2 This file is part of GNUnet.
3 (C) 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 2, 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/gnunet-service-testbed.c
23 * @brief implementation of the TESTBED service
24 * @author Sree Harsha Totakura
28 #include "gnunet_service_lib.h"
29 #include "gnunet_server_lib.h"
32 #include "gnunet_testbed_service.h"
34 #include "testbed_api.h"
35 #include "testbed_api_hosts.h"
36 #include "gnunet_testing_lib-new.h"
41 #define LOG(kind,...) \
42 GNUNET_log (kind, __VA_ARGS__)
47 #define LOG_DEBUG(...) \
48 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
51 #define LIST_GROW_STEP 10
56 * The client handle associated with this context
58 struct GNUNET_SERVER_Client *client;
61 * The network address of the master controller
66 * The TESTING system handle for starting peers locally
68 struct GNUNET_TESTING_System *system;
71 * Event mask of event to be responded in this context
76 * Our host id according to this context
83 * The message queue for sending messages to clients
88 * The message to be sent
90 struct GNUNET_MessageHeader *msg;
93 * The client to send the message to
95 struct GNUNET_SERVER_Client *client;
98 * next pointer for DLL
100 struct MessageQueue *next;
103 * prev pointer for DLL
105 struct MessageQueue *prev;
110 * The structure for identifying a shared service
115 * The name of the shared service
120 * Number of shared peers per instance of the shared service
125 * Number of peers currently sharing the service
127 uint32_t num_sharing;
142 * The host destination is reachable thru
149 * Structure representing a connected(directly-linked) controller
154 * The controller process handle if we had started the controller
156 struct GNUNET_TESTBED_ControllerProc *controller_proc;
159 * The controller handle
161 struct GNUNET_TESTBED_Controller *controller;
164 * The id of the host this controller is running on
171 * Slave startup context
176 * The slave corresponding to this context
181 * The configuration used as a template while startup
183 struct GNUNET_CONFIGURATION_Handle *cfg;
188 * States of LCFContext
193 * The Context has been initialized; Nothing has been done on it
198 * Delegated host has been registered at the forwarding controller
200 DELEGATED_HOST_REGISTERED,
203 * The context has been finished (may have error)
211 * Link controllers request forwarding context
216 * The serialized and compressed configuration
221 * The gateway which will pass the link message to delegated host
223 struct Slave *gateway;
226 * The host registration handle while registered hosts in this context
228 struct GNUNET_TESTBED_HostRegistrationHandle *rhandle;
231 * The size of the compressed serialized configuration
236 * The size of the uncompressed configuration
241 * Should the delegated host be started by the slave host?
246 * The state of this context
248 enum LCFContextState state;
253 uint32_t delegated_host_id;
260 * Structure of a queue entry in LCFContext request queue
262 struct LCFContextQueue
267 struct LCFContext *lcf;
272 struct LCFContextQueue *next;
277 struct LCFContextQueue *prev;
282 * A locally started peer
287 * The peer handle from testing API
289 struct GNUNET_TESTING_Peer *peer;
292 * The modified (by GNUNET_TESTING_peer_configure) configuration this peer is
295 struct GNUNET_CONFIGURATION_Handle *cfg;
298 * Our local reference id for this peer
306 * The master context; generated with the first INIT message
308 static struct Context *master_context;
317 static struct GNUNET_DISK_FileHandle *fh;
320 * Current Transmit Handle; NULL if no notify transmit exists currently
322 static struct GNUNET_SERVER_TransmitHandle *transmit_handle;
329 * The head for the LCF queue
331 static struct LCFContextQueue *lcfq_head;
334 * The tail for the LCF queue
336 static struct LCFContextQueue *lcfq_tail;
339 * The message queue head
341 static struct MessageQueue *mq_head;
344 * The message queue tail
346 static struct MessageQueue *mq_tail;
351 static struct GNUNET_TESTBED_Host **host_list;
356 static struct Route **route_list;
359 * A list of directly linked neighbours
361 static struct Slave **slave_list;
364 * A list of peers we own locally
366 static struct Peer **peer_list;
369 * The hashmap of shared services
371 static struct GNUNET_CONTAINER_MultiHashMap *ss_map;
374 * The size of the host list
376 static uint32_t host_list_size;
379 * The size of the route list
381 static uint32_t route_list_size;
384 * The size of directly linked neighbours list
386 static uint32_t slave_list_size;
389 * The size of the peer list
391 static uint32_t peer_list_size;
398 * The lcf_task handle
400 static GNUNET_SCHEDULER_TaskIdentifier lcf_proc_task_id;
403 * The shutdown task handle
405 static GNUNET_SCHEDULER_TaskIdentifier shutdown_task_id;
409 * Function called to notify a client about the connection begin ready to queue
410 * more data. "buf" will be NULL and "size" zero if the connection was closed
411 * for writing in the meantime.
