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 (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
241 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
242 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
244 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
247 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
249 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
251 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
252 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
254 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
259 * Callback called by MessageStreamTokenizer when a message has arrived
260 * @param cls current session as closure
261 * @param client clien
262 * @param message the message to be forwarded to transport service
265 server_receive_mst_cb (void *cls, void *client,
266 const struct GNUNET_MessageHeader *message)
268 struct Session *s = cls;
270 GNUNET_assert (NULL != p);
271 if (GNUNET_NO == exist_session(p, s))
274 struct Plugin *plugin = s->plugin;
275 struct GNUNET_TIME_Relative delay;
277 delay = http_plugin_receive (s, &s->target, message, s, s->addr, s->addrlen);
280 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
282 if (delay.rel_value > 0)
284 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
285 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
286 GNUNET_i2s (&s->target),
287 http_plugin_address_to_string (NULL, s->addr, s->addrlen),
294 * Callback called by MHD when it needs data to send
295 * @param cls current session
296 * @param pos position in buffer
297 * @param buf the buffer to write data to
298 * @param max max number of bytes available in buffer
299 * @return bytes written to buffer
302 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
304 struct Session *s = cls;
305 GNUNET_assert (NULL != p);
306 if (GNUNET_NO == exist_session(p, s))
309 struct HTTP_Message *msg;
317 if ((msg->size - msg->pos) <= max)
319 memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
320 bytes_read = msg->size - msg->pos;
321 msg->pos += (msg->size - msg->pos);
325 memcpy (buf, &msg->buf[msg->pos], max);
330 /* removing message */
331 if (msg->pos == msg->size)
333 if (NULL != msg->transmit_cont)
334 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
335 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", s, bytes_read);
347 static struct ServerConnection *
348 server_lookup_session (struct Plugin *plugin,
349 struct MHD_Connection *mhd_connection, const char *url,
352 struct Session *s = NULL;
354 struct ServerConnection *sc = NULL;
355 const union MHD_ConnectionInfo *conn_info;
356 struct GNUNET_ATS_Information ats;
357 struct IPv4HttpAddress a4;
358 struct IPv6HttpAddress a6;
359 struct sockaddr_in *s4;
360 struct sockaddr_in6 *s6;
363 struct GNUNET_PeerIdentity target;
364 int check = GNUNET_NO;
366 int direction = GNUNET_SYSERR;
368 conn_info = MHD_get_connection_info (mhd_connection,
369 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
370 if ((conn_info->client_addr->sa_family != AF_INET) &&
371 (conn_info->client_addr->sa_family != AF_INET6))
374 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
377 char *tagc = (char *) &url[105];
379 memcpy (&hash, &url[1], 103);
382 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
383 &(target.hashPubKey)))
385 tag = strtoul (tagc, NULL, 10);
391 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
392 direction = _RECEIVE;
393 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
402 if (check == GNUNET_NO)
405 plugin->cur_connections++;
406 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
407 "Server: New %s connection from %s with tag %u\n",
409 GNUNET_i2s (&target), tag);
411 /* find duplicate session */
416 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
418 /* FIXME add source address comparison */
425 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
426 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
427 GNUNET_i2s (&target));
431 /* find semi-session */
432 t = plugin->server_semi_head;
436 /* FIXME add source address comparison */
437 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
447 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
448 "Server: Found existing semi-session for `%s'\n",
449 GNUNET_i2s (&target));
451 if ((direction == _SEND) && (t->server_send != NULL))
453 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
454 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
455 GNUNET_i2s (&target));
461 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
462 plugin->server_semi_tail, s);
463 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
464 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
465 "Server: Found matching semi-session, merging session for peer `%s'\n",
466 GNUNET_i2s (&target));
468 plugin->inbound_sessions ++;
469 GNUNET_STATISTICS_set (plugin->env->stats,
470 "# HTTP inbound sessions",
471 plugin->inbound_sessions,
473 GNUNET_assert (NULL != s);
476 if ((direction == _RECEIVE) && (t->server_recv != NULL))
478 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
479 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
480 GNUNET_i2s (&target));
486 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
487 plugin->server_semi_tail, s);
