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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 * Tell MHD that the connection should timeout after @a to seconds.
892 * @param plugin our plugin
893 * @param s session for which the timeout changes
894 * @param to timeout in seconds
897 server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
901 /* Setting timeouts for other connections */
902 if (NULL != s->server_recv)
904 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
905 "Setting timeout for %p to %u sec.\n",
907 MHD_set_connection_option (s->server_recv->mhd_conn,
908 MHD_CONNECTION_OPTION_TIMEOUT,
910 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
912 if (NULL != s->server_send)
914 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
915 "Setting timeout for %p to %u sec.\n",
917 MHD_set_connection_option (s->server_send->mhd_conn,
918 MHD_CONNECTION_OPTION_TIMEOUT,
920 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
926 * Parse incoming URL for tag and target
928 * @param plugin plugin
929 * @param url incoming url
930 * @param target where to store the target
931 * @param tag where to store the tag
932 * @return #GNUNET_OK on success, #GNUNET_SYSERR on error
935 server_parse_url (struct HTTP_Server_Plugin *plugin,
937 struct GNUNET_PeerIdentity *target,
940 char * tag_start = NULL;
941 char * tag_end = NULL;
942 char * target_start = NULL;
943 char * separator = NULL;
944 unsigned int hash_length;
945 unsigned long int ctag;
948 * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
953 return GNUNET_SYSERR;
958 separator = strrchr (url, ';');
960 if (NULL == separator)
962 if (DEBUG_URL_PARSE) GNUNET_break (0);
963 return GNUNET_SYSERR;
965 tag_start = separator + 1;
967 if (strlen (tag_start) == 0)
969 /* No tag after separator */
970 if (DEBUG_URL_PARSE) GNUNET_break (0);
971 return GNUNET_SYSERR;
973 ctag = strtoul (tag_start, &tag_end, 10);
976 /* tag == 0 , invalid */
977 if (DEBUG_URL_PARSE) GNUNET_break (0);
978 return GNUNET_SYSERR;
980 if ((ctag == ULONG_MAX) && (ERANGE == errno))
982 /* out of range: > ULONG_MAX */
983 if (DEBUG_URL_PARSE) GNUNET_break (0);
984 return GNUNET_SYSERR;
986 if (ctag > UINT32_MAX)
988 /* out of range: > UINT32_MAX */
989 if (DEBUG_URL_PARSE) GNUNET_break (0);
990 return GNUNET_SYSERR;
992 (*tag) = (uint32_t) ctag;
995 /* no char after tag */
996 if (DEBUG_URL_PARSE) GNUNET_break (0);
997 return GNUNET_SYSERR;
999 if (url[strlen(url)] != tag_end[0])
1001 /* there are more not converted chars after tag */
1002 if (DEBUG_URL_PARSE) GNUNET_break (0);
1003 return GNUNET_SYSERR;
1005 if (DEBUG_URL_PARSE)
1006 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1007 "Found tag `%u' in url\n", (*tag));
1009 /* convert peer id */
1010 target_start = strrchr (url, '/');
1011 if (NULL == target_start)
1013 /* no leading '/' */
1014 target_start = (char *) url;
1017 hash_length = separator - target_start;
1018 if (hash_length != plugin->peer_id_length)
1020 /* no char after tag */
1021 if (DEBUG_URL_PARSE) GNUNET_break (0);
1022 return GNUNET_SYSERR;
1025 GNUNET_CRYPTO_eddsa_public_key_from_string (target_start,
1027 &target->public_key))
1029 /* hash conversion failed */
1030 if (DEBUG_URL_PARSE) GNUNET_break (0);
1031 return GNUNET_SYSERR;
1033 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1035 "Found target `%s' in URL\n",
1036 GNUNET_i2s_full (target));
1042 * Lookup a mhd connection and create one if none is found
1044 * @param plugin the plugin handle
1045 * @param mhd_connection the incoming mhd_connection
1046 * @param url incoming requested URL
1047 * @param method PUT or GET
1048 * @return the server connecetion
1050 static struct ServerConnection *
1051 server_lookup_connection (struct HTTP_Server_Plugin *plugin,
1052 struct MHD_Connection *mhd_connection, const char *url,
1055 struct Session *s = NULL;
1056 struct ServerConnection *sc = NULL;
1057 const union MHD_ConnectionInfo *conn_info;
1058 struct GNUNET_ATS_Information ats;
1059 struct HttpAddress *addr;
1061 struct GNUNET_PeerIdentity target;
1063 int direction = GNUNET_SYSERR;
1066 conn_info = MHD_get_connection_info (mhd_connection,
1067 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
1068 if ((conn_info->client_addr->sa_family != AF_INET) &&
1069 (conn_info->client_addr->sa_family != AF_INET6))
1071 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1072 "New %s connection from %s\n", method, url);
1074 if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
1076 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1077 "Invalid url %s\n", url);
1080 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1081 direction = _RECEIVE;
1082 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
1086 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1087 "Invalid method %s connection from %s\n", method, url);
1091 plugin->cur_connections++;
1092 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1093 "New %s connection from %s with tag %u (%u of %u)\n",
1095 GNUNET_i2s (&target), tag,
1096 plugin->cur_connections, plugin->max_connections);
1097 /* find duplicate session */
1101 if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
1108 if ((_RECEIVE == direction) && (NULL != s->server_recv))
