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, 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;
378 int check = GNUNET_NO;
380 int direction = GNUNET_SYSERR;
382 conn_info = MHD_get_connection_info (mhd_connection,
383 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
384 if ((conn_info->client_addr->sa_family != AF_INET) &&
385 (conn_info->client_addr->sa_family != AF_INET6))
388 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
391 char *tagc = (char *) &url[105];
393 memcpy (&hash, &url[1], 103);
396 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
397 &(target.hashPubKey)))
399 tag = strtoul (tagc, NULL, 10);
405 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
406 direction = _RECEIVE;
407 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
416 if (check == GNUNET_NO)
419 plugin->cur_connections++;
420 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
421 "Server: New %s connection from %s with tag %u\n",
423 GNUNET_i2s (&target), tag);
425 /* find duplicate session */
430 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
432 /* FIXME add source address comparison */
439 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
440 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
441 GNUNET_i2s (&target));
445 /* find semi-session */
446 t = plugin->server_semi_head;
450 /* FIXME add source address comparison */
451 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
461 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
462 "Server: Found existing semi-session for `%s'\n",
463 GNUNET_i2s (&target));
465 if ((direction == _SEND) && (t->server_send != NULL))
467 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
468 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
469 GNUNET_i2s (&target));
475 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
476 plugin->server_semi_tail, s);
477 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
478 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
479 "Server: Found matching semi-session, merging session for peer `%s'\n",
480 GNUNET_i2s (&target));
482 plugin->inbound_sessions ++;
483 GNUNET_STATISTICS_set (plugin->env->stats,
484 "# HTTP inbound sessions",
485 plugin->inbound_sessions,
487 GNUNET_assert (NULL != s);
490 if ((direction == _RECEIVE) && (t->server_recv != NULL))
492 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
493 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
494 GNUNET_i2s (&target));
500 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
501 plugin->server_semi_tail, s);
502 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
503 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
504 "Server: Found matching semi-session, merging session for peer `%s'\n",
505 GNUNET_i2s (&target));
506 plugin->inbound_sessions ++;
507 GNUNET_STATISTICS_set (plugin->env->stats,
508 "# HTTP inbound sessions",
509 plugin->inbound_sessions,
511 GNUNET_assert (NULL != s);
516 /* create new session */
517 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
518 "Server: Creating new session for peer `%s' \n",
519 GNUNET_i2s (&target));
520 switch (conn_info->client_addr->sa_family)
523 s4 = ((struct sockaddr_in *) conn_info->client_addr);
524 a4.u4_port = s4->sin_port;
525 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
527 a_len = sizeof (struct IPv4HttpAddress);
528 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
531 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
532 a6.u6_port = s6->sin6_port;
533 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
535 a_len = sizeof (struct IPv6HttpAddress);
536 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
542 s = create_session (plugin, &target, a, a_len);
543 GNUNET_assert (NULL != s);
544 s->ats_address_network_type = ats.value;
545 s->inbound = GNUNET_YES;
546 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
548 s->server_recv = NULL;
549 s->server_send = NULL;
551 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
552 plugin->server_semi_tail, s);
556 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
557 "Server: Invalid connection request\n");
561 sc = GNUNET_malloc (sizeof (struct ServerConnection));
562 sc->mhd_conn = mhd_connection;
563 sc->direction = direction;
565 if (direction == _SEND)
567 if (direction == _RECEIVE)
570 #if MHD_VERSION >= 0x00090E00
571 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
573 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
574 "Server: Setting timeout for %p to %u sec.\n", sc, to);
575 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
577 struct MHD_Daemon *d = NULL;
579 if (s->addrlen == sizeof (struct IPv6HttpAddress))
580 d = plugin->server_v6;
581 if (s->addrlen == sizeof (struct IPv4HttpAddress))
582 d = plugin->server_v4;
584 server_reschedule (plugin, d, GNUNET_NO);
590 * Process GET or PUT request received via MHD. For
591 * GET, queue response that will send back our pending
592 * messages. For PUT, process incoming data and send
593 * to GNUnet core. In either case, check if a session
594 * already exists and create a new one if not.
