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Diffstat (limited to 'src/fs/gnunet-service-fs.c')
-rw-r--r-- | src/fs/gnunet-service-fs.c | 1425 |
1 files changed, 0 insertions, 1425 deletions
diff --git a/src/fs/gnunet-service-fs.c b/src/fs/gnunet-service-fs.c deleted file mode 100644 index e90ba4c8b..000000000 --- a/src/fs/gnunet-service-fs.c +++ /dev/null | |||
@@ -1,1425 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2009-2014, 2016 GNUnet e.V. | ||
4 | |||
5 | GNUnet is free software: you can redistribute it and/or modify it | ||
6 | under the terms of the GNU Affero General Public License as published | ||
7 | by the Free Software Foundation, either version 3 of the License, | ||
8 | or (at your 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 | Affero General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Affero General Public License | ||
16 | along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
17 | |||
18 | SPDX-License-Identifier: AGPL3.0-or-later | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file fs/gnunet-service-fs.c | ||
23 | * @brief gnunet anonymity protocol implementation | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include <float.h> | ||
28 | #include "gnunet_constants.h" | ||
29 | #include "gnunet_core_service.h" | ||
30 | #include "gnunet_dht_service.h" | ||
31 | #include "gnunet_datastore_service.h" | ||
32 | #include "gnunet_load_lib.h" | ||
33 | #include "gnunet_peer_lib.h" | ||
34 | #include "gnunet_protocols.h" | ||
35 | #include "gnunet_signatures.h" | ||
36 | #include "gnunet_statistics_service.h" | ||
37 | #include "gnunet_transport_service.h" | ||
38 | #include "gnunet_util_lib.h" | ||
39 | #include "gnunet-service-fs_cp.h" | ||
40 | #include "gnunet-service-fs_indexing.h" | ||
41 | #include "gnunet-service-fs_pe.h" | ||
42 | #include "gnunet-service-fs_pr.h" | ||
43 | #include "gnunet-service-fs_push.h" | ||
44 | #include "gnunet-service-fs_put.h" | ||
45 | #include "gnunet-service-fs_cadet.h" | ||
46 | #include "fs.h" | ||
47 | #include "fs_api.h" | ||
48 | |||
49 | /** | ||
50 | * Size for the hash map for DHT requests from the FS | ||
51 | * service. Should be about the number of concurrent | ||
52 | * DHT requests we plan to make. | ||
53 | */ | ||
54 | #define FS_DHT_HT_SIZE 1024 | ||
55 | |||
56 | |||
57 | /** | ||
58 | * How quickly do we age cover traffic? At the given | ||
59 | * time interval, remaining cover traffic counters are | ||
60 | * decremented by 1/16th. | ||
61 | */ | ||
62 | #define COVER_AGE_FREQUENCY GNUNET_TIME_relative_multiply ( \ | ||
63 | GNUNET_TIME_UNIT_SECONDS, 5) | ||
64 | |||
65 | /** | ||
66 | * Collect an instance number of statistics? May cause excessive IPC. | ||
67 | */ | ||
68 | #define INSANE_STATISTICS GNUNET_NO | ||
69 | |||
70 | |||
71 | /** | ||
72 | * Doubly-linked list of requests we are performing | ||
73 | * on behalf of the same client. | ||
74 | */ | ||
75 | struct ClientRequest | ||
76 | { | ||
77 | /** | ||
78 | * This is a doubly-linked list. | ||
79 | */ | ||
80 | struct ClientRequest *next; | ||
81 | |||
82 | /** | ||
83 | * This is a doubly-linked list. | ||
84 | */ | ||
85 | struct ClientRequest *prev; | ||
86 | |||
87 | /** | ||
88 | * Request this entry represents. | ||
89 | */ | ||
90 | struct GSF_PendingRequest *pr; | ||
91 | |||
92 | /** | ||
93 | * Client list this request belongs to. | ||
94 | */ | ||
95 | struct GSF_LocalClient *lc; | ||
96 | |||
97 | /** | ||
98 | * Task scheduled to destroy the request. | ||
99 | */ | ||
100 | struct GNUNET_SCHEDULER_Task *kill_task; | ||
101 | }; | ||
102 | |||
103 | |||
104 | /** | ||
105 | * Replies to be transmitted to the client. The actual | ||
106 | * response message is allocated after this struct. | ||
107 | */ | ||
108 | struct ClientResponse | ||
109 | { | ||
110 | /** | ||
111 | * This is a doubly-linked list. | ||
112 | */ | ||
113 | struct ClientResponse *next; | ||
114 | |||
115 | /** | ||
116 | * This is a doubly-linked list. | ||
117 | */ | ||
118 | struct ClientResponse *prev; | ||
119 | |||
120 | /** | ||
121 | * Client list entry this response belongs to. | ||
122 | */ | ||
123 | struct GSF_LocalClient *lc; | ||
124 | |||
125 | /** | ||
126 | * Number of bytes in the response. | ||
127 | */ | ||
128 | size_t msize; | ||
129 | }; | ||
130 | |||
131 | |||
132 | /** | ||
133 | * Information we track while handling an index | ||
134 | * start request from a client. | ||
135 | */ | ||
136 | struct IndexStartContext | ||
137 | { | ||
138 | /** | ||
139 | * This is a doubly linked list. | ||
140 | */ | ||
141 | struct IndexStartContext *next; | ||
142 | |||
143 | /** | ||
144 | * This is a doubly linked list. | ||
145 | */ | ||
146 | struct IndexStartContext *prev; | ||
147 | |||
148 | /** | ||
149 | * Name of the indexed file. | ||
150 | */ | ||
151 | char *filename; | ||
152 | |||
153 | /** | ||
154 | * Context for transmitting confirmation to client. | ||
155 | */ | ||
156 | struct GSF_LocalClient *lc; | ||
157 | |||
158 | /** | ||
159 | * Context for hashing of the file. | ||
160 | */ | ||
161 | struct GNUNET_CRYPTO_FileHashContext *fhc; | ||
162 | |||
163 | /** | ||
164 | * Hash of the contents of the file. | ||
165 | */ | ||
166 | struct GNUNET_HashCode file_id; | ||
167 | }; | ||
168 | |||
169 | |||
170 | /** | ||
171 | * A local client. | ||
172 | */ | ||
173 | struct GSF_LocalClient | ||
174 | { | ||
175 | /** | ||
176 | * ID of the client. | ||
177 | */ | ||
178 | struct GNUNET_SERVICE_Client *client; | ||
179 | |||
180 | /** | ||
181 | * Queue for sending replies. | ||
182 | */ | ||
183 | struct GNUNET_MQ_Handle *mq; | ||
184 | |||
185 | /** | ||
186 | * Head of list of requests performed on behalf | ||
187 | * of this client right now. | ||
188 | */ | ||
189 | struct ClientRequest *cr_head; | ||
190 | |||
191 | /** | ||
192 | * Tail of list of requests performed on behalf | ||
193 | * of this client right now. | ||
194 | */ | ||
195 | struct ClientRequest *cr_tail; | ||
196 | |||
197 | /** | ||
198 | * This is a doubly linked list. | ||
199 | */ | ||
