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, int now);
56 server_log (void *arg, const char *fmt, va_list ap)
60 vsnprintf (text, sizeof (text), fmt, ap);
62 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Server: %s\n", text);
66 * Check if incoming connection is accepted.
67 * NOTE: Here every connection is accepted
68 * @param cls plugin as closure
69 * @param addr address of incoming connection
70 * @param addr_len address length of incoming connection
71 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
75 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
77 struct Plugin * plugin = cls;
79 if (plugin->cur_connections <= plugin->max_connections)
83 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Server: Cannot accept new connections\n");
91 server_load_file (const char *file)
93 struct GNUNET_DISK_FileHandle *gn_file;
97 if (0 != STAT (file, &fstat))
99 text = GNUNET_malloc (fstat.st_size + 1);
101 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
102 GNUNET_DISK_PERM_USER_READ);
108 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fstat.st_size))
111 GNUNET_DISK_file_close (gn_file);
114 text[fstat.st_size] = '\0';
115 GNUNET_DISK_file_close (gn_file);
124 server_load_certificate (struct Plugin *plugin)
131 /* Get crypto init string from config
132 * If not present just use default values */
134 GNUNET_assert (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
135 "CRYPTO_INIT", &plugin->crypto_init));
138 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
139 "KEY_FILE", &key_file))
141 key_file = GNUNET_strdup ("https_key.key");
145 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
146 "CERT_FILE", &cert_file))
148 GNUNET_asprintf(&cert_file, "%s", "https_cert.crt");
151 /* read key & certificates from file */
153 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
154 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
155 key_file, cert_file);
158 plugin->key = server_load_file (key_file);
159 plugin->cert = server_load_file (cert_file);
161 if ((plugin->key == NULL) || (plugin->cert == NULL))
163 struct GNUNET_OS_Process *cert_creation;
165 GNUNET_free_non_null (plugin->key);
167 GNUNET_free_non_null (plugin->cert);
171 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
172 "No usable TLS certificate found, creating certificate\n");
176 GNUNET_OS_start_process (NULL, NULL,
177 "gnunet-transport-certificate-creation",
178 "gnunet-transport-certificate-creation",
179 key_file, cert_file, NULL);
180 if (cert_creation == NULL)
182 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
184 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
185 GNUNET_free (key_file);
186 GNUNET_free (cert_file);
188 GNUNET_free_non_null (plugin->key);
190 GNUNET_free_non_null (plugin->cert);
192 GNUNET_free_non_null (plugin->crypto_init);
193 plugin->crypto_init = NULL;
195 return GNUNET_SYSERR;
197 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
198 GNUNET_OS_process_close (cert_creation);
200 plugin->key = server_load_file (key_file);
201 plugin->cert = server_load_file (cert_file);
204 if ((plugin->key == NULL) || (plugin->cert == NULL))
206 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
208 ("No usable TLS certificate found and creating one failed!\n"),
210 GNUNET_free (key_file);
211 GNUNET_free (cert_file);
213 GNUNET_free_non_null (plugin->key);
215 GNUNET_free_non_null (plugin->cert);
217 GNUNET_free_non_null (plugin->crypto_init);
218 plugin->crypto_init = NULL;
220 return GNUNET_SYSERR;
222 GNUNET_free (key_file);
223 GNUNET_free (cert_file);
225 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
234 * Reschedule the execution of both IPv4 and IPv6 server
235 * @param plugin the plugin
236 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
241 server_reschedule (struct Plugin *plugin, int now)
243 if (plugin->server_v4 != NULL)
245 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
247 GNUNET_SCHEDULER_cancel(plugin->server_v4_task);
248 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
250 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
253 if (plugin->server_v6 != NULL)
255 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
257 GNUNET_SCHEDULER_cancel(plugin->server_v6_task);
258 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
260 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
265 * Callback called by MessageStreamTokenizer when a message has arrived
266 * @param cls current session as closure
267 * @param client clien
268 * @param message the message to be forwarded to transport service
271 server_receive_mst_cb (void *cls, void *client,
272 const struct GNUNET_MessageHeader *message)
274 struct Session *s = cls;
276 struct Plugin *plugin = s->plugin;
278 struct GNUNET_TIME_Relative delay;
280 delay = http_plugin_receive (s, &s->target, message, s, s->addr, s->addrlen);
281 if (delay.rel_value == GNUNET_TIME_UNIT_FOREVER_REL.rel_value)
283 // FIXME: terminate connection!
