GNUnet  0.11.x
gnunet-service-transport.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2010-2016 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
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  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
25 #include "platform.h"
26 #include "gnunet_util_lib.h"
27 #include "gnunet_hello_lib.h"
31 #include "gnunet_ats_service.h"
39 #include "transport.h"
40 
44 #define TRANSPORT_BLACKLIST_HT_SIZE 64
45 
58 #define MAX_PENDING (128 * 1024)
59 
60 
65 {
70 
75 
80 
85 
90 };
91 
92 
97 {
101  CT_NONE = 0,
102 
106  CT_CORE = 1,
107 
112 
117 
122 };
123 
124 
128 struct GST_BlacklistCheck;
129 
133 struct TransportClient
134 {
138  struct TransportClient *next;
139 
143  struct TransportClient *prev;
144 
148  struct GNUNET_SERVICE_Client *client;
149 
153  struct GNUNET_MQ_Handle *mq;
154 
158  enum ClientType type;
159 
160  union
161  {
167  struct GNUNET_PeerIdentity monitor_peer;
168 
172  struct
173  {
179 
184 
189  } blacklist;
190  } details;
191 };
192 
193 
198 {
203 
208 
213 
218 
222  void *cont_cls;
223 
228 
233 
238 
243 };
244 
245 
250 {
255 
260 
265 };
266 
267 
272 {
277 
281  struct GNUNET_PeerIdentity target;
282 
286  struct GNUNET_TIME_Absolute send_time;
287 
291  unsigned long long uuid;
292 
298  int down;
299 };
300 
301 
306 
311 
319 
324 
329 
334 
339 
345 
351 
357 
363 
368 
373 
378 
383 
388 
393 
398 
403 
408 
413 
418 
426 static void
428  const struct GNUNET_MessageHeader *msg,
429  int may_drop)
430 {
431  struct GNUNET_MQ_Envelope *env;
432 
433  if ((GNUNET_MQ_get_length (tc->mq) >= MAX_PENDING) &&
434  (GNUNET_YES == may_drop))
435  {
436  GNUNET_log (
438  "Dropping message of type %u and size %u, have %u/%u messages pending\n",
439  ntohs (msg->type),
440  ntohs (msg->size),
441  GNUNET_MQ_get_length (tc->mq),
442  MAX_PENDING);
443  GNUNET_STATISTICS_update (GST_stats,
444  gettext_noop (
445  "# messages dropped due to slow client"),
446  1,
447  GNUNET_NO);
448  return;
449  }
450  env = GNUNET_MQ_msg_copy (msg);
451  GNUNET_MQ_send (tc->mq, env);
452 }
453 
454 
464 static void *
465 client_connect_cb (void *cls,
466  struct GNUNET_SERVICE_Client *client,
467  struct GNUNET_MQ_Handle *mq)
468 {
469  struct TransportClient *tc;
470 
471  tc = GNUNET_new (struct TransportClient);
472  tc->client = client;
473  tc->mq = mq;
474  GNUNET_CONTAINER_DLL_insert (clients_head, clients_tail, tc);
475  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p connected\n", tc);
476  return tc;
477 }
478 
479 
485 static void
486 do_blacklist_check (void *cls);
487 
488 
498 static int
499 mark_match_down (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
500 {
501  struct TransportClient *tc = cls;
502  struct SendTransmitContinuationContext *stcc = value;
503 
504  if (tc == stcc->tc)
505  {
506  stcc->down = GNUNET_YES;
507  stcc->tc = NULL;
508  }
509  return GNUNET_OK;
510 }
511 
512 
521 static void
523  struct GNUNET_SERVICE_Client *client,
524  void *app_ctx)
525 {
526  struct TransportClient *tc = app_ctx;
527  struct GST_BlacklistCheck *bc;
528 
530  "Client %p disconnected, cleaning up.\n",
531  tc);
532  if (NULL != active_stccs)
535  tc);
536  for (struct AddressToStringContext *cur = a2s_head; NULL != cur;
537  cur = cur->next)
538  {
539  if (cur->tc == tc)
540  cur->tc = NULL;
541  }
542  GNUNET_CONTAINER_DLL_remove (clients_head, clients_tail, tc);
543  switch (tc->type)
544  {
545  case CT_NONE:
546  break;
547 
548  case CT_CORE:
549  break;
550 
551  case CT_MONITOR:
552  break;
553 
554  case CT_BLACKLIST:
555  for (bc = bc_head; NULL != bc; bc = bc->next)
556  {
557  if (bc->bl_pos != tc)
558  continue;
559  bc->bl_pos = tc->next;
560  if (NULL == bc->task)
562  }
563  break;
564 
565  case CT_CORE_NO_HANDLERS:
566  break;
567  }
568  GNUNET_free (tc);
569 }
570 
571 
584 static void
586  const struct GNUNET_PeerIdentity *peer,
587  const struct GNUNET_HELLO_Address *address,
589  struct GNUNET_TIME_Absolute state_timeout,
590  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
591  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
592 {
593  struct TransportClient *tc = cls;
594  struct ConnectInfoMessage cim;
595 
597  return;
598  cim.header.size = htons (sizeof(struct ConnectInfoMessage));
600  cim.id = *peer;
601  cim.quota_out = bandwidth_out;
602  unicast (tc, &cim.header, GNUNET_NO);
603 }
604 
605 
614 static void
615 handle_client_start (void *cls, const struct StartMessage *start)
616 {
617  struct TransportClient *tc = cls;
618  const struct GNUNET_MessageHeader *hello;
619  uint32_t options;
620 
621  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Client %p sent START\n", tc);
622  options = ntohl (start->options);
623  if ((0 != (1 & options)) &&
624  (0 != memcmp (&start->self,
626  sizeof(struct GNUNET_PeerIdentity))))
627  {
628  /* client thinks this is a different peer, reject */
629  GNUNET_break (0);
631  return;
632  }
633  if (CT_NONE != tc->type)
634  {
635  GNUNET_break (0);
637  return;
638  }
639  if (0 != (2 & options))
640  tc->type = CT_CORE;
641  else
643  hello = GST_hello_get ();
644  if (NULL != hello)
645  unicast (tc, hello, GNUNET_NO);
648 }
649 
650 
657 static int
658 check_client_hello (void *cls, const struct GNUNET_MessageHeader *message)
659 {
660  return GNUNET_OK; /* FIXME: check here? */
661 }
662 
663 
670 static void
671 handle_client_hello (void *cls, const struct GNUNET_MessageHeader *message)
672 {
673  struct TransportClient *tc = cls;
674 
675  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Received HELLO message\n");
676  GST_validation_handle_hello (message);
678 }
679 
680 
690 static void
692  int success,
693  size_t bytes_payload,
694  size_t bytes_on_wire)
695 {
696  struct SendTransmitContinuationContext *stcc = cls;
697  struct SendOkMessage send_ok_msg;
698  struct GNUNET_TIME_Relative delay;
699  const struct GNUNET_HELLO_Address *addr;
700 
703 #ifdef ENABLE_TTD
704  if (delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
706  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
708  (unsigned int) bytes_payload,
709  (unsigned int) bytes_on_wire,
710  GNUNET_i2s (&stcc->target),
711  success,
712  (NULL != addr) ? addr->transport_name : "%");
713  else
715  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
717  (unsigned int) bytes_payload,
718  (unsigned int) bytes_on_wire,
719  GNUNET_i2s (&stcc->target),
720  success,
721  (NULL != addr) ? addr->transport_name : "%");
722 #endif
723 
724  if (GNUNET_NO == stcc->down)
725  {
726  /* Only send confirmation if we are still connected */
728  "Sending SEND_OK for transmission request %llu\n",
729  stcc->uuid);
730  send_ok_msg.header.size = htons (sizeof(send_ok_msg));
731  send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
732  send_ok_msg.bytes_msg = htons (bytes_payload);
733  send_ok_msg.bytes_physical = htonl (bytes_on_wire);
734  send_ok_msg.success = htons (success);
735  send_ok_msg.peer = stcc->target;
736  unicast (stcc->tc, &send_ok_msg.header, GNUNET_NO);
737  }
738  GNUNET_assert (
739  GNUNET_OK ==
740  GNUNET_CONTAINER_multipeermap_remove (active_stccs, &stcc->target, stcc));
741  GNUNET_free (stcc);
742 }
743 
744 
751 static int
752 check_client_send (void *cls, const struct OutboundMessage *obm)
753 {
754  uint16_t size;
755  const struct GNUNET_MessageHeader *obmm;
756 
757  size = ntohs (obm->header.size) - sizeof(struct OutboundMessage);
758  if (size < sizeof(struct GNUNET_MessageHeader))
759  {
760  GNUNET_break (0);
761  return GNUNET_SYSERR;
762  }
763  obmm = (const struct GNUNET_MessageHeader *) &obm[1];
764  if (size != ntohs (obmm->size))
765  {
766  GNUNET_break (0);
767  return GNUNET_SYSERR;
768  }
769  return GNUNET_OK;
770 }
771 
772 
779 static void
780 handle_client_send (void *cls, const struct OutboundMessage *obm)
781 {
782  static unsigned long long uuid_gen;
783  struct TransportClient *tc = cls;
784  const struct GNUNET_MessageHeader *obmm;
785  struct SendTransmitContinuationContext *stcc;
786 
787  obmm = (const struct GNUNET_MessageHeader *) &obm[1];
789  {
790  /* not connected, not allowed to send; can happen due to asynchronous operations */
792  "Could not send message to peer `%s': not connected\n",
793  GNUNET_i2s (&obm->peer));
795  GST_stats,
796  gettext_noop ("# bytes payload dropped (other peer was not connected)"),
797  ntohs (obmm->size),
798  GNUNET_NO);
800  return;
801  }
802  GNUNET_log (
804  "Received SEND request %llu for `%s' and first message of type %u and total size %u\n",
805  uuid_gen,
806  GNUNET_i2s (&obm->peer),
807  ntohs (obmm->type),
808  ntohs (obmm->size));
810 
812  stcc->target = obm->peer;
813  stcc->tc = tc;
815  stcc->uuid = uuid_gen++;
817  active_stccs,
818  &stcc->target,
819  stcc,
822  obmm,
823  ntohs (obmm->size),
826  stcc);
827 }
828 
829 
844 static void
845 transmit_address_to_client (void *cls, const char *buf, int res)
846 {
847  struct AddressToStringContext *actx = cls;
848  struct GNUNET_MQ_Envelope *env;
849  struct AddressToStringResultMessage *atsm;
850  size_t slen;
851 
852  GNUNET_assert ((GNUNET_OK == res) || (GNUNET_SYSERR == res));
853  if (NULL == actx->tc)
854  return;
855  if (NULL == buf)
856  {
857  env = GNUNET_MQ_msg (atsm,
859  if (GNUNET_OK == res)
860  {
861  /* this was the last call, transmit */
862  atsm->res = htonl (GNUNET_OK);
863  atsm->addr_len = htonl (0);
864  GNUNET_MQ_send (actx->tc->mq, env);
865  GNUNET_CONTAINER_DLL_remove (a2s_head, a2s_tail, actx);
866  GNUNET_free (actx);
867  return;
868  }
869  if (GNUNET_SYSERR == res)
870  {
871  /* address conversion failed, but there will be more callbacks */
872  atsm->res = htonl (GNUNET_SYSERR);
873  atsm->addr_len = htonl (0);
874  GNUNET_MQ_send (actx->tc->mq, env);
875  return;
876  }
877  }
878  GNUNET_assert (GNUNET_OK == res);
879  /* succesful conversion, append*/
880  slen = strlen (buf) + 1;
881  env =
882  GNUNET_MQ_msg_extra (atsm,
883  slen,
885  atsm->res = htonl (GNUNET_YES);
886  atsm->addr_len = htonl (slen);
887  GNUNET_memcpy (&atsm[1], buf, slen);
888  GNUNET_MQ_send (actx->tc->mq, env);
889 }
890 
891 
899 static int
901  const struct AddressLookupMessage *alum)
902 {
903  const char *plugin_name;
904  const char *address;
905  uint32_t address_len;
906  uint16_t size;
907 
908  size = ntohs (alum->header.size);
