2 This file is part of GNUnet
3 (C) 2008--2012 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.
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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 testbed/testbed_api.c
23 * @brief API for accessing the GNUnet testing service.
24 * This library is supposed to make it easier to write
25 * testcases and script large-scale benchmarks.
26 * @author Christian Grothoff
27 * @author Sree Harsha Totakura
32 #include "gnunet_testbed_service.h"
33 #include "gnunet_core_service.h"
34 #include "gnunet_constants.h"
35 #include "gnunet_transport_service.h"
36 #include "gnunet_hello_lib.h"
40 #include "testbed_api.h"
41 #include "testbed_api_hosts.h"
42 #include "testbed_api_peers.h"
43 #include "testbed_api_operations.h"
46 * Generic logging shorthand
48 #define LOG(kind, ...) \
49 GNUNET_log_from (kind, "testbed-api", __VA_ARGS__);
54 #define LOG_DEBUG(...) \
55 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__);
58 * Relative time seconds shorthand
60 #define TIME_REL_SECS(sec) \
61 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, sec)
65 * Default server message sending retry timeout
67 #define TIMEOUT_REL TIME_REL_SECS(1)
71 * The message queue for sending messages to the controller service
76 * The message to be sent
78 struct GNUNET_MessageHeader *msg;
81 * next pointer for DLL
83 struct MessageQueue *next;
86 * prev pointer for DLL
88 struct MessageQueue *prev;
93 * Structure for a controller link
98 * The next ptr for DLL
100 struct ControllerLink *next;
103 * The prev ptr for DLL
105 struct ControllerLink *prev;
108 * The host which will be referred in the peer start request. This is the
109 * host where the peer should be started
111 struct GNUNET_TESTBED_Host *delegated_host;
114 * The host which will contacted to delegate the peer start request
116 struct GNUNET_TESTBED_Host *slave_host;
119 * The configuration to be used to connect to slave host
121 const struct GNUNET_CONFIGURATION_Handle *slave_cfg;
124 * GNUNET_YES if the slave should be started (and stopped) by us; GNUNET_NO
125 * if we are just allowed to use the slave via TCP/IP
132 * handle for host registration
134 struct GNUNET_TESTBED_HostRegistrationHandle
137 * The host being registered
139 struct GNUNET_TESTBED_Host *host;
142 * The controller at which this host is being registered
144 struct GNUNET_TESTBED_Controller *c;
147 * The Registartion completion callback
149 GNUNET_TESTBED_HostRegistrationCompletion cc;
152 * The closure for above callback
159 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM message from
160 * controller (testbed service)
162 * @param c the controller handler
163 * @param msg message received
164 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
168 handle_addhostconfirm (struct GNUNET_TESTBED_Controller *c,
169 const struct GNUNET_TESTBED_HostConfirmedMessage *msg)
171 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
180 if (GNUNET_TESTBED_host_get_id_ (rh->host) != ntohl (msg->host_id))
182 LOG_DEBUG ("Mismatch in host id's %u, %u of host confirm msg\n",
183 GNUNET_TESTBED_host_get_id_ (rh->host), ntohl (msg->host_id));
187 msg_size = ntohs (msg->header.size);
188 if (sizeof (struct GNUNET_TESTBED_HostConfirmedMessage) == msg_size)
190 LOG_DEBUG ("Host %u successfully registered\n", ntohl (msg->host_id));
191 GNUNET_TESTBED_mark_host_registered_at_ (rh->host, c);
192 rh->cc (rh->cc_cls, NULL);
196 /* We have an error message */
197 emsg = (char *) &msg[1];
198 if ('\0' != emsg[msg_size -
199 sizeof (struct GNUNET_TESTBED_HostConfirmedMessage)])
205 LOG (GNUNET_ERROR_TYPE_ERROR, _("Adding host %u failed with error: %s\n"),
206 ntohl (msg->host_id), emsg);
207 rh->cc (rh->cc_cls, emsg);
214 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM message from
215 * controller (testbed service)
217 * @param c the controller handler
218 * @param msg message received
219 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
223 handle_opsuccess (struct GNUNET_TESTBED_Controller *c,
225 GNUNET_TESTBED_GenericOperationSuccessEventMessage *msg)
