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"
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);
279 c->cc (c->cc_cls, event);
282 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
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));
330 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
334 cb (cls, peer, NULL);
340 * Handler for messages from controller (testbed service)
342 * @param cls the controller handler
343 * @param msg message received, NULL on timeout or fatal error
346 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
348 struct GNUNET_TESTBED_Controller *c = cls;
351 c->in_receive = GNUNET_NO;
352 /* FIXME: Add checks for message integrity */
355 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
359 switch (ntohs (msg->type))
361 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
363 handle_addhostconfirm (c, (const struct
364 GNUNET_TESTBED_HostConfirmedMessage *) msg);
366 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
368 handle_opsuccess (c, (const struct
369 GNUNET_TESTBED_GenericOperationSuccessEventMessage
372 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
374 handle_peer_create_success
375 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
380 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
382 c->in_receive = GNUNET_YES;
383 GNUNET_CLIENT_receive (c->client, &message_handler, c,
384 GNUNET_TIME_UNIT_FOREVER_REL);
390 * Function called to notify a client about the connection begin ready to queue
391 * more data. "buf" will be NULL and "size" zero if the connection was closed
392 * for writing in the meantime.
395 * @param size number of bytes available in buf
396 * @param buf where the callee should write the message
397 * @return number of bytes written to buf
400 transmit_ready_notify (void *cls, size_t size, void *buf)
402 struct GNUNET_TESTBED_Controller *c = cls;
403 struct MessageQueue *mq_entry;
406 mq_entry = c->mq_head;
407 GNUNET_assert (NULL != mq_entry);
408 if ((0 == size) && (NULL == buf)) /* Timeout */
410 LOG_DEBUG ("Message sending timed out -- retrying\n");
412 GNUNET_CLIENT_notify_transmit_ready (c->client,
413 ntohs (mq_entry->msg->size),
415 GNUNET_YES, &transmit_ready_notify,
419 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
420 size = ntohs (mq_entry->msg->size);
421 memcpy (buf, mq_entry->msg, size);
422 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
423 ntohs (mq_entry->msg->type), size);
424 GNUNET_free (mq_entry->msg);
425 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
426 GNUNET_free (mq_entry);
427 mq_entry = c->mq_head;
428 if (NULL != mq_entry)
430 GNUNET_CLIENT_notify_transmit_ready (c->client,
431 ntohs (mq_entry->msg->size),
433 GNUNET_YES, &transmit_ready_notify,
435 if (GNUNET_NO == c->in_receive)
437 c->in_receive = GNUNET_YES;
438 GNUNET_CLIENT_receive (c->client, &message_handler, c,
439 GNUNET_TIME_UNIT_FOREVER_REL);
446 * Queues a message in send queue for sending to the service
448 * @param controller the handle to the controller
449 * @param msg the message to queue
452 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
453 struct GNUNET_MessageHeader *msg)
455 struct MessageQueue *mq_entry;
459 type = ntohs (msg->type);
460 size = ntohs (msg->size);
461 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
462 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
463 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
465 LOG (GNUNET_ERROR_TYPE_DEBUG,
466 "Queueing message of type %u, size %u for sending\n", type,
468 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
470 if (NULL == controller->th)
472 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
474 GNUNET_YES, &transmit_ready_notify,
480 * Handle for controller process
482 struct GNUNET_TESTBED_ControllerProc
487 struct GNUNET_HELPER_Handle *helper;
490 * The host where the helper is run
492 struct GNUNET_TESTBED_Host *host;
495 * The controller error callback
497 GNUNET_TESTBED_ControllerStatusCallback cb;
500 * The closure for the above callback
505 * The send handle for the helper
507 struct GNUNET_HELPER_SendHandle *shandle;
510 * The message corresponding to send handle
512 struct GNUNET_MessageHeader *msg;
515 * The port number for ssh; used for helpers starting ssh
520 * The ssh destination string; used for helpers starting ssh
525 * The configuration of the running testbed service
527 struct GNUNET_CONFIGURATION_Handle *cfg;
533 * Functions with this signature are called whenever a
534 * complete message is received by the tokenizer.
