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);
167 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
168 "No usable TLS certificate found, creating certificate\n");
172 GNUNET_OS_start_process (GNUNET_NO, NULL, NULL,
173 "gnunet-transport-certificate-creation",
174 "gnunet-transport-certificate-creation",
175 key_file, cert_file, NULL);
176 if (cert_creation == NULL)
178 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
180 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
181 GNUNET_free (key_file);
182 GNUNET_free (cert_file);
184 GNUNET_free_non_null (plugin->key);
186 GNUNET_free_non_null (plugin->cert);
188 GNUNET_free_non_null (plugin->crypto_init);
189 plugin->crypto_init = NULL;
191 return GNUNET_SYSERR;
193 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
194 GNUNET_OS_process_destroy (cert_creation);
196 plugin->key = server_load_file (key_file);
197 plugin->cert = server_load_file (cert_file);
200 if ((plugin->key == NULL) || (plugin->cert == NULL))
202 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
204 ("No usable TLS certificate found and creating one failed!\n"),
206 GNUNET_free (key_file);
207 GNUNET_free (cert_file);
209 GNUNET_free_non_null (plugin->key);
211 GNUNET_free_non_null (plugin->cert);
213 GNUNET_free_non_null (plugin->crypto_init);
214 plugin->crypto_init = NULL;
216 return GNUNET_SYSERR;
218 GNUNET_free (key_file);
219 GNUNET_free (cert_file);
220 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
227 * Reschedule the execution of both IPv4 and IPv6 server
228 * @param plugin the plugin
229 * @param server which server to schedule v4 or v6?
230 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
235 server_reschedule (struct Plugin *plugin, struct MHD_Daemon *server, int now)
237 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
239 if (GNUNET_YES == plugin->server_v4_immediately)
240 return; /* No rescheduling, server will run asap */
242 if (GNUNET_YES == now)
243 plugin->server_v4_immediately = GNUNET_YES;
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 ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
255 if (GNUNET_YES == plugin->server_v6_immediately)
256 return; /* No rescheduling, server will run asap */
258 if (GNUNET_YES == now)
259 plugin->server_v6_immediately = GNUNET_YES;
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 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
353 "Server: %X: sent %u bytes\n", s, bytes_read);
359 static struct Session *
360 server_lookup_session (struct Plugin *plugin,
361 struct ServerConnection * sc)
365 for (s = plugin->head; NULL != s; s = s->next)
366 if ((s->server_recv == sc) || (s->server_send == sc))
368 for (s = plugin->server_semi_head; NULL != s; s = s->next)
369 if ((s->server_recv == sc) || (s->server_send == sc))
375 static struct ServerConnection *
376 server_lookup_serverconnection (struct Plugin *plugin,
377 struct MHD_Connection *mhd_connection, const char *url,
380 struct Session *s = NULL;
382 struct ServerConnection *sc = NULL;
383 const union MHD_ConnectionInfo *conn_info;
384 struct GNUNET_ATS_Information ats;
385 struct IPv4HttpAddress a4;
386 struct IPv6HttpAddress a6;
387 struct sockaddr_in *s4;
388 struct sockaddr_in6 *s6;
391 struct GNUNET_PeerIdentity target;
392 int check = GNUNET_NO;
394 int direction = GNUNET_SYSERR;
396 conn_info = MHD_get_connection_info (mhd_connection,
397 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
398 if ((conn_info->client_addr->sa_family != AF_INET) &&
399 (conn_info->client_addr->sa_family != AF_INET6))
402 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
405 char *tagc = (char *) &url[105];
407 memcpy (&hash, &url[1], 103);
410 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
411 &(target.hashPubKey)))
413 tag = strtoul (tagc, NULL, 10);
419 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
420 direction = _RECEIVE;
421 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
430 if (check == GNUNET_NO)
433 plugin->cur_connections++;
434 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
435 "Server: New %s connection from %s with tag %u\n",
