src/dht/test_dht_multipeer.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 3, 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 dht/test_dht_multipeer.c
  22  * @brief testcase for testing DHT service with
  23  *        multiple peers.
  24  */
  25 #include "platform.h"
  26 #include "gnunet_testing_lib.h"
  27 #include "gnunet_core_service.h"
  28 #include "gnunet_dht_service.h"
  29
  30 /* DEFINES */
  31 #define VERBOSE GNUNET_NO
  32
  33 /* Timeout for entire testcase */
  34 #define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5)
  35
  36 /* Timeout for waiting for replies to get requests */
  37 #define GET_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 90)
  38
  39 /* Timeout for waiting for gets to complete */
  40 #define GET_DELAY GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1)
  41
  42 /* Timeout for waiting for puts to complete */
  43 #define PUT_DELAY GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 1)
  44
  45 #define SECONDS_PER_PEER_START 45
  46
  47 /* If number of peers not in config file, use this number */
  48 #define DEFAULT_NUM_PEERS 5
  49
  50 #define TEST_DATA_SIZE 8
  51
  52 #define MAX_OUTSTANDING_PUTS 10
  53
  54 #define MAX_OUTSTANDING_GETS 10
  55
  56 /* Structs */
  57
  58 struct TestPutContext
  59 {
  60   /**
  61    * This is a linked list
  62    */
  63   struct TestPutContext *next;
  64
  65   /**
  66    * Handle to the first peers DHT service (via the API)
  67    */
  68   struct GNUNET_DHT_Handle *dht_handle;
  69
  70   /**
  71    *  Handle to the PUT peer daemon
  72    */
  73   struct GNUNET_TESTING_Daemon *daemon;
  74
  75   /**
  76    *  Identifier for this PUT
  77    */
  78   uint32_t uid;
  79
  80   /**
  81    * Task for disconnecting DHT handles
  82    */
  83   GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
  84 };
  85
  86 struct TestGetContext
  87 {
  88   /* This is a linked list */
  89   struct TestGetContext *next;
  90
  91   /**
  92    * Handle to the first peers DHT service (via the API)
  93    */
  94   struct GNUNET_DHT_Handle *dht_handle;
  95
  96   /**
  97    * Handle for the DHT get request
  98    */
  99   struct GNUNET_DHT_GetHandle *get_handle;
 100
 101   /**
 102    *  Handle to the GET peer daemon
 103    */
 104   struct GNUNET_TESTING_Daemon *daemon;
 105
 106   /**
 107    *  Identifier for this GET
 108    */
 109   uint32_t uid;
 110
 111   /**
 112    * Task for disconnecting DHT handles (and stopping GET)
 113    */
 114   GNUNET_SCHEDULER_TaskIdentifier disconnect_task;
 115
 116   /**
 117    * Whether or not this request has been fulfilled already.
 118    */
 119   int succeeded;
 120 };
 121
 122 /* Globals */
 123
 124 /**
 125  * List of GETS to perform
 126  */
 127 struct TestGetContext *all_gets;
 128
 129 /**
 130  * List of PUTS to perform
 131  */
 132 struct TestPutContext *all_puts;
 133
 134 /**
 135  * Directory to store temp data in, defined in config file
 136  */
 137 static char *test_directory;
 138
 139 /**
 140  * Variable used to store the number of connections we should wait for.
 141  */
 142 static unsigned int expected_connections;
 143
 144 /**
 145  * Variable used to keep track of how many peers aren't yet started.
 146  */
 147 static unsigned long long peers_left;
 148
 149 /**
 150  * Handle to the set of all peers run for this test.
 151  */
 152 static struct GNUNET_TESTING_PeerGroup *pg;
 153
 154
 155 /**
 156  * Total number of peers to run, set based on config file.
 157  */
 158 static unsigned long long num_peers;
 159
 160 /**
 161  * Total number of items to insert.