414 * @param size number of bytes available in buf
415 * @param buf where the callee should write the message
416 * @return number of bytes written to buf
419 transmit_ready_notify (void *cls, size_t size, void *buf)
421 struct MessageQueue *mq_entry;
423 transmit_handle = NULL;
425 GNUNET_assert (NULL != mq_entry);
428 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
429 size = ntohs (mq_entry->msg->size);
430 memcpy (buf, mq_entry->msg, size);
431 GNUNET_free (mq_entry->msg);
432 GNUNET_CONTAINER_DLL_remove (mq_head, mq_tail, mq_entry);
433 GNUNET_free (mq_entry);
435 if (NULL != mq_entry)
437 GNUNET_SERVER_notify_transmit_ready (mq_entry->client,
438 ntohs (mq_entry->msg->size),
439 GNUNET_TIME_UNIT_FOREVER_REL,
440 &transmit_ready_notify, NULL);
446 * Queues a message in send queue for sending to the service
448 * @param client the client to whom the queued message has to be sent
449 * @param msg the message to queue
452 queue_message (struct GNUNET_SERVER_Client *client,
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 mq_entry->client = client;
466 LOG_DEBUG ( "Queueing message of type %u, size %u for sending\n", type,
468 GNUNET_CONTAINER_DLL_insert_tail (mq_head, mq_tail, mq_entry);
469 if (NULL == transmit_handle)
471 GNUNET_SERVER_notify_transmit_ready (client, size,
472 GNUNET_TIME_UNIT_FOREVER_REL,
473 &transmit_ready_notify, NULL);
478 * Similar to GNUNET_realloc; however clears tail part of newly allocated memory
480 * @param ptr the memory block to realloc
481 * @param size the size of ptr
482 * @param new_size the size to which ptr has to be realloc'ed
483 * @return the newly reallocated memory block
486 TESTBED_realloc (void *ptr, size_t size, size_t new_size)
488 ptr = GNUNET_realloc (ptr, new_size);
490 ptr = memset (ptr + size, 0, new_size - size);
496 * Function to add a host to the current list of known hosts
498 * @param host the host to add
499 * @return GNUNET_OK on success; GNUNET_SYSERR on failure due to host-id
503 host_list_add (struct GNUNET_TESTBED_Host *host)
507 host_id = GNUNET_TESTBED_host_get_id_ (host);
508 if (host_list_size <= host_id)
511 TESTBED_realloc (host_list,
512 sizeof (struct GNUNET_TESTBED_Host *) * host_list_size,
513 sizeof (struct GNUNET_TESTBED_Host *) *
514 (host_list_size + LIST_GROW_STEP));
515 host_list_size += LIST_GROW_STEP;
517 if (NULL != host_list[host_id])
519 LOG_DEBUG ("A host with id: %u already exists\n", host_id);
520 return GNUNET_SYSERR;
522 host_list[host_id] = host;
528 * Adds a route to the route list
530 * @param route the route to add
533 route_list_add (struct Route *route)
535 if (route->dest >= route_list_size)
538 TESTBED_realloc (route_list,
539 sizeof (struct Route *) * route_list_size,
540 sizeof (struct Route *) *
541 (route_list_size + LIST_GROW_STEP));
542 route_list_size += LIST_GROW_STEP;
544 GNUNET_assert (NULL == route_list[route->dest]);
545 route_list[route->dest] = route;
550 * Adds a slave to the slave array
552 * @param slave the slave controller to add
555 slave_list_add (struct Slave *slave)
557 if (slave->host_id >= slave_list_size)
559 slave_list = TESTBED_realloc (slave_list,
560 sizeof (struct Slave *) *slave_list_size,
561 sizeof (struct Slave *) *
562 (slave_list_size + LIST_GROW_STEP));
563 slave_list_size += LIST_GROW_STEP;
565 GNUNET_assert (NULL == slave_list[slave->host_id]);
566 slave_list[slave->host_id] = slave;
571 * Adds a peer to the peer array
573 * @param peer the peer to add
576 peer_list_add (struct Peer *peer)
578 if (peer->id >= peer_list_size)
580 peer_list = TESTBED_realloc (peer_list,
581 sizeof (struct Peer *) * peer_list_size,
582 sizeof (struct Peer *) *
583 (peer_list_size + LIST_GROW_STEP));
584 peer_list_size += LIST_GROW_STEP;
586 GNUNET_assert (NULL == peer_list[peer->id]);
587 peer_list[peer->id] = peer;
592 * Routes message to a host given its host_id
594 * @param host_id the id of the destination host
595 * @param msg the message to be routed
598 route_message (uint32_t host_id, const struct GNUNET_MessageHeader *msg)
605 * The Link Controller forwarding task
607 * @param cls the LCFContext
608 * @param tc the Task context from scheduler
611 lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
615 * Completion callback for host registrations while forwarding Link Controller messages
617 * @param cls the LCFContext
618 * @param emsg the error message; NULL if host registration is successful
621 lcf_proc_cc (void *cls, const char *emsg)
623 struct LCFContext *lcf = cls;
626 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
632 LOG (GNUNET_ERROR_TYPE_WARNING,
633 "Host registration failed with message: %s\n", emsg);
634 lcf->state = FINISHED;
635 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
638 lcf->state = DELEGATED_HOST_REGISTERED;
