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"
45 * Generic logging shorthand
47 #define LOG(kind, ...) \
48 GNUNET_log_from (kind, "testbed-api", __VA_ARGS__);
53 #define LOG_DEBUG(...) \
54 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__);
57 * Relative time seconds shorthand
59 #define TIME_REL_SECS(sec) \
60 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, sec)
64 * Default server message sending retry timeout
66 #define TIMEOUT_REL TIME_REL_SECS(1)
70 * The message queue for sending messages to the controller service
75 * The message to be sent
77 struct GNUNET_MessageHeader *msg;
80 * next pointer for DLL
82 struct MessageQueue *next;
85 * prev pointer for DLL
87 struct MessageQueue *prev;
92 * Structure for a controller link
97 * The next ptr for DLL
99 struct ControllerLink *next;
102 * The prev ptr for DLL
104 struct ControllerLink *prev;
107 * The host which will be referred in the peer start request. This is the
108 * host where the peer should be started
110 struct GNUNET_TESTBED_Host *delegated_host;
113 * The host which will contacted to delegate the peer start request
115 struct GNUNET_TESTBED_Host *slave_host;
118 * The configuration to be used to connect to slave host
120 const struct GNUNET_CONFIGURATION_Handle *slave_cfg;
123 * GNUNET_YES if the slave should be started (and stopped) by us; GNUNET_NO
124 * if we are just allowed to use the slave via TCP/IP
131 * handle for host registration
133 struct GNUNET_TESTBED_HostRegistrationHandle
136 * The host being registered
138 struct GNUNET_TESTBED_Host *host;
141 * The controller at which this host is being registered
143 struct GNUNET_TESTBED_Controller *c;
146 * The Registartion completion callback
148 GNUNET_TESTBED_HostRegistrationCompletion cc;
151 * The closure for above callback
158 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM message from
159 * controller (testbed service)
161 * @param c the controller handler
162 * @param msg message received
163 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
167 handle_addhostconfirm (struct GNUNET_TESTBED_Controller *c,
168 const struct GNUNET_TESTBED_HostConfirmedMessage *msg)
170 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
179 if (GNUNET_TESTBED_host_get_id_ (rh->host) != ntohl (msg->host_id))
181 LOG_DEBUG ("Mismatch in host id's %u, %u of host confirm msg\n",
182 GNUNET_TESTBED_host_get_id_ (rh->host), ntohl (msg->host_id));
186 msg_size = ntohs (msg->header.size);
187 if (sizeof (struct GNUNET_TESTBED_HostConfirmedMessage) == msg_size)
189 LOG_DEBUG ("Host %u successfully registered\n", ntohl (msg->host_id));
190 GNUNET_TESTBED_mark_host_registered_at_ (rh->host, c);
191 rh->cc (rh->cc_cls, NULL);
195 /* We have an error message */
196 emsg = (char *) &msg[1];
197 if ('\0' != emsg[msg_size -
198 sizeof (struct GNUNET_TESTBED_HostConfirmedMessage)])
204 LOG (GNUNET_ERROR_TYPE_ERROR, _("Adding host %u failed with error: %s\n"),
205 ntohl (msg->host_id), emsg);
206 rh->cc (rh->cc_cls, emsg);
213 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM message from
214 * controller (testbed service)
216 * @param c the controller handler
217 * @param msg message received
218 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
222 handle_opsuccess (struct GNUNET_TESTBED_Controller *c,
224 GNUNET_TESTBED_GenericOperationSuccessEventMessage *msg)
226 struct GNUNET_TESTBED_Operation *op;
227 struct GNUNET_TESTBED_EventInformation *event;
230 op_id = GNUNET_ntohll (msg->operation_id);
231 LOG_DEBUG ("Operation %ul successful\n", op_id);
232 for (op = c->op_head; NULL != op; op = op->next)
234 if (op->operation_id == op_id)
239 LOG_DEBUG ("Operation not found\n");
243 if (0 != (c->event_mask & (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED)))
244 event = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_EventInformation));
246 event->type = GNUNET_TESTBED_ET_OPERATION_FINISHED;
