2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
27 #include "plugin_transport_http.h"
29 #define HTTP_ERROR_RESPONSE "<!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>"
33 static struct Plugin * p;
36 * Function that queries MHD's select sets and
37 * starts the task waiting for them.
38 * @param plugin plugin
39 * @param daemon_handle the MHD daemon handle
40 * @param now schedule now or with MHD delay
41 * @return gnunet task identifier
43 static GNUNET_SCHEDULER_TaskIdentifier
44 server_schedule (struct Plugin *plugin,
45 struct MHD_Daemon *daemon_handle,
49 server_log (void *arg, const char *fmt, va_list ap)
53 vsnprintf (text, sizeof (text), fmt, ap);
55 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
59 * Check if incoming connection is accepted.
60 * NOTE: Here every connection is accepted
61 * @param cls plugin as closure
62 * @param addr address of incoming connection
63 * @param addr_len address length of incoming connection
64 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
68 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
70 struct Plugin *plugin = cls;
72 if (plugin->cur_connections <= plugin->max_connections)
76 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
77 "Server: Cannot accept new connections\n");
85 server_load_file (const char *file)
87 struct GNUNET_DISK_FileHandle *gn_file;
91 if (GNUNET_OK != GNUNET_DISK_file_size (file,
92 &fsize, GNUNET_NO, GNUNET_YES))
94 text = GNUNET_malloc (fsize + 1);
96 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
97 GNUNET_DISK_PERM_USER_READ);
103 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
106 GNUNET_DISK_file_close (gn_file);
110 GNUNET_DISK_file_close (gn_file);
119 server_load_certificate (struct Plugin *plugin)
126 /* Get crypto init string from config
127 * If not present just use default values */
129 GNUNET_assert (GNUNET_OK ==
130 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
133 &plugin->crypto_init));
136 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
137 "KEY_FILE", &key_file))
139 key_file = GNUNET_strdup ("https_key.key");
143 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
144 "CERT_FILE", &cert_file))
146 GNUNET_asprintf (&cert_file, "%s", "https_cert.crt");
149 /* read key & certificates from file */
150 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
151 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
152 key_file, cert_file);
154 plugin->key = server_load_file (key_file);
155 plugin->cert = server_load_file (cert_file);
157 if ((plugin->key == NULL) || (plugin->cert == NULL))
159 struct GNUNET_OS_Process *cert_creation;
161 GNUNET_free_non_null (plugin->key);
163 GNUNET_free_non_null (plugin->cert);
166 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
167 "No usable TLS certificate found, creating certificate\n");
170 GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
171 "gnunet-transport-certificate-creation",
172 "gnunet-transport-certificate-creation",
173 key_file, cert_file, NULL);
174 if (cert_creation == NULL)
176 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
178 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
179 GNUNET_free (key_file);
180 GNUNET_free (cert_file);
182 GNUNET_free_non_null (plugin->key);
184 GNUNET_free_non_null (plugin->cert);
186 GNUNET_free_non_null (plugin->crypto_init);
187 plugin->crypto_init = NULL;
189 return GNUNET_SYSERR;
191 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
192 GNUNET_OS_process_destroy (cert_creation);
194 plugin->key = server_load_file (key_file);
195 plugin->cert = server_load_file (cert_file);
198 if ((plugin->key == NULL) || (plugin->cert == NULL))
200 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
202 ("No usable TLS certificate found and creating one failed!\n"),
204 GNUNET_free (key_file);
205 GNUNET_free (cert_file);
207 GNUNET_free_non_null (plugin->key);
209 GNUNET_free_non_null (plugin->cert);
211 GNUNET_free_non_null (plugin->crypto_init);
212 plugin->crypto_init = NULL;
214 return GNUNET_SYSERR;
216 GNUNET_free (key_file);
217 GNUNET_free (cert_file);
218 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
225 * Reschedule the execution of both IPv4 and IPv6 server
226 * @param plugin the plugin
227 * @param server which server to schedule v4 or v6?
