2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 3, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
27 #include "plugin_transport_http.h"
29 #define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
33 static struct Plugin * p;
35 struct ServerConnection
40 /* should this connection get disconnected? GNUNET_YES/NO */
43 struct Session *session;
44 struct MHD_Connection *mhd_conn;
48 * Function that queries MHD's select sets and
49 * starts the task waiting for them.
50 * @param plugin plugin
51 * @param daemon_handle the MHD daemon handle
52 * @param now schedule now or with MHD delay
53 * @return gnunet task identifier
55 static GNUNET_SCHEDULER_TaskIdentifier
56 server_schedule (struct Plugin *plugin,
57 struct MHD_Daemon *daemon_handle,
61 server_log (void *arg, const char *fmt, va_list ap)
65 vsnprintf (text, sizeof (text), fmt, ap);
67 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
71 * Check if incoming connection is accepted.
72 * NOTE: Here every connection is accepted
73 * @param cls plugin as closure
74 * @param addr address of incoming connection
75 * @param addr_len address length of incoming connection
76 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
80 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
82 struct Plugin *plugin = cls;
84 if (plugin->cur_connections <= plugin->max_connections)
88 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
89 "Server: Cannot accept new connections\n");
97 server_load_file (const char *file)
99 struct GNUNET_DISK_FileHandle *gn_file;
103 if (GNUNET_OK != GNUNET_DISK_file_size (file,
104 &fsize, GNUNET_NO, GNUNET_YES))
106 text = GNUNET_malloc (fsize + 1);
108 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
109 GNUNET_DISK_PERM_USER_READ);
115 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
118 GNUNET_DISK_file_close (gn_file);
122 GNUNET_DISK_file_close (gn_file);
131 server_load_certificate (struct Plugin *plugin)
138 /* Get crypto init string from config
139 * If not present just use default values */
141 GNUNET_assert (GNUNET_OK ==
142 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
145 &plugin->crypto_init));
148 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
149 "KEY_FILE", &key_file))
151 key_file = GNUNET_strdup ("https_key.key");
155 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
156 "CERT_FILE", &cert_file))
158 GNUNET_asprintf (&cert_file, "%s", "https_cert.crt");
161 /* read key & certificates from file */
162 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
163 "Loading TLS certificate from key-file `%s' cert-file`%s'\n",
164 key_file, cert_file);
166 plugin->key = server_load_file (key_file);
167 plugin->cert = server_load_file (cert_file);
169 if ((plugin->key == NULL) || (plugin->cert == NULL))
171 struct GNUNET_OS_Process *cert_creation;
173 GNUNET_free_non_null (plugin->key);
175 GNUNET_free_non_null (plugin->cert);
179 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
180 "No usable TLS certificate found, creating certificate\n");
184 GNUNET_OS_start_process (GNUNET_NO, NULL, NULL,
185 "gnunet-transport-certificate-creation",
186 "gnunet-transport-certificate-creation",
187 key_file, cert_file, NULL);
188 if (cert_creation == NULL)
190 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
192 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
193 GNUNET_free (key_file);
194 GNUNET_free (cert_file);
196 GNUNET_free_non_null (plugin->key);
198 GNUNET_free_non_null (plugin->cert);
200 GNUNET_free_non_null (plugin->crypto_init);
201 plugin->crypto_init = NULL;
203 return GNUNET_SYSERR;
205 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
206 GNUNET_OS_process_close (cert_creation);
208 plugin->key = server_load_file (key_file);
209 plugin->cert = server_load_file (cert_file);
212 if ((plugin->key == NULL) || (plugin->cert == NULL))
214 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
216 ("No usable TLS certificate found and creating one failed!\n"),
218 GNUNET_free (key_file);
219 GNUNET_free (cert_file);
221 GNUNET_free_non_null (plugin->key);
223 GNUNET_free_non_null (plugin->cert);
225 GNUNET_free_non_null (plugin->crypto_init);
226 plugin->crypto_init = NULL;
228 return GNUNET_SYSERR;
230 GNUNET_free (key_file);
231 GNUNET_free (cert_file);
233 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
242 * Reschedule the execution of both IPv4 and IPv6 server
243 * @param plugin the plugin
244 * @param server which server to schedule v4 or v6?