249 case OP_PEER_DESTROY:
251 struct PeerDestroyData *data;
255 event->details.operation_finished.operation = op;
256 event->details.operation_finished.op_cls = NULL;
257 event->details.operation_finished.emsg = NULL;
258 event->details.operation_finished.pit = GNUNET_TESTBED_PIT_GENERIC;
259 event->details.operation_finished.op_result.generic = NULL;
261 data = (struct PeerDestroyData *) op->data;
262 if (NULL != data->peer->details)
264 if (NULL != data->peer->details->cfg)
265 GNUNET_CONFIGURATION_destroy (data->peer->details->cfg);
268 GNUNET_free (data->peer);
277 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
281 c->cc (c->cc_cls, event);
289 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS message from
290 * controller (testbed service)
292 * @param c the controller handler
293 * @param msg message received
294 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
298 handle_peer_create_success (struct GNUNET_TESTBED_Controller *c,
300 GNUNET_TESTBED_PeerCreateSuccessEventMessage *msg)
302 struct GNUNET_TESTBED_Operation *op;
303 struct PeerCreateData *data;
304 struct GNUNET_TESTBED_Peer *peer;
305 GNUNET_TESTBED_PeerCreateCallback cb;
309 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage)
310 == ntohs (msg->header.size));
311 op_id = GNUNET_ntohll (msg->operation_id);
312 for (op = c->op_head; NULL != op; op = op->next)
314 if (op->operation_id == op_id)
319 LOG_DEBUG ("Operation not found\n");
322 GNUNET_assert (OP_PEER_CREATE == op->type);
323 GNUNET_assert (NULL != op->data);
325 GNUNET_assert (NULL != data->peer);
327 GNUNET_assert (peer->unique_id == ntohl (msg->peer_id));
332 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
334 cb (cls, peer, NULL);
340 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT message from
341 * controller (testbed service)
343 * @param c the controller handler
344 * @param msg message received
345 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
349 handle_peer_event (struct GNUNET_TESTBED_Controller *c,
350 const struct GNUNET_TESTBED_PeerEventMessage *msg)
352 struct GNUNET_TESTBED_Operation *op;
353 struct GNUNET_TESTBED_Peer *peer;
354 struct GNUNET_TESTBED_EventInformation event;
357 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerEventMessage)
358 == ntohs (msg->header.size));
359 op_id = GNUNET_ntohll (msg->operation_id);
360 for (op = c->op_head; NULL != op; op = op->next)
362 if (op->operation_id == op_id)
367 LOG_DEBUG ("Operation not found\n");
370 GNUNET_assert ((OP_PEER_START == op->type) || (OP_PEER_STOP == op->type));
372 GNUNET_assert (NULL != peer);
373 event.type = (enum GNUNET_TESTBED_EventType) ntohl (msg->event_type);
376 case GNUNET_TESTBED_ET_PEER_START:
377 event.details.peer_start.host = peer->host;
378 event.details.peer_start.peer = peer;
380 case GNUNET_TESTBED_ET_PEER_STOP:
381 event.details.peer_stop.peer = peer;
384 GNUNET_assert (0); /* We should never reach this state */
386 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
387 if (0 != ((GNUNET_TESTBED_ET_PEER_START | GNUNET_TESTBED_ET_PEER_STOP)
391 c->cc (c->cc_cls, &event);
398 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG message from
399 * controller (testbed service)
401 * @param c the controller handler
402 * @param msg message received
403 * @return GNUNET_YES if we can continue receiving from service; GNUNET_NO if
407 handle_peer_config (struct GNUNET_TESTBED_Controller *c,
408 const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *msg)
410 struct GNUNET_TESTBED_Operation *op;
411 struct GNUNET_TESTBED_Peer *peer;
412 struct PeerInfoData *data;
413 struct PeerInfoData2 *response_data;
414 struct GNUNET_TESTBED_EventInformation info;
417 op_id = GNUNET_ntohll (msg->operation_id);
418 for (op = c->op_head; NULL != op; op = op->next)
420 if (op->operation_id == op_id)
425 LOG_DEBUG ("Operation not found");
429 GNUNET_assert (NULL != data);
431 GNUNET_assert (NULL != peer);