200 | struct IndexStartContext *isc_head; | ||
201 | |||
202 | /** | ||
203 | * This is a doubly linked list. | ||
204 | */ | ||
205 | struct IndexStartContext *isc_tail; | ||
206 | |||
207 | /** | ||
208 | * Head of linked list of responses. | ||
209 | */ | ||
210 | struct ClientResponse *res_head; | ||
211 | |||
212 | /** | ||
213 | * Tail of linked list of responses. | ||
214 | */ | ||
215 | struct ClientResponse *res_tail; | ||
216 | }; | ||
217 | |||
218 | |||
219 | /* ****************************** globals ****************************** */ | ||
220 | |||
221 | /** | ||
222 | * Our connection to the datastore. | ||
223 | */ | ||
224 | struct GNUNET_DATASTORE_Handle *GSF_dsh; | ||
225 | |||
226 | /** | ||
227 | * Our configuration. | ||
228 | */ | ||
229 | const struct GNUNET_CONFIGURATION_Handle *GSF_cfg; | ||
230 | |||
231 | /** | ||
232 | * Handle for reporting statistics. | ||
233 | */ | ||
234 | struct GNUNET_STATISTICS_Handle *GSF_stats; | ||
235 | |||
236 | /** | ||
237 | * Handle for DHT operations. | ||
238 | */ | ||
239 | struct GNUNET_DHT_Handle *GSF_dht; | ||
240 | |||
241 | /** | ||
242 | * How long do requests typically stay in the routing table? | ||
243 | */ | ||
244 | struct GNUNET_LOAD_Value *GSF_rt_entry_lifetime; | ||
245 | |||
246 | /** | ||
247 | * Running average of the observed latency to other peers (round trip). | ||
248 | * Initialized to 5s as the initial default. | ||
249 | */ | ||
250 | struct GNUNET_TIME_Relative GSF_avg_latency = { 500 }; | ||
251 | |||
252 | /** | ||
253 | * Handle to ATS service. | ||
254 | */ | ||
255 | struct GNUNET_ATS_PerformanceHandle *GSF_ats; | ||
256 | |||
257 | |||
258 | /** | ||
259 | * Typical priorities we're seeing from other peers right now. Since | ||
260 | * most priorities will be zero, this value is the weighted average of | ||
261 | * non-zero priorities seen "recently". In order to ensure that new | ||
262 | * values do not dramatically change the ratio, values are first | ||
263 | * "capped" to a reasonable range (+N of the current value) and then | ||
264 | * averaged into the existing value by a ratio of 1:N. Hence | ||
265 | * receiving the largest possible priority can still only raise our | ||
266 | * "current_priorities" by at most 1. | ||
267 | */ | ||
268 | double GSF_current_priorities; | ||
269 | |||
270 | /** | ||
271 | * Size of the datastore queue we assume for common requests. | ||
272 | */ | ||
273 | unsigned int GSF_datastore_queue_size; | ||
274 | |||
275 | /** | ||
276 | * How many query messages have we received 'recently' that | ||
277 | * have not yet been claimed as cover traffic? | ||
278 | */ | ||
279 | unsigned int GSF_cover_query_count; | ||
280 | |||
281 | /** | ||
282 | * How many content messages have we received 'recently' that | ||
283 | * have not yet been claimed as cover traffic? | ||
284 | */ | ||
285 | unsigned int GSF_cover_content_count; | ||
286 | |||
287 | /** | ||
288 | * Our block context. | ||
289 | */ | ||
290 | struct GNUNET_BLOCK_Context *GSF_block_ctx; | ||
291 | |||
292 | /** | ||
293 | * Pointer to handle to the core service (points to NULL until we've | ||
294 | * connected to it). | ||
295 | */ | ||
296 | struct GNUNET_CORE_Handle *GSF_core; | ||
297 | |||
298 | /** | ||
299 | * Are we introducing randomized delays for better anonymity? | ||
300 | */ | ||
301 | int GSF_enable_randomized_delays; | ||
302 | |||
303 | /** | ||
304 | * Identity of this peer. | ||
305 | */ | ||
306 | struct GNUNET_PeerIdentity GSF_my_id; | ||
307 | |||
308 | /* ***************************** locals ******************************* */ | ||
309 | |||
310 | /** | ||
311 | * Configuration for block library. | ||
312 | */ | ||
313 | static struct GNUNET_CONFIGURATION_Handle *block_cfg; | ||
314 | |||
315 | /** | ||
316 | * Private key of this peer. Used to sign LOC URI requests. | ||
317 | */ | ||
318 | static struct GNUNET_CRYPTO_EddsaPrivateKey pk; | ||
319 | |||
320 | /** | ||
321 | * ID of our task that we use to age the cover counters. | ||
322 | */ | ||
323 | static struct GNUNET_SCHEDULER_Task *cover_age_task; | ||
324 | |||
325 | /** | ||
326 | * Datastore 'GET' load tracking. | ||
327 | */ | ||
328 | static struct GNUNET_LOAD_Value *datastore_get_load; | ||
329 | |||
330 | |||
331 | /** | ||
332 | * Creates a fresh local client handle. | ||
333 | * | ||
334 | * @param cls NULL | ||
335 | * @param client handle of the client | ||
336 | * @param mq message queue for @a client | ||
337 | * @return handle to local client entry | ||
338 | */ | ||
339 | static void * | ||
340 | client_connect_cb (void *cls, | ||
341 | struct GNUNET_SERVICE_Client *client, | ||
342 | struct GNUNET_MQ_Handle *mq) | ||
343 | { | ||
344 | struct GSF_LocalClient *pos; | ||
345 | |||
346 | pos = GNUNET_new (struct GSF_LocalClient); | ||
347 | pos->client = client; | ||
348 | pos->mq = mq; | ||
349 | return pos; | ||
350 | } | ||
351 | |||
352 | |||
353 | /** | ||
354 | * Free the given client request. | ||
355 | * | ||
356 | * @param cls the client request to free | ||
357 | */ | ||
358 | static void | ||
359 | client_request_destroy (void *cls) | ||
360 | { | ||
361 | struct ClientRequest *cr = cls; | ||
362 | struct GSF_LocalClient *lc = cr->lc; | ||
363 | |||
364 | cr->kill_task = NULL; | ||
365 | GNUNET_CONTAINER_DLL_remove (lc->cr_head, | ||
366 | lc->cr_tail, | ||
367 | cr); | ||
368 | GSF_pending_request_cancel_ (cr->pr, | ||
369 | GNUNET_YES); | ||
370 | GNUNET_STATISTICS_update (GSF_stats, | ||
371 | gettext_noop ("# client searches active"), | ||
372 | -1, | ||
373 | GNUNET_NO); | ||
374 | GNUNET_free (cr); | ||
375 | } | ||
376 | |||
377 | |||
378 | /** | ||
379 | * Handle a reply to a pending request. Also called if a request | ||
380 | * expires (then with data == NULL). The handler may be called | ||
381 | * many times (depending on the request type), but will not be | ||
382 | * called during or after a call to #GSF_pending_request_cancel() | ||
383 | * and will also not be called anymore after a call signalling | ||
384 | * expiration. | ||
385 | * | ||
