2 This file is part of GNUnet.
3 (C) 2009 Christian Grothoff (and other contributing authors)
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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
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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.
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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.
21 * @file dht/test_dht_twopeer_get_put.c
22 * @brief base testcase for testing DHT service with
25 * This testcase starts peers using the GNUNET_TESTING_daemons_start
26 * function call. On peer start, connects to the peers DHT service
27 * by calling GNUNET_DHT_connected. Once notified about all peers
28 * being started (by the peers_started_callback function), calls
29 * GNUNET_TESTING_connect_topology, which connects the peers in a
30 * "straight line" topology. On notification that all peers have
31 * been properly connected, calls the do_get function which initiates
32 * a GNUNET_DHT_get from the *second* peer. Once the GNUNET_DHT_get
33 * function starts, runs the do_put function to insert data at the first peer.
34 * If the GET is successful, schedules finish_testing
35 * to stop the test and shut down peers. If GET is unsuccessful
36 * after GET_TIMEOUT seconds, prints an error message and shuts down
40 #include "gnunet_testing_lib.h"
41 #include "gnunet_core_service.h"
42 #include "gnunet_dht_service.h"
43 #include "block_dns.h"
44 #include "gnunet_signatures.h"
47 #define VERBOSE GNUNET_NO
49 /* Timeout for entire testcase */
50 #define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 40)
52 /* Timeout for waiting for replies to get requests */
53 #define GET_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30)
55 /* If number of peers not in config file, use this number */
56 #define DEFAULT_NUM_PEERS 2
63 * Directory to store temp data in, defined in config file
65 static char *test_directory;
68 * Variable used to store the number of connections we should wait for.
70 static unsigned int expected_connections;
73 * Variable used to keep track of how many peers aren't yet started.
75 static unsigned long long peers_left;
78 * Handle to the set of all peers run for this test.
80 static struct GNUNET_TESTING_PeerGroup *pg;
83 * Global handle we will use for GET requests.
85 struct GNUNET_DHT_GetHandle *global_get_handle;
89 * Total number of peers to run, set based on config file.
91 static unsigned long long num_peers;
94 * Global used to count how many connections we have currently
95 * been notified about (how many times has topology_callback been called
98 static unsigned int total_connections;
101 * Global used to count how many failed connections we have
102 * been notified about (how many times has topology_callback
103 * been called with failure?)
105 static unsigned int failed_connections;
107 /* Task handle to use to schedule test failure */
108 GNUNET_SCHEDULER_TaskIdentifier die_task;
110 /* Global return value (0 for success, anything else for failure) */
114 struct GNUNET_DNS_Record data;
118 * Peer identity of the first peer started.
120 static struct GNUNET_PeerIdentity peer1id;
123 * Peer identity of the second peer started.
125 static struct GNUNET_PeerIdentity peer2id;
128 * Handle to the first peers DHT service (via the API)
130 static struct GNUNET_DHT_Handle *peer1dht;
133 * Handle to the second peers DHT service (via the API)
135 static struct GNUNET_DHT_Handle *peer2dht;
138 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
141 * Check whether peers successfully shut down.
144 shutdown_callback (void *cls, const char *emsg)
154 * Function scheduled to be run on the successful completion of this
155 * testcase. Specifically, called when our get request completes.
158 finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
160 GNUNET_assert (pg != NULL);
161 GNUNET_assert (peer1dht != NULL);
162 GNUNET_assert (peer2dht != NULL);
163 GNUNET_DHT_disconnect (peer1dht);
164 GNUNET_DHT_disconnect (peer2dht);
165 GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
170 * Continuation for the GNUNET_DHT_get_stop call, so that we don't shut
171 * down the peers without freeing memory associated with GET request.