245 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
250 server_reschedule (struct Plugin *plugin, struct MHD_Daemon *server, int now)
252 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
254 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
256 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
257 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
259 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
262 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
264 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
266 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
267 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
269 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
274 * Callback called by MessageStreamTokenizer when a message has arrived
275 * @param cls current session as closure
276 * @param client clien
277 * @param message the message to be forwarded to transport service
280 server_receive_mst_cb (void *cls, void *client,
281 const struct GNUNET_MessageHeader *message)
283 struct Session *s = cls;
285 GNUNET_assert (NULL != p);
286 if (GNUNET_NO == exist_session(p, s))
289 struct Plugin *plugin = s->plugin;
290 struct GNUNET_TIME_Relative delay;
292 delay = http_plugin_receive (s, &s->target, message, s, s->addr, s->addrlen);
295 GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
297 if (delay.rel_value > 0)
299 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
300 "Server: peer `%s' address `%s' next read delayed for %llu ms\n",
301 GNUNET_i2s (&s->target),
302 http_plugin_address_to_string (NULL, s->addr, s->addrlen),
308 * Callback called by MHD when it needs data to send
309 * @param cls current session
310 * @param pos position in buffer
311 * @param buf the buffer to write data to
312 * @param max max number of bytes available in buffer
313 * @return bytes written to buffer
316 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
318 struct Session *s = cls;
319 GNUNET_assert (NULL != p);
320 if (GNUNET_NO == exist_session(p, s))
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);
354 struct Plugin *plugin = s->plugin;
355 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
356 "Server: %X: sent %u bytes\n", s, bytes_read);
361 static struct ServerConnection *
362 server_lookup_session (struct Plugin *plugin,
363 struct MHD_Connection *mhd_connection, const char *url,
366 struct Session *s = NULL;
368 struct ServerConnection *sc = NULL;
369 const union MHD_ConnectionInfo *conn_info;
370 struct GNUNET_ATS_Information ats;
371 struct IPv4HttpAddress a4;
372 struct IPv6HttpAddress a6;
373 struct sockaddr_in *s4;
374 struct sockaddr_in6 *s6;
377 struct GNUNET_PeerIdentity target;
378 int check = GNUNET_NO;
380 int direction = GNUNET_SYSERR;
383 MHD_get_connection_info (mhd_connection,
384 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
385 if ((conn_info->client_addr->sa_family != AF_INET) &&
386 (conn_info->client_addr->sa_family != AF_INET6))
389 if ((strlen (&url[1]) >= 105) && (url[104] == ';'))
392 char *tagc = (char *) &url[105];
394 memcpy (&hash, &url[1], 103);
397 GNUNET_CRYPTO_hash_from_string ((const char *) &hash,
398 &(target.hashPubKey)))
400 tag = strtoul (tagc, NULL, 10);
406 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
407 direction = _RECEIVE;
408 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
417 if (check == GNUNET_NO)
420 plugin->cur_connections++;
421 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
422 "Server: New inbound connection from %s with tag %u\n",
423 GNUNET_i2s (&target), tag);
424 /* find duplicate session */
431 (0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
433 /* 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));
446 /* find semi-session */
447 t = plugin->server_semi_head;
451 /* FIXME add source address comparison */
452 if ((0 == memcmp (&t->target, &target, sizeof (struct GNUNET_PeerIdentity)))
462 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
463 "Server: Found existing semi-session for `%s'\n",
464 GNUNET_i2s (&target));
466 if ((direction == _SEND) && (t->server_send != NULL))
468 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
469 "Server: Duplicate GET session, dismissing new connection from peer `%s'\n",
470 GNUNET_i2s (&target));
476 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
477 plugin->server_semi_tail, s);
478 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
479 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
480 "Server: Found matching semi-session, merging session for peer `%s'\n",
481 GNUNET_i2s (&target));
485 if ((direction == _RECEIVE) && (t->server_recv != NULL))
487 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