386 | * @param cls user-specified closure | ||
387 | * @param eval evaluation of the result | ||
388 | * @param pr handle to the original pending request | ||
389 | * @param reply_anonymity_level anonymity level for the reply, UINT32_MAX for "unknown" | ||
390 | * @param expiration when does @a data expire? | ||
391 | * @param last_transmission when was the last time we've tried to download this block? (FOREVER if unknown) | ||
392 | * @param type type of the block | ||
393 | * @param data response data, NULL on request expiration | ||
394 | * @param data_len number of bytes in @a data | ||
395 | */ | ||
396 | static void | ||
397 | client_response_handler (void *cls, | ||
398 | enum GNUNET_BLOCK_EvaluationResult eval, | ||
399 | struct GSF_PendingRequest *pr, | ||
400 | uint32_t reply_anonymity_level, | ||
401 | struct GNUNET_TIME_Absolute expiration, | ||
402 | struct GNUNET_TIME_Absolute last_transmission, | ||
403 | enum GNUNET_BLOCK_Type type, | ||
404 | const void *data, | ||
405 | size_t data_len) | ||
406 | { | ||
407 | struct ClientRequest *cr = cls; | ||
408 | struct GSF_LocalClient *lc; | ||
409 | struct GNUNET_MQ_Envelope *env; | ||
410 | struct ClientPutMessage *pm; | ||
411 | const struct GSF_PendingRequestData *prd; | ||
412 | |||
413 | if (NULL == data) | ||
414 | { | ||
415 | /* local-only request, with no result, clean up. */ | ||
416 | if (NULL == cr->kill_task) | ||
417 | cr->kill_task = GNUNET_SCHEDULER_add_now (&client_request_destroy, | ||
418 | cr); | ||
419 | return; | ||
420 | } | ||
421 | prd = GSF_pending_request_get_data_ (pr); | ||
422 | GNUNET_break (type != GNUNET_BLOCK_TYPE_ANY); | ||
423 | if ((prd->type != type) && (prd->type != GNUNET_BLOCK_TYPE_ANY)) | ||
424 | { | ||
425 | GNUNET_break (0); | ||
426 | return; | ||
427 | } | ||
428 | GNUNET_STATISTICS_update (GSF_stats, | ||
429 | gettext_noop | ||
430 | ("# replies received for local clients"), 1, | ||
431 | GNUNET_NO); | ||
432 | GNUNET_assert (pr == cr->pr); | ||
433 | lc = cr->lc; | ||
434 | env = GNUNET_MQ_msg_extra (pm, | ||
435 | data_len, | ||
436 | GNUNET_MESSAGE_TYPE_FS_PUT); | ||
437 | pm->type = htonl (type); | ||
438 | pm->expiration = GNUNET_TIME_absolute_hton (expiration); | ||
439 | pm->last_transmission = GNUNET_TIME_absolute_hton (last_transmission); | ||
440 | pm->num_transmissions = htonl (prd->num_transmissions); | ||
441 | pm->respect_offered = htonl (prd->respect_offered); | ||
442 | GNUNET_memcpy (&pm[1], | ||
443 | data, | ||
444 | data_len); | ||
445 | GNUNET_MQ_send (lc->mq, | ||
446 | env); | ||
447 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
448 | "Queued reply to query `%s' for local client\n", | ||
449 | GNUNET_h2s (&prd->query)); | ||
450 | if (GNUNET_BLOCK_EVALUATION_OK_LAST != eval) | ||
451 | { | ||
452 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
453 | "Evaluation %d - keeping query alive\n", | ||
454 | (int) eval); | ||
455 | return; | ||
456 | } | ||
457 | if (NULL == cr->kill_task) | ||
458 | cr->kill_task = GNUNET_SCHEDULER_add_now (&client_request_destroy, | ||
459 | cr); | ||
460 | } | ||
461 | |||
462 | |||
463 | /** | ||
464 | * A client disconnected from us. Tear down the local client | ||
465 | * record. | ||
466 | * | ||
467 | * @param cls unused | ||
468 | * @param client handle of the client | ||
469 | * @param app_ctx the `struct GSF_LocalClient` | ||
470 | */ | ||
471 | static void | ||
472 | client_disconnect_cb (void *cls, | ||
473 | struct GNUNET_SERVICE_Client *client, | ||
474 | void *app_ctx) | ||
475 | { | ||
476 | struct GSF_LocalClient *lc = app_ctx; | ||
477 | struct IndexStartContext *isc; | ||
478 | struct ClientRequest *cr; | ||
479 | struct ClientResponse *res; | ||
480 | |||
481 | while (NULL != (cr = lc->cr_head)) | ||
482 | { | ||
483 | if (NULL != cr->kill_task) | ||
484 | GNUNET_SCHEDULER_cancel (cr->kill_task); | ||
485 | client_request_destroy (cr); | ||
486 | } | ||
487 | while (NULL != (res = lc->res_head)) | ||
488 | { | ||
489 | GNUNET_CONTAINER_DLL_remove (lc->res_head, | ||
490 | lc->res_tail, | ||
491 | res); | ||
492 | GNUNET_free (res); | ||
493 | } | ||
494 | while (NULL != (isc = lc->isc_head)) | ||
495 | { | ||
496 | GNUNET_CONTAINER_DLL_remove (lc->isc_head, | ||
497 | lc->isc_tail, | ||
498 | isc); | ||
499 | GNUNET_CRYPTO_hash_file_cancel (isc->fhc); | ||
500 | GNUNET_free (isc); | ||
501 | } | ||
502 | GNUNET_free (lc); | ||
503 | } | ||
504 | |||
505 | |||
506 | /** | ||
507 | * Task that periodically ages our cover traffic statistics. | ||
508 | * | ||
509 | * @param cls unused closure | ||
510 | */ | ||
511 | static void | ||
512 | age_cover_counters (void *cls) | ||
513 | { | ||
514 | GSF_cover_content_count = (GSF_cover_content_count * 15) / 16; | ||
515 | GSF_cover_query_count = (GSF_cover_query_count * 15) / 16; | ||
516 | cover_age_task = | ||
517 | GNUNET_SCHEDULER_add_delayed (COVER_AGE_FREQUENCY, | ||
518 | &age_cover_counters, | ||
519 | NULL); | ||
520 | } | ||
521 | |||
522 | |||
523 | /** | ||
524 | * We've just now completed a datastore request. Update our | ||
525 | * datastore load calculations. | ||
526 | * | ||
527 | * @param start time when the datastore request was issued | ||
528 | */ | ||
529 | void | ||
530 | GSF_update_datastore_delay_ (struct GNUNET_TIME_Absolute start) | ||
531 | { | ||
532 | struct GNUNET_TIME_Relative delay; | ||
533 | |||
534 | delay = GNUNET_TIME_absolute_get_duration (start); | ||
535 | GNUNET_LOAD_update (datastore_get_load, delay.rel_value_us); | ||
536 | } | ||
537 | |||
538 | |||
539 | /** | ||
540 | * Test if the DATABASE (GET) load on this peer is too high | ||
541 | * to even consider processing the query at | ||
542 | * all. | ||
543 | * | ||
544 | * @param priority priority of the request (used as a reference point to compare with the load) | ||
545 | * @return #GNUNET_YES if the load is too high to do anything (load high) | ||
546 | * #GNUNET_NO to process normally (load normal) | ||
547 | * #GNUNET_SYSERR to process for free (load low) | ||
548 | */ | ||
549 | int | ||
550 | GSF_test_get_load_too_high_ (uint32_t priority) | ||
