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;
372 struct GNUNET_ATS_Information ats;
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;
382 int direction = GNUNET_SYSERR;
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 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
419 if (check == GNUNET_NO)
422 plugin->cur_connections++;
425 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
426 "Server: New inbound connection from %s with tag %u\n",
427 GNUNET_i2s (&target), tag);
429 /* find duplicate session */
436 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
438 /* FIXME add source address comparison */
446 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
447 "Server: Duplicate session, dismissing new connection from peer `%s'\n",
448 GNUNET_i2s (&target));
453 /* find semi-session */
454 t = plugin->server_semi_head;
458 /* FIXME add source address comparison */
459 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
471 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
472 "Server: Found existing semi-session for `%s'\n",
473 GNUNET_i2s (&target));
476 if ((direction == _SEND) && (t->server_send != NULL))
479 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
480 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
481 GNUNET_i2s (&target));
488 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
489 plugin->server_semi_tail, s);
490 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));
499 if ((direction == _RECEIVE) && (t->server_recv != NULL))
502 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
503 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
504 GNUNET_i2s (&target));
511 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
512 plugin->server_semi_tail, s);
513 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
515 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
516 "Server: Found matching semi-session, merging session for peer `%s'\n",
517 GNUNET_i2s (&target));
523 /* create new session */
525 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
526 "Server: Creating new session for peer `%s' \n",
527 GNUNET_i2s (&target));
531 switch (conn_info->client_addr->sa_family)
534 s4 = ((struct sockaddr_in *) conn_info->client_addr);
535 a4.u4_port = s4->sin_port;
536 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
538 a_len = sizeof (struct IPv4HttpAddress);
539 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
542 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
543 a6.u6_port = s6->sin6_port;
544 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
546 a_len = sizeof (struct IPv6HttpAddress);
547 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
553 s = create_session (plugin, &target, a, a_len, NULL, NULL);
554 s->ats_address_network_type = ats.value;
556 s->inbound = GNUNET_YES;
557 s->next_receive = GNUNET_TIME_absolute_get_zero ();
559 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
561 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
563 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
564 plugin->server_semi_tail, s);
569 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
570 "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);
588 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
589 "Server: Setting timeout for %X to %u sec.\n", sc, to);
591 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
593 struct MHD_Daemon *d = NULL;
595 if (s->addrlen == sizeof (struct IPv6HttpAddress))
596 d = plugin->server_v6;
597 if (s->addrlen == sizeof (struct IPv4HttpAddress))
598 d = plugin->server_v4;
600 server_reschedule (plugin, d, GNUNET_NO);
606 * Process GET or PUT request received via MHD. For
607 * GET, queue response that will send back our pending
608 * messages. For PUT, process incoming data and send
609 * to GNUnet core. In either case, check if a session
610 * already exists and create a new one if not.
613 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
614 const char *url, const char *method, const char *version,
615 const char *upload_data, size_t * upload_data_size,
616 void **httpSessionCache)
619 struct Plugin *plugin = cls;
620 struct ServerConnection *sc = *httpSessionCache;
621 struct Session *s = NULL;
624 struct MHD_Response *response;
626 GNUNET_assert (cls != NULL);
630 sc = server_lookup_session (plugin, mhd_connection, url, method);
632 (*httpSessionCache) = sc;
636 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
637 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
638 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
639 MHD_destroy_response (response);
644 /* existing connection */
645 sc = (*httpSessionCache);
648 /* connection is to be disconnected */
649 if (sc->disconnect == GNUNET_YES)
652 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
654 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
656 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
657 "Sent HTTP/1.1: 200 OK as PUT Response\n");
659 MHD_destroy_response (response);
663 GNUNET_assert (s != NULL);
664 /* Check if both directions are connected */
665 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
668 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
669 "Server: Delayed read from `%s' `%s' since not both semi-connections are connected\n",
670 GNUNET_i2s (&s->target),
671 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
676 if (sc->direction == _SEND)
679 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
681 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
682 MHD_destroy_response (response);
685 if (sc->direction == _RECEIVE)
687 if (*upload_data_size == 0)
690 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
691 "Server: Peer `%s' PUT on address `%s' connected\n",
692 GNUNET_i2s (&s->target),
693 http_plugin_address_to_string (NULL, s->addr,
700 if ((*upload_data_size > 0))
703 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