432 GNUNET_assert (ntohl (msg->peer_id) == peer->unique_id);
433 if (0 == (c->event_mask & (1L << GNUNET_TESTBED_ET_OPERATION_FINISHED)))
435 LOG_DEBUG ("Skipping operation callback as flag not set\n");
436 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
439 response_data = GNUNET_malloc (sizeof (struct PeerInfoData2));
440 response_data->pit = data->pit;
442 info.type = GNUNET_TESTBED_ET_OPERATION_FINISHED;
443 info.details.operation_finished.operation = op;
444 info.details.operation_finished.op_cls = NULL;
445 info.details.operation_finished.emsg = NULL;
446 info.details.operation_finished.pit = response_data->pit;
447 switch (response_data->pit)
449 case GNUNET_TESTBED_PIT_IDENTITY:
451 struct GNUNET_PeerIdentity *peer_identity;
453 peer_identity = GNUNET_malloc (sizeof (struct GNUNET_PeerIdentity));
454 (void) memcpy (peer_identity, &msg->peer_identity,
455 sizeof (struct GNUNET_PeerIdentity));
456 response_data->details.peer_identity = peer_identity;
457 info.details.operation_finished.op_result.pid = peer_identity;
460 case GNUNET_TESTBED_PIT_CONFIGURATION:
462 struct GNUNET_CONFIGURATION_Handle *cfg;
468 config_size = (uLong) ntohs (msg->config_size);
469 config = GNUNET_malloc (config_size);
470 msize = ntohs (msg->header.size);
471 msize -= sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage);
472 if (Z_OK != (ret = uncompress ((Bytef *) config, &config_size,
473 (const Bytef *) &msg[1], (uLong) msize)))
475 cfg = GNUNET_CONFIGURATION_create ();
476 GNUNET_assert (GNUNET_OK ==
477 GNUNET_CONFIGURATION_deserialize (cfg, config,
478 (size_t) config_size,
480 GNUNET_free (config);
481 response_data->details.cfg = cfg;
482 info.details.operation_finished.op_result.cfg = cfg;
485 case GNUNET_TESTBED_PIT_GENERIC:
486 GNUNET_assert (0); /* never reach here */
489 op->data = response_data;
490 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
491 c->cc (c->cc_cls, &info);
497 * Handler for messages from controller (testbed service)
499 * @param cls the controller handler
500 * @param msg message received, NULL on timeout or fatal error
503 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
505 struct GNUNET_TESTBED_Controller *c = cls;
509 c->in_receive = GNUNET_NO;
510 /* FIXME: Add checks for message integrity */
513 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
517 msize = ntohs (msg->size);
518 switch (ntohs (msg->type))
520 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
521 GNUNET_assert (msize >= sizeof (struct
522 GNUNET_TESTBED_HostConfirmedMessage));
524 handle_addhostconfirm (c, (const struct GNUNET_TESTBED_HostConfirmedMessage *) msg);
526 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
528 (msize == sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage));
530 handle_opsuccess (c, (const struct
531 GNUNET_TESTBED_GenericOperationSuccessEventMessage
534 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
535 GNUNET_assert (msize ==
536 sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
538 handle_peer_create_success
539 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
541 case GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT:
542 GNUNET_assert (msize == sizeof (struct GNUNET_TESTBED_PeerEventMessage));
544 handle_peer_event (c, (const struct GNUNET_TESTBED_PeerEventMessage *) msg);
547 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG:
548 GNUNET_assert (msize >=
549 sizeof (struct GNUNET_TESTBED_PeerConfigurationInformationMessage));
552 (c, (const struct GNUNET_TESTBED_PeerConfigurationInformationMessage *)
558 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
560 c->in_receive = GNUNET_YES;
561 GNUNET_CLIENT_receive (c->client, &message_handler, c,
562 GNUNET_TIME_UNIT_FOREVER_REL);
568 * Function called to notify a client about the connection begin ready to queue
569 * more data. "buf" will be NULL and "size" zero if the connection was closed
570 * for writing in the meantime.
