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.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file testbed/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"
33 #include "gnunet_testbed_service.h"
34 #include "testbed_api_hosts.h"
35 #include "gnunet_testing_lib-new.h"
40 #define LOG(kind,...) \
41 GNUNET_log (kind, __VA_ARGS__)
46 #define LOG_DEBUG(...) \
47 LOG (GNUNET_ERROR_TYPE_DEBUG, __VA_ARGS__)
50 #define LIST_GROW_STEP 10
55 * The client handle associated with this context
57 struct GNUNET_SERVER_Client *client;
60 * The network address of the master controller
65 * The TESTING system handle for starting peers locally
67 struct GNUNET_TESTING_System *system;
70 * Event mask of event to be responded in this context
75 * Our host id according to this context
82 * The message queue for sending messages to clients
87 * The message to be sent
89 struct GNUNET_MessageHeader *msg;
92 * The client to send the message to
94 struct GNUNET_SERVER_Client *client;
97 * next pointer for DLL
99 struct MessageQueue *next;
102 * prev pointer for DLL
104 struct MessageQueue *prev;
109 * The structure for identifying a shared service
114 * The name of the shared service
119 * Number of shared peers per instance of the shared service
124 * Number of peers currently sharing the service
126 uint32_t num_sharing;
141 * The host destination is reachable thru
148 * Structure representing a connected(directly-linked) controller
153 * The controller process handle if we had started the controller
155 struct GNUNET_TESTBED_ControllerProc *controller_proc;
158 * The controller handle
160 struct GNUNET_TESTBED_Controller *controller;
163 * The id of the host this controller is running on
170 * Slave startup context
175 * The slave corresponding to this context
180 * The configuration used as a template while startup
182 struct GNUNET_CONFIGURATION_Handle *cfg;
187 * States of LCFContext
192 * The Context has been initialized; Nothing has been done on it
197 * Delegated host has been registered at the forwarding controller
199 DELEGATED_HOST_REGISTERED,
202 * The context has been finished (may have error)
210 * Link controllers request forwarding context
215 * The serialized and compressed configuration
220 * The gateway which will pass the link message to delegated host
222 struct Slave *gateway;
225 * The host registration handle while registered hosts in this context
227 struct GNUNET_TESTBED_HostRegistrationHandle *rhandle;
230 * The size of the compressed serialized configuration
235 * The size of the uncompressed configuration
240 * Should the delegated host be started by the slave host?
245 * The state of this context
247 enum LCFContextState state;
252 uint32_t delegated_host_id;
259 * Structure of a queue entry in LCFContext request queue
261 struct LCFContextQueue
266 struct LCFContext *lcf;
271 struct LCFContextQueue *next;
276 struct LCFContextQueue *prev;
281 * A locally started peer
286 * The peer handle from testing API
288 struct GNUNET_TESTING_Peer *peer;
291 * The modified (by GNUNET_TESTING_peer_configure) configuration this peer is
294 struct GNUNET_CONFIGURATION_Handle *cfg;
297 * Our local reference id for this peer
305 * The master context; generated with the first INIT message
307 static struct Context *master_context;
316 static struct GNUNET_DISK_FileHandle *fh;
319 * Current Transmit Handle; NULL if no notify transmit exists currently
321 static struct GNUNET_SERVER_TransmitHandle *transmit_handle;
328 * The head for the LCF queue
330 static struct LCFContextQueue *lcfq_head;
333 * The tail for the LCF queue
335 static struct LCFContextQueue *lcfq_tail;
338 * The message queue head
340 static struct MessageQueue *mq_head;
343 * The message queue tail
345 static struct MessageQueue *mq_tail;
350 static struct GNUNET_TESTBED_Host **host_list;
355 static struct Route **route_list;
358 * A list of directly linked neighbours
360 static struct Slave **slave_list;
363 * A list of peers we own locally
365 static struct Peer **peer_list;
368 * The hashmap of shared services
370 static struct GNUNET_CONTAINER_MultiHashMap *ss_map;
373 * The size of the host list
375 static uint32_t host_list_size;
378 * The size of the route list
380 static uint32_t route_list_size;
383 * The size of directly linked neighbours list
385 static uint32_t slave_list_size;
388 * The size of the peer list
390 static uint32_t peer_list_size;
397 * The lcf_task handle
399 static GNUNET_SCHEDULER_TaskIdentifier lcf_proc_task_id;
402 * The shutdown task handle
404 static GNUNET_SCHEDULER_TaskIdentifier shutdown_task_id;
411 * Our configuration; we also use this as template for starting other controllers
413 static struct GNUNET_CONFIGURATION_Handle *config;
417 * Function called to notify a client about the connection begin ready to queue
418 * more data. "buf" will be NULL and "size" zero if the connection was closed
419 * for writing in the meantime.
