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 #ifdef ENABLE_TTD
699  struct GNUNET_TIME_Relative delay;
700  const struct GNUNET_HELLO_Address *addr;
701 
704 
705  if (delay.rel_value_us > GNUNET_CONSTANTS_LATENCY_WARN.rel_value_us)
707  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
709  (unsigned int) bytes_payload,
710  (unsigned int) bytes_on_wire,
711  GNUNET_i2s (&stcc->target),
712  success,
713  (NULL != addr) ? addr->transport_name : "%");
714  else
716  "It took us %s to send %u/%u bytes to %s (%d, %s)\n",
718  (unsigned int) bytes_payload,
719  (unsigned int) bytes_on_wire,
720  GNUNET_i2s (&stcc->target),
721  success,
722  (NULL != addr) ? addr->transport_name : "%");
723 #endif
724 
725  if (GNUNET_NO == stcc->down)
726  {
727  /* Only send confirmation if we are still connected */
729  "Sending SEND_OK for transmission request %llu\n",
730  stcc->uuid);
731  send_ok_msg.header.size = htons (sizeof(send_ok_msg));
732  send_ok_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_OK);
733  send_ok_msg.bytes_msg = htons (bytes_payload);
734  send_ok_msg.bytes_physical = htonl (bytes_on_wire);
735  send_ok_msg.success = htons (success);
736  send_ok_msg.peer = stcc->target;
737  unicast (stcc->tc, &send_ok_msg.header, GNUNET_NO);
738  }
739  GNUNET_assert (
740  GNUNET_OK ==
741  GNUNET_CONTAINER_multipeermap_remove (active_stccs, &stcc->target, stcc));
742  GNUNET_free (stcc);
743 }
744 
745 
752 static int
753 check_client_send (void *cls, const struct OutboundMessage *obm)
754 {
755  uint16_t size;
756  const struct GNUNET_MessageHeader *obmm;
757 
758  size = ntohs (obm->header.size) - sizeof(struct OutboundMessage);
759  if (size < sizeof(struct GNUNET_MessageHeader))
760  {
761  GNUNET_break (0);
762  return GNUNET_SYSERR;
763  }
764  obmm = (const struct GNUNET_MessageHeader *) &obm[1];
765  if (size != ntohs (obmm->size))
766  {
767  GNUNET_break (0);
768  return GNUNET_SYSERR;
769  }
770  return GNUNET_OK;
771 }
772 
773 
780 static void
781 handle_client_send (void *cls, const struct OutboundMessage *obm)
782 {
783  static unsigned long long uuid_gen;
784  struct TransportClient *tc = cls;
785  const struct GNUNET_MessageHeader *obmm;
786  struct SendTransmitContinuationContext *stcc;
787 
788  obmm = (const struct GNUNET_MessageHeader *) &obm[1];
790  {
791  /* not connected, not allowed to send; can happen due to asynchronous operations */
793  "Could not send message to peer `%s': not connected\n",
794  GNUNET_i2s (&obm->peer));
796  GST_stats,
797  gettext_noop ("# bytes payload dropped (other peer was not connected)"),
798  ntohs (obmm->size),
799  GNUNET_NO);
801  return;
802  }
803  GNUNET_log (
805  "Received SEND request %llu for `%s' and first message of type %u and total size %u\n",
806  uuid_gen,
807  GNUNET_i2s (&obm->peer),
808  ntohs (obmm->type),
809  ntohs (obmm->size));
811 
813  stcc->target = obm->peer;
814  stcc->tc = tc;
816  stcc->uuid = uuid_gen++;
818  active_stccs,
819  &stcc->target,
820  stcc,
823  obmm,
824  ntohs (obmm->size),
827  stcc);
828 }
829 
830 
845 static void
846 transmit_address_to_client (void *cls, const char *buf, int res)
847 {
848  struct AddressToStringContext *actx = cls;
849  struct GNUNET_MQ_Envelope *env;
850  struct AddressToStringResultMessage *atsm;
851  size_t slen;
852 
853  GNUNET_assert ((GNUNET_OK == res) || (GNUNET_SYSERR == res));
854  if (NULL == actx->tc)
855  return;
856  if (NULL == buf)
857  {
858  env = GNUNET_MQ_msg (atsm,
860  if (GNUNET_OK == res)
861  {
862  /* this was the last call, transmit */
863  atsm->res = htonl (GNUNET_OK);
864  atsm->addr_len = htonl (0);
865  GNUNET_MQ_send (actx->tc->mq, env);
866  GNUNET_CONTAINER_DLL_remove (a2s_head, a2s_tail, actx);
867  GNUNET_free (actx);
868  return;
869  }
870  if (GNUNET_SYSERR == res)
871  {
872  /* address conversion failed, but there will be more callbacks */
873  atsm->res = htonl (GNUNET_SYSERR);
874  atsm->addr_len = htonl (0);
875  GNUNET_MQ_send (actx->tc->mq, env);
876  return;
877  }
878  }
879  GNUNET_assert (GNUNET_OK == res);
880  /* successful conversion, append*/
881  slen = strlen (buf) + 1;
882  env =
883  GNUNET_MQ_msg_extra (atsm,
884  slen,
886  atsm->res = htonl (GNUNET_YES);
887  atsm->addr_len = htonl (slen);
888  GNUNET_memcpy (&atsm[1], buf, slen);
889  GNUNET_MQ_send (actx->tc->mq, env);
890 }
891 
892 
900 static int
902  const struct AddressLookupMessage *alum)
903 {
904  const char *plugin_name;
905  const char *address;
906  uint32_t address_len;
907  uint16_t size;
908 
909  size = ntohs (alum->header.size);
910  address_len = ntohs (alum->addrlen);
911  if (size <= sizeof(struct AddressLookupMessage) + address_len)
912  {
913  GNUNET_break (0);
914  return GNUNET_SYSERR;
915  }
916  address = (const char *) &alum[1];
917  plugin_name = (const char *) &address[address_len];
918  if ('\0' != plugin_name[size - sizeof(struct AddressLookupMessage)
919  - address_len - 1])
920  {
921  GNUNET_break (0);
922  return GNUNET_SYSERR;
923  }
924  return GNUNET_OK;
925 }
926 
927 
934 static void
936  const struct AddressLookupMessage *alum)
937 {
938  struct TransportClient *tc = cls;
940  const char *plugin_name;
941  const char *address;
942  uint32_t address_len;
943  struct AddressToStringContext *actx;
944  struct GNUNET_MQ_Envelope *env;
945  struct AddressToStringResultMessage *atsm;
946  struct GNUNET_TIME_Relative rtimeout;
947  int32_t numeric;
948 
949  address_len = ntohs (alum->addrlen);
950  address = (const char *) &alum[1];
