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.
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 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 GNUNET_TESTBED_Operation *op;
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 (op = c->op_head; NULL != op; op = op->next)
235 if (op->operation_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 PeerDestroyData *data;
256 event->details.operation_finished.operation = 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;
262 data = (struct PeerDestroyData *) op->data;
263 if (NULL != data->peer->details)
265 if (NULL != data->peer->details->cfg)
266 GNUNET_CONFIGURATION_destroy (data->peer->details->cfg);
269 GNUNET_free (data->peer);
278 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
282 c->cc (c->cc_cls, event);
290 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS message from
291 * controller (testbed service)
293 * @param c the controller handler
294 * @param msg message received
295 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
299 handle_peer_create_success (struct GNUNET_TESTBED_Controller *c,
301 GNUNET_TESTBED_PeerCreateSuccessEventMessage *msg)
303 struct OperationContext *opc;
304 struct PeerCreateData *data;
305 struct GNUNET_TESTBED_Peer *peer;
306 GNUNET_TESTBED_PeerCreateCallback cb;
310 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage)
311 == ntohs (msg->header.size));
312 op_id = GNUNET_ntohll (msg->operation_id);
313 for (opc = c->ocq_head; NULL != opc; opc = opc->next)
315 if (opc->id == op_id)
320 LOG_DEBUG ("Operation context for PeerCreateSuccessEvent not found\n");
323 GNUNET_assert (OP_PEER_CREATE == opc->type);
324 GNUNET_assert (NULL != opc->data);
326 GNUNET_assert (NULL != data->peer);
328 GNUNET_assert (peer->unique_id == ntohl (msg->peer_id));
329 peer->state = PS_CREATED;
333 cb (cls, peer, NULL);
339 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT message from
340 * controller (testbed service)
342 * @param c the controller handler
343 * @param msg message received
344 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
348 handle_peer_event (struct GNUNET_TESTBED_Controller *c,
349 const struct GNUNET_TESTBED_PeerEventMessage *msg)
351 struct GNUNET_TESTBED_Operation *op;
352 struct GNUNET_TESTBED_Peer *peer;
353 struct GNUNET_TESTBED_EventInformation event;
356 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerEventMessage)
357 == ntohs (msg->header.size));
358 op_id = GNUNET_ntohll (msg->operation_id);
359 for (op = c->op_head; NULL != op; op = op->next)
361 if (op->operation_id == op_id)
366 LOG_DEBUG ("Operation not found\n");
369 GNUNET_assert ((OP_PEER_START == op->type) || (OP_PEER_STOP == op->type));
371 GNUNET_assert (NULL != peer);
372 event.type = (enum GNUNET_TESTBED_EventType) ntohl (msg->event_type);
375 case GNUNET_TESTBED_ET_PEER_START:
376 peer->state = PS_STARTED;
377 event.details.peer_start.host = peer->host;
378 event.details.peer_start.peer = peer;
380 case GNUNET_TESTBED_ET_PEER_STOP:
381 peer->state = PS_STOPPED;
382 event.details.peer_stop.peer = peer;
385 GNUNET_assert (0); /* We should never reach this state */
387 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
388 if (0 != ((GNUNET_TESTBED_ET_PEER_START | GNUNET_TESTBED_ET_PEER_STOP)
392 c->cc (c->cc_cls, &event);
399 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG message from
400 * controller (testbed service)
402 * @param c the controller handler
403 * @param msg message received
404 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
408 handle_peer_config (struct GNUNET_TESTBED_Controller *c,
409 const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *msg)
411 struct GNUNET_TESTBED_Operation *op;
412 struct GNUNET_TESTBED_Peer *peer;
413 struct PeerInfoData *data;
414 struct PeerInfoData2 *response_data;
415 struct GNUNET_TESTBED_EventInformation info;
418 op_id = GNUNET_ntohll (msg->operation_id);
419 for (op = c->op_head; NULL != op; op = op->next)
421 if (op->operation_id == op_id)
