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Diffstat (limited to 'src/testbed/gnunet-service-testbed_links.c')
-rw-r--r-- | src/testbed/gnunet-service-testbed_links.c | 1467 |
1 files changed, 0 insertions, 1467 deletions
diff --git a/src/testbed/gnunet-service-testbed_links.c b/src/testbed/gnunet-service-testbed_links.c deleted file mode 100644 index fe87d64ea..000000000 --- a/src/testbed/gnunet-service-testbed_links.c +++ /dev/null | |||
@@ -1,1467 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2008--2013 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 testbed/gnunet-service-testbed_links.c | ||
23 | * @brief TESTBED service components that deals with starting slave controllers | ||
24 | * and establishing lateral links between controllers | ||
25 | * @author Sree Harsha Totakura | ||
26 | */ | ||
27 | |||
28 | #include "gnunet-service-testbed.h" | ||
29 | |||
30 | /** | ||
31 | * Redefine LOG with a changed log component string | ||
32 | */ | ||
33 | #ifdef LOG | ||
34 | #undef LOG | ||
35 | #endif | ||
36 | #define LOG(kind, ...) \ | ||
37 | GNUNET_log_from (kind, "testbed-links", __VA_ARGS__) | ||
38 | |||
39 | /** | ||
40 | * The event mask for the events we listen from sub-controllers | ||
41 | */ | ||
42 | #define EVENT_MASK (1LL << GNUNET_TESTBED_ET_OPERATION_FINISHED) | ||
43 | |||
44 | |||
45 | /** | ||
46 | * States of LCFContext | ||
47 | */ | ||
48 | enum LCFContextState | ||
49 | { | ||
50 | /** | ||
51 | * The Context has been initialized; Nothing has been done on it | ||
52 | */ | ||
53 | INIT, | ||
54 | |||
55 | /** | ||
56 | * Delegated host has been registered at the forwarding controller | ||
57 | */ | ||
58 | DELEGATED_HOST_REGISTERED, | ||
59 | |||
60 | /** | ||
61 | * The slave host has been registered at the forwarding controller | ||
62 | */ | ||
63 | SLAVE_HOST_REGISTERED, | ||
64 | |||
65 | /** | ||
66 | * The context has been finished (may have error) | ||
67 | */ | ||
68 | FINISHED | ||
69 | }; | ||
70 | |||
71 | |||
72 | /** | ||
73 | * Link controllers request forwarding context | ||
74 | */ | ||
75 | struct LCFContext | ||
76 | { | ||
77 | /** | ||
78 | * The LCFContext | ||
79 | */ | ||
80 | struct LCFContext *next; | ||
81 | |||
82 | /** | ||
83 | * The LCFContext | ||
84 | */ | ||
85 | struct LCFContext *prev; | ||
86 | |||
87 | /** | ||
88 | * The gateway which will pass the link message to delegated host | ||
89 | */ | ||
90 | struct Slave *gateway; | ||
91 | |||
92 | /** | ||
93 | * The client which has asked to perform this operation | ||
94 | */ | ||
95 | struct GNUNET_SERVICE_Client *client; | ||
96 | |||
97 | /** | ||
98 | * Handle for operations which are forwarded while linking controllers | ||
99 | */ | ||
100 | struct GNUNET_TESTBED_Operation *op; | ||
101 | |||
102 | /** | ||
103 | * The timeout task | ||
104 | */ | ||
105 | struct GNUNET_SCHEDULER_Task *timeout_task; | ||
106 | |||
107 | /** | ||
108 | * The id of the operation which created this context | ||
109 | */ | ||
110 | uint64_t operation_id; | ||
111 | |||
112 | /** | ||
113 | * should the slave controller start the delegated controller? | ||
114 | */ | ||
115 | int is_subordinate; | ||
116 | |||
117 | /** | ||
118 | * The state of this context | ||
119 | */ | ||
120 | enum LCFContextState state; | ||
121 | |||
122 | /** | ||
123 | * The delegated host | ||
124 | */ | ||
125 | uint32_t delegated_host_id; | ||
126 | |||
127 | /** | ||
128 | * The slave host | ||
129 | */ | ||
130 | uint32_t slave_host_id; | ||
131 | }; | ||
132 | |||
133 | |||
134 | /** | ||
135 | * Notification context to be used to notify when connection to the neighbour's | ||
136 | * controller is opened | ||
137 | */ | ||
138 | struct NeighbourConnectNotification | ||
139 | { | ||
140 | /** | ||
141 | * DLL next for inclusion in neighbour's list of notification requests | ||
142 | */ | ||
143 | struct NeighbourConnectNotification *next; | ||
144 | |||
145 | /** | ||
146 | * DLL prev | ||
147 | */ | ||
148 | struct NeighbourConnectNotification *prev; | ||
149 | |||
150 | /** | ||
151 | * The neighbour | ||
152 | */ | ||
153 | struct Neighbour *n; | ||
154 | |||
155 | /** | ||
156 | * The notification callback to call when we are connect to neighbour | ||
157 | */ | ||
158 | GST_NeighbourConnectNotifyCallback cb; | ||
159 | |||
160 | /** | ||
161 | * The closure for the above callback | ||
162 | */ | ||
163 | void *cb_cls; | ||
164 | }; | ||
165 | |||
166 | |||
167 | /** | ||
168 | * A connected controller which is not our child | ||
169 | */ | ||
170 | struct Neighbour | ||
171 | { | ||
172 | /** | ||
173 | * The controller handle | ||
174 | */ | ||
175 | struct GNUNET_TESTBED_Controller *controller; | ||
176 | |||
177 | /** | ||
178 | * Operation handle for opening a lateral connection to another controller. | ||
179 | * Will be NULL if the slave controller is started by this controller | ||
180 | */ | ||
181 | struct GNUNET_TESTBED_Operation *conn_op; | ||
182 | |||
183 | /** | ||
184 | * DLL head for the list of notification requests | ||
185 | */ | ||
186 | struct NeighbourConnectNotification *nl_head; | ||
187 | |||
188 | /** | ||
189 | * DLL tail for the list of notification requests | ||
190 | */ | ||
191 | struct NeighbourConnectNotification *nl_tail; | ||
192 | |||
193 | /** | ||
194 | * Task id for the task to call notifications from the notification list | ||
195 | */ | ||
196 | struct GNUNET_SCHEDULER_Task *notify_task; | ||
197 | |||
198 | /** | ||
199 | * How many references are present currently to this neighbour's connection | ||
200 | */ | ||
201 | unsigned int reference_cnt; | ||
202 | |||
203 | /** | ||
204 | * Is the conn_op inactivated? | ||
205 | */ | ||
206 | unsigned int inactive; | ||
207 | |||
208 | /** | ||
209 | * The id of the host this controller is running on | ||
210 | */ | ||
211 | uint32_t host_id; | ||
212 | }; | ||
213 | |||
214 | |||
215 | /** | ||
216 | * The neighbour list | ||
217 | */ | ||
218 | static struct Neighbour **neighbour_list; | ||
219 | |||
220 | /** | ||
