2 This file is part of GNUnet.
3 (C) 2009, 2010 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file mesh/mesh_api.c
23 * @brief mesh service; API for the Mesh. This is used to talk to arbitrary peers
24 * as of 2011-01Jan-06 this is a mockup.
25 * @author Philipp Tölke
28 #include <gnunet_constants.h>
29 #include <gnunet_mesh_service.h>
30 #include <gnunet_core_service.h>
31 #include <gnunet_container_lib.h>
32 #include <gnunet_applications.h>
36 uint32_t id GNUNET_PACKED;
37 struct GNUNET_PeerIdentity initiator;
38 struct GNUNET_PeerIdentity target;
41 static uint32_t current_id = 0;
45 struct GNUNET_MessageHeader hdr;
47 /* followed by another GNUNET_MessageHeader */
53 GNUNET_CONNECTION_TransmitReadyNotify notify;
54 struct GNUNET_MESH_Tunnel *tunnel;
57 struct GNUNET_MESH_Tunnel
59 /* The other peer this tunnel leads to; just unicast for the moment! */
60 struct GNUNET_PeerIdentity peer;
64 /* The handlers and cls for outbound tunnels. Are NULL for inbound tunnels. */
65 GNUNET_MESH_TunnelDisconnectHandler disconnect_handler;
66 GNUNET_MESH_TunnelConnectHandler connect_handler;
69 struct GNUNET_MESH_Handle *handle;
71 /* The application-type requested for this tunnel. Is only needed for pending
74 uint16_t application_type;
76 struct GNUNET_MESH_TransmitHandle *notify_handle;
78 /* The context of the receive-function. */
81 /* A list, usable by application-code (for queues) */
85 /* A pointer, usable by application-code */
89 struct tunnel_list_element
91 struct GNUNET_MESH_Tunnel tunnel;
92 struct tunnel_list_element *next, *prev;
97 struct tunnel_list_element *head, *tail;
100 struct type_list_element
102 GNUNET_MESH_ApplicationType type;
103 struct type_list_element *next, *prev;
106 struct peer_list_element
108 struct GNUNET_PeerIdentity peer;
110 /* list of application-types */
111 struct type_list_element *type_head, *type_tail;
113 struct GNUNET_TRANSPORT_ATS_Information atsi;
114 struct peer_list_element *next, *prev;
119 struct peer_list_element *head, *tail;
122 struct GNUNET_MESH_Handle
124 struct GNUNET_CORE_Handle *core;
125 struct GNUNET_MESH_MessageHandler *handlers;
126 struct GNUNET_PeerIdentity myself;
127 unsigned int connected_to_core;
128 struct peer_list connected_peers;
129 struct tunnel_list established_tunnels;
130 struct tunnel_list pending_tunnels;
131 struct tunnel_list pending_by_type_tunnels;
133 GNUNET_MESH_TunnelEndHandler *cleaner;
134 size_t hello_message_size;
135 uint16_t *hello_message;
139 send_end_connect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
141 if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
144 struct GNUNET_MESH_Tunnel *tunnel = cls;
146 tunnel->connect_handler (tunnel->handler_cls, NULL, NULL);
150 send_self_connect (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
152 if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
155 struct GNUNET_MESH_Tunnel *tunnel = cls;
157 tunnel->connect_handler (tunnel->handler_cls, &tunnel->handle->myself, NULL);
158 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
162 call_connect_handler (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
164 if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
167 struct GNUNET_MESH_Tunnel *tunnel = cls;
169 tunnel->connect_handler (tunnel->handler_cls, &tunnel->peer, NULL);
170 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
174 core_startup (void *cls, struct GNUNET_CORE_Handle *core
175 __attribute__ ((unused)),
176 const struct GNUNET_PeerIdentity *my_identity,
177 const struct GNUNET_CRYPTO_RsaPublicKeyBinaryEncoded *publicKey
178 __attribute__ ((unused)))
180 struct GNUNET_MESH_Handle *handle = cls;
182 memcpy (&handle->myself, my_identity, sizeof (struct GNUNET_PeerIdentity));
183 handle->connected_to_core = GNUNET_YES;
187 send_hello_message (void *cls, size_t size, void *buf)
192 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Sending hello\n");
194 struct GNUNET_MESH_Handle *handle = cls;
195 struct GNUNET_MessageHeader *hdr = buf;
198 sizeof (struct GNUNET_MessageHeader) + handle->hello_message_size;
203 hdr->type = htons (GNUNET_MESSAGE_TYPE_MESH_HELLO);
204 hdr->size = htons (size);
206 memcpy (hdr + 1, handle->hello_message, handle->hello_message_size);
212 * Core calls this if we are connected to a new peer.
