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;
35 struct ServerConnection
40 /* should this connection get disconnected? GNUNET_YES/NO */
43 struct Session *session;
44 struct MHD_Connection *mhd_conn;
48 * Function that queries MHD's select sets and
49 * starts the task waiting for them.
50 * @param plugin plugin
51 * @param daemon_handle the MHD daemon handle
52 * @param now schedule now or with MHD delay
53 * @return gnunet task identifier
55 static GNUNET_SCHEDULER_TaskIdentifier
56 server_schedule (struct Plugin *plugin,
57 struct MHD_Daemon *daemon_handle,
61 server_log (void *arg, const char *fmt, va_list ap)
65 vsnprintf (text, sizeof (text), fmt, ap);
67 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
71 * Check if incoming connection is accepted.
72 * NOTE: Here every connection is accepted
73 * @param cls plugin as closure
74 * @param addr address of incoming connection
75 * @param addr_len address length of incoming connection
76 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
80 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
82 struct Plugin *plugin = cls;
84 if (plugin->cur_connections <= plugin->max_connections)
88 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
89 "Server: Cannot accept new connections\n");
97 server_load_file (const char *file)
99 struct GNUNET_DISK_FileHandle *gn_file;
103 if (GNUNET_OK != GNUNET_DISK_file_size (file,
104 &fsize, GNUNET_NO, GNUNET_YES))
106 text = GNUNET_malloc (fsize + 1);
108 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
109 GNUNET_DISK_PERM_USER_READ);
115 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
118 GNUNET_DISK_file_close (gn_file);
122 GNUNET_DISK_file_close (gn_file);
131 server_load_certificate (struct Plugin *plugin)
138 /* Get crypto init string from config
139 * If not present just use default values */
141 GNUNET_assert (GNUNET_OK ==
142 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
145 &plugin->crypto_init));
148 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
149 "KEY_FILE", &key_file))
151 key_file = GNUNET_strdup ("https_key.key");
155 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
156 "CERT_FILE", &cert_file))
158 GNUNET_asprintf (&cert_file, "%s", "https_cert.crt");
161 /* read key & certificates from file */
162 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
163 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
164 key_file, cert_file);
166 plugin->key = server_load_file (key_file);
167 plugin->cert = server_load_file (cert_file);
169 if ((plugin->key == NULL) || (plugin->cert == NULL))
171 struct GNUNET_OS_Process *cert_creation;
173 GNUNET_free_non_null (plugin->key);
175 GNUNET_free_non_null (plugin->cert);
179 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
180 "No usable TLS certificate found, creating certificate\n");
184 GNUNET_OS_start_process (GNUNET_NO, NULL, NULL,
185 "gnunet-transport-certificate-creation",
186 "gnunet-transport-certificate-creation",
187 key_file, cert_file, NULL);
188 if (cert_creation == NULL)
190 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
192 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
193 GNUNET_free (key_file);
194 GNUNET_free (cert_file);
196 GNUNET_free_non_null (plugin->key);
198 GNUNET_free_non_null (plugin->cert);
200 GNUNET_free_non_null (plugin->crypto_init);
201 plugin->crypto_init = NULL;
203 return GNUNET_SYSERR;
205 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
206 GNUNET_OS_process_destroy (cert_creation);
208 plugin->key = server_load_file (key_file);
209 plugin->cert = server_load_file (cert_file);
212 if ((plugin->key == NULL) || (plugin->cert == NULL))
214 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
216 ("No usable TLS certificate found and creating one failed!\n"),
218 GNUNET_free (key_file);
219 GNUNET_free (cert_file);
221 GNUNET_free_non_null (plugin->key);
223 GNUNET_free_non_null (plugin->cert);
225 GNUNET_free_non_null (plugin->crypto_init);
226 plugin->crypto_init = NULL;
228 return GNUNET_SYSERR;
230 GNUNET_free (key_file);
231 GNUNET_free (cert_file);
232 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 server which server to schedule v4 or v6?
