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_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "USE_LOCALADDR",
1415 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "USE_LOCALADDR",
1417 GNUNET_free_non_null (control_host);
1418 GNUNET_free (allowed_hosts);
1421 /* arm needs to know to allow connections from the host on which it is running,
1422 * otherwise gnunet-arm is unable to connect to it in some instances */
1423 if (hostname != NULL)
1425 GNUNET_asprintf (&allowed_hosts, "%s; 127.0.0.1;", hostname);
1426 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "BINDTO",
1428 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "BINDTO",
1430 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "USE_LOCALADDR",
1432 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "USE_LOCALADDR",
1434 GNUNET_CONFIGURATION_set_value_string (uc.ret, "arm", "ACCEPT_FROM",
1436 GNUNET_free (allowed_hosts);
1440 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "BINDTO",
1442 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "BINDTO",
1444 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-tcp", "USE_LOCALADDR",
1446 GNUNET_CONFIGURATION_set_value_string (uc.ret, "transport-udp", "USE_LOCALADDR",
1450 *port = (uint16_t) uc.nport;
1458 * Remove entries from the peer connection list
1460 * @param pg the peer group we are working with
1461 * @param first index of the first peer
1462 * @param second index of the second peer
1463 * @param list the peer list to use
1464 * @param check UNUSED
1466 * @return the number of connections added (can be 0, 1 or 2)
1470 remove_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first,
1471 unsigned int second, enum PeerLists list, unsigned int check)
1475 struct PeerConnection **first_list;
1476 struct PeerConnection **second_list;
1477 struct PeerConnection *first_iter;
1478 struct PeerConnection *second_iter;
1479 struct PeerConnection **first_tail;
1480 struct PeerConnection **second_tail;
1483 GNUNET_HashCode hash_first;
1484 GNUNET_HashCode hash_second;
1486 hash_from_uid (first, &hash_first);
1487 hash_from_uid (second, &hash_second);
1495 first_list = &pg->peers[first].allowed_peers_head;
1496 second_list = &pg->peers[second].allowed_peers_head;
1497 first_tail = &pg->peers[first].allowed_peers_tail;
1498 second_tail = &pg->peers[second].allowed_peers_tail;
1501 first_list = &pg->peers[first].connect_peers_head;
1502 second_list = &pg->peers[second].connect_peers_head;
1503 first_tail = &pg->peers[first].connect_peers_tail;
1504 second_tail = &pg->peers[second].connect_peers_tail;
1507 first_list = &pg->peers[first].blacklisted_peers_head;
1508 second_list = &pg->peers[second].blacklisted_peers_head;
1509 first_tail = &pg->peers[first].blacklisted_peers_tail;
1510 second_tail = &pg->peers[second].blacklisted_peers_tail;
1513 first_list = &pg->peers[first].connect_peers_working_set_head;
1514 second_list = &pg->peers[second].connect_peers_working_set_head;
1515 first_tail = &pg->peers[first].connect_peers_working_set_tail;
1516 second_tail = &pg->peers[second].connect_peers_working_set_tail;
1523 first_iter = *first_list;
1524 while (first_iter != NULL)
1526 if (first_iter->index == second)
1528 GNUNET_CONTAINER_DLL_remove(*first_list, *first_tail, first_iter);
1529 GNUNET_free(first_iter);
1533 first_iter = first_iter->next;
1536 second_iter = *second_list;
1537 while (second_iter != NULL)
1539 if (second_iter->index == first)
1541 GNUNET_CONTAINER_DLL_remove(*second_list, *second_tail, second_iter);
1542 GNUNET_free(second_iter);
1546 second_iter = second_iter->next;
1550 GNUNET_CONTAINER_multihashmap_contains (pg->peers[first].blacklisted_peers,
1553 GNUNET_CONTAINER_multihashmap_remove_all (pg->peers[first].blacklisted_peers,
1558 GNUNET_CONTAINER_multihashmap_contains (pg->peers[second].blacklisted_peers,
1561 GNUNET_CONTAINER_multihashmap_remove_all (pg->peers[second].blacklisted_peers,
1570 * Add entries to the some list
1572 * @param pg the peer group we are working with
1573 * @param first index of the first peer
1574 * @param second index of the second peer
1575 * @param list the list type that we should modify
1576 * @param check GNUNET_YES to check lists before adding
1577 * GNUNET_NO to force add
1579 * @return the number of connections added (can be 0, 1 or 2)
1583 add_connections(struct GNUNET_TESTING_PeerGroup *pg, unsigned int first,
1584 unsigned int second, enum PeerLists list, unsigned int check)
1590 struct PeerConnection **first_list;
1591 struct PeerConnection **second_list;
1592 struct PeerConnection *first_iter;
1593 struct PeerConnection *second_iter;
1594 struct PeerConnection *new_first;
1595 struct PeerConnection *new_second;
1596 struct PeerConnection **first_tail;
1597 struct PeerConnection **second_tail;
1602 first_list = &pg->peers[first].allowed_peers_head;
1603 second_list = &pg->peers[second].allowed_peers_head;
1604 first_tail = &pg->peers[first].allowed_peers_tail;
1605 second_tail = &pg->peers[second].allowed_peers_tail;
1608 first_list = &pg->peers[first].connect_peers_head;
1609 second_list = &pg->peers[second].connect_peers_head;
1610 first_tail = &pg->peers[first].connect_peers_tail;
1611 second_tail = &pg->peers[second].connect_peers_tail;
1614 first_list = &pg->peers[first].blacklisted_peers_head;
1615 second_list = &pg->peers[second].blacklisted_peers_head;
1616 first_tail = &pg->peers[first].blacklisted_peers_tail;
1617 second_tail = &pg->peers[second].blacklisted_peers_tail;
1620 first_list = &pg->peers[first].connect_peers_working_set_head;
1621 second_list = &pg->peers[second].connect_peers_working_set_head;
1622 first_tail = &pg->peers[first].connect_peers_working_set_tail;
1623 second_tail = &pg->peers[second].connect_peers_working_set_tail;
1630 add_first = GNUNET_YES;
1631 add_second = GNUNET_YES;
1633 if (check == GNUNET_YES)
1635 first_iter = *first_list;
1636 while (first_iter != NULL)
1638 if (first_iter->index == second)
1640 add_first = GNUNET_NO;
1643 first_iter = first_iter->next;
1646 second_iter = *second_list;
1647 while (second_iter != NULL)
1649 if (second_iter->index == first)
1651 add_second = GNUNET_NO;
1654 second_iter = second_iter->next;
1661 new_first = GNUNET_malloc (sizeof (struct PeerConnection));
1662 new_first->index = second;
1663 GNUNET_CONTAINER_DLL_insert(*first_list, *first_tail, new_first);
1664 pg->peers[first].num_connections++;
1670 new_second = GNUNET_malloc (sizeof (struct PeerConnection));
1671 new_second->index = first;
1672 GNUNET_CONTAINER_DLL_insert(*second_list, *second_tail, new_second);
1673 pg->peers[second].num_connections++;
1681 * Scale free network construction as described in:
1683 * "Emergence of Scaling in Random Networks." Science 286, 509-512, 1999.
1685 * Start with a network of "one" peer, then progressively add
1686 * peers up to the total number. At each step, iterate over
1687 * all possible peers and connect new peer based on number of
1688 * existing connections of the target peer.
1690 * @param pg the peer group we are dealing with
1691 * @param proc the connection processor to use
1692 * @param list the peer list to use
1694 * @return the number of connections created
1697 create_scale_free(struct GNUNET_TESTING_PeerGroup *pg,
1698 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
1701 unsigned int total_connections;
1702 unsigned int outer_count;
1704 unsigned int previous_total_connections;
1708 GNUNET_assert (pg->total > 1);
1710 /* Add a connection between the first two nodes */
1711 total_connections = proc (pg, 0, 1, list, GNUNET_YES);
1713 for (outer_count = 1; outer_count < pg->total; outer_count++)
1715 previous_total_connections = total_connections;
1716 for (i = 0; i < outer_count; i++)
1718 probability = pg->peers[i].num_connections
1719 / (double) previous_total_connections;
1721 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
1723 / ((double) UINT64_MAX);
1725 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1726 "Considering connecting peer %d to peer %d\n",
1729 if (random < probability)
1732 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1733 "Connecting peer %d to peer %d\n", outer_count, i);
1735 total_connections += proc (pg, outer_count, i, list, GNUNET_YES);
1740 return total_connections;
1744 * Create a topology given a peer group (set of running peers)
1745 * and a connection processor. Creates a small world topology
1746 * according to the rewired ring construction. The basic
1747 * behavior is that a ring topology is created, but with some
1748 * probability instead of connecting a peer to the next
1749 * neighbor in the ring a connection will be created to a peer
1750 * selected uniformly at random. We use the TESTING
1751 * PERCENTAGE option to specify what number of
1752 * connections each peer should have. Default is 2,
1753 * which makes the ring, any given number is multiplied by
1754 * the log of the network size; i.e. a PERCENTAGE of 2 makes
1755 * each peer have on average 2logn connections. The additional
1756 * connections are made at increasing distance around the ring
1757 * from the original peer, or to random peers based on the re-
1758 * wiring probability. The TESTING
1759 * PROBABILITY option is used as the probability that a given
1760 * connection is rewired.
1762 * @param pg the peergroup to create the topology on
1763 * @param proc the connection processor to call to actually set
1764 * up connections between two peers
1765 * @param list the peer list to use
1767 * @return the number of connections that were set up
1771 create_small_world_ring(struct GNUNET_TESTING_PeerGroup *pg,
1772 GNUNET_TESTING_ConnectionProcessor proc,
1773 enum PeerLists list)
1777 unsigned int natLog;
1778 unsigned int randomPeer;
1779 double random, logNModifier, probability;
1780 unsigned int smallWorldConnections;
1785 unsigned int useAnd;
1786 int connect_attempts;
1788 logNModifier = 0.5; /* FIXME: default value? */
1789 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1793 if (sscanf (p_string, "%lf", &logNModifier) != 1)
1795 GNUNET_ERROR_TYPE_WARNING,
1797 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1798 p_string, "LOGNMODIFIER", "TESTING");
1799 GNUNET_free (p_string);
1801 probability = 0.5; /* FIXME: default percentage? */
1802 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1806 if (sscanf (p_string, "%lf", &probability) != 1)
1808 GNUNET_ERROR_TYPE_WARNING,
1810 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1811 p_string, "PERCENTAGE", "TESTING");
1812 GNUNET_free (p_string);
1814 natLog = log (pg->total);
1815 connsPerPeer = ceil (natLog * logNModifier);
1817 if (connsPerPeer % 2 == 1)
1820 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Target is %d connections per peer."),
1823 smallWorldConnections = 0;
1824 connect_attempts = 0;
1825 for (i = 0; i < pg->total; i++)
1828 max = i + connsPerPeer / 2;
1829 min = i - connsPerPeer / 2;
1831 if (max > pg->total - 1)
1833 max = max - pg->total;
1839 min = pg->total - 1 + min;
1843 for (j = 0; j < connsPerPeer / 2; j++)
1846 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
1848 / ((double) UINT64_MAX));
1849 if (random < probability)
1851 /* Connect to uniformly selected random peer */
1853 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1855 while ((((randomPeer < max) && (randomPeer > min)) && (useAnd
1856 == 0)) || (((randomPeer > min) || (randomPeer < max))
1860 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
1863 smallWorldConnections += proc (pg, i, randomPeer, list,
1868 nodeToConnect = i + j + 1;
1869 if (nodeToConnect > pg->total - 1)
1871 nodeToConnect = nodeToConnect - pg->total;
1873 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
1879 connect_attempts += smallWorldConnections;
1881 return connect_attempts;
1885 * Create a topology given a peer group (set of running peers)
1886 * and a connection processor.
1888 * @param pg the peergroup to create the topology on
1889 * @param proc the connection processor to call to actually set
1890 * up connections between two peers
1891 * @param list the peer list to use
1893 * @return the number of connections that were set up
1897 create_nated_internet(struct GNUNET_TESTING_PeerGroup *pg,
1898 GNUNET_TESTING_ConnectionProcessor proc,
1899 enum PeerLists list)
1901 unsigned int outer_count, inner_count;
1902 unsigned int cutoff;
1903 int connect_attempts;
1904 double nat_percentage;
1907 nat_percentage = 0.6; /* FIXME: default percentage? */
1908 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1912 if (sscanf (p_string, "%lf", &nat_percentage) != 1)
1914 GNUNET_ERROR_TYPE_WARNING,
1916 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1917 p_string, "PERCENTAGE", "TESTING");
1918 GNUNET_free (p_string);
1921 cutoff = (unsigned int) (nat_percentage * pg->total);
1922 connect_attempts = 0;
1923 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1925 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
1927 if ((outer_count > cutoff) || (inner_count > cutoff))
1930 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1931 "Connecting peer %d to peer %d\n",
1932 outer_count, inner_count);
1934 connect_attempts += proc (pg, outer_count, inner_count, list,
1939 return connect_attempts;
1944 * Create a topology given a peer group (set of running peers)
1945 * and a connection processor.
1947 * @param pg the peergroup to create the topology on
1948 * @param proc the connection processor to call to actually set
1949 * up connections between two peers
1950 * @param list the peer list to use
1952 * @return the number of connections that were set up
1956 create_nated_internet_copy(struct GNUNET_TESTING_PeerGroup *pg,
1957 GNUNET_TESTING_ConnectionProcessor proc,
1958 enum PeerLists list)
1960 unsigned int outer_count, inner_count;
1961 unsigned int cutoff;
1962 int connect_attempts;
1963 double nat_percentage;
1966 struct ProgressMeter *conn_meter;
1968 nat_percentage = 0.6; /* FIXME: default percentage? */
1969 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
1973 if (sscanf (p_string, "%lf", &nat_percentage) != 1)
1975 GNUNET_ERROR_TYPE_WARNING,
1977 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
1978 p_string, "PERCENTAGE", "TESTING");
1979 GNUNET_free (p_string);
1982 cutoff = (unsigned int) (nat_percentage * pg->total);
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))
1994 conn_meter = create_meter (count, "NAT COPY", GNUNET_YES);
1995 connect_attempts = 0;
1996 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
1998 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
2000 if ((outer_count > cutoff) || (inner_count > cutoff))
2003 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2004 "Connecting peer %d to peer %d\n",
2005 outer_count, inner_count);
2007 connect_attempts += proc (pg, outer_count, inner_count, list,
2009 add_connections (pg, outer_count, inner_count, ALLOWED, GNUNET_NO);
2010 update_meter (conn_meter);
2014 free_meter (conn_meter);
2016 return connect_attempts;
2021 * Create a topology given a peer group (set of running peers)
2022 * and a connection processor.
2024 * @param pg the peergroup to create the topology on
2025 * @param proc the connection processor to call to actually set
2026 * up connections between two peers
2027 * @param list the peer list to use
2029 * @return the number of connections that were set up
2033 create_small_world(struct GNUNET_TESTING_PeerGroup *pg,
2034 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2036 unsigned int i, j, k;
2037 unsigned int square;
2040 unsigned int toggle = 1;
2041 unsigned int nodeToConnect;
2042 unsigned int natLog;
2043 unsigned int node1Row;
2044 unsigned int node1Col;
2045 unsigned int node2Row;
2046 unsigned int node2Col;
2047 unsigned int distance;
2048 double probability, random, percentage;
2049 unsigned int smallWorldConnections;
2050 unsigned int small_world_it;
2052 int connect_attempts;
2053 square = floor (sqrt (pg->total));
2057 percentage = 0.5; /* FIXME: default percentage? */
2058 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2062 if (sscanf (p_string, "%lf", &percentage) != 1)
2064 GNUNET_ERROR_TYPE_WARNING,
2066 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2067 p_string, "PERCENTAGE", "TESTING");
2068 GNUNET_free (p_string);
2070 if (percentage < 0.0)
2073 GNUNET_ERROR_TYPE_WARNING,
2075 ("Invalid value `%s' for option `%s' in section `%s': got %f, needed value greater than 0\n"),
2076 "PERCENTAGE", "TESTING", percentage);
2079 probability = 0.5; /* FIXME: default percentage? */
2080 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2084 if (sscanf (p_string, "%lf", &probability) != 1)
2086 GNUNET_ERROR_TYPE_WARNING,
2088 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2089 p_string, "PROBABILITY", "TESTING");
2090 GNUNET_free (p_string);
2092 if (square * square != pg->total)
2094 while (rows * cols < pg->total)
2096 if (toggle % 2 == 0)
2105 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2107 ("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
2111 connect_attempts = 0;
2112 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
2113 * to the node to its right and above. Once this is over, we'll have our torus!
2114 * Special case for the last node (if the rows and columns are not equal), connect
2115 * to the first in the row to maintain topology.
2117 for (i = 0; i < pg->total; i++)
2119 /* First connect to the node to the right */
2120 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
2121 nodeToConnect = i + 1;
2122 else if (i + 1 == pg->total)
2123 nodeToConnect = rows * cols - cols;
2125 nodeToConnect = i - cols + 1;
2127 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2131 nodeToConnect = (rows * cols) - cols + i;
2132 if (nodeToConnect >= pg->total)
2133 nodeToConnect -= cols;
2136 nodeToConnect = i - cols;
2138 if (nodeToConnect < pg->total)
2139 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2141 natLog = log (pg->total);
2142 #if VERBOSE_TESTING > 2
2143 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2144 _("natural log of %d is %d, will run %d iterations\n"),
2145 pg->total, natLog, (int) (natLog * percentage));
2146 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2147 _("Total connections added thus far: %u!\n"), connect_attempts);
2149 smallWorldConnections = 0;
2150 small_world_it = (unsigned int) (natLog * percentage);
2151 if (small_world_it < 1)
2153 GNUNET_assert (small_world_it > 0 && small_world_it < (unsigned int) -1);
2154 for (i = 0; i < small_world_it; i++)
2156 for (j = 0; j < pg->total; j++)
2158 /* Determine the row and column of node at position j on the 2d torus */
2159 node1Row = j / cols;
2160 node1Col = j - (node1Row * cols);
2161 for (k = 0; k < pg->total; k++)
2163 /* Determine the row and column of node at position k on the 2d torus */
2164 node2Row = k / cols;
2165 node2Col = k - (node2Row * cols);
2166 /* Simple Cartesian distance */
2167 distance = abs (node1Row - node2Row) + abs (node1Col - node2Col);
2170 /* Calculate probability as 1 over the square of the distance */
2171 probability = 1.0 / (distance * distance);
2172 /* Choose a random value between 0 and 1 */
2174 = ((double) GNUNET_CRYPTO_random_u64 (
2175 GNUNET_CRYPTO_QUALITY_WEAK,
2177 / ((double) UINT64_MAX);
2178 /* If random < probability, then connect the two nodes */
2179 if (random < probability)
2180 smallWorldConnections += proc (pg, j, k, list, GNUNET_YES);
2186 connect_attempts += smallWorldConnections;
2187 #if VERBOSE_TESTING > 2
2188 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2189 _("Total connections added for small world: %d!\n"),
2190 smallWorldConnections);
2192 return connect_attempts;
2196 * Create a topology given a peer group (set of running peers)
2197 * and a connection processor.
