src/dv/test_transport_api_dv.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 transport/test_transport_api_dv.c
  22  * @brief base test case for dv transport (separated from other transport
  23  * testcases for two reasons. 1) dv-service relies on core and other
  24  * transport plugins, dv plugin relies on dv-service, so dv-plugin needs
  25  * to live here, and 2) a dv plugin testcase is different from other
  26  * tranport plugin testcases because we need at least three peer to test
  27  * it.
  28  *
  29  * This test case tests DV functionality.  Specifically it starts three
  30  * peers connected in a line (1 <-> 2 <-> 3).  Then a message is transmitted
  31  * from peer 1 to peer 3.  Assuming that DV is working, peer 2 should have
  32  * gossiped about peer 3 to 1, and should then forward a message from one
  33  * to 3.
  34  */
  35 #include "platform.h"
  36 #include "gnunet_common.h"
  37 #include "gnunet_hello_lib.h"
  38 #include "gnunet_getopt_lib.h"
  39 #include "gnunet_os_lib.h"
  40 #include "gnunet_program_lib.h"
  41 #include "gnunet_scheduler_lib.h"
  42 #include "gnunet_transport_service.h"
  43 #include "../transport/transport.h"
  44
  45 #define VERBOSE GNUNET_YES
  46
  47 #define VERBOSE_ARM GNUNET_NO
  48
  49 #define START_ARM GNUNET_YES
  50
  51 /**
  52  * How long until we give up on transmitting the message?
  53  */
  54 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 50)
  55
  56 #define MTYPE 12345
  57
  58 struct PeerContext
  59 {
  60   struct GNUNET_CONFIGURATION_Handle *cfg;
  61   struct GNUNET_TRANSPORT_Handle *th;
  62   struct GNUNET_PeerIdentity id;
  63   const char *cfg_file;
  64   const struct GNUNET_HELLO_Message *hello;
  65 #if START_ARM
  66   pid_t arm_pid;
  67 #endif
  68 };
  69
  70 static struct PeerContext p1;
  71
  72 static struct PeerContext p2;
  73
  74 static struct PeerContext p3;
  75
  76 static struct GNUNET_SCHEDULER_Handle *sched;
  77
  78 static int ok;
  79
  80 GNUNET_SCHEDULER_TaskIdentifier die_task;
  81
  82 #if VERBOSE
  83 #define OKPP do { ok++; fprintf (stderr, "Now at stage %u at %s:%u\n", ok, __FILE__, __LINE__); } while (0)
  84 #else
  85 #define OKPP do { ok++; } while (0)
  86 #endif
  87
  88
  89 static void
  90 end ()
  91 {
  92   /* do work here */
  93   GNUNET_SCHEDULER_cancel (sched, die_task);
  94   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from transport 1!\n");
  95   GNUNET_TRANSPORT_disconnect (p1.th);
  96   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from transport 2!\n");
  97   GNUNET_TRANSPORT_disconnect (p2.th);
  98   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from transport 3!\n");
  99   GNUNET_TRANSPORT_disconnect (p3.th);
 100
 101   die_task = GNUNET_SCHEDULER_NO_TASK;
 102   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Transports disconnected, returning success!\n");
 103   ok = 0;
 104 }
 105
 106 static void
 107 stop_arm (struct PeerContext *p)
 108 {
 109 #if START_ARM
 110   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 111                                         "gnunet-arm",
 112 #if VERBOSE
 113                                         "-L", "DEBUG",
 114 #endif
 115                                         "-c", p->cfg_file, "-e", "-q", NULL);
 116
 117   GNUNET_OS_process_wait (p->arm_pid);
 118 #endif
 119   GNUNET_CONFIGURATION_destroy (p->cfg);
 120 }
 121
 122
 123 static void
 124 restart_transport (struct PeerContext *p)
 125 {
 126 #if START_ARM
 127   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 128                                         "gnunet-arm",
 129 #if VERBOSE
 130                                         "-L", "DEBUG",
 131 #endif
 132                                         "-c", p->cfg_file, "-k", "transport", "-q", NULL);
 133
 134   GNUNET_OS_process_wait (p->arm_pid);
 135 #endif
 136
 137 #if START_ARM
 138   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 139                                         "gnunet-arm",
 140 #if VERBOSE
 141                                         "-L", "DEBUG",
 142 #endif
 143                                         "-c", p->cfg_file, "-i", "transport", "-q", NULL);
 144
 145   GNUNET_OS_process_wait (p->arm_pid);
 146 #endif
 147 }
 148
 149
 150 static void
 151 end_badly ()
 152 {
 153   /* do work here */
 154 #if VERBOSE
 155   fprintf(stderr, "Ending on an unhappy note.\n");
 156 #endif
 157
