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22 * @file rps/gnunet-service-rps.c
23 * @brief rps service implementation
24 * @author Julius Bünger
27 #include "gnunet_util_lib.h"
28 #include "gnunet_cadet_service.h"
29 #include "gnunet_peerinfo_service.h"
30 #include "gnunet_nse_service.h"
32 #include "rps-test_util.h"
34 #include "gnunet-service-rps_sampler.h"
39 #define LOG(kind, ...) GNUNET_log(kind, __VA_ARGS__)
41 // TODO modify @brief in every file
43 // TODO check for overflows
45 // TODO align message structs
47 // TODO connect to friends
49 // TODO store peers somewhere persistent
51 // TODO blacklist? (-> mal peer detection on top of brahms)
53 // TODO API request_cancel
55 // TODO don't pass peermap all the time
57 // hist_size_init, hist_size_max
62 static const struct GNUNET_CONFIGURATION_Handle *cfg;
67 static struct GNUNET_PeerIdentity own_identity;
70 struct GNUNET_PeerIdentity *
71 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list, unsigned int size,
72 const struct GNUNET_PeerIdentity *ignore_list, unsigned int ignore_size);
75 /***********************************************************************
76 * Housekeeping with peers
77 ***********************************************************************/
80 * Struct used to store the context of a connected client.
85 * The message queue to communicate with the client.
87 struct GNUNET_MQ_Handle *mq;
91 * Used to keep track in what lists single peerIDs are.
95 PULL_REPLY_PENDING = 0x01,
96 IN_OTHER_GOSSIP_LIST = 0x02, // unneeded?
97 IN_OWN_SAMPLER_LIST = 0x04, // unneeded?
98 IN_OWN_GOSSIP_LIST = 0x08, // unneeded?
101 * We set this bit when we can be sure the other peer is/was live.
106 * We set this bit when we are going to destroy the channel to this peer.
107 * When cleanup_channel is called, we know that we wanted to destroy it.
108 * Otherwise the channel to the other peer was destroyed.
115 * Functions of this type can be used to be stored at a peer for later execution.
117 typedef void (* PeerOp) (void *cls, const struct GNUNET_PeerIdentity *peer);
120 * Outstanding operation on peer consisting of callback and closure
122 struct PeerOutstandingOp
137 * Struct used to keep track of other peer's status
139 * This is stored in a multipeermap.
144 * Flags indicating status of peer
149 * Message queue open to client
151 struct GNUNET_MQ_Handle *mq;
154 * Channel open to client.
156 struct GNUNET_CADET_Channel *send_channel;
159 * Channel open from client.
161 struct GNUNET_CADET_Channel *recv_channel; // unneeded?
164 * Array of outstanding operations on this peer.
166 struct PeerOutstandingOp *outstanding_ops;
169 * Number of outstanding operations.
171 unsigned int num_outstanding_ops;
172 //size_t num_outstanding_ops;
175 * Handle to the callback given to cadet_ntfy_tmt_rdy()
177 * To be canceled on shutdown.
179 struct GNUNET_CADET_TransmitHandle *is_live_task;
182 * Identity of the peer
184 struct GNUNET_PeerIdentity peer_id;
187 * This is pobably followed by 'statistical' data (when we first saw
188 * him, how did we get his ID, how many pushes (in a timeinterval),
193 /***********************************************************************
194 * /Housekeeping with peers
195 ***********************************************************************/
201 /***********************************************************************
203 ***********************************************************************/
206 * Sampler used for the Brahms protocol itself.
208 static struct RPS_Sampler *prot_sampler;
211 * Sampler used for the clients.
213 static struct RPS_Sampler *client_sampler;
216 * Set of all peers to keep track of them.
218 static struct GNUNET_CONTAINER_MultiPeerMap *peer_map;
222 * Name to log view to
224 static char *file_name_view_log;
227 * The "local view" containing peers we learned from gossip and history
229 static struct GNUNET_CONTAINER_MultiPeerMap *view;
232 * An array containing the peers of the local view.
234 * This is created every time we send a pull reply if it has changed since the
235 * last pull reply we sent.
237 static struct GNUNET_PeerIdentity *view_array;
241 * The size of sampler we need to be able to satisfy the client's need of
244 static unsigned int sampler_size_client_need;
247 * The size of sampler we need to be able to satisfy the Brahms protocol's
248 * need of random peers.
250 * This is one minimum size the sampler grows to.
252 static unsigned int sampler_size_est_need;
256 * Percentage of total peer number in the view
257 * to send random PUSHes to
262 * Percentage of total peer number in the view
263 * to send random PULLs to
268 * The percentage gamma of history updates.
269 * Simply 1 - alpha - beta
274 * Identifier for the main task that runs periodically.
276 static struct GNUNET_SCHEDULER_Task *do_round_task;
279 * Time inverval the do_round task runs in.
281 static struct GNUNET_TIME_Relative round_interval;
286 * List to store peers received through pushes temporary.
288 * TODO -> multipeermap
290 static struct GNUNET_PeerIdentity *push_list;
293 * Size of the push_list;
295 static unsigned int push_list_size;
296 //size_t push_list_size;
299 * List to store peers received through pulls temporary.
301 * TODO -> multipeermap
303 static struct GNUNET_PeerIdentity *pull_list;
306 * Size of the pull_list;
308 static unsigned int pull_list_size;
309 //size_t pull_list_size;
315 static struct GNUNET_NSE_Handle *nse;
320 static struct GNUNET_CADET_Handle *cadet_handle;
323 * Handler to PEERINFO.
325 static struct GNUNET_PEERINFO_Handle *peerinfo_handle;
328 * Handle for cancellation of iteration over peers.
330 struct GNUNET_PEERINFO_NotifyContext *peerinfo_notify_handle;
336 * Only needed in the beginning to check how many of the 64 deltas
339 static unsigned int req_counter;
342 * Time of the last request we received.
344 * Used to compute the expected request rate.
346 static struct GNUNET_TIME_Absolute last_request;
349 * Size of #request_deltas.
351 #define REQUEST_DELTAS_SIZE 64
352 static unsigned int request_deltas_size = REQUEST_DELTAS_SIZE;
355 * Last 64 deltas between requests
357 static struct GNUNET_TIME_Relative request_deltas[REQUEST_DELTAS_SIZE];
360 * The prediction of the rate of requests
362 static struct GNUNET_TIME_Relative request_rate;
366 * Number of history update tasks.
368 uint32_t num_hist_update_tasks;
372 * Closure used to pass the client and the id to the callback
373 * that replies to a client's request
378 * The identifier of the request
383 * The client handle to send the reply to
385 struct GNUNET_SERVER_Client *client;
389 #ifdef ENABLE_MALICIOUS
391 * Type of malicious peer
393 * 0 Don't act malicious at all - Default
394 * 1 Try to maximise representation
395 * 2 Try to partition the network
398 uint32_t mal_type = 0;
401 * Other malicious peers
403 static struct GNUNET_PeerIdentity *mal_peers = NULL;
406 * Hashmap of malicious peers used as set.
407 * Used to more efficiently check whether we know that peer.
409 static struct GNUNET_CONTAINER_MultiPeerMap *mal_peer_set = NULL;
412 * Number of other malicious peers
414 static uint32_t num_mal_peers = 0;
418 * If type is 2 This struct is used to store the attacked peers in a DLL
425 struct AttackedPeer *next;
426 struct AttackedPeer *prev;
431 struct GNUNET_PeerIdentity peer_id;
435 * If type is 2 this is the DLL of attacked peers
437 static struct AttackedPeer *att_peers_head = NULL;
438 static struct AttackedPeer *att_peers_tail = NULL;
441 * This index is used to point to an attacked peer to
442 * implement the round-robin-ish way to select attacked peers.
444 static struct AttackedPeer *att_peer_index = NULL;
447 * Hashmap of attacked peers used as set.
448 * Used to more efficiently check whether we know that peer.
450 static struct GNUNET_CONTAINER_MultiPeerMap *att_peer_set = NULL;
453 * Number of attacked peers
455 static uint32_t num_attacked_peers = 0;
459 * If type is 1 this is the attacked peer
461 static struct GNUNET_PeerIdentity attacked_peer;
464 * The limit of PUSHes we can send in one round.
465 * This is an assumption of the Brahms protocol and either implemented
468 * assumend to be the bandwidth limitation.
470 static uint32_t push_limit = 10000;
471 #endif /* ENABLE_MALICIOUS */
474 /***********************************************************************
476 ***********************************************************************/
483 /***********************************************************************
485 ***********************************************************************/
488 * Set a peer flag of given peer context.
490 #define set_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags |= mask)
493 * Get peer flag of given peer context.
495 #define get_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags & mask ? GNUNET_YES : GNUNET_NO)
498 * Unset flag of given peer context.
500 #define unset_peer_flag(peer_ctx, mask) (peer_ctx->peer_flags &= (~mask))
503 * Clean the send channel of a peer
506 peer_clean (const struct GNUNET_PeerIdentity *peer);
510 * Check if peer is already in peer array.
513 in_arr (const struct GNUNET_PeerIdentity *array,
514 unsigned int arr_size,
515 const struct GNUNET_PeerIdentity *peer)
517 GNUNET_assert (NULL != peer);
522 GNUNET_assert (NULL != array);
526 for (i = 0; i < arr_size ; i++)
527 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&array[i], peer))
534 * Print peerlist to log.
537 print_peer_list (struct GNUNET_PeerIdentity *list, unsigned int len)
541 LOG (GNUNET_ERROR_TYPE_DEBUG,
542 "Printing peer list of length %u at %p:\n",
545 for (i = 0 ; i < len ; i++)
547 LOG (GNUNET_ERROR_TYPE_DEBUG,
549 i, GNUNET_i2s (&list[i]));
555 * Remove peer from list.