422 * @param size number of bytes available in buf
423 * @param buf where the callee should write the message
424 * @return number of bytes written to buf
427 transmit_ready_notify (void *cls, size_t size, void *buf)
429 struct MessageQueue *mq_entry;
431 transmit_handle = NULL;
433 GNUNET_assert (NULL != mq_entry);
436 GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
437 size = ntohs (mq_entry->msg->size);
438 memcpy (buf, mq_entry->msg, size);
439 GNUNET_free (mq_entry->msg);
440 GNUNET_CONTAINER_DLL_remove (mq_head, mq_tail, mq_entry);
441 GNUNET_free (mq_entry);
443 if (NULL != mq_entry)
445 GNUNET_SERVER_notify_transmit_ready (mq_entry->client,
446 ntohs (mq_entry->msg->size),
447 GNUNET_TIME_UNIT_FOREVER_REL,
448 &transmit_ready_notify, NULL);
454 * Queues a message in send queue for sending to the service
456 * @param client the client to whom the queued message has to be sent
457 * @param msg the message to queue
460 queue_message (struct GNUNET_SERVER_Client *client,
461 struct GNUNET_MessageHeader *msg)
463 struct MessageQueue *mq_entry;
467 type = ntohs (msg->type);
468 size = ntohs (msg->size);
469 GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
470 (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
471 mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
473 mq_entry->client = client;
474 LOG_DEBUG ( "Queueing message of type %u, size %u for sending\n", type,
476 GNUNET_CONTAINER_DLL_insert_tail (mq_head, mq_tail, mq_entry);
477 if (NULL == transmit_handle)
479 GNUNET_SERVER_notify_transmit_ready (client, size,
480 GNUNET_TIME_UNIT_FOREVER_REL,
481 &transmit_ready_notify, NULL);
486 * Similar to GNUNET_realloc; however clears tail part of newly allocated memory
488 * @param ptr the memory block to realloc
489 * @param size the size of ptr
490 * @param new_size the size to which ptr has to be realloc'ed
491 * @return the newly reallocated memory block
494 TESTBED_realloc (void *ptr, size_t size, size_t new_size)
496 ptr = GNUNET_realloc (ptr, new_size);
498 ptr = memset (ptr + size, 0, new_size - size);
504 * Function to add a host to the current list of known hosts
506 * @param host the host to add
507 * @return GNUNET_OK on success; GNUNET_SYSERR on failure due to host-id
511 host_list_add (struct GNUNET_TESTBED_Host *host)
515 host_id = GNUNET_TESTBED_host_get_id_ (host);
516 if (host_list_size <= host_id)
519 TESTBED_realloc (host_list,
520 sizeof (struct GNUNET_TESTBED_Host *) * host_list_size,
521 sizeof (struct GNUNET_TESTBED_Host *) *
522 (host_list_size + LIST_GROW_STEP));
523 host_list_size += LIST_GROW_STEP;
525 if (NULL != host_list[host_id])
527 LOG_DEBUG ("A host with id: %u already exists\n", host_id);
528 return GNUNET_SYSERR;
530 host_list[host_id] = host;
536 * Adds a route to the route list
538 * @param route the route to add
541 route_list_add (struct Route *route)
543 if (route->dest >= route_list_size)
546 TESTBED_realloc (route_list,
547 sizeof (struct Route *) * route_list_size,
548 sizeof (struct Route *) *
549 (route_list_size + LIST_GROW_STEP));
550 route_list_size += LIST_GROW_STEP;
552 GNUNET_assert (NULL == route_list[route->dest]);
553 route_list[route->dest] = route;
558 * Adds a slave to the slave array
560 * @param route the route to add
563 slave_list_add (struct Slave *slave)
565 if (slave->host_id >= slave_list_size)
567 slave_list = TESTBED_realloc (slave_list,
568 sizeof (struct Slave *) *slave_list_size,
569 sizeof (struct Slave *) *
570 (slave_list_size + LIST_GROW_STEP));
571 slave_list_size += LIST_GROW_STEP;
573 GNUNET_assert (NULL == slave_list[slave->host_id]);
574 slave_list[slave->host_id] = slave;
579 * Adds a peer to the peer array
581 * @param route the route to add
584 peer_list_add (struct Peer *peer)
