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_YES
  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", 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", NULL);
 133
 134   fprintf(stderr, "stop arm command returned %d\n", p->arm_pid);
 135   GNUNET_OS_process_wait (p->arm_pid);
 136 #endif
 137
 138 #if START_ARM
 139   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 140                                         "gnunet-arm",
 141 #if VERBOSE
 142                                         "-L", "DEBUG",
 143 #endif
 144                                         "-c", p->cfg_file, "-i", "transport", NULL);
 145
 146   GNUNET_OS_process_wait (p->arm_pid);
 147 #endif
 148 }
 149
 150
 151 static void
 152 end_badly ()
 153 {
 154   /* do work here */
 155 #if VERBOSE
 156   fprintf(stderr, "Ending on an unhappy note.\n");
 157 #endif
 158
 159   GNUNET_TRANSPORT_disconnect (p1.th);
 160   GNUNET_TRANSPORT_disconnect (p2.th);
 161   GNUNET_TRANSPORT_disconnect (p3.th);
 162
 163   ok = 1;
 164   return;
 165 }
 166
 167 static void
 168 notify_receive (void *cls,
 169                 const struct GNUNET_PeerIdentity *peer,
 170                 const struct GNUNET_MessageHeader *message,
 171                 struct GNUNET_TIME_Relative latency,
 172                 uint32_t distance)
 173 {
 174
 175   if (ntohs(message->type) != MTYPE)
 176     return;
 177
 178   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received message of type %d from peer (%p) distance %d!\n",
 179                 ntohs(message->type), cls, distance);
 180
 181   GNUNET_assert (MTYPE == ntohs (message->type));
 182   GNUNET_assert (sizeof (struct GNUNET_MessageHeader) ==
 183                  ntohs (message->size));
 184   end ();
 185 }
 186
 187
 188 static size_t
 189 notify_ready (void *cls, size_t size, void *buf)
 190 {
 191   struct GNUNET_MessageHeader *hdr;
 192
 193   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 194               "Transmitting message to peer (%p) - %u!\n", cls, size);
 195   GNUNET_assert (size >= 256);
 196
 197   if (buf != NULL)
 198   {
 199     hdr = buf;
 200     hdr->size = htons (sizeof (struct GNUNET_MessageHeader));
 201     hdr->type = htons (MTYPE);
 202   }
 203
 204   return sizeof (struct GNUNET_MessageHeader);
 205 }
 206
 207
 208 static void
 209 notify_connect (void *cls,
 210                 const struct GNUNET_PeerIdentity *peer,
 211                 struct GNUNET_TIME_Relative latency,
 212                 uint32_t distance)
 213 {
 214   int peer_num = 0;
 215   int connect_num = 0;
 216
 217   if (cls == &p1)
 218     peer_num = 1;
 219   else if (cls == &p2)
 220     peer_num = 2;
 221   else if (cls == &p3)
 222     peer_num = 3;
 223
 224   if (memcmp(peer, &p1.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 225     connect_num = 1;
 226   else if (memcmp(peer, &p2.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 227     connect_num = 2;
 228   else if (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0)
 229     connect_num = 3;
 230
 231   if ((cls == &p1) && (memcmp(peer, &p3.id, sizeof(struct GNUNET_PeerIdentity)) == 0))
 232     {
 233
 234       GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 235                  "Peer 1 notified about connection to peer 3, distance %d!\n", GNUNET_i2s (peer), cls, distance);
 236
 237       GNUNET_TRANSPORT_notify_transmit_ready (p1.th,
 238                                               &p3.id,
 239                                               256, 0, TIMEOUT, &notify_ready,
 240                                               &p1);
 241     }
 242   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 243               "Peer `%d' connected to peer `%d' distance %d!\n", peer_num, connect_num, distance);
 244 }
 245
 246
 247 static void
 248 notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
 249 {
 250   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 251               "Peer `%4s' disconnected (%p)!\n",
 252               GNUNET_i2s (peer), cls);
 253 }
 254
 255
 256 static void
 257 setup_peer (struct PeerContext *p, const char *cfgname)
 258 {
 259   p->cfg = GNUNET_CONFIGURATION_create ();
 260   p->cfg_file = strdup(cfgname);
 261 #if START_ARM
 262   p->arm_pid = GNUNET_OS_start_process (NULL, NULL, "gnunet-arm",
 263                                         "gnunet-arm",
 264 #if VERBOSE_ARM
 265                                         "-L", "DEBUG",
 266 #endif
 267                                         "-c", cfgname, "-s", NULL);
 268 #endif
 269   GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_load (p->cfg, cfgname));
 270
 271   /*p->th = GNUNET_TRANSPORT_connect (sched, p->cfg,
 272                                     p,
 273                                     &notify_receive,
