2 This file is part of GNUnet
3 (C) 2002-2013 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.
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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_server.c
23 * @brief HTTP/S server transport plugin
24 * @author Matthias Wachs
27 #include "gnunet_util_lib.h"
28 #include "gnunet_statistics_service.h"
29 #include "gnunet_transport_plugin.h"
30 #include "gnunet_nat_lib.h"
31 #include "plugin_transport_http_common.h"
32 #include <microhttpd.h>
37 #define PLUGIN_NAME "https_server"
38 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_server_init
39 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_server_done
41 #define PLUGIN_NAME "http_server"
42 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_server_init
43 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_server_done
46 #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>"
52 * Enable output for debbuging URL's of incoming requests
54 #define DEBUG_URL_PARSE GNUNET_NO
58 * Encapsulation of all of the state of the plugin.
63 * Session handle for connections.
68 * Stored in a linked list.
73 * Stored in a linked list.
78 * To whom are we talking to (set to our identity
79 * if we are still waiting for the welcome message)
81 struct GNUNET_PeerIdentity target;
84 * Pointer to the global plugin struct.
86 struct HTTP_Server_Plugin *plugin;
89 * next pointer for double linked list
91 struct HTTP_Message *msg_head;
94 * previous pointer for double linked list
96 struct HTTP_Message *msg_tail;
99 * Message stream tokenizer for incoming data
101 struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
106 struct ServerConnection *server_recv;
111 struct ServerConnection *server_send;
124 * Unique HTTP/S connection tag for this connection
129 * ATS network type in NBO
131 uint32_t ats_address_network_type;
134 * Was session given to transport service?
139 * Did we immediately end the session in disconnect_cb
144 * Are incoming connection established at the moment
146 int connect_in_progress;
149 * Absolute time when to receive data again
150 * Used for receive throttling
152 struct GNUNET_TIME_Absolute next_receive;
155 * Session timeout task
157 GNUNET_SCHEDULER_TaskIdentifier timeout_task;
161 struct ServerConnection
169 * Should this connection get disconnected? GNUNET_YES/NO
174 * For PUT connections: Is this the first or last callback with size 0
179 * The session this server connection belongs to
181 struct Session *session;
186 struct MHD_Connection *mhd_conn;
191 struct MHD_Daemon *mhd_daemon;
196 * Encapsulation of all of the state of the plugin.
198 struct HTTP_Server_Plugin
203 struct GNUNET_TRANSPORT_PluginEnvironment *env;
206 * Linked list head of open sessions.
208 struct Session *head;
211 * Linked list tail of open sessions.
213 struct Session *tail;
226 * My options to be included in the address
233 char *external_hostname;
236 * Verify external address
238 int verify_external_hostname;
241 * Maximum number of sockets the plugin can use
242 * Each http inbound /outbound connections are two connections
244 unsigned int max_connections;
247 * Current number of sockets the plugin can use
248 * Each http inbound /outbound connections are two connections
250 unsigned int cur_connections;
253 * Did we immediately end the session in disconnect_cb
263 * External hostname the plugin can be connected to, can be different to
264 * the host's FQDN, used e.g. for reverse proxying
266 struct HttpAddress *ext_addr;
269 * Notify transport only about external address
271 unsigned int external_only;
274 * External address length
294 * Task calling transport service about external address
296 GNUNET_SCHEDULER_TaskIdentifier notify_ext_task;
299 * NAT handle & address management
301 struct GNUNET_NAT_Handle *nat;
304 * List of own addresses
308 * IPv4 addresses DLL head
310 struct HttpAddressWrapper *addr_head;
313 * IPv4 addresses DLL tail
315 struct HttpAddressWrapper *addr_tail;
318 * IPv4 server socket to bind to
320 struct sockaddr_in *server_addr_v4;
323 * IPv6 server socket to bind to
325 struct sockaddr_in6 *server_addr_v6;
330 GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
335 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
338 * The IPv4 server is scheduled to run asap
340 int server_v4_immediately;
343 * The IPv6 server is scheduled to run asap
345 int server_v6_immediately;
350 struct MHD_Daemon *server_v4;
355 struct MHD_Daemon *server_v6;
363 * Use RC4-128 instead of AES:
364 * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
384 * Wrapper to manage addresses
386 struct HttpAddressWrapper
391 struct HttpAddressWrapper *next;
394 * Linked list previous
396 struct HttpAddressWrapper *prev;
398 struct HttpAddress *address;
405 * Message to send using http
410 * next pointer for double linked list
412 struct HTTP_Message *next;
415 * previous pointer for double linked list
417 struct HTTP_Message *prev;
420 * buffer containing data to send
425 * amount of data already sent
435 * HTTP/S specific overhead
440 * Continuation function to call once the transmission buffer
441 * has again space available. NULL if there is no
442 * continuation to call.
444 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
447 * Closure for transmit_cont.
449 void *transmit_cont_cls;
454 * Start session timeout for session s
455 * @param s the session
458 server_start_session_timeout (struct Session *s);
462 * Increment session timeout due to activity for session s
463 * @param s the session
466 server_reschedule_session_timeout (struct Session *s);
470 * Cancel timeout for session s
471 * @param s the session
474 server_stop_session_timeout (struct Session *s);
478 * Disconnect session @a s
480 * @param cls closure with the `struct HTTP_Server_Plugin`
481 * @param s the session
482 * @return #GNUNET_OK on success
485 http_server_plugin_disconnect_session (void *cls,
490 * Does session s exist?
492 * @param plugin the plugin handle
493 * @param s the session
494 * @return #GNUNET_YES on success, #GNUNET_NO on error
497 server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s);
501 * Reschedule the execution of both IPv4 and IPv6 server
502 * @param plugin the plugin
503 * @param server which server to schedule v4 or v6?
504 * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
508 server_reschedule (struct HTTP_Server_Plugin *plugin,
509 struct MHD_Daemon *server,
514 * Function that can be used by the transport service to transmit
515 * a message using the plugin. Note that in the case of a
516 * peer disconnecting, the continuation MUST be called
517 * prior to the disconnect notification itself. This function
518 * will be called with this peer's HELLO message to initiate
519 * a fresh connection to another peer.
522 * @param session which session must be used
523 * @param msgbuf the message to transmit
524 * @param msgbuf_size number of bytes in @a msgbuf
525 * @param priority how important is the message (most plugins will
526 * ignore message priority and just FIFO)
527 * @param to how long to wait at most for the transmission (does not
528 * require plugins to discard the message after the timeout,
529 * just advisory for the desired delay; most plugins will ignore
531 * @param cont continuation to call once the message has
532 * been transmitted (or if the transport is ready
533 * for the next transmission call; or if the
534 * peer disconnected...); can be NULL
535 * @param cont_cls closure for @a cont
536 * @return number of bytes used (on the physical network, with overheads);
537 * -1 on hard errors (i.e. address invalid); 0 is a legal value
538 * and does NOT mean that the message was not transmitted (DV)
541 http_server_plugin_send (void *cls,
542 struct Session *session,
543 const char *msgbuf, size_t msgbuf_size,
544 unsigned int priority,
545 struct GNUNET_TIME_Relative to,
546 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
548 struct HTTP_Server_Plugin *plugin = cls;
549 struct HTTP_Message *msg;
553 GNUNET_assert (plugin != NULL);
554 GNUNET_assert (session != NULL);
556 if (GNUNET_NO == server_exist_session (plugin, session))
559 return GNUNET_SYSERR;
561 if (NULL == session->server_send)
563 if (GNUNET_NO == session->connect_in_progress)
565 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, session->plugin->name,
566 "Session %p/connection %p: Sending message with %u bytes to peer `%s' with FAILED\n",
567 session, session->server_send,
568 msgbuf_size, GNUNET_i2s (&session->target));
570 return GNUNET_SYSERR;
575 if (GNUNET_YES == session->server_send->disconnect)
576 return GNUNET_SYSERR;
580 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, session->plugin->name,
581 "Session %p/connection %p: Sending message with %u to peer `%s' with \n",
582 session, session->server_send,
583 msgbuf_size, GNUNET_i2s (&session->target));
585 /* create new message and schedule */
586 bytes_sent = sizeof (struct HTTP_Message) + msgbuf_size;
587 msg = GNUNET_malloc (bytes_sent);
589 msg->size = msgbuf_size;
591 msg->buf = (char *) &msg[1];
592 msg->transmit_cont = cont;
593 msg->transmit_cont_cls = cont_cls;
594 memcpy (msg->buf, msgbuf, msgbuf_size);
596 GNUNET_CONTAINER_DLL_insert_tail (session->msg_head, session->msg_tail, msg);
598 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", plugin->protocol);
599 GNUNET_STATISTICS_update (plugin->env->stats,
600 stat_txt, msgbuf_size, GNUNET_NO);
601 GNUNET_free (stat_txt);
603 if (NULL != session->server_send)
605 server_reschedule (session->plugin,
606 session->server_send->mhd_daemon,
614 * Function that can be used to force the plugin to disconnect
615 * from the given peer and cancel all previous transmissions
616 * (and their continuationc).
