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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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
21 * @file dht/test_dht_twopeer_put_get.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, runs the do_put function to insert data
32 * at the first peer. Once the GNUNET_DHT_put function completes,
33 * calls the do_get function which initiates a GNUNET_DHT_get from
34 * the *second* peer. 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_MINUTES, 5)
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 * Check whether peers successfully shut down.
141 shutdown_callback (void *cls, const char *emsg)
151 * Function scheduled to be run on the successful completion of this
152 * testcase. Specifically, called when our get request completes.
155 finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
157 GNUNET_assert (pg != NULL);
158 GNUNET_assert (peer1dht != NULL);
159 GNUNET_assert (peer2dht != NULL);
160 GNUNET_DHT_disconnect (peer1dht);
161 GNUNET_DHT_disconnect (peer2dht);
162 GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
167 * Continuation for the GNUNET_DHT_get_stop call, so that we don't shut
168 * down the peers without freeing memory associated with GET request.
171 end_badly_cont (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
173 if (peer1dht != NULL)
174 GNUNET_DHT_disconnect (peer1dht);
176 if (peer2dht != NULL)
177 GNUNET_DHT_disconnect (peer2dht);
180 GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
184 * Check if the get_handle is being used, if so stop the request. Either
185 * way, schedule the end_badly_cont function which actually shuts down the
189 end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
191 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failing test with error: `%s'!\n",
193 if (global_get_handle != NULL)
195 GNUNET_DHT_get_stop (global_get_handle);
196 global_get_handle = NULL;
198 GNUNET_SCHEDULER_add_now (&end_badly_cont, NULL);
203 * Iterator called if the GET request initiated returns a response.
206 * @param exp when will this value expire
207 * @param key key of the result
208 * @param type type of the result
209 * @param size number of bytes in data
210 * @param data pointer to the result data
213 get_result_iterator (void *cls, struct GNUNET_TIME_Absolute exp,
214 const GNUNET_HashCode * key,
215 const struct GNUNET_PeerIdentity *const *get_path,
216 const struct GNUNET_PeerIdentity *const *put_path,
217 enum GNUNET_BLOCK_Type type, size_t size,
218 const void *result_data)
220 GNUNET_HashCode original_key; /* Key data was stored data under */
221 char original_data[4]; /* Made up data that was stored */
223 memset (&original_key, 42, sizeof (GNUNET_HashCode)); /* Set the key to what it was set to previously */
224 memset (original_data, 43, sizeof (original_data));
227 if ((0 != memcmp (&data.service_descriptor, key, sizeof (GNUNET_HashCode))) ||
228 (0 != memcmp ((char *) &data, result_data, sizeof (original_data))))
230 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
231 "Key or data is not the same as was inserted!\n");
232 GNUNET_SCHEDULER_cancel (die_task);
233 GNUNET_SCHEDULER_add_now (&end_badly,
234 "key or data mismatch in get response!\n");
238 if ((0 != memcmp (&original_key, key, sizeof (GNUNET_HashCode))) ||
239 (0 != memcmp (original_data, result_data, sizeof (original_data))))
241 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
242 "Key or data is not the same as was inserted!\n");
243 GNUNET_SCHEDULER_cancel (die_task);
244 GNUNET_SCHEDULER_add_now (&end_badly,
245 "key or data mismatch in get response!\n");
250 GNUNET_SCHEDULER_cancel (die_task);
251 GNUNET_DHT_get_stop (global_get_handle);
252 GNUNET_SCHEDULER_add_now (&finish_testing, NULL);
256 * Start the GET request for the same key/data that was inserted.
259 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
261 GNUNET_HashCode key; /* Key for data lookup */
264 memcpy (&key, &data.service_descriptor, sizeof (GNUNET_HashCode));
266 memset (&key, 42, sizeof (GNUNET_HashCode)); /* Set the key to the same thing as when data was inserted */
269 GNUNET_DHT_get_start (peer2dht, GNUNET_TIME_relative_get_forever (),
271 GNUNET_BLOCK_TYPE_DNS,
273 GNUNET_BLOCK_TYPE_TEST,
275 &key, DEFAULT_GET_REPLICATION, GNUNET_DHT_RO_NONE,
276 NULL, 0, NULL, 0, &get_result_iterator, NULL);
280 * Called when the PUT request has been transmitted to the DHT service.
281 * Schedule the GET request for some time in the future.