214 * The peer is added to the connected_peers-list.
218 core_connect (void *cls, const struct GNUNET_PeerIdentity *peer,
219 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
221 struct GNUNET_MESH_Handle *handle = cls;
223 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
224 "Core tells us we are connected to peer %s\n", GNUNET_i2s (peer));
226 /* Send a hello to this peer */
227 GNUNET_CORE_notify_transmit_ready (handle->core, GNUNET_NO, 42,
228 GNUNET_TIME_UNIT_SECONDS, peer,
229 sizeof (struct GNUNET_MessageHeader) +
230 handle->hello_message_size,
231 &send_hello_message, cls);
233 /* put the new peer into the list of connected peers */
234 struct peer_list_element *element =
235 GNUNET_malloc (sizeof (struct peer_list_element));
236 memcpy (&element->peer, peer, sizeof (struct GNUNET_PeerIdentity));
239 memcpy (&element->atsi, atsi,
240 sizeof (struct GNUNET_TRANSPORT_ATS_Information));
242 GNUNET_CONTAINER_DLL_insert_after (handle->connected_peers.head,
243 handle->connected_peers.tail,
244 handle->connected_peers.tail, element);
246 struct tunnel_list_element *tunnel = handle->pending_tunnels.head;
248 while (tunnel != NULL)
251 memcmp (&tunnel->tunnel.peer, peer,
252 sizeof (struct GNUNET_PeerIdentity)))
254 struct tunnel_list_element *next = tunnel->next;
256 GNUNET_CONTAINER_DLL_remove (handle->pending_tunnels.head,
257 handle->pending_tunnels.tail, tunnel);
258 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
259 handle->established_tunnels.tail,
260 handle->established_tunnels.tail,
262 tunnel->tunnel.connect_handler (tunnel->tunnel.handler_cls, peer, atsi);
263 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
267 tunnel = tunnel->next;
272 * Core calls this if we disconnect a peer
274 * Remove this peer from the list of connected peers
275 * Close all tunnels this peer belongs to
278 core_disconnect (void *cls, const struct GNUNET_PeerIdentity *peer)
280 struct GNUNET_MESH_Handle *handle = cls;
282 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
283 "Core tells us we are no longer connected to peer %s\n",
286 struct peer_list_element *element = handle->connected_peers.head;
288 while (element != NULL)
290 if (0 == memcmp (&element->peer, peer, sizeof (struct GNUNET_PeerIdentity)))
292 element = element->next;
296 GNUNET_CONTAINER_DLL_remove (handle->connected_peers.head,
297 handle->connected_peers.tail, element);
298 while (element->type_head != NULL)
300 struct type_list_element *tail = element->type_tail;
302 GNUNET_CONTAINER_DLL_remove (element->type_head, element->type_tail,
306 GNUNET_free (element);
309 struct tunnel_list_element *telement = handle->established_tunnels.head;
311 while (telement != NULL)
314 memcmp (&telement->tunnel.peer, peer,
315 sizeof (struct GNUNET_PeerIdentity)))
317 /* disconnect tunnels */
318 /* outbound tunnels */
319 if (telement->tunnel.connect_handler != NULL &&
320 NULL != telement->tunnel.disconnect_handler)
321 telement->tunnel.disconnect_handler (telement->tunnel.handler_cls,
323 /* inbound tunnels */
324 else if (NULL != handle->cleaner)
325 handle->cleaner (handle->cls, &telement->tunnel, &telement->tunnel.ctx);
327 struct tunnel_list_element *next = telement->next;
329 GNUNET_CONTAINER_DLL_remove (handle->established_tunnels.head,
330 handle->established_tunnels.tail, telement);
331 GNUNET_free (telement);
336 telement = telement->next;
342 * Receive a message from core.