951  plugin_name = (const char *) &address[address_len];
952  rtimeout = GNUNET_TIME_relative_ntoh (alum->timeout);
953  numeric = ntohs (alum->numeric_only);
954  papi = GST_plugins_printer_find (plugin_name);
955  if (NULL == papi)
956  {
958  "Failed to find plugin `%s'\n",
959  plugin_name);
960  env = GNUNET_MQ_msg (atsm,
962  atsm->res = htonl (GNUNET_SYSERR);
963  atsm->addr_len = htonl (0);
964  GNUNET_MQ_send (tc->mq, env);
965  env = GNUNET_MQ_msg (atsm,
967  atsm->res = htonl (GNUNET_OK);
968  atsm->addr_len = htonl (0);
969  GNUNET_MQ_send (tc->mq, env);
970  return;
971  }
972  actx = GNUNET_new (struct AddressToStringContext);
973  actx->tc = tc;
974  GNUNET_CONTAINER_DLL_insert (a2s_head, a2s_tail, actx);
977  "Pretty-printing address of %u bytes using plugin `%s'\n",
978  address_len,
979  plugin_name);
980  papi->address_pretty_printer (papi->cls,
981  plugin_name,
982  address,
983  address_len,
984  numeric,
985  rtimeout,
987  actx);
988 }
989 
990 
998 static struct PeerIterateResponseMessage *
1000  const struct GNUNET_PeerIdentity *peer,
1001  const struct GNUNET_HELLO_Address *address)
1002 {
1004  size_t size;
1005  size_t tlen;
1006  size_t alen;
1007  char *addr;
1008 
1009  GNUNET_assert (NULL != peer);
1010  if (NULL != address)
1011  {
1012  tlen = strlen (address->transport_name) + 1;
1013  alen = address->address_length;
1014  }
1015  else
1016  {
1017  tlen = 0;
1018  alen = 0;
1019  }
1020  size = (sizeof(struct PeerIterateResponseMessage) + alen + tlen);
1021  msg = GNUNET_malloc (size);
1022  msg->header.size = htons (size);
1023  msg->header.type =
1025  msg->reserved = htonl (0);
1026  msg->peer = *peer;
1027  msg->addrlen = htonl (alen);
1028  msg->pluginlen = htonl (tlen);
1029 
1030  if (NULL != address)
1031  {
1032  msg->local_address_info = htonl ((uint32_t) address->local_info);
1033  addr = (char *) &msg[1];
1034  GNUNET_memcpy (addr, address->address, alen);
1035  GNUNET_memcpy (&addr[alen], address->transport_name, tlen);
1036  }
1037  return msg;
1038 }
1039 
1040 
1045 struct IterationContext
1046 {
1051 
1056 
1060  int all;
1061 };
1062 
1063 
1075 static void
1077  const struct GNUNET_PeerIdentity *peer,
1078  const struct GNUNET_HELLO_Address *address,
1080  struct GNUNET_TIME_Absolute state_timeout,
1081  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
1082  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
1083 {
1084  struct IterationContext *pc = cls;
1085  struct GNUNET_MQ_Envelope *env;
1087 
1088  if ((GNUNET_YES != pc->all) && (0 != memcmp (peer, &pc->id, sizeof(pc->id))))
1089  return;
1091  "Sending information about `%s' using address `%s' in state `%s'\n",
1092  GNUNET_i2s (peer),
1093  (NULL != address) ? GST_plugins_a2s (address) : "<none>",
1094  GNUNET_TRANSPORT_ps2s (state));
1095  msg = compose_address_iterate_response_message (peer, address);
1096  msg->state = htonl (state);
1097  msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
1098  env = GNUNET_MQ_msg_copy (&msg->header);
1099  GNUNET_free (msg);
1100  GNUNET_MQ_send (pc->tc->mq, env);
1101 }
1102 
1103 
1111 static void
1113 {
1114  struct TransportClient *tc = cls;
1115  struct IterationContext pc;
1116 
1117  if (CT_NONE != tc->type)
1118  {
1119  GNUNET_break (0);
1121  return;
1122  }
1125 
1126  /* Send initial list */
1127  pc.tc = tc;
1128  if (0 == memcmp (&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1129  {
1130  /* iterate over all neighbours */
1131  pc.all = GNUNET_YES;
1132  pc.id = msg->peer;
1133  }
1134  else
1135  {
1136  /* just return one neighbour */
1137  pc.all = GNUNET_NO;
1138  pc.id = msg->peer;
1139  }
1141 
1142  if (GNUNET_YES != ntohl (msg->one_shot))
1143  {
1144  tc->details.monitor_peer = msg->peer;
1145  tc->type = CT_MONITOR;
1146  if (0 !=
1147  memcmp (&msg->peer, &all_zeros, sizeof(struct GNUNET_PeerIdentity)))
1149  "Client %p started monitoring of the peer `%s'\n",
1150  tc,
1151  GNUNET_i2s (&msg->peer));
1152  else
1154  "Client %p started monitoring all peers\n",
1155  tc);
1156  }
1157  else
1158  {
1159  struct GNUNET_MessageHeader *msg;
1160  struct GNUNET_MQ_Envelope *env;
1161 
1162  env =
1163  GNUNET_MQ_msg (msg,
1165  GNUNET_MQ_send (tc->mq, env);
1166  }
1167 }
1168 
1169 
1182 static void
1184  struct GNUNET_ATS_Session *session,
1185  const struct GNUNET_TRANSPORT_SessionInfo *info)
1186 {
1187  struct GNUNET_MQ_Envelope *env;
1189  struct GNUNET_MessageHeader *sync;
1190  size_t size;
1191  size_t slen;
1192  uint16_t alen;
1193  char *name;
1194  char *addr;
1195 
1196  if (0 == GNUNET_notification_context_get_size (plugin_nc))
1197  {
1198  GST_plugins_monitor_subscribe (NULL, NULL);
1199  return;
1200  }
1201  if ((NULL == info) && (NULL == session))
1202  {
1203  /* end of initial iteration */
1204  if (NULL != sync_client)
1205  {
1206  env =
1208  GNUNET_MQ_send (sync_client->mq, env);
1209  sync_client = NULL;
1210  }
1211  return;
1212  }
1213  GNUNET_assert (NULL != info);
1215  "Plugin event for peer %s on transport %s\n",
1216  GNUNET_i2s (&info->address->peer),
1217  info->address->transport_name);
1218  slen = strlen (info->address->transport_name) + 1;
1219  alen = info->address->address_length;
1220  size = sizeof(struct TransportPluginMonitorMessage) + slen + alen;
1221  if (size > UINT16_MAX)
1222  {
1223  GNUNET_break (0);
1224  return;
1225  }
1226  msg = GNUNET_malloc (size);
1227  msg->header.size = htons (size);
1229  msg->session_state = htons ((uint16_t) info->state);