1110 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1111 "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
1112 GNUNET_i2s (&target),
1117 if ((_SEND == direction) && (NULL != s->server_send))
1119 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1120 "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
1121 GNUNET_i2s (&target),
1128 /* create new session */
1129 switch (conn_info->client_addr->sa_family)
1132 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
1133 addr_len = http_common_address_get_size (addr);
1134 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
1137 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
1138 addr_len = http_common_address_get_size (addr);
1139 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
1142 /* external host name */
1143 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1144 ats.type = htonl (GNUNET_ATS_NET_WAN);
1148 s = GNUNET_new (struct Session);
1149 memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
1152 s->addrlen = addr_len;
1153 s->ats_address_network_type = ats.value;
1154 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
1156 s->server_recv = NULL;
1157 s->server_send = NULL;
1158 s->session_passed = GNUNET_NO;
1159 s->session_ended = GNUNET_NO;
1160 s->connect_in_progress = GNUNET_YES;
1161 server_start_session_timeout(s);
1162 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1164 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1165 "Creating new session %p for peer `%s' connecting from `%s'\n",
1166 s, GNUNET_i2s (&target),
1167 http_common_plugin_address_to_string (NULL,
1171 sc = GNUNET_new (struct ServerConnection);
1172 if (conn_info->client_addr->sa_family == AF_INET)
1173 sc->mhd_daemon = plugin->server_v4;
1174 if (conn_info->client_addr->sa_family == AF_INET6)
1175 sc->mhd_daemon = plugin->server_v6;
1176 sc->mhd_conn = mhd_connection;
1177 sc->direction = direction;
1178 sc->connected = GNUNET_NO;
1180 if (direction == _SEND)
1181 s->server_send = sc;
1182 if (direction == _RECEIVE)
1183 s->server_recv = sc;
1185 if ((NULL != s->server_send) && (NULL != s->server_recv))
1187 s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
1188 plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
1191 if ((NULL == s->server_recv) || (NULL == s->server_send))
1193 to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1194 MHD_set_connection_option (mhd_connection,
1195 MHD_CONNECTION_OPTION_TIMEOUT, to);
1196 server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
1200 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1201 "Session %p for peer `%s' fully connected\n",
1202 s, GNUNET_i2s (&target));
1203 to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1204 server_mhd_connection_timeout (plugin, s, to);
1207 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1208 "Setting timeout for %p to %u sec.\n", sc, to);
1214 * Lookup a session for a server connection
1216 * @param plugin the plugin
1217 * @param sc the server connection
1218 * @return the session found or NULL
1220 static struct Session *
1221 server_lookup_session (struct HTTP_Server_Plugin *plugin,
1222 struct ServerConnection * sc)
1226 for (s = plugin->head; NULL != s; s = s->next)
1227 if ((s->server_recv == sc) || (s->server_send == sc))
1234 server_exist_session (struct HTTP_Server_Plugin *plugin,
1237 struct Session * head;
1239 for (head = plugin->head; head != NULL; head = head->next)
1247 * Callback called by MHD when it needs data to send
1249 * @param cls current session
1250 * @param pos position in buffer
1251 * @param buf the buffer to write data to
1252 * @param max max number of bytes available in buffer
1253 * @return bytes written to buffer
1256 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
1258 struct Session *s = cls;
1259 ssize_t bytes_read = 0;
1260 struct HTTP_Message *msg;
1263 if (GNUNET_NO == server_exist_session (s->plugin, s))
1269 bytes_read = GNUNET_MIN (msg->size - msg->pos,
1271 memcpy (buf, &msg->buf[msg->pos], bytes_read);
1272 msg->pos += bytes_read;
1274 /* removing message */
1275 if (msg->pos == msg->size)
1277 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1278 if (NULL != msg->transmit_cont)
1279 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
1280 msg->size, msg->size + msg->overhead);
1286 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1287 "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
1288 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers",
1289 s->plugin->protocol);
1290 GNUNET_STATISTICS_update (s->plugin->env->stats,
1291 stat_txt, -bytes_read, GNUNET_NO);
1292 GNUNET_free (stat_txt);
1293 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server",
1294 s->plugin->protocol);
1295 GNUNET_STATISTICS_update (s->plugin->env->stats,
1296 stat_txt, bytes_read, GNUNET_NO);
1297 GNUNET_free (stat_txt);
1304 * Callback called by MessageStreamTokenizer when a message has arrived
1306 * @param cls current session as closure
1307 * @param client client
1308 * @param message the message to be forwarded to transport service
1309 * @return #GNUNET_OK
1312 server_receive_mst_cb (void *cls, void *client,
1313 const struct GNUNET_MessageHeader *message)
