2 This file is part of GNUnet
3 (C) 2002-2013 Christian Grothoff (and other contributing authors)
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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
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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.
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17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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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,
608 server_reschedule_session_timeout (session);
615 * Function that can be used to force the plugin to disconnect
616 * from the given peer and cancel all previous transmissions
617 * (and their continuationc).
620 * @param target peer from which to disconnect
623 http_server_plugin_disconnect_peer (void *cls,
624 const struct GNUNET_PeerIdentity *target)
626 struct HTTP_Server_Plugin *plugin = cls;
627 struct Session *next;
630 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
631 "Transport tells me to disconnect `%s'\n",
632 GNUNET_i2s (target));
634 while (NULL != (pos = next))
637 if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
639 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
640 "Disconnecting session %p to `%s'\n",
641 pos, GNUNET_i2s (target));
642 http_server_plugin_disconnect_session (plugin, pos);
649 * Another peer has suggested an address for this
650 * peer and transport plugin. Check that this could be a valid
651 * address. If so, consider adding it to the list
655 * @param addr pointer to the address
656 * @param addrlen length of @a addr
657 * @return #GNUNET_OK if this is a plausible address for this peer
661 http_server_plugin_address_suggested (void *cls,
665 struct HTTP_Server_Plugin *plugin = cls;
666 struct HttpAddressWrapper *next;
667 struct HttpAddressWrapper *pos;
668 const struct HttpAddress *haddr = addr;
670 if ((NULL != plugin->ext_addr) &&
671 GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
673 plugin->ext_addr_len)))
675 /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
676 if ((ntohl (haddr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
677 (plugin->options & HTTP_OPTIONS_VERIFY_CERTIFICATE))
678 return GNUNET_NO; /* VERIFY option not set as required! */
681 next = plugin->addr_head;
682 while (NULL != (pos = next))
685 if (GNUNET_YES == (http_common_cmp_addresses(addr,
696 * Creates a new outbound session the transport
697 * service will use to send data to the peer
699 * Since HTTP/S server cannot create sessions, always return NULL
701 * @param cls the plugin
702 * @param address the address
703 * @return always NULL
705 static struct Session *
706 http_server_plugin_get_session (void *cls,
707 const struct GNUNET_HELLO_Address *address)
714 * Deleting the session
715 * Must not be used afterwards
717 * @param cls closure with the `struct HTTP_ServerPlugin`
718 * @param s the session to delete
719 * @return #GNUNET_OK on success
722 server_delete_session (void *cls,
725 struct HTTP_Server_Plugin *plugin = cls;
726 struct HTTP_Message *msg;
727 struct HTTP_Message *tmp;
729 server_stop_session_timeout(s);
730 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
735 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
736 if (NULL != msg->transmit_cont)
737 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
738 msg->size, msg->pos + msg->overhead);
742 if (NULL != s->msg_tk)
744 GNUNET_SERVER_mst_destroy (s->msg_tk);
747 GNUNET_free (s->addr);
748 GNUNET_free_non_null (s->server_recv);
749 GNUNET_free_non_null (s->server_send);
750 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
752 "Session %p destroyed\n", s);
759 * Cancel timeout for session s
761 * @param s the session
764 server_stop_session_timeout (struct Session *s)
766 GNUNET_assert (NULL != s);
768 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
770 GNUNET_SCHEDULER_cancel (s->timeout_task);
771 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
772 GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
778 * Function that queries MHD's select sets and
779 * starts the task waiting for them.
780 * @param plugin plugin
781 * @param daemon_handle the MHD daemon handle
782 * @param now schedule immediately
783 * @return task identifier
785 static GNUNET_SCHEDULER_TaskIdentifier
786 server_schedule (struct HTTP_Server_Plugin *plugin,
787 struct MHD_Daemon *daemon_handle,
792 * Reschedule the execution of both IPv4 and IPv6 server
793 * @param plugin the plugin
794 * @param server which server to schedule v4 or v6?
795 * @param now #GNUNET_YES to schedule execution immediately, #GNUNET_NO to wait
799 server_reschedule (struct HTTP_Server_Plugin *plugin,
800 struct MHD_Daemon *server,
803 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
805 if (GNUNET_YES == plugin->server_v4_immediately)
806 return; /* No rescheduling, server will run asap */
808 if (GNUNET_YES == now)
809 plugin->server_v4_immediately = GNUNET_YES;
811 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
813 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
814 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
816 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
819 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
821 if (GNUNET_YES == plugin->server_v6_immediately)
822 return; /* No rescheduling, server will run asap */
824 if (GNUNET_YES == now)
825 plugin->server_v6_immediately = GNUNET_YES;
827 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
829 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
830 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
832 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
838 * Disconnect session @a s
840 * @param cls closure with the `struct HTTP_Server_Plugin`
841 * @param s the session
842 * @return #GNUNET_OK on success
845 http_server_plugin_disconnect_session (void *cls,
848 struct HTTP_Server_Plugin *plugin = cls;
849 struct ServerConnection * send;
850 struct ServerConnection * recv;
852 if (GNUNET_NO == server_exist_session (plugin, s))
855 return GNUNET_SYSERR;
858 send = (struct ServerConnection *) s->server_send;
859 if (s->server_send != NULL)
861 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
862 "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
863 s, s->server_send, GNUNET_i2s (&s->target));
865 send->disconnect = GNUNET_YES;
866 MHD_set_connection_option (send->mhd_conn,
867 MHD_CONNECTION_OPTION_TIMEOUT,
869 server_reschedule (s->plugin, send->mhd_daemon, GNUNET_YES);
872 recv = (struct ServerConnection *) s->server_recv;
875 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
876 "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
877 s, s->server_recv, GNUNET_i2s (&s->target));
879 recv->disconnect = GNUNET_YES;
880 MHD_set_connection_option (recv->mhd_conn,
881 MHD_CONNECTION_OPTION_TIMEOUT,
883 server_reschedule (s->plugin, recv->mhd_daemon, GNUNET_YES);
890 * Function that is called to get the keepalive factor.
891 * GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT is divided by this number to
892 * calculate the interval between keepalive packets.
894 * @param cls closure with the `struct Plugin`
895 * @return keepalive factor
898 http_server_query_keepalive_factor (void *cls)
904 http_server_plugin_update_session_timeout (void *cls,
905 const struct GNUNET_PeerIdentity *peer,
906 struct Session *session)
913 * Tell MHD that the connection should timeout after @a to seconds.
