src/transport/test_transport_api.c

   1 /*
   2      This file is part of GNUnet.
   3      (C) 2009, 2010 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 transport/test_transport_api.c
  22  * @brief base test case for transport implementations
  23  *
  24  * This test case serves as a base for tcp, udp, and udp-nat
  25  * transport test cases.  Based on the executable being run
  26  * the correct test case will be performed.  Conservation of
  27  * C code apparently.
  28  */
  29 #include "platform.h"
  30 #include "gnunet_common.h"
  31 #include "gnunet_hello_lib.h"
  32 #include "gnunet_getopt_lib.h"
  33 #include "gnunet_os_lib.h"
  34 #include "gnunet_program_lib.h"
  35 #include "gnunet_scheduler_lib.h"
  36 #include "gnunet_transport_service.h"
  37 #include "transport.h"
  38
  39 #define VERBOSE GNUNET_NO
  40
  41 #define VERBOSE_ARM GNUNET_NO
  42
  43 #define START_ARM GNUNET_YES
  44
  45 /**
  46  * How long until we give up on transmitting the message?
  47  */
  48 #define TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 300)
  49
  50 /**
  51  * How long until we give up on transmitting the message?
  52  */
  53 #define TIMEOUT_TRANSMIT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 60)
  54
  55 #define MTYPE 12345
  56
  57 struct PeerContext
  58 {
  59   struct GNUNET_CONFIGURATION_Handle *cfg;
  60   struct GNUNET_TRANSPORT_Handle *th;
  61   struct GNUNET_PeerIdentity id;
  62 #if START_ARM
  63   struct GNUNET_OS_Process *arm_proc;
  64 #endif
  65 };
  66
  67 static struct PeerContext p1;
  68
  69 static struct PeerContext p2;
  70
  71 static struct GNUNET_SCHEDULER_Handle *sched;
  72
  73 static int ok;
  74
  75 static int is_tcp;
  76
  77 static int is_tcp_nat;
  78
  79 static int is_udp;
  80
  81 static int is_udp_nat;
  82
  83 static int is_http;
  84
  85 static int is_https;
  86
  87 static  GNUNET_SCHEDULER_TaskIdentifier die_task;
  88
  89 static char * key_file_p1;
  90 static char * cert_file_p1;
  91
  92 static char * key_file_p2;
  93 static char * cert_file_p2;
  94
  95 #if VERBOSE
  96 #define OKPP do { ok++; fprintf (stderr, "Now at stage %u at %s:%u\n", ok, __FILE__, __LINE__); } while (0)
  97 #else
  98 #define OKPP do { ok++; } while (0)
  99 #endif
 100
 101
 102 static void
 103 end ()
 104 {
 105   /* do work here */
 106   GNUNET_assert (ok == 6);
 107   GNUNET_SCHEDULER_cancel (sched, die_task);
 108   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from transports!\n");
 109   GNUNET_TRANSPORT_disconnect (p1.th);
 110   GNUNET_TRANSPORT_disconnect (p2.th);
 111
 112   die_task = GNUNET_SCHEDULER_NO_TASK;
 113   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Transports disconnected, returning success!\n");
 114   ok = 0;
 115 }
 116
 117 static void
 118 stop_arm (struct PeerContext *p)
 119 {
 120 #if START_ARM
 121   if (0 != GNUNET_OS_process_kill (p->arm_proc, SIGTERM))
 122     GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "kill");
 123   GNUNET_OS_process_wait (p->arm_proc);
 124   GNUNET_OS_process_close (p->arm_proc);
 125   p->arm_proc = NULL;
 126 #endif
 127   GNUNET_CONFIGURATION_destroy (p->cfg);
 128 }
 129
 130
 131 static void
 132 end_badly ()
 133 {
 134   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from transports!\n");
 135   GNUNET_break (0);
 136   GNUNET_TRANSPORT_disconnect (p1.th);
 137   GNUNET_TRANSPORT_disconnect (p2.th);
 138   ok = 1;
 139 }
 140
 141 static void
 142 notify_receive (void *cls,
 143                 const struct GNUNET_PeerIdentity *peer,
 144                 const struct GNUNET_MessageHeader *message,
 145                 struct GNUNET_TIME_Relative latency,
 146                 uint32_t distance)
 147 {
 148   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "ok is (%d)!\n",
 149               ok);
 150
 151   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received message of type %d from peer (%p)!\n",
 152                 ntohs(message->type), cls);
 153
