src/testing/test_testing_topology.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009 Christian Grothoff (and other contributing authors)
   4
   5      GNUnet is free software; you can redistribute it and/or modify
   6      it under the terms of the GNU General Public License as published
   7      by the Free Software Foundation; either version 2, or (at your
   8      option) any later version.
   9
  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.
  14
  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.
  19 */
  20 /**
  21  * @file testing/test_testing_topology.c
  22  * @brief base testcase for testing all the topologies provided
  23  */
  24 #include "platform.h"
  25 #include "gnunet_testing_lib.h"
  26 #include "gnunet_core_service.h"
  27
  28 #define VERBOSE GNUNET_NO
  29
  30 /**
  31  * How long until we fail the whole testcase?
  32  */
  33 #define TEST_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 600)
  34
  35 /**
  36  * How long until we give up on starting the peers?
  37  */
  38 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 500)
  39
  40 #define DEFAULT_NUM_PEERS 4
  41
  42 #define MAX_OUTSTANDING_CONNECTIONS 300
  43
  44 static float fail_percentage = 0.05;
  45
  46 static int ok;
  47
  48 static unsigned long long num_peers;
  49
  50 static unsigned int total_connections;
  51
  52 static unsigned int failed_connections;
  53
  54 static unsigned int total_server_connections;
  55
  56 static unsigned int total_messages_received;
  57
  58 static unsigned int expected_messages;
  59
  60 static unsigned int expected_connections;
  61
  62 static unsigned long long peers_left;
  63
  64 static struct GNUNET_TESTING_PeerGroup *pg;
  65
  66 static struct GNUNET_SCHEDULER_Handle *sched;
  67
  68 const struct GNUNET_CONFIGURATION_Handle *main_cfg;
  69
  70 GNUNET_SCHEDULER_TaskIdentifier die_task;
  71
  72 static char *dotOutFileName;
  73
  74 static FILE *dotOutFile;
  75
  76 static char *topology_string;
  77
  78 static char *blacklist_transports;
  79
  80 static int transmit_ready_scheduled;
  81
  82 static int transmit_ready_failed;
  83
  84 static int transmit_ready_called;
  85
  86 static enum GNUNET_TESTING_Topology topology;
  87
  88 static enum GNUNET_TESTING_Topology blacklist_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* Don't do any blacklisting */
  89
  90 static enum GNUNET_TESTING_Topology connection_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* NONE actually means connect all allowed peers */
  91
  92 static enum GNUNET_TESTING_TopologyOption connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL;
  93
  94 static double connect_topology_option_modifier = 0.0;
  95
  96 static char *test_directory;
  97
  98 #define MTYPE 12345
  99
 100 struct GNUNET_TestMessage
 101 {
 102   /**
 103    * Header of the message
 104    */
 105   struct GNUNET_MessageHeader header;
 106
 107   /**
 108    * Unique identifier for this message.