909  address_len = ntohs (alum->addrlen);
910  if (size <= sizeof(struct AddressLookupMessage) + address_len)
911  {
912  GNUNET_break (0);
913  return GNUNET_SYSERR;
914  }
915  address = (const char *) &alum[1];
916  plugin_name = (const char *) &address[address_len];
917  if ('\0' != plugin_name[size - sizeof(struct AddressLookupMessage)
918  - address_len - 1])
919  {
920  GNUNET_break (0);
921  return GNUNET_SYSERR;
922  }
923  return GNUNET_OK;
924 }
925 
926 
933 static void
935  const struct AddressLookupMessage *alum)
936 {
937  struct TransportClient *tc = cls;
939  const char *plugin_name;
940  const char *address;
941  uint32_t address_len;
942  struct AddressToStringContext *actx;
943  struct GNUNET_MQ_Envelope *env;
944  struct AddressToStringResultMessage *atsm;
945  struct GNUNET_TIME_Relative rtimeout;
946  int32_t numeric;
947 
948  address_len = ntohs (alum->addrlen);
949  address = (const char *) &alum[1];
950  plugin_name = (const char *) &address[address_len];
951  rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
952  numeric = ntohs (alum->numeric_only);
953  papi = GST_plugins_printer_find (plugin_name);
954  if (NULL == papi)
955  {
957  "Failed to find plugin `%s'\n",
958  plugin_name);
959  env = GNUNET_MQ_msg (atsm,
961  atsm->res = htonl (GNUNET_SYSERR);
962  atsm->addr_len = htonl (0);
963  GNUNET_MQ_send (tc->mq, env);
964  env = GNUNET_MQ_msg (atsm,
966  atsm->res = htonl (GNUNET_OK);
967  atsm->addr_len = htonl (0);
968  GNUNET_MQ_send (tc->mq, env);
969  return;
970  }
971  actx = GNUNET_new (struct AddressToStringContext);
972  actx->tc = tc;
973  GNUNET_CONTAINER_DLL_insert (a2s_head, a2s_tail, actx);
976  "Pretty-printing address of %u bytes using plugin `%s'\n",
977  address_len,
978  plugin_name);
979  papi->address_pretty_printer (papi->cls,
980  plugin_name,
981  address,
982  address_len,
983  numeric,
984  rtimeout,
986  actx);
987 }
988 
989 
997 static struct PeerIterateResponseMessage *
999  const struct GNUNET_PeerIdentity *peer,
1000  const struct GNUNET_HELLO_Address *address)
1001 {
1003  size_t size;
1004  size_t tlen;
1005  size_t alen;
1006  char *addr;
1007 
1008  GNUNET_assert (NULL != peer);
1009  if (NULL != address)
1010  {
1011  tlen = strlen (address->transport_name) + 1;
1012  alen = address->address_length;
1013  }
1014  else
1015  {
1016  tlen = 0;
1017  alen = 0;
1018  }
1019  size = (sizeof(struct PeerIterateResponseMessage) + alen + tlen);
1020  msg = GNUNET_malloc (size);
1021  msg->header.size = htons (size);
1022  msg->header.type =
1024  msg->reserved = htonl (0);
1025  msg->peer = *peer;
1026  msg->addrlen = htonl (alen);
1027  msg->pluginlen = htonl (tlen);
1028 
1029  if (NULL != address)
1030  {
1031  msg->local_address_info = htonl ((uint32_t) address->local_info);
1032  addr = (char *) &msg[1];
1033  GNUNET_memcpy (addr, address->address, alen);
1034  GNUNET_memcpy (&addr[alen], address->transport_name, tlen);
1035  }
1036  return msg;
1037 }
1038 
1039 
1044 struct IterationContext
1045 {
1050 
1055 
1059  int all;
1060 };
1061 
1062 
1074 static void
1076  const struct GNUNET_PeerIdentity *peer,
1077  const struct GNUNET_HELLO_Address *address,
1079  struct GNUNET_TIME_Absolute state_timeout,
1080  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
1081  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
1082 {
1083  struct IterationContext *pc = cls;
1084  struct GNUNET_MQ_Envelope *env;
1086 
1087  if ((GNUNET_YES != pc->all) && (0 != memcmp (peer, &pc->id, sizeof(pc->id))))
1088  return;
1090  "Sending information about `%s' using address `%s' in state `%s'\n",
1091  GNUNET_i2s (peer),
1092  (NULL != address) ? GST_plugins_a2s (address) : "<none>",
1093  GNUNET_TRANSPORT_ps2s (state));
1094  msg = compose_address_iterate_response_message (peer, address);
1095  msg->state = htonl (state);
1096  msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
1097  env = GNUNET_MQ_msg_copy (&msg->header);
1098  GNUNET_free (msg);
1099  GNUNET_MQ_send (pc->tc->mq, env);
1100 }
1101 
1102 
1110 static void
1112 {
1113  struct TransportClient *tc = cls;
1114  struct IterationContext pc;
1115 
1116  if (CT_NONE != tc->type)
1117  {
1118  GNUNET_break (0);
1120  return;
1121  }
1124 
1125  /* Send initial list */
1126  pc.tc = tc;
1127  if (0 == memcmp (&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1128  {
1129  /* iterate over all neighbours */
1130  pc.all = GNUNET_YES;
1131  pc.id = msg->peer;
1132  }
1133  else
1134  {
1135  /* just return one neighbour */
1136  pc.all = GNUNET_NO;
1137  pc.id = msg->peer;
1138  }
1140 
1141  if (GNUNET_YES != ntohl (msg->one_shot))
1142  {
1143  tc->details.monitor_peer = msg->peer;
1144  tc->type = CT_MONITOR;
1145  if (0 !=
1146  memcmp (&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1148  "Client %p started monitoring of the peer `%s'\n",
1149  tc,
1150  GNUNET_i2s (&msg->peer));
1151  else
1153  "Client %p started monitoring all peers\n",
1154  tc);
1155  }
1156  else
1157  {
1158  struct GNUNET_MessageHeader *msg;
1159  struct GNUNET_MQ_Envelope *env;
1160 
1161  env =
1162  GNUNET_MQ_msg (msg,
1164  GNUNET_MQ_send (tc->mq, env);
1165  }
1166 }
1167 
1168 
1181 static void
1183  struct GNUNET_ATS_Session *session,
1184  const struct GNUNET_TRANSPORT_SessionInfo *info)
1185 {
1186  struct GNUNET_MQ_Envelope *env;
1188  struct GNUNET_MessageHeader *sync;
1189  size_t size;
1190  size_t slen;
1191  uint16_t alen;
1192  char *name;
1193  char *addr;
1194 
1195  if (0 == GNUNET_notification_context_get_size (plugin_nc))
1196  {
1197  GST_plugins_monitor_subscribe (NULL, NULL);
1198  return;
1199  }
1200  if ((NULL == info) && (NULL == session))
1201  {
1202  /* end of initial iteration */
1203  if (NULL != sync_client)
1204  {
1205  env =
1207  GNUNET_MQ_send (sync_client->mq, env);
1208  sync_client = NULL;
1209  }
1210  return;
1211  }
1212  GNUNET_assert (NULL != info);
1214  "Plugin event for peer %s on transport %s\n",
1215  GNUNET_i2s (&info->address->peer),
1216  info->address->transport_name);
1217  slen = strlen (info->address->transport_name) + 1;
1218  alen = info->address->address_length;
1219  size = sizeof(struct TransportPluginMonitorMessage) + slen + alen;
1220  if (size > UINT16_MAX)
1221  {
1222  GNUNET_break (0);
1223  return;
1224  }
1225  msg = GNUNET_malloc (size);
1226  msg->header.size = htons (size);
1228  msg->session_state = htons ((uint16_t) info->state);
1229  msg->is_inbound = htons ((int16_t) info->is_inbound);
1230  msg->msgs_pending = htonl (info->num_msg_pending);
1231  msg->bytes_pending = htonl (info->num_bytes_pending);
1234  msg->peer = info->address->peer;
1235  msg->session_id = (uint64_t) (intptr_t) session;
1236  msg->plugin_name_len = htons (slen);
1237  msg->plugin_address_len = htons (alen);
1238  name = (char *) &msg[1];
1239  GNUNET_memcpy (name, info->address->transport_name, slen);
1240  addr = &name[slen];
1241  GNUNET_memcpy (addr, info->address->address, alen);
1242  if (NULL != sync_client)
1243  {
1244  struct GNUNET_MQ_Envelope *env;
1245 
1246  env = GNUNET_MQ_msg_copy (&msg->header);
1247  GNUNET_MQ_send (sync_client->mq, env);
1248  }
1249  else
1250  {
1252  }
1253  GNUNET_free (msg);
1254 }
1255 
1256 
1263 static void
1265  const struct GNUNET_MessageHeader *message)
1266 {
1267  struct TransportClient *tc = cls;
1268 
1271  GNUNET_notification_context_add (plugin_nc, tc->mq);
1272  GNUNET_assert (NULL == sync_client);
1273  sync_client = tc;
1275 }
1276 
1277 
1284 void
1285 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
1286 {
1287  int done;
1288 
1290  "Asked to broadcast message of type %u with %u bytes\n",
1291  (unsigned int) ntohs (msg->type),
1292  (unsigned int) ntohs (msg->size));
1293  done = GNUNET_NO;
1294  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1295  {
1296  if (CT_NONE == tc->type)
1297  continue; /* client not yet ready */
1298  if ((GNUNET_YES == may_drop) && (CT_CORE != tc->type))
1299  continue; /* skip, this client does not care about payload */
1300  unicast (tc, msg, may_drop);
1301  done = GNUNET_YES;
1302  }
1303  if (GNUNET_NO == done)
1305  "Message of type %u not delivered, is CORE service up?\n",
1306  ntohs (msg->type));
1307 }
1308 
1309 
1318 void
1320  const struct GNUNET_PeerIdentity *peer,
1321  const struct GNUNET_HELLO_Address *address,
1323  struct GNUNET_TIME_Absolute state_timeout)
1324 {
1325  struct GNUNET_MQ_Envelope *env;
1327 
1328  msg = compose_address_iterate_response_message (peer, address);
1329  msg->state = htonl (state);
1330  msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
1331  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1332  {
1333  if (CT_MONITOR != tc->type)
1334  continue;
1335  if ((0 == memcmp (&tc->details.monitor_peer,
1336  &all_zeros,
1337  sizeof(struct GNUNET_PeerIdentity))) ||
1338  (0 == memcmp (&tc->details.monitor_peer,
1339  peer,
1340  sizeof(struct GNUNET_PeerIdentity))))
1341  {
1342  env = GNUNET_MQ_msg_copy (&msg->header);
1343  GNUNET_MQ_send (tc->mq, env);
1344  }
1345  }
1346  GNUNET_free (msg);
1347 }
1348 
1349 
1359 static int
1360 mark_peer_down (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
1361 {
1362  struct SendTransmitContinuationContext *stcc = value;
1363 
1364  stcc->down = GNUNET_YES;
1365  return GNUNET_OK;
1366 }
1367 
1368 
1375 void
1377 {
1378  struct DisconnectInfoMessage disconnect_msg;
1379 
1381  peer,
1382  &mark_peer_down,
1383  NULL);
1384  disconnect_msg.header.size = htons (sizeof(struct DisconnectInfoMessage));
1385  disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
1386  disconnect_msg.reserved = htonl (0);
1387  disconnect_msg.peer = *peer;
1388  GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
1389 }
1390 
1391 
1403 static void
1405  const struct GNUNET_PeerIdentity *peer,
1406  const struct GNUNET_HELLO_Address *address,
1408  struct GNUNET_TIME_Absolute state_timeout,
1409  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
1410  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
1411 {
1412  const struct GNUNET_MessageHeader *hello = cls;
1413 
1414  if (0 == memcmp (peer, &GST_my_identity, sizeof(struct GNUNET_PeerIdentity)))
1415  return; /* not to ourselves */
1417  return;
1418 
1419  GST_neighbours_send (peer,
1420  hello,
1421  ntohs (hello->size),
1423  NULL,
1424  NULL);
1425 }
1426 
1427 
1434 static void