1315 struct Session *s = cls;
1316 struct HTTP_Server_Plugin *plugin = s->plugin;
1317 struct GNUNET_ATS_Information atsi;
1318 struct GNUNET_TIME_Relative delay;
1321 if (GNUNET_NO == server_exist_session (s->plugin, s))
1325 atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1326 atsi.value = s->ats_address_network_type;
1327 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
1330 delay = plugin->env->receive (plugin->env->cls,
1335 plugin->env->update_address_metrics (plugin->env->cls,
1337 NULL, 0, s, &atsi, 1);
1339 GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
1340 GNUNET_STATISTICS_update (plugin->env->stats,
1341 stat_txt, ntohs (message->size), GNUNET_NO);
1342 GNUNET_free (stat_txt);
1344 s->session_passed = GNUNET_YES;
1345 s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
1346 if (delay.rel_value_us > 0)
1348 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1349 "Peer `%s' address `%s' next read delayed for %s\n",
1350 GNUNET_i2s (&s->target),
1351 http_common_plugin_address_to_string (NULL,
1353 s->addr, s->addrlen),
1354 GNUNET_STRINGS_relative_time_to_string (delay,
1357 server_reschedule_session_timeout (s);
1363 * MHD callback for a new incoming connection
1365 * @param cls the plugin handle
1366 * @param mhd_connection the mhd connection
1367 * @param url the requested URL
1368 * @param method GET or PUT
1369 * @param version HTTP version
1370 * @param upload_data upload data
1371 * @param upload_data_size sizeof upload data
1372 * @param httpSessionCache the session cache to remember the connection
1373 * @return MHD_YES if connection is accepted, MHD_NO on reject
1376 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
1377 const char *url, const char *method, const char *version,
1378 const char *upload_data, size_t * upload_data_size,
1379 void **httpSessionCache)
1381 struct HTTP_Server_Plugin *plugin = cls;
1384 struct ServerConnection *sc = *httpSessionCache;
1386 struct MHD_Response *response;
1388 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1389 _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
1391 plugin->cur_connections, plugin->max_connections,
1392 method, version, url, (*upload_data_size));
1394 GNUNET_assert (cls != NULL);
1397 /* new connection */
1398 sc = server_lookup_connection (plugin, mhd_connection, url, method);
1401 (*httpSessionCache) = sc;
1405 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
1406 MHD_add_response_header (response,
1407 MHD_HTTP_HEADER_CONTENT_TYPE,
1409 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1410 MHD_destroy_response (response);
1416 /* 'old' connection */
1417 if (NULL == server_lookup_session (plugin, sc))
1419 /* Session was already disconnected */
1424 /* existing connection */
1425 sc = (*httpSessionCache);
1427 GNUNET_assert (NULL != s);
1428 /* connection is to be disconnected */
1429 if (sc->disconnect == GNUNET_YES)
1431 /* Sent HTTP/1.1: 200 OK as response */
1432 response = MHD_create_response_from_data (strlen ("Thank you!"),
1435 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1436 MHD_destroy_response (response);
1439 GNUNET_assert (s != NULL);
1441 if (sc->direction == _SEND)
1443 response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1445 &server_send_callback, s,
1447 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1448 MHD_destroy_response (response);
1451 if (sc->direction == _RECEIVE)
1453 if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
1455 /* (*upload_data_size == 0) first callback when header are passed */
1456 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1457 "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
1459 GNUNET_i2s (&s->target),
1460 http_common_plugin_address_to_string (NULL,
1464 sc->connected = GNUNET_YES;
1467 else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
1469 /* (*upload_data_size == 0) when upload is complete */
1470 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1471 "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
1473 GNUNET_i2s (&s->target),
1474 http_common_plugin_address_to_string (NULL,
1478 sc->connected = GNUNET_NO;
1479 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
1480 response = MHD_create_response_from_data (strlen ("Thank you!"),
1483 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1484 MHD_destroy_response (response);
1487 else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
1489 /* (*upload_data_size > 0) for every segment received */
1490 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1491 "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
1493 GNUNET_i2s (&s->target),
1494 http_common_plugin_address_to_string (NULL,
1499 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
1501 if ((s->next_receive.abs_value_us <= now.abs_value_us))
1503 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1504 "PUT with %u bytes forwarded to MST\n",
1506 if (s->msg_tk == NULL)
1508 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
1510 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
1511 *upload_data_size, GNUNET_NO, GNUNET_NO);
1512 server_mhd_connection_timeout (plugin, s,
1513 GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
1514 (*upload_data_size) = 0;