 109    */
 110   uint32_t uid;
 111 };
 112
 113 struct TestMessageContext
 114 {
 115   /* This is a linked list */
 116   struct TestMessageContext *next;
 117
 118   /* Handle to the sending peer core */
 119   struct GNUNET_CORE_Handle *peer1handle;
 120
 121   /* Handle to the receiving peer core */
 122   struct GNUNET_CORE_Handle *peer2handle;
 123
 124   /* Handle to the sending peer daemon */
 125   struct GNUNET_TESTING_Daemon *peer1;
 126
 127   /* Handle to the receiving peer daemon */
 128   struct GNUNET_TESTING_Daemon *peer2;
 129
 130   /* Identifier for this message, so we don't disconnect other peers! */
 131   uint32_t uid;
 132
 133   /* Task for disconnecting cores, allow task to be cancelled on shutdown */
 134   GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 135
 136 };
 137
 138 static struct TestMessageContext *test_messages;
 139
 140 static void
 141 finish_testing ()
 142 {
 143   GNUNET_assert (pg != NULL);
 144   struct TestMessageContext *pos;
 145   struct TestMessageContext *free_pos;
 146 #if VERBOSE
 147   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 148               "Called finish testing, stopping daemons.\n");
 149 #endif
 150   int count;
 151   count = 0;
 152   pos = test_messages;
 153   while (pos != NULL)
 154     {
 155       if (pos->peer1handle != NULL)
 156         {
 157           GNUNET_CORE_disconnect(pos->peer1handle);
 158           pos->peer1handle = NULL;
 159         }
 160       if (pos->peer2handle != NULL)
 161         {
 162           GNUNET_CORE_disconnect(pos->peer2handle);
 163           pos->peer2handle = NULL;
 164         }
 165       free_pos = pos;
 166       pos = pos->next;
 167       if (free_pos->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 168         {
 169           GNUNET_SCHEDULER_cancel(sched, free_pos->disconnect_task);
 170         }
 171       GNUNET_free(free_pos);
 172     }
 173 #if VERBOSE
 174           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 175                       "transmit_ready's scheduled %d, failed %d, transmit_ready's called %d\n", transmit_ready_scheduled, transmit_ready_failed, transmit_ready_called);
 176 #endif
 177
 178 #if VERBOSE
 179           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 180                       "Calling daemons_stop\n");
 181 #endif
 182   GNUNET_TESTING_daemons_stop (pg, TIMEOUT);
 183 #if VERBOSE
 184           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 185                       "daemons_stop finished\n");
 186 #endif
 187   if (dotOutFile != NULL)
 188     {
 189       fprintf(dotOutFile, "}");
 190       fclose(dotOutFile);
 191     }
 192
 193   ok = 0;
 194 }
 195
 196
 197 static void
 198 disconnect_cores (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 199 {
 200   struct TestMessageContext *pos = cls;
 201
 202   /* Disconnect from the respective cores */
 203 #if VERBOSE
 204   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 205               "Disconnecting from peer 1 `%4s'\n", GNUNET_i2s (&pos->peer1->id));
 206 #endif
 207   if (pos->peer1handle != NULL)
 208     GNUNET_CORE_disconnect(pos->peer1handle);
 209 #if VERBOSE
 210   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 211               "Disconnecting from peer 2 `%4s'\n", GNUNET_i2s (&pos->peer2->id));
 212 #endif
 213   if (pos->peer2handle != NULL)
 214     GNUNET_CORE_disconnect(pos->peer2handle);
 215   /* Set handles to NULL so test case can be ended properly */
 216   pos->peer1handle = NULL;
 217   pos->peer2handle = NULL;
 218   pos->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 219   /* Decrement total connections so new can be established */
 220   total_server_connections -= 2;
 221 }
 222
 223 static int
 224 process_mtype (void *cls,
 225                const struct GNUNET_PeerIdentity *peer,
 226                const struct GNUNET_MessageHeader *message,
 227                struct GNUNET_TIME_Relative latency,
 228                uint32_t distance)
 229 {
 230   struct TestMessageContext *pos = cls;
 231   struct GNUNET_TestMessage *msg = (struct GNUNET_TestMessage *)message;
 232   if (pos->uid != ntohl(msg->uid))
 233     return GNUNET_OK;
 234
 235   total_messages_received++;
 236 #if VERBOSE
 237   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 238               "Received message from `%4s', type %d.\n", GNUNET_i2s (peer), ntohs(message->type));
 239   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 240               "Total messages received %d, expected %d.\n", total_messages_received, expected_messages);
 241 #endif
 242
 243   if (total_messages_received == expected_messages)