915 * @param plugin our plugin
916 * @param s session for which the timeout changes
917 * @param to timeout in seconds
920 server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
924 /* Setting timeouts for other connections */
925 if (NULL != s->server_recv)
927 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
928 "Setting timeout for %p to %u sec.\n",
930 MHD_set_connection_option (s->server_recv->mhd_conn,
931 MHD_CONNECTION_OPTION_TIMEOUT,
933 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
935 if (NULL != s->server_send)
937 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
938 "Setting timeout for %p to %u sec.\n",
940 MHD_set_connection_option (s->server_send->mhd_conn,
941 MHD_CONNECTION_OPTION_TIMEOUT,
943 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
949 * Parse incoming URL for tag and target
951 * @param plugin plugin
952 * @param url incoming url
953 * @param target where to store the target
954 * @param tag where to store the tag
955 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
958 server_parse_url (struct HTTP_Server_Plugin *plugin,
960 struct GNUNET_PeerIdentity *target,
963 char * tag_start = NULL;
964 char * tag_end = NULL;
965 char * target_start = NULL;
966 char * separator = NULL;
967 unsigned int hash_length;
968 unsigned long int ctag;
971 * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
976 return GNUNET_SYSERR;
981 separator = strrchr (url, ';');
983 if (NULL == separator)
985 if (DEBUG_URL_PARSE) GNUNET_break (0);
986 return GNUNET_SYSERR;
988 tag_start = separator + 1;
990 if (strlen (tag_start) == 0)
992 /* No tag after separator */
993 if (DEBUG_URL_PARSE) GNUNET_break (0);
994 return GNUNET_SYSERR;
996 ctag = strtoul (tag_start, &tag_end, 10);
999 /* tag == 0 , invalid */
1000 if (DEBUG_URL_PARSE) GNUNET_break (0);
1001 return GNUNET_SYSERR;
1003 if ((ctag == ULONG_MAX) && (ERANGE == errno))
1005 /* out of range: > ULONG_MAX */
1006 if (DEBUG_URL_PARSE) GNUNET_break (0);
1007 return GNUNET_SYSERR;
1009 if (ctag > UINT32_MAX)
1011 /* out of range: > UINT32_MAX */
1012 if (DEBUG_URL_PARSE) GNUNET_break (0);
1013 return GNUNET_SYSERR;
1015 (*tag) = (uint32_t) ctag;
1016 if (NULL == tag_end)
1018 /* no char after tag */
1019 if (DEBUG_URL_PARSE) GNUNET_break (0);
1020 return GNUNET_SYSERR;
1022 if (url[strlen(url)] != tag_end[0])
1024 /* there are more not converted chars after tag */
1025 if (DEBUG_URL_PARSE) GNUNET_break (0);
1026 return GNUNET_SYSERR;
1028 if (DEBUG_URL_PARSE)
1029 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1030 "Found tag `%u' in url\n", (*tag));
1032 /* convert peer id */
1033 target_start = strrchr (url, '/');
1034 if (NULL == target_start)
1036 /* no leading '/' */
1037 target_start = (char *) url;
1040 hash_length = separator - target_start;
1041 if (hash_length != plugin->peer_id_length)
1043 /* no char after tag */
1044 if (DEBUG_URL_PARSE) GNUNET_break (0);
1045 return GNUNET_SYSERR;
1048 GNUNET_CRYPTO_eddsa_public_key_from_string (target_start,
1050 &target->public_key))
1052 /* hash conversion failed */
1053 if (DEBUG_URL_PARSE) GNUNET_break (0);
1054 return GNUNET_SYSERR;
1056 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1058 "Found target `%s' in URL\n",
1059 GNUNET_i2s_full (target));
1065 * Lookup a mhd connection and create one if none is found
1067 * @param plugin the plugin handle
1068 * @param mhd_connection the incoming mhd_connection
1069 * @param url incoming requested URL
1070 * @param method PUT or GET
1071 * @return the server connecetion
1073 static struct ServerConnection *
1074 server_lookup_connection (struct HTTP_Server_Plugin *plugin,
1075 struct MHD_Connection *mhd_connection, const char *url,
1078 struct Session *s = NULL;
1079 struct ServerConnection *sc = NULL;
1080 const union MHD_ConnectionInfo *conn_info;
1081 struct GNUNET_ATS_Information ats;
1082 struct HttpAddress *addr;
1084 struct GNUNET_PeerIdentity target;
1086 int direction = GNUNET_SYSERR;
1089 conn_info = MHD_get_connection_info (mhd_connection,
1090 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
1091 if ((conn_info->client_addr->sa_family != AF_INET) &&
1092 (conn_info->client_addr->sa_family != AF_INET6))
1094 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1095 "New %s connection from %s\n", method, url);
1097 if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
1099 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1100 "Invalid url %s\n", url);
1103 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1104 direction = _RECEIVE;
1105 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
1109 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1110 "Invalid method %s connection from %s\n", method, url);
1114 plugin->cur_connections++;
1115 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1116 "New %s connection from %s with tag %u (%u of %u)\n",
1118 GNUNET_i2s (&target), tag,
1119 plugin->cur_connections, plugin->max_connections);
1120 /* find duplicate session */
1124 if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
1131 if ((_RECEIVE == direction) && (NULL != s->server_recv))
1133 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1134 "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
1135 GNUNET_i2s (&target),
1140 if ((_SEND == direction) && (NULL != s->server_send))
1142 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1143 "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
1144 GNUNET_i2s (&target),
1151 /* create new session */
1152 switch (conn_info->client_addr->sa_family)
1155 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
1156 addr_len = http_common_address_get_size (addr);
1157 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
1160 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
1161 addr_len = http_common_address_get_size (addr);
1162 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
1165 /* external host name */
1166 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1167 ats.type = htonl (GNUNET_ATS_NET_WAN);
1171 s = GNUNET_new (struct Session);
1172 memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
1175 s->addrlen = addr_len;
1176 s->ats_address_network_type = ats.value;
1177 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
1179 s->server_recv = NULL;
1180 s->server_send = NULL;
1181 s->session_passed = GNUNET_NO;
1182 s->session_ended = GNUNET_NO;
1183 s->connect_in_progress = GNUNET_YES;
1184 server_start_session_timeout(s);
1185 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1187 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1188 "Creating new session %p for peer `%s' connecting from `%s'\n",
1189 s, GNUNET_i2s (&target),
1190 http_common_plugin_address_to_string (NULL,
1194 sc = GNUNET_new (struct ServerConnection);
1195 if (conn_info->client_addr->sa_family == AF_INET)
1196 sc->mhd_daemon = plugin->server_v4;
1197 if (conn_info->client_addr->sa_family == AF_INET6)
1198 sc->mhd_daemon = plugin->server_v6;
1199 sc->mhd_conn = mhd_connection;
1200 sc->direction = direction;
1201 sc->connected = GNUNET_NO;
1203 if (direction == _SEND)
1204 s->server_send = sc;
1205 if (direction == _RECEIVE)
1206 s->server_recv = sc;
1208 if ((NULL != s->server_send) && (NULL != s->server_recv))
1210 s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
1211 plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
1214 if ((NULL == s->server_recv) || (NULL == s->server_send))
1216 to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1217 MHD_set_connection_option (mhd_connection,
1218 MHD_CONNECTION_OPTION_TIMEOUT, to);
1219 server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
1223 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1224 "Session %p for peer `%s' fully connected\n",
1225 s, GNUNET_i2s (&target));