619 * @param target peer from which to disconnect
622 http_server_plugin_disconnect_peer (void *cls,
623 const struct GNUNET_PeerIdentity *target)
625 struct HTTP_Server_Plugin *plugin = cls;
626 struct Session *next;
629 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
630 "Transport tells me to disconnect `%s'\n",
631 GNUNET_i2s (target));
633 while (NULL != (pos = next))
636 if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
638 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
639 "Disconnecting session %p to `%s'\n",
640 pos, GNUNET_i2s (target));
641 http_server_plugin_disconnect_session (plugin, pos);
648 * Another peer has suggested an address for this
649 * peer and transport plugin. Check that this could be a valid
650 * address. If so, consider adding it to the list
654 * @param addr pointer to the address
655 * @param addrlen length of @a addr
656 * @return #GNUNET_OK if this is a plausible address for this peer
660 http_server_plugin_address_suggested (void *cls,
664 struct HTTP_Server_Plugin *plugin = cls;
665 struct HttpAddressWrapper *next;
666 struct HttpAddressWrapper *pos;
667 const struct HttpAddress *haddr = addr;
669 if ((NULL != plugin->ext_addr) &&
670 GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
672 plugin->ext_addr_len)))
674 /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
675 if ((ntohl (haddr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
676 (plugin->options & HTTP_OPTIONS_VERIFY_CERTIFICATE))
677 return GNUNET_NO; /* VERIFY option not set as required! */
680 next = plugin->addr_head;
681 while (NULL != (pos = next))
684 if (GNUNET_YES == (http_common_cmp_addresses(addr,
695 * Creates a new outbound session the transport
696 * service will use to send data to the peer
698 * Since HTTP/S server cannot create sessions, always return NULL
700 * @param cls the plugin
701 * @param address the address
702 * @return always NULL
704 static struct Session *
705 http_server_plugin_get_session (void *cls,
706 const struct GNUNET_HELLO_Address *address)
713 * Deleting the session
714 * Must not be used afterwards
716 * @param cls closure with the `struct HTTP_ServerPlugin`
717 * @param s the session to delete
718 * @return #GNUNET_OK on success
721 server_delete_session (void *cls,
724 struct HTTP_Server_Plugin *plugin = cls;
725 struct HTTP_Message *msg;
726 struct HTTP_Message *tmp;
728 server_stop_session_timeout(s);
729 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
734 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
735 if (NULL != msg->transmit_cont)
736 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
737 msg->size, msg->pos + msg->overhead);
741 if (NULL != s->msg_tk)
743 GNUNET_SERVER_mst_destroy (s->msg_tk);
746 GNUNET_free (s->addr);
747 GNUNET_free_non_null (s->server_recv);
748 GNUNET_free_non_null (s->server_send);
749 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
751 "Session %p destroyed\n", s);
758 * Cancel timeout for session s
760 * @param s the session
763 server_stop_session_timeout (struct Session *s)
765 GNUNET_assert (NULL != s);
767 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
769 GNUNET_SCHEDULER_cancel (s->timeout_task);
770 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
771 GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
777 * Function that queries MHD's select sets and
778 * starts the task waiting for them.
779 * @param plugin plugin
780 * @param daemon_handle the MHD daemon handle
781 * @param now schedule immediately
782 * @return task identifier
784 static GNUNET_SCHEDULER_TaskIdentifier
785 server_schedule (struct HTTP_Server_Plugin *plugin,
786 struct MHD_Daemon *daemon_handle,
791 * Reschedule the execution of both IPv4 and IPv6 server
792 * @param plugin the plugin
793 * @param server which server to schedule v4 or v6?
794 * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
798 server_reschedule (struct HTTP_Server_Plugin *plugin,
799 struct MHD_Daemon *server,
802 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
804 if (GNUNET_YES == plugin->server_v4_immediately)
805 return; /* No rescheduling, server will run asap */
807 if (GNUNET_YES == now)
808 plugin->server_v4_immediately = GNUNET_YES;
810 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
812 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
813 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
815 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
818 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
820 if (GNUNET_YES == plugin->server_v6_immediately)
821 return; /* No rescheduling, server will run asap */
823 if (GNUNET_YES == now)
824 plugin->server_v6_immediately = GNUNET_YES;
826 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
828 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
829 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
831 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
837 * Disconnect session @a s
839 * @param cls closure with the `struct HTTP_Server_Plugin`
840 * @param s the session
841 * @return #GNUNET_OK on success
844 http_server_plugin_disconnect_session (void *cls,
847 struct HTTP_Server_Plugin *plugin = cls;
848 struct ServerConnection * send;
849 struct ServerConnection * recv;
851 if (GNUNET_NO == server_exist_session (plugin, s))
854 return GNUNET_SYSERR;
857 send = (struct ServerConnection *) s->server_send;
858 if (s->server_send != NULL)
860 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
861 "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
862 s, s->server_send, GNUNET_i2s (&s->target));
864 send->disconnect = GNUNET_YES;
865 MHD_set_connection_option (send->mhd_conn,
866 MHD_CONNECTION_OPTION_TIMEOUT,
868 server_reschedule (s->plugin, send->mhd_daemon, GNUNET_YES);
871 recv = (struct ServerConnection *) s->server_recv;
874 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
875 "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
876 s, s->server_recv, GNUNET_i2s (&s->target));
878 recv->disconnect = GNUNET_YES;
879 MHD_set_connection_option (recv->mhd_conn,
880 MHD_CONNECTION_OPTION_TIMEOUT,
882 server_reschedule (s->plugin, recv->mhd_daemon, GNUNET_YES);
889 * Function that is called to get the keepalive factor.
890 * GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
891 * calculate the interval between keepalive packets.
893 * @param cls closure with the `struct Plugin`
894 * @return keepalive factor
897 http_server_query_keepalive_factor (void *cls)
903 http_server_plugin_update_session_timeout (void *cls,
904 const struct GNUNET_PeerIdentity *peer,
905 struct Session *session)
907 struct HTTP_Server_Plugin *plugin = cls;
909 if (GNUNET_NO == server_exist_session (plugin, session))
912 server_reschedule_session_timeout (session);
917 * Tell MHD that the connection should timeout after @a to seconds.