2199 * @param pg the peergroup to create the topology on
2200 * @param proc the connection processor to call to actually set
2201 * up connections between two peers
2202 * @param list the peer list to use
2204 * @return the number of connections that were set up
2208 create_erdos_renyi(struct GNUNET_TESTING_PeerGroup *pg,
2209 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2212 unsigned int outer_count;
2213 unsigned int inner_count;
2214 int connect_attempts;
2218 probability = 0.5; /* FIXME: default percentage? */
2219 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "TESTING",
2223 if (sscanf (p_string, "%lf", &probability) != 1)
2225 GNUNET_ERROR_TYPE_WARNING,
2227 ("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
2228 p_string, "PROBABILITY", "TESTING");
2229 GNUNET_free (p_string);
2231 connect_attempts = 0;
2232 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
2234 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
2237 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
2239 / ((double) UINT64_MAX);
2241 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2242 _("rand is %f probability is %f\n"), temp_rand,
2245 if (temp_rand < probability)
2247 connect_attempts += proc (pg, outer_count, inner_count, list,
2253 return connect_attempts;
2257 * Create a topology given a peer group (set of running peers)
2258 * and a connection processor. This particular function creates
2259 * the connections for a 2d-torus, plus additional "closest"
2260 * connections per peer.
2262 * @param pg the peergroup to create the topology on
2263 * @param proc the connection processor to call to actually set
2264 * up connections between two peers
2265 * @param list the peer list to use
2267 * @return the number of connections that were set up
2271 create_2d_torus(struct GNUNET_TESTING_PeerGroup *pg,
2272 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2275 unsigned int square;
2278 unsigned int toggle = 1;
2279 unsigned int nodeToConnect;
2280 int connect_attempts;
2282 connect_attempts = 0;
2284 square = floor (sqrt (pg->total));
2288 if (square * square != pg->total)
2290 while (rows * cols < pg->total)
2292 if (toggle % 2 == 0)
2301 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2303 ("Connecting nodes in 2d torus topology: %u rows %u columns\n"),
2306 /* Rows and columns are all sorted out, now iterate over all nodes and connect each
2307 * to the node to its right and above. Once this is over, we'll have our torus!
2308 * Special case for the last node (if the rows and columns are not equal), connect
2309 * to the first in the row to maintain topology.
2311 for (i = 0; i < pg->total; i++)
2313 /* First connect to the node to the right */
2314 if (((i + 1) % cols != 0) && (i + 1 != pg->total))
2315 nodeToConnect = i + 1;
2316 else if (i + 1 == pg->total)
2317 nodeToConnect = rows * cols - cols;
2319 nodeToConnect = i - cols + 1;
2321 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2322 "Connecting peer %d to peer %d\n", i, nodeToConnect);
2324 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2326 /* Second connect to the node immediately above */
2329 nodeToConnect = (rows * cols) - cols + i;
2330 if (nodeToConnect >= pg->total)
2331 nodeToConnect -= cols;
2334 nodeToConnect = i - cols;
2336 if (nodeToConnect < pg->total)
2339 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2340 "Connecting peer %d to peer %d\n", i, nodeToConnect);
2342 connect_attempts += proc (pg, i, nodeToConnect, list, GNUNET_YES);
2347 return connect_attempts;
2351 * Create a topology given a peer group (set of running peers)
2352 * and a connection processor.
2354 * @param pg the peergroup to create the topology on
2355 * @param proc the connection processor to call to actually set
2356 * up connections between two peers
2357 * @param list the peer list to use
2358 * @param check does the connection processor need to check before
2359 * performing an action on the list?
2361 * @return the number of connections that were set up
2365 create_clique(struct GNUNET_TESTING_PeerGroup *pg,
2366 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list,
2369 unsigned int outer_count;
2370 unsigned int inner_count;
2371 int connect_attempts;
2372 struct ProgressMeter *conn_meter;
2373 connect_attempts = 0;
2375 conn_meter = create_meter ((((pg->total * pg->total) + pg->total) / 2)
2376 - pg->total, "Create Clique ", GNUNET_NO);
2377 for (outer_count = 0; outer_count < pg->total - 1; outer_count++)
2379 for (inner_count = outer_count + 1; inner_count < pg->total; inner_count++)
2382 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2383 "Connecting peer %d to peer %d\n",
2384 outer_count, inner_count);
2386 connect_attempts += proc (pg, outer_count, inner_count, list, check);
2387 update_meter (conn_meter);
2390 reset_meter (conn_meter);
2391 free_meter (conn_meter);
2392 return connect_attempts;
2397 * Iterator over hash map entries.
2399 * @param cls closure the peer group
2400 * @param key the key stored in the hashmap is the
2401 * index of the peer to connect to
2402 * @param value value in the hash map, handle to the peer daemon
2403 * @return GNUNET_YES if we should continue to
2408 unblacklist_iterator (void *cls,
2409 const GNUNET_HashCode * key,
2412 struct UnblacklistContext *un_ctx = cls;
2413 uint32_t second_pos;
2415 uid_from_hash (key, &second_pos);
2417 unblacklist_connections(un_ctx->pg, un_ctx->first_uid, second_pos);
2424 * Create a blacklist topology based on the allowed topology
2425 * which disallows any connections not in the allowed topology
2426 * at the transport level.
2428 * @param pg the peergroup to create the topology on
2429 * @param proc the connection processor to call to allow
2430 * up connections between two peers
2432 * @return the number of connections that were set up
2436 copy_allowed(struct GNUNET_TESTING_PeerGroup *pg,
2437 GNUNET_TESTING_ConnectionProcessor proc)
2441 struct PeerConnection *iter;
2443 struct UnblacklistContext un_ctx;
2448 for (count = 0; count < pg->total - 1; count++)
2451 iter = pg->peers[count].allowed_peers_head;
2452 while (iter != NULL)
2454 remove_connections (pg, count, iter->index, BLACKLIST, GNUNET_YES);
2455 //unblacklist_connections(pg, count, iter->index);
2459 un_ctx.first_uid = count;
2460 total += GNUNET_CONTAINER_multihashmap_iterate(pg->peers[count].allowed_peers,
2461 &unblacklist_iterator,
2465 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2466 "Unblacklisted %u peers\n",
2472 * Create a topology given a peer group (set of running peers)
2473 * and a connection processor.
2475 * @param pg the peergroup to create the topology on
2476 * @param proc the connection processor to call to actually set
2477 * up connections between two peers
2478 * @param list which list should be modified
2480 * @return the number of connections that were set up
2484 create_line(struct GNUNET_TESTING_PeerGroup *pg,
2485 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2488 unsigned int connect_attempts;
2490 connect_attempts = 0;
2491 /* Connect each peer to the next highest numbered peer */
2492 for (count = 0; count < pg->total - 1; count++)
2495 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2496 "Connecting peer %d to peer %d\n",
2499 connect_attempts += proc (pg, count, count + 1, list, GNUNET_YES);
2502 return connect_attempts;
2506 * Create a topology given a peer group (set of running peers)
2507 * and a connection processor.
2509 * @param pg the peergroup to create the topology on
2510 * @param filename the file to read topology information from
2511 * @param proc the connection processor to call to actually set
2512 * up connections between two peers
2513 * @param list the peer list to use
2515 * @return the number of connections that were set up
2519 create_from_file(struct GNUNET_TESTING_PeerGroup *pg, char *filename,
2520 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2522 int connect_attempts;
2523 unsigned int first_peer_index;
2524 unsigned int second_peer_index;
2529 unsigned int total_peers;
2530 enum States curr_state;
2532 connect_attempts = 0;
2533 if (GNUNET_OK != GNUNET_DISK_file_test (filename))
2534 GNUNET_DISK_fn_write (filename, NULL, 0, GNUNET_DISK_PERM_USER_READ);
2536 if ((0 != STAT (filename, &frstat)) || (frstat.st_size == 0))
2538 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2539 "Could not open file `%s' specified for topology!", filename);
2540 return connect_attempts;
2543 data = GNUNET_malloc_large (frstat.st_size);
2544 GNUNET_assert(data != NULL);
2545 if (frstat.st_size != GNUNET_DISK_fn_read (filename, data, frstat.st_size))
2548 GNUNET_ERROR_TYPE_ERROR,
2549 "Could not read file %s specified for host list, ending test!",
2552 return connect_attempts;
2557 first_peer_index = 0;
2558 /* First line should contain a single integer, specifying the number of peers */
2559 /* Each subsequent line should contain this format PEER_INDEX:OTHER_PEER_INDEX[,...] */
2560 curr_state = NUM_PEERS;
2561 while (count < frstat.st_size - 1)
2563 if ((buf[count] == '\n') || (buf[count] == ' '))
2573 total_peers = strtoul(&buf[count], NULL, 10);
2576 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2577 "Failed to read number of peers from topology file!\n");
2579 return connect_attempts;
2581 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2582 "Read %u total peers in topology\n", total_peers);
2583 GNUNET_assert(total_peers == pg->total);
2584 curr_state = PEER_INDEX;
2585 while ((buf[count] != '\n') && (count < frstat.st_size - 1))
2591 first_peer_index = strtoul(&buf[count], NULL, 10);
2594 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2595 "Failed to read peer index from topology file!\n");
2597 return connect_attempts;
2599 while ((buf[count] != ':') && (count < frstat.st_size - 1))
2602 curr_state = OTHER_PEER_INDEX;
2605 if (1 == sscanf (&buf[count], ":"))
2606 curr_state = OTHER_PEER_INDEX;
2609 case OTHER_PEER_INDEX:
2611 second_peer_index = strtoul(&buf[count], NULL, 10);
2614 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2615 "Failed to peer index from topology file!\n");
2617 return connect_attempts;
2619 /* Assume file is written with first peer 1, but array index is 0 */
2620 connect_attempts += proc (pg, first_peer_index - 1, second_peer_index
2621 - 1, list, GNUNET_YES);
2622 while ((buf[count] != '\n') && (buf[count] != ',') && (count
2623 < frstat.st_size - 1))
2625 if (buf[count] == '\n')
2627 curr_state = PEER_INDEX;
2629 else if (buf[count] != ',')
2631 curr_state = OTHER_PEER_INDEX;
2636 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2637 "Found bad data in topology file while in state %d!\n",
2641 return connect_attempts;
2645 return connect_attempts;
2649 * Create a topology given a peer group (set of running peers)
2650 * and a connection processor.
2652 * @param pg the peergroup to create the topology on
2653 * @param proc the connection processor to call to actually set
2654 * up connections between two peers
2655 * @param list the peer list to use
2657 * @return the number of connections that were set up
2661 create_ring(struct GNUNET_TESTING_PeerGroup *pg,
2662 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
2665 int connect_attempts;
2667 connect_attempts = 0;
2669 /* Connect each peer to the next highest numbered peer */
2670 for (count = 0; count < pg->total - 1; count++)
2673 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2674 "Connecting peer %d to peer %d\n", count, count + 1);
2676 connect_attempts += proc (pg, count, count + 1, list, GNUNET_YES);
2679 /* Connect the last peer to the first peer */
2680 connect_attempts += proc (pg, pg->total - 1, 0, list, GNUNET_YES);
2682 return connect_attempts;
2687 * Iterator for writing friends of a peer to a file.
2689 * @param cls closure, an open writable file handle
2690 * @param key the key the daemon was stored under
2691 * @param value the GNUNET_TESTING_Daemon that needs to be written.
2693 * @return GNUNET_YES to continue iteration
2695 * TODO: Could replace friend_file_iterator and blacklist_file_iterator
2696 * with a single file_iterator that takes a closure which contains
2697 * the prefix to write before the peer. Then this could be used
2698 * for blacklisting multiple transports and writing the friend
2699 * file. I'm sure *someone* will complain loudly about other
2700 * things that negate these functions even existing so no point in
2704 friend_file_iterator (void *cls, const GNUNET_HashCode * key, void *value)
2706 FILE *temp_friend_handle = cls;
2707 struct GNUNET_TESTING_Daemon *peer = value;
2708 struct GNUNET_PeerIdentity *temppeer;
2709 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2711 temppeer = &peer->id;
2712 GNUNET_CRYPTO_hash_to_enc (&temppeer->hashPubKey, &peer_enc);
2713 fprintf (temp_friend_handle, "%s\n", (char *) &peer_enc);
2718 struct BlacklistContext
2721 * The (open) file handle to write to
2723 FILE *temp_file_handle;
2726 * The transport that this peer will be blacklisted on.
2732 * Iterator for writing blacklist data to appropriate files.
2734 * @param cls closure, an open writable file handle
2735 * @param key the key the daemon was stored under
2736 * @param value the GNUNET_TESTING_Daemon that needs to be written.
2738 * @return GNUNET_YES to continue iteration
2741 blacklist_file_iterator (void *cls, const GNUNET_HashCode * key, void *value)
2743 struct BlacklistContext *blacklist_ctx = cls;
2744 struct GNUNET_TESTING_Daemon *peer = value;
2745 struct GNUNET_PeerIdentity *temppeer;
2746 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2748 temppeer = &peer->id;
2749 GNUNET_CRYPTO_hash_to_enc (&temppeer->hashPubKey, &peer_enc);
2750 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Writing entry %s:%s to file\n", blacklist_ctx->transport, (char *) &peer_enc);
2751 fprintf (blacklist_ctx->temp_file_handle, "%s:%s\n",
2752 blacklist_ctx->transport, (char *) &peer_enc);
2759 * Create the friend files based on the PeerConnection's
2760 * of each peer in the peer group, and copy the files
2761 * to the appropriate place
2763 * @param pg the peer group we are dealing with
2766 create_and_copy_friend_files(struct GNUNET_TESTING_PeerGroup *pg)
2768 FILE *temp_friend_handle;
2769 unsigned int pg_iter;
2770 char *temp_service_path;
2771 struct GNUNET_OS_Process **procarr;
2775 enum GNUNET_OS_ProcessStatusType type;
2776 unsigned long return_code;
2784 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2785 struct PeerConnection *conn_iter;
2787 procarr = GNUNET_malloc (sizeof (struct GNUNET_OS_Process *) * pg->total);
2788 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2790 mytemp = GNUNET_DISK_mktemp ("friends");
2791 GNUNET_assert (mytemp != NULL);
2792 temp_friend_handle = fopen (mytemp, "wt");
2793 GNUNET_assert (temp_friend_handle != NULL);
2795 conn_iter = pg->peers[pg_iter].allowed_peers_head;
2796 while (conn_iter != NULL)
2798 GNUNET_CRYPTO_hash_to_enc (
2799 &pg->peers[conn_iter->index].daemon->id.hashPubKey,
2801 fprintf (temp_friend_handle, "%s\n", (char *) &peer_enc);
2802 conn_iter = conn_iter->next;
2805 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].allowed_peers,
2806 &friend_file_iterator,
2807 temp_friend_handle);
2809 fclose (temp_friend_handle);
2812 != GNUNET_CONFIGURATION_get_value_string (
2813 pg->peers[pg_iter]. daemon->cfg,
2814 "PATHS", "SERVICEHOME",
2815 &temp_service_path))
2818 GNUNET_ERROR_TYPE_WARNING,
2820 ("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
2821 "SERVICEHOME", "PATHS");
2822 if (UNLINK (mytemp) != 0)
2823 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink",
2825 GNUNET_free (mytemp);
2829 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
2831 GNUNET_asprintf (&arg, "%s/friends", temp_service_path);
2832 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv", "mv",
2834 GNUNET_assert(procarr[pg_iter] != NULL);
2836 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2837 _("Copying file with command cp %s %s\n"), mytemp, arg);
2839 ret = GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: schedule this, throttle! */
2840 GNUNET_OS_process_close (procarr[pg_iter]);
2843 else /* Remote, scp the file to the correct place */
2845 if (NULL != pg->peers[pg_iter].daemon->username)
2846 GNUNET_asprintf (&arg, "%s@%s:%s/friends",
2847 pg->peers[pg_iter].daemon->username,
2848 pg->peers[pg_iter].daemon->hostname,
2851 GNUNET_asprintf (&arg, "%s:%s/friends",
2852 pg->peers[pg_iter].daemon->hostname,
2854 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp", "scp",
2856 GNUNET_assert(procarr[pg_iter] != NULL);
2857 ret = GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: schedule this, throttle! */
2858 GNUNET_OS_process_close (procarr[pg_iter]);
2859 if (ret != GNUNET_OK)
2861 procarr[pg_iter] = NULL;
2863 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2864 _("Copying file with command scp %s %s\n"), mytemp,
2869 GNUNET_free (temp_service_path);
2870 GNUNET_free (mytemp);
2875 ret = GNUNET_SYSERR;
2876 while ((count < max_wait) && (ret != GNUNET_OK))
2879 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2882 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2883 _("Checking copy status of file %d\n"), pg_iter);
2885 if (procarr[pg_iter] != NULL) /* Check for already completed! */
2887 if (GNUNET_OS_process_status
2888 (procarr[pg_iter], &type, &return_code) != GNUNET_OK)
2890 ret = GNUNET_SYSERR;
2892 else if ((type != GNUNET_OS_PROCESS_EXITED)
2893 || (return_code != 0))
2895 ret = GNUNET_SYSERR;
2899 GNUNET_OS_process_close (procarr[pg_iter]);
2900 procarr[pg_iter] = NULL;
2902 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2903 _("File %d copied\n"), pg_iter);
2909 if (ret == GNUNET_SYSERR)
2911 /* FIXME: why sleep here? -CG */
2917 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2918 _("Finished copying all friend files!\n"));
2921 GNUNET_free (procarr);
2926 * Create the blacklist files based on the PeerConnection's
2927 * of each peer in the peer group, and copy the files
2928 * to the appropriate place.