426 LOG_DEBUG ("Operation not found");
430 GNUNET_assert (NULL != data);
432 GNUNET_assert (NULL != peer);
433 GNUNET_assert (ntohl (msg->peer_id) == peer->unique_id);
434 if (0 == (c->event_mask & (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED)))
436 LOG_DEBUG ("Skipping operation callback as flag not set\n");
437 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
440 response_data = GNUNET_malloc (sizeof (struct PeerInfoData2));
441 response_data->pit = data->pit;
443 info.type = GNUNET_TESTBED_ET_OPERATION_FINISHED;
444 info.details.operation_finished.operation = op;
445 info.details.operation_finished.op_cls = NULL;
446 info.details.operation_finished.emsg = NULL;
447 info.details.operation_finished.pit = response_data->pit;
448 switch (response_data->pit)
450 case GNUNET_TESTBED_PIT_IDENTITY:
452 struct GNUNET_PeerIdentity *peer_identity;
454 peer_identity = GNUNET_malloc (sizeof (struct GNUNET_PeerIdentity));
455 (void) memcpy (peer_identity, &msg->peer_identity,
456 sizeof (struct GNUNET_PeerIdentity));
457 response_data->details.peer_identity = peer_identity;
458 info.details.operation_finished.op_result.pid = peer_identity;
461 case GNUNET_TESTBED_PIT_CONFIGURATION:
463 struct GNUNET_CONFIGURATION_Handle *cfg;
469 config_size = (uLong) ntohs (msg->config_size);
470 config = GNUNET_malloc (config_size);
471 msize = ntohs (msg->header.size);
472 msize -= sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage);
473 if (Z_OK != (ret = uncompress ((Bytef *) config, &config_size,
474 (const Bytef *) &msg[1], (uLong) msize)))
476 cfg = GNUNET_CONFIGURATION_create ();
477 GNUNET_assert (GNUNET_OK ==
478 GNUNET_CONFIGURATION_deserialize (cfg, config,
479 (size_t) config_size,
481 GNUNET_free (config);
482 response_data->details.cfg = cfg;
483 info.details.operation_finished.op_result.cfg = cfg;
486 case GNUNET_TESTBED_PIT_GENERIC:
487 GNUNET_assert (0); /* never reach here */
490 op->data = response_data;
491 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
492 c->cc (c->cc_cls, &info);
498 * Handler for messages from controller (testbed service)
500 * @param cls the controller handler
501 * @param msg message received, NULL on timeout or fatal error
504 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
506 struct GNUNET_TESTBED_Controller *c = cls;
510 c->in_receive = GNUNET_NO;
511 /* FIXME: Add checks for message integrity */
514 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
518 msize = ntohs (msg->size);
519 switch (ntohs (msg->type))
521 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
522 GNUNET_assert (msize >= sizeof (struct
523 GNUNET_TESTBED_HostConfirmedMessage));
525 handle_addhostconfirm (c, (const struct GNUNET_TESTBED_HostConfirmedMessage *) msg);
527 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
529 (msize == sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage));
531 handle_opsuccess (c, (const struct
532 GNUNET_TESTBED_GenericOperationSuccessEventMessage
535 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
536 GNUNET_assert (msize ==
537 sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
539 handle_peer_create_success
540 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
542 case GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT:
543 GNUNET_assert (msize == sizeof (struct GNUNET_TESTBED_PeerEventMessage));
545 handle_peer_event (c, (const struct GNUNET_TESTBED_PeerEventMessage *) msg);
548 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG:
549 GNUNET_assert (msize >=
550 sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage));
553 (c, (const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *)
559 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
561 c->in_receive = GNUNET_YES;
562 GNUNET_CLIENT_receive (c->client, &message_handler, c,
563 GNUNET_TIME_UNIT_FOREVER_REL);
569 * Function called to notify a client about the connection begin ready to queue
570 * more data. "buf" will be NULL and "size" zero if the connection was closed
571 * for writing in the meantime.