1226 to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1227 server_mhd_connection_timeout (plugin, s, to);
1230 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1231 "Setting timeout for %p to %u sec.\n", sc, to);
1237 * Lookup a session for a server connection
1239 * @param plugin the plugin
1240 * @param sc the server connection
1241 * @return the session found or NULL
1243 static struct Session *
1244 server_lookup_session (struct HTTP_Server_Plugin *plugin,
1245 struct ServerConnection * sc)
1249 for (s = plugin->head; NULL != s; s = s->next)
1250 if ((s->server_recv == sc) || (s->server_send == sc))
1257 server_exist_session (struct HTTP_Server_Plugin *plugin,
1260 struct Session * head;
1262 for (head = plugin->head; head != NULL; head = head->next)
1270 * Callback called by MHD when it needs data to send
1272 * @param cls current session
1273 * @param pos position in buffer
1274 * @param buf the buffer to write data to
1275 * @param max max number of bytes available in buffer
1276 * @return bytes written to buffer
1279 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
1281 struct Session *s = cls;
1282 ssize_t bytes_read = 0;
1283 struct HTTP_Message *msg;
1286 if (GNUNET_NO == server_exist_session (s->plugin, s))
1292 bytes_read = GNUNET_MIN (msg->size - msg->pos,
1294 memcpy (buf, &msg->buf[msg->pos], bytes_read);
1295 msg->pos += bytes_read;
1297 /* removing message */
1298 if (msg->pos == msg->size)
1300 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1301 if (NULL != msg->transmit_cont)
1302 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
1303 msg->size, msg->size + msg->overhead);
1309 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1310 "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
1311 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers",
1312 s->plugin->protocol);
1313 GNUNET_STATISTICS_update (s->plugin->env->stats,
1314 stat_txt, -bytes_read, GNUNET_NO);
1315 GNUNET_free (stat_txt);
1316 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server",
1317 s->plugin->protocol);
1318 GNUNET_STATISTICS_update (s->plugin->env->stats,
1319 stat_txt, bytes_read, GNUNET_NO);
1320 GNUNET_free (stat_txt);
1327 * Callback called by MessageStreamTokenizer when a message has arrived
1329 * @param cls current session as closure
1330 * @param client client
1331 * @param message the message to be forwarded to transport service
1332 * @return #GNUNET_OK
1335 server_receive_mst_cb (void *cls, void *client,
1336 const struct GNUNET_MessageHeader *message)
1338 struct Session *s = cls;
1339 struct HTTP_Server_Plugin *plugin = s->plugin;
1340 struct GNUNET_ATS_Information atsi;
1341 struct GNUNET_TIME_Relative delay;
1344 if (GNUNET_NO == server_exist_session (s->plugin, s))
1348 atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1349 atsi.value = s->ats_address_network_type;
1350 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
1353 delay = plugin->env->receive (plugin->env->cls,
1358 plugin->env->update_address_metrics (plugin->env->cls,
1360 NULL, 0, s, &atsi, 1);
1362 GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
1363 GNUNET_STATISTICS_update (plugin->env->stats,
1364 stat_txt, ntohs (message->size), GNUNET_NO);
1365 GNUNET_free (stat_txt);
1367 s->session_passed = GNUNET_YES;
1368 s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
1369 if (delay.rel_value_us > 0)
1371 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1372 "Peer `%s' address `%s' next read delayed for %s\n",
1373 GNUNET_i2s (&s->target),
1374 http_common_plugin_address_to_string (NULL,
1376 s->addr, s->addrlen),
1377 GNUNET_STRINGS_relative_time_to_string (delay,
1380 server_reschedule_session_timeout (s);
1386 * MHD callback for a new incoming connection
1388 * @param cls the plugin handle
1389 * @param mhd_connection the mhd connection
1390 * @param url the requested URL
1391 * @param method GET or PUT
1392 * @param version HTTP version
1393 * @param upload_data upload data
1394 * @param upload_data_size sizeof upload data
1395 * @param httpSessionCache the session cache to remember the connection
1396 * @return MHD_YES if connection is accepted, MHD_NO on reject
1399 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
1400 const char *url, const char *method, const char *version,
1401 const char *upload_data, size_t * upload_data_size,
1402 void **httpSessionCache)
1404 struct HTTP_Server_Plugin *plugin = cls;
1407 struct ServerConnection *sc = *httpSessionCache;
1409 struct MHD_Response *response;
1411 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1412 _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
1414 plugin->cur_connections, plugin->max_connections,
1415 method, version, url, (*upload_data_size));
1417 GNUNET_assert (cls != NULL);
1420 /* new connection */
1421 sc = server_lookup_connection (plugin, mhd_connection, url, method);
1424 (*httpSessionCache) = sc;
1428 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
1429 MHD_add_response_header (response,
1430 MHD_HTTP_HEADER_CONTENT_TYPE,
1432 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1433 MHD_destroy_response (response);
1439 /* 'old' connection */
1440 if (NULL == server_lookup_session (plugin, sc))
1442 /* Session was already disconnected */
1447 /* existing connection */
1448 sc = (*httpSessionCache);
1450 GNUNET_assert (NULL != s);
1451 /* connection is to be disconnected */
1452 if (sc->disconnect == GNUNET_YES)
1454 /* Sent HTTP/1.1: 200 OK as response */
1455 response = MHD_create_response_from_data (strlen ("Thank you!"),
1458 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1459 MHD_destroy_response (response);
1462 GNUNET_assert (s != NULL);
1464 if (sc->direction == _SEND)
1466 response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1468 &server_send_callback, s,
1470 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1471 MHD_destroy_response (response);
1474 if (sc->direction == _RECEIVE)
1476 if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
1478 /* (*upload_data_size == 0) first callback when header are passed */
1479 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1480 "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
1482 GNUNET_i2s (&s->target),
1483 http_common_plugin_address_to_string (NULL,
1487 sc->connected = GNUNET_YES;
1490 else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
1492 /* (*upload_data_size == 0) when upload is complete */
1493 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1494 "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
1496 GNUNET_i2s (&s->target),
1497 http_common_plugin_address_to_string (NULL,
1501 sc->connected = GNUNET_NO;
1502 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
1503 response = MHD_create_response_from_data (strlen ("Thank you!"),
1506 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1507 MHD_destroy_response (response);
1510 else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
1512 /* (*upload_data_size > 0) for every segment received */
1513 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1514 "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
1516 GNUNET_i2s (&s->target),
1517 http_common_plugin_address_to_string (NULL,
1522 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
1524 if ((s->next_receive.abs_value_us <= now.abs_value_us))
1526 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1527 "PUT with %u bytes forwarded to MST\n",
1529 if (s->msg_tk == NULL)
1531 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
1533 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
1534 *upload_data_size, GNUNET_NO, GNUNET_NO);
1535 server_mhd_connection_timeout (plugin, s,
1536 GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1537 (*upload_data_size) = 0;
1541 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1542 "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