488 "Server: Duplicate PUT session, dismissing new connection from peer `%s'\n",
489 GNUNET_i2s (&target));
495 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
496 plugin->server_semi_tail, s);
497 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
498 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
499 "Server: Found matching semi-session, merging session for peer `%s'\n",
500 GNUNET_i2s (&target));
505 /* create new session */
506 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
507 "Server: Creating new session for peer `%s' \n",
508 GNUNET_i2s (&target));
509 switch (conn_info->client_addr->sa_family)
512 s4 = ((struct sockaddr_in *) conn_info->client_addr);
513 a4.u4_port = s4->sin_port;
514 memcpy (&a4.ipv4_addr, &s4->sin_addr, sizeof (struct in_addr));
516 a_len = sizeof (struct IPv4HttpAddress);
517 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s4, sizeof (struct sockaddr_in));
520 s6 = ((struct sockaddr_in6 *) conn_info->client_addr);
521 a6.u6_port = s6->sin6_port;
522 memcpy (&a6.ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr));
524 a_len = sizeof (struct IPv6HttpAddress);
525 ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) s6, sizeof (struct sockaddr_in6));
531 s = create_session (plugin, &target, a, a_len, NULL, NULL);
532 s->ats_address_network_type = ats.value;
534 s->inbound = GNUNET_YES;
535 s->next_receive = GNUNET_TIME_absolute_get_zero ();
537 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
539 if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
541 GNUNET_CONTAINER_DLL_insert (plugin->server_semi_head,
542 plugin->server_semi_tail, s);
546 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
547 "Server: Invalid connection request\n");
551 sc = GNUNET_malloc (sizeof (struct ServerConnection));
552 sc->mhd_conn = mhd_connection;
553 sc->direction = direction;
555 if (direction == _SEND)
557 if (direction == _RECEIVE)
560 #if MHD_VERSION >= 0x00090E00
561 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
563 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
564 "Server: Setting timeout for %X to %u sec.\n", sc, to);
565 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
567 struct MHD_Daemon *d = NULL;
569 if (s->addrlen == sizeof (struct IPv6HttpAddress))
570 d = plugin->server_v6;
571 if (s->addrlen == sizeof (struct IPv4HttpAddress))
572 d = plugin->server_v4;
574 server_reschedule (plugin, d, GNUNET_NO);
580 * Process GET or PUT request received via MHD. For
581 * GET, queue response that will send back our pending
582 * messages. For PUT, process incoming data and send
583 * to GNUnet core. In either case, check if a session
584 * already exists and create a new one if not.
587 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
588 const char *url, const char *method, const char *version,
589 const char *upload_data, size_t * upload_data_size,
590 void **httpSessionCache)
593 struct Plugin *plugin = cls;
594 struct ServerConnection *sc = *httpSessionCache;
595 struct Session *s = NULL;
598 struct MHD_Response *response;
600 GNUNET_assert (cls != NULL);
604 sc = server_lookup_session (plugin, mhd_connection, url, method);
606 (*httpSessionCache) = sc;
610 MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
611 HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
612 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
613 MHD_destroy_response (response);
618 /* existing connection */
619 sc = (*httpSessionCache);
622 /* connection is to be disconnected */
623 if (sc->disconnect == GNUNET_YES)
625 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
627 MHD_create_response_from_data (strlen ("Thank you!"), "Thank you!",
629 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
630 MHD_destroy_response (response);
634 GNUNET_assert (s != NULL);
635 /* Check if both directions are connected */
636 if ((sc->session->server_recv == NULL) || (sc->session->server_send == NULL))
638 /* Delayed read from since not both semi-connections are connected */
642 if (sc->direction == _SEND)
645 MHD_create_response_from_callback (-1, 32 * 1024, &server_send_callback,
647 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
648 MHD_destroy_response (response);
651 if (sc->direction == _RECEIVE)
653 if (*upload_data_size == 0)
655 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
656 "Server: Peer `%s' PUT on address `%s' connected\n",
657 GNUNET_i2s (&s->target),
658 http_plugin_address_to_string (NULL, s->addr,
664 if ((*upload_data_size > 0))
666 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
667 "Server: peer `%s' PUT on address `%s' received %u bytes\n",
668 GNUNET_i2s (&s->target),
