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 struct ServerConnection
38 /* should this connection get disconnected? GNUNET_YES/NO */
41 struct Session *session;
42 struct MHD_Connection *mhd_conn;
46 * Function that queries MHD's select sets and
47 * starts the task waiting for them.
48 * @param plugin plugin
49 * @param daemon_handle the MHD daemon handle
50 * @return gnunet task identifier
52 static GNUNET_SCHEDULER_TaskIdentifier
53 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
57 server_log (void *arg, const char *fmt, va_list ap)
61 vsnprintf (text, sizeof (text), fmt, ap);
63 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Server: %s\n", text);
67 * Check if incoming connection is accepted.
68 * NOTE: Here every connection is accepted
69 * @param cls plugin as closure
70 * @param addr address of incoming connection
71 * @param addr_len address length of incoming connection
72 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
76 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
78 struct Plugin *plugin = cls;
80 if (plugin->cur_connections <= plugin->max_connections)
84 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
85 "Server: Cannot accept new connections\n");
93 server_load_file (const char *file)
95 struct GNUNET_DISK_FileHandle *gn_file;
99 if (0 != STAT (file, &fstat))
101 text = GNUNET_malloc (fstat.st_size + 1);
103 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
104 GNUNET_DISK_PERM_USER_READ);
110 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fstat.st_size))
113 GNUNET_DISK_file_close (gn_file);
116 text[fstat.st_size] = '\0';
117 GNUNET_DISK_file_close (gn_file);
126 server_load_certificate (struct Plugin *plugin)
133 /* Get crypto init string from config
134 * If not present just use default values */
136 GNUNET_assert (GNUNET_OK ==
137 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
140 &plugin->crypto_init));
143 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
144 "KEY_FILE", &key_file))
146 key_file = GNUNET_strdup ("https_key.key");
150 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
151 "CERT_FILE", &cert_file))
153 GNUNET_asprintf (&cert_file, "%s", "https_cert.crt");
156 /* read key & certificates from file */
158 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
159 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
160 key_file, cert_file);
163 plugin->key = server_load_file (key_file);
164 plugin->cert = server_load_file (cert_file);
166 if ((plugin->key == NULL) || (plugin->cert == NULL))
168 struct GNUNET_OS_Process *cert_creation;
170 GNUNET_free_non_null (plugin->key);
172 GNUNET_free_non_null (plugin->cert);
176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
177 "No usable TLS certificate found, creating certificate\n");
181 GNUNET_OS_start_process (NULL, NULL,
182 "gnunet-transport-certificate-creation",
183 "gnunet-transport-certificate-creation",
184 key_file, cert_file, NULL);
185 if (cert_creation == NULL)
187 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
189 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
190 GNUNET_free (key_file);
191 GNUNET_free (cert_file);
193 GNUNET_free_non_null (plugin->key);
195 GNUNET_free_non_null (plugin->cert);
197 GNUNET_free_non_null (plugin->crypto_init);
198 plugin->crypto_init = NULL;
200 return GNUNET_SYSERR;
202 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
203 GNUNET_OS_process_close (cert_creation);
205 plugin->key = server_load_file (key_file);
206 plugin->cert = server_load_file (cert_file);
209 if ((plugin->key == NULL) || (plugin->cert == NULL))
211 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
213 ("No usable TLS certificate found and creating one failed!\n"),
215 GNUNET_free (key_file);
216 GNUNET_free (cert_file);
218 GNUNET_free_non_null (plugin->key);
220 GNUNET_free_non_null (plugin->cert);
222 GNUNET_free_non_null (plugin->crypto_init);
223 plugin->crypto_init = NULL;
225 return GNUNET_SYSERR;
227 GNUNET_free (key_file);
228 GNUNET_free (cert_file);
230 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
239 * Reschedule the execution of both IPv4 and IPv6 server
240 * @param plugin the plugin
241 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
246 server_reschedule (struct Plugin *plugin, int now)
248 if (plugin->server_v4 != NULL)
250 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
252 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
253 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
255 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
258 if (plugin->server_v6 != NULL)
260 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
262 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
263 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
265 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
270 * Callback called by MessageStreamTokenizer when a message has arrived
271 * @param cls current session as closure
272 * @param client clien
273 * @param message the message to be forwarded to transport service
276 server_receive_mst_cb (void *cls, void *client,
277 const struct GNUNET_MessageHeader *message)
279 struct Session *s = cls;
282 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)
294 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
295 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
296 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen),
303 * Callback called by MHD when it needs data to send
