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22 * @file transport/transport-testing2.c
23 * @brief functions related to testing-tng
24 * @author Christian Grothoff
25 * @author Julius Bünger
28 #include "gnunet_util_lib.h"
29 #include "gnunet_protocols.h"
30 #include "gnunet_constants.h"
31 #include "transport-testing2.h"
32 #include "gnunet_ats_transport_service.h"
33 #include "gnunet_hello_lib.h"
34 #include "gnunet_signatures.h"
35 #include "transport.h"
38 #define LOG(kind, ...) GNUNET_log_from (kind, "transport-testing2", __VA_ARGS__)
42 * @brief Handle to a transport communicator
44 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle
47 * @brief Handle to the configuration
49 struct GNUNET_CONFIGURATION_Handle *cfg;
52 * @brief File name of configuration file
57 * @brief Handle to the transport service
59 struct GNUNET_SERVICE_Handle *tsh;
62 * @brief Task that will be run on shutdown to stop and clean transport
65 struct GNUNET_SCHEDULER_Task *ts_shutdown_task;
68 * @brief Handle to the client
70 struct GNUNET_SERVICE_Client *client;
73 * @brief Handle to the client
75 struct GNUNET_MQ_Handle *c_mq;
78 * @brief Process of the communicator
80 struct GNUNET_OS_Process *c_proc;
83 * @brief Task that will be run on shutdown to stop and clean communicator
85 struct GNUNET_SCHEDULER_Task *c_shutdown_task;
88 * @brief Characteristics of the communicator
90 enum GNUNET_TRANSPORT_CommunicatorCharacteristics c_characteristics;
93 * @brief Specifies supported addresses
98 * @brief Specifies supported addresses
103 * @brief Head of the DLL of queues associated with this communicator
105 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *queue_head;
108 * @brief Tail of the DLL of queues associated with this communicator
110 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *queue_tail;
112 /* Callbacks + Closures */
114 * @brief Callback called when a new communicator connects
116 GNUNET_TRANSPORT_TESTING_CommunicatorAvailableCallback
117 communicator_available_cb;
120 * @brief Callback called when a new communicator connects
122 GNUNET_TRANSPORT_TESTING_AddAddressCallback add_address_cb;
125 * @brief Callback called when a new communicator connects
127 GNUNET_TRANSPORT_TESTING_QueueCreateReplyCallback queue_create_reply_cb;
130 * @brief Callback called when a new communicator connects
132 GNUNET_TRANSPORT_TESTING_AddQueueCallback add_queue_cb;
135 * @brief Callback called when a new communicator connects
137 GNUNET_TRANSPORT_TESTING_IncomingMessageCallback incoming_msg_cb;
140 * @brief Closure to the callback
147 * @brief Queue of a communicator and some context
149 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue
152 * @brief Handle to the TransportCommunicator
154 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h;
157 * @brief Envelope to a message that requests the opening of the queue.
159 * If the client already requests queue(s), but the communicator is not yet
160 * connected, we cannot send the request to open the queue. Save it until the
161 * communicator becomes available and send it then.
163 struct GNUNET_MQ_Envelope *open_queue_env;
166 * @brief Peer ID of the peer on the other side of the queue
168 struct GNUNET_PeerIdentity peer_id;
176 * @brief Current message id
181 * An `enum GNUNET_NetworkType` in NBO.
186 * Maximum transmission unit, in NBO. UINT32_MAX for unlimited.
191 * An `enum GNUNET_TRANSPORT_ConnectionStatus` in NBO.
196 * @brief Next element inside a DLL
198 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *next;
201 * @brief Previous element inside a DLL
203 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *prev;
208 * @brief Handle/Context to a single transmission
210 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorTransmission
216 * @brief Check whether incoming msg indicating available communicator is
220 * @param msg Message struct
222 * @return GNUNET_YES in case message is correct
225 check_communicator_available (
227 const struct GNUNET_TRANSPORT_CommunicatorAvailableMessage *msg)
231 size = ntohs (msg->header.size) - sizeof(*msg);
233 return GNUNET_OK; /* receive-only communicator */
234 GNUNET_MQ_check_zero_termination (msg);
240 * @brief Handle new communicator
242 * Store characteristics of communicator, call respective client callback.