242 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
247 server_reschedule (struct Plugin *plugin, struct MHD_Daemon *server, int now)
249 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
251 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
253 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
254 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
256 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
259 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
261 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
263 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
264 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
266 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
271 * Callback called by MessageStreamTokenizer when a message has arrived
272 * @param cls current session as closure
273 * @param client clien
274 * @param message the message to be forwarded to transport service
277 server_receive_mst_cb (void *cls, void *client,
278 const struct GNUNET_MessageHeader *message)
280 struct Session *s = cls;
282 GNUNET_assert (NULL != p);
283 if (GNUNET_NO == exist_session(p, s))
286 struct Plugin *plugin = s->plugin;
287 struct GNUNET_TIME_Relative delay;
289 delay = http_plugin_receive (s, &s->target, message, s, s->addr, s->addrlen);
292 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
294 if (delay.rel_value > 0)
296 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
297 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
298 GNUNET_i2s (&s->target),
299 http_plugin_address_to_string (NULL, s->addr, s->addrlen),
306 * Callback called by MHD when it needs data to send
307 * @param cls current session
308 * @param pos position in buffer
309 * @param buf the buffer to write data to
310 * @param max max number of bytes available in buffer
311 * @return bytes written to buffer
314 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
316 struct Session *s = cls;
317 GNUNET_assert (NULL != p);
318 if (GNUNET_NO == exist_session(p, s))
321 struct HTTP_Message *msg;
329 if ((msg->size - msg->pos) <= max)
331 memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
332 bytes_read = msg->size - msg->pos;
333 msg->pos += (msg->size - msg->pos);
337 memcpy (buf, &msg->buf[msg->pos], max);
342 /* removing message */
343 if (msg->pos == msg->size)
345 if (NULL != msg->transmit_cont)
346 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
347 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
352 struct Plugin *plugin = s->plugin;
353 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
354 "Server: %X: sent %u bytes\n", s, bytes_read);
359 static struct ServerConnection *
360 server_lookup_session (struct Plugin *plugin,
361 struct MHD_Connection *mhd_connection, const char *url,
364 struct Session *s = NULL;
366 struct ServerConnection *sc = NULL;
367 const union MHD_ConnectionInfo *conn_info;
368 struct GNUNET_ATS_Information ats;
369 struct IPv4HttpAddress a4;
370 struct IPv6HttpAddress a6;
371 struct sockaddr_in *s4;
372 struct sockaddr_in6 *s6;
375 struct GNUNET_PeerIdentity target;
376 int check = GNUNET_NO;
378 int direction = GNUNET_SYSERR;
380 conn_info = MHD_get_connection_info (mhd_connection,
381 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
382 if ((conn_info->client_addr->sa_family != AF_INET) &&
383 (conn_info->client_addr->sa_family != AF_INET6))
386 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
389 char *tagc = (char *) &url[105];
391 memcpy (&hash, &url[1], 103);
394 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
395 &(target.hashPubKey)))
397 tag = strtoul (tagc, NULL, 10);
403 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
404 direction = _RECEIVE;
405 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
414 if (check == GNUNET_NO)
417 plugin->cur_connections++;
418 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
419 "Server: New %s connection from %s with tag %u\n",
421 GNUNET_i2s (&target), tag);
423 /* find duplicate session */
428 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
430 /* FIXME add source address comparison */
437 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
438 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
439 GNUNET_i2s (&target));
443 /* find semi-session */
444 t = plugin->server_semi_head;
448 /* FIXME add source address comparison */
449 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
459 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
460 "Server: Found existing semi-session for `%s'\n",
461 GNUNET_i2s (&target));
463 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));
473 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
474 plugin->server_semi_tail, s);
475 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
476 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
477 "Server: Found matching semi-session, merging session for peer `%s'\n",
478 GNUNET_i2s (&target));
480 plugin->inbound_sessions ++;
481 GNUNET_STATISTICS_set (plugin->env->stats,
482 "# HTTP inbound sessions",
483 plugin->inbound_sessions,
485 GNUNET_assert (NULL != s);
