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diff --git a/src/fs/gnunet-service-fs_new.c b/src/fs/gnunet-service-fs_new.c
deleted file mode 100644
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1/*
2 This file is part of GNUnet.
3 (C) 2009, 2010, 2011 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/**
22 * @file fs/gnunet-service-fs.c
23 * @brief gnunet anonymity protocol implementation
24 * @author Christian Grothoff
25 *
26 * To use:
27 * - consider re-issue GSF_dht_lookup_ after non-DHT reply received
28 * - implement 'SUPPORT_DELAYS'
29 *
30 */
31#include "platform.h"
32#include <float.h>
33#include "gnunet_constants.h"
34#include "gnunet_core_service.h"
35#include "gnunet_dht_service.h"
36#include "gnunet_datastore_service.h"
37#include "gnunet_load_lib.h"
38#include "gnunet_peer_lib.h"
39#include "gnunet_protocols.h"
40#include "gnunet_signatures.h"
41#include "gnunet_statistics_service.h"
42#include "gnunet_transport_service.h"
43#include "gnunet_util_lib.h"
44#include "gnunet-service-fs_cp.h"
45#include "gnunet-service-fs_indexing.h"
46#include "gnunet-service-fs_lc.h"
47#include "gnunet-service-fs_pe.h"
48#include "gnunet-service-fs_pr.h"
49#include "gnunet-service-fs_push.h"
50#include "gnunet-service-fs_put.h"
51#include "fs.h"
52
53/**
54 * Size for the hash map for DHT requests from the FS
55 * service. Should be about the number of concurrent
56 * DHT requests we plan to make.
57 */
58#define FS_DHT_HT_SIZE 1024
59
60
61/**
62 * How quickly do we age cover traffic? At the given
63 * time interval, remaining cover traffic counters are
64 * decremented by 1/16th.
65 */
66#define COVER_AGE_FREQUENCY GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
67
68
69/* ****************************** globals ****************************** */
70
71/**
72 * Our connection to the datastore.
73 */
74struct GNUNET_DATASTORE_Handle *GSF_dsh;
75
76/**
77 * Our configuration.
78 */
79const struct GNUNET_CONFIGURATION_Handle *GSF_cfg;
80
81/**
82 * Handle for reporting statistics.
83 */
84struct GNUNET_STATISTICS_Handle *GSF_stats;
85
86/**
87 * Handle for DHT operations.
88 */
89struct GNUNET_DHT_Handle *GSF_dht;
90
91/**
92 * How long do requests typically stay in the routing table?
93 */
94struct GNUNET_LOAD_Value *GSF_rt_entry_lifetime;
95
96/**
97 * Typical priorities we're seeing from other peers right now. Since
98 * most priorities will be zero, this value is the weighted average of
99 * non-zero priorities seen "recently". In order to ensure that new
100 * values do not dramatically change the ratio, values are first
101 * "capped" to a reasonable range (+N of the current value) and then
102 * averaged into the existing value by a ratio of 1:N. Hence
103 * receiving the largest possible priority can still only raise our
104 * "current_priorities" by at most 1.
105 */
106double GSF_current_priorities;
107
108/**
109 * How many query messages have we received 'recently' that
110 * have not yet been claimed as cover traffic?
111 */
112unsigned int GSF_cover_query_count;
113
114/**
115 * How many content messages have we received 'recently' that
116 * have not yet been claimed as cover traffic?
117 */
118unsigned int GSF_cover_content_count;
119
120/**
121 * Our block context.
122 */
123struct GNUNET_BLOCK_Context *GSF_block_ctx;
124
125/**
126 * Pointer to handle to the core service (points to NULL until we've
127 * connected to it).
128 */
129struct GNUNET_CORE_Handle *GSF_core;
130
131
132/* ***************************** locals ******************************* */
133
134/**
135 * Configuration for block library.
136 */
137static struct GNUNET_CONFIGURATION_Handle *block_cfg;
138
139/**
140 * ID of our task that we use to age the cover counters.