221 | * The size of the neighbour list | ||
222 | */ | ||
223 | static unsigned int neighbour_list_size; | ||
224 | |||
225 | |||
226 | /** | ||
227 | * Context information for establishing a link to neighbour (Used is | ||
228 | * GST_handle_link_controllers() | ||
229 | */ | ||
230 | struct NeighbourConnectCtxt | ||
231 | { | ||
232 | /** | ||
233 | * DLL next for inclusion in the corresponding context list | ||
234 | */ | ||
235 | struct NeighbourConnectCtxt *next; | ||
236 | |||
237 | /** | ||
238 | * DLL tail | ||
239 | */ | ||
240 | struct NeighbourConnectCtxt *prev; | ||
241 | |||
242 | /** | ||
243 | * The neighbour to whom connection should be made | ||
244 | */ | ||
245 | struct Neighbour *n; | ||
246 | |||
247 | /** | ||
248 | * The client requesting the connection | ||
249 | */ | ||
250 | struct GNUNET_SERVICE_Client *client; | ||
251 | |||
252 | /** | ||
253 | * Task to be run upon timeout | ||
254 | */ | ||
255 | struct GNUNET_SCHEDULER_Task *timeout_task; | ||
256 | |||
257 | /** | ||
258 | * The notification handle associated with the neighbour's connection request | ||
259 | */ | ||
260 | struct NeighbourConnectNotification *nh; | ||
261 | |||
262 | /** | ||
263 | * The id of the link-controllers operation responsible for creating this | ||
264 | * context | ||
265 | */ | ||
266 | uint64_t op_id; | ||
267 | }; | ||
268 | |||
269 | /** | ||
270 | * DLL head for the list of neighbour connect contexts | ||
271 | */ | ||
272 | struct NeighbourConnectCtxt *ncc_head; | ||
273 | |||
274 | /** | ||
275 | * DLL tail for the list of neighbour connect contexts | ||
276 | */ | ||
277 | struct NeighbourConnectCtxt *ncc_tail; | ||
278 | |||
279 | /** | ||
280 | * A list of directly linked neighbours | ||
281 | */ | ||
282 | struct Slave **GST_slave_list; | ||
283 | |||
284 | /** | ||
285 | * The size of directly linked neighbours list | ||
286 | */ | ||
287 | unsigned int GST_slave_list_size; | ||
288 | |||
289 | /** | ||
290 | * A list of routes | ||
291 | */ | ||
292 | static struct Route **route_list; | ||
293 | |||
294 | /** | ||
295 | * The LCF queue | ||
296 | */ | ||
297 | static struct LCFContext *lcf_head; | ||
298 | |||
299 | /** | ||
300 | * The tail for the LCF queue | ||
301 | */ | ||
302 | static struct LCFContext *lcf_tail; | ||
303 | |||
304 | /** | ||
305 | * The lcf_task handle | ||
306 | */ | ||
307 | static struct GNUNET_SCHEDULER_Task *lcf_proc_task_id; | ||
308 | |||
309 | /** | ||
310 | * The size of the route list | ||
311 | */ | ||
312 | static unsigned int route_list_size; | ||
313 | |||
314 | |||
315 | /** | ||
316 | * Adds a slave to the slave array | ||
317 | * | ||
318 | * @param slave the slave controller to add | ||
319 | */ | ||
320 | static void | ||
321 | slave_list_add (struct Slave *slave) | ||
322 | { | ||
323 | if (slave->host_id >= GST_slave_list_size) | ||
324 | GST_array_grow_large_enough (GST_slave_list, | ||
325 | GST_slave_list_size, | ||
326 | slave->host_id); | ||
327 | GNUNET_assert (NULL == GST_slave_list[slave->host_id]); | ||
328 | GST_slave_list[slave->host_id] = slave; | ||
329 | } | ||
330 | |||
331 | |||
332 | /** | ||
333 | * Clean up all forwarded operation overlay context matching the | ||
334 | * client given in @a cls. | ||
335 | * | ||
336 | * @param cls a `struct GNUNET_SERVICE_Client *` to match | ||
337 | * @param key unused | ||
338 | * @param value the `struct RegisteredHostContext` to search for @a cls | ||
339 | * @return #GNUNET_OK (continue iterating) | ||
340 | */ | ||
341 | static int | ||
342 | drop_client_entries (void *cls, | ||
343 | const struct GNUNET_HashCode *key, | ||
344 | void *value) | ||
345 | { | ||
346 | struct GNUNET_SERVICE_Client *client = cls; | ||
347 | struct RegisteredHostContext *rhc = value; | ||
348 | struct ForwardedOverlayConnectContext *focc; | ||
349 | struct ForwardedOverlayConnectContext *foccn; | ||
350 | |||
351 | for (focc = rhc->focc_dll_head; NULL != focc; focc = foccn) | ||
352 | { | ||
353 | foccn = focc->next; | ||
354 | if (focc->client == client) | ||
355 | GST_cleanup_focc (focc); | ||
356 | } | ||
357 | return GNUNET_OK; | ||
358 | } | ||
359 | |||
360 | |||
361 | /** | ||
362 | * Adds a route to the route list | ||
363 | * | ||
364 | * @param route the route to add | ||
365 | */ | ||
366 | static void | ||
367 | route_list_add (struct Route *route) | ||
368 | { | ||
369 | if (route->dest >= route_list_size) | ||
370 | GST_array_grow_large_enough (route_list, route_list_size, route->dest); | ||
371 | GNUNET_assert (NULL == route_list[route->dest]); | ||
372 | route_list[route->dest] = route; | ||
373 | } | ||
374 | |||
375 | |||
376 | /** | ||
377 | * Add a neighbour to the neighbour list. Grows the neighbour list | ||
378 | * automatically. | ||
379 | * | ||
380 | * @param n the neighbour to add | ||
381 | */ | ||
382 | static void | ||
383 | neighbour_list_add (struct Neighbour *n) | ||
384 | { | ||
385 | if (n->host_id >= neighbour_list_size) | ||
386 | GST_array_grow_large_enough (neighbour_list, neighbour_list_size, | ||
387 | n->host_id); | ||
388 | GNUNET_assert (NULL == neighbour_list[n->host_id]); | ||
389 | neighbour_list[n->host_id] = n; | ||
390 | } | ||
391 | |||
392 | |||
393 | /** | ||
394 | * Cleans up the route list | ||
395 | */ | ||
396 | void | ||
397 | GST_route_list_clear () | ||
398 | { | ||
399 | unsigned int id; | ||
400 | |||
401 | for (id = 0; id < route_list_size; id++) | ||
402 | if (NULL != route_list[id]) | ||
403 | GNUNET_free (route_list[id]); | ||
404 | GNUNET_free (route_list); | ||
405 | route_list = NULL; | ||
406 | } | ||
407 | |||
408 | |||
409 | /** | ||
410 | * Iterator for freeing hash map entries in a slave's reghost_map | ||
411 | * | ||
412 | * @param cls handle to the slave | ||
413 | * @param key current key code | ||
414 | * @param value value in the hash map | ||
415 | * @return #GNUNET_YES if we should continue to iterate, | ||
416 | * #GNUNET_NO if not. | ||
417 | */ | ||
418 | static int | ||
419 | reghost_free_iterator (void *cls, | ||
420 | const struct GNUNET_HashCode *key, | ||