1544 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (s->next_receive),
1560 * Callback from MHD when a connection disconnects
1562 * @param cls closure with the `struct HTTP_Server_Plugin *`
1563 * @param connection the disconnected MHD connection
1564 * @param httpSessionCache the pointer to distinguish
1567 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
1568 void **httpSessionCache)
1570 struct HTTP_Server_Plugin *plugin = cls;
1571 struct ServerConnection *sc = *httpSessionCache;
1572 struct Session *s = NULL;
1573 struct Session *t = NULL;
1575 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1577 "Disconnect for connection %p \n", sc);
1582 if (NULL == (s = server_lookup_session (plugin, sc)))
1584 for (t = plugin->head; t != NULL; t = t->next)
1590 if (sc->direction == _SEND)
1592 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1593 "Peer `%s' connection %p, GET on address `%s' disconnected\n",
1594 GNUNET_i2s (&s->target), s->server_send,
1595 http_common_plugin_address_to_string (NULL,
1597 s->addr, s->addrlen));
1598 s->server_send = NULL;
1599 if (NULL != (s->server_recv))
1601 s->server_recv->disconnect = GNUNET_YES;
1602 GNUNET_assert (NULL != s->server_recv->mhd_conn);
1603 #if MHD_VERSION >= 0x00090E00
1604 MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1607 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
1610 if (sc->direction == _RECEIVE)
1612 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1613 "Peer `%s' connection %p PUT on address `%s' disconnected\n",
1614 GNUNET_i2s (&s->target), s->server_recv,
1615 http_common_plugin_address_to_string (NULL,
1617 s->addr, s->addrlen));
1618 s->server_recv = NULL;
1619 /* Do not terminate session when PUT disconnects
1620 if (NULL != (s->server_send))
1622 s->server_send->disconnect = GNUNET_YES;
1623 GNUNET_assert (NULL != s->server_send->mhd_conn);
1624 #if MHD_VERSION >= 0x00090E00
1625 MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1628 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
1630 if (s->msg_tk != NULL)
1632 GNUNET_SERVER_mst_destroy (s->msg_tk);
1638 plugin->cur_connections--;
1640 if ((s->server_send == NULL) && (s->server_recv == NULL))
1642 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1643 "Peer `%s' on address `%s' disconnected\n",
1644 GNUNET_i2s (&s->target),
1645 http_common_plugin_address_to_string (NULL,
1647 s->addr, s->addrlen));
1649 if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
1651 /* Notify transport immediately that this session is invalid */
1652 s->session_ended = GNUNET_YES;
1653 plugin->env->session_end (plugin->env->cls, &s->target, s);
1655 server_delete_session (plugin, s);
1661 * Check if incoming connection is accepted.
1663 * @param cls plugin as closure
1664 * @param addr address of incoming connection
1665 * @param addr_len address length of incoming connection
1666 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
1669 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
1671 struct HTTP_Server_Plugin *plugin = cls;
1673 if (plugin->cur_connections <= plugin->max_connections)
1675 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1676 _("Accepting connection (%u of %u) from `%s'\n"),
1677 plugin->cur_connections, plugin->max_connections,
1678 GNUNET_a2s (addr, addr_len));
1683 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1684 _("Server reached maximum number connections (%u), rejecting new connection\n"),
1685 plugin->max_connections);
1692 server_log (void *arg, const char *fmt, va_list ap)
1696 vsnprintf (text, sizeof (text), fmt, ap);
1698 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
1703 * Call MHD IPv4 to process pending requests and then go back
1704 * and schedule the next run.
1705 * @param cls plugin as closure
1706 * @param tc task context
1709 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1711 struct HTTP_Server_Plugin *plugin = cls;
1713 GNUNET_assert (cls != NULL);
1715 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1716 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1719 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1720 "Running IPv4 server\n");
1722 plugin->server_v4_immediately = GNUNET_NO;
1723 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
1724 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1729 * Call MHD IPv6 to process pending requests and then go back
1730 * and schedule the next run.
1731 * @param cls plugin as closure
1732 * @param tc task context
1735 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1737 struct HTTP_Server_Plugin *plugin = cls;
1739 GNUNET_assert (cls != NULL);
1740 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1741 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1744 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1745 "Running IPv6 server\n");
1747 plugin->server_v6_immediately = GNUNET_NO;
1748 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
1749 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1754 * Function that queries MHD's select sets and
1755 * starts the task waiting for them.
1757 * @param plugin plugin
1758 * @param daemon_handle the MHD daemon handle
1759 * @return gnunet task identifier
1761 static GNUNET_SCHEDULER_TaskIdentifier
1762 server_schedule (struct HTTP_Server_Plugin *plugin,
1763 struct MHD_Daemon *daemon_handle,
1766 GNUNET_SCHEDULER_TaskIdentifier ret;
1770 struct GNUNET_NETWORK_FDSet *wrs;
1771 struct GNUNET_NETWORK_FDSet *wws;
1772 struct GNUNET_NETWORK_FDSet *wes;
1774 MHD_UNSIGNED_LONG_LONG timeout;
1775 static unsigned long long last_timeout = 0;
1778 struct GNUNET_TIME_Relative tv;
1780 if (GNUNET_YES == plugin->in_shutdown)
1781 return GNUNET_SCHEDULER_NO_TASK;
1783 ret = GNUNET_SCHEDULER_NO_TASK;
1787 wrs = GNUNET_NETWORK_fdset_create ();
1788 wes = GNUNET_NETWORK_fdset_create ();
1789 wws = GNUNET_NETWORK_fdset_create ();
1791 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1792 haveto = MHD_get_timeout (daemon_handle, &timeout);
1793 if (haveto == MHD_YES)
1795 if (timeout != last_timeout)
1798 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1799 "SELECT Timeout changed from %llu to %llu (ms)\n",
1800 last_timeout, timeout);
1801 last_timeout = timeout;
1803 if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
1804 tv.rel_value_us = (uint64_t) timeout * 1000LL;
1806 tv = GNUNET_TIME_UNIT_SECONDS;
1809 tv = GNUNET_TIME_UNIT_SECONDS;
1810 /* Force immediate run, since we have outbound data to send */
1811 if (now == GNUNET_YES)
1812 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1813 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1814 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1815 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1817 if (daemon_handle == plugin->server_v4)
1819 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1821 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1822 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1825 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1826 "Scheduling IPv4 server task in %llu ms\n", tv);
1829 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1831 &server_v4_run, plugin);
1833 if (daemon_handle == plugin->server_v6)
1835 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1837 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1838 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1841 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1842 "Scheduling IPv6 server task in %llu ms\n", tv);
1845 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1847 &server_v6_run, plugin);
1849 GNUNET_NETWORK_fdset_destroy (wrs);
1850 GNUNET_NETWORK_fdset_destroy (wws);
1851 GNUNET_NETWORK_fdset_destroy (wes);
1858 * Load ssl certificate from file
1860 * @param file filename
1861 * @return content of the file