141 */
142static GNUNET_SCHEDULER_TaskIdentifier cover_age_task;
143
144/**
145 * Datastore 'GET' load tracking.
146 */
147static struct GNUNET_LOAD_Value *datastore_get_load;
148
149/**
150 * Identity of this peer.
151 */
152static struct GNUNET_PeerIdentity my_id;
153
154/**
155 * Task that periodically ages our cover traffic statistics.
156 *
157 * @param cls unused closure
158 * @param tc task context
159 */
160static void
161age_cover_counters (void *cls,
162 const struct GNUNET_SCHEDULER_TaskContext *tc)
163{
164 GSF_cover_content_count = (GSF_cover_content_count * 15) / 16;
165 GSF_cover_query_count = (GSF_cover_query_count * 15) / 16;
166 cover_age_task = GNUNET_SCHEDULER_add_delayed (COVER_AGE_FREQUENCY,
167 &age_cover_counters,
168 NULL);
169}
170
171
172
173/**
174 * We've just now completed a datastore request. Update our
175 * datastore load calculations.
176 *
177 * @param start time when the datastore request was issued
178 */
179void
180GSF_update_datastore_delay_ (struct GNUNET_TIME_Absolute start)
181{
182 struct GNUNET_TIME_Relative delay;
183
184 delay = GNUNET_TIME_absolute_get_duration (start);
185 GNUNET_LOAD_update (datastore_get_load,
186 delay.rel_value);
187}
188
189
190/**
191 * Test if the DATABASE (GET) load on this peer is too high
192 * to even consider processing the query at
193 * all.
194 *
195 * @return GNUNET_YES if the load is too high to do anything (load high)
196 * GNUNET_NO to process normally (load normal)
197 * GNUNET_SYSERR to process for free (load low)
198 */
199int
200GSF_test_get_load_too_high_ (uint32_t priority)
201{
202 double ld;
203
204 ld = GNUNET_LOAD_get_load (datastore_get_load);
205 if (ld < 1)
206 return GNUNET_SYSERR;
207 if (ld <= priority)
208 return GNUNET_NO;
209 return GNUNET_YES;
210}
211
212
213/**
214 * Handle P2P "PUT" message.
215 *
216 * @param cls closure, always NULL
217 * @param other the other peer involved (sender or receiver, NULL
218 * for loopback messages where we are both sender and receiver)
219 * @param message the actual message
220 * @param atsi performance information
221 * @return GNUNET_OK to keep the connection open,
222 * GNUNET_SYSERR to close it (signal serious error)
223 */
224static int
225handle_p2p_put (void *cls,
226 const struct GNUNET_PeerIdentity *other,
227 const struct GNUNET_MessageHeader *message,
228 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
229{
230 struct GSF_ConnectedPeer *cp;
231
232 cp = GSF_peer_get_ (other);
233 if (NULL == cp)
234 {
235 GNUNET_break (0);
236 return GNUNET_OK;
237 }
238 return GSF_handle_p2p_content_ (cp, message);
239}
240
241
242/**
243 * We have a new request, consider forwarding it to the given
244 * peer.
245 *
246 * @param cls the 'struct GSF_PendingRequest'
247 * @param peer identity of the peer
248 * @param cp handle to the connected peer record
249 * @param ppd peer performance data
250 */
251static void
252consider_request_for_forwarding (void *cls,
253 const struct GNUNET_PeerIdentity *peer,
254 struct GSF_ConnectedPeer *cp,
255 const struct GSF_PeerPerformanceData *ppd)
256{
257 struct GSF_PendingRequest *pr = cls;
258
259 GSF_plan_add_ (cp, pr);
260}
261
262
263/**
264 * Function to be called after we're done processing
265 * replies from the local lookup. If the result status
266 * code indicates that there may be more replies, plan
267 * forwarding the request.