421 | void *value) | ||
422 | { | ||
423 | struct Slave *slave = cls; | ||
424 | struct RegisteredHostContext *rhc = value; | ||
425 | struct ForwardedOverlayConnectContext *focc; | ||
426 | |||
427 | GNUNET_assert (GNUNET_YES == | ||
428 | GNUNET_CONTAINER_multihashmap_remove (slave->reghost_map, key, | ||
429 | value)); | ||
430 | while (NULL != (focc = rhc->focc_dll_head)) | ||
431 | GST_cleanup_focc (focc); | ||
432 | GNUNET_free (value); | ||
433 | return GNUNET_YES; | ||
434 | } | ||
435 | |||
436 | |||
437 | /** | ||
438 | * Kill a #Slave object | ||
439 | * | ||
440 | * @param slave the #Slave object | ||
441 | */ | ||
442 | static void | ||
443 | kill_slave (struct Slave *slave) | ||
444 | { | ||
445 | struct HostRegistration *hr_entry; | ||
446 | |||
447 | while (NULL != (hr_entry = slave->hr_dll_head)) | ||
448 | { | ||
449 | GNUNET_CONTAINER_DLL_remove (slave->hr_dll_head, slave->hr_dll_tail, | ||
450 | hr_entry); | ||
451 | GNUNET_free (hr_entry); | ||
452 | } | ||
453 | if (NULL != slave->rhandle) | ||
454 | GNUNET_TESTBED_cancel_registration (slave->rhandle); | ||
455 | GNUNET_assert (GNUNET_SYSERR != | ||
456 | GNUNET_CONTAINER_multihashmap_iterate (slave->reghost_map, | ||
457 | reghost_free_iterator, | ||
458 | slave)); | ||
459 | GNUNET_CONTAINER_multihashmap_destroy (slave->reghost_map); | ||
460 | if (NULL != slave->controller) | ||
461 | GNUNET_TESTBED_controller_disconnect (slave->controller); | ||
462 | if (NULL != slave->controller_proc) | ||
463 | { | ||
464 | LOG_DEBUG ("Stopping a slave\n"); | ||
465 | GNUNET_TESTBED_controller_kill_ (slave->controller_proc); | ||
466 | } | ||
467 | } | ||
468 | |||
469 | |||
470 | /** | ||
471 | * Destroy a #Slave object | ||
472 | * | ||
473 | * @param slave the #Slave object | ||
474 | */ | ||
475 | static void | ||
476 | destroy_slave (struct Slave *slave) | ||
477 | { | ||
478 | if (NULL != slave->controller_proc) | ||
479 | { | ||
480 | GNUNET_TESTBED_controller_destroy_ (slave->controller_proc); | ||
481 | LOG_DEBUG ("Slave stopped\n"); | ||
482 | } | ||
483 | GST_slave_list[slave->host_id] = NULL; | ||
484 | GNUNET_free (slave); | ||
485 | } | ||
486 | |||
487 | |||
488 | /** | ||
489 | * Cleans up the slave list | ||
490 | */ | ||
491 | void | ||
492 | GST_slave_list_clear () | ||
493 | { | ||
494 | struct Slave *slave; | ||
495 | unsigned int id; | ||
496 | |||
497 | for (id = 0; id < GST_slave_list_size; id++) | ||
498 | { | ||
499 | slave = GST_slave_list[id]; | ||
500 | if (NULL == slave) | ||
501 | continue; | ||
502 | kill_slave (slave); | ||
503 | } | ||
504 | for (id = 0; id < GST_slave_list_size; id++) | ||
505 | { | ||
506 | slave = GST_slave_list[id]; | ||
507 | if (NULL == slave) | ||
508 | continue; | ||
509 | destroy_slave (slave); | ||
510 | } | ||
511 | GNUNET_free (GST_slave_list); | ||
512 | GST_slave_list = NULL; | ||
513 | } | ||
514 | |||
515 | |||
516 | /** | ||
517 | * Finds the route with directly connected host as destination through which | ||
518 | * the destination host can be reached | ||
519 | * | ||
520 | * @param host_id the id of the destination host | ||
521 | * @return the route with directly connected destination host; NULL if no route | ||
522 | * is found | ||
523 | */ | ||
524 | struct Route * | ||
525 | GST_find_dest_route (uint32_t host_id) | ||
526 | { | ||
527 | struct Route *route; | ||
528 | |||
529 | if (route_list_size <= host_id) | ||
530 | return NULL; | ||
531 | while (NULL != (route = route_list[host_id])) | ||
532 | { | ||
533 | if (route->thru == GST_context->host_id) | ||
534 | break; | ||
535 | host_id = route->thru; | ||
536 | } | ||
537 | return route; | ||
538 | } | ||
539 | |||
540 | |||
541 | /** | ||
542 | * Function to send a failure response for controller link operation | ||
543 | * | ||
544 | * @param client the client to send the message to | ||
545 | * @param operation_id the operation ID of the controller link request | ||
546 | * @param cfg the configuration with which the delegated controller is started. | ||
547 | * Can be NULL if the delegated controller is not started but just | ||
548 | * linked to. | ||
549 | * @param emsg set to an error message explaining why the controller link | ||
550 | * failed. Setting this to NULL signifies success. !This should be | ||
551 | * NULL if cfg is set! | ||
552 | */ | ||
553 | static void | ||
554 | send_controller_link_response (struct GNUNET_SERVICE_Client *client, | ||
555 | uint64_t operation_id, | ||
556 | const struct GNUNET_CONFIGURATION_Handle *cfg, | ||
557 | const char *emsg) | ||
558 | { | ||
559 | struct GNUNET_MQ_Envelope *env; | ||
560 | struct GNUNET_TESTBED_ControllerLinkResponse *msg; | ||
561 | char *xconfig; | ||
562 | size_t config_size; | ||
563 | size_t xconfig_size; | ||
564 | uint16_t msize; | ||
565 | |||
566 | GNUNET_assert ((NULL == cfg) || (NULL == emsg)); | ||
567 | xconfig = NULL; | ||
568 | xconfig_size = 0; | ||
569 | config_size = 0; | ||
570 | msize = 0; | ||
571 | if (NULL != cfg) | ||
572 | { | ||
573 | xconfig = GNUNET_TESTBED_compress_cfg_ (cfg, | ||
574 | &config_size, | ||
575 | &xconfig_size); | ||
576 | msize += xconfig_size; | ||
577 | } | ||
578 | if (NULL != emsg) | ||
579 | msize += strlen (emsg); | ||
580 | env = GNUNET_MQ_msg_extra (msg, | ||
581 | msize, | ||
582 | GNUNET_MESSAGE_TYPE_TESTBED_LINK_CONTROLLERS_RESULT); | ||
583 | if (NULL == emsg) | ||
584 | msg->success = htons (GNUNET_YES); | ||
585 | msg->operation_id = GNUNET_htonll (operation_id); | ||
586 | msg->config_size = htons ((uint16_t) config_size); | ||
587 | if (NULL != xconfig) | ||
588 | { | ||
589 | GNUNET_memcpy (&msg[1], | ||
590 | xconfig, | ||
591 | xconfig_size); | ||
592 | GNUNET_free (xconfig); | ||
593 | } | ||
594 | if (NULL != emsg) | ||
595 | GNUNET_memcpy (&msg[1], | ||
596 | emsg, | ||
597 | strlen (emsg)); | ||
598 | GNUNET_MQ_send (GNUNET_SERVICE_client_get_mq (client), | ||
599 | env); | ||
600 | } | ||
601 | |||
602 | |||
603 | /** | ||
604 | * The Link Controller forwarding task | ||