 274                                     &notify_connect, &notify_disconnect);*/
 275   /*GNUNET_assert (p->th != NULL);*/
 276 }
 277
 278
 279 static void
 280 exchange_hello_last (void *cls,
 281                 const struct GNUNET_MessageHeader *message)
 282 {
 283   struct PeerContext *me = cls;
 284
 285   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &exchange_hello_last, me);
 286
 287   GNUNET_assert (message != NULL);
 288   GNUNET_assert (GNUNET_OK ==
 289                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 290                                       message, &me->id));
 291
 292   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 293               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 294
 295   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 296               "Finished exchanging HELLOs, now waiting for transmission!\n");
 297
 298 }
 299
 300
 301 static void
 302 exchange_hello_next (void *cls,
 303                 const struct GNUNET_MessageHeader *message)
 304 {
 305   struct PeerContext *me = cls;
 306
 307   GNUNET_TRANSPORT_get_hello_cancel (p2.th, &exchange_hello_next, me);
 308   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 309               "Exchanging HELLO with peer (%p)!\n", cls);
 310
 311   GNUNET_assert (message != NULL);
 312   GNUNET_assert (GNUNET_OK ==
 313                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 314                                       message, &me->id));
 315
 316   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 317               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 318
 319   GNUNET_TRANSPORT_offer_hello (p3.th, message);
 320
 321   GNUNET_TRANSPORT_get_hello (p3.th, &exchange_hello_last, &p3);
 322
 323
 324 }
 325
 326
 327 static void
 328 exchange_hello (void *cls,
 329                 const struct GNUNET_MessageHeader *message)
 330 {
 331   struct PeerContext *me = cls;
 332
 333   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &exchange_hello, me);
 334   p2.th = GNUNET_TRANSPORT_connect (sched, p2.cfg,
 335                                     &p2,
 336                                     &notify_receive,
 337                                     &notify_connect, &notify_disconnect);
 338
 339   GNUNET_assert(p2.th != NULL);
 340
 341   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 342               "Exchanging HELLO with peer (%p)!\n", cls);
 343
 344   GNUNET_assert (message != NULL);
 345   GNUNET_assert (GNUNET_OK ==
 346                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 347                                       message, &me->id));
 348
 349   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 350               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 351
 352   GNUNET_TRANSPORT_offer_hello (p2.th, message);
 353   GNUNET_TRANSPORT_get_hello (p2.th, &exchange_hello_next, &p2);
 354 }
 355
 356 static void
 357 blacklist_setup_third (void *cls,
 358                 const struct GNUNET_MessageHeader *message)
 359 {
 360   struct PeerContext *me = cls;
 361   char *blacklist_filename;
 362   struct GNUNET_DISK_FileHandle *file;
 363   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 364   char *buf;
 365   size_t size;
 366
 367   GNUNET_TRANSPORT_get_hello_cancel (p3.th, &blacklist_setup_third, &p3);
 368
 369   GNUNET_assert (message != NULL);
 370   GNUNET_assert (GNUNET_OK ==
 371                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 372                                       message, &me->id));
 373
 374   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-1/blacklist");
 375   if (blacklist_filename != NULL)
 376     {
 377       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 378                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 379       GNUNET_free(blacklist_filename);
 380
 381       if (file == NULL)
 382         {
 383           GNUNET_SCHEDULER_cancel(sched, die_task);
 384           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 385           return;
 386         }
 387       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 388       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 389       GNUNET_DISK_file_write(file, buf, size);
 390       GNUNET_free_non_null(buf);
 391     }
 392
 393   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 394                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p1.cfg_file);
 395
 396   restart_transport(&p1);
 397
 398   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 399                                     &p1,
 400                                     &notify_receive,
 401                                     &notify_connect, &notify_disconnect);
 402
 403   GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 404 }