285 s->next_receive = GNUNET_TIME_relative_to_absolute (delay);
287 if (delay.rel_value > 0)
290 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
291 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen), delay);
297 * Callback called by MHD when it needs data to send
298 * @param cls current session
299 * @param pos position in buffer
300 * @param buf the buffer to write data to
301 * @param max max number of bytes available in buffer
302 * @return bytes written to buffer
305 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
307 struct Session *s = cls;
309 struct HTTP_Message *msg;
316 if ((msg->size - msg->pos) <= max)
318 memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
319 bytes_read = msg->size - msg->pos;
320 msg->pos += (msg->size - msg->pos);
324 memcpy (buf, &msg->buf[msg->pos], max);
329 /* removing message */
330 if (msg->pos == msg->size)
332 if (NULL != msg->transmit_cont)
333 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
334 GNUNET_CONTAINER_DLL_remove(s->msg_head, s->msg_tail, msg);
340 struct Plugin *plugin = s->plugin;
341 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
342 "Server: %X: sent %u bytes\n",
348 static struct ServerConnection *
349 server_lookup_session (struct Plugin *plugin,
350 struct MHD_Connection *mhd_connection,
354 struct Session *s = NULL;
356 struct ServerConnection *sc = NULL;
357 const union MHD_ConnectionInfo *conn_info;
359 struct IPv4HttpAddress a4;
360 struct IPv6HttpAddress a6;
361 struct sockaddr_in * s4;
362 struct sockaddr_in6 * s6;
365 struct GNUNET_PeerIdentity target;
366 int check = GNUNET_NO;
370 conn_info = MHD_get_connection_info (mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS);
371 if ((conn_info->client_addr->sa_family != AF_INET) && (conn_info->client_addr->sa_family != AF_INET6))
374 if ((strlen(&url[1]) >= 105) && (url[104] == ';'))
377 char * tagc = (char *) &url[105];
378 memcpy(&hash, &url[1], 103);
380 if (GNUNET_OK == GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
381 &(target.hashPubKey)))
383 tag = strtoul (tagc, NULL, 10);
389 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
390 direction = _RECEIVE;
391 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
394 if (check == GNUNET_NO)
397 plugin->cur_connections++;
400 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
401 "Server: New inbound connection from %s with tag %u\n", GNUNET_i2s(&target), tag);
403 /* find duplicate session */
409 if ((t->inbound) && (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
410 /* FIXME add source address comparison */
418 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
419 "Server: Duplicate session, dismissing new connection from peer `%s'\n", GNUNET_i2s (&target));
424 /* find semi-session */
425 t = plugin->server_semi_head;
429 /* FIXME add source address comparison */
430 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
442 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
443 "Server: Found existing semi-session for `%s'\n", GNUNET_i2s (&target));
446 if ((direction == _SEND) && (t->server_send != NULL))
449 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
450 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n", GNUNET_i2s (&target));
457 GNUNET_CONTAINER_DLL_remove(plugin->server_semi_head, plugin->server_semi_tail, s);
458 GNUNET_CONTAINER_DLL_insert(plugin->head, plugin->tail, s);
460 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
461 "Server: Found matching semi-session, merging session for peer `%s'\n", GNUNET_i2s (&target));
466 if ((direction == _RECEIVE) && (t->server_recv != NULL))
469 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
470 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n", GNUNET_i2s (&target));
477 GNUNET_CONTAINER_DLL_remove(plugin->server_semi_head, plugin->server_semi_tail, s);
478 GNUNET_CONTAINER_DLL_insert(plugin->head, plugin->tail, s);
480 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
481 "Server: Found matching semi-session, merging session for peer `%s'\n", GNUNET_i2s (&target));
487 /* create new session */
489 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
490 "Server: Creating new session for peer `%s' \n", GNUNET_i2s (&target));
493 switch (conn_info->client_addr->sa_family)
496 s4 = ((struct sockaddr_in * ) conn_info->client_addr);
497 a4.u4_port = s4->sin_port;
498 memcpy (&a4.ipv4_addr, &s4->sin_addr,
499 sizeof (struct in_addr));
501 a_len = sizeof (struct IPv4HttpAddress);
504 s6 = ((struct sockaddr_in6 * ) conn_info->client_addr);
505 a6.u6_port = s6->sin6_port;
506 memcpy (&a6.ipv6_addr, &s6->sin6_addr,
507 sizeof (struct in6_addr));
509 a_len = sizeof (struct IPv6HttpAddress);
515 s = create_session (plugin,
522 s->inbound = GNUNET_YES;
523 s->next_receive = GNUNET_TIME_absolute_get_zero();
525 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
527 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
529 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head, plugin->server_semi_tail, s);
534 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
535 "Server: Invalid connection request\n");
540 sc = GNUNET_malloc (sizeof (struct ServerConnection));
541 sc->mhd_conn = mhd_connection;
542 sc->direction = direction;
544 if (direction == _SEND)
546 if (direction == _RECEIVE)
549 #if MHD_VERSION >= 0x00090E00
550 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
552 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
553 "Server: Setting timeout for %X to %u sec.\n", sc, to);
555 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
556 server_reschedule (plugin, GNUNET_NO);
562 * Process GET or PUT request received via MHD. For
563 * GET, queue response that will send back our pending
564 * messages. For PUT, process incoming data and send
565 * to GNUnet core. In either case, check if a session
566 * already exists and create a new one if not.