2930 * @param pg the peer group we are dealing with
2931 * @param transports space delimited list of transports to blacklist
2934 create_and_copy_blacklist_files(struct GNUNET_TESTING_PeerGroup *pg,
2935 const char *transports)
2937 FILE *temp_file_handle;
2938 unsigned int pg_iter;
2939 char *temp_service_path;
2940 struct GNUNET_OS_Process **procarr;
2943 enum GNUNET_OS_ProcessStatusType type;
2944 unsigned long return_code;
2951 char *temp_transports;
2954 struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
2955 struct PeerConnection *conn_iter;
2957 static struct BlacklistContext blacklist_ctx;
2960 procarr = GNUNET_malloc (sizeof (struct GNUNET_OS_Process *) * pg->total);
2961 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
2963 mytemp = GNUNET_DISK_mktemp ("blacklist");
2964 GNUNET_assert (mytemp != NULL);
2965 temp_file_handle = fopen (mytemp, "wt");
2966 GNUNET_assert (temp_file_handle != NULL);
2967 temp_transports = GNUNET_strdup (transports);
2969 blacklist_ctx.temp_file_handle = temp_file_handle;
2971 transport_len = strlen (temp_transports) + 1;
2974 for (i = 0; i < transport_len; i++)
2976 if ((temp_transports[i] == ' ') && (pos == NULL))
2977 continue; /* At start of string (whitespace) */
2978 else if ((temp_transports[i] == ' ') || (temp_transports[i] == '\0')) /* At end of string */
2980 temp_transports[i] = '\0';
2982 conn_iter = pg->peers[pg_iter].blacklisted_peers_head;
2983 while (conn_iter != NULL)
2985 GNUNET_CRYPTO_hash_to_enc (
2986 &pg->peers[conn_iter->index].daemon->id.hashPubKey,
2988 fprintf (temp_file_handle, "%s:%s\n", pos, (char *) &peer_enc);
2989 conn_iter = conn_iter->next;
2993 blacklist_ctx.transport = pos;
2994 entry_count = GNUNET_CONTAINER_multihashmap_iterate (pg->
2996 [pg_iter].blacklisted_peers,
2997 &blacklist_file_iterator,
3001 } /* At beginning of actual string */
3002 else if (pos == NULL)
3004 pos = &temp_transports[i];
3008 GNUNET_free (temp_transports);
3009 fclose (temp_file_handle);
3012 != GNUNET_CONFIGURATION_get_value_string (
3013 pg->peers[pg_iter]. daemon->cfg,
3014 "PATHS", "SERVICEHOME",
3015 &temp_service_path))
3018 GNUNET_ERROR_TYPE_WARNING,
3020 ("No `%s' specified in peer configuration in section `%s', cannot copy friends file!\n"),
3021 "SERVICEHOME", "PATHS");
3022 if (UNLINK (mytemp) != 0)
3023 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_WARNING, "unlink",
3025 GNUNET_free (mytemp);
3029 if (pg->peers[pg_iter].daemon->hostname == NULL) /* Local, just copy the file */
3031 GNUNET_asprintf (&arg, "%s/blacklist", temp_service_path);
3032 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "mv", "mv",
3035 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3036 _("Copying file with command cp %s %s\n"), mytemp, arg);
3041 else /* Remote, scp the file to the correct place */
3043 if (NULL != pg->peers[pg_iter].daemon->username)
3044 GNUNET_asprintf (&arg, "%s@%s:%s/blacklist",
3045 pg->peers[pg_iter].daemon->username,
3046 pg->peers[pg_iter].daemon->hostname,
3049 GNUNET_asprintf (&arg, "%s:%s/blacklist",
3050 pg->peers[pg_iter].daemon->hostname,
3052 procarr[pg_iter] = GNUNET_OS_start_process (NULL, NULL, "scp", "scp",
3054 GNUNET_assert(procarr[pg_iter] != NULL);
3055 GNUNET_OS_process_wait (procarr[pg_iter]); /* FIXME: add scheduled blacklist file copy that parallelizes file copying! */
3058 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3059 _("Copying file with command scp %s %s\n"), mytemp,
3064 GNUNET_free (temp_service_path);
3065 GNUNET_free (mytemp);
3069 ret = GNUNET_SYSERR;
3070 while ((count < max_wait) && (ret != GNUNET_OK))
3073 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3076 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3077 _("Checking copy status of file %d\n"), pg_iter);
3079 if (procarr[pg_iter] != NULL) /* Check for already completed! */
3081 if (GNUNET_OS_process_status (procarr[pg_iter], &type,
3082 &return_code) != GNUNET_OK)
3084 ret = GNUNET_SYSERR;
3086 else if ((type != GNUNET_OS_PROCESS_EXITED) || (return_code != 0))
3088 ret = GNUNET_SYSERR;
3092 GNUNET_OS_process_close (procarr[pg_iter]);
3093 procarr[pg_iter] = NULL;
3095 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3096 _("File %d copied\n"), pg_iter);
3102 if (ret == GNUNET_SYSERR)
3104 /* FIXME: why sleep here? -CG */
3110 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3111 _("Finished copying all blacklist files!\n"));
3113 GNUNET_free (procarr);
3117 /* Forward Declaration */
3119 schedule_connect(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
3122 * Choose a random peer's next connection to create, and
3123 * call schedule_connect to set up the connect task.
3125 * @param ct_ctx the overall connection context
3128 preschedule_connect(struct GNUNET_TESTING_PeerGroup *pg)
3130 struct ConnectTopologyContext *ct_ctx = &pg->ct_ctx;
3131 struct PeerConnection *connection_iter;
3132 struct ConnectContext *connect_context;
3133 uint32_t random_peer;
3135 if (ct_ctx->remaining_connections == 0)
3138 = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, pg->total);
3139 while (pg->peers[random_peer].connect_peers_head == NULL)
3140 random_peer = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
3143 connection_iter = pg->peers[random_peer].connect_peers_head;
3144 connect_context = GNUNET_malloc (sizeof (struct ConnectContext));
3145 connect_context->first_index = random_peer;
3146 connect_context->second_index = connection_iter->index;
3147 connect_context->ct_ctx = ct_ctx;
3148 GNUNET_SCHEDULER_add_now (&schedule_connect, connect_context);
3149 GNUNET_CONTAINER_DLL_remove(pg->peers[random_peer].connect_peers_head, pg->peers[random_peer].connect_peers_tail, connection_iter);
3150 GNUNET_free(connection_iter);
3151 ct_ctx->remaining_connections--;
3155 /* Forward declaration */
3156 static void schedule_send_hellos (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
3159 * Close connections and free the hello context.
3161 * @param cls the 'struct SendHelloContext *'
3162 * @param tc scheduler context
3165 free_hello_context (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3167 struct SendHelloContext *send_hello_context = cls;
3168 if (send_hello_context->peer->daemon->server != NULL)
3170 GNUNET_CORE_disconnect(send_hello_context->peer->daemon->server);
3171 send_hello_context->peer->daemon->server = NULL;
3173 if (send_hello_context->peer->daemon->th != NULL)
3175 GNUNET_TRANSPORT_disconnect(send_hello_context->peer->daemon->th);
3176 send_hello_context->peer->daemon->th = NULL;
3178 if (send_hello_context->core_connect_task != GNUNET_SCHEDULER_NO_TASK)
3180 GNUNET_SCHEDULER_cancel(send_hello_context->core_connect_task);
3181 send_hello_context->core_connect_task = GNUNET_SCHEDULER_NO_TASK;
3183 send_hello_context->pg->outstanding_connects--;
3184 GNUNET_free(send_hello_context);
3188 * For peers that haven't yet connected, notify
3189 * the caller that they have failed (timeout).
3191 * @param cls the 'struct SendHelloContext *'
3192 * @param tc scheduler context
3195 notify_remaining_connections_failed (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3197 struct SendHelloContext *send_hello_context = cls;
3198 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3199 struct PeerConnection *connection;
3201 GNUNET_CORE_disconnect(send_hello_context->peer->daemon->server);
3202 send_hello_context->peer->daemon->server = NULL;
3204 connection = send_hello_context->peer->connect_peers_head;
3206 while (connection != NULL)
3208 if (pg->notify_connection != NULL)
3210 pg->notify_connection(pg->notify_connection_cls,
3211 &send_hello_context->peer->daemon->id,
3212 &pg->peers[connection->index].daemon->id,
3214 send_hello_context->peer->daemon->cfg,
3215 pg->peers[connection->index].daemon->cfg,
3216 send_hello_context->peer->daemon,
3217 pg->peers[connection->index].daemon,
3218 "Peers failed to connect (timeout)");
3220 GNUNET_CONTAINER_DLL_remove(send_hello_context->peer->connect_peers_head, send_hello_context->peer->connect_peers_tail, connection);
3221 GNUNET_free(connection);
3222 connection = connection->next;
3224 GNUNET_SCHEDULER_add_now(&free_hello_context, send_hello_context);
3226 other_peer = &pg->peers[connection->index];
3231 * For peers that haven't yet connected, send
3232 * CORE connect requests.
3234 * @param cls the 'struct SendHelloContext *'
3235 * @param tc scheduler context
3238 send_core_connect_requests (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3240 struct SendHelloContext *send_hello_context = cls;
3241 struct PeerConnection *conn;
3242 GNUNET_assert(send_hello_context->peer->daemon->server != NULL);
3244 send_hello_context->core_connect_task = GNUNET_SCHEDULER_NO_TASK;
3246 send_hello_context->connect_attempts++;
3247 if (send_hello_context->connect_attempts < send_hello_context->pg->ct_ctx.connect_attempts)
3249 conn = send_hello_context->peer->connect_peers_head;
3250 while (conn != NULL)
3252 GNUNET_CORE_peer_request_connect(send_hello_context->peer->daemon->server,
3253 &send_hello_context->pg->peers[conn->index].daemon->id,
3258 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) ,
3259 &send_core_connect_requests,
3260 send_hello_context);
3264 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Timeout before all connections created, marking rest as failed!\n");
3265 GNUNET_SCHEDULER_add_now(¬ify_remaining_connections_failed, send_hello_context);
3271 * Success, connection is up. Signal client our success.
3273 * @param cls our "struct SendHelloContext"
3274 * @param peer identity of the peer that has connected
3275 * @param atsi performance information
3277 * FIXME: remove peers from BOTH lists, call notify twice, should
3278 * double the speed of connections as long as the list iteration
3279 * doesn't take too long!
3282 core_connect_notify (void *cls,
3283 const struct GNUNET_PeerIdentity *peer,
3284 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
3286 struct SendHelloContext *send_hello_context = cls;
3287 struct PeerConnection *connection;
3288 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3290 struct PeerData *other_peer;
3293 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3294 "Connected peer %s to peer %s\n",
3295 ctx->d1->shortname, GNUNET_i2s(peer));
3298 if (0 == memcmp(&send_hello_context->peer->daemon->id, peer, sizeof(struct GNUNET_PeerIdentity)))
3301 connection = send_hello_context->peer->connect_peers_head;
3306 while ((connection != NULL) &&
3307 (0 != memcmp(&pg->peers[connection->index].daemon->id, peer, sizeof(struct GNUNET_PeerIdentity))))
3309 connection = connection->next;
3312 if (connection == NULL)
3314 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);
3319 other_peer = &pg->peers[connection->index];
3321 if (pg->notify_connection != NULL)
3323 pg->notify_connection(pg->notify_connection_cls,
3324 &send_hello_context->peer->daemon->id,
3327 send_hello_context->peer->daemon->cfg,
3328 pg->peers[connection->index].daemon->cfg,
3329 send_hello_context->peer->daemon,
3330 pg->peers[connection->index].daemon,
3333 GNUNET_CONTAINER_DLL_remove(send_hello_context->peer->connect_peers_head, send_hello_context->peer->connect_peers_tail, connection);
3334 GNUNET_free(connection);
3338 /* Notify of reverse connection and remove from other peers list of outstanding */
3339 if (other_peer != NULL)
3341 connection = other_peer->connect_peers_head;
3342 while ((connection != NULL) &&
3343 (0 != memcmp(&send_hello_context->peer->daemon->id, &pg->peers[connection->index].daemon->id, sizeof(struct GNUNET_PeerIdentity))))
3345 connection = connection->next;
3347 if (connection != NULL)
3349 if (pg->notify_connection != NULL)
3351 pg->notify_connection(pg->notify_connection_cls,
3353 &send_hello_context->peer->daemon->id,
3355 pg->peers[connection->index].daemon->cfg,
3356 send_hello_context->peer->daemon->cfg,
3357 pg->peers[connection->index].daemon,
3358 send_hello_context->peer->daemon,
3362 GNUNET_CONTAINER_DLL_remove(other_peer->connect_peers_head, other_peer->connect_peers_tail, connection);
3363 GNUNET_free(connection);
3368 if (send_hello_context->peer->connect_peers_head == NULL)
3370 GNUNET_SCHEDULER_add_now(&free_hello_context, send_hello_context);
3375 * Notify of a successful connection to the core service.
3377 * @param cls a struct SendHelloContext *
3378 * @param server handle to the core service
3379 * @param my_identity the peer identity of this peer
3380 * @param publicKey the public key of the peer
3383 core_init (void *cls,
3384 struct GNUNET_CORE_Handle * server,
3385 const struct GNUNET_PeerIdentity *
3388 GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *
3391 struct SendHelloContext *send_hello_context = cls;
3392 send_hello_context->core_ready = GNUNET_YES;
3396 * Function called once a hello has been sent
3397 * to the transport, move on to the next one
3398 * or go away forever.
3400 * @param cls the 'struct SendHelloContext *'
3401 * @param tc scheduler context
3404 hello_sent_callback (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3406 struct SendHelloContext *send_hello_context = cls;
3407 //unsigned int pg_iter;
3408 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
3410 GNUNET_free(send_hello_context);
3414 send_hello_context->pg->remaining_hellos--;
3416 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Sent HELLO, have %d remaining!\n", send_hello_context->pg->remaining_hellos);
3418 if (send_hello_context->peer_pos == NULL) /* All HELLOs (for this peer!) have been transmitted! */
3421 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "All hellos for this peer sent, disconnecting transport!\n");
3423 GNUNET_assert(send_hello_context->peer->daemon->th != NULL);
3424 GNUNET_TRANSPORT_disconnect(send_hello_context->peer->daemon->th);
3425 send_hello_context->peer->daemon->th = NULL;
3427 /*if (send_hello_context->pg->remaining_hellos == 0)
3429 for (pg_iter = 0; pg_iter < send_hello_context->pg->max_outstanding_connections; pg_iter++)
3431 preschedule_connect(&send_hello_context->pg->ct_ctx);
3435 GNUNET_assert (send_hello_context->peer->daemon->server == NULL);
3436 send_hello_context->peer->daemon->server = GNUNET_CORE_connect(send_hello_context->peer->cfg,
3440 &core_connect_notify,
3447 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),
3448 &send_core_connect_requests,
3449 send_hello_context);
3452 GNUNET_SCHEDULER_add_now(&schedule_send_hellos, send_hello_context);
3456 * Connect to a peer, give it all the HELLO's of those peers
3457 * we will later ask it to connect to.
3459 * @param ct_ctx the overall connection context
3461 static void schedule_send_hellos (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3463 struct SendHelloContext *send_hello_context = cls;
3464 struct GNUNET_TESTING_PeerGroup *pg = send_hello_context->pg;
3466 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
3468 GNUNET_free(send_hello_context);
3472 GNUNET_assert(send_hello_context->peer_pos != NULL); /* All of the HELLO sends to be scheduled have been scheduled! */
3474 if (((send_hello_context->peer->daemon->th == NULL) &&
3475 (pg->outstanding_connects > pg->max_outstanding_connections)) ||
3476 (pg->stop_connects == GNUNET_YES))
3478 #if VERBOSE_TESTING > 2
3479 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3481 ("Delaying connect, we have too many outstanding connections!\n"));
3483 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
3484 (GNUNET_TIME_UNIT_MILLISECONDS, 100),
3485 &schedule_send_hellos, send_hello_context);
3489 #if VERBOSE_TESTING > 2
3490 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3491 _("Creating connection, outstanding_connections is %d\n"),
3492 outstanding_connects);
3494 if (send_hello_context->peer->daemon->th == NULL)
3496 pg->outstanding_connects++; /* Actual TRANSPORT, CORE connections! */
3497 send_hello_context->peer->daemon->th
3498 = GNUNET_TRANSPORT_connect (send_hello_context->peer->cfg, NULL,
3499 send_hello_context, NULL, NULL, NULL);
3502 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3503 _("Offering Hello of peer %s to peer %s\n"),
3504 send_hello_context->peer->daemon->shortname, pg->peers[send_hello_context->peer_pos->index].daemon->shortname);
3506 GNUNET_TRANSPORT_offer_hello(send_hello_context->peer->daemon->th,
3507 (const struct GNUNET_MessageHeader *)pg->peers[send_hello_context->peer_pos->index].daemon->hello,
3508 &hello_sent_callback,
3509 send_hello_context);
3510 send_hello_context->peer_pos = send_hello_context->peer_pos->next;
3511 GNUNET_assert(send_hello_context->peer->daemon->th != NULL);
3517 * Internal notification of a connection, kept so that we can ensure some connections
3518 * happen instead of flooding all testing daemons with requests to connect.
3521 internal_connect_notify(void *cls, const struct GNUNET_PeerIdentity *first,
3522 const struct GNUNET_PeerIdentity *second,
3524 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
3525 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
3526 struct GNUNET_TESTING_Daemon *first_daemon,
3527 struct GNUNET_TESTING_Daemon *second_daemon,
3530 struct ConnectContext *connect_ctx = cls;
3531 struct ConnectTopologyContext *ct_ctx = connect_ctx->ct_ctx;
3532 struct GNUNET_TESTING_PeerGroup *pg = ct_ctx->pg;
3533 struct PeerConnection *connection;
3535 GNUNET_assert (0 < pg->outstanding_connects);
3536 pg->outstanding_connects--;
3539 * Check whether the inverse connection has been scheduled yet,
3540 * if not, we can remove it from the other peers list and avoid
3541 * even trying to connect them again!
3543 connection = pg->peers[connect_ctx->second_index].connect_peers_head;
3548 while ((connection != NULL) && (0
3549 != memcmp (first, &pg->peers[connection->index].daemon->id,
3550 sizeof(struct GNUNET_PeerIdentity))))
3552 connection = connection->next;
3555 if (connection != NULL) /* Can safely remove! */
3557 GNUNET_assert (0 < ct_ctx->remaining_connections);
3558 ct_ctx->remaining_connections--;
3559 if (pg->notify_connection != NULL) /* Notify of reverse connection */
3560 pg->notify_connection (pg->notify_connection_cls, second, first,
3561 distance, second_cfg, first_cfg, second_daemon,
3562 first_daemon, emsg);
3564 GNUNET_CONTAINER_DLL_remove(pg->peers[connect_ctx->second_index].connect_peers_head, pg->peers[connect_ctx->second_index].connect_peers_tail, connection);
3565 GNUNET_free(connection);
3568 if (ct_ctx->remaining_connections == 0)
3570 if (ct_ctx->notify_connections_done != NULL)
3572 ct_ctx->notify_connections_done (ct_ctx->notify_cls, NULL);
3573 ct_ctx->notify_connections_done = NULL;
3577 preschedule_connect (pg);
3579 if (pg->notify_connection != NULL)
3580 pg->notify_connection (pg->notify_connection_cls, first, second, distance,
3581 first_cfg, second_cfg, first_daemon, second_daemon,
3584 GNUNET_free(connect_ctx);
3588 * Either delay a connection (because there are too many outstanding)
3589 * or schedule it for right now.