1230  msg->is_inbound = htons ((int16_t) info->is_inbound);
1231  msg->msgs_pending = htonl (info->num_msg_pending);
1232  msg->bytes_pending = htonl (info->num_bytes_pending);
1235  msg->peer = info->address->peer;
1236  msg->session_id = (uint64_t) (intptr_t) session;
1237  msg->plugin_name_len = htons (slen);
1238  msg->plugin_address_len = htons (alen);
1239  name = (char *) &msg[1];
1240  GNUNET_memcpy (name, info->address->transport_name, slen);
1241  addr = &name[slen];
1242  GNUNET_memcpy (addr, info->address->address, alen);
1243  if (NULL != sync_client)
1244  {
1245  struct GNUNET_MQ_Envelope *env;
1246 
1247  env = GNUNET_MQ_msg_copy (&msg->header);
1248  GNUNET_MQ_send (sync_client->mq, env);
1249  }
1250  else
1251  {
1253  }
1254  GNUNET_free (msg);
1255 }
1256 
1257 
1264 static void
1266  const struct GNUNET_MessageHeader *message)
1267 {
1268  struct TransportClient *tc = cls;
1269 
1272  GNUNET_notification_context_add (plugin_nc, tc->mq);
1273  GNUNET_assert (NULL == sync_client);
1274  sync_client = tc;
1276 }
1277 
1278 
1285 void
1286 GST_clients_broadcast (const struct GNUNET_MessageHeader *msg, int may_drop)
1287 {
1288  int done;
1289 
1291  "Asked to broadcast message of type %u with %u bytes\n",
1292  (unsigned int) ntohs (msg->type),
1293  (unsigned int) ntohs (msg->size));
1294  done = GNUNET_NO;
1295  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1296  {
1297  if (CT_NONE == tc->type)
1298  continue; /* client not yet ready */
1299  if ((GNUNET_YES == may_drop) && (CT_CORE != tc->type))
1300  continue; /* skip, this client does not care about payload */
1301  unicast (tc, msg, may_drop);
1302  done = GNUNET_YES;
1303  }
1304  if (GNUNET_NO == done)
1306  "Message of type %u not delivered, is CORE service up?\n",
1307  ntohs (msg->type));
1308 }
1309 
1310 
1319 void
1321  const struct GNUNET_PeerIdentity *peer,
1322  const struct GNUNET_HELLO_Address *address,
1324  struct GNUNET_TIME_Absolute state_timeout)
1325 {
1326  struct GNUNET_MQ_Envelope *env;
1328 
1329  msg = compose_address_iterate_response_message (peer, address);
1330  msg->state = htonl (state);
1331  msg->state_timeout = GNUNET_TIME_absolute_hton (state_timeout);
1332  for (struct TransportClient *tc = clients_head; NULL != tc; tc = tc->next)
1333  {
1334  if (CT_MONITOR != tc->type)
1335  continue;
1336  if ((0 == memcmp (&tc->details.monitor_peer,
1337  &all_zeros,
1338  sizeof(struct GNUNET_PeerIdentity))) ||
1339  (0 == memcmp (&tc->details.monitor_peer,
1340  peer,
1341  sizeof(struct GNUNET_PeerIdentity))))
1342  {
1343  env = GNUNET_MQ_msg_copy (&msg->header);
1344  GNUNET_MQ_send (tc->mq, env);
1345  }
1346  }
1347  GNUNET_free (msg);
1348 }
1349 
1350 
1360 static int
1361 mark_peer_down (void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
1362 {
1363  struct SendTransmitContinuationContext *stcc = value;
1364 
1365  stcc->down = GNUNET_YES;
1366  return GNUNET_OK;
1367 }
1368 
1369 
1376 void
1378 {
1379  struct DisconnectInfoMessage disconnect_msg;
1380 
1382  peer,
1383  &mark_peer_down,
1384  NULL);
1385  disconnect_msg.header.size = htons (sizeof(struct DisconnectInfoMessage));
1386  disconnect_msg.header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_DISCONNECT);
1387  disconnect_msg.reserved = htonl (0);
1388  disconnect_msg.peer = *peer;
1389  GST_clients_broadcast (&disconnect_msg.header, GNUNET_NO);
1390 }
1391 
1392 
1404 static void
1406  const struct GNUNET_PeerIdentity *peer,
1407  const struct GNUNET_HELLO_Address *address,
1409  struct GNUNET_TIME_Absolute state_timeout,
1410  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
1411  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
1412 {
1413  const struct GNUNET_MessageHeader *hello = cls;
1414 
1415  if (0 == memcmp (peer, &GST_my_identity, sizeof(struct GNUNET_PeerIdentity)))
1416  return; /* not to ourselves */
1418  return;
1419 
1420  GST_neighbours_send (peer,
1421  hello,
1422  ntohs (hello->size),
1424  NULL,
1425  NULL);
1426 }
1427 
1428 
1435 static void
1436 process_hello_update (void *cls, const struct GNUNET_MessageHeader *hello)
1437 {
1438  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to clients\n");
1440  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Broadcasting HELLO to neighbours\n");
1441  GST_neighbours_iterate (&transmit_our_hello, (void *) hello);
1442 }
1443 
1444 
1455 static struct GNUNET_TIME_Relative
1457  struct GNUNET_ATS_Session *session,
1458  const struct GNUNET_MessageHeader *message)
1459 {
1460  struct GNUNET_TIME_Relative ret;
1461  int do_forward;
1462  struct InboundMessage *im;
1463  size_t msg_size = ntohs (message->size);
1464  size_t size = sizeof(struct InboundMessage) + msg_size;
1465  char buf[size] GNUNET_ALIGN;
1466 
1467  do_forward = GNUNET_SYSERR;
1468  ret = GST_neighbours_calculate_receive_delay (&address->peer,
1469  msg_size,
1470  &do_forward);
1471  if (! GST_neighbours_test_connected (&address->peer))
1472  {
1474  "Discarded %u bytes type %u payload from peer `%s'\n",
1475  (unsigned int) msg_size,
1476  ntohs (message->type),
1477  GNUNET_i2s (&address->peer));
1479  GST_stats,
1480  gettext_noop ("# bytes payload discarded due to not connected peer"),
1481  msg_size,
1482  GNUNET_NO);
1483  return ret;
1484  }
1485 
1486  if (GNUNET_YES != do_forward)
1487  return ret;
1488  im = (struct InboundMessage *) buf;
1489  im->header.size = htons (size);
1491  im->peer = address->peer;
1492  GNUNET_memcpy (&im[1], message, ntohs (message->size));
1494  return ret;
1495 }