304 * @param cls current session
305 * @param pos position in buffer
306 * @param buf the buffer to write data to
307 * @param max max number of bytes available in buffer
308 * @return bytes written to buffer
311 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
313 struct Session *s = cls;
315 struct HTTP_Message *msg;
323 if ((msg->size - msg->pos) <= max)
325 memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
326 bytes_read = msg->size - msg->pos;
327 msg->pos += (msg->size - msg->pos);
331 memcpy (buf, &msg->buf[msg->pos], max);
336 /* removing message */
337 if (msg->pos == msg->size)
339 if (NULL != msg->transmit_cont)
340 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
341 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
347 struct Plugin *plugin = s->plugin;
349 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
350 "Server: %X: sent %u bytes\n", s, bytes_read);
355 static struct ServerConnection *
356 server_lookup_session (struct Plugin *plugin,
357 struct MHD_Connection *mhd_connection, const char *url,
360 struct Session *s = NULL;
362 struct ServerConnection *sc = NULL;
363 const union MHD_ConnectionInfo *conn_info;
365 struct IPv4HttpAddress a4;
366 struct IPv6HttpAddress a6;
367 struct sockaddr_in *s4;
368 struct sockaddr_in6 *s6;
371 struct GNUNET_PeerIdentity target;
372 int check = GNUNET_NO;
377 MHD_get_connection_info (mhd_connection,
378 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
379 if ((conn_info->client_addr->sa_family != AF_INET) &&
380 (conn_info->client_addr->sa_family != AF_INET6))
383 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
386 char *tagc = (char *) &url[105];
388 memcpy (&hash, &url[1], 103);
391 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
392 &(target.hashPubKey)))
394 tag = strtoul (tagc, NULL, 10);
400 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
401 direction = _RECEIVE;
402 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
405 if (check == GNUNET_NO)
408 plugin->cur_connections++;
411 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
412 "Server: New inbound connection from %s with tag %u\n",
413 GNUNET_i2s (&target), tag);
415 /* find duplicate session */
422 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
424 /* FIXME add source address comparison */
432 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
433 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
434 GNUNET_i2s (&target));
439 /* find semi-session */
440 t = plugin->server_semi_head;
444 /* FIXME add source address comparison */
445 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
457 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
458 "Server: Found existing semi-session for `%s'\n",
459 GNUNET_i2s (&target));
462 if ((direction == _SEND) && (t->server_send != NULL))
465 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
466 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
467 GNUNET_i2s (&target));
474 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
475 plugin->server_semi_tail, s);
476 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));
485 if ((direction == _RECEIVE) && (t->server_recv != NULL))
488 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
489 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
490 GNUNET_i2s (&target));
497 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
498 plugin->server_semi_tail, s);
499 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
501 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
502 "Server: Found matching semi-session, merging session for peer `%s'\n",
503 GNUNET_i2s (&target));
509 /* create new session */
511 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
512 "Server: Creating new session for peer `%s' \n",
513 GNUNET_i2s (&target));
516 switch (conn_info->client_addr->sa_family)
519 s4 = ((struct sockaddr_in *) conn_info->client_addr);
520 a4.u4_port = s4->sin_port;
521 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
523 a_len = sizeof (struct IPv4HttpAddress);
526 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
527 a6.u6_port = s6->sin6_port;
528 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
530 a_len = sizeof (struct IPv6HttpAddress);
537 s = create_session (plugin, &target, a, a_len, NULL, NULL);
539 s->inbound = GNUNET_YES;
540 s->next_receive = GNUNET_TIME_absolute_get_zero ();
542 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
544 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
546 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
547 plugin->server_semi_tail, s);
552 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
553 "Server: Invalid connection request\n");
558 sc = GNUNET_malloc (sizeof (struct ServerConnection));
559 sc->mhd_conn = mhd_connection;
560 sc->direction = direction;
562 if (direction == _SEND)
564 if (direction == _RECEIVE)
567 #if MHD_VERSION >= 0x00090E00
568 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
571 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
572 "Server: Setting timeout for %X to %u sec.\n", sc, to);
574 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
575 server_reschedule (plugin, GNUNET_NO);
581 * Process GET or PUT request received via MHD. For
582 * GET, queue response that will send back our pending
583 * messages. For PUT, process incoming data and send
584 * to GNUnet core. In either case, check if a session
585 * already exists and create a new one if not.
