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);
276 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));
330 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);
388 if (0 != ((GNUNET_TESTBED_ET_PEER_START | GNUNET_TESTBED_ET_PEER_STOP)
392 c->cc (c->cc_cls, &event);
399 * Handler for messages from controller (testbed service)
401 * @param cls the controller handler
402 * @param msg message received, NULL on timeout or fatal error
405 message_handler (void *cls, const struct GNUNET_MessageHeader *msg)
407 struct GNUNET_TESTBED_Controller *c = cls;
410 c->in_receive = GNUNET_NO;
411 /* FIXME: Add checks for message integrity */
414 LOG_DEBUG ("Receive timed out or connection to service dropped\n");
418 switch (ntohs (msg->type))
420 case GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM:
422 handle_addhostconfirm (c, (const struct
423 GNUNET_TESTBED_HostConfirmedMessage *) msg);
425 case GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS:
427 handle_opsuccess (c, (const struct
428 GNUNET_TESTBED_GenericOperationSuccessEventMessage
431 case GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS:
433 handle_peer_create_success
434 (c, (const struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *)msg);
436 case GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT:
438 handle_peer_event (c, (const struct GNUNET_TESTBED_PeerEventMessage *) msg);
443 if ((GNUNET_OK == status) && (GNUNET_NO == c->in_receive))
445 c->in_receive = GNUNET_YES;
446 GNUNET_CLIENT_receive (c->client, &message_handler, c,
447 GNUNET_TIME_UNIT_FOREVER_REL);
453 * Function called to notify a client about the connection begin ready to queue
454 * more data. "buf" will be NULL and "size" zero if the connection was closed
455 * for writing in the meantime.
458 * @param size number of bytes available in buf
459 * @param buf where the callee should write the message
460 * @return number of bytes written to buf
463 transmit_ready_notify (void *cls, size_t size, void *buf)
465 struct GNUNET_TESTBED_Controller *c = cls;
466 struct MessageQueue *mq_entry;
469 mq_entry = c->mq_head;
470 GNUNET_assert (NULL != mq_entry);
471 if ((0 == size) && (NULL == buf)) /* Timeout */
473 LOG_DEBUG ("Message sending timed out -- retrying\n");
475 GNUNET_CLIENT_notify_transmit_ready (c->client,
476 ntohs (mq_entry->msg->size),
478 GNUNET_YES, &transmit_ready_notify,
482 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
483 size = ntohs (mq_entry->msg->size);
484 memcpy (buf, mq_entry->msg, size);
485 LOG_DEBUG ("Message of type: %u and size: %u sent\n",
486 ntohs (mq_entry->msg->type), size);
487 GNUNET_free (mq_entry->msg);
488 GNUNET_CONTAINER_DLL_remove (c->mq_head, c->mq_tail, mq_entry);
489 GNUNET_free (mq_entry);
490 mq_entry = c->mq_head;
491 if (NULL != mq_entry)
493 GNUNET_CLIENT_notify_transmit_ready (c->client,
494 ntohs (mq_entry->msg->size),
496 GNUNET_YES, &transmit_ready_notify,
498 if (GNUNET_NO == c->in_receive)
500 c->in_receive = GNUNET_YES;
501 GNUNET_CLIENT_receive (c->client, &message_handler, c,
502 GNUNET_TIME_UNIT_FOREVER_REL);
509 * Queues a message in send queue for sending to the service
511 * @param controller the handle to the controller
512 * @param msg the message to queue
515 GNUNET_TESTBED_queue_message_ (struct GNUNET_TESTBED_Controller *controller,
516 struct GNUNET_MessageHeader *msg)
518 struct MessageQueue *mq_entry;
522 type = ntohs (msg->type);
523 size = ntohs (msg->size);
524 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
525 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
526 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
528 LOG (GNUNET_ERROR_TYPE_DEBUG,
529 "Queueing message of type %u, size %u for sending\n", type,
531 GNUNET_CONTAINER_DLL_insert_tail (controller->mq_head, controller->mq_tail,
533 if (NULL == controller->th)
535 GNUNET_CLIENT_notify_transmit_ready (controller->client, size,
537 GNUNET_YES, &transmit_ready_notify,
543 * Handle for controller process
545 struct GNUNET_TESTBED_ControllerProc
550 struct GNUNET_HELPER_Handle *helper;
553 * The host where the helper is run
555 struct GNUNET_TESTBED_Host *host;
558 * The controller error callback
560 GNUNET_TESTBED_ControllerStatusCallback cb;
563 * The closure for the above callback
568 * The send handle for the helper
570 struct GNUNET_HELPER_SendHandle *shandle;
573 * The message corresponding to send handle
575 struct GNUNET_MessageHeader *msg;
578 * The port number for ssh; used for helpers starting ssh
583 * The ssh destination string; used for helpers starting ssh
588 * The configuration of the running testbed service
590 struct GNUNET_CONFIGURATION_Handle *cfg;
596 * Functions with this signature are called whenever a
597 * complete message is received by the tokenizer.