488 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
489 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
490 "Server: Found matching semi-session, merging session for peer `%s'\n",
491 GNUNET_i2s (&target));
492 plugin->inbound_sessions ++;
493 GNUNET_STATISTICS_set (plugin->env->stats,
494 "# HTTP inbound sessions",
495 plugin->inbound_sessions,
497 GNUNET_assert (NULL != s);
502 /* create new session */
503 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
504 "Server: Creating new session for peer `%s' \n",
505 GNUNET_i2s (&target));
506 switch (conn_info->client_addr->sa_family)
509 s4 = ((struct sockaddr_in *) conn_info->client_addr);
510 a4.u4_port = s4->sin_port;
511 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
513 a_len = sizeof (struct IPv4HttpAddress);
514 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
517 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
518 a6.u6_port = s6->sin6_port;
519 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
521 a_len = sizeof (struct IPv6HttpAddress);
522 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
528 s = create_session (plugin, &target, a, a_len);
529 GNUNET_assert (NULL != s);
530 s->ats_address_network_type = ats.value;
531 s->inbound = GNUNET_YES;
532 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
534 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
535 plugin->server_semi_tail, s);
539 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
540 "Server: Invalid connection request\n");
544 sc = GNUNET_malloc (sizeof (struct ServerConnection));
545 sc->mhd_conn = mhd_connection;
546 sc->direction = direction;
548 if (direction == _SEND)
550 if (direction == _RECEIVE)
553 #if MHD_VERSION >= 0x00090E00
554 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
556 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
557 "Server: Setting timeout for %X to %u sec.\n", sc, to);
558 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
560 struct MHD_Daemon *d = NULL;
562 if (s->addrlen == sizeof (struct IPv6HttpAddress))
563 d = plugin->server_v6;
564 if (s->addrlen == sizeof (struct IPv4HttpAddress))
565 d = plugin->server_v4;
567 server_reschedule (plugin, d, GNUNET_NO);
573 * Process GET or PUT request received via MHD. For
574 * GET, queue response that will send back our pending
575 * messages. For PUT, process incoming data and send
576 * to GNUnet core. In either case, check if a session
577 * already exists and create a new one if not.
580 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
581 const char *url, const char *method, const char *version,
582 const char *upload_data, size_t * upload_data_size,
583 void **httpSessionCache)
585 struct Plugin *plugin = cls;
586 struct ServerConnection *sc = *httpSessionCache;
588 struct MHD_Response *response;
591 GNUNET_assert (cls != NULL);
595 sc = server_lookup_session (plugin, mhd_connection, url, method);
597 (*httpSessionCache) = sc;
601 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
602 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
603 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
604 MHD_destroy_response (response);
609 /* existing connection */
610 sc = (*httpSessionCache);
613 GNUNET_assert (NULL != s);
615 /* connection is to be disconnected */
616 if (sc->disconnect == GNUNET_YES)
618 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
620 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
622 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
623 MHD_destroy_response (response);
627 GNUNET_assert (s != NULL);
628 /* Check if both directions are connected */
629 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
631 /* Delayed read from since not both semi-connections are connected */
635 if (sc->direction == _SEND)
638 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
640 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
641 MHD_destroy_response (response);
644 if (sc->direction == _RECEIVE)
646 if (*upload_data_size == 0)
648 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
649 "Server: Peer `%s' PUT on address `%s' connected\n",
650 GNUNET_i2s (&s->target),
651 http_plugin_address_to_string (NULL, s->addr,
657 if ((*upload_data_size > 0))
659 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
660 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
661 GNUNET_i2s (&s->target),
662 http_plugin_address_to_string (NULL, s->addr,
665 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
667 if ((s->next_receive.abs_value <= now.abs_value))
669 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
670 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
672 if (s->msg_tk == NULL)
674 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
676 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
677 *upload_data_size, GNUNET_NO, GNUNET_NO);
679 #if MHD_VERSION >= 0x00090E00
680 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
681 struct ServerConnection *t = NULL;
683 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
684 "Server: Received %u bytes\n", *upload_data_size);
685 /* Setting timeouts for other connections */
686 if (s->server_recv != NULL)
689 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
