL on success, non-NULL on failure
6165 churn_stop_callback(void *cls, const char *emsg)
6167 struct ShutdownContext *shutdown_ctx = cls;
6168 struct ChurnContext *churn_ctx = shutdown_ctx->cb_cls;
6169 unsigned int total_left;
6170 char *error_message;
6172 error_message = NULL;
6173 shutdown_ctx->outstanding--;
6177 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6178 "Churn stop callback failed with error `%s'\n", emsg);
6179 churn_ctx->num_failed_stop++;
6183 churn_ctx->num_to_stop--;
6187 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6188 "Stopped peer, %d left.\n", churn_ctx->num_to_stop);
6190 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop)
6191 + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
6193 if (total_left == 0)
6195 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
6199 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
6200 churn_ctx->num_failed_start,
6201 churn_ctx->num_failed_stop);
6203 churn_ctx->cb (churn_ctx->cb_cls, error_message);
6204 GNUNET_free_non_null (error_message);
6205 GNUNET_free (churn_ctx);
6206 GNUNET_free (shutdown_ctx);
6211 * Count the number of running peers.
6213 * @param pg handle for the peer group
6215 * @return the number of currently running peers in the peer group
6218 GNUNET_TESTING_daemons_running(struct GNUNET_TESTING_PeerGroup *pg)
6221 unsigned int running = 0;
6222 for (i = 0; i < pg->total; i++)
6224 if (pg->peers[i].daemon->running == GNUNET_YES)
6226 GNUNET_assert (running != -1);
6234 * Task to rate limit the number of outstanding peer shutdown
6235 * requests. This is necessary for making sure we don't do
6236 * too many ssh connections at once, but is generally nicer
6237 * to any system as well (graduated task starts, as opposed
6238 * to calling gnunet-arm N times all at once).
6241 schedule_churn_shutdown_task(void *cls,
6242 const struct GNUNET_SCHEDULER_TaskContext *tc)
6244 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6245 struct ShutdownContext *shutdown_ctx;
6246 struct ChurnContext *churn_ctx;
6247 GNUNET_assert (peer_shutdown_ctx != NULL);
6248 shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6249 GNUNET_assert (shutdown_ctx != NULL);
6250 churn_ctx = (struct ChurnContext *) shutdown_ctx->cb_cls;
6251 if (shutdown_ctx->outstanding > churn_ctx->pg->max_concurrent_ssh)
6252 GNUNET_SCHEDULER_add_delayed (
6253 GNUNET_TIME_relative_multiply (
6254 GNUNET_TIME_UNIT_MILLISECONDS,
6256 &schedule_churn_shutdown_task,
6260 shutdown_ctx->outstanding++;
6261 GNUNET_TESTING_daemon_stop (peer_shutdown_ctx->daemon,
6262 shutdown_ctx->timeout, shutdown_ctx->cb,
6263 shutdown_ctx, GNUNET_NO, GNUNET_YES);
6264 GNUNET_free (peer_shutdown_ctx);
6269 * Simulate churn by stopping some peers (and possibly
6270 * re-starting others if churn is called multiple times). This
6271 * function can only be used to create leave-join churn (peers "never"
6272 * leave for good). First "voff" random peers that are currently
6273 * online will be taken offline; then "von" random peers that are then
6274 * offline will be put back online. No notifications will be
6275 * generated for any of these operations except for the callback upon
6278 * @param pg handle for the peer group
6279 * @param voff number of peers that should go offline
6280 * @param von number of peers that should come back online;
6281 * must be zero on first call (since "testbed_start"
6282 * always starts all of the peers)
6283 * @param timeout how long to wait for operations to finish before
6285 * @param cb function to call at the end
6286 * @param cb_cls closure for cb
6289 GNUNET_TESTING_daemons_churn(struct GNUNET_TESTING_PeerGroup *pg,
6290 unsigned int voff, unsigned int von,
6291 struct GNUNET_TIME_Relative timeout,
6292 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6294 struct ChurnContext *churn_ctx;
6295 struct ShutdownContext *shutdown_ctx;
