GNUnet 0.21.0
core_api.c
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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2009-2016 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 */
26#include "platform.h"
27#include "gnunet_util_lib.h"
28#include "gnunet_constants.h"
29#include "gnunet_core_service.h"
30#include "core.h"
31
32#define LOG(kind, ...) GNUNET_log_from (kind, "core-api", __VA_ARGS__)
33
34
39{
44
49
55
61
66
70 uint16_t smr_id_gen;
71};
72
73
78{
83
87 void *cls;
88
93
98
103
108
113
119
124
129
134
138 unsigned int hcnt;
139
144};
145
146
153static void
155
156
162static void
163reconnect_task (void *cls)
164{
165 struct GNUNET_CORE_Handle *h = cls;
166
167 h->reconnect_task = NULL;
168 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to CORE service after delay\n");
169 reconnect (h);
170}
171
172
182static int
184 const struct GNUNET_PeerIdentity *key,
185 void *value)
186{
187 struct GNUNET_CORE_Handle *h = cls;
188 struct PeerRecord *pr = value;
189
190 GNUNET_assert (pr->h == h);
191 if (NULL != h->disconnects)
192 h->disconnects (h->cls, &pr->peer, pr->client_cls);
195 GNUNET_MQ_destroy (pr->mq);
196 GNUNET_assert (NULL == pr->mq);
197 if (NULL != pr->env)
198 {
200 pr->env = NULL;
201 }
202 GNUNET_free (pr);
203 return GNUNET_YES;
204}
205
206
213static void
215{
216 GNUNET_assert (NULL == h->reconnect_task);
217 if (NULL != h->mq)
218 {
220 h->mq = NULL;
221 }
222 GNUNET_assert (NULL == h->reconnect_task);
227 h);
229}
230
231
239static void
240handle_mq_error (void *cls, enum GNUNET_MQ_Error error)
241{
242 struct GNUNET_CORE_Handle *h = cls;
243
244 LOG (GNUNET_ERROR_TYPE_DEBUG, "MQ ERROR: %d\n", error);
246}
247
248
257static void
259 const struct GNUNET_MessageHeader *msg,
260 void *impl_state)
261{
262 struct PeerRecord *pr = impl_state;
263 struct GNUNET_CORE_Handle *h = pr->h;
264 struct SendMessageRequest *smr;
265 struct SendMessage *sm;
266 struct GNUNET_MQ_Envelope *env;
267 uint16_t msize;
269
270 if (NULL == h->mq)
271 {
272 /* We're currently reconnecting, pretend this worked */
274 return;
275 }
276 GNUNET_assert (NULL == pr->env);
277 /* extract options from envelope */
280
281 /* check message size for sanity */
282 msize = ntohs (msg->size);
283 if (msize >= GNUNET_MAX_MESSAGE_SIZE - sizeof(struct SendMessage))
284 {
285 GNUNET_break (0);
287 return;
288 }
289
290 /* ask core for transmission */
292 "Asking core for transmission of %u bytes to `%s'\n",
293 (unsigned int) msize,
294 GNUNET_i2s (&pr->peer));
296 smr->priority = htonl ((uint32_t) flags);
297 smr->peer = pr->peer;
298 smr->size = htons (msize);
299 smr->smr_id = htons (++pr->smr_id_gen);
301
302 /* prepare message with actual transmission data */
304 sm->priority = htonl ((uint32_t) flags);
305 sm->peer = pr->peer;
307 "Calling get_message with buffer of %u bytes\n",
308 (unsigned int) msize);
309}
310
311
319static void
320core_mq_destroy_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
321{
322 struct PeerRecord *pr = impl_state;
323
324 GNUNET_assert (mq == pr->mq);
325 pr->mq = NULL;
326}
327
328
336static void
337core_mq_cancel_impl (struct GNUNET_MQ_Handle *mq, void *impl_state)
338{
339 struct PeerRecord *pr = impl_state;
340
341 (void) mq;
342 GNUNET_assert (NULL != pr->env);
344 pr->env = NULL;
345}
346
347
356static void
358{
359 /* struct PeerRecord *pr = cls; */
360 (void) cls;
361 (void) error;
362 GNUNET_break_op (0);
363}
364
365
374static void
376 const struct GNUNET_PeerIdentity *peer)
377{
378 struct PeerRecord *pr;
379
380 pr = GNUNET_new (struct PeerRecord);
381 pr->peer = *peer;
382 pr->h = h;
385 h->peers,