 158   GNUNET_TRANSPORT_disconnect (p1.th);
 159   GNUNET_TRANSPORT_disconnect (p2.th);
 160   GNUNET_TRANSPORT_disconnect (p3.th);
 161
 162   ok = 1;
 163   return;
 164 }
 165
 166 static void
 167 notify_receive (void *cls,
 168                 const struct GNUNET_PeerIdentity *peer,
 169                 const struct GNUNET_MessageHeader *message,
 170                 struct GNUNET_TIME_Relative latency,
 171                 uint32_t distance)
 172 {
 173
 174   if (ntohs(message->type) != MTYPE)
 175     return;
 176
 177   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received message of type %d from peer (%p) distance %d!\n",
 178                 ntohs(message->type), cls, distance);
 179
 180   GNUNET_assert (MTYPE == ntohs (message->type));
 181   GNUNET_assert (sizeof (struct GNUNET_MessageHeader) ==
 182                  ntohs (message->size));
 183   end ();
 184 }
 185
 186
 187 static size_t
 188 notify_ready (void *cls, size_t size, void *buf)
 189 {
 190   struct GNUNET_MessageHeader *hdr;
 191
 192   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 193               "Transmitting message to peer (%p) - %u!\n", cls, size);
 194   GNUNET_assert (size >= 256);
 195
 196   if (buf != NULL)
 197   {
 198     hdr = buf;
 199     hdr->size = htons (sizeof (struct GNUNET_MessageHeader));
 200     hdr->type = htons (MTYPE);
 201   }
 202
 203   return sizeof (struct GNUNET_MessageHeader);
 204 }
 205
 206
 207 static void
 208 notify_connect (void *cls,
 209                 const struct GNUNET_PeerIdentity *peer,
 210                 struct GNUNET_TIME_Relative latency,
 211                 uint32_t distance)
 212 {
 213   int peer_num = 0;
 214   int connect_num = 0;
 215   struct PeerContext *from_peer = cls;
 216   char *from_peer_str;
 217
 218   if (cls == &p1)
 219     peer_num = 1;
 220   else if (cls == &p2)
 221     peer_num = 2;
 222   else if (cls == &p3)
 223     peer_num = 3;
 224
 225   if (memcmp(peer, &p1.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 226     connect_num = 1;
 227   else if (memcmp(peer, &p2.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 228     connect_num = 2;
 229   else if (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 230     connect_num = 3;
 231
 232   if ((cls == &p1) && (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0))
 233     {
 234
 235       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 236                  "Peer 1 notified about connection to peer 3, distance %u!\n", distance);
 237
 238       GNUNET_TRANSPORT_notify_transmit_ready (p1.th,
 239                                               &p3.id,
 240                                               256, 0, TIMEOUT, &notify_ready,
 241                                               &p1);
 242     }
 243   GNUNET_asprintf(&from_peer_str, "%s", GNUNET_i2s(&from_peer->id));
 244   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 245               "Peer `%d' %4s connected to peer `%d' %4s distance %d!\n", peer_num, from_peer_str, connect_num, GNUNET_i2s(peer), distance);
 246 }
 247
 248
 249 static void
 250 notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
 251 {
 252   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 253               "Peer `%4s' disconnected (%p)!\n",
 254               GNUNET_i2s (peer), cls);
 255 }
 256
 257
 258 static void
 259 setup_peer (struct PeerContext *p, const char *cfgname)
 260 {
 261   p->cfg = GNUNET_CONFIGURATION_create ();
 262   p->cfg_file = strdup(cfgname);
 263 #if START_ARM
 264   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 265                                         "gnunet-arm",
 266 #if VERBOSE_ARM
 267                                         "-L", "DEBUG",
 268 #endif
 269                                         "-c", cfgname, "-s", "-q", NULL);
 270 #endif
 271   GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_load (p->cfg, cfgname));
 272 }
 273
 274
 275 static void
 276 exchange_hello_last (void *cls,
 277                 const struct GNUNET_MessageHeader *message)
 278 {
 279   struct PeerContext *me = cls;
 280
 281   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &exchange_hello_last, me);
 282
 283   GNUNET_assert (message != NULL);
 284   GNUNET_assert (GNUNET_OK ==
 285                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 286                                       message, &me->id));
 287