599 * Do not call GNUNET_SERVER_mst_destroy in callback
602 * @param client identification of the client
603 * @param message the actual message
605 * @return GNUNET_OK on success, GNUNET_SYSERR to stop further processing
607 static int helper_mst (void *cls, void *client,
608 const struct GNUNET_MessageHeader *message)
610 struct GNUNET_TESTBED_ControllerProc *cp = cls;
611 const struct GNUNET_TESTBED_HelperReply *msg;
612 const char *hostname;
617 msg = (const struct GNUNET_TESTBED_HelperReply *) message;
618 GNUNET_assert (sizeof (struct GNUNET_TESTBED_HelperReply)
619 < ntohs (msg->header.size));
620 GNUNET_assert (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_REPLY
621 == ntohs (msg->header.type));
622 config_size = (uLongf) ntohs (msg->config_size);
623 xconfig_size = (uLongf) (ntohs (msg->header.size)
624 - sizeof (struct GNUNET_TESTBED_HelperReply));
625 config = GNUNET_malloc (config_size);
626 GNUNET_assert (Z_OK == uncompress ((Bytef *) config, &config_size,
627 (const Bytef *) &msg[1], xconfig_size));
628 GNUNET_assert (NULL == cp->cfg);
629 cp->cfg = GNUNET_CONFIGURATION_create ();
630 GNUNET_assert (GNUNET_CONFIGURATION_deserialize (cp->cfg, config,
631 config_size, GNUNET_NO));
632 GNUNET_free (config);
633 if ((NULL == cp->host) ||
634 (NULL == (hostname = GNUNET_TESTBED_host_get_hostname_ (cp->host))))
635 hostname = "localhost";
636 /* Change the hostname so that we can connect to it */
637 GNUNET_CONFIGURATION_set_value_string (cp->cfg, "testbed", "hostname",
639 cp->cb (cp->cls, cp->cfg, GNUNET_OK);
645 * Continuation function from GNUNET_HELPER_send()
648 * @param result GNUNET_OK on success,
649 * GNUNET_NO if helper process died
650 * GNUNET_SYSERR during GNUNET_HELPER_stop
653 clear_msg (void *cls, int result)
655 struct GNUNET_TESTBED_ControllerProc *cp = cls;
657 GNUNET_assert (NULL != cp->shandle);
659 GNUNET_free (cp->msg);
664 * Callback that will be called when the helper process dies. This is not called
665 * when the helper process is stoped using GNUNET_HELPER_stop()
667 * @param cls the closure from GNUNET_HELPER_start()
670 helper_exp_cb (void *cls)
672 struct GNUNET_TESTBED_ControllerProc *cp = cls;
673 GNUNET_TESTBED_ControllerStatusCallback cb;
678 GNUNET_TESTBED_controller_stop (cp);
680 cb (cb_cls, NULL, GNUNET_SYSERR);
685 * Starts a controller process at the host. FIXME: add controller start callback
686 * with the configuration with which the controller is started
688 * @param controller_ip the ip address of the controller. Will be set as TRUSTED
689 * host when starting testbed controller at host
690 * @param host the host where the controller has to be started; NULL for
692 * @param cfg template configuration to use for the remote controller; the
693 * remote controller will be started with a slightly modified
694 * configuration (port numbers, unix domain sockets and service home
695 * values are changed as per TESTING library on the remote host)
696 * @param cb function called when the controller is successfully started or
697 * dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
698 * called if cb is called with GNUNET_SYSERR as status. Will never be
699 * called in the same task as 'GNUNET_TESTBED_controller_start'
700 * (synchronous errors will be signalled by returning NULL). This
701 * parameter cannot be NULL.