227 struct OperationContext *opc;
228 struct GNUNET_TESTBED_EventInformation *event;
231 op_id = GNUNET_ntohll (msg->operation_id);
232 LOG_DEBUG ("Operation %ul successful\n", op_id);
233 for (opc = c->ocq_head; NULL != opc; opc = opc->next)
235 if (opc->id == op_id)
240 LOG_DEBUG ("Operation not found\n");
244 if (0 != (c->event_mask & (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED)))
245 event = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_EventInformation));
247 event->type = GNUNET_TESTBED_ET_OPERATION_FINISHED;
250 case OP_PEER_DESTROY:
252 struct GNUNET_TESTBED_Peer *peer;
256 event->details.operation_finished.operation = opc->op;
257 event->details.operation_finished.op_cls = NULL;
258 event->details.operation_finished.emsg = NULL;
259 event->details.operation_finished.pit = GNUNET_TESTBED_PIT_GENERIC;
260 event->details.operation_finished.op_result.generic = NULL;
274 c->cc (c->cc_cls, event);
282 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS message from
283 * controller (testbed service)
285 * @param c the controller handler
286 * @param msg message received
287 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
291 handle_peer_create_success (struct GNUNET_TESTBED_Controller *c,
293 GNUNET_TESTBED_PeerCreateSuccessEventMessage *msg)
295 struct OperationContext *opc;
296 struct PeerCreateData *data;
297 struct GNUNET_TESTBED_Peer *peer;
298 GNUNET_TESTBED_PeerCreateCallback cb;
302 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage)
303 == ntohs (msg->header.size));
304 op_id = GNUNET_ntohll (msg->operation_id);
305 for (opc = c->ocq_head; NULL != opc; opc = opc->next)
307 if (opc->id == op_id)
312 LOG_DEBUG ("Operation context for PeerCreateSuccessEvent not found\n");
315 GNUNET_assert (OP_PEER_CREATE == opc->type);
316 GNUNET_assert (NULL != opc->data);
318 GNUNET_assert (NULL != data->peer);
320 GNUNET_assert (peer->unique_id == ntohl (msg->peer_id));
321 peer->state = PS_CREATED;
325 cb (cls, peer, NULL);
331 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT message from
332 * controller (testbed service)
334 * @param c the controller handler
335 * @param msg message received
336 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
340 handle_peer_event (struct GNUNET_TESTBED_Controller *c,
341 const struct GNUNET_TESTBED_PeerEventMessage *msg)
343 struct GNUNET_TESTBED_Operation *op;
344 struct GNUNET_TESTBED_Peer *peer;
345 struct GNUNET_TESTBED_EventInformation event;
348 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerEventMessage)
349 == ntohs (msg->header.size));
350 op_id = GNUNET_ntohll (msg->operation_id);
351 for (op = c->op_head; NULL != op; op = op->next)
353 if (op->operation_id == op_id)
358 LOG_DEBUG ("Operation not found\n");
361 GNUNET_assert ((OP_PEER_START == op->type) || (OP_PEER_STOP == op->type));
363 GNUNET_assert (NULL != peer);
364 event.type = (enum GNUNET_TESTBED_EventType) ntohl (msg->event_type);
367 case GNUNET_TESTBED_ET_PEER_START:
368 peer->state = PS_STARTED;
369 event.details.peer_start.host = peer->host;
370 event.details.peer_start.peer = peer;
372 case GNUNET_TESTBED_ET_PEER_STOP:
373 peer->state = PS_STOPPED;
374 event.details.peer_stop.peer = peer;
377 GNUNET_assert (0); /* We should never reach this state */
379 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
380 if (0 != ((GNUNET_TESTBED_ET_PEER_START | GNUNET_TESTBED_ET_PEER_STOP)
384 c->cc (c->cc_cls, &event);
391 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG message from
392 * controller (testbed service)
394 * @param c the controller handler
395 * @param msg message received
396 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
400 handle_peer_config (struct GNUNET_TESTBED_Controller *c,
401 const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *msg)
403 struct GNUNET_TESTBED_Operation *op;
404 struct GNUNET_TESTBED_Peer *peer;
405 struct PeerInfoData *data;
406 struct PeerInfoData2 *response_data;
407 struct GNUNET_TESTBED_EventInformation info;
410 op_id = GNUNET_ntohll (msg->operation_id);
411 for (op = c->op_head; NULL != op; op = op->next)