1435 process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
1436 {
1437  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to clients\n");
1439  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to neighbours\n");
1440  GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
1441 }
1442 
1443 
1454 static struct GNUNET_TIME_Relative
1456  struct GNUNET_ATS_Session *session,
1457  const struct GNUNET_MessageHeader *message)
1458 {
1459  struct GNUNET_TIME_Relative ret;
1460  int do_forward;
1461  struct InboundMessage *im;
1462  size_t msg_size = ntohs (message->size);
1463  size_t size = sizeof(struct InboundMessage) + msg_size;
1464  char buf[size] GNUNET_ALIGN;
1465 
1466  do_forward = GNUNET_SYSERR;
1467  ret = GST_neighbours_calculate_receive_delay (&address->peer,
1468  msg_size,
1469  &do_forward);
1470  if (! GST_neighbours_test_connected (&address->peer))
1471  {
1473  "Discarded %u bytes type %u payload from peer `%s'\n",
1474  (unsigned int) msg_size,
1475  ntohs (message->type),
1476  GNUNET_i2s (&address->peer));
1478  GST_stats,
1479  gettext_noop ("# bytes payload discarded due to not connected peer"),
1480  msg_size,
1481  GNUNET_NO);
1482  return ret;
1483  }
1484 
1485  if (GNUNET_YES != do_forward)
1486  return ret;
1487  im = (struct InboundMessage *) buf;
1488  im->header.size = htons (size);
1490  im->peer = address->peer;
1491  GNUNET_memcpy (&im[1], message, ntohs (message->size));
1493  return ret;
1494 }
1495 
1496 
1502 static void
1504 {
1505  struct GNUNET_ATS_SessionKiller *sk = cls;
1506 
1507  sk->task = NULL;
1508  GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
1509  sk->plugin->disconnect_session (sk->plugin->cls, sk->session);
1510  GNUNET_free (sk);
1511 }
1512 
1513 
1521 static void
1522 kill_session (const char *plugin_name, struct GNUNET_ATS_Session *session)
1523 {
1525  struct GNUNET_ATS_SessionKiller *sk;
1526 
1527  for (sk = sk_head; NULL != sk; sk = sk->next)
1528  if (sk->session == session)
1529  return;
1530  plugin = GST_plugins_find (plugin_name);
1531  if (NULL == plugin)
1532  {
1533  GNUNET_break (0);
1534  return;
1535  }
1536  /* need to issue disconnect asynchronously */
1537  sk = GNUNET_new (struct GNUNET_ATS_SessionKiller);
1538  sk->session = session;
1539  sk->plugin = plugin;
1541  GNUNET_CONTAINER_DLL_insert (sk_head, sk_tail, sk);
1542 }
1543 
1544 
1555 static void
1557  const struct GNUNET_PeerIdentity *peer,
1558  const struct GNUNET_HELLO_Address *address,
1559  struct GNUNET_ATS_Session *session,
1560  int result)
1561 {
1562  struct GNUNET_MessageHeader *msg = cls;
1563 
1564  if (GNUNET_OK == result)
1565  {
1566  /* Blacklist allows to speak to this peer, forward SYN to neighbours */
1568  "Received SYN message from peer `%s' at `%s'\n",
1569  GNUNET_i2s (peer),
1570  GST_plugins_a2s (address));
1571  if (GNUNET_OK != GST_neighbours_handle_session_syn (msg, peer))
1572  {
1573  GST_blacklist_abort_matching (address, session);
1574  kill_session (address->transport_name, session);
1575  }
1576  GNUNET_free (msg);
1577  return;
1578  }
1579  GNUNET_free (msg);
1580  if (GNUNET_SYSERR == result)
1581  return; /* check was aborted, session destroyed */
1582  /* Blacklist denies to speak to this peer */
1584  "Discarding SYN message from `%s' due to denied blacklist check\n",
1585  GNUNET_i2s (peer));
1586  kill_session (address->transport_name, session);
1587 }
1588 
1589 
1603 struct GNUNET_TIME_Relative
1605  const struct GNUNET_HELLO_Address *address,
1606  struct GNUNET_ATS_Session *session,
1607  const struct GNUNET_MessageHeader *message)
1608 {
1609  const char *plugin_name = cls;
1610  struct GNUNET_TIME_Relative ret;
1611  uint16_t type;
1612 
1613  ret = GNUNET_TIME_UNIT_ZERO;
1614  if (NULL == message)
1615  goto end;
1616  type = ntohs (message->type);
1618  "Received message with type %u from peer `%s' at %s\n",
1619  type,
1620  GNUNET_i2s (&address->peer),
1621  GST_plugins_a2s (address));
1622 
1623  GNUNET_STATISTICS_update (GST_stats,
1624  gettext_noop ("# bytes total received"),
1625  ntohs (message->size),
1626  GNUNET_NO);
1627  GST_neighbours_notify_data_recv (address, message);
1628  switch (type)
1629  {
1631  /* Legacy HELLO message, discard */
1632  return ret;
1633 
1635  if (GNUNET_OK != GST_validation_handle_hello (message))
1636  {
1637  GNUNET_break_op (0);
1638  GST_blacklist_abort_matching (address, session);
1639  }
1640  return ret;
1641 
1644  "Processing PING from `%s'\n",
1645  GST_plugins_a2s (address));
1646  if (GNUNET_OK !=
1647  GST_validation_handle_ping (&address->peer, message, address, session))
1648  {
1649  GST_blacklist_abort_matching (address, session);
1650  kill_session (plugin_name, session);
1651  }
1652  break;
1653 
1656  "Processing PONG from `%s'\n",
1657  GST_plugins_a2s (address));
1658  if (GNUNET_OK != GST_validation_handle_pong (&address->peer, message))
1659  {
1660  GNUNET_break_op (0);
1661  GST_blacklist_abort_matching (address, session);
1662  kill_session (plugin_name, session);
1663  }
1664  break;
1665 
1667  /* Do blacklist check if communication with this peer is allowed */
1668  (void) GST_blacklist_test_allowed (&address->peer,
1669  NULL,
1671  GNUNET_copy_message (message),
1672  address,
1673  session);
1674  break;
1675 
1677  if (GNUNET_OK !=
1678  GST_neighbours_handle_session_syn_ack (message, address, session))
1679  {
1680  GST_blacklist_abort_matching (address, session);
1681  kill_session (plugin_name, session);
1682  }
1683  break;
1684 
1686  if (GNUNET_OK !=
1687  GST_neighbours_handle_session_ack (message, address, session))
1688  {
1689  GNUNET_break_op (0);
1690  GST_blacklist_abort_matching (address, session);
1691  kill_session (plugin_name, session);
1692  }
1693  break;
1694 
1696  GST_neighbours_handle_disconnect_message (&address->peer, message);
1697  break;
1698 
1700  GST_neighbours_handle_quota_message (&address->peer, message);
1701  break;
1702 
1704  GST_neighbours_keepalive (&address->peer, message);
1705  break;
1706 
1708  GST_neighbours_keepalive_response (&address->peer, message);
1709  break;
1710 
1711  default:
1712  /* should be payload */
1713  GNUNET_STATISTICS_update (GST_stats,
1714  gettext_noop ("# bytes payload received"),
1715  ntohs (message->size),
1716  GNUNET_NO);
1717  ret = process_payload (address, session, message);
1718  break;
1719  }
1720 end:
1722  "Allowing receive from peer %s to continue in %s\n",
1723  GNUNET_i2s (&address->peer),
1725  return ret;
1726 }
1727 
1728 
1738 static void
1740  void *cls,
1741  int add_remove,
1742  const struct GNUNET_HELLO_Address *address)
1743 {
1744  static int addresses = 0;
1745 
1746  if (GNUNET_YES == add_remove)
1747  {
1748  addresses++;
1749  GNUNET_STATISTICS_update (GST_stats, "# transport addresses", 1, GNUNET_NO);
1750  }
1751  else if (GNUNET_NO == add_remove)
1752  {
1753  if (0 == addresses)
1754  {
1755  GNUNET_break (0);
1756  }
1757  else
1758  {
1759  addresses--;
1760  GNUNET_STATISTICS_update (GST_stats,
1761  "# transport addresses",
1762  -1,
1763  GNUNET_NO);
1764  }
1765  }
1767  "Transport now has %u addresses to communicate\n",
1768  addresses);
1769  GST_hello_modify_addresses (add_remove, address);
1770 }
1771 
1772 
1786 static void
1788  const struct GNUNET_HELLO_Address *address,
1789  struct GNUNET_ATS_Session *session)
1790 {
1791  struct GNUNET_ATS_SessionKiller *sk;
1792 
1793  if (NULL == address)
1794  {
1795  GNUNET_break (0);
1796  return;
1797  }
1798  if (NULL == session)
1799  {
1800  GNUNET_break (0);
1801  return;
1802  }
1803  GNUNET_assert (strlen (address->transport_name) > 0);
1804 
1805  GNUNET_log (
1807  "Notification from plugin about terminated session %p from peer `%s' address `%s'\n",
1808  session,
1809  GNUNET_i2s (&address->peer),
1810  GST_plugins_a2s (address));
1811 
1812  GST_neighbours_session_terminated (&address->peer, session);
1813  GST_ats_del_session (address, session);
1814  GST_blacklist_abort_matching (address, session);
1815 
1816  for (sk = sk_head; NULL != sk; sk = sk->next)
1817  {
1818  if (sk->session == session)
1819  {
1820  GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
1822  GNUNET_free (sk);
1823  break;
1824  }
1825  }
1826 }
1827 
1828 
1840 static void
1842  void *cls,
1843  const struct GNUNET_PeerIdentity *peer,
1844  const struct GNUNET_HELLO_Address *address,
1845  struct GNUNET_ATS_Session *session,
1846  int result)
1847 {
1848  if (GNUNET_OK != result)
1849  {
1850  kill_session (address->transport_name, session);
1851  return;
1852  }
1853  if (GNUNET_YES !=
1856  {
1858  "Informing verifier about inbound session's address `%s'\n",
1859  GST_plugins_a2s (address));
1861  }
1862 }
1863 
1864 
1873 static void
1875  const struct GNUNET_HELLO_Address *address,
1876  struct GNUNET_ATS_Session *session,
1878 {
1879  struct GNUNET_ATS_Properties prop;
1880 
1881  if (NULL == address)
1882  {
1883  GNUNET_break (0);
1884  return;
1885  }
1886  if (NULL == session)
1887  {
1888  GNUNET_break (0);
1889  return;
1890  }
1891  GNUNET_log (
1893  "Notification from plugin `%s' about new session from peer `%s' address `%s'\n",
1894  address->transport_name,
1895  GNUNET_i2s (&address->peer),
1896  GST_plugins_a2s (address));
1897  if (GNUNET_YES ==
1900  {
1901  /* inbound is always new, but outbound MAY already be known, but
1902  for example for UNIX, we have symmetric connections and thus we
1903  may not know the address yet; add if necessary! */
1904  /* FIXME: maybe change API here so we just pass scope? */
1905  memset (&prop, 0, sizeof(prop));
1907  prop.scope = scope;
1908  GST_ats_add_inbound_address (address, session, &prop);
1909  }
1910  /* Do blacklist check if communication with this peer is allowed */
1911  (void) GST_blacklist_test_allowed (&address->peer,
1912  address->transport_name,
1914  NULL,
1915  address,
1916  session);
1917 }
1918 
1919 
1938 static void
1940  const struct GNUNET_PeerIdentity *peer,
1941  const struct GNUNET_HELLO_Address *address,
1942  struct GNUNET_ATS_Session *session,
1943  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
1944  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
1945 {
1946  uint32_t bw_in = ntohl (bandwidth_in.value__);
1947  uint32_t bw_out = ntohl (bandwidth_out.value__);
1948 
1949  if (NULL == peer)
1950  {
1951  /* ATS service died, all suggestions become invalid!