586 if (peer->id >= peer_list_size)
588 peer_list = TESTBED_realloc (peer_list,
589 sizeof (struct Peer *) * peer_list_size,
590 sizeof (struct Peer *) *
591 (peer_list_size + LIST_GROW_STEP));
592 peer_list_size += LIST_GROW_STEP;
594 GNUNET_assert (NULL == peer_list[peer->id]);
595 peer_list[peer->id] = peer;
600 * Routes message to a host given its host_id
602 * @param host_id the id of the destination host
603 * @param msg the message to be routed
606 route_message (uint32_t host_id, const struct GNUNET_MessageHeader *msg)
613 * The Link Controller forwarding task
615 * @param cls the LCFContext
616 * @param tc the Task context from scheduler
619 lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
623 * Completion callback for host registrations while forwarding Link Controller messages
625 * @param cls the LCFContext
626 * @param emsg the error message; NULL if host registration is successful
629 lcf_proc_cc (void *cls, const char *emsg)
631 struct LCFContext *lcf = cls;
634 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
640 LOG (GNUNET_ERROR_TYPE_WARNING,
641 "Host registration failed with message: %s\n", emsg);
642 lcf->state = FINISHED;
643 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
646 lcf->state = DELEGATED_HOST_REGISTERED;
647 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
650 GNUNET_assert (0); /* Shouldn't reach here */
656 * The Link Controller forwarding task
658 * @param cls the LCFContext
659 * @param tc the Task context from scheduler
662 lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
664 struct LCFContext *lcf = cls;
665 struct LCFContextQueue *lcfq;
667 lcf_proc_task_id = GNUNET_SCHEDULER_NO_TASK;
672 GNUNET_TESTBED_is_host_registered_ (host_list[lcf->delegated_host_id],
673 lcf->gateway->controller))
676 GNUNET_TESTBED_register_host (lcf->gateway->controller,
677 host_list[lcf->delegated_host_id],
682 lcf->state = DELEGATED_HOST_REGISTERED;
683 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
686 case DELEGATED_HOST_REGISTERED:
687 GNUNET_TESTBED_controller_link_2 (lcf->gateway->controller,
688 host_list[lcf->delegated_host_id],
689 host_list[lcf->gateway->host_id],
690 lcf->sxcfg, lcf->sxcfg_size,
692 lcf->is_subordinate);
693 lcf->state = FINISHED;
696 GNUNET_assert (lcfq->lcf == lcf);
697 GNUNET_free (lcf->sxcfg);
699 GNUNET_CONTAINER_DLL_remove (lcfq_head, lcfq_tail, lcfq);
701 if (NULL != lcfq_head)
703 GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq_head->lcf);
709 * Callback for event from slave controllers
711 * @param cls struct Slave *
712 * @param event information about the event
715 slave_event_callback(void *cls,
716 const struct GNUNET_TESTBED_EventInformation *event)
723 * Callback to signal successfull startup of the controller process
725 * @param cls the closure from GNUNET_TESTBED_controller_start()
726 * @param cfg the configuration with which the controller has been started;
727 * NULL if status is not GNUNET_OK
728 * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
729 * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
732 slave_status_callback (void *cls,
733 const struct GNUNET_CONFIGURATION_Handle *cfg,
736 struct SlaveContext *sc = cls;
738 if (GNUNET_SYSERR == status)
740 sc->slave->controller_proc = NULL;
741 LOG (GNUNET_ERROR_TYPE_WARNING,
742 "Unexpected slave shutdown\n");
743 GNUNET_SCHEDULER_shutdown (); /* We too shutdown */
746 GNUNET_CONFIGURATION_destroy (sc->cfg);
747 sc->slave->controller =
748 GNUNET_TESTBED_controller_connect (cfg, host_list[sc->slave->host_id],
749 master_context->event_mask,
750 &slave_event_callback, sc->slave);
756 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_INIT messages
759 * @param client identification of the client