597 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
598 const char *url, const char *method, const char *version,
599 const char *upload_data, size_t * upload_data_size,
600 void **httpSessionCache)
602 struct Plugin *plugin = cls;
603 struct ServerConnection *sc = *httpSessionCache;
605 struct MHD_Response *response;
608 GNUNET_assert (cls != NULL);
612 sc = server_lookup_serverconnection (plugin, mhd_connection, url, method);
614 (*httpSessionCache) = sc;
618 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
619 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
620 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
621 MHD_destroy_response (response);
627 /* 'old' connection */
628 if (NULL == server_lookup_session (plugin, sc))
630 /* Session was already disconnected */
635 /* existing connection */
636 sc = (*httpSessionCache);
639 GNUNET_assert (NULL != s);
641 /* connection is to be disconnected */
642 if (sc->disconnect == GNUNET_YES)
644 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
646 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
648 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
649 MHD_destroy_response (response);
653 GNUNET_assert (s != NULL);
654 /* Check if both directions are connected */
655 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
657 /* Delayed read from since not both semi-connections are connected */
661 if (sc->direction == _SEND)
664 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
666 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
667 MHD_destroy_response (response);
670 if (sc->direction == _RECEIVE)
672 if (*upload_data_size == 0)
674 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
675 "Server: Peer `%s' PUT on address `%s' connected\n",
676 GNUNET_i2s (&s->target),
677 http_plugin_address_to_string (NULL, s->addr,
683 if ((*upload_data_size > 0))
685 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
686 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
687 GNUNET_i2s (&s->target),
688 http_plugin_address_to_string (NULL, s->addr,
691 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
693 if ((s->next_receive.abs_value <= now.abs_value))
695 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
696 "Server: %p: PUT with %u bytes forwarded to MST\n", s,
698 if (s->msg_tk == NULL)
700 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
702 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
703 *upload_data_size, GNUNET_NO, GNUNET_NO);
705 #if MHD_VERSION >= 0x00090E00
706 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
707 struct ServerConnection *t = NULL;
709 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
710 "Server: Received %u bytes\n", *upload_data_size);
711 /* Setting timeouts for other connections */
712 if (s->server_recv != NULL)
715 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
716 "Server: Setting timeout for %p to %u sec.\n", t,
718 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
721 if (s->server_send != NULL)
724 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
725 "Server: Setting timeout for %p to %u sec.\n", t,
727 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
730 struct MHD_Daemon *d = NULL;
732 if (s->addrlen == sizeof (struct IPv6HttpAddress))
733 d = plugin->server_v6;
734 if (s->addrlen == sizeof (struct IPv4HttpAddress))
735 d = plugin->server_v4;
736 server_reschedule (plugin, d, GNUNET_NO);
738 (*upload_data_size) = 0;
742 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
743 "Server: %p no inbound bandwidth available! Next read was delayed by %llu ms\n",
744 s, now.abs_value - s->next_receive.abs_value);
755 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
756 void **httpSessionCache)
758 struct ServerConnection *sc = *httpSessionCache;
759 struct ServerConnection *tc = NULL;
760 struct Session *s = NULL;
761 struct Session *t = NULL;
762 struct Plugin *plugin = NULL;
767 if (NULL == (s = server_lookup_session (p, sc)))
770 GNUNET_assert (NULL != p);
771 if (GNUNET_NO == exist_session(p, s))
775 if (sc->direction == _SEND)
778 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
779 "Server: %p peer `%s' GET on address `%s' disconnected\n",
780 s->server_send, GNUNET_i2s (&s->target),
781 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
782 s->server_send = NULL;
783 if (NULL != (tc = s->server_recv))
785 tc->disconnect = GNUNET_YES;
786 GNUNET_assert (NULL != tc->mhd_conn);
787 #if MHD_VERSION >= 0x00090E00
788 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
793 if (sc->direction == _RECEIVE)
795 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
796 "Server: %p peer `%s' PUT on address `%s' disconnected\n",
797 s->server_recv, GNUNET_i2s (&s->target),
798 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
799 s->server_recv = NULL;
800 if (NULL != (tc = s->server_send))
802 tc->disconnect = GNUNET_YES;
803 GNUNET_assert (NULL != tc->mhd_conn);
804 #if MHD_VERSION >= 0x00090E00