 405
 406 static void
 407 blacklist_setup_first (void *cls,
 408                 const struct GNUNET_MessageHeader *message)
 409 {
 410   struct PeerContext *me = cls;
 411   char *blacklist_filename;
 412   struct GNUNET_DISK_FileHandle *file;
 413   struct GNUNET_CRYPTO_HashAsciiEncoded peer_enc;
 414   char *buf;
 415   size_t size;
 416
 417   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &blacklist_setup_first, me);
 418   sleep(2);
 419
 420   GNUNET_assert (message != NULL);
 421   GNUNET_assert (GNUNET_OK ==
 422                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 423                                       message, &me->id));
 424
 425   GNUNET_asprintf(&blacklist_filename, "/tmp/test-gnunetd-transport-peer-3/blacklist");
 426   if (blacklist_filename != NULL)
 427     {
 428       file = GNUNET_DISK_file_open(blacklist_filename, GNUNET_DISK_OPEN_WRITE | GNUNET_DISK_OPEN_TRUNCATE | GNUNET_DISK_OPEN_CREATE,
 429                                    GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
 430       GNUNET_free(blacklist_filename);
 431
 432       if (file == NULL)
 433         {
 434           GNUNET_SCHEDULER_cancel(sched, die_task);
 435           GNUNET_SCHEDULER_add_now(sched, &end_badly, NULL);
 436           return;
 437         }
 438       GNUNET_CRYPTO_hash_to_enc(&me->id.hashPubKey, &peer_enc);
 439       size = GNUNET_asprintf(&buf, "%s:%s\n", "tcp", (char *)&peer_enc);
 440       GNUNET_DISK_file_write(file, buf, size);
 441       GNUNET_free_non_null(buf);
 442     }
 443
 444   GNUNET_TRANSPORT_disconnect(p1.th);
 445
 446   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 447                 "Restarting transport service (%p) with gnunet-arm -c %s -L DEBUG -k transport!\n", cls, p3.cfg_file);
 448   restart_transport(&p3);
 449
 450   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 451               "reconnecting to transport (%p)!\n", cls);
 452   p3.th = GNUNET_TRANSPORT_connect (sched, p3.cfg,
 453                                     &p3,
 454                                     &notify_receive,
 455                                     &notify_connect, &notify_disconnect);
 456   if (p3.th != NULL)
 457     GNUNET_TRANSPORT_get_hello (p3.th, &blacklist_setup_third, &p3);
 458   else
 459     GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 460                   "reconnecting to transport (%p) failed.!\n", cls);
 461   //GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 462 }
 463
 464
 465 static void
 466 run (void *cls,
 467      struct GNUNET_SCHEDULER_Handle *s,
 468      char *const *args,
 469      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 470 {
 471   GNUNET_assert (ok == 1);
 472   OKPP;
 473   sched = s;
 474
 475   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 476       GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES, 5), &end_badly, NULL);
 477
 478   setup_peer (&p1, "test_transport_api_dv_peer1.conf");
 479   setup_peer (&p2, "test_transport_api_dv_peer2.conf");
 480   setup_peer (&p3, "test_transport_api_dv_peer3.conf");
 481
 482   p1.th = GNUNET_TRANSPORT_connect (sched, p1.cfg,
 483                                     &p1,
 484                                     &notify_receive,
 485                                     &notify_connect, &notify_disconnect);
 486   GNUNET_assert(p1.th != NULL);
 487   /*GNUNET_assert(p2.th != NULL);
 488   GNUNET_assert(p3.th != NULL);*/
 489
 490   GNUNET_TRANSPORT_get_hello (p1.th, &blacklist_setup_first, &p1);
 491 }
 492
 493 static int
 494 check ()
 495 {
 496
 497   char *const argv[] = { "test-transport-api",
 498     "-c",
 499     "test_transport_api_data.conf",
 500 #if VERBOSE
 501     "-L", "DEBUG",
 502 #endif
 503     NULL
 504   };
 505
 506   struct GNUNET_GETOPT_CommandLineOption options[] = {
 507     GNUNET_GETOPT_OPTION_END
 508   };
 509
 510   ok = 1;
 511   GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 512                       argv, "test-transport-api", "nohelp",
 513                       options, &run, &ok);
 514   stop_arm (&p1);
 515   stop_arm (&p2);
 516   stop_arm (&p3);
 517   return ok;
 518 }
 519
 520
 521 int
 522 main (int argc, char *argv[])
 523 {
 524   int ret;
 525 #ifdef MINGW
 526   return GNUNET_SYSERR;
 527 #endif
 528
 529   GNUNET_log_setup ("test-transport-api-dv",
 530 #if VERBOSE
 531                     "DEBUG",
 532 #else
 533                     "WARNING",
 534 #endif
 535                     NULL);
 536   ret = check ();
 537   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-1");
 538   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-2");
 539   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-3");
 540   return ret;
 541 }
 542
 543 /* end of test_transport_api_dv.c */