760 * @param message the actual message
763 handle_init (void *cls,
764 struct GNUNET_SERVER_Client *client,
765 const struct GNUNET_MessageHeader *message)
767 const struct GNUNET_TESTBED_InitMessage *msg;
768 struct GNUNET_TESTBED_Host *host;
772 if (NULL != master_context)
775 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
778 msg = (const struct GNUNET_TESTBED_InitMessage *) message;
779 master_context = GNUNET_malloc (sizeof (struct Context));
780 master_context->client = client;
781 master_context->host_id = ntohl (msg->host_id);
782 GNUNET_assert (GNUNET_OK ==
783 GNUNET_SERVER_client_get_address (client, &addr, &addrlen));
784 master_context->master_ip = GNUNET_malloc (NI_MAXHOST);
785 if (0 != getnameinfo (addr, addrlen, master_context->master_ip, NI_MAXHOST,
786 NULL, 0, NI_NUMERICHOST))
788 LOG (GNUNET_ERROR_TYPE_WARNING,
789 "Cannot determine the ip of master controller: %s\n", STRERROR (errno));
792 master_context->system =
793 GNUNET_TESTING_system_create ("testbed", master_context->master_ip);
794 host = GNUNET_TESTBED_host_create_with_id (master_context->host_id,
796 host_list_add (host);
797 master_context->event_mask = GNUNET_ntohll (msg->event_mask);
798 GNUNET_SERVER_client_keep (client);
799 LOG_DEBUG ("Created master context with host ID: %u\n",
800 master_context->host_id);
801 GNUNET_SERVER_receive_done (client, GNUNET_OK);
806 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
809 * @param client identification of the client
810 * @param message the actual message
813 handle_add_host (void *cls,
814 struct GNUNET_SERVER_Client *client,
815 const struct GNUNET_MessageHeader *message)
817 struct GNUNET_TESTBED_Host *host;
818 const struct GNUNET_TESTBED_AddHostMessage *msg;
819 struct GNUNET_TESTBED_HostConfirmedMessage *reply;
824 uint16_t username_length;
825 uint16_t hostname_length;
828 msg = (const struct GNUNET_TESTBED_AddHostMessage *) message;
829 username_length = ntohs (msg->user_name_length);
830 username_length = (0 == username_length) ? 0 : username_length + 1;
831 username = (char *) &(msg[1]);
832 hostname = username + username_length;
833 if (ntohs (message->size) <=
834 (sizeof (struct GNUNET_TESTBED_AddHostMessage) + username_length))
837 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
840 hostname_length = ntohs (message->size)
841 - (sizeof (struct GNUNET_TESTBED_AddHostMessage) + username_length);
842 if (strlen (hostname) != hostname_length - 1)
845 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
848 host_id = ntohl (msg->host_id);
849 LOG_DEBUG ("Received ADDHOST message\n");
850 LOG_DEBUG ("-------host id: %u\n", host_id);
851 if (NULL != hostname) LOG_DEBUG ("-------hostname: %s\n", hostname);
852 if (0 != username_length) LOG_DEBUG ("-------username: %s\n", username);
853 else LOG_DEBUG ("-------username: NULL\n");
854 LOG_DEBUG ("-------ssh port: %u\n", ntohs (msg->ssh_port));
855 host = GNUNET_TESTBED_host_create_with_id (host_id, hostname, username,
856 ntohs (msg->ssh_port));
857 GNUNET_SERVER_receive_done (client, GNUNET_OK);
858 reply_size = sizeof (struct GNUNET_TESTBED_HostConfirmedMessage);
859 if (GNUNET_OK != host_list_add (host))
861 /* We are unable to add a host */
862 emsg = "A host exists with given host-id";
863 LOG_DEBUG ("%s: %u", emsg, host_id);
864 GNUNET_TESTBED_host_destroy (host);
865 reply_size += strlen (emsg) + 1;
866 reply = GNUNET_malloc (reply_size);
867 memcpy (&reply[1], emsg, strlen (emsg) + 1);
870 reply = GNUNET_malloc (reply_size);
871 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM);
872 reply->header.size = htons (reply_size);
873 reply->host_id = htonl (host_id);
874 queue_message (client, (struct GNUNET_MessageHeader *) reply);
879 * Iterator over hash map entries.