573 * @param size number of bytes available in buf
574 * @param buf where the callee should write the message
575 * @return number of bytes written to buf
578 transmit_ready_notify (void *cls, size_t size, void *buf)
580 struct GNUNET_TESTBED_Controller *c = cls;
581 struct MessageQueue *mq_entry;
584 mq_entry = c->mq_head;
585 GNUNET_assert (NULL != mq_entry);
586 if ((0 == size) && (NULL == buf)) /* Timeout */
588 LOG_DEBUG ("Message sending timed out -- retrying\n");
590 GNUNET_CLIENT_notify_transmit_ready (c->client,
591 ntohs (mq_entry->msg->size),
593 GNUNET_YES, &transmit_ready_notify,
597 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
598 size = ntohs (mq_entry->msg->size);
599 memcpy (buf, mq_entry->msg, size);
600 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
601 ntohs (mq_entry->msg->type), size);
602 GNUNET_free (mq_entry->msg);
603 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
604 GNUNET_free (mq_entry);
605 mq_entry = c->mq_head;
606 if (NULL != mq_entry)
608 GNUNET_CLIENT_notify_transmit_ready (c->client,
609 ntohs (mq_entry->msg->size),
611 GNUNET_YES, &transmit_ready_notify,
613 if (GNUNET_NO == c->in_receive)
615 c->in_receive = GNUNET_YES;
616 GNUNET_CLIENT_receive (c->client, &message_handler, c,
617 GNUNET_TIME_UNIT_FOREVER_REL);
624 * Queues a message in send queue for sending to the service
626 * @param controller the handle to the controller
627 * @param msg the message to queue
630 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
631 struct GNUNET_MessageHeader *msg)
633 struct MessageQueue *mq_entry;
637 type = ntohs (msg->type);
638 size = ntohs (msg->size);
639 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
640 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
641 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
643 LOG (GNUNET_ERROR_TYPE_DEBUG,
644 "Queueing message of type %u, size %u for sending\n", type,
646 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
648 if (NULL == controller->th)
650 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
652 GNUNET_YES, &transmit_ready_notify,
658 * Handle for controller process
660 struct GNUNET_TESTBED_ControllerProc
665 struct GNUNET_HELPER_Handle *helper;
668 * The host where the helper is run
670 struct GNUNET_TESTBED_Host *host;
673 * The controller error callback
675 GNUNET_TESTBED_ControllerStatusCallback cb;
678 * The closure for the above callback
683 * The send handle for the helper
685 struct GNUNET_HELPER_SendHandle *shandle;
688 * The message corresponding to send handle
690 struct GNUNET_MessageHeader *msg;
693 * The port number for ssh; used for helpers starting ssh
698 * The ssh destination string; used for helpers starting ssh
703 * The configuration of the running testbed service
705 struct GNUNET_CONFIGURATION_Handle *cfg;
711 * Functions with this signature are called whenever a
712 * complete message is received by the tokenizer.