574 * @param size number of bytes available in buf
575 * @param buf where the callee should write the message
576 * @return number of bytes written to buf
579 transmit_ready_notify (void *cls, size_t size, void *buf)
581 struct GNUNET_TESTBED_Controller *c = cls;
582 struct MessageQueue *mq_entry;
585 mq_entry = c->mq_head;
586 GNUNET_assert (NULL != mq_entry);
587 if ((0 == size) && (NULL == buf)) /* Timeout */
589 LOG_DEBUG ("Message sending timed out -- retrying\n");
591 GNUNET_CLIENT_notify_transmit_ready (c->client,
592 ntohs (mq_entry->msg->size),
594 GNUNET_YES, &transmit_ready_notify,
598 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
599 size = ntohs (mq_entry->msg->size);
600 memcpy (buf, mq_entry->msg, size);
601 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
602 ntohs (mq_entry->msg->type), size);
603 GNUNET_free (mq_entry->msg);
604 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
605 GNUNET_free (mq_entry);
606 mq_entry = c->mq_head;
607 if (NULL != mq_entry)
609 GNUNET_CLIENT_notify_transmit_ready (c->client,
610 ntohs (mq_entry->msg->size),
612 GNUNET_YES, &transmit_ready_notify,
614 if (GNUNET_NO == c->in_receive)
616 c->in_receive = GNUNET_YES;
617 GNUNET_CLIENT_receive (c->client, &message_handler, c,
618 GNUNET_TIME_UNIT_FOREVER_REL);
625 * Queues a message in send queue for sending to the service
627 * @param controller the handle to the controller
628 * @param msg the message to queue
631 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
632 struct GNUNET_MessageHeader *msg)
634 struct MessageQueue *mq_entry;
638 type = ntohs (msg->type);
639 size = ntohs (msg->size);
640 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
641 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
642 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
644 LOG (GNUNET_ERROR_TYPE_DEBUG,
645 "Queueing message of type %u, size %u for sending\n", type,
647 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
649 if (NULL == controller->th)
651 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
653 GNUNET_YES, &transmit_ready_notify,
659 * Handle for controller process
661 struct GNUNET_TESTBED_ControllerProc
666 struct GNUNET_HELPER_Handle *helper;
669 * The host where the helper is run
671 struct GNUNET_TESTBED_Host *host;
674 * The controller error callback
676 GNUNET_TESTBED_ControllerStatusCallback cb;
679 * The closure for the above callback
684 * The send handle for the helper
686 struct GNUNET_HELPER_SendHandle *shandle;
689 * The message corresponding to send handle
691 struct GNUNET_MessageHeader *msg;
694 * The port number for ssh; used for helpers starting ssh
699 * The ssh destination string; used for helpers starting ssh
704 * The configuration of the running testbed service
706 struct GNUNET_CONFIGURATION_Handle *cfg;
712 * Functions with this signature are called whenever a
713 * complete message is received by the tokenizer.
715 * Do not call GNUNET_SERVER_mst_destroy in callback
718 * @param client identification of the client
719 * @param message the actual message
721 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
723 static int helper_mst (void *cls, void *client,
724 const struct GNUNET_MessageHeader *message)
726 struct GNUNET_TESTBED_ControllerProc *cp = cls;
727 const struct GNUNET_TESTBED_HelperReply *msg;
728 const char *hostname;
733 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
734 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
735 < ntohs (msg->header.size));
736 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
737 == ntohs (msg->header.type));
738 config_size = (uLongf) ntohs (msg->config_size);
739 xconfig_size = (uLongf) (ntohs (msg->header.size)
740 - sizeof (struct GNUNET_TESTBED_HelperReply));
741 config = GNUNET_malloc (config_size);
742 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
743 (const Bytef *) &msg[1], xconfig_size));
744 GNUNET_assert (NULL == cp->cfg);
745 cp->cfg = GNUNET_CONFIGURATION_create ();
746 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
747 config_size, GNUNET_NO));
