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);
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 GNUNET_TESTBED_Peer *peer;
306 GNUNET_assert (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage)
307 == ntohs (msg->header.size));
308 op_id = GNUNET_ntohll (msg->operation_id);
309 for (op = c->op_head; NULL != op; op = op->next)
311 if (op->operation_id == op_id)
314 GNUNET_assert (NULL != op);
316 GNUNET_assert (NULL != peer);
317 GNUNET_assert (peer->unique_id == ntohl (msg->peer_id));
318 if (0 != (c->event_mask & (1L << GNUNET_TESTBED_ET_PEER_START)))
320 struct GNUNET_TESTBED_EventInformation info;
322 info.details.peer_start.host = peer->host;
323 info.details.peer_start.peer = peer;
325 c->cc (c->cc_cls, &info);
327 GNUNET_CONTAINER_DLL_remove (c->op_head, c->op_tail, op);
334 * Handler for messages from controller (testbed service)
336 * @param cls the controller handler
337 * @param msg message received, NULL on timeout or fatal error
340 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
342 struct GNUNET_TESTBED_Controller *c = cls;
345 c->in_receive = GNUNET_NO;
346 /* FIXME: Add checks for message integrity */
349 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
353 switch (ntohs (msg->type))
355 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
357 handle_addhostconfirm (c, (const struct
358 GNUNET_TESTBED_HostConfirmedMessage *) msg);
360 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
362 handle_opsuccess (c, (const struct
363 GNUNET_TESTBED_GenericOperationSuccessEventMessage
366 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
368 handle_peer_create_success
369 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
374 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
376 c->in_receive = GNUNET_YES;
377 GNUNET_CLIENT_receive (c->client, &message_handler, c,
378 GNUNET_TIME_UNIT_FOREVER_REL);
384 * Function called to notify a client about the connection begin ready to queue
385 * more data. "buf" will be NULL and "size" zero if the connection was closed
386 * for writing in the meantime.
389 * @param size number of bytes available in buf
390 * @param buf where the callee should write the message
391 * @return number of bytes written to buf
394 transmit_ready_notify (void *cls, size_t size, void *buf)
396 struct GNUNET_TESTBED_Controller *c = cls;
397 struct MessageQueue *mq_entry;
400 mq_entry = c->mq_head;
401 GNUNET_assert (NULL != mq_entry);
402 if ((0 == size) && (NULL == buf)) /* Timeout */
404 LOG_DEBUG ("Message sending timed out -- retrying\n");
406 GNUNET_CLIENT_notify_transmit_ready (c->client,
407 ntohs (mq_entry->msg->size),
409 GNUNET_YES, &transmit_ready_notify,
413 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
414 size = ntohs (mq_entry->msg->size);
415 memcpy (buf, mq_entry->msg, size);
416 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
417 ntohs (mq_entry->msg->type), size);
418 GNUNET_free (mq_entry->msg);
419 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
420 GNUNET_free (mq_entry);
421 mq_entry = c->mq_head;
422 if (NULL != mq_entry)
424 GNUNET_CLIENT_notify_transmit_ready (c->client,
425 ntohs (mq_entry->msg->size),
427 GNUNET_YES, &transmit_ready_notify,
429 if (GNUNET_NO == c->in_receive)
431 c->in_receive = GNUNET_YES;
432 GNUNET_CLIENT_receive (c->client, &message_handler, c,
433 GNUNET_TIME_UNIT_FOREVER_REL);
440 * Queues a message in send queue for sending to the service
442 * @param controller the handle to the controller
443 * @param msg the message to queue
446 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
447 struct GNUNET_MessageHeader *msg)
449 struct MessageQueue *mq_entry;
453 type = ntohs (msg->type);
454 size = ntohs (msg->size);
455 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
456 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
457 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
459 LOG (GNUNET_ERROR_TYPE_DEBUG,
460 "Queueing message of type %u, size %u for sending\n", type,
462 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
464 if (NULL == controller->th)
466 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
468 GNUNET_YES, &transmit_ready_notify,
474 * Handle for controller process
476 struct GNUNET_TESTBED_ControllerProc
481 struct GNUNET_HELPER_Handle *helper;
484 * The host where the helper is run
486 struct GNUNET_TESTBED_Host *host;
489 * The controller error callback
491 GNUNET_TESTBED_ControllerStatusCallback cb;
494 * The closure for the above callback
499 * The send handle for the helper
501 struct GNUNET_HELPER_SendHandle *shandle;
504 * The message corresponding to send handle
506 struct GNUNET_MessageHeader *msg;
509 * The port number for ssh; used for helpers starting ssh
514 * The ssh destination string; used for helpers starting ssh
519 * The configuration of the running testbed service
521 struct GNUNET_CONFIGURATION_Handle *cfg;
527 * Functions with this signature are called whenever a
528 * complete message is received by the tokenizer.