 162  */
 163 static unsigned long long num_puts;
 164
 165 /**
 166  * Total number of items to attempt to get.
 167  */
 168 static unsigned long long num_gets;
 169
 170 /**
 171  * How many puts do we currently have in flight?
 172  */
 173 static unsigned long long outstanding_puts;
 174
 175 /**
 176  * How many puts are done?
 177  */
 178 static unsigned long long puts_completed;
 179
 180 /**
 181  * How many puts do we currently have in flight?
 182  */
 183 static unsigned long long outstanding_gets;
 184
 185 /**
 186  * How many gets are done?
 187  */
 188 static unsigned long long gets_completed;
 189
 190 /**
 191  * How many gets failed?
 192  */
 193 static unsigned long long gets_failed;
 194
 195 /**
 196  * Global used to count how many connections we have currently
 197  * been notified about (how many times has topology_callback been called
 198  * with success?)
 199  */
 200 static unsigned int total_connections;
 201
 202 /**
 203  * Global used to count how many failed connections we have
 204  * been notified about (how many times has topology_callback
 205  * been called with failure?)
 206  */
 207 static unsigned int failed_connections;
 208
 209 /* Task handle to use to schedule test failure */
 210 GNUNET_SCHEDULER_TaskIdentifier die_task;
 211
 212 static char *blacklist_transports;
 213
 214 static enum GNUNET_TESTING_Topology topology;
 215
 216 static enum GNUNET_TESTING_Topology blacklist_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* Don't do any blacklisting */
 217
 218 static enum GNUNET_TESTING_Topology connection_topology = GNUNET_TESTING_TOPOLOGY_NONE; /* NONE actually means connect all allowed peers */
 219
 220 static enum GNUNET_TESTING_TopologyOption connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL;
 221
 222 static double connect_topology_option_modifier = 0.0;
 223
 224 /* Global return value (0 for success, anything else for failure) */
 225 static int ok;
 226
 227
 228 /**
 229  * Check whether peers successfully shut down.
 230  */
 231 void shutdown_callback (void *cls,
 232                         const char *emsg)
 233 {
 234   if (emsg != NULL)
 235     {
 236       if (ok == 0)
 237         ok = 2;
 238     }
 239 }
 240
 241 /**
 242  * Task to release DHT handles for PUT
 243  */
 244 static void
 245 put_disconnect_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 246 {
 247   struct TestPutContext *test_put = cls;
 248   test_put->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 249   GNUNET_DHT_disconnect(test_put->dht_handle);
 250   test_put->dht_handle = NULL;
 251 }
 252
 253 /**
 254  * Function scheduled to be run on the successful completion of this
 255  * testcase.
 256  */
 257 static void
 258 finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 259 {
 260   GNUNET_assert (pg != NULL);
 261   struct TestPutContext *test_put = all_puts;
 262   struct TestGetContext *test_get = all_gets;
 263
 264   while (test_put != NULL)
 265     {
 266       if (test_put->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 267         GNUNET_SCHEDULER_cancel(test_put->disconnect_task);
 268       if (test_put->dht_handle != NULL)
 269         GNUNET_DHT_disconnect(test_put->dht_handle);
 270       test_put = test_put->next;
 271     }
 272
 273   while (test_get != NULL)
 274     {
 275       if (test_get->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 276         GNUNET_SCHEDULER_cancel(test_get->disconnect_task);
 277       if (test_get->get_handle != NULL)
 278         GNUNET_DHT_get_stop(test_get->get_handle);
 279       if (test_get->dht_handle != NULL)
 280         GNUNET_DHT_disconnect(test_get->dht_handle);
 281       test_get = test_get->next;
 282     }
 283
 284   GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 285   ok = 0;
 286 }
 287
 288
 289 /**
 290  * Check if the get_handle is being used, if so stop the request.  Either
 291  * way, schedule the end_badly_cont function which actually shuts down the
 292  * test.