386 &pr->peer,
387 pr,
392 pr,
393 h->handlers,
395 pr);
396 if (NULL != h->connects)
397 {
398 pr->client_cls = h->connects (h->cls, &pr->peer, pr->mq);
400 }
401}
402
403
412static void
413handle_init_reply (void *cls, const struct InitReplyMessage *m)
414{
415 struct GNUNET_CORE_Handle *h = cls;
417
418 GNUNET_break (0 == ntohl (m->reserved));
420 if (NULL != (init = h->init))
421 {
422 /* mark so we don't call init on reconnect */
423 h->init = NULL;
424 h->me = m->my_identity;
426 "Connected to core service of peer `%s'.\n",
427 GNUNET_i2s (&h->me));
428 h->have_init = GNUNET_YES;
429 init (h->cls, &h->me);
430 }
431 else
432 {
434 "Successfully reconnected to core service.\n");
435 if (GNUNET_NO == h->have_init)
436 {
437 h->me = m->my_identity;
438 h->have_init = GNUNET_YES;
439 }
440 else
441 {
442 GNUNET_break (0 == memcmp (&h->me,
443 &m->my_identity,
444 sizeof(struct GNUNET_PeerIdentity)));
445 }
446 }
447 /* fake 'connect to self' */
448 connect_peer (h, &h->me);
449}
450
451
459static void
461{
462 struct GNUNET_CORE_Handle *h = cls;
463 struct PeerRecord *pr;
464
466 "Received notification about connection from `%s'.\n",
467 GNUNET_i2s (&cnm->peer));
468 if (0 == memcmp (&h->me, &cnm->peer, sizeof(struct GNUNET_PeerIdentity)))
469 {
470 /* connect to self!? */
471 GNUNET_break (0);
472 return;
473 }
474 pr = GNUNET_CONTAINER_multipeermap_get (h->peers, &cnm->peer);
475 if (NULL != pr)
476 {
477 GNUNET_break (0);
479 return;
480 }
481 connect_peer (h, &cnm->peer);
482}
483
484
492static void
494{
495 struct GNUNET_CORE_Handle *h = cls;
496 struct PeerRecord *pr;
497
498 if (0 == memcmp (&h->me, &dnm->peer, sizeof(struct GNUNET_PeerIdentity)))
499 {
500 /* disconnect from self!? */
501 GNUNET_break (0);
502 return;
503 }
504 GNUNET_break (0 == ntohl (dnm->reserved));
506 "Received notification about disconnect from `%s'.\n",
507 GNUNET_i2s (&dnm->peer));
508 pr = GNUNET_CONTAINER_multipeermap_get (h->peers, &dnm->peer);
509 if (NULL == pr)
510 {
511 GNUNET_break (0);
513 return;
514 }
516}
517
518
526static int
527check_notify_inbound (void *cls, const struct NotifyTrafficMessage *ntm)
528{
529 uint16_t msize;
530 const struct GNUNET_MessageHeader *em;
531
532 (void) cls;
533 msize = ntohs (ntm->header.size) - sizeof(struct NotifyTrafficMessage);
534 if (msize < sizeof(struct GNUNET_MessageHeader))
535 {
536 GNUNET_break (0);
537 return GNUNET_SYSERR;
538 }
539 em = (const struct GNUNET_MessageHeader *) &ntm[1];
540 if (msize != ntohs (em->size))
541 {
542 GNUNET_break (0);
543 return GNUNET_SYSERR;
544 }
545 return GNUNET_OK;
546}
547
548
556static void
557handle_notify_inbound (void *cls, const struct NotifyTrafficMessage *ntm)
558{
559 struct GNUNET_CORE_Handle *h = cls;
560 const struct GNUNET_MessageHeader *em;
561 struct PeerRecord *pr;
562
564 "Received inbound message from `%s'.\n",
565 GNUNET_i2s (&ntm->peer));
566 em = (const struct GNUNET_MessageHeader *) &ntm[1];
567 pr = GNUNET_CONTAINER_multipeermap_get (h->peers, &ntm->peer);
568 if (NULL == pr)
569 {
570 GNUNET_break (0);
572 return;
573 }
575}
576
577
586static void
587handle_send_ready (void *cls, const struct SendMessageReady *smr)
588{
589 struct GNUNET_CORE_Handle *h = cls;
590 struct PeerRecord *pr;
591
592 pr = GNUNET_CONTAINER_multipeermap_get (h->peers, &smr->peer);
593 if (NULL == pr)
594 {
595 GNUNET_break (0);
597 return;
598 }
600 "Received notification about transmission readiness to `%s'.\n",
601 GNUNET_i2s (&smr->peer));
602 if (NULL == pr->env)
603 {
604 /* request must have been cancelled between the original request
605 * and the response from CORE, ignore CORE's readiness */