413 if (op->operation_id == op_id)
418 LOG_DEBUG ("Operation not found");
422 GNUNET_assert (NULL != data);
424 GNUNET_assert (NULL != peer);
425 GNUNET_assert (ntohl (msg->peer_id) == peer->unique_id);
426 if (0 == (c->event_mask & (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED)))
428 LOG_DEBUG ("Skipping operation callback as flag not set\n");
429 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
432 response_data = GNUNET_malloc (sizeof (struct PeerInfoData2));
433 response_data->pit = data->pit;
435 info.type = GNUNET_TESTBED_ET_OPERATION_FINISHED;
436 info.details.operation_finished.operation = op;
437 info.details.operation_finished.op_cls = NULL;
438 info.details.operation_finished.emsg = NULL;
439 info.details.operation_finished.pit = response_data->pit;
440 switch (response_data->pit)
442 case GNUNET_TESTBED_PIT_IDENTITY:
444 struct GNUNET_PeerIdentity *peer_identity;
446 peer_identity = GNUNET_malloc (sizeof (struct GNUNET_PeerIdentity));
447 (void) memcpy (peer_identity, &msg->peer_identity,
448 sizeof (struct GNUNET_PeerIdentity));
449 response_data->details.peer_identity = peer_identity;
450 info.details.operation_finished.op_result.pid = peer_identity;
453 case GNUNET_TESTBED_PIT_CONFIGURATION:
455 struct GNUNET_CONFIGURATION_Handle *cfg;
461 config_size = (uLong) ntohs (msg->config_size);
462 config = GNUNET_malloc (config_size);
463 msize = ntohs (msg->header.size);
464 msize -= sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage);
465 if (Z_OK != (ret = uncompress ((Bytef *) config, &config_size,
466 (const Bytef *) &msg[1], (uLong) msize)))
468 cfg = GNUNET_CONFIGURATION_create ();
469 GNUNET_assert (GNUNET_OK ==
470 GNUNET_CONFIGURATION_deserialize (cfg, config,
471 (size_t) config_size,
473 GNUNET_free (config);
474 response_data->details.cfg = cfg;
475 info.details.operation_finished.op_result.cfg = cfg;
478 case GNUNET_TESTBED_PIT_GENERIC:
479 GNUNET_assert (0); /* never reach here */
482 op->data = response_data;
483 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
484 c->cc (c->cc_cls, &info);
490 * Handler for messages from controller (testbed service)
492 * @param cls the controller handler
493 * @param msg message received, NULL on timeout or fatal error
496 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
498 struct GNUNET_TESTBED_Controller *c = cls;
502 c->in_receive = GNUNET_NO;
503 /* FIXME: Add checks for message integrity */
506 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
510 msize = ntohs (msg->size);
511 switch (ntohs (msg->type))
513 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
514 GNUNET_assert (msize >= sizeof (struct
515 GNUNET_TESTBED_HostConfirmedMessage));
517 handle_addhostconfirm (c, (const struct GNUNET_TESTBED_HostConfirmedMessage *) msg);
519 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
521 (msize == sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage));
523 handle_opsuccess (c, (const struct
524 GNUNET_TESTBED_GenericOperationSuccessEventMessage
527 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
528 GNUNET_assert (msize ==
529 sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
531 handle_peer_create_success
532 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
534 case GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT:
535 GNUNET_assert (msize == sizeof (struct GNUNET_TESTBED_PeerEventMessage));
537 handle_peer_event (c, (const struct GNUNET_TESTBED_PeerEventMessage *) msg);
540 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG:
541 GNUNET_assert (msize >=
542 sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage));
545 (c, (const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *)
551 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
553 c->in_receive = GNUNET_YES;
554 GNUNET_CLIENT_receive (c->client, &message_handler, c,
555 GNUNET_TIME_UNIT_FOREVER_REL);
561 * Function called to notify a client about the connection begin ready to queue
562 * more data. "buf" will be NULL and "size" zero if the connection was closed
563 * for writing in the meantime.
