GNUnet  0.11.x
plugin_transport_http_server.c
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1 /*
2  This file is part of GNUnet
3  Copyright (C) 2002-2014, 2017 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  */
20 
28 #include "platform.h"
29 #include "gnunet_util_lib.h"
32 #include "gnunet_nat_service.h"
34 #include <microhttpd.h>
35 #include <regex.h>
36 
37 
38 #if BUILD_HTTPS
39 #define PLUGIN_NAME "https_server"
40 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT \
41  libgnunet_plugin_transport_https_server_init
42 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE \
43  libgnunet_plugin_transport_https_server_done
44 #else
45 #define PLUGIN_NAME "http_server"
46 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT \
47  libgnunet_plugin_transport_http_server_init
48 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE \
49  libgnunet_plugin_transport_http_server_done
50 #endif
51 
52 #define HTTP_ERROR_RESPONSE \
53  "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
54 #define _RECEIVE 0
55 #define _SEND 1
56 
57 
58 #define LOG(kind, ...) GNUNET_log_from (kind, "transport-" PLUGIN_NAME, \
59  __VA_ARGS__)
60 
61 
65 struct ServerRequest
66 {
72 
76  struct MHD_Connection *mhd_conn;
77 
81  struct MHD_Daemon *mhd_daemon;
82 
86  uint32_t options;
87 #define OPTION_LONG_POLL 1 /* GET request wants long-poll semantics */
88 
92  int direction;
93 
98  int connected;
99 
103  bool suspended;
104 };
105 
106 
111 {
116 
121 
126 
130  size_t addrlen;
131 };
132 
133 
137 struct HTTP_Message
138 {
142  struct HTTP_Message *next;
143 
147  struct HTTP_Message *prev;
148 
152  char *buf;
153 
157  size_t pos;
158 
162  size_t size;
163 
167  size_t overhead;
168 
175 
179  void *transmit_cont_cls;
180 };
181 
182 
186 struct GNUNET_ATS_Session
187 {
192  struct GNUNET_PeerIdentity target;
193 
198 
202  struct HTTP_Message *msg_head;
203 
207  struct HTTP_Message *msg_tail;
208 
212  struct GNUNET_MessageStreamTokenizer *msg_tk;
213 
217  struct ServerRequest *server_recv;
218 
222  struct ServerRequest *server_send;
223 
228 
233  struct GNUNET_TIME_Absolute next_receive;
234 
239 
244 
248  struct GNUNET_SCHEDULER_Task *recv_wakeup_task;
249 
253  unsigned long long bytes_in_queue;
254 
258  unsigned int msgs_in_queue;
259 
263  uint32_t tag;
264 
269 
274 };
275 
276 
281 {
286 
291 
296 
300  void *sic_cls;
301 
305  char *name;
306 
310  char *protocol;
311 
316 
322 
327 
332 
337 
341  struct sockaddr_in *server_addr_v4;
342 
346  struct sockaddr_in6 *server_addr_v6;
347 
351  struct MHD_Daemon *server_v4;
352 
356  struct MHD_Daemon *server_v6;
357 
358 #if BUILD_HTTPS
359 
368  char *crypto_init;
369 
373  char *key;
374 
378  char *cert;
379 #endif
380 
385 
390 
395 
399  unsigned int external_only;
400 
405 
410 
415 
420  unsigned int max_request;
421 
426  unsigned int cur_request;
427 
432 
437 
441  uint32_t options;
442 
446  uint16_t use_ipv6;
447 
451  uint16_t use_ipv4;
452 
456  uint16_t port;
457 
461  regex_t url_regex;
462 };
463 
464 
473 static void
475  struct GNUNET_ATS_Session *session,
477 {
478  struct GNUNET_TRANSPORT_SessionInfo info;
479 
480  if (NULL == plugin->sic)
481  return;
482  memset (&info, 0, sizeof(info));
483  info.state = state;
484  info.is_inbound = GNUNET_YES;
485  info.num_msg_pending = session->msgs_in_queue;
486  info.num_bytes_pending = session->bytes_in_queue;
487  info.receive_delay = session->next_receive;
488  info.session_timeout = session->timeout;
489  info.address = session->address;
490  plugin->sic (plugin->sic_cls,
491  session,
492  &info);
493 }
494 
495 
501 static void
502 server_wake_up (void *cls)
503 {
504  struct GNUNET_ATS_Session *s = cls;
505 
506  s->recv_wakeup_task = NULL;
508  "Session %p: Waking up PUT handle\n",
509  s);
511  MHD_resume_connection (s->server_recv->mhd_conn);
512  s->server_recv->suspended = false;
513 }
514 
515 
524 static void
526  struct MHD_Daemon *server,
527  int now);
528 
529 
535 static void
537 {
538  struct HTTP_Server_Plugin *plugin = s->plugin;
539  struct HTTP_Message *msg;
540 
541  if (NULL != s->timeout_task)
542  {
544  s->timeout_task = NULL;
546  }
547  if (NULL != s->recv_wakeup_task)
548  {
550  s->recv_wakeup_task = NULL;
551  if (NULL != s->server_recv)
552  {
554  s->server_recv->suspended = false;
555  MHD_resume_connection (s->server_recv->mhd_conn);
556  }
557  }
560  &s->target,
561  s));
562  while (NULL != (msg = s->msg_head))
563  {
565  s->msg_tail,
566  msg);
567  if (NULL != msg->transmit_cont)
568  msg->transmit_cont (msg->transmit_cont_cls,
569  &s->target,
571  msg->size,
572  msg->pos + msg->overhead);
573  GNUNET_assert (s->msgs_in_queue > 0);
574  s->msgs_in_queue--;
575  GNUNET_assert (s->bytes_in_queue >= msg->size);
576  s->bytes_in_queue -= msg->size;
577  GNUNET_free (msg);
578  }
579 
580  GNUNET_assert (0 == s->msgs_in_queue);
581  GNUNET_assert (0 == s->bytes_in_queue);
582 
583  if (NULL != s->server_send)
584  {
586  "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
587  s, s->server_send,
588  GNUNET_i2s (&s->target));
589  s->server_send->session = NULL;
590  MHD_set_connection_option (s->server_send->mhd_conn,
591  MHD_CONNECTION_OPTION_TIMEOUT,
592  1 /* 0 = no timeout, so this is MIN */);
593  if (s->server_send->suspended)
594  {
595  s->server_send->suspended = false;
596  MHD_resume_connection (s->server_send->mhd_conn);
597  }
598  server_reschedule (plugin,
600  GNUNET_YES);
601  }
602 
603  if (NULL != s->server_recv)
604  {
606  "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
607  s, s->server_recv, GNUNET_i2s (&s->target));
608  s->server_recv->session = NULL;
609  MHD_set_connection_option (s->server_recv->mhd_conn,
610  MHD_CONNECTION_OPTION_TIMEOUT,
611  1 /* 0 = no timeout, so this is MIN */);
612  server_reschedule (plugin,
614  GNUNET_YES);
615  }
616  notify_session_monitor (plugin,
617  s,
619  if (GNUNET_YES == s->known_to_service)
620  {
621  plugin->env->session_end (plugin->env->cls,
622  s->address,
623  s);
625  }
626  if (NULL != s->msg_tk)
627  {
629  s->msg_tk = NULL;
630  }
633  "Session %p destroyed\n",
634  s);
635  GNUNET_free (s);
636 }
637 
638 
647 static int
649  struct GNUNET_ATS_Session *s)
650 {
652  return GNUNET_OK;
653 }
654 
655 
661 static void
663 {
664  struct GNUNET_ATS_Session *s = cls;
665  struct GNUNET_TIME_Relative left;
666 
667  s->timeout_task = NULL;
669  if (0 != left.rel_value_us)
670  {
671  /* not actually our turn yet, but let's at least update
672  the monitor, it may think we're about to die ... */
674  s,
678  s);
679  return;
680  }
682  "Session %p was idle for %s, disconnecting\n",
683  s,
686  GNUNET_YES));
688 }
689 
690 
696 static void
698 {
699  GNUNET_assert (NULL != s->timeout_task);
702 }
703 
704 
732 static ssize_t
734  struct GNUNET_ATS_Session *session,
735  const char *msgbuf,
736  size_t msgbuf_size,
737  unsigned int priority,
738  struct GNUNET_TIME_Relative to,
740  void *cont_cls)
741 {
742  struct HTTP_Server_Plugin *plugin = cls;
743  struct HTTP_Message *msg;
744  ssize_t bytes_sent = 0;
745  char *stat_txt;
746 
748  "Session %p/request %p: Sending message with %u to peer `%s'\n",
749  session,
750  session->server_send,
751  msgbuf_size,
752  GNUNET_i2s (&session->target));
753 
754  /* create new message and schedule */
755  bytes_sent = sizeof(struct HTTP_Message) + msgbuf_size;
756  msg = GNUNET_malloc (bytes_sent);
757  msg->next = NULL;
758  msg->size = msgbuf_size;
759  msg->pos = 0;
760  msg->buf = (char *) &msg[1];
761  msg->transmit_cont = cont;
762  msg->transmit_cont_cls = cont_cls;
763  GNUNET_memcpy (msg->buf,
764  msgbuf,
765  msgbuf_size);
767  session->msg_tail,
768  msg);
769  session->msgs_in_queue++;
770  session->bytes_in_queue += msg->size;
771  notify_session_monitor (plugin,
772  session,
774  GNUNET_asprintf (&stat_txt,
775  "# bytes currently in %s_server buffers",
776  plugin->protocol);
778  stat_txt, msgbuf_size, GNUNET_NO);
779  GNUNET_free (stat_txt);
780 
781  if (NULL != session->server_send)
782  {
783  if (session->server_send->suspended)
784  {
785  MHD_resume_connection (session->server_send->mhd_conn);
786  session->server_send->suspended = false;
787  }
788  server_reschedule (session->plugin,
789  session->server_send->mhd_daemon,
790  GNUNET_YES);
791  }
792  return bytes_sent;
793 }
794 
795 
804 static int
806  const struct GNUNET_PeerIdentity *peer,
807  void *value)
808 {
809  struct GNUNET_ATS_Session *s = value;
810  struct ServerRequest *sc_send;
811  struct ServerRequest *sc_recv;
812 
813  sc_send = s->server_send;
814  sc_recv = s->server_recv;
816  if (NULL != sc_send)
817  sc_send->session = NULL;
818  if (NULL != sc_recv)
819  sc_recv->session = NULL;
820 
821  return GNUNET_OK;
822 }
823 
824 
833 static int
835  const struct GNUNET_PeerIdentity *peer,
836  void *value)
837 {
838  struct GNUNET_ATS_Session *s = value;
839 
841  return GNUNET_OK;
842 }
843 
844 
853 static void
855  const struct GNUNET_PeerIdentity *target)
856 {
857  struct HTTP_Server_Plugin *plugin = cls;
858 
860  "Transport tells me to disconnect `%s'\n",
861  GNUNET_i2s (target));
863  target,
865  plugin);
866 }
867 
868 
881 static int
883  const void *addr,
884  size_t addrlen)
885 {
886  struct HTTP_Server_Plugin *plugin = cls;
887  struct HttpAddressWrapper *next;
888  struct HttpAddressWrapper *pos;
889  const struct HttpAddress *haddr = addr;
890 
891  if ((NULL != plugin->ext_addr) &&
892  (GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
893  plugin->ext_addr->address,
894  plugin->ext_addr->
895  address_length))) )
896  {
897  /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
898  if ((ntohl (haddr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
900  return GNUNET_NO; /* VERIFY option not set as required! */
901  return GNUNET_OK;
902  }
903  next = plugin->addr_head;
904  while (NULL != (pos = next))
905  {
906  next = pos->next;
908  addrlen,
909  pos->address,
910  pos->addrlen)))
911  return GNUNET_OK;
912  }
913  return GNUNET_NO;
914 }
915 
916 
927 static struct GNUNET_ATS_Session *
929  const struct GNUNET_HELLO_Address *address)
930 {
931  return NULL;
932 }
933 
934 
941 static void
942 server_v4_run (void *cls)
943 {
944  struct HTTP_Server_Plugin *plugin = cls;
945 
946  plugin->server_v4_task = NULL;
948  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
949  server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
950 }
951 
952 
959 static void
960 server_v6_run (void *cls)
961 {
962  struct HTTP_Server_Plugin *plugin = cls;
963 
964  plugin->server_v6_task = NULL;
966  GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
967  server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
968 }
969 
970 