1518 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1519 "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
1521 GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (s->next_receive),
1537 * Callback from MHD when a connection disconnects
1539 * @param cls closure with the `struct HTTP_Server_Plugin *`
1540 * @param connection the disconnected MHD connection
1541 * @param httpSessionCache the pointer to distinguish
1544 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
1545 void **httpSessionCache)
1547 struct HTTP_Server_Plugin *plugin = cls;
1548 struct ServerConnection *sc = *httpSessionCache;
1549 struct Session *s = NULL;
1550 struct Session *t = NULL;
1552 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
1554 "Disconnect for connection %p \n", sc);
1559 if (NULL == (s = server_lookup_session (plugin, sc)))
1561 for (t = plugin->head; t != NULL; t = t->next)
1567 if (sc->direction == _SEND)
1569 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1570 "Peer `%s' connection %p, GET on address `%s' disconnected\n",
1571 GNUNET_i2s (&s->target), s->server_send,
1572 http_common_plugin_address_to_string (NULL,
1574 s->addr, s->addrlen));
1575 s->server_send = NULL;
1576 if (NULL != (s->server_recv))
1578 s->server_recv->disconnect = GNUNET_YES;
1579 GNUNET_assert (NULL != s->server_recv->mhd_conn);
1580 #if MHD_VERSION >= 0x00090E00
1581 MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1584 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
1587 if (sc->direction == _RECEIVE)
1589 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1590 "Peer `%s' connection %p PUT on address `%s' disconnected\n",
1591 GNUNET_i2s (&s->target), s->server_recv,
1592 http_common_plugin_address_to_string (NULL,
1594 s->addr, s->addrlen));
1595 s->server_recv = NULL;
1596 /* Do not terminate session when PUT disconnects
1597 if (NULL != (s->server_send))
1599 s->server_send->disconnect = GNUNET_YES;
1600 GNUNET_assert (NULL != s->server_send->mhd_conn);
1601 #if MHD_VERSION >= 0x00090E00
1602 MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1605 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
1607 if (s->msg_tk != NULL)
1609 GNUNET_SERVER_mst_destroy (s->msg_tk);
1615 plugin->cur_connections--;
1617 if ((s->server_send == NULL) && (s->server_recv == NULL))
1619 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1620 "Peer `%s' on address `%s' disconnected\n",
1621 GNUNET_i2s (&s->target),
1622 http_common_plugin_address_to_string (NULL,
1624 s->addr, s->addrlen));
1626 if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
1628 /* Notify transport immediately that this session is invalid */
1629 s->session_ended = GNUNET_YES;
1630 plugin->env->session_end (plugin->env->cls, &s->target, s);
1632 server_delete_session (plugin, s);
1638 * Check if incoming connection is accepted.
1640 * @param cls plugin as closure
1641 * @param addr address of incoming connection
1642 * @param addr_len address length of incoming connection
1643 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
1646 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
1648 struct HTTP_Server_Plugin *plugin = cls;
1650 if (plugin->cur_connections <= plugin->max_connections)
1652 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1653 _("Accepting connection (%u of %u) from `%s'\n"),
1654 plugin->cur_connections, plugin->max_connections,
1655 GNUNET_a2s (addr, addr_len));
1660 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1661 _("Server reached maximum number connections (%u), rejecting new connection\n"),
1662 plugin->max_connections);
1669 server_log (void *arg, const char *fmt, va_list ap)
1673 vsnprintf (text, sizeof (text), fmt, ap);
1675 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
1680 * Call MHD IPv4 to process pending requests and then go back
1681 * and schedule the next run.
1682 * @param cls plugin as closure
1683 * @param tc task context
1686 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1688 struct HTTP_Server_Plugin *plugin = cls;
1690 GNUNET_assert (cls != NULL);
1692 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1693 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1696 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1697 "Running IPv4 server\n");
1699 plugin->server_v4_immediately = GNUNET_NO;
1700 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
1701 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1706 * Call MHD IPv6 to process pending requests and then go back
1707 * and schedule the next run.
1708 * @param cls plugin as closure
1709 * @param tc task context
1712 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1714 struct HTTP_Server_Plugin *plugin = cls;
1716 GNUNET_assert (cls != NULL);
1717 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1718 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1721 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1722 "Running IPv6 server\n");
1724 plugin->server_v6_immediately = GNUNET_NO;
1725 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
1726 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1731 * Function that queries MHD's select sets and
1732 * starts the task waiting for them.