605 | * | ||
606 | * @param cls the LCFContext | ||
607 | */ | ||
608 | static void | ||
609 | lcf_proc_task (void *cls); | ||
610 | |||
611 | |||
612 | /** | ||
613 | * Completion callback for host registrations while forwarding Link Controller messages | ||
614 | * | ||
615 | * @param cls the LCFContext | ||
616 | * @param emsg the error message; NULL if host registration is successful | ||
617 | */ | ||
618 | static void | ||
619 | lcf_proc_cc (void *cls, | ||
620 | const char *emsg) | ||
621 | { | ||
622 | struct LCFContext *lcf = cls; | ||
623 | |||
624 | GNUNET_assert (NULL == lcf_proc_task_id); | ||
625 | switch (lcf->state) | ||
626 | { | ||
627 | case INIT: | ||
628 | if (NULL != emsg) | ||
629 | goto registration_error; | ||
630 | lcf->state = DELEGATED_HOST_REGISTERED; | ||
631 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf); | ||
632 | break; | ||
633 | |||
634 | case DELEGATED_HOST_REGISTERED: | ||
635 | if (NULL != emsg) | ||
636 | goto registration_error; | ||
637 | lcf->state = SLAVE_HOST_REGISTERED; | ||
638 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf); | ||
639 | break; | ||
640 | |||
641 | default: | ||
642 | GNUNET_assert (0); /* Shouldn't reach here */ | ||
643 | } | ||
644 | return; | ||
645 | |||
646 | registration_error: | ||
647 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
648 | "Host registration failed with message: %s\n", | ||
649 | emsg); | ||
650 | lcf->state = FINISHED; | ||
651 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, | ||
652 | lcf); | ||
653 | } | ||
654 | |||
655 | |||
656 | /** | ||
657 | * The Link Controller forwarding task | ||
658 | * | ||
659 | * @param cls the LCFContext | ||
660 | */ | ||
661 | static void | ||
662 | lcf_proc_task (void *cls); | ||
663 | |||
664 | |||
665 | /** | ||
666 | * Task to free resources when forwarded link controllers has been timedout | ||
667 | * | ||
668 | * @param cls the LCFContext | ||
669 | */ | ||
670 | static void | ||
671 | lcf_forwarded_operation_timeout (void *cls) | ||
672 | { | ||
673 | struct LCFContext *lcf = cls; | ||
674 | |||
675 | lcf->timeout_task = NULL; | ||
676 | // GST_forwarded_operation_timeout (lcf->fopc, tc); | ||
677 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
678 | "A forwarded controller link operation has timed out\n"); | ||
679 | send_controller_link_response (lcf->client, | ||
680 | lcf->operation_id, | ||
681 | NULL, | ||
682 | "A forwarded controller link operation has timed out\n"); | ||
683 | GNUNET_assert (NULL == lcf_proc_task_id); | ||
684 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, | ||
685 | lcf); | ||
686 | } | ||
687 | |||
688 | |||
689 | /** | ||
690 | * The Link Controller forwarding task | ||
691 | * | ||
692 | * @param cls the LCFContext | ||
693 | */ | ||
694 | static void | ||
695 | lcf_proc_task (void *cls) | ||
696 | { | ||
697 | struct LCFContext *lcf = cls; | ||
698 | |||
699 | lcf_proc_task_id = NULL; | ||
700 | switch (lcf->state) | ||
701 | { | ||
702 | case INIT: | ||
703 | if (GNUNET_NO == | ||
704 | GNUNET_TESTBED_is_host_registered_ (GST_host_list | ||
705 | [lcf->delegated_host_id], | ||
706 | lcf->gateway->controller)) | ||
707 | { | ||
708 | GST_queue_host_registration (lcf->gateway, lcf_proc_cc, lcf, | ||
709 | GST_host_list[lcf->delegated_host_id]); | ||
710 | } | ||
711 | else | ||
712 | { | ||
713 | lcf->state = DELEGATED_HOST_REGISTERED; | ||
714 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf); | ||
715 | } | ||
716 | break; | ||
717 | |||
718 | case DELEGATED_HOST_REGISTERED: | ||
719 | if (GNUNET_NO == | ||
720 | GNUNET_TESTBED_is_host_registered_ (GST_host_list[lcf->slave_host_id], | ||
721 | lcf->gateway->controller)) | ||
722 | { | ||
723 | GST_queue_host_registration (lcf->gateway, lcf_proc_cc, lcf, | ||
724 | GST_host_list[lcf->slave_host_id]); | ||
725 | } | ||
726 | else | ||
727 | { | ||
728 | lcf->state = SLAVE_HOST_REGISTERED; | ||
729 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf); | ||
730 | } | ||
731 | break; | ||
732 | |||
733 | case SLAVE_HOST_REGISTERED: | ||
734 | lcf->op = GNUNET_TESTBED_controller_link (lcf, | ||
735 | lcf->gateway->controller, | ||
736 | GST_host_list[lcf-> | ||
737 | delegated_host_id], | ||
738 | GST_host_list[lcf->slave_host_id], | ||
739 | lcf->is_subordinate); | ||
740 | lcf->timeout_task = | ||
741 | GNUNET_SCHEDULER_add_delayed (GST_timeout, | ||
742 | &lcf_forwarded_operation_timeout, | ||
743 | lcf); | ||
744 | lcf->state = FINISHED; | ||
745 | break; | ||
746 | |||
747 | case FINISHED: | ||
748 | if (NULL != lcf->op) | ||
749 | GNUNET_TESTBED_operation_done (lcf->op); | ||
750 | GNUNET_CONTAINER_DLL_remove (lcf_head, | ||
751 | lcf_tail, | ||
752 | lcf); | ||
753 | GNUNET_free (lcf); | ||
754 | if (NULL != lcf_head) | ||
755 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, | ||
756 | lcf_head); | ||
757 | } | ||
758 | } | ||
759 | |||
760 | |||
761 | /** | ||
762 | * Callback for event from slave controllers | ||
763 | * | ||
764 | * @param cls NULL | ||
765 | * @param event information about the event | ||
766 | */ | ||
767 | static void | ||
768 | slave_event_cb (void *cls, const struct GNUNET_TESTBED_EventInformation *event) | ||
769 | { | ||
770 | struct LCFContext *lcf; | ||
771 | |||
772 | /* We currently only get here when working on LCFContexts */ | ||
773 | GNUNET_assert (GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type); | ||
774 | lcf = event->op_cls; | ||
775 | GNUNET_assert (lcf->op == event->op); | ||
776 | GNUNET_TESTBED_operation_done (lcf->op); | ||
777 | lcf->op = NULL; | ||
778 | GNUNET_assert (FINISHED == lcf->state); | ||
779 | GNUNET_assert (NULL != lcf->timeout_task); | ||
780 | GNUNET_SCHEDULER_cancel (lcf->timeout_task); | ||
781 | if (NULL == event->details.operation_finished.emsg) | ||
782 | send_controller_link_response (lcf->client, lcf->operation_id, | ||
783 | GNUNET_TESTBED_host_get_cfg_ | ||
784 | (GST_host_list[lcf->delegated_host_id]), | ||
785 | NULL); | ||
786 | else | ||