980 static struct GNUNET_SCHEDULER_Task *
982  struct MHD_Daemon *daemon_handle,
983  int now)
984 {
985  struct GNUNET_SCHEDULER_Task *ret;
986  fd_set rs;
987  fd_set ws;
988  fd_set es;
989  struct GNUNET_NETWORK_FDSet *wrs;
990  struct GNUNET_NETWORK_FDSet *wws;
991  int max;
992  MHD_UNSIGNED_LONG_LONG timeout;
993  static unsigned long long last_timeout = 0;
994  int haveto;
995  struct GNUNET_TIME_Relative tv;
996 
997  if (GNUNET_YES == plugin->in_shutdown)
998  return NULL;
999 
1000  ret = NULL;
1001  FD_ZERO (&rs);
1002  FD_ZERO (&ws);
1003  FD_ZERO (&es);
1004  wrs = GNUNET_NETWORK_fdset_create ();
1005  wws = GNUNET_NETWORK_fdset_create ();
1006  max = -1;
1007  GNUNET_assert (MHD_YES ==
1008  MHD_get_fdset (daemon_handle,
1009  &rs,
1010  &ws,
1011  &es,
1012  &max));
1013  haveto = MHD_get_timeout (daemon_handle, &timeout);
1014  if (haveto == MHD_YES)
1015  {
1016  if (timeout != last_timeout)
1017  {
1019  "SELECT Timeout changed from %llu to %llu (ms)\n",
1020  last_timeout, timeout);
1021  last_timeout = timeout;
1022  }
1023  if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
1024  tv.rel_value_us = (uint64_t) timeout * 1000LL;
1025  else
1027  }
1028  else
1030  /* Force immediate run, since we have outbound data to send */
1031  if (now == GNUNET_YES)
1033  GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1034  GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1035 
1036  if (daemon_handle == plugin->server_v4)
1037  {
1038  if (plugin->server_v4_task != NULL)
1039  {
1041  plugin->server_v4_task = NULL;
1042  }
1043 #if 0
1045  "Scheduling IPv4 server task in %llu ms\n",
1046  tv);
1047 #endif
1048  ret =
1050  tv, wrs, wws,
1051  &server_v4_run, plugin);
1052  }
1053  if (daemon_handle == plugin->server_v6)
1054  {
1055  if (plugin->server_v6_task != NULL)
1056  {
1058  plugin->server_v6_task = NULL;
1059  }
1060 #if 0
1062  "Scheduling IPv6 server task in %llu ms\n", tv);
1063 #endif
1064  ret =
1066  tv, wrs, wws,
1067  &server_v6_run, plugin);
1068  }
1071  return ret;
1072 }
1073 
1074 
1083 static void
1085  struct MHD_Daemon *server,
1086  int now)
1087 {
1088  if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
1089  {
1090  if (GNUNET_YES == plugin->server_v4_immediately)
1091  return; /* No rescheduling, server will run asap */
1092 
1093  if (GNUNET_YES == now)
1095 
1096  if (plugin->server_v4_task != NULL)
1097  {
1099  plugin->server_v4_task = NULL;
1100  }
1101  plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
1102  }
1103 
1104  if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
1105  {
1106  if (GNUNET_YES == plugin->server_v6_immediately)
1107  return; /* No rescheduling, server will run asap */
1108 
1109  if (GNUNET_YES == now)
1111 
1112  if (plugin->server_v6_task != NULL)
1113  {
1115  plugin->server_v6_task = NULL;
1116  }
1117  plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
1118  }
1119 }
1120 
1121 
1130 static unsigned int
1132 {
1133  return 3;
1134 }
1135 
1136 
1146 static void
1148  const struct
1150  struct GNUNET_ATS_Session *session)
1151 {
1153 }
1154 
1155 
1163 static void
1165  struct GNUNET_ATS_Session *s,
1166  unsigned int to)
1167 {
1168  /* Setting timeouts for other connections */
1169  if (NULL != s->server_recv)
1170  {
1172  "Setting timeout for %p to %u sec.\n",
1173  s->server_recv, to);
1174  MHD_set_connection_option (s->server_recv->mhd_conn,
1175  MHD_CONNECTION_OPTION_TIMEOUT,
1176  to);
1178  }
1179  if (NULL != s->server_send)
1180  {
1182  "Setting timeout for %p to %u sec.\n",
1183  s->server_send, to);
1184  MHD_set_connection_option (s->server_send->mhd_conn,
1185  MHD_CONNECTION_OPTION_TIMEOUT,
1186  to);
1188  }
1189 }
1190 
1191 
1202 static int
1204  const char *url,
1205  struct GNUNET_PeerIdentity *target,
1206  uint32_t *tag,
1207  uint32_t *options)
1208 {
1209  regmatch_t matches[4];
1210  const char *tag_start;
1211  const char *target_start;
1212  char *tag_end;
1213  char *options_end;
1214  size_t hash_length;
1215  unsigned long int rc;
1216 
1217  /* URL parsing */
1218 #define URL_REGEX \
1219  ("^.*/([0-9A-Z]+);([0-9]+)(,[0-9]+)?$")
1220 
1221  if (NULL == url)
1222  {
1223  GNUNET_break (0);
1224  return GNUNET_SYSERR;
1225  }
1226 
1227  if (regexec (&plugin->url_regex, url, 4, matches, 0))
1228  {
1230  "URL `%s' did not match regex\n", url);
1231  return GNUNET_SYSERR;
1232  }
1233 
1234  target_start = &url[matches[1].rm_so];
1235  tag_start = &url[matches[2].rm_so];
1236 
1237  /* convert tag */
1238  rc = strtoul (tag_start, &tag_end, 10);
1239  if (&url[matches[2].rm_eo] != tag_end)
1240  {
1242  "URL tag did not line up with submatch\n");
1243  return GNUNET_SYSERR;
1244  }
1245  if (rc == 0)
1246  {
1248  "URL tag is zero\n");
1249  return GNUNET_SYSERR;
1250  }
1251  if ((rc == ULONG_MAX) && (ERANGE == errno))
1252  {
1254  "URL tag > ULONG_MAX\n");
1255  return GNUNET_SYSERR;
1256  }
1257  if (rc > UINT32_MAX)
1258  {
1260  "URL tag > UINT32_MAX\n");
1261  return GNUNET_SYSERR;
1262  }
1263  (*tag) = (uint32_t) rc;
1265  "Found tag `%u' in url\n",
1266  *tag);
1267 
1268  /* convert peer id */
1269  hash_length = matches[1].rm_eo - matches[1].rm_so;
1270  if (hash_length != plugin->peer_id_length)
1271  {
1273  "URL target is %u bytes, expecting %u\n",
1274  hash_length, plugin->peer_id_length);
1275  return GNUNET_SYSERR;
1276  }
1277  if (GNUNET_OK !=
1279  hash_length,
1280  &target->public_key))
1281  {
1283  "URL target conversion failed\n");
1284  return GNUNET_SYSERR;
1285  }
1287  "Found target `%s' in URL\n",
1288  GNUNET_i2s_full (target));
1289 
1290  /* convert options */
1291  if (-1 == matches[3].rm_so)
1292  {
1293  *options = 0;
1294  }
1295  else
1296  {
1297  rc = strtoul (&url[matches[3].rm_so + 1], &options_end, 10);
1298  if (&url[matches[3].rm_eo] != options_end)
1299  {
1301  "URL options did not line up with submatch\n");
1302  return GNUNET_SYSERR;
1303  }
1304  if ((rc == ULONG_MAX) && (ERANGE == errno))
1305  {
1307  "URL options > ULONG_MAX\n");
1308  return GNUNET_SYSERR;
1309  }
1310  if (rc > UINT32_MAX)
1311  {
1313  "URL options > UINT32_MAX\n");
1314  return GNUNET_SYSERR;
1315  }
1316  (*options) = (uint32_t) rc;
1318  "Found options `%u' in url\n",
1319  *options);
1320  }
1321  return GNUNET_OK;
1322 }
1323 
1324 
1329 {
1334 
1338  uint32_t tag;
1339 };
1340 
1341 
1350 static int
1351 session_tag_it (void *cls,
1352  const struct GNUNET_PeerIdentity *key,
1353  void *value)
1354 {
1355  struct GNUNET_ATS_SessionTagContext *stc = cls;
1356  struct GNUNET_ATS_Session *s = value;
1357 
1358  if (s->tag == stc->tag)
1359  {
1360  stc->res = s;
1361  return GNUNET_NO;
1362  }
1363  return GNUNET_YES;
1364 }
1365 
1366 
1376 static struct ServerRequest *
1378  struct MHD_Connection *mhd_connection,
1379  const char *url,
1380  const char *method)
1381 {
1382  struct GNUNET_ATS_Session *s = NULL;
1383  struct ServerRequest *sc = NULL;
1384  const union MHD_ConnectionInfo *conn_info;
1385  struct HttpAddress *addr;
1386  struct GNUNET_PeerIdentity target;
1387  size_t addr_len;
1388  struct GNUNET_ATS_SessionTagContext stc;
1389  uint32_t options;
1390  int direction = GNUNET_SYSERR;
1391  unsigned int to;
1393 
1394  conn_info = MHD_get_connection_info (mhd_connection,
1395  MHD_CONNECTION_INFO_CLIENT_ADDRESS);
1396  if ((conn_info->client_addr->sa_family != AF_INET) &&
1397  (conn_info->client_addr->sa_family != AF_INET6))
1398  return NULL;
1400  "New %s request from %s\n",
1401  method,
1402  url);
1403  stc.tag = 0;
1404  options = 0; /* make gcc happy */
1405  if (GNUNET_SYSERR ==
1406  server_parse_url (plugin, url, &target, &stc.tag, &options))
1407  {
1409  "Invalid url %s\n", url);
1410  return NULL;
1411  }
1412  if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1413  direction = _RECEIVE;
1414  else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
1415  direction = _SEND;
1416  else
1417  {
1419  "Invalid method %s for request from %s\n",
1420  method, url);
1421  return NULL;
1422  }
1423 
1424  plugin->cur_request++;
1426  "New %s request from %s with tag %u (%u of %u)\n",
1427  method,
1428  GNUNET_i2s (&target),
1429  stc.tag,
1430  plugin->cur_request, plugin->max_request);
1431  /* find existing session */
1432  stc.res = NULL;
1434  &target,
1435  &session_tag_it,
1436  &stc);
1437  if (NULL == (s = stc.res))
1438  {
1439  /* create new session */
1440  addr = NULL;
1441  switch (conn_info->client_addr->sa_family)
1442  {
1443  case (AF_INET):
1444  addr = http_common_address_from_socket (plugin->protocol,
1445  conn_info->client_addr,
1446  sizeof(struct sockaddr_in));
1447  addr_len = http_common_address_get_size (addr);
1448  scope = plugin->env->get_address_type (plugin->env->cls,
1449  conn_info->client_addr,
1450  sizeof(struct sockaddr_in));
1451  break;
1452 
1453  case (AF_INET6):
1454  addr = http_common_address_from_socket (plugin->protocol,
1455  conn_info->client_addr,
1456  sizeof(struct sockaddr_in6));
1457  addr_len = http_common_address_get_size (addr);
1458  scope = plugin->env->get_address_type (plugin->env->cls,
1459  conn_info->client_addr,
1460  sizeof(struct sockaddr_in6));
1461  break;
1462 
1463  default:
1464  /* external host name */
1465  return NULL;
1466  }
1467  s = GNUNET_new (struct GNUNET_ATS_Session);
1468  s->target = target;
1469  s->plugin = plugin;
1470  s->scope = scope;
1472  PLUGIN_NAME,
1473  addr,
1474  addr_len,
1477  s->tag = stc.tag;
1481  s);
1483  &s->target,
1484  s,
1486  notify_session_monitor (plugin,
1487  s,
1489  notify_session_monitor (plugin,
1490  s,
1493  "Creating new session %p for peer `%s' connecting from `%s'\n",
1494  s, GNUNET_i2s (&target),
1496  addr,
1497  addr_len));
1498  GNUNET_free_non_null (addr);
1499  }
1500 
1501  if ((_RECEIVE == direction) &&
1502  (NULL != s->server_recv))
1503  {
1505  "Duplicate PUT request from `%s' tag %u, dismissing new request\n",
1506  GNUNET_i2s (&target),
1507  stc.tag);
1508  return NULL;
1509  }
1510  if ((_SEND == direction) && (NULL != s->server_send))
1511  {
1513  "Duplicate GET request from `%s' tag %u, dismissing new request\n",
1514  GNUNET_i2s (&target),
1515  stc.tag);
1516  return NULL;
1517  }
1518  sc = GNUNET_new (struct ServerRequest);
1519  if (conn_info->client_addr->sa_family == AF_INET)
1520  sc->mhd_daemon = plugin->server_v4;
1521  if (conn_info->client_addr->sa_family == AF_INET6)
1522  sc->mhd_daemon = plugin->server_v6;
1523  sc->mhd_conn = mhd_connection;
1524  sc->direction = direction;
1525  sc->connected = GNUNET_NO;
1526  sc->session = s;
1527  sc->options = options;
1528  if (direction == _SEND)
1529  {
1530  s->server_send = sc;
1531  }
1532  if (direction == _RECEIVE)
1533  {
1534  s->server_recv = sc;
1535  }
1536 