 293  */
 294 static void
 295 end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 296 {
 297   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failing test with error: `%s'!\n", (char *)cls);
 298
 299   struct TestPutContext *test_put = all_puts;
 300   struct TestGetContext *test_get = all_gets;
 301
 302   while (test_put != NULL)
 303     {
 304       if (test_put->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 305         GNUNET_SCHEDULER_cancel(test_put->disconnect_task);
 306       if (test_put->dht_handle != NULL)
 307         GNUNET_DHT_disconnect(test_put->dht_handle);
 308       test_put = test_put->next;
 309     }
 310
 311   while (test_get != NULL)
 312     {
 313       if (test_get->disconnect_task != GNUNET_SCHEDULER_NO_TASK)
 314         GNUNET_SCHEDULER_cancel(test_get->disconnect_task);
 315       if (test_get->get_handle != NULL)
 316         GNUNET_DHT_get_stop(test_get->get_handle);
 317       if (test_get->dht_handle != NULL)
 318         GNUNET_DHT_disconnect(test_get->dht_handle);
 319       test_get = test_get->next;
 320     }
 321
 322   GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
 323   ok = 1;
 324 }
 325
 326 /**
 327  * Task to release DHT handle associated with GET request.
 328  */
 329 static void
 330 get_stop_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 331 {
 332   struct TestGetContext *test_get = cls;
 333   outstanding_gets--; /* GET is really finished */
 334   GNUNET_DHT_disconnect(test_get->dht_handle);
 335   test_get->dht_handle = NULL;
 336
 337   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "%d gets succeeded, %d gets failed!\n", gets_completed, gets_failed);
 338   if ((gets_completed == num_gets) && (outstanding_gets == 0))/* All gets successful */
 339     {
 340       GNUNET_SCHEDULER_cancel (die_task);
 341       //GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5), &get_topology, NULL);
 342       GNUNET_SCHEDULER_add_now(&finish_testing, NULL);
 343     }
 344   else if ((gets_completed + gets_failed == num_gets) && (outstanding_gets == 0)) /* Had some failures */
 345     {
 346       GNUNET_SCHEDULER_cancel(die_task);
 347       GNUNET_SCHEDULER_add_now(&end_badly, "not all gets succeeded!\n");
 348     }
 349 }
 350
 351 /**
 352  * Task to release get handle.
 353  */
 354 static void
 355 get_stop_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 356 {
 357   struct TestGetContext *test_get = cls;
 358   GNUNET_HashCode search_key; /* Key stored under */
 359   char original_data[TEST_DATA_SIZE]; /* Made up data to store */
 360
 361   memset(original_data, test_get->uid, sizeof(original_data));
 362   GNUNET_CRYPTO_hash(original_data, TEST_DATA_SIZE, &search_key);
 363
 364   if (tc->reason == GNUNET_SCHEDULER_REASON_TIMEOUT)
 365     {
 366       gets_failed++;
 367       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Get from peer %s for key %s failed!\n", test_get->daemon->shortname, GNUNET_h2s(&search_key));
 368     }
 369   GNUNET_assert(test_get->get_handle != NULL);
 370   GNUNET_DHT_get_stop(test_get->get_handle);
 371   GNUNET_SCHEDULER_add_now (&get_stop_finished, test_get);
 372   test_get->get_handle = NULL;
 373   test_get->disconnect_task = GNUNET_SCHEDULER_NO_TASK;
 374 }
 375
 376 /**
 377  * Iterator called if the GET request initiated returns a response.