787 | send_controller_link_response (lcf->client, lcf->operation_id, | ||
788 | NULL, | ||
789 | event->details.operation_finished.emsg); | ||
790 | GNUNET_assert (NULL == lcf_proc_task_id); | ||
791 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf); | ||
792 | return; | ||
793 | } | ||
794 | |||
795 | |||
796 | /** | ||
797 | * Callback to signal successful startup of the controller process | ||
798 | * | ||
799 | * @param cls the handle to the slave whose status is to be found here | ||
800 | * @param cfg the configuration with which the controller has been started; | ||
801 | * NULL if status is not #GNUNET_OK | ||
802 | * @param status #GNUNET_OK if the startup is successful; #GNUNET_SYSERR if not, | ||
803 | * GNUNET_TESTBED_controller_stop() shouldn't be called in this case | ||
804 | */ | ||
805 | static void | ||
806 | slave_status_cb (void *cls, | ||
807 | const struct GNUNET_CONFIGURATION_Handle *cfg, | ||
808 | int status) | ||
809 | { | ||
810 | struct Slave *slave = cls; | ||
811 | struct LinkControllersContext *lcc; | ||
812 | |||
813 | lcc = slave->lcc; | ||
814 | if (GNUNET_SYSERR == status) | ||
815 | { | ||
816 | slave->controller_proc = NULL; | ||
817 | /* Stop all link controller forwarding tasks since we shutdown here anyway | ||
818 | and as these tasks they depend on the operation queues which are created | ||
819 | through GNUNET_TESTBED_controller_connect() and in kill_slave() we call | ||
820 | the destructor function GNUNET_TESTBED_controller_disconnect() */ | ||
821 | GST_free_lcf (); | ||
822 | kill_slave (slave); | ||
823 | destroy_slave (slave); | ||
824 | slave = NULL; | ||
825 | LOG (GNUNET_ERROR_TYPE_WARNING, "Unexpected slave shutdown\n"); | ||
826 | GNUNET_SCHEDULER_shutdown (); /* We too shutdown */ | ||
827 | goto clean_lcc; | ||
828 | } | ||
829 | slave->controller = | ||
830 | GNUNET_TESTBED_controller_connect (GST_host_list[slave->host_id], | ||
831 | EVENT_MASK, &slave_event_cb, | ||
832 | slave); | ||
833 | if (NULL != slave->controller) | ||
834 | { | ||
835 | send_controller_link_response (lcc->client, lcc->operation_id, cfg, NULL); | ||
836 | } | ||
837 | else | ||
838 | { | ||
839 | send_controller_link_response (lcc->client, lcc->operation_id, NULL, | ||
840 | "Could not connect to delegated controller"); | ||
841 | kill_slave (slave); | ||
842 | destroy_slave (slave); | ||
843 | slave = NULL; | ||
844 | } | ||
845 | |||
846 | clean_lcc: | ||
847 | if (NULL != lcc) | ||
848 | { | ||
849 | if (NULL != lcc->client) | ||
850 | { | ||
851 | GNUNET_SERVICE_client_continue (lcc->client); | ||
852 | lcc->client = NULL; | ||
853 | } | ||
854 | GNUNET_free (lcc); | ||
855 | } | ||
856 | if (NULL != slave) | ||
857 | slave->lcc = NULL; | ||
858 | } | ||
859 | |||
860 | |||
861 | /** | ||
862 | * Trigger notification task if there are notification requests currently | ||
863 | * waiting in the given neighbour. Also activates the neighbour connect operation | ||
864 | * if it was previously inactivated so that the connection to the neighbour can | ||
865 | * be re-used | ||
866 | * | ||
867 | * @param n the neighbour | ||
868 | */ | ||
869 | static void | ||
870 | trigger_notifications (struct Neighbour *n); | ||
871 | |||
872 | |||
873 | /** | ||
874 | * Task to call the notification queued in the notifications list of the given | ||
875 | * neighbour | ||
876 | * | ||
877 | * @param cls the neighbour | ||
878 | */ | ||
879 | static void | ||
880 | neighbour_connect_notify_task (void *cls) | ||
881 | { | ||
882 | struct Neighbour *n = cls; | ||
883 | struct NeighbourConnectNotification *h; | ||
884 | |||
885 | GNUNET_assert (NULL != (h = n->nl_head)); | ||
886 | GNUNET_assert (NULL != n->notify_task); | ||
887 | n->notify_task = NULL; | ||
888 | GNUNET_assert (NULL != n->controller); | ||
889 | GNUNET_CONTAINER_DLL_remove (n->nl_head, n->nl_tail, h); | ||
890 | trigger_notifications (n); | ||
891 | h->cb (h->cb_cls, n->controller); | ||
892 | GNUNET_free (h); | ||
893 | } | ||
894 | |||
895 | |||
896 | /** | ||
897 | * Trigger notification task if there are notification requests currently | ||
898 | * waiting in the given neighbour. Also activates the neighbour connect operation | ||
899 | * if it was previously inactivated so that the connection to the neighbour can | ||
900 | * be re-used | ||
901 | * | ||
902 | * @param n the neighbour | ||
903 | */ | ||
904 | static void | ||
905 | trigger_notifications (struct Neighbour *n) | ||
906 | { | ||
907 | GNUNET_assert (NULL != n->conn_op); | ||
908 | if (NULL == n->nl_head) | ||
909 | return; | ||
910 | if (NULL == n->controller) | ||
911 | return; | ||
912 | if (NULL != n->notify_task) | ||
913 | return; | ||
914 | if (1 == n->inactive) | ||
915 | { | ||
916 | GNUNET_assert (0 == n->reference_cnt); | ||
917 | GNUNET_TESTBED_operation_activate_ (n->conn_op); | ||
918 | n->inactive = 0; | ||
919 | } | ||
920 | n->reference_cnt++; | ||
921 | n->notify_task = | ||
922 | GNUNET_SCHEDULER_add_now (&neighbour_connect_notify_task, n); | ||
923 | } | ||
924 | |||
925 | |||
926 | /** | ||
927 | * Callback to be called when the neighbour connect operation is started. The | ||
928 | * connection to the neighbour is opened here and any pending notifications are | ||
929 | * trigger. | ||
930 | * | ||
931 | * @param cls the neighbour | ||
932 | */ | ||
933 | static void | ||
934 | opstart_neighbour_conn (void *cls) | ||
935 | { | ||
936 | struct Neighbour *n = cls; | ||
937 | |||
938 | GNUNET_assert (NULL != n->conn_op); | ||
939 | GNUNET_assert (NULL == n->controller); | ||
940 | LOG_DEBUG ("Opening connection to controller on host %u\n", n->host_id); | ||
941 | n->controller = GNUNET_TESTBED_controller_connect (GST_host_list[n->host_id], | ||
942 | EVENT_MASK, | ||
943 | &slave_event_cb, | ||
944 | NULL); | ||
945 | trigger_notifications (n); | ||
946 | } | ||
947 | |||
948 | |||
949 | /** | ||
950 | * Callback to be called when the neighbour connect operation is released | ||
951 | * | ||
952 | * @param cls the neighbour | ||
953 | */ | ||
954 | static void | ||