343 * This is a hello-message, containing the application-types the other peer can receive
346 receive_hello (void *cls, const struct GNUNET_PeerIdentity *other,
347 const struct GNUNET_MessageHeader *message,
348 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
350 struct GNUNET_MESH_Handle *handle = cls;
351 uint16_t *num = (uint16_t *) (message + 1);
352 GNUNET_MESH_ApplicationType *ports =
353 (GNUNET_MESH_ApplicationType *) (num + 1);
356 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
357 "The peer %s tells us he supports %d application-types.\n",
358 GNUNET_i2s (other), ntohs (*num));
360 struct peer_list_element *element = handle->connected_peers.head;
362 while (element != NULL)
365 memcmp (&element->peer, other, sizeof (struct GNUNET_PeerIdentity)))
367 element = element->next;
370 GNUNET_assert (NULL != element);
372 for (i = 0; i < ntohs (*num); i++)
374 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
375 "The peer %s newly supports the application-type %d\n",
376 GNUNET_i2s (other), ntohs (ports[i]));
377 if (GNUNET_APPLICATION_TYPE_END == ntohs (ports[i]))
379 struct type_list_element *new_type = GNUNET_malloc (sizeof *new_type);
381 new_type->type = (GNUNET_MESH_ApplicationType) ntohs (ports[i]);
382 GNUNET_CONTAINER_DLL_insert (element->type_head, element->type_tail,
386 struct type_list_element *type;
388 for (type = element->type_head; type != NULL; type = type->next)
390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
391 "The peer %s supports the application-type %d\n",
392 GNUNET_i2s (other), type->type);
395 struct tunnel_list_element *tunnel = handle->pending_by_type_tunnels.head;
397 while (tunnel != NULL)
399 struct tunnel_list_element *next = tunnel->next;
401 for (i = 0; i < ntohs (*num); i++)
403 if (ntohs (ports[i]) == tunnel->tunnel.application_type)
405 GNUNET_CONTAINER_DLL_remove (handle->pending_by_type_tunnels.head,
406 handle->pending_by_type_tunnels.tail,
408 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
409 handle->established_tunnels.tail,
410 handle->established_tunnels.tail,
412 memcpy (&tunnel->tunnel.peer, other,
413 sizeof (struct GNUNET_PeerIdentity));
414 tunnel->tunnel.connect_handler (tunnel->tunnel.handler_cls,
415 &tunnel->tunnel.peer, atsi);
416 GNUNET_SCHEDULER_add_now (send_end_connect, tunnel);
420 if (ntohs (ports[i]) == tunnel->tunnel.application_type)
423 tunnel = tunnel->next;
429 * Receive a message from core.
432 core_receive (void *cls, const struct GNUNET_PeerIdentity *other,
433 const struct GNUNET_MessageHeader *message,
434 const struct GNUNET_TRANSPORT_ATS_Information *atsi)
436 struct GNUNET_MESH_Handle *handle = cls;
437 struct tunnel_message *tmessage = (struct tunnel_message *) message;
438 struct GNUNET_MessageHeader *rmessage =
439 (struct GNUNET_MessageHeader *) (tmessage + 1);
441 struct GNUNET_MESH_MessageHandler *handler;
443 for (handler = handle->handlers; handler->callback != NULL; handler++)
445 if ((ntohs (rmessage->type) == handler->type) &&
446 ((handler->expected_size == 0) ||
447 (handler->expected_size == ntohs (rmessage->size))))
453 /* handler->callback handles this message */
455 /* If no handler was found, drop the message but keep the channel open */
456 if (handler->callback == NULL)
458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
459 "Received message of type %d from peer %s; dropping it.\n",
460 ntohs (rmessage->type), GNUNET_i2s (other));
464 struct tunnel_list_element *tunnel = handle->established_tunnels.head;
466 while (tunnel != NULL)
468 if (tunnel->tunnel.id.id == tmessage->id.id &&
470 memcmp (&tmessage->id.initiator, &tunnel->tunnel.id.initiator,
471 sizeof (struct GNUNET_PeerIdentity))) &&