639 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
642 GNUNET_assert (0); /* Shouldn't reach here */
648 * The Link Controller forwarding task
650 * @param cls the LCFContext
651 * @param tc the Task context from scheduler
654 lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
656 struct LCFContext *lcf = cls;
657 struct LCFContextQueue *lcfq;
659 lcf_proc_task_id = GNUNET_SCHEDULER_NO_TASK;
664 GNUNET_TESTBED_is_host_registered_ (host_list[lcf->delegated_host_id],
665 lcf->gateway->controller))
668 GNUNET_TESTBED_register_host (lcf->gateway->controller,
669 host_list[lcf->delegated_host_id],
674 lcf->state = DELEGATED_HOST_REGISTERED;
675 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
678 case DELEGATED_HOST_REGISTERED:
679 GNUNET_TESTBED_controller_link_2 (lcf->gateway->controller,
680 host_list[lcf->delegated_host_id],
681 host_list[lcf->gateway->host_id],
682 lcf->sxcfg, lcf->sxcfg_size,
684 lcf->is_subordinate);
685 lcf->state = FINISHED;
688 GNUNET_assert (lcfq->lcf == lcf);
689 GNUNET_free (lcf->sxcfg);
691 GNUNET_CONTAINER_DLL_remove (lcfq_head, lcfq_tail, lcfq);
693 if (NULL != lcfq_head)
695 GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq_head->lcf);
701 * Callback for event from slave controllers
703 * @param cls struct Slave *
704 * @param event information about the event
707 slave_event_callback(void *cls,
708 const struct GNUNET_TESTBED_EventInformation *event)
715 * Callback to signal successfull startup of the controller process
717 * @param cls the closure from GNUNET_TESTBED_controller_start()
718 * @param cfg the configuration with which the controller has been started;
719 * NULL if status is not GNUNET_OK
720 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
721 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
724 slave_status_callback (void *cls,
725 const struct GNUNET_CONFIGURATION_Handle *cfg,
728 struct SlaveContext *sc = cls;
730 if (GNUNET_SYSERR == status)
732 sc->slave->controller_proc = NULL;
733 LOG (GNUNET_ERROR_TYPE_WARNING,
734 "Unexpected slave shutdown\n");
735 GNUNET_SCHEDULER_shutdown (); /* We too shutdown */
738 GNUNET_CONFIGURATION_destroy (sc->cfg);
739 sc->slave->controller =
740 GNUNET_TESTBED_controller_connect (cfg, host_list[sc->slave->host_id],
741 master_context->event_mask,
742 &slave_event_callback, sc->slave);
748 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_INIT messages
751 * @param client identification of the client
752 * @param message the actual message
755 handle_init (void *cls,
756 struct GNUNET_SERVER_Client *client,
757 const struct GNUNET_MessageHeader *message)
759 const struct GNUNET_TESTBED_InitMessage *msg;
760 struct GNUNET_TESTBED_Host *host;
764 if (NULL != master_context)
767 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
770 msg = (const struct GNUNET_TESTBED_InitMessage *) message;
771 master_context = GNUNET_malloc (sizeof (struct Context));
772 master_context->client = client;
773 master_context->host_id = ntohl (msg->host_id);
774 GNUNET_assert (GNUNET_OK ==
775 GNUNET_SERVER_client_get_address (client, &addr, &addrlen));
776 master_context->master_ip = GNUNET_malloc (NI_MAXHOST);
777 if (0 != getnameinfo (addr, addrlen, master_context->master_ip, NI_MAXHOST,
778 NULL, 0, NI_NUMERICHOST))
780 LOG (GNUNET_ERROR_TYPE_WARNING,
781 "Cannot determine the ip of master controller: %s\n", STRERROR (errno));
783 GNUNET_free (master_context->master_ip);
787 if (0 == strcasecmp (master_context->master_ip, "localhost"))
788 { /* Hack for connections via unix sockets */
789 LOG_DEBUG ("May be using local sockets - assuming loopback for master ip\n");
790 GNUNET_free (master_context->master_ip);
791 master_context->master_ip = strdup ("127.0.0.1");
793 LOG_DEBUG ("Master Controller IP: %s\n", master_context->master_ip);
794 master_context->system =
795 GNUNET_TESTING_system_create ("testbed", master_context->master_ip);
796 host = GNUNET_TESTBED_host_create_with_id (master_context->host_id,
798 host_list_add (host);
799 master_context->event_mask = GNUNET_ntohll (msg->event_mask);
800 GNUNET_SERVER_client_keep (client);
801 LOG_DEBUG ("Created master context with host ID: %u\n",
802 master_context->host_id);
803 GNUNET_SERVER_receive_done (client, GNUNET_OK);
808 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
811 * @param client identification of the client
812 * @param message the actual message
815 handle_add_host (void *cls,
816 struct GNUNET_SERVER_Client *client,
817 const struct GNUNET_MessageHeader *message)
819 struct GNUNET_TESTBED_Host *host;
820 const struct GNUNET_TESTBED_AddHostMessage *msg;
821 struct GNUNET_TESTBED_HostConfirmedMessage *reply;
826 uint16_t username_length;
827 uint16_t hostname_length;