 244     {
 245       GNUNET_SCHEDULER_cancel (sched, die_task);
 246       GNUNET_SCHEDULER_add_now (sched, &finish_testing, NULL);
 247     }
 248   else
 249     {
 250       pos->disconnect_task = GNUNET_SCHEDULER_add_now(sched, &disconnect_cores, pos);
 251     }
 252
 253   return GNUNET_OK;
 254 }
 255
 256 static void
 257 end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 258 {
 259   char *msg = cls;
 260   GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 261               "End badly was called (%s)... stopping daemons.\n", msg);
 262   struct TestMessageContext *pos;
 263   struct TestMessageContext *free_pos;
 264
 265   pos = test_messages;
 266   while (pos != NULL)
 267     {
 268       if (pos->peer1handle != NULL)
 269         {
 270           GNUNET_CORE_disconnect(pos->peer1handle);
 271           pos->peer1handle = NULL;
 272         }
 273       if (pos->peer2handle != NULL)
 274         {
 275           GNUNET_CORE_disconnect(pos->peer2handle);
 276           pos->peer2handle = NULL;
 277         }
 278       free_pos = pos;
 279       pos = pos->next;
 280       GNUNET_free(free_pos);
 281     }
 282
 283   if (pg != NULL)
 284     {
 285       GNUNET_TESTING_daemons_stop (pg, TIMEOUT);
 286       ok = 7331;                /* Opposite of leet */
 287     }
 288   else
 289     ok = 401;                   /* Never got peers started */
 290
 291   if (dotOutFile != NULL)
 292     {
 293       fprintf(dotOutFile, "}");
 294       fclose(dotOutFile);
 295     }
 296 }
 297
 298
 299
 300 static size_t
 301 transmit_ready (void *cls, size_t size, void *buf)
 302 {
 303   struct GNUNET_TestMessage *m;
 304   struct TestMessageContext *pos = cls;
 305
 306   GNUNET_assert (buf != NULL);
 307   m = (struct GNUNET_TestMessage *) buf;
 308   m->header.type = htons (MTYPE);
 309   m->header.size = htons (sizeof (struct GNUNET_TestMessage));
 310   m->uid = htonl(pos->uid);
 311   transmit_ready_called++;
 312 #if VERBOSE
 313   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 314               "transmit ready for peer %s\ntransmit_ready's scheduled %d, transmit_ready's called %d\n", GNUNET_i2s(&pos->peer1->id), transmit_ready_scheduled, transmit_ready_called);
 315 #endif
 316   return sizeof (struct GNUNET_TestMessage);
 317 }
 318
 319
 320 static struct GNUNET_CORE_MessageHandler no_handlers[] = {
 321   {NULL, 0, 0}
 322 };
 323
 324 static struct GNUNET_CORE_MessageHandler handlers[] = {
 325   {&process_mtype, MTYPE, sizeof (struct GNUNET_TestMessage)},
 326   {NULL, 0, 0}
 327 };
 328
 329 static void
 330 init_notify_peer2 (void *cls,
 331              struct GNUNET_CORE_Handle *server,
 332              const struct GNUNET_PeerIdentity *my_identity,
 333              const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *publicKey)
 334 {
 335   struct TestMessageContext *pos = cls;
 336
 337 #if VERBOSE
 338   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 339               "Core connection to `%4s' established, scheduling message send\n",
 340               GNUNET_i2s (my_identity));
 341 #endif
 342   total_server_connections++;
 343
 344   if (NULL == GNUNET_CORE_notify_transmit_ready (pos->peer1handle,
 345                                                  0,
 346                                                  TIMEOUT,
 347                                                  &pos->peer2->id,
 348                                                  sizeof (struct GNUNET_TestMessage),
 349                                                  &transmit_ready, pos))
 350     {
 351       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 352                   "RECEIVED NULL when asking core (1) for transmission to peer `%4s'\n",
 353                   GNUNET_i2s (&pos->peer2->id));
 354       transmit_ready_failed++;
 355     }
 356   else
 357     {
 358       transmit_ready_scheduled++;
 359     }
 360 }
 361
 362
 363 static void
 364 init_notify_peer1 (void *cls,
 365              struct GNUNET_CORE_Handle *server,
 366              const struct GNUNET_PeerIdentity *my_identity,
 367              const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *publicKey)
 368 {
 369   struct TestMessageContext *pos = cls;
 370   total_server_connections++;
 371
 372 #if VERBOSE
 373   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 374               "Core connection to `%4s' established, setting up handles\n",
 375               GNUNET_i2s (my_identity));
 376 #endif
 377
 378   /*
 379    * Connect to the receiving peer
 380    */
 381   pos->peer2handle = GNUNET_CORE_connect (sched,
 382                        pos->peer2->cfg,
 383                        TIMEOUT,