473 memcmp (&tmessage->id.target, &tunnel->tunnel.id.target,
474 sizeof (struct GNUNET_PeerIdentity))))
476 tunnel = tunnel->next;
479 /* if no tunnel was found: create a new inbound tunnel */
482 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
483 "New inbound tunnel from peer %s; first message has type %d.\n",
484 GNUNET_i2s (other), ntohs (rmessage->type));
485 tunnel = GNUNET_malloc (sizeof (struct tunnel_list_element));
486 tunnel->tunnel.connect_handler = NULL;
487 tunnel->tunnel.disconnect_handler = NULL;
488 tunnel->tunnel.handler_cls = NULL;
489 tunnel->tunnel.ctx = NULL;
490 tunnel->tunnel.handle = handle;
491 memcpy (&tunnel->tunnel.peer, other, sizeof (struct GNUNET_PeerIdentity));
492 memcpy (&tunnel->tunnel.id, &tmessage->id, sizeof (struct tunnel_id));
494 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
495 handle->established_tunnels.tail,
496 handle->established_tunnels.tail,
500 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
501 "Inbound message from peer %s; type %d.\n", GNUNET_i2s (other),
502 ntohs (rmessage->type));
504 return handler->callback (handle->cls, &tunnel->tunnel, &tunnel->tunnel.ctx,
505 other, rmessage, atsi);
508 struct GNUNET_MESH_Tunnel *
509 GNUNET_MESH_peer_request_connect_by_type (struct GNUNET_MESH_Handle *handle,
510 struct GNUNET_TIME_Relative timeout,
511 GNUNET_MESH_ApplicationType
513 GNUNET_MESH_TunnelConnectHandler
515 GNUNET_MESH_TunnelDisconnectHandler
516 disconnect_handler, void *handler_cls)
518 /* Look in the list of connected peers */
519 struct peer_list_element *element = handle->connected_peers.head;
521 while (element != NULL)
523 struct type_list_element *i;
525 for (i = element->type_head; i != NULL; i = i->next)
526 if (application_type == i->type)
527 return GNUNET_MESH_peer_request_connect_all (handle, timeout, 1,
532 element = element->next;
535 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Trying to connect by tupe %d.\n",
538 /* Put into pending list */
539 struct tunnel_list_element *tunnel =
540 GNUNET_malloc (sizeof (struct tunnel_list_element));
542 tunnel->tunnel.connect_handler = connect_handler;
543 tunnel->tunnel.disconnect_handler = disconnect_handler;
544 tunnel->tunnel.handler_cls = handler_cls;
545 tunnel->tunnel.ctx = NULL;
546 tunnel->tunnel.handle = handle;
547 memcpy (&tunnel->tunnel.id.initiator, &handle->myself,
548 sizeof (struct GNUNET_PeerIdentity));
549 tunnel->tunnel.id.id = current_id++;
550 tunnel->tunnel.application_type = application_type;
552 GNUNET_CONTAINER_DLL_insert_after (handle->pending_by_type_tunnels.head,
553 handle->pending_by_type_tunnels.tail,
554 handle->pending_by_type_tunnels.tail,
556 return &tunnel->tunnel;
561 struct GNUNET_MESH_Tunnel *
562 GNUNET_MESH_peer_request_connect_all (struct GNUNET_MESH_Handle *handle,
563 struct GNUNET_TIME_Relative timeout,
564 unsigned int num_peers,
565 const struct GNUNET_PeerIdentity *peers,
566 GNUNET_MESH_TunnelConnectHandler
568 GNUNET_MESH_TunnelDisconnectHandler
569 disconnect_handler, void *handler_cls)
574 struct tunnel_list_element *tunnel =
575 GNUNET_malloc (sizeof (struct tunnel_list_element));
577 tunnel->tunnel.connect_handler = connect_handler;
578 tunnel->tunnel.disconnect_handler = disconnect_handler;
579 tunnel->tunnel.handler_cls = handler_cls;
580 tunnel->tunnel.ctx = NULL;
581 tunnel->tunnel.handle = handle;
582 memcpy (&tunnel->tunnel.id.initiator, &handle->myself,
583 sizeof (struct GNUNET_PeerIdentity));
584 memcpy (&tunnel->tunnel.id.target, peers,
585 sizeof (struct GNUNET_PeerIdentity));
586 tunnel->tunnel.id.id = current_id++;
587 memcpy (&tunnel->tunnel.peer, peers, sizeof (struct GNUNET_PeerIdentity));
