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diff --git a/src/dht/test_dht_twopeer_get_put.c b/src/dht/test_dht_twopeer_get_put.c
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--- a/src/dht/test_dht_twopeer_get_put.c
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1/*
2 This file is part of GNUnet.
3 (C) 2009 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 dht/test_dht_twopeer_get_put.c
22 * @brief base testcase for testing DHT service with
23 * two running peers.
24 *
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
37 * the peers.
38 */
39#include "platform.h"
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"
45
46/* DEFINES */
47#define VERBOSE GNUNET_NO
48
49/* Timeout for entire testcase */
50#define TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 40)
51
52/* Timeout for waiting for replies to get requests */
53#define GET_TIMEOUT GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS, 30)
54
55/* If number of peers not in config file, use this number */
56#define DEFAULT_NUM_PEERS 2
57
58#define DNS GNUNET_NO
59
60/* Globals */
61
62/**
63 * Directory to store temp data in, defined in config file
64 */
65static char *test_directory;
66
67/**
68 * Variable used to store the number of connections we should wait for.
69 */
70static unsigned int expected_connections;
71
72/**
73 * Variable used to keep track of how many peers aren't yet started.
74 */
75static unsigned long long peers_left;
76
77/**
78 * Handle to the set of all peers run for this test.
79 */
80static struct GNUNET_TESTING_PeerGroup *pg;
81
82/**
83 * Global handle we will use for GET requests.
84 */
85struct GNUNET_DHT_GetHandle *global_get_handle;
86
87
88/**
89 * Total number of peers to run, set based on config file.
90 */
91static unsigned long long num_peers;
92
93/**
94 * Global used to count how many connections we have currently
95 * been notified about (how many times has topology_callback been called
96 * with success?)
97 */
98static unsigned int total_connections;
99
100/**
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?)
104 */
105static unsigned int failed_connections;
106
107/* Task handle to use to schedule test failure */
108GNUNET_SCHEDULER_TaskIdentifier die_task;
109
110/* Global return value (0 for success, anything else for failure) */
111static int ok;
112
113#if DNS
114struct GNUNET_DNS_Record data;
115#endif
116
117/**
118 * Peer identity of the first peer started.
119 */
120static struct GNUNET_PeerIdentity peer1id;
121
122/**
123 * Peer identity of the second peer started.
124 */
125static struct GNUNET_PeerIdentity peer2id;
126
127/**
128 * Handle to the first peers DHT service (via the API)
129 */
130static struct GNUNET_DHT_Handle *peer1dht;
131
132/**
133 * Handle to the second peers DHT service (via the API)
134 */
135static struct GNUNET_DHT_Handle *peer2dht;
136
137static void
138do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
139
140/**
141 * Check whether peers successfully shut down.
142 */
143void
144shutdown_callback (void *cls, const char *emsg)
145{
146 if (emsg != NULL)
147 {
148 if (ok == 0)
149 ok = 2;
150 }
151}
152
153/**
154 * Function scheduled to be run on the successful completion of this
155 * testcase. Specifically, called when our get request completes.
156 */
157static void
158finish_testing (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
159{
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);
166 ok = 0;
167}
168
169/**
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.
172 */
173static void
174end_badly_cont (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
175{
176 if (peer1dht != NULL)
177 GNUNET_DHT_disconnect (peer1dht);
178
179 if (peer2dht != NULL)
180 GNUNET_DHT_disconnect (peer2dht);
181
182 if (pg != NULL)
183 GNUNET_TESTING_daemons_stop (pg, TIMEOUT, &shutdown_callback, NULL);
184}
185
186/**
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
189 * test.
190 */
191static void
192end_badly (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
193{
194 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Failing test with error: `%s'!\n",
195 (char *) cls);
196 if (global_get_handle != NULL)
197 {
198 GNUNET_DHT_get_stop (global_get_handle);
199 global_get_handle = NULL;
200 }
201 GNUNET_SCHEDULER_add_now (&end_badly_cont, NULL);
202 ok = 1;
203}
204
205/**
206 * Iterator called if the GET request initiated returns a response.