1537  if ((GNUNET_NO == s->known_to_service) &&
1538  (NULL != s->server_send) &&
1539  (NULL != s->server_recv))
1540  {
1542  notify_session_monitor (plugin,
1543  s,
1545  plugin->env->session_start (plugin->env->cls,
1546  s->address,
1547  s,
1548  s->scope);
1549  }
1550 
1551  to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1552  server_mhd_connection_timeout (plugin, s, to);
1553  return sc;
1554 }
1555 
1556 
1566 static ssize_t
1568  uint64_t pos,
1569  char *buf,
1570  size_t max)
1571 {
1572  struct ServerRequest *sc = cls;
1573  struct GNUNET_ATS_Session *s = sc->session;
1574  ssize_t bytes_read = 0;
1575  struct HTTP_Message *msg;
1576  char *stat_txt;
1577 
1578  if (NULL == s)
1579  {
1580  /* session is disconnecting */
1581  return 0;
1582  }
1583 
1584  sc = s->server_send;
1585  if (NULL == sc)
1586  return 0;
1587  msg = s->msg_head;
1588  if (NULL != msg)
1589  {
1590  /* sending */
1591  bytes_read = GNUNET_MIN (msg->size - msg->pos,
1592  max);
1593  GNUNET_memcpy (buf, &msg->buf[msg->pos], bytes_read);
1594  msg->pos += bytes_read;
1595 
1596  /* removing message */
1597  if (msg->pos == msg->size)
1598  {
1600  s->msg_tail,
1601  msg);
1602  if (NULL != msg->transmit_cont)
1604  msg->size, msg->size + msg->overhead);
1605  GNUNET_assert (s->msgs_in_queue > 0);
1606  s->msgs_in_queue--;
1607  GNUNET_assert (s->bytes_in_queue >= msg->size);
1608  s->bytes_in_queue -= msg->size;
1609  GNUNET_free (msg);
1611  s,
1613  }
1614  }
1615  if (0 < bytes_read)
1616  {
1617  sc->connected = GNUNET_YES;
1619  "Sent %u bytes to peer `%s' with session %p \n",
1620  bytes_read,
1621  GNUNET_i2s (&s->target),
1622  s);
1623  GNUNET_asprintf (&stat_txt,
1624  "# bytes currently in %s_server buffers",
1625  s->plugin->protocol);
1626  GNUNET_STATISTICS_update (s->plugin->env->stats,
1627  stat_txt,
1628  -bytes_read,
1629  GNUNET_NO);
1630  GNUNET_free (stat_txt);
1631  GNUNET_asprintf (&stat_txt,
1632  "# bytes transmitted via %s_server",
1633  s->plugin->protocol);
1634  GNUNET_STATISTICS_update (s->plugin->env->stats,
1635  stat_txt, bytes_read, GNUNET_NO);
1636  GNUNET_free (stat_txt);
1637  }
1638  else if ((sc->options & OPTION_LONG_POLL) && sc->connected)
1639  {
1641  "Completing GET response to peer `%s' with session %p\n",
1642  GNUNET_i2s (&s->target),
1643  s);
1644  return MHD_CONTENT_READER_END_OF_STREAM;
1645  }
1646  else
1647  {
1648  MHD_suspend_connection (s->server_send->mhd_conn);
1649  s->server_send->suspended = true;
1650  return 0;
1651  }
1652  return bytes_read;
1653 }
1654 
1655 
1663 static int
1665  const struct GNUNET_MessageHeader *message)
1666 {
1667  struct GNUNET_ATS_Session *s = cls;
1668  struct HTTP_Server_Plugin *plugin = s->plugin;
1669  struct GNUNET_TIME_Relative delay;
1670  char *stat_txt;
1671 
1672  if (GNUNET_NO == s->known_to_service)
1673  {
1675  plugin->env->session_start (plugin->env->cls,
1676  s->address,
1677  s,
1678  s->scope);
1679  notify_session_monitor (plugin,
1680  s,
1682  }
1683  delay = plugin->env->receive (plugin->env->cls,
1684  s->address,
1685  s,
1686  message);
1687  GNUNET_asprintf (&stat_txt,
1688  "# bytes received via %s_server",
1689  plugin->protocol);
1691  stat_txt,
1692  ntohs (message->size),
1693  GNUNET_NO);
1694  GNUNET_free (stat_txt);
1696  if (delay.rel_value_us > 0)
1697  {
1699  "Peer `%s' address `%s' next read delayed for %s\n",
1700  GNUNET_i2s (&s->target),
1702  s->address->address,
1703  s->address->address_length),
1705  GNUNET_YES));
1706  }
1708  return GNUNET_OK;
1709 }
1710 
1711 
1718 static void
1719 add_cors_headers (struct MHD_Response *response)
1720 {
1721  MHD_add_response_header (response,
1722  "Access-Control-Allow-Origin",
1723  "*");
1724  MHD_add_response_header (response,
1725  "Access-Control-Allow-Methods",
1726  "GET, PUT, OPTIONS");
1727  MHD_add_response_header (response,
1728  "Access-Control-Max-Age",
1729  "86400");
1730 }
1731 
1732 
1746 static int
1747 server_access_cb (void *cls,
1748  struct MHD_Connection *mhd_connection,
1749  const char *url,
1750  const char *method,
1751  const char *version,
1752  const char *upload_data,
1753  size_t *upload_data_size,
1754  void **httpSessionCache)
1755 {
1756  struct HTTP_Server_Plugin *plugin = cls;
1757  struct ServerRequest *sc = *httpSessionCache;
1758  struct GNUNET_ATS_Session *s;
1759  struct MHD_Response *response;
1760  int res = MHD_YES;
1761 
1763  _ (
1764  "Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
1765  sc,
1766  plugin->cur_request,
1767  plugin->max_request,
1768  method,
1769  version,
1770  url,
1771  (*upload_data_size));
1772  if (NULL == sc)
1773  {
1774  /* CORS pre-flight request */
1775  if (0 == strcmp (MHD_HTTP_METHOD_OPTIONS, method))
1776  {
1777  response = MHD_create_response_from_buffer (0, NULL,
1778  MHD_RESPMEM_PERSISTENT);
1779  add_cors_headers (response);
1780  res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1781  MHD_destroy_response (response);
1782  return res;
1783  }
1784  /* new connection */
1785  sc = server_lookup_connection (plugin, mhd_connection, url, method);
1786  if (NULL != sc)
1787  {
1788  /* attach to new / existing session */
1789  (*httpSessionCache) = sc;
1790  }
1791  else
1792  {
1793  /* existing session already has matching connection, refuse */
1794  response = MHD_create_response_from_buffer (strlen (HTTP_ERROR_RESPONSE),
1796  MHD_RESPMEM_PERSISTENT);
1797  MHD_add_response_header (response,
1798  MHD_HTTP_HEADER_CONTENT_TYPE,
1799  "text/html");
1800  add_cors_headers (response);
1801  res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1802  MHD_destroy_response (response);
1803  return res;
1804  }
1805  }
1806  /* 'old' connection */
1807  if (NULL == (s = sc->session))
1808  {
1809  /* Session was already disconnected;
1810  sent HTTP/1.1: 200 OK as response */
1811  response = MHD_create_response_from_buffer (strlen ("Thank you!"),
1812  "Thank you!",
1813  MHD_RESPMEM_PERSISTENT);
1814  add_cors_headers (response);
1815  MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1816  MHD_destroy_response (response);
1817  return MHD_YES;
1818  }
1819 
1820  if (sc->direction == _SEND)
1821  {
1822  response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN, 32 * 1024,
1823  &server_send_callback, sc,
1824  NULL);
1825  add_cors_headers (response);
1826  MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1827  MHD_destroy_response (response);
1828  return MHD_YES;
1829  }
1830  if (sc->direction == _RECEIVE)
1831  {
1832  if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
1833  {
1834  /* (*upload_data_size == 0) first callback when header are passed */
1836  "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
1837  s, sc,
1838  GNUNET_i2s (&s->target),
1840  s->address->address,
1841  s->address->address_length));
1842  sc->connected = GNUNET_YES;
1843  return MHD_YES;
1844  }
1845  else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
1846  {
1847  /* (*upload_data_size == 0) when upload is complete */
1849  "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
1850  s, sc,
1851  GNUNET_i2s (&s->target),
1853  s->address->address,
1854  s->address->address_length));
1855  sc->connected = GNUNET_NO;
1856  /* Sent HTTP/1.1: 200 OK as PUT Response\ */
1857  response = MHD_create_response_from_buffer (strlen ("Thank you!"),
1858  "Thank you!",
1859  MHD_RESPMEM_PERSISTENT);
1860  add_cors_headers (response);
1861  MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1862  MHD_destroy_response (response);
1863  return MHD_YES;
1864  }
1865  else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
1866  {
1867  struct GNUNET_TIME_Relative delay;
1868 
1869  /* (*upload_data_size > 0) for every segment received */
1871  "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
1872  s, sc,
1873  GNUNET_i2s (&s->target),
1875  s->address->address,
1876  s->address->address_length),
1877  *upload_data_size);
1879  if (0 == delay.rel_value_us)
1880  {
1882  "PUT with %u bytes forwarded to MST\n",
1883  *upload_data_size);
1884  if (s->msg_tk == NULL)
1885  {
1887  s);
1888  }
1890  upload_data,
1891  *upload_data_size,
1892  GNUNET_NO, GNUNET_NO);
1893  server_mhd_connection_timeout (plugin, s,
1895  rel_value_us / 1000LL
1896  / 1000LL);
1897  (*upload_data_size) = 0;
1898  }
1899  else
1900  {
1901  /* delay processing */
1903  "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
1904  s,
1905  sc,
1907  GNUNET_YES));
1908  GNUNET_assert (s->server_recv->mhd_conn == mhd_connection);
1909  MHD_suspend_connection (s->server_recv->mhd_conn);
1910  s->server_recv->suspended = true;
1911  if (NULL == s->recv_wakeup_task)
1912  s->recv_wakeup_task
1914  &server_wake_up,
1915  s);
1916  }
1917  return MHD_YES;
1918  }
1919  else
1920  {
1921  GNUNET_break (0);
1922  return MHD_NO;
1923  }
1924  }
1925  return res;
1926 }
1927 
1928 
1936 static void
1938  struct MHD_Connection *connection,
1939  void **httpSessionCache)
1940 {
1941  struct HTTP_Server_Plugin *plugin = cls;
1942  struct ServerRequest *sc = *httpSessionCache;
1943 
1945  "Disconnect for connection %p\n",
1946  sc);
1947  if (NULL == sc)
1948  {
1949  /* CORS pre-flight request finished */
1950  return;
1951  }
1952 
1953  if (NULL != sc->session)
1954  {
1955  if (sc->direction == _SEND)
1956  {
1958  "Peer `%s' connection %p, GET on address `%s' disconnected\n",
1959  GNUNET_i2s (&sc->session->target),
1960  sc->session->server_send,
1962  sc->session->address->address,
1963  sc->session->address->
1964  address_length));
1965 
1966  sc->session->server_send = NULL;
1967  }
1968  else if (sc->direction == _RECEIVE)
1969  {
1971  "Peer `%s' connection %p PUT on address `%s' disconnected\n",
1972  GNUNET_i2s (&sc->session->target),
1973  sc->session->server_recv,
1975  sc->session->address->address,
1976  sc->session->address->
1977  address_length));
1978  sc->session->server_recv = NULL;
1979  if (NULL != sc->session->msg_tk)
1980  {
1982  sc->session->msg_tk = NULL;
1983  }
1984  }
1985  }
1986  GNUNET_free (sc);
1987  plugin->cur_request--;
1988 }
1989 
1990 
2000 static void
2002  struct MHD_Connection *connection,
2003  void **socket_context,
2004  enum MHD_ConnectionNotificationCode toe)
2005 {
2006  struct HTTP_Server_Plugin *plugin = cls;
2007  const union MHD_ConnectionInfo *info;
2008 
2009  if (MHD_CONNECTION_NOTIFY_STARTED == toe)
2010  return;
2011 
2012  /* Reschedule to remove closed socket from our select set */
2013  info = MHD_get_connection_info (connection,
2014  MHD_CONNECTION_INFO_DAEMON);
2015  GNUNET_assert (NULL != info);
2016  server_reschedule (plugin,
2017  info->daemon,
2018  GNUNET_YES);
2019 }
2020 
2021 
2030 static int
2031 server_accept_cb (void *cls,
2032  const struct sockaddr *addr,
2033  socklen_t addr_len)