805 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
809 if (s->msg_tk != NULL)
811 GNUNET_SERVER_mst_destroy (s->msg_tk);
818 t = plugin->server_semi_head;
823 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
824 plugin->server_semi_tail, s);
825 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
830 plugin->cur_connections--;
832 struct MHD_Daemon *d = NULL;
834 if (s->addrlen == sizeof (struct IPv6HttpAddress))
835 d = plugin->server_v6;
836 if (s->addrlen == sizeof (struct IPv4HttpAddress))
837 d = plugin->server_v4;
838 server_reschedule (plugin, d, GNUNET_NO);
840 if ((s->server_send == NULL) && (s->server_recv == NULL))
842 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
843 "Server: peer `%s' on address `%s' disconnected\n",
844 GNUNET_i2s (&s->target),
845 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
846 if (s->msg_tk != NULL)
848 GNUNET_SERVER_mst_destroy (s->msg_tk);
852 GNUNET_assert (plugin->inbound_sessions > 0);
853 plugin->inbound_sessions --;
854 GNUNET_STATISTICS_set (plugin->env->stats,
855 "# HTTP inbound sessions",
856 plugin->inbound_sessions, GNUNET_NO);
858 notify_session_end (s->plugin, &s->target, s);
863 server_disconnect (struct Session *s)
865 if (s->server_send != NULL)
867 ((struct ServerConnection *) s->server_send)->disconnect = GNUNET_YES;
869 if (s->server_recv != NULL)
871 ((struct ServerConnection *) s->server_recv)->disconnect = GNUNET_YES;
878 server_send (struct Session *s, struct HTTP_Message *msg)
880 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
882 if (s->addrlen == sizeof (struct IPv4HttpAddress))
884 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
886 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
888 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
891 return GNUNET_SYSERR;
898 * Call MHD IPv4 to process pending requests and then go back
899 * and schedule the next run.
900 * @param cls plugin as closure
901 * @param tc task context
904 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
906 struct Plugin *plugin = cls;
908 GNUNET_assert (cls != NULL);
910 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
911 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
914 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
915 "Running IPv4 server\n");
917 plugin->server_v4_immediately = GNUNET_NO;
918 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
919 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
924 * Call MHD IPv6 to process pending requests and then go back
925 * and schedule the next run.
926 * @param cls plugin as closure
927 * @param tc task context
930 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
932 struct Plugin *plugin = cls;
934 GNUNET_assert (cls != NULL);
935 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
936 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
939 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
940 "Running IPv6 server\n");
942 plugin->server_v6_immediately = GNUNET_NO;
943 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
944 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
948 * Function that queries MHD's select sets and
949 * starts the task waiting for them.
950 * @param plugin plugin
951 * @param daemon_handle the MHD daemon handle
952 * @return gnunet task identifier
954 static GNUNET_SCHEDULER_TaskIdentifier
955 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
958 GNUNET_SCHEDULER_TaskIdentifier ret;
962 struct GNUNET_NETWORK_FDSet *wrs;
963 struct GNUNET_NETWORK_FDSet *wws;
964 struct GNUNET_NETWORK_FDSet *wes;
966 unsigned MHD_LONG_LONG timeout;
967 static unsigned long long last_timeout = 0;
970 struct GNUNET_TIME_Relative tv;
972 ret = GNUNET_SCHEDULER_NO_TASK;
976 wrs = GNUNET_NETWORK_fdset_create ();
977 wes = GNUNET_NETWORK_fdset_create ();
978 wws = GNUNET_NETWORK_fdset_create ();
980 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
981 haveto = MHD_get_timeout (daemon_handle, &timeout);
982 if (haveto == MHD_YES)
984 if (timeout != last_timeout)
987 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
988 "SELECT Timeout changed from %llu to %llu\n",
989 last_timeout, timeout);
991 last_timeout = timeout;
993 tv.rel_value = (uint64_t) timeout;
996 tv = GNUNET_TIME_UNIT_SECONDS;
997 /* Force immediate run, since we have outbound data to send */
998 if (now == GNUNET_YES)
999 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1000 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1001 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1002 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1004 if (daemon_handle == plugin->server_v4)
1006 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1008 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1009 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1012 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1013 "Scheduling IPv4 server task in %llu ms\n", tv);
1016 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1018 &server_v4_run, plugin);