 378  *
 379  * @param cls closure
 380  * @param exp when will this value expire
 381  * @param key key of the result
 382  * @param type type of the result
 383  * @param size number of bytes in data
 384  * @param data pointer to the result data
 385  */
 386 void get_result_iterator (void *cls,
 387                           struct GNUNET_TIME_Absolute exp,
 388                           const GNUNET_HashCode * key,
 389                           const struct GNUNET_PeerIdentity * const *get_path,
 390                           const struct GNUNET_PeerIdentity * const *put_path,
 391                           enum GNUNET_BLOCK_Type type,
 392                           size_t size,
 393                           const void *data)
 394 {
 395   struct TestGetContext *test_get = cls;
 396   GNUNET_HashCode search_key; /* Key stored under */
 397   char original_data[TEST_DATA_SIZE]; /* Made up data to store */
 398
 399   memset(original_data, test_get->uid, sizeof(original_data));
 400   GNUNET_CRYPTO_hash(original_data, TEST_DATA_SIZE, &search_key);
 401
 402   if (test_get->succeeded == GNUNET_YES)
 403     return; /* Get has already been successful, probably ending now */
 404
 405   if ((0 != memcmp(&search_key, key, sizeof (GNUNET_HashCode))) || (0 != memcmp(original_data, data, sizeof(original_data))))
 406     {
 407       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Key or data is not the same as was inserted!\n");
 408     }
 409   else
 410     {
 411       gets_completed++;
 412       test_get->succeeded = GNUNET_YES;
 413     }
 414
 415   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received correct GET response!\n");
 416   GNUNET_SCHEDULER_cancel(test_get->disconnect_task);
 417   GNUNET_SCHEDULER_add_continuation(&get_stop_task, test_get, GNUNET_SCHEDULER_REASON_PREREQ_DONE);
 418 }
 419
 420
 421 /**
 422  * Set up some data, and call API PUT function
 423  */
 424 static void
 425 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 426 {
 427   struct TestGetContext *test_get = cls;
 428   GNUNET_HashCode key; /* Made up key to store data under */
 429   char data[TEST_DATA_SIZE]; /* Made up data to store */
 430
 431   if (test_get == NULL)
 432     return; /* End of the list */
 433   memset(data, test_get->uid, sizeof(data));
 434   GNUNET_CRYPTO_hash(data, TEST_DATA_SIZE, &key);
 435
 436   if (outstanding_gets > MAX_OUTSTANDING_GETS)
 437     {
 438       GNUNET_SCHEDULER_add_delayed (GET_DELAY, &do_get, test_get);
 439       return;
 440     }
 441
 442   test_get->dht_handle = GNUNET_DHT_connect(test_get->daemon->cfg, 10);
 443   /* Insert the data at the first peer */
 444   GNUNET_assert(test_get->dht_handle != NULL);
 445   outstanding_gets++;
 446   test_get->get_handle = GNUNET_DHT_get_start(test_get->dht_handle,
 447                                               GNUNET_TIME_UNIT_FOREVER_REL,
 448                                               GNUNET_BLOCK_TYPE_TEST,
 449                                               &key,
 450                                               GNUNET_DHT_RO_NONE,
 451                                               NULL, 0,
 452                                               NULL, 0,
 453                                               &get_result_iterator,
 454                                               test_get);
 455 #if VERBOSE
 456   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting get for uid %u from peer %s\n",
 457              test_get->uid,
 458              test_get->daemon->shortname);
 459 #endif
 460   test_get->disconnect_task = GNUNET_SCHEDULER_add_delayed(GET_TIMEOUT, &get_stop_task, test_get);
 461   GNUNET_SCHEDULER_add_now (&do_get, test_get->next);
 462 }
 463
 464 /**
 465  * Called when the PUT request has been transmitted to the DHT service.
 466  * Schedule the GET request for some time in the future.