437 GNUNET_i2s (&target), tag);
439 /* find duplicate session */
444 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
446 /* FIXME add source address comparison */
453 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
454 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
455 GNUNET_i2s (&target));
459 /* find semi-session */
460 t = plugin->server_semi_head;
464 /* FIXME add source address comparison */
465 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
475 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
476 "Server: Found existing semi-session for `%s'\n",
477 GNUNET_i2s (&target));
479 if ((direction == _SEND) && (t->server_send != NULL))
481 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
482 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
483 GNUNET_i2s (&target));
489 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
490 plugin->server_semi_tail, s);
491 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
492 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
493 "Server: Found matching semi-session, merging session for peer `%s'\n",
494 GNUNET_i2s (&target));
496 plugin->inbound_sessions ++;
497 GNUNET_STATISTICS_set (plugin->env->stats,
498 "# HTTP inbound sessions",
499 plugin->inbound_sessions,
501 GNUNET_assert (NULL != s);
504 if ((direction == _RECEIVE) && (t->server_recv != NULL))
506 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
507 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
508 GNUNET_i2s (&target));
514 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
515 plugin->server_semi_tail, s);
516 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
517 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
518 "Server: Found matching semi-session, merging session for peer `%s'\n",
519 GNUNET_i2s (&target));
520 plugin->inbound_sessions ++;
521 GNUNET_STATISTICS_set (plugin->env->stats,
522 "# HTTP inbound sessions",
523 plugin->inbound_sessions,
525 GNUNET_assert (NULL != s);
530 /* create new session */
531 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
532 "Server: Creating new session for peer `%s' \n",
533 GNUNET_i2s (&target));
534 switch (conn_info->client_addr->sa_family)
537 s4 = ((struct sockaddr_in *) conn_info->client_addr);
538 a4.u4_port = s4->sin_port;
539 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
541 a_len = sizeof (struct IPv4HttpAddress);
542 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
545 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
546 a6.u6_port = s6->sin6_port;
547 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
549 a_len = sizeof (struct IPv6HttpAddress);
550 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
556 s = create_session (plugin, &target, a, a_len);
557 GNUNET_assert (NULL != s);
558 s->ats_address_network_type = ats.value;
559 s->inbound = GNUNET_YES;
560 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
562 s->server_recv = NULL;
563 s->server_send = NULL;
565 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
566 plugin->server_semi_tail, s);
570 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
571 "Server: Invalid connection request\n");
575 sc = GNUNET_malloc (sizeof (struct ServerConnection));
576 sc->mhd_conn = mhd_connection;
577 sc->direction = direction;
579 if (direction == _SEND)
581 if (direction == _RECEIVE)
584 #if MHD_VERSION >= 0x00090E00
585 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
587 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
588 "Server: Setting timeout for %X to %u sec.\n", sc, to);
589 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
591 struct MHD_Daemon *d = NULL;
593 if (s->addrlen == sizeof (struct IPv6HttpAddress))
594 d = plugin->server_v6;
595 if (s->addrlen == sizeof (struct IPv4HttpAddress))
596 d = plugin->server_v4;
598 server_reschedule (plugin, d, GNUNET_NO);
604 * Process GET or PUT request received via MHD. For
605 * GET, queue response that will send back our pending
606 * messages. For PUT, process incoming data and send
607 * to GNUnet core. In either case, check if a session
608 * already exists and create a new one if not.