702 * @param cls closure for above callbacks
703 * @return the controller process handle, NULL on errors
705 struct GNUNET_TESTBED_ControllerProc *
706 GNUNET_TESTBED_controller_start (const char *controller_ip,
707 struct GNUNET_TESTBED_Host *host,
708 const struct GNUNET_CONFIGURATION_Handle *cfg,
709 GNUNET_TESTBED_ControllerStatusCallback cb,
712 struct GNUNET_TESTBED_ControllerProc *cp;
713 struct GNUNET_TESTBED_HelperInit *msg;
715 cp = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_ControllerProc));
716 if ((NULL == host) || (0 == GNUNET_TESTBED_host_get_id_ (host)))
718 char * const binary_argv[] = {
719 "gnunet-testbed-helper", NULL
722 cp->helper = GNUNET_HELPER_start ("gnunet-testbed-helper", binary_argv,
723 &helper_mst, &helper_exp_cb, cp);
727 char *remote_args[6 + 1];
729 const char *username;
730 const char *hostname;
732 username = GNUNET_TESTBED_host_get_username_ (host);
733 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
734 GNUNET_asprintf (&cp->port, "%u", GNUNET_TESTBED_host_get_ssh_port_ (host));
735 if (NULL == username)
736 GNUNET_asprintf (&cp->dst, "%s", hostname);
738 GNUNET_asprintf (&cp->dst, "%s@%s", hostname, username);
740 remote_args[argp++] = "ssh";
741 remote_args[argp++] = "-p";
742 remote_args[argp++] = cp->port;
743 remote_args[argp++] = "-q";
744 remote_args[argp++] = cp->dst;
745 remote_args[argp++] = "gnunet-testbed-helper";
746 remote_args[argp++] = NULL;
747 GNUNET_assert (argp == 6 + 1);
748 cp->helper = GNUNET_HELPER_start ("ssh", remote_args,
749 &helper_mst, &helper_exp_cb, cp);
751 if (NULL == cp->helper)
753 GNUNET_free_non_null (cp->port);
754 GNUNET_free_non_null (cp->dst);
761 msg = GNUNET_TESTBED_create_helper_init_msg_ (controller_ip, cfg);
762 cp->msg = &msg->header;
763 cp->shandle = GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO,
765 if (NULL == cp->shandle)
768 GNUNET_TESTBED_controller_stop (cp);
776 * Stop the controller process (also will terminate all peers and controllers
777 * dependent on this controller). This function blocks until the testbed has
778 * been fully terminated (!).
780 * @param cproc the controller process handle
783 GNUNET_TESTBED_controller_stop (struct GNUNET_TESTBED_ControllerProc *cproc)
785 if (NULL != cproc->shandle)
786 GNUNET_HELPER_send_cancel (cproc->shandle);
787 GNUNET_HELPER_stop (cproc->helper);
788 if (NULL != cproc->cfg)
789 GNUNET_CONFIGURATION_destroy (cproc->cfg);
790 GNUNET_free_non_null (cproc->port);
791 GNUNET_free_non_null (cproc->dst);
797 * Start a controller process using the given configuration at the
800 * @param cfg configuration to use
801 * @param host host to run the controller on; This should be the same host if
802 * the controller was previously started with
803 * GNUNET_TESTBED_controller_start; NULL for localhost
804 * @param event_mask bit mask with set of events to call 'cc' for;
805 * or-ed values of "1LL" shifted by the
806 * respective 'enum GNUNET_TESTBED_EventType'
807 * (i.e. "(1LL << GNUNET_TESTBED_ET_CONNECT) | ...")