 467  */
 468 static void
 469 put_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 470 {
 471   struct TestPutContext *test_put = cls;
 472   outstanding_puts--;
 473   puts_completed++;
 474
 475   GNUNET_SCHEDULER_cancel(test_put->disconnect_task);
 476   test_put->disconnect_task = GNUNET_SCHEDULER_add_now(&put_disconnect_task, test_put);
 477   if (puts_completed == num_puts)
 478     {
 479       GNUNET_assert(outstanding_puts == 0);
 480       GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10), &do_get, all_gets);
 481       return;
 482     }
 483 }
 484
 485 /**
 486  * Set up some data, and call API PUT function
 487  */
 488 static void
 489 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 490 {
 491   struct TestPutContext *test_put = cls;
 492   GNUNET_HashCode key; /* Made up key to store data under */
 493   char data[TEST_DATA_SIZE]; /* Made up data to store */
 494
 495   if (test_put == NULL)
 496     return; /* End of list */
 497
 498   memset(data, test_put->uid, sizeof(data));
 499   GNUNET_CRYPTO_hash(data, TEST_DATA_SIZE, &key);
 500
 501   if (outstanding_puts > MAX_OUTSTANDING_PUTS)
 502     {
 503       GNUNET_SCHEDULER_add_delayed (PUT_DELAY, &do_put, test_put);
 504       return;
 505     }
 506
 507 #if VERBOSE
 508     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting put for uid %u from peer %s\n",
 509                test_put->uid,
 510                test_put->daemon->shortname);
 511 #endif
 512   test_put->dht_handle = GNUNET_DHT_connect(test_put->daemon->cfg, 10);
 513
 514   GNUNET_assert(test_put->dht_handle != NULL);
 515   outstanding_puts++;
 516   GNUNET_DHT_put(test_put->dht_handle,
 517                  &key,
 518                  GNUNET_DHT_RO_NONE,
 519                  GNUNET_BLOCK_TYPE_TEST,
 520                  sizeof(data), data,
 521                  GNUNET_TIME_UNIT_FOREVER_ABS,
 522                  GNUNET_TIME_UNIT_FOREVER_REL,
 523                  &put_finished, test_put);
 524   test_put->disconnect_task = GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_get_forever(), &put_disconnect_task, test_put);
 525   GNUNET_SCHEDULER_add_now(&do_put, test_put->next);
 526 }
 527
 528
 529 /**
 530  * Set up some all of the put and get operations we want
 531  * to do.  Allocate data structure for each, add to list,
 532  * then call actual insert functions.
 533  */
 534 static void
 535 setup_puts_and_gets (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
 536 {
 537   int i;
 538   uint32_t temp_daemon;
 539   struct TestPutContext *test_put;
 540   struct TestGetContext *test_get;
 541   int remember[num_puts][num_peers];
 542
 543   for (i = 0; i < num_puts; i++)
 544     {
 545       test_put = GNUNET_malloc(sizeof(struct TestPutContext));
 546       test_put->uid = i;
 547       temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 548       test_put->daemon = GNUNET_TESTING_daemon_get(pg, temp_daemon);
 549       test_put->next = all_puts;
 550       all_puts = test_put;
 551     }
 552
 553   for (i = 0; i < num_gets; i++)
 554     {
 555       test_get = GNUNET_malloc(sizeof(struct TestGetContext));
 556       test_get->uid = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_puts);
 557       temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 558       while (remember[test_get->uid][temp_daemon] == 1)
 559         temp_daemon = GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_WEAK, num_peers);
 560       test_get->daemon = GNUNET_TESTING_daemon_get(pg, temp_daemon);
 561       remember[test_get->uid][temp_daemon] = 1;
 562       test_get->next = all_gets;
 563       all_gets = test_get;
 564     }
 565
 566   GNUNET_SCHEDULER_add_now (&do_put, all_puts);
 567 }
 568
 569
 570 /**
 571  * This function is called whenever a connection attempt is finished between two of
 572  * the started peers (started with GNUNET_TESTING_daemons_start).  The total
 573  * number of times this function is called should equal the number returned
 574  * from the GNUNET_TESTING_connect_topology call.
 575  *
 576  * The emsg variable is NULL on success (peers connected), and non-NULL on
 577  * failure (peers failed to connect).