2034 {
2035  struct HTTP_Server_Plugin *plugin = cls;
2036 
2037  if (plugin->cur_request <= plugin->max_request)
2038  {
2040  _ ("Accepting connection (%u of %u) from `%s'\n"),
2041  plugin->cur_request, plugin->max_request,
2042  GNUNET_a2s (addr, addr_len));
2043  return MHD_YES;
2044  }
2045  else
2046  {
2048  _ (
2049  "Server reached maximum number connections (%u), rejecting new connection\n"),
2050  plugin->max_request);
2051  return MHD_NO;
2052  }
2053 }
2054 
2055 
2064 static void
2066  const char *fmt,
2067  va_list ap)
2068 {
2069  char text[1024];
2070 
2071  vsnprintf (text,
2072  sizeof(text),
2073  fmt,
2074  ap);
2076  "Server: %s\n",
2077  text);
2078 }
2079 
2080 
2081 #if BUILD_HTTPS
2082 
2088 static char *
2089 server_load_file (const char *file)
2090 {
2091  struct GNUNET_DISK_FileHandle *gn_file;
2092  uint64_t fsize;
2093  char *text = NULL;
2094 
2095  if (GNUNET_OK != GNUNET_DISK_file_size (file,
2096  &fsize, GNUNET_NO, GNUNET_YES))
2097  return NULL;
2098  text = GNUNET_malloc (fsize + 1);
2099  gn_file =
2102  if (NULL == gn_file)
2103  {
2104  GNUNET_free (text);
2105  return NULL;
2106  }
2107  if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
2108  {
2109  GNUNET_free (text);
2110  GNUNET_DISK_file_close (gn_file);
2111  return NULL;
2112  }
2113  text[fsize] = '\0';
2114  GNUNET_DISK_file_close (gn_file);
2115  return text;
2116 }
2117 
2118 
2119 #endif
2120 
2121 
2122 #if BUILD_HTTPS
2123 
2129 static int
2130 server_load_certificate (struct HTTP_Server_Plugin *plugin)
2131 {
2132  int res = GNUNET_OK;
2133  char *key_file;
2134  char *cert_file;
2135 
2136 
2137  if (GNUNET_OK !=
2139  plugin->name,
2140  "KEY_FILE", &key_file))
2141  {
2143  plugin->name, "CERT_FILE");
2144  return GNUNET_SYSERR;
2145  }
2146  if (GNUNET_OK !=
2148  plugin->name,
2149  "CERT_FILE", &cert_file))
2150  {
2152  plugin->name, "CERT_FILE");
2153  GNUNET_free (key_file);
2154  return GNUNET_SYSERR;
2155  }
2156  /* Get crypto init string from config. If not present, use
2157  * default values */
2158  if (GNUNET_OK ==
2160  plugin->name,
2161  "CRYPTO_INIT",
2162  &plugin->crypto_init))
2164  "Using crypto init string `%s'\n",
2165  plugin->crypto_init);
2166  else
2168  "Using default crypto init string \n");
2169 
2170  /* read key & certificates from file */
2172  "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
2173  key_file, cert_file);
2174 
2175  plugin->key = server_load_file (key_file);
2176  plugin->cert = server_load_file (cert_file);
2177 
2178  if ((plugin->key == NULL) || (plugin->cert == NULL))
2179  {
2180  struct GNUNET_OS_Process *cert_creation;
2181 
2182  GNUNET_free_non_null (plugin->key);
2183  plugin->key = NULL;
2184  GNUNET_free_non_null (plugin->cert);
2185  plugin->cert = NULL;
2186 
2188  "No usable TLS certificate found, creating certificate\n");
2189  errno = 0;
2190  cert_creation =
2192  NULL, NULL, NULL,
2193  "gnunet-transport-certificate-creation",
2194  "gnunet-transport-certificate-creation",
2195  key_file,
2196  cert_file,
2197  NULL);
2198  if (NULL == cert_creation)
2199  {
2201  _ (
2202  "Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
2203  GNUNET_free (key_file);
2204  GNUNET_free (cert_file);
2205 
2206  GNUNET_free_non_null (plugin->key);
2207  plugin->key = NULL;
2208  GNUNET_free_non_null (plugin->cert);
2209  plugin->cert = NULL;
2210  GNUNET_free_non_null (plugin->crypto_init);
2211  plugin->crypto_init = NULL;
2212 
2213  return GNUNET_SYSERR;
2214  }
2215  GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
2216  GNUNET_OS_process_destroy (cert_creation);
2217 
2218  plugin->key = server_load_file (key_file);
2219  plugin->cert = server_load_file (cert_file);
2220  }
2221 
2222  if ((plugin->key == NULL) || (plugin->cert == NULL))
2223  {
2225  _ (
2226  "No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
2227  key_file, cert_file);
2228  GNUNET_free (key_file);
2229  GNUNET_free (cert_file);
2230 
2231  GNUNET_free_non_null (plugin->key);
2232  plugin->key = NULL;
2233  GNUNET_free_non_null (plugin->cert);
2234  plugin->cert = NULL;
2235  GNUNET_free_non_null (plugin->crypto_init);
2236  plugin->crypto_init = NULL;
2237 
2238  return GNUNET_SYSERR;
2239  }
2240  GNUNET_free (key_file);
2241  GNUNET_free (cert_file);
2243  "TLS certificate loaded\n");
2244  return res;
2245 }
2246 
2247 
2248 #endif
2249 
2250 
2260 static struct MHD_Daemon *
2262  const struct sockaddr_in *addr,
2263  int v6)
2264 {
2265  struct MHD_Daemon *server;
2266  unsigned int timeout;
2267 
2268 #if MHD_VERSION >= 0x00090E00
2269  timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2271  "MHD can set timeout per connection! Default time out %u sec.\n",
2272  timeout);
2273 #else
2274  timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2276  "MHD cannot set timeout per connection! Default time out %u sec.\n",
2277  timeout);
2278 #endif
2279  server = MHD_start_daemon (
2280 #if VERBOSE_SERVER
2281  MHD_USE_DEBUG |
2282 #endif
2283 #if BUILD_HTTPS
2284  MHD_USE_SSL |
2285 #endif
2286  MHD_USE_SUSPEND_RESUME
2287  | v6,
2288  plugin->port,
2289  &server_accept_cb, plugin,
2290  &server_access_cb, plugin,
2291  MHD_OPTION_SOCK_ADDR,
2292  addr,
2293  MHD_OPTION_CONNECTION_LIMIT,
2294  (unsigned int) plugin->max_request,
2295 #if BUILD_HTTPS
2296  MHD_OPTION_HTTPS_PRIORITIES,
2297  plugin->crypto_init,
2298  MHD_OPTION_HTTPS_MEM_KEY,
2299  plugin->key,
2300  MHD_OPTION_HTTPS_MEM_CERT,
2301  plugin->cert,
2302 #endif
2303  MHD_OPTION_CONNECTION_TIMEOUT,
2304  timeout,
2305  MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2306  (size_t) (2
2308  MHD_OPTION_NOTIFY_COMPLETED,
2309  &server_disconnect_cb, plugin,
2310  MHD_OPTION_NOTIFY_CONNECTION,
2311  &server_connection_cb, plugin,
2312  MHD_OPTION_EXTERNAL_LOGGER,
2313  &server_log, NULL,
2314  MHD_OPTION_END);
2315 #ifdef TCP_STEALTH
2316  if ((NULL != server) &&
2317  (0 != (plugin->options & HTTP_OPTIONS_TCP_STEALTH)))
2318  {
2319  const union MHD_DaemonInfo *di;
2320 
2321  di = MHD_get_daemon_info (server,
2322  MHD_DAEMON_INFO_LISTEN_FD,
2323  NULL);
2324  if ((0 != setsockopt ((int) di->listen_fd,
2325  IPPROTO_TCP,
2326  TCP_STEALTH,
2327  plugin->env->my_identity,
2328  sizeof(struct GNUNET_PeerIdentity))))
2329  {
2331  _ ("TCP_STEALTH not supported on this platform.\n"));
2332  MHD_stop_daemon (server);
2333  server = NULL;
2334  }
2335  }
2336 #endif
2337  return server;
2338 }
2339 
2340 
2347 static int
2349 {
2350  const char *msg;
2351 
2352  GNUNET_assert (NULL != plugin);
2353 #if BUILD_HTTPS
2354  if (GNUNET_SYSERR == server_load_certificate (plugin))
2355  {
2357  _ (
2358  "Could not load or create server certificate! Loading plugin failed!\n"));
2359  return GNUNET_SYSERR;
2360  }
2361 #endif
2362 
2363 
2364  plugin->server_v4 = NULL;
2365  if (GNUNET_YES == plugin->use_ipv4)
2366  {
2367  plugin->server_v4
2368  = run_mhd_start_daemon (plugin,
2369  (const struct
2370  sockaddr_in *) plugin->server_addr_v4,
2371  MHD_NO_FLAG);
2372 
2373  if (NULL == plugin->server_v4)
2374  {
2376  "Failed to start %s IPv4 server component on port %u\n",
2377  plugin->name,
2378  plugin->port);
2379  }
2380  else
2381  server_reschedule (plugin,
2382  plugin->server_v4,
2383  GNUNET_NO);
2384  }
2385 
2386 
2387  plugin->server_v6 = NULL;
2388  if (GNUNET_YES == plugin->use_ipv6)
2389  {
2390  plugin->server_v6
2391  = run_mhd_start_daemon (plugin,
2392  (const struct
2393  sockaddr_in *) plugin->server_addr_v6,
2394  MHD_USE_IPv6);
2395  if (NULL == plugin->server_v6)
2396  {
2398  "Failed to start %s IPv6 server component on port %u\n",
2399  plugin->name,
2400  plugin->port);
2401  }
2402  else
2403  {
2404  server_reschedule (plugin,
2405  plugin->server_v6,
2406  GNUNET_NO);
2407  }
2408  }
2409  msg = "No";
2410  if ((NULL == plugin->server_v6) &&
2411  (NULL == plugin->server_v4))
2412  {
2414  "%s %s server component started on port %u\n",
2415  msg,
2416  plugin->name,
2417  plugin->port);
2418  return GNUNET_SYSERR;
2419  }
2420  if ((NULL != plugin->server_v6) &&
2421  (NULL != plugin->server_v4))
2422  msg = "IPv4 and IPv6";
2423  else if (NULL != plugin->server_v6)
2424  msg = "IPv6";
2425  else if (NULL != plugin->server_v4)
2426  msg = "IPv4";
2428  "%s %s server component started on port %u\n",
2429  msg,
2430  plugin->name,
2431  plugin->port);
2432  return GNUNET_OK;
2433 }
2434 
2435 
2444 static void
2446  int add_remove,
2447  const struct sockaddr *addr,
2448  socklen_t addrlen)
2449 {
2450  struct HTTP_Server_Plugin *plugin = cls;
2451  struct GNUNET_HELLO_Address *address;
2452  struct HttpAddressWrapper *w = NULL;
2453 
2454  w = GNUNET_new (struct HttpAddressWrapper);
2456  addr,
2457  addrlen);
2458  if (NULL == w->address)
2459  {
2460  GNUNET_free (w);
2461  return;
2462  }
2464 
2466  plugin->addr_tail,
2467  w);
2469  "Notifying transport to add address `%s'\n",
2471  w->address,
2472  w->addrlen));
2473  /* modify our published address list */
2474 #if BUILD_HTTPS
2475  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
2476  "https_client", w->address,
2477  w->addrlen,
2479 #else
2480  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
2481  "http_client", w->address,
2482  w->addrlen,
2484 #endif
2485 
2486  plugin->env->notify_address (plugin->env->cls,
2487  add_remove,
2488  address);
2489  GNUNET_HELLO_address_free (address);
2490 }
2491 
2492 
2501 static void
2503  int add_remove,
2504  const struct sockaddr *addr,
2505  socklen_t addrlen)
2506 {
2507  struct HTTP_Server_Plugin *plugin = cls;
2508  struct GNUNET_HELLO_Address *address;
2509  struct HttpAddressWrapper *w = plugin->addr_head;
2510  size_t saddr_len;
2511  void *saddr;
2512 
2513  saddr = http_common_address_from_socket (plugin->protocol,
2514  addr,
2515  addrlen);
2516  if (NULL == saddr)
2517  return;
2518  saddr_len = http_common_address_get_size (saddr);
2519 
2520  while (NULL != w)
2521  {
2522  if (GNUNET_YES ==
2524  w->addrlen,
2525  saddr,
2526  saddr_len))
2527  break;
2528  w = w->next;
2529  }
2530  GNUNET_free (saddr);
2531 
2532  if (NULL == w)
2533  return;
2534 
2536  "Notifying transport to remove address `%s'\n",
2538  w->address,
2539  w->addrlen));
2541  plugin->addr_tail,
2542  w);
2543  /* modify our published address list */
2544 #if BUILD_HTTPS
2545  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
2546  "https_client", w->address,
2547  w->addrlen,
2549 #else
2550  address = GNUNET_HELLO_address_allocate (plugin->env->my_identity,
2551  "http_client", w->address,
2552  w->addrlen,
2554 #endif
2555  plugin->env->notify_address (plugin->env->cls, add_remove, address);
2556  GNUNET_HELLO_address_free (address);
2557  GNUNET_free (w->address);
2558  GNUNET_free (w);
2559 }
2560 