748 GNUNET_free (config);
749 if ((NULL == cp->host) ||
750 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
751 hostname = "localhost";
752 /* Change the hostname so that we can connect to it */
753 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
755 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
761 * Continuation function from GNUNET_HELPER_send()
764 * @param result GNUNET_OK on success,
765 * GNUNET_NO if helper process died
766 * GNUNET_SYSERR during GNUNET_HELPER_stop
769 clear_msg (void *cls, int result)
771 struct GNUNET_TESTBED_ControllerProc *cp = cls;
773 GNUNET_assert (NULL != cp->shandle);
775 GNUNET_free (cp->msg);
780 * Callback that will be called when the helper process dies. This is not called
781 * when the helper process is stoped using GNUNET_HELPER_stop()
783 * @param cls the closure from GNUNET_HELPER_start()
786 helper_exp_cb (void *cls)
788 struct GNUNET_TESTBED_ControllerProc *cp = cls;
789 GNUNET_TESTBED_ControllerStatusCallback cb;
794 GNUNET_TESTBED_controller_stop (cp);
796 cb (cb_cls, NULL, GNUNET_SYSERR);
801 * Starts a controller process at the host. FIXME: add controller start callback
802 * with the configuration with which the controller is started
804 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
805 * host when starting testbed controller at host
806 * @param host the host where the controller has to be started; NULL for
808 * @param cfg template configuration to use for the remote controller; the
809 * remote controller will be started with a slightly modified
810 * configuration (port numbers, unix domain sockets and service home
811 * values are changed as per TESTING library on the remote host)
812 * @param cb function called when the controller is successfully started or
813 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
814 * called if cb is called with GNUNET_SYSERR as status. Will never be
815 * called in the same task as 'GNUNET_TESTBED_controller_start'
816 * (synchronous errors will be signalled by returning NULL). This
817 * parameter cannot be NULL.
818 * @param cls closure for above callbacks
819 * @return the controller process handle, NULL on errors
821 struct GNUNET_TESTBED_ControllerProc *
822 GNUNET_TESTBED_controller_start (const char *controller_ip,
823 struct GNUNET_TESTBED_Host *host,
824 const struct GNUNET_CONFIGURATION_Handle *cfg,
825 GNUNET_TESTBED_ControllerStatusCallback cb,
828 struct GNUNET_TESTBED_ControllerProc *cp;
829 struct GNUNET_TESTBED_HelperInit *msg;
831 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
832 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
834 char * const binary_argv[] = {
835 "gnunet-testbed-helper", NULL
838 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
839 &helper_mst, &helper_exp_cb, cp);
843 char *remote_args[6 + 1];
845 const char *username;
846 const char *hostname;
848 username = GNUNET_TESTBED_host_get_username_ (host);
849 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
850 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
851 if (NULL == username)
852 GNUNET_asprintf (&cp->dst, "%s", hostname);
854 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
856 remote_args[argp++] = "ssh";
857 remote_args[argp++] = "-p";
858 remote_args[argp++] = cp->port;
859 remote_args[argp++] = "-q";
860 remote_args[argp++] = cp->dst;
861 remote_args[argp++] = "gnunet-testbed-helper";
862 remote_args[argp++] = NULL;
863 GNUNET_assert (argp == 6 + 1);
864 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
865 &helper_mst, &helper_exp_cb, cp);
867 if (NULL == cp->helper)
869 GNUNET_free_non_null (cp->port);
870 GNUNET_free_non_null (cp->dst);
877 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
878 cp->msg = &msg->header;
879 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
881 if (NULL == cp->shandle)
884 GNUNET_TESTBED_controller_stop (cp);
892 * Stop the controller process (also will terminate all peers and controllers
893 * dependent on this controller). This function blocks until the testbed has
894 * been fully terminated (!).