704 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
705 GNUNET_i2s (&s->target),
706 http_plugin_address_to_string (NULL, s->addr,
710 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
712 if ((s->next_receive.abs_value <= now.abs_value))
715 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
716 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
719 if (s->msg_tk == NULL)
721 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
723 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
724 *upload_data_size, GNUNET_NO, GNUNET_NO);
726 #if MHD_VERSION >= 0x00090E00
727 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
728 struct ServerConnection *t = NULL;
731 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
732 "Server: Received %u bytes\n", *upload_data_size);
735 /* Setting timeouts for other connections */
736 if (s->server_recv != NULL)
740 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
741 "Server: Setting timeout for %X to %u sec.\n", t,
744 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
747 if (s->server_send != NULL)
751 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
752 "Server: Setting timeout for %X to %u sec.\n", t,
755 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
758 struct MHD_Daemon *d = NULL;
760 if (s->addrlen == sizeof (struct IPv6HttpAddress))
761 d = plugin->server_v6;
762 if (s->addrlen == sizeof (struct IPv4HttpAddress))
763 d = plugin->server_v4;
764 server_reschedule (plugin, d, GNUNET_NO);
766 (*upload_data_size) = 0;
771 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
772 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
773 s, now.abs_value - s->next_receive.abs_value);
785 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
786 void **httpSessionCache)
788 struct ServerConnection *sc = *httpSessionCache;
789 struct ServerConnection *tc = NULL;
790 struct Session *s = NULL;
791 struct Session *t = NULL;
792 struct Plugin *plugin = NULL;
799 if (sc->direction == _SEND)
802 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
803 "Server: %X peer `%s' GET on address `%s' disconnected\n",
804 s->server_send, GNUNET_i2s (&s->target),
805 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
807 s->server_send = NULL;
809 if (s->server_recv != NULL)
812 tc->disconnect = GNUNET_YES;
813 #if MHD_VERSION >= 0x00090E00
814 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
819 if (sc->direction == _RECEIVE)
822 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
823 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
824 s->server_recv, GNUNET_i2s (&s->target),
825 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
827 s->server_recv = NULL;
828 if (s->server_send != NULL)
831 tc->disconnect = GNUNET_YES;
832 #if MHD_VERSION >= 0x00090E00
833 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
837 if (s->msg_tk != NULL)
839 GNUNET_SERVER_mst_destroy (s->msg_tk);
845 t = plugin->server_semi_head;
850 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
851 plugin->server_semi_tail, s);
852 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
857 plugin->cur_connections--;
859 struct MHD_Daemon *d = NULL;
861 if (s->addrlen == sizeof (struct IPv6HttpAddress))
862 d = plugin->server_v6;
863 if (s->addrlen == sizeof (struct IPv4HttpAddress))
864 d = plugin->server_v4;
865 server_reschedule (plugin, d, GNUNET_NO);
867 if ((s->server_send == NULL) && (s->server_recv == NULL))
870 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
871 "Server: peer `%s' on address `%s' disconnected\n",
872 GNUNET_i2s (&s->target),
873 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
875 if (s->msg_tk != NULL)
877 GNUNET_SERVER_mst_destroy (s->msg_tk);
881 notify_session_end (s->plugin, &s->target, s);
886 server_disconnect (struct Session *s)
888 struct Plugin *plugin = s->plugin;
889 struct Session *t = plugin->head;
893 if (t->inbound == GNUNET_YES)
895 if (t->server_send != NULL)
897 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
899 if (t->server_send != NULL)
901 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
910 server_send (struct Session *s, struct HTTP_Message *msg)
912 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
914 if (s->addrlen == sizeof (struct IPv4HttpAddress))
916 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
918 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
920 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
923 return GNUNET_SYSERR;
930 * Call MHD IPv4 to process pending requests and then go back
931 * and schedule the next run.
932 * @param cls plugin as closure
933 * @param tc task context
936 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
938 struct Plugin *plugin = cls;
940 GNUNET_assert (cls != NULL);
942 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
944 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
947 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
948 "Running IPv4 server\n");
950 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
951 if (plugin->server_v4 != NULL)
952 plugin->server_v4_task =
953 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
958 * Call MHD IPv6 to process pending requests and then go back
959 * and schedule the next run.
960 * @param cls plugin as closure
961 * @param tc task context
964 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
966 struct Plugin *plugin = cls;
968 GNUNET_assert (cls != NULL);
970 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
972 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
975 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
976 "Running IPv6 server\n");
978 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
979 if (plugin->server_v6 != NULL)
980 plugin->server_v6_task =
981 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
985 * Function that queries MHD's select sets and
986 * starts the task waiting for them.