919 * @param plugin our plugin
920 * @param s session for which the timeout changes
921 * @param to timeout in seconds
924 server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
928 /* Setting timeouts for other connections */
929 if (NULL != s->server_recv)
931 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
932 "Setting timeout for %p to %u sec.\n",
934 MHD_set_connection_option (s->server_recv->mhd_conn,
935 MHD_CONNECTION_OPTION_TIMEOUT,
937 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
939 if (NULL != s->server_send)
941 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
942 "Setting timeout for %p to %u sec.\n",
944 MHD_set_connection_option (s->server_send->mhd_conn,
945 MHD_CONNECTION_OPTION_TIMEOUT,
947 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
953 * Parse incoming URL for tag and target
955 * @param plugin plugin
956 * @param url incoming url
957 * @param target where to store the target
958 * @param tag where to store the tag
959 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
962 server_parse_url (struct HTTP_Server_Plugin *plugin,
964 struct GNUNET_PeerIdentity *target,
967 char * tag_start = NULL;
968 char * tag_end = NULL;
969 char * target_start = NULL;
970 char * separator = NULL;
971 unsigned int hash_length;
972 unsigned long int ctag;
975 * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
980 return GNUNET_SYSERR;
985 separator = strrchr (url, ';');
987 if (NULL == separator)
989 if (DEBUG_URL_PARSE) GNUNET_break (0);
990 return GNUNET_SYSERR;
992 tag_start = separator + 1;
994 if (strlen (tag_start) == 0)
996 /* No tag after separator */
997 if (DEBUG_URL_PARSE) GNUNET_break (0);
998 return GNUNET_SYSERR;
1000 ctag = strtoul (tag_start, &tag_end, 10);
1003 /* tag == 0 , invalid */
1004 if (DEBUG_URL_PARSE) GNUNET_break (0);
1005 return GNUNET_SYSERR;
1007 if ((ctag == ULONG_MAX) && (ERANGE == errno))
1009 /* out of range: > ULONG_MAX */
1010 if (DEBUG_URL_PARSE) GNUNET_break (0);
1011 return GNUNET_SYSERR;
1013 if (ctag > UINT32_MAX)
1015 /* out of range: > UINT32_MAX */
1016 if (DEBUG_URL_PARSE) GNUNET_break (0);
1017 return GNUNET_SYSERR;
1019 (*tag) = (uint32_t) ctag;
1020 if (NULL == tag_end)
1022 /* no char after tag */
1023 if (DEBUG_URL_PARSE) GNUNET_break (0);
1024 return GNUNET_SYSERR;
1026 if (url[strlen(url)] != tag_end[0])
1028 /* there are more not converted chars after tag */
1029 if (DEBUG_URL_PARSE) GNUNET_break (0);
1030 return GNUNET_SYSERR;
1032 if (DEBUG_URL_PARSE)
1033 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1034 "Found tag `%u' in url\n", (*tag));
1036 /* convert peer id */
1037 target_start = strrchr (url, '/');
1038 if (NULL == target_start)
1040 /* no leading '/' */
1041 target_start = (char *) url;
1044 hash_length = separator - target_start;
1045 if (hash_length != plugin->peer_id_length)
1047 /* no char after tag */
1048 if (DEBUG_URL_PARSE) GNUNET_break (0);
1049 return GNUNET_SYSERR;
1052 GNUNET_CRYPTO_eddsa_public_key_from_string (target_start,
1054 &target->public_key))
1056 /* hash conversion failed */
1057 if (DEBUG_URL_PARSE) GNUNET_break (0);
1058 return GNUNET_SYSERR;
1060 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1062 "Found target `%s' in URL\n",
1063 GNUNET_i2s_full (target));
1069 * Lookup a mhd connection and create one if none is found
1071 * @param plugin the plugin handle
1072 * @param mhd_connection the incoming mhd_connection
1073 * @param url incoming requested URL
1074 * @param method PUT or GET
1075 * @return the server connecetion
1077 static struct ServerConnection *
1078 server_lookup_connection (struct HTTP_Server_Plugin *plugin,
1079 struct MHD_Connection *mhd_connection, const char *url,
1082 struct Session *s = NULL;
1083 struct ServerConnection *sc = NULL;
1084 const union MHD_ConnectionInfo *conn_info;
1085 struct GNUNET_ATS_Information ats;
1086 struct HttpAddress *addr;
1088 struct GNUNET_PeerIdentity target;
1090 int direction = GNUNET_SYSERR;
1093 conn_info = MHD_get_connection_info (mhd_connection,
1094 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
1095 if ((conn_info->client_addr->sa_family != AF_INET) &&
1096 (conn_info->client_addr->sa_family != AF_INET6))
1098 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1099 "New %s connection from %s\n", method, url);
1101 if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
1103 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1104 "Invalid url %s\n", url);
1107 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1108 direction = _RECEIVE;
1109 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
1113 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1114 "Invalid method %s connection from %s\n", method, url);
1118 plugin->cur_connections++;
1119 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1120 "New %s connection from %s with tag %u (%u of %u)\n",
1122 GNUNET_i2s (&target), tag,
1123 plugin->cur_connections, plugin->max_connections);
1124 /* find duplicate session */
1128 if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
1135 if ((_RECEIVE == direction) && (NULL != s->server_recv))
1137 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1138 "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
1139 GNUNET_i2s (&target),
1144 if ((_SEND == direction) && (NULL != s->server_send))
1146 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1147 "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
1148 GNUNET_i2s (&target),
1155 /* create new session */
1156 switch (conn_info->client_addr->sa_family)
1159 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
1160 addr_len = http_common_address_get_size (addr);
1161 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
1164 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
1165 addr_len = http_common_address_get_size (addr);
1166 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
1169 /* external host name */
1170 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1171 ats.type = htonl (GNUNET_ATS_NET_WAN);
1175 s = GNUNET_new (struct Session);
1176 memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
1179 s->addrlen = addr_len;
1180 s->ats_address_network_type = ats.value;
1181 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
1183 s->server_recv = NULL;
1184 s->server_send = NULL;
1185 s->session_passed = GNUNET_NO;
1186 s->session_ended = GNUNET_NO;
1187 s->connect_in_progress = GNUNET_YES;
1188 server_start_session_timeout(s);
1189 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1191 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1192 "Creating new session %p for peer `%s' connecting from `%s'\n",
1193 s, GNUNET_i2s (&target),
1194 http_common_plugin_address_to_string (NULL,
1198 sc = GNUNET_new (struct ServerConnection);
1199 if (conn_info->client_addr->sa_family == AF_INET)
1200 sc->mhd_daemon = plugin->server_v4;
1201 if (conn_info->client_addr->sa_family == AF_INET6)
1202 sc->mhd_daemon = plugin->server_v6;
1203 sc->mhd_conn = mhd_connection;
1204 sc->direction = direction;
1205 sc->connected = GNUNET_NO;
1207 if (direction == _SEND)
1208 s->server_send = sc;
1209 if (direction == _RECEIVE)
1210 s->server_recv = sc;
1212 if ((NULL != s->server_send) && (NULL != s->server_recv))
1214 s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
1215 plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
1218 if ((NULL == s->server_recv) || (NULL == s->server_send))
1220 to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1221 MHD_set_connection_option (mhd_connection,
1222 MHD_CONNECTION_OPTION_TIMEOUT, to);
1223 server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
1227 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1228 "Session %p for peer `%s' fully connected\n",
1229 s, GNUNET_i2s (&target));
1230 to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1231 server_mhd_connection_timeout (plugin, s, to);
1234 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1235 "Setting timeout for %p to %u sec.\n", sc, to);
1241 * Lookup a session for a server connection
1243 * @param plugin the plugin
1244 * @param sc the server connection
1245 * @return the session found or NULL
1247 static struct Session *
1248 server_lookup_session (struct HTTP_Server_Plugin *plugin,
1249 struct ServerConnection * sc)
1253 for (s = plugin->head; NULL != s; s = s->next)
1254 if ((s->server_recv == sc) || (s->server_send == sc))
1261 server_exist_session (struct HTTP_Server_Plugin *plugin,
1264 struct Session * head;
1266 for (head = plugin->head; head != NULL; head = head->next)
1274 * Callback called by MHD when it needs data to send
1276 * @param cls current session
1277 * @param pos position in buffer
1278 * @param buf the buffer to write data to
1279 * @param max max number of bytes available in buffer
1280 * @return bytes written to buffer
1283 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
1285 struct Session *s = cls;
1286 ssize_t bytes_read = 0;
1287 struct HTTP_Message *msg;
1290 if (GNUNET_NO == server_exist_session (s->plugin, s))
1296 bytes_read = GNUNET_MIN (msg->size - msg->pos,
1298 memcpy (buf, &msg->buf[msg->pos], bytes_read);
1299 msg->pos += bytes_read;
1301 /* removing message */