536 * Do not call GNUNET_SERVER_mst_destroy in callback
539 * @param client identification of the client
540 * @param message the actual message
542 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
544 static int helper_mst (void *cls, void *client,
545 const struct GNUNET_MessageHeader *message)
547 struct GNUNET_TESTBED_ControllerProc *cp = cls;
548 const struct GNUNET_TESTBED_HelperReply *msg;
549 const char *hostname;
554 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
555 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
556 < ntohs (msg->header.size));
557 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
558 == ntohs (msg->header.type));
559 config_size = (uLongf) ntohs (msg->config_size);
560 xconfig_size = (uLongf) (ntohs (msg->header.size)
561 - sizeof (struct GNUNET_TESTBED_HelperReply));
562 config = GNUNET_malloc (config_size);
563 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
564 (const Bytef *) &msg[1], xconfig_size));
565 GNUNET_assert (NULL == cp->cfg);
566 cp->cfg = GNUNET_CONFIGURATION_create ();
567 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
568 config_size, GNUNET_NO));
569 GNUNET_free (config);
570 if ((NULL == cp->host) ||
571 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
572 hostname = "localhost";
573 /* Change the hostname so that we can connect to it */
574 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
576 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
582 * Continuation function from GNUNET_HELPER_send()
585 * @param result GNUNET_OK on success,
586 * GNUNET_NO if helper process died
587 * GNUNET_SYSERR during GNUNET_HELPER_stop
590 clear_msg (void *cls, int result)
592 struct GNUNET_TESTBED_ControllerProc *cp = cls;
594 GNUNET_assert (NULL != cp->shandle);
596 GNUNET_free (cp->msg);
601 * Callback that will be called when the helper process dies. This is not called
602 * when the helper process is stoped using GNUNET_HELPER_stop()
604 * @param cls the closure from GNUNET_HELPER_start()
607 helper_exp_cb (void *cls)
609 struct GNUNET_TESTBED_ControllerProc *cp = cls;
610 GNUNET_TESTBED_ControllerStatusCallback cb;
615 GNUNET_TESTBED_controller_stop (cp);
617 cb (cb_cls, NULL, GNUNET_SYSERR);
622 * Starts a controller process at the host. FIXME: add controller start callback
623 * with the configuration with which the controller is started
625 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
626 * host when starting testbed controller at host
627 * @param host the host where the controller has to be started; NULL for
629 * @param cfg template configuration to use for the remote controller; the
630 * remote controller will be started with a slightly modified
631 * configuration (port numbers, unix domain sockets and service home
632 * values are changed as per TESTING library on the remote host)
633 * @param cb function called when the controller is successfully started or
634 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
635 * called if cb is called with GNUNET_SYSERR as status. Will never be
636 * called in the same task as 'GNUNET_TESTBED_controller_start'
637 * (synchronous errors will be signalled by returning NULL). This
638 * parameter cannot be NULL.
639 * @param cls closure for above callbacks
640 * @return the controller process handle, NULL on errors
642 struct GNUNET_TESTBED_ControllerProc *
643 GNUNET_TESTBED_controller_start (const char *controller_ip,
644 struct GNUNET_TESTBED_Host *host,
645 const struct GNUNET_CONFIGURATION_Handle *cfg,
646 GNUNET_TESTBED_ControllerStatusCallback cb,
649 struct GNUNET_TESTBED_ControllerProc *cp;
650 struct GNUNET_TESTBED_HelperInit *msg;
652 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
653 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
655 char * const binary_argv[] = {
656 "gnunet-testbed-helper", NULL
659 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
660 &helper_mst, &helper_exp_cb, cp);
664 char *remote_args[6 + 1];
666 const char *username;
667 const char *hostname;
669 username = GNUNET_TESTBED_host_get_username_ (host);
670 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
671 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
672 if (NULL == username)
673 GNUNET_asprintf (&cp->dst, "%s", hostname);
675 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
677 remote_args[argp++] = "ssh";
678 remote_args[argp++] = "-p";
679 remote_args[argp++] = cp->port;
680 remote_args[argp++] = "-q";
681 remote_args[argp++] = cp->dst;
682 remote_args[argp++] = "gnunet-testbed-helper";
683 remote_args[argp++] = NULL;
684 GNUNET_assert (argp == 6 + 1);
685 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
686 &helper_mst, &helper_exp_cb, cp);
688 if (NULL == cp->helper)
690 GNUNET_free_non_null (cp->port);
691 GNUNET_free_non_null (cp->dst);
698 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
699 cp->msg = &msg->header;
700 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
702 if (NULL == cp->shandle)
705 GNUNET_TESTBED_controller_stop (cp);
713 * Stop the controller process (also will terminate all peers and controllers
714 * dependent on this controller). This function blocks until the testbed has
715 * been fully terminated (!).