530 * Do not call GNUNET_SERVER_mst_destroy in callback
533 * @param client identification of the client
534 * @param message the actual message
536 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
538 static int helper_mst (void *cls, void *client,
539 const struct GNUNET_MessageHeader *message)
541 struct GNUNET_TESTBED_ControllerProc *cp = cls;
542 const struct GNUNET_TESTBED_HelperReply *msg;
543 const char *hostname;
548 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
549 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
550 < ntohs (msg->header.size));
551 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
552 == ntohs (msg->header.type));
553 config_size = (uLongf) ntohs (msg->config_size);
554 xconfig_size = (uLongf) (ntohs (msg->header.size)
555 - sizeof (struct GNUNET_TESTBED_HelperReply));
556 config = GNUNET_malloc (config_size);
557 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
558 (const Bytef *) &msg[1], xconfig_size));
559 GNUNET_assert (NULL == cp->cfg);
560 cp->cfg = GNUNET_CONFIGURATION_create ();
561 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
562 config_size, GNUNET_NO));
563 GNUNET_free (config);
564 if ((NULL == cp->host) ||
565 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
566 hostname = "localhost";
567 /* Change the hostname so that we can connect to it */
568 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
570 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
576 * Continuation function from GNUNET_HELPER_send()
579 * @param result GNUNET_OK on success,
580 * GNUNET_NO if helper process died
581 * GNUNET_SYSERR during GNUNET_HELPER_stop
584 clear_msg (void *cls, int result)
586 struct GNUNET_TESTBED_ControllerProc *cp = cls;
588 GNUNET_assert (NULL != cp->shandle);
590 GNUNET_free (cp->msg);
595 * Callback that will be called when the helper process dies. This is not called
596 * when the helper process is stoped using GNUNET_HELPER_stop()
598 * @param cls the closure from GNUNET_HELPER_start()
601 helper_exp_cb (void *cls)
603 struct GNUNET_TESTBED_ControllerProc *cp = cls;
604 GNUNET_TESTBED_ControllerStatusCallback cb;
609 GNUNET_TESTBED_controller_stop (cp);
611 cb (cb_cls, NULL, GNUNET_SYSERR);
616 * Starts a controller process at the host. FIXME: add controller start callback
617 * with the configuration with which the controller is started
619 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
620 * host when starting testbed controller at host
621 * @param host the host where the controller has to be started; NULL for
623 * @param cfg template configuration to use for the remote controller; the
624 * remote controller will be started with a slightly modified
625 * configuration (port numbers, unix domain sockets and service home
626 * values are changed as per TESTING library on the remote host)
627 * @param cb function called when the controller is successfully started or
628 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
629 * called if cb is called with GNUNET_SYSERR as status. Will never be
630 * called in the same task as 'GNUNET_TESTBED_controller_start'
631 * (synchronous errors will be signalled by returning NULL). This
632 * parameter cannot be NULL.
