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,
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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,
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));
225 if ((0 != memcmp(&original_key, key, sizeof (GNUNET_HashCode))) || (0 != memcmp(original_data, data, sizeof(original_data))))
227 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Key or data is not the same as was inserted!\n");
228 GNUNET_SCHEDULER_cancel(die_task);
229 GNUNET_SCHEDULER_add_now(&end_badly, "key or data mismatch in get response!\n");
233 GNUNET_SCHEDULER_cancel(die_task);
234 GNUNET_DHT_get_stop(global_get_handle);
235 GNUNET_SCHEDULER_add_now (&finish_testing, NULL);
239 * Start the GET request for the same key/data that was inserted.
242 do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
244 GNUNET_HashCode key; /* Key for data lookup */
246 memcpy(&key, &data.service_descriptor, sizeof(GNUNET_HashCode));
248 memset(&key, 42, sizeof(GNUNET_HashCode)); /* Set the key to the same thing as when data was inserted */
250 global_get_handle = GNUNET_DHT_get_start(peer2dht, GNUNET_TIME_relative_get_forever(),
252 GNUNET_BLOCK_TYPE_DNS,
254 GNUNET_BLOCK_TYPE_TEST,
257 DEFAULT_GET_REPLICATION,
261 &get_result_iterator, NULL);
265 * Called when the PUT request has been transmitted to the DHT service.
266 * Schedule the GET request for some time in the future.
269 put_finished (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
271 GNUNET_SCHEDULER_cancel (die_task);
272 die_task = GNUNET_SCHEDULER_add_delayed (GET_TIMEOUT,
273 &end_badly, "waiting for get response (data not found)");
274 GNUNET_SCHEDULER_add_delayed(GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 10), &do_get, NULL);
280 * Set up some data, and call API PUT function
283 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
285 GNUNET_HashCode key; /* Made up key to store data under */
286 char data[4]; /* Made up data to store */
287 memset(&key, 42, sizeof(GNUNET_HashCode)); /* Set the key to something simple so we can issue GET request */
288 memset(data, 43, sizeof(data));
290 /* Insert the data at the first peer */
291 GNUNET_DHT_put(peer1dht,
293 DEFAULT_PUT_REPLICATION,
295 GNUNET_BLOCK_TYPE_TEST,
297 GNUNET_TIME_UNIT_FOREVER_ABS,
298 GNUNET_TIME_UNIT_FOREVER_REL,
299 &put_finished, NULL);
304 * Set up some data, and call API PUT function
307 do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext * tc)
309 char* name = "philipptoelke.gnunet.";
310 size_t size = sizeof(struct GNUNET_DNS_Record);
311 memset(&data, 0, size);
313 data.purpose.size = htonl(size - sizeof(struct GNUNET_CRYPTO_RsaSignature));
314 data.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_DNS_RECORD;
316 GNUNET_CRYPTO_hash(name, strlen(name)+1, &data.service_descriptor);
318 data.service_type = htonl(GNUNET_DNS_SERVICE_TYPE_UDP);
319 data.ports = htons(69);
322 GNUNET_asprintf(&keyfile, "/tmp/test_dns_data_key");
323 struct GNUNET_CRYPTO_RsaPrivateKey *my_private_key = GNUNET_CRYPTO_rsa_key_create_from_file(keyfile);
324 GNUNET_free(keyfile);
325 GNUNET_assert(my_private_key != NULL);
327 GNUNET_CRYPTO_rsa_key_get_public(my_private_key, &data.peer);
329 data.expiration_time = GNUNET_TIME_relative_to_absolute(GNUNET_TIME_UNIT_HOURS);
332 if (GNUNET_OK != GNUNET_CRYPTO_rsa_sign(my_private_key,
336 GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "could not sign DNS_Record\n");
339 GNUNET_CRYPTO_rsa_key_free(my_private_key);
341 GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
342 "Putting with key %08x\n",
343 *((unsigned int*)&data.service_descriptor));
345 GNUNET_DHT_put(peer1dht,
346 &data.service_descriptor,
347 DEFAULT_PUT_REPLICATION,
349 GNUNET_BLOCK_TYPE_DNS,
352 GNUNET_TIME_relative_to_absolute(GNUNET_TIME_UNIT_HOURS),
353 GNUNET_TIME_UNIT_MINUTES,
360 * This function is called whenever a connection attempt is finished between two of
361 * the started peers (started with GNUNET_TESTING_daemons_start). The total
362 * number of times this function is called should equal the number returned
363 * from the GNUNET_TESTING_connect_topology call.
365 * The emsg variable is NULL on success (peers connected), and non-NULL on
366 * failure (peers failed to connect).
369 topology_callback (void *cls,
370 const struct GNUNET_PeerIdentity *first,
371 const struct GNUNET_PeerIdentity *second,
373 const struct GNUNET_CONFIGURATION_Handle *first_cfg,
374 const struct GNUNET_CONFIGURATION_Handle *second_cfg,
375 struct GNUNET_TESTING_Daemon *first_daemon,
376 struct GNUNET_TESTING_Daemon *second_daemon,
383 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "connected peer %s to peer %s, distance %u\n",
384 first_daemon->shortname,
385 second_daemon->shortname,
392 failed_connections++;
393 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failed to connect peer %s to peer %s with error :\n%s\n",
394 first_daemon->shortname,
395 second_daemon->shortname, emsg);
399 if (total_connections == expected_connections)
402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
403 "Created %d total connections, which is our target number! Starting next phase of testing.\n",
406 GNUNET_SCHEDULER_cancel (die_task);
407 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
408 &end_badly, "from test gets");
410 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 2), &do_put, NULL);
412 else if (total_connections + failed_connections == expected_connections)
414 GNUNET_SCHEDULER_cancel (die_task);
415 die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from topology_callback (too many failed connections)");
421 * Callback which is called whenever a peer is started (as a result of the
422 * GNUNET_TESTING_daemons_start call.