207 *
208 * @param cls closure
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
214 */
215void
216get_result_iterator (void *cls, struct GNUNET_TIME_Absolute exp,
217 const struct 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)
223{
224 struct GNUNET_HashCode original_key; /* Key data was stored data under */
225 char original_data[4]; /* Made up data that was stored */
226
227 memset (&original_key, 42, sizeof (struct GNUNET_HashCode)); /* Set the key to what it was set to previously */
228 memset (original_data, 43, sizeof (original_data));
229
230#if DNS
231 if ((sizeof (original_data) != size) ||
232 (0 != memcmp (&data.service_descriptor, key, sizeof (struct GNUNET_HashCode))) ||
233 (0 != memcmp ((char *) &data, result_data, sizeof (original_data))))
234 {
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");
240 return;
241 }
242#else
243 if ((sizeof (original_data) != size) ||
244 (0 != memcmp (&original_key, key, sizeof (struct GNUNET_HashCode))) ||
245 (0 != memcmp (original_data, result_data, sizeof (original_data))))
246 {
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");
252 return;
253 }
254#endif
255
256 GNUNET_SCHEDULER_cancel (die_task);
257 GNUNET_DHT_get_stop (global_get_handle);
258 GNUNET_SCHEDULER_add_now (&finish_testing, NULL);
259}
260
261/**
262 * Start the GET request for the same key/data that was inserted.
263 */
264static void
265do_get (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
266{
267 struct GNUNET_HashCode key; /* Key for data lookup */
268
269#if DNS
270 memcpy (&key, &data.service_descriptor, sizeof (struct GNUNET_HashCode));
271#else
272 memset (&key, 42, sizeof (struct GNUNET_HashCode)); /* Set the key to the same thing as when data was inserted */
273#endif
274 global_get_handle =
275 GNUNET_DHT_get_start (peer2dht,
276#if DNS
277 GNUNET_BLOCK_TYPE_DNS,
278#else
279 GNUNET_BLOCK_TYPE_TEST,
280#endif
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);
285}
286
287/**
288 * Called when the PUT request has been transmitted to the DHT service.
289 * Schedule the GET request for some time in the future.
290 */
291static void
292put_finished (void *cls, int success)
293{
294 GNUNET_SCHEDULER_cancel (die_task);
295 die_task =
296 GNUNET_SCHEDULER_add_delayed (GET_TIMEOUT, &end_badly,
297 "waiting for get response (data not found)");
298}
299
300
301#if !DNS
302/**
303 * Set up some data, and call API PUT function
304 */
305static void
306do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
307{
308 struct GNUNET_HashCode key; /* Made up key to store data under */
309 char data[4]; /* Made up data to store */
310
311 memset (&key, 42, sizeof (struct GNUNET_HashCode)); /* Set the key to something simple so we can issue GET request */
312 memset (data, 43, sizeof (data));
313
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);
318}
319#else
320
321/**
322 * Set up some data, and call API PUT function
323 */
324static void
325do_put (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
326{
327 char *name = "philipptoelke.gnunet.";
328 size_t size = sizeof (struct GNUNET_DNS_Record);
329
330 memset (&data, 0, size);
331
332 data.purpose.size = htonl (size - sizeof (struct GNUNET_CRYPTO_RsaSignature));
333 data.purpose.purpose = GNUNET_SIGNATURE_PURPOSE_DNS_RECORD;
334
335 GNUNET_CRYPTO_hash (name, strlen (name) + 1, &data.service_descriptor);
336
337 data.service_type = htonl (GNUNET_DNS_SERVICE_TYPE_UDP);
338 data.ports = htons (69);
339
340 char *keyfile;
341
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);
347
348 GNUNET_CRYPTO_rsa_key_get_public (my_private_key, &data.peer);
349
350 data.expiration_time =
351 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS);
352
353 /* Sign the block */
354 if (GNUNET_OK !=
355 GNUNET_CRYPTO_rsa_sign (my_private_key, &data.purpose, &data.signature))
356 {
357 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "could not sign DNS_Record\n");
358 return;
359 }
360 GNUNET_CRYPTO_rsa_key_free (my_private_key);
361
362 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Putting with key %08x\n",
363 *((unsigned int *) &data.service_descriptor));
364
365 GNUNET_DHT_put (peer1dht, &data.service_descriptor, DEFAULT_PUT_REPLICATION,
366 GNUNET_DHT_RO_NONE, GNUNET_BLOCK_TYPE_DNS, size,
367 (char *) &data,
368 GNUNET_TIME_relative_to_absolute (GNUNET_TIME_UNIT_HOURS),
369 GNUNET_TIME_UNIT_MINUTES, &put_finished, NULL);
370}
371#endif
372
373/**
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.