569 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
570 const char *url, const char *method, const char *version,
571 const char *upload_data, size_t * upload_data_size,
572 void **httpSessionCache)
575 struct Plugin *plugin = cls;
576 struct ServerConnection *sc = *httpSessionCache;
577 struct Session *s = NULL;
580 struct MHD_Response *response;
582 GNUNET_assert (cls != NULL);
586 sc = server_lookup_session(plugin, mhd_connection, url, method);
588 (*httpSessionCache) = sc;
591 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
592 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
593 MHD_destroy_response (response);
598 /* existing connection */
599 sc = (*httpSessionCache);
602 /* connection is to be disconnected*/
603 if (sc->disconnect == GNUNET_YES)
605 response = MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!", MHD_NO, MHD_NO);
606 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
608 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
609 "Sent HTTP/1.1: 200 OK as PUT Response\n");
611 MHD_destroy_response (response);
615 GNUNET_assert (s != NULL);
616 if (sc->direction == _SEND)
618 response = MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
620 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
621 MHD_destroy_response (response);
624 if (sc->direction == _RECEIVE)
626 if (*upload_data_size == 0)
629 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
630 "Server: Peer `%s' PUT on address `%s' connected\n",
631 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen));
637 if ((*upload_data_size > 0))
640 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
641 "Server: peer `%s' PUT on address `%s' received %Zu bytes\n",
642 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen), *upload_data_size);
644 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get();
645 if (( s->next_receive.abs_value <= now.abs_value))
648 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
649 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
652 if (s->msg_tk == NULL)
654 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
656 res = GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data, *upload_data_size, GNUNET_NO, GNUNET_NO);
658 #if MHD_VERSION >= 0x00090E00
659 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
660 struct ServerConnection *t = NULL;
663 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
664 "Server: Received %Zu bytes\n", *upload_data_size);
667 /* Setting timeouts for other connections */
668 if (s->server_recv != NULL)
672 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
673 "Server: Setting timeout for %X to %u sec.\n", t, to);
675 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT, to);
677 if (s->server_send != NULL)
681 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
682 "Server: Setting timeout for %X to %u sec.\n", t, to);
684 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT, to);
686 server_reschedule (plugin, GNUNET_NO);
688 (*upload_data_size) = 0;
693 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
694 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n", s, now.abs_value - s->next_receive.abs_value);
706 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
707 void **httpSessionCache)
709 struct ServerConnection *sc = *httpSessionCache;
710 struct ServerConnection *tc = *httpSessionCache;
711 struct Session * s = NULL;
712 struct Session * t = NULL;
713 struct Plugin * plugin = NULL;
720 if (sc->direction == _SEND)
723 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
724 "Server: %X peer `%s' GET on address `%s' disconnected\n",
726 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen));
728 s->server_send = NULL;
730 if (s->server_recv != NULL)
733 tc->disconnect = GNUNET_YES;
734 #if MHD_VERSION >= 0x00090E00
735 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT, 1);
739 if (sc->direction == _RECEIVE)
742 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
743 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
745 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen));
747 s->server_recv = NULL;
748 if (s->server_send != NULL)
751 tc->disconnect = GNUNET_YES;
752 #if MHD_VERSION >= 0x00090E00
753 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT, 1);
756 if (s->msg_tk != NULL)
758 GNUNET_SERVER_mst_destroy(s->msg_tk);