1734 * @param plugin plugin
1735 * @param daemon_handle the MHD daemon handle
1736 * @return gnunet task identifier
1738 static GNUNET_SCHEDULER_TaskIdentifier
1739 server_schedule (struct HTTP_Server_Plugin *plugin,
1740 struct MHD_Daemon *daemon_handle,
1743 GNUNET_SCHEDULER_TaskIdentifier ret;
1747 struct GNUNET_NETWORK_FDSet *wrs;
1748 struct GNUNET_NETWORK_FDSet *wws;
1749 struct GNUNET_NETWORK_FDSet *wes;
1751 MHD_UNSIGNED_LONG_LONG timeout;
1752 static unsigned long long last_timeout = 0;
1755 struct GNUNET_TIME_Relative tv;
1757 if (GNUNET_YES == plugin->in_shutdown)
1758 return GNUNET_SCHEDULER_NO_TASK;
1760 ret = GNUNET_SCHEDULER_NO_TASK;
1764 wrs = GNUNET_NETWORK_fdset_create ();
1765 wes = GNUNET_NETWORK_fdset_create ();
1766 wws = GNUNET_NETWORK_fdset_create ();
1768 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1769 haveto = MHD_get_timeout (daemon_handle, &timeout);
1770 if (haveto == MHD_YES)
1772 if (timeout != last_timeout)
1775 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1776 "SELECT Timeout changed from %llu to %llu (ms)\n",
1777 last_timeout, timeout);
1778 last_timeout = timeout;
1780 if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
1781 tv.rel_value_us = (uint64_t) timeout * 1000LL;
1783 tv = GNUNET_TIME_UNIT_SECONDS;
1786 tv = GNUNET_TIME_UNIT_SECONDS;
1787 /* Force immediate run, since we have outbound data to send */
1788 if (now == GNUNET_YES)
1789 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1790 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1791 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1792 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1794 if (daemon_handle == plugin->server_v4)
1796 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1798 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1799 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1802 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1803 "Scheduling IPv4 server task in %llu ms\n", tv);
1806 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1808 &server_v4_run, plugin);
1810 if (daemon_handle == plugin->server_v6)
1812 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1814 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1815 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1818 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1819 "Scheduling IPv6 server task in %llu ms\n", tv);
1822 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1824 &server_v6_run, plugin);
1826 GNUNET_NETWORK_fdset_destroy (wrs);
1827 GNUNET_NETWORK_fdset_destroy (wws);
1828 GNUNET_NETWORK_fdset_destroy (wes);
1835 * Load ssl certificate from file
1837 * @param file filename
1838 * @return content of the file
1841 server_load_file (const char *file)
1843 struct GNUNET_DISK_FileHandle *gn_file;
1847 if (GNUNET_OK != GNUNET_DISK_file_size (file,
1848 &fsize, GNUNET_NO, GNUNET_YES))
1850 text = GNUNET_malloc (fsize + 1);
1852 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
1853 GNUNET_DISK_PERM_USER_READ);
1854 if (gn_file == NULL)
1859 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
1862 GNUNET_DISK_file_close (gn_file);
1866 GNUNET_DISK_file_close (gn_file);
1874 * Load ssl certificate
1876 * @param plugin the plugin
1877 * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
1880 server_load_certificate (struct HTTP_Server_Plugin *plugin)
1882 int res = GNUNET_OK;
1888 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1889 "KEY_FILE", &key_file))
1891 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1892 plugin->name, "CERT_FILE");
1893 return GNUNET_SYSERR;
1896 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1897 "CERT_FILE", &cert_file))
1899 GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
1900 plugin->name, "CERT_FILE");
1901 GNUNET_free (key_file);
1902 return GNUNET_SYSERR;
1904 /* Get crypto init string from config. If not present, use
1907 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
1910 &plugin->crypto_init))
1911 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1912 "Using crypto init string `%s'\n",
1913 plugin->crypto_init);
1915 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1916 "Using default crypto init string \n");
1918 /* read key & certificates from file */
1919 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1920 "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
1921 key_file, cert_file);
1923 plugin->key = server_load_file (key_file);
1924 plugin->cert = server_load_file (cert_file);
1926 if ((plugin->key == NULL) || (plugin->cert == NULL))
1928 struct GNUNET_OS_Process *cert_creation;
1930 GNUNET_free_non_null (plugin->key);
1932 GNUNET_free_non_null (plugin->cert);
1933 plugin->cert = NULL;
1935 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1936 "No usable TLS certificate found, creating certificate\n");
1939 GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
1940 "gnunet-transport-certificate-creation",
1941 "gnunet-transport-certificate-creation",
1942 key_file, cert_file, NULL);
1943 if (cert_creation == NULL)
1945 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1947 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
1948 GNUNET_free (key_file);
1949 GNUNET_free (cert_file);
1951 GNUNET_free_non_null (plugin->key);
1953 GNUNET_free_non_null (plugin->cert);
1954 plugin->cert = NULL;
1955 GNUNET_free_non_null (plugin->crypto_init);