882 * @param key current key code
883 * @param value value in the hash map
884 * @return GNUNET_YES if we should continue to
888 int ss_exists_iterator (void *cls,
889 const struct GNUNET_HashCode * key,
892 struct SharedService *queried_ss = cls;
893 struct SharedService *ss = value;
895 if (0 == strcmp (ss->name, queried_ss->name))
903 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
906 * @param client identification of the client
907 * @param message the actual message
910 handle_configure_shared_service (void *cls,
911 struct GNUNET_SERVER_Client *client,
912 const struct GNUNET_MessageHeader *message)
914 const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
915 struct SharedService *ss;
917 struct GNUNET_HashCode hash;
919 uint16_t service_name_size;
921 msg = (const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *) message;
922 msg_size = ntohs (message->size);
923 if (msg_size <= sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage))
926 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
929 service_name_size = msg_size -
930 sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage);
931 service_name = (char *) &msg[1];
932 if ('\0' != service_name[service_name_size - 1])
935 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
938 LOG_DEBUG ("Received service sharing request for %s, with %d peers\n",
939 service_name, ntohl (msg->num_peers));
940 if (ntohl (msg->host_id) != master_context->host_id)
942 route_message (ntohl (msg->host_id), message);
943 GNUNET_SERVER_receive_done (client, GNUNET_OK);
946 GNUNET_SERVER_receive_done (client, GNUNET_OK);
947 ss = GNUNET_malloc (sizeof (struct SharedService));
948 ss->name = strdup (service_name);
949 ss->num_shared = ntohl (msg->num_peers);
950 GNUNET_CRYPTO_hash (ss->name, service_name_size, &hash);
952 GNUNET_CONTAINER_multihashmap_get_multiple (ss_map, &hash,
953 &ss_exists_iterator, ss))
955 LOG (GNUNET_ERROR_TYPE_WARNING,
956 "Service %s already configured as a shared service. "
957 "Ignoring service sharing request \n", ss->name);
958 GNUNET_free (ss->name);
962 GNUNET_CONTAINER_multihashmap_put (ss_map, &hash, ss,
963 GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
968 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message
971 * @param client identification of the client
972 * @param message the actual message
975 handle_link_controllers (void *cls,
976 struct GNUNET_SERVER_Client *client,
977 const struct GNUNET_MessageHeader *message)
979 const struct GNUNET_TESTBED_ControllerLinkMessage *msg;
980 struct GNUNET_CONFIGURATION_Handle *cfg;
981 struct SlaveContext *sc;
982 struct LCFContextQueue *lcfq;
984 struct Route *new_route;
988 uint32_t delegated_host_id;
989 uint32_t slave_host_id;
992 if (NULL == master_context)
995 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
998 msize = ntohs (message->size);
999 if (sizeof (struct GNUNET_TESTBED_ControllerLinkMessage) >= msize)
1002 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1005 msg = (const struct GNUNET_TESTBED_ControllerLinkMessage *) message;
1006 delegated_host_id = ntohl (msg->delegated_host_id);
1007 if (delegated_host_id == master_context->host_id)
1010 LOG (GNUNET_ERROR_TYPE_WARNING, "Trying to link ourselves\n");
1011 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1014 if ((delegated_host_id >= host_list_size) ||
1015 (NULL == host_list[delegated_host_id]))
1017 LOG (GNUNET_ERROR_TYPE_WARNING, "Delegated host not registered with us\n");
1018 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1021 slave_host_id = ntohl (msg->slave_host_id);
1022 if ((slave_host_id >= host_list_size) || (NULL == host_list[slave_host_id]))
1024 LOG (GNUNET_ERROR_TYPE_WARNING, "Slave host not registered with us\n");
1025 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1028 if (slave_host_id == delegated_host_id)
1030 LOG (GNUNET_ERROR_TYPE_WARNING, "Slave and delegated host are same\n");
1031 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1034 msize -= sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
1035 config_size = ntohs (msg->config_size);
1037 if (slave_host_id == master_context->host_id) /* Link from us */
1039 struct Slave *slave;
1041 if ((delegated_host_id < slave_list_size) &&
1042 (NULL != slave_list[delegated_host_id])) /* We have already added */
1044 LOG (GNUNET_ERROR_TYPE_WARNING, "Host %u already connected\n",
1046 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1049 config = GNUNET_malloc (config_size);
1050 dest_size = (uLongf) config_size;