669 http_plugin_address_to_string (NULL, s->addr,
672 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
674 if ((s->next_receive.abs_value <= now.abs_value))
676 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
677 "Server: %X: PUT with %u bytes forwarded to MST\n", s,
679 if (s->msg_tk == NULL)
681 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
683 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
684 *upload_data_size, GNUNET_NO, GNUNET_NO);
686 #if MHD_VERSION >= 0x00090E00
687 int to = (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
688 struct ServerConnection *t = NULL;
690 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
691 "Server: Received %u bytes\n", *upload_data_size);
692 /* Setting timeouts for other connections */
693 if (s->server_recv != NULL)
696 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
697 "Server: Setting timeout for %X to %u sec.\n", t,
699 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
702 if (s->server_send != NULL)
705 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
706 "Server: Setting timeout for %X to %u sec.\n", t,
708 MHD_set_connection_option (t->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
711 struct MHD_Daemon *d = NULL;
713 if (s->addrlen == sizeof (struct IPv6HttpAddress))
714 d = plugin->server_v6;
715 if (s->addrlen == sizeof (struct IPv4HttpAddress))
716 d = plugin->server_v4;
717 server_reschedule (plugin, d, GNUNET_NO);
719 (*upload_data_size) = 0;
723 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
724 "Server: %X no inbound bandwidth available! Next read was delayed by %llu ms\n",
725 s, now.abs_value - s->next_receive.abs_value);
736 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
737 void **httpSessionCache)
739 struct ServerConnection *sc = *httpSessionCache;
740 struct ServerConnection *tc = NULL;
741 struct Session *s = NULL;
742 struct Session *t = NULL;
743 struct Plugin *plugin = NULL;
749 GNUNET_assert (NULL != p);
750 if (GNUNET_NO == exist_session(p, s))
754 if (sc->direction == _SEND)
757 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
758 "Server: %X peer `%s' GET on address `%s' disconnected\n",
759 s->server_send, GNUNET_i2s (&s->target),
760 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
762 s->server_send = NULL;
764 if (s->server_recv != NULL)
767 tc->disconnect = GNUNET_YES;
768 #if MHD_VERSION >= 0x00090E00
769 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
774 if (sc->direction == _RECEIVE)
776 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
777 "Server: %X peer `%s' PUT on address `%s' disconnected\n",
778 s->server_recv, GNUNET_i2s (&s->target),
779 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
780 s->server_recv = NULL;
781 if (s->server_send != NULL)
784 tc->disconnect = GNUNET_YES;
785 #if MHD_VERSION >= 0x00090E00
786 MHD_set_connection_option (sc->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
790 if (s->msg_tk != NULL)
792 GNUNET_SERVER_mst_destroy (s->msg_tk);
798 t = plugin->server_semi_head;
803 GNUNET_CONTAINER_DLL_remove (plugin->server_semi_head,
804 plugin->server_semi_tail, s);
805 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
810 plugin->cur_connections--;
812 struct MHD_Daemon *d = NULL;
814 if (s->addrlen == sizeof (struct IPv6HttpAddress))
815 d = plugin->server_v6;
816 if (s->addrlen == sizeof (struct IPv4HttpAddress))
817 d = plugin->server_v4;
818 server_reschedule (plugin, d, GNUNET_NO);
820 if ((s->server_send == NULL) && (s->server_recv == NULL))
822 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
823 "Server: peer `%s' on address `%s' disconnected\n",
824 GNUNET_i2s (&s->target),
825 http_plugin_address_to_string (NULL, s->addr, s->addrlen));
826 if (s->msg_tk != NULL)
828 GNUNET_SERVER_mst_destroy (s->msg_tk);
832 notify_session_end (s->plugin, &s->target, s);
837 server_disconnect (struct Session *s)
839 struct Plugin *plugin = s->plugin;
840 struct Session *t = plugin->head;
844 if (t->inbound == GNUNET_YES)
846 if (t->server_send != NULL)
848 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
850 if (t->server_send != NULL)
852 ((struct ServerConnection *) t->server_send)->disconnect = GNUNET_YES;
861 server_send (struct Session *s, struct HTTP_Message *msg)
863 GNUNET_CONTAINER_DLL_insert (s->msg_head, s->msg_tail, msg);
865 if (s->addrlen == sizeof (struct IPv4HttpAddress))
867 server_reschedule (s->plugin, s->plugin->server_v4, GNUNET_YES);
869 else if (s->addrlen == sizeof (struct IPv6HttpAddress))
871 server_reschedule (s->plugin, s->plugin->server_v6, GNUNET_YES);
874 return GNUNET_SYSERR;
881 * Call MHD IPv4 to process pending requests and then go back
882 * and schedule the next run.