244 * @param cls Closure - communicator handle
245 * @param msg Message struct
248 handle_communicator_available (
250 const struct GNUNET_TRANSPORT_CommunicatorAvailableMessage *msg)
252 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
255 size = ntohs (msg->header.size) - sizeof(*msg);
257 return; /* receive-only communicator */
258 tc_h->c_characteristics = ntohl (msg->cc);
259 tc_h->c_addr_prefix = GNUNET_strdup ((const char *) &msg[1]);
260 if (NULL != tc_h->communicator_available_cb)
262 LOG (GNUNET_ERROR_TYPE_DEBUG, "calling communicator_available_cb()\n");
263 tc_h->communicator_available_cb (tc_h->cb_cls,
265 tc_h->c_characteristics,
266 tc_h->c_addr_prefix);
268 GNUNET_SERVICE_client_continue (tc_h->client);
273 * Address of our peer added. Test message is well-formed.
275 * @param cls the client
276 * @param aam the send message that was sent
277 * @return #GNUNET_OK if message is well-formed
280 check_add_address (void *cls,
281 const struct GNUNET_TRANSPORT_AddAddressMessage *msg)
283 struct TransportClient *tc = cls;
285 // if (CT_COMMUNICATOR != tc->type)
288 // return GNUNET_SYSERR;
290 GNUNET_MQ_check_zero_termination (msg);
296 * @brief The communicator informs about an address.
298 * Store address and call client callback.
300 * @param cls Closure - communicator handle
304 handle_add_address (void *cls,
305 const struct GNUNET_TRANSPORT_AddAddressMessage *msg)
307 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
309 size = ntohs (msg->header.size) - sizeof(*msg);
311 return; /* receive-only communicator */
312 LOG (GNUNET_ERROR_TYPE_DEBUG, "received add address cb %u\n", size);
313 tc_h->c_address = GNUNET_strdup ((const char *) &msg[1]);
314 if (NULL != tc_h->add_address_cb)
316 LOG (GNUNET_ERROR_TYPE_DEBUG, "calling add_address_cb()\n");
317 tc_h->add_address_cb (tc_h->cb_cls,
320 GNUNET_TIME_relative_ntoh (msg->expiration),
324 GNUNET_SERVICE_client_continue (tc_h->client);
329 * Incoming message. Test message is well-formed.
331 * @param cls the client
332 * @param msg the send message that was sent
333 * @return #GNUNET_OK if message is well-formed
336 check_incoming_msg (void *cls,
337 const struct GNUNET_TRANSPORT_IncomingMessage *msg)
339 // struct TransportClient *tc = cls;
341 // if (CT_COMMUNICATOR != tc->type)
344 // return GNUNET_SYSERR;
346 GNUNET_MQ_check_boxed_message (msg);
352 * @brief Receive an incoming message.
354 * Pass the message to the client.
356 * @param cls Closure - communicator handle
360 handle_incoming_msg (void *cls,
361 const struct GNUNET_TRANSPORT_IncomingMessage *inc_msg)
363 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
364 struct GNUNET_MessageHeader *msg;
365 msg = (struct GNUNET_MessageHeader *)&inc_msg[1];
366 size_t payload_len = ntohs (msg->size) - sizeof (struct
367 GNUNET_MessageHeader);
369 if (NULL != tc_h->incoming_msg_cb)
371 tc_h->incoming_msg_cb (tc_h->cb_cls,
378 LOG (GNUNET_ERROR_TYPE_WARNING,
379 "Incoming message from communicator but no handler!\n");
381 if (0 != ntohl (inc_msg->fc_on))
383 /* send ACK when done to communicator for flow control! */
384 struct GNUNET_MQ_Envelope *env;
385 struct GNUNET_TRANSPORT_IncomingMessageAck *ack;
387 env = GNUNET_MQ_msg (ack, GNUNET_MESSAGE_TYPE_TRANSPORT_INCOMING_MSG_ACK);
388 ack->reserved = htonl (0);
389 ack->fc_id = inc_msg->fc_id;
390 ack->sender = inc_msg->sender;
391 GNUNET_MQ_send (tc_h->c_mq, env);
394 GNUNET_SERVICE_client_continue (tc_h->client);
399 * @brief Communicator informs that it tries to establish requested queue
401 * @param cls Closure - communicator handle
405 handle_queue_create_ok (void *cls,
406 const struct GNUNET_TRANSPORT_CreateQueueResponse *msg)
408 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
410 if (NULL != tc_h->queue_create_reply_cb)
412 tc_h->queue_create_reply_cb (tc_h->cb_cls, tc_h, GNUNET_YES);
414 GNUNET_SERVICE_client_continue (tc_h->client);
419 * @brief Communicator informs that it wont try establishing requested queue.