174 end_badly_cont (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
176 if (peer1dht != NULL)
177 GNUNET_DHT_disconnect (peer1dht);
179 if (peer2dht != NULL)
180 GNUNET_DHT_disconnect (peer2dht);
183 GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
187 * Check if the get_handle is being used, if so stop the request. Either
188 * way, schedule the end_badly_cont function which actually shuts down the
192 end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
194 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failing test with error: `%s'!\n",
196 if (global_get_handle != NULL)
198 GNUNET_DHT_get_stop (global_get_handle);
199 global_get_handle = NULL;
201 GNUNET_SCHEDULER_add_now (&end_badly_cont, NULL);
206 * Iterator called if the GET request initiated returns a response.
209 * @param exp when will this value expire
210 * @param key key of the result
211 * @param type type of the result
212 * @param size number of bytes in data
213 * @param data pointer to the result data
216 get_result_iterator (void *cls, struct GNUNET_TIME_Absolute exp,
217 const GNUNET_HashCode * key,
218 const struct GNUNET_PeerIdentity *get_path,
219 unsigned int get_path_size,
220 const struct GNUNET_PeerIdentity *put_path,
221 unsigned int put_path_size, enum GNUNET_BLOCK_Type type,
222 size_t size, const void *result_data)
224 GNUNET_HashCode original_key; /* Key data was stored data under */
225 char original_data[4]; /* Made up data that was stored */
227 memset (&original_key, 42, sizeof (GNUNET_HashCode)); /* Set the key to what it was set to previously */
228 memset (original_data, 43, sizeof (original_data));
231 if ((sizeof (original_data) != size) ||
232 (0 != memcmp (&data.service_descriptor, key, sizeof (GNUNET_HashCode))) ||
233 (0 != memcmp ((char *) &data, result_data, sizeof (original_data))))
235 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
236 "Key or data is not the same as was inserted!\n");
237 GNUNET_SCHEDULER_cancel (die_task);
238 GNUNET_SCHEDULER_add_now (&end_badly,
239 "key or data mismatch in get response!\n");
243 if ((sizeof (original_data) != size) ||
244 (0 != memcmp (&original_key, key, sizeof (GNUNET_HashCode))) ||
245 (0 != memcmp (original_data, result_data, sizeof (original_data))))
247 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
248 "Key or data is not the same as was inserted!\n");
249 GNUNET_SCHEDULER_cancel (die_task);
250 GNUNET_SCHEDULER_add_now (&end_badly,
251 "key or data mismatch in get response!\n");
256 GNUNET_SCHEDULER_cancel (die_task);
257 GNUNET_DHT_get_stop (global_get_handle);
258 GNUNET_SCHEDULER_add_now (&finish_testing, NULL);
262 * Start the GET request for the same key/data that was inserted.
265 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
267 GNUNET_HashCode key; /* Key for data lookup */
270 memcpy (&key, &data.service_descriptor, sizeof (GNUNET_HashCode));
272 memset (&key, 42, sizeof (GNUNET_HashCode)); /* Set the key to the same thing as when data was inserted */
275 GNUNET_DHT_get_start (peer2dht, GNUNET_TIME_relative_get_forever (),
277 GNUNET_BLOCK_TYPE_DNS,
279 GNUNET_BLOCK_TYPE_TEST,
281 &key, 1, GNUNET_DHT_RO_NONE, NULL, 0,
282 &get_result_iterator, NULL);
283 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
284 (GNUNET_TIME_UNIT_SECONDS, 10), &do_put, NULL);
288 * Called when the PUT request has been transmitted to the DHT service.
289 * Schedule the GET request for some time in the future.