717 * @param cproc the controller process handle
720 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cp)
722 if (NULL != cp->shandle)
723 GNUNET_HELPER_send_cancel (cp->shandle);
724 GNUNET_HELPER_stop (cp->helper);
726 GNUNET_CONFIGURATION_destroy (cp->cfg);
727 GNUNET_free_non_null (cp->port);
728 GNUNET_free_non_null (cp->dst);
734 * Start a controller process using the given configuration at the
737 * @param cfg configuration to use
738 * @param host host to run the controller on; This should be the same host if
739 * the controller was previously started with
740 * GNUNET_TESTBED_controller_start; NULL for localhost
741 * @param event_mask bit mask with set of events to call 'cc' for;
742 * or-ed values of "1LL" shifted by the
743 * respective 'enum GNUNET_TESTBED_EventType'
744 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
745 * @param cc controller callback to invoke on events
746 * @param cc_cls closure for cc
747 * @return handle to the controller
749 struct GNUNET_TESTBED_Controller *
750 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
751 struct GNUNET_TESTBED_Host *host,
753 GNUNET_TESTBED_ControllerCallback cc,
756 struct GNUNET_TESTBED_Controller *controller;
757 struct GNUNET_TESTBED_InitMessage *msg;
759 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
761 controller->cc_cls = cc_cls;
762 controller->event_mask = event_mask;
763 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
764 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
765 if (NULL == controller->client)
767 GNUNET_TESTBED_controller_disconnect (controller);
772 host = GNUNET_TESTBED_host_create_by_id_ (0);
775 LOG (GNUNET_ERROR_TYPE_WARNING,
776 "Treating NULL host as localhost. Multiple references to localhost. "
777 " May break when localhost freed before calling disconnect \n");
778 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
782 controller->aux_host = GNUNET_YES;
785 GNUNET_assert (NULL != host);
786 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
787 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
788 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
789 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
790 msg->event_mask = GNUNET_htonll (controller->event_mask);
791 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
797 * Configure shared services at a controller. Using this function,
798 * you can specify that certain services (such as "resolver")
799 * should not be run for each peer but instead be shared
800 * across N peers on the specified host. This function
801 * must be called before any peers are created at the host.
803 * @param controller controller to configure
804 * @param service_name name of the service to share
805 * @param num_peers number of peers that should share one instance
806 * of the specified service (1 for no sharing is the default),
807 * use 0 to disable the service
810 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
811 const char *service_name,
814 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
815 uint16_t service_name_size;
818 service_name_size = strlen (service_name) + 1;
819 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
821 msg = GNUNET_malloc (msg_size);
822 msg->header.size = htons (msg_size);
823 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
824 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
825 msg->num_peers = htonl (num_peers);
826 memcpy (&msg[1], service_name, service_name_size);
827 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
832 * disconnects from the controller.
834 * @param controller handle to controller to stop
837 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
839 struct MessageQueue *mq_entry;
841 if (NULL != controller->th)
842 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
843 /* Clear the message queue */
844 while (NULL != (mq_entry = controller->mq_head))
846 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
849 GNUNET_free (mq_entry->msg);
850 GNUNET_free (mq_entry);
852 if (NULL != controller->client)
853 GNUNET_CLIENT_disconnect (controller->client);
854 GNUNET_CONFIGURATION_destroy (controller->cfg);
855 if (GNUNET_YES == controller->aux_host)
856 GNUNET_TESTBED_host_destroy (controller->host);
857 GNUNET_free (controller);
862 * Register a host with the controller
864 * @param controller the controller handle
865 * @param host the host to register
866 * @param cc the completion callback to call to inform the status of
867 * registration. After calling this callback the registration handle
868 * will be invalid. Cannot be NULL.
869 * @param cc_cls the closure for the cc
870 * @return handle to the host registration which can be used to cancel the
873 struct GNUNET_TESTBED_HostRegistrationHandle *
874 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
875 struct GNUNET_TESTBED_Host *host,
876 GNUNET_TESTBED_HostRegistrationCompletion cc,
879 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
880 struct GNUNET_TESTBED_AddHostMessage *msg;
881 const char *username;
882 const char *hostname;
884 uint16_t user_name_length;
886 if (NULL != controller->rh)
888 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
889 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
891 LOG (GNUNET_ERROR_TYPE_WARNING,
892 "Host hostname: %s already registered\n",
893 (NULL == hostname) ? "localhost" : hostname);
896 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
899 GNUNET_assert (NULL != cc);
903 username = GNUNET_TESTBED_host_get_username_ (host);
904 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
905 user_name_length = 0;
906 if (NULL != username)
908 user_name_length = strlen (username) + 1;
909 msg_size += user_name_length;
911 /* FIXME: what happens when hostname is NULL? localhost */
912 GNUNET_assert (NULL != hostname);
913 msg_size += strlen (hostname) + 1;
914 msg = GNUNET_malloc (msg_size);
915 msg->header.size = htons (msg_size);
916 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
917 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
918 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
919 msg->user_name_length = htons (user_name_length);
920 if (NULL != username)
921 memcpy (&msg[1], username, user_name_length);
922 strcpy (((void *) &msg[1]) + user_name_length, hostname);
923 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
929 * Cancel the pending registration. Note that if the registration message is
930 * already sent to the service the cancellation has only the effect that the
931 * registration completion callback for the registration is never called.