2561 
2574 static void
2576  void **app_ctx,
2577  int add_remove,
2579  const struct sockaddr *addr,
2580  socklen_t addrlen)
2581 {
2582  struct HTTP_Server_Plugin *plugin = cls;
2583 
2584  (void) app_ctx;
2586  "NAT called to %s address `%s'\n",
2587  (add_remove == GNUNET_NO) ? "remove" : "add",
2588  GNUNET_a2s (addr, addrlen));
2589 
2590  if (AF_INET == addr->sa_family)
2591  {
2592  struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
2593 
2594  if (GNUNET_NO == plugin->use_ipv4)
2595  return;
2596 
2597  if ((NULL != plugin->server_addr_v4) &&
2598  (0 != memcmp (&plugin->server_addr_v4->sin_addr,
2599  &s4->sin_addr,
2600  sizeof(struct in_addr))))
2601  {
2603  "Skipping address `%s' (not bindto address)\n",
2604  GNUNET_a2s (addr, addrlen));
2605  return;
2606  }
2607  }
2608 
2609  if (AF_INET6 == addr->sa_family)
2610  {
2611  struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
2612  if (GNUNET_NO == plugin->use_ipv6)
2613  return;
2614 
2615  if ((NULL != plugin->server_addr_v6) &&
2616  (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
2617  &s6->sin6_addr, sizeof(struct in6_addr))))
2618  {
2620  "Skipping address `%s' (not bindto address)\n",
2621  GNUNET_a2s (addr, addrlen));
2622  return;
2623  }
2624  }
2625 
2626  switch (add_remove)
2627  {
2628  case GNUNET_YES:
2629  server_add_address (cls, add_remove, addr, addrlen);
2630  break;
2631 
2632  case GNUNET_NO:
2633  server_remove_address (cls, add_remove, addr, addrlen);
2634  break;
2635  }
2636 }
2637 
2638 
2649 static int
2651  const char *service_name,
2652  const struct GNUNET_CONFIGURATION_Handle *cfg,
2653  struct sockaddr ***addrs,
2654  socklen_t **addr_lens)
2655 {
2656  int disablev6;
2657  unsigned long long port;
2658  struct addrinfo hints;
2659  struct addrinfo *res;
2660  struct addrinfo *pos;
2661  struct addrinfo *next;
2662  unsigned int i;
2663  int resi;
2664  int ret;
2665  struct sockaddr **saddrs;
2666  socklen_t *saddrlens;
2667  char *hostname;
2668 
2669  *addrs = NULL;
2670  *addr_lens = NULL;
2671 
2672  disablev6 = ! plugin->use_ipv6;
2673 
2674  port = 0;
2675  if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
2676  {
2678  GNUNET_CONFIGURATION_get_value_number (cfg, service_name,
2679  "PORT", &port));
2680  if (port > 65535)
2681  {
2683  _ (
2684  "Require valid port number for service in configuration!\n"));
2685  return GNUNET_SYSERR;
2686  }
2687  }
2688  if (0 == port)
2689  {
2691  "Starting in listen only mode\n");
2692  return -1; /* listen only */
2693  }
2694 
2695 
2696  if (GNUNET_CONFIGURATION_have_value (cfg, service_name,
2697  "BINDTO"))
2698  {
2700  GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
2701  "BINDTO", &hostname));
2702  }
2703  else
2704  hostname = NULL;
2705 
2706  if (NULL != hostname)
2707  {
2709  "Resolving `%s' since that is where `%s' will bind to.\n",
2710  hostname, service_name);
2711  memset (&hints, 0, sizeof(struct addrinfo));
2712  if (disablev6)
2713  hints.ai_family = AF_INET;
2714  if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
2715  (NULL == res))
2716  {
2718  _ ("Failed to resolve `%s': %s\n"),
2719  hostname,
2720  gai_strerror (ret));
2721  GNUNET_free (hostname);
2722  return GNUNET_SYSERR;
2723  }
2724  next = res;
2725  i = 0;
2726  while (NULL != (pos = next))
2727  {
2728  next = pos->ai_next;
2729  if ((disablev6) && (pos->ai_family == AF_INET6))
2730  continue;
2731  i++;
2732  }
2733  if (0 == i)
2734  {
2736  _ ("Failed to find %saddress for `%s'.\n"),
2737  disablev6 ? "IPv4 " : "", hostname);
2738  freeaddrinfo (res);
2739  GNUNET_free (hostname);
2740  return GNUNET_SYSERR;
2741  }
2742  resi = i;
2743  saddrs = GNUNET_malloc ((resi + 1) * sizeof(struct sockaddr *));
2744  saddrlens = GNUNET_malloc ((resi + 1) * sizeof(socklen_t));
2745  i = 0;
2746  next = res;
2747  while (NULL != (pos = next))
2748  {
2749  next = pos->ai_next;
2750  if ((disablev6) && (pos->ai_family == AF_INET6))
2751  continue;
2752  if ((pos->ai_protocol != IPPROTO_TCP) && (0 != pos->ai_protocol))
2753  continue; /* not TCP */
2754  if ((pos->ai_socktype != SOCK_STREAM) && (0 != pos->ai_socktype))
2755  continue; /* huh? */
2757  "Service will bind to `%s'\n",
2758  GNUNET_a2s (pos->ai_addr,
2759  pos->ai_addrlen));
2760  if (pos->ai_family == AF_INET)
2761  {
2762  GNUNET_assert (pos->ai_addrlen == sizeof(struct sockaddr_in));
2763  saddrlens[i] = pos->ai_addrlen;
2764  saddrs[i] = GNUNET_malloc (saddrlens[i]);
2765  GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2766  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2767  }
2768  else
2769  {
2770  GNUNET_assert (pos->ai_family == AF_INET6);
2771  GNUNET_assert (pos->ai_addrlen == sizeof(struct sockaddr_in6));
2772  saddrlens[i] = pos->ai_addrlen;
2773  saddrs[i] = GNUNET_malloc (saddrlens[i]);
2774  GNUNET_memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2775  ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2776  }
2777  i++;
2778  }
2779  GNUNET_free (hostname);
2780  freeaddrinfo (res);
2781  resi = i;
2782  }
2783  else
2784  {
2785  /* will bind against everything, just set port */
2786  if (disablev6)
2787  {
2788  /* V4-only */
2789  resi = 1;
2790  i = 0;
2791  saddrs = GNUNET_malloc ((resi + 1) * sizeof(struct sockaddr *));
2792  saddrlens = GNUNET_malloc ((resi + 1) * sizeof(socklen_t));
2793 
2794  saddrlens[i] = sizeof(struct sockaddr_in);
2795  saddrs[i] = GNUNET_malloc (saddrlens[i]);
2796 #if HAVE_SOCKADDR_IN_SIN_LEN
2797  ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
2798 #endif
2799  ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2800  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2801  }
2802  else
2803  {
2804  /* dual stack */
2805  resi = 2;
2806  saddrs = GNUNET_malloc ((resi + 1) * sizeof(struct sockaddr *));
2807  saddrlens = GNUNET_malloc ((resi + 1) * sizeof(socklen_t));
2808  i = 0;
2809  saddrlens[i] = sizeof(struct sockaddr_in6);
2810  saddrs[i] = GNUNET_malloc (saddrlens[i]);
2811 #if HAVE_SOCKADDR_IN_SIN_LEN
2812  ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
2813 #endif
2814  ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
2815  ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2816  i++;
2817  saddrlens[i] = sizeof(struct sockaddr_in);
2818  saddrs[i] = GNUNET_malloc (saddrlens[i]);
2819 #if HAVE_SOCKADDR_IN_SIN_LEN
2820  ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
2821 #endif
2822  ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2823  ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2824  }
2825  }
2826  *addrs = saddrs;
2827  *addr_lens = saddrlens;
2828  return resi;
2829 }
2830 
2831 
2837 static void
2839 {
2840  int res = GNUNET_OK;
2841  struct sockaddr **addrs;
2842  socklen_t *addrlens;
2843 
2844  res = server_get_addresses (plugin,
2845  plugin->name,
2846  plugin->env->cfg,
2847  &addrs, &addrlens);
2849  _ ("Found %u addresses to report to NAT service\n"),
2850  res);
2851 
2852  if (GNUNET_SYSERR == res)
2853  {
2854  plugin->nat = NULL;
2855  return;
2856  }
2857 
2858  plugin->nat
2859  = GNUNET_NAT_register (plugin->env->cfg,
2860  plugin->name,
2861  IPPROTO_TCP,
2862  (unsigned int) res,
2863  (const struct sockaddr **) addrs,
2864  addrlens,
2866  NULL,
2867  plugin);
2868  while (res > 0)
2869  {
2870  res--;
2871  GNUNET_assert (NULL != addrs[res]);
2872  GNUNET_free (addrs[res]);
2873  }
2874  GNUNET_free_non_null (addrs);
2875  GNUNET_free_non_null (addrlens);
2876 }
2877 
2878 
2884 static void
2886 {
2887  struct HttpAddressWrapper *w;
2888 
2889  /* Stop NAT handle */
2890  if (NULL != plugin->nat)
2891  {
2892  GNUNET_NAT_unregister (plugin->nat);
2893  plugin->nat = NULL;
2894  }
2895  /* Clean up addresses */
2896  while (NULL != plugin->addr_head)
2897  {
2898  w = plugin->addr_head;
2900  plugin->addr_tail,
2901  w);
2902  GNUNET_free (w->address);
2903  GNUNET_free (w);
2904  }
2905 }
2906 
2907 
2914 static int
2916 {
2917  struct GNUNET_NETWORK_Handle *desc = NULL;
2918  int res = GNUNET_NO;
2919 
2920  /* Probe IPv6 support */
2921  desc = GNUNET_NETWORK_socket_create (PF_INET6,
2922  SOCK_STREAM,
2923  0);
2924  if (NULL == desc)
2925  {
2926  if ((errno == ENOBUFS) ||
2927  (errno == ENOMEM) ||
2928  (errno == ENFILE) ||
2929  (errno == EACCES))
2930  {
2932  "socket");
2933  }
2935  _ ("Disabling IPv6 since it is not supported on this system!\n"));
2936  res = GNUNET_NO;
2937  }
2938  else
2939  {
2942  desc = NULL;
2943  res = GNUNET_YES;
2944  }
2946  "Testing IPv6 on this system: %s\n",
2947  (res == GNUNET_YES) ? "successful" : "failed");
2948  return res;
2949 }
2950 
2951 
2957 static void
2959 {
2960  struct HTTP_Server_Plugin *plugin = cls;
2961  struct HttpAddress *ext_addr;
2962  size_t ext_addr_len;
2963  unsigned int urlen;
2964  char *url;
2965 
2966  plugin->notify_ext_task = NULL;
2967  GNUNET_asprintf (&url,
2968  "%s://%s",
2969  plugin->protocol,
2970  plugin->external_hostname);
2971  urlen = strlen (url) + 1;
2972  ext_addr = GNUNET_malloc (sizeof(struct HttpAddress) + urlen);
2973  ext_addr->options = htonl (plugin->options);
2974  ext_addr->urlen = htonl (urlen);
2975  ext_addr_len = sizeof(struct HttpAddress) + urlen;
2976  GNUNET_memcpy (&ext_addr[1], url, urlen);
2977  GNUNET_free (url);
2978 
2980  "Notifying transport about external hostname address `%s'\n",
2981  plugin->external_hostname);
2982 
2983 #if BUILD_HTTPS
2984  if (GNUNET_YES == plugin->verify_external_hostname)
2986  "Enabling SSL verification for external hostname address `%s'\n",
2987  plugin->external_hostname);
2988  plugin->ext_addr
2990  "https_client",
2991  ext_addr,
2992  ext_addr_len,
2994  plugin->env->notify_address (plugin->env->cls,
2995  GNUNET_YES,
2996  plugin->ext_addr);
2997  GNUNET_free (ext_addr);
2998 #else
2999  plugin->ext_addr
3001  "http_client",
3002  ext_addr,
3003  ext_addr_len,
3005  plugin->env->notify_address (plugin->env->cls,
3006  GNUNET_YES,
3007  plugin->ext_addr);
3008  GNUNET_free (ext_addr);
3009 #endif
3010 }
3011 
3012 
3019 static int
3021 {
3022  unsigned long long port;
3023  unsigned long long max_connections;
3024  char *bind4_address = NULL;
3025  char *bind6_address = NULL;
3026  char *eh_tmp = NULL;
3027  int external_hostname_use_port;
3028 
3029  /* Use IPv4? */
3031  (plugin->env->cfg, plugin->name, "USE_IPv4"))
3032  {
3033  plugin->use_ipv4 =
3035  plugin->name,
3036  "USE_IPv4");
3037  }
3038  else
3039  plugin->use_ipv4 = GNUNET_YES;
3041  _ ("IPv4 support is %s\n"),
3042  (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
3043 
3044  /* Use IPv6? */
3046  (plugin->env->cfg, plugin->name, "USE_IPv6"))
3047  {
3048  plugin->use_ipv6 =
3050  plugin->name,
3051  "USE_IPv6");
3052  }
3053  else
3054  plugin->use_ipv6 = GNUNET_YES;