 288   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 289               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 290
 291   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 292               "Finished exchanging HELLOs, now waiting for transmission!\n");
 293
 294 }
 295
 296
 297 static void
 298 exchange_hello_next (void *cls,
 299                 const struct GNUNET_MessageHeader *message)
 300 {
 301   struct PeerContext *me = cls;
 302
 303   GNUNET_TRANSPORT_get_hello_cancel (p2.th, &exchange_hello_next, me);
 304   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 305               "Exchanging HELLO with peer (%p)!\n", cls);
 306
 307   GNUNET_assert (message != NULL);
 308   GNUNET_assert (GNUNET_OK ==
 309                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 310                                       message, &me->id));
 311
 312   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 313               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 314
 315   GNUNET_TRANSPORT_offer_hello (p3.th, message);
 316
 317   GNUNET_TRANSPORT_get_hello (p3.th, &exchange_hello_last, &p3);
 318
 319
 320 }
 321
 322
 323 static void
 324 exchange_hello (void *cls,
 325                 const struct GNUNET_MessageHeader *message)
 326 {
 327   struct PeerContext *me = cls;
 328
 329   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &exchange_hello, me);
 330   p2.th = GNUNET_TRANSPORT_connect (sched, p2.cfg,
 331                                     &p2,
 332                                     &notify_receive,
 333                                     &notify_connect, &notify_disconnect);
 334
 335   GNUNET_assert(p2.th != NULL);
 336
 337   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 338               "Exchanging HELLO with peer (%p)!\n", cls);
 339
 340   GNUNET_assert (message != NULL);
 341   GNUNET_assert (GNUNET_OK ==
 342                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 343                                       message, &me->id));
 344
 345   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 346               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 347
 348   GNUNET_TRANSPORT_offer_hello (p2.th, message);
 349   GNUNET_TRANSPORT_get_hello (p2.th, &exchange_hello_next, &p2);
 350 }
 351
 352 static void
 353 blacklist_setup_third (void *cls,
 354                 const struct GNUNET_MessageHeader *message)
 355 {
 356   struct PeerContext *me = cls;
 357   char *blacklist_filename;
 358   struct GNUNET_DISK_FileHandle *file;
 359   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 360   char *buf;
 361   size_t size;
 362
 363   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &blacklist_setup_third, &p3);
 364
 365   GNUNET_assert (message != NULL);
 366   GNUNET_assert (GNUNET_OK ==
 367                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 368                                       message, &me->id));
 369
 370   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-1/blacklist");
 371   if (blacklist_filename != NULL)
 372     {
 373       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 374                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 375       GNUNET_free(blacklist_filename);
 376
 377       if (file == NULL)
 378         {
 379           GNUNET_SCHEDULER_cancel(sched, die_task);
 380           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 381           return;
 382         }
 383       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 384       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 385       GNUNET_DISK_file_write(file, buf, size);
 386       GNUNET_free_non_null(buf);
 387     }
 388
 389   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 390                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p1.cfg_file);
 391
 392   restart_transport(&p1);
 393
 394   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 395                                     &p1,
 396                                     &notify_receive,
 397                                     &notify_connect, &notify_disconnect);
 398
 399   GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 400 }
 401
 402 static void
 403 blacklist_setup_first (void *cls,
 404                 const struct GNUNET_MessageHeader *message)
 405 {
 406   struct PeerContext *me = cls;
 407   char *blacklist_filename;
