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.
140 void shutdown_callback (void *cls,
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", (char *)cls);
192 if (global_get_handle != NULL)
194 GNUNET_DHT_get_stop(global_get_handle);
195 global_get_handle = NULL;
197 GNUNET_SCHEDULER_add_now(&end_badly_cont, NULL);
202 * Iterator called if the GET request initiated returns a response.
205 * @param exp when will this value expire
206 * @param key key of the result
207 * @param type type of the result
208 * @param size number of bytes in data
209 * @param data pointer to the result data
211 void get_result_iterator (void *cls,
212 struct GNUNET_TIME_Absolute exp,
213 const GNUNET_HashCode * key,
214 const struct GNUNET_PeerIdentity * const *get_path,
215 const struct GNUNET_PeerIdentity * const *put_path,
216 enum GNUNET_BLOCK_Type type,
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 */
222 memset(&original_key, 42, sizeof(GNUNET_HashCode)); /* Set the key to what it was set to previously */
223 memset(original_data, 43, sizeof(original_data));
226 if ((0 != memcmp(&data.service_descriptor, key, sizeof (GNUNET_HashCode))) || (0 != memcmp((char *)&data, result_data, sizeof(original_data))))
228 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Key or data is not the same as was inserted!\n");
229 GNUNET_SCHEDULER_cancel(die_task);
230 GNUNET_SCHEDULER_add_now(&end_badly, "key or data mismatch in get response!\n");
234 if ((0 != memcmp(&original_key, key, sizeof (GNUNET_HashCode))) || (0 != memcmp(original_data, result_data, sizeof(original_data))))
236 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Key or data is not the same as was inserted!\n");
237 GNUNET_SCHEDULER_cancel(die_task);
238 GNUNET_SCHEDULER_add_now(&end_badly, "key or data mismatch in get response!\n");
243 GNUNET_SCHEDULER_cancel(die_task);
244 GNUNET_DHT_get_stop(global_get_handle);
245 GNUNET_SCHEDULER_add_now (&finish_testing, NULL);
249 * Start the GET request for the same key/data that was inserted.
252 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
254 GNUNET_HashCode key; /* Key for data lookup */
256 memcpy(&key, &data.service_descriptor, sizeof(GNUNET_HashCode));
258 memset(&key, 42, sizeof(GNUNET_HashCode)); /* Set the key to the same thing as when data was inserted */
260 global_get_handle = GNUNET_DHT_get_start(peer2dht, GNUNET_TIME_relative_get_forever(),
262 GNUNET_BLOCK_TYPE_DNS,
264 GNUNET_BLOCK_TYPE_TEST,
267 DEFAULT_GET_REPLICATION,
271 &get_result_iterator, NULL);
275 * Called when the PUT request has been transmitted to the DHT service.
276 * Schedule the GET request for some time in the future.
279 put_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
281 GNUNET_SCHEDULER_cancel (die_task);
282 die_task = GNUNET_SCHEDULER_add_delayed (GET_TIMEOUT,
283 &end_badly, "waiting for get response (data not found)");
284 GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10), &do_get, NULL);
290 * Set up some data, and call API PUT function
293 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
295 GNUNET_HashCode key; /* Made up key to store data under */
296 char data[4]; /* Made up data to store */
297 memset(&key, 42, sizeof(GNUNET_HashCode)); /* Set the key to something simple so we can issue GET request */
298 memset(data, 43, sizeof(data));
300 /* Insert the data at the first peer */
301 GNUNET_DHT_put(peer1dht,
303 DEFAULT_PUT_REPLICATION,
305 GNUNET_BLOCK_TYPE_TEST,
307 GNUNET_TIME_UNIT_FOREVER_ABS,
308 GNUNET_TIME_UNIT_FOREVER_REL,
309 &put_finished, NULL);
314 * Set up some data, and call API PUT function
317 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
319 char* name = "philipptoelke.gnunet.";
320 size_t size = sizeof(struct GNUNET_DNS_Record);
321 memset(&data, 0, size);
323 data.purpose.size = htonl(size - sizeof(struct GNUNET_CRYPTO_RsaSignature));
324 data.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_DNS_RECORD;
326 GNUNET_CRYPTO_hash(name, strlen(name)+1, &data.service_descriptor);
328 data.service_type = htonl(GNUNET_DNS_SERVICE_TYPE_UDP);
329 data.ports = htons(69);
332 GNUNET_asprintf(&keyfile, "/tmp/test_dns_data_key");
333 struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key = GNUNET_CRYPTO_rsa_key_create_from_file(keyfile);
334 GNUNET_free(keyfile);
335 GNUNET_assert(my_private_key != NULL);
337 GNUNET_CRYPTO_rsa_key_get_public(my_private_key, &data.peer);
339 data.expiration_time = GNUNET_TIME_relative_to_absolute(GNUNET_TIME_UNIT_HOURS);
342 if (GNUNET_OK != GNUNET_CRYPTO_rsa_sign(my_private_key,
346 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "could not sign DNS_Record\n");
349 GNUNET_CRYPTO_rsa_key_free(my_private_key);
351 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
352 "Putting with key %08x\n",
353 *((unsigned int*)&data.service_descriptor));
355 GNUNET_DHT_put(peer1dht,
356 &data.service_descriptor,
357 DEFAULT_PUT_REPLICATION,
359 GNUNET_BLOCK_TYPE_DNS,
362 GNUNET_TIME_relative_to_absolute(GNUNET_TIME_UNIT_HOURS),
363 GNUNET_TIME_UNIT_MINUTES,
370 * This function is called whenever a connection attempt is finished between two of
371 * the started peers (started with GNUNET_TESTING_daemons_start). The total
372 * number of times this function is called should equal the number returned
373 * from the GNUNET_TESTING_connect_topology call.