 384                        pos,
 385                        &init_notify_peer2,
 386                        NULL,
 387                        NULL,
 388                        NULL,
 389                        GNUNET_YES, NULL, GNUNET_YES, handlers);
 390
 391 }
 392
 393
 394 static void
 395 send_test_messages (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 396 {
 397   struct TestMessageContext *pos = cls;
 398
 399   if ((tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN) || (cls == NULL))
 400     return;
 401
 402   if (die_task == GNUNET_SCHEDULER_NO_TASK)
 403     {
 404       die_task = GNUNET_SCHEDULER_add_delayed (sched,
 405                                                TEST_TIMEOUT,
 406                                                &end_badly, "from create topology (timeout)");
 407     }
 408
 409   if (total_server_connections >= MAX_OUTSTANDING_CONNECTIONS)
 410     {
 411       GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1),
 412                                     &send_test_messages, pos);
 413       return; /* Otherwise we'll double schedule messages here! */
 414     }
 415
 416   /*
 417    * Connect to the sending peer
 418    */
 419   pos->peer1handle = GNUNET_CORE_connect (sched,
 420                                           pos->peer1->cfg,
 421                                           TIMEOUT,
 422                                           pos,
 423                                           &init_notify_peer1,
 424                                           NULL,
 425                                           NULL,
 426                                           NULL,
 427                                           GNUNET_NO, NULL, GNUNET_NO, no_handlers);
 428
 429   GNUNET_assert(pos->peer1handle != NULL);
 430
 431   if (total_server_connections < MAX_OUTSTANDING_CONNECTIONS)
 432     {
 433       GNUNET_SCHEDULER_add_now (sched,
 434                                 &send_test_messages, pos->next);
 435     }
 436   else
 437     {
 438       GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 1),
 439                                     &send_test_messages, pos->next);
 440     }
 441 }
 442
 443
 444 void
 445 topology_callback (void *cls,
 446                    const struct GNUNET_PeerIdentity *first,
 447                    const struct GNUNET_PeerIdentity *second,
 448                    const struct GNUNET_CONFIGURATION_Handle *first_cfg,
 449                    const struct GNUNET_CONFIGURATION_Handle *second_cfg,
 450                    struct GNUNET_TESTING_Daemon *first_daemon,
 451                    struct GNUNET_TESTING_Daemon *second_daemon,
 452                    const char *emsg)
 453 {
 454   struct TestMessageContext *temp_context;
 455   if (emsg == NULL)
 456     {
 457       total_connections++;
 458 #if VERBOSE
 459       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "connected peer %s to peer %s\n",
 460                first_daemon->shortname,
 461                second_daemon->shortname);
 462 #endif
 463       temp_context = GNUNET_malloc(sizeof(struct TestMessageContext));
 464       temp_context->peer1 = first_daemon;
 465       temp_context->peer2 = second_daemon;
 466       temp_context->next = test_messages;
 467       temp_context->uid = total_connections;
 468       temp_context->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 469       test_messages = temp_context;
 470
 471       expected_messages++;
 472       if (dotOutFile != NULL)
 473         fprintf(dotOutFile, "\tn%s -- n%s;\n", first_daemon->shortname, second_daemon->shortname);
 474     }
 475 #if VERBOSE
 476   else
 477     {
 478       failed_connections++;
 479       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to connect peer %s to peer %s with error :\n%s\n",
 480                first_daemon->shortname,
 481                second_daemon->shortname, emsg);
 482     }
 483 #endif
 484
 485   if (total_connections == expected_connections)
 486     {
 487 #if VERBOSE
 488       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 489                   "Created %d total connections, which is our target number!  Calling send messages.\n",
 490                   total_connections);
 491 #endif
 492
 493       GNUNET_SCHEDULER_cancel (sched, die_task);
 494       die_task = GNUNET_SCHEDULER_NO_TASK;
 495       GNUNET_SCHEDULER_add_now (sched, &send_test_messages, test_messages);
 496       //GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1), &send_test_messages, test_messages);
 497     }
 498   else if (total_connections + failed_connections == expected_connections)
 499     {