 408   struct GNUNET_DISK_FileHandle *file;
 409   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 410   char *buf;
 411   size_t size;
 412
 413   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &blacklist_setup_first, me);
 414   sleep(2);
 415
 416   GNUNET_assert (message != NULL);
 417   GNUNET_assert (GNUNET_OK ==
 418                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 419                                       message, &me->id));
 420
 421   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-3/blacklist");
 422   if (blacklist_filename != NULL)
 423     {
 424       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 425                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 426       GNUNET_free(blacklist_filename);
 427
 428       if (file == NULL)
 429         {
 430           GNUNET_SCHEDULER_cancel(sched, die_task);
 431           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 432           return;
 433         }
 434       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 435       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 436       GNUNET_DISK_file_write(file, buf, size);
 437       GNUNET_free_non_null(buf);
 438     }
 439
 440   GNUNET_TRANSPORT_disconnect(p1.th);
 441
 442   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 443                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p3.cfg_file);
 444   restart_transport(&p3);
 445
 446   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 447               "reconnecting to transport (%p)!\n", cls);
 448   p3.th = GNUNET_TRANSPORT_connect (sched, p3.cfg,
 449                                     &p3,
 450                                     &notify_receive,
 451                                     &notify_connect, &notify_disconnect);
 452   if (p3.th != NULL)
 453     GNUNET_TRANSPORT_get_hello (p3.th, &blacklist_setup_third, &p3);
 454   else
 455     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 456                   "reconnecting to transport (%p) failed.!\n", cls);
 457   //GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 458 }
 459
 460
 461 static void
 462 run (void *cls,
 463      struct GNUNET_SCHEDULER_Handle *s,
 464      char *const *args,
 465      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 466 {
 467   GNUNET_assert (ok == 1);
 468   OKPP;
 469   sched = s;
 470
 471   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 472       GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5), &end_badly, NULL);
 473
 474   setup_peer (&p1, "test_transport_api_dv_peer1.conf");
 475   setup_peer (&p2, "test_transport_api_dv_peer2.conf");
 476   setup_peer (&p3, "test_transport_api_dv_peer3.conf");
 477
 478   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 479                                     &p1,
 480                                     &notify_receive,
 481                                     &notify_connect, &notify_disconnect);
 482   GNUNET_assert(p1.th != NULL);
 483   /*GNUNET_assert(p2.th != NULL);
 484   GNUNET_assert(p3.th != NULL);*/
 485
 486   GNUNET_TRANSPORT_get_hello (p1.th, &blacklist_setup_first, &p1);
 487 }
 488
 489 static int
 490 check ()
 491 {
 492
 493   char *const argv[] = { "test-transport-api",
 494     "-c",
 495     "test_transport_api_data.conf",
 496 #if VERBOSE
 497     "-L", "DEBUG",
 498 #endif
 499     NULL
 500   };
 501
 502   struct GNUNET_GETOPT_CommandLineOption options[] = {
 503     GNUNET_GETOPT_OPTION_END
 504   };
 505
 506   ok = 1;
 507   GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 508                       argv, "test-transport-api", "nohelp",
 509                       options, &run, &ok);
 510   stop_arm (&p1);
 511   stop_arm (&p2);
 512   stop_arm (&p3);
 513   return ok;
 514 }
 515
 516
 517 int
 518 main (int argc, char *argv[])
 519 {
 520   int ret;
 521 #ifdef MINGW
 522   return GNUNET_SYSERR;
 523 #endif
 524
 525   GNUNET_log_setup ("test-transport-api-dv",
 526 #if VERBOSE
 527                     "DEBUG",
 528 #else
 529                     "WARNING",
 530 #endif
 531                     NULL);
 532   ret = check ();
 533   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-1");
 534   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-2");
 535   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-3");
 536   return ret;
 537 }
 538
 539 /* end of test_transport_api_dv.c */