558 rem_from_list (struct GNUNET_PeerIdentity **peer_list,
559 unsigned int *list_size,
560 const struct GNUNET_PeerIdentity *peer)
563 struct GNUNET_PeerIdentity *tmp;
567 LOG (GNUNET_ERROR_TYPE_DEBUG,
568 "Removing peer %s from list at %p\n",
572 for ( i = 0 ; i < *list_size ; i++ )
574 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&tmp[i], peer))
576 if (i < *list_size -1)
577 { /* Not at the last entry -- shift peers left */
578 memcpy (&tmp[i], &tmp[i +1],
579 ((*list_size) - i -1) * sizeof (struct GNUNET_PeerIdentity));
581 /* Remove last entry (should be now useless PeerID) */
582 GNUNET_array_grow (tmp, *list_size, (*list_size) -1);
589 * Get random peer from the given list but don't return one from the @a ignore_list.
591 struct GNUNET_PeerIdentity *
592 get_rand_peer_ignore_list (const struct GNUNET_PeerIdentity *peer_list,
594 const struct GNUNET_PeerIdentity *ignore_list,
595 uint32_t ignore_size)
599 struct GNUNET_PeerIdentity *tmp_peer_list;
600 struct GNUNET_PeerIdentity *peer;
602 GNUNET_assert (NULL != peer_list);
607 tmp_peer_list = NULL;
608 GNUNET_array_grow (tmp_peer_list, tmp_size, list_size);
609 memcpy (tmp_peer_list,
611 list_size * sizeof (struct GNUNET_PeerIdentity));
612 peer = GNUNET_new (struct GNUNET_PeerIdentity);
615 * Choose the r_index of the peer we want to return
616 * at random from the interval of the view
618 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
620 *peer = tmp_peer_list[r_index];
622 while (in_arr (ignore_list, ignore_size, peer))
624 rem_from_list (&tmp_peer_list, &tmp_size, peer);
626 print_peer_list (tmp_peer_list, tmp_size);
635 * Choose the r_index of the peer we want to return
636 * at random from the interval of the view
638 r_index = GNUNET_CRYPTO_random_u64 (GNUNET_CRYPTO_QUALITY_STRONG,
640 *peer = tmp_peer_list[r_index];
644 GNUNET_array_grow (tmp_peer_list, tmp_size, 0);
651 * Get the context of a peer. If not existing, create.
654 get_peer_ctx (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
655 const struct GNUNET_PeerIdentity *peer)
657 struct PeerContext *ctx;
659 if ( GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
661 ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
665 ctx = GNUNET_new (struct PeerContext);
668 ctx->send_channel = NULL;
669 ctx->recv_channel = NULL;
670 ctx->outstanding_ops = NULL;
671 ctx->num_outstanding_ops = 0;
672 ctx->is_live_task = NULL;
673 ctx->peer_id = *peer;
674 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer, ctx,
675 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
682 * Put random peer from sampler into the view as history update.
685 hist_update (void *cls, struct GNUNET_PeerIdentity *ids, uint32_t num_peers)
689 for (i = 0; i < GNUNET_MIN (
690 sampler_size_est_need - GNUNET_CONTAINER_multipeermap_size (view),
693 if (GNUNET_OK != GNUNET_CONTAINER_multipeermap_put (view,
696 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
698 LOG (GNUNET_ERROR_TYPE_WARNING,
699 "Failed to put peer in peermap. (hist_update)\n");
702 /* Might want to check that we really updated the view */
703 if (NULL != view_array)
705 GNUNET_free (view_array);
709 to_file (file_name_view_log,
711 GNUNET_i2s_full (ids));
714 if (0 < num_hist_update_tasks)
715 num_hist_update_tasks--;
720 * Set the peer flag to living and call the outstanding operations on this peer.
723 peer_is_live (struct PeerContext *peer_ctx)
725 struct GNUNET_PeerIdentity *peer;
727 /* Cancle is_live_task if still scheduled */
728 if (NULL != peer_ctx->is_live_task)
730 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
731 peer_ctx->is_live_task = NULL;
734 peer = &peer_ctx->peer_id;
735 set_peer_flag (peer_ctx, VALID);
737 LOG (GNUNET_ERROR_TYPE_DEBUG, "Peer %s is live\n", GNUNET_i2s (peer));
739 if (0 < peer_ctx->num_outstanding_ops)
740 { /* Call outstanding operations */
743 for (i = 0 ; i < peer_ctx->num_outstanding_ops ; i++)
744 peer_ctx->outstanding_ops[i].op (peer_ctx->outstanding_ops[i].op_cls, peer);
745 GNUNET_array_grow (peer_ctx->outstanding_ops, peer_ctx->num_outstanding_ops, 0);
753 * Callback that is called when a channel was effectively established.
754 * This is given to ntfy_tmt_rdy and called when the channel was
755 * successfully established.
758 cadet_ntfy_tmt_rdy_cb (void *cls, size_t size, void *buf)
760 struct PeerContext *peer_ctx = (struct PeerContext *) cls;
762 peer_ctx->is_live_task = NULL;
763 LOG (GNUNET_ERROR_TYPE_DEBUG,
764 "Set ->is_live_task = NULL for peer %s\n",
765 GNUNET_i2s (&peer_ctx->peer_id));
770 peer_is_live (peer_ctx);
774 LOG (GNUNET_ERROR_TYPE_WARNING,
775 "Problems establishing a connection to peer %s in order to check liveliness\n",
776 GNUNET_i2s (&peer_ctx->peer_id));
777 // TODO reschedule? cleanup?
780 //if (NULL != peer_ctx->is_live_task)
782 // LOG (GNUNET_ERROR_TYPE_DEBUG,
783 // "Trying to cancle is_live_task for peer %s\n",
784 // GNUNET_i2s (&peer_ctx->peer_id));
785 // GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
786 // peer_ctx->is_live_task = NULL;
794 * Get the channel of a peer. If not existing, create.
796 struct GNUNET_CADET_Channel *
797 get_channel (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
798 const struct GNUNET_PeerIdentity *peer)
800 struct PeerContext *peer_ctx;
802 peer_ctx = get_peer_ctx (peer_map, peer);
804 if (NULL == peer_ctx->send_channel)
806 LOG (GNUNET_ERROR_TYPE_DEBUG,
807 "Trying to establish channel to peer %s\n",
810 peer_ctx->send_channel =
811 GNUNET_CADET_channel_create (cadet_handle,
814 GNUNET_RPS_CADET_PORT,
815 GNUNET_CADET_OPTION_RELIABLE);
818 return peer_ctx->send_channel;
823 * Get the message queue of a specific peer.
825 * If we already have a message queue open to this client,
826 * simply return it, otherways create one.
828 struct GNUNET_MQ_Handle *
829 get_mq (struct GNUNET_CONTAINER_MultiPeerMap *peer_map,
830 const struct GNUNET_PeerIdentity *peer_id)
832 struct PeerContext *peer_ctx;
834 peer_ctx = get_peer_ctx (peer_map, peer_id);
836 GNUNET_assert (NULL == peer_ctx->is_live_task);
838 if (NULL == peer_ctx->mq)
840 (void) get_channel (peer_map, peer_id);
841 peer_ctx->mq = GNUNET_CADET_mq_create (peer_ctx->send_channel);
842 //do I have to explicitly put it in the peer_map?
843 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, peer_id, peer_ctx,
844 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
851 * Issue check whether peer is live
853 * @param peer_ctx the context of the peer
856 check_peer_live (struct PeerContext *peer_ctx)
858 LOG (GNUNET_ERROR_TYPE_DEBUG,
859 "Get informed about peer %s getting live\n",
860 GNUNET_i2s (&peer_ctx->peer_id));
862 if (NULL == peer_ctx->is_live_task &&
863 NULL == peer_ctx->send_channel)
865 (void) get_channel (peer_map, &peer_ctx->peer_id);
866 peer_ctx->is_live_task =
867 GNUNET_CADET_notify_transmit_ready (peer_ctx->send_channel,
869 GNUNET_TIME_UNIT_FOREVER_REL,
870 sizeof (struct GNUNET_MessageHeader),
871 cadet_ntfy_tmt_rdy_cb,
874 else if (NULL != peer_ctx->is_live_task)
875 LOG (GNUNET_ERROR_TYPE_DEBUG,
876 "Already waiting for notification\n");
877 else if (NULL != peer_ctx->send_channel)
878 LOG (GNUNET_ERROR_TYPE_DEBUG,
879 "Already have established channel to peer\n");
884 * Sum all time relatives of an array.
886 struct GNUNET_TIME_Relative
887 T_relative_sum (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
889 struct GNUNET_TIME_Relative sum;
892 sum = GNUNET_TIME_UNIT_ZERO;
893 for ( i = 0 ; i < arr_size ; i++ )
895 sum = GNUNET_TIME_relative_add (sum, rel_array[i]);
902 * Compute the average of given time relatives.
904 struct GNUNET_TIME_Relative
905 T_relative_avg (const struct GNUNET_TIME_Relative *rel_array, uint32_t arr_size)
907 return GNUNET_TIME_relative_divide (T_relative_sum (rel_array, arr_size), arr_size);
912 * Insert PeerID in #pull_list
914 * Called once we know a peer is live.
917 insert_in_pull_list (void *cls, const struct GNUNET_PeerIdentity *peer)
919 if (GNUNET_NO == in_arr (pull_list, pull_list_size, peer))
920 GNUNET_array_append (pull_list, pull_list_size, *peer);
924 * Check whether #insert_in_pull_list was already scheduled
927 insert_in_pull_list_scheduled (const struct PeerContext *peer_ctx)
931 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
932 if (insert_in_pull_list == peer_ctx->outstanding_ops[i].op)
939 * Insert PeerID in #view
941 * Called once we know a peer is live.
944 insert_in_view (void *cls, const struct GNUNET_PeerIdentity *peer)
946 if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_put (view,
949 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
951 LOG (GNUNET_ERROR_TYPE_WARNING,
952 "Failed to put peer into view. (insert_in_view)\n");
955 /* Might want to check whether we really modified the view */
956 if (NULL != view_array)
958 GNUNET_free (view_array);
962 (void) get_channel (peer_map, peer);
966 * Check whether #insert_in_view was already scheduled
969 insert_in_view_scheduled (const struct PeerContext *peer_ctx)
973 for ( i = 0 ; i < peer_ctx->num_outstanding_ops ; i++ )
974 if (insert_in_view == peer_ctx->outstanding_ops[i].op)
981 * Update sampler with given PeerID.