1302 if (msg->pos == msg->size)
1304 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1305 if (NULL != msg->transmit_cont)
1306 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
1307 msg->size, msg->size + msg->overhead);
1313 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1314 "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
1315 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers",
1316 s->plugin->protocol);
1317 GNUNET_STATISTICS_update (s->plugin->env->stats,
1318 stat_txt, -bytes_read, GNUNET_NO);
1319 GNUNET_free (stat_txt);
1320 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server",
1321 s->plugin->protocol);
1322 GNUNET_STATISTICS_update (s->plugin->env->stats,
1323 stat_txt, bytes_read, GNUNET_NO);
1324 GNUNET_free (stat_txt);
1331 * Callback called by MessageStreamTokenizer when a message has arrived
1333 * @param cls current session as closure
1334 * @param client client
1335 * @param message the message to be forwarded to transport service
1336 * @return #GNUNET_OK
1339 server_receive_mst_cb (void *cls, void *client,
1340 const struct GNUNET_MessageHeader *message)
1342 struct Session *s = cls;
1343 struct HTTP_Server_Plugin *plugin = s->plugin;
1344 struct GNUNET_ATS_Information atsi;
1345 struct GNUNET_TIME_Relative delay;
1348 if (GNUNET_NO == server_exist_session (s->plugin, s))
1352 atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1353 atsi.value = s->ats_address_network_type;
1354 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
1357 delay = plugin->env->receive (plugin->env->cls,
1362 plugin->env->update_address_metrics (plugin->env->cls,
1364 NULL, 0, s, &atsi, 1);
1366 GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
1367 GNUNET_STATISTICS_update (plugin->env->stats,
1368 stat_txt, ntohs (message->size), GNUNET_NO);
1369 GNUNET_free (stat_txt);
1371 s->session_passed = GNUNET_YES;
1372 s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
1373 if (delay.rel_value_us > 0)
1375 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1376 "Peer `%s' address `%s' next read delayed for %s\n",
1377 GNUNET_i2s (&s->target),
1378 http_common_plugin_address_to_string (NULL,
1380 s->addr, s->addrlen),
1381 GNUNET_STRINGS_relative_time_to_string (delay,
1384 server_reschedule_session_timeout (s);
1390 * MHD callback for a new incoming connection
1392 * @param cls the plugin handle
1393 * @param mhd_connection the mhd connection
1394 * @param url the requested URL
1395 * @param method GET or PUT
1396 * @param version HTTP version
1397 * @param upload_data upload data
1398 * @param upload_data_size sizeof upload data
1399 * @param httpSessionCache the session cache to remember the connection
1400 * @return MHD_YES if connection is accepted, MHD_NO on reject
1403 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
1404 const char *url, const char *method, const char *version,
1405 const char *upload_data, size_t * upload_data_size,
1406 void **httpSessionCache)
1408 struct HTTP_Server_Plugin *plugin = cls;
1411 struct ServerConnection *sc = *httpSessionCache;
1413 struct MHD_Response *response;
1415 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1416 _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
1418 plugin->cur_connections, plugin->max_connections,
1419 method, version, url, (*upload_data_size));
1421 GNUNET_assert (cls != NULL);
1424 /* new connection */
1425 sc = server_lookup_connection (plugin, mhd_connection, url, method);
1428 (*httpSessionCache) = sc;
1432 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
1433 MHD_add_response_header (response,
1434 MHD_HTTP_HEADER_CONTENT_TYPE,
1436 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1437 MHD_destroy_response (response);
1443 /* 'old' connection */
1444 if (NULL == server_lookup_session (plugin, sc))
1446 /* Session was already disconnected */
1451 /* existing connection */
1452 sc = (*httpSessionCache);
1454 GNUNET_assert (NULL != s);
1455 /* connection is to be disconnected */
1456 if (sc->disconnect == GNUNET_YES)
1458 /* Sent HTTP/1.1: 200 OK as response */
1459 response = MHD_create_response_from_data (strlen ("Thank you!"),
1462 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1463 MHD_destroy_response (response);
1466 GNUNET_assert (s != NULL);
1468 if (sc->direction == _SEND)
1470 response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1472 &server_send_callback, s,
1474 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1475 MHD_destroy_response (response);
1478 if (sc->direction == _RECEIVE)
1480 if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
1482 /* (*upload_data_size == 0) first callback when header are passed */
1483 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1484 "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
1486 GNUNET_i2s (&s->target),
1487 http_common_plugin_address_to_string (NULL,
1491 sc->connected = GNUNET_YES;
1494 else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
1496 /* (*upload_data_size == 0) when upload is complete */
1497 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1498 "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
1500 GNUNET_i2s (&s->target),
1501 http_common_plugin_address_to_string (NULL,
1505 sc->connected = GNUNET_NO;
1506 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
1507 response = MHD_create_response_from_data (strlen ("Thank you!"),
1510 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1511 MHD_destroy_response (response);
1514 else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
1516 /* (*upload_data_size > 0) for every segment received */
1517 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1518 "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
1520 GNUNET_i2s (&s->target),
1521 http_common_plugin_address_to_string (NULL,
1526 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
1528 if ((s->next_receive.abs_value_us <= now.abs_value_us))
1530 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1531 "PUT with %u bytes forwarded to MST\n",
1533 if (s->msg_tk == NULL)
1535 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
1537 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
1538 *upload_data_size, GNUNET_NO, GNUNET_NO);
1539 server_mhd_connection_timeout (plugin, s,
1540 GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1541 (*upload_data_size) = 0;
1545 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1546 "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
1548 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (s->next_receive),
1564 * Callback from MHD when a connection disconnects
1566 * @param cls closure with the `struct HTTP_Server_Plugin *`
1567 * @param connection the disconnected MHD connection
1568 * @param httpSessionCache the pointer to distinguish
1571 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
1572 void **httpSessionCache)
1574 struct HTTP_Server_Plugin *plugin = cls;
1575 struct ServerConnection *sc = *httpSessionCache;
1576 struct Session *s = NULL;
1577 struct Session *t = NULL;
1579 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1581 "Disconnect for connection %p \n", sc);
1586 if (NULL == (s = server_lookup_session (plugin, sc)))
1588 for (t = plugin->head; t != NULL; t = t->next)
1594 if (sc->direction == _SEND)
1596 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1597 "Peer `%s' connection %p, GET on address `%s' disconnected\n",
1598 GNUNET_i2s (&s->target), s->server_send,
1599 http_common_plugin_address_to_string (NULL,
1601 s->addr, s->addrlen));
1602 s->server_send = NULL;
1603 if (NULL != (s->server_recv))
1605 s->server_recv->disconnect = GNUNET_YES;
1606 GNUNET_assert (NULL != s->server_recv->mhd_conn);
1607 #if MHD_VERSION >= 0x00090E00
1608 MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1611 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
1614 if (sc->direction == _RECEIVE)
1616 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1617 "Peer `%s' connection %p PUT on address `%s' disconnected\n",
1618 GNUNET_i2s (&s->target), s->server_recv,
1619 http_common_plugin_address_to_string (NULL,
1621 s->addr, s->addrlen));
1622 s->server_recv = NULL;
1623 /* Do not terminate session when PUT disconnects
1624 if (NULL != (s->server_send))
1626 s->server_send->disconnect = GNUNET_YES;
1627 GNUNET_assert (NULL != s->server_send->mhd_conn);
1628 #if MHD_VERSION >= 0x00090E00
1629 MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1632 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
1634 if (s->msg_tk != NULL)
1636 GNUNET_SERVER_mst_destroy (s->msg_tk);
1642 plugin->cur_connections--;
1644 if ((s->server_send == NULL) && (s->server_recv == NULL))
1646 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1647 "Peer `%s' on address `%s' disconnected\n",
1648 GNUNET_i2s (&s->target),
1649 http_common_plugin_address_to_string (NULL,
1651 s->addr, s->addrlen));
1653 if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
1655 /* Notify transport immediately that this session is invalid */
1656 s->session_ended = GNUNET_YES;
1657 plugin->env->session_end (plugin->env->cls, &s->target, s);
1659 server_delete_session (plugin, s);
1665 * Check if incoming connection is accepted.