228 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
232 server_reschedule (struct Plugin *plugin, struct MHD_Daemon *server, int now)
234 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
236 if (GNUNET_YES == plugin->server_v4_immediately)
237 return; /* No rescheduling, server will run asap */
239 if (GNUNET_YES == now)
240 plugin->server_v4_immediately = GNUNET_YES;
242 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
244 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
245 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
247 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
250 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
252 if (GNUNET_YES == plugin->server_v6_immediately)
253 return; /* No rescheduling, server will run asap */
255 if (GNUNET_YES == now)
256 plugin->server_v6_immediately = GNUNET_YES;
258 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
260 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
261 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
263 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
268 * Callback called by MessageStreamTokenizer when a message has arrived
269 * @param cls current session as closure
270 * @param client clien
271 * @param message the message to be forwarded to transport service
274 server_receive_mst_cb (void *cls, void *client,
275 const struct GNUNET_MessageHeader *message)
277 struct Session *s = cls;
279 GNUNET_assert (NULL != p);
280 if (GNUNET_NO == exist_session(p, s))
283 struct Plugin *plugin = s->plugin;
284 struct GNUNET_TIME_Relative delay;
286 delay = http_plugin_receive (s, &s->target, message, s, s->addr, s->addrlen);
289 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
291 if (delay.rel_value > 0)
293 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
294 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
295 GNUNET_i2s (&s->target),
296 http_plugin_address_to_string (NULL, s->addr, s->addrlen),
304 * Callback called by MHD when it needs data to send
305 * @param cls current session
306 * @param pos position in buffer
307 * @param buf the buffer to write data to
308 * @param max max number of bytes available in buffer
309 * @return bytes written to buffer
312 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
314 struct Session *s = cls;
315 ssize_t bytes_read = 0;
316 struct HTTP_Message *msg;
318 GNUNET_assert (NULL != p);
319 if (GNUNET_NO == exist_session(p, s))
325 bytes_read = GNUNET_MIN (msg->size - msg->pos,
327 memcpy (buf, &msg->buf[msg->pos], bytes_read);
328 msg->pos += bytes_read;
330 /* removing message */
331 if (msg->pos == msg->size)
333 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
334 if (NULL != msg->transmit_cont)
335 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
339 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
340 "Server: %p: sent %u bytes\n", s, bytes_read);
345 static struct Session *
346 server_lookup_session (struct Plugin *plugin,
347 struct ServerConnection * sc)
351 for (s = plugin->head; NULL != s; s = s->next)
352 if ((s->server_recv == sc) || (s->server_send == sc))
354 for (s = plugin->server_semi_head; NULL != s; s = s->next)
355 if ((s->server_recv == sc) || (s->server_send == sc))
361 static struct ServerConnection *
362 server_lookup_serverconnection (struct Plugin *plugin,
363 struct MHD_Connection *mhd_connection, const char *url,
366 struct Session *s = NULL;
368 struct ServerConnection *sc = NULL;
369 const union MHD_ConnectionInfo *conn_info;
370 struct GNUNET_ATS_Information ats;
371 struct IPv4HttpAddress a4;
372 struct IPv6HttpAddress a6;
373 struct sockaddr_in *s4;
374 struct sockaddr_in6 *s6;
377 struct GNUNET_PeerIdentity target;
379 int direction = GNUNET_SYSERR;
381 /* url parsing variables */
389 conn_info = MHD_get_connection_info (mhd_connection,
390 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
391 if ((conn_info->client_addr->sa_family != AF_INET) &&
392 (conn_info->client_addr->sa_family != AF_INET6))
395 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
396 "New %s connection from %s\n",
399 * URL is valid if it is in the form [peerid[103];tag]*/
400 url_len = strlen (url);
401 url_end = (char *) &url[url_len];
405 goto error; /* too short */
407 hash_start = strrchr (url, '/');
408 if (NULL == hash_start)
410 goto error; /* '/' delimiter not found */
412 if (hash_start >= url_end)
414 goto error; /* mal formed */
418 hash_end = strrchr (hash_start, ';');
419 if (NULL == hash_end)
420 goto error; /* ';' delimiter not found */
421 if (hash_end >= url_end)
423 goto error; /* mal formed */
426 if (hash_start >= hash_end)
428 goto error; /* mal formed */
431 if ((strlen(hash_start) - strlen(hash_end)) != 103)
433 goto error; /* invalid hash length */
437 memcpy (hash, hash_start, 103);