424 * @param cls closure argument given to GNUNET_TESTING_daemons_start
425 * @param id the GNUNET_PeerIdentity of the started peer
426 * @param cfg the configuration for this specific peer (needed to connect
428 * @param d the handle to the daemon started
429 * @param emsg NULL if peer started, non-NULL on error
432 peers_started_callback (void *cls,
433 const struct GNUNET_PeerIdentity *id,
434 const struct GNUNET_CONFIGURATION_Handle *cfg,
435 struct GNUNET_TESTING_Daemon *d, const char *emsg)
439 GNUNET_log (GNUNET_ERROR_TYPE_WARNING, "Failed to start daemon with error: `%s'\n",
443 GNUNET_assert (id != NULL);
445 /* This is the first peer started */
446 if (peers_left == num_peers)
448 memcpy(&peer1id, id, sizeof(struct GNUNET_PeerIdentity)); /* Save the peer id */
449 peer1dht = GNUNET_DHT_connect(cfg, 100); /* Connect to the first peers DHT service */
450 if (peer1dht == NULL) /* If DHT connect failed */
452 GNUNET_SCHEDULER_cancel (die_task);
453 GNUNET_SCHEDULER_add_now(&end_badly, "Failed to get dht handle!\n");
456 else /* This is the second peer started */
458 memcpy(&peer2id, id, sizeof(struct GNUNET_PeerIdentity)); /* Same as for first peer... */
459 peer2dht = GNUNET_DHT_connect(cfg, 100);
460 if (peer2dht == NULL)
462 GNUNET_SCHEDULER_cancel (die_task);
463 GNUNET_SCHEDULER_add_now(&end_badly, "Failed to get dht handle!\n");
467 /* Decrement number of peers left to start */
470 if (peers_left == 0) /* Indicates all peers started */
473 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
474 "All %d daemons started, now connecting peers!\n",
477 expected_connections = -1;
478 if ((pg != NULL)) /* Sanity check */
480 /* Connect peers in a "straight line" topology, return the number of expected connections */
481 expected_connections = GNUNET_TESTING_connect_topology (pg, GNUNET_TESTING_TOPOLOGY_LINE, GNUNET_TESTING_TOPOLOGY_OPTION_ALL, 0.0, NULL, NULL);
484 /* Cancel current timeout fail task */
485 GNUNET_SCHEDULER_cancel (die_task);
486 if (expected_connections == GNUNET_SYSERR) /* Some error happened */
487 die_task = GNUNET_SCHEDULER_add_now (&end_badly, "from connect topology (bad return)");
489 /* Schedule timeout on failure task */
490 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
491 &end_badly, "from connect topology (timeout)");
499 const char *cfgfile, const struct GNUNET_CONFIGURATION_Handle *cfg)
502 /* Get path from configuration file */
503 if (GNUNET_YES != GNUNET_CONFIGURATION_get_value_string(cfg, "paths", "servicehome", &test_directory))
509 /* Get number of peers to start from configuration (should be two) */
511 GNUNET_CONFIGURATION_get_value_number (cfg, "testing", "num_peers",
513 num_peers = DEFAULT_NUM_PEERS;
515 /* Set peers_left so we know when all peers started */
516 peers_left = num_peers;
518 /* Set up a task to end testing if peer start fails */
519 die_task = GNUNET_SCHEDULER_add_delayed (TIMEOUT,
520 &end_badly, "didn't start all daemons in reasonable amount of time!!!");
522 /* Start num_peers peers, call peers_started_callback on peer start, topology_callback on peer connect */
523 /* Read the API documentation for other parameters! */
524 pg = GNUNET_TESTING_daemons_start (cfg,
525 num_peers, TIMEOUT, NULL, NULL, &peers_started_callback, NULL,
526 &topology_callback, NULL, NULL);
534 /* Arguments for GNUNET_PROGRAM_run */
535 char *const argv[] = {"test-dht-twopeer-put-get", /* Name to give running binary */
537 "test_dht_twopeer_data.conf", /* Config file to use */
543 struct GNUNET_GETOPT_CommandLineOption options[] = {
544 GNUNET_GETOPT_OPTION_END
546 /* Run the run function as a new program */
547 ret = GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1,
548 argv, "test-dht-twopeer-put-get", "nohelp",
550 if (ret != GNUNET_OK)
552 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "`test-dht-twopeer': Failed with error code %d\n", ret);
558 main (int argc, char *argv[])
562 GNUNET_log_setup ("test-dht-twopeer",
571 * Need to remove base directory, subdirectories taken care
572 * of by the testing framework.
574 if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
576 GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Failed to remove testing directory %s\n", test_directory);
581 /* end of test_dht_twopeer_put_get.c */