 500       if (failed_connections < (unsigned int)(fail_percentage * total_connections))
 501         {
 502           GNUNET_SCHEDULER_cancel (sched, die_task);
 503           die_task = GNUNET_SCHEDULER_NO_TASK;
 504           GNUNET_SCHEDULER_add_now (sched, &send_test_messages, test_messages);
 505           //GNUNET_SCHEDULER_add_delayed (sched, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1), &send_test_messages, test_messages);
 506         }
 507       else
 508         {
 509           GNUNET_SCHEDULER_cancel (sched, die_task);
 510           die_task = GNUNET_SCHEDULER_add_now (sched,
 511                                                &end_badly, "from topology_callback (too many failed connections)");
 512         }
 513     }
 514   else
 515     {
 516 #if VERBOSE
 517       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 518                   "Have %d total connections, %d failed connections, Want %d (at least %d)\n",
 519                   total_connections, failed_connections, expected_connections, expected_connections - (unsigned int)(fail_percentage * expected_connections));
 520 #endif
 521     }
 522 }
 523
 524 static void
 525 connect_topology ()
 526 {
 527   expected_connections = -1;
 528   if ((pg != NULL) && (peers_left == 0))
 529     {
 530       expected_connections = GNUNET_TESTING_connect_topology (pg, connection_topology, connect_topology_option, connect_topology_option_modifier);
 531 #if VERBOSE
 532       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 533                   "Have %d expected connections\n", expected_connections);
 534 #endif
 535     }
 536
 537   GNUNET_SCHEDULER_cancel (sched, die_task);
 538   if (expected_connections == GNUNET_SYSERR)
 539     {
 540       die_task = GNUNET_SCHEDULER_add_now (sched,
 541                                            &end_badly, "from connect topology (bad return)");
 542     }
 543
 544   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 545                                            TEST_TIMEOUT,
 546                                            &end_badly, "from connect topology (timeout)");
 547 }
 548
 549 static void
 550 create_topology ()
 551 {
 552   peers_left = num_peers; /* Reset counter */
 553   if (GNUNET_TESTING_create_topology (pg, topology, blacklist_topology, blacklist_transports) != GNUNET_SYSERR)
 554     {
 555 #if VERBOSE
 556       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 557                   "Topology set up, now starting peers!\n");
 558 #endif
 559       GNUNET_TESTING_daemons_continue_startup(pg);
 560     }
 561   else
 562     {
 563       GNUNET_SCHEDULER_cancel (sched, die_task);
 564       die_task = GNUNET_SCHEDULER_add_now (sched,
 565                                            &end_badly, "from create topology (bad return)");
 566     }
 567   GNUNET_SCHEDULER_cancel (sched, die_task);
 568   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 569                                            TEST_TIMEOUT,
 570                                            &end_badly, "from continue startup (timeout)");
 571 }
 572
 573
 574 static void
 575 peers_started_callback (void *cls,
 576        const struct GNUNET_PeerIdentity *id,
 577        const struct GNUNET_CONFIGURATION_Handle *cfg,
 578        struct GNUNET_TESTING_Daemon *d, const char *emsg)
 579 {
 580   if (emsg != NULL)
 581     {
 582       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to start daemon with error: `%s'\n",
 583                   emsg);
 584       return;
 585     }
 586   GNUNET_assert (id != NULL);
 587 #if VERBOSE
 588   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Started daemon %llu out of %llu\n",
 589               (num_peers - peers_left) + 1, num_peers);
 590 #endif
 591   peers_left--;
 592   if (peers_left == 0)
 593     {
 594 #if VERBOSE
 595       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 596                   "All %d daemons started, now creating topology!\n",
 597                   num_peers);
 598 #endif
 599       GNUNET_SCHEDULER_cancel (sched, die_task);
 600       /* Set up task in case topology creation doesn't finish
 601        * within a reasonable amount of time */
 602       die_task = GNUNET_SCHEDULER_add_delayed (sched,
 603                                                GNUNET_TIME_relative_multiply
 604                                                (GNUNET_TIME_UNIT_MINUTES, 5),
 605                                                &end_badly, "from peers_started_callback");
 606
 607       connect_topology ();
 608       ok = 0;
 609     }
 610 }
 611
 612 /**
 613  * Callback indicating that the hostkey was created for a peer.