439 if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string ((const char *) hash, &(target.hashPubKey)))
441 goto error; /* mal formed */
444 if (hash_end >= url_end)
446 goto error; /* mal formed */
449 tag_start = &hash_end[1];
452 tag = strtoul (tag_start, &tag_end, 10);
455 goto error; /* mal formed */
459 goto error; /* mal formed */
461 if (tag_end != url_end)
463 goto error; /* mal formed */
466 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
467 direction = _RECEIVE;
468 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
475 plugin->cur_connections++;
476 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
477 "Server: New %s connection from %s with tag %u\n",
479 GNUNET_i2s (&target), tag);
481 /* find duplicate session */
486 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
488 /* FIXME add source address comparison */
495 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
496 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
497 GNUNET_i2s (&target));
501 /* find semi-session */
502 t = plugin->server_semi_head;
506 /* FIXME add source address comparison */
507 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
517 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
518 "Server: Found existing semi-session for `%s'\n",
519 GNUNET_i2s (&target));
521 if ((direction == _SEND) && (t->server_send != NULL))
523 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
524 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
525 GNUNET_i2s (&target));
531 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
532 plugin->server_semi_tail, s);
533 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
534 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
535 "Server: Found matching semi-session, merging session for peer `%s'\n",
536 GNUNET_i2s (&target));
538 plugin->inbound_sessions ++;
539 GNUNET_STATISTICS_set (plugin->env->stats,
540 "# HTTP inbound sessions",
541 plugin->inbound_sessions,
543 GNUNET_assert (NULL != s);
546 if ((direction == _RECEIVE) && (t->server_recv != NULL))
548 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
549 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
550 GNUNET_i2s (&target));
556 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
557 plugin->server_semi_tail, s);
558 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
559 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
560 "Server: Found matching semi-session, merging session for peer `%s'\n",
561 GNUNET_i2s (&target));
562 plugin->inbound_sessions ++;
563 GNUNET_STATISTICS_set (plugin->env->stats,
564 "# HTTP inbound sessions",
565 plugin->inbound_sessions,
567 GNUNET_assert (NULL != s);
572 /* create new session */
573 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
574 "Server: Creating new session for peer `%s' \n",
575 GNUNET_i2s (&target));
576 switch (conn_info->client_addr->sa_family)
579 s4 = ((struct sockaddr_in *) conn_info->client_addr);
580 a4.u4_port = s4->sin_port;
581 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
583 a_len = sizeof (struct IPv4HttpAddress);
584 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
587 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
588 a6.u6_port = s6->sin6_port;
589 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
591 a_len = sizeof (struct IPv6HttpAddress);
592 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
598 s = create_session (plugin, &target, a, a_len);
599 GNUNET_assert (NULL != s);
600 s->ats_address_network_type = ats.value;
601 s->inbound = GNUNET_YES;
602 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
604 s->server_recv = NULL;
605 s->server_send = NULL;
607 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
608 plugin->server_semi_tail, s);
612 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
613 "Server: Invalid connection request\n");
617 sc = GNUNET_malloc (sizeof (struct ServerConnection));
618 sc->mhd_conn = mhd_connection;
619 sc->direction = direction;
621 if (direction == _SEND)
623 if (direction == _RECEIVE)
626 #if MHD_VERSION >= 0x00090E00
627 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
629 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
630 "Server: Setting timeout for %p to %u sec.\n", sc, to);
631 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
633 struct MHD_Daemon *d = NULL;
635 if (s->addrlen == sizeof (struct IPv6HttpAddress))
636 d = plugin->server_v6;
637 if (s->addrlen == sizeof (struct IPv4HttpAddress))
638 d = plugin->server_v4;
640 server_reschedule (plugin, d, GNUNET_NO);
646 * Process GET or PUT request received via MHD. For
647 * GET, queue response that will send back our pending
648 * messages. For PUT, process incoming data and send
649 * to GNUnet core. In either case, check if a session
650 * already exists and create a new one if not.