606 return;
607 }
608 if (ntohs (smr->smr_id) != pr->smr_id_gen)
609 {
610 /* READY message is for expired or cancelled message,
611 * ignore! (we should have already sent another request) */
612 return;
613 }
614
615 /* ok, all good, send message out! */
616 GNUNET_MQ_send (h->mq, pr->env);
617 pr->env = NULL;
619}
620
621
628static void
630{
632 { GNUNET_MQ_hd_fixed_size (init_reply,
634 struct InitReplyMessage,
635 h),
639 h),
643 h),
644 GNUNET_MQ_hd_var_size (notify_inbound,
647 h),
648 GNUNET_MQ_hd_fixed_size (send_ready,
650 struct SendMessageReady,
651 h),
653 struct InitMessage *init;
654 struct GNUNET_MQ_Envelope *env;
655 uint16_t *ts;
656
657 GNUNET_assert (NULL == h->mq);
659 if (NULL == h->mq)
660 {
662 return;
663 }
665 sizeof(uint16_t) * h->hcnt,
667 LOG (GNUNET_ERROR_TYPE_INFO, "(Re)connecting to CORE service\n");
668 init->options = htonl (0);
669 ts = (uint16_t *) &init[1];
670 for (unsigned int hpos = 0; hpos < h->hcnt; hpos++)
671 ts[hpos] = htons (h->handlers[hpos].type);
673}
674
675
690struct GNUNET_CORE_Handle *
692 void *cls,
697{
698 struct GNUNET_CORE_Handle *h;
699
701 h->cfg = cfg;
702 h->cls = cls;
703 h->init = init;
704 h->connects = connects;
705 h->disconnects = disconnects;
707 h->handlers = GNUNET_MQ_copy_handlers (handlers);
709 GNUNET_assert (h->hcnt <
710 (GNUNET_MAX_MESSAGE_SIZE - sizeof(struct InitMessage))
711 / sizeof(uint16_t));
712 LOG (GNUNET_ERROR_TYPE_DEBUG, "Connecting to CORE service\n");
713 reconnect (h);
714 if (NULL == h->mq)
715 {
717 return NULL;
718 }
719 return h;
720}
721
722
728void
730{
731 LOG (GNUNET_ERROR_TYPE_DEBUG, "Disconnecting from CORE service\n");
734 handle);
736 handle->peers = NULL;
737 if (NULL != handle->reconnect_task)
738 {
739 GNUNET_SCHEDULER_cancel (handle->reconnect_task);
740 handle->reconnect_task = NULL;
741 }
742 if (NULL != handle->mq)
743 {
745 handle->mq = NULL;
746 }
747 GNUNET_free (handle->handlers);
749}
750
751
759struct GNUNET_MQ_Handle *
761 const struct GNUNET_PeerIdentity *pid)
762{
763 struct PeerRecord *pr;
764
766 if (NULL == pr)
767 return NULL;
768 return pr->mq;
769}
770
771
772/* end of core_api.c */
struct GNUNET_MQ_MessageHandlers handlers[]
Definition: 003.c:1
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
void * connects(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Definition: 010.c:2
void disconnects(void *cls, const struct GNUNET_PeerIdentity *peer)
Definition: 011.c:2
common internal definitions for core service
static int disconnect_and_free_peer_entry(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Notify clients about disconnect and free the entry for connected peer.
Definition: core_api.c:183
static void handle_send_ready(void *cls, const struct SendMessageReady *smr)
Handle message received from CORE service notifying us that we are now allowed to send a message to a...
Definition: core_api.c:587
static void reconnect_later(struct GNUNET_CORE_Handle *h)
Close down any existing connection to the CORE service and try re-establishing it later.
Definition: core_api.c:214
static int check_notify_inbound(void *cls, const struct NotifyTrafficMessage *ntm)
Check that message received from CORE service is well-formed.
Definition: core_api.c:527
static void handle_connect_notify(void *cls, const struct ConnectNotifyMessage *cnm)
Handle connect message received from CORE service.
Definition: core_api.c:460
static void core_mq_send_impl(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *msg, void *impl_state)
Implement sending functionality of a message queue for us sending messages to a peer.