3591 * @param cls a connection context
3592 * @param tc the task runtime context
3595 schedule_connect(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
3597 struct ConnectContext *connect_context = cls;
3598 struct GNUNET_TESTING_PeerGroup *pg = connect_context->ct_ctx->pg;
3600 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
3603 if ((pg->outstanding_connects > pg->max_outstanding_connections)
3604 || (pg->stop_connects == GNUNET_YES))
3607 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3609 ("Delaying connect, we have too many outstanding connections!\n"));
3611 GNUNET_SCHEDULER_add_delayed (
3612 GNUNET_TIME_relative_multiply (
3613 GNUNET_TIME_UNIT_MILLISECONDS,
3615 &schedule_connect, connect_context);
3620 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
3621 _("Creating connection, outstanding_connections is %d (max %d)\n"),
3622 pg->outstanding_connects, pg->max_outstanding_connections);
3624 pg->outstanding_connects++;
3625 pg->total_connects_scheduled++;
3626 GNUNET_TESTING_daemons_connect (
3627 pg->peers[connect_context->first_index].daemon,
3628 pg->peers[connect_context->second_index].daemon,
3629 connect_context->ct_ctx->connect_timeout,
3630 connect_context->ct_ctx->connect_attempts,
3636 &internal_connect_notify, connect_context); /* FIXME: free connect context! */
3642 * Iterator for actually scheduling connections to be created
3643 * between two peers.
3645 * @param cls closure, a GNUNET_TESTING_Daemon
3646 * @param key the key the second Daemon was stored under
3647 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
3649 * @return GNUNET_YES to continue iteration
3652 connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
3654 struct ConnectTopologyContext *ct_ctx = cls;
3655 struct PeerData *first = ct_ctx->first;
3656 struct GNUNET_TESTING_Daemon *second = value;
3657 struct ConnectContext *connect_context;
3659 connect_context = GNUNET_malloc (sizeof (struct ConnectContext));
3660 connect_context->first = first->daemon;
3661 connect_context->second = second;
3662 connect_context->ct_ctx = ct_ctx;
3663 GNUNET_SCHEDULER_add_now (&schedule_connect, connect_context);
3671 * Iterator for copying all entries in the allowed hashmap to the
3674 * @param cls closure, a GNUNET_TESTING_Daemon
3675 * @param key the key the second Daemon was stored under
3676 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
3678 * @return GNUNET_YES to continue iteration
3681 copy_topology_iterator (void *cls, const GNUNET_HashCode * key, void *value)
3683 struct PeerData *first = cls;
3685 GNUNET_assert (GNUNET_OK ==
3686 GNUNET_CONTAINER_multihashmap_put (first->connect_peers, key,
3688 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
3695 * Make the peers to connect the same as those that are allowed to be
3698 * @param pg the peer group
3701 copy_allowed_topology(struct GNUNET_TESTING_PeerGroup *pg)
3703 unsigned int pg_iter;
3707 struct PeerConnection *iter;
3711 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3714 iter = pg->peers[pg_iter].allowed_peers_head;
3715 while (iter != NULL)
3717 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3718 "Creating connection between %d and %d\n", pg_iter,
3720 total += add_connections (pg, pg_iter, iter->index, CONNECT,
3722 //total += add_actual_connections(pg, pg_iter, iter->index);
3727 GNUNET_CONTAINER_multihashmap_iterate (pg->
3728 peers[pg_iter].allowed_peers,
3729 ©_topology_iterator,
3730 &pg->peers[pg_iter]);
3732 if (GNUNET_SYSERR == ret)
3733 return GNUNET_SYSERR;
3735 total = total + ret;
3742 * Connect the topology as specified by the PeerConnection's
3743 * of each peer in the peer group
3745 * @param pg the peer group we are dealing with
3746 * @param connect_timeout how long try connecting two peers
3747 * @param connect_attempts how many times (max) to attempt
3748 * @param notify_callback callback to notify when finished
3749 * @param notify_cls closure for notify callback
3751 * @return the number of connections that will be attempted
3754 connect_topology(struct GNUNET_TESTING_PeerGroup *pg,
3755 struct GNUNET_TIME_Relative connect_timeout,
3756 unsigned int connect_attempts,
3757 GNUNET_TESTING_NotifyCompletion notify_callback,
3760 unsigned int pg_iter;
3764 struct PeerConnection *connection_iter;
3767 struct SendHelloContext *send_hello_context;
3771 pg->ct_ctx.notify_connections_done = notify_callback;
3772 pg->ct_ctx.notify_cls = notify_cls;
3775 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3778 connection_iter = pg->peers[pg_iter].connect_peers_head;
3779 while (connection_iter != NULL)
3781 connection_iter = connection_iter->next;
3786 GNUNET_CONTAINER_multihashmap_size (pg->peers[pg_iter].connect_peers);
3793 pg->ct_ctx.connect_timeout = connect_timeout;
3794 pg->ct_ctx.connect_attempts = connect_attempts;
3795 pg->ct_ctx.remaining_connections = total;
3798 /* First give all peers the HELLO's of other peers (connect to first peer's transport service, give HELLO's of other peers, continue...) */
3799 pg->remaining_hellos = total;
3800 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
3802 send_hello_context = GNUNET_malloc(sizeof(struct SendHelloContext));
3803 send_hello_context->peer = &pg->peers[pg_iter];
3804 send_hello_context->peer_pos = pg->peers[pg_iter].connect_peers_head;
3805 send_hello_context->pg = pg;
3806 GNUNET_SCHEDULER_add_now(&schedule_send_hellos, send_hello_context);
3809 for (pg_iter = 0; pg_iter < pg->max_outstanding_connections; pg_iter++)
3811 preschedule_connect (pg);
3819 * Takes a peer group and creates a topology based on the
3820 * one specified. Creates a topology means generates friend
3821 * files for the peers so they can only connect to those allowed
3822 * by the topology. This will only have an effect once peers
3823 * are started if the FRIENDS_ONLY option is set in the base
3824 * config. Also takes an optional restrict topology which
3825 * disallows connections based on particular transports
3826 * UNLESS they are specified in the restricted topology.
3828 * @param pg the peer group struct representing the running peers
3829 * @param topology which topology to connect the peers in
3830 * @param restrict_topology disallow restrict_transports transport
3831 * connections to peers NOT in this topology
3832 * use GNUNET_TESTING_TOPOLOGY_NONE for no restrictions
3833 * @param restrict_transports space delimited list of transports to blacklist
3834 * to create restricted topology
3836 * @return the maximum number of connections were all allowed peers
3837 * connected to each other
3840 GNUNET_TESTING_create_topology(struct GNUNET_TESTING_PeerGroup *pg,
3841 enum GNUNET_TESTING_Topology topology,
3842 enum GNUNET_TESTING_Topology restrict_topology,
3843 const char *restrict_transports)
3847 unsigned int num_connections;
3848 int unblacklisted_connections;
3850 struct PeerConnection *conn_iter;
3851 struct PeerConnection *temp_conn;
3856 for (i = 0; i < pg->total; i++)
3858 pg->peers[i].allowed_peers =
3859 GNUNET_CONTAINER_multihashmap_create (100);
3860 pg->peers[i].connect_peers =
3861 GNUNET_CONTAINER_multihashmap_create (100);
3862 pg->peers[i].blacklisted_peers =
3863 GNUNET_CONTAINER_multihashmap_create (100);
3864 pg->peers[i].pg = pg;
3870 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
3872 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating clique topology\n"));
3874 num_connections = create_clique (pg, &add_connections, ALLOWED, GNUNET_NO);
3876 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
3878 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3879 _("Creating small world (ring) topology\n"));
3881 num_connections = create_small_world_ring (pg, &add_connections, ALLOWED);
3883 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
3885 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3886 _("Creating small world (2d-torus) topology\n"));
3888 num_connections = create_small_world (pg, &add_connections, ALLOWED);
3890 case GNUNET_TESTING_TOPOLOGY_RING:
3892 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating ring topology\n"));
3894 num_connections = create_ring (pg, &add_connections, ALLOWED);
3896 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
3898 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating 2d torus topology\n"));
3900 num_connections = create_2d_torus (pg, &add_connections, ALLOWED);
3902 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
3904 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3905 _("Creating Erdos-Renyi topology\n"));
3907 num_connections = create_erdos_renyi (pg, &add_connections, ALLOWED);
3909 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
3911 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating InterNAT topology\n"));
3913 num_connections = create_nated_internet (pg, &add_connections, ALLOWED);
3915 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
3917 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3918 _("Creating Scale Free topology\n"));
3920 num_connections = create_scale_free (pg, &add_connections, ALLOWED);
3922 case GNUNET_TESTING_TOPOLOGY_LINE:
3924 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3925 _("Creating straight line topology\n"));
3927 num_connections = create_line (pg, &add_connections, ALLOWED);
3929 case GNUNET_TESTING_TOPOLOGY_FROM_FILE:
3931 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3932 _("Creating topology from file!\n"));
3934 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (pg->cfg, "testing",
3937 num_connections = create_from_file (pg, filename, &add_connections,
3942 GNUNET_ERROR_TYPE_WARNING,
3943 "Missing configuration option TESTING:TOPOLOGY_FILE for creating topology from file!\n");
3944 num_connections = 0;
3947 case GNUNET_TESTING_TOPOLOGY_NONE:
3949 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3951 ("Creating no allowed topology (all peers can connect at core level)\n"));
3953 num_connections = pg->total * pg->total; /* Clique is allowed! */
3956 num_connections = 0;
3960 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "TESTING",
3963 ret = create_and_copy_friend_files (pg);
3964 if (ret != GNUNET_OK)
3967 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3968 _("Failed during friend file copying!\n"));
3970 return GNUNET_SYSERR;
3975 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3976 _("Friend files created/copied successfully!\n"));
3981 /* Use the create clique method to initially set all connections as blacklisted. */
3982 if ((restrict_topology != GNUNET_TESTING_TOPOLOGY_NONE) && (restrict_topology
3983 != GNUNET_TESTING_TOPOLOGY_FROM_FILE))
3984 create_clique (pg, &add_connections, BLACKLIST, GNUNET_NO);
3986 return num_connections;
3988 unblacklisted_connections = 0;
3989 /* Un-blacklist connections as per the topology specified */
3990 switch (restrict_topology)
3992 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
3994 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3995 _("Blacklisting all but clique topology\n"));
3997 unblacklisted_connections = create_clique (pg, &remove_connections,
3998 BLACKLIST, GNUNET_NO);
4000 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
4002 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4003 _("Blacklisting all but small world (ring) topology\n"));
4005 unblacklisted_connections = create_small_world_ring (pg,
4006 &remove_connections,
4009 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
4011 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4013 ("Blacklisting all but small world (2d-torus) topology\n"));
4015 unblacklisted_connections = create_small_world (pg, &remove_connections,
4018 case GNUNET_TESTING_TOPOLOGY_RING:
4020 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4021 _("Blacklisting all but ring topology\n"));
4023 unblacklisted_connections
4024 = create_ring (pg, &remove_connections, BLACKLIST);
4026 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
4028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4029 _("Blacklisting all but 2d torus topology\n"));
4031 unblacklisted_connections = create_2d_torus (pg, &remove_connections,
4034 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
4036 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4037 _("Blacklisting all but Erdos-Renyi topology\n"));
4039 unblacklisted_connections = create_erdos_renyi (pg, &remove_connections,
4042 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
4044 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4045 _("Blacklisting all but InterNAT topology\n"));
4049 for (off = 0; off < pg->total; off++)
4051 conn_iter = pg->peers[off].allowed_peers_head;
4052 while (conn_iter != NULL)
4054 temp_conn = conn_iter->next;
4055 GNUNET_free(conn_iter);
4056 conn_iter = temp_conn;
4058 pg->peers[off].allowed_peers_head = NULL;
4059 pg->peers[off].allowed_peers_tail = NULL;
4061 conn_iter = pg->peers[off].connect_peers_head;
4062 while (conn_iter != NULL)
4064 temp_conn = conn_iter->next;
4065 GNUNET_free(conn_iter);
4066 conn_iter = temp_conn;
4068 pg->peers[off].connect_peers_head = NULL;
4069 pg->peers[off].connect_peers_tail = NULL;
4071 unblacklisted_connections
4072 = create_nated_internet_copy (pg, &remove_connections, BLACKLIST);
4074 unblacklisted_connections =
4075 create_nated_internet (pg, &remove_connections, BLACKLIST);
4079 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
4081 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4082 _("Blacklisting all but Scale Free topology\n"));
4084 unblacklisted_connections = create_scale_free (pg, &remove_connections,
4087 case GNUNET_TESTING_TOPOLOGY_LINE:
4089 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4090 _("Blacklisting all but straight line topology\n"));
4092 unblacklisted_connections
4093 = create_line (pg, &remove_connections, BLACKLIST);
4095 case GNUNET_TESTING_TOPOLOGY_NONE: /* Fall through */
4096 case GNUNET_TESTING_TOPOLOGY_FROM_FILE:
4098 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4100 ("Creating no blacklist topology (all peers can connect at transport level)\n"));
4102 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
4103 ("Creating blacklist topology from allowed\n"));
4104 unblacklisted_connections = copy_allowed (pg, &remove_connections);
4109 if ((unblacklisted_connections > 0) && (restrict_transports != NULL))
4111 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Creating blacklist with `%s'\n",
4112 restrict_transports);
4113 ret = create_and_copy_blacklist_files (pg, restrict_transports);
4114 if (ret != GNUNET_OK)
4117 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4118 _("Failed during blacklist file copying!\n"));
4125 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4126 _("Blacklist files created/copied successfully!\n"));
4130 return num_connections;
4135 * Iterator for choosing random peers to connect.
4137 * @param cls closure, a RandomContext
4138 * @param key the key the second Daemon was stored under
4139 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4141 * @return GNUNET_YES to continue iteration
4144 random_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4146 struct RandomContext *random_ctx = cls;
4147 double random_number;
4148 uint32_t second_pos;
4149 GNUNET_HashCode first_hash;
4152 GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
4153 UINT64_MAX)) / ((double) UINT64_MAX);
4154 if (random_number < random_ctx->percentage)
4156 GNUNET_assert (GNUNET_OK ==
4157 GNUNET_CONTAINER_multihashmap_put (random_ctx->
4158 first->connect_peers_working_set,
4160 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4163 /* Now we have considered this particular connection, remove it from the second peer so it's not double counted */
4164 uid_from_hash (key, &second_pos);
4165 hash_from_uid (random_ctx->first_uid, &first_hash);
4166 GNUNET_assert (random_ctx->pg->total > second_pos);
4167 GNUNET_assert (GNUNET_YES ==
4168 GNUNET_CONTAINER_multihashmap_remove (random_ctx->
4170 [second_pos].connect_peers,
4179 * Iterator for adding at least X peers to a peers connection set.
4181 * @param cls closure, MinimumContext
4182 * @param key the key the second Daemon was stored under
4183 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4185 * @return GNUNET_YES to continue iteration
4188 minimum_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4190 struct MinimumContext *min_ctx = cls;
4191 uint32_t second_pos;
4192 GNUNET_HashCode first_hash;
4195 if (GNUNET_CONTAINER_multihashmap_size
4196 (min_ctx->first->connect_peers_working_set) < min_ctx->num_to_add)
4198 for (i = 0; i < min_ctx->num_to_add; i++)
4200 if (min_ctx->pg_array[i] == min_ctx->current)
4202 GNUNET_assert (GNUNET_OK ==
4203 GNUNET_CONTAINER_multihashmap_put
4204 (min_ctx->first->connect_peers_working_set, key,
4206 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4207 uid_from_hash (key, &second_pos);
4208 hash_from_uid (min_ctx->first_uid, &first_hash);
4209 GNUNET_assert (min_ctx->pg->total > second_pos);
4210 GNUNET_assert (GNUNET_OK ==
4211 GNUNET_CONTAINER_multihashmap_put (min_ctx->
4213 [second_pos].connect_peers_working_set,
4217 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4218 /* Now we have added this particular connection, remove it from the second peer's map so it's not double counted */
4219 GNUNET_assert (GNUNET_YES ==
4220 GNUNET_CONTAINER_multihashmap_remove
4221 (min_ctx->pg->peers[second_pos].connect_peers,
4222 &first_hash, min_ctx->first->daemon));
4229 return GNUNET_NO; /* We can stop iterating, we have enough peers! */
4234 * Iterator for adding peers to a connection set based on a depth first search.
4236 * @param cls closure, MinimumContext
4237 * @param key the key the second daemon was stored under
4238 * @param value the GNUNET_TESTING_Daemon that the first is to connect to
4240 * @return GNUNET_YES to continue iteration
4243 dfs_connect_iterator (void *cls, const GNUNET_HashCode * key, void *value)
4245 struct DFSContext *dfs_ctx = cls;
4246 GNUNET_HashCode first_hash;
4248 if (dfs_ctx->current == dfs_ctx->chosen)
4250 GNUNET_assert (GNUNET_OK ==
4251 GNUNET_CONTAINER_multihashmap_put (dfs_ctx->
4252 first->connect_peers_working_set,
4254 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4255 uid_from_hash (key, &dfs_ctx->second_uid);
4256 hash_from_uid (dfs_ctx->first_uid, &first_hash);
4257 GNUNET_assert (GNUNET_OK ==
4258 GNUNET_CONTAINER_multihashmap_put (dfs_ctx->
4260 [dfs_ctx->second_uid].connect_peers_working_set,
4264 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY));
4265 GNUNET_assert (GNUNET_YES ==
4266 GNUNET_CONTAINER_multihashmap_remove (dfs_ctx->
4268 [dfs_ctx->second_uid].connect_peers,
4272 /* Can't remove second from first yet because we are currently iterating, hence the return value in the DFSContext! */
4273 return GNUNET_NO; /* We have found our peer, don't iterate more */
4282 * From the set of connections possible, choose percentage percent of connections
4283 * to actually connect.