1051 if (Z_OK != uncompress ((Bytef *) config, &dest_size,
1052 (const Bytef *) &msg[1], (uLong) msize))
1054 GNUNET_break (0); /* Compression error */
1055 GNUNET_free (config);
1056 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1059 if (config_size == dest_size)
1061 LOG (GNUNET_ERROR_TYPE_WARNING, "Uncompressed config size mismatch\n");
1062 GNUNET_free (config);
1063 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1065 cfg = GNUNET_CONFIGURATION_create (); /* Free here or in lcfcontext */
1066 if (GNUNET_OK != GNUNET_CONFIGURATION_deserialize (cfg, config, config_size,
1069 GNUNET_break (0); /* Configuration parsing error */
1070 GNUNET_free (config);
1071 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1074 GNUNET_free (config);
1075 if ((delegated_host_id < slave_list_size) &&
1076 (NULL != slave_list[delegated_host_id]))
1078 GNUNET_break (0); /* Configuration parsing error */
1079 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1082 slave = GNUNET_malloc (sizeof (struct Slave));
1083 slave->host_id = delegated_host_id;
1084 slave_list_add (slave);
1085 sc = GNUNET_malloc (sizeof (struct SlaveContext));
1088 if (1 == msg->is_subordinate)
1090 slave->controller_proc =
1091 GNUNET_TESTBED_controller_start (master_context->master_ip,
1092 host_list[slave->host_id],
1093 cfg, &slave_status_callback,
1096 new_route = GNUNET_malloc (sizeof (struct Route));
1097 new_route->dest = delegated_host_id;
1098 new_route->thru = master_context->host_id;
1099 route_list_add (new_route);
1100 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1104 /* Route the request */
1105 if (slave_host_id >= route_list_size)
1107 LOG (GNUNET_ERROR_TYPE_WARNING, "No route towards slave host");
1108 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1111 while (NULL != (route = route_list[slave_host_id]))
1113 if (route->thru == master_context->host_id)
1115 slave_host_id = route->thru;
1117 GNUNET_assert (NULL != route); /* because we add routes carefully */
1118 GNUNET_assert (route->dest < slave_list_size);
1119 GNUNET_assert (NULL != slave_list[route->dest]);
1120 lcfq = GNUNET_malloc (sizeof (struct LCFContextQueue));
1121 lcfq->lcf = GNUNET_malloc (sizeof (struct LCFContext));
1122 lcfq->lcf->delegated_host_id = delegated_host_id;
1123 lcfq->lcf->is_subordinate =
1124 (1 == msg->is_subordinate) ? GNUNET_YES : GNUNET_NO;
1125 lcfq->lcf->state = INIT;
1126 lcfq->lcf->gateway = slave_list[route->dest];
1127 lcfq->lcf->sxcfg_size = msize;
1128 lcfq->lcf->sxcfg = GNUNET_malloc (msize);
1129 lcfq->lcf->scfg_size = config_size;
1130 (void) memcpy (lcfq->lcf->sxcfg, &msg[1], msize);
1131 if (NULL == lcfq_head)
1133 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
1134 GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
1135 lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq);
1138 GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
1139 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1140 new_route = GNUNET_malloc (sizeof (struct Route));
1141 new_route->dest = delegated_host_id;
1142 new_route->thru = route->dest;
1143 route_list_add (new_route);
1148 * Handler for GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER messages
1151 * @param client identification of the client
1152 * @param message the actual message
1155 handle_peer_create (void *cls,
1156 struct GNUNET_SERVER_Client *client,
1157 const struct GNUNET_MessageHeader *message)
1159 const struct GNUNET_TESTBED_PeerCreateMessage *msg;
1160 struct GNUNET_CONFIGURATION_Handle *cfg;
1164 uint32_t config_size;
1168 msize = ntohs (message->size);
1169 if (msize <= sizeof (struct GNUNET_TESTBED_PeerCreateMessage))
1171 GNUNET_break (0); /* We need configuration */
1172 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1175 msg = (const struct GNUNET_TESTBED_PeerCreateMessage *) message;
1176 if (ntohl (msg->host_id) == master_context->host_id)
1181 /* We are responsible for this peer */
1182 msize -= sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
1183 config_size = ntohl (msg->config_size);
1184 config = GNUNET_malloc (config_size);
1185 dest_size = config_size;
1186 if (Z_OK != (ret = uncompress ((Bytef *) config, (uLongf *) &dest_size,
1187 (const Bytef *) &msg[1], (uLong) msize)))
1189 GNUNET_break (0); /* uncompression error */
1190 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1193 if (config_size != dest_size)
1195 GNUNET_break (0);/* Uncompressed config size mismatch */
1196 GNUNET_free (config);
1197 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1200 cfg = GNUNET_CONFIGURATION_create ();