1864 server_load_file (const char *file)
1866 struct GNUNET_DISK_FileHandle *gn_file;
1870 if (GNUNET_OK != GNUNET_DISK_file_size (file,
1871 &fsize, GNUNET_NO, GNUNET_YES))
1873 text = GNUNET_malloc (fsize + 1);
1875 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
1876 GNUNET_DISK_PERM_USER_READ);
1877 if (gn_file == NULL)
1882 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
1885 GNUNET_DISK_file_close (gn_file);
1889 GNUNET_DISK_file_close (gn_file);
1897 * Load ssl certificate
1899 * @param plugin the plugin
1900 * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
1903 server_load_certificate (struct HTTP_Server_Plugin *plugin)
1905 int res = GNUNET_OK;
1911 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1912 "KEY_FILE", &key_file))
1914 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1915 plugin->name, "CERT_FILE");
1916 return GNUNET_SYSERR;
1919 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1920 "CERT_FILE", &cert_file))
1922 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1923 plugin->name, "CERT_FILE");
1924 GNUNET_free (key_file);
1925 return GNUNET_SYSERR;
1927 /* Get crypto init string from config. If not present, use
1930 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
1933 &plugin->crypto_init))
1934 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1935 "Using crypto init string `%s'\n",
1936 plugin->crypto_init);
1938 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1939 "Using default crypto init string \n");
1941 /* read key & certificates from file */
1942 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1943 "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
1944 key_file, cert_file);
1946 plugin->key = server_load_file (key_file);
1947 plugin->cert = server_load_file (cert_file);
1949 if ((plugin->key == NULL) || (plugin->cert == NULL))
1951 struct GNUNET_OS_Process *cert_creation;
1953 GNUNET_free_non_null (plugin->key);
1955 GNUNET_free_non_null (plugin->cert);
1956 plugin->cert = NULL;
1958 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1959 "No usable TLS certificate found, creating certificate\n");
1962 GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
1963 "gnunet-transport-certificate-creation",
1964 "gnunet-transport-certificate-creation",
1965 key_file, cert_file, NULL);
1966 if (cert_creation == NULL)
1968 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1970 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
1971 GNUNET_free (key_file);
1972 GNUNET_free (cert_file);
1974 GNUNET_free_non_null (plugin->key);
1976 GNUNET_free_non_null (plugin->cert);
1977 plugin->cert = NULL;
1978 GNUNET_free_non_null (plugin->crypto_init);
1979 plugin->crypto_init = NULL;
1981 return GNUNET_SYSERR;
1983 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
1984 GNUNET_OS_process_destroy (cert_creation);
1986 plugin->key = server_load_file (key_file);
1987 plugin->cert = server_load_file (cert_file);
1990 if ((plugin->key == NULL) || (plugin->cert == NULL))
1992 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1994 _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
1995 key_file, cert_file);
1996 GNUNET_free (key_file);
1997 GNUNET_free (cert_file);
1999 GNUNET_free_non_null (plugin->key);
2001 GNUNET_free_non_null (plugin->cert);
2002 plugin->cert = NULL;
2003 GNUNET_free_non_null (plugin->crypto_init);
2004 plugin->crypto_init = NULL;
2006 return GNUNET_SYSERR;
2008 GNUNET_free (key_file);
2009 GNUNET_free (cert_file);
2010 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
2017 * Start the HTTP server
2019 * @param plugin the plugin handle
2020 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2023 server_start (struct HTTP_Server_Plugin *plugin)
2025 unsigned int timeout;
2027 GNUNET_assert (NULL != plugin);
2030 if (GNUNET_SYSERR == server_load_certificate (plugin))
2032 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2033 "Could not load or create server certificate! Loading plugin failed!\n");
2034 return GNUNET_SYSERR;
2039 #if MHD_VERSION >= 0x00090E00
2040 timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2041 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2042 "MHD can set timeout per connection! Default time out %u sec.\n",
2045 timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2046 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2047 "MHD cannot set timeout per connection! Default time out %u sec.\n",
2051 plugin->server_v4 = NULL;
2052 if (plugin->use_ipv4 == GNUNET_YES)
2054 plugin->server_v4 = MHD_start_daemon (
2061 MHD_NO_FLAG, plugin->port,
2062 &server_accept_cb, plugin,
2063 &server_access_cb, plugin,
2064 MHD_OPTION_SOCK_ADDR,
2065 (struct sockaddr_in *)
2066 plugin->server_addr_v4,
2067 MHD_OPTION_CONNECTION_LIMIT,
2069 plugin->max_connections,
2071 MHD_OPTION_HTTPS_PRIORITIES,
2072 plugin->crypto_init,
2073 MHD_OPTION_HTTPS_MEM_KEY,
2075 MHD_OPTION_HTTPS_MEM_CERT,
2078 MHD_OPTION_CONNECTION_TIMEOUT,
2080 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2082 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2083 MHD_OPTION_NOTIFY_COMPLETED,
2084 &server_disconnect_cb, plugin,
2085 MHD_OPTION_EXTERNAL_LOGGER,
2086 server_log, NULL, MHD_OPTION_END);
2087 if (plugin->server_v4 == NULL)
2089 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2090 "Failed to start %s IPv4 server component on port %u\n",
2091 plugin->name, plugin->port);
2094 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
2098 plugin->server_v6 = NULL;
2099 if (plugin->use_ipv6 == GNUNET_YES)
2101 plugin->server_v6 = MHD_start_daemon (
2108 MHD_USE_IPv6, plugin->port,
2109 &server_accept_cb, plugin,
2110 &server_access_cb, plugin,
2111 MHD_OPTION_SOCK_ADDR,
2112 (struct sockaddr_in6 *)
2113 plugin->server_addr_v6,
2114 MHD_OPTION_CONNECTION_LIMIT,
2116 plugin->max_connections,
2118 MHD_OPTION_HTTPS_PRIORITIES,
2119 plugin->crypto_init,
2120 MHD_OPTION_HTTPS_MEM_KEY,
2122 MHD_OPTION_HTTPS_MEM_CERT,
2125 MHD_OPTION_CONNECTION_TIMEOUT,
2127 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2129 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2130 MHD_OPTION_NOTIFY_COMPLETED,
2131 &server_disconnect_cb, plugin,
2132 MHD_OPTION_EXTERNAL_LOGGER,
2133 server_log, NULL, MHD_OPTION_END);
2134 if (plugin->server_v6 == NULL)
2136 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2137 "Failed to start %s IPv6 server component on port %u\n",
2138 plugin->name, plugin->port);
2141 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
2145 if ((plugin->server_v6 == NULL) && (plugin->server_v4 == NULL))
2147 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2148 "%s %s server component started on port %u\n",
2149 msg, plugin->name, plugin->port);
2151 return GNUNET_SYSERR;
2153 else if ((plugin->server_v6 != NULL) && (plugin->server_v4 != NULL))
2154 msg = "IPv4 and IPv6";
2155 else if (plugin->server_v6 != NULL)
2157 else if (plugin->server_v4 != NULL)
2159 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2160 "%s %s server component started on port %u\n",
2161 msg, plugin->name, plugin->port);
2167 server_stop (struct HTTP_Server_Plugin *plugin)
2169 if (plugin->server_v4 != NULL)
2171 MHD_stop_daemon (plugin->server_v4);
2172 plugin->server_v4 = NULL;
2174 if ( plugin->server_v6 != NULL)
2176 MHD_stop_daemon (plugin->server_v6);
2177 plugin->server_v6 = NULL;
2181 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
2183 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
2184 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
2187 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
2189 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
2190 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
2193 GNUNET_free_non_null (plugin->crypto_init);
2194 GNUNET_free_non_null (plugin->cert);
2195 GNUNET_free_non_null (plugin->key);