1667 * @param cls plugin as closure
1668 * @param addr address of incoming connection
1669 * @param addr_len address length of incoming connection
1670 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
1673 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
1675 struct HTTP_Server_Plugin *plugin = cls;
1677 if (plugin->cur_connections <= plugin->max_connections)
1679 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1680 _("Accepting connection (%u of %u) from `%s'\n"),
1681 plugin->cur_connections, plugin->max_connections,
1682 GNUNET_a2s (addr, addr_len));
1687 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1688 _("Server reached maximum number connections (%u), rejecting new connection\n"),
1689 plugin->max_connections);
1696 server_log (void *arg, const char *fmt, va_list ap)
1700 vsnprintf (text, sizeof (text), fmt, ap);
1702 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
1707 * Call MHD IPv4 to process pending requests and then go back
1708 * and schedule the next run.
1709 * @param cls plugin as closure
1710 * @param tc task context
1713 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1715 struct HTTP_Server_Plugin *plugin = cls;
1717 GNUNET_assert (cls != NULL);
1719 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1720 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1723 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1724 "Running IPv4 server\n");
1726 plugin->server_v4_immediately = GNUNET_NO;
1727 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
1728 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1733 * Call MHD IPv6 to process pending requests and then go back
1734 * and schedule the next run.
1735 * @param cls plugin as closure
1736 * @param tc task context
1739 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1741 struct HTTP_Server_Plugin *plugin = cls;
1743 GNUNET_assert (cls != NULL);
1744 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1745 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1748 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1749 "Running IPv6 server\n");
1751 plugin->server_v6_immediately = GNUNET_NO;
1752 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
1753 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1758 * Function that queries MHD's select sets and
1759 * starts the task waiting for them.
1761 * @param plugin plugin
1762 * @param daemon_handle the MHD daemon handle
1763 * @return gnunet task identifier
1765 static GNUNET_SCHEDULER_TaskIdentifier
1766 server_schedule (struct HTTP_Server_Plugin *plugin,
1767 struct MHD_Daemon *daemon_handle,
1770 GNUNET_SCHEDULER_TaskIdentifier ret;
1774 struct GNUNET_NETWORK_FDSet *wrs;
1775 struct GNUNET_NETWORK_FDSet *wws;
1776 struct GNUNET_NETWORK_FDSet *wes;
1778 MHD_UNSIGNED_LONG_LONG timeout;
1779 static unsigned long long last_timeout = 0;
1782 struct GNUNET_TIME_Relative tv;
1784 if (GNUNET_YES == plugin->in_shutdown)
1785 return GNUNET_SCHEDULER_NO_TASK;
1787 ret = GNUNET_SCHEDULER_NO_TASK;
1791 wrs = GNUNET_NETWORK_fdset_create ();
1792 wes = GNUNET_NETWORK_fdset_create ();
1793 wws = GNUNET_NETWORK_fdset_create ();
1795 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1796 haveto = MHD_get_timeout (daemon_handle, &timeout);
1797 if (haveto == MHD_YES)
1799 if (timeout != last_timeout)
1802 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1803 "SELECT Timeout changed from %llu to %llu (ms)\n",
1804 last_timeout, timeout);
1805 last_timeout = timeout;
1807 if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
1808 tv.rel_value_us = (uint64_t) timeout * 1000LL;
1810 tv = GNUNET_TIME_UNIT_SECONDS;
1813 tv = GNUNET_TIME_UNIT_SECONDS;
1814 /* Force immediate run, since we have outbound data to send */
1815 if (now == GNUNET_YES)
1816 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1817 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1818 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1819 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1821 if (daemon_handle == plugin->server_v4)
1823 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1825 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1826 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1829 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1830 "Scheduling IPv4 server task in %llu ms\n", tv);
1833 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1835 &server_v4_run, plugin);
1837 if (daemon_handle == plugin->server_v6)
1839 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1841 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1842 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1845 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1846 "Scheduling IPv6 server task in %llu ms\n", tv);
1849 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1851 &server_v6_run, plugin);
1853 GNUNET_NETWORK_fdset_destroy (wrs);
1854 GNUNET_NETWORK_fdset_destroy (wws);
1855 GNUNET_NETWORK_fdset_destroy (wes);
1862 * Load ssl certificate from file
1864 * @param file filename
1865 * @return content of the file
1868 server_load_file (const char *file)
1870 struct GNUNET_DISK_FileHandle *gn_file;
1874 if (GNUNET_OK != GNUNET_DISK_file_size (file,
1875 &fsize, GNUNET_NO, GNUNET_YES))
1877 text = GNUNET_malloc (fsize + 1);
1879 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
1880 GNUNET_DISK_PERM_USER_READ);
1881 if (gn_file == NULL)
1886 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
1889 GNUNET_DISK_file_close (gn_file);
1893 GNUNET_DISK_file_close (gn_file);
1901 * Load ssl certificate
1903 * @param plugin the plugin
1904 * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
1907 server_load_certificate (struct HTTP_Server_Plugin *plugin)
1909 int res = GNUNET_OK;
1915 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1916 "KEY_FILE", &key_file))
1918 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1919 plugin->name, "CERT_FILE");
1920 return GNUNET_SYSERR;
1923 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1924 "CERT_FILE", &cert_file))
1926 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1927 plugin->name, "CERT_FILE");
1928 GNUNET_free (key_file);
1929 return GNUNET_SYSERR;
1931 /* Get crypto init string from config. If not present, use
1934 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
1937 &plugin->crypto_init))
1938 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1939 "Using crypto init string `%s'\n",
1940 plugin->crypto_init);
1942 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1943 "Using default crypto init string \n");
1945 /* read key & certificates from file */
1946 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1947 "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
1948 key_file, cert_file);
1950 plugin->key = server_load_file (key_file);
1951 plugin->cert = server_load_file (cert_file);
1953 if ((plugin->key == NULL) || (plugin->cert == NULL))
1955 struct GNUNET_OS_Process *cert_creation;
1957 GNUNET_free_non_null (plugin->key);
1959 GNUNET_free_non_null (plugin->cert);
1960 plugin->cert = NULL;
1962 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1963 "No usable TLS certificate found, creating certificate\n");
1966 GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
1967 "gnunet-transport-certificate-creation",
1968 "gnunet-transport-certificate-creation",
1969 key_file, cert_file, NULL);
1970 if (cert_creation == NULL)
1972 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1974 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
