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 * @param now schedule now or with MHD delay
51 * @return gnunet task identifier
53 static GNUNET_SCHEDULER_TaskIdentifier
54 server_schedule (struct Plugin *plugin,
55 struct MHD_Daemon *daemon_handle,
59 server_log (void *arg, const char *fmt, va_list ap)
63 vsnprintf (text, sizeof (text), fmt, ap);
65 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Server: %s\n", text);
69 * Check if incoming connection is accepted.
70 * NOTE: Here every connection is accepted
71 * @param cls plugin as closure
72 * @param addr address of incoming connection
73 * @param addr_len address length of incoming connection
74 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
78 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
80 struct Plugin *plugin = cls;
82 if (plugin->cur_connections <= plugin->max_connections)
86 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
87 "Server: Cannot accept new connections\n");
95 server_load_file (const char *file)
97 struct GNUNET_DISK_FileHandle *gn_file;
101 if (0 != STAT (file, &fstat))
103 text = GNUNET_malloc (fstat.st_size + 1);
105 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
106 GNUNET_DISK_PERM_USER_READ);
112 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fstat.st_size))
115 GNUNET_DISK_file_close (gn_file);
118 text[fstat.st_size] = '\0';
119 GNUNET_DISK_file_close (gn_file);
128 server_load_certificate (struct Plugin *plugin)
135 /* Get crypto init string from config
136 * If not present just use default values */
138 GNUNET_assert (GNUNET_OK ==
139 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
142 &plugin->crypto_init));
145 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
146 "KEY_FILE", &key_file))
148 key_file = GNUNET_strdup ("https_key.key");
152 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
153 "CERT_FILE", &cert_file))
155 GNUNET_asprintf (&cert_file, "%s", "https_cert.crt");
158 /* read key & certificates from file */
160 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
161 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
162 key_file, cert_file);
165 plugin->key = server_load_file (key_file);
166 plugin->cert = server_load_file (cert_file);
168 if ((plugin->key == NULL) || (plugin->cert == NULL))
170 struct GNUNET_OS_Process *cert_creation;
172 GNUNET_free_non_null (plugin->key);
174 GNUNET_free_non_null (plugin->cert);
178 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
179 "No usable TLS certificate found, creating certificate\n");
183 GNUNET_OS_start_process (NULL, NULL,
184 "gnunet-transport-certificate-creation",
185 "gnunet-transport-certificate-creation",
186 key_file, cert_file, NULL);
187 if (cert_creation == NULL)
189 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
191 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
192 GNUNET_free (key_file);
193 GNUNET_free (cert_file);
195 GNUNET_free_non_null (plugin->key);
197 GNUNET_free_non_null (plugin->cert);
199 GNUNET_free_non_null (plugin->crypto_init);
200 plugin->crypto_init = NULL;
202 return GNUNET_SYSERR;
204 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
205 GNUNET_OS_process_close (cert_creation);
207 plugin->key = server_load_file (key_file);
208 plugin->cert = server_load_file (cert_file);
211 if ((plugin->key == NULL) || (plugin->cert == NULL))
213 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
215 ("No usable TLS certificate found and creating one failed!\n"),
217 GNUNET_free (key_file);
218 GNUNET_free (cert_file);
220 GNUNET_free_non_null (plugin->key);
222 GNUNET_free_non_null (plugin->cert);
224 GNUNET_free_non_null (plugin->crypto_init);
225 plugin->crypto_init = NULL;
227 return GNUNET_SYSERR;
229 GNUNET_free (key_file);
230 GNUNET_free (cert_file);
232 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
241 * Reschedule the execution of both IPv4 and IPv6 server
242 * @param plugin the plugin
243 * @param server which server to schedule v4 or v6?