589 struct peer_list_element *element = handle->connected_peers.head;
591 while (element != NULL)
594 memcmp (&element->peer, peers, sizeof (struct GNUNET_PeerIdentity)))
596 element = element->next;
601 /* we are connected to this peer */
602 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
603 handle->established_tunnels.tail,
604 handle->established_tunnels.tail,
606 GNUNET_SCHEDULER_add_now (call_connect_handler, tunnel);
609 memcmp (peers, &handle->myself, sizeof (struct GNUNET_PeerIdentity)))
611 /* we are the peer */
612 GNUNET_CONTAINER_DLL_insert_after (handle->established_tunnels.head,
613 handle->established_tunnels.tail,
614 handle->established_tunnels.tail,
616 GNUNET_SCHEDULER_add_now (send_self_connect, tunnel);
620 /* we are not connected to this peer */
621 GNUNET_CONTAINER_DLL_insert_after (handle->pending_tunnels.head,
622 handle->pending_tunnels.tail,
623 handle->pending_tunnels.tail, tunnel);
624 (void) GNUNET_CORE_peer_request_connect (handle->core, peers, NULL, NULL);
627 return &tunnel->tunnel;
630 const struct GNUNET_PeerIdentity *
631 GNUNET_MESH_get_peer (const struct GNUNET_MESH_Tunnel *tunnel)
633 return &tunnel->peer;
637 core_notify (void *cls, size_t size, void *buf)
639 struct notify_cls *ncls = cls;
640 struct GNUNET_MESH_Tunnel *tunnel = ncls->tunnel;
642 tunnel->notify_handle = NULL;
643 struct tunnel_message *message = buf;
644 void *cbuf = (void *) &message[1];
646 GNUNET_assert (NULL != ncls->notify);
649 ncls->notify (ncls->notify_cls, size - sizeof (struct tunnel_message),
657 sent += sizeof (struct tunnel_message);
659 message->hdr.type = htons (GNUNET_MESSAGE_TYPE_MESH);
660 message->hdr.size = htons (sent);
661 memcpy (&message->id, &tunnel->id, sizeof (struct tunnel_id));
667 * Ask the mesh to call "notify" once it is ready to transmit the
668 * given number of bytes to the specified "target". If we are not yet
669 * connected to the specified peer, a call to this function will cause
670 * us to try to establish a connection.
672 * @param tunnel tunnel to use for transmission
673 * @param cork is corking allowed for this transmission?
674 * @param priority how important is the message?
675 * @param maxdelay how long can the message wait?
676 * @param target destination for the message, NULL for multicast to all tunnel targets
677 * @param notify_size how many bytes of buffer space does notify want?
678 * @param notify function to call when buffer space is available;
679 * will be called with NULL on timeout or if the overall queue
680 * for this peer is larger than queue_size and this is currently
681 * the message with the lowest priority
682 * @param notify_cls closure for notify
683 * @return non-NULL if the notify callback was queued,
684 * NULL if we can not even queue the request (insufficient
685 * memory); if NULL is returned, "notify" will NOT be called.
687 struct GNUNET_MESH_TransmitHandle *
688 GNUNET_MESH_notify_transmit_ready (struct GNUNET_MESH_Tunnel *tunnel, int cork,
690 struct GNUNET_TIME_Relative maxdelay,
691 const struct GNUNET_PeerIdentity *target
692 __attribute__ ((unused)), size_t notify_size,
693 GNUNET_CONNECTION_TransmitReadyNotify notify,
696 if (NULL != tunnel->notify_handle)
702 struct notify_cls *cls = GNUNET_malloc (sizeof (struct notify_cls));
704 cls->notify_cls = notify_cls;
705 GNUNET_assert (NULL != notify);
706 cls->notify = notify;
707 cls->tunnel = tunnel;
709 tunnel->notify_handle =
710 (struct GNUNET_MESH_TransmitHandle *)
711 GNUNET_CORE_notify_transmit_ready (tunnel->handle->core, cork, priority,
712 maxdelay, &tunnel->peer,
714 sizeof (struct tunnel_message),
715 &core_notify, (void *) cls);
717 return tunnel->notify_handle;