551 | { | ||
552 | double ld; | ||
553 | |||
554 | ld = GNUNET_LOAD_get_load (datastore_get_load); | ||
555 | if (ld < 1) | ||
556 | return GNUNET_SYSERR; | ||
557 | if (ld <= priority) | ||
558 | return GNUNET_NO; | ||
559 | return GNUNET_YES; | ||
560 | } | ||
561 | |||
562 | |||
563 | /** | ||
564 | * We've received peer performance information. Update | ||
565 | * our running average for the P2P latency. | ||
566 | * | ||
567 | * @param cls closure | ||
568 | * @param address the address | ||
569 | * @param active is this address in active use | ||
570 | * @param bandwidth_out assigned outbound bandwidth for the connection | ||
571 | * @param bandwidth_in assigned inbound bandwidth for the connection | ||
572 | * @param prop performance data for the address (as far as known) | ||
573 | */ | ||
574 | static void | ||
575 | update_latencies (void *cls, | ||
576 | const struct GNUNET_HELLO_Address *address, | ||
577 | int active, | ||
578 | struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out, | ||
579 | struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, | ||
580 | const struct GNUNET_ATS_Properties *prop) | ||
581 | { | ||
582 | if (NULL == address) | ||
583 | { | ||
584 | /* ATS service temporarily disconnected */ | ||
585 | return; | ||
586 | } | ||
587 | |||
588 | if (GNUNET_YES != active) | ||
589 | return; | ||
590 | GSF_update_peer_latency_ (&address->peer, | ||
591 | prop->delay); | ||
592 | GSF_avg_latency.rel_value_us = | ||
593 | (GSF_avg_latency.rel_value_us * 31 | ||
594 | + GNUNET_MIN (5000, prop->delay.rel_value_us)) / 32; | ||
595 | GNUNET_STATISTICS_set (GSF_stats, | ||
596 | gettext_noop ("# running average P2P latency (ms)"), | ||
597 | GSF_avg_latency.rel_value_us / 1000LL, | ||
598 | GNUNET_NO); | ||
599 | } | ||
600 | |||
601 | |||
602 | /** | ||
603 | * Check P2P "PUT" message. | ||
604 | * | ||
605 | * @param cls closure with the `struct GSF_ConnectedPeer` | ||
606 | * @param message the actual message | ||
607 | * @return #GNUNET_OK to keep the connection open, | ||
608 | * #GNUNET_SYSERR to close it (signal serious error) | ||
609 | */ | ||
610 | static int | ||
611 | check_p2p_put (void *cls, | ||
612 | const struct PutMessage *put) | ||
613 | { | ||
614 | enum GNUNET_BLOCK_Type type; | ||
615 | |||
616 | type = ntohl (put->type); | ||
617 | if (GNUNET_BLOCK_TYPE_FS_ONDEMAND == type) | ||
618 | { | ||
619 | GNUNET_break_op (0); | ||
620 | return GNUNET_SYSERR; | ||
621 | } | ||
622 | return GNUNET_OK; | ||
623 | } | ||
624 | |||
625 | |||
626 | /** | ||
627 | * We have a new request, consider forwarding it to the given | ||
628 | * peer. | ||
629 | * | ||
630 | * @param cls the `struct GSF_PendingRequest` | ||
631 | * @param peer identity of the peer | ||
632 | * @param cp handle to the connected peer record | ||
633 | * @param ppd peer performance data | ||
634 | */ | ||
635 | static void | ||
636 | consider_request_for_forwarding (void *cls, | ||
637 | const struct GNUNET_PeerIdentity *peer, | ||
638 | struct GSF_ConnectedPeer *cp, | ||
639 | const struct GSF_PeerPerformanceData *ppd) | ||
640 | { | ||
641 | struct GSF_PendingRequest *pr = cls; | ||
642 | |||
643 | if (GNUNET_YES != | ||
644 | GSF_pending_request_test_target_ (pr, peer)) | ||
645 | { | ||
646 | #if INSANE_STATISTICS | ||
647 | GNUNET_STATISTICS_update (GSF_stats, | ||
648 | gettext_noop ("# Loopback routes suppressed"), 1, | ||
649 | GNUNET_NO); | ||
650 | #endif | ||
651 | return; | ||
652 | } | ||
653 | GSF_plan_add_ (cp, | ||
654 | pr); | ||
655 | } | ||
656 | |||
657 | |||
658 | /** | ||
659 | * Function to be called after we're done processing | ||
660 | * replies from the local lookup. If the result status | ||
661 | * code indicates that there may be more replies, plan | ||
662 | * forwarding the request. | ||
663 | * | ||
664 | * @param cls closure (NULL) | ||
665 | * @param pr the pending request we were processing | ||
666 | * @param result final datastore lookup result | ||
667 | */ | ||
668 | void | ||
669 | GSF_consider_forwarding (void *cls, | ||
670 | struct GSF_PendingRequest *pr, | ||
671 | enum GNUNET_BLOCK_EvaluationResult result) | ||
672 | { | ||
673 | if (GNUNET_BLOCK_EVALUATION_OK_LAST == result) | ||
674 | return; /* we're done... */ | ||
675 | if (GNUNET_YES != | ||
676 | GSF_pending_request_test_active_ (pr)) | ||
677 | return; /* request is not actually active, skip! */ | ||
678 | GSF_iterate_connected_peers_ (&consider_request_for_forwarding, | ||
679 | pr); | ||
680 | } | ||
681 | |||
682 | |||
683 | /** | ||
684 | * Check P2P "GET" request. | ||
685 | * | ||
686 | * @param cls closure | ||
687 | * @param gm the actual message | ||
688 | * @return #GNUNET_OK to keep the connection open, | ||
689 | * #GNUNET_SYSERR to close it (signal serious error) | ||
690 | */ | ||
691 | static int | ||
692 | check_p2p_get (void *cls, | ||
693 | const struct GetMessage *gm) | ||
694 | { | ||
695 | size_t msize; | ||
696 | unsigned int bm; | ||
697 | unsigned int bits; | ||
698 | size_t bfsize; | ||
699 | |||
700 | msize = ntohs (gm->header.size); | ||
701 | bm = ntohl (gm->hash_bitmap); | ||
702 | bits = 0; | ||
703 | while (bm > 0) | ||
704 | { | ||
705 | if (1 == (bm & 1)) | ||
706 | bits++; | ||
707 | bm >>= 1; | ||
708 | } | ||
709 | if (msize < sizeof(struct GetMessage) + bits * sizeof(struct | ||
710 | GNUNET_PeerIdentity)) | ||
711 | { | ||
712 | GNUNET_break_op (0); | ||
713 | return GNUNET_SYSERR; | ||
714 | } | ||
715 | bfsize = msize - sizeof(struct GetMessage) - bits * sizeof(struct | ||
716 | GNUNET_PeerIdentity); | ||
717 | /* bfsize must be power of 2, check! */ | ||
718 | if (0 != ((bfsize - 1) & bfsize)) | ||
719 | { | ||
720 | GNUNET_break_op (0); | ||
721 | return GNUNET_SYSERR; | ||
722 | } | ||
723 | return GNUNET_OK; | ||
724 | } | ||
725 | |||
726 | |||
727 | /** | ||
728 | * We're done with the local lookup, now consider | ||
729 | * P2P processing (depending on request options and | ||
730 | * result status). Also signal that we can now | ||
731 | * receive more request information from the client. | ||
