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_NO
  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
 216   if (cls == &p1)
 217     peer_num = 1;
 218   else if (cls == &p2)
 219     peer_num = 2;
 220   else if (cls == &p3)
 221     peer_num = 3;
 222
 223   if (memcmp(peer, &p1.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 224     connect_num = 1;
 225   else if (memcmp(peer, &p2.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 226     connect_num = 2;
 227   else if (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 228     connect_num = 3;
 229
 230   if ((cls == &p1) && (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0))
 231     {
 232
 233       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 234                  "Peer 1 notified about connection to peer 3, distance %u!\n", GNUNET_i2s (peer), cls, distance);
 235
 236       GNUNET_TRANSPORT_notify_transmit_ready (p1.th,
 237                                               &p3.id,
 238                                               256, 0, TIMEOUT, &notify_ready,
 239                                               &p1);
 240     }
 241   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 242               "Peer `%d' connected to peer `%d' distance %d!\n", peer_num, connect_num, distance);
 243 }
 244
 245
 246 static void
 247 notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
 248 {
 249   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 250               "Peer `%4s' disconnected (%p)!\n",
 251               GNUNET_i2s (peer), cls);
 252 }
 253
 254
 255 static void
 256 setup_peer (struct PeerContext *p, const char *cfgname)
 257 {
 258   p->cfg = GNUNET_CONFIGURATION_create ();
 259   p->cfg_file = strdup(cfgname);
 260 #if START_ARM
 261   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 262                                         "gnunet-arm",
 263 #if VERBOSE_ARM
 264                                         "-L", "DEBUG",
 265 #endif
 266                                         "-c", cfgname, "-s", "-q", NULL);
 267 #endif
 268   GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_load (p->cfg, cfgname));
 269
 270   /*p->th = GNUNET_TRANSPORT_connect (sched, p->cfg,
 271                                     p,
 272                                     &notify_receive,
 273                                     &notify_connect, &notify_disconnect);*/
 274   /*GNUNET_assert (p->th != NULL);*/
 275 }
 276
 277
 278 static void
 279 exchange_hello_last (void *cls,
 280                 const struct GNUNET_MessageHeader *message)
 281 {
 282   struct PeerContext *me = cls;
 283
 284   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &exchange_hello_last, me);
 285
 286   GNUNET_assert (message != NULL);
 287   GNUNET_assert (GNUNET_OK ==
 288                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 289                                       message, &me->id));
 290
 291   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 292               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 293
 294   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 295               "Finished exchanging HELLOs, now waiting for transmission!\n");
 296
 297 }
 298
 299
 300 static void
 301 exchange_hello_next (void *cls,
 302                 const struct GNUNET_MessageHeader *message)
 303 {
 304   struct PeerContext *me = cls;
 305
 306   GNUNET_TRANSPORT_get_hello_cancel (p2.th, &exchange_hello_next, me);
 307   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 308               "Exchanging HELLO with peer (%p)!\n", cls);
 309
 310   GNUNET_assert (message != NULL);
 311   GNUNET_assert (GNUNET_OK ==
 312                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 313                                       message, &me->id));
 314
 315   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 316               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 317
 318   GNUNET_TRANSPORT_offer_hello (p3.th, message);
 319
 320   GNUNET_TRANSPORT_get_hello (p3.th, &exchange_hello_last, &p3);
 321
 322
 323 }
 324
 325
 326 static void
 327 exchange_hello (void *cls,
 328                 const struct GNUNET_MessageHeader *message)
 329 {
 330   struct PeerContext *me = cls;
 331
 332   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &exchange_hello, me);
 333   p2.th = GNUNET_TRANSPORT_connect (sched, p2.cfg,
 334                                     &p2,
 335                                     &notify_receive,
 336                                     &notify_connect, &notify_disconnect);
 337
 338   GNUNET_assert(p2.th != NULL);
 339
 340   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 341               "Exchanging HELLO with peer (%p)!\n", cls);
 342
 343   GNUNET_assert (message != NULL);
 344   GNUNET_assert (GNUNET_OK ==
 345                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 346                                       message, &me->id));
 347
 348   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 349               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 350
 351   GNUNET_TRANSPORT_offer_hello (p2.th, message);
 352   GNUNET_TRANSPORT_get_hello (p2.th, &exchange_hello_next, &p2);
 353 }
 354
 355 static void
 356 blacklist_setup_third (void *cls,
 357                 const struct GNUNET_MessageHeader *message)
 358 {
 359   struct PeerContext *me = cls;
 360   char *blacklist_filename;
 361   struct GNUNET_DISK_FileHandle *file;
 362   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 363   char *buf;
 364   size_t size;
 365
 366   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &blacklist_setup_third, &p3);
 367
 368   GNUNET_assert (message != NULL);
 369   GNUNET_assert (GNUNET_OK ==
 370                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 371                                       message, &me->id));