987 * @param plugin plugin
988 * @param daemon_handle the MHD daemon handle
989 * @return gnunet task identifier
991 static GNUNET_SCHEDULER_TaskIdentifier
992 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
995 GNUNET_SCHEDULER_TaskIdentifier ret;
999 struct GNUNET_NETWORK_FDSet *wrs;
1000 struct GNUNET_NETWORK_FDSet *wws;
1001 struct GNUNET_NETWORK_FDSet *wes;
1003 unsigned long long timeout;
1004 static unsigned long long last_timeout = 0;
1007 struct GNUNET_TIME_Relative tv;
1009 ret = GNUNET_SCHEDULER_NO_TASK;
1013 wrs = GNUNET_NETWORK_fdset_create ();
1014 wes = GNUNET_NETWORK_fdset_create ();
1015 wws = GNUNET_NETWORK_fdset_create ();
1017 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1018 haveto = MHD_get_timeout (daemon_handle, &timeout);
1019 if (haveto == MHD_YES)
1021 if (timeout != last_timeout)
1024 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1025 "SELECT Timeout changed from %llu to %llu\n",
1026 last_timeout, timeout);
1028 last_timeout = timeout;
1030 tv.rel_value = (uint64_t) timeout;
1033 tv = GNUNET_TIME_UNIT_SECONDS;
1034 /* Force immediate run, since we have outbound data to send */
1035 if (now == GNUNET_YES)
1036 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1037 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1038 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1039 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1041 if (daemon_handle == plugin->server_v4)
1043 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1045 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1046 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1049 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1050 "Scheduling IPv4 server task in %llu ms\n", tv);
1053 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1054 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
1055 &server_v4_run, plugin);
1057 if (daemon_handle == plugin->server_v6)
1059 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1061 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1062 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1065 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1066 "Scheduling IPv6 server task in %llu ms\n", tv);
1069 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1070 GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
1071 &server_v6_run, plugin);
1073 GNUNET_NETWORK_fdset_destroy (wrs);
1074 GNUNET_NETWORK_fdset_destroy (wws);
1075 GNUNET_NETWORK_fdset_destroy (wes);
1080 server_start (struct Plugin *plugin)
1082 int res = GNUNET_OK;
1083 unsigned int timeout;
1086 res = server_load_certificate (plugin);
1087 if (res == GNUNET_SYSERR)
1089 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1090 "Could not load or create server certificate! Loading plugin failed!\n");
1096 #if MHD_VERSION >= 0x00090E00
1097 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1098 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1099 "MHD can set timeout per connection! Default time out %u sec.\n",
1102 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1103 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1104 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1107 plugin->server_v4 = NULL;
1108 if (plugin->ipv4 == GNUNET_YES)
1110 plugin->server_v4 = MHD_start_daemon (
1117 MHD_NO_FLAG, plugin->port,
1118 &server_accept_cb, plugin,
1119 &server_access_cb, plugin,
1120 MHD_OPTION_SOCK_ADDR,
1121 (struct sockaddr_in *)
1122 plugin->server_addr_v4,
1123 MHD_OPTION_CONNECTION_LIMIT,
1125 plugin->max_connections,
1127 MHD_OPTION_HTTPS_PRIORITIES,
1128 plugin->crypto_init,
1129 MHD_OPTION_HTTPS_MEM_KEY,
1131 MHD_OPTION_HTTPS_MEM_CERT,
1134 MHD_OPTION_CONNECTION_TIMEOUT,
1136 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1138 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1139 MHD_OPTION_NOTIFY_COMPLETED,
1140 &server_disconnect_cb, plugin,
1141 MHD_OPTION_EXTERNAL_LOGGER,
1142 server_log, NULL, MHD_OPTION_END);
1144 plugin->server_v6 = NULL;
1145 if (plugin->ipv6 == GNUNET_YES)
1147 plugin->server_v6 = MHD_start_daemon (
1154 MHD_USE_IPv6, plugin->port,
1155 &server_accept_cb, plugin,
1156 &server_access_cb, plugin,
1157 MHD_OPTION_SOCK_ADDR,
1158 (struct sockaddr_in6 *)
1159 plugin->server_addr_v6,
1160 MHD_OPTION_CONNECTION_LIMIT,
1162 plugin->max_connections,
1164 MHD_OPTION_HTTPS_PRIORITIES,
1165 plugin->crypto_init,
1166 MHD_OPTION_HTTPS_MEM_KEY,
1168 MHD_OPTION_HTTPS_MEM_CERT,
1171 MHD_OPTION_CONNECTION_TIMEOUT,
1173 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1175 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1176 MHD_OPTION_NOTIFY_COMPLETED,
1177 &server_disconnect_cb, plugin,
1178 MHD_OPTION_EXTERNAL_LOGGER,
1179 server_log, NULL, MHD_OPTION_END);
1183 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1185 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1186 "Failed to start %s IPv4 server component on port %u\n",
1187 plugin->name, plugin->port);
1188 return GNUNET_SYSERR;
1190 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1192 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1194 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1195 "Failed to start %s IPv6 server component on port %u\n",
1196 plugin->name, plugin->port);
1197 return GNUNET_SYSERR;
1199 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1203 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1204 "%s server component started on port %u\n", plugin->name,
1211 server_stop (struct Plugin *plugin)
1213 struct Session *s = NULL;
1214 struct Session *t = NULL;
1217 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, "server_stop\n");
1220 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1222 plugin->server_v4 = NULL;
1223 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1225 plugin->server_v6 = NULL;
1227 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1229 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1230 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1233 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1235 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1236 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1239 if (server_v6_tmp != NULL)
1241 MHD_stop_daemon (server_v4_tmp);
1243 if (server_v6_tmp != NULL)
1245 MHD_stop_daemon (server_v6_tmp);
1248 /* cleaning up semi-sessions never propagated */
1249 s = plugin->server_semi_head;
1253 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1254 "Deleting semi-sessions %p\n", s);
1257 struct HTTP_Message *msg = s->msg_head;
1258 struct HTTP_Message *tmp = NULL;
1264 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1265 if (msg->transmit_cont != NULL)
1267 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1278 GNUNET_free_non_null (plugin->crypto_init);
1279 GNUNET_free_non_null (plugin->cert);
1280 GNUNET_free_non_null (plugin->key);
1284 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1285 "%s server component stopped\n", plugin->name);
1291 /* end of plugin_transport_http.c */