378 *
379 * The emsg variable is NULL on success (peers connected), and non-NULL on
380 * failure (peers failed to connect).
381 */
382void
383topology_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,
389 const char *emsg)
390{
391 if (emsg == NULL)
392 {
393 total_connections++;
394 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
395 "connected peer %s to peer %s, distance %u\n",
396 first_daemon->shortname, second_daemon->shortname, distance);
397 }
398 else
399 {
400 failed_connections++;
401 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
402 "Failed to connect peer %s to peer %s with error :\n%s\n",
403 first_daemon->shortname, second_daemon->shortname, emsg);
404 }
405
406 if (total_connections == expected_connections)
407 {
408 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
409 "Created %d total connections, which is our target number! Starting next phase of testing.\n",
410 total_connections);
411 GNUNET_SCHEDULER_cancel (die_task);
412 die_task =
413 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly, "from test gets");
414
415 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_relative_multiply
416 (GNUNET_TIME_UNIT_SECONDS, 2), &do_get, NULL);
417 }
418 else if (total_connections + failed_connections == expected_connections)
419 {
420 GNUNET_SCHEDULER_cancel (die_task);
421 die_task =
422 GNUNET_SCHEDULER_add_now (&end_badly,
423 "from topology_callback (too many failed connections)");
424 }
425}
426
427
428/**
429 * Callback which is called whenever a peer is started (as a result of the
430 * GNUNET_TESTING_daemons_start call.
431 *
432 * @param cls closure argument given to GNUNET_TESTING_daemons_start
433 * @param id the GNUNET_PeerIdentity of the started peer
434 * @param cfg the configuration for this specific peer (needed to connect
435 * to the DHT)
436 * @param d the handle to the daemon started
437 * @param emsg NULL if peer started, non-NULL on error
438 */
439static void
440peers_started_callback (void *cls, const struct GNUNET_PeerIdentity *id,
441 const struct GNUNET_CONFIGURATION_Handle *cfg,
442 struct GNUNET_TESTING_Daemon *d, const char *emsg)
443{
444 if (emsg != NULL)
445 {
446 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
447 "Failed to start daemon with error: `%s'\n", emsg);
448 return;
449 }
450 GNUNET_assert (id != NULL);
451
452 /* This is the first peer started */
453 if (peers_left == num_peers)
454 {
455 memcpy (&peer1id, id, sizeof (struct GNUNET_PeerIdentity)); /* Save the peer id */
456 peer1dht = GNUNET_DHT_connect (cfg, 100); /* Connect to the first peers DHT service */
457 if (peer1dht == NULL) /* If DHT connect failed */
458 {
459 GNUNET_SCHEDULER_cancel (die_task);
460 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
461 }
462 }
463 else /* This is the second peer started */
464 {
465 memcpy (&peer2id, id, sizeof (struct GNUNET_PeerIdentity)); /* Same as for first peer... */
466 peer2dht = GNUNET_DHT_connect (cfg, 100);
467 if (peer2dht == NULL)
468 {
469 GNUNET_SCHEDULER_cancel (die_task);
470 GNUNET_SCHEDULER_add_now (&end_badly, "Failed to get dht handle!\n");
471 }
472 }
473
474 /* Decrement number of peers left to start */
475 peers_left--;
476
477 if (peers_left == 0) /* Indicates all peers started */
478 {
479 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