955 | oprelease_neighbour_conn (void *cls) | ||
956 | { | ||
957 | struct Neighbour *n = cls; | ||
958 | |||
959 | GNUNET_assert (0 == n->reference_cnt); | ||
960 | GNUNET_assert (NULL == n->notify_task); | ||
961 | GNUNET_assert (NULL == n->nl_head); | ||
962 | if (NULL != n->controller) | ||
963 | { | ||
964 | LOG_DEBUG ("Closing connection to controller on host %u\n", n->host_id); | ||
965 | GNUNET_TESTBED_controller_disconnect (n->controller); | ||
966 | n->controller = NULL; | ||
967 | } | ||
968 | n->conn_op = NULL; | ||
969 | n->inactive = 0; | ||
970 | } | ||
971 | |||
972 | |||
973 | /** | ||
974 | * Try to open a connection to the given neighbour. If the connection is open | ||
975 | * already, then it is re-used. If not, the request is queued in the operation | ||
976 | * queues responsible for bounding the total number of file descriptors. The | ||
977 | * actual connection will happen when the operation queue marks the | ||
978 | * corresponding operation as active. | ||
979 | * | ||
980 | * @param n the neighbour to open a connection to | ||
981 | * @param cb the notification callback to call when the connection is opened | ||
982 | * @param cb_cls the closure for the above callback | ||
983 | */ | ||
984 | struct NeighbourConnectNotification * | ||
985 | GST_neighbour_get_connection (struct Neighbour *n, | ||
986 | GST_NeighbourConnectNotifyCallback cb, | ||
987 | void *cb_cls) | ||
988 | { | ||
989 | struct NeighbourConnectNotification *h; | ||
990 | |||
991 | GNUNET_assert (NULL != cb); | ||
992 | LOG_DEBUG ("Attempting to get connection to controller on host %u\n", | ||
993 | n->host_id); | ||
994 | h = GNUNET_new (struct NeighbourConnectNotification); | ||
995 | h->n = n; | ||
996 | h->cb = cb; | ||
997 | h->cb_cls = cb_cls; | ||
998 | GNUNET_CONTAINER_DLL_insert_tail (n->nl_head, n->nl_tail, h); | ||
999 | if (NULL == n->conn_op) | ||
1000 | { | ||
1001 | GNUNET_assert (NULL == n->controller); | ||
1002 | n->conn_op = GNUNET_TESTBED_operation_create_ (n, &opstart_neighbour_conn, | ||
1003 | &oprelease_neighbour_conn); | ||
1004 | GNUNET_TESTBED_operation_queue_insert_ (GST_opq_openfds, n->conn_op); | ||
1005 | GNUNET_TESTBED_operation_begin_wait_ (n->conn_op); | ||
1006 | return h; | ||
1007 | } | ||
1008 | trigger_notifications (n); | ||
1009 | return h; | ||
1010 | } | ||
1011 | |||
1012 | |||
1013 | /** | ||
1014 | * Cancel the request for opening a connection to the neighbour | ||
1015 | * | ||
1016 | * @param h the notification handle | ||
1017 | */ | ||
1018 | void | ||
1019 | GST_neighbour_get_connection_cancel (struct NeighbourConnectNotification *h) | ||
1020 | { | ||
1021 | struct Neighbour *n; | ||
1022 | int cleanup_task; | ||
1023 | |||
1024 | n = h->n; | ||
1025 | cleanup_task = (h == n->nl_head) ? GNUNET_YES : GNUNET_NO; | ||
1026 | GNUNET_CONTAINER_DLL_remove (n->nl_head, n->nl_tail, h); | ||
1027 | GNUNET_free (h); | ||
1028 | if (GNUNET_NO == cleanup_task) | ||
1029 | return; | ||
1030 | if (NULL == n->notify_task) | ||
1031 | return; | ||
1032 | GNUNET_assert (0 < n->reference_cnt); | ||
1033 | n->reference_cnt--; | ||
1034 | GNUNET_SCHEDULER_cancel (n->notify_task); | ||
1035 | n->notify_task = NULL; | ||
1036 | if (NULL == n->nl_head) | ||
1037 | { | ||
1038 | if ((0 == n->reference_cnt) && (0 == n->inactive)) | ||
1039 | { | ||
1040 | n->inactive = 1; | ||
1041 | GNUNET_TESTBED_operation_inactivate_ (n->conn_op); | ||
1042 | } | ||
1043 | return; | ||
1044 | } | ||
1045 | trigger_notifications (n); | ||
1046 | } | ||
1047 | |||
1048 | |||
1049 | /** | ||
1050 | * Release the connection to the neighbour. The actual connection will be | ||
1051 | * closed if connections to other neighbour are waiting (to maintain a bound on | ||
1052 | * the total number of connections that are open). | ||
1053 | * | ||
1054 | * @param n the neighbour whose connection can be closed | ||
1055 | */ | ||
1056 | void | ||
1057 | GST_neighbour_release_connection (struct Neighbour *n) | ||
1058 | { | ||
1059 | GNUNET_assert (0 == n->inactive); | ||
1060 | GNUNET_assert (0 < n->reference_cnt); | ||
1061 | n->reference_cnt--; | ||
1062 | if (0 == n->reference_cnt) | ||
1063 | { | ||
1064 | n->inactive = 1; | ||
1065 | GNUNET_TESTBED_operation_inactivate_ (n->conn_op); | ||
1066 | } | ||
1067 | } | ||
1068 | |||
1069 | |||
1070 | /** | ||
1071 | * Cleanup neighbour connect contexts | ||
1072 | * | ||
1073 | * @param ncc the neighbour connect context to cleanup | ||
1074 | */ | ||
1075 | static void | ||
1076 | cleanup_ncc (struct NeighbourConnectCtxt *ncc) | ||
1077 | { | ||
1078 | if (NULL != ncc->nh) | ||
1079 | GST_neighbour_get_connection_cancel (ncc->nh); | ||
1080 | if (NULL != ncc->timeout_task) | ||
1081 | GNUNET_SCHEDULER_cancel (ncc->timeout_task); | ||
1082 | GNUNET_CONTAINER_DLL_remove (ncc_head, | ||
1083 | ncc_tail, | ||
1084 | ncc); | ||
1085 | GNUNET_free (ncc); | ||
1086 | } | ||
1087 | |||
1088 | |||
1089 | /** | ||
1090 | * Cleans up the neighbour list | ||
1091 | */ | ||
1092 | void | ||
1093 | GST_neighbour_list_clean () | ||
1094 | { | ||
1095 | struct Neighbour *n; | ||
1096 | unsigned int id; | ||
1097 | |||
1098 | for (id = 0; id < neighbour_list_size; id++) | ||
1099 | { | ||
1100 | if (NULL == (n = neighbour_list[id])) | ||
1101 | continue; | ||
1102 | if (NULL != n->conn_op) | ||
1103 | GNUNET_TESTBED_operation_release_ (n->conn_op); | ||
1104 | GNUNET_free (n); | ||
1105 | neighbour_list[id] = NULL; | ||
1106 | } | ||
1107 | GNUNET_free (neighbour_list); | ||
1108 | } | ||
1109 | |||
1110 | |||
1111 | /** | ||
1112 | * Get a neighbour from the neighbour list | ||
1113 | * | ||
1114 | * @param id the index of the neighbour in the neighbour list | ||
1115 | * @return the Neighbour; NULL if the given index in invalid (index greater than | ||
1116 | * the list size or neighbour at that index is NULL) | ||
1117 | */ | ||
1118 | struct Neighbour * | ||
1119 | GST_get_neighbour (uint32_t id) | ||
1120 | { | ||
1121 | if (neighbour_list_size <= id) | ||
1122 | return NULL; | ||