984 insert_in_sampler (void *cls, const struct GNUNET_PeerIdentity *peer)
986 LOG (GNUNET_ERROR_TYPE_DEBUG,
987 "Updating samplers with peer %s from insert_in_sampler()\n",
989 RPS_sampler_update (prot_sampler, peer);
990 RPS_sampler_update (client_sampler, peer);
995 * Check whether #insert_in_sampler was already scheduled
998 insert_in_sampler_scheduled (const struct PeerContext *peer_ctx)
1002 for (i = 0 ; i < peer_ctx->num_outstanding_ops ; i++)
1003 if (insert_in_sampler== peer_ctx->outstanding_ops[i].op)
1010 * Wrapper around #RPS_sampler_resize()
1012 * If we do not have enough sampler elements, double current sampler size
1013 * If we have more than enough sampler elements, halv current sampler size
1016 resize_wrapper (struct RPS_Sampler *sampler, uint32_t new_size)
1018 unsigned int sampler_size;
1021 // TODO respect the min, max
1022 sampler_size = RPS_sampler_get_size (sampler);
1023 if (sampler_size > new_size * 4)
1025 RPS_sampler_resize (sampler, sampler_size / 2);
1027 else if (sampler_size < new_size)
1029 RPS_sampler_resize (sampler, sampler_size * 2);
1031 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size is now %u\n", sampler_size);
1036 * Wrapper around #RPS_sampler_resize() resizing the client sampler
1039 client_resize_wrapper ()
1041 uint32_t bigger_size;
1045 bigger_size = GNUNET_MAX (sampler_size_est_need, sampler_size_client_need);
1047 // TODO respect the min, max
1048 resize_wrapper (client_sampler, bigger_size);
1049 LOG (GNUNET_ERROR_TYPE_DEBUG, "sampler_size_client is now %" PRIu32 "\n",
1055 * Estimate request rate
1057 * Called every time we receive a request from the client.
1062 struct GNUNET_TIME_Relative max_round_duration;
1064 if (request_deltas_size > req_counter)
1066 if ( 1 < req_counter)
1068 /* Shift last request deltas to the right */
1069 memcpy (&request_deltas[1],
1071 (req_counter - 1) * sizeof (struct GNUNET_TIME_Relative));
1073 /* Add current delta to beginning */
1075 GNUNET_TIME_absolute_get_difference (last_request,
1076 GNUNET_TIME_absolute_get ());
1077 request_rate = T_relative_avg (request_deltas, req_counter);
1079 /* Compute the duration a round will maximally take */
1080 max_round_duration =
1081 GNUNET_TIME_relative_add (round_interval,
1082 GNUNET_TIME_relative_divide (round_interval, 2));
1084 /* Set the estimated size the sampler has to have to
1085 * satisfy the current client request rate */
1086 sampler_size_client_need =
1087 max_round_duration.rel_value_us / request_rate.rel_value_us;
1089 /* Resize the sampler */
1090 client_resize_wrapper ();
1092 last_request = GNUNET_TIME_absolute_get ();
1097 * Add all peers in @a peer_array to @a peer_map used as set.
1099 * @param peer_array array containing the peers
1100 * @param num_peers number of peers in @peer_array
1101 * @param peer_map the peermap to use as set
1104 add_peer_array_to_set (const struct GNUNET_PeerIdentity *peer_array,
1105 unsigned int num_peers,
1106 struct GNUNET_CONTAINER_MultiPeerMap *peer_map)
1109 if (NULL == peer_map)
1111 LOG (GNUNET_ERROR_TYPE_WARNING,
1112 "Trying to add peers to an empty peermap.\n");
1116 for (i = 0; i < num_peers; i++)
1118 GNUNET_CONTAINER_multipeermap_put (peer_map,
1121 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
1127 * Send a PULL REPLY to @a peer_id
1129 * @param peer_id the peer to send the reply to.
1130 * @param peer_ids the peers to send to @a peer_id
1131 * @param num_peer_ids the number of peers to send to @a peer_id
1134 send_pull_reply (const struct GNUNET_PeerIdentity *peer_id,
1135 const struct GNUNET_PeerIdentity *peer_ids,
1136 unsigned int num_peer_ids)
1139 struct GNUNET_MQ_Handle *mq;
1140 struct GNUNET_MQ_Envelope *ev;
1141 struct GNUNET_RPS_P2P_PullReplyMessage *out_msg;
1143 /* Compute actual size */
1144 send_size = sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) +
1145 num_peer_ids * sizeof (struct GNUNET_PeerIdentity);
1147 if (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE < send_size)
1148 /* Compute number of peers to send
1149 * If too long, simply truncate */
1150 // TODO select random ones via permutation
1151 // or even better: do good protocol design
1153 (GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE -
1154 sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1155 sizeof (struct GNUNET_PeerIdentity);
1157 send_size = num_peer_ids;
1159 LOG (GNUNET_ERROR_TYPE_DEBUG,
1160 "PULL REQUEST from peer %s received, going to send %u peers\n",
1161 GNUNET_i2s (peer_id), send_size);
1163 mq = get_mq (peer_map, peer_id);
1165 ev = GNUNET_MQ_msg_extra (out_msg,
1166 send_size * sizeof (struct GNUNET_PeerIdentity),
1167 GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY);
1168 out_msg->num_peers = htonl (send_size);
1169 memcpy (&out_msg[1], peer_ids,
1170 send_size * sizeof (struct GNUNET_PeerIdentity));
1172 GNUNET_MQ_send (mq, ev);
1177 * This function is called on new peer_ids from 'external' sources
1178 * (client seed, cadet get_peers(), ...)
1180 * @param peer_id the new peer_id
1183 new_peer_id (const struct GNUNET_PeerIdentity *peer_id)
1185 struct PeerOutstandingOp out_op;
1186 struct PeerContext *peer_ctx;
1188 if (NULL != peer_id &&
1189 0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, peer_id))
1191 LOG (GNUNET_ERROR_TYPE_DEBUG,
1192 "Got peer_id %s (at %p, view size: %u)\n",
1193 GNUNET_i2s (peer_id),
1195 GNUNET_CONTAINER_multipeermap_size (view));
1197 peer_ctx = get_peer_ctx (peer_map, peer_id);
1198 if (GNUNET_YES != get_peer_flag (peer_ctx, VALID))
1200 if (GNUNET_NO == insert_in_sampler_scheduled (peer_ctx))
1202 out_op.op = insert_in_sampler;
1203 out_op.op_cls = NULL;
1204 GNUNET_array_append (peer_ctx->outstanding_ops,
1205 peer_ctx->num_outstanding_ops,
1209 if (GNUNET_NO == insert_in_view_scheduled (peer_ctx))
1211 out_op.op = insert_in_view;
1212 out_op.op_cls = NULL;
1213 GNUNET_array_append (peer_ctx->outstanding_ops,
1214 peer_ctx->num_outstanding_ops,
1218 /* Trigger livelyness test on peer */
1219 check_peer_live (peer_ctx);
1223 // send push/pull to each of those peers?
1228 /***********************************************************************
1230 ***********************************************************************/
1237 * Function called by NSE.
1239 * Updates sizes of sampler list and view and adapt those lists
1243 nse_callback (void *cls, struct GNUNET_TIME_Absolute timestamp,
1244 double logestimate, double std_dev)
1247 //double scale; // TODO this might go gloabal/config
1249 LOG (GNUNET_ERROR_TYPE_DEBUG,
1250 "Received a ns estimate - logest: %f, std_dev: %f (old_size: %u)\n",
1251 logestimate, std_dev, RPS_sampler_get_size (prot_sampler));
1253 estimate = GNUNET_NSE_log_estimate_to_n (logestimate);
1254 // GNUNET_NSE_log_estimate_to_n (logestimate);
1255 estimate = pow (estimate, 1.0 / 3);
1256 // TODO add if std_dev is a number
1257 // estimate += (std_dev * scale);
1258 if (2 < ceil (estimate))
1260 LOG (GNUNET_ERROR_TYPE_DEBUG, "Changing estimate to %f\n", estimate);
1261 sampler_size_est_need = estimate;
1263 LOG (GNUNET_ERROR_TYPE_DEBUG, "Not using estimate %f\n", estimate);
1265 /* If the NSE has changed adapt the lists accordingly */
1266 resize_wrapper (prot_sampler, sampler_size_est_need);
1267 client_resize_wrapper ();
1272 * Callback called once the requested PeerIDs are ready.
1274 * Sends those to the requesting client.
1276 void client_respond (void *cls,
1277 struct GNUNET_PeerIdentity *peer_ids, uint32_t num_peers)
1280 struct GNUNET_MQ_Envelope *ev;
1281 struct GNUNET_RPS_CS_ReplyMessage *out_msg;
1282 struct ReplyCls *reply_cls = (struct ReplyCls *) cls;
1283 uint32_t size_needed;
1284 struct ClientContext *cli_ctx;
1286 LOG (GNUNET_ERROR_TYPE_DEBUG,
1287 "sampler returned %" PRIu32 " peers:\n",
1289 for (i = 0; i < num_peers; i++)
1291 LOG (GNUNET_ERROR_TYPE_DEBUG,
1294 GNUNET_i2s (&peer_ids[i]));
1297 size_needed = sizeof (struct GNUNET_RPS_CS_ReplyMessage) +
1298 num_peers * sizeof (struct GNUNET_PeerIdentity);
1300 GNUNET_assert (GNUNET_SERVER_MAX_MESSAGE_SIZE >= size_needed);
1302 ev = GNUNET_MQ_msg_extra (out_msg,
1303 num_peers * sizeof (struct GNUNET_PeerIdentity),
1304 GNUNET_MESSAGE_TYPE_RPS_CS_REPLY);
1305 out_msg->num_peers = htonl (num_peers);
1306 out_msg->id = htonl (reply_cls->id);
1308 memcpy (&out_msg[1],
1310 num_peers * sizeof (struct GNUNET_PeerIdentity));
1311 GNUNET_free (peer_ids);
1313 cli_ctx = GNUNET_SERVER_client_get_user_context (reply_cls->client, struct ClientContext);
1314 if (NULL == cli_ctx) {
1315 cli_ctx = GNUNET_new (struct ClientContext);
1316 cli_ctx->mq = GNUNET_MQ_queue_for_server_client (reply_cls->client);
1317 GNUNET_SERVER_client_set_user_context (reply_cls->client, cli_ctx);
1320 GNUNET_free (reply_cls);
1322 GNUNET_MQ_send (cli_ctx->mq, ev);
1327 * Handle RPS request from the client.