690 "Server: Setting timeout for %X to %u sec.\n", t,
692 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
695 if (s->server_send != NULL)
698 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
699 "Server: Setting timeout for %X to %u sec.\n", t,
701 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
704 struct MHD_Daemon *d = NULL;
706 if (s->addrlen == sizeof (struct IPv6HttpAddress))
707 d = plugin->server_v6;
708 if (s->addrlen == sizeof (struct IPv4HttpAddress))
709 d = plugin->server_v4;
710 server_reschedule (plugin, d, GNUNET_NO);
712 (*upload_data_size) = 0;
716 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
717 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
718 s, now.abs_value - s->next_receive.abs_value);
729 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
730 void **httpSessionCache)
732 struct ServerConnection *sc = *httpSessionCache;
733 struct ServerConnection *tc = NULL;
734 struct Session *s = NULL;
735 struct Session *t = NULL;
736 struct Plugin *plugin = NULL;
742 GNUNET_assert (NULL != s);
743 GNUNET_assert (NULL != p);
744 if (GNUNET_NO == exist_session(p, s))
748 if (sc->direction == _SEND)
751 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
752 "Server: %X peer `%s' GET on address `%s' disconnected\n",
753 s->server_send, GNUNET_i2s (&s->target),
754 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
755 GNUNET_free (s->server_send);
756 s->server_send = NULL;
757 if (s->server_recv != NULL)
760 tc->disconnect = GNUNET_YES;
761 #if MHD_VERSION >= 0x00090E00
762 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
767 if (sc->direction == _RECEIVE)
769 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
770 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
771 s->server_recv, GNUNET_i2s (&s->target),
772 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
773 GNUNET_free (s->server_recv);
774 s->server_recv = NULL;
775 if (s->server_send != NULL)
778 tc->disconnect = GNUNET_YES;
779 #if MHD_VERSION >= 0x00090E00
780 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
784 if (s->msg_tk != NULL)
786 GNUNET_SERVER_mst_destroy (s->msg_tk);
792 t = plugin->server_semi_head;
797 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
798 plugin->server_semi_tail, s);
799 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
804 plugin->cur_connections--;
806 struct MHD_Daemon *d = NULL;
808 if (s->addrlen == sizeof (struct IPv6HttpAddress))
809 d = plugin->server_v6;
810 if (s->addrlen == sizeof (struct IPv4HttpAddress))
811 d = plugin->server_v4;
812 server_reschedule (plugin, d, GNUNET_NO);
814 if ((s->server_send == NULL) && (s->server_recv == NULL))
816 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
817 "Server: peer `%s' on address `%s' disconnected\n",
818 GNUNET_i2s (&s->target),
819 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
820 if (s->msg_tk != NULL)
822 GNUNET_SERVER_mst_destroy (s->msg_tk);
826 GNUNET_assert (plugin->inbound_sessions > 0);
827 plugin->inbound_sessions --;
828 GNUNET_STATISTICS_set (plugin->env->stats,
829 "# HTTP inbound sessions",
830 plugin->inbound_sessions, GNUNET_NO);
832 notify_session_end (s->plugin, &s->target, s);
837 server_disconnect (struct Session *s)
839 if (s->server_send != NULL)
841 ((struct ServerConnection *) s->server_send)->disconnect = GNUNET_YES;
843 if (s->server_recv != NULL)
845 ((struct ServerConnection *) s->server_recv)->disconnect = GNUNET_YES;
852 server_send (struct Session *s, struct HTTP_Message *msg)
854 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
856 if (s->addrlen == sizeof (struct IPv4HttpAddress))
858 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
860 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
862 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
865 return GNUNET_SYSERR;
872 * Call MHD IPv4 to process pending requests and then go back
873 * and schedule the next run.
874 * @param cls plugin as closure
875 * @param tc task context
878 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
880 struct Plugin *plugin = cls;
882 GNUNET_assert (cls != NULL);
884 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
886 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
889 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
890 "Running IPv4 server\n");
892 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
893 if (plugin->server_v4 != NULL)
894 plugin->server_v4_task =
895 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
900 * Call MHD IPv6 to process pending requests and then go back
901 * and schedule the next run.
902 * @param cls plugin as closure
903 * @param tc task context
906 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
908 struct Plugin *plugin = cls;
910 GNUNET_assert (cls != NULL);
912 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
914 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
917 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
918 "Running IPv6 server\n");
920 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
921 if (plugin->server_v6 != NULL)
922 plugin->server_v6_task =
923 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
927 * Function that queries MHD's select sets and
928 * starts the task waiting for them.