284 put_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
286 GNUNET_SCHEDULER_cancel (die_task);
288 GNUNET_SCHEDULER_add_delayed (GET_TIMEOUT, &end_badly,
289 "waiting for get response (data not found)");
290 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
291 (GNUNET_TIME_UNIT_SECONDS, 10), &do_get, NULL);
297 * Set up some data, and call API PUT function
300 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
302 GNUNET_HashCode key; /* Made up key to store data under */
303 char data[4]; /* Made up data to store */
305 memset (&key, 42, sizeof (GNUNET_HashCode)); /* Set the key to something simple so we can issue GET request */
306 memset (data, 43, sizeof (data));
308 /* Insert the data at the first peer */
309 GNUNET_DHT_put (peer1dht, &key, DEFAULT_PUT_REPLICATION, GNUNET_DHT_RO_NONE,
310 GNUNET_BLOCK_TYPE_TEST, sizeof (data), data,
311 GNUNET_TIME_UNIT_FOREVER_ABS, GNUNET_TIME_UNIT_FOREVER_REL,
312 &put_finished, NULL);
317 * Set up some data, and call API PUT function
320 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
322 char *name = "philipptoelke.gnunet.";
323 size_t size = sizeof (struct GNUNET_DNS_Record);
325 memset (&data, 0, size);
327 data.purpose.size = htonl (size - sizeof (struct GNUNET_CRYPTO_RsaSignature));
328 data.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_DNS_RECORD;
330 GNUNET_CRYPTO_hash (name, strlen (name) + 1, &data.service_descriptor);
332 data.service_type = htonl (GNUNET_DNS_SERVICE_TYPE_UDP);
333 data.ports = htons (69);
337 GNUNET_asprintf (&keyfile, "/tmp/test_dns_data_key");
338 struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key =
339 GNUNET_CRYPTO_rsa_key_create_from_file (keyfile);
340 GNUNET_free (keyfile);
341 GNUNET_assert (my_private_key != NULL);
343 GNUNET_CRYPTO_rsa_key_get_public (my_private_key, &data.peer);
345 data.expiration_time =
346 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS);
350 GNUNET_CRYPTO_rsa_sign (my_private_key, &data.purpose, &data.signature))
352 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "could not sign DNS_Record\n");
355 GNUNET_CRYPTO_rsa_key_free (my_private_key);
357 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting with key %08x\n",
358 *((unsigned int *) &data.service_descriptor));
360 GNUNET_DHT_put (peer1dht, &data.service_descriptor, DEFAULT_PUT_REPLICATION,
361 GNUNET_DHT_RO_NONE, GNUNET_BLOCK_TYPE_DNS, size,
363 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS),
364 GNUNET_TIME_UNIT_MINUTES, &put_finished, NULL);
369 * This function is called whenever a connection attempt is finished between two of
370 * the started peers (started with GNUNET_TESTING_daemons_start). The total
371 * number of times this function is called should equal the number returned
372 * from the GNUNET_TESTING_connect_topology call.
374 * The emsg variable is NULL on success (peers connected), and non-NULL on
375 * failure (peers failed to connect).
378 topology_callback (void *cls, const struct GNUNET_PeerIdentity *first,
379 const struct GNUNET_PeerIdentity *second, uint32_t distance,
380 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
381 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
382 struct GNUNET_TESTING_Daemon *first_daemon,
383 struct GNUNET_TESTING_Daemon *second_daemon,
390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
391 "connected peer %s to peer %s, distance %u\n",
392 first_daemon->shortname, second_daemon->shortname, distance);
398 failed_connections++;
399 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
400 "Failed to connect peer %s to peer %s with error :\n%s\n",
401 first_daemon->shortname, second_daemon->shortname, emsg);
405 if (total_connections == expected_connections)
408 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
409 "Created %d total connections, which is our target number! Starting next phase of testing.\n",
412 GNUNET_SCHEDULER_cancel (die_task);
414 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, "from test gets");
416 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
417 (GNUNET_TIME_UNIT_SECONDS, 2), &do_put, NULL);
419 else if (total_connections + failed_connections == expected_connections)
421 GNUNET_SCHEDULER_cancel (die_task);
423 GNUNET_SCHEDULER_add_now (&end_badly,
424 "from topology_callback (too many failed connections)");
430 * Callback which is called whenever a peer is started (as a result of the
431 * GNUNET_TESTING_daemons_start call.