488 if ((direction == _RECEIVE) && (t->server_recv != NULL))
490 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
491 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
492 GNUNET_i2s (&target));
498 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
499 plugin->server_semi_tail, s);
500 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));
504 plugin->inbound_sessions ++;
505 GNUNET_STATISTICS_set (plugin->env->stats,
506 "# HTTP inbound sessions",
507 plugin->inbound_sessions,
509 GNUNET_assert (NULL != s);
514 /* create new session */
515 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
516 "Server: Creating new session for peer `%s' \n",
517 GNUNET_i2s (&target));
518 switch (conn_info->client_addr->sa_family)
521 s4 = ((struct sockaddr_in *) conn_info->client_addr);
522 a4.u4_port = s4->sin_port;
523 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
525 a_len = sizeof (struct IPv4HttpAddress);
526 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
529 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
530 a6.u6_port = s6->sin6_port;
531 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
533 a_len = sizeof (struct IPv6HttpAddress);
534 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
540 s = create_session (plugin, &target, a, a_len);
541 GNUNET_assert (NULL != s);
542 s->ats_address_network_type = ats.value;
544 s->inbound = GNUNET_YES;
545 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
547 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
549 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
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 %X 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_session (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);
626 /* existing connection */
627 sc = (*httpSessionCache);
630 GNUNET_assert (NULL != s);
632 /* connection is to be disconnected */
633 if (sc->disconnect == GNUNET_YES)
635 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
637 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
639 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
640 MHD_destroy_response (response);
644 GNUNET_assert (s != NULL);
645 /* Check if both directions are connected */
646 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
648 /* Delayed read from since not both semi-connections are connected */
652 if (sc->direction == _SEND)
655 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
657 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
658 MHD_destroy_response (response);
661 if (sc->direction == _RECEIVE)
663 if (*upload_data_size == 0)
665 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
666 "Server: Peer `%s' PUT on address `%s' connected\n",
667 GNUNET_i2s (&s->target),
668 http_plugin_address_to_string (NULL, s->addr,
674 if ((*upload_data_size > 0))
676 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
677 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
678 GNUNET_i2s (&s->target),
679 http_plugin_address_to_string (NULL, s->addr,
682 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
684 if ((s->next_receive.abs_value <= now.abs_value))
686 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
687 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
689 if (s->msg_tk == NULL)
691 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
693 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
694 *upload_data_size, GNUNET_NO, GNUNET_NO);
696 #if MHD_VERSION >= 0x00090E00
697 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
698 struct ServerConnection *t = NULL;
700 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
701 "Server: Received %u bytes\n", *upload_data_size);
702 /* Setting timeouts for other connections */
703 if (s->server_recv != NULL)
706 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
707 "Server: Setting timeout for %X to %u sec.\n", t,
709 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
712 if (s->server_send != NULL)
715 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
716 "Server: Setting timeout for %X to %u sec.\n", t,
718 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
721 struct MHD_Daemon *d = NULL;
723 if (s->addrlen == sizeof (struct IPv6HttpAddress))
724 d = plugin->server_v6;
725 if (s->addrlen == sizeof (struct IPv4HttpAddress))
726 d = plugin->server_v4;
727 server_reschedule (plugin, d, GNUNET_NO);
729 (*upload_data_size) = 0;
733 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
734 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
735 s, now.abs_value - s->next_receive.abs_value);
746 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
747 void **httpSessionCache)
749 struct ServerConnection *sc = *httpSessionCache;
750 struct ServerConnection *tc = NULL;
751 struct Session *s = NULL;
752 struct Session *t = NULL;
753 struct Plugin *plugin = NULL;
759 GNUNET_assert (NULL != s);
760 GNUNET_assert (NULL != p);
761 if (GNUNET_NO == exist_session(p, s))
765 if (sc->direction == _SEND)
768 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