1952  (but we'll keep using the allocations for a little
1953  while, to keep going while ATS restarts) */
1954  /* FIXME: We should drop all
1955  connections now, as ATS won't explicitly tell
1956  us and be unaware of ongoing resource allocations! */
1957  return;
1958  }
1959  /* ATS tells me to disconnect from peer */
1960  if ((0 == bw_in) && (0 == bw_out))
1961  {
1963  "ATS tells me to disconnect from peer `%s'\n",
1964  GNUNET_i2s (peer));
1966  return;
1967  }
1968  GNUNET_assert (NULL != address);
1969  GNUNET_STATISTICS_update (GST_stats,
1970  "# ATS suggestions received",
1971  1,
1972  GNUNET_NO);
1974  session,
1975  bandwidth_in,
1976  bandwidth_out);
1977 }
1978 
1979 
1984 {
1988  int first;
1989 
1994 };
1995 
1996 
2008 static void
2010  const struct GNUNET_PeerIdentity *peer,
2011  const struct GNUNET_HELLO_Address *address,
2012  struct GNUNET_ATS_Session *session,
2013  int allowed)
2014 {
2015  if (GNUNET_OK == allowed)
2016  return; /* we're done */
2017  GNUNET_STATISTICS_update (GST_stats,
2018  gettext_noop ("# disconnects due to blacklist"),
2019  1,
2020  GNUNET_NO);
2022 }
2023 
2024 
2037 static void
2039  const struct GNUNET_PeerIdentity *peer,
2040  const struct GNUNET_HELLO_Address *address,
2042  struct GNUNET_TIME_Absolute state_timeout,
2043  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
2044  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
2045 {
2046  struct TestConnectionContext *tcc = cls;
2047  struct GST_BlacklistCheck *bc;
2048 
2049  bc = GNUNET_new (struct GST_BlacklistCheck);
2050  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2051  bc->peer = *peer;
2052  bc->address = GNUNET_HELLO_address_copy (address);
2054  bc->cont_cls = NULL;
2055  bc->bl_pos = tcc->tc;
2056  if (GNUNET_YES == tcc->first)
2057  {
2058  /* all would wait for the same client, no need to
2059  * create more than just the first task right now */
2061  tcc->first = GNUNET_NO;
2062  }
2063 }
2064 
2065 
2074 static void
2076  const struct GNUNET_MessageHeader *message)
2077 {
2078  struct TransportClient *tc = cls;
2079  struct TestConnectionContext tcc;
2080 
2081  if (CT_NONE != tc->type)
2082  {
2083  GNUNET_break (0);
2085  return;
2086  }
2088  tc->type = CT_BLACKLIST;
2089  tc->details.blacklist.call_receive_done = GNUNET_YES;
2090  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New blacklist client %p\n", tc);
2091  /* confirm that all existing connections are OK! */
2092  tcc.tc = tc;
2093  tcc.first = GNUNET_YES;
2095 }
2096 
2097 
2106 static int
2108  const struct GNUNET_PeerIdentity *key,
2109  void *value)
2110 {
2111  char *be = value;
2112 
2113  GNUNET_free (be);
2114  return GNUNET_OK;
2115 }
2116 
2117 
2124 static void
2125 handle_client_set_metric (void *cls, const struct TrafficMetricMessage *tm)
2126 {
2127  struct TransportClient *tc = cls;
2128 
2131 }
2132 
2133 
2140 static void
2141 shutdown_task (void *cls)
2142 {
2143  struct AddressToStringContext *cur;
2144 
2146  GST_plugins_unload ();
2148  GST_ats_done ();
2149  GNUNET_ATS_scheduling_done (GST_ats);
2150  GST_ats = NULL;
2151  GNUNET_ATS_connectivity_done (GST_ats_connect);
2152  GST_ats_connect = NULL;
2153  GNUNET_NT_scanner_done (GST_is);
2154  GST_is = NULL;
2155  while (NULL != (cur = a2s_head))
2156  {
2157  GNUNET_CONTAINER_DLL_remove (a2s_head, a2s_tail, cur);
2158  GNUNET_free (cur);
2159  }
2160  if (NULL != plugin_nc)
2161  {
2163  plugin_nc = NULL;
2164  }
2166  active_stccs = NULL;
2167  if (NULL != blacklist)
2168  {
2171  NULL);
2173  blacklist = NULL;
2174  }
2175  GST_hello_stop ();
2177 
2178  if (NULL != GST_peerinfo)
2179  {
2180  GNUNET_PEERINFO_disconnect (GST_peerinfo);
2181  GST_peerinfo = NULL;
2182  }
2183  if (NULL != GST_stats)
2184  {
2185  GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
2186  GST_stats = NULL;
2187  }
2188 }
2189 
2190 
2196 static void
2198 {
2199  struct GST_BlacklistCheck *bc = cls;
2200  struct TransportClient *tc;
2201  struct GNUNET_MQ_Envelope *env;
2202  struct BlacklistMessage *bm;
2203 
2204  bc->task = NULL;
2205  while (NULL != (tc = bc->bl_pos))
2206  {
2207  if (CT_BLACKLIST == tc->type)
2208  break;
2209  bc->bl_pos = tc->next;
2210  }
2211  if (NULL == tc)
2212  {
2214  "No other blacklist clients active, will allow neighbour `%s'\n",
2215  GNUNET_i2s (&bc->peer));
2216 
2217  bc->cont (bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_OK);
2219  return;
2220  }
2221  if ((NULL != tc->details.blacklist.bc) ||
2222  (GNUNET_NO != tc->details.blacklist.waiting_for_reply))
2223  return; /* someone else busy with this client */
2224  tc->details.blacklist.bc = bc;
2226  bm->is_allowed = htonl (0);
2227  bm->peer = bc->peer;
2228  GNUNET_MQ_send (tc->mq, env);
2229  if (GNUNET_YES == tc->details.blacklist.call_receive_done)
2230  {
2231  tc->details.blacklist.call_receive_done = GNUNET_NO;
2233  }
2234  tc->details.blacklist.waiting_for_reply = GNUNET_YES;
2235 }
2236 
2237 
2244 static void
2246 {
2247  struct TransportClient *tc = cls;
2248  struct GST_BlacklistCheck *bc;
2249 
2250  if (CT_BLACKLIST != tc->type)
2251  {
2252  GNUNET_break (0);
2254  return;
2255  }
2257  "Blacklist client %p sent reply for `%s'\n",
2258  tc,
2259  GNUNET_i2s (&msg->peer));
2260  bc = tc->details.blacklist.bc;
2261  tc->details.blacklist.bc = NULL;
2262  tc->details.blacklist.waiting_for_reply = GNUNET_NO;
2263  tc->details.blacklist.call_receive_done = GNUNET_YES;
2264  if (NULL != bc)
2265  {
2266  /* only run this if the blacklist check has not been
2267  * cancelled in the meantime... */
2268  GNUNET_assert (bc->bl_pos == tc);
2269  if (ntohl (msg->is_allowed) == GNUNET_SYSERR)
2270  {
2272  "Blacklist check failed, peer not allowed\n");
2273  /* For the duration of the continuation, make the ongoing
2274  check invisible (to avoid double-cancellation); then
2275  add it back again so we can re-use GST_blacklist_test_cancel() */
2276  GNUNET_CONTAINER_DLL_remove (bc_head, bc_tail, bc);
2277  bc->cont (bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_NO);
2278  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2280  tc->details.blacklist.call_receive_done = GNUNET_NO;
2282  return;
2283  }
2284  else
2285  {
2287  "Blacklist check succeeded, continuing with checks\n");
2288  tc->details.blacklist.call_receive_done = GNUNET_NO;
2290  bc->bl_pos = tc->next;
2292  }
2293  }
2294  /* check if any other blacklist checks are waiting for this blacklister */
2295  for (bc = bc_head; bc != NULL; bc = bc->next)
2296  if ((bc->bl_pos == tc) && (NULL == bc->task))
2297  {
2299  break;
2300  }
2301 }
2302 
2303 
2310 void
2312  const char *transport_name)
2313 {
2314  char *transport = NULL;
2315 
2316  if (NULL != transport_name)
2317  {
2319  "Adding peer `%s' with plugin `%s' to blacklist\n",
2320  GNUNET_i2s (peer),
2321  transport_name);
2322  transport = GNUNET_strdup (transport_name);
2323  }
2324  else
2326  "Adding peer `%s' with all plugins to blacklist\n",
2327  GNUNET_i2s (peer));
2328  if (NULL == blacklist)
2329  blacklist =
2331  GNUNET_NO);
2332 
2334  peer,
2335  transport,
2337 }
2338 
2339 
2346 void
2348  struct GNUNET_ATS_Session *session)
2349 {
2350  struct GST_BlacklistCheck *bc;
2351  struct GST_BlacklistCheck *n;
2352 
2353  n = bc_head;
2354  while (NULL != (bc = n))
2355  {
2356  n = bc->next;
2357  if ((bc->session == session) &&
2358  (0 == GNUNET_HELLO_address_cmp (bc->address, address)))
2359  {
2360  bc->cont (bc->cont_cls,
2361  &bc->peer,
2362  bc->address,
2363  bc->session,
2364  GNUNET_SYSERR);
2366  }
2367  }
2368 }
2369 
2370 
2380 static int
2381 test_blacklisted (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
2382 {
2383  const char *transport_name = cls;
2384  char *be = value;
2385 
2386  /* Blacklist entry be:
2387  * (NULL == be): peer is blacklisted with all plugins
2388  * (NULL != be): peer is blacklisted for a specific plugin
2389  *
2390  * If (NULL != transport_name) we look for a transport specific entry:
2391  * if (transport_name == be) forbidden
2392  *
2394  "Comparing BL request for peer `%4s':`%s' with BL entry: `%s'\n",
2395  GNUNET_i2s (key),
2396  (NULL == transport_name) ? "unspecified" : transport_name,
2397  (NULL == be) ? "all plugins" : be);
2398  /* all plugins for this peer were blacklisted: disallow */
2399  if (NULL == value)
2400  return GNUNET_NO;
2401 
2402  /* blacklist check for specific transport */
2403  if ((NULL != transport_name) && (NULL != value))
2404  {
2405  if (0 == strcmp (transport_name, be))
2406  return GNUNET_NO; /* plugin is blacklisted! */
2407  }
2408  return GNUNET_OK;
2409 }
2410 
2411 
2424 struct GST_BlacklistCheck *
2426  const char *transport_name,
2428  void *cont_cls,
2429  const struct GNUNET_HELLO_Address *address,
2430  struct GNUNET_ATS_Session *session)
2431 {
2432  struct GST_BlacklistCheck *bc;
2433  struct TransportClient *tc;
2434 
2435  GNUNET_assert (NULL != peer);
2437  "Blacklist check for peer `%s':%s\n",
2438  GNUNET_i2s (peer),
2439  (NULL != transport_name) ? transport_name : "unspecified");
2440 
2441  /* Check local blacklist by iterating over hashmap
2442  * If iteration is aborted, we found a matching blacklist entry */
2443  if ((NULL != blacklist) &&
2444  (GNUNET_SYSERR ==
2446  peer,
2448  (void *) transport_name)))
2449  {
2450  /* Disallowed by config, disapprove instantly */
2451  GNUNET_STATISTICS_update (GST_stats,
2452  gettext_noop ("# disconnects due to blacklist"),
2453  1,
2454  GNUNET_NO);
2456  _ ("Disallowing connection to peer `%s' on transport %s\n"),
2457  GNUNET_i2s (peer),
2458  (NULL != transport_name) ? transport_name : "unspecified");
2459  if (NULL != cont)
2460  cont (cont_cls, peer, address, session, GNUNET_NO);
2461  return NULL;
2462  }
2463 
2464  for (tc = clients_head; NULL != tc; tc = tc->next)
2465  if (CT_BLACKLIST == tc->type)
2466  break;
2467  if (NULL == tc)
2468  {
2469  /* no blacklist clients, approve instantly */
2470  if (NULL != cont)
2471  cont (cont_cls, peer, address, session, GNUNET_OK);
2473  "Allowing connection to peer `%s' %s\n",
2474  GNUNET_i2s (peer),
2475  (NULL != transport_name) ? transport_name : "");
2476  return NULL;
2477  }
2478 
2479  /* need to query blacklist clients */