566 * @param size number of bytes available in buf
567 * @param buf where the callee should write the message
568 * @return number of bytes written to buf
571 transmit_ready_notify (void *cls, size_t size, void *buf)
573 struct GNUNET_TESTBED_Controller *c = cls;
574 struct MessageQueue *mq_entry;
577 mq_entry = c->mq_head;
578 GNUNET_assert (NULL != mq_entry);
579 if ((0 == size) && (NULL == buf)) /* Timeout */
581 LOG_DEBUG ("Message sending timed out -- retrying\n");
583 GNUNET_CLIENT_notify_transmit_ready (c->client,
584 ntohs (mq_entry->msg->size),
586 GNUNET_YES, &transmit_ready_notify,
590 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
591 size = ntohs (mq_entry->msg->size);
592 memcpy (buf, mq_entry->msg, size);
593 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
594 ntohs (mq_entry->msg->type), size);
595 GNUNET_free (mq_entry->msg);
596 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
597 GNUNET_free (mq_entry);
598 mq_entry = c->mq_head;
599 if (NULL != mq_entry)
601 GNUNET_CLIENT_notify_transmit_ready (c->client,
602 ntohs (mq_entry->msg->size),
604 GNUNET_YES, &transmit_ready_notify,
606 if (GNUNET_NO == c->in_receive)
608 c->in_receive = GNUNET_YES;
609 GNUNET_CLIENT_receive (c->client, &message_handler, c,
610 GNUNET_TIME_UNIT_FOREVER_REL);
617 * Queues a message in send queue for sending to the service
619 * @param controller the handle to the controller
620 * @param msg the message to queue
623 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
624 struct GNUNET_MessageHeader *msg)
626 struct MessageQueue *mq_entry;
630 type = ntohs (msg->type);
631 size = ntohs (msg->size);
632 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
633 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
634 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
636 LOG (GNUNET_ERROR_TYPE_DEBUG,
637 "Queueing message of type %u, size %u for sending\n", type,
639 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
641 if (NULL == controller->th)
643 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
645 GNUNET_YES, &transmit_ready_notify,
651 * Handle for controller process
653 struct GNUNET_TESTBED_ControllerProc
658 struct GNUNET_HELPER_Handle *helper;
661 * The host where the helper is run
663 struct GNUNET_TESTBED_Host *host;
666 * The controller error callback
668 GNUNET_TESTBED_ControllerStatusCallback cb;
671 * The closure for the above callback
676 * The send handle for the helper
678 struct GNUNET_HELPER_SendHandle *shandle;
681 * The message corresponding to send handle
683 struct GNUNET_MessageHeader *msg;
686 * The port number for ssh; used for helpers starting ssh
691 * The ssh destination string; used for helpers starting ssh
696 * The configuration of the running testbed service
698 struct GNUNET_CONFIGURATION_Handle *cfg;
704 * Functions with this signature are called whenever a
705 * complete message is received by the tokenizer.