732 | * | ||
733 | * @param cls the client doing the request (`struct GSF_LocalClient`) | ||
734 | * @param pr the pending request we were processing | ||
735 | * @param result final datastore lookup result | ||
736 | */ | ||
737 | static void | ||
738 | start_p2p_processing (void *cls, | ||
739 | struct GSF_PendingRequest *pr, | ||
740 | enum GNUNET_BLOCK_EvaluationResult result) | ||
741 | { | ||
742 | struct GSF_LocalClient *lc = cls; | ||
743 | struct GSF_PendingRequestData *prd; | ||
744 | |||
745 | GNUNET_SERVICE_client_continue (lc->client); | ||
746 | if (GNUNET_BLOCK_EVALUATION_OK_LAST == result) | ||
747 | return; /* we're done, 'pr' was already destroyed... */ | ||
748 | prd = GSF_pending_request_get_data_ (pr); | ||
749 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
750 | "Finished database lookup for local request `%s' with result %d\n", | ||
751 | GNUNET_h2s (&prd->query), | ||
752 | result); | ||
753 | if (0 == prd->anonymity_level) | ||
754 | { | ||
755 | switch (prd->type) | ||
756 | { | ||
757 | case GNUNET_BLOCK_TYPE_FS_DBLOCK: | ||
758 | case GNUNET_BLOCK_TYPE_FS_IBLOCK: | ||
759 | /* the above block types MAY be available via 'cadet' */ | ||
760 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
761 | "Considering cadet-based download for block\n"); | ||
762 | GSF_cadet_lookup_ (pr); | ||
763 | break; | ||
764 | |||
765 | case GNUNET_BLOCK_TYPE_FS_UBLOCK: | ||
766 | /* the above block types are in the DHT */ | ||
767 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
768 | "Considering DHT-based search for block\n"); | ||
769 | GSF_dht_lookup_ (pr); | ||
770 | break; | ||
771 | |||
772 | default: | ||
773 | GNUNET_break (0); | ||
774 | break; | ||
775 | } | ||
776 | } | ||
777 | GSF_consider_forwarding (NULL, | ||
778 | pr, | ||
779 | result); | ||
780 | } | ||
781 | |||
782 | |||
783 | /** | ||
784 | * Check #GNUNET_MESSAGE_TYPE_FS_START_SEARCH-message (search request | ||
785 | * from client). | ||
786 | * | ||
787 | * @param cls identification of the client | ||
788 | * @param sm the actual message | ||
789 | * @return #GNUNET_OK if @a sm is well-formed | ||
790 | */ | ||
791 | static int | ||
792 | check_client_start_search (void *cls, | ||
793 | const struct SearchMessage *sm) | ||
794 | { | ||
795 | uint16_t msize; | ||
796 | |||
797 | msize = ntohs (sm->header.size) - sizeof(struct SearchMessage); | ||
798 | if (0 != msize % sizeof(struct GNUNET_HashCode)) | ||
799 | { | ||
800 | GNUNET_break (0); | ||
801 | return GNUNET_SYSERR; | ||
802 | } | ||
803 | return GNUNET_OK; | ||
804 | } | ||
805 | |||
806 | |||
807 | /** | ||
808 | * Handle #GNUNET_MESSAGE_TYPE_FS_START_SEARCH-message (search request | ||
809 | * from client). | ||
810 | * | ||
811 | * Responsible for creating the request entry itself and setting | ||
812 | * up reply callback and cancellation on client disconnect. | ||
813 | * | ||
814 | * @param cls identification of the client | ||
815 | * @param sm the actual message | ||
816 | */ | ||
817 | static void | ||
818 | handle_client_start_search (void *cls, | ||
819 | const struct SearchMessage *sm) | ||
820 | { | ||
821 | static struct GNUNET_PeerIdentity all_zeros; | ||
822 | struct GSF_LocalClient *lc = cls; | ||
823 | struct ClientRequest *cr; | ||
824 | struct GSF_PendingRequestData *prd; | ||
825 | uint16_t msize; | ||
826 | unsigned int sc; | ||
827 | enum GNUNET_BLOCK_Type type; | ||
828 | enum GSF_PendingRequestOptions options; | ||
829 | |||
830 | GNUNET_STATISTICS_update (GSF_stats, | ||
831 | gettext_noop ("# client searches received"), | ||
832 | 1, | ||
833 | GNUNET_NO); | ||
834 | msize = ntohs (sm->header.size) - sizeof(struct SearchMessage); | ||
835 | sc = msize / sizeof(struct GNUNET_HashCode); | ||
836 | type = ntohl (sm->type); | ||
837 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
838 | "Received request for `%s' of type %u from local client\n", | ||
839 | GNUNET_h2s (&sm->query), | ||
840 | (unsigned int) type); | ||
841 | cr = NULL; | ||
842 | /* detect duplicate UBLOCK requests */ | ||
843 | if ((type == GNUNET_BLOCK_TYPE_FS_UBLOCK) || | ||
844 | (type == GNUNET_BLOCK_TYPE_ANY)) | ||
845 | { | ||
846 | cr = lc->cr_head; | ||
847 | while (NULL != cr) | ||
848 | { | ||
849 | prd = GSF_pending_request_get_data_ (cr->pr); | ||
850 | /* only unify with queries that hae not yet started local processing | ||
851 | (SEARCH_MESSAGE_OPTION_CONTINUED was always set) and that have a | ||
852 | matching query and type */ | ||
853 | if ((GNUNET_YES != prd->has_started) && | ||
854 | (0 != memcmp (&prd->query, | ||
855 | &sm->query, | ||
856 | sizeof(struct GNUNET_HashCode))) && | ||
857 | (prd->type == type)) | ||
858 | break; | ||
859 | cr = cr->next; | ||
860 | } | ||
861 | } | ||
862 | if (NULL != cr) | ||
863 | { | ||
864 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
865 | "Have existing request, merging content-seen lists.\n"); | ||
866 | GSF_pending_request_update_ (cr->pr, | ||
867 | (const struct GNUNET_HashCode *) &sm[1], | ||
868 | sc); | ||
869 | GNUNET_STATISTICS_update (GSF_stats, | ||
870 | gettext_noop ( | ||
871 | "# client searches updated (merged content seen list)"), | ||
872 | 1, | ||
873 | GNUNET_NO); | ||
874 | } | ||
875 | else | ||
876 | { | ||
877 | GNUNET_STATISTICS_update (GSF_stats, | ||
878 | gettext_noop ("# client searches active"), | ||
879 | 1, | ||
880 | GNUNET_NO); | ||
881 | cr = GNUNET_new (struct ClientRequest); | ||
882 | cr->lc = lc; | ||
883 | GNUNET_CONTAINER_DLL_insert (lc->cr_head, | ||
884 | lc->cr_tail, | ||
885 | cr); | ||
886 | options = GSF_PRO_LOCAL_REQUEST; | ||
887 | if (0 != (SEARCH_MESSAGE_OPTION_LOOPBACK_ONLY & ntohl (sm->options))) | ||
888 | options |= GSF_PRO_LOCAL_ONLY; | ||
889 | cr->pr = GSF_pending_request_create_ (options, type, | ||
890 | &sm->query, | ||
891 | (0 != | ||
892 | memcmp (&sm->target, | ||
893 | &all_zeros, | ||
894 | sizeof(struct | ||
895 | GNUNET_PeerIdentity))) | ||
896 | ? &sm->target : NULL, NULL, 0, | ||
897 | 0 /* bf */, | ||
898 | ntohl (sm->anonymity_level), | ||