244 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
249 server_reschedule (struct Plugin *plugin, struct MHD_Daemon *server, int now)
251 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
253 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
255 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
256 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
258 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
261 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
263 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
265 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
266 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
268 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
273 * Callback called by MessageStreamTokenizer when a message has arrived
274 * @param cls current session as closure
275 * @param client clien
276 * @param message the message to be forwarded to transport service
279 server_receive_mst_cb (void *cls, void *client,
280 const struct GNUNET_MessageHeader *message)
282 struct Session *s = cls;
285 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)
297 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
298 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
299 GNUNET_i2s (&s->target),
300 http_plugin_address_to_string (NULL, s->addr, s->addrlen),
307 * Callback called by MHD when it needs data to send
308 * @param cls current session
309 * @param pos position in buffer
310 * @param buf the buffer to write data to
311 * @param max max number of bytes available in buffer
312 * @return bytes written to buffer
315 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
317 struct Session *s = cls;
320 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, s->plugin->name,
321 "Server: %X can sent maximum %u \n", s, max);
323 struct HTTP_Message *msg;
331 if ((msg->size - msg->pos) <= max)
333 memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
334 bytes_read = msg->size - msg->pos;
335 msg->pos += (msg->size - msg->pos);
339 memcpy (buf, &msg->buf[msg->pos], max);
344 /* removing message */
345 if (msg->pos == msg->size)
347 if (NULL != msg->transmit_cont)
348 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK);
349 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
355 struct Plugin *plugin = s->plugin;
357 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
358 "Server: %X: sent %u bytes\n", s, bytes_read);
363 static struct ServerConnection *
364 server_lookup_session (struct Plugin *plugin,
365 struct MHD_Connection *mhd_connection, const char *url,
368 struct Session *s = NULL;
370 struct ServerConnection *sc = NULL;
371 const union MHD_ConnectionInfo *conn_info;
373 struct IPv4HttpAddress a4;
374 struct IPv6HttpAddress a6;
375 struct sockaddr_in *s4;
376 struct sockaddr_in6 *s6;
379 struct GNUNET_PeerIdentity target;
380 int check = GNUNET_NO;
385 MHD_get_connection_info (mhd_connection,
386 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
387 if ((conn_info->client_addr->sa_family != AF_INET) &&
388 (conn_info->client_addr->sa_family != AF_INET6))
391 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
394 char *tagc = (char *) &url[105];
396 memcpy (&hash, &url[1], 103);
399 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
400 &(target.hashPubKey)))
402 tag = strtoul (tagc, NULL, 10);
408 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
409 direction = _RECEIVE;
410 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
413 if (check == GNUNET_NO)
416 plugin->cur_connections++;
419 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
420 "Server: New inbound connection from %s with tag %u\n",
421 GNUNET_i2s (&target), tag);
423 /* find duplicate session */
430 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
432 /* FIXME add source address comparison */
440 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
441 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
442 GNUNET_i2s (&target));
447 /* find semi-session */
448 t = plugin->server_semi_head;
452 /* FIXME add source address comparison */
453 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
465 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
466 "Server: Found existing semi-session for `%s'\n",
467 GNUNET_i2s (&target));
470 if ((direction == _SEND) && (t->server_send != NULL))
473 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
474 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
475 GNUNET_i2s (&target));
482 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
483 plugin->server_semi_tail, s);
484 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
486 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
487 "Server: Found matching semi-session, merging session for peer `%s'\n",
488 GNUNET_i2s (&target));
493 if ((direction == _RECEIVE) && (t->server_recv != NULL))
496 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
497 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
498 GNUNET_i2s (&target));
505 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
506 plugin->server_semi_tail, s);
507 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
509 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
510 "Server: Found matching semi-session, merging session for peer `%s'\n",
511 GNUNET_i2s (&target));
517 /* create new session */
519 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
520 "Server: Creating new session for peer `%s' \n",
521 GNUNET_i2s (&target));
524 switch (conn_info->client_addr->sa_family)
527 s4 = ((struct sockaddr_in *) conn_info->client_addr);
528 a4.u4_port = s4->sin_port;
529 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
531 a_len = sizeof (struct IPv4HttpAddress);
534 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
535 a6.u6_port = s6->sin6_port;
536 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
538 a_len = sizeof (struct IPv6HttpAddress);
544 s = create_session (plugin, &target, a, a_len, NULL, NULL);
546 s->inbound = GNUNET_YES;
547 s->next_receive = GNUNET_TIME_absolute_get_zero ();
549 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
551 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
553 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
554 plugin->server_semi_tail, s);
559 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
560 "Server: Invalid connection request\n");
565 sc = GNUNET_malloc (sizeof (struct ServerConnection));
566 sc->mhd_conn = mhd_connection;
567 sc->direction = direction;
569 if (direction == _SEND)
571 if (direction == _RECEIVE)
574 #if MHD_VERSION >= 0x00090E00
575 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
578 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
579 "Server: Setting timeout for %X to %u sec.\n", sc, to);
581 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
583 struct MHD_Daemon *d = NULL;
585 if (s->addrlen == sizeof (struct IPv6HttpAddress))
586 d = plugin->server_v6;
587 if (s->addrlen == sizeof (struct IPv4HttpAddress))
588 d = plugin->server_v4;
590 server_reschedule (plugin, d, GNUNET_NO);
596 * Process GET or PUT request received via MHD. For
597 * GET, queue response that will send back our pending
598 * messages. For PUT, process incoming data and send
599 * to GNUnet core. In either case, check if a session
600 * already exists and create a new one if not.