6296 struct PeerShutdownContext *peer_shutdown_ctx;
6297 struct PeerRestartContext *peer_restart_ctx;
6298 struct ChurnRestartContext *churn_startup_ctx;
6300 unsigned int running;
6301 unsigned int stopped;
6302 unsigned int total_running;
6303 unsigned int total_stopped;
6305 unsigned int *running_arr;
6306 unsigned int *stopped_arr;
6307 unsigned int *running_permute;
6308 unsigned int *stopped_permute;
6313 if ((von == 0) && (voff == 0)) /* No peers at all? */
6319 for (i = 0; i < pg->total; i++)
6321 if (pg->peers[i].daemon->running == GNUNET_YES)
6323 GNUNET_assert (running != -1);
6328 GNUNET_assert (stopped != -1);
6335 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6336 "Trying to stop more peers than are currently running!\n");
6337 cb (cb_cls, "Trying to stop more peers than are currently running!");
6343 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6344 "Trying to start more peers than are currently stopped!\n");
6345 cb (cb_cls, "Trying to start more peers than are currently stopped!");
6349 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6353 running_arr = GNUNET_malloc (running * sizeof (unsigned int));
6357 stopped_arr = GNUNET_malloc (stopped * sizeof (unsigned int));
6359 running_permute = NULL;
6360 stopped_permute = NULL;
6363 running_permute = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
6366 stopped_permute = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
6369 total_running = running;
6370 total_stopped = stopped;
6374 churn_ctx->num_to_start = von;
6375 churn_ctx->num_to_stop = voff;
6377 churn_ctx->cb_cls = cb_cls;
6380 for (i = 0; i < pg->total; i++)
6382 if (pg->peers[i].daemon->running == GNUNET_YES)
6384 GNUNET_assert ((running_arr != NULL) && (total_running > running));
6385 running_arr[running] = i;
6390 GNUNET_assert ((stopped_arr != NULL) && (total_stopped > stopped));
6391 stopped_arr[stopped] = i;
6396 GNUNET_assert (running >= voff);
6399 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6400 shutdown_ctx->cb = &churn_stop_callback;
6401 shutdown_ctx->cb_cls = churn_ctx;
6402 shutdown_ctx->total_peers = voff;
6403 shutdown_ctx->timeout = timeout;
6406 for (i = 0; i < voff; i++)
6409 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Stopping peer %d!\n",
6410 running_permute[i]);
6412 GNUNET_assert (running_arr != NULL);
6413 peer_shutdown_ctx = GNUNET_malloc (sizeof (struct PeerShutdownContext));
6414 peer_shutdown_ctx->daemon
6415 = pg->peers[running_arr[running_permute[i]]].daemon;
6416 peer_shutdown_ctx->shutdown_ctx = shutdown_ctx;
6417 GNUNET_SCHEDULER_add_now (&schedule_churn_shutdown_task,
6421 GNUNET_TESTING_daemon_stop (pg->peers[running_arr[running_permute[i]]].daemon,
6423 &churn_stop_callback, churn_ctx,
6424 GNUNET_NO, GNUNET_YES); */
6427 GNUNET_assert (stopped >= von);
6430 churn_startup_ctx = GNUNET_malloc (sizeof (struct ChurnRestartContext));
6431 churn_startup_ctx->churn_ctx = churn_ctx;
6432 churn_startup_ctx->timeout = timeout;
6433 churn_startup_ctx->pg = pg;
6435 for (i = 0; i < von; i++)
6438 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Starting up peer %d!\n",
6439 stopped_permute[i]);
6441 GNUNET_assert (stopped_arr != NULL);
6442 peer_restart_ctx = GNUNET_malloc (sizeof (struct PeerRestartContext));
6443 peer_restart_ctx->churn_restart_ctx = churn_startup_ctx;
6444 peer_restart_ctx->daemon
6445 = pg->peers[stopped_arr[stopped_permute[i]]].daemon;
6446 GNUNET_SCHEDULER_add_now (&schedule_churn_restart, peer_restart_ctx);
6448 GNUNET_TESTING_daemon_start_stopped(pg->peers[stopped_arr[stopped_permute[i]]].daemon,
6449 timeout, &churn_start_callback, churn_ctx); */
6452 GNUNET_free_non_null (running_arr);
6453 GNUNET_free_non_null (stopped_arr);
6454 GNUNET_free_non_null (running_permute);
6455 GNUNET_free_non_null (stopped_permute);
6459 * Restart all peers in the given group.