714 * Do not call GNUNET_SERVER_mst_destroy in callback
717 * @param client identification of the client
718 * @param message the actual message
720 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
722 static int helper_mst (void *cls, void *client,
723 const struct GNUNET_MessageHeader *message)
725 struct GNUNET_TESTBED_ControllerProc *cp = cls;
726 const struct GNUNET_TESTBED_HelperReply *msg;
727 const char *hostname;
732 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
733 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
734 < ntohs (msg->header.size));
735 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
736 == ntohs (msg->header.type));
737 config_size = (uLongf) ntohs (msg->config_size);
738 xconfig_size = (uLongf) (ntohs (msg->header.size)
739 - sizeof (struct GNUNET_TESTBED_HelperReply));
740 config = GNUNET_malloc (config_size);
741 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
742 (const Bytef *) &msg[1], xconfig_size));
743 GNUNET_assert (NULL == cp->cfg);
744 cp->cfg = GNUNET_CONFIGURATION_create ();
745 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
746 config_size, GNUNET_NO));
747 GNUNET_free (config);
748 if ((NULL == cp->host) ||
749 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
750 hostname = "localhost";
751 /* Change the hostname so that we can connect to it */
752 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
754 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
760 * Continuation function from GNUNET_HELPER_send()
763 * @param result GNUNET_OK on success,
764 * GNUNET_NO if helper process died
765 * GNUNET_SYSERR during GNUNET_HELPER_stop
768 clear_msg (void *cls, int result)
770 struct GNUNET_TESTBED_ControllerProc *cp = cls;
772 GNUNET_assert (NULL != cp->shandle);
774 GNUNET_free (cp->msg);
779 * Callback that will be called when the helper process dies. This is not called
780 * when the helper process is stoped using GNUNET_HELPER_stop()
782 * @param cls the closure from GNUNET_HELPER_start()
785 helper_exp_cb (void *cls)
787 struct GNUNET_TESTBED_ControllerProc *cp = cls;
788 GNUNET_TESTBED_ControllerStatusCallback cb;
793 GNUNET_TESTBED_controller_stop (cp);
795 cb (cb_cls, NULL, GNUNET_SYSERR);
800 * Starts a controller process at the host. FIXME: add controller start callback
801 * with the configuration with which the controller is started
803 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
804 * host when starting testbed controller at host
805 * @param host the host where the controller has to be started; NULL for
807 * @param cfg template configuration to use for the remote controller; the
808 * remote controller will be started with a slightly modified
809 * configuration (port numbers, unix domain sockets and service home
810 * values are changed as per TESTING library on the remote host)
811 * @param cb function called when the controller is successfully started or
812 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
813 * called if cb is called with GNUNET_SYSERR as status. Will never be
814 * called in the same task as 'GNUNET_TESTBED_controller_start'
815 * (synchronous errors will be signalled by returning NULL). This
816 * parameter cannot be NULL.
817 * @param cls closure for above callbacks
818 * @return the controller process handle, NULL on errors
820 struct GNUNET_TESTBED_ControllerProc *
821 GNUNET_TESTBED_controller_start (const char *controller_ip,
822 struct GNUNET_TESTBED_Host *host,
823 const struct GNUNET_CONFIGURATION_Handle *cfg,
824 GNUNET_TESTBED_ControllerStatusCallback cb,
827 struct GNUNET_TESTBED_ControllerProc *cp;
828 struct GNUNET_TESTBED_HelperInit *msg;
830 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
831 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
833 char * const binary_argv[] = {
834 "gnunet-testbed-helper", NULL
837 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
838 &helper_mst, &helper_exp_cb, cp);
842 char *remote_args[6 + 1];
844 const char *username;
845 const char *hostname;
847 username = GNUNET_TESTBED_host_get_username_ (host);
848 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
849 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
850 if (NULL == username)
851 GNUNET_asprintf (&cp->dst, "%s", hostname);
853 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
855 remote_args[argp++] = "ssh";
856 remote_args[argp++] = "-p";
857 remote_args[argp++] = cp->port;
858 remote_args[argp++] = "-q";
859 remote_args[argp++] = cp->dst;
860 remote_args[argp++] = "gnunet-testbed-helper";
861 remote_args[argp++] = NULL;
862 GNUNET_assert (argp == 6 + 1);
863 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
864 &helper_mst, &helper_exp_cb, cp);
866 if (NULL == cp->helper)
868 GNUNET_free_non_null (cp->port);
869 GNUNET_free_non_null (cp->dst);
876 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
877 cp->msg = &msg->header;
878 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
880 if (NULL == cp->shandle)
883 GNUNET_TESTBED_controller_stop (cp);
891 * Stop the controller process (also will terminate all peers and controllers
892 * dependent on this controller). This function blocks until the testbed has
893 * been fully terminated (!).