480 "All %d daemons started, now connecting peers!\n", num_peers);
481 expected_connections = -1;
482 if ((pg != NULL)) /* Sanity check */
483 {
484 /* Connect peers in a "straight line" topology, return the number of expected connections */
485 expected_connections =
486 GNUNET_TESTING_connect_topology (pg, GNUNET_TESTING_TOPOLOGY_LINE,
487 GNUNET_TESTING_TOPOLOGY_OPTION_ALL,
488 0.0, TIMEOUT, 12, NULL, NULL);
489 }
490
491 /* Cancel current timeout fail task */
492 GNUNET_SCHEDULER_cancel (die_task);
493 if (expected_connections == GNUNET_SYSERR) /* Some error happened */
494 die_task =
495 GNUNET_SCHEDULER_add_now (&end_badly,
496 "from connect topology (bad return)");
497
498 /* Schedule timeout on failure task */
499 die_task =
500 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
501 "from connect topology (timeout)");
502 ok = 0;
503 }
504}
505
506static void
507run (void *cls, char *const *args, const char *cfgfile,
508 const struct GNUNET_CONFIGURATION_Handle *cfg)
509{
510
511 /* Get path from configuration file */
512 if (GNUNET_YES !=
513 GNUNET_CONFIGURATION_get_value_string (cfg, "paths", "servicehome",
514 &test_directory))
515 {
516 ok = 404;
517 return;
518 }
519
520 /* Get number of peers to start from configuration (should be two) */
521 if (GNUNET_SYSERR ==
522 GNUNET_CONFIGURATION_get_value_number (cfg, "testing_old", "num_peers",
523 &num_peers))
524 num_peers = DEFAULT_NUM_PEERS;
525
526 /* Set peers_left so we know when all peers started */
527 peers_left = num_peers;
528
529 /* Set up a task to end testing if peer start fails */
530 die_task =
531 GNUNET_SCHEDULER_add_delayed (TIMEOUT, &end_badly,
532 "didn't start all daemons in reasonable amount of time!!!");
533
534 /* Start num_peers peers, call peers_started_callback on peer start, topology_callback on peer connect */
535 /* Read the API documentation for other parameters! */
536 pg = GNUNET_TESTING_daemons_start (cfg, num_peers, 2, 2, TIMEOUT, NULL, NULL,
537 &peers_started_callback, NULL,
538 &topology_callback, NULL, NULL);
539
540}
541
542static int
543check ()
544{
545 int ret;
546
547 /* Arguments for GNUNET_PROGRAM_run */
548 char *const argv[] = { "test-dht-twopeer-get-put", /* Name to give running binary */
549 "-c",
550 "test_dht_twopeer_data.conf", /* Config file to use */
551 NULL
552 };
553 struct GNUNET_GETOPT_CommandLineOption options[] = {
554 GNUNET_GETOPT_OPTION_END
555 };
556 /* Run the run function as a new program */
557 ret =
558 GNUNET_PROGRAM_run ((sizeof (argv) / sizeof (char *)) - 1, argv,
559 "test-dht-twopeer-get-put", "nohelp", options, &run,
560 &ok);
561 if (ret != GNUNET_OK)
562 {
563 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
564 "`test-dht-twopeer': Failed with error code %d\n", ret);
565 }
566 return ok;
567}
568
569int
570main (int argc, char *argv[])
571{
572 int ret;
573
574 GNUNET_log_setup ("test-dht-twopeer",
575 "WARNING",
576 NULL);
577 ret = check ();
578 /**
579 * Need to remove base directory, subdirectories taken care
580 * of by the testing framework.
581 */
582 if (GNUNET_DISK_directory_remove (test_directory) != GNUNET_OK)
583 {
584 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
585 "Failed to remove testing directory %s\n", test_directory);
586 }
587 return ret;
588}
589
590/* end of test_dht_twopeer_get_put.c */