929 * @param plugin plugin
930 * @param daemon_handle the MHD daemon handle
931 * @return gnunet task identifier
933 static GNUNET_SCHEDULER_TaskIdentifier
934 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
937 GNUNET_SCHEDULER_TaskIdentifier ret;
941 struct GNUNET_NETWORK_FDSet *wrs;
942 struct GNUNET_NETWORK_FDSet *wws;
943 struct GNUNET_NETWORK_FDSet *wes;
945 unsigned MHD_LONG_LONG timeout;
946 static unsigned long long last_timeout = 0;
949 struct GNUNET_TIME_Relative tv;
951 ret = GNUNET_SCHEDULER_NO_TASK;
955 wrs = GNUNET_NETWORK_fdset_create ();
956 wes = GNUNET_NETWORK_fdset_create ();
957 wws = GNUNET_NETWORK_fdset_create ();
959 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
960 haveto = MHD_get_timeout (daemon_handle, &timeout);
961 if (haveto == MHD_YES)
963 if (timeout != last_timeout)
966 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
967 "SELECT Timeout changed from %llu to %llu\n",
968 last_timeout, timeout);
970 last_timeout = timeout;
972 tv.rel_value = (uint64_t) timeout;
975 tv = GNUNET_TIME_UNIT_SECONDS;
976 /* Force immediate run, since we have outbound data to send */
977 if (now == GNUNET_YES)
978 tv = GNUNET_TIME_UNIT_MILLISECONDS;
979 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
980 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
981 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
983 if (daemon_handle == plugin->server_v4)
985 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
987 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
988 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
991 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
992 "Scheduling IPv4 server task in %llu ms\n", tv);
995 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
997 &server_v4_run, plugin);
999 if (daemon_handle == plugin->server_v6)
1001 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1003 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1004 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1007 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1008 "Scheduling IPv6 server task in %llu ms\n", tv);
1011 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1013 &server_v6_run, plugin);
1015 GNUNET_NETWORK_fdset_destroy (wrs);
1016 GNUNET_NETWORK_fdset_destroy (wws);
1017 GNUNET_NETWORK_fdset_destroy (wes);
1022 server_start (struct Plugin *plugin)
1024 int res = GNUNET_OK;
1025 unsigned int timeout;
1027 GNUNET_assert (NULL != plugin);
1030 res = server_load_certificate (plugin);
1031 if (res == GNUNET_SYSERR)
1033 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1034 "Could not load or create server certificate! Loading plugin failed!\n");
1040 #if MHD_VERSION >= 0x00090E00
1041 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1042 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1043 "MHD can set timeout per connection! Default time out %u sec.\n",
1046 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1047 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1048 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1051 plugin->server_v4 = NULL;
1052 if (plugin->ipv4 == GNUNET_YES)
1054 plugin->server_v4 = MHD_start_daemon (
1061 MHD_NO_FLAG, plugin->port,
1062 &server_accept_cb, plugin,
1063 &server_access_cb, plugin,
1064 MHD_OPTION_SOCK_ADDR,
1065 (struct sockaddr_in *)
1066 plugin->server_addr_v4,
1067 MHD_OPTION_CONNECTION_LIMIT,
1069 plugin->max_connections,
1071 MHD_OPTION_HTTPS_PRIORITIES,
1072 plugin->crypto_init,
1073 MHD_OPTION_HTTPS_MEM_KEY,
1075 MHD_OPTION_HTTPS_MEM_CERT,
1078 MHD_OPTION_CONNECTION_TIMEOUT,
1080 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1082 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1083 MHD_OPTION_NOTIFY_COMPLETED,
1084 &server_disconnect_cb, plugin,
1085 MHD_OPTION_EXTERNAL_LOGGER,
1086 server_log, NULL, MHD_OPTION_END);
1088 plugin->server_v6 = NULL;
1089 if (plugin->ipv6 == GNUNET_YES)
1091 plugin->server_v6 = MHD_start_daemon (
1098 MHD_USE_IPv6, plugin->port,
1099 &server_accept_cb, plugin,
1100 &server_access_cb, plugin,
1101 MHD_OPTION_SOCK_ADDR,
1102 (struct sockaddr_in6 *)
1103 plugin->server_addr_v6,
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);
1127 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1129 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1130 "Failed to start %s IPv4 server component on port %u\n",
1131 plugin->name, plugin->port);
1132 return GNUNET_SYSERR;
1134 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1136 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1138 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1139 "Failed to start %s IPv6 server component on port %u\n",
1140 plugin->name, plugin->port);
1141 return GNUNET_SYSERR;
1143 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1144 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1145 "%s server component started on port %u\n", plugin->name,
1151 server_stop (struct Plugin *plugin)
1153 struct Session *s = NULL;
1154 struct Session *t = NULL;
1158 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1160 plugin->server_v4 = NULL;
1161 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1163 plugin->server_v6 = NULL;
1165 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1167 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1168 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1171 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1173 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1174 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1177 if (server_v6_tmp != NULL)
1179 MHD_stop_daemon (server_v4_tmp);
1181 if (server_v6_tmp != NULL)
1183 MHD_stop_daemon (server_v6_tmp);
1186 /* cleaning up semi-sessions never propagated */
1187 s = plugin->server_semi_head;
1191 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1192 "Deleting semi-sessions %p\n", s);
1195 struct HTTP_Message *msg = s->msg_head;
1196 struct HTTP_Message *tmp = NULL;
1202 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1203 if (msg->transmit_cont != NULL)
1205 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1216 GNUNET_free_non_null (plugin->crypto_init);
1217 GNUNET_free_non_null (plugin->cert);
1218 GNUNET_free_non_null (plugin->key);
1221 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1222 "%s server component stopped\n", plugin->name);
1227 /* end of plugin_transport_http.c */