268 *
269 * @param cls closure (NULL)
270 * @param pr the pending request we were processing
271 * @param result final datastore lookup result
272 */
273static void
274consider_forwarding (void *cls,
275 struct GSF_PendingRequest *pr,
276 enum GNUNET_BLOCK_EvaluationResult result)
277{
278 if (GNUNET_BLOCK_EVALUATION_OK_LAST == result)
279 return; /* we're done... */
280 GSF_iterate_connected_peers_ (&consider_request_for_forwarding,
281 pr);
282}
283
284
285/**
286 * Handle P2P "GET" request.
287 *
288 * @param cls closure, always NULL
289 * @param other the other peer involved (sender or receiver, NULL
290 * for loopback messages where we are both sender and receiver)
291 * @param message the actual message
292 * @param atsi performance information
293 * @return GNUNET_OK to keep the connection open,
294 * GNUNET_SYSERR to close it (signal serious error)
295 */
296static int
297handle_p2p_get (void *cls,
298 const struct GNUNET_PeerIdentity *other,
299 const struct GNUNET_MessageHeader *message,
300 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
301{
302 struct GSF_PendingRequest *pr;
303
304 pr = GSF_handle_p2p_query_ (other, message);
305 if (NULL == pr)
306 return GNUNET_SYSERR;
307 GSF_local_lookup_ (pr,
308 &consider_forwarding,
309 NULL);
310 return GNUNET_OK;
311}
312
313
314/**
315 * We're done with the local lookup, now consider
316 * P2P processing (depending on request options and
317 * result status). Also signal that we can now
318 * receive more request information from the client.
319 *
320 * @param cls the client doing the request ('struct GNUNET_SERVER_Client')
321 * @param pr the pending request we were processing
322 * @param result final datastore lookup result
323 */
324static void
325start_p2p_processing (void *cls,
326 struct GSF_PendingRequest *pr,
327 enum GNUNET_BLOCK_EvaluationResult result)
328{
329 struct GNUNET_SERVER_Client *client = cls;
330 struct GSF_PendingRequestData *prd;
331
332 prd = GSF_pending_request_get_data_ (pr);
333#if DEBUG_FS
334 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
335 "Finished database lookup for local request `%s' with result %d\n",
336 GNUNET_h2s (&prd->query),
337 result);
338#endif
339 GNUNET_SERVER_receive_done (client,
340 GNUNET_OK);
341 if (GNUNET_BLOCK_EVALUATION_OK_LAST == result)
342 return; /* we're done, 'pr' was already destroyed... */
343 if (0 != (GSF_PRO_LOCAL_ONLY & prd->options) )
344 {
345 GSF_pending_request_cancel_ (pr);
346 return;
347 }
348 GSF_dht_lookup_ (pr);
349 consider_forwarding (NULL, pr, result);
350}
351
352
353/**
354 * Handle START_SEARCH-message (search request from client).
355 *
356 * @param cls closure
357 * @param client identification of the client
358 * @param message the actual message
359 */
360static void
361handle_start_search (void *cls,
362 struct GNUNET_SERVER_Client *client,
363 const struct GNUNET_MessageHeader *message)
364{
365 struct GSF_PendingRequest *pr;
366
367 pr = GSF_local_client_start_search_handler_ (client, message);
368 if (NULL == pr)
369 {
370 /* 'GNUNET_SERVER_receive_done was already called! */
371 return;
372 }
373 GSF_local_lookup_ (pr,
374 &start_p2p_processing,
375 client);
376}
377
378
379/**
380 * Task run during shutdown.