 154   GNUNET_assert (ok == 5);
 155   OKPP;
 156
 157   GNUNET_assert (MTYPE == ntohs (message->type));
 158   GNUNET_assert (sizeof (struct GNUNET_MessageHeader) ==
 159                  ntohs (message->size));
 160   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Received message from peer (%p)!\n",
 161               cls);
 162   end ();
 163 }
 164
 165
 166 static size_t
 167 notify_ready (void *cls, size_t size, void *buf)
 168 {
 169   struct GNUNET_MessageHeader *hdr;
 170
 171   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 172               "Transmitting message to peer (%p) - %u!\n", cls, sizeof (struct GNUNET_MessageHeader));
 173   GNUNET_assert (size >= 256);
 174   GNUNET_assert (ok == 4);
 175   OKPP;
 176
 177   if (buf != NULL)
 178   {
 179     hdr = buf;
 180     hdr->size = htons (sizeof (struct GNUNET_MessageHeader));
 181     hdr->type = htons (MTYPE);
 182   }
 183
 184   return sizeof (struct GNUNET_MessageHeader);
 185 }
 186
 187
 188 static void
 189 notify_connect (void *cls,
 190                 const struct GNUNET_PeerIdentity *peer,
 191                 struct GNUNET_TIME_Relative latency,
 192                 uint32_t distance)
 193 {
 194   if (cls == &p1)
 195     {
 196       GNUNET_SCHEDULER_cancel (sched, die_task);
 197       die_task = GNUNET_SCHEDULER_add_delayed (sched,
 198                                                TIMEOUT_TRANSMIT,
 199                                                &end_badly, NULL);
 200
 201       GNUNET_TRANSPORT_notify_transmit_ready (p1.th,
 202                                               &p2.id,
 203                                               256, 0, TIMEOUT, &notify_ready,
 204                                               &p1);
 205     }
 206   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 207               "Peer `%4s' connected to us (%p)!\n", GNUNET_i2s (peer), cls);
 208 }
 209
 210
 211 static void
 212 notify_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
 213 {
 214   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 215               "Peer `%4s' disconnected (%p)!\n",
 216               GNUNET_i2s (peer), cls);
 217 }
 218
 219
 220 static void
 221 setup_peer (struct PeerContext *p, const char *cfgname)
 222 {
 223   p->cfg = GNUNET_CONFIGURATION_create ();
 224 #if START_ARM
 225   p->arm_proc = GNUNET_OS_start_process (NULL, NULL, "gnunet-service-arm",
 226                                         "gnunet-service-arm",
 227 #if VERBOSE_ARM
 228                                         "-L", "DEBUG",
 229 #endif
 230                                         "-c", cfgname, NULL);
 231 #endif
 232   GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_load (p->cfg, cfgname));
 233
 234   if (is_https)
 235   {
 236           struct stat sbuf;
 237           if (p==&p1)
 238           {
 239                   if (GNUNET_CONFIGURATION_have_value (p->cfg,
 240                                                                                            "transport-https", "KEY_FILE"))
 241                                 GNUNET_CONFIGURATION_get_value_string (p->cfg, "transport-https", "KEY_FILE", &key_file_p1);
 242                   if (key_file_p1==NULL)
 243                           GNUNET_asprintf(&key_file_p1,"https.key");
 244                   if (0 == stat (key_file_p1, &sbuf ))
 245                   {
 246                           if (0 == remove(key_file_p1))
 247                               GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Successfully removed existing private key file `%s'\n",key_file_p1);
 248                           else
 249                                   GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove private key file `%s'\n",key_file_p1);
 250                   }
 251                   if (GNUNET_CONFIGURATION_have_value (p->cfg,"transport-https", "CERT_FILE"))
 252                           GNUNET_CONFIGURATION_get_value_string (p->cfg, "transport-https", "CERT_FILE", &cert_file_p1);