1329 * @param cls closure
1330 * @param client identification of the client
1331 * @param message the actual message
1334 handle_client_request (void *cls,
1335 struct GNUNET_SERVER_Client *client,
1336 const struct GNUNET_MessageHeader *message)
1338 struct GNUNET_RPS_CS_RequestMessage *msg;
1340 uint32_t size_needed;
1341 struct ReplyCls *reply_cls;
1344 msg = (struct GNUNET_RPS_CS_RequestMessage *) message;
1346 num_peers = ntohl (msg->num_peers);
1347 size_needed = sizeof (struct GNUNET_RPS_CS_RequestMessage) +
1348 num_peers * sizeof (struct GNUNET_PeerIdentity);
1350 if (GNUNET_SERVER_MAX_MESSAGE_SIZE < size_needed)
1352 GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
1356 for (i = 0 ; i < num_peers ; i++)
1359 LOG (GNUNET_ERROR_TYPE_DEBUG,
1360 "Client requested %" PRIu32 " random peer(s).\n",
1363 reply_cls = GNUNET_new (struct ReplyCls);
1364 reply_cls->id = ntohl (msg->id);
1365 reply_cls->client = client;
1367 RPS_sampler_get_n_rand_peers (client_sampler,
1372 GNUNET_SERVER_receive_done (client,
1378 * Handle seed from the client.
1380 * @param cls closure
1381 * @param client identification of the client
1382 * @param message the actual message
1385 handle_client_seed (void *cls,
1386 struct GNUNET_SERVER_Client *client,
1387 const struct GNUNET_MessageHeader *message)
1389 struct GNUNET_RPS_CS_SeedMessage *in_msg;
1390 struct GNUNET_PeerIdentity *peers;
1394 if (sizeof (struct GNUNET_RPS_CS_SeedMessage) > ntohs (message->size))
1396 GNUNET_break_op (0);
1397 GNUNET_SERVER_receive_done (client,
1401 in_msg = (struct GNUNET_RPS_CS_SeedMessage *) message;
1402 num_peers = ntohl (in_msg->num_peers);
1403 peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
1404 //peers = GNUNET_new_array (num_peers, struct GNUNET_PeerIdentity);
1405 //memcpy (peers, &in_msg[1], num_peers * sizeof (struct GNUNET_PeerIdentity));
1407 if ((ntohs (message->size) - sizeof (struct GNUNET_RPS_CS_SeedMessage)) /
1408 sizeof (struct GNUNET_PeerIdentity) != num_peers)
1410 GNUNET_break_op (0);
1411 GNUNET_SERVER_receive_done (client,
1415 LOG (GNUNET_ERROR_TYPE_DEBUG,
1416 "Client seeded peers:\n");
1417 print_peer_list (peers, num_peers);
1419 for (i = 0 ; i < num_peers ; i++)
1421 LOG (GNUNET_ERROR_TYPE_DEBUG,
1422 "Updating samplers with seed %" PRIu32 ": %s\n",
1424 GNUNET_i2s (&peers[i]));
1426 new_peer_id (&peers[i]);
1428 //RPS_sampler_update (prot_sampler, &peers[i]);
1429 //RPS_sampler_update (client_sampler, &peers[i]);
1432 ////GNUNET_free (peers);
1434 GNUNET_SERVER_receive_done (client,
1440 * Handle a PUSH message from another peer.
1442 * Check the proof of work and store the PeerID
1443 * in the temporary list for pushed PeerIDs.
1445 * @param cls Closure
1446 * @param channel The channel the PUSH was received over
1447 * @param channel_ctx The context associated with this channel
1448 * @param msg The message header
1451 handle_peer_push (void *cls,
1452 struct GNUNET_CADET_Channel *channel,
1454 const struct GNUNET_MessageHeader *msg)
1456 const struct GNUNET_PeerIdentity *peer;
1458 // (check the proof of work)
1460 peer = (const struct GNUNET_PeerIdentity *)
1461 GNUNET_CADET_channel_get_info (channel, GNUNET_CADET_OPTION_PEER);
1462 // FIXME wait for cadet to change this function
1464 LOG (GNUNET_ERROR_TYPE_DEBUG, "PUSH received (%s)\n", GNUNET_i2s (peer));
1466 #ifdef ENABLE_MALICIOUS
1467 struct AttackedPeer *tmp_att_peer;
1469 tmp_att_peer = GNUNET_new (struct AttackedPeer);
1470 memcpy (&tmp_att_peer->peer_id, peer, sizeof (struct GNUNET_PeerIdentity));
1473 { /* Try to maximise representation */
1474 if (NULL == att_peer_set)
1475 att_peer_set = GNUNET_CONTAINER_multipeermap_create (1, GNUNET_NO);
1476 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (att_peer_set,
1479 GNUNET_CONTAINER_DLL_insert (att_peers_head,
1482 add_peer_array_to_set (peer, 1, att_peer_set);
1488 else if (2 == mal_type)
1489 { /* We attack one single well-known peer - simply ignore */
1494 GNUNET_free (tmp_att_peer);
1497 #endif /* ENABLE_MALICIOUS */
1499 /* Add the sending peer to the push_list */
1500 if (GNUNET_NO == in_arr (push_list, push_list_size, peer))
1501 GNUNET_array_append (push_list, push_list_size, *peer);
1503 GNUNET_CADET_receive_done (channel);
1509 * Iterator over hash map entries.
1510 * Called from #generate_view_array and writes every peer id into #view_array.
1512 * @param cls closure - the pointer to the counter
1513 * @param key current public key
1514 * @param value value in the hash map
1515 * @return #GNUNET_YES if we should continue to
1517 * #GNUNET_NO if not.
1520 dump_id_to_view_array (void *cls,
1521 const struct GNUNET_PeerIdentity *key,
1524 unsigned int *i = (unsigned int *) cls;
1526 view_array[(*i)++] = *key;
1532 * Makes sure the view_array is filled with the peer ids currently in #view.
1533 * Called from within #do_round before sending pushes and pulls and from
1534 * #handle_peer_pull_request when a reply is sent.
1537 generate_view_array (unsigned int view_size)
1542 if (NULL == view_array)
1544 view_array = GNUNET_new_array (view_size,
1545 struct GNUNET_PeerIdentity);
1546 i = GNUNET_new (unsigned int);
1549 ret = GNUNET_CONTAINER_multipeermap_iterate (view,
1550 dump_id_to_view_array,
1552 GNUNET_assert (view_size == ret);
1553 GNUNET_assert (view_size == *i);
1561 * Handle PULL REQUEST request message from another peer.
1563 * Reply with the view of PeerIDs.
1565 * @param cls Closure
1566 * @param channel The channel the PULL REQUEST was received over
1567 * @param channel_ctx The context associated with this channel
1568 * @param msg The message header
1571 handle_peer_pull_request (void *cls,
1572 struct GNUNET_CADET_Channel *channel,
1574 const struct GNUNET_MessageHeader *msg)
1576 struct GNUNET_PeerIdentity *peer;
1577 unsigned int view_size;
1579 peer = (struct GNUNET_PeerIdentity *)
1580 GNUNET_CADET_channel_get_info (channel,
1581 GNUNET_CADET_OPTION_PEER);
1582 // FIXME wait for cadet to change this function
1584 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REQUEST received (%s)\n", GNUNET_i2s (peer));
1586 #ifdef ENABLE_MALICIOUS
1589 { /* Try to maximise representation */
1590 send_pull_reply (peer, mal_peers, num_mal_peers);
1594 else if (2 == mal_type)
1595 { /* Try to partition network */
1596 if (0 == GNUNET_CRYPTO_cmp_peer_identity (&attacked_peer, peer))
1598 send_pull_reply (peer, mal_peers, num_mal_peers);
1602 #endif /* ENABLE_MALICIOUS */
1604 view_size = GNUNET_CONTAINER_multipeermap_size (view);
1605 generate_view_array (view_size);
1607 send_pull_reply (peer, view_array, view_size);
1609 GNUNET_CADET_receive_done (channel);
1615 * Handle PULL REPLY message from another peer.
1617 * Check whether we sent a corresponding request and
1618 * whether this reply is the first one.
1620 * @param cls Closure
1621 * @param channel The channel the PUSH was received over
1622 * @param channel_ctx The context associated with this channel
1623 * @param msg The message header
1626 handle_peer_pull_reply (void *cls,
1627 struct GNUNET_CADET_Channel *channel,
1629 const struct GNUNET_MessageHeader *msg)
1631 struct GNUNET_RPS_P2P_PullReplyMessage *in_msg;
1632 struct GNUNET_PeerIdentity *peers;
1633 struct PeerContext *peer_ctx;
1634 struct GNUNET_PeerIdentity *sender;
1635 struct PeerContext *sender_ctx;
1636 struct PeerOutstandingOp out_op;
1638 #ifdef ENABLE_MALICIOUS
1639 struct AttackedPeer *tmp_att_peer;
1640 #endif /* ENABLE_MALICIOUS */
1642 /* Check for protocol violation */
1643 if (sizeof (struct GNUNET_RPS_P2P_PullReplyMessage) > ntohs (msg->size))
1645 GNUNET_break_op (0);
1646 return GNUNET_SYSERR;
1649 in_msg = (struct GNUNET_RPS_P2P_PullReplyMessage *) msg;
1650 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1651 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1653 LOG (GNUNET_ERROR_TYPE_ERROR,
1654 "message says it sends %" PRIu32 " peers, have space for %i peers\n",
1655 ntohl (in_msg->num_peers),
1656 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_P2P_PullReplyMessage)) /
1657 sizeof (struct GNUNET_PeerIdentity));
1658 GNUNET_break_op (0);
1659 return GNUNET_SYSERR;
1662 sender = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
1663 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
1664 // Guess simply casting isn't the nicest way...