4285 * @param pg the peergroup we are dealing with
4286 * @param percentage what percent of total connections to make
4289 choose_random_connections(struct GNUNET_TESTING_PeerGroup *pg,
4294 struct PeerConnection *conn_iter;
4295 double random_number;
4297 struct RandomContext random_ctx;
4300 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4303 conn_iter = pg->peers[pg_iter].connect_peers_head;
4304 while (conn_iter != NULL)
4307 = ((double) GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_WEAK,
4309 / ((double) UINT64_MAX);
4310 if (random_number < percentage)
4312 add_connections (pg, pg_iter, conn_iter->index, WORKING_SET,
4315 conn_iter = conn_iter->next;
4318 random_ctx.first_uid = pg_iter;
4319 random_ctx.first = &pg->peers[pg_iter];
4320 random_ctx.percentage = percentage;
4322 pg->peers[pg_iter].connect_peers_working_set
4323 = GNUNET_CONTAINER_multihashmap_create (pg->total);
4324 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].connect_peers,
4325 &random_connect_iterator,
4327 /* Now remove the old connections */
4328 GNUNET_CONTAINER_multihashmap_destroy (pg->
4329 peers[pg_iter].connect_peers);
4330 /* And replace with the random set */
4331 pg->peers[pg_iter].connect_peers
4332 = pg->peers[pg_iter].connect_peers_working_set;
4336 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4338 conn_iter = pg->peers[pg_iter].connect_peers_head;
4339 while (pg->peers[pg_iter].connect_peers_head != NULL)
4340 remove_connections (pg, pg_iter,
4341 pg->peers[pg_iter].connect_peers_head->index,
4342 CONNECT, GNUNET_YES);
4344 pg->peers[pg_iter].connect_peers_head
4345 = pg->peers[pg_iter].connect_peers_working_set_head;
4346 pg->peers[pg_iter].connect_peers_tail
4347 = pg->peers[pg_iter].connect_peers_working_set_tail;
4348 pg->peers[pg_iter].connect_peers_working_set_head = NULL;
4349 pg->peers[pg_iter].connect_peers_working_set_tail = NULL;
4354 * Count the number of connections in a linked list of connections.
4356 * @param conn_list the connection list to get the count of
4358 * @return the number of elements in the list
4361 count_connections(struct PeerConnection *conn_list)
4363 struct PeerConnection *iter;
4367 while (iter != NULL)
4376 count_workingset_connections(struct GNUNET_TESTING_PeerGroup *pg)
4379 unsigned int pg_iter;
4381 struct PeerConnection *conn_iter;
4385 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4388 conn_iter = pg->peers[pg_iter].connect_peers_working_set_head;
4389 while (conn_iter != NULL)
4392 conn_iter = conn_iter->next;
4396 GNUNET_CONTAINER_multihashmap_size (pg->
4398 [pg_iter].connect_peers_working_set);
4406 count_allowed_connections(struct GNUNET_TESTING_PeerGroup *pg)
4409 unsigned int pg_iter;
4411 struct PeerConnection *conn_iter;
4415 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4418 conn_iter = pg->peers[pg_iter].allowed_peers_head;
4419 while (conn_iter != NULL)
4422 conn_iter = conn_iter->next;
4426 GNUNET_CONTAINER_multihashmap_size (pg->
4428 [pg_iter].allowed_peers);
4436 * From the set of connections possible, choose at least num connections per
4439 * @param pg the peergroup we are dealing with
4440 * @param num how many connections at least should each peer have (if possible)?
4443 choose_minimum(struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
4446 struct MinimumContext minimum_ctx;
4448 struct PeerConnection *conn_iter;
4449 unsigned int temp_list_size;
4452 uint32_t random; /* Random list entry to connect peer to */
4457 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4460 = count_connections (pg->peers[pg_iter].connect_peers_head);
4461 if (temp_list_size == 0)
4463 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
4464 "Peer %d has 0 connections!?!?\n", pg_iter);
4467 for (i = 0; i < num; i++)
4469 random = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4471 conn_iter = pg->peers[pg_iter].connect_peers_head;
4472 for (count = 0; count < random; count++)
4473 conn_iter = conn_iter->next;
4474 /* We now have a random connection, connect it! */
4475 GNUNET_assert(conn_iter != NULL);
4476 add_connections (pg, pg_iter, conn_iter->index, WORKING_SET,
4481 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4483 pg->peers[pg_iter].connect_peers_working_set =
4484 GNUNET_CONTAINER_multihashmap_create (num);
4487 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4489 minimum_ctx.first_uid = pg_iter;
4490 minimum_ctx.pg_array =
4491 GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
4492 GNUNET_CONTAINER_multihashmap_size
4493 (pg->peers[pg_iter].connect_peers));
4494 minimum_ctx.first = &pg->peers[pg_iter];
4495 minimum_ctx.pg = pg;
4496 minimum_ctx.num_to_add = num;
4497 minimum_ctx.current = 0;
4498 GNUNET_CONTAINER_multihashmap_iterate (pg->peers[pg_iter].connect_peers,
4499 &minimum_connect_iterator,
4503 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4505 /* Remove the "old" connections */
4506 GNUNET_CONTAINER_multihashmap_destroy (pg->
4507 peers[pg_iter].connect_peers);
4508 /* And replace with the working set */
4509 pg->peers[pg_iter].connect_peers =
4510 pg->peers[pg_iter].connect_peers_working_set;
4513 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4515 while (pg->peers[pg_iter].connect_peers_head != NULL)
4517 conn_iter = pg->peers[pg_iter].connect_peers_head;
4518 GNUNET_CONTAINER_DLL_remove(pg->peers[pg_iter].connect_peers_head,
4519 pg->peers[pg_iter].connect_peers_tail,
4521 GNUNET_free(conn_iter);
4522 /*remove_connections(pg, pg_iter, pg->peers[pg_iter].connect_peers_head->index, CONNECT, GNUNET_YES);*/
4525 pg->peers[pg_iter].connect_peers_head
4526 = pg->peers[pg_iter].connect_peers_working_set_head;
4527 pg->peers[pg_iter].connect_peers_tail
4528 = pg->peers[pg_iter].connect_peers_working_set_tail;
4529 pg->peers[pg_iter].connect_peers_working_set_head = NULL;
4530 pg->peers[pg_iter].connect_peers_working_set_tail = NULL;
4535 struct FindClosestContext
4538 * The currently known closest peer.
4540 struct GNUNET_TESTING_Daemon *closest;
4543 * The info for the peer we are adding connections for.
4545 struct PeerData *curr_peer;
4548 * The distance (bits) between the current
4549 * peer and the currently known closest.
4551 unsigned int closest_dist;
4554 * The offset of the closest known peer in
4557 unsigned int closest_num;
4561 * Iterator over hash map entries of the allowed
4562 * peer connections. Find the closest, not already
4563 * connected peer and return it.
4565 * @param cls closure (struct FindClosestContext)
4566 * @param key current key code (hash of offset in pg)
4567 * @param value value in the hash map - a GNUNET_TESTING_Daemon
4568 * @return GNUNET_YES if we should continue to
4573 find_closest_peers (void *cls, const GNUNET_HashCode * key, void *value)
4575 struct FindClosestContext *closest_ctx = cls;
4576 struct GNUNET_TESTING_Daemon *daemon = value;
4578 if (((closest_ctx->closest == NULL) ||
4579 (GNUNET_CRYPTO_hash_matching_bits
4580 (&daemon->id.hashPubKey,
4581 &closest_ctx->curr_peer->daemon->id.hashPubKey) >
4582 closest_ctx->closest_dist))
4584 GNUNET_CONTAINER_multihashmap_contains (closest_ctx->
4585 curr_peer->connect_peers,
4588 closest_ctx->closest_dist =
4589 GNUNET_CRYPTO_hash_matching_bits (&daemon->id.hashPubKey,
4590 &closest_ctx->curr_peer->daemon->
4592 closest_ctx->closest = daemon;
4593 uid_from_hash (key, &closest_ctx->closest_num);
4599 * From the set of connections possible, choose at num connections per
4600 * peer based on depth which are closest out of those allowed. Guaranteed
4601 * to add num peers to connect to, provided there are that many peers
4602 * in the underlay topology to connect to.
4604 * @param pg the peergroup we are dealing with
4605 * @param num how many connections at least should each peer have (if possible)?
4606 * @param proc processor to actually add the connections
4607 * @param list the peer list to use
4610 add_closest (struct GNUNET_TESTING_PeerGroup *pg, unsigned int num,
4611 GNUNET_TESTING_ConnectionProcessor proc, enum PeerLists list)
4616 struct FindClosestContext closest_ctx;
4621 for (i = 0; i < num; i++) /* Each time find a closest peer (from those available) */
4623 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4625 closest_ctx.curr_peer = &pg->peers[pg_iter];
4626 closest_ctx.closest = NULL;
4627 closest_ctx.closest_dist = 0;
4628 closest_ctx.closest_num = 0;
4629 GNUNET_CONTAINER_multihashmap_iterate (pg->
4630 peers[pg_iter].allowed_peers,
4631 &find_closest_peers,
4633 if (closest_ctx.closest != NULL)
4635 GNUNET_assert (closest_ctx.closest_num < pg->total);
4636 proc (pg, pg_iter, closest_ctx.closest_num, list);
4644 * From the set of connections possible, choose at least num connections per
4645 * peer based on depth first traversal of peer connections. If DFS leaves
4646 * peers unconnected, ensure those peers get connections.
4648 * @param pg the peergroup we are dealing with
4649 * @param num how many connections at least should each peer have (if possible)?
4652 perform_dfs(struct GNUNET_TESTING_PeerGroup *pg, unsigned int num)
4656 uint32_t starting_peer;
4657 uint32_t least_connections;
4658 uint32_t random_connection;
4660 unsigned int temp_count;
4661 struct PeerConnection *peer_iter;
4663 struct DFSContext dfs_ctx;
4664 GNUNET_HashCode second_hash;
4670 while ((count_workingset_connections (pg) < num * pg->total)
4671 && (count_allowed_connections (pg) > 0))
4673 if (dfs_count % pg->total == 0) /* Restart the DFS at some weakly connected peer */
4675 least_connections = -1; /* Set to very high number */
4676 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4679 = count_connections (
4680 pg->peers[pg_iter].connect_peers_working_set_head);
4681 if (temp_count < least_connections)
4683 starting_peer = pg_iter;
4684 least_connections = temp_count;
4690 = count_connections (pg->peers[starting_peer].connect_peers_head);
4691 if (temp_count == 0)
4692 continue; /* FIXME: infinite loop? */
4694 random_connection = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4697 peer_iter = pg->peers[starting_peer].connect_peers_head;
4698 while (temp_count < random_connection)
4700 peer_iter = peer_iter->next;
4703 GNUNET_assert(peer_iter != NULL);
4704 add_connections (pg, starting_peer, peer_iter->index, WORKING_SET,
4706 remove_connections (pg, starting_peer, peer_iter->index, CONNECT,
4708 starting_peer = peer_iter->index;
4713 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4715 pg->peers[pg_iter].connect_peers_working_set =
4716 GNUNET_CONTAINER_multihashmap_create (num);
4721 while ((count_workingset_connections (pg) < num * pg->total)
4722 && (count_allowed_connections (pg) > 0))
4724 if (dfs_count % pg->total == 0) /* Restart the DFS at some weakly connected peer */
4726 least_connections = -1; /* Set to very high number */
4727 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4729 if (GNUNET_CONTAINER_multihashmap_size
4730 (pg->peers[pg_iter].connect_peers_working_set) <
4733 starting_peer = pg_iter;
4735 GNUNET_CONTAINER_multihashmap_size (pg->
4737 [pg_iter].connect_peers_working_set);
4742 if (GNUNET_CONTAINER_multihashmap_size (pg->peers[starting_peer].connect_peers) == 0) /* Ensure there is at least one peer left to connect! */
4748 /* Choose a random peer from the chosen peers set of connections to add */
4750 GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK,
4751 GNUNET_CONTAINER_multihashmap_size
4752 (pg->peers[starting_peer].connect_peers));
4753 dfs_ctx.first_uid = starting_peer;
4754 dfs_ctx.first = &pg->peers[starting_peer];
4756 dfs_ctx.current = 0;
4758 GNUNET_CONTAINER_multihashmap_iterate (pg->
4760 [starting_peer].connect_peers,
4761 &dfs_connect_iterator, &dfs_ctx);
4762 /* Remove the second from the first, since we will be continuing the search and may encounter the first peer again! */
4763 hash_from_uid (dfs_ctx.second_uid, &second_hash);
4764 GNUNET_assert (GNUNET_YES ==
4765 GNUNET_CONTAINER_multihashmap_remove (pg->peers
4766 [starting_peer].connect_peers,
4770 [dfs_ctx.second_uid].daemon));
4771 starting_peer = dfs_ctx.second_uid;
4774 for (pg_iter = 0; pg_iter < pg->total; pg_iter++)
4776 /* Remove the "old" connections */
4777 GNUNET_CONTAINER_multihashmap_destroy (pg->
4778 peers[pg_iter].connect_peers);
4779 /* And replace with the working set */
4780 pg->peers[pg_iter].connect_peers =
4781 pg->peers[pg_iter].connect_peers_working_set;
4787 * Internal callback for topology information for a particular peer.
4790 internal_topology_callback(void *cls, const struct GNUNET_PeerIdentity *peer,
4791 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
4793 struct CoreContext *core_ctx = cls;
4794 struct TopologyIterateContext *iter_ctx = core_ctx->iter_context;
4796 if (peer == NULL) /* Either finished, or something went wrong */
4798 iter_ctx->completed++;
4799 iter_ctx->connected--;
4800 /* One core context allocated per iteration, must free! */
4801 GNUNET_free (core_ctx);
4805 iter_ctx->topology_cb (iter_ctx->cls, &core_ctx->daemon->id, peer, NULL);
4808 if (iter_ctx->completed == iter_ctx->total)
4810 iter_ctx->topology_cb (iter_ctx->cls, NULL, NULL, NULL);
4811 /* Once all are done, free the iteration context */
4812 GNUNET_free (iter_ctx);
4817 * Check running topology iteration tasks, if below max start a new one, otherwise
4818 * schedule for some time in the future.
4821 schedule_get_topology(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
4823 struct CoreContext *core_context = cls;
4824 struct TopologyIterateContext *topology_context =
4825 (struct TopologyIterateContext *) core_context->iter_context;
4826 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
4829 if (topology_context->connected
4830 > topology_context->pg->max_outstanding_connections)
4832 #if VERBOSE_TESTING > 2
4833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4835 ("Delaying connect, we have too many outstanding connections!\n"));
4837 GNUNET_SCHEDULER_add_delayed (
4838 GNUNET_TIME_relative_multiply (
4839 GNUNET_TIME_UNIT_MILLISECONDS,
4841 &schedule_get_topology, core_context);
4845 #if VERBOSE_TESTING > 2
4846 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4847 _("Creating connection, outstanding_connections is %d\n"),
4848 outstanding_connects);
4850 topology_context->connected++;
4852 if (GNUNET_OK != GNUNET_CORE_iterate_peers (core_context->daemon->cfg,
4853 &internal_topology_callback,
4856 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Topology iteration failed.\n");
4857 internal_topology_callback (core_context, NULL, NULL);
4863 * Iterate over all (running) peers in the peer group, retrieve
4864 * all connections that each currently has.
4867 GNUNET_TESTING_get_topology(struct GNUNET_TESTING_PeerGroup *pg,
4868 GNUNET_TESTING_NotifyTopology cb, void *cls)
4870 struct TopologyIterateContext *topology_context;
4871 struct CoreContext *core_ctx;
4873 unsigned int total_count;
4875 /* Allocate a single topology iteration context */
4876 topology_context = GNUNET_malloc (sizeof (struct TopologyIterateContext));
4877 topology_context->topology_cb = cb;
4878 topology_context->cls = cls;
4879 topology_context->pg = pg;
4881 for (i = 0; i < pg->total; i++)
4883 if (pg->peers[i].daemon->running == GNUNET_YES)
4885 /* Allocate one core context per core we need to connect to */
4886 core_ctx = GNUNET_malloc (sizeof (struct CoreContext));
4887 core_ctx->daemon = pg->peers[i].daemon;
4888 /* Set back pointer to topology iteration context */
4889 core_ctx->iter_context = topology_context;
4890 GNUNET_SCHEDULER_add_now (&schedule_get_topology, core_ctx);
4894 if (total_count == 0)
4896 cb (cls, NULL, NULL, "Cannot iterate over topology, no running peers!");
4897 GNUNET_free (topology_context);
4900 topology_context->total = total_count;
4905 * Callback function to process statistic values.
4906 * This handler is here only really to insert a peer
4907 * identity (or daemon) so the statistics can be uniquely
4908 * tied to a single running peer.
4910 * @param cls closure
4911 * @param subsystem name of subsystem that created the statistic
4912 * @param name the name of the datum
4913 * @param value the current value
4914 * @param is_persistent GNUNET_YES if the value is persistent, GNUNET_NO if not
4915 * @return GNUNET_OK to continue, GNUNET_SYSERR to abort iteration
4918 internal_stats_callback(void *cls, const char *subsystem, const char *name,
4919 uint64_t value, int is_persistent)
4921 struct StatsCoreContext *core_context = cls;
4922 struct StatsIterateContext *stats_context =
4923 (struct StatsIterateContext *) core_context->iter_context;
4925 return stats_context->proc (stats_context->cls, &core_context->daemon->id,
4926 subsystem, name, value, is_persistent);
4930 * Internal continuation call for statistics iteration.
4932 * @param cls closure, the CoreContext for this iteration
4933 * @param success whether or not the statistics iterations
4934 * was canceled or not (we don't care)
4937 internal_stats_cont(void *cls, int success)
4939 struct StatsCoreContext *core_context = cls;
4940 struct StatsIterateContext *stats_context =
4941 (struct StatsIterateContext *) core_context->iter_context;
4943 stats_context->connected--;
4944 stats_context->completed++;
4946 if (stats_context->completed == stats_context->total)
4948 stats_context->cont (stats_context->cls, GNUNET_YES);
4949 GNUNET_free (stats_context);
4952 if (core_context->stats_handle != NULL)
4953 GNUNET_STATISTICS_destroy (core_context->stats_handle, GNUNET_NO);
4955 GNUNET_free (core_context);
4959 * Check running topology iteration tasks, if below max start a new one, otherwise
4960 * schedule for some time in the future.