588 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
589 const char *url, const char *method, const char *version,
590 const char *upload_data, size_t * upload_data_size,
591 void **httpSessionCache)
594 struct Plugin *plugin = cls;
595 struct ServerConnection *sc = *httpSessionCache;
596 struct Session *s = NULL;
599 struct MHD_Response *response;
601 GNUNET_assert (cls != NULL);
605 sc = server_lookup_session (plugin, mhd_connection, url, method);
607 (*httpSessionCache) = sc;
611 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
612 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
613 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
614 MHD_destroy_response (response);
619 /* existing connection */
620 sc = (*httpSessionCache);
623 /* connection is to be disconnected */
624 if (sc->disconnect == GNUNET_YES)
627 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
629 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
631 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
632 "Sent HTTP/1.1: 200 OK as PUT Response\n");
634 MHD_destroy_response (response);
638 GNUNET_assert (s != NULL);
639 if (sc->direction == _SEND)
642 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
644 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
645 MHD_destroy_response (response);
648 if (sc->direction == _RECEIVE)
650 if (*upload_data_size == 0)
653 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
654 "Server: Peer `%s' PUT on address `%s' connected\n",
655 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr,
662 if ((*upload_data_size > 0))
665 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
666 "Server: peer `%s' PUT on address `%s' received %Zu bytes\n",
667 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr,
671 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
673 if ((s->next_receive.abs_value <= now.abs_value))
676 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
677 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
680 if (s->msg_tk == NULL)
682 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
685 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
686 *upload_data_size, GNUNET_NO, GNUNET_NO);
688 #if MHD_VERSION >= 0x00090E00
689 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
690 struct ServerConnection *t = NULL;
693 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
694 "Server: Received %Zu bytes\n", *upload_data_size);
697 /* Setting timeouts for other connections */
698 if (s->server_recv != NULL)
702 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
703 "Server: Setting timeout for %X to %u sec.\n", t,
706 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
709 if (s->server_send != NULL)
713 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
714 "Server: Setting timeout for %X to %u sec.\n", t,
717 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
720 server_reschedule (plugin, GNUNET_NO);
722 (*upload_data_size) = 0;
727 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
728 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
729 s, now.abs_value - s->next_receive.abs_value);
741 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
742 void **httpSessionCache)
744 struct ServerConnection *sc = *httpSessionCache;
745 struct ServerConnection *tc = *httpSessionCache;
746 struct Session *s = NULL;
747 struct Session *t = NULL;
748 struct Plugin *plugin = NULL;
755 if (sc->direction == _SEND)
758 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
759 "Server: %X peer `%s' GET on address `%s' disconnected\n",
760 s->server_send, GNUNET_i2s (&s->target),
761 GNUNET_a2s (s->addr, s->addrlen));
763 s->server_send = NULL;
765 if (s->server_recv != NULL)
768 tc->disconnect = GNUNET_YES;
769 #if MHD_VERSION >= 0x00090E00
770 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
775 if (sc->direction == _RECEIVE)
778 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
779 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
780 s->server_recv, GNUNET_i2s (&s->target),
781 GNUNET_a2s (s->addr, s->addrlen));
783 s->server_recv = NULL;
784 if (s->server_send != NULL)
787 tc->disconnect = GNUNET_YES;
788 #if MHD_VERSION >= 0x00090E00