1665 // FIXME wait for cadet to change this function
1666 sender_ctx = get_peer_ctx (peer_map, sender);
1668 LOG (GNUNET_ERROR_TYPE_DEBUG, "PULL REPLY received (%s)\n", GNUNET_i2s (sender));
1670 if (GNUNET_YES != get_peer_flag (sender_ctx, PULL_REPLY_PENDING))
1672 LOG (GNUNET_ERROR_TYPE_WARNING,
1673 "Received a pull reply from a peer we didn't request one from!\n");
1674 GNUNET_break_op (0);
1679 #ifdef ENABLE_MALICIOUS
1680 // We shouldn't even receive pull replies as we're not sending
1683 #endif /* ENABLE_MALICIOUS */
1685 /* Do actual logic */
1686 peers = (struct GNUNET_PeerIdentity *) &in_msg[1];
1688 LOG (GNUNET_ERROR_TYPE_DEBUG,
1689 "PULL REPLY received, got following %u peers:\n",
1690 ntohl (in_msg->num_peers));
1692 for (i = 0 ; i < ntohl (in_msg->num_peers) ; i++)
1694 LOG (GNUNET_ERROR_TYPE_DEBUG,
1697 GNUNET_i2s (&peers[i]));
1699 #ifdef ENABLE_MALICIOUS
1702 { /* Add attacked peer to local list */
1703 // TODO check if we sent a request and this was the first reply
1704 if (GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (att_peer_set,
1706 && GNUNET_NO == GNUNET_CONTAINER_multipeermap_contains (mal_peer_set,
1708 && 0 != GNUNET_CRYPTO_cmp_peer_identity (&peers[i],
1711 tmp_att_peer = GNUNET_new (struct AttackedPeer);
1712 tmp_att_peer->peer_id = peers[i];
1713 GNUNET_CONTAINER_DLL_insert (att_peers_head,
1716 add_peer_array_to_set (&peers[i], 1, att_peer_set);
1720 #endif /* ENABLE_MALICIOUS */
1721 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity,
1724 peer_ctx = get_peer_ctx (peer_map, &peers[i]);
1725 if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
1727 if (GNUNET_NO == in_arr (pull_list, pull_list_size, &peers[i]))
1728 GNUNET_array_append (pull_list, pull_list_size, peers[i]);
1730 else if (GNUNET_NO == insert_in_pull_list_scheduled (peer_ctx))
1732 out_op.op = insert_in_pull_list;
1733 out_op.op_cls = NULL;
1734 GNUNET_array_append (peer_ctx->outstanding_ops,
1735 peer_ctx->num_outstanding_ops,
1737 check_peer_live (peer_ctx);
1742 unset_peer_flag (sender_ctx, PULL_REPLY_PENDING);
1744 GNUNET_CADET_receive_done (channel);
1750 * Compute a random delay.
1751 * A uniformly distributed value between mean + spread and mean - spread.
1753 * For example for mean 4 min and spread 2 the minimum is (4 min - (1/2 * 4 min))
1754 * It would return a random value between 2 and 6 min.
1756 * @param mean the mean
1757 * @param spread the inverse amount of deviation from the mean
1759 static struct GNUNET_TIME_Relative
1760 compute_rand_delay (struct GNUNET_TIME_Relative mean, unsigned int spread)
1762 struct GNUNET_TIME_Relative half_interval;
1763 struct GNUNET_TIME_Relative ret;
1764 unsigned int rand_delay;
1765 unsigned int max_rand_delay;
1769 LOG (GNUNET_ERROR_TYPE_WARNING,
1770 "Not accepting spread of 0\n");
1774 /* Compute random time value between spread * mean and spread * mean */
1775 half_interval = GNUNET_TIME_relative_divide (mean, spread);
1777 max_rand_delay = GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us / mean.rel_value_us * (2/spread);
1779 * Compute random value between (0 and 1) * round_interval
1780 * via multiplying round_interval with a 'fraction' (0 to value)/value
1782 rand_delay = GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_WEAK, max_rand_delay);
1783 ret = GNUNET_TIME_relative_multiply (mean, rand_delay);
1784 ret = GNUNET_TIME_relative_divide (ret, max_rand_delay);
1785 ret = GNUNET_TIME_relative_add (ret, half_interval);
1787 if (GNUNET_TIME_UNIT_FOREVER_REL.rel_value_us == ret.rel_value_us)
1788 LOG (GNUNET_ERROR_TYPE_WARNING,
1789 "Returning FOREVER_REL\n");
1796 * Send single pull request
1798 * @param peer_id the peer to send the pull request to.
1801 send_pull_request (struct GNUNET_PeerIdentity *peer_id)
1803 struct GNUNET_MQ_Envelope *ev;
1804 struct GNUNET_MQ_Handle *mq;
1805 struct PeerContext *peer_ctx;
1807 peer_ctx = get_peer_ctx (peer_map, peer_id);
1808 GNUNET_assert (GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING));
1809 set_peer_flag (peer_ctx, PULL_REPLY_PENDING);
1811 LOG (GNUNET_ERROR_TYPE_DEBUG,
1812 "Sending PULL request to peer %s of view.\n",
1813 GNUNET_i2s (peer_id));
1815 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST);
1816 mq = get_mq (peer_map, peer_id);
1817 GNUNET_MQ_send (mq, ev);
1824 * @param peer_id the peer to send the push to.
1827 send_push (struct GNUNET_PeerIdentity *peer_id)
1829 struct GNUNET_MQ_Envelope *ev;
1830 struct GNUNET_MQ_Handle *mq;
1832 LOG (GNUNET_ERROR_TYPE_DEBUG,
1833 "Sending PUSH to peer %s of view.\n",
1834 GNUNET_i2s (peer_id));
1836 ev = GNUNET_MQ_msg_header (GNUNET_MESSAGE_TYPE_RPS_PP_PUSH);
1837 mq = get_mq (peer_map, peer_id);
1838 GNUNET_MQ_send (mq, ev);
1843 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1846 do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
1849 #ifdef ENABLE_MALICIOUS
1851 * Turn RPS service to act malicious.
1853 * @param cls Closure
1854 * @param client The client that sent the message
1855 * @param msg The message header
1858 handle_client_act_malicious (void *cls,
1859 struct GNUNET_SERVER_Client *client,
1860 const struct GNUNET_MessageHeader *msg)
1862 struct GNUNET_RPS_CS_ActMaliciousMessage *in_msg;
1863 struct GNUNET_PeerIdentity *peers;
1864 uint32_t num_mal_peers_sent;
1865 uint32_t num_mal_peers_old;
1867 /* Check for protocol violation */
1868 if (sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage) > ntohs (msg->size))
1870 GNUNET_break_op (0);
1873 in_msg = (struct GNUNET_RPS_CS_ActMaliciousMessage *) msg;
1874 if ((ntohs (msg->size) - sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage)) /
1875 sizeof (struct GNUNET_PeerIdentity) != ntohl (in_msg->num_peers))
1877 LOG (GNUNET_ERROR_TYPE_ERROR,
1878 "message says it sends %" PRIu64 " peers, have space for %i peers\n",
1879 ntohl (in_msg->num_peers),
1880 (ntohs (msg->size) - sizeof (struct GNUNET_RPS_CS_ActMaliciousMessage)) /
1881 sizeof (struct GNUNET_PeerIdentity));
1882 GNUNET_break_op (0);
1886 /* Do actual logic */
1887 peers = (struct GNUNET_PeerIdentity *) &msg[1];
1888 mal_type = ntohl (in_msg->type);
1890 LOG (GNUNET_ERROR_TYPE_DEBUG,
1891 "Now acting malicious type %" PRIu32 ", got %" PRIu32 " peers.\n",
1893 ntohl (in_msg->num_peers));
1896 { /* Try to maximise representation */
1897 /* Add other malicious peers to those we already know */
1899 num_mal_peers_sent = ntohl (in_msg->num_peers);
1900 num_mal_peers_old = num_mal_peers;
1901 GNUNET_array_grow (mal_peers,
1903 num_mal_peers + num_mal_peers_sent);
1904 memcpy (&mal_peers[num_mal_peers_old],
1906 num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
1908 /* Add all mal peers to mal_peer_set */
1909 add_peer_array_to_set (&mal_peers[num_mal_peers_old],
1913 /* Substitute do_round () with do_mal_round () */
1914 GNUNET_SCHEDULER_cancel (do_round_task);
1915 do_round_task = GNUNET_SCHEDULER_add_now (&do_mal_round, NULL);
1918 else if (2 == mal_type
1920 { /* Try to partition the network */
1921 /* Add other malicious peers to those we already know */
1922 num_mal_peers_sent = ntohl (in_msg->num_peers) - 1;
1923 num_mal_peers_old = num_mal_peers;
1924 GNUNET_array_grow (mal_peers,
1926 num_mal_peers + num_mal_peers_sent);
1927 if (NULL != mal_peers &&
1930 memcpy (&mal_peers[num_mal_peers_old],
1932 num_mal_peers_sent * sizeof (struct GNUNET_PeerIdentity));
1934 /* Add all mal peers to mal_peer_set */
1935 add_peer_array_to_set (&mal_peers[num_mal_peers_old],
1940 /* Store the one attacked peer */
1941 memcpy (&attacked_peer,
1942 &in_msg->attacked_peer,
1943 sizeof (struct GNUNET_PeerIdentity));
1945 LOG (GNUNET_ERROR_TYPE_DEBUG,
1946 "Attacked peer is %s\n",
1947 GNUNET_i2s (&attacked_peer));
1949 /* Substitute do_round () with do_mal_round () */
1950 GNUNET_SCHEDULER_cancel (do_round_task);
1951 do_round_task = GNUNET_SCHEDULER_add_now (&do_mal_round, NULL);
1953 else if (0 == mal_type)
1954 { /* Stop acting malicious */
1955 GNUNET_array_grow (mal_peers, num_mal_peers, 0);
1957 /* Substitute do_mal_round () with do_round () */
1958 GNUNET_SCHEDULER_cancel (do_round_task);
1959 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
1966 GNUNET_SERVER_receive_done (client, GNUNET_OK);
1971 * Send out PUSHes and PULLs maliciously.