633 * @param cls closure for above callbacks
634 * @return the controller process handle, NULL on errors
636 struct GNUNET_TESTBED_ControllerProc *
637 GNUNET_TESTBED_controller_start (const char *controller_ip,
638 struct GNUNET_TESTBED_Host *host,
639 const struct GNUNET_CONFIGURATION_Handle *cfg,
640 GNUNET_TESTBED_ControllerStatusCallback cb,
643 struct GNUNET_TESTBED_ControllerProc *cp;
644 struct GNUNET_TESTBED_HelperInit *msg;
646 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
647 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
649 char * const binary_argv[] = {
650 "gnunet-testbed-helper", NULL
653 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
654 &helper_mst, &helper_exp_cb, cp);
658 char *remote_args[6 + 1];
660 const char *username;
661 const char *hostname;
663 username = GNUNET_TESTBED_host_get_username_ (host);
664 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
665 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
666 if (NULL == username)
667 GNUNET_asprintf (&cp->dst, "%s", hostname);
669 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
671 remote_args[argp++] = "ssh";
672 remote_args[argp++] = "-p";
673 remote_args[argp++] = cp->port;
674 remote_args[argp++] = "-q";
675 remote_args[argp++] = cp->dst;
676 remote_args[argp++] = "gnunet-testbed-helper";
677 remote_args[argp++] = NULL;
678 GNUNET_assert (argp == 6 + 1);
679 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
680 &helper_mst, &helper_exp_cb, cp);
682 if (NULL == cp->helper)
684 GNUNET_free_non_null (cp->port);
685 GNUNET_free_non_null (cp->dst);
692 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
693 cp->msg = &msg->header;
694 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
696 if (NULL == cp->shandle)
699 GNUNET_TESTBED_controller_stop (cp);
707 * Stop the controller process (also will terminate all peers and controllers
708 * dependent on this controller). This function blocks until the testbed has
709 * been fully terminated (!).
711 * @param cproc the controller process handle
714 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cp)
716 if (NULL != cp->shandle)
717 GNUNET_HELPER_send_cancel (cp->shandle);
718 GNUNET_HELPER_stop (cp->helper);
720 GNUNET_CONFIGURATION_destroy (cp->cfg);
721 GNUNET_free_non_null (cp->port);
722 GNUNET_free_non_null (cp->dst);
728 * Start a controller process using the given configuration at the
731 * @param cfg configuration to use
732 * @param host host to run the controller on; This should be the same host if
733 * the controller was previously started with
734 * GNUNET_TESTBED_controller_start; NULL for localhost
735 * @param event_mask bit mask with set of events to call 'cc' for;
736 * or-ed values of "1LL" shifted by the
737 * respective 'enum GNUNET_TESTBED_EventType'
738 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
739 * @param cc controller callback to invoke on events
740 * @param cc_cls closure for cc
741 * @return handle to the controller
743 struct GNUNET_TESTBED_Controller *
744 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
745 struct GNUNET_TESTBED_Host *host,
747 GNUNET_TESTBED_ControllerCallback cc,
750 struct GNUNET_TESTBED_Controller *controller;
751 struct GNUNET_TESTBED_InitMessage *msg;
753 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
755 controller->cc_cls = cc_cls;
756 controller->event_mask = event_mask;
757 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
758 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
759 if (NULL == controller->client)
761 GNUNET_TESTBED_controller_disconnect (controller);
766 host = GNUNET_TESTBED_host_create_by_id_ (0);
769 LOG (GNUNET_ERROR_TYPE_WARNING,
770 "Treating NULL host as localhost. Multiple references to localhost. "
771 " May break when localhost freed before calling disconnect \n");
772 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
776 controller->aux_host = GNUNET_YES;
779 GNUNET_assert (NULL != host);
780 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
781 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
782 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
783 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
784 msg->event_mask = GNUNET_htonll (controller->event_mask);
785 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
791 * Configure shared services at a controller. Using this function,
792 * you can specify that certain services (such as "resolver")
793 * should not be run for each peer but instead be shared
794 * across N peers on the specified host. This function
795 * must be called before any peers are created at the host.