707 * Do not call GNUNET_SERVER_mst_destroy in callback
710 * @param client identification of the client
711 * @param message the actual message
713 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
715 static int helper_mst (void *cls, void *client,
716 const struct GNUNET_MessageHeader *message)
718 struct GNUNET_TESTBED_ControllerProc *cp = cls;
719 const struct GNUNET_TESTBED_HelperReply *msg;
720 const char *hostname;
725 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
726 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
727 < ntohs (msg->header.size));
728 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
729 == ntohs (msg->header.type));
730 config_size = (uLongf) ntohs (msg->config_size);
731 xconfig_size = (uLongf) (ntohs (msg->header.size)
732 - sizeof (struct GNUNET_TESTBED_HelperReply));
733 config = GNUNET_malloc (config_size);
734 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
735 (const Bytef *) &msg[1], xconfig_size));
736 GNUNET_assert (NULL == cp->cfg);
737 cp->cfg = GNUNET_CONFIGURATION_create ();
738 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
739 config_size, GNUNET_NO));
740 GNUNET_free (config);
741 if ((NULL == cp->host) ||
742 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
743 hostname = "localhost";
744 /* Change the hostname so that we can connect to it */
745 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
747 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
753 * Continuation function from GNUNET_HELPER_send()
756 * @param result GNUNET_OK on success,
757 * GNUNET_NO if helper process died
758 * GNUNET_SYSERR during GNUNET_HELPER_stop
761 clear_msg (void *cls, int result)
763 struct GNUNET_TESTBED_ControllerProc *cp = cls;
765 GNUNET_assert (NULL != cp->shandle);
767 GNUNET_free (cp->msg);
772 * Callback that will be called when the helper process dies. This is not called
773 * when the helper process is stoped using GNUNET_HELPER_stop()
775 * @param cls the closure from GNUNET_HELPER_start()
778 helper_exp_cb (void *cls)
780 struct GNUNET_TESTBED_ControllerProc *cp = cls;
781 GNUNET_TESTBED_ControllerStatusCallback cb;
786 GNUNET_TESTBED_controller_stop (cp);
788 cb (cb_cls, NULL, GNUNET_SYSERR);
793 * Starts a controller process at the host. FIXME: add controller start callback
794 * with the configuration with which the controller is started
796 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
797 * host when starting testbed controller at host
798 * @param host the host where the controller has to be started; NULL for
800 * @param cfg template configuration to use for the remote controller; the
801 * remote controller will be started with a slightly modified
802 * configuration (port numbers, unix domain sockets and service home
803 * values are changed as per TESTING library on the remote host)
804 * @param cb function called when the controller is successfully started or
805 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
806 * called if cb is called with GNUNET_SYSERR as status. Will never be
807 * called in the same task as 'GNUNET_TESTBED_controller_start'
808 * (synchronous errors will be signalled by returning NULL). This
809 * parameter cannot be NULL.
810 * @param cls closure for above callbacks
811 * @return the controller process handle, NULL on errors
813 struct GNUNET_TESTBED_ControllerProc *
814 GNUNET_TESTBED_controller_start (const char *controller_ip,
815 struct GNUNET_TESTBED_Host *host,
816 const struct GNUNET_CONFIGURATION_Handle *cfg,
817 GNUNET_TESTBED_ControllerStatusCallback cb,
820 struct GNUNET_TESTBED_ControllerProc *cp;
821 struct GNUNET_TESTBED_HelperInit *msg;
823 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
824 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
826 char * const binary_argv[] = {
827 "gnunet-testbed-helper", NULL
830 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
831 &helper_mst, &helper_exp_cb, cp);
835 char *remote_args[6 + 1];
837 const char *username;
838 const char *hostname;
840 username = GNUNET_TESTBED_host_get_username_ (host);
841 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
842 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
843 if (NULL == username)
844 GNUNET_asprintf (&cp->dst, "%s", hostname);
846 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
848 remote_args[argp++] = "ssh";
849 remote_args[argp++] = "-p";
850 remote_args[argp++] = cp->port;
851 remote_args[argp++] = "-q";
852 remote_args[argp++] = cp->dst;
853 remote_args[argp++] = "gnunet-testbed-helper";
854 remote_args[argp++] = NULL;
855 GNUNET_assert (argp == 6 + 1);
856 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
857 &helper_mst, &helper_exp_cb, cp);
859 if (NULL == cp->helper)
861 GNUNET_free_non_null (cp->port);
862 GNUNET_free_non_null (cp->dst);
869 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
870 cp->msg = &msg->header;
871 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
873 if (NULL == cp->shandle)
876 GNUNET_TESTBED_controller_stop (cp);
884 * Stop the controller process (also will terminate all peers and controllers
885 * dependent on this controller). This function blocks until the testbed has
886 * been fully terminated (!).