1123 | return neighbour_list[id]; | ||
1124 | } | ||
1125 | |||
1126 | |||
1127 | /** | ||
1128 | * Function to cleanup the neighbour connect contexts | ||
1129 | */ | ||
1130 | void | ||
1131 | GST_free_nccq () | ||
1132 | { | ||
1133 | while (NULL != ncc_head) | ||
1134 | cleanup_ncc (ncc_head); | ||
1135 | } | ||
1136 | |||
1137 | |||
1138 | /** | ||
1139 | * Task to be run upon timeout while attempting to connect to the neighbour | ||
1140 | * | ||
1141 | * @param cls the NeighbourConnectCtxt created in GST_handle_link_controllers() | ||
1142 | */ | ||
1143 | static void | ||
1144 | timeout_neighbour_connect (void *cls) | ||
1145 | { | ||
1146 | struct NeighbourConnectCtxt *ncc = cls; | ||
1147 | |||
1148 | ncc->timeout_task = NULL; | ||
1149 | send_controller_link_response (ncc->client, | ||
1150 | ncc->op_id, | ||
1151 | NULL, | ||
1152 | "Could not connect to delegated controller"); | ||
1153 | cleanup_ncc (ncc); | ||
1154 | } | ||
1155 | |||
1156 | |||
1157 | /** | ||
1158 | * Callback called when a connection to the neighbour is made | ||
1159 | * | ||
1160 | * @param cls the NeighbourConnectCtxt created in GST_handle_link_controllers() | ||
1161 | * @param c the handle the neighbour's controller | ||
1162 | */ | ||
1163 | static void | ||
1164 | neighbour_connect_cb (void *cls, | ||
1165 | struct GNUNET_TESTBED_Controller *c) | ||
1166 | { | ||
1167 | struct NeighbourConnectCtxt *ncc = cls; | ||
1168 | |||
1169 | GNUNET_SCHEDULER_cancel (ncc->timeout_task); | ||
1170 | ncc->timeout_task = NULL; | ||
1171 | ncc->nh = NULL; | ||
1172 | GST_neighbour_release_connection (ncc->n); | ||
1173 | send_controller_link_response (ncc->client, | ||
1174 | ncc->op_id, | ||
1175 | NULL, | ||
1176 | NULL); | ||
1177 | cleanup_ncc (ncc); | ||
1178 | } | ||
1179 | |||
1180 | |||
1181 | /** | ||
1182 | * Function to create a neighbour and add it into the neighbour list | ||
1183 | * | ||
1184 | * @param host the host of the neighbour | ||
1185 | */ | ||
1186 | struct Neighbour * | ||
1187 | GST_create_neighbour (struct GNUNET_TESTBED_Host *host) | ||
1188 | { | ||
1189 | struct Neighbour *n; | ||
1190 | |||
1191 | n = GNUNET_new (struct Neighbour); | ||
1192 | n->host_id = GNUNET_TESTBED_host_get_id_ (host); | ||
1193 | neighbour_list_add (n); /* just add; connect on-demand */ | ||
1194 | return n; | ||
1195 | } | ||
1196 | |||
1197 | |||
1198 | /** | ||
1199 | * Message handler for #GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message | ||
1200 | * | ||
1201 | * @param cls identification of the client | ||
1202 | * @param msg the actual message | ||
1203 | */ | ||
1204 | void | ||
1205 | handle_link_controllers (void *cls, | ||
1206 | const struct GNUNET_TESTBED_ControllerLinkRequest *msg) | ||
1207 | { | ||
1208 | struct GNUNET_SERVICE_Client *client = cls; | ||
1209 | struct LCFContext *lcf; | ||
1210 | struct Route *route; | ||
1211 | struct Route *new_route; | ||
1212 | uint64_t op_id; | ||
1213 | uint32_t delegated_host_id; | ||
1214 | uint32_t slave_host_id; | ||
1215 | |||
1216 | if (NULL == GST_context) | ||
1217 | { | ||
1218 | GNUNET_break (0); | ||
1219 | GNUNET_SERVICE_client_drop (client); | ||
1220 | return; | ||
1221 | } | ||
1222 | delegated_host_id = ntohl (msg->delegated_host_id); | ||
1223 | if (delegated_host_id == GST_context->host_id) | ||
1224 | { | ||
1225 | GNUNET_break (0); | ||
1226 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1227 | "Trying to link ourselves\n"); | ||
1228 | GNUNET_SERVICE_client_drop (client); | ||
1229 | return; | ||
1230 | } | ||
1231 | if ((delegated_host_id >= GST_host_list_size) || | ||
1232 | (NULL == GST_host_list[delegated_host_id])) | ||
1233 | { | ||
1234 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1235 | "Delegated host %u not registered with us\n", | ||
1236 | delegated_host_id); | ||
1237 | GNUNET_SERVICE_client_drop (client); | ||
1238 | return; | ||
1239 | } | ||
1240 | slave_host_id = ntohl (msg->slave_host_id); | ||
1241 | if ((slave_host_id >= GST_host_list_size) || | ||
1242 | (NULL == GST_host_list[slave_host_id])) | ||
1243 | { | ||
1244 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1245 | "Slave host %u not registered with us\n", | ||
1246 | slave_host_id); | ||
1247 | GNUNET_SERVICE_client_drop (client); | ||
1248 | return; | ||
1249 | } | ||
1250 | if (slave_host_id == delegated_host_id) | ||
1251 | { | ||
1252 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1253 | "Slave and delegated host are same\n"); | ||
1254 | GNUNET_SERVICE_client_drop (client); | ||
1255 | return; | ||
1256 | } | ||
1257 | op_id = GNUNET_ntohll (msg->operation_id); | ||
1258 | if (slave_host_id == GST_context->host_id) /* Link from us */ | ||
1259 | { | ||
1260 | struct Slave *slave; | ||
1261 | struct LinkControllersContext *lcc; | ||
1262 | |||
1263 | if (1 != msg->is_subordinate) | ||
1264 | { | ||
1265 | struct Neighbour *n; | ||
1266 | struct NeighbourConnectCtxt *ncc; | ||
1267 | |||
1268 | if ((delegated_host_id < neighbour_list_size) && | ||
1269 | (NULL != neighbour_list[delegated_host_id])) | ||
1270 | { | ||
1271 | GNUNET_break (0); | ||
1272 | GNUNET_SERVICE_client_drop (client); | ||
1273 | return; | ||
1274 | } | ||
1275 | LOG_DEBUG ("Received request to establish a link to host %u\n", | ||
1276 | delegated_host_id); | ||
1277 | n = GST_create_neighbour (GST_host_list[delegated_host_id]); | ||
1278 | ncc = GNUNET_new (struct NeighbourConnectCtxt); | ||
1279 | ncc->n = n; | ||
1280 | ncc->op_id = op_id; | ||
1281 | ncc->client = client; | ||
1282 | ncc->nh = GST_neighbour_get_connection (n, | ||
1283 | &neighbour_connect_cb, | ||
1284 | ncc); | ||
1285 | ncc->timeout_task | ||
1286 | = GNUNET_SCHEDULER_add_delayed (GST_timeout, | ||
1287 | &timeout_neighbour_connect, | ||
1288 | ncc); | ||
1289 | GNUNET_CONTAINER_DLL_insert_tail (ncc_head, | ||
1290 | ncc_tail, | ||
1291 | ncc); | ||
1292 | GNUNET_SERVICE_client_continue (client); | ||
1293 | return; | ||
1294 | } | ||
1295 | if ((delegated_host_id < GST_slave_list_size) && | ||