797 * @param controller controller to configure
798 * @param service_name name of the service to share
799 * @param num_peers number of peers that should share one instance
800 * of the specified service (1 for no sharing is the default),
801 * use 0 to disable the service
804 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
805 const char *service_name,
808 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
809 uint16_t service_name_size;
812 service_name_size = strlen (service_name) + 1;
813 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
815 msg = GNUNET_malloc (msg_size);
816 msg->header.size = htons (msg_size);
817 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
818 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
819 msg->num_peers = htonl (num_peers);
820 memcpy (&msg[1], service_name, service_name_size);
821 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
826 * disconnects from the controller.
828 * @param controller handle to controller to stop
831 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
833 struct MessageQueue *mq_entry;
835 if (NULL != controller->th)
836 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
837 /* Clear the message queue */
838 while (NULL != (mq_entry = controller->mq_head))
840 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
843 GNUNET_free (mq_entry->msg);
844 GNUNET_free (mq_entry);
846 if (NULL != controller->client)
847 GNUNET_CLIENT_disconnect (controller->client);
848 GNUNET_CONFIGURATION_destroy (controller->cfg);
849 if (GNUNET_YES == controller->aux_host)
850 GNUNET_TESTBED_host_destroy (controller->host);
851 GNUNET_free (controller);
856 * Register a host with the controller
858 * @param controller the controller handle
859 * @param host the host to register
860 * @param cc the completion callback to call to inform the status of
861 * registration. After calling this callback the registration handle
862 * will be invalid. Cannot be NULL.
863 * @param cc_cls the closure for the cc
864 * @return handle to the host registration which can be used to cancel the
867 struct GNUNET_TESTBED_HostRegistrationHandle *
868 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
869 struct GNUNET_TESTBED_Host *host,
870 GNUNET_TESTBED_HostRegistrationCompletion cc,
873 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
874 struct GNUNET_TESTBED_AddHostMessage *msg;
875 const char *username;
876 const char *hostname;
878 uint16_t user_name_length;
880 if (NULL != controller->rh)
882 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
883 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
885 LOG (GNUNET_ERROR_TYPE_WARNING,
886 "Host hostname: %s already registered\n",
887 (NULL == hostname) ? "localhost" : hostname);
890 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
893 GNUNET_assert (NULL != cc);
897 username = GNUNET_TESTBED_host_get_username_ (host);
898 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
899 user_name_length = 0;
900 if (NULL != username)
902 user_name_length = strlen (username) + 1;
903 msg_size += user_name_length;
905 /* FIXME: what happens when hostname is NULL? localhost */
906 GNUNET_assert (NULL != hostname);
907 msg_size += strlen (hostname) + 1;
908 msg = GNUNET_malloc (msg_size);
909 msg->header.size = htons (msg_size);
910 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
911 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
912 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
913 msg->user_name_length = htons (user_name_length);
914 if (NULL != username)
915 memcpy (&msg[1], username, user_name_length);
916 strcpy (((void *) &msg[1]) + user_name_length, hostname);
917 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
923 * Cancel the pending registration. Note that if the registration message is
924 * already sent to the service the cancellation has only the effect that the
925 * registration completion callback for the registration is never called.