2480  bc = GNUNET_new (struct GST_BlacklistCheck);
2481  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2482  bc->peer = *peer;
2483  bc->address = GNUNET_HELLO_address_copy (address);
2484  bc->session = session;
2485  bc->cont = cont;
2486  bc->cont_cls = cont_cls;
2487  bc->bl_pos = tc;
2489  return bc;
2490 }
2491 
2492 
2498 void
2500 {
2501  GNUNET_CONTAINER_DLL_remove (bc_head, bc_tail, bc);
2502  if (NULL != bc->bl_pos)
2503  {
2504  if ((CT_BLACKLIST == bc->bl_pos->type) &&
2505  (bc->bl_pos->details.blacklist.bc == bc))
2506  {
2507  /* we're at the head of the queue, remove us! */
2508  bc->bl_pos->details.blacklist.bc = NULL;
2509  }
2510  }
2511  if (NULL != bc->task)
2512  {
2514  bc->task = NULL;
2515  }
2516  GNUNET_free (bc->address);
2517  GNUNET_free (bc);
2518 }
2519 
2520 
2529 static void
2531  const char *section,
2532  const char *option,
2533  const char *value)
2534 {
2535  unsigned int *res = cls;
2536  struct GNUNET_PeerIdentity peer;
2537  char *plugs;
2538  char *pos;
2539 
2540  if (GNUNET_OK !=
2542  strlen (option),
2543  &peer.public_key))
2544  return;
2545 
2546  if ((NULL == value) || (0 == strcmp (value, "")))
2547  {
2548  /* Blacklist whole peer */
2549  GST_blacklist_add_peer (&peer, NULL);
2551  _ ("Adding blacklisting entry for peer `%s'\n"),
2552  GNUNET_i2s (&peer));
2553  }
2554  else
2555  {
2556  plugs = GNUNET_strdup (value);
2557  for (pos = strtok (plugs, " "); pos != NULL; pos = strtok (NULL, " "))
2558  {
2560  _ ("Adding blacklisting entry for peer `%s':`%s'\n"),
2561  GNUNET_i2s (&peer),
2562  pos);
2563  GST_blacklist_add_peer (&peer, pos);
2564  }
2565  GNUNET_free (plugs);
2566  }
2567  (*res)++;
2568 }
2569 
2570 
2577 static void
2579  const struct GNUNET_PeerIdentity *my_id)
2580 {
2581  char cfg_sect[512];
2582  unsigned int res = 0;
2583 
2584  GNUNET_snprintf (cfg_sect,
2585  sizeof(cfg_sect),
2586  "transport-blacklist-%s",
2587  GNUNET_i2s_full (my_id));
2589  cfg_sect,
2591  &res);
2593  "Loaded %u blacklisting entries from configuration\n",
2594  res);
2595 }
2596 
2597 
2605 static void
2606 run (void *cls,
2607  const struct GNUNET_CONFIGURATION_Handle *c,
2609 {
2610  char *keyfile;
2611  long long unsigned int max_fd_cfg;
2612  int max_fd_rlimit;
2613  int max_fd;
2614  int friend_only;
2615 
2616  /* setup globals */
2617  GST_cfg = c;
2619  "PEER",
2620  "PRIVATE_KEY",
2621  &keyfile))
2622  {
2623  GNUNET_log (
2625  _ (
2626  "Transport service is lacking key configuration settings. Exiting.\n"));
2628  return;
2629  }
2631  "transport",
2632  "HELLO_EXPIRATION",
2633  &hello_expiration))
2634  {
2636  }
2637  if (GNUNET_SYSERR ==
2639  GNUNET_YES,
2641  {
2643  "Failed to setup peer's private key\n");
2645  GNUNET_free (keyfile);
2646  return;
2647  }
2648  GNUNET_free (keyfile);
2649  GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
2650  GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
2654  "My identity is `%s'\n",
2656 
2658  if (NULL == GST_peerinfo)
2659  {
2661  _ ("Could not access PEERINFO service. Exiting.\n"));
2663  return;
2664  }
2665 
2666  max_fd_rlimit = 0;
2667 #if HAVE_GETRLIMIT
2668  {
2669  struct rlimit r_file;
2670 
2671  if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
2672  {
2673  max_fd_rlimit = r_file.rlim_cur;
2675  "Maximum number of open files was: %u/%u\n",
2676  (unsigned int) r_file.rlim_cur,
2677  (unsigned int) r_file.rlim_max);
2678  }
2679  max_fd_rlimit =
2680  (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
2681  }
2682 #endif
2684  "transport",
2685  "MAX_FD",
2686  &max_fd_cfg))
2687  max_fd_cfg = max_fd_rlimit;
2688 
2689  if (max_fd_cfg > max_fd_rlimit)
2690  max_fd = max_fd_cfg;
2691  else
2692  max_fd = max_fd_rlimit;
2693  if (max_fd < DEFAULT_MAX_FDS)
2694  max_fd = DEFAULT_MAX_FDS;
2695 
2697  "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
2698  max_fd,
2699  (max_fd / 3),
2700  (max_fd / 3) * 2);
2701 
2702  friend_only =
2703  GNUNET_CONFIGURATION_get_value_yesno (GST_cfg, "topology", "FRIENDS-ONLY");
2704  if (GNUNET_SYSERR == friend_only)
2705  friend_only = GNUNET_NO; /* According to topology defaults */
2706  /* start subsystems */
2707  /* Disable DSTJ peer */
2708  {
2709  struct GNUNET_PeerIdentity dstj;
2710  const char *ds = "DSTJBRRKZ8TBW3FGK6B0M5QXWT9WYNZ45H5MCV4HY7ST64Q8T9F0";
2711 
2712  GNUNET_assert (
2713  GNUNET_OK ==
2715  strlen (ds),
2716  &dstj.public_key));
2717  GST_blacklist_add_peer (&dstj, NULL);
2718  }
2720  GST_is = GNUNET_NT_scanner_init ();
2721  GST_ats_connect = GNUNET_ATS_connectivity_init (GST_cfg);
2722  GST_ats =
2724  GST_ats_init ();
2730  GST_hello_start (friend_only, &process_hello_update, NULL);
2731  GST_neighbours_start ((max_fd / 3) * 2);
2732  active_stccs = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_YES);
2733  plugin_nc = GNUNET_notification_context_create (0);
2734  GST_validation_start ((max_fd / 3));
2735 }
2736 
2737 
2742  "transport",
2744  &run,
2747  NULL,
2750  struct StartMessage,
2751  NULL),
2752  GNUNET_MQ_hd_var_size (client_hello,
2754  struct GNUNET_MessageHeader,
2755  NULL),
2758  struct OutboundMessage,
2759  NULL),
2760  GNUNET_MQ_hd_var_size (client_address_to_string,
2762  struct AddressLookupMessage,
2763  NULL),
2764  GNUNET_MQ_hd_fixed_size (client_monitor_peers,
2766  struct PeerMonitorMessage,
2767  NULL),
2768  GNUNET_MQ_hd_fixed_size (client_blacklist_init,
2770  struct GNUNET_MessageHeader,
2771  NULL),
2772  GNUNET_MQ_hd_fixed_size (client_blacklist_reply,
2774  struct BlacklistMessage,
2775  NULL),
2776  GNUNET_MQ_hd_fixed_size (client_set_metric,
2778  struct TrafficMetricMessage,
2779  NULL),
2780  GNUNET_MQ_hd_fixed_size (client_monitor_plugins,
2782  struct GNUNET_MessageHeader,
2783  NULL),
2785 
2786 
2787 /* end of file gnunet-service-transport.c */
static void plugin_session_info_cb(void *cls, struct GNUNET_ATS_Session *session, const struct GNUNET_TRANSPORT_SessionInfo *info)
Function called by the plugin with information about the current sessions managed by the plugin (for ...
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK.
Definition: transport.h:221
struct GNUNET_HELLO_Address * address
Address for GST_blacklist_abort_matching(), can be NULL.
size_t address_length
Number of bytes in address.
Handle to the interface scanner.
Definition: nt.c:110
struct GNUNET_PeerIdentity id
Identity of the new neighbour.
Definition: transport.h:141
Closure for call_iterator().
enum GNUNET_HELLO_AddressInfo local_info
Extended information about address.
static void done()
Message used to notify the transport API about an address to string conversion.
Definition: transport.h:323
uint32_t num_bytes_pending
Number of bytes pending transmission for this session.
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
static struct GNUNET_CONTAINER_MultiPeerMap * active_stccs
Map of peer identities to active send transmit continuation contexts.
struct GNUNET_MQ_Envelope * GNUNET_MQ_msg_copy(const struct GNUNET_MessageHeader *hdr)
Create a new envelope by copying an existing message.
Definition: mq.c:666
void GST_neighbours_iterate(GST_NeighbourIterator cb, void *cb_cls)
Iterate over all connected neighbours.
Handle to the peerinfo service.
Definition: peerinfo_api.c:84
The notification context is the key datastructure for a convenience API used for transmission of noti...
Definition: nc.c:75
struct GNUNET_PeerIdentity monitor_peer
Peer identity to monitor the addresses of.
struct TransportClient::@81::@82 blacklist
Additional details if type is CT_BLACKLIST.
int GNUNET_CONFIGURATION_get_value_time(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, struct GNUNET_TIME_Relative *time)
Get a configuration value that should be a relative time.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
It is a monitor, forward monitor data.
void GST_clients_broadcast(const struct GNUNET_MessageHeader *msg, int may_drop)
Broadcast the given message to all of our clients.
void(* GST_BlacklistTestContinuation)(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
Continuation called from a blacklist test.
int GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
struct TransportClient * tc
Handle to the blacklisting client we need to ask.
GNUNET_TRANSPORT_PeerState
Possible state of a neighbour.
uint64_t rel_value_us
The actual value.
Context we use when performing a blacklist check.
void GST_validation_start(unsigned int max_fds)
Start the validation subsystem.
static struct GNUNET_ATS_SessionKiller * sk_head
Head of DLL of asynchronous tasks to kill sessions.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_SEND.
Definition: transport.h:289
struct GNUNET_TIME_Absolute send_time
At what time did we receive the message?
const void * address
Binary representation of the address (plugin-specific).
static int end
Set if we are to shutdown all services (including ARM).
Definition: gnunet-arm.c:34
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT
Monitoring event about the connection state of plugins, generated in response to a subscription initi...
void GNUNET_CONFIGURATION_iterate_section_values(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, GNUNET_CONFIGURATION_Iterator iter, void *iter_cls)
Iterate over values of a section in the configuration.
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_PING
Transport PING message.
void GST_plugins_monitor_subscribe(GNUNET_TRANSPORT_SessionInfoCallback cb, void *cb_cls)
Register callback with all plugins to monitor their status.
static void plugin_env_session_start(void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, enum GNUNET_NetworkType scope)
Plugin tells transport service about a new inbound session.
common internal definitions for transport service
struct GNUNET_PeerIdentity peer
Which peer is being blacklisted or queried?
Definition: transport.h:602
static void send_peer_information(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Output information of neighbours to the given client.
void GST_neighbours_keepalive_response(const struct GNUNET_PeerIdentity *neighbour, const struct GNUNET_MessageHeader *m)
We received a KEEP_ALIVE_RESPONSE message and use this to calculate latency to this peer...
uint32_t addr_len
Length of the following string, zero if is GNUNET_SYSERR.