808 * @param cc controller callback to invoke on events
809 * @param cc_cls closure for cc
810 * @return handle to the controller
812 struct GNUNET_TESTBED_Controller *
813 GNUNET_TESTBED_controller_connect (const struct GNUNET_CONFIGURATION_Handle *cfg,
814 struct GNUNET_TESTBED_Host *host,
816 GNUNET_TESTBED_ControllerCallback cc,
819 struct GNUNET_TESTBED_Controller *controller;
820 struct GNUNET_TESTBED_InitMessage *msg;
822 controller = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_Controller));
824 controller->cc_cls = cc_cls;
825 controller->event_mask = event_mask;
826 controller->cfg = GNUNET_CONFIGURATION_dup (cfg);
827 controller->client = GNUNET_CLIENT_connect ("testbed", controller->cfg);
828 if (NULL == controller->client)
830 GNUNET_TESTBED_controller_disconnect (controller);
835 host = GNUNET_TESTBED_host_create_by_id_ (0);
838 LOG (GNUNET_ERROR_TYPE_WARNING,
839 "Treating NULL host as localhost. Multiple references to localhost. "
840 " May break when localhost freed before calling disconnect \n");
841 host = GNUNET_TESTBED_host_lookup_by_id_ (0);
845 controller->aux_host = GNUNET_YES;
848 GNUNET_assert (NULL != host);
849 msg = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_InitMessage));
850 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_INIT);
851 msg->header.size = htons (sizeof (struct GNUNET_TESTBED_InitMessage));
852 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
853 msg->event_mask = GNUNET_htonll (controller->event_mask);
854 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
860 * Configure shared services at a controller. Using this function,
861 * you can specify that certain services (such as "resolver")
862 * should not be run for each peer but instead be shared
863 * across N peers on the specified host. This function
864 * must be called before any peers are created at the host.
866 * @param controller controller to configure
867 * @param service_name name of the service to share
868 * @param num_peers number of peers that should share one instance
869 * of the specified service (1 for no sharing is the default),
870 * use 0 to disable the service
873 GNUNET_TESTBED_controller_configure_sharing (struct GNUNET_TESTBED_Controller *controller,
874 const char *service_name,
877 struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
878 uint16_t service_name_size;
881 service_name_size = strlen (service_name) + 1;
882 msg_size = sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage)
884 msg = GNUNET_malloc (msg_size);
885 msg->header.size = htons (msg_size);
886 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE);
887 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (controller->host));
888 msg->num_peers = htonl (num_peers);
889 memcpy (&msg[1], service_name, service_name_size);
890 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
895 * disconnects from the controller.
897 * @param controller handle to controller to stop
900 GNUNET_TESTBED_controller_disconnect (struct GNUNET_TESTBED_Controller *controller)
902 struct MessageQueue *mq_entry;
904 if (NULL != controller->th)
905 GNUNET_CLIENT_notify_transmit_ready_cancel (controller->th);
906 /* Clear the message queue */
907 while (NULL != (mq_entry = controller->mq_head))
909 GNUNET_CONTAINER_DLL_remove (controller->mq_head,
912 GNUNET_free (mq_entry->msg);
913 GNUNET_free (mq_entry);
915 if (NULL != controller->client)
916 GNUNET_CLIENT_disconnect (controller->client);
917 GNUNET_CONFIGURATION_destroy (controller->cfg);
918 if (GNUNET_YES == controller->aux_host)
919 GNUNET_TESTBED_host_destroy (controller->host);
920 GNUNET_free (controller);
925 * Register a host with the controller
927 * @param controller the controller handle
928 * @param host the host to register
929 * @param cc the completion callback to call to inform the status of
930 * registration. After calling this callback the registration handle
931 * will be invalid. Cannot be NULL.