3056  _ ("IPv6 support is %s\n"),
3057  (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
3058 
3059  if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
3060  {
3062  _ ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"));
3063  return GNUNET_SYSERR;
3064  }
3065 
3066  /* Reading port number from config file */
3067  if ((GNUNET_OK !=
3069  plugin->name,
3070  "PORT", &port)) || (port > 65535))
3071  {
3073  _ ("Port is required! Fix in configuration\n"));
3074  return GNUNET_SYSERR;
3075  }
3076  plugin->port = port;
3077 
3079  _ ("Using port %u\n"), plugin->port);
3080 
3081  if ((plugin->use_ipv4 == GNUNET_YES) &&
3082  (GNUNET_YES ==
3084  plugin->name,
3085  "BINDTO",
3086  &bind4_address)))
3087  {
3089  "Binding %s plugin to specific IPv4 address: `%s'\n",
3090  plugin->protocol,
3091  bind4_address);
3092  plugin->server_addr_v4 = GNUNET_new (struct sockaddr_in);
3093  if (1 != inet_pton (AF_INET,
3094  bind4_address,
3095  &plugin->server_addr_v4->sin_addr))
3096  {
3098  _ ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
3099  bind4_address);
3100  GNUNET_free (bind4_address);
3101  GNUNET_free (plugin->server_addr_v4);
3102  plugin->server_addr_v4 = NULL;
3103  return GNUNET_SYSERR;
3104  }
3105  else
3106  {
3108  "Binding to IPv4 address %s\n",
3109  bind4_address);
3110  plugin->server_addr_v4->sin_family = AF_INET;
3111  plugin->server_addr_v4->sin_port = htons (plugin->port);
3112  }
3113  GNUNET_free (bind4_address);
3114  }
3115 
3116  if ((plugin->use_ipv6 == GNUNET_YES) &&
3117  (GNUNET_YES ==
3119  plugin->name,
3120  "BINDTO6",
3121  &bind6_address)))
3122  {
3124  "Binding %s plugin to specific IPv6 address: `%s'\n",
3125  plugin->protocol, bind6_address);
3126  plugin->server_addr_v6 = GNUNET_new (struct sockaddr_in6);
3127  if (1 !=
3128  inet_pton (AF_INET6,
3129  bind6_address,
3130  &plugin->server_addr_v6->sin6_addr))
3131  {
3133  _ ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
3134  bind6_address);
3135  GNUNET_free (bind6_address);
3136  GNUNET_free (plugin->server_addr_v6);
3137  plugin->server_addr_v6 = NULL;
3138  return GNUNET_SYSERR;
3139  }
3140  else
3141  {
3143  "Binding to IPv6 address %s\n",
3144  bind6_address);
3145  plugin->server_addr_v6->sin6_family = AF_INET6;
3146  plugin->server_addr_v6->sin6_port = htons (plugin->port);
3147  }
3148  GNUNET_free (bind6_address);
3149  }
3150 
3152 #if BUILD_HTTPS
3153  plugin->verify_external_hostname
3155  plugin->name,
3156  "VERIFY_EXTERNAL_HOSTNAME");
3157  if (GNUNET_SYSERR == plugin->verify_external_hostname)
3159  if (GNUNET_YES == plugin->verify_external_hostname)
3161 #endif
3162  external_hostname_use_port
3164  plugin->name,
3165  "EXTERNAL_HOSTNAME_USE_PORT");
3166  if (GNUNET_SYSERR == external_hostname_use_port)
3167  external_hostname_use_port = GNUNET_NO;
3168 
3169 
3170  if (GNUNET_YES ==
3172  plugin->name,
3173  "EXTERNAL_HOSTNAME",
3174  &eh_tmp))
3175  {
3176  char *tmp;
3177  char *pos = NULL;
3178  char *pos_url = NULL;
3179 
3180  if (NULL != strstr (eh_tmp, "://"))
3181  tmp = &strstr (eh_tmp, "://")[3];
3182  else
3183  tmp = eh_tmp;
3184 
3185  if (GNUNET_YES == external_hostname_use_port)
3186  {
3187  if ((strlen (tmp) > 1) && (NULL != (pos = strchr (tmp, '/'))))
3188  {
3189  pos_url = pos + 1;
3190  pos[0] = '\0';
3192  "%s:%u/%s",
3193  tmp,
3194  (uint16_t) port,
3195  pos_url);
3196  }
3197  else
3199  "%s:%u",
3200  tmp,
3201  (uint16_t) port);
3202  }
3203  else
3204  plugin->external_hostname = GNUNET_strdup (tmp);
3205  GNUNET_free (eh_tmp);
3206 
3208  _ ("Using external hostname `%s'\n"),
3209  plugin->external_hostname);
3212  plugin);
3213 
3214  /* Use only configured external hostname */
3216  (plugin->env->cfg,
3217  plugin->name,
3218  "EXTERNAL_HOSTNAME_ONLY"))
3219  {
3220  plugin->external_only =
3222  plugin->name,
3223  "EXTERNAL_HOSTNAME_ONLY");
3224  }
3225  else
3226  plugin->external_only = GNUNET_NO;
3227 
3228  if (GNUNET_YES == plugin->external_only)
3230  _ ("Notifying transport only about hostname `%s'\n"),
3231  plugin->external_hostname);
3232  }
3233  else
3235  "No external hostname configured\n");
3236 
3237  /* Optional parameters */
3238  if (GNUNET_OK !=
3240  plugin->name,
3241  "MAX_CONNECTIONS",
3242  &max_connections))
3243  max_connections = 128;
3244  plugin->max_request = max_connections;
3245 
3247  _ ("Maximum number of connections is %u\n"),
3248  plugin->max_request);
3249 
3250  plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
3251 
3252  return GNUNET_OK;
3253 }
3254 
3255 
3262 void *
3264 {
3265  struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
3266  struct HTTP_Server_Plugin *plugin = api->cls;
3267 
3268  if (NULL == api->cls)
3269  {
3270  /* Free for stub mode */
3271  GNUNET_free (api);
3272  return NULL;
3273  }
3274  plugin->in_shutdown = GNUNET_YES;
3276  _ ("Shutting down plugin `%s'\n"),
3277  plugin->name);
3278 
3279  if (NULL != plugin->notify_ext_task)
3280  {
3282  plugin->notify_ext_task = NULL;
3283  }
3284 
3285  if (NULL != plugin->ext_addr)
3286  {
3288  "Notifying transport to remove address `%s'\n",
3290  plugin->ext_addr->address,
3291  plugin->ext_addr->address_length));
3292 #if BUILD_HTTPS
3293  plugin->env->notify_address (plugin->env->cls,
3294  GNUNET_NO,
3295  plugin->ext_addr);
3296 #else
3297  plugin->env->notify_address (plugin->env->cls,
3298  GNUNET_NO,
3299  plugin->ext_addr);
3300 #endif
3302  plugin->ext_addr = NULL;
3303  }
3304 
3305  /* Stop to report addresses to transport service */
3307  if (NULL != plugin->server_v4_task)
3308  {
3310  plugin->server_v4_task = NULL;
3311  }
3312 
3313  if (NULL != plugin->server_v6_task)
3314  {
3316  plugin->server_v6_task = NULL;
3317  }
3318 #if BUILD_HTTPS
3319  GNUNET_free_non_null (plugin->crypto_init);
3320  GNUNET_free_non_null (plugin->cert);
3321  GNUNET_free_non_null (plugin->key);
3322 #endif
3325  plugin);
3327  plugin->sessions = NULL;
3328  if (NULL != plugin->server_v4)
3329  {
3330  MHD_stop_daemon (plugin->server_v4);
3331  plugin->server_v4 = NULL;
3332  }
3333  if (NULL != plugin->server_v6)
3334  {
3335  MHD_stop_daemon (plugin->server_v6);
3336  plugin->server_v6 = NULL;
3337  }
3338  /* Clean up */
3340  GNUNET_free_non_null (plugin->ext_addr);
3343  regfree (&plugin->url_regex);
3344 
3346  _ ("Shutdown for plugin `%s' complete\n"),
3347  plugin->name);
3348 
3349  GNUNET_free (plugin);
3350  GNUNET_free (api);
3351  return NULL;
3352 }
3353 
3354 
3366 static const char *
3368  const void *addr,
3369  size_t addrlen)
3370 {
3372  addr,
3373  addrlen);
3374 }
3375 
3376 
3384 static enum GNUNET_NetworkType
3386  struct GNUNET_ATS_Session *session)
3387 {
3388  return session->scope;
3389 }
3390 
3391 
3399 static enum GNUNET_NetworkType
3401  const struct
3403 {
3404  struct HTTP_Server_Plugin *plugin = cls;
3405 
3406  return http_common_get_network_for_address (plugin->env,
3407  address);
3408 }
3409 
3410 
3421 static void
3423  const struct GNUNET_PeerIdentity *peer,
3424  struct GNUNET_ATS_Session *session,
3425  struct GNUNET_TIME_Relative delay)
3426 {
3429  "New inbound delay %s\n",
3431  GNUNET_NO));
3432  if (NULL != session->recv_wakeup_task)
3433  {
3435  session->recv_wakeup_task
3437  &server_wake_up,
3438  session);
3439  }
3440 }
3441 
3442 
3452 static int
3454  const struct GNUNET_PeerIdentity *peer,
3455  void *value)
3456 {
3457  struct HTTP_Server_Plugin *plugin = cls;
3458  struct GNUNET_ATS_Session *session = value;
3459 
3460  notify_session_monitor (plugin,
3461  session,
3463  return GNUNET_OK;
3464 }
3465 
3466 
3479 static void
3482  void *sic_cls)
3483 {
3484  struct HTTP_Server_Plugin *plugin = cls;
3485 
3486  plugin->sic = sic;
3487  plugin->sic_cls = sic_cls;
3488  if (NULL != sic)
3489  {
3492  plugin);
3493  /* signal end of first iteration */
3494  sic (sic_cls, NULL, NULL);
3495  }
3496 }
3497 
3498 
3505 void *
3507 {
3510  struct HTTP_Server_Plugin *plugin;
3511 
3512  if (NULL == env->receive)
3513  {
3514  /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
3515  initialze the plugin or the API */
3517  api->cls = NULL;
3521  return api;
3522  }
3523  plugin = GNUNET_new (struct HTTP_Server_Plugin);
3524  plugin->env = env;
3526  GNUNET_YES);
3527 
3529  api->cls = plugin;
3530  api->send = &http_server_plugin_send;
3536 
3545 #if BUILD_HTTPS
3546  plugin->name = "transport-https_server";
3547  plugin->protocol = "https";
3548 #else
3549  plugin->name = "transport-http_server";
3550  plugin->protocol = "http";
3551 #endif
3552 
3553  if (GNUNET_YES ==
3555  plugin->name,
3556  "TCP_STEALTH"))
3557  {
3558 #ifdef TCP_STEALTH
3559  plugin->options |= HTTP_OPTIONS_TCP_STEALTH;
3560 #else
3562  _ ("TCP_STEALTH not supported on this platform.\n"));
3564  return NULL;
3565 #endif
3566  }
3567 
3568  /* Compile URL regex */
3569  if (regcomp (&plugin->url_regex,
3570  URL_REGEX,
3571  REG_EXTENDED))
3572  {
3574  _ ("Unable to compile URL regex\n"));
3576  return NULL;
3577  }
3578 
3579  /* Configure plugin */
3580  if (GNUNET_SYSERR == server_configure_plugin (plugin))
3581  {
3583  return NULL;
3584  }
3585 
3586  /* Check IPv6 support */
3587  if (GNUNET_YES == plugin->use_ipv6)
3588  plugin->use_ipv6 = server_check_ipv6_support (plugin);
3589 
3590  /* Report addresses to transport service */
3591  if (GNUNET_NO == plugin->external_only)
3593 
3594  if (GNUNET_SYSERR == server_start (plugin))
3595  {
3597  return NULL;
3598  }
3599  return api;
3600 }
3601 
3602 
3603 /* end of plugin_transport_http_server.c */
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
static int server_receive_mst_cb(void *cls, const struct GNUNET_MessageHeader *message)
Callback called by MessageStreamTokenizer when a message has arrived.
static struct MHD_Daemon * daemon_handle
Handle to the HTTP server as provided by libmicrohttpd.
Definition: gnunet-bcd.c:46
struct GNUNET_SCHEDULER_Task * server_v6_task
MHD IPv6 task.
size_t address_length
Number of bytes in address.
void * sic_cls
Closure for sic.
Wrapper to manage addresses.
Session is being torn down and about to disappear.
static void server_remove_address(void *cls, int add_remove, const struct sockaddr *addr, socklen_t addrlen)
Remove an address from the server&#39;s set of addresses and notify transport.
Open the file for reading.
struct GNUNET_TRANSPORT_PluginEnvironment * env
Our environment.
static void server_add_address(void *cls, int add_remove, const struct sockaddr *addr, socklen_t addrlen)
Add an address to the server&#39;s set of addresses and notify transport.
struct ServerRequest * server_recv
Client send handle.
struct sockaddr_in6 * server_addr_v6
IPv6 server socket to bind to.
int verify_external_hostname
Verify external address.
Handle for active NAT registrations.