4963 schedule_get_statistics(void *cls,
4964 const struct GNUNET_SCHEDULER_TaskContext *tc)
4966 struct StatsCoreContext *core_context = cls;
4967 struct StatsIterateContext *stats_context =
4968 (struct StatsIterateContext *) core_context->iter_context;
4970 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
4973 if (stats_context->connected > stats_context->pg->max_outstanding_connections)
4975 #if VERBOSE_TESTING > 2
4976 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4978 ("Delaying connect, we have too many outstanding connections!\n"));
4980 GNUNET_SCHEDULER_add_delayed (
4981 GNUNET_TIME_relative_multiply (
4982 GNUNET_TIME_UNIT_MILLISECONDS,
4984 &schedule_get_statistics, core_context);
4988 #if VERBOSE_TESTING > 2
4989 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
4990 _("Creating connection, outstanding_connections is %d\n"),
4991 outstanding_connects);
4994 stats_context->connected++;
4995 core_context->stats_handle
4996 = GNUNET_STATISTICS_create ("testing", core_context->daemon->cfg);
4997 if (core_context->stats_handle == NULL)
4999 internal_stats_cont (core_context, GNUNET_NO);
5003 core_context->stats_get_handle
5004 = GNUNET_STATISTICS_get (core_context->stats_handle, NULL, NULL,
5005 GNUNET_TIME_relative_get_forever (),
5006 &internal_stats_cont,
5007 &internal_stats_callback, core_context);
5008 if (core_context->stats_get_handle == NULL)
5009 internal_stats_cont (core_context, GNUNET_NO);
5014 struct DuplicateStats
5017 * Next item in the list
5019 struct DuplicateStats *next;
5022 * Nasty string, concatenation of relevant information.
5024 char *unique_string;
5028 * Check whether the combination of port/host/unix domain socket
5029 * already exists in the list of peers being checked for statistics.
5031 * @param pg the peergroup in question
5032 * @param specific_peer the peer we're concerned with
5033 * @param stats_list the list to return to the caller
5035 * @return GNUNET_YES if the statistics instance has been seen already,
5036 * GNUNET_NO if not (and we may have added it to the list)
5039 stats_check_existing(struct GNUNET_TESTING_PeerGroup *pg,
5040 struct PeerData *specific_peer,
5041 struct DuplicateStats **stats_list)
5043 struct DuplicateStats *pos;
5044 char *unix_domain_socket;
5045 unsigned long long port;
5048 != GNUNET_CONFIGURATION_get_value_yesno (pg->cfg, "testing",
5049 "single_statistics_per_host"))
5050 return GNUNET_NO; /* Each peer has its own statistics instance, do nothing! */
5053 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_string (specific_peer->cfg,
5056 &unix_domain_socket))
5059 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (specific_peer->cfg,
5060 "statistics", "port",
5063 GNUNET_free(unix_domain_socket);
5067 if (specific_peer->daemon->hostname != NULL)
5068 GNUNET_asprintf (&to_match, "%s%s%llu", specific_peer->daemon->hostname,
5069 unix_domain_socket, port);
5071 GNUNET_asprintf (&to_match, "%s%llu", unix_domain_socket, port);
5075 if (0 == strcmp (to_match, pos->unique_string))
5077 GNUNET_free (unix_domain_socket);
5078 GNUNET_free (to_match);
5083 pos = GNUNET_malloc (sizeof (struct DuplicateStats));
5084 pos->unique_string = to_match;
5085 pos->next = *stats_list;
5087 GNUNET_free (unix_domain_socket);
5092 * Iterate over all (running) peers in the peer group, retrieve
5093 * all statistics from each.
5096 GNUNET_TESTING_get_statistics(struct GNUNET_TESTING_PeerGroup *pg,
5097 GNUNET_STATISTICS_Callback cont,
5098 GNUNET_TESTING_STATISTICS_Iterator proc,
5101 struct StatsIterateContext *stats_context;
5102 struct StatsCoreContext *core_ctx;
5104 unsigned int total_count;
5105 struct DuplicateStats *stats_list;
5106 struct DuplicateStats *pos;
5109 /* Allocate a single stats iteration context */
5110 stats_context = GNUNET_malloc (sizeof (struct StatsIterateContext));
5111 stats_context->cont = cont;
5112 stats_context->proc = proc;
5113 stats_context->cls = cls;
5114 stats_context->pg = pg;
5117 for (i = 0; i < pg->total; i++)
5119 if ((pg->peers[i].daemon->running == GNUNET_YES) && (GNUNET_NO
5120 == stats_check_existing (pg, &pg->peers[i], &stats_list)))
5122 /* Allocate one core context per core we need to connect to */
5123 core_ctx = GNUNET_malloc (sizeof (struct StatsCoreContext));
5124 core_ctx->daemon = pg->peers[i].daemon;
5125 /* Set back pointer to topology iteration context */
5126 core_ctx->iter_context = stats_context;
5127 GNUNET_SCHEDULER_add_now (&schedule_get_statistics, core_ctx);
5132 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5133 "Retrieving stats from %u total instances.\n", total_count);
5134 stats_context->total = total_count;
5135 if (stats_list != NULL)
5140 GNUNET_free (pos->unique_string);
5141 stats_list = pos->next;
5143 pos = stats_list->next;
5150 * Stop the connection process temporarily.
5152 * @param pg the peer group to stop connecting
5155 GNUNET_TESTING_stop_connections(struct GNUNET_TESTING_PeerGroup *pg)
5157 pg->stop_connects = GNUNET_YES;
5161 * Resume the connection process temporarily.
5163 * @param pg the peer group to resume connecting
5166 GNUNET_TESTING_resume_connections(struct GNUNET_TESTING_PeerGroup *pg)
5168 pg->stop_connects = GNUNET_NO;
5172 * There are many ways to connect peers that are supported by this function.
5173 * To connect peers in the same topology that was created via the
5174 * GNUNET_TESTING_create_topology, the topology variable must be set to
5175 * GNUNET_TESTING_TOPOLOGY_NONE. If the topology variable is specified,
5176 * a new instance of that topology will be generated and attempted to be
5177 * connected. This could result in some connections being impossible,
5178 * because some topologies are non-deterministic.
5180 * @param pg the peer group struct representing the running peers
5181 * @param topology which topology to connect the peers in
5182 * @param options options for connecting the topology
5183 * @param option_modifier modifier for options that take a parameter
5184 * @param connect_timeout how long to wait before giving up on connecting
5186 * @param connect_attempts how many times to attempt to connect two peers
5187 * over the connect_timeout duration
5188 * @param notify_callback notification to be called once all connections completed
5189 * @param notify_cls closure for notification callback
5191 * @return the number of connections that will be attempted, GNUNET_SYSERR on error
5194 GNUNET_TESTING_connect_topology(
5195 struct GNUNET_TESTING_PeerGroup *pg,
5196 enum GNUNET_TESTING_Topology topology,
5197 enum GNUNET_TESTING_TopologyOption options,
5198 double option_modifier,
5199 struct GNUNET_TIME_Relative connect_timeout,
5200 unsigned int connect_attempts,
5201 GNUNET_TESTING_NotifyCompletion notify_callback,
5206 case GNUNET_TESTING_TOPOLOGY_CLIQUE:
5207 #if VERBOSE_TOPOLOGY
5208 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5209 _("Creating clique CONNECT topology\n"));
5211 create_clique (pg, &add_connections, CONNECT, GNUNET_NO);
5213 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD_RING:
5214 #if VERBOSE_TOPOLOGY
5215 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5216 _("Creating small world (ring) CONNECT topology\n"));
5218 create_small_world_ring (pg, &add_connections, CONNECT);
5220 case GNUNET_TESTING_TOPOLOGY_SMALL_WORLD:
5221 #if VERBOSE_TOPOLOGY
5222 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5223 _("Creating small world (2d-torus) CONNECT topology\n"));
5225 create_small_world (pg, &add_connections, CONNECT);
5227 case GNUNET_TESTING_TOPOLOGY_RING:
5228 #if VERBOSE_TOPOLOGY
5229 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating ring CONNECT topology\n"));
5231 create_ring (pg, &add_connections, CONNECT);
5233 case GNUNET_TESTING_TOPOLOGY_2D_TORUS:
5234 #if VERBOSE_TOPOLOGY
5235 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5236 _("Creating 2d torus CONNECT topology\n"));
5238 create_2d_torus (pg, &add_connections, CONNECT);
5240 case GNUNET_TESTING_TOPOLOGY_ERDOS_RENYI:
5241 #if VERBOSE_TOPOLOGY
5242 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5243 _("Creating Erdos-Renyi CONNECT topology\n"));
5245 create_erdos_renyi (pg, &add_connections, CONNECT);
5247 case GNUNET_TESTING_TOPOLOGY_INTERNAT:
5248 #if VERBOSE_TOPOLOGY
5249 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5250 _("Creating InterNAT CONNECT topology\n"));
5252 create_nated_internet (pg, &add_connections, CONNECT);
5254 case GNUNET_TESTING_TOPOLOGY_SCALE_FREE:
5255 #if VERBOSE_TOPOLOGY
5256 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5257 _("Creating Scale Free CONNECT topology\n"));
5259 create_scale_free (pg, &add_connections, CONNECT);
5261 case GNUNET_TESTING_TOPOLOGY_LINE:
5262 #if VERBOSE_TOPOLOGY
5263 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5264 _("Creating straight line CONNECT topology\n"));
5266 create_line (pg, &add_connections, CONNECT);
5268 case GNUNET_TESTING_TOPOLOGY_NONE:
5269 #if VERBOSE_TOPOLOGY
5270 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _("Creating no CONNECT topology\n"));
5272 copy_allowed_topology (pg);
5275 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5276 ("Unknown topology specification, can't connect peers!\n"));
5277 return GNUNET_SYSERR;
5282 case GNUNET_TESTING_TOPOLOGY_OPTION_RANDOM:
5283 #if VERBOSE_TOPOLOGY
5284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
5285 ("Connecting random subset (%'.2f percent) of possible peers\n"), 100
5288 choose_random_connections (pg, option_modifier);
5290 case GNUNET_TESTING_TOPOLOGY_OPTION_MINIMUM:
5291 #if VERBOSE_TOPOLOGY
5292 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5293 _("Connecting a minimum of %u peers each (if possible)\n"),
5294 (unsigned int) option_modifier);
5296 choose_minimum (pg, (unsigned int) option_modifier);
5298 case GNUNET_TESTING_TOPOLOGY_OPTION_DFS:
5299 #if VERBOSE_TOPOLOGY
5300 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, _
5301 ("Using DFS to connect a minimum of %u peers each (if possible)\n"),
5302 (unsigned int) option_modifier);
5305 perform_dfs (pg, (int) option_modifier);
5308 case GNUNET_TESTING_TOPOLOGY_OPTION_ADD_CLOSEST:
5309 #if VERBOSE_TOPOLOGY
5310 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5311 ("Finding additional %u closest peers each (if possible)\n"),
5312 (unsigned int) option_modifier);
5315 add_closest (pg, (unsigned int) option_modifier,
5316 &add_connections, CONNECT);
5319 case GNUNET_TESTING_TOPOLOGY_OPTION_NONE:
5321 case GNUNET_TESTING_TOPOLOGY_OPTION_ALL:
5327 return connect_topology (pg, connect_timeout, connect_attempts,
5328 notify_callback, notify_cls);
5332 * Lookup and return the number of SSH connections to a host.
5334 * @param hostname the hostname to lookup in the list
5335 * @param pg the peergroup that the host belongs to
5337 * @return the number of current ssh connections to the host
5340 count_outstanding_at_host(const char *hostname,
5341 struct GNUNET_TESTING_PeerGroup *pg)
5343 struct OutstandingSSH *pos;
5345 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5347 GNUNET_assert(pos != NULL);
5348 return pos->outstanding;
5352 * Increment the number of SSH connections to a host by one.
5354 * @param hostname the hostname to lookup in the list
5355 * @param pg the peergroup that the host belongs to
5359 increment_outstanding_at_host(const char *hostname,
5360 struct GNUNET_TESTING_PeerGroup *pg)
5362 struct OutstandingSSH *pos;
5364 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5366 GNUNET_assert(pos != NULL);
5371 * Decrement the number of SSH connections to a host by one.
5373 * @param hostname the hostname to lookup in the list
5374 * @param pg the peergroup that the host belongs to
5378 decrement_outstanding_at_host(const char *hostname,
5379 struct GNUNET_TESTING_PeerGroup *pg)
5381 struct OutstandingSSH *pos;
5383 while ((pos != NULL) && (strcmp (pos->hostname, hostname) != 0))
5385 GNUNET_assert(pos != NULL);
5390 * Callback that is called whenever a hostkey is generated
5391 * for a peer. Call the real callback and decrement the
5392 * starting counter for the peergroup.
5394 * @param cls closure
5395 * @param id identifier for the daemon, NULL on error
5396 * @param d handle for the daemon
5397 * @param emsg error message (NULL on success)
5400 internal_hostkey_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5401 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5403 struct InternalStartContext *internal_context = cls;
5404 internal_context->peer->pg->starting--;
5405 internal_context->peer->pg->started++;
5406 if (internal_context->hostname != NULL)
5407 decrement_outstanding_at_host (internal_context->hostname,
5408 internal_context->peer->pg);
5409 if (internal_context->hostkey_callback != NULL)
5410 internal_context->hostkey_callback (internal_context->hostkey_cls, id, d,
5412 else if (internal_context->peer->pg->started
5413 == internal_context->peer->pg->total)
5415 internal_context->peer->pg->started = 0; /* Internal startup may use this counter! */
5416 GNUNET_TESTING_daemons_continue_startup (internal_context->peer->pg);
5421 * Callback that is called whenever a peer has finished starting.
5422 * Call the real callback and decrement the starting counter
5423 * for the peergroup.
5425 * @param cls closure
5426 * @param id identifier for the daemon, NULL on error
5428 * @param d handle for the daemon
5429 * @param emsg error message (NULL on success)
5432 internal_startup_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5433 const struct GNUNET_CONFIGURATION_Handle *cfg,
5434 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5436 struct InternalStartContext *internal_context = cls;
5437 internal_context->peer->pg->starting--;
5438 if (internal_context->hostname != NULL)
5439 decrement_outstanding_at_host (internal_context->hostname,
5440 internal_context->peer->pg);
5441 if (internal_context->start_cb != NULL)
5442 internal_context->start_cb (internal_context->start_cb_cls, id, cfg, d,
5447 internal_continue_startup(void *cls,
5448 const struct GNUNET_SCHEDULER_TaskContext *tc)
5450 struct InternalStartContext *internal_context = cls;
5452 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
5457 if ((internal_context->peer->pg->starting
5458 < internal_context->peer->pg->max_concurrent_ssh)
5459 || ((internal_context->hostname != NULL)
5460 && (count_outstanding_at_host (internal_context->hostname,
5461 internal_context->peer->pg)
5462 < internal_context->peer->pg->max_concurrent_ssh)))
5464 if (internal_context->hostname != NULL)
5465 increment_outstanding_at_host (internal_context->hostname,
5466 internal_context->peer->pg);
5467 internal_context->peer->pg->starting++;
5468 GNUNET_TESTING_daemon_continue_startup (internal_context->peer->daemon);
5472 GNUNET_SCHEDULER_add_delayed (
5473 GNUNET_TIME_relative_multiply (
5474 GNUNET_TIME_UNIT_MILLISECONDS,
5476 &internal_continue_startup,
5482 * Callback for informing us about a successful
5483 * or unsuccessful churn start call.
5485 * @param cls a ChurnContext
5486 * @param id the peer identity of the started peer
5487 * @param cfg the handle to the configuration of the peer
5488 * @param d handle to the daemon for the peer
5489 * @param emsg NULL on success, non-NULL on failure
5493 churn_start_callback(void *cls, const struct GNUNET_PeerIdentity *id,
5494 const struct GNUNET_CONFIGURATION_Handle *cfg,
5495 struct GNUNET_TESTING_Daemon *d, const char *emsg)
5497 struct ChurnRestartContext *startup_ctx = cls;
5498 struct ChurnContext *churn_ctx = startup_ctx->churn_ctx;
5500 unsigned int total_left;
5501 char *error_message;
5503 error_message = NULL;
5506 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5507 "Churn stop callback failed with error `%s'\n", emsg);
5508 churn_ctx->num_failed_start++;
5512 churn_ctx->num_to_start--;
5516 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5517 "Started peer, %d left.\n", churn_ctx->num_to_start);
5520 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop)
5521 + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
5523 if (total_left == 0)
5525 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
5528 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
5529 churn_ctx->num_failed_start,
5530 churn_ctx->num_failed_stop);
5531 churn_ctx->cb (churn_ctx->cb_cls, error_message);
5532 GNUNET_free_non_null (error_message);
5533 GNUNET_free (churn_ctx);
5534 GNUNET_free (startup_ctx);
5539 schedule_churn_restart(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5541 struct PeerRestartContext *peer_restart_ctx = cls;
5542 struct ChurnRestartContext *startup_ctx = peer_restart_ctx->churn_restart_ctx;
5544 if (startup_ctx->outstanding > startup_ctx->pg->max_concurrent_ssh)
5545 GNUNET_SCHEDULER_add_delayed (
5546 GNUNET_TIME_relative_multiply (
5547 GNUNET_TIME_UNIT_MILLISECONDS,
5549 &schedule_churn_restart, peer_restart_ctx);
5552 GNUNET_TESTING_daemon_start_stopped (peer_restart_ctx->daemon,
5553 startup_ctx->timeout,
5554 &churn_start_callback, startup_ctx);
5555 GNUNET_free (peer_restart_ctx);
5561 internal_start(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5563 struct InternalStartContext *internal_context = cls;
5565 if ( (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
5570 if ((internal_context->peer->pg->starting
5571 < internal_context->peer->pg->max_concurrent_ssh)
5572 || ((internal_context->hostname != NULL)
5573 && (count_outstanding_at_host (internal_context->hostname,
5574 internal_context->peer->pg)
5575 < internal_context->peer->pg->max_concurrent_ssh)))
5577 if (internal_context->hostname != NULL)
5578 increment_outstanding_at_host (internal_context->hostname,
5579 internal_context->peer->pg);
5580 internal_context->peer->pg->starting++;
5581 internal_context->peer->daemon
5582 = GNUNET_TESTING_daemon_start (internal_context->peer->cfg,
5583 internal_context->timeout,
5585 internal_context->hostname,
5586 internal_context->username,
5587 internal_context->sshport,
5588 internal_context->hostkey,
5589 &internal_hostkey_callback,
5591 &internal_startup_callback,
5596 GNUNET_SCHEDULER_add_delayed (
5597 GNUNET_TIME_relative_multiply (
5598 GNUNET_TIME_UNIT_MILLISECONDS,
5600 &internal_start, internal_context);
5603 #if USE_START_HELPER
5605 struct PeerStartHelperContext
5607 struct GNUNET_TESTING_PeerGroup *pg;
5609 struct HostData *host;
5611 struct GNUNET_OS_Process *proc;
5615 check_peers_started (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5617 struct PeerStartHelperContext *helper = cls;
5618 enum GNUNET_OS_ProcessStatusType type;
5621 GNUNET_TESTING_NotifyDaemonRunning cb;
5623 if (GNUNET_NO == GNUNET_OS_process_status (helper->proc, &type, &code)) /* Still running, wait some more! */
5625 GNUNET_SCHEDULER_add_delayed(GNUNET_CONSTANTS_EXEC_WAIT, &check_peers_started, helper);
5629 helper->pg->starting--;
5630 if (helper->pg->starting == 0) /* All peers have finished starting! */
5632 /* Call the peer started callback for each peer, set proper FSM state (?) */
5633 for (i = 0; i < helper->pg->total; i++)
5635 cb = helper->pg->peers[i].daemon->cb;
5636 helper->pg->peers[i].daemon->cb = NULL;
5637 helper->pg->peers[i].daemon->running = GNUNET_YES;
5638 helper->pg->peers[i].daemon->phase = SP_START_DONE;
5641 if ((type != GNUNET_OS_PROCESS_EXITED) || (code != 0))
5642 cb (helper->pg->peers[i].daemon->cb_cls,
5643 &helper->pg->peers[i].daemon->id,
5644 helper->pg->peers[i].daemon->cfg, helper->pg->peers[i].daemon,
5645 "Failed to execute peerStartHelper.pl, or return code bad!");
5647 cb (helper->pg->peers[i].daemon->cb_cls,
5648 &helper->pg->peers[i].daemon->id,
5649 helper->pg->peers[i].daemon->cfg, helper->pg->peers[i].daemon,
5656 GNUNET_OS_process_close(helper->proc);
5660 start_peer_helper (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5662 struct PeerStartHelperContext *helper = cls;
5663 char *baseservicehome;
5666 /* ssh user@host peerStartHelper /path/to/basedirectory */
5667 GNUNET_assert(GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (helper->pg->cfg, "PATHS", "SERVICEHOME",
5669 GNUNET_asprintf(&tempdir, "%s/%s/", baseservicehome, helper->host->hostname);
5670 if (NULL != helper->host->username)
5671 GNUNET_asprintf (&arg, "%s@%s", helper->host->username, helper->host->hostname);
5673 GNUNET_asprintf (&arg, "%s", helper->host->hostname);
5675 /* FIXME: Doesn't support ssh_port option! */
5676 helper->proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", arg,
5677 "peerStartHelper.pl", tempdir, NULL);
5678 GNUNET_assert(helper->proc != NULL);
5679 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "starting peers with cmd ssh %s %s %s\n", arg, "peerStartHelper.pl", tempdir);
5680 GNUNET_SCHEDULER_add_now (&check_peers_started, helper);
5681 GNUNET_free (tempdir);
5682 GNUNET_free (baseservicehome);
5688 * Function which continues a peer group starting up
5689 * after successfully generating hostkeys for each peer.