653 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
654 const char *url, const char *method, const char *version,
655 const char *upload_data, size_t * upload_data_size,
656 void **httpSessionCache)
658 struct Plugin *plugin = cls;
659 struct ServerConnection *sc = *httpSessionCache;
661 struct MHD_Response *response;
664 GNUNET_assert (cls != NULL);
668 sc = server_lookup_serverconnection (plugin, mhd_connection, url, method);
670 (*httpSessionCache) = sc;
674 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
675 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
676 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
677 MHD_destroy_response (response);
683 /* 'old' connection */
684 if (NULL == server_lookup_session (plugin, sc))
686 /* Session was already disconnected */
691 /* existing connection */
692 sc = (*httpSessionCache);
695 GNUNET_assert (NULL != s);
697 /* connection is to be disconnected */
698 if (sc->disconnect == GNUNET_YES)
700 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
702 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
704 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
705 MHD_destroy_response (response);
709 GNUNET_assert (s != NULL);
710 /* Check if both directions are connected */
711 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
713 /* Delayed read from since not both semi-connections are connected */
717 if (sc->direction == _SEND)
720 MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
722 &server_send_callback, s,
724 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
725 MHD_destroy_response (response);
728 if (sc->direction == _RECEIVE)
730 if (*upload_data_size == 0)
732 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
733 "Server: Peer `%s' PUT on address `%s' connected\n",
734 GNUNET_i2s (&s->target),
735 http_plugin_address_to_string (NULL, s->addr,
741 if ((*upload_data_size > 0))
743 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
744 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
745 GNUNET_i2s (&s->target),
746 http_plugin_address_to_string (NULL, s->addr,
749 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
751 if ((s->next_receive.abs_value <= now.abs_value))
753 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
754 "Server: %p: PUT with %u bytes forwarded to MST\n", s,
756 if (s->msg_tk == NULL)
758 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
760 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
761 *upload_data_size, GNUNET_NO, GNUNET_NO);
763 #if MHD_VERSION >= 0x00090E00
764 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
765 struct ServerConnection *t = NULL;
767 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
768 "Server: Received %u bytes\n", *upload_data_size);
769 /* Setting timeouts for other connections */
770 if (s->server_recv != NULL)
773 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
774 "Server: Setting timeout for %p to %u sec.\n", t,
776 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
779 if (s->server_send != NULL)
782 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
783 "Server: Setting timeout for %p to %u sec.\n", t,
785 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
788 struct MHD_Daemon *d = NULL;
790 if (s->addrlen == sizeof (struct IPv6HttpAddress))
791 d = plugin->server_v6;
792 if (s->addrlen == sizeof (struct IPv4HttpAddress))
793 d = plugin->server_v4;
794 server_reschedule (plugin, d, GNUNET_NO);
796 (*upload_data_size) = 0;
800 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
801 "Server: %p no inbound bandwidth available! Next read was delayed by %llu ms\n",
802 s, now.abs_value - s->next_receive.abs_value);
813 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
814 void **httpSessionCache)
816 struct ServerConnection *sc = *httpSessionCache;
817 struct ServerConnection *tc = NULL;
818 struct Session *s = NULL;
819 struct Session *t = NULL;
820 struct Plugin *plugin = NULL;
825 if (NULL == (s = server_lookup_session (p, sc)))
828 GNUNET_assert (NULL != p);
829 if (GNUNET_NO == exist_session(p, s))
833 if (sc->direction == _SEND)
836 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
837 "Server: %p peer `%s' GET on address `%s' disconnected\n",
838 s->server_send, GNUNET_i2s (&s->target),
839 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
840 s->server_send = NULL;
841 if (NULL != (tc = s->server_recv))
843 tc->disconnect = GNUNET_YES;
844 GNUNET_assert (NULL != tc->mhd_conn);
845 #if MHD_VERSION >= 0x00090E00
846 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
851 if (sc->direction == _RECEIVE)
853 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
854 "Server: %p peer `%s' PUT on address `%s' disconnected\n",
855 s->server_recv, GNUNET_i2s (&s->target),
856 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
857 s->server_recv = NULL;
858 if (NULL != (tc = s->server_send))
860 tc->disconnect = GNUNET_YES;
861 GNUNET_assert (NULL != tc->mhd_conn);
862 #if MHD_VERSION >= 0x00090E00
863 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
867 if (s->msg_tk != NULL)
869 GNUNET_SERVER_mst_destroy (s->msg_tk);
876 t = plugin->server_semi_head;
881 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
882 plugin->server_semi_tail, s);
883 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
888 plugin->cur_connections--;