1975 GNUNET_free (key_file);
1976 GNUNET_free (cert_file);
1978 GNUNET_free_non_null (plugin->key);
1980 GNUNET_free_non_null (plugin->cert);
1981 plugin->cert = NULL;
1982 GNUNET_free_non_null (plugin->crypto_init);
1983 plugin->crypto_init = NULL;
1985 return GNUNET_SYSERR;
1987 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
1988 GNUNET_OS_process_destroy (cert_creation);
1990 plugin->key = server_load_file (key_file);
1991 plugin->cert = server_load_file (cert_file);
1994 if ((plugin->key == NULL) || (plugin->cert == NULL))
1996 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1998 _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
1999 key_file, cert_file);
2000 GNUNET_free (key_file);
2001 GNUNET_free (cert_file);
2003 GNUNET_free_non_null (plugin->key);
2005 GNUNET_free_non_null (plugin->cert);
2006 plugin->cert = NULL;
2007 GNUNET_free_non_null (plugin->crypto_init);
2008 plugin->crypto_init = NULL;
2010 return GNUNET_SYSERR;
2012 GNUNET_free (key_file);
2013 GNUNET_free (cert_file);
2014 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
2021 * Start the HTTP server
2023 * @param plugin the plugin handle
2024 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2027 server_start (struct HTTP_Server_Plugin *plugin)
2029 unsigned int timeout;
2031 GNUNET_assert (NULL != plugin);
2034 if (GNUNET_SYSERR == server_load_certificate (plugin))
2036 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2037 "Could not load or create server certificate! Loading plugin failed!\n");
2038 return GNUNET_SYSERR;
2043 #if MHD_VERSION >= 0x00090E00
2044 timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2045 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2046 "MHD can set timeout per connection! Default time out %u sec.\n",
2049 timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2050 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2051 "MHD cannot set timeout per connection! Default time out %u sec.\n",
2055 plugin->server_v4 = NULL;
2056 if (plugin->use_ipv4 == GNUNET_YES)
2058 plugin->server_v4 = MHD_start_daemon (
2065 MHD_NO_FLAG, plugin->port,
2066 &server_accept_cb, plugin,
2067 &server_access_cb, plugin,
2068 MHD_OPTION_SOCK_ADDR,
2069 (struct sockaddr_in *)
2070 plugin->server_addr_v4,
2071 MHD_OPTION_CONNECTION_LIMIT,
2073 plugin->max_connections,
2075 MHD_OPTION_HTTPS_PRIORITIES,
2076 plugin->crypto_init,
2077 MHD_OPTION_HTTPS_MEM_KEY,
2079 MHD_OPTION_HTTPS_MEM_CERT,
2082 MHD_OPTION_CONNECTION_TIMEOUT,
2084 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2086 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2087 MHD_OPTION_NOTIFY_COMPLETED,
2088 &server_disconnect_cb, plugin,
2089 MHD_OPTION_EXTERNAL_LOGGER,
2090 server_log, NULL, MHD_OPTION_END);
2091 if (plugin->server_v4 == NULL)
2093 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2094 "Failed to start %s IPv4 server component on port %u\n",
2095 plugin->name, plugin->port);
2098 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
2102 plugin->server_v6 = NULL;
2103 if (plugin->use_ipv6 == GNUNET_YES)
2105 plugin->server_v6 = MHD_start_daemon (
2112 MHD_USE_IPv6, plugin->port,
2113 &server_accept_cb, plugin,
2114 &server_access_cb, plugin,
2115 MHD_OPTION_SOCK_ADDR,
2116 (struct sockaddr_in6 *)
2117 plugin->server_addr_v6,
2118 MHD_OPTION_CONNECTION_LIMIT,
2120 plugin->max_connections,
2122 MHD_OPTION_HTTPS_PRIORITIES,
2123 plugin->crypto_init,
2124 MHD_OPTION_HTTPS_MEM_KEY,
2126 MHD_OPTION_HTTPS_MEM_CERT,
2129 MHD_OPTION_CONNECTION_TIMEOUT,
2131 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2133 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2134 MHD_OPTION_NOTIFY_COMPLETED,
2135 &server_disconnect_cb, plugin,
2136 MHD_OPTION_EXTERNAL_LOGGER,
2137 server_log, NULL, MHD_OPTION_END);
2138 if (plugin->server_v6 == NULL)
2140 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2141 "Failed to start %s IPv6 server component on port %u\n",
2142 plugin->name, plugin->port);
2145 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
2149 if ((plugin->server_v6 == NULL) && (plugin->server_v4 == NULL))
2151 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2152 "%s %s server component started on port %u\n",
2153 msg, plugin->name, plugin->port);
2155 return GNUNET_SYSERR;
2157 else if ((plugin->server_v6 != NULL) && (plugin->server_v4 != NULL))
2158 msg = "IPv4 and IPv6";
2159 else if (plugin->server_v6 != NULL)
2161 else if (plugin->server_v4 != NULL)
2163 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2164 "%s %s server component started on port %u\n",
2165 msg, plugin->name, plugin->port);
2171 server_stop (struct HTTP_Server_Plugin *plugin)
2173 if (plugin->server_v4 != NULL)
2175 MHD_stop_daemon (plugin->server_v4);
2176 plugin->server_v4 = NULL;
2178 if ( plugin->server_v6 != NULL)
2180 MHD_stop_daemon (plugin->server_v6);
2181 plugin->server_v6 = NULL;
2185 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
2187 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
2188 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
2191 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
2193 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
2194 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
2197 GNUNET_free_non_null (plugin->crypto_init);
2198 GNUNET_free_non_null (plugin->cert);
2199 GNUNET_free_non_null (plugin->key);
2202 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2203 "%s server component stopped\n", plugin->name);
2208 * Add an address to the server's set of addresses and notify transport
2210 * @param cls the plugin handle
2211 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2212 * @param addr the address
2213 * @param addrlen address length
2216 server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
2219 struct HTTP_Server_Plugin *plugin = cls;
2220 struct HttpAddressWrapper *w = NULL;
2222 w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
2223 w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2224 if (NULL == w->address)
2229 w->addrlen = http_common_address_get_size (w->address);
2231 GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
2232 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2233 "Notifying transport to add address `%s'\n",
2234 http_common_plugin_address_to_string (NULL,
2236 w->address, w->addrlen));
2238 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2240 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2246 * Remove an address from the server's set of addresses and notify transport
2248 * @param cls the plugin handle
2249 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2250 * @param addr the address
2251 * @param addrlen address length
2254 server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
2257 struct HTTP_Server_Plugin *plugin = cls;
2258 struct HttpAddressWrapper *w = plugin->addr_head;
2260 void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2263 saddr_len = http_common_address_get_size (saddr);
2267 if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
2271 GNUNET_free (saddr);
2276 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2277 "Notifying transport to remove address `%s'\n",
2278 http_common_plugin_address_to_string (NULL,
2280 w->address, w->addrlen));
2281 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2283 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2285 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2287 GNUNET_free (w->address);
2294 * Our external IP address/port mapping has changed.