611 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
612 const char *url, const char *method, const char *version,
613 const char *upload_data, size_t * upload_data_size,
614 void **httpSessionCache)
616 struct Plugin *plugin = cls;
617 struct ServerConnection *sc = *httpSessionCache;
619 struct MHD_Response *response;
622 GNUNET_assert (cls != NULL);
626 sc = server_lookup_serverconnection (plugin, mhd_connection, url, method);
628 (*httpSessionCache) = sc;
632 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
633 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
634 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
635 MHD_destroy_response (response);
641 /* 'old' connection */
642 if (NULL == server_lookup_session (plugin, sc))
644 /* Session was already disconnected */
649 /* existing connection */
650 sc = (*httpSessionCache);
653 GNUNET_assert (NULL != s);
655 /* connection is to be disconnected */
656 if (sc->disconnect == GNUNET_YES)
658 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
660 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
662 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
663 MHD_destroy_response (response);
667 GNUNET_assert (s != NULL);
668 /* Check if both directions are connected */
669 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
671 /* Delayed read from since not both semi-connections are connected */
675 if (sc->direction == _SEND)
678 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
680 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
681 MHD_destroy_response (response);
684 if (sc->direction == _RECEIVE)
686 if (*upload_data_size == 0)
688 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
689 "Server: Peer `%s' PUT on address `%s' connected\n",
690 GNUNET_i2s (&s->target),
691 http_plugin_address_to_string (NULL, s->addr,
697 if ((*upload_data_size > 0))
699 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
700 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
701 GNUNET_i2s (&s->target),
702 http_plugin_address_to_string (NULL, s->addr,
705 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
707 if ((s->next_receive.abs_value <= now.abs_value))
709 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
710 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
712 if (s->msg_tk == NULL)
714 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
716 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
717 *upload_data_size, GNUNET_NO, GNUNET_NO);
719 #if MHD_VERSION >= 0x00090E00
720 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
721 struct ServerConnection *t = NULL;
723 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
724 "Server: Received %u bytes\n", *upload_data_size);
725 /* Setting timeouts for other connections */
726 if (s->server_recv != NULL)
729 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
730 "Server: Setting timeout for %X to %u sec.\n", t,
732 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
735 if (s->server_send != NULL)
738 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
739 "Server: Setting timeout for %X to %u sec.\n", t,
741 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
744 struct MHD_Daemon *d = NULL;
746 if (s->addrlen == sizeof (struct IPv6HttpAddress))
747 d = plugin->server_v6;
748 if (s->addrlen == sizeof (struct IPv4HttpAddress))
749 d = plugin->server_v4;
750 server_reschedule (plugin, d, GNUNET_NO);
752 (*upload_data_size) = 0;
756 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
757 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
758 s, now.abs_value - s->next_receive.abs_value);
769 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
770 void **httpSessionCache)
772 struct ServerConnection *sc = *httpSessionCache;
773 struct ServerConnection *tc = NULL;
774 struct Session *s = NULL;
775 struct Session *t = NULL;
776 struct Plugin *plugin = NULL;
781 if (NULL == (s = server_lookup_session (p, sc)))
785 GNUNET_assert (NULL != s);
786 GNUNET_assert (NULL != p);
787 if (GNUNET_NO == exist_session(p, s))
791 if (sc->direction == _SEND)
794 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
795 "Server: %X peer `%s' GET on address `%s' disconnected\n",
796 s->server_send, GNUNET_i2s (&s->target),
797 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
798 s->server_send = NULL;
799 if (NULL != (tc = s->server_recv))
801 tc->disconnect = GNUNET_YES;
802 GNUNET_assert (NULL != tc->mhd_conn);
803 #if MHD_VERSION >= 0x00090E00
804 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
809 if (sc->direction == _RECEIVE)
811 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
812 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
813 s->server_recv, GNUNET_i2s (&s->target),
814 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
815 s->server_recv = NULL;
816 if (NULL != (tc = s->server_send))
818 tc->disconnect = GNUNET_YES;
819 GNUNET_assert (NULL != tc->mhd_conn);
820 #if MHD_VERSION >= 0x00090E00
821 MHD_set_connection_option (tc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
825 if (s->msg_tk != NULL)
827 GNUNET_SERVER_mst_destroy (s->msg_tk);
834 t = plugin->server_semi_head;
839 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
840 plugin->server_semi_tail, s);
841 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
846 plugin->cur_connections--;
848 struct MHD_Daemon *d = NULL;
850 if (s->addrlen == sizeof (struct IPv6HttpAddress))
851 d = plugin->server_v6;
852 if (s->addrlen == sizeof (struct IPv4HttpAddress))
853 d = plugin->server_v4;
854 server_reschedule (plugin, d, GNUNET_NO);
856 if ((s->server_send == NULL) && (s->server_recv == NULL))
858 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
859 "Server: peer `%s' on address `%s' disconnected\n",
860 GNUNET_i2s (&s->target),
861 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
862 if (s->msg_tk != NULL)
864 GNUNET_SERVER_mst_destroy (s->msg_tk);
868 GNUNET_assert (plugin->inbound_sessions > 0);
869 plugin->inbound_sessions --;
870 GNUNET_STATISTICS_set (plugin->env->stats,
871 "# HTTP inbound sessions",
872 plugin->inbound_sessions, GNUNET_NO);
874 notify_session_end (s->plugin, &s->target, s);
879 server_disconnect (struct Session *s)
881 if (s->server_send != NULL)
883 ((struct ServerConnection *) s->server_send)->disconnect = GNUNET_YES;
885 if (s->server_recv != NULL)
887 ((struct ServerConnection *) s->server_recv)->disconnect = GNUNET_YES;
894 server_send (struct Session *s, struct HTTP_Message *msg)
896 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
898 if (s->addrlen == sizeof (struct IPv4HttpAddress))
900 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
902 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
904 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
907 return GNUNET_SYSERR;
914 * Call MHD IPv4 to process pending requests and then go back
915 * and schedule the next run.