1496 
1497 
1503 static void
1505 {
1506  struct GNUNET_ATS_SessionKiller *sk = cls;
1507 
1508  sk->task = NULL;
1509  GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
1510  sk->plugin->disconnect_session (sk->plugin->cls, sk->session);
1511  GNUNET_free (sk);
1512 }
1513 
1514 
1522 static void
1523 kill_session (const char *plugin_name, struct GNUNET_ATS_Session *session)
1524 {
1526  struct GNUNET_ATS_SessionKiller *sk;
1527 
1528  for (sk = sk_head; NULL != sk; sk = sk->next)
1529  if (sk->session == session)
1530  return;
1531  plugin = GST_plugins_find (plugin_name);
1532  if (NULL == plugin)
1533  {
1534  GNUNET_break (0);
1535  return;
1536  }
1537  /* need to issue disconnect asynchronously */
1538  sk = GNUNET_new (struct GNUNET_ATS_SessionKiller);
1539  sk->session = session;
1540  sk->plugin = plugin;
1542  GNUNET_CONTAINER_DLL_insert (sk_head, sk_tail, sk);
1543 }
1544 
1545 
1556 static void
1558  const struct GNUNET_PeerIdentity *peer,
1559  const struct GNUNET_HELLO_Address *address,
1560  struct GNUNET_ATS_Session *session,
1561  int result)
1562 {
1563  struct GNUNET_MessageHeader *msg = cls;
1564 
1565  if (GNUNET_OK == result)
1566  {
1567  /* Blacklist allows to speak to this peer, forward SYN to neighbours */
1569  "Received SYN message from peer `%s' at `%s'\n",
1570  GNUNET_i2s (peer),
1571  GST_plugins_a2s (address));
1572  if (GNUNET_OK != GST_neighbours_handle_session_syn (msg, peer))
1573  {
1574  GST_blacklist_abort_matching (address, session);
1575  kill_session (address->transport_name, session);
1576  }
1577  GNUNET_free (msg);
1578  return;
1579  }
1580  GNUNET_free (msg);
1581  if (GNUNET_SYSERR == result)
1582  return; /* check was aborted, session destroyed */
1583  /* Blacklist denies to speak to this peer */
1585  "Discarding SYN message from `%s' due to denied blacklist check\n",
1586  GNUNET_i2s (peer));
1587  kill_session (address->transport_name, session);
1588 }
1589 
1590 
1604 struct GNUNET_TIME_Relative
1606  const struct GNUNET_HELLO_Address *address,
1607  struct GNUNET_ATS_Session *session,
1608  const struct GNUNET_MessageHeader *message)
1609 {
1610  const char *plugin_name = cls;
1611  struct GNUNET_TIME_Relative ret;
1612  uint16_t type;
1613 
1614  ret = GNUNET_TIME_UNIT_ZERO;
1615  if (NULL == message)
1616  goto end;
1617  type = ntohs (message->type);
1619  "Received message with type %u from peer `%s' at %s\n",
1620  type,
1621  GNUNET_i2s (&address->peer),
1622  GST_plugins_a2s (address));
1623 
1624  GNUNET_STATISTICS_update (GST_stats,
1625  gettext_noop ("# bytes total received"),
1626  ntohs (message->size),
1627  GNUNET_NO);
1628  GST_neighbours_notify_data_recv (address, message);
1629  switch (type)
1630  {
1632  /* Legacy HELLO message, discard */
1633  return ret;
1634 
1636  if (GNUNET_OK != GST_validation_handle_hello (message))
1637  {
1638  GNUNET_break_op (0);
1639  GST_blacklist_abort_matching (address, session);
1640  }
1641  return ret;
1642 
1645  "Processing PING from `%s'\n",
1646  GST_plugins_a2s (address));
1647  if (GNUNET_OK !=
1648  GST_validation_handle_ping (&address->peer, message, address, session))
1649  {
1650  GST_blacklist_abort_matching (address, session);
1651  kill_session (plugin_name, session);
1652  }
1653  break;
1654 
1657  "Processing PONG from `%s'\n",
1658  GST_plugins_a2s (address));
1659  if (GNUNET_OK != GST_validation_handle_pong (&address->peer, message))
1660  {
1661  GNUNET_break_op (0);
1662  GST_blacklist_abort_matching (address, session);
1663  kill_session (plugin_name, session);
1664  }
1665  break;
1666 
1668  /* Do blacklist check if communication with this peer is allowed */
1669  (void) GST_blacklist_test_allowed (&address->peer,
1670  NULL,
1672  GNUNET_copy_message (message),
1673  address,
1674  session);
1675  break;
1676 
1678  if (GNUNET_OK !=
1679  GST_neighbours_handle_session_syn_ack (message, address, session))
1680  {
1681  GST_blacklist_abort_matching (address, session);
1682  kill_session (plugin_name, session);
1683  }
1684  break;
1685 
1687  if (GNUNET_OK !=
1688  GST_neighbours_handle_session_ack (message, address, session))
1689  {
1690  GNUNET_break_op (0);
1691  GST_blacklist_abort_matching (address, session);
1692  kill_session (plugin_name, session);
1693  }
1694  break;
1695 
1697  GST_neighbours_handle_disconnect_message (&address->peer, message);
1698  break;
1699 
1701  GST_neighbours_handle_quota_message (&address->peer, message);
1702  break;
1703 
1705  GST_neighbours_keepalive (&address->peer, message);
1706  break;
1707 
1709  GST_neighbours_keepalive_response (&address->peer, message);
1710  break;
1711 
1712  default:
1713  /* should be payload */
1714  GNUNET_STATISTICS_update (GST_stats,
1715  gettext_noop ("# bytes payload received"),
1716  ntohs (message->size),
1717  GNUNET_NO);
1718  ret = process_payload (address, session, message);
1719  break;
1720  }
1721 end:
1723  "Allowing receive from peer %s to continue in %s\n",
1724  GNUNET_i2s (&address->peer),
1726  return ret;
1727 }
1728 
1729 
1739 static void
1741  void *cls,
1742  int add_remove,
1743  const struct GNUNET_HELLO_Address *address)
1744 {
1745  static int addresses = 0;
1746 
1747  if (GNUNET_YES == add_remove)
1748  {
1749  addresses++;
1750  GNUNET_STATISTICS_update (GST_stats, "# transport addresses", 1, GNUNET_NO);
1751  }
1752  else if (GNUNET_NO == add_remove)
1753  {
1754  if (0 == addresses)
1755  {
1756  GNUNET_break (0);
1757  }
1758  else
1759  {
1760  addresses--;