Definition: nat_api.c:71
uint32_t num_bytes_pending
Number of bytes pending transmission for this session.
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
GNUNET_TRANSPORT_CreateSession get_session
Function that will be called tell the plugin to create a session object.
uint32_t options
Address options see enum HttpAddressOptions
GNUNET_TRANSPORT_AddressToString address_to_string
Function that will be called to convert a binary address to a string (numeric conversion only)...
GNUNET_NAT_AddressClass
Some addresses contain sensitive information or are not suitable for global distribution.
struct GNUNET_HELLO_Address * GNUNET_HELLO_address_allocate(const struct GNUNET_PeerIdentity *peer, const char *transport_name, const void *address, size_t address_length, enum GNUNET_HELLO_AddressInfo local_info)
Allocate an address struct.
Definition: address.c:73
int GNUNET_DISK_file_close(struct GNUNET_DISK_FileHandle *h)
Close an open file.
Definition: disk.c:1345
#define GNUNET_TIME_UNIT_ZERO_ABS
Absolute time zero.
int GNUNET_CONFIGURATION_get_value_number(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, unsigned long long *number)
Get a configuration value that should be a number.
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
struct GNUNET_SCHEDULER_Task * recv_wakeup_task
Task to wake up client receive handle when receiving is allowed again.
uint64_t rel_value_us
The actual value.
const void * address
Binary representation of the address (plugin-specific).
#define GNUNET_CONTAINER_DLL_insert(head, tail, element)
Insert an element at the head of a DLL.
GNUNET_TRANSPORT_SessionStart session_start
Function called by the plugin when a new (incoming) session was created not explicitly created using ...
char * buf
buffer containing data to send
unsigned int msgs_in_queue
Number of messages waiting for transmission to this peer.
static struct MHD_Daemon * run_mhd_start_daemon(struct HTTP_Server_Plugin *plugin, const struct sockaddr_in *addr, int v6)
Invoke MHD_start_daemon with the various options we need to setup the HTTP server with the given list...
void GNUNET_OS_process_destroy(struct GNUNET_OS_Process *proc)
Cleans up process structure contents (OS-dependent) and deallocates it.
Definition: os_priority.c:287
static const char * http_server_plugin_address_to_string(void *cls, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
struct GNUNET_SCHEDULER_Task * timeout_task
Session timeout task.
struct HTTP_Message * msg_tail
previous pointer for double linked list
ssize_t GNUNET_DISK_file_read(const struct GNUNET_DISK_FileHandle *h, void *result, size_t len)
Read the contents of a binary file into a buffer.
Definition: disk.c:732
static int send_session_info_iter(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Return information about the given session to the monitor callback.
struct Plugin * plugin
Pointer to the global plugin struct.
static enum GNUNET_NetworkType http_server_plugin_get_network(void *cls, struct GNUNET_ATS_Session *session)
Function obtain the network type for a session.
int http_common_plugin_string_to_address(void *cls, const char *addr, uint16_t addrlen, void **buf, size_t *added)
Function called to convert a string address to a binary address.
static void server_wake_up(void *cls)
Wake up an MHD connection which was suspended.
GNUNET_TRANSPORT_TransmitFunction send
Function that the transport service will use to transmit data to another peer.
GNUNET_TRANSPORT_DisconnectPeerFunction disconnect_peer
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
static unsigned long long max_connections
If there are at least this many connections, old ones will be removed.
GNUNET_TRANSPORT_AddressToType get_address_type
Function that will be called to figure if an address is an loopback, LAN, WAN etc.
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;
struct GNUNET_TIME_Absolute GNUNET_TIME_relative_to_absolute(struct GNUNET_TIME_Relative rel)
Convert relative time to an absolute time in the future.
Definition: time.c:246
static void server_v6_run(void *cls)
Call MHD IPv6 to process pending requests and then go back and schedule the next run.
enum GNUNET_TRANSPORT_SessionState state
New state of the session.
unsigned int max_request
Maximum number of sockets the plugin can use Each http request /request connections are two connectio...
size_t pos
amount of data already sent
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
char * protocol
Plugin protocol http, https.
struct GNUNET_OS_Process * GNUNET_OS_start_process(int pipe_control, enum GNUNET_OS_InheritStdioFlags std_inheritance, struct GNUNET_DISK_PipeHandle *pipe_stdin, struct GNUNET_DISK_PipeHandle *pipe_stdout, struct GNUNET_DISK_PipeHandle *pipe_stderr, const char *filename,...)
Start a process.
Definition: os_priority.c:687
#define GNUNET_TIME_UNIT_SECONDS
One second.
uint32_t options
My options to be included in the address.
GNUNET_TRANSPORT_DisconnectSessionFunction disconnect_session
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
Message to send using http.
Each plugin is required to return a pointer to a struct of this type as the return value from its ent...
struct GNUNET_SERVER_MessageStreamTokenizer * msg_tk
Message stream tokenizer for incoming data.
GNUNET_TRANSPORT_SessionMonitorSetup setup_monitor
Function to monitor the sessions managed by the plugin.
struct GNUNET_CONTAINER_MultiPeerMap * sessions
Hash map of open sessions.
Initial session handshake is in progress.
static void server_delete_session(struct GNUNET_ATS_Session *s)
Deletes the session.
struct HTTP_Message * next
next pointer for double linked list
bool suspended
Currently suspended.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
GNUNET_TRANSPORT_SessionInfoCallback sic
Function to call about session status changes.
static void server_session_timeout(void *cls)
Session was idle, so disconnect it.
const struct GNUNET_PeerIdentity * my_identity
Identity of this peer.
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static void server_start_report_addresses(struct HTTP_Server_Plugin *plugin)
Ask NAT for addresses.
struct GNUNET_TIME_Absolute timeout
When does this session time out.
struct GNUNET_SCHEDULER_Task * server_v4_task
MHD IPv4 task.
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_NO
Definition: gnunet_common.h:78
const char * GNUNET_i2s_full(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
unsigned int cur_request
Current number of sockets the plugin can use Each http connection are two requests.
#define GNUNET_OK
Named constants for return values.
Definition: gnunet_common.h:75
#define HTTP_SERVER_NOT_VALIDATED_TIMEOUT
#define GNUNET_free_non_null(ptr)
Free the memory pointed to by ptr if ptr is not NULL.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct HTTP_Server_Plugin * plugin
Pointer to the global plugin struct.
struct GNUNET_HELLO_Address * address
Address.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format...
static void notify_session_monitor(struct HTTP_Server_Plugin *plugin, struct GNUNET_ATS_Session *session, enum GNUNET_TRANSPORT_SessionState state)
If a session monitor is attached, notify it about the new session state.
struct GNUNET_HELLO_Address * ext_addr
External hostname the plugin can be connected to, can be different to the host&#39;s FQDN, used e.g.
struct HTTP_Message * msg_head
next pointer for double linked list
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.
unsigned long long bytes_in_queue
Number of bytes waiting for transmission to this peer.
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).
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
static void http_server_plugin_disconnect_peer(void *cls, const struct GNUNET_PeerIdentity *target)
Function that can be used to force the plugin to disconnect from the given peer and cancel all previo...
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.
int direction
_RECV or _SEND
#define GNUNET_break(cond)
Use this for internal assertion violations that are not fatal (can be handled) but should not occur...
void * transmit_cont_cls
Closure for transmit_cont.
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
void GNUNET_NETWORK_fdset_copy_native(struct GNUNET_NETWORK_FDSet *to, const fd_set *from, int nfds)
Copy a native fd set into the GNUnet representation.
Definition: network.c:1120
struct GNUNET_TIME_Absolute receive_delay
Until when does this plugin refuse to receive to manage staying within the inbound quota...
int in_shutdown
Did we immediately end the session in disconnect_cb.
GNUNET_TRANSPORT_TransmitContinuation transmit_cont
Continuation function to call once the transmission buffer has again space available.
regex_t url_regex
Regex for parsing URLs.
#define _(String)
GNU gettext support macro.
Definition: platform.h:181
struct MHD_Daemon * mhd_daemon
The MHD daemon.
struct HttpAddressWrapper * next
Linked list next.
GNUNET_TRANSPORT_SessionEnd session_end
Function that must be called by the plugin when a non-NULL session handle stops being valid (is destr...
GNUNET_TRANSPORT_PluginReceiveCallback receive
Function that should be called by the transport plugin whenever a message is received.
struct GNUNET_SCHEDULER_Task * notify_ext_task
Task calling transport service about external address.
struct GNUNET_TIME_Absolute next_receive
Absolute time when to receive data again Used for receive throttling.
static int server_check_ipv6_support(struct HTTP_Server_Plugin *plugin)
Check if IPv6 supported on this system.
GNUNET_TRANSPORT_UpdateSessionTimeout update_session_timeout
Function that will be called whenever the transport service wants to notify the plugin that a session...
void GNUNET_NETWORK_fdset_destroy(struct GNUNET_NETWORK_FDSet *fds)
Releases the associated memory of an fd set.
Definition: network.c:1266
static int session_tag_it(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
Find a session with a matching tag.
static int http_server_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
Another peer has suggested an address for this peer and transport plugin.
#define GNUNET_log_strerror(level, cmd)
Log an error message at log-level &#39;level&#39; that indicates a failure of the command &#39;cmd&#39; with the mess...
Information about a plugin&#39;s session.
size_t http_common_address_get_size(const struct HttpAddress *addr)
Get the length of an address.
int GNUNET_asprintf(char **buf, const char *format,...)
Like asprintf, just portable.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed(struct GNUNET_TIME_Relative delay, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1253
struct GNUNET_NETWORK_FDSet * GNUNET_NETWORK_fdset_create(void)
Creates an fd set.
Definition: network.c:1250
static void http_server_plugin_update_session_timeout(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session)
Function that will be called whenever the transport service wants to notify the plugin that a session...
static int server_get_addresses(struct HTTP_Server_Plugin *plugin, const char *service_name, const struct GNUNET_CONFIGURATION_Handle *cfg, struct sockaddr ***addrs, socklen_t **addr_lens)
Get valid server addresses.
int server_v4_immediately
The IPv4 server is scheduled to run asap.
void * cls
Closure for the various callbacks.
enum State state
current state of profiling
void * cls
Closure for all of the callbacks.
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
static int http_server_plugin_disconnect_session(void *cls, struct GNUNET_ATS_Session *s)
Disconnect session s by telling MHD to close the connections (reducing timeout, etc.).
void GNUNET_log_config_missing(enum GNUNET_ErrorType kind, const char *section, const char *option)
Log error message about missing configuration option.
static char * value
Value of the record to add/remove.
GNUNET_TRANSPORT_StringToAddress string_to_address
Function that will be called to convert a string address to binary (numeric conversion only)...
void GNUNET_MST_destroy(struct GNUNET_MessageStreamTokenizer *mst)
Destroys a tokenizer.
Definition: mst.c:411
static int destroy_session_cb(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Terminate session.
Session handle for connections.
This is an inbound address and cannot be used to initiate an outbound connection to another peer...
struct GNUNET_DATACACHE_PluginEnvironment * env
Our execution environment.
struct MHD_Daemon * server_v4
MHD IPv4 daemon.
static int server_parse_url(struct HTTP_Server_Plugin *plugin, const char *url, struct GNUNET_PeerIdentity *target, uint32_t *tag, uint32_t *options)
Parse incoming URL for tag and target.
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:1280
The transport service will pass a pointer to a struct of this type as the first and only argument to ...
#define _RECEIVE
static enum GNUNET_NetworkType scope
Which network scope do we belong to?
int GNUNET_CONFIGURATION_have_value(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Test if we have a value for a particular option.
static struct GNUNET_SCHEDULER_Task * server_schedule(struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *daemon_handle, int now)
Function that queries MHD&#39;s select sets and starts the task waiting for them.
GNUNET_TRANSPORT_GetNetworkType get_network
Function to obtain the network type for a session.
Handle to a message stream tokenizer.
Definition: mst.c:43
#define GNUNET_MIN(a, b)
Definition: gnunet_common.h:80
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:687
void * addr
Address following.
static char * service_name
Option -s: service name (hash to get service descriptor)
Definition: gnunet-vpn.c:51
static ssize_t http_server_plugin_send(void *cls, struct GNUNET_ATS_Session *session, const char *msgbuf, size_t msgbuf_size, unsigned int priority, struct GNUNET_TIME_Relative to, GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
Function that can be used by the transport service to transmit a message using the plugin...
collection of IO descriptors
static char buf[2048]
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_select(enum GNUNET_SCHEDULER_Priority prio, struct GNUNET_TIME_Relative delay, const struct GNUNET_NETWORK_FDSet *rs, const struct GNUNET_NETWORK_FDSet *ws, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay or when any of the specified file descriptor set...