916 * @param cls plugin as closure
917 * @param tc task context
920 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
922 struct Plugin *plugin = cls;
924 GNUNET_assert (cls != NULL);
926 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
927 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
930 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
931 "Running IPv4 server\n");
933 plugin->server_v4_immediately = GNUNET_NO;
934 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
935 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
940 * Call MHD IPv6 to process pending requests and then go back
941 * and schedule the next run.
942 * @param cls plugin as closure
943 * @param tc task context
946 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
948 struct Plugin *plugin = cls;
950 GNUNET_assert (cls != NULL);
951 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
952 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
955 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
956 "Running IPv6 server\n");
958 plugin->server_v6_immediately = GNUNET_NO;
959 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
960 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
964 * Function that queries MHD's select sets and
965 * starts the task waiting for them.
966 * @param plugin plugin
967 * @param daemon_handle the MHD daemon handle
968 * @return gnunet task identifier
970 static GNUNET_SCHEDULER_TaskIdentifier
971 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
974 GNUNET_SCHEDULER_TaskIdentifier ret;
978 struct GNUNET_NETWORK_FDSet *wrs;
979 struct GNUNET_NETWORK_FDSet *wws;
980 struct GNUNET_NETWORK_FDSet *wes;
982 unsigned MHD_LONG_LONG timeout;
983 static unsigned long long last_timeout = 0;
986 struct GNUNET_TIME_Relative tv;
988 ret = GNUNET_SCHEDULER_NO_TASK;
992 wrs = GNUNET_NETWORK_fdset_create ();
993 wes = GNUNET_NETWORK_fdset_create ();
994 wws = GNUNET_NETWORK_fdset_create ();
996 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
997 haveto = MHD_get_timeout (daemon_handle, &timeout);
998 if (haveto == MHD_YES)
1000 if (timeout != last_timeout)
1003 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1004 "SELECT Timeout changed from %llu to %llu\n",
1005 last_timeout, timeout);
1007 last_timeout = timeout;
1009 tv.rel_value = (uint64_t) timeout;
1012 tv = GNUNET_TIME_UNIT_SECONDS;
1013 /* Force immediate run, since we have outbound data to send */
1014 if (now == GNUNET_YES)
1015 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1016 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1017 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1018 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1020 if (daemon_handle == plugin->server_v4)
1022 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1024 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1025 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1028 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1029 "Scheduling IPv4 server task in %llu ms\n", tv);
1032 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1034 &server_v4_run, plugin);
1036 if (daemon_handle == plugin->server_v6)
1038 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1040 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1041 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1044 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1045 "Scheduling IPv6 server task in %llu ms\n", tv);
1048 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1050 &server_v6_run, plugin);
1052 GNUNET_NETWORK_fdset_destroy (wrs);
1053 GNUNET_NETWORK_fdset_destroy (wws);
1054 GNUNET_NETWORK_fdset_destroy (wes);
1059 server_start (struct Plugin *plugin)
1061 int res = GNUNET_OK;
1062 unsigned int timeout;
1064 GNUNET_assert (NULL != plugin);
1067 res = server_load_certificate (plugin);
1068 if (res == GNUNET_SYSERR)
1070 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1071 "Could not load or create server certificate! Loading plugin failed!\n");
1077 #if MHD_VERSION >= 0x00090E00