 578  */
 579 void
 580 topology_callback (void *cls,
 581                    const struct GNUNET_PeerIdentity *first,
 582                    const struct GNUNET_PeerIdentity *second,
 583                    uint32_t distance,
 584                    const struct GNUNET_CONFIGURATION_Handle *first_cfg,
 585                    const struct GNUNET_CONFIGURATION_Handle *second_cfg,
 586                    struct GNUNET_TESTING_Daemon *first_daemon,
 587                    struct GNUNET_TESTING_Daemon *second_daemon,
 588                    const char *emsg)
 589 {
 590   if (emsg == NULL)
 591     {
 592       total_connections++;
 593 #if VERBOSE > 1
 594       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "connected peer %s to peer %s, distance %u\n",
 595                  first_daemon->shortname,
 596                  second_daemon->shortname,
 597                  distance);
 598 #endif
 599     }
 600 #if VERBOSE
 601   else
 602     {
 603       failed_connections++;
 604       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to connect peer %s to peer %s with error :\n%s\n",
 605                   first_daemon->shortname,
 606                   second_daemon->shortname, emsg);
 607     }
 608 #endif
 609
 610   if (total_connections == expected_connections)
 611     {
 612 #if VERBOSE
 613       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 614                   "Created %d total connections, which is our target number!  Starting next phase of testing.\n",
 615                   total_connections);
 616 #endif
 617       GNUNET_SCHEDULER_cancel (die_task);
 618       die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
 619                                                &end_badly, "from setup puts/gets");
 620
 621       GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2), &setup_puts_and_gets, NULL);
 622     }
 623   else if (total_connections + failed_connections == expected_connections)
 624     {
 625       GNUNET_SCHEDULER_cancel (die_task);
 626       die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from topology_callback (too many failed connections)");
 627     }
 628 }
 629
 630 static void
 631 peers_started_callback (void *cls,
 632        const struct GNUNET_PeerIdentity *id,
 633        const struct GNUNET_CONFIGURATION_Handle *cfg,
 634        struct GNUNET_TESTING_Daemon *d, const char *emsg)
 635 {
 636   if (emsg != NULL)
 637     {
 638       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to start daemon with error: `%s'\n",
 639                   emsg);
 640       return;
 641     }
 642   GNUNET_assert (id != NULL);
 643
 644 #if VERBOSE
 645   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Started daemon %llu out of %llu\n",
 646               (num_peers - peers_left) + 1, num_peers);
 647 #endif
 648
 649   peers_left--;
 650   if (peers_left == 0)
 651     {
 652
 653 #if VERBOSE
 654       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 655                   "All %d daemons started, now connecting peers!\n",
 656                   num_peers);
 657 #endif
 658       GNUNET_SCHEDULER_cancel (die_task);
 659
 660       expected_connections = -1;
 661       if ((pg != NULL) && (peers_left == 0))
 662         {
 663           expected_connections = GNUNET_TESTING_connect_topology (pg, connection_topology, connect_topology_option, connect_topology_option_modifier, NULL, NULL);
 664 #if VERBOSE
 665           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 666                       "Have %d expected connections\n", expected_connections);
 667 #endif
 668         }
 669
 670       if (expected_connections == GNUNET_SYSERR)
 671         {
 672           die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from connect topology (bad return)");
 673         }
 674
 675       die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
 676                                                &end_badly, "from connect topology (timeout)");
 677
 678       ok = 0;
 679     }
 680 }
 681
 682 static void
 683 create_topology ()
 684 {
 685   peers_left = num_peers; /* Reset counter */
 686   if (GNUNET_TESTING_create_topology (pg, topology, blacklist_topology, blacklist_transports) != GNUNET_SYSERR)
 687     {
 688 #if VERBOSE
 689       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 690                   "Topology set up, now starting peers!\n");
 691 #endif
 692       GNUNET_TESTING_daemons_continue_startup(pg);
 693     }
 694   else
 695     {
 696       GNUNET_SCHEDULER_cancel (die_task);
 697       die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from create topology (bad return)");
 698     }
 699   GNUNET_SCHEDULER_cancel (die_task);
 700   die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
 701                                            &end_badly, "from continue startup (timeout)");
 702 }
 703
 704 /**
 705  * Callback indicating that the hostkey was created for a peer.