 253                   if (cert_file_p1==NULL)
 254                           GNUNET_asprintf(&cert_file_p1,"https.cert");
 255                   if (0 == stat (cert_file_p1, &sbuf ))
 256                   {
 257                           if (0 == remove(cert_file_p1))
 258                               GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Successfully removed existing certificate file `%s'\n",cert_file_p1);
 259                           else
 260                                   GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove existing certificate file `%s'\n",cert_file_p1);
 261                   }
 262           }
 263           else if (p==&p2)
 264           {
 265                   if (GNUNET_CONFIGURATION_have_value (p->cfg,
 266                                                                                            "transport-https", "KEY_FILE"))
 267                                 GNUNET_CONFIGURATION_get_value_string (p->cfg, "transport-https", "KEY_FILE", &key_file_p2);
 268                   if (key_file_p2==NULL)
 269                           GNUNET_asprintf(&key_file_p2,"https.key");
 270                   if (0 == stat (key_file_p2, &sbuf ))
 271                   {
 272                           if (0 == remove(key_file_p2))
 273                               GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Successfully removed existing private key file `%s'\n",key_file_p2);
 274                           else
 275                                   GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove private key file `%s'\n",key_file_p2);
 276                   }
 277                   if (GNUNET_CONFIGURATION_have_value (p->cfg,"transport-https", "CERT_FILE"))
 278                           GNUNET_CONFIGURATION_get_value_string (p->cfg, "transport-https", "CERT_FILE", &cert_file_p2);
 279                   if (cert_file_p2==NULL)
 280                           GNUNET_asprintf(&cert_file_p2,"https.cert");
 281                   if (0 == stat (cert_file_p2, &sbuf ))
 282                   {
 283                           if (0 == remove(cert_file_p2))
 284                               GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Successfully removed existing certificate file `%s'\n",cert_file_p2);
 285                           else
 286                                   GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove existing certificate file `%s'\n",cert_file_p2);
 287                   }
 288           }
 289   }
 290
 291   p->th = GNUNET_TRANSPORT_connect (sched, p->cfg,
 292                                     NULL, p,
 293                                     &notify_receive,
 294                                     &notify_connect, &notify_disconnect);
 295   GNUNET_assert (p->th != NULL);
 296 }
 297
 298
 299 static void
 300 exchange_hello_last (void *cls,
 301                      const struct GNUNET_MessageHeader *message)
 302 {
 303   struct PeerContext *me = cls;
 304
 305   GNUNET_TRANSPORT_get_hello_cancel (p2.th, &exchange_hello_last, me);
 306   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 307               "Exchanging HELLO with peer (%p)!\n", cls);
 308   GNUNET_assert (ok >= 3);
 309   OKPP;
 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   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 315               "Finished exchanging HELLOs, now waiting for transmission!\n");
 316 }
 317
 318 static void
 319 exchange_hello (void *cls,
 320                 const struct GNUNET_MessageHeader *message)
 321 {
 322   struct PeerContext *me = cls;
 323
 324   GNUNET_TRANSPORT_get_hello_cancel (p1.th, &exchange_hello, me);
 325   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 326               "Exchanging HELLO with peer (%p)!\n", cls);
 327   GNUNET_assert (ok >= 2);
 328   OKPP;
 329   GNUNET_assert (message != NULL);
 330   GNUNET_assert (GNUNET_OK ==
 331                  GNUNET_HELLO_get_id ((const struct GNUNET_HELLO_Message *)