769 "Server: %X peer `%s' GET on address `%s' disconnected\n",
770 s->server_send, GNUNET_i2s (&s->target),
771 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
773 s->server_send = NULL;
775 if (s->server_recv != NULL)
778 tc->disconnect = GNUNET_YES;
779 #if MHD_VERSION >= 0x00090E00
780 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
785 if (sc->direction == _RECEIVE)
787 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
788 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
789 s->server_recv, GNUNET_i2s (&s->target),
790 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
791 s->server_recv = NULL;
792 if (s->server_send != NULL)
795 tc->disconnect = GNUNET_YES;
796 #if MHD_VERSION >= 0x00090E00
797 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
801 if (s->msg_tk != NULL)
803 GNUNET_SERVER_mst_destroy (s->msg_tk);
809 t = plugin->server_semi_head;
814 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
815 plugin->server_semi_tail, s);
816 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
821 plugin->cur_connections--;
823 struct MHD_Daemon *d = NULL;
825 if (s->addrlen == sizeof (struct IPv6HttpAddress))
826 d = plugin->server_v6;
827 if (s->addrlen == sizeof (struct IPv4HttpAddress))
828 d = plugin->server_v4;
829 server_reschedule (plugin, d, GNUNET_NO);
831 if ((s->server_send == NULL) && (s->server_recv == NULL))
833 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
834 "Server: peer `%s' on address `%s' disconnected\n",
835 GNUNET_i2s (&s->target),
836 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
837 if (s->msg_tk != NULL)
839 GNUNET_SERVER_mst_destroy (s->msg_tk);
843 GNUNET_assert (plugin->inbound_sessions > 0);
844 plugin->inbound_sessions --;
845 GNUNET_STATISTICS_set (plugin->env->stats,
846 "# HTTP inbound sessions",
847 plugin->inbound_sessions, GNUNET_NO);
849 notify_session_end (s->plugin, &s->target, s);
854 server_disconnect (struct Session *s)
856 struct Plugin *plugin = s->plugin;
857 struct Session *t = plugin->head;
861 if (t->inbound == GNUNET_YES)
863 if (t->server_send != NULL)
865 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
867 if (t->server_send != NULL)
869 ((struct ServerConnection *) t->server_send)->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;
912 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
915 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
916 "Running IPv4 server\n");
918 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
919 if (plugin->server_v4 != NULL)
920 plugin->server_v4_task =
921 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
926 * Call MHD IPv6 to process pending requests and then go back
927 * and schedule the next run.
928 * @param cls plugin as closure
929 * @param tc task context
932 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
934 struct Plugin *plugin = cls;
936 GNUNET_assert (cls != NULL);
938 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
940 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
943 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
944 "Running IPv6 server\n");
946 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
947 if (plugin->server_v6 != NULL)
948 plugin->server_v6_task =
949 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
953 * Function that queries MHD's select sets and
954 * starts the task waiting for them.
955 * @param plugin plugin
956 * @param daemon_handle the MHD daemon handle
957 * @return gnunet task identifier
959 static GNUNET_SCHEDULER_TaskIdentifier
960 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
963 GNUNET_SCHEDULER_TaskIdentifier ret;
967 struct GNUNET_NETWORK_FDSet *wrs;
968 struct GNUNET_NETWORK_FDSet *wws;
969 struct GNUNET_NETWORK_FDSet *wes;
971 unsigned MHD_LONG_LONG timeout;
972 static unsigned long long last_timeout = 0;
975 struct GNUNET_TIME_Relative tv;
977 ret = GNUNET_SCHEDULER_NO_TASK;
981 wrs = GNUNET_NETWORK_fdset_create ();
982 wes = GNUNET_NETWORK_fdset_create ();
983 wws = GNUNET_NETWORK_fdset_create ();
985 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
986 haveto = MHD_get_timeout (daemon_handle, &timeout);
987 if (haveto == MHD_YES)
989 if (timeout != last_timeout)
992 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
993 "SELECT Timeout changed from %llu to %llu\n",
994 last_timeout, timeout);
996 last_timeout = timeout;
998 tv.rel_value = (uint64_t) timeout;
1001 tv = GNUNET_TIME_UNIT_SECONDS;
1002 /* Force immediate run, since we have outbound data to send */
1003 if (now == GNUNET_YES)
1004 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1005 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1006 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1007 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1009 if (daemon_handle == plugin->server_v4)
1011 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1013 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1014 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1017 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1018 "Scheduling IPv4 server task in %llu ms\n", tv);