1956 plugin->crypto_init = NULL;
1958 return GNUNET_SYSERR;
1960 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
1961 GNUNET_OS_process_destroy (cert_creation);
1963 plugin->key = server_load_file (key_file);
1964 plugin->cert = server_load_file (cert_file);
1967 if ((plugin->key == NULL) || (plugin->cert == NULL))
1969 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1971 _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
1972 key_file, cert_file);
1973 GNUNET_free (key_file);
1974 GNUNET_free (cert_file);
1976 GNUNET_free_non_null (plugin->key);
1978 GNUNET_free_non_null (plugin->cert);
1979 plugin->cert = NULL;
1980 GNUNET_free_non_null (plugin->crypto_init);
1981 plugin->crypto_init = NULL;
1983 return GNUNET_SYSERR;
1985 GNUNET_free (key_file);
1986 GNUNET_free (cert_file);
1987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
1994 * Start the HTTP server
1996 * @param plugin the plugin handle
1997 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2000 server_start (struct HTTP_Server_Plugin *plugin)
2002 unsigned int timeout;
2004 GNUNET_assert (NULL != plugin);
2007 if (GNUNET_SYSERR == server_load_certificate (plugin))
2009 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2010 "Could not load or create server certificate! Loading plugin failed!\n");
2011 return GNUNET_SYSERR;
2016 #if MHD_VERSION >= 0x00090E00
2017 timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2018 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2019 "MHD can set timeout per connection! Default time out %u sec.\n",
2022 timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
2023 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2024 "MHD cannot set timeout per connection! Default time out %u sec.\n",
2028 plugin->server_v4 = NULL;
2029 if (plugin->use_ipv4 == GNUNET_YES)
2031 plugin->server_v4 = MHD_start_daemon (
2038 MHD_NO_FLAG, plugin->port,
2039 &server_accept_cb, plugin,
2040 &server_access_cb, plugin,
2041 MHD_OPTION_SOCK_ADDR,
2042 (struct sockaddr_in *)
2043 plugin->server_addr_v4,
2044 MHD_OPTION_CONNECTION_LIMIT,
2046 plugin->max_connections,
2048 MHD_OPTION_HTTPS_PRIORITIES,
2049 plugin->crypto_init,
2050 MHD_OPTION_HTTPS_MEM_KEY,
2052 MHD_OPTION_HTTPS_MEM_CERT,
2055 MHD_OPTION_CONNECTION_TIMEOUT,
2057 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2059 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2060 MHD_OPTION_NOTIFY_COMPLETED,
2061 &server_disconnect_cb, plugin,
2062 MHD_OPTION_EXTERNAL_LOGGER,
2063 server_log, NULL, MHD_OPTION_END);
2064 if (plugin->server_v4 == NULL)
2066 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2067 "Failed to start %s IPv4 server component on port %u\n",
2068 plugin->name, plugin->port);
2071 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
2075 plugin->server_v6 = NULL;
2076 if (plugin->use_ipv6 == GNUNET_YES)
2078 plugin->server_v6 = MHD_start_daemon (
2085 MHD_USE_IPv6, plugin->port,
2086 &server_accept_cb, plugin,
2087 &server_access_cb, plugin,
2088 MHD_OPTION_SOCK_ADDR,
2089 (struct sockaddr_in6 *)
2090 plugin->server_addr_v6,
2091 MHD_OPTION_CONNECTION_LIMIT,
2093 plugin->max_connections,
2095 MHD_OPTION_HTTPS_PRIORITIES,
2096 plugin->crypto_init,
2097 MHD_OPTION_HTTPS_MEM_KEY,
2099 MHD_OPTION_HTTPS_MEM_CERT,
2102 MHD_OPTION_CONNECTION_TIMEOUT,
2104 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2106 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2107 MHD_OPTION_NOTIFY_COMPLETED,
2108 &server_disconnect_cb, plugin,
2109 MHD_OPTION_EXTERNAL_LOGGER,
2110 server_log, NULL, MHD_OPTION_END);
2111 if (plugin->server_v6 == NULL)
2113 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2114 "Failed to start %s IPv6 server component on port %u\n",
2115 plugin->name, plugin->port);
2118 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
2122 if ((plugin->server_v6 == NULL) && (plugin->server_v4 == NULL))
2124 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2125 "%s %s server component started on port %u\n",
2126 msg, plugin->name, plugin->port);
2128 return GNUNET_SYSERR;
2130 else if ((plugin->server_v6 != NULL) && (plugin->server_v4 != NULL))
2131 msg = "IPv4 and IPv6";
2132 else if (plugin->server_v6 != NULL)
2134 else if (plugin->server_v4 != NULL)
2136 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2137 "%s %s server component started on port %u\n",
2138 msg, plugin->name, plugin->port);
2144 server_stop (struct HTTP_Server_Plugin *plugin)
2146 if (plugin->server_v4 != NULL)
2148 MHD_stop_daemon (plugin->server_v4);
2149 plugin->server_v4 = NULL;
2151 if ( plugin->server_v6 != NULL)
2153 MHD_stop_daemon (plugin->server_v6);
2154 plugin->server_v6 = NULL;
2158 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
2160 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
2161 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
2164 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
2166 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
2167 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
2170 GNUNET_free_non_null (plugin->crypto_init);
2171 GNUNET_free_non_null (plugin->cert);
2172 GNUNET_free_non_null (plugin->key);
2175 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2176 "%s server component stopped\n", plugin->name);
2181 * Add an address to the server's set of addresses and notify transport
2183 * @param cls the plugin handle