421 * It will not do so probably because the address is bougus (see comment to
422 * #GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_FAIL)
424 * @param cls Closure - communicator handle
428 handle_queue_create_fail (
430 const struct GNUNET_TRANSPORT_CreateQueueResponse *msg)
432 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
434 if (NULL != tc_h->queue_create_reply_cb)
436 tc_h->queue_create_reply_cb (tc_h->cb_cls, tc_h, GNUNET_NO);
438 GNUNET_SERVICE_client_continue (tc_h->client);
443 * New queue became available. Check message.
445 * @param cls the client
446 * @param aqm the send message that was sent
449 check_add_queue_message (void *cls,
450 const struct GNUNET_TRANSPORT_AddQueueMessage *aqm)
452 GNUNET_MQ_check_zero_termination (aqm);
458 * @brief Handle new queue
460 * Store context and call client callback.
462 * @param cls Closure - communicator handle
463 * @param msg Message struct
466 handle_add_queue_message (void *cls,
467 const struct GNUNET_TRANSPORT_AddQueueMessage *msg)
469 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
470 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *tc_queue;
472 tc_queue = tc_h->queue_head;
473 if (NULL != tc_queue)
475 while (tc_queue->qid != msg->qid)
477 tc_queue = tc_queue->next;
483 GNUNET_new (struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue);
484 tc_queue->tc_h = tc_h;
485 tc_queue->qid = msg->qid;
486 tc_queue->peer_id = msg->receiver;
487 GNUNET_CONTAINER_DLL_insert (tc_h->queue_head, tc_h->queue_tail, tc_queue);
489 GNUNET_assert (tc_queue->qid == msg->qid);
490 GNUNET_assert (0 == GNUNET_memcmp (&tc_queue->peer_id, &msg->receiver));
491 tc_queue->nt = msg->nt;
492 tc_queue->mtu = msg->mtu;
493 tc_queue->cs = msg->cs;
494 if (NULL != tc_h->add_queue_cb)
496 tc_h->add_queue_cb (tc_h->cb_cls, tc_h, tc_queue);
498 GNUNET_SERVICE_client_continue (tc_h->client);
503 * @brief Shut down the service
505 * @param cls Closure - Handle to the service
508 shutdown_service (void *cls)
510 struct GNUNET_SERVICE_Handle *h = cls;
512 GNUNET_SERVICE_stop (h);
517 * @brief Callback called when new Client (Communicator) connects
519 * @param cls Closure - TransporCommmunicator Handle
520 * @param client Client
521 * @param mq Messagequeue
523 * @return TransportCommunicator Handle
526 connect_cb (void *cls,
527 struct GNUNET_SERVICE_Client *client,
528 struct GNUNET_MQ_Handle *mq)
530 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
531 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *tc_queue_iter;
533 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client connected.\n");
534 tc_h->client = client;
537 if (NULL == tc_h->queue_head)
539 /* Iterate over queues. They are yet to be opened. Request opening. */
540 while (NULL != (tc_queue_iter = tc_h->queue_head))
542 if (NULL == tc_queue_iter->open_queue_env)
544 /* Send the previously created mq envelope to request the creation of the
546 GNUNET_MQ_send (tc_h->c_mq, tc_queue_iter->open_queue_env);
547 tc_queue_iter->open_queue_env = NULL;
554 * @brief Callback called when Client disconnects
556 * @param cls Closure - TransportCommunicator Handle
557 * @param client Client
558 * @param internal_cls TransporCommmunicator Handle
561 disconnect_cb (void *cls,
562 struct GNUNET_SERVICE_Client *client,
565 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h = cls;
567 LOG (GNUNET_ERROR_TYPE_DEBUG, "Client disconnected.\n");
573 * @brief Start the communicator part of the transport service
575 * @param communicator_available Callback to be called when a new communicator
577 * @param cfg Configuration
580 transport_communicator_start (
581 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h)
583 struct GNUNET_MQ_MessageHandler mh[] = {