896 * @param cproc the controller process handle
899 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc)
901 if (NULL != cproc->shandle)
902 GNUNET_HELPER_send_cancel (cproc->shandle);
903 GNUNET_HELPER_stop (cproc->helper);
904 if (NULL != cproc->cfg)
905 GNUNET_CONFIGURATION_destroy (cproc->cfg);
906 GNUNET_free_non_null (cproc->port);
907 GNUNET_free_non_null (cproc->dst);
913 * Start a controller process using the given configuration at the
916 * @param cfg configuration to use
917 * @param host host to run the controller on; This should be the same host if
918 * the controller was previously started with
919 * GNUNET_TESTBED_controller_start; NULL for localhost
920 * @param event_mask bit mask with set of events to call 'cc' for;
921 * or-ed values of "1LL" shifted by the
922 * respective 'enum GNUNET_TESTBED_EventType'
923 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
924 * @param cc controller callback to invoke on events
925 * @param cc_cls closure for cc
926 * @return handle to the controller
928 struct GNUNET_TESTBED_Controller *
929 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
930 struct GNUNET_TESTBED_Host *host,
932 GNUNET_TESTBED_ControllerCallback cc,
935 struct GNUNET_TESTBED_Controller *controller;
936 struct GNUNET_TESTBED_InitMessage *msg;
937 unsigned long long max_parallel_peer_create;
940 GNUNET_CONFIGURATION_get_value_number (cfg, "testbed",
941 "MAX_PARALLEL_PEER_CREATE",
942 &max_parallel_peer_create))
947 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
949 controller->cc_cls = cc_cls;
950 controller->event_mask = event_mask;
951 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
952 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
953 if (NULL == controller->client)
955 GNUNET_TESTBED_controller_disconnect (controller);
960 host = GNUNET_TESTBED_host_create_by_id_ (0);
963 LOG (GNUNET_ERROR_TYPE_WARNING,
964 "Treating NULL host as localhost. Multiple references to localhost "
965 "may break when localhost freed before calling disconnect \n");
966 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
970 controller->aux_host = GNUNET_YES;
973 GNUNET_assert (NULL != host);
974 controller->opq_peer_create =
975 GNUNET_TESTBED_operation_queue_create_ ((unsigned int)
976 max_parallel_peer_create);
977 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
978 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
979 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
980 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
981 msg->event_mask = GNUNET_htonll (controller->event_mask);
982 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *)
990 * Configure shared services at a controller. Using this function,
991 * you can specify that certain services (such as "resolver")
992 * should not be run for each peer but instead be shared
993 * across N peers on the specified host. This function
994 * must be called before any peers are created at the host.
996 * @param controller controller to configure
997 * @param service_name name of the service to share
998 * @param num_peers number of peers that should share one instance
999 * of the specified service (1 for no sharing is the default),
1000 * use 0 to disable the service
1003 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
1004 const char *service_name,
1007 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
1008 uint16_t service_name_size;
1011 service_name_size = strlen (service_name) + 1;
1012 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
1013 + service_name_size;
1014 msg = GNUNET_malloc (msg_size);
1015 msg->header.size = htons (msg_size);
1016 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
1017 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
1018 msg->num_peers = htonl (num_peers);
1019 memcpy (&msg[1], service_name, service_name_size);
1020 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1025 * disconnects from the controller.
1027 * @param controller handle to controller to stop
1030 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
1032 struct MessageQueue *mq_entry;
1034 if (NULL != controller->th)
1035 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
1036 /* Clear the message queue */
1037 while (NULL != (mq_entry = controller->mq_head))
1039 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
1040 controller->mq_tail,
1042 GNUNET_free (mq_entry->msg);
1043 GNUNET_free (mq_entry);
1045 if (NULL != controller->client)
1046 GNUNET_CLIENT_disconnect (controller->client);
1047 GNUNET_CONFIGURATION_destroy (controller->cfg);
1048 if (GNUNET_YES == controller->aux_host)
1049 GNUNET_TESTBED_host_destroy (controller->host);
1050 GNUNET_TESTBED_operation_queue_destroy_ (controller->opq_peer_create);
1051 GNUNET_free (controller);
1056 * Register a host with the controller
1058 * @param controller the controller handle
1059 * @param host the host to register
1060 * @param cc the completion callback to call to inform the status of
1061 * registration. After calling this callback the registration handle
1062 * will be invalid. Cannot be NULL.