6461 * @param pg the handle to the peer group
6462 * @param callback function to call on completion (or failure)
6463 * @param callback_cls closure for the callback function
6466 GNUNET_TESTING_daemons_restart(struct GNUNET_TESTING_PeerGroup *pg,
6467 GNUNET_TESTING_NotifyCompletion callback,
6470 struct RestartContext *restart_context;
6475 restart_context = GNUNET_malloc (sizeof (struct RestartContext));
6476 restart_context->peer_group = pg;
6477 restart_context->peers_restarted = 0;
6478 restart_context->callback = callback;
6479 restart_context->callback_cls = callback_cls;
6481 for (off = 0; off < pg->total; off++)
6483 GNUNET_TESTING_daemon_restart (pg->peers[off].daemon,
6484 &restart_callback, restart_context);
6490 * Start or stop an individual peer from the given group.
6492 * @param pg handle to the peer group
6493 * @param offset which peer to start or stop
6494 * @param desired_status GNUNET_YES to have it running, GNUNET_NO to stop it
6495 * @param timeout how long to wait for shutdown
6496 * @param cb function to call at the end
6497 * @param cb_cls closure for cb
6500 GNUNET_TESTING_daemons_vary(struct GNUNET_TESTING_PeerGroup *pg,
6501 unsigned int offset, int desired_status,
6502 struct GNUNET_TIME_Relative timeout,
6503 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6505 struct ShutdownContext *shutdown_ctx;
6506 struct ChurnRestartContext *startup_ctx;
6507 struct ChurnContext *churn_ctx;
6509 if (GNUNET_NO == desired_status)
6511 if (NULL != pg->peers[offset].daemon)
6513 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6514 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6515 churn_ctx->num_to_start = 0;
6516 churn_ctx->num_to_stop = 1;
6518 churn_ctx->cb_cls = cb_cls;
6519 shutdown_ctx->cb_cls = churn_ctx;
6520 GNUNET_TESTING_daemon_stop (pg->peers[offset].daemon, timeout,
6521 &churn_stop_callback, shutdown_ctx,
6522 GNUNET_NO, GNUNET_YES);
6525 else if (GNUNET_YES == desired_status)
6527 if (NULL == pg->peers[offset].daemon)
6529 startup_ctx = GNUNET_malloc (sizeof (struct ChurnRestartContext));
6530 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6531 churn_ctx->num_to_start = 1;
6532 churn_ctx->num_to_stop = 0;
6534 churn_ctx->cb_cls = cb_cls;
6535 startup_ctx->churn_ctx = churn_ctx;
6536 GNUNET_TESTING_daemon_start_stopped (pg->peers[offset].daemon,
6537 timeout, &churn_start_callback,
6546 * Callback for shutting down peers in a peer group.
6548 * @param cls closure (struct ShutdownContext)
6549 * @param emsg NULL on success
6552 internal_shutdown_callback(void *cls, const char *emsg)
6554 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6555 struct ShutdownContext *shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6557 struct OutstandingSSH *ssh_pos;
6559 shutdown_ctx->outstanding--;
6560 if (peer_shutdown_ctx->daemon->hostname != NULL)
6561 decrement_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6566 shutdown_ctx->peers_down++;
6570 shutdown_ctx->peers_failed++;
6573 if ((shutdown_ctx->cb != NULL) && (shutdown_ctx->peers_down
6574 + shutdown_ctx->peers_failed == shutdown_ctx->total_peers))
6576 if (shutdown_ctx->peers_failed > 0)
6577 shutdown_ctx->cb (shutdown_ctx->cb_cls,
6578 "Not all peers successfully shut down!");
6580 shutdown_ctx->cb (shutdown_ctx->cb_cls, NULL);
6582 GNUNET_free (shutdown_ctx->pg->peers);
6583 GNUNET_free_non_null(shutdown_ctx->pg->hostkey_data);
6584 for (off = 0; off < shutdown_ctx->pg->num_hosts; off++)
6586 GNUNET_free (shutdown_ctx->pg->hosts[off].hostname);
6587 GNUNET_free_non_null (shutdown_ctx->pg->hosts[off].username);
6589 GNUNET_free_non_null (shutdown_ctx->pg->hosts);
6590 while (NULL != (ssh_pos = shutdown_ctx->pg->ssh_head))
6592 GNUNET_CONTAINER_DLL_remove(shutdown_ctx->pg->ssh_head, shutdown_ctx->pg->ssh_tail, ssh_pos);
6593 GNUNET_free(ssh_pos);
6595 GNUNET_free (shutdown_ctx->pg);
6596 GNUNET_free (shutdown_ctx);
6598 GNUNET_free(peer_shutdown_ctx);
6602 * Task to rate limit the number of outstanding peer shutdown
6603 * requests. This is necessary for making sure we don't do
6604 * too many ssh connections at once, but is generally nicer
6605 * to any system as well (graduated task starts, as opposed
6606 * to calling gnunet-arm N times all at once).