933 * @param handle the registration handle to cancel
936 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
939 if (handle != handle->c->rh)
944 handle->c->rh = NULL;
945 GNUNET_free (handle);
950 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
951 * serialized and compressed
953 * @param master handle to the master controller who creates the association
954 * @param delegated_host requests to which host should be delegated; cannot be NULL
955 * @param slave_host which host is used to run the slave controller; use NULL to
956 * make the master controller connect to the delegated host
957 * @param sxcfg serialized and compressed configuration
958 * @param sxcfg_size the size scfg
959 * @param scfg_size the size of uncompressed serialized configuration
960 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
961 * be started by the master controller; GNUNET_NO if we are just
962 * allowed to use the slave via TCP/IP
965 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
966 struct GNUNET_TESTBED_Host *delegated_host,
967 struct GNUNET_TESTBED_Host *slave_host,
973 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
976 GNUNET_assert (GNUNET_YES ==
977 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
978 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
979 GNUNET_assert (GNUNET_YES ==
980 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
981 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
982 msg = GNUNET_malloc (msg_size);
983 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
984 msg->header.size = htons (msg_size);
985 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
986 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
987 ((NULL != slave_host) ? slave_host : master->host));
988 msg->config_size = htons ((uint16_t) scfg_size);
989 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
990 memcpy (&msg[1], sxcfg, sxcfg_size);
991 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
996 * Compresses given configuration using zlib compress
998 * @param config the serialized configuration
999 * @param size the size of config
1000 * @param xconfig will be set to the compressed configuration (memory is fresly
1002 * @return the size of the xconfig
1005 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1010 xsize = compressBound ((uLong) size);
1011 *xconfig = GNUNET_malloc (xsize);
1012 GNUNET_assert (Z_OK ==
1013 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1014 (const Bytef *) config, (uLongf) size,
1021 * Create a link from slave controller to delegated controller. Whenever the
1022 * master controller is asked to start a peer at the delegated controller the
1023 * request will be routed towards slave controller (if a route exists). The
1024 * slave controller will then route it to the delegated controller. The
1025 * configuration of the slave controller is given and to be used to either
1026 * create the slave controller or to connect to an existing slave controller
1027 * process. 'is_subordinate' specifies if the given slave controller should be
1028 * started and managed by the master controller, or if the slave already has a
1029 * master and this is just a secondary master that is also allowed to use the
1032 * @param master handle to the master controller who creates the association
1033 * @param delegated_host requests to which host should be delegated
1034 * @param slave_host which host is used to run the slave controller
1035 * @param slave_cfg configuration to use for the slave controller
1036 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1037 * by the master controller; GNUNET_NO if we are just
1038 * allowed to use the slave via TCP/IP
1041 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1042 struct GNUNET_TESTBED_Host *delegated_host,
1043 struct GNUNET_TESTBED_Host *slave_host,
1044 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1052 GNUNET_assert (GNUNET_YES ==
1053 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1054 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1055 GNUNET_assert (GNUNET_YES ==
1056 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1057 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1058 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1059 GNUNET_free (config);
1060 GNUNET_assert ((UINT16_MAX -
1061 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1062 >= cc_size); /* Configuration doesn't fit in 1 message */
1063 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1064 (const char *) cconfig,
1065 cc_size, config_size, is_subordinate);
1066 GNUNET_free (cconfig);
1071 * Ask the testbed controller to write the current overlay topology to
1072 * a file. Naturally, the file will only contain a snapshot as the
1073 * topology may evolve all the time.
1075 * @param controller overlay controller to inspect
1076 * @param filename name of the file the topology should
1080 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1081 const char *filename)
1088 * Creates a helper initialization message. Only for testing.
1090 * @param cname the ip address of the controlling host
1091 * @param cfg the configuration that has to used to start the testbed service
1093 * @return the initialization message
1095 struct GNUNET_TESTBED_HelperInit *
1096 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1097 const struct GNUNET_CONFIGURATION_Handle *cfg)
1099 struct GNUNET_TESTBED_HelperInit *msg;
1103 size_t xconfig_size;
1107 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1108 GNUNET_assert (NULL != config);
1110 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1111 GNUNET_free (config);
1112 cname_len = strlen (cname);
1113 msg_size = xconfig_size + cname_len + 1 +
1114 sizeof (struct GNUNET_TESTBED_HelperInit);
1115 msg = GNUNET_realloc (xconfig, msg_size);
1116 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1117 msg->header.size = htons (msg_size);
1118 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1119 msg->cname_size = htons (cname_len);
1120 msg->config_size = htons (config_size);
1121 (void) strcpy ((char *) &msg[1], cname);
1126 /* end of testbed_api.c */