292 put_finished (void *cls, int success)
294 GNUNET_SCHEDULER_cancel (die_task);
296 GNUNET_SCHEDULER_add_delayed (GET_TIMEOUT, &end_badly,
297 "waiting for get response (data not found)");
303 * Set up some data, and call API PUT function
306 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
308 GNUNET_HashCode key; /* Made up key to store data under */
309 char data[4]; /* Made up data to store */
311 memset (&key, 42, sizeof (GNUNET_HashCode)); /* Set the key to something simple so we can issue GET request */
312 memset (data, 43, sizeof (data));
314 /* Insert the data at the first peer */
315 GNUNET_DHT_put (peer1dht, &key, 1, GNUNET_DHT_RO_NONE, GNUNET_BLOCK_TYPE_TEST,
316 sizeof (data), data, GNUNET_TIME_UNIT_FOREVER_ABS,
317 GNUNET_TIME_UNIT_FOREVER_REL, &put_finished, NULL);
322 * Set up some data, and call API PUT function
325 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
327 char *name = "philipptoelke.gnunet.";
328 size_t size = sizeof (struct GNUNET_DNS_Record);
330 memset (&data, 0, size);
332 data.purpose.size = htonl (size - sizeof (struct GNUNET_CRYPTO_RsaSignature));
333 data.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_DNS_RECORD;
335 GNUNET_CRYPTO_hash (name, strlen (name) + 1, &data.service_descriptor);
337 data.service_type = htonl (GNUNET_DNS_SERVICE_TYPE_UDP);
338 data.ports = htons (69);
342 GNUNET_asprintf (&keyfile, "/tmp/test_dns_data_key");
343 struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key =
344 GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
345 GNUNET_free (keyfile);
346 GNUNET_assert (my_private_key != NULL);
348 GNUNET_CRYPTO_rsa_key_get_public (my_private_key, &data.peer);
350 data.expiration_time =
351 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS);
355 GNUNET_CRYPTO_rsa_sign (my_private_key, &data.purpose, &data.signature))
357 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "could not sign DNS_Record\n");
360 GNUNET_CRYPTO_rsa_key_free (my_private_key);
362 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting with key %08x\n",
363 *((unsigned int *) &data.service_descriptor));
365 GNUNET_DHT_put (peer1dht, &data.service_descriptor, DEFAULT_PUT_REPLICATION,
366 GNUNET_DHT_RO_NONE, GNUNET_BLOCK_TYPE_DNS, size,
368 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS),
369 GNUNET_TIME_UNIT_MINUTES, &put_finished, NULL);
374 * This function is called whenever a connection attempt is finished between two of
375 * the started peers (started with GNUNET_TESTING_daemons_start). The total
376 * number of times this function is called should equal the number returned
377 * from the GNUNET_TESTING_connect_topology call.
379 * The emsg variable is NULL on success (peers connected), and non-NULL on
380 * failure (peers failed to connect).
383 topology_callback (void *cls, const struct GNUNET_PeerIdentity *first,
384 const struct GNUNET_PeerIdentity *second, uint32_t distance,
385 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
386 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
387 struct GNUNET_TESTING_Daemon *first_daemon,
388 struct GNUNET_TESTING_Daemon *second_daemon,
395 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
396 "connected peer %s to peer %s, distance %u\n",
397 first_daemon->shortname, second_daemon->shortname, distance);
403 failed_connections++;
404 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
405 "Failed to connect peer %s to peer %s with error :\n%s\n",
406 first_daemon->shortname, second_daemon->shortname, emsg);
410 if (total_connections == expected_connections)
413 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
414 "Created %d total connections, which is our target number! Starting next phase of testing.\n",
417 GNUNET_SCHEDULER_cancel (die_task);
419 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, "from test gets");
421 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
422 (GNUNET_TIME_UNIT_SECONDS, 2), &do_get, NULL);
424 else if (total_connections + failed_connections == expected_connections)
426 GNUNET_SCHEDULER_cancel (die_task);
428 GNUNET_SCHEDULER_add_now (&end_badly,
429 "from topology_callback (too many failed connections)");
435 * Callback which is called whenever a peer is started (as a result of the
436 * GNUNET_TESTING_daemons_start call.