1063 * @param cc_cls the closure for the cc
1064 * @return handle to the host registration which can be used to cancel the
1067 struct GNUNET_TESTBED_HostRegistrationHandle *
1068 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
1069 struct GNUNET_TESTBED_Host *host,
1070 GNUNET_TESTBED_HostRegistrationCompletion cc,
1073 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
1074 struct GNUNET_TESTBED_AddHostMessage *msg;
1075 const char *username;
1076 const char *hostname;
1078 uint16_t user_name_length;
1080 if (NULL != controller->rh)
1082 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
1083 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
1085 LOG (GNUNET_ERROR_TYPE_WARNING,
1086 "Host hostname: %s already registered\n",
1087 (NULL == hostname) ? "localhost" : hostname);
1090 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
1093 GNUNET_assert (NULL != cc);
1095 rh->cc_cls = cc_cls;
1096 controller->rh = rh;
1097 username = GNUNET_TESTBED_host_get_username_ (host);
1098 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
1099 user_name_length = 0;
1100 if (NULL != username)
1102 user_name_length = strlen (username) + 1;
1103 msg_size += user_name_length;
1105 /* FIXME: what happens when hostname is NULL? localhost */
1106 GNUNET_assert (NULL != hostname);
1107 msg_size += strlen (hostname) + 1;
1108 msg = GNUNET_malloc (msg_size);
1109 msg->header.size = htons (msg_size);
1110 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
1111 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
1112 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
1113 msg->user_name_length = htons (user_name_length);
1114 if (NULL != username)
1115 memcpy (&msg[1], username, user_name_length);
1116 strcpy (((void *) &msg[1]) + user_name_length, hostname);
1117 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1123 * Cancel the pending registration. Note that if the registration message is
1124 * already sent to the service the cancellation has only the effect that the
1125 * registration completion callback for the registration is never called.
1127 * @param handle the registration handle to cancel
1130 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
1133 if (handle != handle->c->rh)
1138 handle->c->rh = NULL;
1139 GNUNET_free (handle);
1144 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
1145 * serialized and compressed
1147 * @param master handle to the master controller who creates the association
1148 * @param delegated_host requests to which host should be delegated; cannot be NULL
1149 * @param slave_host which host is used to run the slave controller; use NULL to
1150 * make the master controller connect to the delegated host
1151 * @param sxcfg serialized and compressed configuration
1152 * @param sxcfg_size the size scfg
1153 * @param scfg_size the size of uncompressed serialized configuration
1154 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
1155 * be started by the master controller; GNUNET_NO if we are just
1156 * allowed to use the slave via TCP/IP
1159 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
1160 struct GNUNET_TESTBED_Host *delegated_host,
1161 struct GNUNET_TESTBED_Host *slave_host,
1167 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
1170 GNUNET_assert (GNUNET_YES ==
1171 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1172 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1173 GNUNET_assert (GNUNET_YES ==
1174 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1175 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1176 msg = GNUNET_malloc (msg_size);
1177 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
1178 msg->header.size = htons (msg_size);
1179 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
1180 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
1181 ((NULL != slave_host) ? slave_host : master->host));
1182 msg->config_size = htons ((uint16_t) scfg_size);
1183 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
1184 memcpy (&msg[1], sxcfg, sxcfg_size);
1185 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
1190 * Compresses given configuration using zlib compress
1192 * @param config the serialized configuration
1193 * @param size the size of config
1194 * @param xconfig will be set to the compressed configuration (memory is fresly
1196 * @return the size of the xconfig
1199 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1204 xsize = compressBound ((uLong) size);
1205 *xconfig = GNUNET_malloc (xsize);
1206 GNUNET_assert (Z_OK ==
1207 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1208 (const Bytef *) config, (uLongf) size,
1215 * Create a link from slave controller to delegated controller. Whenever the
1216 * master controller is asked to start a peer at the delegated controller the
1217 * request will be routed towards slave controller (if a route exists). The
1218 * slave controller will then route it to the delegated controller. The
1219 * configuration of the slave controller is given and to be used to either
1220 * create the slave controller or to connect to an existing slave controller
1221 * process. 'is_subordinate' specifies if the given slave controller should be
1222 * started and managed by the master controller, or if the slave already has a
1223 * master and this is just a secondary master that is also allowed to use the
1226 * @param master handle to the master controller who creates the association
1227 * @param delegated_host requests to which host should be delegated
1228 * @param slave_host which host is used to run the slave controller
1229 * @param slave_cfg configuration to use for the slave controller
1230 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1231 * by the master controller; GNUNET_NO if we are just
1232 * allowed to use the slave via TCP/IP
1235 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1236 struct GNUNET_TESTBED_Host *delegated_host,
1237 struct GNUNET_TESTBED_Host *slave_host,
1238 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1246 GNUNET_assert (GNUNET_YES ==
1247 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1248 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1249 GNUNET_assert (GNUNET_YES ==
1250 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1251 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1252 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1253 GNUNET_free (config);
1254 GNUNET_assert ((UINT16_MAX -
1255 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1256 >= cc_size); /* Configuration doesn't fit in 1 message */
1257 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1258 (const char *) cconfig,
1259 cc_size, config_size, is_subordinate);
1260 GNUNET_free (cconfig);
1265 * Ask the testbed controller to write the current overlay topology to
1266 * a file. Naturally, the file will only contain a snapshot as the
1267 * topology may evolve all the time.