830 msg = (const struct GNUNET_TESTBED_AddHostMessage *) message;
831 username_length = ntohs (msg->user_name_length);
832 username_length = (0 == username_length) ? 0 : username_length + 1;
833 username = (char *) &(msg[1]);
834 hostname = username + username_length;
835 if (ntohs (message->size) <=
836 (sizeof (struct GNUNET_TESTBED_AddHostMessage) + username_length))
839 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
842 hostname_length = ntohs (message->size)
843 - (sizeof (struct GNUNET_TESTBED_AddHostMessage) + username_length);
844 if (strlen (hostname) != hostname_length - 1)
847 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
850 host_id = ntohl (msg->host_id);
851 LOG_DEBUG ("Received ADDHOST message\n");
852 LOG_DEBUG ("-------host id: %u\n", host_id);
853 if (NULL != hostname) LOG_DEBUG ("-------hostname: %s\n", hostname);
854 if (0 != username_length) LOG_DEBUG ("-------username: %s\n", username);
855 else LOG_DEBUG ("-------username: NULL\n");
856 LOG_DEBUG ("-------ssh port: %u\n", ntohs (msg->ssh_port));
857 host = GNUNET_TESTBED_host_create_with_id (host_id, hostname, username,
858 ntohs (msg->ssh_port));
859 GNUNET_SERVER_receive_done (client, GNUNET_OK);
860 reply_size = sizeof (struct GNUNET_TESTBED_HostConfirmedMessage);
861 if (GNUNET_OK != host_list_add (host))
863 /* We are unable to add a host */
864 emsg = "A host exists with given host-id";
865 LOG_DEBUG ("%s: %u", emsg, host_id);
866 GNUNET_TESTBED_host_destroy (host);
867 reply_size += strlen (emsg) + 1;
868 reply = GNUNET_malloc (reply_size);
869 memcpy (&reply[1], emsg, strlen (emsg) + 1);
872 reply = GNUNET_malloc (reply_size);
873 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM);
874 reply->header.size = htons (reply_size);
875 reply->host_id = htonl (host_id);
876 queue_message (client, (struct GNUNET_MessageHeader *) reply);
881 * Iterator over hash map entries.
884 * @param key current key code
885 * @param value value in the hash map
886 * @return GNUNET_YES if we should continue to
890 int ss_exists_iterator (void *cls,
891 const struct GNUNET_HashCode * key,
894 struct SharedService *queried_ss = cls;
895 struct SharedService *ss = value;
897 if (0 == strcmp (ss->name, queried_ss->name))
905 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
908 * @param client identification of the client
909 * @param message the actual message
912 handle_configure_shared_service (void *cls,
913 struct GNUNET_SERVER_Client *client,
914 const struct GNUNET_MessageHeader *message)
916 const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
917 struct SharedService *ss;
919 struct GNUNET_HashCode hash;
921 uint16_t service_name_size;
923 msg = (const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *) message;
924 msg_size = ntohs (message->size);
925 if (msg_size <= sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage))
928 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
931 service_name_size = msg_size -
932 sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage);
933 service_name = (char *) &msg[1];
934 if ('\0' != service_name[service_name_size - 1])
937 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
940 LOG_DEBUG ("Received service sharing request for %s, with %d peers\n",
941 service_name, ntohl (msg->num_peers));
942 if (ntohl (msg->host_id) != master_context->host_id)
944 route_message (ntohl (msg->host_id), message);
945 GNUNET_SERVER_receive_done (client, GNUNET_OK);
948 GNUNET_SERVER_receive_done (client, GNUNET_OK);
949 ss = GNUNET_malloc (sizeof (struct SharedService));
950 ss->name = strdup (service_name);
951 ss->num_shared = ntohl (msg->num_peers);
952 GNUNET_CRYPTO_hash (ss->name, service_name_size, &hash);
954 GNUNET_CONTAINER_multihashmap_get_multiple (ss_map, &hash,
955 &ss_exists_iterator, ss))
957 LOG (GNUNET_ERROR_TYPE_WARNING,
958 "Service %s already configured as a shared service. "
959 "Ignoring service sharing request \n", ss->name);
960 GNUNET_free (ss->name);
964 GNUNET_CONTAINER_multihashmap_put (ss_map, &hash, ss,
965 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
970 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message
973 * @param client identification of the client
974 * @param message the actual message
977 handle_link_controllers (void *cls,
978 struct GNUNET_SERVER_Client *client,
979 const struct GNUNET_MessageHeader *message)
981 const struct GNUNET_TESTBED_ControllerLinkMessage *msg;
982 struct GNUNET_CONFIGURATION_Handle *cfg;
983 struct SlaveContext *sc;
984 struct LCFContextQueue *lcfq;
986 struct Route *new_route;
990 uint32_t delegated_host_id;
991 uint32_t slave_host_id;
994 if (NULL == master_context)
997 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1000 msize = ntohs (message->size);