Definition: core_api.c:258
static void handle_disconnect_notify(void *cls, const struct DisconnectNotifyMessage *dnm)
Handle disconnect message received from CORE service.
Definition: core_api.c:493
static void reconnect(struct GNUNET_CORE_Handle *h)
Our current client connection went down.
Definition: core_api.c:629
static void handle_notify_inbound(void *cls, const struct NotifyTrafficMessage *ntm)
Handle inbound message received from CORE service.
Definition: core_api.c:557
static void handle_init_reply(void *cls, const struct InitReplyMessage *m)
Handle init reply message received from CORE service.
Definition: core_api.c:413
static void core_mq_cancel_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Implementation function that cancels the currently sent message.
Definition: core_api.c:337
#define LOG(kind,...)
Definition: core_api.c:32
static void core_mq_destroy_impl(struct GNUNET_MQ_Handle *mq, void *impl_state)
Handle destruction of a message queue.
Definition: core_api.c:320
static void connect_peer(struct GNUNET_CORE_Handle *h, const struct GNUNET_PeerIdentity *peer)
Add the given peer to the list of our connected peers and create the respective data structures and n...
Definition: core_api.c:375
static void handle_mq_error(void *cls, enum GNUNET_MQ_Error error)
Error handler for the message queue to the CORE service.
Definition: core_api.c:240
static void reconnect_task(void *cls)
Task schedule to try to re-connect to core.
Definition: core_api.c:163
static void core_mq_error_handler(void *cls, enum GNUNET_MQ_Error error)
We had an error processing a message we forwarded from a peer to the CORE service.
Definition: core_api.c:357
static struct GNUNET_ARM_MonitorHandle * m
Monitor connection with ARM.
Definition: gnunet-arm.c:104
static struct GNUNET_ARM_Handle * h
Connection with ARM.
Definition: gnunet-arm.c:99
static struct GNUNET_CONFIGURATION_Handle * cfg
Our configuration.
Definition: gnunet-arm.c:109
static char * init
Set to the name of a service to start.
Definition: gnunet-arm.c:74
static void disconnect_notify(void *cls, const struct GNUNET_PeerIdentity *peer, void *internal_cls)
Method called whenever a peer disconnects.
static void * connect_notify(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Method called whenever a peer connects.
struct GNUNET_HashCode key
The key used in the DHT.
static char * value
Value of the record to add/remove.
static struct GNUNET_PeerIdentity pid
Identity of the peer we transmit to / connect to.
static struct GNUNET_VPN_Handle * handle
Handle to vpn service.
Definition: gnunet-vpn.c:35
Core service; the main API for encrypted P2P communications.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message,...
struct GNUNET_MQ_Handle * GNUNET_CLIENT_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *service_name, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *error_handler_cls)
Create a message queue to connect to a GNUnet service.
Definition: client.c:1057
void(* GNUNET_CORE_DisconnectEventHandler)(void *cls, const struct GNUNET_PeerIdentity *peer, void *peer_cls)
Method called whenever a peer disconnects.
struct GNUNET_CORE_Handle * GNUNET_CORE_connect(const struct GNUNET_CONFIGURATION_Handle *cfg, void *cls, GNUNET_CORE_StartupCallback init, GNUNET_CORE_ConnectEventHandler connects, GNUNET_CORE_DisconnectEventHandler disconnects, const struct GNUNET_MQ_MessageHandler *handlers)
Connect to the core service.
Definition: core_api.c:691
struct GNUNET_MQ_Handle * GNUNET_CORE_get_mq(const struct GNUNET_CORE_Handle *h, const struct GNUNET_PeerIdentity *pid)
Obtain the message queue for a connected peer.
Definition: core_api.c:760
void(* GNUNET_CORE_StartupCallback)(void *cls, const struct GNUNET_PeerIdentity *my_identity)
Function called after GNUNET_CORE_connect has succeeded (or failed for good).
void GNUNET_CORE_disconnect(struct GNUNET_CORE_Handle *handle)
Disconnect from the core service.
Definition: core_api.c:729
void *(* GNUNET_CORE_ConnectEventHandler)(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_MQ_Handle *mq)
Method called whenever a given peer connects.
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY
There must only be one value per key; storing a value should fail if a value under the same key alrea...
@ GNUNET_OK
@ GNUNET_YES
@ GNUNET_NO
@ GNUNET_SYSERR
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur.
@ GNUNET_ERROR_TYPE_DEBUG
@ GNUNET_ERROR_TYPE_INFO
#define GNUNET_new(type)
Allocate a struct or union of the given type.