1078 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1079 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1080 "MHD can set timeout per connection! Default time out %u sec.\n",
1083 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1084 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1085 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1088 plugin->server_v4 = NULL;
1089 if (plugin->ipv4 == GNUNET_YES)
1091 plugin->server_v4 = MHD_start_daemon (
1098 MHD_NO_FLAG, plugin->port,
1099 &server_accept_cb, plugin,
1100 &server_access_cb, plugin,
1101 MHD_OPTION_SOCK_ADDR,
1102 (struct sockaddr_in *)
1103 plugin->server_addr_v4,
1104 MHD_OPTION_CONNECTION_LIMIT,
1106 plugin->max_connections,
1108 MHD_OPTION_HTTPS_PRIORITIES,
1109 plugin->crypto_init,
1110 MHD_OPTION_HTTPS_MEM_KEY,
1112 MHD_OPTION_HTTPS_MEM_CERT,
1115 MHD_OPTION_CONNECTION_TIMEOUT,
1117 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1119 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1120 MHD_OPTION_NOTIFY_COMPLETED,
1121 &server_disconnect_cb, plugin,
1122 MHD_OPTION_EXTERNAL_LOGGER,
1123 server_log, NULL, MHD_OPTION_END);
1125 plugin->server_v6 = NULL;
1126 if (plugin->ipv6 == GNUNET_YES)
1128 plugin->server_v6 = MHD_start_daemon (
1135 MHD_USE_IPv6, plugin->port,
1136 &server_accept_cb, plugin,
1137 &server_access_cb, plugin,
1138 MHD_OPTION_SOCK_ADDR,
1139 (struct sockaddr_in6 *)
1140 plugin->server_addr_v6,
1141 MHD_OPTION_CONNECTION_LIMIT,
1143 plugin->max_connections,
1145 MHD_OPTION_HTTPS_PRIORITIES,
1146 plugin->crypto_init,
1147 MHD_OPTION_HTTPS_MEM_KEY,
1149 MHD_OPTION_HTTPS_MEM_CERT,
1152 MHD_OPTION_CONNECTION_TIMEOUT,
1154 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1156 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1157 MHD_OPTION_NOTIFY_COMPLETED,
1158 &server_disconnect_cb, plugin,
1159 MHD_OPTION_EXTERNAL_LOGGER,
1160 server_log, NULL, MHD_OPTION_END);
1164 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1166 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1167 "Failed to start %s IPv4 server component on port %u\n",
1168 plugin->name, plugin->port);
1169 return GNUNET_SYSERR;
1171 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1173 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1175 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1176 "Failed to start %s IPv6 server component on port %u\n",
1177 plugin->name, plugin->port);
1178 return GNUNET_SYSERR;
1180 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1181 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1182 "%s server component started on port %u\n", plugin->name,
1188 server_stop (struct Plugin *plugin)
1190 struct Session *s = NULL;
1191 struct Session *t = NULL;
1193 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1195 plugin->server_v4 = NULL;
1196 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1198 plugin->server_v6 = NULL;
1200 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1202 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1203 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1206 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1208 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1209 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1212 if (server_v6_tmp != NULL)
1214 MHD_stop_daemon (server_v4_tmp);
1216 if (server_v6_tmp != NULL)
1218 MHD_stop_daemon (server_v6_tmp);
1221 /* cleaning up semi-sessions never propagated */
1222 s = plugin->server_semi_head;
1226 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1227 "Deleting semi-sessions %p\n", s);
1230 struct HTTP_Message *msg = s->msg_head;
1231 struct HTTP_Message *tmp = NULL;
1237 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1238 if (msg->transmit_cont != NULL)
1240 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1253 GNUNET_free_non_null (plugin->crypto_init);
1254 GNUNET_free_non_null (plugin->cert);
1255 GNUNET_free_non_null (plugin->key);
1258 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1259 "%s server component stopped\n", plugin->name);
1264 /* end of plugin_transport_http.c */