895 * @param cproc the controller process handle
898 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc)
900 if (NULL != cproc->shandle)
901 GNUNET_HELPER_send_cancel (cproc->shandle);
902 GNUNET_HELPER_stop (cproc->helper);
903 if (NULL != cproc->cfg)
904 GNUNET_CONFIGURATION_destroy (cproc->cfg);
905 GNUNET_free_non_null (cproc->port);
906 GNUNET_free_non_null (cproc->dst);
912 * Start a controller process using the given configuration at the
915 * @param cfg configuration to use
916 * @param host host to run the controller on; This should be the same host if
917 * the controller was previously started with
918 * GNUNET_TESTBED_controller_start; NULL for localhost
919 * @param event_mask bit mask with set of events to call 'cc' for;
920 * or-ed values of "1LL" shifted by the
921 * respective 'enum GNUNET_TESTBED_EventType'
922 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
923 * @param cc controller callback to invoke on events
924 * @param cc_cls closure for cc
925 * @return handle to the controller
927 struct GNUNET_TESTBED_Controller *
928 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
929 struct GNUNET_TESTBED_Host *host,
931 GNUNET_TESTBED_ControllerCallback cc,
934 struct GNUNET_TESTBED_Controller *controller;
935 struct GNUNET_TESTBED_InitMessage *msg;
937 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
939 controller->cc_cls = cc_cls;
940 controller->event_mask = event_mask;
941 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
942 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
943 if (NULL == controller->client)
945 GNUNET_TESTBED_controller_disconnect (controller);
950 host = GNUNET_TESTBED_host_create_by_id_ (0);
953 LOG (GNUNET_ERROR_TYPE_WARNING,
954 "Treating NULL host as localhost. Multiple references to localhost. "
955 " May break when localhost freed before calling disconnect \n");
956 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
960 controller->aux_host = GNUNET_YES;
963 GNUNET_assert (NULL != host);
964 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
965 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
966 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
967 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
968 msg->event_mask = GNUNET_htonll (controller->event_mask);
969 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
975 * Configure shared services at a controller. Using this function,
976 * you can specify that certain services (such as "resolver")
977 * should not be run for each peer but instead be shared
978 * across N peers on the specified host. This function
979 * must be called before any peers are created at the host.
981 * @param controller controller to configure
982 * @param service_name name of the service to share
983 * @param num_peers number of peers that should share one instance
984 * of the specified service (1 for no sharing is the default),
985 * use 0 to disable the service
988 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
989 const char *service_name,
992 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
993 uint16_t service_name_size;
996 service_name_size = strlen (service_name) + 1;
997 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
999 msg = GNUNET_malloc (msg_size);
1000 msg->header.size = htons (msg_size);
1001 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
1002 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
1003 msg->num_peers = htonl (num_peers);
1004 memcpy (&msg[1], service_name, service_name_size);
1005 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1010 * disconnects from the controller.
1012 * @param controller handle to controller to stop
1015 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
1017 struct MessageQueue *mq_entry;
1019 if (NULL != controller->th)
1020 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
1021 /* Clear the message queue */
1022 while (NULL != (mq_entry = controller->mq_head))
1024 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
1025 controller->mq_tail,
1027 GNUNET_free (mq_entry->msg);
1028 GNUNET_free (mq_entry);
1030 if (NULL != controller->client)
1031 GNUNET_CLIENT_disconnect (controller->client);
1032 GNUNET_CONFIGURATION_destroy (controller->cfg);
1033 if (GNUNET_YES == controller->aux_host)
1034 GNUNET_TESTBED_host_destroy (controller->host);
1035 GNUNET_free (controller);
1040 * Register a host with the controller
1042 * @param controller the controller handle
1043 * @param host the host to register
1044 * @param cc the completion callback to call to inform the status of
1045 * registration. After calling this callback the registration handle
1046 * will be invalid. Cannot be NULL.