1761  GNUNET_STATISTICS_update (GST_stats,
1762  "# transport addresses",
1763  -1,
1764  GNUNET_NO);
1765  }
1766  }
1768  "Transport now has %u addresses to communicate\n",
1769  addresses);
1770  GST_hello_modify_addresses (add_remove, address);
1771 }
1772 
1773 
1787 static void
1789  const struct GNUNET_HELLO_Address *address,
1790  struct GNUNET_ATS_Session *session)
1791 {
1792  struct GNUNET_ATS_SessionKiller *sk;
1793 
1794  if (NULL == address)
1795  {
1796  GNUNET_break (0);
1797  return;
1798  }
1799  if (NULL == session)
1800  {
1801  GNUNET_break (0);
1802  return;
1803  }
1804  GNUNET_assert (strlen (address->transport_name) > 0);
1805 
1806  GNUNET_log (
1808  "Notification from plugin about terminated session %p from peer `%s' address `%s'\n",
1809  session,
1810  GNUNET_i2s (&address->peer),
1811  GST_plugins_a2s (address));
1812 
1813  GST_neighbours_session_terminated (&address->peer, session);
1814  GST_ats_del_session (address, session);
1815  GST_blacklist_abort_matching (address, session);
1816 
1817  for (sk = sk_head; NULL != sk; sk = sk->next)
1818  {
1819  if (sk->session == session)
1820  {
1821  GNUNET_CONTAINER_DLL_remove (sk_head, sk_tail, sk);
1823  GNUNET_free (sk);
1824  break;
1825  }
1826  }
1827 }
1828 
1829 
1841 static void
1843  void *cls,
1844  const struct GNUNET_PeerIdentity *peer,
1845  const struct GNUNET_HELLO_Address *address,
1846  struct GNUNET_ATS_Session *session,
1847  int result)
1848 {
1849  if (GNUNET_OK != result)
1850  {
1851  kill_session (address->transport_name, session);
1852  return;
1853  }
1854  if (GNUNET_YES !=
1857  {
1859  "Informing verifier about inbound session's address `%s'\n",
1860  GST_plugins_a2s (address));
1862  }
1863 }
1864 
1865 
1874 static void
1876  const struct GNUNET_HELLO_Address *address,
1877  struct GNUNET_ATS_Session *session,
1879 {
1880  struct GNUNET_ATS_Properties prop;
1881 
1882  if (NULL == address)
1883  {
1884  GNUNET_break (0);
1885  return;
1886  }
1887  if (NULL == session)
1888  {
1889  GNUNET_break (0);
1890  return;
1891  }
1892  GNUNET_log (
1894  "Notification from plugin `%s' about new session from peer `%s' address `%s'\n",
1895  address->transport_name,
1896  GNUNET_i2s (&address->peer),
1897  GST_plugins_a2s (address));
1898  if (GNUNET_YES ==
1901  {
1902  /* inbound is always new, but outbound MAY already be known, but
1903  for example for UNIX, we have symmetric connections and thus we
1904  may not know the address yet; add if necessary! */
1905  /* FIXME: maybe change API here so we just pass scope? */
1906  memset (&prop, 0, sizeof(prop));
1908  prop.scope = scope;
1909  GST_ats_add_inbound_address (address, session, &prop);
1910  }
1911  /* Do blacklist check if communication with this peer is allowed */
1912  (void) GST_blacklist_test_allowed (&address->peer,
1913  address->transport_name,
1915  NULL,
1916  address,
1917  session);
1918 }
1919 
1920 
1939 static void
1941  const struct GNUNET_PeerIdentity *peer,
1942  const struct GNUNET_HELLO_Address *address,
1943  struct GNUNET_ATS_Session *session,
1944  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out,
1945  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in)
1946 {
1947  uint32_t bw_in = ntohl (bandwidth_in.value__);
1948  uint32_t bw_out = ntohl (bandwidth_out.value__);
1949 
1950  if (NULL == peer)
1951  {
1952  /* ATS service died, all suggestions become invalid!
1953  (but we'll keep using the allocations for a little
1954  while, to keep going while ATS restarts) */
1955  /* FIXME: We should drop all
1956  connections now, as ATS won't explicitly tell
1957  us and be unaware of ongoing resource allocations! */
1958  return;
1959  }
1960  /* ATS tells me to disconnect from peer */
1961  if ((0 == bw_in) && (0 == bw_out))
1962  {
1964  "ATS tells me to disconnect from peer `%s'\n",
1965  GNUNET_i2s (peer));
1967  return;
1968  }
1969  GNUNET_assert (NULL != address);
1970  GNUNET_STATISTICS_update (GST_stats,
1971  "# ATS suggestions received",
1972  1,
1973  GNUNET_NO);
1975  session,
1976  bandwidth_in,
1977  bandwidth_out);
1978 }
1979 
1980 
1985 {
1989  int first;
1990 
1995 };
1996 
1997 
2009 static void
2011  const struct GNUNET_PeerIdentity *peer,
2012  const struct GNUNET_HELLO_Address *address,
2013  struct GNUNET_ATS_Session *session,
2014  int allowed)
2015 {
2016  if (GNUNET_OK == allowed)
2017  return; /* we're done */
2018  GNUNET_STATISTICS_update (GST_stats,
2019  gettext_noop ("# disconnects due to blacklist"),
2020  1,
2021  GNUNET_NO);
2023 }
2024 
2025 
2038 static void
2040  const struct GNUNET_PeerIdentity *peer,
2041  const struct GNUNET_HELLO_Address *address,
2043  struct GNUNET_TIME_Absolute state_timeout,
2044  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in,
2045  struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out)
2046 {
2047  struct TestConnectionContext *tcc = cls;
2048  struct GST_BlacklistCheck *bc;
2049 
2050  bc = GNUNET_new (struct GST_BlacklistCheck);
2051  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2052  bc->peer = *peer;
2053  bc->address = GNUNET_HELLO_address_copy (address);
2055  bc->cont_cls = NULL;
2056  bc->bl_pos = tcc->tc;
2057  if (GNUNET_YES == tcc->first)
2058  {
2059  /* all would wait for the same client, no need to
2060  * create more than just the first task right now */
2062  tcc->first = GNUNET_NO;
2063  }
2064 }
2065 
2066 
2075 static void
2077  const struct GNUNET_MessageHeader *message)
2078 {
2079  struct TransportClient *tc = cls;