375 * The emsg variable is NULL on success (peers connected), and non-NULL on
376 * failure (peers failed to connect).
379 topology_callback (void *cls,
380 const struct GNUNET_PeerIdentity *first,
381 const struct GNUNET_PeerIdentity *second,
383 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
384 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
385 struct GNUNET_TESTING_Daemon *first_daemon,
386 struct GNUNET_TESTING_Daemon *second_daemon,
393 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "connected peer %s to peer %s, distance %u\n",
394 first_daemon->shortname,
395 second_daemon->shortname,
402 failed_connections++;
403 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to connect peer %s to peer %s with error :\n%s\n",
404 first_daemon->shortname,
405 second_daemon->shortname, emsg);
409 if (total_connections == expected_connections)
412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
413 "Created %d total connections, which is our target number! Starting next phase of testing.\n",
416 GNUNET_SCHEDULER_cancel (die_task);
417 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
418 &end_badly, "from test gets");
420 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2), &do_put, NULL);
422 else if (total_connections + failed_connections == expected_connections)
424 GNUNET_SCHEDULER_cancel (die_task);
425 die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from topology_callback (too many failed connections)");
431 * Callback which is called whenever a peer is started (as a result of the
432 * GNUNET_TESTING_daemons_start call.
434 * @param cls closure argument given to GNUNET_TESTING_daemons_start
435 * @param id the GNUNET_PeerIdentity of the started peer
436 * @param cfg the configuration for this specific peer (needed to connect
438 * @param d the handle to the daemon started
439 * @param emsg NULL if peer started, non-NULL on error
442 peers_started_callback (void *cls,
443 const struct GNUNET_PeerIdentity *id,
444 const struct GNUNET_CONFIGURATION_Handle *cfg,
445 struct GNUNET_TESTING_Daemon *d, const char *emsg)
449 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to start daemon with error: `%s'\n",
453 GNUNET_assert (id != NULL);
455 /* This is the first peer started */
456 if (peers_left == num_peers)
458 memcpy(&peer1id, id, sizeof(struct GNUNET_PeerIdentity)); /* Save the peer id */
459 peer1dht = GNUNET_DHT_connect(cfg, 100); /* Connect to the first peers DHT service */
460 if (peer1dht == NULL) /* If DHT connect failed */
462 GNUNET_SCHEDULER_cancel (die_task);
463 GNUNET_SCHEDULER_add_now(&end_badly, "Failed to get dht handle!\n");
466 else /* This is the second peer started */
468 memcpy(&peer2id, id, sizeof(struct GNUNET_PeerIdentity)); /* Same as for first peer... */
469 peer2dht = GNUNET_DHT_connect(cfg, 100);
470 if (peer2dht == NULL)
472 GNUNET_SCHEDULER_cancel (die_task);
473 GNUNET_SCHEDULER_add_now(&end_badly, "Failed to get dht handle!\n");
477 /* Decrement number of peers left to start */
480 if (peers_left == 0) /* Indicates all peers started */
483 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
484 "All %d daemons started, now connecting peers!\n",
487 expected_connections = -1;
488 if ((pg != NULL)) /* Sanity check */
490 /* Connect peers in a "straight line" topology, return the number of expected connections */
491 expected_connections = GNUNET_TESTING_connect_topology (pg,
492 GNUNET_TESTING_TOPOLOGY_LINE,
493 GNUNET_TESTING_TOPOLOGY_OPTION_ALL,
500 /* Cancel current timeout fail task */
501 GNUNET_SCHEDULER_cancel (die_task);
502 if (expected_connections == GNUNET_SYSERR) /* Some error happened */
503 die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from connect topology (bad return)");
505 /* Schedule timeout on failure task */
506 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
507 &end_badly, "from connect topology (timeout)");
515 const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
518 /* Get path from configuration file */
519 if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
525 /* Get number of peers to start from configuration (should be two) */
527 GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
529 num_peers = DEFAULT_NUM_PEERS;
531 /* Set peers_left so we know when all peers started */
532 peers_left = num_peers;
534 /* Set up a task to end testing if peer start fails */
535 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
536 &end_badly, "didn't start all daemons in reasonable amount of time!!!");
538 /* Start num_peers peers, call peers_started_callback on peer start, topology_callback on peer connect */
539 /* Read the API documentation for other parameters! */
540 pg = GNUNET_TESTING_daemons_start (cfg,
547 &peers_started_callback,
559 /* Arguments for GNUNET_PROGRAM_run */
560 char *const argv[] = {"test-dht-twopeer-put-get", /* Name to give running binary */
562 "test_dht_twopeer_data.conf", /* Config file to use */
568 struct GNUNET_GETOPT_CommandLineOption options[] = {
569 GNUNET_GETOPT_OPTION_END
571 /* Run the run function as a new program */
572 ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
573 argv, "test-dht-twopeer-put-get", "nohelp",
575 if (ret != GNUNET_OK)
577 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-dht-twopeer': Failed with error code %d\n", ret);
583 main (int argc, char *argv[])
587 GNUNET_log_setup ("test-dht-twopeer",
596 * Need to remove base directory, subdirectories taken care
597 * of by the testing framework.
599 if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
601 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
606 /* end of test_dht_twopeer_put_get.c */