1047 * @param cc_cls the closure for the cc
1048 * @return handle to the host registration which can be used to cancel the
1051 struct GNUNET_TESTBED_HostRegistrationHandle *
1052 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
1053 struct GNUNET_TESTBED_Host *host,
1054 GNUNET_TESTBED_HostRegistrationCompletion cc,
1057 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
1058 struct GNUNET_TESTBED_AddHostMessage *msg;
1059 const char *username;
1060 const char *hostname;
1062 uint16_t user_name_length;
1064 if (NULL != controller->rh)
1066 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
1067 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
1069 LOG (GNUNET_ERROR_TYPE_WARNING,
1070 "Host hostname: %s already registered\n",
1071 (NULL == hostname) ? "localhost" : hostname);
1074 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
1077 GNUNET_assert (NULL != cc);
1079 rh->cc_cls = cc_cls;
1080 controller->rh = rh;
1081 username = GNUNET_TESTBED_host_get_username_ (host);
1082 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
1083 user_name_length = 0;
1084 if (NULL != username)
1086 user_name_length = strlen (username) + 1;
1087 msg_size += user_name_length;
1089 /* FIXME: what happens when hostname is NULL? localhost */
1090 GNUNET_assert (NULL != hostname);
1091 msg_size += strlen (hostname) + 1;
1092 msg = GNUNET_malloc (msg_size);
1093 msg->header.size = htons (msg_size);
1094 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
1095 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
1096 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
1097 msg->user_name_length = htons (user_name_length);
1098 if (NULL != username)
1099 memcpy (&msg[1], username, user_name_length);
1100 strcpy (((void *) &msg[1]) + user_name_length, hostname);
1101 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
1107 * Cancel the pending registration. Note that if the registration message is
1108 * already sent to the service the cancellation has only the effect that the
1109 * registration completion callback for the registration is never called.
1111 * @param handle the registration handle to cancel
1114 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
1117 if (handle != handle->c->rh)
1122 handle->c->rh = NULL;
1123 GNUNET_free (handle);
1128 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
1129 * serialized and compressed
1131 * @param master handle to the master controller who creates the association
1132 * @param delegated_host requests to which host should be delegated; cannot be NULL
1133 * @param slave_host which host is used to run the slave controller; use NULL to
1134 * make the master controller connect to the delegated host
1135 * @param sxcfg serialized and compressed configuration
1136 * @param sxcfg_size the size scfg
1137 * @param scfg_size the size of uncompressed serialized configuration
1138 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
1139 * be started by the master controller; GNUNET_NO if we are just
1140 * allowed to use the slave via TCP/IP
1143 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
1144 struct GNUNET_TESTBED_Host *delegated_host,
1145 struct GNUNET_TESTBED_Host *slave_host,
1151 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
1154 GNUNET_assert (GNUNET_YES ==
1155 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1156 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1157 GNUNET_assert (GNUNET_YES ==
1158 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1159 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1160 msg = GNUNET_malloc (msg_size);
1161 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
1162 msg->header.size = htons (msg_size);
1163 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
1164 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
1165 ((NULL != slave_host) ? slave_host : master->host));
1166 msg->config_size = htons ((uint16_t) scfg_size);
1167 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
1168 memcpy (&msg[1], sxcfg, sxcfg_size);
1169 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
1174 * Compresses given configuration using zlib compress
1176 * @param config the serialized configuration
1177 * @param size the size of config
1178 * @param xconfig will be set to the compressed configuration (memory is fresly
1180 * @return the size of the xconfig
1183 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1188 xsize = compressBound ((uLong) size);
1189 *xconfig = GNUNET_malloc (xsize);
1190 GNUNET_assert (Z_OK ==
1191 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1192 (const Bytef *) config, (uLongf) size,
1199 * Create a link from slave controller to delegated controller. Whenever the
1200 * master controller is asked to start a peer at the delegated controller the
1201 * request will be routed towards slave controller (if a route exists). The
1202 * slave controller will then route it to the delegated controller. The
1203 * configuration of the slave controller is given and to be used to either
1204 * create the slave controller or to connect to an existing slave controller
1205 * process. 'is_subordinate' specifies if the given slave controller should be
1206 * started and managed by the master controller, or if the slave already has a
1207 * master and this is just a secondary master that is also allowed to use the
1210 * @param master handle to the master controller who creates the association
1211 * @param delegated_host requests to which host should be delegated
1212 * @param slave_host which host is used to run the slave controller
1213 * @param slave_cfg configuration to use for the slave controller
1214 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1215 * by the master controller; GNUNET_NO if we are just
1216 * allowed to use the slave via TCP/IP
1219 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1220 struct GNUNET_TESTBED_Host *delegated_host,
1221 struct GNUNET_TESTBED_Host *slave_host,
1222 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1230 GNUNET_assert (GNUNET_YES ==
1231 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1232 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1233 GNUNET_assert (GNUNET_YES ==
1234 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1235 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1236 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1237 GNUNET_free (config);
1238 GNUNET_assert ((UINT16_MAX -
1239 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1240 >= cc_size); /* Configuration doesn't fit in 1 message */
1241 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1242 (const char *) cconfig,
1243 cc_size, config_size, is_subordinate);
1244 GNUNET_free (cconfig);
1249 * Ask the testbed controller to write the current overlay topology to
1250 * a file. Naturally, the file will only contain a snapshot as the
1251 * topology may evolve all the time.