 614  *
 615  * @param cls NULL
 616  * @param id the peer identity
 617  * @param d the daemon handle (pretty useless at this point, remove?)
 618  * @param emsg non-null on failure
 619  */
 620 void hostkey_callback (void *cls,
 621                        const struct GNUNET_PeerIdentity *id,
 622                        struct GNUNET_TESTING_Daemon *d,
 623                        const char *emsg)
 624 {
 625   if (emsg != NULL)
 626     {
 627       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Hostkey callback received error: %s\n", emsg);
 628     }
 629
 630 #if VERBOSE
 631     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 632                 "Hostkey created for peer `%s'\n",
 633                 GNUNET_i2s(id));
 634 #endif
 635     peers_left--;
 636     if (peers_left == 0)
 637       {
 638 #if VERBOSE
 639         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 640                     "All %d hostkeys created, now creating topology!\n",
 641                     num_peers);
 642 #endif
 643         GNUNET_SCHEDULER_cancel (sched, die_task);
 644         /* Set up task in case topology creation doesn't finish
 645          * within a reasonable amount of time */
 646         die_task = GNUNET_SCHEDULER_add_delayed (sched,
 647                                                  GNUNET_TIME_relative_multiply
 648                                                  (GNUNET_TIME_UNIT_MINUTES, 5),
 649                                                  &end_badly, "from hostkey_callback");
 650         GNUNET_SCHEDULER_add_now(sched, &create_topology, NULL);
 651         ok = 0;
 652       }
 653 }
 654
 655 static void
 656 run (void *cls,
 657      struct GNUNET_SCHEDULER_Handle *s,
 658      char *const *args,
 659      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 660 {
 661   char * topology_str;
 662   char * connect_topology_str;
 663   char * blacklist_topology_str;
 664   char * connect_topology_option_str;
 665   char * connect_topology_option_modifier_string;
 666   sched = s;
 667   ok = 1;
 668
 669   dotOutFile = fopen (dotOutFileName, "w");
 670   if (dotOutFile != NULL)
 671     {
 672       fprintf (dotOutFile, "strict graph G {\n");
 673     }
 674
 675 #if VERBOSE
 676   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 677               "Starting daemons based on config file %s\n", cfgfile);
 678 #endif
 679
 680   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
 681     {
 682       ok = 404;
 683       return;
 684     }
 685
 686   if ((GNUNET_YES ==
 687       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "topology",
 688                                             &topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&topology, topology_str)))
 689     {
 690       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 691                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "TOPOLOGY");
 692       topology = GNUNET_TESTING_TOPOLOGY_CLIQUE; /* Defaults to NONE, so set better default here */
 693     }
 694
 695   if ((GNUNET_YES ==
 696       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology",
 697                                             &connect_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&connection_topology, connect_topology_str)))
 698     {
 699       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 700                   "Invalid connect topology `%s' given for section %s option %s\n", connect_topology_str, "TESTING", "CONNECT_TOPOLOGY");
 701     }
 702
 703   if ((GNUNET_YES ==
 704       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology_option",
 705                                             &connect_topology_option_str)) && (GNUNET_NO == GNUNET_TESTING_topology_option_get(&connect_topology_option, connect_topology_option_str)))
 706     {
 707       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 708                   "Invalid connect topology option `%s' given for section %s option %s\n", connect_topology_option_str, "TESTING", "CONNECT_TOPOLOGY_OPTION");
 709       connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL; /* Defaults to NONE, set to ALL */
 710     }
 711
 712   if (GNUNET_YES ==
 713         GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "connect_topology_option_modifier",
 714                                                &connect_topology_option_modifier_string))