899 | 0 /* priority */, | ||
900 | 0 /* ttl */, | ||
901 | 0 /* sender PID */, | ||
902 | 0 /* origin PID */, | ||
903 | (const struct | ||
904 | GNUNET_HashCode *) &sm[1], sc, | ||
905 | &client_response_handler, | ||
906 | cr); | ||
907 | } | ||
908 | if (0 != (SEARCH_MESSAGE_OPTION_CONTINUED & ntohl (sm->options))) | ||
909 | { | ||
910 | GNUNET_SERVICE_client_continue (lc->client); | ||
911 | return; | ||
912 | } | ||
913 | GSF_pending_request_get_data_ (cr->pr)->has_started = GNUNET_YES; | ||
914 | GSF_local_lookup_ (cr->pr, | ||
915 | &start_p2p_processing, | ||
916 | lc); | ||
917 | } | ||
918 | |||
919 | |||
920 | /** | ||
921 | * Handle request to sign a LOC URI (from client). | ||
922 | * | ||
923 | * @param cls identification of the client | ||
924 | * @param msg the actual message | ||
925 | */ | ||
926 | static void | ||
927 | handle_client_loc_sign (void *cls, | ||
928 | const struct RequestLocSignatureMessage *msg) | ||
929 | { | ||
930 | struct GSF_LocalClient *lc = cls; | ||
931 | struct GNUNET_FS_Uri base; | ||
932 | struct GNUNET_FS_Uri *loc; | ||
933 | struct GNUNET_MQ_Envelope *env; | ||
934 | struct ResponseLocSignatureMessage *resp; | ||
935 | |||
936 | GNUNET_break (GNUNET_SIGNATURE_PURPOSE_PEER_PLACEMENT == | ||
937 | ntohl (msg->purpose)); | ||
938 | base.type = GNUNET_FS_URI_CHK; | ||
939 | base.data.chk.chk = msg->chk; | ||
940 | base.data.chk.file_length = GNUNET_ntohll (msg->file_length); | ||
941 | loc = GNUNET_FS_uri_loc_create (&base, | ||
942 | &pk, | ||
943 | GNUNET_TIME_absolute_ntoh ( | ||
944 | msg->expiration_time)); | ||
945 | env = GNUNET_MQ_msg (resp, | ||
946 | GNUNET_MESSAGE_TYPE_FS_REQUEST_LOC_SIGNATURE); | ||
947 | resp->purpose = htonl (GNUNET_SIGNATURE_PURPOSE_PEER_PLACEMENT); | ||
948 | resp->expiration_time = GNUNET_TIME_absolute_hton ( | ||
949 | loc->data.loc.expirationTime); | ||
950 | resp->signature = loc->data.loc.contentSignature; | ||
951 | resp->peer = loc->data.loc.peer; | ||
952 | GNUNET_FS_uri_destroy (loc); | ||
953 | GNUNET_MQ_send (lc->mq, | ||
954 | env); | ||
955 | GNUNET_SERVICE_client_continue (lc->client); | ||
956 | } | ||
957 | |||
958 | |||
959 | /** | ||
960 | * Check INDEX_START-message. | ||
961 | * | ||
962 | * @param cls identification of the client | ||
963 | * @param ism the actual message | ||
964 | * @return #GNUNET_OK if @a ism is well-formed | ||
965 | */ | ||
966 | static int | ||
967 | check_client_index_start (void *cls, | ||
968 | const struct IndexStartMessage *ism) | ||
969 | { | ||
970 | char *fn; | ||
971 | |||
972 | GNUNET_MQ_check_zero_termination (ism); | ||
973 | if (0 != ism->reserved) | ||
974 | { | ||
975 | GNUNET_break (0); | ||
976 | return GNUNET_SYSERR; | ||
977 | } | ||
978 | fn = GNUNET_STRINGS_filename_expand ((const char *) &ism[1]); | ||
979 | if (NULL == fn) | ||
980 | { | ||
981 | GNUNET_break (0); | ||
982 | return GNUNET_SYSERR; | ||
983 | } | ||
984 | GNUNET_free (fn); | ||
985 | return GNUNET_OK; | ||
986 | } | ||
987 | |||
988 | |||
989 | /** | ||
990 | * We've validated the hash of the file we're about to index. Signal | ||
991 | * success to the client and update our internal data structures. | ||
992 | * | ||
993 | * @param isc the data about the index info entry for the request | ||
994 | */ | ||
995 | static void | ||
996 | signal_index_ok (struct IndexStartContext *isc) | ||
997 | { | ||
998 | struct GSF_LocalClient *lc = isc->lc; | ||
999 | struct GNUNET_MQ_Envelope *env; | ||
1000 | struct GNUNET_MessageHeader *msg; | ||
1001 | |||
1002 | GNUNET_FS_add_to_index (isc->filename, | ||
1003 | &isc->file_id); | ||
1004 | env = GNUNET_MQ_msg (msg, | ||
1005 | GNUNET_MESSAGE_TYPE_FS_INDEX_START_OK); | ||
1006 | GNUNET_MQ_send (lc->mq, | ||
1007 | env); | ||
1008 | GNUNET_free (isc->filename); | ||
1009 | GNUNET_free (isc); | ||
1010 | GNUNET_SERVICE_client_continue (lc->client); | ||
1011 | } | ||
1012 | |||
1013 | |||
1014 | /** | ||
1015 | * Function called once the hash computation over an | ||
1016 | * indexed file has completed. | ||
1017 | * | ||
1018 | * @param cls closure, our publishing context | ||
1019 | * @param res resulting hash, NULL on error | ||
1020 | */ | ||
1021 | static void | ||
1022 | hash_for_index_val (void *cls, | ||
1023 | const struct GNUNET_HashCode *res) | ||
1024 | { | ||
1025 | struct IndexStartContext *isc = cls; | ||
1026 | struct GSF_LocalClient *lc = isc->lc; | ||
1027 | struct GNUNET_MQ_Envelope *env; | ||
1028 | struct GNUNET_MessageHeader *msg; | ||
1029 | |||
1030 | GNUNET_CONTAINER_DLL_remove (lc->isc_head, | ||
1031 | lc->isc_tail, | ||
1032 | isc); | ||
1033 | isc->fhc = NULL; | ||
1034 | if ((NULL == res) || | ||
1035 | (0 != memcmp (res, | ||
1036 | &isc->file_id, | ||
1037 | sizeof(struct GNUNET_HashCode)))) | ||
1038 | { | ||
1039 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
1040 | _ ( | ||
1041 | "Hash mismatch trying to index file `%s' which does not have hash `%s'\n"), | ||
1042 | isc->filename, | ||
1043 | GNUNET_h2s (&isc->file_id)); | ||
1044 | env = GNUNET_MQ_msg (msg, | ||
1045 | GNUNET_MESSAGE_TYPE_FS_INDEX_START_FAILED); | ||
1046 | GNUNET_MQ_send (lc->mq, | ||
1047 | env); | ||
1048 | GNUNET_SERVICE_client_continue (lc->client); | ||
1049 | GNUNET_free (isc); | ||
1050 | return; | ||
1051 | } | ||
1052 | signal_index_ok (isc); | ||
1053 | } | ||
1054 | |||
1055 | |||
1056 | /** | ||
1057 | * Handle INDEX_START-message. | ||
1058 | * | ||
1059 | * @param cls identification of the client | ||
1060 | * @param message the actual message | ||
1061 | */ | ||
1062 | static void | ||
1063 | handle_client_index_start (void *cls, | ||
1064 | const struct IndexStartMessage *ism) | ||
1065 | { | ||
1066 | struct GSF_LocalClient *lc = cls; | ||
1067 | struct IndexStartContext *isc; | ||
1068 | char *fn; | ||
1069 | uint64_t dev; | ||
1070 | uint64_t ino; | ||
1071 | uint64_t mydev; | ||
1072 | uint64_t myino; | ||
1073 | |||
1074 | fn = GNUNET_STRINGS_filename_expand ((const char *) &ism[1]); | ||
1075 | GNUNET_assert (NULL != fn); | ||
1076 | dev = GNUNET_ntohll (ism->device); | ||