#define GNUNET_free(ptr)
Wrapper around free.
GNUNET_MQ_Error
Error codes for the queue.
struct GNUNET_MQ_Handle * GNUNET_MQ_queue_for_callbacks(GNUNET_MQ_SendImpl send, GNUNET_MQ_DestroyImpl destroy, GNUNET_MQ_CancelImpl cancel, void *impl_state, const struct GNUNET_MQ_MessageHandler *handlers, GNUNET_MQ_ErrorHandler error_handler, void *cls)
Create a message queue for the specified handlers.
Definition: mq.c:465
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:304
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
void GNUNET_MQ_discard(struct GNUNET_MQ_Envelope *mqm)
Discard the message queue message, free all allocated resources.
Definition: mq.c:285
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct.
Definition: gnunet_mq_lib.h:63
#define GNUNET_MQ_msg_nested_mh(mvar, type, mh)
Allocate a GNUNET_MQ_Envelope, and append a payload message after the given message struct.
struct GNUNET_MQ_MessageHandler * GNUNET_MQ_copy_handlers(const struct GNUNET_MQ_MessageHandler *handlers)
Copy an array of handlers.
Definition: mq.c:957
void GNUNET_MQ_impl_send_continue(struct GNUNET_MQ_Handle *mq)
Call the send implementation for the next queued message, if any.
Definition: mq.c:421
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:78
void GNUNET_MQ_inject_message(struct GNUNET_MQ_Handle *mq, const struct GNUNET_MessageHeader *mh)
Call the message message handler that was registered for the type of the given message in the given m...
Definition: mq.c:187
GNUNET_MQ_PriorityPreferences
Per envelope preferences and priorities.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
enum GNUNET_MQ_PriorityPreferences GNUNET_MQ_env_get_options(struct GNUNET_MQ_Envelope *env)
Get performance preferences set for this envelope.
Definition: mq.c:839
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
void GNUNET_MQ_set_handlers_closure(struct GNUNET_MQ_Handle *mq, void *handlers_cls)
Change the closure argument in all of the handlers of the mq.
Definition: mq.c:489
unsigned int GNUNET_MQ_count_handlers(const struct GNUNET_MQ_MessageHandler *handlers)
Count the handlers in a handler array.
Definition: mq.c:1000
struct GNUNET_MQ_Envelope * GNUNET_MQ_get_current_envelope(struct GNUNET_MQ_Handle *mq)
Function to obtain the current envelope from within GNUNET_MQ_SendImpl implementations.
Definition: mq.c:813
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:683
#define GNUNET_MESSAGE_TYPE_CORE_SEND_REQUEST
Request from client to transmit message.
#define GNUNET_MESSAGE_TYPE_CORE_NOTIFY_CONNECT
Notify clients about new peer-to-peer connections (triggered after key exchange).
#define GNUNET_MESSAGE_TYPE_CORE_NOTIFY_DISCONNECT
Notify clients about peer disconnecting.
#define GNUNET_MESSAGE_TYPE_CORE_INIT
Initial setup message from core client to core.
#define GNUNET_MESSAGE_TYPE_CORE_SEND
Client with message to transmit (after SEND_READY confirmation was received).
#define GNUNET_MESSAGE_TYPE_CORE_NOTIFY_INBOUND
Notify clients about incoming P2P messages.
#define GNUNET_MESSAGE_TYPE_CORE_INIT_REPLY
Response from core to core client to INIT message.
#define GNUNET_MESSAGE_TYPE_CORE_SEND_READY
Confirmation from core that message can now be sent.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:975
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1272
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
#define GNUNET_TIME_STD_BACKOFF(r)
Perform our standard exponential back-off calculation, starting at 1 ms and then going by a factor of...
Message sent by the service to clients to notify them about a peer connecting.
Definition: core.h:123
struct GNUNET_PeerIdentity peer
Identity of the connecting peer.
Definition: core.h:137
Message sent by the service to clients to notify them about a peer disconnecting.
Definition: core.h:146
uint32_t reserved
Always zero.
Definition: core.h:155
struct GNUNET_PeerIdentity peer
Identity of the connecting peer.
Definition: core.h:160
struct GNUNET_MQ_Handle * mq
Our connection to the ARM service.
Definition: arm_api.c:107
const struct GNUNET_CONFIGURATION_Handle * cfg
The configuration that we are using.
Definition: arm_api.c:112
struct GNUNET_TIME_Relative retry_backoff
Current delay we use for re-trying to connect to core.