 706  *
 707  * @param cls NULL
 708  * @param id the peer identity
 709  * @param d the daemon handle (pretty useless at this point, remove?)
 710  * @param emsg non-null on failure
 711  */
 712 void hostkey_callback (void *cls,
 713                        const struct GNUNET_PeerIdentity *id,
 714                        struct GNUNET_TESTING_Daemon *d,
 715                        const char *emsg)
 716 {
 717   if (emsg != NULL)
 718     {
 719       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Hostkey callback received error: %s\n", emsg);
 720     }
 721
 722 #if VERBOSE > 1
 723     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 724                 "Hostkey (%d/%d) created for peer `%s'\n",
 725                 num_peers - peers_left, num_peers, GNUNET_i2s(id));
 726 #endif
 727
 728
 729     peers_left--;
 730     if (peers_left == 0)
 731       {
 732 #if VERBOSE
 733         GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 734                     "All %d hostkeys created, now creating topology!\n",
 735                     num_peers);
 736 #endif
 737         GNUNET_SCHEDULER_cancel (die_task);
 738         /* Set up task in case topology creation doesn't finish
 739          * within a reasonable amount of time */
 740         die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
 741                                                  &end_badly, "from create_topology");
 742         GNUNET_SCHEDULER_add_now(&create_topology, NULL);
 743         ok = 0;
 744       }
 745 }
 746
 747
 748 static void
 749 run (void *cls,
 750      char *const *args,
 751      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 752 {
 753   char * topology_str;
 754   char * connect_topology_str;
 755   char * blacklist_topology_str;
 756   char * connect_topology_option_str;
 757   char * connect_topology_option_modifier_string;
 758
 759   /* Get path from configuration file */
 760   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
 761     {
 762       ok = 404;
 763       return;
 764     }
 765
 766   if ((GNUNET_YES ==
 767       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "topology",
 768                                             &topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&topology, topology_str)))
 769     {
 770       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 771                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "TOPOLOGY");
 772       topology = GNUNET_TESTING_TOPOLOGY_CLIQUE; /* Defaults to NONE, so set better default here */
 773     }
 774
 775   if ((GNUNET_YES ==
 776       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology",
 777                                             &connect_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&connection_topology, connect_topology_str)))
 778     {
 779       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 780                   "Invalid connect topology `%s' given for section %s option %s\n", connect_topology_str, "TESTING", "CONNECT_TOPOLOGY");
 781     }
 782   GNUNET_free_non_null(connect_topology_str);
 783   if ((GNUNET_YES ==
 784       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "connect_topology_option",
 785                                             &connect_topology_option_str)) && (GNUNET_NO == GNUNET_TESTING_topology_option_get(&connect_topology_option, connect_topology_option_str)))
 786     {
 787       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 788                   "Invalid connect topology option `%s' given for section %s option %s\n", connect_topology_option_str, "TESTING", "CONNECT_TOPOLOGY_OPTION");
 789       connect_topology_option = GNUNET_TESTING_TOPOLOGY_OPTION_ALL; /* Defaults to NONE, set to ALL */
 790     }
 791   GNUNET_free_non_null(connect_topology_option_str);
 792   if (GNUNET_YES ==
 793         GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "connect_topology_option_modifier",
 794                                                &connect_topology_option_modifier_string))
 795     {
 796       if (sscanf(connect_topology_option_modifier_string, "%lf", &connect_topology_option_modifier) != 1)