888 * @param cproc the controller process handle
891 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc)
893 if (NULL != cproc->shandle)
894 GNUNET_HELPER_send_cancel (cproc->shandle);
895 GNUNET_HELPER_stop (cproc->helper);
896 if (NULL != cproc->cfg)
897 GNUNET_CONFIGURATION_destroy (cproc->cfg);
898 GNUNET_free_non_null (cproc->port);
899 GNUNET_free_non_null (cproc->dst);
905 * Start a controller process using the given configuration at the
908 * @param cfg configuration to use
909 * @param host host to run the controller on; This should be the same host if
910 * the controller was previously started with
911 * GNUNET_TESTBED_controller_start; NULL for localhost
912 * @param event_mask bit mask with set of events to call 'cc' for;
913 * or-ed values of "1LL" shifted by the
914 * respective 'enum GNUNET_TESTBED_EventType'
915 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
916 * @param cc controller callback to invoke on events
917 * @param cc_cls closure for cc
918 * @return handle to the controller
920 struct GNUNET_TESTBED_Controller *
921 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
922 struct GNUNET_TESTBED_Host *host,
924 GNUNET_TESTBED_ControllerCallback cc,
927 struct GNUNET_TESTBED_Controller *controller;
928 struct GNUNET_TESTBED_InitMessage *msg;
929 unsigned long long max_parallel_peer_create;
932 GNUNET_CONFIGURATION_get_value_number (cfg, "testbed",
933 "MAX_PARALLEL_PEER_CREATE",
934 &max_parallel_peer_create))
939 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
941 controller->cc_cls = cc_cls;
942 controller->event_mask = event_mask;
943 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
944 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
945 if (NULL == controller->client)
947 GNUNET_TESTBED_controller_disconnect (controller);
952 host = GNUNET_TESTBED_host_create_by_id_ (0);
955 LOG (GNUNET_ERROR_TYPE_WARNING,
956 "Treating NULL host as localhost. Multiple references to localhost "
957 "may break when localhost freed before calling disconnect \n");
958 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
962 controller->aux_host = GNUNET_YES;
965 GNUNET_assert (NULL != host);
966 controller->opq_peer_create =
967 GNUNET_TESTBED_operation_queue_create_ ((unsigned int)
968 max_parallel_peer_create);
969 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
970 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
971 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
972 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
973 msg->event_mask = GNUNET_htonll (controller->event_mask);
974 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *)
982 * Configure shared services at a controller. Using this function,
983 * you can specify that certain services (such as "resolver")
984 * should not be run for each peer but instead be shared
985 * across N peers on the specified host. This function
986 * must be called before any peers are created at the host.
988 * @param controller controller to configure
989 * @param service_name name of the service to share
990 * @param num_peers number of peers that should share one instance
991 * of the specified service (1 for no sharing is the default),
992 * use 0 to disable the service
995 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
996 const char *service_name,
999 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
1000 uint16_t service_name_size;
1003 service_name_size = strlen (service_name) + 1;
1004 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
1005 + service_name_size;
1006 msg = GNUNET_malloc (msg_size);
1007 msg->header.size = htons (msg_size);
1008 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
1009 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
1010 msg->num_peers = htonl (num_peers);
1011 memcpy (&msg[1], service_name, service_name_size);
1012 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1017 * disconnects from the controller.
1019 * @param controller handle to controller to stop
1022 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
1024 struct MessageQueue *mq_entry;
1026 if (NULL != controller->th)
1027 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
1028 /* Clear the message queue */
1029 while (NULL != (mq_entry = controller->mq_head))
1031 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
1032 controller->mq_tail,
1034 GNUNET_free (mq_entry->msg);
1035 GNUNET_free (mq_entry);
1037 if (NULL != controller->client)
1038 GNUNET_CLIENT_disconnect (controller->client);
1039 GNUNET_CONFIGURATION_destroy (controller->cfg);
1040 if (GNUNET_YES == controller->aux_host)
1041 GNUNET_TESTBED_host_destroy (controller->host);
1042 GNUNET_TESTBED_operation_queue_destroy_ (controller->opq_peer_create);
1043 GNUNET_free (controller);
1048 * Register a host with the controller
1050 * @param controller the controller handle
1051 * @param host the host to register
1052 * @param cc the completion callback to call to inform the status of
1053 * registration. After calling this callback the registration handle
1054 * will be invalid. Cannot be NULL.