2198 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2199 "%s server component stopped\n", plugin->name);
2204 * Add an address to the server's set of addresses and notify transport
2206 * @param cls the plugin handle
2207 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2208 * @param addr the address
2209 * @param addrlen address length
2212 server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
2215 struct HTTP_Server_Plugin *plugin = cls;
2216 struct HttpAddressWrapper *w = NULL;
2218 w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
2219 w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2220 if (NULL == w->address)
2225 w->addrlen = http_common_address_get_size (w->address);
2227 GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
2228 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2229 "Notifying transport to add address `%s'\n",
2230 http_common_plugin_address_to_string (NULL,
2232 w->address, w->addrlen));
2234 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2236 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2242 * Remove an address from the server's set of addresses and notify transport
2244 * @param cls the plugin handle
2245 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2246 * @param addr the address
2247 * @param addrlen address length
2250 server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
2253 struct HTTP_Server_Plugin *plugin = cls;
2254 struct HttpAddressWrapper *w = plugin->addr_head;
2256 void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2259 saddr_len = http_common_address_get_size (saddr);
2263 if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
2267 GNUNET_free (saddr);
2272 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2273 "Notifying transport to remove address `%s'\n",
2274 http_common_plugin_address_to_string (NULL,
2276 w->address, w->addrlen));
2277 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2279 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2281 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2283 GNUNET_free (w->address);
2290 * Our external IP address/port mapping has changed.
2292 * @param cls closure, the 'struct LocalAddrList'
2293 * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
2294 * the previous (now invalid) one
2295 * @param addr either the previous or the new public IP address
2296 * @param addrlen actual lenght of the address
2299 server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
2302 GNUNET_assert (cls != NULL);
2303 struct HTTP_Server_Plugin *plugin = cls;
2305 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2306 "NAT called to %s address `%s'\n",
2307 (add_remove == GNUNET_NO) ? "remove" : "add",
2308 GNUNET_a2s (addr, addrlen));
2310 if (AF_INET == addr->sa_family)
2312 struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
2314 if (GNUNET_NO == plugin->use_ipv4)
2317 if ((NULL != plugin->server_addr_v4) &&
2318 (0 != memcmp (&plugin->server_addr_v4->sin_addr,
2319 &s4->sin_addr, sizeof (struct in_addr))))
2321 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2322 "Skipping address `%s' (not bindto address)\n",
2323 GNUNET_a2s (addr, addrlen));
2328 if (AF_INET6 == addr->sa_family)
2330 struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
2331 if (GNUNET_NO == plugin->use_ipv6)
2334 if ((NULL != plugin->server_addr_v6) &&
2335 (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
2336 &s6->sin6_addr, sizeof (struct in6_addr))))
2338 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2339 "Skipping address `%s' (not bindto address)\n",
2340 GNUNET_a2s (addr, addrlen));
2348 server_add_address (cls, add_remove, addr, addrlen);
2351 server_remove_address (cls, add_remove, addr, addrlen);
2358 * Get valid server addresses
2360 * @param plugin the plugin handle
2361 * @param service_name the servicename
2362 * @param cfg configuration handle
2363 * @param addrs addresses
2364 * @param addr_lens address length
2365 * @return number of addresses
2368 server_get_addresses (struct HTTP_Server_Plugin *plugin,
2369 const char *service_name,
2370 const struct GNUNET_CONFIGURATION_Handle *cfg,
2371 struct sockaddr ***addrs, socklen_t ** addr_lens)
2374 unsigned long long port;
2375 struct addrinfo hints;
2376 struct addrinfo *res;
2377 struct addrinfo *pos;
2378 struct addrinfo *next;
2382 struct sockaddr **saddrs;
2383 socklen_t *saddrlens;
2389 disablev6 = !plugin->use_ipv6;
2392 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
2394 GNUNET_break (GNUNET_OK ==
2395 GNUNET_CONFIGURATION_get_value_number (cfg, service_name,
2399 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2401 ("Require valid port number for service in configuration!\n"));
2402 return GNUNET_SYSERR;
2407 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2408 "Starting in listen only mode\n");
2409 return -1; /* listen only */
2413 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
2415 GNUNET_break (GNUNET_OK ==
2416 GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
2417 "BINDTO", &hostname));
2422 if (hostname != NULL)
2424 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2425 "Resolving `%s' since that is where `%s' will bind to.\n",
2426 hostname, service_name);
2427 memset (&hints, 0, sizeof (struct addrinfo));
2429 hints.ai_family = AF_INET;
2430 if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
2433 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
2434 hostname, gai_strerror (ret));
2435 GNUNET_free (hostname);
2436 return GNUNET_SYSERR;
2440 while (NULL != (pos = next))
2442 next = pos->ai_next;
2443 if ((disablev6) && (pos->ai_family == AF_INET6))
2449 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2450 _("Failed to find %saddress for `%s'.\n"),
2451 disablev6 ? "IPv4 " : "", hostname);
2453 GNUNET_free (hostname);
2454 return GNUNET_SYSERR;
2457 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2458 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2461 while (NULL != (pos = next))
2463 next = pos->ai_next;
2464 if ((disablev6) && (pos->ai_family == AF_INET6))
2466 if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
2467 continue; /* not TCP */
2468 if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
2469 continue; /* huh? */
2470 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2471 "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
2473 if (pos->ai_family == AF_INET)
2475 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
2476 saddrlens[i] = pos->ai_addrlen;
2477 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2478 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2479 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2483 GNUNET_assert (pos->ai_family == AF_INET6);
2484 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
2485 saddrlens[i] = pos->ai_addrlen;
2486 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2487 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2488 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2492 GNUNET_free (hostname);
2498 /* will bind against everything, just set port */
2504 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2505 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2507 saddrlens[i] = sizeof (struct sockaddr_in);
2508 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2509 #if HAVE_SOCKADDR_IN_SIN_LEN
2510 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
2512 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2513 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2519 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2520 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2522 saddrlens[i] = sizeof (struct sockaddr_in6);
2523 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2524 #if HAVE_SOCKADDR_IN_SIN_LEN
2525 ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