1269 * @param controller overlay controller to inspect
1270 * @param filename name of the file the topology should
1274 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1275 const char *filename)
1282 * Creates a helper initialization message. Only for testing.
1284 * @param cname the ip address of the controlling host
1285 * @param cfg the configuration that has to used to start the testbed service
1287 * @return the initialization message
1289 struct GNUNET_TESTBED_HelperInit *
1290 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1291 const struct GNUNET_CONFIGURATION_Handle *cfg)
1293 struct GNUNET_TESTBED_HelperInit *msg;
1297 size_t xconfig_size;
1301 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1302 GNUNET_assert (NULL != config);
1304 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1305 GNUNET_free (config);
1306 cname_len = strlen (cname);
1307 msg_size = xconfig_size + cname_len + 1 +
1308 sizeof (struct GNUNET_TESTBED_HelperInit);
1309 msg = GNUNET_realloc (xconfig, msg_size);
1310 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1311 msg->header.size = htons (msg_size);
1312 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1313 msg->cname_size = htons (cname_len);
1314 msg->config_size = htons (config_size);
1315 (void) strcpy ((char *) &msg[1], cname);
1321 * Cancel a pending operation. Releases all resources
1322 * of the operation and will ensure that no event
1323 * is generated for the operation. Does NOT guarantee
1324 * that the operation will be fully undone (or that
1325 * nothing ever happened).
1327 * @param operation operation to cancel
1330 GNUNET_TESTBED_operation_cancel (struct GNUNET_TESTBED_Operation *operation)
1332 GNUNET_CONTAINER_DLL_remove (operation->controller->op_head,
1333 operation->controller->op_tail,
1335 GNUNET_TESTBED_operation_done (operation);
1340 * Signal that the information from an operation has been fully
1341 * processed. This function MUST be called for each event
1342 * of type 'operation_finished' to fully remove the operation
1343 * from the operation queue. After calling this function, the
1344 * 'op_result' becomes invalid (!).
1346 * @param operation operation to signal completion for
1349 GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation)
1351 switch (operation->type)
1353 case OP_PEER_CREATE:
1354 GNUNET_TESTBED_operation_release_ (operation);
1356 case OP_PEER_DESTROY:
1357 GNUNET_free_non_null (operation->data);
1364 struct PeerInfoData2 *data;
1366 data = operation->data;
1369 case GNUNET_TESTBED_PIT_IDENTITY:
1370 GNUNET_free (data->details.peer_identity);
1372 case GNUNET_TESTBED_PIT_CONFIGURATION:
1373 GNUNET_CONFIGURATION_destroy (data->details.cfg);
1375 case GNUNET_TESTBED_PIT_GENERIC:
1376 GNUNET_assert (0); /* never reach here */
1380 GNUNET_free_non_null (operation->data);
1382 case OP_OVERLAY_CONNECT:
1383 GNUNET_free_non_null (operation->data);
1386 GNUNET_free (operation);
1390 /* end of testbed_api.c */