883 * @param cls plugin as closure
884 * @param tc task context
887 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
889 struct Plugin *plugin = cls;
891 GNUNET_assert (cls != NULL);
893 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
895 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
898 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
899 "Running IPv4 server\n");
901 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
902 if (plugin->server_v4 != NULL)
903 plugin->server_v4_task =
904 server_schedule (plugin, plugin->server_v4, GNUNET_NO);
909 * Call MHD IPv6 to process pending requests and then go back
910 * and schedule the next run.
911 * @param cls plugin as closure
912 * @param tc task context
915 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
917 struct Plugin *plugin = cls;
919 GNUNET_assert (cls != NULL);
921 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
923 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
926 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
927 "Running IPv6 server\n");
929 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
930 if (plugin->server_v6 != NULL)
931 plugin->server_v6_task =
932 server_schedule (plugin, plugin->server_v6, GNUNET_NO);
936 * Function that queries MHD's select sets and
937 * starts the task waiting for them.
938 * @param plugin plugin
939 * @param daemon_handle the MHD daemon handle
940 * @return gnunet task identifier
942 static GNUNET_SCHEDULER_TaskIdentifier
943 server_schedule (struct Plugin *plugin, struct MHD_Daemon *daemon_handle,
946 GNUNET_SCHEDULER_TaskIdentifier ret;
950 struct GNUNET_NETWORK_FDSet *wrs;
951 struct GNUNET_NETWORK_FDSet *wws;
952 struct GNUNET_NETWORK_FDSet *wes;
954 unsigned long long timeout;
955 static unsigned long long last_timeout = 0;
958 struct GNUNET_TIME_Relative tv;
960 ret = GNUNET_SCHEDULER_NO_TASK;
964 wrs = GNUNET_NETWORK_fdset_create ();
965 wes = GNUNET_NETWORK_fdset_create ();
966 wws = GNUNET_NETWORK_fdset_create ();
968 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
969 haveto = MHD_get_timeout (daemon_handle, &timeout);
970 if (haveto == MHD_YES)
972 if (timeout != last_timeout)
975 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
976 "SELECT Timeout changed from %llu to %llu\n",
977 last_timeout, timeout);
979 last_timeout = timeout;
981 tv.rel_value = (uint64_t) timeout;
984 tv = GNUNET_TIME_UNIT_SECONDS;
985 /* Force immediate run, since we have outbound data to send */
986 if (now == GNUNET_YES)
987 tv = GNUNET_TIME_UNIT_MILLISECONDS;
988 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
989 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
990 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
992 if (daemon_handle == plugin->server_v4)
994 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
996 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
997 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1000 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1001 "Scheduling IPv4 server task in %llu ms\n", tv);
1004 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1006 &server_v4_run, plugin);
1008 if (daemon_handle == plugin->server_v6)
1010 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1012 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1013 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1016 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1017 "Scheduling IPv6 server task in %llu ms\n", tv);
1020 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1022 &server_v6_run, plugin);
1024 GNUNET_NETWORK_fdset_destroy (wrs);
1025 GNUNET_NETWORK_fdset_destroy (wws);
1026 GNUNET_NETWORK_fdset_destroy (wes);
1031 server_start (struct Plugin *plugin)
1033 int res = GNUNET_OK;
1034 unsigned int timeout;
1036 GNUNET_assert (NULL != plugin);
1039 res = server_load_certificate (plugin);
1040 if (res == GNUNET_SYSERR)
1042 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1043 "Could not load or create server certificate! Loading plugin failed!\n");
1049 #if MHD_VERSION >= 0x00090E00
1050 timeout = HTTP_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