2296 * @param cls closure, the 'struct LocalAddrList'
2297 * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
2298 * the previous (now invalid) one
2299 * @param addr either the previous or the new public IP address
2300 * @param addrlen actual lenght of the address
2303 server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
2306 GNUNET_assert (cls != NULL);
2307 struct HTTP_Server_Plugin *plugin = cls;
2309 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2310 "NAT called to %s address `%s'\n",
2311 (add_remove == GNUNET_NO) ? "remove" : "add",
2312 GNUNET_a2s (addr, addrlen));
2314 if (AF_INET == addr->sa_family)
2316 struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
2318 if (GNUNET_NO == plugin->use_ipv4)
2321 if ((NULL != plugin->server_addr_v4) &&
2322 (0 != memcmp (&plugin->server_addr_v4->sin_addr,
2323 &s4->sin_addr, sizeof (struct in_addr))))
2325 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2326 "Skipping address `%s' (not bindto address)\n",
2327 GNUNET_a2s (addr, addrlen));
2332 if (AF_INET6 == addr->sa_family)
2334 struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
2335 if (GNUNET_NO == plugin->use_ipv6)
2338 if ((NULL != plugin->server_addr_v6) &&
2339 (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
2340 &s6->sin6_addr, sizeof (struct in6_addr))))
2342 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2343 "Skipping address `%s' (not bindto address)\n",
2344 GNUNET_a2s (addr, addrlen));
2352 server_add_address (cls, add_remove, addr, addrlen);
2355 server_remove_address (cls, add_remove, addr, addrlen);
2362 * Get valid server addresses
2364 * @param plugin the plugin handle
2365 * @param service_name the servicename
2366 * @param cfg configuration handle
2367 * @param addrs addresses
2368 * @param addr_lens address length
2369 * @return number of addresses
2372 server_get_addresses (struct HTTP_Server_Plugin *plugin,
2373 const char *service_name,
2374 const struct GNUNET_CONFIGURATION_Handle *cfg,
2375 struct sockaddr ***addrs, socklen_t ** addr_lens)
2378 unsigned long long port;
2379 struct addrinfo hints;
2380 struct addrinfo *res;
2381 struct addrinfo *pos;
2382 struct addrinfo *next;
2386 struct sockaddr **saddrs;
2387 socklen_t *saddrlens;
2393 disablev6 = !plugin->use_ipv6;
2396 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
2398 GNUNET_break (GNUNET_OK ==
2399 GNUNET_CONFIGURATION_get_value_number (cfg, service_name,
2403 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2405 ("Require valid port number for service in configuration!\n"));
2406 return GNUNET_SYSERR;
2411 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2412 "Starting in listen only mode\n");
2413 return -1; /* listen only */
2417 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
2419 GNUNET_break (GNUNET_OK ==
2420 GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
2421 "BINDTO", &hostname));
2426 if (hostname != NULL)
2428 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2429 "Resolving `%s' since that is where `%s' will bind to.\n",
2430 hostname, service_name);
2431 memset (&hints, 0, sizeof (struct addrinfo));
2433 hints.ai_family = AF_INET;
2434 if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
2437 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
2438 hostname, gai_strerror (ret));
2439 GNUNET_free (hostname);
2440 return GNUNET_SYSERR;
2444 while (NULL != (pos = next))
2446 next = pos->ai_next;
2447 if ((disablev6) && (pos->ai_family == AF_INET6))
2453 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2454 _("Failed to find %saddress for `%s'.\n"),
2455 disablev6 ? "IPv4 " : "", hostname);
2457 GNUNET_free (hostname);
2458 return GNUNET_SYSERR;
2461 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2462 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2465 while (NULL != (pos = next))
2467 next = pos->ai_next;
2468 if ((disablev6) && (pos->ai_family == AF_INET6))
2470 if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
2471 continue; /* not TCP */
2472 if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
2473 continue; /* huh? */
2474 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2475 "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
2477 if (pos->ai_family == AF_INET)
2479 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
2480 saddrlens[i] = pos->ai_addrlen;
2481 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2482 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2483 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2487 GNUNET_assert (pos->ai_family == AF_INET6);
2488 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
2489 saddrlens[i] = pos->ai_addrlen;
2490 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2491 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2492 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2496 GNUNET_free (hostname);
2502 /* will bind against everything, just set port */
2508 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2509 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2511 saddrlens[i] = sizeof (struct sockaddr_in);
2512 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2513 #if HAVE_SOCKADDR_IN_SIN_LEN
2514 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
2516 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2517 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2523 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2524 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2526 saddrlens[i] = sizeof (struct sockaddr_in6);
2527 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2528 #if HAVE_SOCKADDR_IN_SIN_LEN
2529 ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
2531 ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
2532 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2534 saddrlens[i] = sizeof (struct sockaddr_in);
2535 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2536 #if HAVE_SOCKADDR_IN_SIN_LEN
2537 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
2539 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2540 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2544 *addr_lens = saddrlens;
2550 * Ask NAT for addresses
2552 * @param plugin the plugin handle
2555 server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
2557 int res = GNUNET_OK;
2558 struct sockaddr **addrs;
2559 socklen_t *addrlens;
2561 res = server_get_addresses (plugin,
2562 plugin->name, plugin->env->cfg,
2564 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2565 _("Found %u addresses to report to NAT service\n"), res);
2567 if (GNUNET_SYSERR == res)
2574 GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
2576 (const struct sockaddr **) addrs, addrlens,
2577 &server_nat_port_map_callback, NULL, plugin);
2581 GNUNET_assert (addrs[res] != NULL);
2582 GNUNET_free (addrs[res]);
2584 GNUNET_free_non_null (addrs);
2585 GNUNET_free_non_null (addrlens);
2590 * Stop NAT for addresses
2592 * @param plugin the plugin handle
2595 server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
2597 /* Stop NAT handle */
2598 if (NULL != plugin->nat)
2599 GNUNET_NAT_unregister (plugin->nat);
2601 /* Clean up addresses */
2602 struct HttpAddressWrapper *w;
2604 while (plugin->addr_head != NULL)
2606 w = plugin->addr_head;
2607 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2608 GNUNET_free (w->address);
2615 * Check if IPv6 supported on this system
2617 * @param plugin the plugin handle
2618 * @return GNUNET_YES on success, else GNUNET_NO
2621 server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
2623 struct GNUNET_NETWORK_Handle *desc = NULL;
2624 int res = GNUNET_NO;
2626 /* Probe IPv6 support */
2627 desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
2630 if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
2633 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
2635 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2637 ("Disabling IPv6 since it is not supported on this system!\n"));
2642 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
2646 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2647 "Testing IPv6 on this system: %s\n",
2648 (res == GNUNET_YES) ? "successful" : "failed");
2654 * Notify server about our external hostname
2657 * @param tc task context (unused)
2660 server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2662 struct HTTP_Server_Plugin *plugin = cls;
2666 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2667 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2670 GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
2672 urlen = strlen (url) + 1;
2673 plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
2674 plugin->ext_addr->options = htonl(plugin->options);
2675 plugin->ext_addr->urlen = htonl (urlen);
2676 plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
2677 memcpy (&plugin->ext_addr[1], url, urlen);
2679 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2680 "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
2683 if (GNUNET_YES == plugin->verify_external_hostname)
2684 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2685 "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
2686 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2687 plugin->ext_addr, plugin->ext_addr_len,
2690 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2691 plugin->ext_addr, plugin->ext_addr_len,
2698 * Configure the plugin
2700 * @param plugin plugin handle
2701 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2704 server_configure_plugin (struct HTTP_Server_Plugin *plugin)
2706 unsigned long long port;
2707 unsigned long long max_connections;
2708 char *bind4_address = NULL;
2709 char *bind6_address = NULL;
2710 char *eh_tmp = NULL;
2711 int external_hostname_use_port;
2714 if (GNUNET_CONFIGURATION_have_value
2715 (plugin->env->cfg, plugin->name, "USE_IPv4"))
2718 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2722 plugin->use_ipv4 = GNUNET_YES;
2723 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2724 _("IPv4 support is %s\n"),
2725 (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
2728 if (GNUNET_CONFIGURATION_have_value
2729 (plugin->env->cfg, plugin->name, "USE_IPv6"))
2732 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2736 plugin->use_ipv6 = GNUNET_YES;
2737 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2738 _("IPv6 support is %s\n"),
2739 (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
2741 if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
2743 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2745 ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
2747 return GNUNET_SYSERR;
2750 /* Reading port number from config file */