1001 if (sizeof (struct GNUNET_TESTBED_ControllerLinkMessage) >= msize)
1004 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1007 msg = (const struct GNUNET_TESTBED_ControllerLinkMessage *) message;
1008 delegated_host_id = ntohl (msg->delegated_host_id);
1009 if (delegated_host_id == master_context->host_id)
1012 LOG (GNUNET_ERROR_TYPE_WARNING, "Trying to link ourselves\n");
1013 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1016 if ((delegated_host_id >= host_list_size) ||
1017 (NULL == host_list[delegated_host_id]))
1019 LOG (GNUNET_ERROR_TYPE_WARNING, "Delegated host not registered with us\n");
1020 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1023 slave_host_id = ntohl (msg->slave_host_id);
1024 if ((slave_host_id >= host_list_size) || (NULL == host_list[slave_host_id]))
1026 LOG (GNUNET_ERROR_TYPE_WARNING, "Slave host not registered with us\n");
1027 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1030 if (slave_host_id == delegated_host_id)
1032 LOG (GNUNET_ERROR_TYPE_WARNING, "Slave and delegated host are same\n");
1033 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1036 msize -= sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1037 config_size = ntohs (msg->config_size);
1039 if (slave_host_id == master_context->host_id) /* Link from us */
1041 struct Slave *slave;
1043 if ((delegated_host_id < slave_list_size) &&
1044 (NULL != slave_list[delegated_host_id])) /* We have already added */
1046 LOG (GNUNET_ERROR_TYPE_WARNING, "Host %u already connected\n",
1048 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1051 config = GNUNET_malloc (config_size);
1052 dest_size = (uLongf) config_size;
1053 if (Z_OK != uncompress ((Bytef *) config, &dest_size,
1054 (const Bytef *) &msg[1], (uLong) msize))
1056 GNUNET_break (0); /* Compression error */
1057 GNUNET_free (config);
1058 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1061 if (config_size == dest_size)
1063 LOG (GNUNET_ERROR_TYPE_WARNING, "Uncompressed config size mismatch\n");
1064 GNUNET_free (config);
1065 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1067 cfg = GNUNET_CONFIGURATION_create (); /* Free here or in lcfcontext */
1068 if (GNUNET_OK != GNUNET_CONFIGURATION_deserialize (cfg, config, config_size,
1071 GNUNET_break (0); /* Configuration parsing error */
1072 GNUNET_free (config);
1073 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1076 GNUNET_free (config);
1077 if ((delegated_host_id < slave_list_size) &&
1078 (NULL != slave_list[delegated_host_id]))
1080 GNUNET_break (0); /* Configuration parsing error */
1081 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1084 slave = GNUNET_malloc (sizeof (struct Slave));
1085 slave->host_id = delegated_host_id;
1086 slave_list_add (slave);
1087 sc = GNUNET_malloc (sizeof (struct SlaveContext));
1090 if (1 == msg->is_subordinate)
1092 slave->controller_proc =
1093 GNUNET_TESTBED_controller_start (master_context->master_ip,
1094 host_list[slave->host_id],
1095 cfg, &slave_status_callback,
1098 new_route = GNUNET_malloc (sizeof (struct Route));
1099 new_route->dest = delegated_host_id;
1100 new_route->thru = master_context->host_id;
1101 route_list_add (new_route);
1102 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1106 /* Route the request */
1107 if (slave_host_id >= route_list_size)
1109 LOG (GNUNET_ERROR_TYPE_WARNING, "No route towards slave host");
1110 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1113 while (NULL != (route = route_list[slave_host_id]))
1115 if (route->thru == master_context->host_id)
1117 slave_host_id = route->thru;
1119 GNUNET_assert (NULL != route); /* because we add routes carefully */
1120 GNUNET_assert (route->dest < slave_list_size);
1121 GNUNET_assert (NULL != slave_list[route->dest]);
1122 lcfq = GNUNET_malloc (sizeof (struct LCFContextQueue));
1123 lcfq->lcf = GNUNET_malloc (sizeof (struct LCFContext));
1124 lcfq->lcf->delegated_host_id = delegated_host_id;
1125 lcfq->lcf->is_subordinate =
1126 (1 == msg->is_subordinate) ? GNUNET_YES : GNUNET_NO;
1127 lcfq->lcf->state = INIT;
1128 lcfq->lcf->gateway = slave_list[route->dest];
1129 lcfq->lcf->sxcfg_size = msize;
1130 lcfq->lcf->sxcfg = GNUNET_malloc (msize);
1131 lcfq->lcf->scfg_size = config_size;
1132 (void) memcpy (lcfq->lcf->sxcfg, &msg[1], msize);
1133 if (NULL == lcfq_head)
1135 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
1136 GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
1137 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq);
1140 GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
1141 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1142 new_route = GNUNET_malloc (sizeof (struct Route));
1143 new_route->dest = delegated_host_id;
1144 new_route->thru = route->dest;
1145 route_list_add (new_route);