584 GNUNET_MQ_hd_var_size (communicator_available,
585 GNUNET_MESSAGE_TYPE_TRANSPORT_NEW_COMMUNICATOR,
586 struct GNUNET_TRANSPORT_CommunicatorAvailableMessage,
588 // GNUNET_MQ_hd_var_size (communicator_backchannel,
589 // GNUNET_MESSAGE_TYPE_TRANSPORT_COMMUNICATOR_BACKCHANNEL,
590 // struct GNUNET_TRANSPORT_CommunicatorBackchannel,
592 GNUNET_MQ_hd_var_size (add_address,
593 GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_ADDRESS,
594 struct GNUNET_TRANSPORT_AddAddressMessage,
596 // GNUNET_MQ_hd_fixed_size (del_address,
597 // GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_ADDRESS,
598 // struct GNUNET_TRANSPORT_DelAddressMessage,
600 GNUNET_MQ_hd_var_size (incoming_msg,
601 GNUNET_MESSAGE_TYPE_TRANSPORT_INCOMING_MSG,
602 struct GNUNET_TRANSPORT_IncomingMessage,
604 GNUNET_MQ_hd_fixed_size (queue_create_ok,
605 GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_OK,
606 struct GNUNET_TRANSPORT_CreateQueueResponse,
608 GNUNET_MQ_hd_fixed_size (queue_create_fail,
609 GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_FAIL,
610 struct GNUNET_TRANSPORT_CreateQueueResponse,
612 GNUNET_MQ_hd_var_size (add_queue_message,
613 GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_SETUP,
614 struct GNUNET_TRANSPORT_AddQueueMessage,
616 // GNUNET_MQ_hd_fixed_size (del_queue_message,
617 // GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_TEARDOWN,
618 // struct GNUNET_TRANSPORT_DelQueueMessage,
620 // GNUNET_MQ_hd_fixed_size (send_message_ack,
621 // GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG_ACK,
622 // struct GNUNET_TRANSPORT_SendMessageToAck,
625 struct GNUNET_SERVICE_Handle *h;
627 h = GNUNET_SERVICE_start ("transport",
634 LOG (GNUNET_ERROR_TYPE_ERROR, "Failed starting service!\n");
637 LOG (GNUNET_ERROR_TYPE_DEBUG, "Started service\n");
638 /* TODO */ GNUNET_SCHEDULER_add_shutdown (&shutdown_service, h);
644 * @brief Task run at shutdown to kill communicator and clean up
646 * @param cls Closure - Process of communicator
649 shutdown_communicator (void *cls)
651 struct GNUNET_OS_Process *proc = cls;
653 if (GNUNET_OK != GNUNET_OS_process_kill (proc, SIGTERM))
655 LOG (GNUNET_ERROR_TYPE_WARNING,
656 "Error shutting down communicator with SIGERM, trying SIGKILL\n");
657 if (GNUNET_OK != GNUNET_OS_process_kill (proc, SIGKILL))
659 LOG (GNUNET_ERROR_TYPE_ERROR,
660 "Error shutting down communicator with SIGERM and SIGKILL\n");
663 GNUNET_OS_process_destroy (proc);
668 * @brief Start the communicator
670 * @param cfgname Name of the communicator
674 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h,
675 const char *binary_name)
679 LOG (GNUNET_ERROR_TYPE_DEBUG, "communicator_start\n");
680 binary = GNUNET_OS_get_libexec_binary_path (binary_name);
681 tc_h->c_proc = GNUNET_OS_start_process (GNUNET_YES,
682 GNUNET_OS_INHERIT_STD_OUT_AND_ERR,
691 if (NULL == tc_h->c_proc)
693 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Failed to start communicator!");
696 LOG (GNUNET_ERROR_TYPE_INFO, "started communicator\n");
697 GNUNET_free (binary);
698 /* TODO */ GNUNET_SCHEDULER_add_shutdown (&shutdown_communicator,
704 * @brief Start communicator part of transport service and communicator
706 * @param service_name Name of the service
707 * @param cfg Configuration handle
708 * @param communicator_available_cb Callback that is called when a new
709 * @param add_address_cb Callback that is called when a new
710 * communicator becomes available
711 * @param cb_cls Closure to @a communicator_available_cb and @a
713 * @return Handle to the communicator duo
715 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *
716 GNUNET_TRANSPORT_TESTING_transport_communicator_service_start (
717 const char *service_name,
718 const char *binary_name,
719 const char *cfg_filename,