5691 * @param pg the peer group to continue starting
5695 GNUNET_TESTING_daemons_continue_startup(struct GNUNET_TESTING_PeerGroup *pg)
5699 #if USE_START_HELPER
5700 if ((pg->num_hosts > 0) && (pg->hostkey_data != NULL))
5702 struct PeerStartHelperContext *helper;
5703 pg->starting = pg->num_hosts;
5704 for (i = 0; i < pg->num_hosts; i++)
5706 helper = GNUNET_malloc(sizeof(struct PeerStartHelperContext));
5708 helper->host = &pg->hosts[i];
5709 GNUNET_SCHEDULER_add_now(&start_peer_helper, helper);
5715 for (i = 0; i < pg->total; i++)
5717 GNUNET_SCHEDULER_add_now (&internal_continue_startup,
5718 &pg->peers[i].internal_context);
5723 for (i = 0; i < pg->total; i++)
5725 GNUNET_SCHEDULER_add_now (&internal_continue_startup,
5726 &pg->peers[i].internal_context);
5731 #if USE_START_HELPER
5733 call_hostkey_callbacks (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
5735 struct GNUNET_TESTING_PeerGroup *pg = cls;
5737 for (i = 0; i < pg->total; i++)
5739 if (pg->peers[i].internal_context.hostkey_callback != NULL)
5740 pg->peers[i].internal_context.hostkey_callback (pg->peers[i].internal_context.hostkey_cls,
5741 &pg->peers[i].daemon->id,
5742 pg->peers[i].daemon,
5746 if (pg->peers[0].internal_context.hostkey_callback == NULL)
5747 GNUNET_TESTING_daemons_continue_startup (pg);
5752 * Start count gnunet instances with the same set of transports and
5753 * applications. The port numbers (any option called "PORT") will be
5754 * adjusted to ensure that no two peers running on the same system
5755 * have the same port(s) in their respective configurations.
5757 * @param cfg configuration template to use
5758 * @param total number of daemons to start
5759 * @param max_concurrent_connections for testing, how many peers can
5760 * we connect to simultaneously
5761 * @param max_concurrent_ssh when starting with ssh, how many ssh
5762 * connections will we allow at once (based on remote hosts allowed!)
5763 * @param timeout total time allowed for peers to start
5764 * @param hostkey_callback function to call on each peers hostkey generation
5765 * if NULL, peers will be started by this call, if non-null,
5766 * GNUNET_TESTING_daemons_continue_startup must be called after
5767 * successful hostkey generation
5768 * @param hostkey_cls closure for hostkey callback
5769 * @param cb function to call on each daemon that was started
5770 * @param cb_cls closure for cb
5771 * @param connect_callback function to call each time two hosts are connected
5772 * @param connect_callback_cls closure for connect_callback
5773 * @param hostnames linked list of host structs to use to start peers on
5774 * (NULL to run on localhost only)
5776 * @return NULL on error, otherwise handle to control peer group
5778 struct GNUNET_TESTING_PeerGroup *
5779 GNUNET_TESTING_daemons_start(const struct GNUNET_CONFIGURATION_Handle *cfg,
5781 unsigned int max_concurrent_connections,
5782 unsigned int max_concurrent_ssh,
5783 struct GNUNET_TIME_Relative timeout,
5784 GNUNET_TESTING_NotifyHostkeyCreated hostkey_callback,
5786 GNUNET_TESTING_NotifyDaemonRunning cb,
5788 GNUNET_TESTING_NotifyConnection connect_callback,
5789 void *connect_callback_cls,
5790 const struct GNUNET_TESTING_Host *hostnames)
5792 struct GNUNET_TESTING_PeerGroup *pg;
5793 const struct GNUNET_TESTING_Host *hostpos;
5794 const char *hostname;
5795 const char *username;
5796 char *baseservicehome;
5797 char *newservicehome;
5799 char *hostkeys_file;
5802 struct GNUNET_DISK_FileHandle *fd;
5803 struct GNUNET_CONFIGURATION_Handle *pcfg;
5805 struct OutstandingSSH *ssh_entry;
5806 unsigned int hostcnt;
5813 uint64_t total_hostkeys;
5814 struct GNUNET_OS_Process *proc;
5825 pg = GNUNET_malloc (sizeof (struct GNUNET_TESTING_PeerGroup));
5827 pg->notify_connection = connect_callback;
5828 pg->notify_connection_cls = connect_callback_cls;
5830 pg->max_timeout = GNUNET_TIME_relative_to_absolute (timeout);
5831 pg->peers = GNUNET_malloc (total * sizeof (struct PeerData));
5832 pg->max_outstanding_connections = max_concurrent_connections;
5833 pg->max_concurrent_ssh = max_concurrent_ssh;
5834 if (NULL != hostnames)
5837 hostpos = hostnames;
5838 while (hostpos != NULL)
5840 hostpos = hostpos->next;
5843 pg->hosts = GNUNET_malloc (off * sizeof (struct HostData));
5846 hostpos = hostnames;
5847 while (hostpos != NULL)
5849 pg->hosts[off].minport = LOW_PORT;
5850 pg->hosts[off].hostname = GNUNET_strdup (hostpos->hostname);
5851 if (hostpos->username != NULL)
5852 pg->hosts[off].username = GNUNET_strdup (hostpos->username);
5853 pg->hosts[off].sshport = hostpos->port;
5854 hostpos = hostpos->next;
5864 pg->num_hosts = off;
5872 /* Create the servicehome directory for each remote peer */
5873 GNUNET_assert(GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (cfg, "PATHS", "SERVICEHOME",
5875 for (i = 0; i < pg->num_hosts; i++)
5877 ssh_entry = GNUNET_malloc(sizeof(struct OutstandingSSH));
5878 ssh_entry->hostname = pg->hosts[i].hostname; /* Don't free! */
5879 GNUNET_CONTAINER_DLL_insert(pg->ssh_head, pg->ssh_tail, ssh_entry);
5880 GNUNET_asprintf(&tmpdir, "%s/%s", baseservicehome, pg->hosts[i].hostname);
5881 if (NULL != pg->hosts[i].username)
5882 GNUNET_asprintf (&arg, "%s@%s", pg->hosts[i].username,
5883 pg->hosts[i].hostname);
5885 GNUNET_asprintf (&arg, "%s", pg->hosts[i].hostname);
5886 if (pg->hosts[i].sshport != 0)
5888 GNUNET_asprintf (&ssh_port_str, "%d", pg->hosts[i].sshport);
5889 proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", "-P",
5894 arg, "mkdir -p", tmpdir,
5898 proc = GNUNET_OS_start_process (NULL, NULL, "ssh", "ssh", arg,
5899 "mkdir -p", tmpdir, NULL);
5900 GNUNET_assert(proc != NULL);
5901 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5902 "Creating remote dir with command ssh %s %s %s\n", arg,
5903 " mkdir -p ", tmpdir);
5904 GNUNET_free(tmpdir);
5906 GNUNET_OS_process_wait (proc);
5907 GNUNET_OS_process_close(proc);
5909 GNUNET_free(baseservicehome);
5911 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (cfg, "TESTING",
5915 if (GNUNET_YES != GNUNET_DISK_file_test (hostkeys_file))
5916 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5917 _("Could not read hostkeys file!\n"));
5920 /* Check hostkey file size, read entire thing into memory */
5921 fd = GNUNET_DISK_file_open (hostkeys_file,
5922 GNUNET_DISK_OPEN_READ,
5923 GNUNET_DISK_PERM_NONE);
5926 GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR,
5929 GNUNET_free (hostkeys_file);
5930 for (i=0;i<pg->num_hosts;i++)
5932 GNUNET_free (pg->hosts[i].hostname);
5933 GNUNET_free_non_null (pg->hosts[i].username);
5935 GNUNET_free (pg->peers);
5936 GNUNET_free (pg->hosts);
5941 if (GNUNET_YES != GNUNET_DISK_file_size (hostkeys_file, &fs,
5945 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5946 "Found file size %llu for hostkeys, expect hostkeys to be size %d\n",
5947 fs, HOSTKEYFILESIZE);
5949 if (fs % HOSTKEYFILESIZE != 0)
5951 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
5952 "File size %llu seems incorrect for hostkeys...\n",
5957 total_hostkeys = fs / HOSTKEYFILESIZE;
5958 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
5959 "Will read %llu hostkeys from file\n",
5961 pg->hostkey_data = GNUNET_malloc_large (fs);
5962 GNUNET_assert (fs == GNUNET_DISK_file_read (fd, pg->hostkey_data, fs));
5963 GNUNET_assert(GNUNET_OK == GNUNET_DISK_file_close(fd));
5966 GNUNET_free(hostkeys_file);
5969 for (off = 0; off < total; off++)
5973 hostname = pg->hosts[off % hostcnt].hostname;
5974 username = pg->hosts[off % hostcnt].username;
5975 sshport = pg->hosts[off % hostcnt].sshport;
5976 pcfg = make_config (cfg, off, &pg->hosts[off % hostcnt].minport,
5977 &upnum, hostname, &fdnum);
5984 pcfg = make_config (cfg, off, &minport, &upnum, hostname, &fdnum);
5989 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _
5990 ("Could not create configuration for peer number %u on `%s'!\n"),
5991 off, hostname == NULL ? "localhost" : hostname);
5996 == GNUNET_CONFIGURATION_get_value_string (pcfg, "PATHS",
6000 if (hostname != NULL)
6001 GNUNET_asprintf (&newservicehome, "%s/%s/%d/", baseservicehome, hostname, off);
6003 GNUNET_asprintf (&newservicehome, "%s/%d/", baseservicehome, off);
6004 #if !USE_START_HELPER
6005 GNUNET_free (baseservicehome);
6010 tmpdir = getenv ("TMPDIR");
6011 tmpdir = tmpdir ? tmpdir : "/tmp";
6012 if (hostname != NULL)
6013 GNUNET_asprintf (&newservicehome, "%s/%s/%s/%d/", tmpdir, hostname,
6014 "gnunet-testing-test-test", off);
6016 GNUNET_asprintf (&newservicehome, "%s/%s/%d/", tmpdir,
6017 "gnunet-testing-test-test", off);
6019 GNUNET_CONFIGURATION_set_value_string (pcfg, "PATHS", "SERVICEHOME",
6021 GNUNET_free (newservicehome);
6022 pg->peers[off].cfg = pcfg;
6023 pg->peers[off].pg = pg;
6024 pg->peers[off].internal_context.peer = &pg->peers[off];
6025 pg->peers[off].internal_context.timeout = timeout;
6026 pg->peers[off].internal_context.hostname = hostname;
6027 pg->peers[off].internal_context.username = username;
6028 pg->peers[off].internal_context.sshport = sshport;
6029 if (pg->hostkey_data != NULL)
6030 pg->peers[off].internal_context.hostkey = &pg->hostkey_data[off
6032 pg->peers[off].internal_context.hostkey_callback = hostkey_callback;
6033 pg->peers[off].internal_context.hostkey_cls = hostkey_cls;
6034 pg->peers[off].internal_context.start_cb = cb;
6035 pg->peers[off].internal_context.start_cb_cls = cb_cls;
6036 #if !USE_START_HELPER
6037 GNUNET_SCHEDULER_add_now (&internal_start,
6038 &pg->peers[off].internal_context);
6040 if ((pg->hostkey_data != NULL) && (hostcnt > 0))
6042 pg->peers[off].daemon = GNUNET_TESTING_daemon_start (pcfg,
6048 pg->peers[off].internal_context.hostkey,
6049 &internal_hostkey_callback,
6050 &pg->peers[off].internal_context,
6051 &internal_startup_callback,
6052 &pg->peers[off].internal_context);
6054 * At this point, given that we had a hostkeyfile,
6055 * we can call the hostkey callback!
6056 * But first, we should copy (rsync) all of the configs
6057 * and hostkeys to the remote peers. Then let topology
6058 * creation happen, then call the peer start helper processes,
6059 * then set pg->whatever_phase for each peer and let them
6060 * enter the fsm to get the HELLO's for peers and start connecting.
6065 GNUNET_SCHEDULER_add_now (&internal_start,
6066 &pg->peers[off].internal_context);
6072 #if USE_START_HELPER /* Now the peergroup has been set up, hostkeys and configs written to files. */
6073 if ((pg->hostkey_data != NULL) && (hostcnt > 0))
6075 for (off = 0; off < hostcnt; off++)
6077 GNUNET_asprintf(&newservicehome, "%s/%s/", baseservicehome, pg->hosts[off].hostname);
6079 if (NULL != username)
6080 GNUNET_asprintf (&arg, "%s@%s:%s/%s", username, pg->hosts[off].hostname, baseservicehome, pg->hosts[off].hostname);
6082 GNUNET_asprintf (&arg, "%s:%s/%s", pg->hosts[off].hostname, baseservicehome, pg->hosts[off].hostname);
6084 /* FIXME: Doesn't support ssh_port option! */
6085 proc = GNUNET_OS_start_process (NULL, NULL, "rsync", "rsync", "-r", newservicehome, arg, NULL);
6087 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "copying directory with command rsync -r %s %s\n", newservicehome, arg);
6093 GNUNET_ERROR_TYPE_ERROR,
6095 ("Could not start `%s' process to copy configuration directory.\n"),
6099 GNUNET_OS_process_wait (proc);
6100 GNUNET_OS_process_close (proc);
6102 /* Now all the configuration files and hostkeys are copied to the remote host. Call the hostkey callback for each peer! */
6103 GNUNET_SCHEDULER_add_now(&call_hostkey_callbacks, pg);
6105 GNUNET_free (baseservicehome);
6111 * Get a daemon by number, so callers don't have to do nasty
6112 * offsetting operation.
6114 struct GNUNET_TESTING_Daemon *
6115 GNUNET_TESTING_daemon_get(struct GNUNET_TESTING_PeerGroup *pg,
6116 unsigned int position)
6118 if (position < pg->total)
6119 return pg->peers[position].daemon;
6124 * Get a daemon by peer identity, so callers can
6125 * retrieve the daemon without knowing it's offset.
6127 * @param pg the peer group to retrieve the daemon from
6128 * @param peer_id the peer identity of the daemon to retrieve
6130 * @return the daemon on success, or NULL if no such peer identity is found
6132 struct GNUNET_TESTING_Daemon *
6133 GNUNET_TESTING_daemon_get_by_id(struct GNUNET_TESTING_PeerGroup *pg,
6134 struct GNUNET_PeerIdentity *peer_id)
6138 for (i = 0; i < pg->total; i++)
6140 if (0 == memcmp (&pg->peers[i].daemon->id, peer_id,
6141 sizeof(struct GNUNET_PeerIdentity)))
6142 return pg->peers[i].daemon;
6148 * Prototype of a function that will be called when a
6149 * particular operation was completed the testing library.
6151 * @param cls closure (a struct RestartContext)
6152 * @param id id of the peer that was restarted
6153 * @param cfg handle to the configuration of the peer
6154 * @param d handle to the daemon that was restarted
6155 * @param emsg NULL on success
6158 restart_callback(void *cls, const struct GNUNET_PeerIdentity *id,
6159 const struct GNUNET_CONFIGURATION_Handle *cfg,
6160 struct GNUNET_TESTING_Daemon *d, const char *emsg)
6162 struct RestartContext *restart_context = cls;
6166 restart_context->peers_restarted++;
6170 restart_context->peers_restart_failed++;
6173 if (restart_context->peers_restarted == restart_context->peer_group->total)
6175 restart_context->callback (restart_context->callback_cls, NULL);
6176 GNUNET_free (restart_context);
6178 else if (restart_context->peers_restart_failed
6179 + restart_context->peers_restarted == restart_context->peer_group->total)
6181 restart_context->callback (restart_context->callback_cls,
6182 "Failed to restart peers!");
6183 GNUNET_free (restart_context);
6189 * Callback for informing us about a successful
6190 * or unsuccessful churn stop call.