1973 * This is executed regylary.
1976 do_mal_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1978 uint32_t num_pushes;
1980 struct GNUNET_TIME_Relative time_next_round;
1981 struct AttackedPeer *tmp_att_peer;
1982 struct PeerContext *peer_ctx;
1984 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round maliciously type %" PRIu32 ".\n",
1987 /* Do malicious actions */
1989 { /* Try to maximise representation */
1991 /* The maximum of pushes we're going to send this round */
1992 num_pushes = GNUNET_MIN (GNUNET_MIN (push_limit,
1993 num_attacked_peers),
1994 GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE);
1996 LOG (GNUNET_ERROR_TYPE_DEBUG,
1997 "Going to send %" PRIu32 " pushes\n",
2000 /* Send PUSHes to attacked peers */
2001 for (i = 0 ; i < num_pushes ; i++)
2003 if (att_peers_tail == att_peer_index)
2004 att_peer_index = att_peers_head;
2006 att_peer_index = att_peer_index->next;
2008 send_push (&att_peer_index->peer_id);
2011 /* Send PULLs to some peers to learn about additional peers to attack */
2012 tmp_att_peer = att_peer_index;
2013 for (i = 0 ; i < num_pushes * alpha ; i++)
2015 if (att_peers_tail == tmp_att_peer)
2016 tmp_att_peer = att_peers_head;
2018 att_peer_index = tmp_att_peer->next;
2020 send_pull_request (&tmp_att_peer->peer_id);
2025 else if (2 == mal_type)
2027 * Try to partition the network
2028 * Send as many pushes to the attacked peer as possible
2029 * That is one push per round as it will ignore more.
2031 send_push (&attacked_peer);
2036 { /* Combined attack */
2038 /* Send PUSH to attacked peers */
2039 peer_ctx = get_peer_ctx (peer_map, &attacked_peer);
2040 if (GNUNET_YES == get_peer_flag (peer_ctx, VALID))
2042 LOG (GNUNET_ERROR_TYPE_DEBUG,
2043 "Goding to send push to attacked peer (%s)\n",
2044 GNUNET_i2s (&attacked_peer));
2045 send_push (&attacked_peer);
2048 check_peer_live (peer_ctx);
2050 /* The maximum of pushes we're going to send this round */
2051 num_pushes = GNUNET_MIN (GNUNET_MIN (push_limit - 1,
2052 num_attacked_peers),
2053 GNUNET_CONSTANTS_MAX_CADET_MESSAGE_SIZE);
2055 LOG (GNUNET_ERROR_TYPE_DEBUG,
2056 "Going to send %" PRIu32 " pushes\n",
2059 for (i = 0 ; i < num_pushes ; i++)
2061 if (att_peers_tail == att_peer_index)
2062 att_peer_index = att_peers_head;
2064 att_peer_index = att_peer_index->next;
2066 send_push (&att_peer_index->peer_id);
2069 /* Send PULLs to some peers to learn about additional peers to attack */
2070 tmp_att_peer = att_peer_index;
2071 for (i = 0 ; i < num_pushes * alpha ; i++)
2073 if (att_peers_tail == tmp_att_peer)
2074 tmp_att_peer = att_peers_head;
2076 att_peer_index = tmp_att_peer->next;
2078 send_pull_request (&tmp_att_peer->peer_id);
2082 /* Schedule next round */
2083 time_next_round = compute_rand_delay (round_interval, 2);
2085 //do_round_task = GNUNET_SCHEDULER_add_delayed (round_interval, &do_mal_round, NULL);
2086 do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &do_mal_round, NULL);
2087 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
2089 #endif /* ENABLE_MALICIOUS */
2093 * Send out PUSHes and PULLs, possibly update #view, samplers.
2095 * This is executed regylary.
2098 do_round (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2100 LOG (GNUNET_ERROR_TYPE_DEBUG, "Going to execute next round.\n");
2103 unsigned int view_size;
2104 unsigned int *permut;
2105 unsigned int a_peers; /* Number of peers we send pushes to */
2106 unsigned int b_peers; /* Number of peers we send pull requests to */
2107 uint32_t first_border;
2108 uint32_t second_border;
2109 struct GNUNET_PeerIdentity peer;
2110 struct PeerContext *peer_ctx;
2112 LOG (GNUNET_ERROR_TYPE_DEBUG,
2113 "Printing view:\n");
2114 to_file (file_name_view_log,
2115 "___ new round ___");
2116 view_size = GNUNET_CONTAINER_multipeermap_size (view);
2117 generate_view_array (view_size);
2118 for (i = 0 ; i < view_size ; i++)
2120 LOG (GNUNET_ERROR_TYPE_DEBUG,
2121 "\t%s\n", GNUNET_i2s (&view_array[i]));
2122 to_file (file_name_view_log,
2124 GNUNET_i2s_full (&view_array[i]));
2128 /* Send pushes and pull requests */
2131 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
2132 (unsigned int) view_size);
2135 a_peers = ceil (alpha * view_size);
2137 LOG (GNUNET_ERROR_TYPE_DEBUG,
2138 "Going to send pushes to %u (ceil (%f * %u)) peers.\n",
2139 a_peers, alpha, view_size);
2140 for (i = 0; i < a_peers; i++)
2142 peer = view_array[permut[i]];
2143 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer)) // TODO
2144 { // FIXME if this fails schedule/loop this for later
2149 /* Send PULL requests */
2150 b_peers = ceil (beta * view_size);
2151 first_border = a_peers;
2152 second_border = a_peers + b_peers;
2153 if (second_border > view_size)
2155 first_border = view_size - b_peers;
2156 second_border = view_size;
2158 LOG (GNUNET_ERROR_TYPE_DEBUG,
2159 "Going to send pulls to %u (ceil (%f * %u)) peers.\n",
2160 b_peers, beta, view_size);
2161 for (i = first_border; i < second_border; i++)
2163 peer = view_array[permut[i]];
2164 peer_ctx = get_peer_ctx (peer_map, &peer);
2165 if (0 != GNUNET_CRYPTO_cmp_peer_identity (&own_identity, &peer) &&
2166 GNUNET_NO == get_peer_flag (peer_ctx, PULL_REPLY_PENDING)) // TODO
2167 { // FIXME if this fails schedule/loop this for later
2168 send_pull_request (&peer);
2172 GNUNET_free (permut);
2178 /* TODO see how many peers are in push-/pull- list! */
2180 if (push_list_size <= alpha * view_size &&
2181 0 < push_list_size &&
2184 LOG (GNUNET_ERROR_TYPE_DEBUG, "Update of the view.\n");
2186 uint32_t final_size;
2187 uint32_t peers_to_clean_size;
2188 struct GNUNET_PeerIdentity *peers_to_clean;
2190 peers_to_clean = NULL;
2191 peers_to_clean_size = 0;
2192 GNUNET_array_grow (peers_to_clean, peers_to_clean_size, view_size);
2193 memcpy (peers_to_clean,
2195 view_size * sizeof (struct GNUNET_PeerIdentity));
2197 /* Seems like recreating is the easiest way of emptying the peermap */
2198 GNUNET_CONTAINER_multipeermap_destroy (view);
2199 view = GNUNET_CONTAINER_multipeermap_create (view_size, GNUNET_NO);
2200 to_file (file_name_view_log,
2203 first_border = GNUNET_MIN (ceil (alpha * sampler_size_est_need),
2205 second_border = first_border +
2206 GNUNET_MIN (floor (beta * sampler_size_est_need),
2208 final_size = second_border +
2209 ceil ((1 - (alpha + beta)) * sampler_size_est_need);
2211 GNUNET_array_grow (view_array, view_size, second_border);
2213 /* Update view with peers received through PUSHes */
2214 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
2216 for (i = 0; i < first_border; i++)
2218 view_array[i] = push_list[permut[i]];
2219 GNUNET_CONTAINER_multipeermap_put (view, &push_list[permut[i]], NULL,
2220 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2222 to_file (file_name_view_log,
2224 GNUNET_i2s_full (&view_array[i]));
2225 // TODO change the peer_flags accordingly
2227 GNUNET_free (permut);
2230 /* Update view with peers received through PULLs */
2231 permut = GNUNET_CRYPTO_random_permute (GNUNET_CRYPTO_QUALITY_STRONG,
2233 for (i = first_border; i < second_border; i++)
2235 view_array[i] = pull_list[permut[i - first_border]];
2236 GNUNET_CONTAINER_multipeermap_put (view,
2237 &pull_list[permut[i - first_border]],
2239 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
2241 to_file (file_name_view_log,
2243 GNUNET_i2s_full (&view_array[i]));
2244 // TODO change the peer_flags accordingly
2246 GNUNET_free (permut);
2249 /* Update view with peers from history */
2250 RPS_sampler_get_n_rand_peers (prot_sampler,
2253 final_size - second_border);
2254 num_hist_update_tasks = final_size - second_border;
2255 // TODO change the peer_flags accordingly
2257 for (i = 0; i < view_size; i++)
2258 rem_from_list (&peers_to_clean, &peers_to_clean_size, &view_array[i]);
2260 /* Clean peers that were removed from the view */
2261 for (i = 0; i < peers_to_clean_size; i++)
2263 peer_clean (&peers_to_clean[i]);
2264 to_file (file_name_view_log,
2266 GNUNET_i2s_full (&peers_to_clean[i]));
2269 GNUNET_free (peers_to_clean);
2270 peers_to_clean = NULL;
2274 LOG (GNUNET_ERROR_TYPE_DEBUG, "No update of the view.\n");
2276 // TODO independent of that also get some peers from CADET_get_peers()?