721 GNUNET_MESH_notify_transmit_ready_cancel (struct GNUNET_MESH_TransmitHandle *th)
723 GNUNET_CORE_notify_transmit_ready_cancel ((struct GNUNET_CORE_TransmitHandle
728 GNUNET_MESH_tunnel_set_head (struct GNUNET_MESH_Tunnel *tunnel, void *head)
730 tunnel->app_head = head;
734 GNUNET_MESH_tunnel_set_tail (struct GNUNET_MESH_Tunnel *tunnel, void *tail)
736 tunnel->app_tail = tail;
740 GNUNET_MESH_tunnel_get_head (struct GNUNET_MESH_Tunnel *tunnel)
742 return tunnel->app_head;
746 GNUNET_MESH_tunnel_get_tail (struct GNUNET_MESH_Tunnel *tunnel)
748 return tunnel->app_head;
752 GNUNET_MESH_tunnel_set_data (struct GNUNET_MESH_Tunnel *tunnel, void *data)
754 tunnel->app_data = data;
758 GNUNET_MESH_tunnel_get_data (struct GNUNET_MESH_Tunnel *tunnel)
760 return tunnel->app_data;
765 build_hello_message (struct GNUNET_MESH_Handle *handle,
766 const GNUNET_MESH_ApplicationType *stypes)
769 const GNUNET_MESH_ApplicationType *t;
771 for (t = stypes; *t != GNUNET_APPLICATION_TYPE_END; t++, num++) ;
773 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I can handle %d app-types.\n", num);
775 handle->hello_message_size = sizeof (uint16_t) + /* For the number of types */
776 num * sizeof (GNUNET_MESH_ApplicationType); /* For the types */
778 uint16_t *nums = GNUNET_malloc (handle->hello_message_size);
779 GNUNET_MESH_ApplicationType *types =
780 (GNUNET_MESH_ApplicationType *) (nums + 1);
786 for (i = 0; i < num; i++)
788 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "I can handle the app-type %d\n",
790 types[i] = htons (stypes[i]);
793 handle->hello_message = nums;
797 struct GNUNET_MESH_Handle *
798 GNUNET_MESH_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, void *cls,
799 GNUNET_MESH_TunnelEndHandler cleaner,
800 const struct GNUNET_MESH_MessageHandler *handlers,
801 const GNUNET_MESH_ApplicationType *stypes)
803 struct GNUNET_MESH_Handle *ret =
804 GNUNET_malloc (sizeof (struct GNUNET_MESH_Handle));
806 ret->connected_to_core = GNUNET_NO;
807 ret->connected_peers.head = NULL;
808 ret->connected_peers.tail = NULL;
809 ret->cleaner = cleaner;
812 const struct GNUNET_MESH_MessageHandler *it;
813 unsigned int len = 1;
815 for (it = handlers; it->callback != NULL; it++)
821 GNUNET_malloc (len * sizeof (struct GNUNET_MESH_MessageHandler));
822 memset (ret->handlers, 0, len * sizeof (struct GNUNET_MESH_MessageHandler));
823 memcpy (ret->handlers, handlers,
824 len * sizeof (struct GNUNET_MESH_MessageHandler));
826 build_hello_message (ret, stypes);
828 static const struct GNUNET_CORE_MessageHandler core_handlers[] = {
829 {&core_receive, GNUNET_MESSAGE_TYPE_MESH, 0},
830 {&receive_hello, GNUNET_MESSAGE_TYPE_MESH_HELLO, 0},
835 GNUNET_CORE_connect (cfg, 42, ret, &core_startup, &core_connect,
836 &core_disconnect, NULL, NULL, GNUNET_NO, NULL,
837 GNUNET_NO, core_handlers);
842 GNUNET_MESH_disconnect (struct GNUNET_MESH_Handle *handle)
844 GNUNET_free (handle->handlers);
845 GNUNET_free (handle->hello_message);
846 GNUNET_CORE_disconnect (handle->core);
848 struct peer_list_element *element = handle->connected_peers.head;
850 while (element != NULL)
852 struct peer_list_element *next = element->next;
854 while (element->type_head != NULL)
856 struct type_list_element *tail = element->type_tail;
858 GNUNET_CONTAINER_DLL_remove (element->type_head, element->type_tail,
862 GNUNET_free (element);
866 struct tunnel_list_element *tunnel = handle->pending_tunnels.head;
868 while (tunnel != NULL)
870 struct tunnel_list_element *next = tunnel->next;
872 GNUNET_free (tunnel);
875 tunnel = handle->established_tunnels.head;;
876 while (tunnel != NULL)
878 struct tunnel_list_element *next = tunnel->next;
880 GNUNET_free (tunnel);
884 GNUNET_free (handle);
887 /* end of mesh_api.c */