Definition: scheduler.c:1810
void http_common_plugin_address_pretty_printer(void *cls, const char *type, const void *addr, size_t addrlen, int numeric, struct GNUNET_TIME_Relative timeout, GNUNET_TRANSPORT_AddressStringCallback asc, void *asc_cls)
Convert the transports address to a nice, human-readable format.
struct GNUNET_MessageStreamTokenizer * GNUNET_MST_create(GNUNET_MessageTokenizerCallback cb, void *cb_cls)
Create a message stream tokenizer.
Definition: mst.c:85
void(* GNUNET_TRANSPORT_SessionInfoCallback)(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 ...
static unsigned int http_server_query_keepalive_factor(void *cls)
Function that is called to get the keepalive factor.
static int server_configure_plugin(struct HTTP_Server_Plugin *plugin)
Configure the plugin.
const char * GNUNET_a2s(const struct sockaddr *addr, socklen_t addrlen)
Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string (for printing debug messages)...
static struct ServerRequest * server_lookup_connection(struct HTTP_Server_Plugin *plugin, struct MHD_Connection *mhd_connection, const char *url, const char *method)
Lookup a mhd connection and create one if none is found.
int GNUNET_MST_from_buffer(struct GNUNET_MessageStreamTokenizer *mst, const char *buf, size_t size, int purge, int one_shot)
Add incoming data to the receive buffer and call the callback for all complete messages.
Definition: mst.c:114
static enum GNUNET_NetworkType http_server_plugin_get_network_for_address(void *cls, const struct GNUNET_HELLO_Address *address)
Function obtain the network type for an address.
struct GNUNET_TIME_Absolute session_timeout
At what time will this session timeout (unless activity happens)?
static void server_mhd_connection_timeout(struct HTTP_Server_Plugin *plugin, struct GNUNET_ATS_Session *s, unsigned int to)
Tell MHD that the connection should timeout after to seconds.
int known_to_service
GNUNET_YES if this session is known to the service.
Internal representation of the hash map.
static void server_stop_report_addresses(struct HTTP_Server_Plugin *plugin)
Stop NAT for addresses.
GNUNET_TRANSPORT_UpdateInboundDelay update_inbound_delay
Function that will be called whenever the transport service wants to notify the plugin that the inbou...
struct GNUNET_NAT_Handle * nat
NAT handle & address management.
#define GNUNET_TIME_UNIT_MILLISECONDS
One millisecond.
static int res
static char * plugin
Solver plugin name as string.
size_t overhead
HTTP/S specific overhead.
struct GNUNET_ATS_Session * res
Set to session matching the tag.
When these flags are set, the child process will inherit stdout and stderr of the parent...
Definition: gnunet_os_lib.h:97
int GNUNET_CONFIGURATION_get_value_string(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be a string.
Closure for session_tag_it().
void GNUNET_NAT_unregister(struct GNUNET_NAT_Handle *nh)
Stop port redirection and public IP address detection for the given handle.
Definition: nat_api.c:692
static void server_log(void *arg, const char *fmt, va_list ap)
Log function called by MHD.
#define VERBOSE_SERVER
static int destroy_session_shutdown_cb(void *cls, const struct GNUNET_PeerIdentity *peer, void *value)
Terminate session during shutdown.
struct MHD_Connection * mhd_conn
The MHD connection.
size_t size
buffer length
static void add_cors_headers(struct MHD_Response *response)
Add headers to a request indicating that we allow Cross-Origin Resource Sharing.
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.
struct GNUNET_HashCode key
The key used in the DHT.
#define GNUNET_SYSERR
Definition: gnunet_common.h:76
static unsigned int size
Size of the "table".
Definition: peer.c:67
#define LIBGNUNET_PLUGIN_TRANSPORT_INIT
uint32_t urlen
Length of URL located after struct.
enum GNUNET_NetworkType scope
ATS network type.
uint32_t tag
Unique HTTP/S connection tag for this connection.
#define HTTP_ERROR_RESPONSE
struct GNUNET_NAT_Handle * GNUNET_NAT_register(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *config_section, uint8_t proto, unsigned int num_addrs, const struct sockaddr **addrs, const socklen_t *addrlens, GNUNET_NAT_AddressCallback address_callback, GNUNET_NAT_ReversalCallback reversal_callback, void *callback_cls)
Attempt to enable port redirection and detect public IP address contacting UPnP or NAT-PMP routers on...
Definition: nat_api.c:378
static struct GNUNET_MQ_Envelope * ac
Handle to current GNUNET_PEERINFO_add_peer() operation.
static struct GNUNET_ATS_Session * http_server_plugin_get_session(void *cls, const struct GNUNET_HELLO_Address *address)
Creates a new outbound session the transport service will use to send data to the peer...
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
void(* GNUNET_TRANSPORT_TransmitContinuation)(void *cls, const struct GNUNET_PeerIdentity *target, int result, size_t size_payload, size_t size_on_wire)
Function called by the GNUNET_TRANSPORT_TransmitFunction upon "completion".
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
unsigned int external_only
Notify transport only about external address.
static struct GNUNET_FS_SearchContext * sc
Definition: gnunet-search.c:37
static void server_notify_external_hostname(void *cls)
Notify server about our external hostname.
static struct GNUNET_SCHEDULER_Task * timeout_task
Task to be run on timeout.
Definition: gnunet-arm.c:124
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
struct sockaddr_in * server_addr_v4
IPv4 server socket to bind to.
static int server_access_cb(void *cls, struct MHD_Connection *mhd_connection, const char *url, const char *method, const char *version, const char *upload_data, size_t *upload_data_size, void **httpSessionCache)
MHD callback for a new incoming connection.
Enable TCP Stealth-style port knocking.
#define GNUNET_MAX_MESSAGE_SIZE
Largest supported message (to be precise, one byte more than the largest possible message...
int GNUNET_DISK_file_size(const char *filename, uint64_t *size, int include_symbolic_links, int single_file_mode)
Get the size of the file (or directory) of the given file (in bytes).
Definition: disk.c:257
static int server_start(struct HTTP_Server_Plugin *plugin)
Start the HTTP server.
const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration to use.
struct HttpAddress * address
An address we are using.
Allow multiple values with the same key.
#define GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
After how long do we consider a connection to a peer dead if we don&#39;t receive messages from the peer...
const char * http_common_plugin_address_to_string(const char *plugin, const void *addr, size_t addrlen)
Function called for a quick conversion of the binary address to a numeric address.
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.
This is just an update about the session, the state did not change.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
int GNUNET_CRYPTO_eddsa_public_key_from_string(const char *enc, size_t enclen, struct GNUNET_CRYPTO_EddsaPublicKey *pub)
Convert a string representing a public key to a public key.
Definition: crypto_ecc.c:499
enum GNUNET_NetworkType http_common_get_network_for_address(struct GNUNET_TRANSPORT_PluginEnvironment *env, const struct GNUNET_HELLO_Address *address)
Function obtain the network type for an address.
GNUNET_TRANSPORT_QueryKeepaliveFactorFunction query_keepalive_factor
Function that is used to query keepalive factor.
The identity of the host (wraps the signing key of the peer).
No additional information.
uint32_t tag
Tag we are looking for.
Information we keep with MHD for an HTTP request.
static char * hostname
Our hostname; we give this to all the peers we start.
#define HTTP_SERVER_SESSION_TIMEOUT
int GNUNET_OS_process_wait(struct GNUNET_OS_Process *proc)
Wait for a process to terminate.
Definition: os_priority.c:1000
static void http_server_plugin_setup_monitor(void *cls, GNUNET_TRANSPORT_SessionInfoCallback sic, void *sic_cls)
Begin monitoring sessions of a plugin.
size_t http_common_cmp_addresses(const void *addr1, size_t addrlen1, const void *addr2, size_t addrlen2)
Compare addr1 to addr2.
struct GNUNET_ATS_Session * session
The session this server connection belongs to.
static uint16_t port
Port number.
Definition: gnunet-bcd.c:81
int connected
For PUT requests: Is this the first or last callback with size 0 For GET requests: Have we sent a mes...
configuration data
Definition: configuration.c:85
Encapsulation of all of the state of the plugin.
struct GNUNET_PeerIdentity target
To whom are we talking to.
static void server_connection_cb(void *cls, struct MHD_Connection *connection, void **socket_context, enum MHD_ConnectionNotificationCode toe)
Callback from MHD when a connection starts/stops.
An address for communicating with a peer.
static void server_disconnect_cb(void *cls, struct MHD_Connection *connection, void **httpSessionCache)
Callback from MHD when a connection disconnects.
struct HttpAddress * http_common_address_from_socket(const char *protocol, const struct sockaddr *addr, socklen_t addrlen)
Create a HTTP address from a socketaddr.
struct GNUNET_STATISTICS_Handle * stats
Handle for reporting statistics.
#define GNUNET_log(kind,...)
The session was created (first call for each session object).
Entry in list of pending tasks.
Definition: scheduler.c:134
static void http_server_plugin_update_inbound_delay(void *cls, const struct GNUNET_PeerIdentity *peer, struct GNUNET_ATS_Session *session, struct GNUNET_TIME_Relative delay)
Function that will be called whenever the transport service wants to notify the plugin that the inbou...
struct HTTP_Message * prev
previous pointer for double linked list
uint32_t options
Options requested by peer.
int GNUNET_CONFIGURATION_get_value_filename(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option, char **value)
Get a configuration value that should be the name of a file or directory.
int server_send(struct GNUNET_ATS_Session *s, struct HTTP_Message *msg)
handle to a socket
Definition: network.c:52
struct HttpAddressWrapper * addr_tail
IPv4 addresses DLL tail.
static struct MHD_Response * response
Our canonical response.
GNUNET_TRANSPORT_AddressNotification notify_address
Function that must be called by each plugin to notify the transport service about the addresses under...
Verify X509 server certificate, it should be valid.
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_remaining(struct GNUNET_TIME_Absolute future)
Given a timestamp in the future, how much time remains until then?
Definition: time.c:331
struct ServerRequest * server_send
Client send handle.
static ssize_t server_send_callback(void *cls, uint64_t pos, char *buf, size_t max)
Callback called by MHD when it needs data to send.
int server_v6_immediately
The IPv6 server is scheduled to run asap.
#define URL_REGEX
GNUNET_TRANSPORT_AddressPrettyPrinter address_pretty_printer
Function to pretty-print addresses.
Header for all communications.
Time for absolute times used by GNUnet, in microseconds.
#define GNUNET_YES
Definition: gnunet_common.h:77
static void server_reschedule_session_timeout(struct GNUNET_ATS_Session *s)
Increment session timeout due to activity session s.
struct HttpAddressWrapper * prev
Linked list previous.
static void server_v4_run(void *cls)
Call MHD IPv4 to process pending requests and then go back and schedule the next run.
Run with the default priority (normal P2P operations).
struct HttpAddressWrapper * addr_head
IPv4 addresses DLL head.
GNUNET_TRANSPORT_CheckAddress check_address
Function that will be called to check if a binary address for this plugin is well-formed and correspo...
GNUNET_TRANSPORT_SessionState
Possible states of a session in a plugin.
#define LIBGNUNET_PLUGIN_TRANSPORT_DONE
#define PLUGIN_NAME
static int server_accept_cb(void *cls, const struct sockaddr *addr, socklen_t addr_len)
Check if incoming connection is accepted.
#define LOG(kind,...)
int GNUNET_CONFIGURATION_get_value_yesno(const struct GNUNET_CONFIGURATION_Handle *cfg, const char *section, const char *option)
Get a configuration value that should be in a set of "YES" or "NO".
static void server_nat_port_map_callback(void *cls, void **app_ctx, int add_remove, enum GNUNET_NAT_AddressClass ac, const struct sockaddr *addr, socklen_t addrlen)
Our external IP address/port mapping has changed.
struct GNUNET_DISK_FileHandle * GNUNET_DISK_file_open(const char *fn, enum GNUNET_DISK_OpenFlags flags, enum GNUNET_DISK_AccessPermissions perm)
Open a file.
Definition: disk.c:1268
static char * address
GNS address for this phone.
#define OPTION_LONG_POLL
Handle used to access files (and pipes).
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
int GNUNET_NETWORK_socket_close(struct GNUNET_NETWORK_Handle *desc)
Close a socket.
Definition: network.c:560
#define GNUNET_HELLO_address_free(addr)
Free an address.
HTTP addresses including a full URI.
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.
static void server_reschedule(struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *server, int now)
Reschedule the execution of both IPv4 and IPv6 server.
#define TIMEOUT_LOG
char * external_hostname
External address.
#define GNUNET_malloc(size)
Wrapper around malloc.
struct MHD_Daemon * server_v6
MHD IPv4 daemon.
size_t addrlen
Length of the address.
int peer_id_length
Length of peer id.
#define GNUNET_free(ptr)
Wrapper around free.
Time for relative time used by GNUnet, in microseconds.
struct GNUNET_CRYPTO_EddsaPublicKey public_key
GNUNET_TRANSPORT_GetNetworkTypeForAddress get_network_for_address
Function to obtain the network type for an address.
struct GNUNET_NETWORK_Handle * GNUNET_NETWORK_socket_create(int domain, int type, int protocol)
Create a new socket.
Definition: network.c:912
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:966