6192 * @param cls a ChurnContext
6193 * @param emsg NULL on success, non-NULL on failure
6197 churn_stop_callback(void *cls, const char *emsg)
6199 struct ShutdownContext *shutdown_ctx = cls;
6200 struct ChurnContext *churn_ctx = shutdown_ctx->cb_cls;
6201 unsigned int total_left;
6202 char *error_message;
6204 error_message = NULL;
6205 shutdown_ctx->outstanding--;
6209 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6210 "Churn stop callback failed with error `%s'\n", emsg);
6211 churn_ctx->num_failed_stop++;
6215 churn_ctx->num_to_stop--;
6219 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6220 "Stopped peer, %d left.\n", churn_ctx->num_to_stop);
6222 total_left = (churn_ctx->num_to_stop - churn_ctx->num_failed_stop)
6223 + (churn_ctx->num_to_start - churn_ctx->num_failed_start);
6225 if (total_left == 0)
6227 if ((churn_ctx->num_failed_stop > 0) || (churn_ctx->num_failed_start > 0))
6231 "Churn didn't complete successfully, %u peers failed to start %u peers failed to be stopped!",
6232 churn_ctx->num_failed_start,
6233 churn_ctx->num_failed_stop);
6235 churn_ctx->cb (churn_ctx->cb_cls, error_message);
6236 GNUNET_free_non_null (error_message);
6237 GNUNET_free (churn_ctx);
6238 GNUNET_free (shutdown_ctx);
6243 * Count the number of running peers.
6245 * @param pg handle for the peer group
6247 * @return the number of currently running peers in the peer group
6250 GNUNET_TESTING_daemons_running(struct GNUNET_TESTING_PeerGroup *pg)
6253 unsigned int running = 0;
6254 for (i = 0; i < pg->total; i++)
6256 if (pg->peers[i].daemon->running == GNUNET_YES)
6258 GNUNET_assert (running != -1);
6266 * Task to rate limit the number of outstanding peer shutdown
6267 * requests. This is necessary for making sure we don't do
6268 * too many ssh connections at once, but is generally nicer
6269 * to any system as well (graduated task starts, as opposed
6270 * to calling gnunet-arm N times all at once).
6273 schedule_churn_shutdown_task(void *cls,
6274 const struct GNUNET_SCHEDULER_TaskContext *tc)
6276 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6277 struct ShutdownContext *shutdown_ctx;
6278 struct ChurnContext *churn_ctx;
6279 GNUNET_assert (peer_shutdown_ctx != NULL);
6280 shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6281 GNUNET_assert (shutdown_ctx != NULL);
6282 churn_ctx = (struct ChurnContext *) shutdown_ctx->cb_cls;
6283 if (shutdown_ctx->outstanding > churn_ctx->pg->max_concurrent_ssh)
6284 GNUNET_SCHEDULER_add_delayed (
6285 GNUNET_TIME_relative_multiply (
6286 GNUNET_TIME_UNIT_MILLISECONDS,
6288 &schedule_churn_shutdown_task,
6292 shutdown_ctx->outstanding++;
6293 GNUNET_TESTING_daemon_stop (peer_shutdown_ctx->daemon,
6294 shutdown_ctx->timeout, shutdown_ctx->cb,
6295 shutdown_ctx, GNUNET_NO, GNUNET_YES);
6296 GNUNET_free (peer_shutdown_ctx);
6302 * Simulate churn by stopping some peers (and possibly
6303 * re-starting others if churn is called multiple times). This
6304 * function can only be used to create leave-join churn (peers "never"
6305 * leave for good). First "voff" random peers that are currently
6306 * online will be taken offline; then "von" random peers that are then
6307 * offline will be put back online. No notifications will be
6308 * generated for any of these operations except for the callback upon
6311 * @param pg handle for the peer group
6312 * @param voff number of peers that should go offline
6313 * @param von number of peers that should come back online;
6314 * must be zero on first call (since "testbed_start"
6315 * always starts all of the peers)
6316 * @param timeout how long to wait for operations to finish before
6318 * @param cb function to call at the end
6319 * @param cb_cls closure for cb
6322 GNUNET_TESTING_daemons_churn(struct GNUNET_TESTING_PeerGroup *pg,
6323 unsigned int voff, unsigned int von,
6324 struct GNUNET_TIME_Relative timeout,
6325 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6327 struct ChurnContext *churn_ctx;
6328 struct ShutdownContext *shutdown_ctx;
6329 struct PeerShutdownContext *peer_shutdown_ctx;
6330 struct PeerRestartContext *peer_restart_ctx;
6331 struct ChurnRestartContext *churn_startup_ctx;
6333 unsigned int running;
6334 unsigned int stopped;
6335 unsigned int total_running;
6336 unsigned int total_stopped;
6338 unsigned int *running_arr;
6339 unsigned int *stopped_arr;
6340 unsigned int *running_permute;
6341 unsigned int *stopped_permute;
6343 shutdown_ctx = NULL;
6344 peer_shutdown_ctx = NULL;
6345 peer_restart_ctx = NULL;
6346 churn_startup_ctx = NULL;
6351 if ((von == 0) && (voff == 0)) /* No peers at all? */
6357 for (i = 0; i < pg->total; i++)
6359 if (pg->peers[i].daemon->running == GNUNET_YES)
6361 GNUNET_assert (running != -1);
6366 GNUNET_assert (stopped != -1);
6373 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6374 "Trying to stop more peers than are currently running!\n");
6375 cb (cb_cls, "Trying to stop more peers than are currently running!");
6381 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
6382 "Trying to start more peers than are currently stopped!\n");
6383 cb (cb_cls, "Trying to start more peers than are currently stopped!");
6387 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6391 running_arr = GNUNET_malloc (running * sizeof (unsigned int));
6395 stopped_arr = GNUNET_malloc (stopped * sizeof (unsigned int));
6397 running_permute = NULL;
6398 stopped_permute = NULL;
6401 running_permute = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
6404 stopped_permute = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_WEAK,
6407 total_running = running;
6408 total_stopped = stopped;
6412 churn_ctx->num_to_start = von;
6413 churn_ctx->num_to_stop = voff;
6415 churn_ctx->cb_cls = cb_cls;
6418 for (i = 0; i < pg->total; i++)
6420 if (pg->peers[i].daemon->running == GNUNET_YES)
6422 GNUNET_assert ((running_arr != NULL) && (total_running > running));
6423 running_arr[running] = i;
6428 GNUNET_assert ((stopped_arr != NULL) && (total_stopped > stopped));
6429 stopped_arr[stopped] = i;
6434 GNUNET_assert (running >= voff);
6437 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6438 shutdown_ctx->cb = &churn_stop_callback;
6439 shutdown_ctx->cb_cls = churn_ctx;
6440 shutdown_ctx->total_peers = voff;
6441 shutdown_ctx->timeout = timeout;
6444 for (i = 0; i < voff; i++)
6447 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Stopping peer %d!\n",
6448 running_permute[i]);
6450 GNUNET_assert (running_arr != NULL);
6451 peer_shutdown_ctx = GNUNET_malloc (sizeof (struct PeerShutdownContext));
6452 peer_shutdown_ctx->daemon
6453 = pg->peers[running_arr[running_permute[i]]].daemon;
6454 peer_shutdown_ctx->shutdown_ctx = shutdown_ctx;
6455 GNUNET_SCHEDULER_add_now (&schedule_churn_shutdown_task,
6459 GNUNET_TESTING_daemon_stop (pg->peers[running_arr[running_permute[i]]].daemon,
6461 &churn_stop_callback, churn_ctx,
6462 GNUNET_NO, GNUNET_YES); */
6465 GNUNET_assert (stopped >= von);
6468 churn_startup_ctx = GNUNET_malloc (sizeof (struct ChurnRestartContext));
6469 churn_startup_ctx->churn_ctx = churn_ctx;
6470 churn_startup_ctx->timeout = timeout;
6471 churn_startup_ctx->pg = pg;
6473 for (i = 0; i < von; i++)
6476 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Starting up peer %d!\n",
6477 stopped_permute[i]);
6479 GNUNET_assert (stopped_arr != NULL);
6480 peer_restart_ctx = GNUNET_malloc (sizeof (struct PeerRestartContext));
6481 peer_restart_ctx->churn_restart_ctx = churn_startup_ctx;
6482 peer_restart_ctx->daemon
6483 = pg->peers[stopped_arr[stopped_permute[i]]].daemon;
6484 GNUNET_SCHEDULER_add_now (&schedule_churn_restart, peer_restart_ctx);
6486 GNUNET_TESTING_daemon_start_stopped(pg->peers[stopped_arr[stopped_permute[i]]].daemon,
6487 timeout, &churn_start_callback, churn_ctx); */
6490 GNUNET_free_non_null (running_arr);
6491 GNUNET_free_non_null (stopped_arr);
6492 GNUNET_free_non_null (running_permute);
6493 GNUNET_free_non_null (stopped_permute);
6498 * Restart all peers in the given group.
6500 * @param pg the handle to the peer group
6501 * @param callback function to call on completion (or failure)
6502 * @param callback_cls closure for the callback function
6505 GNUNET_TESTING_daemons_restart(struct GNUNET_TESTING_PeerGroup *pg,
6506 GNUNET_TESTING_NotifyCompletion callback,
6509 struct RestartContext *restart_context;
6514 restart_context = GNUNET_malloc (sizeof (struct RestartContext));
6515 restart_context->peer_group = pg;
6516 restart_context->peers_restarted = 0;
6517 restart_context->callback = callback;
6518 restart_context->callback_cls = callback_cls;
6520 for (off = 0; off < pg->total; off++)
6522 GNUNET_TESTING_daemon_restart (pg->peers[off].daemon,
6523 &restart_callback, restart_context);
6530 * Start or stop an individual peer from the given group.
6532 * @param pg handle to the peer group
6533 * @param offset which peer to start or stop
6534 * @param desired_status GNUNET_YES to have it running, GNUNET_NO to stop it
6535 * @param timeout how long to wait for shutdown
6536 * @param cb function to call at the end
6537 * @param cb_cls closure for cb
6540 GNUNET_TESTING_daemons_vary(struct GNUNET_TESTING_PeerGroup *pg,
6541 unsigned int offset, int desired_status,
6542 struct GNUNET_TIME_Relative timeout,
6543 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6545 struct ShutdownContext *shutdown_ctx;
6546 struct ChurnRestartContext *startup_ctx;
6547 struct ChurnContext *churn_ctx;
6549 if (GNUNET_NO == desired_status)
6551 if (NULL != pg->peers[offset].daemon)
6553 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6554 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6555 churn_ctx->num_to_start = 0;
6556 churn_ctx->num_to_stop = 1;
6558 churn_ctx->cb_cls = cb_cls;
6559 shutdown_ctx->cb_cls = churn_ctx;
6560 GNUNET_TESTING_daemon_stop (pg->peers[offset].daemon, timeout,
6561 &churn_stop_callback, shutdown_ctx,
6562 GNUNET_NO, GNUNET_YES);
6565 else if (GNUNET_YES == desired_status)
6567 if (NULL == pg->peers[offset].daemon)
6569 startup_ctx = GNUNET_malloc (sizeof (struct ChurnRestartContext));
6570 churn_ctx = GNUNET_malloc (sizeof (struct ChurnContext));
6571 churn_ctx->num_to_start = 1;
6572 churn_ctx->num_to_stop = 0;
6574 churn_ctx->cb_cls = cb_cls;
6575 startup_ctx->churn_ctx = churn_ctx;
6576 GNUNET_TESTING_daemon_start_stopped (pg->peers[offset].daemon,
6577 timeout, &churn_start_callback,
6587 * Callback for shutting down peers in a peer group.
6589 * @param cls closure (struct ShutdownContext)
6590 * @param emsg NULL on success
6593 internal_shutdown_callback(void *cls, const char *emsg)
6595 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6596 struct ShutdownContext *shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6598 struct OutstandingSSH *ssh_pos;
6600 shutdown_ctx->outstanding--;
6601 if (peer_shutdown_ctx->daemon->hostname != NULL)
6602 decrement_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6607 shutdown_ctx->peers_down++;
6611 shutdown_ctx->peers_failed++;
6614 if ((shutdown_ctx->cb != NULL) && (shutdown_ctx->peers_down
6615 + shutdown_ctx->peers_failed == shutdown_ctx->total_peers))
6617 if (shutdown_ctx->peers_failed > 0)
6618 shutdown_ctx->cb (shutdown_ctx->cb_cls,
6619 "Not all peers successfully shut down!");
6621 shutdown_ctx->cb (shutdown_ctx->cb_cls, NULL);
6623 GNUNET_free (shutdown_ctx->pg->peers);
6624 GNUNET_free_non_null(shutdown_ctx->pg->hostkey_data);
6625 for (off = 0; off < shutdown_ctx->pg->num_hosts; off++)
6627 GNUNET_free (shutdown_ctx->pg->hosts[off].hostname);
6628 GNUNET_free_non_null (shutdown_ctx->pg->hosts[off].username);
6630 GNUNET_free_non_null (shutdown_ctx->pg->hosts);
6631 while (NULL != (ssh_pos = shutdown_ctx->pg->ssh_head))
6633 GNUNET_CONTAINER_DLL_remove(shutdown_ctx->pg->ssh_head, shutdown_ctx->pg->ssh_tail, ssh_pos);
6634 GNUNET_free(ssh_pos);
6636 GNUNET_free (shutdown_ctx->pg);
6637 GNUNET_free (shutdown_ctx);
6639 GNUNET_free(peer_shutdown_ctx);
6644 * Task to rate limit the number of outstanding peer shutdown
6645 * requests. This is necessary for making sure we don't do
6646 * too many ssh connections at once, but is generally nicer
6647 * to any system as well (graduated task starts, as opposed
6648 * to calling gnunet-arm N times all at once).
6651 schedule_shutdown_task(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
6653 struct PeerShutdownContext *peer_shutdown_ctx = cls;
6654 struct ShutdownContext *shutdown_ctx;
6656 GNUNET_assert (peer_shutdown_ctx != NULL);
6657 shutdown_ctx = peer_shutdown_ctx->shutdown_ctx;
6658 GNUNET_assert (shutdown_ctx != NULL);
6660 if ((shutdown_ctx->outstanding < shutdown_ctx->pg->max_concurrent_ssh)
6661 || ((peer_shutdown_ctx->daemon->hostname != NULL)
6662 && (count_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6664 < shutdown_ctx->pg->max_concurrent_ssh)))
6666 if (peer_shutdown_ctx->daemon->hostname != NULL)
6667 increment_outstanding_at_host (peer_shutdown_ctx->daemon->hostname,
6669 shutdown_ctx->outstanding++;
6670 GNUNET_TESTING_daemon_stop (peer_shutdown_ctx->daemon,
6671 shutdown_ctx->timeout,
6672 &internal_shutdown_callback, peer_shutdown_ctx,
6673 GNUNET_YES, GNUNET_NO);
6676 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS,
6678 &schedule_shutdown_task, peer_shutdown_ctx);
6684 * Shutdown all peers started in the given group.
6686 * @param pg handle to the peer group
6687 * @param timeout how long to wait for shutdown
6688 * @param cb callback to notify upon success or failure
6689 * @param cb_cls closure for cb
6692 GNUNET_TESTING_daemons_stop(struct GNUNET_TESTING_PeerGroup *pg,
6693 struct GNUNET_TIME_Relative timeout,
6694 GNUNET_TESTING_NotifyCompletion cb, void *cb_cls)
6697 struct ShutdownContext *shutdown_ctx;
6698 struct PeerShutdownContext *peer_shutdown_ctx;
6700 struct PeerConnection *conn_iter;
6701 struct PeerConnection *temp_conn;
6704 GNUNET_assert (pg->total > 0);
6706 shutdown_ctx = GNUNET_malloc (sizeof (struct ShutdownContext));
6707 shutdown_ctx->cb = cb;
6708 shutdown_ctx->cb_cls = cb_cls;
6709 shutdown_ctx->total_peers = pg->total;
6710 shutdown_ctx->timeout = timeout;
6711 shutdown_ctx->pg = pg;
6712 /* shtudown_ctx->outstanding = 0; */
6714 for (off = 0; off < pg->total; off++)
6716 GNUNET_assert (NULL != pg->peers[off].daemon);
6717 peer_shutdown_ctx = GNUNET_malloc (sizeof (struct PeerShutdownContext));
6718 peer_shutdown_ctx->daemon = pg->peers[off].daemon;
6719 peer_shutdown_ctx->shutdown_ctx = shutdown_ctx;
6720 GNUNET_SCHEDULER_add_now (&schedule_shutdown_task, peer_shutdown_ctx);
6722 if (NULL != pg->peers[off].cfg)
6724 GNUNET_CONFIGURATION_destroy (pg->peers[off].cfg);
6725 pg->peers[off].cfg = NULL;
6728 conn_iter = pg->peers[off].allowed_peers_head;
6729 while (conn_iter != NULL)
6731 temp_conn = conn_iter->next;
6732 GNUNET_free(conn_iter);
6733 conn_iter = temp_conn;
6736 conn_iter = pg->peers[off].connect_peers_head;
6737 while (conn_iter != NULL)
6739 temp_conn = conn_iter->next;
6740 GNUNET_free(conn_iter);
6741 conn_iter = temp_conn;
6744 conn_iter = pg->peers[off].blacklisted_peers_head;
6745 while (conn_iter != NULL)
6747 temp_conn = conn_iter->next;
6748 GNUNET_free(conn_iter);
6749 conn_iter = temp_conn;
6752 conn_iter = pg->peers[off].connect_peers_working_set_head;
6753 while (conn_iter != NULL)
6755 temp_conn = conn_iter->next;
6756 GNUNET_free(conn_iter);
6757 conn_iter = temp_conn;
6760 if (pg->peers[off].allowed_peers != NULL)
6761 GNUNET_CONTAINER_multihashmap_destroy (pg->peers[off].allowed_peers);
6762 if (pg->peers[off].connect_peers != NULL)
6763 GNUNET_CONTAINER_multihashmap_destroy (pg->peers[off].connect_peers);
6764 if (pg->peers[off].blacklisted_peers != NULL)
6765 GNUNET_CONTAINER_multihashmap_destroy (pg->
6766 peers[off].blacklisted_peers);
6771 /* end of testing_group.c */