890 struct MHD_Daemon *d = NULL;
892 if (s->addrlen == sizeof (struct IPv6HttpAddress))
893 d = plugin->server_v6;
894 if (s->addrlen == sizeof (struct IPv4HttpAddress))
895 d = plugin->server_v4;
896 server_reschedule (plugin, d, GNUNET_NO);
898 if ((s->server_send == NULL) && (s->server_recv == NULL))
900 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
901 "Server: peer `%s' on address `%s' disconnected\n",
902 GNUNET_i2s (&s->target),
903 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
904 if (s->msg_tk != NULL)
906 GNUNET_SERVER_mst_destroy (s->msg_tk);
910 GNUNET_assert (plugin->inbound_sessions > 0);
911 plugin->inbound_sessions --;
912 GNUNET_STATISTICS_set (plugin->env->stats,
913 "# HTTP inbound sessions",
914 plugin->inbound_sessions, GNUNET_NO);
916 notify_session_end (s->plugin, &s->target, s);
921 server_disconnect (struct Session *s)
923 struct ServerConnection * send;
924 struct ServerConnection * recv;
926 send = (struct ServerConnection *) s->server_send;
927 if (s->server_send != NULL)
929 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
930 "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
931 s, s->server_send, GNUNET_i2s (&s->target));
933 send->disconnect = GNUNET_YES;
934 #if MHD_VERSION >= 0x00090E00
935 MHD_set_connection_option (send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
940 recv = (struct ServerConnection *) s->server_recv;
943 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
944 "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
945 s, s->server_recv, GNUNET_i2s (&s->target));
947 recv->disconnect = GNUNET_YES;
948 #if MHD_VERSION >= 0x00090E00
949 MHD_set_connection_option (recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
954 /* Schedule connection immediately */
955 if (s->addrlen == sizeof (struct IPv4HttpAddress))
957 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
959 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
961 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
967 server_send (struct Session *s, struct HTTP_Message *msg)
969 GNUNET_CONTAINER_DLL_insert_tail (s->msg_head, s->msg_tail, msg);
971 if (s->addrlen == sizeof (struct IPv4HttpAddress))
973 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
975 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
977 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
980 return GNUNET_SYSERR;
987 * Call MHD IPv4 to process pending requests and then go back
988 * and schedule the next run.
989 * @param cls plugin as closure
990 * @param tc task context
993 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
995 struct Plugin *plugin = cls;
997 GNUNET_assert (cls != NULL);
999 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1000 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1003 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1004 "Running IPv4 server\n");
1006 plugin->server_v4_immediately = GNUNET_NO;
1007 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
1008 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1013 * Call MHD IPv6 to process pending requests and then go back
1014 * and schedule the next run.
1015 * @param cls plugin as closure
1016 * @param tc task context
1019 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1021 struct Plugin *plugin = cls;
1023 GNUNET_assert (cls != NULL);
1024 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1025 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1028 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1029 "Running IPv6 server\n");
1031 plugin->server_v6_immediately = GNUNET_NO;
1032 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
1033 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1037 * Function that queries MHD's select sets and
1038 * starts the task waiting for them.
1039 * @param plugin plugin
1040 * @param daemon_handle the MHD daemon handle
1041 * @return gnunet task identifier
1043 static GNUNET_SCHEDULER_TaskIdentifier
1044 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
1047 GNUNET_SCHEDULER_TaskIdentifier ret;
1051 struct GNUNET_NETWORK_FDSet *wrs;
1052 struct GNUNET_NETWORK_FDSet *wws;
1053 struct GNUNET_NETWORK_FDSet *wes;
1055 unsigned MHD_LONG_LONG timeout;
1056 static unsigned long long last_timeout = 0;
1059 struct GNUNET_TIME_Relative tv;
1061 ret = GNUNET_SCHEDULER_NO_TASK;
1065 wrs = GNUNET_NETWORK_fdset_create ();
1066 wes = GNUNET_NETWORK_fdset_create ();
1067 wws = GNUNET_NETWORK_fdset_create ();
1069 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1070 haveto = MHD_get_timeout (daemon_handle, &timeout);
1071 if (haveto == MHD_YES)
1073 if (timeout != last_timeout)
1076 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1077 "SELECT Timeout changed from %llu to %llu\n",
1078 last_timeout, timeout);
1080 last_timeout = timeout;
1082 tv.rel_value = (uint64_t) timeout;
1085 tv = GNUNET_TIME_UNIT_SECONDS;
1086 /* Force immediate run, since we have outbound data to send */
1087 if (now == GNUNET_YES)
1088 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1089 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1090 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1091 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1093 if (daemon_handle == plugin->server_v4)