1051 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1052 "MHD can set timeout per connection! Default time out %u sec.\n",
1055 timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000;
1056 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1057 "MHD cannot set timeout per connection! Default time out %u sec.\n",
1060 plugin->server_v4 = NULL;
1061 if (plugin->ipv4 == GNUNET_YES)
1063 plugin->server_v4 = MHD_start_daemon (
1070 MHD_NO_FLAG, plugin->port,
1071 &server_accept_cb, plugin,
1072 &server_access_cb, plugin,
1073 MHD_OPTION_SOCK_ADDR,
1074 (struct sockaddr_in *)
1075 plugin->server_addr_v4,
1076 MHD_OPTION_CONNECTION_LIMIT,
1078 plugin->max_connections,
1080 MHD_OPTION_HTTPS_PRIORITIES,
1081 plugin->crypto_init,
1082 MHD_OPTION_HTTPS_MEM_KEY,
1084 MHD_OPTION_HTTPS_MEM_CERT,
1087 MHD_OPTION_CONNECTION_TIMEOUT,
1089 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1091 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1092 MHD_OPTION_NOTIFY_COMPLETED,
1093 &server_disconnect_cb, plugin,
1094 MHD_OPTION_EXTERNAL_LOGGER,
1095 server_log, NULL, MHD_OPTION_END);
1097 plugin->server_v6 = NULL;
1098 if (plugin->ipv6 == GNUNET_YES)
1100 plugin->server_v6 = MHD_start_daemon (
1107 MHD_USE_IPv6, plugin->port,
1108 &server_accept_cb, plugin,
1109 &server_access_cb, plugin,
1110 MHD_OPTION_SOCK_ADDR,
1111 (struct sockaddr_in6 *)
1112 plugin->server_addr_v6,
1113 MHD_OPTION_CONNECTION_LIMIT,
1115 plugin->max_connections,
1117 MHD_OPTION_HTTPS_PRIORITIES,
1118 plugin->crypto_init,
1119 MHD_OPTION_HTTPS_MEM_KEY,
1121 MHD_OPTION_HTTPS_MEM_CERT,
1124 MHD_OPTION_CONNECTION_TIMEOUT,
1126 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
1128 GNUNET_SERVER_MAX_MESSAGE_SIZE),
1129 MHD_OPTION_NOTIFY_COMPLETED,
1130 &server_disconnect_cb, plugin,
1131 MHD_OPTION_EXTERNAL_LOGGER,
1132 server_log, NULL, MHD_OPTION_END);
1136 if ((plugin->ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
1138 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1139 "Failed to start %s IPv4 server component on port %u\n",
1140 plugin->name, plugin->port);
1141 return GNUNET_SYSERR;
1143 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1145 if ((plugin->ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
1147 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1148 "Failed to start %s IPv6 server component on port %u\n",
1149 plugin->name, plugin->port);
1150 return GNUNET_SYSERR;
1152 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1156 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1157 "%s server component started on port %u\n", plugin->name,
1164 server_stop (struct Plugin *plugin)
1166 struct Session *s = NULL;
1167 struct Session *t = NULL;
1171 struct MHD_Daemon *server_v4_tmp = plugin->server_v4;
1173 plugin->server_v4 = NULL;
1174 struct MHD_Daemon *server_v6_tmp = plugin->server_v6;
1176 plugin->server_v6 = NULL;
1178 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1180 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1181 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1184 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1186 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1187 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1190 if (server_v6_tmp != NULL)
1192 MHD_stop_daemon (server_v4_tmp);
1194 if (server_v6_tmp != NULL)
1196 MHD_stop_daemon (server_v6_tmp);
1199 /* cleaning up semi-sessions never propagated */
1200 s = plugin->server_semi_head;
1204 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1205 "Deleting semi-sessions %p\n", s);
1208 struct HTTP_Message *msg = s->msg_head;
1209 struct HTTP_Message *tmp = NULL;
1215 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1216 if (msg->transmit_cont != NULL)
1218 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR);
1229 GNUNET_free_non_null (plugin->crypto_init);
1230 GNUNET_free_non_null (plugin->cert);
1231 GNUNET_free_non_null (plugin->key);
1235 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1236 "%s server component stopped\n", plugin->name);
1242 /* end of plugin_transport_http.c */