 715     {
 716       if (sscanf(connect_topology_option_modifier_string, "%lf", &connect_topology_option_modifier) != 1)
 717       {
 718         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 719         _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
 720         connect_topology_option_modifier_string,
 721         "connect_topology_option_modifier",
 722         "TESTING");
 723       }
 724       GNUNET_free (connect_topology_option_modifier_string);
 725     }
 726
 727   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "blacklist_transports",
 728                                          &blacklist_transports))
 729     blacklist_transports = NULL;
 730
 731   if ((GNUNET_YES ==
 732       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "blacklist_topology",
 733                                             & blacklist_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&blacklist_topology, blacklist_topology_str)))
 734     {
 735       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 736                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "BLACKLIST_TOPOLOGY");
 737     }
 738
 739   if (GNUNET_SYSERR ==
 740       GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
 741                                              &num_peers))
 742     num_peers = DEFAULT_NUM_PEERS;
 743
 744   main_cfg = cfg;
 745
 746   peers_left = num_peers;
 747
 748   /* Set up a task to end testing if peer start fails */
 749   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 750                                            GNUNET_TIME_relative_multiply
 751                                            (GNUNET_TIME_UNIT_MINUTES, 5),
 752                                            &end_badly, "didn't start all daemons in reasonable amount of time!!!");
 753
 754   pg = GNUNET_TESTING_daemons_start (sched, cfg,
 755                                      peers_left, TIMEOUT, &hostkey_callback, NULL, &peers_started_callback, NULL,
 756                                      &topology_callback, NULL, NULL);
 757
 758 }
 759
 760 static int
 761 check ()
 762 {
 763   char *binary_name;
 764   char *config_file_name;
 765   GNUNET_asprintf(&binary_name, "test-testing-topology-%s", topology_string);
 766   GNUNET_asprintf(&config_file_name, "test_testing_data_topology_%s.conf", topology_string);
 767   int ret;
 768   char *const argv[] = {binary_name,
 769     "-c",
 770     config_file_name,
 771 #if VERBOSE
 772     "-L", "DEBUG",
 773 #endif
 774     NULL
 775   };
 776   struct GNUNET_GETOPT_CommandLineOption options[] = {
 777     GNUNET_GETOPT_OPTION_END
 778   };
 779   ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 780                       argv, binary_name, "nohelp",
 781                       options, &run, &ok);
 782   if (ret != GNUNET_OK)
 783     {
 784       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-testing-topology-%s': Failed with error code %d\n", topology_string, ret);
 785     }
 786   GNUNET_free(binary_name);
 787   GNUNET_free(config_file_name);
 788   return ok;
 789 }
 790
 791 int
 792 main (int argc, char *argv[])
 793 {
 794   int ret;
 795   char *binary_start_pos;
 796   char *our_binary_name;
 797
 798   binary_start_pos = rindex(argv[0], '/');
 799   topology_string = strstr (binary_start_pos,
 800                             "_topology");
 801   GNUNET_assert (topology_string != NULL);
 802   topology_string++;
 803   topology_string = strstr (topology_string, "_");
 804   GNUNET_assert (topology_string != NULL);
 805   topology_string++;
 806
 807   GNUNET_asprintf(&our_binary_name, "test-testing-topology_%s", topology_string);
 808   GNUNET_asprintf(&dotOutFileName, "topology_%s.dot", topology_string);
 809
 810   GNUNET_log_setup (our_binary_name,
 811 #if VERBOSE
 812                     "DEBUG",
 813 #else
 814                     "WARNING",
 815 #endif
 816                     NULL);
 817   ret = check ();
 818
 819   /**
 820    * Need to remove base directory, subdirectories taken care
 821    * of by the testing framework.
 822    */
 823   if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
 824     {
 825       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
 826     }
 827   GNUNET_free(our_binary_name);
 828   return ret;
 829 }
 830
 831 /* end of test_testing_topology.c */