433 * @param cls closure argument given to GNUNET_TESTING_daemons_start
434 * @param id the GNUNET_PeerIdentity of the started peer
435 * @param cfg the configuration for this specific peer (needed to connect
437 * @param d the handle to the daemon started
438 * @param emsg NULL if peer started, non-NULL on error
441 peers_started_callback (void *cls, const struct GNUNET_PeerIdentity *id,
442 const struct GNUNET_CONFIGURATION_Handle *cfg,
443 struct GNUNET_TESTING_Daemon *d, const char *emsg)
447 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
448 "Failed to start daemon with error: `%s'\n", emsg);
451 GNUNET_assert (id != NULL);
453 /* This is the first peer started */
454 if (peers_left == num_peers)
456 memcpy (&peer1id, id, sizeof (struct GNUNET_PeerIdentity)); /* Save the peer id */
457 peer1dht = GNUNET_DHT_connect (cfg, 100); /* Connect to the first peers DHT service */
458 if (peer1dht == NULL) /* If DHT connect failed */
460 GNUNET_SCHEDULER_cancel (die_task);
461 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
464 else /* This is the second peer started */
466 memcpy (&peer2id, id, sizeof (struct GNUNET_PeerIdentity)); /* Same as for first peer... */
467 peer2dht = GNUNET_DHT_connect (cfg, 100);
468 if (peer2dht == NULL)
470 GNUNET_SCHEDULER_cancel (die_task);
471 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
475 /* Decrement number of peers left to start */
478 if (peers_left == 0) /* Indicates all peers started */
481 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
482 "All %d daemons started, now connecting peers!\n", num_peers);
484 expected_connections = -1;
485 if ((pg != NULL)) /* Sanity check */
487 /* Connect peers in a "straight line" topology, return the number of expected connections */
488 expected_connections =
489 GNUNET_TESTING_connect_topology (pg, GNUNET_TESTING_TOPOLOGY_LINE,
490 GNUNET_TESTING_TOPOLOGY_OPTION_ALL,
491 0.0, TIMEOUT, 12, NULL, NULL);
494 /* Cancel current timeout fail task */
495 GNUNET_SCHEDULER_cancel (die_task);
496 if (expected_connections == GNUNET_SYSERR) /* Some error happened */
498 GNUNET_SCHEDULER_add_now (&end_badly,
499 "from connect topology (bad return)");
501 /* Schedule timeout on failure task */
503 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
504 "from connect topology (timeout)");
510 run (void *cls, char *const *args, const char *cfgfile,
511 const struct GNUNET_CONFIGURATION_Handle *cfg)
514 /* Get path from configuration file */
516 GNUNET_CONFIGURATION_get_value_string (cfg, "paths", "servicehome",
523 /* Get number of peers to start from configuration (should be two) */
525 GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
527 num_peers = DEFAULT_NUM_PEERS;
529 /* Set peers_left so we know when all peers started */
530 peers_left = num_peers;
532 /* Set up a task to end testing if peer start fails */
534 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
535 "didn't start all daemons in reasonable amount of time!!!");
537 /* Start num_peers peers, call peers_started_callback on peer start, topology_callback on peer connect */
538 /* Read the API documentation for other parameters! */
539 pg = GNUNET_TESTING_daemons_start (cfg, num_peers, 2, 2, TIMEOUT, NULL, NULL,
540 &peers_started_callback, NULL,
541 &topology_callback, NULL, NULL);
550 /* Arguments for GNUNET_PROGRAM_run */
551 char *const argv[] = { "test-dht-twopeer-put-get", /* Name to give running binary */
553 "test_dht_twopeer_data.conf", /* Config file to use */
559 struct GNUNET_GETOPT_CommandLineOption options[] = {
560 GNUNET_GETOPT_OPTION_END
562 /* Run the run function as a new program */
564 GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1, argv,
565 "test-dht-twopeer-put-get", "nohelp", options, &run,
567 if (ret != GNUNET_OK)
569 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
570 "`test-dht-twopeer': Failed with error code %d\n", ret);
576 main (int argc, char *argv[])
580 GNUNET_log_setup ("test-dht-twopeer",
589 * Need to remove base directory, subdirectories taken care
590 * of by the testing framework.
592 if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
594 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
595 "Failed to remove testing directory %s\n", test_directory);
600 /* end of test_dht_twopeer_put_get.c */