2080  struct TestConnectionContext tcc;
2081 
2082  if (CT_NONE != tc->type)
2083  {
2084  GNUNET_break (0);
2086  return;
2087  }
2089  tc->type = CT_BLACKLIST;
2090  tc->details.blacklist.call_receive_done = GNUNET_YES;
2091  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "New blacklist client %p\n", tc);
2092  /* confirm that all existing connections are OK! */
2093  tcc.tc = tc;
2094  tcc.first = GNUNET_YES;
2096 }
2097 
2098 
2107 static int
2109  const struct GNUNET_PeerIdentity *key,
2110  void *value)
2111 {
2112  char *be = value;
2113 
2114  GNUNET_free (be);
2115  return GNUNET_OK;
2116 }
2117 
2118 
2125 static void
2126 handle_client_set_metric (void *cls, const struct TrafficMetricMessage *tm)
2127 {
2128  struct TransportClient *tc = cls;
2129 
2132 }
2133 
2134 
2141 static void
2142 shutdown_task (void *cls)
2143 {
2144  struct AddressToStringContext *cur;
2145 
2147  GST_plugins_unload ();
2149  GST_ats_done ();
2150  GNUNET_ATS_scheduling_done (GST_ats);
2151  GST_ats = NULL;
2152  GNUNET_ATS_connectivity_done (GST_ats_connect);
2153  GST_ats_connect = NULL;
2154  GNUNET_NT_scanner_done (GST_is);
2155  GST_is = NULL;
2156  while (NULL != (cur = a2s_head))
2157  {
2158  GNUNET_CONTAINER_DLL_remove (a2s_head, a2s_tail, cur);
2159  GNUNET_free (cur);
2160  }
2161  if (NULL != plugin_nc)
2162  {
2164  plugin_nc = NULL;
2165  }
2167  active_stccs = NULL;
2168  if (NULL != blacklist)
2169  {
2172  NULL);
2174  blacklist = NULL;
2175  }
2176  GST_hello_stop ();
2178 
2179  if (NULL != GST_peerinfo)
2180  {
2181  GNUNET_PEERINFO_disconnect (GST_peerinfo);
2182  GST_peerinfo = NULL;
2183  }
2184  if (NULL != GST_stats)
2185  {
2186  GNUNET_STATISTICS_destroy (GST_stats, GNUNET_NO);
2187  GST_stats = NULL;
2188  }
2189 }
2190 
2191 
2197 static void
2199 {
2200  struct GST_BlacklistCheck *bc = cls;
2201  struct TransportClient *tc;
2202  struct GNUNET_MQ_Envelope *env;
2203  struct BlacklistMessage *bm;
2204 
2205  bc->task = NULL;
2206  while (NULL != (tc = bc->bl_pos))
2207  {
2208  if (CT_BLACKLIST == tc->type)
2209  break;
2210  bc->bl_pos = tc->next;
2211  }
2212  if (NULL == tc)
2213  {
2215  "No other blacklist clients active, will allow neighbour `%s'\n",
2216  GNUNET_i2s (&bc->peer));
2217 
2218  bc->cont (bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_OK);
2220  return;
2221  }
2222  if ((NULL != tc->details.blacklist.bc) ||
2223  (GNUNET_NO != tc->details.blacklist.waiting_for_reply))
2224  return; /* someone else busy with this client */
2225  tc->details.blacklist.bc = bc;
2227  bm->is_allowed = htonl (0);
2228  bm->peer = bc->peer;
2229  GNUNET_MQ_send (tc->mq, env);
2230  if (GNUNET_YES == tc->details.blacklist.call_receive_done)
2231  {
2232  tc->details.blacklist.call_receive_done = GNUNET_NO;
2234  }
2235  tc->details.blacklist.waiting_for_reply = GNUNET_YES;
2236 }
2237 
2238 
2245 static void
2247 {
2248  struct TransportClient *tc = cls;
2249  struct GST_BlacklistCheck *bc;
2250 
2251  if (CT_BLACKLIST != tc->type)
2252  {
2253  GNUNET_break (0);
2255  return;
2256  }
2258  "Blacklist client %p sent reply for `%s'\n",
2259  tc,
2260  GNUNET_i2s (&msg->peer));
2261  bc = tc->details.blacklist.bc;
2262  tc->details.blacklist.bc = NULL;
2263  tc->details.blacklist.waiting_for_reply = GNUNET_NO;
2264  tc->details.blacklist.call_receive_done = GNUNET_YES;
2265  if (NULL != bc)
2266  {
2267  /* only run this if the blacklist check has not been
2268  * cancelled in the meantime... */
2269  GNUNET_assert (bc->bl_pos == tc);
2270  if (ntohl (msg->is_allowed) == GNUNET_SYSERR)
2271  {
2273  "Blacklist check failed, peer not allowed\n");
2274  /* For the duration of the continuation, make the ongoing
2275  check invisible (to avoid double-cancellation); then
2276  add it back again so we can re-use GST_blacklist_test_cancel() */
2277  GNUNET_CONTAINER_DLL_remove (bc_head, bc_tail, bc);
2278  bc->cont (bc->cont_cls, &bc->peer, bc->address, bc->session, GNUNET_NO);
2279  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2281  tc->details.blacklist.call_receive_done = GNUNET_NO;
2283  return;
2284  }
2285  else
2286  {
2288  "Blacklist check succeeded, continuing with checks\n");
2289  tc->details.blacklist.call_receive_done = GNUNET_NO;
2291  bc->bl_pos = tc->next;
2293  }
2294  }
2295  /* check if any other blacklist checks are waiting for this blacklister */
2296  for (bc = bc_head; bc != NULL; bc = bc->next)
2297  if ((bc->bl_pos == tc) && (NULL == bc->task))
2298  {
2300  break;
2301  }
2302 }
2303 
2304 
2311 void
2313  const char *transport_name)
2314 {
2315  char *transport = NULL;
2316 
2317  if (NULL != transport_name)
2318  {
2320  "Adding peer `%s' with plugin `%s' to blacklist\n",
2321  GNUNET_i2s (peer),
2322  transport_name);
2323  transport = GNUNET_strdup (transport_name);
2324  }
2325  else
2327  "Adding peer `%s' with all plugins to blacklist\n",
2328  GNUNET_i2s (peer));
2329  if (NULL == blacklist)
2330  blacklist =
2332  GNUNET_NO);
2333 
2335  peer,
2336  transport,
2338 }
2339 
2340 
2347 void
2349  struct GNUNET_ATS_Session *session)
2350 {
2351  struct GST_BlacklistCheck *bc;
2352  struct GST_BlacklistCheck *n;
2353 
2354  n = bc_head;
2355  while (NULL != (bc = n))
2356  {
2357  n = bc->next;
2358  if ((bc->session == session) &&
2359  (0 == GNUNET_HELLO_address_cmp (bc->address, address)))
2360  {
2361  bc->cont (bc->cont_cls,
2362  &bc->peer,
2363  bc->address,
2364  bc->session,
2365  GNUNET_SYSERR);
2367  }
2368  }
2369 }
2370 
2371 
2381 static int