2184 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2185 * @param addr the address
2186 * @param addrlen address length
2189 server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
2192 struct HTTP_Server_Plugin *plugin = cls;
2193 struct HttpAddressWrapper *w = NULL;
2195 w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
2196 w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2197 if (NULL == w->address)
2202 w->addrlen = http_common_address_get_size (w->address);
2204 GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
2205 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2206 "Notifying transport to add address `%s'\n",
2207 http_common_plugin_address_to_string (NULL,
2209 w->address, w->addrlen));
2211 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2213 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2219 * Remove an address from the server's set of addresses and notify transport
2221 * @param cls the plugin handle
2222 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2223 * @param addr the address
2224 * @param addrlen address length
2227 server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
2230 struct HTTP_Server_Plugin *plugin = cls;
2231 struct HttpAddressWrapper *w = plugin->addr_head;
2233 void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2236 saddr_len = http_common_address_get_size (saddr);
2240 if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
2244 GNUNET_free (saddr);
2249 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2250 "Notifying transport to remove address `%s'\n",
2251 http_common_plugin_address_to_string (NULL,
2253 w->address, w->addrlen));
2254 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2256 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2258 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2260 GNUNET_free (w->address);
2267 * Our external IP address/port mapping has changed.
2269 * @param cls closure, the 'struct LocalAddrList'
2270 * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
2271 * the previous (now invalid) one
2272 * @param addr either the previous or the new public IP address
2273 * @param addrlen actual lenght of the address
2276 server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
2279 GNUNET_assert (cls != NULL);
2280 struct HTTP_Server_Plugin *plugin = cls;
2282 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2283 "NAT called to %s address `%s'\n",
2284 (add_remove == GNUNET_NO) ? "remove" : "add",
2285 GNUNET_a2s (addr, addrlen));
2287 if (AF_INET == addr->sa_family)
2289 struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
2291 if (GNUNET_NO == plugin->use_ipv4)
2294 if ((NULL != plugin->server_addr_v4) &&
2295 (0 != memcmp (&plugin->server_addr_v4->sin_addr,
2296 &s4->sin_addr, sizeof (struct in_addr))))
2298 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2299 "Skipping address `%s' (not bindto address)\n",
2300 GNUNET_a2s (addr, addrlen));
2305 if (AF_INET6 == addr->sa_family)
2307 struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
2308 if (GNUNET_NO == plugin->use_ipv6)
2311 if ((NULL != plugin->server_addr_v6) &&
2312 (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
2313 &s6->sin6_addr, sizeof (struct in6_addr))))
2315 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2316 "Skipping address `%s' (not bindto address)\n",
2317 GNUNET_a2s (addr, addrlen));
2325 server_add_address (cls, add_remove, addr, addrlen);
2328 server_remove_address (cls, add_remove, addr, addrlen);
2335 * Get valid server addresses
2337 * @param plugin the plugin handle
2338 * @param service_name the servicename
2339 * @param cfg configuration handle
2340 * @param addrs addresses
2341 * @param addr_lens address length
2342 * @return number of addresses
2345 server_get_addresses (struct HTTP_Server_Plugin *plugin,
2346 const char *service_name,
2347 const struct GNUNET_CONFIGURATION_Handle *cfg,
2348 struct sockaddr ***addrs, socklen_t ** addr_lens)
2351 unsigned long long port;
2352 struct addrinfo hints;
2353 struct addrinfo *res;
2354 struct addrinfo *pos;
2355 struct addrinfo *next;
2359 struct sockaddr **saddrs;
2360 socklen_t *saddrlens;
2366 disablev6 = !plugin->use_ipv6;
2369 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
2371 GNUNET_break (GNUNET_OK ==
2372 GNUNET_CONFIGURATION_get_value_number (cfg, service_name,
2376 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2378 ("Require valid port number for service in configuration!\n"));
2379 return GNUNET_SYSERR;
2384 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2385 "Starting in listen only mode\n");
2386 return -1; /* listen only */
2390 if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
2392 GNUNET_break (GNUNET_OK ==
2393 GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
2394 "BINDTO", &hostname));
2399 if (hostname != NULL)
2401 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2402 "Resolving `%s' since that is where `%s' will bind to.\n",
2403 hostname, service_name);
2404 memset (&hints, 0, sizeof (struct addrinfo));
2406 hints.ai_family = AF_INET;
2407 if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
2410 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
2411 hostname, gai_strerror (ret));
2412 GNUNET_free (hostname);
2413 return GNUNET_SYSERR;
2417 while (NULL != (pos = next))
2419 next = pos->ai_next;
2420 if ((disablev6) && (pos->ai_family == AF_INET6))