603 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
604 const char *url, const char *method, const char *version,
605 const char *upload_data, size_t * upload_data_size,
606 void **httpSessionCache)
609 struct Plugin *plugin = cls;
610 struct ServerConnection *sc = *httpSessionCache;
611 struct Session *s = NULL;
614 struct MHD_Response *response;
616 GNUNET_assert (cls != NULL);
620 sc = server_lookup_session (plugin, mhd_connection, url, method);
622 (*httpSessionCache) = sc;
626 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
627 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
628 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
629 MHD_destroy_response (response);
634 /* existing connection */
635 sc = (*httpSessionCache);
638 /* connection is to be disconnected */
639 if (sc->disconnect == GNUNET_YES)
642 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
644 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
647 "Sent HTTP/1.1: 200 OK as PUT Response\n");
649 MHD_destroy_response (response);
653 GNUNET_assert (s != NULL);
654 /* Check if both directions are connected */
655 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
658 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
659 "Server: Delayed read from `%s' `%s' since not both semi-connections are connected\n",
660 GNUNET_i2s (&s->target),
661 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
666 if (sc->direction == _SEND)
669 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
671 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
672 MHD_destroy_response (response);
675 if (sc->direction == _RECEIVE)
677 if (*upload_data_size == 0)
680 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
681 "Server: Peer `%s' PUT on address `%s' connected\n",
682 GNUNET_i2s (&s->target),
683 http_plugin_address_to_string (NULL, s->addr,
690 if ((*upload_data_size > 0))
693 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
694 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
695 GNUNET_i2s (&s->target),
696 http_plugin_address_to_string (NULL, s->addr,
700 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
702 if ((s->next_receive.abs_value <= now.abs_value))
705 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
706 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
709 if (s->msg_tk == NULL)
711 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
714 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
715 *upload_data_size, GNUNET_NO, GNUNET_NO);
717 #if MHD_VERSION >= 0x00090E00
718 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
719 struct ServerConnection *t = NULL;
722 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
723 "Server: Received %u bytes\n", *upload_data_size);
726 /* Setting timeouts for other connections */
727 if (s->server_recv != NULL)
731 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
732 "Server: Setting timeout for %X to %u sec.\n", t,
735 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
738 if (s->server_send != NULL)
742 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
743 "Server: Setting timeout for %X to %u sec.\n", t,
746 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
749 struct MHD_Daemon *d = NULL;
751 if (s->addrlen == sizeof (struct IPv6HttpAddress))
752 d = plugin->server_v6;
753 if (s->addrlen == sizeof (struct IPv4HttpAddress))
754 d = plugin->server_v4;
755 server_reschedule (plugin, d, GNUNET_NO);
757 (*upload_data_size) = 0;
762 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
763 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
764 s, now.abs_value - s->next_receive.abs_value);
776 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
777 void **httpSessionCache)
779 struct ServerConnection *sc = *httpSessionCache;
780 struct ServerConnection *tc = *httpSessionCache;
781 struct Session *s = NULL;
782 struct Session *t = NULL;
783 struct Plugin *plugin = NULL;
790 if (sc->direction == _SEND)
793 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
794 "Server: %X peer `%s' GET on address `%s' disconnected\n",
795 s->server_send, GNUNET_i2s (&s->target),
796 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
798 s->server_send = NULL;
800 if (s->server_recv != NULL)
803 tc->disconnect = GNUNET_YES;
804 #if MHD_VERSION >= 0x00090E00
805 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
810 if (sc->direction == _RECEIVE)
813 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
814 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
815 s->server_recv, GNUNET_i2s (&s->target),
816 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
818 s->server_recv = NULL;
819 if (s->server_send != NULL)
822 tc->disconnect = GNUNET_YES;
823 #if MHD_VERSION >= 0x00090E00
824 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
828 if (s->msg_tk != NULL)
830 GNUNET_SERVER_mst_destroy (s->msg_tk);
836 t = plugin->server_semi_head;
841 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