1150 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER messages
1153 * @param client identification of the client
1154 * @param message the actual message
1157 handle_peer_create (void *cls,
1158 struct GNUNET_SERVER_Client *client,
1159 const struct GNUNET_MessageHeader *message)
1161 const struct GNUNET_TESTBED_PeerCreateMessage *msg;
1162 struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *reply;
1163 struct GNUNET_CONFIGURATION_Handle *cfg;
1167 uint32_t config_size;
1171 msize = ntohs (message->size);
1172 if (msize <= sizeof (struct GNUNET_TESTBED_PeerCreateMessage))
1174 GNUNET_break (0); /* We need configuration */
1175 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1178 msg = (const struct GNUNET_TESTBED_PeerCreateMessage *) message;
1179 if (ntohl (msg->host_id) == master_context->host_id)
1184 /* We are responsible for this peer */
1185 msize -= sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
1186 config_size = ntohl (msg->config_size);
1187 config = GNUNET_malloc (config_size);
1188 dest_size = config_size;
1189 if (Z_OK != (ret = uncompress ((Bytef *) config, (uLongf *) &dest_size,
1190 (const Bytef *) &msg[1], (uLong) msize)))
1192 GNUNET_break (0); /* uncompression error */
1193 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1196 if (config_size != dest_size)
1198 GNUNET_break (0);/* Uncompressed config size mismatch */
1199 GNUNET_free (config);
1200 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1203 cfg = GNUNET_CONFIGURATION_create ();
1204 if (GNUNET_OK != GNUNET_CONFIGURATION_deserialize (cfg, config, config_size,
1207 GNUNET_break (0); /* Configuration parsing error */
1208 GNUNET_free (config);
1209 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1212 GNUNET_free (config);
1213 peer = GNUNET_malloc (sizeof (struct Peer));
1215 peer->id = ntohl (msg->peer_id);
1216 LOG_DEBUG ("Creating peer with id: %u\n", peer->id);
1217 peer->peer = GNUNET_TESTING_peer_configure (master_context->system, peer->cfg,
1221 if (NULL == peer->peer)
1223 LOG (GNUNET_ERROR_TYPE_WARNING, "Configuring peer failed: %s\n", emsg);
1226 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1229 peer_list_add (peer);
1230 reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
1231 reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
1232 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS);
1233 reply->peer_id = msg->peer_id;
1234 reply->operation_id = msg->operation_id;
1235 queue_message (client, &reply->header);
1236 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1240 /* FIXME: Forward the peer to other host */
1242 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1247 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
1250 * @param client identification of the client
1251 * @param message the actual message
1254 handle_peer_destroy (void *cls,
1255 struct GNUNET_SERVER_Client *client,
1256 const struct GNUNET_MessageHeader *message)
1258 const struct GNUNET_TESTBED_PeerDestroyMessage *msg;
1259 struct GNUNET_TESTBED_GenericOperationSuccessEventMessage *reply;
1262 uint16_t reply_size;
1264 msg = (const struct GNUNET_TESTBED_PeerDestroyMessage *) message;
1265 peer_id = ntohl (msg->peer_id);
1266 LOG_DEBUG ("Received peer destory on peer: %u and operation id: %ul\n",
1267 peer_id, GNUNET_ntohll (msg->operation_id));
1268 if ((peer_list_size <= peer_id) || (NULL == peer_list[peer_id]))
1271 /* FIXME: Reply with failure event message or forward to slave controller */
1272 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1275 GNUNET_TESTING_peer_destroy (peer_list[peer_id]->peer);
1276 GNUNET_CONFIGURATION_destroy (peer_list[peer_id]->cfg);
1277 GNUNET_free (peer_list[peer_id]);
1278 peer_list[peer_id] = NULL;
1279 for (id = 0; id < LIST_GROW_STEP; id++)
1281 if (((peer_id + id >= peer_list_size) ||
1282 (NULL != peer_list[peer_id])))
1285 if (LIST_GROW_STEP == id)
1287 peer_list_size -= LIST_GROW_STEP;
1288 peer_list = GNUNET_realloc (peer_list, peer_list_size);
1291 sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage);
1292 reply = GNUNET_malloc (reply_size);
1293 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS);
1294 reply->header.size = htons (reply_size);
1295 reply->operation_id = msg->operation_id;
1296 reply->event_type = htonl (GNUNET_TESTBED_ET_OPERATION_FINISHED);
1297 queue_message (client, &reply->header);
1298 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1303 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
1306 * @param client identification of the client
1307 * @param message the actual message
1310 handle_peer_start (void *cls,
1311 struct GNUNET_SERVER_Client *client,
1312 const struct GNUNET_MessageHeader *message)
1314 const struct GNUNET_TESTBED_PeerStartMessage *msg;