1201 if (GNUNET_OK != GNUNET_CONFIGURATION_deserialize (cfg, config, config_size,
1204 GNUNET_break (0); /* Configuration parsing error */
1205 GNUNET_free (config);
1206 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1209 GNUNET_free (config);
1210 peer = GNUNET_malloc (sizeof (struct Peer));
1212 peer->id = ntohl (msg->peer_id);
1213 LOG_DEBUG ("Creating peer with id: %u\n", peer->id);
1214 peer->peer = GNUNET_TESTING_peer_configure (master_context->system, peer->cfg,
1218 if (NULL == peer->peer)
1220 LOG (GNUNET_ERROR_TYPE_WARNING, "Configuring peer failed: %s\n", emsg);
1223 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1226 peer_list_add (peer);
1227 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1231 /* Forward the peer to other host */
1233 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1238 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
1241 * @param client identification of the client
1242 * @param message the actual message
1245 handle_peer_destroy (void *cls,
1246 struct GNUNET_SERVER_Client *client,
1247 const struct GNUNET_MessageHeader *message)
1249 const struct GNUNET_TESTBED_PeerDestroyMessage *msg;
1250 struct GNUNET_TESTBED_GenericOperationSuccessEventMessage *reply;
1253 uint16_t reply_size;
1255 msg = (const struct GNUNET_TESTBED_PeerDestroyMessage *) message;
1256 peer_id = ntohl (msg->peer_id);
1257 LOG_DEBUG ("Received peer destory on peer: %u and operation id: %ul\n",
1258 peer_id, GNUNET_ntohll (msg->operation_id));
1259 if ((peer_list_size <= peer_id) || (NULL == peer_list[peer_id]))
1262 /* Reply with failure event message */
1263 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1266 GNUNET_TESTING_peer_destroy (peer_list[peer_id]->peer);
1267 GNUNET_CONFIGURATION_destroy (peer_list[peer_id]->cfg);
1268 GNUNET_free (peer_list[peer_id]);
1269 peer_list[peer_id] = NULL;
1270 for (id = 0; id < LIST_GROW_STEP; id++)
1272 if (((peer_id + id >= peer_list_size) ||
1273 (NULL != peer_list[peer_id])))
1276 if (LIST_GROW_STEP == id)
1278 peer_list_size -= LIST_GROW_STEP;
1279 peer_list = GNUNET_realloc (peer_list, peer_list_size);
1282 sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage);
1283 reply = GNUNET_malloc (reply_size);
1284 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS);
1285 reply->header.size = htons (reply_size);
1286 reply->operation_id = msg->operation_id;
1287 queue_message (client, &reply->header);
1288 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1293 * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
1296 * @param client identification of the client
1297 * @param message the actual message
1300 handle_peer_start (void *cls,
1301 struct GNUNET_SERVER_Client *client,
1302 const struct GNUNET_MessageHeader *message)
1304 const struct GNUNET_TESTBED_PeerStartMessage *msg;
1305 struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *reply;
1308 GNUNET_assert (ntohs (message->size)
1309 == sizeof (struct GNUNET_TESTBED_PeerStartMessage));
1310 msg = (const struct GNUNET_TESTBED_PeerStartMessage *) message;
1311 peer_id = ntohl (msg->peer_id);
1312 if ((peer_id >= peer_list_size)
1313 || (NULL == peer_list[peer_id])
1314 || (GNUNET_OK != GNUNET_TESTING_peer_start (peer_list[peer_id]->peer)))
1317 /* FIXME: reply with failure message */
1318 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1321 reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
1322 reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
1323 reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS);
1324 reply->peer_id = htonl (peer_id);
1325 reply->operation_id = msg->operation_id;
1326 queue_message (client, &reply->header);
1327 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1332 * Iterator over hash map entries.
1334 * @param cls closure
1335 * @param key current key code
1336 * @param value value in the hash map
1337 * @return GNUNET_YES if we should continue to
1342 ss_map_free_iterator (void *cls,
1343 const struct GNUNET_HashCode * key, void *value)
1345 struct SharedService *ss = value;
1347 GNUNET_assert (GNUNET_YES ==
1348 GNUNET_CONTAINER_multihashmap_remove (ss_map, key, value));
1349 GNUNET_free (ss->name);
1356 * Task to clean up and shutdown nicely
1359 * @param tc the TaskContext from scheduler
1362 shutdown_task (void *cls,
1363 const struct GNUNET_SCHEDULER_TaskContext *tc)
1365 struct LCFContextQueue *lcfq;
1368 shutdown_task_id = GNUNET_SCHEDULER_NO_TASK;
1369 LOG (GNUNET_ERROR_TYPE_DEBUG, "Shutting down testbed service\n");