1055 * @param cc_cls the closure for the cc
1056 * @return handle to the host registration which can be used to cancel the
1059 struct GNUNET_TESTBED_HostRegistrationHandle *
1060 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
1061 struct GNUNET_TESTBED_Host *host,
1062 GNUNET_TESTBED_HostRegistrationCompletion cc,
1065 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
1066 struct GNUNET_TESTBED_AddHostMessage *msg;
1067 const char *username;
1068 const char *hostname;
1070 uint16_t user_name_length;
1072 if (NULL != controller->rh)
1074 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
1075 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
1077 LOG (GNUNET_ERROR_TYPE_WARNING,
1078 "Host hostname: %s already registered\n",
1079 (NULL == hostname) ? "localhost" : hostname);
1082 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
1085 GNUNET_assert (NULL != cc);
1087 rh->cc_cls = cc_cls;
1088 controller->rh = rh;
1089 username = GNUNET_TESTBED_host_get_username_ (host);
1090 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
1091 user_name_length = 0;
1092 if (NULL != username)
1094 user_name_length = strlen (username) + 1;
1095 msg_size += user_name_length;
1097 /* FIXME: what happens when hostname is NULL? localhost */
1098 GNUNET_assert (NULL != hostname);
1099 msg_size += strlen (hostname) + 1;
1100 msg = GNUNET_malloc (msg_size);
1101 msg->header.size = htons (msg_size);
1102 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
1103 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
1104 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
1105 msg->user_name_length = htons (user_name_length);
1106 if (NULL != username)
1107 memcpy (&msg[1], username, user_name_length);
1108 strcpy (((void *) &msg[1]) + user_name_length, hostname);
1109 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1115 * Cancel the pending registration. Note that if the registration message is
1116 * already sent to the service the cancellation has only the effect that the
1117 * registration completion callback for the registration is never called.
1119 * @param handle the registration handle to cancel
1122 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
1125 if (handle != handle->c->rh)
1130 handle->c->rh = NULL;
1131 GNUNET_free (handle);
1136 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
1137 * serialized and compressed
1139 * @param master handle to the master controller who creates the association
1140 * @param delegated_host requests to which host should be delegated; cannot be NULL
1141 * @param slave_host which host is used to run the slave controller; use NULL to
1142 * make the master controller connect to the delegated host
1143 * @param sxcfg serialized and compressed configuration
1144 * @param sxcfg_size the size scfg
1145 * @param scfg_size the size of uncompressed serialized configuration
1146 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
1147 * be started by the master controller; GNUNET_NO if we are just
1148 * allowed to use the slave via TCP/IP
1151 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
1152 struct GNUNET_TESTBED_Host *delegated_host,
1153 struct GNUNET_TESTBED_Host *slave_host,
1159 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
1162 GNUNET_assert (GNUNET_YES ==
1163 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1164 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1165 GNUNET_assert (GNUNET_YES ==
1166 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1167 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1168 msg = GNUNET_malloc (msg_size);
1169 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
1170 msg->header.size = htons (msg_size);
1171 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
1172 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
1173 ((NULL != slave_host) ? slave_host : master->host));
1174 msg->config_size = htons ((uint16_t) scfg_size);
1175 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
1176 memcpy (&msg[1], sxcfg, sxcfg_size);
1177 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
1182 * Compresses given configuration using zlib compress
1184 * @param config the serialized configuration
1185 * @param size the size of config
1186 * @param xconfig will be set to the compressed configuration (memory is fresly
1188 * @return the size of the xconfig
1191 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1196 xsize = compressBound ((uLong) size);
1197 *xconfig = GNUNET_malloc (xsize);
1198 GNUNET_assert (Z_OK ==
1199 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1200 (const Bytef *) config, (uLongf) size,
1207 * Create a link from slave controller to delegated controller. Whenever the
1208 * master controller is asked to start a peer at the delegated controller the
1209 * request will be routed towards slave controller (if a route exists). The
1210 * slave controller will then route it to the delegated controller. The
1211 * configuration of the slave controller is given and to be used to either
1212 * create the slave controller or to connect to an existing slave controller
1213 * process. 'is_subordinate' specifies if the given slave controller should be
1214 * started and managed by the master controller, or if the slave already has a
1215 * master and this is just a secondary master that is also allowed to use the
1218 * @param master handle to the master controller who creates the association
1219 * @param delegated_host requests to which host should be delegated
1220 * @param slave_host which host is used to run the slave controller
1221 * @param slave_cfg configuration to use for the slave controller
1222 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1223 * by the master controller; GNUNET_NO if we are just
1224 * allowed to use the slave via TCP/IP
1227 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1228 struct GNUNET_TESTBED_Host *delegated_host,
1229 struct GNUNET_TESTBED_Host *slave_host,
1230 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1238 GNUNET_assert (GNUNET_YES ==
1239 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1240 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1241 GNUNET_assert (GNUNET_YES ==
1242 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1243 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1244 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1245 GNUNET_free (config);
1246 GNUNET_assert ((UINT16_MAX -
1247 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1248 >= cc_size); /* Configuration doesn't fit in 1 message */
1249 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1250 (const char *) cconfig,
1251 cc_size, config_size, is_subordinate);
1252 GNUNET_free (cconfig);
1257 * Ask the testbed controller to write the current overlay topology to
1258 * a file. Naturally, the file will only contain a snapshot as the
1259 * topology may evolve all the time.