1315 struct GNUNET_TESTBED_PeerEventMessage *reply;
1318 msg = (const struct GNUNET_TESTBED_PeerStartMessage *) message;
1319 peer_id = ntohl (msg->peer_id);
1320 if ((peer_id >= peer_list_size)
1321 || (NULL == peer_list[peer_id]))
1324 /* FIXME: reply with failure message or forward to slave controller */
1325 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1328 if (GNUNET_OK != GNUNET_TESTING_peer_start (peer_list[peer_id]->peer))
1330 /* FIXME: return FAILURE message */
1332 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1335 reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
1336 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT);
1337 reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
1338 reply->event_type = htonl (GNUNET_TESTBED_ET_PEER_START);
1339 reply->host_id = htonl (master_context->host_id);
1340 reply->peer_id = msg->peer_id;
1341 reply->operation_id = msg->operation_id;
1342 queue_message (client, &reply->header);
1343 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1348 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
1351 * @param client identification of the client
1352 * @param message the actual message
1355 handle_peer_stop (void *cls,
1356 struct GNUNET_SERVER_Client *client,
1357 const struct GNUNET_MessageHeader *message)
1359 const struct GNUNET_TESTBED_PeerStopMessage *msg;
1360 struct GNUNET_TESTBED_PeerEventMessage *reply;
1363 msg = (const struct GNUNET_TESTBED_PeerStopMessage *) message;
1364 peer_id = ntohl (msg->peer_id);
1365 if ((peer_id >= peer_list_size) || (NULL == peer_list[peer_id]))
1367 GNUNET_break (0); /* FIXME: route to slave? */
1368 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1371 if (GNUNET_OK != GNUNET_TESTING_peer_stop (peer_list[peer_id]->peer))
1373 /* FIXME: return FAILURE message */
1375 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1378 reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
1379 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT);
1380 reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
1381 reply->event_type = htonl (GNUNET_TESTBED_ET_PEER_STOP);
1382 reply->host_id = htonl (master_context->host_id);
1383 reply->peer_id = msg->peer_id;
1384 reply->operation_id = msg->operation_id;
1385 queue_message (client, &reply->header);
1386 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1391 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_GETPEERCONFIG messages
1394 * @param client identification of the client
1395 * @param message the actual message
1398 handle_peer_get_config (void *cls,
1399 struct GNUNET_SERVER_Client *client,
1400 const struct GNUNET_MessageHeader *message)
1402 const struct GNUNET_TESTBED_PeerGetConfigurationMessage *msg;
1403 struct GNUNET_TESTBED_PeerConfigurationInformationMessage *reply;
1411 msg = (const struct GNUNET_TESTBED_PeerGetConfigurationMessage *) message;
1412 peer_id = ntohl (msg->peer_id);
1413 if ((peer_id >= peer_list_size) || (NULL == peer_list[peer_id]))
1415 /* FIXME: return FAILURE message */
1417 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1419 config = GNUNET_CONFIGURATION_serialize (peer_list[peer_id]->cfg,
1421 xc_size = GNUNET_TESTBED_compress_config_ (config, c_size, &xconfig);
1422 GNUNET_free (config);
1423 msize = xc_size + sizeof (struct
1424 GNUNET_TESTBED_PeerConfigurationInformationMessage);
1425 reply = GNUNET_realloc (xconfig, msize);
1426 (void) memmove (&reply[1], reply, xc_size);
1427 reply->header.size = htons (msize);
1428 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEERCONFIG);
1429 reply->peer_id = msg->peer_id;
1430 reply->operation_id = msg->operation_id;
1431 GNUNET_TESTING_peer_get_identity (peer_list[peer_id]->peer,
1432 &reply->peer_identity);
1433 reply->config_size = htons ((uint16_t) c_size);
1434 queue_message (client, &reply->header);
1435 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1440 * Iterator over hash map entries.
1442 * @param cls closure
1443 * @param key current key code
1444 * @param value value in the hash map
1445 * @return GNUNET_YES if we should continue to
1450 ss_map_free_iterator (void *cls,
1451 const struct GNUNET_HashCode * key, void *value)
1453 struct SharedService *ss = value;
1455 GNUNET_assert (GNUNET_YES ==
1456 GNUNET_CONTAINER_multihashmap_remove (ss_map, key, value));
1457 GNUNET_free (ss->name);
1464 * Task to clean up and shutdown nicely
1467 * @param tc the TaskContext from scheduler
1470 shutdown_task (void *cls,
1471 const struct GNUNET_SCHEDULER_TaskContext *tc)
1473 struct LCFContextQueue *lcfq;
1476 shutdown_task_id = GNUNET_SCHEDULER_NO_TASK;
1477 LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down testbed service\n");
1478 (void) GNUNET_CONTAINER_multihashmap_iterate (ss_map, &ss_map_free_iterator,