 372
 373   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-1/blacklist");
 374   if (blacklist_filename != NULL)
 375     {
 376       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 377                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 378       GNUNET_free(blacklist_filename);
 379
 380       if (file == NULL)
 381         {
 382           GNUNET_SCHEDULER_cancel(sched, die_task);
 383           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 384           return;
 385         }
 386       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 387       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 388       GNUNET_DISK_file_write(file, buf, size);
 389       GNUNET_free_non_null(buf);
 390     }
 391
 392   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 393                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p1.cfg_file);
 394
 395   restart_transport(&p1);
 396
 397   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 398                                     &p1,
 399                                     &notify_receive,
 400                                     &notify_connect, &notify_disconnect);
 401
 402   GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 403 }
 404
 405 static void
 406 blacklist_setup_first (void *cls,
 407                 const struct GNUNET_MessageHeader *message)
 408 {
 409   struct PeerContext *me = cls;
 410   char *blacklist_filename;
 411   struct GNUNET_DISK_FileHandle *file;
 412   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 413   char *buf;
 414   size_t size;
 415
 416   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &blacklist_setup_first, me);
 417   sleep(2);
 418
 419   GNUNET_assert (message != NULL);
 420   GNUNET_assert (GNUNET_OK ==
 421                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 422                                       message, &me->id));
 423
 424   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-3/blacklist");
 425   if (blacklist_filename != NULL)
 426     {
 427       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 428                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 429       GNUNET_free(blacklist_filename);
 430
 431       if (file == NULL)
 432         {
 433           GNUNET_SCHEDULER_cancel(sched, die_task);
 434           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 435           return;
 436         }
 437       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 438       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 439       GNUNET_DISK_file_write(file, buf, size);
 440       GNUNET_free_non_null(buf);
 441     }
 442
 443   GNUNET_TRANSPORT_disconnect(p1.th);
 444
 445   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 446                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p3.cfg_file);
 447   restart_transport(&p3);
 448
 449   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 450               "reconnecting to transport (%p)!\n", cls);
 451   p3.th = GNUNET_TRANSPORT_connect (sched, p3.cfg,
 452                                     &p3,
 453                                     &notify_receive,
 454                                     &notify_connect, &notify_disconnect);
 455   if (p3.th != NULL)
 456     GNUNET_TRANSPORT_get_hello (p3.th, &blacklist_setup_third, &p3);
 457   else
 458     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 459                   "reconnecting to transport (%p) failed.!\n", cls);
 460   //GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 461 }
 462
 463
 464 static void
 465 run (void *cls,
 466      struct GNUNET_SCHEDULER_Handle *s,
 467      char *const *args,
 468      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 469 {
 470   GNUNET_assert (ok == 1);
 471   OKPP;
 472   sched = s;
 473
 474   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 475       GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5), &end_badly, NULL);
 476
 477   setup_peer (&p1, "test_transport_api_dv_peer1.conf");
 478   setup_peer (&p2, "test_transport_api_dv_peer2.conf");
 479   setup_peer (&p3, "test_transport_api_dv_peer3.conf");
 480
 481   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 482                                     &p1,
 483                                     &notify_receive,
 484                                     &notify_connect, &notify_disconnect);
 485   GNUNET_assert(p1.th != NULL);
 486   /*GNUNET_assert(p2.th != NULL);
 487   GNUNET_assert(p3.th != NULL);*/
 488
 489   GNUNET_TRANSPORT_get_hello (p1.th, &blacklist_setup_first, &p1);
 490 }
 491
 492 static int
 493 check ()
 494 {
 495
 496   char *const argv[] = { "test-transport-api",
 497     "-c",
 498     "test_transport_api_data.conf",
 499 #if VERBOSE
 500     "-L", "DEBUG",
 501 #endif
 502     NULL
 503   };
 504
 505   struct GNUNET_GETOPT_CommandLineOption options[] = {
 506     GNUNET_GETOPT_OPTION_END
 507   };
 508
 509   ok = 1;
 510   GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 511                       argv, "test-transport-api", "nohelp",
 512                       options, &run, &ok);
 513   stop_arm (&p1);
 514   stop_arm (&p2);
 515   stop_arm (&p3);
 516   return ok;
 517 }
 518
 519
 520 int
 521 main (int argc, char *argv[])
 522 {
 523   int ret;
 524 #ifdef MINGW
 525   return GNUNET_SYSERR;
 526 #endif
 527
 528   GNUNET_log_setup ("test-transport-api-dv",
 529 #if VERBOSE
 530                     "DEBUG",
 531 #else
 532                     "WARNING",
 533 #endif
 534                     NULL);
 535   ret = check ();
 536   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-1");
 537   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-2");
 538   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-3");
 539   return ret;
 540 }
 541
 542 /* end of test_transport_api_dv.c */