1020 if (daemon_handle == plugin->server_v6)
1022 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1024 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1025 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1028 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1029 "Scheduling IPv6 server task in %llu ms\n", tv);
1032 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1034 &server_v6_run, plugin);
1036 GNUNET_NETWORK_fdset_destroy (wrs);
1037 GNUNET_NETWORK_fdset_destroy (wws);
1038 GNUNET_NETWORK_fdset_destroy (wes);
1043 server_start (struct Plugin *plugin)
1045 int res = GNUNET_OK;
1046 unsigned int timeout;
1048 GNUNET_assert (NULL != plugin);
1051 res = server_load_certificate (plugin);
1052 if (res == GNUNET_SYSERR)
1054 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1055 "Could not load or create server certificate! Loading plugin failed!\n");
1061 #if MHD_VERSION >= 0x00090E00
1062 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1063 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1064 "MHD can set timeout per connection! Default time out %u sec.\n",
1067 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1068 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1069 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1072 plugin->server_v4 = NULL;
1073 if (plugin->ipv4 == GNUNET_YES)
1075 plugin->server_v4 = MHD_start_daemon (
1082 MHD_NO_FLAG, plugin->port,
1083 &server_accept_cb, plugin,
1084 &server_access_cb, plugin,
1085 MHD_OPTION_SOCK_ADDR,
1086 (struct sockaddr_in *)
1087 plugin->server_addr_v4,
1088 MHD_OPTION_CONNECTION_LIMIT,
1090 plugin->max_connections,
1092 MHD_OPTION_HTTPS_PRIORITIES,
1093 plugin->crypto_init,
1094 MHD_OPTION_HTTPS_MEM_KEY,
1096 MHD_OPTION_HTTPS_MEM_CERT,
1099 MHD_OPTION_CONNECTION_TIMEOUT,
1101 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1103 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1104 MHD_OPTION_NOTIFY_COMPLETED,
1105 &server_disconnect_cb, plugin,
1106 MHD_OPTION_EXTERNAL_LOGGER,
1107 server_log, NULL, MHD_OPTION_END);
1109 plugin->server_v6 = NULL;
1110 if (plugin->ipv6 == GNUNET_YES)
1112 plugin->server_v6 = MHD_start_daemon (
1119 MHD_USE_IPv6, plugin->port,
1120 &server_accept_cb, plugin,
1121 &server_access_cb, plugin,
1122 MHD_OPTION_SOCK_ADDR,
1123 (struct sockaddr_in6 *)
1124 plugin->server_addr_v6,
1125 MHD_OPTION_CONNECTION_LIMIT,
1127 plugin->max_connections,
1129 MHD_OPTION_HTTPS_PRIORITIES,
1130 plugin->crypto_init,
1131 MHD_OPTION_HTTPS_MEM_KEY,
1133 MHD_OPTION_HTTPS_MEM_CERT,
1136 MHD_OPTION_CONNECTION_TIMEOUT,
1138 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1140 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1141 MHD_OPTION_NOTIFY_COMPLETED,
1142 &server_disconnect_cb, plugin,
1143 MHD_OPTION_EXTERNAL_LOGGER,
1144 server_log, NULL, MHD_OPTION_END);
1148 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1150 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1151 "Failed to start %s IPv4 server component on port %u\n",
1152 plugin->name, plugin->port);
1153 return GNUNET_SYSERR;
1155 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1157 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1159 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1160 "Failed to start %s IPv6 server component on port %u\n",
1161 plugin->name, plugin->port);
1162 return GNUNET_SYSERR;
1164 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1165 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1166 "%s server component started on port %u\n", plugin->name,
1172 server_stop (struct Plugin *plugin)
1174 struct Session *s = NULL;
1175 struct Session *t = NULL;
1177 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1179 plugin->server_v4 = NULL;
1180 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1182 plugin->server_v6 = NULL;
1184 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1186 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1187 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1190 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1192 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1193 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1196 if (server_v6_tmp != NULL)
1198 MHD_stop_daemon (server_v4_tmp);
1200 if (server_v6_tmp != NULL)
1202 MHD_stop_daemon (server_v6_tmp);
1205 /* cleaning up semi-sessions never propagated */
1206 s = plugin->server_semi_head;
1210 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1211 "Deleting semi-sessions %p\n", s);
1214 struct HTTP_Message *msg = s->msg_head;
1215 struct HTTP_Message *tmp = NULL;
1221 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1222 if (msg->transmit_cont != NULL)
1224 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1237 GNUNET_free_non_null (plugin->crypto_init);
1238 GNUNET_free_non_null (plugin->cert);
1239 GNUNET_free_non_null (plugin->key);
1242 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1243 "%s server component stopped\n", plugin->name);
1248 /* end of plugin_transport_http.c */