1021 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1023 &server_v4_run, plugin);
1025 if (daemon_handle == plugin->server_v6)
1027 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1029 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1030 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1033 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1034 "Scheduling IPv6 server task in %llu ms\n", tv);
1037 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1039 &server_v6_run, plugin);
1041 GNUNET_NETWORK_fdset_destroy (wrs);
1042 GNUNET_NETWORK_fdset_destroy (wws);
1043 GNUNET_NETWORK_fdset_destroy (wes);
1048 server_start (struct Plugin *plugin)
1050 int res = GNUNET_OK;
1051 unsigned int timeout;
1053 GNUNET_assert (NULL != plugin);
1056 res = server_load_certificate (plugin);
1057 if (res == GNUNET_SYSERR)
1059 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1060 "Could not load or create server certificate! Loading plugin failed!\n");
1066 #if MHD_VERSION >= 0x00090E00
1067 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1068 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1069 "MHD can set timeout per connection! Default time out %u sec.\n",
1072 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1073 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1074 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1077 plugin->server_v4 = NULL;
1078 if (plugin->ipv4 == GNUNET_YES)
1080 plugin->server_v4 = MHD_start_daemon (
1087 MHD_NO_FLAG, plugin->port,
1088 &server_accept_cb, plugin,
1089 &server_access_cb, plugin,
1090 MHD_OPTION_SOCK_ADDR,
1091 (struct sockaddr_in *)
1092 plugin->server_addr_v4,
1093 MHD_OPTION_CONNECTION_LIMIT,
1095 plugin->max_connections,
1097 MHD_OPTION_HTTPS_PRIORITIES,
1098 plugin->crypto_init,
1099 MHD_OPTION_HTTPS_MEM_KEY,
1101 MHD_OPTION_HTTPS_MEM_CERT,
1104 MHD_OPTION_CONNECTION_TIMEOUT,
1106 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1108 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1109 MHD_OPTION_NOTIFY_COMPLETED,
1110 &server_disconnect_cb, plugin,
1111 MHD_OPTION_EXTERNAL_LOGGER,
1112 server_log, NULL, MHD_OPTION_END);
1114 plugin->server_v6 = NULL;
1115 if (plugin->ipv6 == GNUNET_YES)
1117 plugin->server_v6 = MHD_start_daemon (
1124 MHD_USE_IPv6, plugin->port,
1125 &server_accept_cb, plugin,
1126 &server_access_cb, plugin,
1127 MHD_OPTION_SOCK_ADDR,
1128 (struct sockaddr_in6 *)
1129 plugin->server_addr_v6,
1130 MHD_OPTION_CONNECTION_LIMIT,
1132 plugin->max_connections,
1134 MHD_OPTION_HTTPS_PRIORITIES,
1135 plugin->crypto_init,
1136 MHD_OPTION_HTTPS_MEM_KEY,
1138 MHD_OPTION_HTTPS_MEM_CERT,
1141 MHD_OPTION_CONNECTION_TIMEOUT,
1143 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1145 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1146 MHD_OPTION_NOTIFY_COMPLETED,
1147 &server_disconnect_cb, plugin,
1148 MHD_OPTION_EXTERNAL_LOGGER,
1149 server_log, NULL, MHD_OPTION_END);
1153 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1155 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1156 "Failed to start %s IPv4 server component on port %u\n",
1157 plugin->name, plugin->port);
1158 return GNUNET_SYSERR;
1160 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1162 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1164 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1165 "Failed to start %s IPv6 server component on port %u\n",
1166 plugin->name, plugin->port);
1167 return GNUNET_SYSERR;
1169 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1170 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1171 "%s server component started on port %u\n", plugin->name,
1177 server_stop (struct Plugin *plugin)
1179 struct Session *s = NULL;
1180 struct Session *t = NULL;
1184 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1186 plugin->server_v4 = NULL;
1187 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1189 plugin->server_v6 = NULL;
1191 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1193 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1194 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1197 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1199 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1200 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1203 if (server_v6_tmp != NULL)
1205 MHD_stop_daemon (server_v4_tmp);
1207 if (server_v6_tmp != NULL)
1209 MHD_stop_daemon (server_v6_tmp);
1212 /* cleaning up semi-sessions never propagated */
1213 s = plugin->server_semi_head;
1217 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1218 "Deleting semi-sessions %p\n", s);
1221 struct HTTP_Message *msg = s->msg_head;
1222 struct HTTP_Message *tmp = NULL;
1228 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1229 if (msg->transmit_cont != NULL)
1231 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1242 GNUNET_free_non_null (plugin->crypto_init);
1243 GNUNET_free_non_null (plugin->cert);
1244 GNUNET_free_non_null (plugin->key);
1247 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1248 "%s server component stopped\n", plugin->name);
1253 /* end of plugin_transport_http.c */