6609 schedule_shutdown_task(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
6611 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6612 struct ShutdownContext *shutdown_ctx;
6614 GNUNET_assert (peer_shutdown_ctx != NULL);
6615 shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6616 GNUNET_assert (shutdown_ctx != NULL);
6618 if ((shutdown_ctx->outstanding < shutdown_ctx->pg->max_concurrent_ssh)
6619 || ((peer_shutdown_ctx->daemon->hostname != NULL)
6620 && (count_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6622 < shutdown_ctx->pg->max_concurrent_ssh)))
6624 if (peer_shutdown_ctx->daemon->hostname != NULL)
6625 increment_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6627 shutdown_ctx->outstanding++;
6628 GNUNET_TESTING_daemon_stop (peer_shutdown_ctx->daemon,
6629 shutdown_ctx->timeout,
6630 &internal_shutdown_callback, peer_shutdown_ctx,
6631 GNUNET_YES, GNUNET_NO);
6634 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
6636 &schedule_shutdown_task, peer_shutdown_ctx);
6641 * Shutdown all peers started in the given group.
6643 * @param pg handle to the peer group
6644 * @param timeout how long to wait for shutdown
6645 * @param cb callback to notify upon success or failure
6646 * @param cb_cls closure for cb
6649 GNUNET_TESTING_daemons_stop(struct GNUNET_TESTING_PeerGroup *pg,
6650 struct GNUNET_TIME_Relative timeout,
6651 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6654 struct ShutdownContext *shutdown_ctx;
6655 struct PeerShutdownContext *peer_shutdown_ctx;
6657 struct PeerConnection *conn_iter;
6658 struct PeerConnection *temp_conn;
6661 GNUNET_assert (pg->total > 0);
6663 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6664 shutdown_ctx->cb = cb;
6665 shutdown_ctx->cb_cls = cb_cls;
6666 shutdown_ctx->total_peers = pg->total;
6667 shutdown_ctx->timeout = timeout;
6668 shutdown_ctx->pg = pg;
6669 /* shtudown_ctx->outstanding = 0; */
6671 for (off = 0; off < pg->total; off++)
6673 GNUNET_assert (NULL != pg->peers[off].daemon);
6674 peer_shutdown_ctx = GNUNET_malloc (sizeof (struct PeerShutdownContext));
6675 peer_shutdown_ctx->daemon = pg->peers[off].daemon;
6676 peer_shutdown_ctx->shutdown_ctx = shutdown_ctx;
6677 GNUNET_SCHEDULER_add_now (&schedule_shutdown_task, peer_shutdown_ctx);
6679 if (NULL != pg->peers[off].cfg)
6681 GNUNET_CONFIGURATION_destroy (pg->peers[off].cfg);
6682 pg->peers[off].cfg = NULL;
6685 conn_iter = pg->peers[off].allowed_peers_head;
6686 while (conn_iter != NULL)
6688 temp_conn = conn_iter->next;
6689 GNUNET_free(conn_iter);
6690 conn_iter = temp_conn;
6693 conn_iter = pg->peers[off].connect_peers_head;
6694 while (conn_iter != NULL)
6696 temp_conn = conn_iter->next;
6697 GNUNET_free(conn_iter);
6698 conn_iter = temp_conn;
6701 conn_iter = pg->peers[off].blacklisted_peers_head;
6702 while (conn_iter != NULL)
6704 temp_conn = conn_iter->next;
6705 GNUNET_free(conn_iter);
6706 conn_iter = temp_conn;
6709 conn_iter = pg->peers[off].connect_peers_working_set_head;
6710 while (conn_iter != NULL)
6712 temp_conn = conn_iter->next;
6713 GNUNET_free(conn_iter);
6714 conn_iter = temp_conn;
6717 if (pg->peers[off].allowed_peers != NULL)
6718 GNUNET_CONTAINER_multihashmap_destroy (pg->peers[off].allowed_peers);
6719 if (pg->peers[off].connect_peers != NULL)
6720 GNUNET_CONTAINER_multihashmap_destroy (pg->peers[off].connect_peers);
6721 if (pg->peers[off].blacklisted_peers != NULL)
6722 GNUNET_CONTAINER_multihashmap_destroy (pg->
6723 peers[off].blacklisted_peers);
6728 /* end of testing_group.c */