438 * @param cls closure argument given to GNUNET_TESTING_daemons_start
439 * @param id the GNUNET_PeerIdentity of the started peer
440 * @param cfg the configuration for this specific peer (needed to connect
442 * @param d the handle to the daemon started
443 * @param emsg NULL if peer started, non-NULL on error
446 peers_started_callback (void *cls, const struct GNUNET_PeerIdentity *id,
447 const struct GNUNET_CONFIGURATION_Handle *cfg,
448 struct GNUNET_TESTING_Daemon *d, const char *emsg)
452 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
453 "Failed to start daemon with error: `%s'\n", emsg);
456 GNUNET_assert (id != NULL);
458 /* This is the first peer started */
459 if (peers_left == num_peers)
461 memcpy (&peer1id, id, sizeof (struct GNUNET_PeerIdentity)); /* Save the peer id */
462 peer1dht = GNUNET_DHT_connect (cfg, 100); /* Connect to the first peers DHT service */
463 if (peer1dht == NULL) /* If DHT connect failed */
465 GNUNET_SCHEDULER_cancel (die_task);
466 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
469 else /* This is the second peer started */
471 memcpy (&peer2id, id, sizeof (struct GNUNET_PeerIdentity)); /* Same as for first peer... */
472 peer2dht = GNUNET_DHT_connect (cfg, 100);
473 if (peer2dht == NULL)
475 GNUNET_SCHEDULER_cancel (die_task);
476 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
480 /* Decrement number of peers left to start */
483 if (peers_left == 0) /* Indicates all peers started */
486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
487 "All %d daemons started, now connecting peers!\n", num_peers);
489 expected_connections = -1;
490 if ((pg != NULL)) /* Sanity check */
492 /* Connect peers in a "straight line" topology, return the number of expected connections */
493 expected_connections =
494 GNUNET_TESTING_connect_topology (pg, GNUNET_TESTING_TOPOLOGY_LINE,
495 GNUNET_TESTING_TOPOLOGY_OPTION_ALL,
496 0.0, TIMEOUT, 12, NULL, NULL);
499 /* Cancel current timeout fail task */
500 GNUNET_SCHEDULER_cancel (die_task);
501 if (expected_connections == GNUNET_SYSERR) /* Some error happened */
503 GNUNET_SCHEDULER_add_now (&end_badly,
504 "from connect topology (bad return)");
506 /* Schedule timeout on failure task */
508 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
509 "from connect topology (timeout)");
515 run (void *cls, char *const *args, const char *cfgfile,
516 const struct GNUNET_CONFIGURATION_Handle *cfg)
519 /* Get path from configuration file */
521 GNUNET_CONFIGURATION_get_value_string (cfg, "paths", "servicehome",
528 /* Get number of peers to start from configuration (should be two) */
530 GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
532 num_peers = DEFAULT_NUM_PEERS;
534 /* Set peers_left so we know when all peers started */
535 peers_left = num_peers;
537 /* Set up a task to end testing if peer start fails */
539 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
540 "didn't start all daemons in reasonable amount of time!!!");
542 /* Start num_peers peers, call peers_started_callback on peer start, topology_callback on peer connect */
543 /* Read the API documentation for other parameters! */
544 pg = GNUNET_TESTING_daemons_start (cfg, num_peers, 2, 2, TIMEOUT, NULL, NULL,
545 &peers_started_callback, NULL,
546 &topology_callback, NULL, NULL);
555 /* Arguments for GNUNET_PROGRAM_run */
556 char *const argv[] = { "test-dht-twopeer-get-put", /* Name to give running binary */
558 "test_dht_twopeer_data.conf", /* Config file to use */
564 struct GNUNET_GETOPT_CommandLineOption options[] = {
565 GNUNET_GETOPT_OPTION_END
567 /* Run the run function as a new program */
569 GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1, argv,
570 "test-dht-twopeer-get-put", "nohelp", options, &run,
572 if (ret != GNUNET_OK)
574 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
575 "`test-dht-twopeer': Failed with error code %d\n", ret);
581 main (int argc, char *argv[])
585 GNUNET_log_setup ("test-dht-twopeer",
594 * Need to remove base directory, subdirectories taken care
595 * of by the testing framework.
597 if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
599 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
600 "Failed to remove testing directory %s\n", test_directory);
605 /* end of test_dht_twopeer_get_put.c */