 332                                       message, &me->id));
 333
 334   GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
 335               "Received HELLO size %d\n", GNUNET_HELLO_size((const struct GNUNET_HELLO_Message *)message));
 336
 337   GNUNET_TRANSPORT_offer_hello (p2.th, message);
 338   GNUNET_TRANSPORT_get_hello (p2.th, &exchange_hello_last, &p2);
 339 }
 340
 341
 342 static void
 343 run (void *cls,
 344      struct GNUNET_SCHEDULER_Handle *s,
 345      char *const *args,
 346      const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
 347 {
 348   GNUNET_assert (ok == 1);
 349   OKPP;
 350   sched = s;
 351   die_task = GNUNET_SCHEDULER_add_delayed (sched,
 352                                            TIMEOUT,
 353                                            &end_badly, NULL);
 354
 355   if (is_udp)
 356     {
 357       setup_peer (&p1, "test_transport_api_udp_peer1.conf");
 358       setup_peer (&p2, "test_transport_api_udp_peer2.conf");
 359     }
 360   else if (is_tcp)
 361     {
 362       setup_peer (&p1, "test_transport_api_tcp_peer1.conf");
 363       setup_peer (&p2, "test_transport_api_tcp_peer2.conf");
 364     }
 365   else if (is_tcp_nat)
 366     {
 367       setup_peer (&p1, "test_transport_api_tcp_nat_peer1.conf");
 368       setup_peer (&p2, "test_transport_api_tcp_nat_peer2.conf");
 369     }
 370   else if (is_udp_nat)
 371     {
 372       setup_peer (&p1, "test_transport_api_udp_nat_peer1.conf");
 373       setup_peer (&p2, "test_transport_api_udp_nat_peer2.conf");
 374     }
 375   else if (is_http)
 376     {
 377       setup_peer (&p1, "test_transport_api_http_peer1.conf");
 378       setup_peer (&p2, "test_transport_api_http_peer2.conf");
 379     }
 380   else if (is_https)
 381         {
 382           setup_peer (&p1, "test_transport_api_https_peer1.conf");
 383           setup_peer (&p2, "test_transport_api_https_peer2.conf");
 384         }
 385   GNUNET_assert(p1.th != NULL);
 386   GNUNET_assert(p2.th != NULL);
 387
 388   GNUNET_TRANSPORT_get_hello (p1.th, &exchange_hello, &p1);
 389 }
 390
 391 static int
 392 check ()
 393 {
 394   static char *const argv[] = { "test-transport-api",
 395     "-c",
 396     "test_transport_api_data.conf",
 397 #if VERBOSE
 398     "-L", "DEBUG",
 399 #endif
 400     NULL
 401   };
 402   static struct GNUNET_GETOPT_CommandLineOption options[] = {
 403     GNUNET_GETOPT_OPTION_END
 404   };
 405
 406 #if WRITECONFIG
 407   setTransportOptions("test_transport_api_data.conf");
 408 #endif
 409   ok = 1;
 410   GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
 411                       argv, "test-transport-api", "nohelp",
 412                       options, &run, &ok);
 413   stop_arm (&p1);
 414   stop_arm (&p2);
 415
 416   if (is_https)
 417   {
 418           struct stat sbuf;
 419           if (0 == stat (cert_file_p1, &sbuf ))
 420           {
 421                   if (0 == remove(cert_file_p1))
 422                           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully removed existing certificate file `%s'\n",cert_file_p1);
 423                   else
 424                           GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove certfile `%s'\n",cert_file_p1);
 425           }
 426
 427           if (0 == stat (key_file_p1, &sbuf ))
 428           {
 429                   if (0 == remove(key_file_p1))
 430                           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully removed private key file `%s'\n",key_file_p1);
 431                   else
 432                           GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to private key file `%s'\n",key_file_p1);
 433           }
 434
 435           if (0 == stat (cert_file_p2, &sbuf ))
 436           {
 437                   if (0 == remove(cert_file_p2))
 438                           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully removed existing certificate file `%s'\n",cert_file_p2);
 439                   else