932 * @param cc_cls the closure for the cc
933 * @return handle to the host registration which can be used to cancel the
936 struct GNUNET_TESTBED_HostRegistrationHandle *
937 GNUNET_TESTBED_register_host (struct GNUNET_TESTBED_Controller *controller,
938 struct GNUNET_TESTBED_Host *host,
939 GNUNET_TESTBED_HostRegistrationCompletion cc,
942 struct GNUNET_TESTBED_HostRegistrationHandle *rh;
943 struct GNUNET_TESTBED_AddHostMessage *msg;
944 const char *username;
945 const char *hostname;
947 uint16_t user_name_length;
949 if (NULL != controller->rh)
951 hostname = GNUNET_TESTBED_host_get_hostname_ (host);
952 if (GNUNET_YES == GNUNET_TESTBED_is_host_registered_ (host, controller))
954 LOG (GNUNET_ERROR_TYPE_WARNING,
955 "Host hostname: %s already registered\n",
956 (NULL == hostname) ? "localhost" : hostname);
959 rh = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_HostRegistrationHandle));
962 GNUNET_assert (NULL != cc);
966 username = GNUNET_TESTBED_host_get_username_ (host);
967 msg_size = (sizeof (struct GNUNET_TESTBED_AddHostMessage));
968 user_name_length = 0;
969 if (NULL != username)
971 user_name_length = strlen (username) + 1;
972 msg_size += user_name_length;
974 /* FIXME: what happens when hostname is NULL? localhost */
975 GNUNET_assert (NULL != hostname);
976 msg_size += strlen (hostname) + 1;
977 msg = GNUNET_malloc (msg_size);
978 msg->header.size = htons (msg_size);
979 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST);
980 msg->host_id = htonl (GNUNET_TESTBED_host_get_id_ (host));
981 msg->ssh_port = htons (GNUNET_TESTBED_host_get_ssh_port_ (host));
982 msg->user_name_length = htons (user_name_length);
983 if (NULL != username)
984 memcpy (&msg[1], username, user_name_length);
985 strcpy (((void *) &msg[1]) + user_name_length, hostname);
986 GNUNET_TESTBED_queue_message_ (controller, (struct GNUNET_MessageHeader *) msg);
992 * Cancel the pending registration. Note that if the registration message is
993 * already sent to the service the cancellation has only the effect that the
994 * registration completion callback for the registration is never called.
996 * @param handle the registration handle to cancel
999 GNUNET_TESTBED_cancel_registration (struct GNUNET_TESTBED_HostRegistrationHandle
1002 if (handle != handle->c->rh)
1007 handle->c->rh = NULL;
1008 GNUNET_free (handle);
1013 * Same as the GNUNET_TESTBED_controller_link, however expects configuration in
1014 * serialized and compressed
1016 * @param master handle to the master controller who creates the association
1017 * @param delegated_host requests to which host should be delegated; cannot be NULL
1018 * @param slave_host which host is used to run the slave controller; use NULL to
1019 * make the master controller connect to the delegated host
1020 * @param sxcfg serialized and compressed configuration
1021 * @param sxcfg_size the size scfg
1022 * @param scfg_size the size of uncompressed serialized configuration
1023 * @param is_subordinate GNUNET_YES if the controller at delegated_host should
1024 * be started by the master controller; GNUNET_NO if we are just
1025 * allowed to use the slave via TCP/IP
1028 GNUNET_TESTBED_controller_link_2 (struct GNUNET_TESTBED_Controller *master,
1029 struct GNUNET_TESTBED_Host *delegated_host,
1030 struct GNUNET_TESTBED_Host *slave_host,
1036 struct GNUNET_TESTBED_ControllerLinkMessage *msg;
1039 GNUNET_assert (GNUNET_YES ==
1040 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1041 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1042 GNUNET_assert (GNUNET_YES ==
1043 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1044 msg_size = sxcfg_size + sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1045 msg = GNUNET_malloc (msg_size);
1046 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS);
1047 msg->header.size = htons (msg_size);
1048 msg->delegated_host_id = htonl (GNUNET_TESTBED_host_get_id_ (delegated_host));
1049 msg->slave_host_id = htonl (GNUNET_TESTBED_host_get_id_
1050 ((NULL != slave_host) ? slave_host : master->host));
1051 msg->config_size = htons ((uint16_t) scfg_size);
1052 msg->is_subordinate = (GNUNET_YES == is_subordinate) ? 1 : 0;
1053 memcpy (&msg[1], sxcfg, sxcfg_size);
1054 GNUNET_TESTBED_queue_message_ (master, (struct GNUNET_MessageHeader *) msg);
1059 * Compresses given configuration using zlib compress