764 t = plugin->server_semi_head;
769 GNUNET_CONTAINER_DLL_remove(plugin->server_semi_head, plugin->server_semi_tail, s);
770 GNUNET_CONTAINER_DLL_insert(plugin->head, plugin->tail, s);
775 plugin->cur_connections--;
777 server_reschedule (plugin, GNUNET_NO);
779 if ((s->server_send == NULL) && (s->server_recv == NULL))
782 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
783 "Server: peer `%s' on address `%s' disconnected\n",
784 GNUNET_i2s (&s->target), GNUNET_a2s (s->addr, s->addrlen));
786 if (s->msg_tk != NULL)
788 GNUNET_SERVER_mst_destroy(s->msg_tk);
792 notify_session_end(s->plugin, &s->target, s);
797 server_disconnect (struct Session *s)
799 struct Plugin *plugin = s->plugin;
800 struct Session *t = plugin->head;
804 if (t->inbound == GNUNET_YES)
806 if (t->server_send != NULL)
808 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
810 if (t->server_send != NULL)
812 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
823 server_send (struct Session *s, struct HTTP_Message * msg)
825 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
826 server_reschedule (s->plugin, GNUNET_YES);
833 * Call MHD IPv4 to process pending requests and then go back
834 * and schedule the next run.
835 * @param cls plugin as closure
836 * @param tc task context
839 server_v4_run (void *cls,
840 const struct GNUNET_SCHEDULER_TaskContext *tc)
842 struct Plugin *plugin = cls;
843 GNUNET_assert (cls != NULL);
845 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
847 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
850 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
851 if (plugin->server_v4 != NULL)
852 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, GNUNET_NO);
857 * Call MHD IPv6 to process pending requests and then go back
858 * and schedule the next run.
859 * @param cls plugin as closure
860 * @param tc task context
863 server_v6_run (void *cls,
864 const struct GNUNET_SCHEDULER_TaskContext *tc)
866 struct Plugin *plugin = cls;
867 GNUNET_assert (cls != NULL);
869 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
871 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
874 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
875 if (plugin->server_v6 != NULL)
876 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, GNUNET_NO);
880 * Function that queries MHD's select sets and
881 * starts the task waiting for them.
882 * @param plugin plugin
883 * @param daemon_handle the MHD daemon handle
884 * @return gnunet task identifier
886 static GNUNET_SCHEDULER_TaskIdentifier
887 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle, int now)
889 GNUNET_SCHEDULER_TaskIdentifier ret;
893 struct GNUNET_NETWORK_FDSet *wrs;
894 struct GNUNET_NETWORK_FDSet *wws;
895 struct GNUNET_NETWORK_FDSet *wes;
897 unsigned long long timeout;
898 static unsigned long long last_timeout = 0;
901 struct GNUNET_TIME_Relative tv;
903 ret = GNUNET_SCHEDULER_NO_TASK;
907 wrs = GNUNET_NETWORK_fdset_create ();
908 wes = GNUNET_NETWORK_fdset_create ();
909 wws = GNUNET_NETWORK_fdset_create ();
911 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
912 haveto = MHD_get_timeout (daemon_handle, &timeout);
913 if (haveto == MHD_YES)
915 if (timeout != last_timeout)
918 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
919 "SELECT Timeout changed from %llu to %llu\n",
920 last_timeout, timeout);
922 last_timeout = timeout;
924 tv.rel_value = (uint64_t) timeout;
927 tv = GNUNET_TIME_UNIT_SECONDS;
928 /* Force immediate run, since we have outbound data to send */
929 if (now == GNUNET_YES)
930 tv = GNUNET_TIME_UNIT_MILLISECONDS;
931 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
932 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
933 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
934 if (daemon_handle == plugin->server_v4)
936 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
938 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
939 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
943 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
944 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
945 &server_v4_run, plugin);
947 if (daemon_handle == plugin->server_v6)
949 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
951 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