842 plugin->server_semi_tail, s);
843 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
848 plugin->cur_connections--;
850 struct MHD_Daemon *d = NULL;
852 if (s->addrlen == sizeof (struct IPv6HttpAddress))
853 d = plugin->server_v6;
854 if (s->addrlen == sizeof (struct IPv4HttpAddress))
855 d = plugin->server_v4;
856 server_reschedule (plugin, d, GNUNET_NO);
858 if ((s->server_send == NULL) && (s->server_recv == NULL))
861 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
862 "Server: peer `%s' on address `%s' disconnected\n",
863 GNUNET_i2s (&s->target),
864 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
866 if (s->msg_tk != NULL)
868 GNUNET_SERVER_mst_destroy (s->msg_tk);
872 notify_session_end (s->plugin, &s->target, s);
877 server_disconnect (struct Session *s)
879 struct Plugin *plugin = s->plugin;
880 struct Session *t = plugin->head;
884 if (t->inbound == GNUNET_YES)
886 if (t->server_send != NULL)
888 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
890 if (t->server_send != NULL)
892 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
901 server_send (struct Session *s, struct HTTP_Message *msg)
903 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
905 if (s->addrlen == sizeof (struct IPv4HttpAddress))
907 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
909 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
911 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
914 return GNUNET_SYSERR;
921 * Call MHD IPv4 to process pending requests and then go back
922 * and schedule the next run.
923 * @param cls plugin as closure
924 * @param tc task context
927 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
929 struct Plugin *plugin = cls;
931 GNUNET_assert (cls != NULL);
933 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
935 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
938 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
939 "Running IPv4 server\n");
941 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
942 if (plugin->server_v4 != NULL)
943 plugin->server_v4_task =
944 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
949 * Call MHD IPv6 to process pending requests and then go back
950 * and schedule the next run.
951 * @param cls plugin as closure
952 * @param tc task context
955 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
957 struct Plugin *plugin = cls;
959 GNUNET_assert (cls != NULL);
961 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
963 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
966 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
967 "Running IPv6 server\n");
969 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
970 if (plugin->server_v6 != NULL)
971 plugin->server_v6_task =
972 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
976 * Function that queries MHD's select sets and
977 * starts the task waiting for them.
978 * @param plugin plugin
979 * @param daemon_handle the MHD daemon handle
980 * @return gnunet task identifier
982 static GNUNET_SCHEDULER_TaskIdentifier
983 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
986 GNUNET_SCHEDULER_TaskIdentifier ret;
990 struct GNUNET_NETWORK_FDSet *wrs;
991 struct GNUNET_NETWORK_FDSet *wws;
992 struct GNUNET_NETWORK_FDSet *wes;
994 unsigned long long timeout;
995 static unsigned long long last_timeout = 0;
998 struct GNUNET_TIME_Relative tv;
1000 ret = GNUNET_SCHEDULER_NO_TASK;
1004 wrs = GNUNET_NETWORK_fdset_create ();
1005 wes = GNUNET_NETWORK_fdset_create ();
1006 wws = GNUNET_NETWORK_fdset_create ();
1008 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1009 haveto = MHD_get_timeout (daemon_handle, &timeout);
1010 if (haveto == MHD_YES)
1012 if (timeout != last_timeout)
1015 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1016 "SELECT Timeout changed from %llu to %llu\n",
1017 last_timeout, timeout);
1019 last_timeout = timeout;
1021 tv.rel_value = (uint64_t) timeout;
1024 tv = GNUNET_TIME_UNIT_SECONDS;
1025 /* Force immediate run, since we have outbound data to send */
1026 if (now == GNUNET_YES)
1027 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1028 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1029 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1030 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1032 if (daemon_handle == plugin->server_v4)
1034 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1036 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1037 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1040 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1041 "Scheduling IPv4 server task in %llu ms\n", tv);
1044 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1045 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
1046 &server_v4_run, plugin);
1048 if (daemon_handle == plugin->server_v6)