1296 | (NULL != GST_slave_list[delegated_host_id])) | ||
1297 | { | ||
1298 | GNUNET_break (0); | ||
1299 | GNUNET_SERVICE_client_drop (client); | ||
1300 | return; | ||
1301 | } | ||
1302 | LOG_DEBUG ("Received request to start and establish a link to host %u\n", | ||
1303 | delegated_host_id); | ||
1304 | slave = GNUNET_new (struct Slave); | ||
1305 | slave->host_id = delegated_host_id; | ||
1306 | slave->reghost_map = GNUNET_CONTAINER_multihashmap_create (100, | ||
1307 | GNUNET_NO); | ||
1308 | slave_list_add (slave); | ||
1309 | lcc = GNUNET_new (struct LinkControllersContext); | ||
1310 | lcc->operation_id = op_id; | ||
1311 | lcc->client = client; | ||
1312 | slave->lcc = lcc; | ||
1313 | slave->controller_proc | ||
1314 | = GNUNET_TESTBED_controller_start (GST_context->master_ip, | ||
1315 | GST_host_list[slave->host_id], | ||
1316 | &slave_status_cb, | ||
1317 | slave); | ||
1318 | new_route = GNUNET_new (struct Route); | ||
1319 | new_route->dest = delegated_host_id; | ||
1320 | new_route->thru = GST_context->host_id; | ||
1321 | route_list_add (new_route); | ||
1322 | return; | ||
1323 | } | ||
1324 | |||
1325 | /* Route the request */ | ||
1326 | if (slave_host_id >= route_list_size) | ||
1327 | { | ||
1328 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1329 | "No route towards slave host"); | ||
1330 | GNUNET_SERVICE_client_drop (client); | ||
1331 | return; | ||
1332 | } | ||
1333 | lcf = GNUNET_new (struct LCFContext); | ||
1334 | lcf->delegated_host_id = delegated_host_id; | ||
1335 | lcf->slave_host_id = slave_host_id; | ||
1336 | route = GST_find_dest_route (slave_host_id); | ||
1337 | GNUNET_assert (NULL != route); /* because we add routes carefully */ | ||
1338 | GNUNET_assert (route->dest < GST_slave_list_size); | ||
1339 | GNUNET_assert (NULL != GST_slave_list[route->dest]); | ||
1340 | lcf->is_subordinate = msg->is_subordinate; | ||
1341 | lcf->state = INIT; | ||
1342 | lcf->operation_id = op_id; | ||
1343 | lcf->gateway = GST_slave_list[route->dest]; | ||
1344 | lcf->client = client; | ||
1345 | if (NULL == lcf_head) | ||
1346 | { | ||
1347 | GNUNET_assert (NULL == lcf_proc_task_id); | ||
1348 | GNUNET_CONTAINER_DLL_insert_tail (lcf_head, | ||
1349 | lcf_tail, | ||
1350 | lcf); | ||
1351 | lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, | ||
1352 | lcf); | ||
1353 | } | ||
1354 | else | ||
1355 | { | ||
1356 | GNUNET_CONTAINER_DLL_insert_tail (lcf_head, | ||
1357 | lcf_tail, | ||
1358 | lcf); | ||
1359 | } | ||
1360 | /* FIXME: Adding a new route should happen after the controllers are linked | ||
1361 | * successfully */ | ||
1362 | if (1 != msg->is_subordinate) | ||
1363 | { | ||
1364 | GNUNET_SERVICE_client_continue (client); | ||
1365 | return; | ||
1366 | } | ||
1367 | if ((delegated_host_id < route_list_size) && | ||
1368 | (NULL != route_list[delegated_host_id])) | ||
1369 | { | ||
1370 | GNUNET_break_op (0); /* Are you trying to link delegated host twice | ||
1371 | * with is subordinate flag set to GNUNET_YES? */ | ||
1372 | GNUNET_SERVICE_client_drop (client); | ||
1373 | return; | ||
1374 | } | ||
1375 | new_route = GNUNET_new (struct Route); | ||
1376 | new_route->dest = delegated_host_id; | ||
1377 | new_route->thru = route->dest; | ||
1378 | route_list_add (new_route); | ||
1379 | GNUNET_SERVICE_client_continue (client); | ||
1380 | } | ||
1381 | |||
1382 | |||
1383 | /** | ||
1384 | * Clean up @a client handle if we stored any via #handle_link_controllers(), | ||
1385 | * the given client disconnected. | ||
1386 | * | ||
1387 | * @param client the client that is history | ||
1388 | */ | ||
1389 | void | ||
1390 | GST_link_notify_disconnect (struct GNUNET_SERVICE_Client *client) | ||
1391 | { | ||
1392 | struct NeighbourConnectCtxt *ncc; | ||
1393 | struct NeighbourConnectCtxt *nccn; | ||
1394 | struct LCFContext *lcf; | ||
1395 | struct LCFContext *lcfn; | ||
1396 | |||
1397 | for (ncc = ncc_head; NULL != ncc; ncc = nccn) | ||
1398 | { | ||
1399 | nccn = ncc->next; | ||
1400 | if (ncc->client == client) | ||
1401 | cleanup_ncc (ncc); | ||
1402 | } | ||
1403 | for (unsigned int i = 0; i < GST_slave_list_size; i++) | ||
1404 | { | ||
1405 | struct Slave *slave = GST_slave_list[i]; | ||
1406 | struct LinkControllersContext *lcc; | ||
1407 | |||
1408 | if (NULL == slave) | ||
1409 | continue; | ||
1410 | GNUNET_CONTAINER_multihashmap_iterate (slave->reghost_map, | ||
1411 | &drop_client_entries, | ||
1412 | client); | ||
1413 | lcc = slave->lcc; | ||
1414 | if (NULL == lcc) | ||
1415 | continue; | ||
1416 | if (lcc->client == client) | ||
1417 | { | ||
1418 | slave->lcc = NULL; | ||
1419 | GNUNET_free (lcc); | ||
1420 | } | ||
1421 | } | ||
1422 | for (lcf = lcf_head; NULL != lcf; lcf = lcfn) | ||
1423 | { | ||
1424 | lcfn = lcf->next; | ||
1425 | if ((NULL != lcf) && | ||
1426 | (client == lcf->client)) | ||
1427 | { | ||
1428 | if (NULL != lcf->op) | ||
1429 | GNUNET_TESTBED_operation_done (lcf->op); | ||
1430 | GNUNET_CONTAINER_DLL_remove (lcf_head, | ||
1431 | lcf_tail, | ||
1432 | lcf); | ||
1433 | GNUNET_free (lcf); | ||
1434 | } | ||
1435 | } | ||
1436 | } | ||
1437 | |||
1438 | |||
1439 | /** | ||
1440 | * Cleans up the queue used for forwarding link controllers requests | ||
1441 | */ | ||
1442 | void | ||
1443 | GST_free_lcf () | ||
1444 | { | ||
1445 | struct LCFContext *lcf; | ||
1446 | |||
1447 | if (NULL != lcf_head) | ||
1448 | { | ||
1449 | if (NULL != lcf_proc_task_id) | ||
1450 | { | ||
1451 | GNUNET_SCHEDULER_cancel (lcf_proc_task_id); | ||
1452 | lcf_proc_task_id = NULL; | ||
1453 | } | ||
1454 | } | ||
1455 | GNUNET_assert (NULL == lcf_proc_task_id); | ||
1456 | for (lcf = lcf_head; NULL != lcf; lcf = lcf_head) | ||
1457 | { | ||
1458 | if (NULL != lcf->op) | ||
1459 | GNUNET_TESTBED_operation_done (lcf->op); | ||
1460 | if (NULL != lcf->timeout_task) | ||
1461 | GNUNET_SCHEDULER_cancel (lcf->timeout_task); | ||
1462 | GNUNET_CONTAINER_DLL_remove (lcf_head, | ||
1463 | lcf_tail, | ||
1464 | lcf); | ||
1465 | GNUNET_free (lcf); | ||
1466 | } | ||
1467 | } | ||