381 *
382 * @param cls unused
383 * @param tc unused
384 */
385static void
386shutdown_task (void *cls,
387 const struct GNUNET_SCHEDULER_TaskContext *tc)
388{
389 if (NULL != GSF_core)
390 {
391 GNUNET_CORE_disconnect (GSF_core);
392 GSF_core = NULL;
393 }
394 GSF_put_done_ ();
395 GSF_push_done_ ();
396 GSF_pending_request_done_ ();
397 GSF_plan_done ();
398 GSF_connected_peer_done_ ();
399 GNUNET_DATASTORE_disconnect (GSF_dsh, GNUNET_NO);
400 GSF_dsh = NULL;
401 GNUNET_DHT_disconnect (GSF_dht);
402 GSF_dht = NULL;
403 GNUNET_BLOCK_context_destroy (GSF_block_ctx);
404 GSF_block_ctx = NULL;
405 GNUNET_CONFIGURATION_destroy (block_cfg);
406 block_cfg = NULL;
407 GNUNET_STATISTICS_destroy (GSF_stats, GNUNET_NO);
408 if (GNUNET_SCHEDULER_NO_TASK != cover_age_task)
409 {
410 GNUNET_SCHEDULER_cancel (cover_age_task);
411 cover_age_task = GNUNET_SCHEDULER_NO_TASK;
412 }
413 GNUNET_FS_indexing_done ();
414 GNUNET_LOAD_value_free (datastore_get_load);
415 datastore_get_load = NULL;
416 GNUNET_LOAD_value_free (GSF_rt_entry_lifetime);
417 GSF_rt_entry_lifetime = NULL;
418}
419
420
421/**
422 * Function called for each pending request whenever a new
423 * peer connects, giving us a chance to decide about submitting
424 * the existing request to the new peer.
425 *
426 * @param cls the 'struct GSF_ConnectedPeer' of the new peer
427 * @param key query for the request
428 * @param pr handle to the pending request
429 * @return GNUNET_YES to continue to iterate
430 */
431static int
432consider_peer_for_forwarding (void *cls,
433 const GNUNET_HashCode *key,
434 struct GSF_PendingRequest *pr)
435{
436 struct GSF_ConnectedPeer *cp = cls;
437
438 GSF_plan_add_ (cp, pr);
439 return GNUNET_YES;
440}
441
442
443/**
444 * Method called whenever a given peer connects.
445 *
446 * @param cls closure, not used
447 * @param peer peer identity this notification is about
448 * @param atsi performance information
449 */
450static void
451peer_connect_handler (void *cls,
452 const struct GNUNET_PeerIdentity *peer,
453 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
454{
455 struct GSF_ConnectedPeer *cp;
456
457 if (0 == memcmp (&my_id, peer, sizeof (struct GNUNET_PeerIdentity)))
458 return;
459 cp = GSF_peer_connect_handler_ (peer, atsi);
460 if (NULL == cp)
461 return;
462 GSF_iterate_pending_requests_ (&consider_peer_for_forwarding,
463 cp);
464}
465
466
467/**
468 * Function called after GNUNET_CORE_connect has succeeded
469 * (or failed for good). Note that the private key of the
470 * peer is intentionally not exposed here; if you need it,
471 * your process should try to read the private key file
472 * directly (which should work if you are authorized...).
473 *
474 * @param cls closure
475 * @param server handle to the server, NULL if we failed
476 * @param my_identity ID of this peer, NULL if we failed
477 * @param publicKey public key of this peer, NULL if we failed
478 */
479static void
480peer_init_handler (void *cls,
481 struct GNUNET_CORE_Handle * server,
482 const struct GNUNET_PeerIdentity *
483 my_identity,
484 const struct
485 GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *
486 publicKey)
487{
488 my_id = *my_identity;
489}
490
491
492/**
493 * Process fs requests.