2278 LOG (GNUNET_ERROR_TYPE_DEBUG,
2279 "Received %u pushes and %u pulls last round (alpha (%.2f) * view_size (%u) = %.2f)\n",
2286 /* Update samplers */
2287 for (i = 0; i < push_list_size; i++)
2289 LOG (GNUNET_ERROR_TYPE_DEBUG,
2290 "Updating with peer %s from push list\n",
2291 GNUNET_i2s (&push_list[i]));
2292 RPS_sampler_update (prot_sampler, &push_list[i]);
2293 RPS_sampler_update (client_sampler, &push_list[i]);
2294 // TODO set in_flag?
2297 for (i = 0; i < pull_list_size; i++)
2299 LOG (GNUNET_ERROR_TYPE_DEBUG,
2300 "Updating with peer %s from pull list\n",
2301 GNUNET_i2s (&pull_list[i]));
2302 RPS_sampler_update (prot_sampler, &pull_list[i]);
2303 RPS_sampler_update (client_sampler, &pull_list[i]);
2304 // TODO set in_flag?
2308 /* Empty push/pull lists */
2309 GNUNET_array_grow (push_list, push_list_size, 0);
2310 GNUNET_array_grow (pull_list, pull_list_size, 0);
2312 struct GNUNET_TIME_Relative time_next_round;
2314 time_next_round = compute_rand_delay (round_interval, 2);
2316 /* Schedule next round */
2317 do_round_task = GNUNET_SCHEDULER_add_delayed (time_next_round, &do_round, NULL);
2318 LOG (GNUNET_ERROR_TYPE_DEBUG, "Finished round\n");
2323 rps_start (struct GNUNET_SERVER_Handle *server);
2327 * This is called from GNUNET_CADET_get_peers().
2329 * It is called on every peer(ID) that cadet somehow has contact with.
2330 * We use those to initialise the sampler.
2333 init_peer_cb (void *cls,
2334 const struct GNUNET_PeerIdentity *peer,
2335 int tunnel, // "Do we have a tunnel towards this peer?"
2336 unsigned int n_paths, // "Number of known paths towards this peer"
2337 unsigned int best_path) // "How long is the best path?
2338 // (0 = unknown, 1 = ourselves, 2 = neighbor)"
2342 LOG (GNUNET_ERROR_TYPE_DEBUG,
2343 "Got peer_id %s from cadet\n",
2351 * Iterator over peers from peerinfo.
2353 * @param cls closure
2354 * @param peer id of the peer, NULL for last call
2355 * @param hello hello message for the peer (can be NULL)
2356 * @param error message
2359 process_peerinfo_peers (void *cls,
2360 const struct GNUNET_PeerIdentity *peer,
2361 const struct GNUNET_HELLO_Message *hello,
2362 const char *err_msg)
2366 LOG (GNUNET_ERROR_TYPE_DEBUG,
2367 "Got peer_id %s from peerinfo\n",
2375 * Callback used to remove peers from the multipeermap.
2378 peer_remove_cb (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
2380 struct PeerContext *peer_ctx;
2381 const struct GNUNET_CADET_Channel *channel =
2382 (const struct GNUNET_CADET_Channel *) cls;
2384 peer_ctx = (struct PeerContext *) value;
2385 set_peer_flag (peer_ctx, TO_DESTROY);
2387 LOG (GNUNET_ERROR_TYPE_DEBUG,
2388 "Going to clean peer %s\n",
2389 GNUNET_i2s (&peer_ctx->peer_id));
2391 /* If operations are still scheduled for this peer cancel those */
2392 if (0 != peer_ctx->num_outstanding_ops)
2394 GNUNET_array_grow (peer_ctx->outstanding_ops,
2395 peer_ctx->num_outstanding_ops,
2399 /* If we are still waiting for notification whether this peer is live
2400 * cancel the according task */
2401 if (NULL != peer_ctx->is_live_task)
2403 LOG (GNUNET_ERROR_TYPE_DEBUG,
2404 "Trying to cancle is_live_task for peer %s\n",
2406 GNUNET_CADET_notify_transmit_ready_cancel (peer_ctx->is_live_task);
2407 peer_ctx->is_live_task = NULL;
2410 unset_peer_flag (peer_ctx, PULL_REPLY_PENDING);
2412 to_file (file_name_view_log,
2413 "-%s\t(cleanup channel, other peer)",
2414 GNUNET_i2s_full (key));
2415 GNUNET_CONTAINER_multipeermap_remove_all (view, key);
2417 /* If there is still a mq destroy it */
2418 if (NULL != peer_ctx->mq)
2420 GNUNET_MQ_destroy (peer_ctx->mq);
2421 peer_ctx->mq = NULL;
2425 /* Remove the send_channel
2426 * This function should be called again from #cleanup_channel (callback
2427 * called on the destruction of channels) and clean up the rest. */
2428 if (NULL != peer_ctx->send_channel &&
2429 channel != peer_ctx->send_channel)
2431 GNUNET_CADET_channel_destroy (peer_ctx->send_channel);
2432 peer_ctx->send_channel = NULL;
2435 /* Remove the recv_channel
2436 * This function should be called again from #cleanup_channel (callback
2437 * called on the destruction of channels) and clean up the rest. */
2438 if (NULL != peer_ctx->recv_channel &&
2439 channel != peer_ctx->recv_channel)
2441 GNUNET_CADET_channel_destroy (peer_ctx->recv_channel);
2442 peer_ctx->recv_channel = NULL;
2445 /* If there is no channel we have to remove the context now */
2446 if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_remove_all (peer_map, key))
2447 LOG (GNUNET_ERROR_TYPE_WARNING, "removing peer from peer_map failed\n");
2449 GNUNET_free (peer_ctx);
2456 * Clean the send channel of a peer
2457 * If there is also no channel to receive messages from that peer, remove it
2461 peer_clean (const struct GNUNET_PeerIdentity *peer)
2463 struct PeerContext *peer_ctx;
2464 /* struct GNUNET_CADET_Channel *channel; */
2466 if (GNUNET_YES != GNUNET_CONTAINER_multipeermap_contains (view, peer) &&
2467 GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
2469 peer_ctx = get_peer_ctx (peer_map, peer);
2471 if (NULL == peer_ctx->recv_channel)
2473 peer_remove_cb (NULL, peer, peer_ctx);
2480 * Task run during shutdown.
2486 shutdown_task (void *cls,
2487 const struct GNUNET_SCHEDULER_TaskContext *tc)
2490 LOG (GNUNET_ERROR_TYPE_DEBUG, "RPS is going down\n");
2492 GNUNET_PEERINFO_notify_cancel (peerinfo_notify_handle);
2493 GNUNET_PEERINFO_disconnect (peerinfo_handle);
2495 if (NULL != do_round_task)
2497 GNUNET_SCHEDULER_cancel (do_round_task);
2498 do_round_task = NULL;
2502 if (GNUNET_SYSERR ==
2503 GNUNET_CONTAINER_multipeermap_iterate (peer_map, peer_remove_cb, NULL))
2504 LOG (GNUNET_ERROR_TYPE_WARNING,
2505 "Iterating over peers to disconnect from them was cancelled\n");
2508 GNUNET_NSE_disconnect (nse);
2509 RPS_sampler_destroy (prot_sampler);
2510 RPS_sampler_destroy (client_sampler);
2511 LOG (GNUNET_ERROR_TYPE_DEBUG,
2512 "Size of the peermap: %u\n",
2513 GNUNET_CONTAINER_multipeermap_size (peer_map));
2514 GNUNET_break (0 == GNUNET_CONTAINER_multipeermap_size (peer_map));
2515 GNUNET_CADET_disconnect (cadet_handle);
2516 GNUNET_CONTAINER_multipeermap_destroy (peer_map);
2517 GNUNET_CONTAINER_multipeermap_destroy (view);
2519 GNUNET_array_grow (push_list, push_list_size, 0);
2520 GNUNET_array_grow (pull_list, pull_list_size, 0);
2521 #ifdef ENABLE_MALICIOUS
2522 struct AttackedPeer *tmp_att_peer;
2523 GNUNET_array_grow (mal_peers, num_mal_peers, 0);
2524 if (NULL != mal_peer_set)
2525 GNUNET_CONTAINER_multipeermap_destroy (mal_peer_set);
2526 if (NULL != att_peer_set)
2527 GNUNET_CONTAINER_multipeermap_destroy (att_peer_set);
2528 while (NULL != att_peers_head)
2530 tmp_att_peer = att_peers_head;
2531 GNUNET_CONTAINER_DLL_remove (att_peers_head, att_peers_tail, tmp_att_peer);
2533 #endif /* ENABLE_MALICIOUS */
2538 * A client disconnected. Remove all of its data structure entries.
2540 * @param cls closure, NULL
2541 * @param client identification of the client
2544 handle_client_disconnect (void *cls,
2545 struct GNUNET_SERVER_Client * client)
2551 * Handle the channel a peer opens to us.
2553 * @param cls The closure
2554 * @param channel The channel the peer wants to establish
2555 * @param initiator The peer's peer ID
2556 * @param port The port the channel is being established over
2557 * @param options Further options
2560 handle_inbound_channel (void *cls,
2561 struct GNUNET_CADET_Channel *channel,
2562 const struct GNUNET_PeerIdentity *initiator,
2564 enum GNUNET_CADET_ChannelOption options)
2566 struct PeerContext *peer_ctx;
2567 struct GNUNET_PeerIdentity peer;
2570 LOG (GNUNET_ERROR_TYPE_DEBUG,
2571 "New channel was established to us (Peer %s).\n",
2572 GNUNET_i2s (&peer));
2574 GNUNET_assert (NULL != channel);
2576 // we might not even store the recv_channel
2578 peer_ctx = get_peer_ctx (peer_map, &peer);
2579 // FIXME what do we do if a channel is established twice?