2752 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
2753 "PORT", &port)) || (port > 65535))
2755 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2756 _("Port is required! Fix in configuration\n"),
2758 return GNUNET_SYSERR;
2760 plugin->port = port;
2762 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2763 _("Using port %u\n"), plugin->port);
2765 if ((plugin->use_ipv4 == GNUNET_YES) &&
2766 (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
2767 plugin->name, "BINDTO", &bind4_address)))
2769 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2770 "Binding %s plugin to specific IPv4 address: `%s'\n",
2771 plugin->protocol, bind4_address);
2772 plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
2773 if (1 != inet_pton (AF_INET, bind4_address,
2774 &plugin->server_addr_v4->sin_addr))
2776 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2778 ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
2780 GNUNET_free (bind4_address);
2781 GNUNET_free (plugin->server_addr_v4);
2782 plugin->server_addr_v4 = NULL;
2783 return GNUNET_SYSERR;
2787 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2788 _("Binding to IPv4 address %s\n"), bind4_address);
2789 plugin->server_addr_v4->sin_family = AF_INET;
2790 plugin->server_addr_v4->sin_port = htons (plugin->port);
2792 GNUNET_free (bind4_address);
2795 if ((plugin->use_ipv6 == GNUNET_YES) &&
2797 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2798 "BINDTO6", &bind6_address)))
2800 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2801 "Binding %s plugin to specific IPv6 address: `%s'\n",
2802 plugin->protocol, bind6_address);
2803 plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
2805 inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
2807 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2809 ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
2811 GNUNET_free (bind6_address);
2812 GNUNET_free (plugin->server_addr_v6);
2813 plugin->server_addr_v6 = NULL;
2814 return GNUNET_SYSERR;
2818 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2819 _("Binding to IPv6 address %s\n"), bind6_address);
2820 plugin->server_addr_v6->sin6_family = AF_INET6;
2821 plugin->server_addr_v6->sin6_port = htons (plugin->port);
2823 GNUNET_free (bind6_address);
2826 plugin->verify_external_hostname = GNUNET_NO;
2828 plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2829 "VERIFY_EXTERNAL_HOSTNAME");
2830 if (GNUNET_SYSERR == plugin->verify_external_hostname)
2831 plugin->verify_external_hostname = GNUNET_NO;
2832 if (GNUNET_YES == plugin->verify_external_hostname)
2833 plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
2835 external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2836 "EXTERNAL_HOSTNAME_USE_PORT");
2837 if (GNUNET_SYSERR == external_hostname_use_port)
2838 external_hostname_use_port = GNUNET_NO;
2841 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2842 "EXTERNAL_HOSTNAME", &eh_tmp))
2846 char * pos_url = NULL;
2848 if (NULL != strstr(eh_tmp, "://"))
2850 tmp = &strstr(eh_tmp, "://")[3];
2855 if (GNUNET_YES == external_hostname_use_port)
2857 if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
2861 GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
2864 GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
2867 plugin->external_hostname = GNUNET_strdup (tmp);
2868 GNUNET_free (eh_tmp);
2870 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2871 _("Using external hostname `%s'\n"), plugin->external_hostname);
2872 plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
2874 /* Use only configured external hostname */
2875 if (GNUNET_CONFIGURATION_have_value
2876 (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
2878 plugin->external_only =
2879 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2880 "EXTERNAL_HOSTNAME_ONLY");
2883 plugin->external_only = GNUNET_NO;
2885 if (GNUNET_YES == plugin->external_only)
2886 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2887 _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
2890 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2891 "No external hostname configured\n");
2893 /* Optional parameters */
2894 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
2896 "MAX_CONNECTIONS", &max_connections))
2897 max_connections = 128;
2898 plugin->max_connections = max_connections;
2900 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2901 _("Maximum number of connections is %u\n"),
2902 plugin->max_connections);
2905 plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
2912 * Session was idle, so disconnect it
2914 * @param cls the session
2915 * @param tc task context
2918 server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2920 struct Session *s = cls;
2922 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
2923 GNUNET_log (TIMEOUT_LOG,
2924 "Session %p was idle for %s, disconnecting\n",
2926 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2929 /* call session destroy function */
2930 GNUNET_assert (GNUNET_OK ==
2931 http_server_plugin_disconnect_session (s->plugin, s));
2936 * Start session timeout for session s
2938 * @param s the session
2941 server_start_session_timeout (struct Session *s)
2943 GNUNET_assert (NULL != s);
2944 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
2945 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
2946 &server_session_timeout,
2948 GNUNET_log (TIMEOUT_LOG,
2949 "Timeout for session %p set to %s\n",
2951 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2957 * Increment session timeout due to activity session s
2959 * @param s the session
2962 server_reschedule_session_timeout (struct Session *s)
2964 GNUNET_assert (NULL != s);
2965 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
2967 GNUNET_SCHEDULER_cancel (s->timeout_task);
2968 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
2969 &server_session_timeout,
2971 GNUNET_log (TIMEOUT_LOG,
2972 "Timeout rescheduled for session %p set to %s\n",
2974 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2980 * Exit point from the plugin.
2986 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2988 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2989 struct HTTP_Server_Plugin *plugin = api->cls;
2990 struct Session *pos;
2991 struct Session *next;
2993 if (NULL == api->cls)
2995 /* Free for stub mode */
2999 plugin->in_shutdown = GNUNET_YES;
3000 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3001 _("Shutting down plugin `%s'\n"),
3004 if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
3006 GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
3007 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
3010 if (NULL != plugin->ext_addr)
3012 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3013 "Notifying transport to remove address `%s'\n",
3014 http_common_plugin_address_to_string (NULL,
3017 plugin->ext_addr_len));
3019 plugin->env->notify_address (plugin->env->cls,
3022 plugin->ext_addr_len,
3025 plugin->env->notify_address (plugin->env->cls,
3028 plugin->ext_addr_len,
3033 /* Stop to report addresses to transport service */
3034 server_stop_report_addresses (plugin);
3035 server_stop (plugin);
3036 next = plugin->head;
3037 while (NULL != (pos = next))
3040 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3041 "Removing left over session %p\n", pos);
3043 if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
3045 /* Notify transport immediately that this session is invalid */
3046 pos->session_ended = GNUNET_YES;
3047 plugin->env->session_end (plugin->env->cls, &pos->target, pos);
3049 server_delete_session (plugin, pos);
3053 GNUNET_free_non_null (plugin->external_hostname);
3054 GNUNET_free_non_null (plugin->ext_addr);
3055 GNUNET_free_non_null (plugin->server_addr_v4);
3056 GNUNET_free_non_null (plugin->server_addr_v6);
3058 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3059 _("Shutdown for plugin `%s' complete\n"),
3062 GNUNET_free (plugin);
3069 http_plugin_address_to_string (void *cls,
3074 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3076 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3082 * Function obtain the network type for a session
3084 * @param cls closure ('struct Plugin*')
3085 * @param session the session
3086 * @return the network type in HBO or GNUNET_SYSERR
3088 static enum GNUNET_ATS_Network_Type
3089 http_server_get_network (void *cls,
3090 struct Session *session)
3092 GNUNET_assert (NULL != session);
3093 return ntohl (session->ats_address_network_type);
3098 * Entry point for the plugin.
3104 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
3106 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
3107 struct GNUNET_TRANSPORT_PluginFunctions *api;
3108 struct HTTP_Server_Plugin *plugin;
3110 if (NULL == env->receive)
3112 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
3113 initialze the plugin or the API */
3114 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3116 api->address_to_string = &http_plugin_address_to_string;
3117 api->string_to_address = &http_common_plugin_string_to_address;
3118 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3121 plugin = GNUNET_new (struct HTTP_Server_Plugin);
3123 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3125 api->send = &http_server_plugin_send;
3126 api->disconnect_peer = &http_server_plugin_disconnect_peer;
3127 api->disconnect_session = &http_server_plugin_disconnect_session;
3128 api->query_keepalive_factor = &http_server_query_keepalive_factor;
3129 api->check_address = &http_server_plugin_address_suggested;
3130 api->get_session = &http_server_plugin_get_session;
3132 api->address_to_string = &http_plugin_address_to_string;
3133 api->string_to_address = &http_common_plugin_string_to_address;
3134 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3135 api->get_network = &http_server_get_network;
3136 api->update_session_timeout = &http_server_plugin_update_session_timeout;
3138 plugin->name = "transport-https_server";
3139 plugin->protocol = "https";
3141 plugin->name = "transport-http_server";
3142 plugin->protocol = "http";
3145 /* Configure plugin */
3146 if (GNUNET_SYSERR == server_configure_plugin (plugin))
3148 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3152 /* Check IPv6 support */
3153 if (GNUNET_YES == plugin->use_ipv6)
3154 plugin->use_ipv6 = server_check_ipv6_support (plugin);
3156 /* Report addresses to transport service */
3157 if (GNUNET_NO == plugin->external_only)
3158 server_start_report_addresses (plugin);
3160 if (GNUNET_SYSERR == server_start (plugin))
3162 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3168 /* end of plugin_transport_http_server.c */