2382 test_blacklisted (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
2383 {
2384  const char *transport_name = cls;
2385  char *be = value;
2386 
2387  /* Blacklist entry be:
2388  * (NULL == be): peer is blacklisted with all plugins
2389  * (NULL != be): peer is blacklisted for a specific plugin
2390  *
2391  * If (NULL != transport_name) we look for a transport specific entry:
2392  * if (transport_name == be) forbidden
2393  *
2395  "Comparing BL request for peer `%4s':`%s' with BL entry: `%s'\n",
2396  GNUNET_i2s (key),
2397  (NULL == transport_name) ? "unspecified" : transport_name,
2398  (NULL == be) ? "all plugins" : be);
2399  /* all plugins for this peer were blacklisted: disallow */
2400  if (NULL == value)
2401  return GNUNET_NO;
2402 
2403  /* blacklist check for specific transport */
2404  if ((NULL != transport_name) && (NULL != value))
2405  {
2406  if (0 == strcmp (transport_name, be))
2407  return GNUNET_NO; /* plugin is blacklisted! */
2408  }
2409  return GNUNET_OK;
2410 }
2411 
2412 
2425 struct GST_BlacklistCheck *
2427  const char *transport_name,
2429  void *cont_cls,
2430  const struct GNUNET_HELLO_Address *address,
2431  struct GNUNET_ATS_Session *session)
2432 {
2433  struct GST_BlacklistCheck *bc;
2434  struct TransportClient *tc;
2435 
2436  GNUNET_assert (NULL != peer);
2438  "Blacklist check for peer `%s':%s\n",
2439  GNUNET_i2s (peer),
2440  (NULL != transport_name) ? transport_name : "unspecified");
2441 
2442  /* Check local blacklist by iterating over hashmap
2443  * If iteration is aborted, we found a matching blacklist entry */
2444  if ((NULL != blacklist) &&
2445  (GNUNET_SYSERR ==
2447  peer,
2449  (void *) transport_name)))
2450  {
2451  /* Disallowed by config, disapprove instantly */
2452  GNUNET_STATISTICS_update (GST_stats,
2453  gettext_noop ("# disconnects due to blacklist"),
2454  1,
2455  GNUNET_NO);
2457  _ ("Disallowing connection to peer `%s' on transport %s\n"),
2458  GNUNET_i2s (peer),
2459  (NULL != transport_name) ? transport_name : "unspecified");
2460  if (NULL != cont)
2461  cont (cont_cls, peer, address, session, GNUNET_NO);
2462  return NULL;
2463  }
2464 
2465  for (tc = clients_head; NULL != tc; tc = tc->next)
2466  if (CT_BLACKLIST == tc->type)
2467  break;
2468  if (NULL == tc)
2469  {
2470  /* no blacklist clients, approve instantly */
2471  if (NULL != cont)
2472  cont (cont_cls, peer, address, session, GNUNET_OK);
2474  "Allowing connection to peer `%s' %s\n",
2475  GNUNET_i2s (peer),
2476  (NULL != transport_name) ? transport_name : "");
2477  return NULL;
2478  }
2479 
2480  /* need to query blacklist clients */
2481  bc = GNUNET_new (struct GST_BlacklistCheck);
2482  GNUNET_CONTAINER_DLL_insert (bc_head, bc_tail, bc);
2483  bc->peer = *peer;
2484  bc->address = GNUNET_HELLO_address_copy (address);
2485  bc->session = session;
2486  bc->cont = cont;
2487  bc->cont_cls = cont_cls;
2488  bc->bl_pos = tc;
2490  return bc;
2491 }
2492 
2493 
2499 void
2501 {
2502  GNUNET_CONTAINER_DLL_remove (bc_head, bc_tail, bc);
2503  if (NULL != bc->bl_pos)
2504  {
2505  if ((CT_BLACKLIST == bc->bl_pos->type) &&
2506  (bc->bl_pos->details.blacklist.bc == bc))
2507  {
2508  /* we're at the head of the queue, remove us! */
2509  bc->bl_pos->details.blacklist.bc = NULL;
2510  }
2511  }
2512  if (NULL != bc->task)
2513  {
2515  bc->task = NULL;
2516  }
2517  GNUNET_free (bc->address);
2518  GNUNET_free (bc);
2519 }
2520 
2521 
2530 static void
2532  const char *section,
2533  const char *option,
2534  const char *value)
2535 {
2536  unsigned int *res = cls;
2537  struct GNUNET_PeerIdentity peer;
2538  char *plugs;
2539  char *pos;
2540 
2541  if (GNUNET_OK !=
2543  strlen (option),
2544  &peer.public_key))
2545  return;
2546 
2547  if ((NULL == value) || (0 == strcmp (value, "")))
2548  {
2549  /* Blacklist whole peer */
2550  GST_blacklist_add_peer (&peer, NULL);
2552  _ ("Adding blacklisting entry for peer `%s'\n"),
2553  GNUNET_i2s (&peer));
2554  }
2555  else
2556  {
2557  plugs = GNUNET_strdup (value);
2558  for (pos = strtok (plugs, " "); pos != NULL; pos = strtok (NULL, " "))
2559  {
2561  _ ("Adding blacklisting entry for peer `%s':`%s'\n"),
2562  GNUNET_i2s (&peer),
2563  pos);
2564  GST_blacklist_add_peer (&peer, pos);
2565  }
2566  GNUNET_free (plugs);
2567  }
2568  (*res)++;
2569 }
2570 
2571 
2578 static void
2580  const struct GNUNET_PeerIdentity *my_id)
2581 {
2582  char cfg_sect[512];
2583  unsigned int res = 0;
2584 
2585  GNUNET_snprintf (cfg_sect,
2586  sizeof(cfg_sect),
2587  "transport-blacklist-%s",
2588  GNUNET_i2s_full (my_id));
2590  cfg_sect,
2592  &res);
2594  "Loaded %u blacklisting entries from configuration\n",
2595  res);
2596 }
2597 
2598 
2606 static void
2607 run (void *cls,
2608  const struct GNUNET_CONFIGURATION_Handle *c,
2610 {
2611  char *keyfile;
2612  long long unsigned int max_fd_cfg;
2613  int max_fd_rlimit;
2614  int max_fd;
2615  int friend_only;
2616 
2617  /* setup globals */
2618  GST_cfg = c;
2620  "PEER",
2621  "PRIVATE_KEY",
2622  &keyfile))
2623  {
2624  GNUNET_log (
2626  _ (
2627  "Transport service is lacking key configuration settings. Exiting.\n"));
2629  return;
2630  }
2632  "transport",
2633  "HELLO_EXPIRATION",
2634  &hello_expiration))
2635  {
2637  }
2638  if (GNUNET_SYSERR ==
2640  GNUNET_YES,
2642  {
2644  "Failed to setup peer's private key\n");
2646  GNUNET_free (keyfile);
2647  return;
2648  }
2649  GNUNET_free (keyfile);
2650  GST_stats = GNUNET_STATISTICS_create ("transport", GST_cfg);
2651  GST_peerinfo = GNUNET_PEERINFO_connect (GST_cfg);