1077 | ino = GNUNET_ntohll (ism->inode); | ||
1078 | isc = GNUNET_new (struct IndexStartContext); | ||
1079 | isc->filename = fn; | ||
1080 | isc->file_id = ism->file_id; | ||
1081 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1082 | "Received START_INDEX message for file `%s'\n", | ||
1083 | isc->filename); | ||
1084 | isc->lc = lc; | ||
1085 | mydev = 0; | ||
1086 | myino = 0; | ||
1087 | if (((dev != 0) || | ||
1088 | (ino != 0)) && | ||
1089 | (GNUNET_OK == GNUNET_DISK_file_get_identifiers (fn, | ||
1090 | &mydev, | ||
1091 | &myino)) && | ||
1092 | (dev == mydev) && | ||
1093 | (ino == myino)) | ||
1094 | { | ||
1095 | /* fast validation OK! */ | ||
1096 | signal_index_ok (isc); | ||
1097 | return; | ||
1098 | } | ||
1099 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1100 | "Mismatch in file identifiers (%llu != %llu or %u != %u), need to hash.\n", | ||
1101 | (unsigned long long) ino, | ||
1102 | (unsigned long long) myino, | ||
1103 | (unsigned int) dev, | ||
1104 | (unsigned int) mydev); | ||
1105 | /* slow validation, need to hash full file (again) */ | ||
1106 | GNUNET_CONTAINER_DLL_insert (lc->isc_head, | ||
1107 | lc->isc_tail, | ||
1108 | isc); | ||
1109 | isc->fhc = GNUNET_CRYPTO_hash_file (GNUNET_SCHEDULER_PRIORITY_IDLE, | ||
1110 | isc->filename, | ||
1111 | HASHING_BLOCKSIZE, | ||
1112 | &hash_for_index_val, | ||
1113 | isc); | ||
1114 | if (NULL == isc->fhc) | ||
1115 | hash_for_index_val (isc, | ||
1116 | NULL); | ||
1117 | } | ||
1118 | |||
1119 | |||
1120 | /** | ||
1121 | * Handle INDEX_LIST_GET-message. | ||
1122 | * | ||
1123 | * @param cls closure | ||
1124 | * @param message the actual message | ||
1125 | */ | ||
1126 | static void | ||
1127 | handle_client_index_list_get (void *cls, | ||
1128 | const struct GNUNET_MessageHeader *message) | ||
1129 | { | ||
1130 | struct GSF_LocalClient *lc = cls; | ||
1131 | |||
1132 | GNUNET_FS_indexing_send_list (lc->mq); | ||
1133 | GNUNET_SERVICE_client_continue (lc->client); | ||
1134 | } | ||
1135 | |||
1136 | |||
1137 | /** | ||
1138 | * Handle UNINDEX-message. | ||
1139 | * | ||
1140 | * @param cls identification of the client | ||
1141 | * @param message the actual message | ||
1142 | */ | ||
1143 | static void | ||
1144 | handle_client_unindex (void *cls, | ||
1145 | const struct UnindexMessage *um) | ||
1146 | { | ||
1147 | struct GSF_LocalClient *lc = cls; | ||
1148 | struct GNUNET_MQ_Envelope *env; | ||
1149 | struct GNUNET_MessageHeader *msg; | ||
1150 | int found; | ||
1151 | |||
1152 | GNUNET_break (0 == um->reserved); | ||
1153 | found = GNUNET_FS_indexing_do_unindex (&um->file_id); | ||
1154 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1155 | "Client requested unindexing of file `%s': %s\n", | ||
1156 | GNUNET_h2s (&um->file_id), | ||
1157 | found ? "found" : "not found"); | ||
1158 | env = GNUNET_MQ_msg (msg, | ||
1159 | GNUNET_MESSAGE_TYPE_FS_UNINDEX_OK); | ||
1160 | GNUNET_MQ_send (lc->mq, | ||
1161 | env); | ||
1162 | GNUNET_SERVICE_client_continue (lc->client); | ||
1163 | } | ||
1164 | |||
1165 | |||
1166 | /** | ||
1167 | * Task run during shutdown. | ||
1168 | * | ||
1169 | * @param cls unused | ||
1170 | */ | ||
1171 | static void | ||
1172 | shutdown_task (void *cls) | ||
1173 | { | ||
1174 | GSF_cadet_stop_server (); | ||
1175 | if (NULL != GSF_core) | ||
1176 | { | ||
1177 | GNUNET_CORE_disconnect (GSF_core); | ||
1178 | GSF_core = NULL; | ||
1179 | } | ||
1180 | if (NULL != GSF_ats) | ||
1181 | { | ||
1182 | GNUNET_ATS_performance_done (GSF_ats); | ||
1183 | GSF_ats = NULL; | ||
1184 | } | ||
1185 | GSF_put_done_ (); | ||
1186 | GSF_push_done_ (); | ||
1187 | GSF_pending_request_done_ (); | ||
1188 | GSF_plan_done (); | ||
1189 | GSF_connected_peer_done_ (); | ||
1190 | GNUNET_DATASTORE_disconnect (GSF_dsh, | ||
1191 | GNUNET_NO); | ||
1192 | GSF_dsh = NULL; | ||
1193 | GNUNET_DHT_disconnect (GSF_dht); | ||
1194 | GSF_dht = NULL; | ||
1195 | GNUNET_BLOCK_context_destroy (GSF_block_ctx); | ||
1196 | GSF_block_ctx = NULL; | ||
1197 | GNUNET_CONFIGURATION_destroy (block_cfg); | ||
1198 | block_cfg = NULL; | ||
1199 | GNUNET_STATISTICS_destroy (GSF_stats, GNUNET_NO); | ||
1200 | GSF_stats = NULL; | ||
1201 | if (NULL != cover_age_task) | ||
1202 | { | ||
1203 | GNUNET_SCHEDULER_cancel (cover_age_task); | ||
1204 | cover_age_task = NULL; | ||
1205 | } | ||
1206 | GNUNET_FS_indexing_done (); | ||
1207 | GNUNET_LOAD_value_free (datastore_get_load); | ||
1208 | datastore_get_load = NULL; | ||
1209 | GNUNET_LOAD_value_free (GSF_rt_entry_lifetime); | ||
1210 | GSF_rt_entry_lifetime = NULL; | ||
1211 | } | ||
1212 | |||
1213 | |||
1214 | /** | ||
1215 | * Function called after GNUNET_CORE_connect has succeeded | ||
1216 | * (or failed for good). Note that the private key of the | ||
1217 | * peer is intentionally not exposed here; if you need it, | ||
1218 | * your process should try to read the private key file | ||
1219 | * directly (which should work if you are authorized...). | ||
1220 | * | ||
1221 | * @param cls closure | ||
1222 | * @param my_identity ID of this peer, NULL if we failed | ||
1223 | */ | ||
1224 | static void | ||
1225 | peer_init_handler (void *cls, | ||
1226 | const struct GNUNET_PeerIdentity *my_identity) | ||
1227 | { | ||
1228 | if (0 != GNUNET_memcmp (&GSF_my_id, | ||
1229 | my_identity)) | ||
1230 | { | ||
1231 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1232 | "Peer identity mismatch, refusing to start!\n"); | ||
1233 | GNUNET_SCHEDULER_shutdown (); | ||
1234 | } | ||
1235 | } | ||
1236 | |||
1237 | |||
1238 | /** | ||
1239 | * Process fs requests. | ||
1240 | * | ||
1241 | * @param c configuration to use | ||
1242 | */ | ||
1243 | static int | ||
1244 | main_init (const struct GNUNET_CONFIGURATION_Handle *c) | ||
1245 | { | ||
1246 | struct GNUNET_MQ_MessageHandler no_p2p_handlers[] = { | ||
1247 | GNUNET_MQ_handler_end () | ||
1248 | }; | ||
1249 | struct GNUNET_MQ_MessageHandler p2p_handlers[] = { | ||
1250 | GNUNET_MQ_hd_var_size (p2p_get, | ||
1251 | GNUNET_MESSAGE_TYPE_FS_GET, | ||
1252 | struct GetMessage, | ||