1253 * @param controller overlay controller to inspect
1254 * @param filename name of the file the topology should
1258 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1259 const char *filename)
1266 * Creates a helper initialization message. Only for testing.
1268 * @param cname the ip address of the controlling host
1269 * @param cfg the configuration that has to used to start the testbed service
1271 * @return the initialization message
1273 struct GNUNET_TESTBED_HelperInit *
1274 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1275 const struct GNUNET_CONFIGURATION_Handle *cfg)
1277 struct GNUNET_TESTBED_HelperInit *msg;
1281 size_t xconfig_size;
1285 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1286 GNUNET_assert (NULL != config);
1288 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1289 GNUNET_free (config);
1290 cname_len = strlen (cname);
1291 msg_size = xconfig_size + cname_len + 1 +
1292 sizeof (struct GNUNET_TESTBED_HelperInit);
1293 msg = GNUNET_realloc (xconfig, msg_size);
1294 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1295 msg->header.size = htons (msg_size);
1296 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1297 msg->cname_size = htons (cname_len);
1298 msg->config_size = htons (config_size);
1299 (void) strcpy ((char *) &msg[1], cname);
1305 * Cancel a pending operation. Releases all resources
1306 * of the operation and will ensure that no event
1307 * is generated for the operation. Does NOT guarantee
1308 * that the operation will be fully undone (or that
1309 * nothing ever happened).
1311 * @param operation operation to cancel
1314 GNUNET_TESTBED_operation_cancel (struct GNUNET_TESTBED_Operation *operation)
1316 GNUNET_CONTAINER_DLL_remove (operation->controller->op_head,
1317 operation->controller->op_tail,
1319 GNUNET_TESTBED_operation_done (operation);
1324 * Signal that the information from an operation has been fully
1325 * processed. This function MUST be called for each event
1326 * of type 'operation_finished' to fully remove the operation
1327 * from the operation queue. After calling this function, the
1328 * 'op_result' becomes invalid (!).
1330 * @param operation operation to signal completion for
1333 GNUNET_TESTBED_operation_done (struct GNUNET_TESTBED_Operation *operation)
1335 switch (operation->type)
1337 case OP_PEER_CREATE:
1338 GNUNET_free_non_null (operation->data);
1340 case OP_PEER_DESTROY:
1341 GNUNET_free_non_null (operation->data);
1348 struct PeerInfoData2 *data;
1350 data = operation->data;
1353 case GNUNET_TESTBED_PIT_IDENTITY:
1354 GNUNET_free (data->details.peer_identity);
1356 case GNUNET_TESTBED_PIT_CONFIGURATION:
1357 GNUNET_CONFIGURATION_destroy (data->details.cfg);
1359 case GNUNET_TESTBED_PIT_GENERIC:
1360 GNUNET_assert (0); /* never reach here */
1364 GNUNET_free_non_null (operation->data);
1367 GNUNET_free (operation);
1371 /* end of testbed_api.c */