Definition: arm_api.c:152
struct GNUNET_SCHEDULER_Task * reconnect_task
ID of the reconnect task (if any).
Definition: arm_api.c:147
Internal representation of the hash map.
Context for the core service connection.
Definition: core_api.c:78
void * cls
Closure for the various callbacks.
Definition: core_api.c:87
struct GNUNET_CONTAINER_MultiPeerMap * peers
Hash map listing all of the peers that we are currently connected to.
Definition: core_api.c:118
GNUNET_CORE_DisconnectEventHandler disconnects
Function to call whenever we're notified about a peer disconnecting.
Definition: core_api.c:102
GNUNET_CORE_ConnectEventHandler connects
Function to call whenever we're notified about a peer connecting.
Definition: core_api.c:97
struct GNUNET_MQ_Handle * mq
Our message queue for transmissions to the service.
Definition: core_api.c:112
struct GNUNET_MQ_MessageHandler * handlers
Function handlers for messages of particular type.
Definition: core_api.c:107
int have_init
Did we ever get INIT?
Definition: core_api.c:143
struct GNUNET_TIME_Relative retry_backoff
Current delay we use for re-trying to connect to core.
Definition: core_api.c:133
GNUNET_CORE_StartupCallback init
Function to call once we've handshaked with the core service.
Definition: core_api.c:92
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we're using.
Definition: core_api.c:82
unsigned int hcnt
Number of entries in the handlers array.
Definition: core_api.c:138
struct GNUNET_SCHEDULER_Task * reconnect_task
ID of reconnect task (if any).
Definition: core_api.c:128
struct GNUNET_PeerIdentity me
Identity of this peer.
Definition: core_api.c:123
Handle to a message queue.
Definition: mq.c:87
Message handler for a specific message type.
Header for all communications.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.
The identity of the host (wraps the signing key of the peer).
Entry in list of pending tasks.
Definition: scheduler.c:136
Time for relative time used by GNUnet, in microseconds.
struct GNUNET_MQ_Handle * mq
Connection to VPN service.
Definition: vpn_api.c:44
Message transmitted core clients to gnunet-service-core to start the interaction.
Definition: core.h:82
Message transmitted by the gnunet-service-core process to its clients in response to an INIT message.
Definition: core.h:100
Message sent by the service to clients to notify them about messages being received or transmitted.
Definition: core.h:174
struct GNUNET_MessageHeader header
Header with type GNUNET_MESSAGE_TYPE_CORE_NOTIFY_INBOUND or GNUNET_MESSAGE_TYPE_CORE_NOTIFY_OUTBOUND.
Definition: core.h:179
struct GNUNET_PeerIdentity peer
Identity of the receiver or sender.
Definition: core.h:184
Information we track for each peer.
Definition: core_api.c:39
uint16_t smr_id_gen
SendMessageRequest ID generator for this peer.
Definition: core_api.c:70
struct GNUNET_CORE_Handle * h
Corresponding CORE handle.
Definition: core_api.c:43
void * client_cls
Value the client returned when we connected, used as the closure in various places.
Definition: core_api.c:60
struct GNUNET_PeerIdentity peer
Peer the record is about.
Definition: core_api.c:65
struct GNUNET_MQ_Handle * mq
Message queue for the peer.
Definition: core_api.c:48
struct GNUNET_MQ_Envelope * env
Message we are currently trying to pass to the CORE service for this peer (from mq).
Definition: core_api.c:54
Core notifying client that it is allowed to now transmit a message to the given target (response to G...
Definition: core.h:240
uint16_t smr_id
smr_id from the request.
Definition: core.h:257
struct GNUNET_PeerIdentity peer
Identity of the intended target.
Definition: core.h:262
Client notifying core about the maximum-priority message it has in the queue for a particular target.
Definition: core.h:195
uint32_t priority
How important is this message?
Definition: core.h:204
struct GNUNET_PeerIdentity peer
Identity of the intended target.
Definition: core.h:215
uint16_t size
How large is the message?
Definition: core.h:225
uint16_t smr_id
Counter for this peer to match SMRs to replies.
Definition: core.h:230
Client asking core to transmit a particular message to a particular target (response to GNUNET_MESSAG...
Definition: core.h:271
uint32_t priority
How important is this message? Contains a enum GNUNET_MQ_PriorityPreferences in NBO.
Definition: core.h:281
struct GNUNET_PeerIdentity peer
Identity of the intended receiver.
Definition: core.h:292