789 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
793 if (s->msg_tk != NULL)
795 GNUNET_SERVER_mst_destroy (s->msg_tk);
801 t = plugin->server_semi_head;
806 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
807 plugin->server_semi_tail, s);
808 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
813 plugin->cur_connections--;
815 server_reschedule (plugin, GNUNET_NO);
817 if ((s->server_send == NULL) && (s->server_recv == NULL))
820 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
821 "Server: peer `%s' on address `%s' disconnected\n",
822 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen));
824 if (s->msg_tk != NULL)
826 GNUNET_SERVER_mst_destroy (s->msg_tk);
830 notify_session_end (s->plugin, &s->target, s);
835 server_disconnect (struct Session *s)
837 struct Plugin *plugin = s->plugin;
838 struct Session *t = plugin->head;
842 if (t->inbound == GNUNET_YES)
844 if (t->server_send != NULL)
846 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
848 if (t->server_send != NULL)
850 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
861 server_send (struct Session *s, struct HTTP_Message *msg)
863 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
864 server_reschedule (s->plugin, GNUNET_YES);
871 * Call MHD IPv4 to process pending requests and then go back
872 * and schedule the next run.
873 * @param cls plugin as closure
874 * @param tc task context
877 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
879 struct Plugin *plugin = cls;
881 GNUNET_assert (cls != NULL);
883 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
885 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
888 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
889 if (plugin->server_v4 != NULL)
890 plugin->server_v4_task =
891 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
896 * Call MHD IPv6 to process pending requests and then go back
897 * and schedule the next run.
898 * @param cls plugin as closure
899 * @param tc task context
902 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
904 struct Plugin *plugin = cls;
906 GNUNET_assert (cls != NULL);
908 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
910 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
913 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
914 if (plugin->server_v6 != NULL)
915 plugin->server_v6_task =
916 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
920 * Function that queries MHD's select sets and
921 * starts the task waiting for them.
922 * @param plugin plugin
923 * @param daemon_handle the MHD daemon handle
924 * @return gnunet task identifier
926 static GNUNET_SCHEDULER_TaskIdentifier
927 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
930 GNUNET_SCHEDULER_TaskIdentifier ret;
934 struct GNUNET_NETWORK_FDSet *wrs;
935 struct GNUNET_NETWORK_FDSet *wws;
936 struct GNUNET_NETWORK_FDSet *wes;
938 unsigned long long timeout;
939 static unsigned long long last_timeout = 0;
942 struct GNUNET_TIME_Relative tv;
944 ret = GNUNET_SCHEDULER_NO_TASK;
948 wrs = GNUNET_NETWORK_fdset_create ();
949 wes = GNUNET_NETWORK_fdset_create ();
950 wws = GNUNET_NETWORK_fdset_create ();
952 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
953 haveto = MHD_get_timeout (daemon_handle, &timeout);
954 if (haveto == MHD_YES)
956 if (timeout != last_timeout)
959 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
960 "SELECT Timeout changed from %llu to %llu\n",
961 last_timeout, timeout);
963 last_timeout = timeout;
965 tv.rel_value = (uint64_t) timeout;
968 tv = GNUNET_TIME_UNIT_SECONDS;
969 /* Force immediate run, since we have outbound data to send */
970 if (now == GNUNET_YES)
971 tv = GNUNET_TIME_UNIT_MILLISECONDS;
972 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
973 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
974 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
975 if (daemon_handle == plugin->server_v4)
977 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
979 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
980 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
984 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