927 * @param handle the registration handle to cancel
930 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
933 if (handle != handle->c->rh)
938 handle->c->rh = NULL;
939 GNUNET_free (handle);
944 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
945 * serialized and compressed
947 * @param master handle to the master controller who creates the association
948 * @param delegated_host requests to which host should be delegated; cannot be NULL
949 * @param slave_host which host is used to run the slave controller; use NULL to
950 * make the master controller connect to the delegated host
951 * @param sxcfg serialized and compressed configuration
952 * @param sxcfg_size the size scfg
953 * @param scfg_size the size of uncompressed serialized configuration
954 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
955 * be started by the master controller; GNUNET_NO if we are just
956 * allowed to use the slave via TCP/IP
959 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
960 struct GNUNET_TESTBED_Host *delegated_host,
961 struct GNUNET_TESTBED_Host *slave_host,
967 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
970 GNUNET_assert (GNUNET_YES ==
971 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
972 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
973 GNUNET_assert (GNUNET_YES ==
974 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
975 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
976 msg = GNUNET_malloc (msg_size);
977 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
978 msg->header.size = htons (msg_size);
979 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
980 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
981 ((NULL != slave_host) ? slave_host : master->host));
982 msg->config_size = htons ((uint16_t) scfg_size);
983 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
984 memcpy (&msg[1], sxcfg, sxcfg_size);
985 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
990 * Compresses given configuration using zlib compress
992 * @param config the serialized configuration
993 * @param size the size of config
994 * @param xconfig will be set to the compressed configuration (memory is fresly
996 * @return the size of the xconfig
999 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1004 xsize = compressBound ((uLong) size);
1005 *xconfig = GNUNET_malloc (xsize);
1006 GNUNET_assert (Z_OK ==
1007 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1008 (const Bytef *) config, (uLongf) size,
1015 * Create a link from slave controller to delegated controller. Whenever the
1016 * master controller is asked to start a peer at the delegated controller the
1017 * request will be routed towards slave controller (if a route exists). The
1018 * slave controller will then route it to the delegated controller. The
1019 * configuration of the slave controller is given and to be used to either
1020 * create the slave controller or to connect to an existing slave controller
1021 * process. 'is_subordinate' specifies if the given slave controller should be
1022 * started and managed by the master controller, or if the slave already has a
1023 * master and this is just a secondary master that is also allowed to use the
1026 * @param master handle to the master controller who creates the association
1027 * @param delegated_host requests to which host should be delegated
1028 * @param slave_host which host is used to run the slave controller
1029 * @param slave_cfg configuration to use for the slave controller
1030 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1031 * by the master controller; GNUNET_NO if we are just
1032 * allowed to use the slave via TCP/IP
1035 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1036 struct GNUNET_TESTBED_Host *delegated_host,
1037 struct GNUNET_TESTBED_Host *slave_host,
1038 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1046 GNUNET_assert (GNUNET_YES ==
1047 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1048 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1049 GNUNET_assert (GNUNET_YES ==
1050 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1051 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1052 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1053 GNUNET_free (config);
1054 GNUNET_assert ((UINT16_MAX -
1055 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1056 >= cc_size); /* Configuration doesn't fit in 1 message */
1057 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1058 (const char *) cconfig,
1059 cc_size, config_size, is_subordinate);
1060 GNUNET_free (cconfig);
1065 * Ask the testbed controller to write the current overlay topology to
1066 * a file. Naturally, the file will only contain a snapshot as the
1067 * topology may evolve all the time.
1069 * @param controller overlay controller to inspect
1070 * @param filename name of the file the topology should
1074 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1075 const char *filename)
1082 * Creates a helper initialization message. Only for testing.
1084 * @param cname the ip address of the controlling host
1085 * @param cfg the configuration that has to used to start the testbed service
1087 * @return the initialization message
1089 struct GNUNET_TESTBED_HelperInit *
1090 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1091 const struct GNUNET_CONFIGURATION_Handle *cfg)
1093 struct GNUNET_TESTBED_HelperInit *msg;
1097 size_t xconfig_size;
1101 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1102 GNUNET_assert (NULL != config);
1104 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1105 GNUNET_free (config);
1106 cname_len = strlen (cname);
1107 msg_size = xconfig_size + cname_len + 1 +
1108 sizeof (struct GNUNET_TESTBED_HelperInit);
1109 msg = GNUNET_realloc (xconfig, msg_size);
1110 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1111 msg->header.size = htons (msg_size);
1112 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1113 msg->cname_size = htons (cname_len);
1114 msg->config_size = htons (config_size);
1115 (void) strcpy ((char *) &msg[1], cname);
1120 /* end of testbed_api.c */