Definition: transport.h:339
void GST_ats_done()
Shutdown ATS subsystem.
struct GNUNET_STATISTICS_Handle * GST_stats
Statistics handle.
struct GNUNET_GETOPT_CommandLineOption options[]
Definition: 002.c:5
Handle to the ATS subsystem for bandwidth/transport scheduling information.
Handle to a service.
Definition: service.c:116
struct GNUNET_PEERINFO_Handle * GNUNET_PEERINFO_connect(const struct GNUNET_CONFIGURATION_Handle *cfg)
Connect to the peerinfo service.
Definition: peerinfo_api.c:130
static void handle_client_blacklist_init(void *cls, const struct GNUNET_MessageHeader *message)
Initialize a blacklisting client.
int GNUNET_snprintf(char *buf, size_t size, const char *format,...)
Like snprintf, just aborts if the buffer is of insufficient size.
struct GNUNET_PeerIdentity GST_my_identity
Configuration handle.
uint32_t local_address_info
Local info about the address.
Definition: transport.h:562
int GST_neighbours_handle_session_syn(const struct GNUNET_MessageHeader *message, const struct GNUNET_PeerIdentity *peer)
We received a &#39;SYN&#39; message from the other peer.
void GST_plugins_load(GNUNET_TRANSPORT_PluginReceiveCallback recv_cb, GNUNET_TRANSPORT_AddressNotification address_cb, GNUNET_TRANSPORT_SessionStart session_start_cb, GNUNET_TRANSPORT_SessionEnd session_end_cb)
Load and initialize all plugins.
struct GNUNET_TRANSPORT_PluginFunctions * plugin
Plugin for the session.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_shutdown(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run on shutdown, that is when a CTRL-C signal is received, or when GNUNET_SCHEDULER_shutdown() is being invoked.
Definition: scheduler.c:1331
struct GST_BlacklistCheck * GST_blacklist_test_allowed(const struct GNUNET_PeerIdentity *peer, const char *transport_name, GST_BlacklistTestContinuation cont, void *cont_cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Test if a peer/transport combination is blacklisted.
int16_t is_inbound
GNUNET_YES if this is an inbound connection, GNUNET_NO if this is an outbound connection, GNUNET_SYSERR if connections of this plugin are so fundamentally bidirectional that they have no &#39;initiator&#39; Value given in NBO.
Definition: transport.h:629
void GST_blacklist_abort_matching(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Abort blacklist if address and session match.
struct GNUNET_STATISTICS_Handle * GNUNET_STATISTICS_create(const char *subsystem, const struct GNUNET_CONFIGURATION_Handle *cfg)
Get handle for the statistics service.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT.
Definition: transport.h:122
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:39
int client_send(struct GNUNET_ATS_Session *s, struct HTTP_Message *msg)
uint32_t is_allowed
0 for the query, GNUNET_OK (allowed) or GNUNET_SYSERR (disallowed) for the response.
Definition: transport.h:597
static void handle_client_set_metric(void *cls, const struct TrafficMetricMessage *tm)
Set traffic metric to manipulate.
void GST_manipulation_stop()
Stop traffic manipulation.
int is_inbound
GNUNET_YES if this is an inbound connection, GNUNET_NO if this is an outbound connection, GNUNET_SYSERR if connections of this plugin are so fundamentally bidirectional that they have no &#39;initiator&#39;
int GST_neighbours_test_connected(const struct GNUNET_PeerIdentity *target)
Test if we&#39;re connected to the given peer.
struct GNUNET_PeerIdentity peer
Which peer should receive the message?
Definition: transport.h:308
struct GNUNET_PeerIdentity peer
Which peer is this connection for?
Definition: transport.h:654
enum GNUNET_TRANSPORT_SessionState state
New state of the session.
int GST_validation_handle_ping(const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr, const struct GNUNET_HELLO_Address *sender_address, struct GNUNET_ATS_Session *session)
We&#39;ve received a PING.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_QUOTA
Message exchanged between transport services to indicate that the sender should limit its transmissio...
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
struct GNUNET_BANDWIDTH_Value32NBO quota_out
Current outbound quota for this peer.
Definition: transport.h:135
void GST_hello_start(int friend_only, GST_HelloCallback cb, void *cb_cls)
Initialize the HELLO module.
GNUNET_SERVICE_MAIN("transport", GNUNET_SERVICE_OPTION_NONE, &run, &client_connect_cb, &client_disconnect_cb, NULL, GNUNET_MQ_hd_fixed_size(client_start, GNUNET_MESSAGE_TYPE_TRANSPORT_START, struct StartMessage, NULL), GNUNET_MQ_hd_var_size(client_hello, GNUNET_MESSAGE_TYPE_HELLO, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_var_size(client_send, GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, struct OutboundMessage, NULL), GNUNET_MQ_hd_var_size(client_address_to_string, GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING, struct AddressLookupMessage, NULL), GNUNET_MQ_hd_fixed_size(client_monitor_peers, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST, struct PeerMonitorMessage, NULL), GNUNET_MQ_hd_fixed_size(client_blacklist_init, GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_hd_fixed_size(client_blacklist_reply, GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY, struct BlacklistMessage, NULL), GNUNET_MQ_hd_fixed_size(client_set_metric, GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC, struct TrafficMetricMessage, NULL), GNUNET_MQ_hd_fixed_size(client_monitor_plugins, GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START, struct GNUNET_MessageHeader, NULL), GNUNET_MQ_handler_end())
Define "main" method using service macro.
static int free_blacklist_entry(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Free the given entry in the blacklist.
struct GNUNET_PeerIdentity target
Peer that was the target.
static struct GNUNET_SCHEDULER_TaskContext tc
Task context of the current task.
Definition: scheduler.c:423
GNUNET_TRANSPORT_DisconnectSessionFunction disconnect_session
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
struct GNUNET_TIME_AbsoluteNBO state_timeout
Timeout for the state this peer is in.
Definition: transport.h:557
static void transmit_address_to_client(void *cls, const char *buf, int res)
Take the given address and append it to the set of results sent back to the client.
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
int GST_neighbours_session_terminated(const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session)
A session was terminated.
static void notify_client_about_neighbour(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Function called for each of our connected neighbours.
static struct GNUNET_TRANSPORT_CoreHandle * transport
Transport service.
struct GNUNET_ATS_SchedulingHandle * GNUNET_ATS_scheduling_init(const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_ATS_AddressSuggestionCallback suggest_cb, void *suggest_cb_cls)
Initialize the ATS subsystem.
static struct GNUNET_TIME_Relative process_payload(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
We received some payload.
static void handle_send_transmit_continuation(void *cls, int success, size_t bytes_payload, size_t bytes_on_wire)
Function called after the transmission is done.
static int mark_match_down(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Mark the peer as down so we don&#39;t call the continuation context in the future.
void GNUNET_ATS_scheduling_done(struct GNUNET_ATS_SchedulingHandle *sh)
Client is done with ATS scheduling, release resources.
int client_start(struct Plugin *plugin)
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
#define GNUNET_MQ_hd_fixed_size(name, code, str, ctx)
Message from the transport service to the library containing information about a peer.
Definition: transport.h:537
#define GNUNET_CONSTANTS_LATENCY_WARN
After what amount of latency for a message do we print a warning?
static void blacklist_cfg_iter(void *cls, const char *section, const char *option, const char *value)
Function to iterate over options in the blacklisting section for a peer.
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
We do not know yet (client is fresh).
void GST_clients_broadcast_peer_notification(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout)
Broadcast the new active address to all clients monitoring the peer.
static void confirm_or_drop_neighbour(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int allowed)
Got the result about an existing connection from a new blacklister.
interfacing between transport and ATS service
static int check_client_hello(void *cls, const struct GNUNET_MessageHeader *message)
Client sent us a HELLO.
int GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
#define GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION
After how long do we expire an address in a HELLO that we just validated? This value is also used for...
static int numeric
Option -n.
static struct GNUNET_CONTAINER_MultiPeerMap * addresses
Hashmap to store addresses.
Definition: gnunet-ats.c:146
#define GNUNET_MESSAGE_TYPE_TRANSPORT_TRAFFIC_METRIC
Message containing traffic metrics for transport service.
const char * GNUNET_i2s_full(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
struct GNUNET_ATS_SessionKiller * next
Kept in a DLL.
static struct GNUNET_IDENTITY_Handle * id
Handle to identity service.
int GST_validation_handle_hello(const struct GNUNET_MessageHeader *hello)
We&#39;ve received a HELLO, check which addresses are new and trigger validation.
static void kill_session_task(void *cls)
Task to asynchronously terminate a session.
static void handle_client_monitor_plugins(void *cls, const struct GNUNET_MessageHeader *message)
Client asked to obtain information about all plugin connections.
Closure for test_connection_ok().
#define GNUNET_new(type)
Allocate a struct or union of the given type.
static struct TransportClient * clients_tail
Tail of linked list of all clients to this service.
struct GNUNET_PeerIdentity self
Identity we think we have.
Definition: transport.h:109
void GST_validation_stop()
Stop the validation subsystem.
struct GNUNET_PeerIdentity id
Which peers do we care about?
struct GNUNET_TRANSPORT_PluginFunctions * GST_plugins_printer_find(const char *name)
Obtain the plugin API based on a the stripped plugin name after the underscore.
static void do_blacklist_check(void *cls)
Perform next action in the blacklist check.
void GST_neighbours_keepalive(const struct GNUNET_PeerIdentity *neighbour, const struct GNUNET_MessageHeader *m)
Keep the connection to the given neighbour alive longer, we received a KEEPALIVE (or equivalent); sen...
struct GNUNET_SERVICE_Client * client
Handle to the client.
static struct TransportClient * clients_head
Head of linked list of all clients to this service.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
struct GNUNET_ATS_SchedulingHandle * GST_ats
ATS scheduling handle.
static void * client_connect_cb(void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
Called whenever a client connects.
void GNUNET_STATISTICS_destroy(struct GNUNET_STATISTICS_Handle *h, int sync_first)
Destroy a handle (free all state associated with it).
void GNUNET_STATISTICS_update(struct GNUNET_STATISTICS_Handle *handle, const char *name, int64_t delta, int make_persistent)
Set statistic value for the peer.
const struct GNUNET_HELLO_Address * address
Address used by the session.
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
Handle for the service.
uint32_t addrlen
Address length.
Definition: transport.h:572
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
void GNUNET_notification_context_add(struct GNUNET_NotificationContext *nc, struct GNUNET_MQ_Handle *mq)
Add a subscriber to the notification context.
Definition: nc.c:160
ATS performance characteristics for an address.
struct GST_BlacklistCheck * next
This is a linked list.
GNUNET_NetworkType
Types of networks (with separate quotas) we support.
Definition: gnunet_nt_lib.h:35
uint32_t num_msg_pending
Number of messages pending transmission for this session.
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
static struct TransportClient * sync_client
Plugin monitoring client we are currently syncing, NULL if all monitoring clients are in sync...
enum ClientType type
What type of client is this?
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE_RESPONSE
Response to a GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE message to measure latency in a regular...
It is a blacklist, query about allowed connections.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND
Request to TRANSPORT to transmit a message.
struct GNUNET_TIME_Absolute receive_delay
Until when does this plugin refuse to receive to manage staying within the inbound quota...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_CONNECT
Message from TRANSPORT notifying about a client that connected to us.
uint32_t value__
The actual value (bytes per second).
#define _(String)
GNU gettext support macro.
Definition: platform.h:184
static char * section
Name of the section.
Definition: gnunet-config.c:33
ClientType
What type of client is the struct TransportClient about?
#define MAX_PENDING
How many messages can we have pending for a given client process before we start to drop incoming mes...
static void plugin_env_session_end(void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Function that will be called whenever the plugin internally cleans up a session pointer and hence the...
int GST_neighbours_handle_session_syn_ack(const struct GNUNET_MessageHeader *message, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
We received a &#39;SESSION_SYN_ACK&#39; message from the other peer.