985 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
986 &server_v4_run, plugin);
988 if (daemon_handle == plugin->server_v6)
990 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
992 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
993 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
997 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
998 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
999 &server_v6_run, plugin);
1001 GNUNET_NETWORK_fdset_destroy (wrs);
1002 GNUNET_NETWORK_fdset_destroy (wws);
1003 GNUNET_NETWORK_fdset_destroy (wes);
1008 server_start (struct Plugin *plugin)
1010 int res = GNUNET_OK;
1011 unsigned int timeout;
1014 res = server_load_certificate (plugin);
1015 if (res == GNUNET_SYSERR)
1017 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1018 "Could not load or create server certificate! Loading plugin failed!\n");
1024 #if MHD_VERSION >= 0x00090E00
1025 timeout = GNUNET_CONSTANTS_DISCONNECT_SESSION_TIMEOUT.rel_value / 1000;
1026 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1027 "MHD can set timeout per connection! Default time out %u sec.\n",
1030 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1031 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1032 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1035 plugin->server_v4 = NULL;
1036 if (plugin->ipv4 == GNUNET_YES)
1038 plugin->server_v4 = MHD_start_daemon (
1045 MHD_NO_FLAG, plugin->port,
1046 &server_accept_cb, plugin,
1047 &server_access_cb, plugin,
1048 MHD_OPTION_SOCK_ADDR,
1049 (struct sockaddr_in *)
1050 plugin->server_addr_v4,
1051 MHD_OPTION_CONNECTION_LIMIT,
1053 plugin->max_connections,
1055 MHD_OPTION_HTTPS_PRIORITIES,
1056 plugin->crypto_init,
1057 MHD_OPTION_HTTPS_MEM_KEY,
1059 MHD_OPTION_HTTPS_MEM_CERT,
1062 MHD_OPTION_CONNECTION_TIMEOUT,
1064 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1066 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1067 MHD_OPTION_NOTIFY_COMPLETED,
1068 &server_disconnect_cb, plugin,
1069 MHD_OPTION_EXTERNAL_LOGGER,
1070 server_log, NULL, MHD_OPTION_END);
1072 plugin->server_v6 = NULL;
1073 if (plugin->ipv6 == GNUNET_YES)
1075 plugin->server_v6 = MHD_start_daemon (
1082 MHD_USE_IPv6, plugin->port,
1083 &server_accept_cb, plugin,
1084 &server_access_cb, plugin,
1085 MHD_OPTION_SOCK_ADDR,
1086 (struct sockaddr_in6 *)
1087 plugin->server_addr_v6,
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);
1111 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1113 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1114 "Failed to start %s IPv4 server component on port %u\n",
1115 plugin->name, plugin->port);
1116 return GNUNET_SYSERR;
1118 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1120 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1121 "Failed to start %s IPv6 server component on port %u\n",
1122 plugin->name, plugin->port);
1123 return GNUNET_SYSERR;
1126 server_reschedule (plugin, GNUNET_NO);
1129 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1130 "%s server component started on port %u\n", plugin->name,
1137 server_stop (struct Plugin *plugin)
1139 struct Session *s = NULL;
1140 struct Session *t = NULL;
1142 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1144 plugin->server_v4 = NULL;
1145 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1147 plugin->server_v6 = NULL;
1149 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1151 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1152 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1155 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1157 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1158 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1161 if (server_v6_tmp != NULL)
1163 MHD_stop_daemon (server_v4_tmp);
1165 if (server_v6_tmp != NULL)
1167 MHD_stop_daemon (server_v6_tmp);
1170 /* cleaning up semi-sessions never propagated */
1171 s = plugin->server_semi_head;
1180 GNUNET_free_non_null (plugin->crypto_init);
1181 GNUNET_free_non_null (plugin->cert);
1182 GNUNET_free_non_null (plugin->key);
1186 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1187 "%s server component stopped\n", plugin->name);
1193 /* end of plugin_transport_http.c */