1480 GNUNET_CONTAINER_multihashmap_destroy (ss_map);
1483 GNUNET_DISK_file_close (fh);
1486 if (NULL != lcfq_head)
1488 if (GNUNET_SCHEDULER_NO_TASK != lcf_proc_task_id)
1490 GNUNET_SCHEDULER_cancel (lcf_proc_task_id);
1491 lcf_proc_task_id = GNUNET_SCHEDULER_NO_TASK;
1493 if (NULL != lcfq_head->lcf->rhandle)
1494 GNUNET_TESTBED_cancel_registration (lcfq_head->lcf->rhandle);
1496 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
1497 for (lcfq = lcfq_head; NULL != lcfq; lcfq = lcfq_head)
1499 GNUNET_free (lcfq->lcf->sxcfg);
1500 GNUNET_free (lcfq->lcf);
1501 GNUNET_CONTAINER_DLL_remove (lcfq_head, lcfq_tail, lcfq);
1504 /* Clear peer list */
1505 for (id = 0; id < peer_list_size; id++)
1506 if (NULL != peer_list[id])
1508 GNUNET_TESTING_peer_destroy (peer_list[id]->peer);
1509 GNUNET_CONFIGURATION_destroy (peer_list[id]->cfg);
1510 GNUNET_free (peer_list[id]);
1512 GNUNET_free_non_null (peer_list);
1513 /* Clear host list */
1514 for (id = 0; id < host_list_size; id++)
1515 if (NULL != host_list[id])
1516 GNUNET_TESTBED_host_destroy (host_list[id]);
1517 GNUNET_free_non_null (host_list);
1518 /* Clear route list */
1519 for (id = 0; id < route_list_size; id++)
1520 if (NULL != route_list[id])
1521 GNUNET_free (route_list[id]);
1522 GNUNET_free_non_null (route_list);
1523 /* Clear slave_list */
1524 for (id = 0; id < slave_list_size; id++)
1525 if (NULL != slave_list[id])
1527 GNUNET_assert (NULL != slave_list[id]->controller);
1528 GNUNET_TESTBED_controller_disconnect (slave_list[id]->controller);
1529 if (NULL != slave_list[id]->controller_proc)
1530 GNUNET_TESTBED_controller_stop (slave_list[id]->controller_proc);
1532 if (NULL != master_context)
1534 GNUNET_free_non_null (master_context->master_ip);
1535 if (NULL != master_context->system)
1536 GNUNET_TESTING_system_destroy (master_context->system, GNUNET_YES);
1537 GNUNET_free (master_context);
1538 master_context = NULL;
1544 * Debug shutdown task in case of stdin getting closed
1547 * @param tc the TaskContext from scheduler
1550 shutdown_task_ (void *cls,
1551 const struct GNUNET_SCHEDULER_TaskContext *tc)
1553 LOG (GNUNET_ERROR_TYPE_DEBUG, "STDIN closed ...\n");
1554 shutdown_task (cls, tc);
1559 * Callback for client disconnect
1562 * @param client the client which has disconnected
1565 client_disconnect_cb (void *cls, struct GNUNET_SERVER_Client *client)
1567 if (NULL == master_context)
1569 if (client == master_context->client)
1571 LOG (GNUNET_ERROR_TYPE_DEBUG, "Master client disconnected\n");
1572 GNUNET_SERVER_client_drop (client);
1573 /* should not be needed as we're terminated by failure to read
1574 from stdin, but if stdin fails for some reason, this shouldn't
1575 hurt for now --- might need to revise this later if we ever
1576 decide that master connections might be temporarily down
1578 GNUNET_SCHEDULER_shutdown ();
1586 * @param cls closure
1587 * @param server the initialized server
1588 * @param cfg configuration to use
1591 testbed_run (void *cls,
1592 struct GNUNET_SERVER_Handle *server,
1593 const struct GNUNET_CONFIGURATION_Handle *cfg)
1595 static const struct GNUNET_SERVER_MessageHandler message_handlers[] =
1597 {&handle_init, NULL, GNUNET_MESSAGE_TYPE_TESTBED_INIT,
1598 sizeof (struct GNUNET_TESTBED_InitMessage)},
1599 {&handle_add_host, NULL, GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST, 0},
1600 {&handle_configure_shared_service, NULL,
1601 GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE, 0},
1602 {&handle_link_controllers, NULL,
1603 GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS, 0},
1604 {&handle_peer_create, NULL, GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER, 0},
1605 {&handle_peer_destroy, NULL, GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER,
1606 sizeof (struct GNUNET_TESTBED_PeerDestroyMessage)},
1607 {&handle_peer_start, NULL, GNUNET_MESSAGE_TYPE_TESTBED_STARTPEER,
1608 sizeof (struct GNUNET_TESTBED_PeerStartMessage)},
1609 {&handle_peer_stop, NULL, GNUNET_MESSAGE_TYPE_TESTBED_STOPPEER,
1610 sizeof (struct GNUNET_TESTBED_PeerStopMessage)},
1611 {&handle_peer_get_config, NULL, GNUNET_MESSAGE_TYPE_TESTBED_GETPEERCONFIG,
1612 sizeof (struct GNUNET_TESTBED_PeerGetConfigurationMessage)},
1616 GNUNET_SERVER_add_handlers (server,
1618 GNUNET_SERVER_disconnect_notify (server,
1619 &client_disconnect_cb,
1621 ss_map = GNUNET_CONTAINER_multihashmap_create (5);
1622 fh = GNUNET_DISK_get_handle_from_native (stdin);
1625 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1630 GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
1634 LOG_DEBUG ("Testbed startup complete\n");
1639 * The starting point of execution
1641 int main (int argc, char *const *argv)
1645 GNUNET_SERVICE_run (argc,
1648 GNUNET_SERVICE_OPTION_NONE,