494 *
495 * @param server the initialized server
496 * @param c configuration to use
497 */
498static int
499main_init (struct GNUNET_SERVER_Handle *server,
500 const struct GNUNET_CONFIGURATION_Handle *c)
501{
502 static const struct GNUNET_CORE_MessageHandler p2p_handlers[] =
503 {
504 { &handle_p2p_get,
505 GNUNET_MESSAGE_TYPE_FS_GET, 0 },
506 { &handle_p2p_put,
507 GNUNET_MESSAGE_TYPE_FS_PUT, 0 },
508 { &GSF_handle_p2p_migration_stop_,
509 GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP,
510 sizeof (struct MigrationStopMessage) },
511 { NULL, 0, 0 }
512 };
513 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
514 {&GNUNET_FS_handle_index_start, NULL,
515 GNUNET_MESSAGE_TYPE_FS_INDEX_START, 0},
516 {&GNUNET_FS_handle_index_list_get, NULL,
517 GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_GET, sizeof(struct GNUNET_MessageHeader) },
518 {&GNUNET_FS_handle_unindex, NULL, GNUNET_MESSAGE_TYPE_FS_UNINDEX,
519 sizeof (struct UnindexMessage) },
520 {&handle_start_search, NULL, GNUNET_MESSAGE_TYPE_FS_START_SEARCH,
521 0 },
522 {NULL, NULL, 0, 0}
523 };
524
525 GSF_core = GNUNET_CORE_connect (GSF_cfg,
526 2, /* larger? */
527 NULL,
528 &peer_init_handler,
529 &peer_connect_handler,
530 &GSF_peer_disconnect_handler_,
531 &GSF_peer_status_handler_,
532 NULL, GNUNET_NO,
533 NULL, GNUNET_NO,
534 p2p_handlers);
535 if (NULL == GSF_core)
536 {
537 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
538 _("Failed to connect to `%s' service.\n"),
539 "core");
540 return GNUNET_SYSERR;
541 }
542 GNUNET_SERVER_disconnect_notify (server,
543 &GSF_client_disconnect_handler_,
544 NULL);
545 GNUNET_SERVER_add_handlers (server, handlers);
546 cover_age_task = GNUNET_SCHEDULER_add_delayed (COVER_AGE_FREQUENCY,
547 &age_cover_counters,
548 NULL);
549 datastore_get_load = GNUNET_LOAD_value_init (DATASTORE_LOAD_AUTODECLINE);
550 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
551 &shutdown_task,
552 NULL);
553 return GNUNET_OK;
554}
555
556
557/**
558 * Process fs requests.
559 *
560 * @param cls closure
561 * @param server the initialized server
562 * @param cfg configuration to use
563 */
564static void
565run (void *cls,
566 struct GNUNET_SERVER_Handle *server,
567 const struct GNUNET_CONFIGURATION_Handle *cfg)
568{
569 GSF_cfg = cfg;
570 GSF_dsh = GNUNET_DATASTORE_connect (cfg);
571 if (NULL == GSF_dsh)
572 {
573 GNUNET_SCHEDULER_shutdown ();
574 return;
575 }
576 GSF_rt_entry_lifetime = GNUNET_LOAD_value_init (GNUNET_TIME_UNIT_FOREVER_REL);
577 GSF_stats = GNUNET_STATISTICS_create ("fs", cfg);
578 block_cfg = GNUNET_CONFIGURATION_create ();
579 GNUNET_CONFIGURATION_set_value_string (block_cfg,
580 "block",
581 "PLUGINS",
582 "fs");
583 GSF_block_ctx = GNUNET_BLOCK_context_create (block_cfg);
584 GNUNET_assert (NULL != GSF_block_ctx);
585 GSF_dht = GNUNET_DHT_connect (cfg,
586 FS_DHT_HT_SIZE);
587 GSF_plan_init ();
588 GSF_pending_request_init_ ();
589 GSF_connected_peer_init_ ();
590 GSF_push_init_ ();
591 GSF_put_init_ ();
592 if ( (GNUNET_OK != GNUNET_FS_indexing_init (cfg, GSF_dsh)) ||
593
594 (GNUNET_OK != main_init (server, cfg)) )
595 {
596 GNUNET_SCHEDULER_shutdown ();
597 shutdown_task (NULL, NULL);
598 return;
599 }
600}
601
602
603/**
604 * The main function for the fs service.
605 *
606 * @param argc number of arguments from the command line
607 * @param argv command line arguments
608 * @return 0 ok, 1 on error
609 */
610int
611main (int argc, char *const *argv)
612{
613 return (GNUNET_OK ==
614 GNUNET_SERVICE_run (argc,
615 argv,
616 "fs",
617 GNUNET_SERVICE_OPTION_NONE,
618 &run, NULL)) ? 0 : 1;
619}
620
621/* end of gnunet-service-fs.c */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-15 00:10:35 +0000