952 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
956 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
957 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
958 &server_v6_run, plugin);
960 GNUNET_NETWORK_fdset_destroy (wrs);
961 GNUNET_NETWORK_fdset_destroy (wws);
962 GNUNET_NETWORK_fdset_destroy (wes);
967 server_start (struct Plugin *plugin)
970 unsigned int timeout;
973 res = server_load_certificate (plugin);
974 if (res == GNUNET_SYSERR)
976 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
977 "Could not load or create server certificate! Loading plugin failed!\n");
983 #if MHD_VERSION >= 0x00090E00
984 timeout = GNUNET_CONSTANTS_DISCONNECT_SESSION_TIMEOUT.rel_value / 1000;
985 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
986 "MHD can set timeout per connection! Default time out %u sec.\n", timeout);
988 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
989 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
990 "MHD cannot set timeout per connection! Default time out %u sec.\n", timeout);
992 plugin->server_v4 = NULL;
993 if (plugin->ipv4 == GNUNET_YES)
995 plugin->server_v4 = MHD_start_daemon (
1002 MHD_NO_FLAG, plugin->port,
1003 &server_accept_cb, plugin,
1004 &server_access_cb, plugin,
1005 MHD_OPTION_SOCK_ADDR,
1006 (struct sockaddr_in *)
1007 plugin->server_addr_v4,
1008 MHD_OPTION_CONNECTION_LIMIT,
1010 plugin->max_connections,
1012 MHD_OPTION_HTTPS_PRIORITIES,
1013 plugin->crypto_init,
1014 MHD_OPTION_HTTPS_MEM_KEY,
1016 MHD_OPTION_HTTPS_MEM_CERT,
1019 MHD_OPTION_CONNECTION_TIMEOUT,
1021 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1023 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1024 MHD_OPTION_NOTIFY_COMPLETED,
1025 &server_disconnect_cb, plugin,
1026 MHD_OPTION_EXTERNAL_LOGGER,
1027 server_log, NULL, MHD_OPTION_END);
1029 plugin->server_v6 = NULL;
1030 if (plugin->ipv6 == GNUNET_YES)
1032 plugin->server_v6 = MHD_start_daemon (
1039 MHD_USE_IPv6, plugin->port,
1040 &server_accept_cb, plugin,
1041 &server_access_cb, plugin,
1042 MHD_OPTION_SOCK_ADDR,
1043 (struct sockaddr_in6 *)
1044 plugin->server_addr_v6,
1045 MHD_OPTION_CONNECTION_LIMIT,
1047 plugin->max_connections,
1049 MHD_OPTION_HTTPS_PRIORITIES,
1050 plugin->crypto_init,
1051 MHD_OPTION_HTTPS_MEM_KEY,
1053 MHD_OPTION_HTTPS_MEM_CERT,
1056 MHD_OPTION_CONNECTION_TIMEOUT,
1058 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1060 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1061 MHD_OPTION_NOTIFY_COMPLETED,
1062 &server_disconnect_cb, plugin,
1063 MHD_OPTION_EXTERNAL_LOGGER,
1064 server_log, NULL, MHD_OPTION_END);
1068 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1070 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1071 "Failed to start %s IPv4 server component on port %u\n", plugin->name,
1073 return GNUNET_SYSERR;
1075 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1077 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1078 "Failed to start %s IPv6 server component on port %u\n", plugin->name,
1080 return GNUNET_SYSERR;
1083 server_reschedule (plugin, GNUNET_NO);
1086 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1087 "%s server component started on port %u\n", plugin->name,
1094 server_stop (struct Plugin *plugin)
1096 struct Session *s = NULL;
1097 struct Session *t = NULL;
1099 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1100 plugin->server_v4 = NULL;
1101 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1102 plugin->server_v6 = NULL;
1104 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1106 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1107 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1110 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1112 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1113 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1116 if (server_v6_tmp != NULL)
1118 MHD_stop_daemon (server_v4_tmp);
1120 if (server_v6_tmp != NULL)
1122 MHD_stop_daemon (server_v6_tmp);
1125 /* cleaning up semi-sessions never propagated */
1126 s = plugin->server_semi_head;
1135 GNUNET_free_non_null (plugin->crypto_init);
1136 GNUNET_free_non_null (plugin->cert);
1137 GNUNET_free_non_null (plugin->key);
1141 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1142 "%s server component stopped\n", plugin->name);
1148 /* end of plugin_transport_http.c */