1050 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1052 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1053 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1056 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1057 "Scheduling IPv6 server task in %llu ms\n", tv);
1060 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1061 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
1062 &server_v6_run, plugin);
1064 GNUNET_NETWORK_fdset_destroy (wrs);
1065 GNUNET_NETWORK_fdset_destroy (wws);
1066 GNUNET_NETWORK_fdset_destroy (wes);
1071 server_start (struct Plugin *plugin)
1073 int res = GNUNET_OK;
1074 unsigned int timeout;
1077 res = server_load_certificate (plugin);
1078 if (res == GNUNET_SYSERR)
1080 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1081 "Could not load or create server certificate! Loading plugin failed!\n");
1087 #if MHD_VERSION >= 0x00090E00
1088 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1089 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1090 "MHD can set timeout per connection! Default time out %u sec.\n",
1093 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1094 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1095 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1098 plugin->server_v4 = NULL;
1099 if (plugin->ipv4 == GNUNET_YES)
1101 plugin->server_v4 = MHD_start_daemon (
1108 MHD_NO_FLAG, plugin->port,
1109 &server_accept_cb, plugin,
1110 &server_access_cb, plugin,
1111 MHD_OPTION_SOCK_ADDR,
1112 (struct sockaddr_in *)
1113 plugin->server_addr_v4,
1114 MHD_OPTION_CONNECTION_LIMIT,
1116 plugin->max_connections,
1118 MHD_OPTION_HTTPS_PRIORITIES,
1119 plugin->crypto_init,
1120 MHD_OPTION_HTTPS_MEM_KEY,
1122 MHD_OPTION_HTTPS_MEM_CERT,
1125 MHD_OPTION_CONNECTION_TIMEOUT,
1127 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1129 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1130 MHD_OPTION_NOTIFY_COMPLETED,
1131 &server_disconnect_cb, plugin,
1132 MHD_OPTION_EXTERNAL_LOGGER,
1133 server_log, NULL, MHD_OPTION_END);
1135 plugin->server_v6 = NULL;
1136 if (plugin->ipv6 == GNUNET_YES)
1138 plugin->server_v6 = MHD_start_daemon (
1145 MHD_USE_IPv6, plugin->port,
1146 &server_accept_cb, plugin,
1147 &server_access_cb, plugin,
1148 MHD_OPTION_SOCK_ADDR,
1149 (struct sockaddr_in6 *)
1150 plugin->server_addr_v6,
1151 MHD_OPTION_CONNECTION_LIMIT,
1153 plugin->max_connections,
1155 MHD_OPTION_HTTPS_PRIORITIES,
1156 plugin->crypto_init,
1157 MHD_OPTION_HTTPS_MEM_KEY,
1159 MHD_OPTION_HTTPS_MEM_CERT,
1162 MHD_OPTION_CONNECTION_TIMEOUT,
1164 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1166 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1167 MHD_OPTION_NOTIFY_COMPLETED,
1168 &server_disconnect_cb, plugin,
1169 MHD_OPTION_EXTERNAL_LOGGER,
1170 server_log, NULL, MHD_OPTION_END);
1174 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1176 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1177 "Failed to start %s IPv4 server component on port %u\n",
1178 plugin->name, plugin->port);
1179 return GNUNET_SYSERR;
1181 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1183 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1185 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1186 "Failed to start %s IPv6 server component on port %u\n",
1187 plugin->name, plugin->port);
1188 return GNUNET_SYSERR;
1190 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1194 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1195 "%s server component started on port %u\n", plugin->name,
1202 server_stop (struct Plugin *plugin)
1204 struct Session *s = NULL;
1205 struct Session *t = NULL;
1208 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, "server_stop\n");
1211 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1213 plugin->server_v4 = NULL;
1214 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1216 plugin->server_v6 = NULL;
1218 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1220 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1221 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1224 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1226 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1227 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1230 if (server_v6_tmp != NULL)
1232 MHD_stop_daemon (server_v4_tmp);
1234 if (server_v6_tmp != NULL)
1236 MHD_stop_daemon (server_v6_tmp);
1239 /* cleaning up semi-sessions never propagated */
1240 s = plugin->server_semi_head;
1244 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1245 "Deleting semi-sessions %p\n", s);
1248 struct HTTP_Message *msg = s->msg_head;
1249 struct HTTP_Message *tmp = s->msg_head;
1255 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1256 if (msg->transmit_cont != NULL)
1258 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1269 GNUNET_free_non_null (plugin->crypto_init);
1270 GNUNET_free_non_null (plugin->cert);
1271 GNUNET_free_non_null (plugin->key);
1275 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1276 "%s server component stopped\n", plugin->name);
1282 /* end of plugin_transport_http.c */