1261 * @param controller overlay controller to inspect
1262 * @param filename name of the file the topology should
1266 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1267 const char *filename)
1274 * Creates a helper initialization message. Only for testing.
1276 * @param cname the ip address of the controlling host
1277 * @param cfg the configuration that has to used to start the testbed service
1279 * @return the initialization message
1281 struct GNUNET_TESTBED_HelperInit *
1282 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1283 const struct GNUNET_CONFIGURATION_Handle *cfg)
1285 struct GNUNET_TESTBED_HelperInit *msg;
1289 size_t xconfig_size;
1293 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1294 GNUNET_assert (NULL != config);
1296 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1297 GNUNET_free (config);
1298 cname_len = strlen (cname);
1299 msg_size = xconfig_size + cname_len + 1 +
1300 sizeof (struct GNUNET_TESTBED_HelperInit);
1301 msg = GNUNET_realloc (xconfig, msg_size);
1302 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1303 msg->header.size = htons (msg_size);
1304 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1305 msg->cname_size = htons (cname_len);
1306 msg->config_size = htons (config_size);
1307 (void) strcpy ((char *) &msg[1], cname);
1313 * Cancel a pending operation. Releases all resources
1314 * of the operation and will ensure that no event
1315 * is generated for the operation. Does NOT guarantee
1316 * that the operation will be fully undone (or that
1317 * nothing ever happened).
1319 * @param operation operation to cancel
1322 GNUNET_TESTBED_operation_cancel (struct GNUNET_TESTBED_Operation *operation)
1324 GNUNET_CONTAINER_DLL_remove (operation->controller->op_head,
1325 operation->controller->op_tail,
1327 GNUNET_TESTBED_operation_done (operation);
1332 * Signal that the information from an operation has been fully
1333 * processed. This function MUST be called for each event
1334 * of type 'operation_finished' to fully remove the operation
1335 * from the operation queue. After calling this function, the
1336 * 'op_result' becomes invalid (!).
1338 * @param operation operation to signal completion for
1341 GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation)
1343 switch (operation->type)
1345 case OP_PEER_CREATE:
1346 GNUNET_TESTBED_operation_release_ (operation);
1348 case OP_PEER_DESTROY:
1349 GNUNET_TESTBED_operation_release_ (operation);
1356 struct PeerInfoData2 *data;
1358 data = operation->data;
1361 case GNUNET_TESTBED_PIT_IDENTITY:
1362 GNUNET_free (data->details.peer_identity);
1364 case GNUNET_TESTBED_PIT_CONFIGURATION:
1365 GNUNET_CONFIGURATION_destroy (data->details.cfg);
1367 case GNUNET_TESTBED_PIT_GENERIC:
1368 GNUNET_assert (0); /* never reach here */
1372 GNUNET_free_non_null (operation->data);
1374 case OP_OVERLAY_CONNECT:
1375 GNUNET_free_non_null (operation->data);
1378 GNUNET_free (operation);
1382 /* end of testbed_api.c */