1095 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1097 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1098 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1101 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1102 "Scheduling IPv4 server task in %llu ms\n", tv);
1105 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1107 &server_v4_run, plugin);
1109 if (daemon_handle == plugin->server_v6)
1111 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1113 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1114 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1117 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1118 "Scheduling IPv6 server task in %llu ms\n", tv);
1121 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1123 &server_v6_run, plugin);
1125 GNUNET_NETWORK_fdset_destroy (wrs);
1126 GNUNET_NETWORK_fdset_destroy (wws);
1127 GNUNET_NETWORK_fdset_destroy (wes);
1132 server_start (struct Plugin *plugin)
1134 int res = GNUNET_OK;
1135 unsigned int timeout;
1137 GNUNET_assert (NULL != plugin);
1140 res = server_load_certificate (plugin);
1141 if (res == GNUNET_SYSERR)
1143 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1144 "Could not load or create server certificate! Loading plugin failed!\n");
1150 #if MHD_VERSION >= 0x00090E00
1151 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1152 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1153 "MHD can set timeout per connection! Default time out %u sec.\n",
1156 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1157 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1158 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1161 plugin->server_v4 = NULL;
1162 if (plugin->ipv4 == GNUNET_YES)
1164 plugin->server_v4 = MHD_start_daemon (
1171 MHD_NO_FLAG, plugin->port,
1172 &server_accept_cb, plugin,
1173 &server_access_cb, plugin,
1174 MHD_OPTION_SOCK_ADDR,
1175 (struct sockaddr_in *)
1176 plugin->server_addr_v4,
1177 MHD_OPTION_CONNECTION_LIMIT,
1179 plugin->max_connections,
1181 MHD_OPTION_HTTPS_PRIORITIES,
1182 plugin->crypto_init,
1183 MHD_OPTION_HTTPS_MEM_KEY,
1185 MHD_OPTION_HTTPS_MEM_CERT,
1188 MHD_OPTION_CONNECTION_TIMEOUT,
1190 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1192 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1193 MHD_OPTION_NOTIFY_COMPLETED,
1194 &server_disconnect_cb, plugin,
1195 MHD_OPTION_EXTERNAL_LOGGER,
1196 server_log, NULL, MHD_OPTION_END);
1198 plugin->server_v6 = NULL;
1199 if (plugin->ipv6 == GNUNET_YES)
1201 plugin->server_v6 = MHD_start_daemon (
1208 MHD_USE_IPv6, plugin->port,
1209 &server_accept_cb, plugin,
1210 &server_access_cb, plugin,
1211 MHD_OPTION_SOCK_ADDR,
1212 (struct sockaddr_in6 *)
1213 plugin->server_addr_v6,
1214 MHD_OPTION_CONNECTION_LIMIT,
1216 plugin->max_connections,
1218 MHD_OPTION_HTTPS_PRIORITIES,
1219 plugin->crypto_init,
1220 MHD_OPTION_HTTPS_MEM_KEY,
1222 MHD_OPTION_HTTPS_MEM_CERT,
1225 MHD_OPTION_CONNECTION_TIMEOUT,
1227 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1229 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1230 MHD_OPTION_NOTIFY_COMPLETED,
1231 &server_disconnect_cb, plugin,
1232 MHD_OPTION_EXTERNAL_LOGGER,
1233 server_log, NULL, MHD_OPTION_END);
1237 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1239 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1240 "Failed to start %s IPv4 server component on port %u\n",
1241 plugin->name, plugin->port);
1242 return GNUNET_SYSERR;
1244 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1246 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1248 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1249 "Failed to start %s IPv6 server component on port %u\n",
1250 plugin->name, plugin->port);
1251 return GNUNET_SYSERR;
1253 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1254 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1255 "%s server component started on port %u\n", plugin->name,
1261 server_stop (struct Plugin *plugin)
1263 struct Session *s = NULL;
1264 struct Session *t = NULL;
1266 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1267 plugin->server_v4 = NULL;
1269 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1270 plugin->server_v6 = NULL;
1272 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1274 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1275 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1278 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1280 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1281 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1284 if (server_v6_tmp != NULL)
1286 MHD_stop_daemon (server_v4_tmp);
1288 if (server_v6_tmp != NULL)
1290 MHD_stop_daemon (server_v6_tmp);
1293 /* cleaning up semi-sessions never propagated */
1294 s = plugin->server_semi_head;
1298 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1299 "Deleting semi-sessions %p\n", s);
1302 struct HTTP_Message *msg = s->msg_head;
1303 struct HTTP_Message *tmp = NULL;
1309 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1310 if (msg->transmit_cont != NULL)
1312 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1325 GNUNET_free_non_null (plugin->crypto_init);
1326 GNUNET_free_non_null (plugin->cert);
1327 GNUNET_free_non_null (plugin->key);
1330 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1331 "%s server component stopped\n", plugin->name);
1336 /* end of plugin_transport_http.c */