1370 (void) GNUNET_CONTAINER_multihashmap_iterate (ss_map, &ss_map_free_iterator,
1372 GNUNET_CONTAINER_multihashmap_destroy (ss_map);
1375 GNUNET_DISK_file_close (fh);
1378 if (NULL != lcfq_head)
1380 if (GNUNET_SCHEDULER_NO_TASK != lcf_proc_task_id)
1382 GNUNET_SCHEDULER_cancel (lcf_proc_task_id);
1383 lcf_proc_task_id = GNUNET_SCHEDULER_NO_TASK;
1385 if (NULL != lcfq_head->lcf->rhandle)
1386 GNUNET_TESTBED_cancel_registration (lcfq_head->lcf->rhandle);
1388 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
1389 for (lcfq = lcfq_head; NULL != lcfq; lcfq = lcfq_head)
1391 GNUNET_free (lcfq->lcf->sxcfg);
1392 GNUNET_free (lcfq->lcf);
1393 GNUNET_CONTAINER_DLL_remove (lcfq_head, lcfq_tail, lcfq);
1396 /* Clear peer list */
1397 for (id = 0; id < peer_list_size; id++)
1398 if (NULL != peer_list[id])
1400 GNUNET_TESTING_peer_destroy (peer_list[id]->peer);
1401 GNUNET_CONFIGURATION_destroy (peer_list[id]->cfg);
1402 GNUNET_free (peer_list[id]);
1404 GNUNET_free_non_null (peer_list);
1405 /* Clear host list */
1406 for (id = 0; id < host_list_size; id++)
1407 if (NULL != host_list[id])
1408 GNUNET_TESTBED_host_destroy (host_list[id]);
1409 GNUNET_free_non_null (host_list);
1410 /* Clear route list */
1411 for (id = 0; id < route_list_size; id++)
1412 if (NULL != route_list[id])
1413 GNUNET_free (route_list[id]);
1414 GNUNET_free_non_null (route_list);
1415 /* Clear slave_list */
1416 for (id = 0; id < slave_list_size; id++)
1417 if (NULL != slave_list[id])
1419 GNUNET_assert (NULL != slave_list[id]->controller);
1420 GNUNET_TESTBED_controller_disconnect (slave_list[id]->controller);
1421 if (NULL != slave_list[id]->controller_proc)
1422 GNUNET_TESTBED_controller_stop (slave_list[id]->controller_proc);
1424 GNUNET_free_non_null (master_context->master_ip);
1425 if (NULL != master_context->system)
1426 GNUNET_TESTING_system_destroy (master_context->system, GNUNET_YES);
1427 GNUNET_free_non_null (master_context);
1432 * Debug shutdown task in case of stdin getting closed
1435 * @param tc the TaskContext from scheduler
1438 shutdown_task_ (void *cls,
1439 const struct GNUNET_SCHEDULER_TaskContext *tc)
1441 LOG (GNUNET_ERROR_TYPE_DEBUG, "STDIN closed ...\n");
1442 shutdown_task (cls, tc);
1447 * Callback for client disconnect
1450 * @param client the client which has disconnected
1453 client_disconnect_cb (void *cls, struct GNUNET_SERVER_Client *client)
1455 if (NULL == master_context)
1457 if (client == master_context->client)
1459 LOG (GNUNET_ERROR_TYPE_DEBUG, "Master client disconnected\n");
1460 GNUNET_SERVER_client_drop (client);
1461 /* should not be needed as we're terminated by failure to read
1462 from stdin, but if stdin fails for some reason, this shouldn't
1463 hurt for now --- might need to revise this later if we ever
1464 decide that master connections might be temporarily down
1466 GNUNET_SCHEDULER_shutdown ();
1474 * @param cls closure
1475 * @param server the initialized server
1476 * @param cfg configuration to use
1479 testbed_run (void *cls,
1480 struct GNUNET_SERVER_Handle *server,
1481 const struct GNUNET_CONFIGURATION_Handle *cfg)
1483 static const struct GNUNET_SERVER_MessageHandler message_handlers[] =
1485 {&handle_init, NULL, GNUNET_MESSAGE_TYPE_TESTBED_INIT,
1486 sizeof (struct GNUNET_TESTBED_InitMessage)},
1487 {&handle_add_host, NULL, GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST, 0},
1488 {&handle_configure_shared_service, NULL,
1489 GNUNET_MESSAGE_TYPE_TESTBED_SERVICESHARE, 0},
1490 {&handle_link_controllers, NULL,
1491 GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS, 0},
1492 {&handle_peer_create, NULL, GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER, 0},
1493 {&handle_peer_destroy, NULL, GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER,
1494 sizeof (struct GNUNET_TESTBED_PeerDestroyMessage)},
1495 {&handle_peer_start, NULL, GNUNET_MESSAGE_TYPE_TESTBED_STARTPEER,
1496 sizeof (struct GNUNET_TESTBED_PeerStartMessage)},
1500 config = GNUNET_CONFIGURATION_dup (cfg);
1501 GNUNET_SERVER_add_handlers (server,
1503 GNUNET_SERVER_disconnect_notify (server,
1504 &client_disconnect_cb,
1506 ss_map = GNUNET_CONTAINER_multihashmap_create (5);
1507 fh = GNUNET_DISK_get_handle_from_native (stdin);
1510 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
1515 GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
1519 LOG_DEBUG ("Testbed startup complete\n");
1524 * The starting point of execution
1526 int main (int argc, char *const *argv)
1530 GNUNET_SERVICE_run (argc,
1533 GNUNET_SERVICE_OPTION_NONE,