2527 ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
2528 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2530 saddrlens[i] = sizeof (struct sockaddr_in);
2531 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2532 #if HAVE_SOCKADDR_IN_SIN_LEN
2533 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
2535 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2536 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2540 *addr_lens = saddrlens;
2546 * Ask NAT for addresses
2548 * @param plugin the plugin handle
2551 server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
2553 int res = GNUNET_OK;
2554 struct sockaddr **addrs;
2555 socklen_t *addrlens;
2557 res = server_get_addresses (plugin,
2558 plugin->name, plugin->env->cfg,
2560 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2561 _("Found %u addresses to report to NAT service\n"), res);
2563 if (GNUNET_SYSERR == res)
2570 GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
2572 (const struct sockaddr **) addrs, addrlens,
2573 &server_nat_port_map_callback, NULL, plugin);
2577 GNUNET_assert (addrs[res] != NULL);
2578 GNUNET_free (addrs[res]);
2580 GNUNET_free_non_null (addrs);
2581 GNUNET_free_non_null (addrlens);
2586 * Stop NAT for addresses
2588 * @param plugin the plugin handle
2591 server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
2593 /* Stop NAT handle */
2594 if (NULL != plugin->nat)
2595 GNUNET_NAT_unregister (plugin->nat);
2597 /* Clean up addresses */
2598 struct HttpAddressWrapper *w;
2600 while (plugin->addr_head != NULL)
2602 w = plugin->addr_head;
2603 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2604 GNUNET_free (w->address);
2611 * Check if IPv6 supported on this system
2613 * @param plugin the plugin handle
2614 * @return GNUNET_YES on success, else GNUNET_NO
2617 server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
2619 struct GNUNET_NETWORK_Handle *desc = NULL;
2620 int res = GNUNET_NO;
2622 /* Probe IPv6 support */
2623 desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
2626 if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
2629 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
2631 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2633 ("Disabling IPv6 since it is not supported on this system!\n"));
2638 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
2642 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2643 "Testing IPv6 on this system: %s\n",
2644 (res == GNUNET_YES) ? "successful" : "failed");
2650 * Notify server about our external hostname
2653 * @param tc task context (unused)
2656 server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2658 struct HTTP_Server_Plugin *plugin = cls;
2662 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2663 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2666 GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
2668 urlen = strlen (url) + 1;
2669 plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
2670 plugin->ext_addr->options = htonl(plugin->options);
2671 plugin->ext_addr->urlen = htonl (urlen);
2672 plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
2673 memcpy (&plugin->ext_addr[1], url, urlen);
2675 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2676 "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
2679 if (GNUNET_YES == plugin->verify_external_hostname)
2680 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2681 "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
2682 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2683 plugin->ext_addr, plugin->ext_addr_len,
2686 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2687 plugin->ext_addr, plugin->ext_addr_len,
2694 * Configure the plugin
2696 * @param plugin plugin handle
2697 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2700 server_configure_plugin (struct HTTP_Server_Plugin *plugin)
2702 unsigned long long port;
2703 unsigned long long max_connections;
2704 char *bind4_address = NULL;
2705 char *bind6_address = NULL;
2706 char *eh_tmp = NULL;
2707 int external_hostname_use_port;
2710 if (GNUNET_CONFIGURATION_have_value
2711 (plugin->env->cfg, plugin->name, "USE_IPv4"))
2714 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2718 plugin->use_ipv4 = GNUNET_YES;
2719 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2720 _("IPv4 support is %s\n"),
2721 (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
2724 if (GNUNET_CONFIGURATION_have_value
2725 (plugin->env->cfg, plugin->name, "USE_IPv6"))
2728 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2732 plugin->use_ipv6 = GNUNET_YES;
2733 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2734 _("IPv6 support is %s\n"),
2735 (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
2737 if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
2739 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2741 ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
2743 return GNUNET_SYSERR;
2746 /* Reading port number from config file */
2748 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
2749 "PORT", &port)) || (port > 65535))
2751 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2752 _("Port is required! Fix in configuration\n"),
2754 return GNUNET_SYSERR;
2756 plugin->port = port;
2758 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2759 _("Using port %u\n"), plugin->port);
2761 if ((plugin->use_ipv4 == GNUNET_YES) &&
2762 (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
2763 plugin->name, "BINDTO", &bind4_address)))
2765 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2766 "Binding %s plugin to specific IPv4 address: `%s'\n",
2767 plugin->protocol, bind4_address);
2768 plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
2769 if (1 != inet_pton (AF_INET, bind4_address,
2770 &plugin->server_addr_v4->sin_addr))
2772 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2774 ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
2776 GNUNET_free (bind4_address);
2777 GNUNET_free (plugin->server_addr_v4);
2778 plugin->server_addr_v4 = NULL;
2779 return GNUNET_SYSERR;
2783 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2784 _("Binding to IPv4 address %s\n"), bind4_address);
2785 plugin->server_addr_v4->sin_family = AF_INET;
2786 plugin->server_addr_v4->sin_port = htons (plugin->port);
2788 GNUNET_free (bind4_address);
2791 if ((plugin->use_ipv6 == GNUNET_YES) &&
2793 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2794 "BINDTO6", &bind6_address)))
2796 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2797 "Binding %s plugin to specific IPv6 address: `%s'\n",
2798 plugin->protocol, bind6_address);
2799 plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
2801 inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
2803 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2805 ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
2807 GNUNET_free (bind6_address);
2808 GNUNET_free (plugin->server_addr_v6);
2809 plugin->server_addr_v6 = NULL;
2810 return GNUNET_SYSERR;
2814 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2815 _("Binding to IPv6 address %s\n"), bind6_address);
2816 plugin->server_addr_v6->sin6_family = AF_INET6;
2817 plugin->server_addr_v6->sin6_port = htons (plugin->port);
2819 GNUNET_free (bind6_address);
2822 plugin->verify_external_hostname = GNUNET_NO;
2824 plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2825 "VERIFY_EXTERNAL_HOSTNAME");
2826 if (GNUNET_SYSERR == plugin->verify_external_hostname)
2827 plugin->verify_external_hostname = GNUNET_NO;
2828 if (GNUNET_YES == plugin->verify_external_hostname)
2829 plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
2831 external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2832 "EXTERNAL_HOSTNAME_USE_PORT");
2833 if (GNUNET_SYSERR == external_hostname_use_port)
2834 external_hostname_use_port = GNUNET_NO;