 440                           GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to remove certfile `%s'\n",cert_file_p2);
 441           }
 442
 443           if (0 == stat (key_file_p2, &sbuf ))
 444           {
 445                   if (0 == remove(key_file_p2))
 446                           GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Successfully removed private key file `%s'\n",key_file_p2);
 447                   else
 448                           GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to private key file `%s'\n",key_file_p2);
 449           }
 450           GNUNET_free(key_file_p1);
 451           GNUNET_free(key_file_p2);
 452           GNUNET_free(cert_file_p1);
 453           GNUNET_free(cert_file_p2);
 454   }
 455   return ok;
 456 }
 457
 458
 459 static char *
 460 get_path_from_PATH ()
 461 {
 462   char *path;
 463   char *pos;
 464   char *end;
 465   char *buf;
 466   const char *p;
 467
 468   p = getenv ("PATH");
 469   if (p == NULL)
 470     return NULL;
 471   path = GNUNET_strdup (p);     /* because we write on it */
 472   buf = GNUNET_malloc (strlen (path) + 20);
 473   pos = path;
 474
 475   while (NULL != (end = strchr (pos, PATH_SEPARATOR)))
 476     {
 477       *end = '\0';
 478       sprintf (buf, "%s/%s", pos, "gnunet-nat-server");
 479       if (GNUNET_DISK_file_test (buf) == GNUNET_YES)
 480         {
 481           GNUNET_free (path);
 482           return buf;
 483         }
 484       pos = end + 1;
 485     }
 486   sprintf (buf, "%s/%s", pos, "gnunet-nat-server");
 487   GNUNET_free (path);
 488   if (GNUNET_DISK_file_test (buf) == GNUNET_YES)
 489     return buf;
 490   GNUNET_free (buf);
 491   return NULL;
 492 }
 493
 494
 495 static int
 496 check_gnunet_nat_server()
 497 {
 498   struct stat statbuf;
 499   char *p;
 500
 501   p = get_path_from_PATH ();
 502   if (p == NULL)
 503     return GNUNET_NO;
 504   if (0 != STAT (p, &statbuf))
 505     {
 506       GNUNET_free (p);
 507       return GNUNET_SYSERR;
 508     }
 509   GNUNET_free (p);
 510   if ( (0 != (statbuf.st_mode & S_ISUID)) &&
 511        (statbuf.st_uid == 0) )
 512     return GNUNET_YES;
 513   return GNUNET_NO;
 514 }
 515
 516 int
 517 main (int argc, char *argv[])
 518 {
 519   int ret;
 520 #ifdef MINGW
 521   return GNUNET_SYSERR;
 522 #endif
 523
 524   GNUNET_log_setup ("test-transport-api",
 525 #if VERBOSE
 526                     "DEBUG",
 527 #else
 528                     "WARNING",
 529 #endif
 530                     NULL);
 531
 532   if (strstr(argv[0], "tcp_nat") != NULL)
 533     {
 534       is_tcp_nat = GNUNET_YES;
 535       if (check_gnunet_nat_server() != GNUNET_OK)
 536         {
 537           GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 538                       "`%s' not properly installed, cannot run NAT test!\n",
 539                       "gnunet-nat-server");
 540           return 0;
 541         }
 542     }
 543   else if (strstr(argv[0], "tcp") != NULL)
 544     {
 545       is_tcp = GNUNET_YES;
 546     }
 547   else if (strstr(argv[0], "udp_nat") != NULL)
 548     {
 549       is_udp_nat = GNUNET_YES;
 550       if (check_gnunet_nat_server() != GNUNET_OK)
 551         {
 552           GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
 553                       "`%s' not properly installed, cannot run NAT test!\n",
 554                       "gnunet-nat-server");
 555           return 0;
 556         }
 557     }
 558   else if (strstr(argv[0], "udp") != NULL)
 559     {
 560       is_udp = GNUNET_YES;
 561     }
 562   else if (strstr(argv[0], "https") != NULL)
 563     {
 564       is_https = GNUNET_YES;
 565     }
 566   else if (strstr(argv[0], "http") != NULL)
 567     {
 568       is_http = GNUNET_YES;
 569     }
 570
 571   ret = check ();
 572   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-1");
 573   GNUNET_DISK_directory_remove ("/tmp/test-gnunetd-transport-peer-2");
 574   return ret;
 575 }
 576
 577 /* end of test_transport_api.c */