 797       {
 798         GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 799         _("Invalid value `%s' for option `%s' in section `%s': expected float\n"),
 800         connect_topology_option_modifier_string,
 801         "connect_topology_option_modifier",
 802         "TESTING");
 803       }
 804       GNUNET_free (connect_topology_option_modifier_string);
 805     }
 806
 807   if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string (cfg, "testing", "blacklist_transports",
 808                                          &blacklist_transports))
 809     blacklist_transports = NULL;
 810
 811   if ((GNUNET_YES ==
 812       GNUNET_CONFIGURATION_get_value_string(cfg, "testing", "blacklist_topology",
 813                                             &blacklist_topology_str)) && (GNUNET_NO == GNUNET_TESTING_topology_get(&blacklist_topology, blacklist_topology_str)))
 814     {
 815       GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 816                   "Invalid topology `%s' given for section %s option %s\n", topology_str, "TESTING", "BLACKLIST_TOPOLOGY");
 817     }
 818   GNUNET_free_non_null(topology_str);
 819   GNUNET_free_non_null(blacklist_topology_str);
 820
 821   /* Get number of peers to start from configuration */
 822   if (GNUNET_SYSERR ==
 823       GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
 824                                              &num_peers))
 825     num_peers = DEFAULT_NUM_PEERS;
 826
 827   if (GNUNET_SYSERR ==
 828       GNUNET_CONFIGURATION_get_value_number (cfg, "dht_testing", "num_puts",
 829                                              &num_puts))
 830     num_puts = DEFAULT_NUM_PEERS;
 831
 832   if (GNUNET_SYSERR ==
 833       GNUNET_CONFIGURATION_get_value_number (cfg, "dht_testing", "num_gets",
 834                                              &num_gets))
 835     num_gets = DEFAULT_NUM_PEERS;
 836
 837   /* Set peers_left so we know when all peers started */
 838   peers_left = num_peers;
 839
 840   /* Set up a task to end testing if peer start fails */
 841   die_task = GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, SECONDS_PER_PEER_START * num_peers),
 842                                            &end_badly, "didn't generate all hostkeys within a reasonable amount of time!!!");
 843
 844   pg = GNUNET_TESTING_daemons_start (cfg,
 845                                      peers_left, GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, SECONDS_PER_PEER_START * num_peers), &hostkey_callback, NULL, &peers_started_callback, NULL,
 846                                      &topology_callback, NULL, NULL);
 847
 848 }
 849
 850 static int
 851 check ()
 852 {
 853   int ret;
 854   /* Arguments for GNUNET_PROGRAM_run */
 855   char *const argv[] = {"test-dht-multipeer", /* Name to give running binary */
 856     "-c",
 857     "test_dht_multipeer_data.conf", /* Config file to use */
 858 #if VERBOSE
 859     "-L", "DEBUG",
 860 #endif
 861     NULL
 862   };
 863   struct GNUNET_GETOPT_CommandLineOption options[] = {
 864     GNUNET_GETOPT_OPTION_END
 865   };
 866   /* Run the run function as a new program */
 867   ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 868                       argv, "test-dht-multipeer", "nohelp",
 869                       options, &run, &ok);
 870   if (ret != GNUNET_OK)
 871     {
 872       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-dht-multipeer': Failed with error code %d\n", ret);
 873     }
 874   return ok;
 875 }
 876
 877 int
 878 main (int argc, char *argv[])
 879 {
 880   int ret;
 881
 882   GNUNET_log_setup ("test-dht-multipeer",
 883 #if VERBOSE
 884                     "DEBUG",
 885 #else
 886                     "WARNING",
 887 #endif
 888                     NULL);
 889   ret = check ();
 890   /**
 891    * Need to remove base directory, subdirectories taken care
 892    * of by the testing framework.
 893    */
 894   if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
 895     {
 896       GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
 897     }
 898   return ret;
 899 }
 900
 901 /* end of test_dht_twopeer_put_get.c */