2837 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2838 "EXTERNAL_HOSTNAME", &eh_tmp))
2842 char * pos_url = NULL;
2844 if (NULL != strstr(eh_tmp, "://"))
2846 tmp = &strstr(eh_tmp, "://")[3];
2851 if (GNUNET_YES == external_hostname_use_port)
2853 if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
2857 GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
2860 GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
2863 plugin->external_hostname = GNUNET_strdup (tmp);
2864 GNUNET_free (eh_tmp);
2866 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2867 _("Using external hostname `%s'\n"), plugin->external_hostname);
2868 plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
2870 /* Use only configured external hostname */
2871 if (GNUNET_CONFIGURATION_have_value
2872 (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
2874 plugin->external_only =
2875 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2876 "EXTERNAL_HOSTNAME_ONLY");
2879 plugin->external_only = GNUNET_NO;
2881 if (GNUNET_YES == plugin->external_only)
2882 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2883 _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
2886 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2887 "No external hostname configured\n");
2889 /* Optional parameters */
2890 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
2892 "MAX_CONNECTIONS", &max_connections))
2893 max_connections = 128;
2894 plugin->max_connections = max_connections;
2896 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2897 _("Maximum number of connections is %u\n"),
2898 plugin->max_connections);
2901 plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
2908 * Session was idle, so disconnect it
2910 * @param cls the session
2911 * @param tc task context
2914 server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2916 struct Session *s = cls;
2918 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
2919 GNUNET_log (TIMEOUT_LOG,
2920 "Session %p was idle for %s, disconnecting\n",
2922 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2925 /* call session destroy function */
2926 GNUNET_assert (GNUNET_OK ==
2927 http_server_plugin_disconnect_session (s->plugin, s));
2932 * Start session timeout for session s
2934 * @param s the session
2937 server_start_session_timeout (struct Session *s)
2939 GNUNET_assert (NULL != s);
2940 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
2941 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
2942 &server_session_timeout,
2944 GNUNET_log (TIMEOUT_LOG,
2945 "Timeout for session %p set to %s\n",
2947 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2953 * Increment session timeout due to activity session s
2955 * @param s the session
2958 server_reschedule_session_timeout (struct Session *s)
2960 GNUNET_assert (NULL != s);
2961 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
2963 GNUNET_SCHEDULER_cancel (s->timeout_task);
2964 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
2965 &server_session_timeout,
2967 GNUNET_log (TIMEOUT_LOG,
2968 "Timeout rescheduled for session %p set to %s\n",
2970 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2976 * Exit point from the plugin.
2982 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2984 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2985 struct HTTP_Server_Plugin *plugin = api->cls;
2986 struct Session *pos;
2987 struct Session *next;
2989 if (NULL == api->cls)
2991 /* Free for stub mode */
2995 plugin->in_shutdown = GNUNET_YES;
2996 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2997 _("Shutting down plugin `%s'\n"),
3000 if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
3002 GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
3003 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
3006 if (NULL != plugin->ext_addr)
3008 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3009 "Notifying transport to remove address `%s'\n",
3010 http_common_plugin_address_to_string (NULL,
3013 plugin->ext_addr_len));
3015 plugin->env->notify_address (plugin->env->cls,
3018 plugin->ext_addr_len,
3021 plugin->env->notify_address (plugin->env->cls,
3024 plugin->ext_addr_len,
3029 /* Stop to report addresses to transport service */
3030 server_stop_report_addresses (plugin);
3031 server_stop (plugin);
3032 next = plugin->head;
3033 while (NULL != (pos = next))
3036 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3037 "Removing left over session %p\n", pos);
3039 if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
3041 /* Notify transport immediately that this session is invalid */
3042 pos->session_ended = GNUNET_YES;
3043 plugin->env->session_end (plugin->env->cls, &pos->target, pos);
3045 server_delete_session (plugin, pos);
3049 GNUNET_free_non_null (plugin->external_hostname);
3050 GNUNET_free_non_null (plugin->ext_addr);
3051 GNUNET_free_non_null (plugin->server_addr_v4);
3052 GNUNET_free_non_null (plugin->server_addr_v6);
3054 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3055 _("Shutdown for plugin `%s' complete\n"),
3058 GNUNET_free (plugin);
3065 http_plugin_address_to_string (void *cls,
3070 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3072 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3078 * Function obtain the network type for a session
3080 * @param cls closure ('struct Plugin*')
3081 * @param session the session
3082 * @return the network type in HBO or GNUNET_SYSERR
3084 static enum GNUNET_ATS_Network_Type
3085 http_server_get_network (void *cls,
3086 struct Session *session)
3088 GNUNET_assert (NULL != session);
3089 return ntohl (session->ats_address_network_type);
3094 * Entry point for the plugin.
3100 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
3102 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
3103 struct GNUNET_TRANSPORT_PluginFunctions *api;
3104 struct HTTP_Server_Plugin *plugin;
3106 if (NULL == env->receive)
3108 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
3109 initialze the plugin or the API */
3110 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3112 api->address_to_string = &http_plugin_address_to_string;
3113 api->string_to_address = &http_common_plugin_string_to_address;
3114 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3117 plugin = GNUNET_new (struct HTTP_Server_Plugin);
3119 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3121 api->send = &http_server_plugin_send;
3122 api->disconnect_peer = &http_server_plugin_disconnect_peer;
3123 api->disconnect_session = &http_server_plugin_disconnect_session;
3124 api->query_keepalive_factor = &http_server_query_keepalive_factor;
3125 api->check_address = &http_server_plugin_address_suggested;
3126 api->get_session = &http_server_plugin_get_session;
3128 api->address_to_string = &http_plugin_address_to_string;
3129 api->string_to_address = &http_common_plugin_string_to_address;
3130 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3131 api->get_network = &http_server_get_network;
3132 api->update_session_timeout = &http_server_plugin_update_session_timeout;
3134 plugin->name = "transport-https_server";
3135 plugin->protocol = "https";
3137 plugin->name = "transport-http_server";
3138 plugin->protocol = "http";
3141 /* Configure plugin */
3142 if (GNUNET_SYSERR == server_configure_plugin (plugin))
3144 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3148 /* Check IPv6 support */
3149 if (GNUNET_YES == plugin->use_ipv6)
3150 plugin->use_ipv6 = server_check_ipv6_support (plugin);
3152 /* Report addresses to transport service */
3153 if (GNUNET_NO == plugin->external_only)
3154 server_start_report_addresses (plugin);
3156 if (GNUNET_SYSERR == server_start (plugin))
3158 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3164 /* end of plugin_transport_http_server.c */