1061 * @param config the serialized configuration
1062 * @param size the size of config
1063 * @param xconfig will be set to the compressed configuration (memory is fresly
1065 * @return the size of the xconfig
1068 GNUNET_TESTBED_compress_config_ (const char *config, size_t size,
1073 xsize = compressBound ((uLong) size);
1074 *xconfig = GNUNET_malloc (xsize);
1075 GNUNET_assert (Z_OK ==
1076 compress2 ((Bytef *)* xconfig, (uLongf *) &xsize,
1077 (const Bytef *) config, (uLongf) size,
1084 * Create a link from slave controller to delegated controller. Whenever the
1085 * master controller is asked to start a peer at the delegated controller the
1086 * request will be routed towards slave controller (if a route exists). The
1087 * slave controller will then route it to the delegated controller. The
1088 * configuration of the slave controller is given and to be used to either
1089 * create the slave controller or to connect to an existing slave controller
1090 * process. 'is_subordinate' specifies if the given slave controller should be
1091 * started and managed by the master controller, or if the slave already has a
1092 * master and this is just a secondary master that is also allowed to use the
1095 * @param master handle to the master controller who creates the association
1096 * @param delegated_host requests to which host should be delegated
1097 * @param slave_host which host is used to run the slave controller
1098 * @param slave_cfg configuration to use for the slave controller
1099 * @param is_subordinate GNUNET_YES if the slave should be started (and stopped)
1100 * by the master controller; GNUNET_NO if we are just
1101 * allowed to use the slave via TCP/IP
1104 GNUNET_TESTBED_controller_link (struct GNUNET_TESTBED_Controller *master,
1105 struct GNUNET_TESTBED_Host *delegated_host,
1106 struct GNUNET_TESTBED_Host *slave_host,
1107 const struct GNUNET_CONFIGURATION_Handle *slave_cfg,
1115 GNUNET_assert (GNUNET_YES ==
1116 GNUNET_TESTBED_is_host_registered_ (delegated_host, master));
1117 if ((NULL != slave_host) && (0 != GNUNET_TESTBED_host_get_id_ (slave_host)))
1118 GNUNET_assert (GNUNET_YES ==
1119 GNUNET_TESTBED_is_host_registered_ (slave_host, master));
1120 config = GNUNET_CONFIGURATION_serialize (slave_cfg, &config_size);
1121 cc_size = GNUNET_TESTBED_compress_config_ (config, config_size, &cconfig);
1122 GNUNET_free (config);
1123 GNUNET_assert ((UINT16_MAX -
1124 sizeof (struct GNUNET_TESTBED_ControllerLinkMessage))
1125 >= cc_size); /* Configuration doesn't fit in 1 message */
1126 GNUNET_TESTBED_controller_link_2 (master, delegated_host, slave_host,
1127 (const char *) cconfig,
1128 cc_size, config_size, is_subordinate);
1129 GNUNET_free (cconfig);
1134 * Ask the testbed controller to write the current overlay topology to
1135 * a file. Naturally, the file will only contain a snapshot as the
1136 * topology may evolve all the time.
1138 * @param controller overlay controller to inspect
1139 * @param filename name of the file the topology should
1143 GNUNET_TESTBED_overlay_write_topology_to_file (struct GNUNET_TESTBED_Controller *controller,
1144 const char *filename)
1151 * Creates a helper initialization message. Only for testing.
1153 * @param cname the ip address of the controlling host
1154 * @param cfg the configuration that has to used to start the testbed service
1156 * @return the initialization message
1158 struct GNUNET_TESTBED_HelperInit *
1159 GNUNET_TESTBED_create_helper_init_msg_ (const char *cname,
1160 const struct GNUNET_CONFIGURATION_Handle *cfg)
1162 struct GNUNET_TESTBED_HelperInit *msg;
1166 size_t xconfig_size;
1170 config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
1171 GNUNET_assert (NULL != config);
1173 GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
1174 GNUNET_free (config);
1175 cname_len = strlen (cname);
1176 msg_size = xconfig_size + cname_len + 1 +
1177 sizeof (struct GNUNET_TESTBED_HelperInit);
1178 msg = GNUNET_realloc (xconfig, msg_size);
1179 (void) memmove ( ((void *) &msg[1]) + cname_len + 1, msg, xconfig_size);
1180 msg->header.size = htons (msg_size);
1181 msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_HELPER_INIT);
1182 msg->cname_size = htons (cname_len);
1183 msg->config_size = htons (config_size);
1184 (void) strcpy ((char *) &msg[1], cname);
1189 /* end of testbed_api.c */