2580 // overwrite? Clean old channel? ...?
2581 //if (NULL != peer_ctx->recv_channel)
2583 // peer_ctx->recv_channel = channel;
2585 peer_ctx->recv_channel = channel;
2587 (void) GNUNET_CONTAINER_multipeermap_put (peer_map, &peer, peer_ctx,
2588 GNUNET_CONTAINER_MULTIHASHMAPOPTION_REPLACE);
2590 /* This would make the push-message unnecessary */
2591 LOG (GNUNET_ERROR_TYPE_DEBUG,
2592 "Got peer_id %s from peerinfo\n",
2593 GNUNET_i2s (&peer));
2594 new_peer_id (&peer);
2596 peer_is_live (peer_ctx);
2598 return NULL; // TODO
2603 * This is called when a channel is destroyed.
2605 * @param cls The closure
2606 * @param channel The channel being closed
2607 * @param channel_ctx The context associated with this channel
2610 cleanup_channel (void *cls,
2611 const struct GNUNET_CADET_Channel *channel,
2614 struct GNUNET_PeerIdentity *peer;
2615 struct PeerContext *peer_ctx;
2617 peer = (struct GNUNET_PeerIdentity *) GNUNET_CADET_channel_get_info (
2618 (struct GNUNET_CADET_Channel *) channel, GNUNET_CADET_OPTION_PEER);
2619 // Guess simply casting isn't the nicest way...
2620 // FIXME wait for cadet to change this function
2622 if (GNUNET_YES == GNUNET_CONTAINER_multipeermap_contains (peer_map, peer))
2623 {/* We don't want to implicitly create a context that we're about to kill */
2624 peer_ctx = GNUNET_CONTAINER_multipeermap_get (peer_map, peer);
2625 if (NULL == peer_ctx) /* It could have been removed by shutdown_task */
2628 if (get_peer_flag (peer_ctx, TO_DESTROY))
2629 {/* We initiatad the destruction of this particular peer */
2630 if (channel == peer_ctx->send_channel)
2631 peer_ctx->send_channel = NULL;
2632 else if (channel == peer_ctx->recv_channel)
2633 peer_ctx->recv_channel = NULL;
2635 to_file (file_name_view_log,
2636 "-%s\t(cleanup channel, ourself)",
2637 GNUNET_i2s_full (peer));
2641 { /* We did not initiate the destruction of this peer */
2642 if (channel == peer_ctx->send_channel)
2643 { /* Something (but us) killd the channel - clean up peer */
2644 LOG (GNUNET_ERROR_TYPE_DEBUG,
2645 "send channel (%s) was destroyed - cleaning up\n",
2647 peer_ctx->send_channel = NULL;
2648 /* Somwewhat {ab,re}use the iterator function */
2649 /* Cast to void is ok, because it's used as void in peer_remove_cb */
2650 (void) peer_remove_cb ((void *) channel, peer, peer_ctx);
2652 else if (channel == peer_ctx->recv_channel)
2653 { /* Other peer doesn't want to send us messages anymore */
2654 LOG (GNUNET_ERROR_TYPE_DEBUG,
2655 "Peer %s destroyed recv channel - cleaning up channel\n",
2657 peer_ctx->recv_channel = NULL;
2661 LOG (GNUNET_ERROR_TYPE_WARNING,
2662 "unknown channel (%s) was destroyed\n",
2669 { /* We don't know a context to that peer */
2670 LOG (GNUNET_ERROR_TYPE_DEBUG,
2671 "channel (%s) without associated context was destroyed\n",
2678 * Actually start the service.
2681 rps_start (struct GNUNET_SERVER_Handle *server)
2683 static const struct GNUNET_SERVER_MessageHandler handlers[] = {
2684 {&handle_client_request, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_REQUEST,
2685 sizeof (struct GNUNET_RPS_CS_RequestMessage)},
2686 {&handle_client_seed, NULL, GNUNET_MESSAGE_TYPE_RPS_CS_SEED, 0},
2687 #ifdef ENABLE_MALICIOUS
2688 {&handle_client_act_malicious, NULL, GNUNET_MESSAGE_TYPE_RPS_ACT_MALICIOUS , 0},
2689 #endif /* ENABLE_MALICIOUS */
2693 GNUNET_SERVER_add_handlers (server, handlers);
2694 GNUNET_SERVER_disconnect_notify (server,
2695 &handle_client_disconnect,
2697 LOG (GNUNET_ERROR_TYPE_INFO, "Ready to receive requests from clients\n");
2700 do_round_task = GNUNET_SCHEDULER_add_now (&do_round, NULL);
2701 LOG (GNUNET_ERROR_TYPE_DEBUG, "Scheduled first round\n");
2703 GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_FOREVER_REL,
2710 * Process statistics requests.
2712 * @param cls closure
2713 * @param server the initialized server
2714 * @param c configuration to use
2718 struct GNUNET_SERVER_Handle *server,
2719 const struct GNUNET_CONFIGURATION_Handle *c)
2724 // TODO check what this does -- copied from gnunet-boss
2725 // - seems to work as expected
2726 GNUNET_log_setup ("rps", GNUNET_error_type_to_string (GNUNET_ERROR_TYPE_DEBUG), NULL);
2731 GNUNET_CRYPTO_get_peer_identity (cfg, &own_identity); // TODO check return value
2732 GNUNET_log (GNUNET_ERROR_TYPE_INFO,
2733 "STARTING SERVICE (rps) for peer [%s]\n",
2734 GNUNET_i2s (&own_identity));
2735 #ifdef ENABLE_MALICIOUS
2736 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2737 "Malicious execution compiled in.\n");
2738 #endif /* ENABLE_MALICIOUS */
2742 /* Get time interval from the configuration */
2743 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_time (cfg, "RPS",
2747 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
2748 "RPS", "ROUNDINTERVAL");
2749 GNUNET_SCHEDULER_shutdown ();
2753 /* Get initial size of sampler/view from the configuration */
2755 GNUNET_CONFIGURATION_get_value_number (cfg, "RPS", "INITSIZE",
2756 (long long unsigned int *) &sampler_size_est_need))
2758 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
2760 GNUNET_SCHEDULER_shutdown ();
2763 LOG (GNUNET_ERROR_TYPE_DEBUG, "INITSIZE is %" PRIu64 "\n", sampler_size_est_need);
2766 view = GNUNET_CONTAINER_multipeermap_create (4, GNUNET_NO);
2768 /* file_name_view_log */
2769 if (GNUNET_OK != GNUNET_DISK_directory_create ("/tmp/rps/"))
2771 LOG (GNUNET_ERROR_TYPE_WARNING,
2772 "Failed to create directory /tmp/rps/\n");
2775 size = (14 + strlen (GNUNET_i2s_full (&own_identity)) + 1) * sizeof (char);
2776 file_name_view_log = GNUNET_malloc (size);
2777 out_size = GNUNET_snprintf (file_name_view_log,
2780 GNUNET_i2s_full (&own_identity));
2781 if (size < out_size ||
2784 LOG (GNUNET_ERROR_TYPE_WARNING,
2785 "Failed to write string to buffer (size: %i, out_size: %i)\n",
2791 /* connect to NSE */
2792 nse = GNUNET_NSE_connect (cfg, nse_callback, NULL);
2798 peer_map = GNUNET_CONTAINER_multipeermap_create (sampler_size_est_need, GNUNET_NO);
2801 /* Initialise cadet */
2802 static const struct GNUNET_CADET_MessageHandler cadet_handlers[] = {
2803 {&handle_peer_push , GNUNET_MESSAGE_TYPE_RPS_PP_PUSH ,
2804 sizeof (struct GNUNET_MessageHeader)},
2805 {&handle_peer_pull_request, GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REQUEST,
2806 sizeof (struct GNUNET_MessageHeader)},
2807 {&handle_peer_pull_reply , GNUNET_MESSAGE_TYPE_RPS_PP_PULL_REPLY , 0},
2811 const uint32_t ports[] = {GNUNET_RPS_CADET_PORT, 0}; // _PORT specified in src/rps/rps.h
2812 cadet_handle = GNUNET_CADET_connect (cfg,
2814 &handle_inbound_channel,
2819 peerinfo_handle = GNUNET_PEERINFO_connect (cfg);
2821 /* Initialise sampler */
2822 struct GNUNET_TIME_Relative half_round_interval;
2823 struct GNUNET_TIME_Relative max_round_interval;
2825 half_round_interval = GNUNET_TIME_relative_multiply (round_interval, .5);
2826 max_round_interval = GNUNET_TIME_relative_add (round_interval, half_round_interval);
2828 prot_sampler = RPS_sampler_init (sampler_size_est_need, max_round_interval);
2829 client_sampler = RPS_sampler_mod_init (sampler_size_est_need, max_round_interval);
2831 /* Initialise push and pull maps */
2838 num_hist_update_tasks = 0;
2841 LOG (GNUNET_ERROR_TYPE_DEBUG, "Requesting peers from CADET\n");
2842 GNUNET_CADET_get_peers (cadet_handle, &init_peer_cb, NULL);
2843 // TODO send push/pull to each of those peers?
2845 peerinfo_notify_handle = GNUNET_PEERINFO_notify (cfg,
2847 process_peerinfo_peers,
2855 * The main function for the rps service.
2857 * @param argc number of arguments from the command line
2858 * @param argv command line arguments
2859 * @return 0 ok, 1 on error
2862 main (int argc, char *const *argv)
2864 return (GNUNET_OK ==
2865 GNUNET_SERVICE_run (argc,
2868 GNUNET_SERVICE_OPTION_NONE,
2869 &run, NULL)) ? 0 : 1;
2872 /* end of gnunet-service-rps.c */