Handle to a client that is connected to a service.
Definition: service.c:250
static void read_blacklist_configuration(const struct GNUNET_CONFIGURATION_Handle *cfg, const struct GNUNET_PeerIdentity *my_id)
Read blacklist configuration.
struct GNUNET_ATS_Session * session
Session for GST_blacklist_abort_matching(), can be NULL.
void GST_neighbours_start(unsigned int max_fds)
Initialize the neighbours subsystem.
struct GNUNET_TIME_Relative GST_neighbours_calculate_receive_delay(const struct GNUNET_PeerIdentity *sender, ssize_t size, int *do_forward)
We have received a message from the given sender.
int GNUNET_HELLO_address_check_option(const struct GNUNET_HELLO_Address *address, enum GNUNET_HELLO_AddressInfo option)
Check if an address has a local option set.
Definition: address.c:39
static struct GST_BlacklistCheck * bc_head
Head of DLL of active blacklisting queries.
uint32_t state
State this peer is in as an enum GNUNET_TRANSPORT_PeerState
Definition: transport.h:567
#define GNUNET_MESSAGE_TYPE_HELLO_LEGACY
Previously used for HELLO messages used for communicating peer addresses.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END
Response to GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE_END terminating list of replies...
struct GNUNET_NT_InterfaceScanner * GST_is
Interface scanner determines our LAN address range(s).
Information about a plugin&#39;s session.
struct TransportClient * tc
Client that made the request.
Change in blacklisting (either request or notification, depending on which direction it is going)...
Definition: transport.h:585
uint16_t success
GNUNET_OK if the transmission succeeded, GNUNET_SYSERR if it failed (i.e.
Definition: transport.h:234
static void plugin_env_address_change_notification(void *cls, int add_remove, const struct GNUNET_HELLO_Address *address)
Function that will be called for each address the transport is aware that it might be reachable under...
int GNUNET_HELLO_address_cmp(const struct GNUNET_HELLO_Address *a1, const struct GNUNET_HELLO_Address *a2)
Compare two addresses.
Definition: address.c:130
#define GNUNET_MQ_msg_extra(mvar, esize, type)
Allocate an envelope, with extra space allocated after the space needed by the message struct...
Definition: gnunet_mq_lib.h:52
struct AddressToStringContext * next
This is a doubly-linked list.
uint32_t res
GNUNET_OK if the conversion succeeded, GNUNET_SYSERR if it failed
Definition: transport.h:334
int GST_validation_handle_pong(const struct GNUNET_PeerIdentity *sender, const struct GNUNET_MessageHeader *hdr)
We&#39;ve received a PONG.
uint16_t type
The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
struct TransportClient * tc
Client that made the request.
void GST_manipulation_set_metric(const struct TrafficMetricMessage *tm)
Set traffic metric to manipulate.
void GST_neighbours_handle_disconnect_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_MessageHeader *msg)
We received a disconnect message from the given peer, validate and process.
int first
Is this the first neighbour we&#39;re checking?
struct GNUNET_TIME_Relative GST_manipulation_recv(void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
Adapter function between transport plugins and transport receive function manipulation delays for nex...
enum State state
current state of profiling
uint32_t reserved
Reserved, always zero.
Definition: transport.h:159
void * cls
Closure for all of the callbacks.
void GST_neighbours_stop()
Cleanup the neighbours subsystem.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN_ACK
Transport SYN_ACK message exchanged between transport services to indicate that a SYN message was acc...
const struct GNUNET_HELLO_Address * GST_neighbour_get_current_address(const struct GNUNET_PeerIdentity *peer)
Obtain current address information for the given neighbour.
static char * value
Value of the record to add/remove.
int GST_neighbours_handle_session_ack(const struct GNUNET_MessageHeader *message, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
We received a &#39;ACK&#39; message from the other peer.
static int mark_peer_down(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Mark the peer as down so we don&#39;t call the continuation context in the future.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_REPLY
Reply from blacklisting client (answer to blacklist query).
void GST_manipulation_init()
Initialize traffic manipulation.
static void kill_session(const char *plugin_name, struct GNUNET_ATS_Session *session)
Force plugin to terminate session due to communication issue.
Session handle for connections.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
struct GNUNET_ATS_Session * session
Session to kill.
#define GNUNET_break_op(cond)
Use this for assertion violations caused by other peers (i.e.
This is an inbound address and cannot be used to initiate an outbound connection to another peer...
unsigned int GNUNET_MQ_get_length(struct GNUNET_MQ_Handle *mq)
Obtain the current length of the message queue.
Definition: mq.c:337
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE
Response to GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST request to iterate over all known addr...
static void handle_client_hello(void *cls, const struct GNUNET_MessageHeader *message)
Client sent us a HELLO.
struct GST_BlacklistCheck * bc
Blacklist check that we&#39;re currently performing (or NULL if we&#39;re performing one that has been cancel...
unsigned int GNUNET_notification_context_get_size(struct GNUNET_NotificationContext *nc)
Return active number of subscribers in this context.
Definition: nc.c:215
static void handle_client_blacklist_reply(void *cls, const struct BlacklistMessage *msg)
A blacklisting client has sent us reply.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_now(GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run as soon as possible.
Definition: scheduler.c:1296
neighbour manipulation API, allows manipulation of performance metrics (delay and towards ATS) ...
static enum GNUNET_NetworkType scope
Which network scope do we belong to?
Message from the library to the transport service asking for binary addresses known for a peer...
Definition: transport.h:470
struct GNUNET_PeerIdentity peer
The identity of the peer to look up.
Definition: transport.h:485
uint16_t plugin_name_len
Length of the plugin name in bytes, including 0-termination.
Definition: transport.h:664
const char * GNUNET_STRINGS_relative_time_to_string(struct GNUNET_TIME_Relative delta, int do_round)
Give relative time in human-readable fancy format.
Definition: strings.c:702
static struct PeerIterateResponseMessage * compose_address_iterate_response_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address)
Compose PeerIterateResponseMessage using the given peer and address.
uint32_t bytes_physical
Size of message sent over wire.
Definition: transport.h:245
uint32_t options
0: no options 1: The self field should be checked 2: this client is interested in payload traffic ...
Definition: transport.h:103
#define GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING_REPLY
Response to the address lookup request.
static char * option
Name of the option.
Definition: gnunet-config.c:38
static char buf[2048]
uint16_t plugin_address_len
Length of the plugin address in bytes.
Definition: transport.h:669
const char * transport_name
Name of the transport plugin enabling the communication using this address.
Message from the transport service to the library informing about neighbors.
Definition: transport.h:117
static int result
Global testing status.
static void plugin_env_session_start_bl_check_cont(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
Black list check result from blacklist check triggered when a plugin gave us a new session in plugin_...
uint32_t msgs_pending
Number of messages waiting transmission.
Definition: transport.h:634
struct GNUNET_TIME_RelativeNBO timeout
Allowed delay.
Definition: transport.h:302
struct GNUNET_TIME_Relative hello_expiration
Hello address expiration.
Message from the library to the transport service asking for binary addresses known for a peer...
Definition: transport.h:493
int down
Set to GNUNET_YES if the connection for target goes down and we thus must no longer send the GNUNET_M...
void GNUNET_SERVICE_client_mark_monitor(struct GNUNET_SERVICE_Client *c)
Set the &#39;monitor&#39; flag on this client.
Definition: service.c:2406
#define GNUNET_MESSAGE_TYPE_TRANSPORT_START
Message from the core saying that the transport server should start giving it messages.
void GST_neighbours_notify_data_recv(const struct GNUNET_HELLO_Address *address, const struct GNUNET_MessageHeader *message)
Track information about data we received from the given address (used to notify ATS about our utiliza...
void GST_ats_add_inbound_address(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_ATS_Properties *prop)
Notify ATS about a new inbound address.
void GST_clients_broadcast_disconnect(const struct GNUNET_PeerIdentity *peer)
Notify all clients about a disconnect, and cancel pending SEND_OK messages for this peer...
struct GNUNET_TIME_Absolute session_timeout
At what time will this session timeout (unless activity happens)?
const char * GST_plugins_a2s(const struct GNUNET_HELLO_Address *address)
Convert a given address to a human-readable format.
static void ats_request_address_change(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
Function called by ATS to notify the callee that the assigned bandwidth or address for a given peer w...
Internal representation of the hash map.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_ntoh(struct GNUNET_TIME_RelativeNBO a)
Convert relative time from network byte order.
Definition: time.c:641
int16_t numeric_only
Should the conversion use numeric IP addresses (otherwise a reverse DNS lookup is OK – if applicable...
Definition: transport.h:359
struct GNUNET_TRANSPORT_PluginFunctions * GST_plugins_find(const char *name)
Obtain the plugin API based on a plugin name.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_REQUEST
Request to monitor addresses used by a peer or all peers.
int all
GNUNET_YES if id should be ignored because we want all peers.
static struct AddressToStringContext * a2s_tail
Tail of linked list of all pending address iterations.
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2323
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_START
Request to start monitoring the connection state of plugins.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT
Message from TRANSPORT notifying about a client that disconnected from us.
static int res
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:118
void GST_manipulation_send(const struct GNUNET_PeerIdentity *target, const void *msg, size_t msg_size, struct GNUNET_TIME_Relative timeout, GST_NeighbourSendContinuation cont, void *cont_cls)
Adapter function between transport&#39;s send function and transport plugins.
struct GNUNET_TIME_AbsoluteNBO timeout
When will this transport plugin session time out?
Definition: transport.h:644
void GNUNET_NT_scanner_done(struct GNUNET_NT_InterfaceScanner *is)
Terminate interface scanner.
Definition: nt.c:433
unsigned long long uuid
Unique ID, for logging.
const struct GNUNET_CONFIGURATION_Handle * GST_cfg
Configuration handle.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_SYNC
Monitoring event notifying client that the initial iteration is now completed and we are in sync with...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_KEEPALIVE
Message send by a peer to notify the other to keep the session alive and measure latency in a regular...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING
Request to look addresses of peers in server.
void GST_blacklist_add_peer(const struct GNUNET_PeerIdentity *peer, const char *transport_name)
Add the given peer to the blacklist (for the given transport).
Message used to notify the transport service about a message to be transmitted to another peer...
Definition: transport.h:284
struct GNUNET_CRYPTO_EddsaPrivateKey GST_my_private_key
Our private key.
static void handle_client_send(void *cls, const struct OutboundMessage *obm)
Client asked for transmission to a peer.
Message from the transport service to the library asking to check if both processes agree about this ...
Definition: transport.h:91
CORE client without any handlers.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT.
Definition: transport.h:154
const char * GNUNET_TRANSPORT_ps2s(enum GNUNET_TRANSPORT_PeerState state)
Convert a transport state to a human readable string.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
struct GNUNET_HashCode key
The key used in the DHT.
static unsigned int size
Size of the "table".
Definition: peer.c:67
struct GNUNET_PeerIdentity peer
Which peer sent the message?
Definition: transport.h:208
struct GNUNET_MQ_Handle * mq
Message queue to the client.
Transport-level connection status update.
Definition: transport.h:609
struct GNUNET_TIME_Relative GST_receive_callback(void *cls, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, const struct GNUNET_MessageHeader *message)
Function called by the transport for each received message.
int call_receive_done
GNUNET_YES if we have to call receive_done for this client
static struct GNUNET_ATS_SessionKiller * sk_tail
Tail of DLL of asynchronous tasks to kill sessions.
int GNUNET_CRYPTO_eddsa_key_from_file(const char *filename, int do_create, struct GNUNET_CRYPTO_EddsaPrivateKey *pkey)
Create a new private key by reading it from a file.
Message from the transport service to the library informing about disconnects.
Definition: transport.h:149
struct GNUNET_TIME_RelativeNBO timeout
timeout to give up (for DNS resolution timeout mostly)
Definition: transport.h:369
struct GNUNET_NT_InterfaceScanner * GNUNET_NT_scanner_init(void)
Initialize the address characterization client handle.