1253 | NULL), | ||
1254 | GNUNET_MQ_hd_var_size (p2p_put, | ||
1255 | GNUNET_MESSAGE_TYPE_FS_PUT, | ||
1256 | struct PutMessage, | ||
1257 | NULL), | ||
1258 | GNUNET_MQ_hd_fixed_size (p2p_migration_stop, | ||
1259 | GNUNET_MESSAGE_TYPE_FS_MIGRATION_STOP, | ||
1260 | struct MigrationStopMessage, | ||
1261 | NULL), | ||
1262 | GNUNET_MQ_handler_end () | ||
1263 | }; | ||
1264 | int anon_p2p_off; | ||
1265 | char *keyfile; | ||
1266 | |||
1267 | /* this option is really only for testcases that need to disable | ||
1268 | _anonymous_ file-sharing for some reason */ | ||
1269 | anon_p2p_off = (GNUNET_YES == | ||
1270 | GNUNET_CONFIGURATION_get_value_yesno (GSF_cfg, | ||
1271 | "fs", | ||
1272 | "DISABLE_ANON_TRANSFER")); | ||
1273 | |||
1274 | if (GNUNET_OK != | ||
1275 | GNUNET_CONFIGURATION_get_value_filename (GSF_cfg, | ||
1276 | "PEER", | ||
1277 | "PRIVATE_KEY", | ||
1278 | &keyfile)) | ||
1279 | { | ||
1280 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1281 | _ ( | ||
1282 | "FS service is lacking HOSTKEY configuration setting. Exiting.\n")); | ||
1283 | GNUNET_SCHEDULER_shutdown (); | ||
1284 | return GNUNET_SYSERR; | ||
1285 | } | ||
1286 | if (GNUNET_SYSERR == | ||
1287 | GNUNET_CRYPTO_eddsa_key_from_file (keyfile, | ||
1288 | GNUNET_YES, | ||
1289 | &pk)) | ||
1290 | { | ||
1291 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1292 | "Failed to setup peer's private key\n"); | ||
1293 | GNUNET_SCHEDULER_shutdown (); | ||
1294 | GNUNET_free (keyfile); | ||
1295 | return GNUNET_SYSERR; | ||
1296 | } | ||
1297 | GNUNET_free (keyfile); | ||
1298 | GNUNET_CRYPTO_eddsa_key_get_public (&pk, | ||
1299 | &GSF_my_id.public_key); | ||
1300 | |||
1301 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1302 | "I am peer %s\n", | ||
1303 | GNUNET_i2s (&GSF_my_id)); | ||
1304 | GSF_core | ||
1305 | = GNUNET_CORE_connect (GSF_cfg, | ||
1306 | NULL, | ||
1307 | &peer_init_handler, | ||
1308 | &GSF_peer_connect_handler, | ||
1309 | &GSF_peer_disconnect_handler, | ||
1310 | (GNUNET_YES == anon_p2p_off) | ||
1311 | ? no_p2p_handlers | ||
1312 | : p2p_handlers); | ||
1313 | if (NULL == GSF_core) | ||
1314 | { | ||
1315 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1316 | _ ("Failed to connect to `%s' service.\n"), | ||
1317 | "core"); | ||
1318 | return GNUNET_SYSERR; | ||
1319 | } | ||
1320 | cover_age_task = | ||
1321 | GNUNET_SCHEDULER_add_delayed (COVER_AGE_FREQUENCY, | ||
1322 | &age_cover_counters, | ||
1323 | NULL); | ||
1324 | datastore_get_load = GNUNET_LOAD_value_init (DATASTORE_LOAD_AUTODECLINE); | ||
1325 | GSF_cadet_start_server (); | ||
1326 | GNUNET_SCHEDULER_add_shutdown (&shutdown_task, | ||
1327 | NULL); | ||
1328 | return GNUNET_OK; | ||
1329 | } | ||
1330 | |||
1331 | |||
1332 | /** | ||
1333 | * Process fs requests. | ||
1334 | * | ||
1335 | * @param cls closure | ||
1336 | * @param cfg configuration to use | ||
1337 | * @param service the initialized service | ||
1338 | */ | ||
1339 | static void | ||
1340 | run (void *cls, | ||
1341 | const struct GNUNET_CONFIGURATION_Handle *cfg, | ||
1342 | struct GNUNET_SERVICE_Handle *service) | ||
1343 | { | ||
1344 | unsigned long long dqs; | ||
1345 | |||
1346 | GSF_cfg = cfg; | ||
1347 | if (GNUNET_OK != | ||
1348 | GNUNET_CONFIGURATION_get_value_size (GSF_cfg, | ||
1349 | "fs", | ||
1350 | "DATASTORE_QUEUE_SIZE", | ||
1351 | &dqs)) | ||
1352 | { | ||
1353 | GNUNET_log_config_missing (GNUNET_ERROR_TYPE_INFO, | ||
1354 | "fs", | ||
1355 | "DATASTORE_QUEUE_SIZE"); | ||
1356 | dqs = 32; | ||
1357 | } | ||
1358 | GSF_datastore_queue_size = (unsigned int) dqs; | ||
1359 | GSF_enable_randomized_delays = | ||
1360 | GNUNET_CONFIGURATION_get_value_yesno (cfg, "fs", "DELAY"); | ||
1361 | GSF_dsh = GNUNET_DATASTORE_connect (cfg); | ||
1362 | if (NULL == GSF_dsh) | ||
1363 | { | ||
1364 | GNUNET_SCHEDULER_shutdown (); | ||
1365 | return; | ||
1366 | } | ||
1367 | GSF_rt_entry_lifetime = GNUNET_LOAD_value_init (GNUNET_TIME_UNIT_FOREVER_REL); | ||
1368 | GSF_stats = GNUNET_STATISTICS_create ("fs", cfg); | ||
1369 | block_cfg = GNUNET_CONFIGURATION_create (); | ||
1370 | GSF_block_ctx = GNUNET_BLOCK_context_create (block_cfg); | ||
1371 | GNUNET_assert (NULL != GSF_block_ctx); | ||
1372 | GSF_dht = GNUNET_DHT_connect (cfg, FS_DHT_HT_SIZE); | ||
1373 | GSF_plan_init (); | ||
1374 | GSF_pending_request_init_ (); | ||
1375 | GSF_connected_peer_init_ (); | ||
1376 | GSF_ats = GNUNET_ATS_performance_init (GSF_cfg, | ||
1377 | &update_latencies, | ||
1378 | NULL); | ||
1379 | GSF_push_init_ (); | ||
1380 | GSF_put_init_ (); | ||
1381 | if ((GNUNET_OK != GNUNET_FS_indexing_init (cfg, | ||
1382 | GSF_dsh)) || | ||
1383 | (GNUNET_OK != main_init (cfg))) | ||
1384 | { | ||
1385 | GNUNET_SCHEDULER_shutdown (); | ||
1386 | shutdown_task (NULL); | ||
1387 | return; | ||
1388 | } | ||
1389 | } | ||
1390 | |||
1391 | |||
1392 | /** | ||
1393 | * Define "main" method using service macro. | ||
1394 | */ | ||
1395 | GNUNET_SERVICE_MAIN | ||
1396 | ("fs", | ||
1397 | GNUNET_SERVICE_OPTION_NONE, | ||
1398 | &run, | ||
1399 | &client_connect_cb, | ||
1400 | &client_disconnect_cb, | ||
1401 | NULL, | ||
1402 | GNUNET_MQ_hd_var_size (client_index_start, | ||
1403 | GNUNET_MESSAGE_TYPE_FS_INDEX_START, | ||
1404 | struct IndexStartMessage, | ||
1405 | NULL), | ||
1406 | GNUNET_MQ_hd_fixed_size (client_index_list_get, | ||
1407 | GNUNET_MESSAGE_TYPE_FS_INDEX_LIST_GET, | ||
1408 | struct GNUNET_MessageHeader, | ||
1409 | NULL), | ||
1410 | GNUNET_MQ_hd_fixed_size (client_unindex, | ||
1411 | GNUNET_MESSAGE_TYPE_FS_UNINDEX, | ||
1412 | struct UnindexMessage, | ||
1413 | NULL), | ||
1414 | GNUNET_MQ_hd_var_size (client_start_search, | ||
1415 | GNUNET_MESSAGE_TYPE_FS_START_SEARCH, | ||
1416 | struct SearchMessage, | ||
1417 | NULL), | ||
1418 | GNUNET_MQ_hd_fixed_size (client_loc_sign, | ||
1419 | GNUNET_MESSAGE_TYPE_FS_REQUEST_LOC_SIGN, | ||
1420 | struct RequestLocSignatureMessage, | ||
1421 | NULL), | ||
1422 | GNUNET_MQ_handler_end ()); | ||
1423 | |||
1424 | |||
1425 | /* end of gnunet-service-fs.c */ | ||