720 GNUNET_TRANSPORT_TESTING_CommunicatorAvailableCallback
721 communicator_available_cb,
722 GNUNET_TRANSPORT_TESTING_AddAddressCallback add_address_cb,
723 GNUNET_TRANSPORT_TESTING_QueueCreateReplyCallback queue_create_reply_cb,
724 GNUNET_TRANSPORT_TESTING_AddQueueCallback add_queue_cb,
725 GNUNET_TRANSPORT_TESTING_IncomingMessageCallback incoming_message_cb,
728 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h;
731 GNUNET_new (struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle);
732 tc_h->cfg_filename = GNUNET_strdup (cfg_filename);
733 tc_h->cfg = GNUNET_CONFIGURATION_create ();
734 if ((GNUNET_SYSERR == GNUNET_CONFIGURATION_load (tc_h->cfg, cfg_filename)))
736 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
737 _ ("Malformed configuration file `%s', exit ...\n"),
739 GNUNET_free (tc_h->cfg_filename);
740 GNUNET_CONFIGURATION_destroy (tc_h->cfg);
744 tc_h->communicator_available_cb = communicator_available_cb;
745 tc_h->add_address_cb = add_address_cb;
746 tc_h->queue_create_reply_cb = queue_create_reply_cb;
747 tc_h->add_queue_cb = add_queue_cb;
748 tc_h->incoming_msg_cb = incoming_message_cb;
749 tc_h->cb_cls = cb_cls;
751 /* Start communicator part of service */
752 transport_communicator_start (tc_h);
754 /* Schedule start communicator */
755 communicator_start (tc_h,
762 * @brief Instruct communicator to open a queue
764 * @param tc_h Handle to communicator which shall open queue
765 * @param peer_id Towards which peer
766 * @param address For which address
769 GNUNET_TRANSPORT_TESTING_transport_communicator_open_queue (
770 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorHandle *tc_h,
771 const struct GNUNET_PeerIdentity *peer_id,
774 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *tc_queue;
775 static uint32_t idgen;
777 struct GNUNET_TRANSPORT_CreateQueue *msg;
778 struct GNUNET_MQ_Envelope *env;
782 GNUNET_new (struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue);
783 tc_queue->tc_h = tc_h;
784 prefix = GNUNET_HELLO_address_to_prefix (address);
787 GNUNET_break (0); /* We got an invalid address!? */
788 GNUNET_free (tc_queue);
791 GNUNET_free (prefix);
792 alen = strlen (address) + 1;
794 GNUNET_MQ_msg_extra (msg, alen, GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE);
795 msg->request_id = htonl (idgen++);
796 tc_queue->qid = msg->request_id;
797 msg->receiver = *peer_id;
798 tc_queue->peer_id = *peer_id;
799 memcpy (&msg[1], address, alen);
800 if (NULL != tc_h->c_mq)
802 GNUNET_MQ_send (tc_h->c_mq, env);
806 tc_queue->open_queue_env = env;
808 GNUNET_CONTAINER_DLL_insert (tc_h->queue_head, tc_h->queue_tail, tc_queue);
813 * @brief Instruct communicator to send data
815 * @param tc_queue The queue to use for sending
816 * @param payload Data to send
817 * @param payload_size Size of the payload
819 * @return Handle to the transmission
821 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorTransmission *
822 GNUNET_TRANSPORT_TESTING_transport_communicator_send
823 (struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorQueue *tc_queue,
827 struct GNUNET_TRANSPORT_TESTING_TransportCommunicatorTransmission *tc_t;
828 struct GNUNET_MessageHeader *mh;
829 struct GNUNET_TRANSPORT_SendMessageTo *msg;
830 struct GNUNET_MQ_Envelope *env;
833 inbox_size = sizeof(struct GNUNET_MessageHeader) + payload_size;
834 mh = GNUNET_malloc (inbox_size);
835 mh->size = htons (inbox_size);
836 mh->type = GNUNET_MESSAGE_TYPE_DUMMY;
840 env = GNUNET_MQ_msg_extra (msg,
842 GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG);
843 msg->qid = htonl (tc_queue->qid);
844 msg->mid = tc_queue->mid++;
845 msg->receiver = tc_queue->peer_id;
846 memcpy (&msg[1], mh, inbox_size);
848 GNUNET_MQ_send (tc_queue->tc_h->c_mq, env);