Definition: nt.c:412
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static void unicast(struct TransportClient *tc, const struct GNUNET_MessageHeader *msg, int may_drop)
Queue the given message for transmission to the given client.
void GST_blacklist_test_cancel(struct GST_BlacklistCheck *bc)
Cancel a blacklist check.
static void handle_client_start(void *cls, const struct StartMessage *start)
Initialize a normal client.
uint32_t bytes_pending
Number of bytes waiting for transmission.
Definition: transport.h:639
uint16_t bytes_msg
Size of message sent.
Definition: transport.h:239
GST_BlacklistTestContinuation cont
Continuation to call with the result.
struct GNUNET_PeerIdentity peer
For which peer is this an address?
static void shutdown_task(void *cls)
Function called when the service shuts down.
32-bit bandwidth used for network exchange by GNUnet, in bytes per second.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK
Confirmation from TRANSPORT that message for transmission has been queued (and that the next message ...
static void client_disconnect_cb(void *cls, struct GNUNET_SERVICE_Client *client, void *app_ctx)
Called whenever a client is disconnected.
void GST_neighbours_switch_to_address(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
For the given peer, switch to this address.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_DISCONNECT
Transport DISCONNECT message exchanged between transport services to indicate that a connection shoul...
static struct GNUNET_CONTAINER_MultiPeerMap * blacklist
Hashmap of blacklisted peers.
static int check_client_address_to_string(void *cls, const struct AddressLookupMessage *alum)
Client asked to resolve an address.
#define GNUNET_TIME_UNIT_ZERO
Relative time zero.
struct GNUNET_ATS_ConnectivityHandle * GST_ats_connect
ATS connectivity handle.
void GNUNET_CRYPTO_eddsa_key_get_public(const struct GNUNET_CRYPTO_EddsaPrivateKey *priv, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Extract the public key for the given private key.
Definition: crypto_ecc.c:193
#define GNUNET_MESSAGE_TYPE_TRANSPORT_PONG
Transport PONG message.
struct GNUNET_NotificationContext * GNUNET_notification_context_create(unsigned int queue_length)
Create a new notification context.
Definition: nc.c:121
Message from the library to the transport service asking for converting a transport address to a huma...
Definition: transport.h:348
static int test_blacklisted(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Test if the given blacklist entry matches.
struct TransportClient * next
Kept in a DLL.
void GST_neighbours_force_disconnect(const struct GNUNET_PeerIdentity *target)
If we have an active connection to the given target, it must be shutdown.
enum GNUNET_NetworkType scope
Which network scope does the respective address belong to? This property does not change...
Allow multiple values with the same key.
struct AddressToStringContext * prev
This is a doubly-linked list.
Handle to a message queue.
Definition: mq.c:85
static struct GNUNET_PeerIdentity all_zeros
Peer identity that is all zeros, used as a way to indicate "all peers".
Information we need for an asynchronous session kill.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_SYN
Transport SYN message exchanged between transport services to indicate that a session should be marke...
uint32_t reserved
For alignment.
Definition: transport.h:547
struct GST_BlacklistCheck * prev
This is a linked list.
struct GNUNET_ATS_ConnectivityHandle * GNUNET_ATS_connectivity_init(const struct GNUNET_CONFIGURATION_Handle *cfg)
Initialize the ATS connectivity suggestion client handle.
Private ECC key encoded for transmission.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
int GNUNET_CRYPTO_eddsa_public_key_from_string(const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Convert a string representing a public key to a public key.
Definition: crypto_ecc.c:399
static struct AddressToStringContext * a2s_head
Head of linked list of all pending address iterations.
uint64_t session_id
Unique identifier for the session.
Definition: transport.h:659
const struct GNUNET_MessageHeader * GST_hello_get()
Obtain this peers HELLO message.
void GNUNET_notification_context_broadcast(struct GNUNET_NotificationContext *nc, const struct GNUNET_MessageHeader *msg, int can_drop)
Send a message to all subscribers of this context.
Definition: nc.c:189
static struct GNUNET_FS_PublishContext * pc
Handle to FS-publishing operation.
The identity of the host (wraps the signing key of the peer).
static void handle_client_monitor_peers(void *cls, const struct PeerMonitorMessage *msg)
Client asked to obtain information about a specific or all peers Process the request.
Message used to notify the transport API that it can send another message to the transport service...
Definition: transport.h:216
struct GNUNET_PeerIdentity peer
Which peer can send more now?
Definition: transport.h:251
struct TransportClient * bl_pos
Our current position in the blacklisters list.
struct GNUNET_SCHEDULER_Task * task
The kill task.
#define GNUNET_ALIGN
gcc-ism to force alignment; we use this to align char-arrays that may then be cast to &#39;struct&#39;s...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_INIT
Register a client that wants to do blacklisting.
static void connect_bl_check_cont(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session, int result)
Black list check result for try_connect call If connection to the peer is allowed request adddress an...
uint16_t session_state
An enum GNUNET_TRANSPORT_SessionState in NBO.
Definition: transport.h:619
configuration data
Definition: configuration.c:84
struct GNUNET_TIME_AbsoluteNBO delay
Until how long is this plugin currently blocked from reading?
Definition: transport.h:649
struct GNUNET_PEERINFO_Handle * GST_peerinfo
Handle to peerinfo service.
union TransportClient::@75 details
void GST_plugins_unload()
Unload all plugins.
const char * name
#define GNUNET_MESSAGE_TYPE_TRANSPORT_RECV
Message from TRANSPORT notifying about a message that was received.
uint32_t one_shot
One shot call or continous replies?
Definition: transport.h:480
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_duration(struct GNUNET_TIME_Absolute whence)
Get the duration of an operation as the difference of the current time and the given start time "henc...
Definition: time.c:375
struct GNUNET_SCHEDULER_Task * task
Current task performing the check.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_ADDRESS_TO_STRING.
Definition: transport.h:353
struct GNUNET_PeerIdentity peer
Who got disconnected?
Definition: transport.h:164
Closure for handle_send_transmit_continuation()
An address for communicating with a peer.
void GST_neighbours_handle_quota_message(const struct GNUNET_PeerIdentity *peer, const struct GNUNET_MessageHeader *msg)
We received a quota message from the given peer, validate and process.
struct GNUNET_HELLO_Address * GNUNET_HELLO_address_copy(const struct GNUNET_HELLO_Address *address)
Copy an address struct.
Definition: address.c:109
Automatic transport selection and outbound bandwidth determination.
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
Client connected to the transport service.
#define GNUNET_log(kind,...)
Entry in list of pending tasks.
Definition: scheduler.c:134
#define DEFAULT_MAX_FDS
What&#39;s the maximum number of sockets transport uses for validation and neighbors. ...
Definition: transport.h:52
static struct GNUNET_NotificationContext * plugin_nc
Notification context, to send updates on changes to active plugin connections.
int GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
void GNUNET_PEERINFO_disconnect(struct GNUNET_PEERINFO_Handle *h)
Disconnect from the peerinfo service.
Definition: peerinfo_api.c:156
struct GNUNET_PeerIdentity peer
Peer identity.
Definition: transport.h:552
void GST_ats_del_session(const struct GNUNET_HELLO_Address *address, struct GNUNET_ATS_Session *session)
Notify ATS that the session (but not the address) of a given address is no longer relevant...
void GST_neighbours_send(const struct GNUNET_PeerIdentity *target, const void *msg, size_t msg_size, struct GNUNET_TIME_Relative timeout, GST_NeighbourSendContinuation cont, void *cont_cls)
Transmit a message to the given target using the active connection.
struct GNUNET_MessageHeader header
Type is GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PEER_RESPONSE.
Definition: transport.h:542
#define GNUNET_MESSAGE_TYPE_TRANSPORT_SESSION_ACK
Transport ACK message exchanged between transport services to indicate that a SYN_ACK message was acc...
#define GNUNET_MESSAGE_TYPE_TRANSPORT_BLACKLIST_QUERY
Query to a blacklisting client (is this peer blacklisted)?
static void transmit_our_hello(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Transmit our HELLO message to the given (connected) neighbour.
enum GNUNET_TESTBED_UnderlayLinkModelType type
the type of this model
GNUNET_TRANSPORT_AddressPrettyPrinter address_pretty_printer
Function to pretty-print addresses.
Header for all communications.
#define TRANSPORT_BLACKLIST_HT_SIZE
Size of the blacklist hash map.
Time for absolute times used by GNUnet, in microseconds.
static struct GNUNET_FS_DirScanner * ds
Handle to the directory scanner (for recursive insertions).
void GNUNET_notification_context_destroy(struct GNUNET_NotificationContext *nc)
Destroy the context, force disconnect for all subscribers.
Definition: nc.c:137
uint16_t addrlen
Length of the (binary) address in bytes, in big-endian.
Definition: transport.h:364
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
struct TransportClient * tc
Context to use for the transmission.
int waiting_for_reply
Set to GNUNET_YES if we&#39;re currently waiting for a reply.
uint32_t pluginlen
Length of the plugin name.
Definition: transport.h:577
static void run(void *cls, const struct GNUNET_CONFIGURATION_Handle *c, struct GNUNET_SERVICE_Handle *service)
Initiate transport service.
struct GNUNET_PeerIdentity peer
Peer being checked.
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_RECV.
Definition: transport.h:203
#define GNUNET_MESSAGE_TYPE_HELLO
HELLO message with friend only flag used for communicating peer addresses.
static void handle_client_address_to_string(void *cls, const struct AddressLookupMessage *alum)
Client asked to resolve an address.
void GNUNET_SERVICE_client_disable_continue_warning(struct GNUNET_SERVICE_Client *c)
Disable the warning the server issues if a message is not acknowledged in a timely fashion...
Definition: service.c:2266
struct GNUNET_ATS_SessionKiller * prev
Kept in a DLL.
int GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
void GST_hello_modify_addresses(int addremove, const struct GNUNET_HELLO_Address *address)
Add or remove an address from this peer&#39;s HELLO message.
Handle to the ATS subsystem for connectivity management.
void GNUNET_ATS_connectivity_done(struct GNUNET_ATS_ConnectivityHandle *ch)
Client is done with ATS connectivity management, release resources.
void * cont_cls
Closure for cont.
Is the CORE service, we need to forward traffic to it.
Context for address to string operations.
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:657
static char * address
GNS address for this phone.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2242
void GST_validation_handle_address(const struct GNUNET_HELLO_Address *address)
Validate an individual address.
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
static char * plugin_name
Name of our plugin.
int GNUNET_CONTAINER_multipeermap_get_multiple(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map that match a particular key.
void GST_hello_stop()
Shutdown the HELLO module.
static void test_connection_ok(void *cls, const struct GNUNET_PeerIdentity *peer, const struct GNUNET_HELLO_Address *address, enum GNUNET_TRANSPORT_PeerState state, struct GNUNET_TIME_Absolute state_timeout, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
Test if an existing connection is still acceptable given a new blacklisting client.
#define GNUNET_malloc(size)
Wrapper around malloc.
static void process_hello_update(void *cls, const struct GNUNET_MessageHeader *hello)
My HELLO has changed.
static int check_client_send(void *cls, const struct OutboundMessage *obm)
Client asked for transmission to a peer.
Message used to notify the transport API about a message received from the network.
Definition: transport.h:198
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
struct GNUNET_CRYPTO_EddsaPublicKey public_key
struct GNUNET_MessageHeader * GNUNET_copy_message(const struct GNUNET_MessageHeader *msg)
Create a copy of the given message.
#define gettext_noop(String)
Definition: gettext.h:69
Category of last resort.
Definition: gnunet_nt_lib.h:40
struct GNUNET_MessageHeader header
Type will be GNUNET_MESSAGE_TYPE_TRANSPORT_MONITOR_PLUGIN_EVENT.
Definition: transport.h:614
void GST_ats_init()
Initialize ATS subsystem.
static struct GST_BlacklistCheck * bc_tail
Tail of DLL of active blacklisting queries.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972