2655  "My identity is `%s'\n",
2657 
2659  if (NULL == GST_peerinfo)
2660  {
2662  _ ("Could not access PEERINFO service. Exiting.\n"));
2664  return;
2665  }
2666 
2667  max_fd_rlimit = 0;
2668 #if HAVE_GETRLIMIT
2669  {
2670  struct rlimit r_file;
2671 
2672  if (0 == getrlimit (RLIMIT_NOFILE, &r_file))
2673  {
2674  max_fd_rlimit = r_file.rlim_cur;
2676  "Maximum number of open files was: %u/%u\n",
2677  (unsigned int) r_file.rlim_cur,
2678  (unsigned int) r_file.rlim_max);
2679  }
2680  max_fd_rlimit =
2681  (9 * max_fd_rlimit) / 10; /* Keep 10% for rest of transport */
2682  }
2683 #endif
2685  "transport",
2686  "MAX_FD",
2687  &max_fd_cfg))
2688  max_fd_cfg = max_fd_rlimit;
2689 
2690  if (max_fd_cfg > max_fd_rlimit)
2691  max_fd = max_fd_cfg;
2692  else
2693  max_fd = max_fd_rlimit;
2694  if (max_fd < DEFAULT_MAX_FDS)
2695  max_fd = DEFAULT_MAX_FDS;
2696 
2698  "Limiting number of sockets to %u: validation %u, neighbors: %u\n",
2699  max_fd,
2700  (max_fd / 3),
2701  (max_fd / 3) * 2);
2702 
2703  friend_only =
2704  GNUNET_CONFIGURATION_get_value_yesno (GST_cfg, "topology", "FRIENDS-ONLY");
2705  if (GNUNET_SYSERR == friend_only)
2706  friend_only = GNUNET_NO; /* According to topology defaults */
2707  /* start subsystems */
2708  /* Disable DSTJ peer */
2709  {
2710  struct GNUNET_PeerIdentity dstj;
2711  const char *ds = "DSTJBRRKZ8TBW3FGK6B0M5QXWT9WYNZ45H5MCV4HY7ST64Q8T9F0";
2712 
2713  GNUNET_assert (
2714  GNUNET_OK ==
2716  strlen (ds),
2717  &dstj.public_key));
2718  GST_blacklist_add_peer (&dstj, NULL);
2719  }
2721  GST_is = GNUNET_NT_scanner_init ();
2722  GST_ats_connect = GNUNET_ATS_connectivity_init (GST_cfg);
2723  GST_ats =
2725  GST_ats_init ();
2731  GST_hello_start (friend_only, &process_hello_update, NULL);
2732  GST_neighbours_start ((max_fd / 3) * 2);
2733  active_stccs = GNUNET_CONTAINER_multipeermap_create (128, GNUNET_YES);
2734  plugin_nc = GNUNET_notification_context_create (0);
2735  GST_validation_start ((max_fd / 3));
2736 }
2737 
2738 
2743  "transport",
2745  &run,
2748  NULL,
2751  struct StartMessage,
2752  NULL),
2753  GNUNET_MQ_hd_var_size (client_hello,
2755  struct GNUNET_MessageHeader,
2756  NULL),
2759  struct OutboundMessage,
2760  NULL),
2761  GNUNET_MQ_hd_var_size (client_address_to_string,
2763  struct AddressLookupMessage,
2764  NULL),
2765  GNUNET_MQ_hd_fixed_size (client_monitor_peers,
2767  struct PeerMonitorMessage,
2768  NULL),
2769  GNUNET_MQ_hd_fixed_size (client_blacklist_init,
2771  struct GNUNET_MessageHeader,
2772  NULL),
2773  GNUNET_MQ_hd_fixed_size (client_blacklist_reply,
2775  struct BlacklistMessage,
2776  NULL),
2777  GNUNET_MQ_hd_fixed_size (client_set_metric,
2779  struct TrafficMetricMessage,
2780  NULL),
2781  GNUNET_MQ_hd_fixed_size (client_monitor_plugins,
2783  struct GNUNET_MessageHeader,
2784  NULL),
2786 
2787 
2788 /* 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 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.
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.
struct TransportClient::@68::@69 blacklist
Additional details if type is CT_BLACKLIST.
#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.
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).
enum GNUNET_GenericReturnValue 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.
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.
enum GNUNET_GenericReturnValue 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.
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:178
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
int GNUNET_snprintf(char *buf, size_t size, const char *format,...) __attribute__((format(printf
Like snprintf, just aborts if the buffer is of insufficient size.
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
enum GNUNET_GenericReturnValue 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:357
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:557
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:2408
#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:454
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:2325
#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:86
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.
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
union TransportClient::@62 details
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:197
#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.
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 address and...
uint16_t session_state
An enum GNUNET_TRANSPORT_SessionState in NBO.
Definition: transport.h:619
configuration data
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.
void GST_plugins_unload()
Unload all plugins.
enum GNUNET_GenericReturnValue 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.
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 continuous 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:263
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.
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...
enum GNUNET_GenericReturnValue 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_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)?
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.
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:2268
struct GNUNET_ATS_SessionKiller * prev
Kept in a DLL.
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:464
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:2244
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