2426 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2427 _("Failed to find %saddress for `%s'.\n"),
2428 disablev6 ? "IPv4 " : "", hostname);
2430 GNUNET_free (hostname);
2431 return GNUNET_SYSERR;
2434 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2435 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2438 while (NULL != (pos = next))
2440 next = pos->ai_next;
2441 if ((disablev6) && (pos->ai_family == AF_INET6))
2443 if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
2444 continue; /* not TCP */
2445 if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
2446 continue; /* huh? */
2447 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2448 "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
2450 if (pos->ai_family == AF_INET)
2452 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
2453 saddrlens[i] = pos->ai_addrlen;
2454 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2455 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2456 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2460 GNUNET_assert (pos->ai_family == AF_INET6);
2461 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
2462 saddrlens[i] = pos->ai_addrlen;
2463 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2464 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2465 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2469 GNUNET_free (hostname);
2475 /* will bind against everything, just set port */
2481 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2482 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2484 saddrlens[i] = sizeof (struct sockaddr_in);
2485 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2486 #if HAVE_SOCKADDR_IN_SIN_LEN
2487 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
2489 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2490 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2496 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2497 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2499 saddrlens[i] = sizeof (struct sockaddr_in6);
2500 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2501 #if HAVE_SOCKADDR_IN_SIN_LEN
2502 ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
2504 ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
2505 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
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[1];
2512 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2513 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2517 *addr_lens = saddrlens;
2523 * Ask NAT for addresses
2525 * @param plugin the plugin handle
2528 server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
2530 int res = GNUNET_OK;
2531 struct sockaddr **addrs;
2532 socklen_t *addrlens;
2534 res = server_get_addresses (plugin,
2535 plugin->name, plugin->env->cfg,
2537 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2538 _("Found %u addresses to report to NAT service\n"), res);
2540 if (GNUNET_SYSERR == res)
2547 GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
2549 (const struct sockaddr **) addrs, addrlens,
2550 &server_nat_port_map_callback, NULL, plugin);
2554 GNUNET_assert (addrs[res] != NULL);
2555 GNUNET_free (addrs[res]);
2557 GNUNET_free_non_null (addrs);
2558 GNUNET_free_non_null (addrlens);
2563 * Stop NAT for addresses
2565 * @param plugin the plugin handle
2568 server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
2570 /* Stop NAT handle */
2571 if (NULL != plugin->nat)
2572 GNUNET_NAT_unregister (plugin->nat);
2574 /* Clean up addresses */
2575 struct HttpAddressWrapper *w;
2577 while (plugin->addr_head != NULL)
2579 w = plugin->addr_head;
2580 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2581 GNUNET_free (w->address);
2588 * Check if IPv6 supported on this system
2590 * @param plugin the plugin handle
2591 * @return GNUNET_YES on success, else GNUNET_NO
2594 server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
2596 struct GNUNET_NETWORK_Handle *desc = NULL;
2597 int res = GNUNET_NO;
2599 /* Probe IPv6 support */
2600 desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
2603 if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
2606 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
2608 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2610 ("Disabling IPv6 since it is not supported on this system!\n"));
2615 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
2619 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2620 "Testing IPv6 on this system: %s\n",
2621 (res == GNUNET_YES) ? "successful" : "failed");
2627 * Notify server about our external hostname
2630 * @param tc task context (unused)
2633 server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2635 struct HTTP_Server_Plugin *plugin = cls;
2639 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2640 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2643 GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
2645 urlen = strlen (url) + 1;
2646 plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
2647 plugin->ext_addr->options = htonl(plugin->options);
2648 plugin->ext_addr->urlen = htonl (urlen);
2649 plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
2650 memcpy (&plugin->ext_addr[1], url, urlen);
2652 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2653 "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
2656 if (GNUNET_YES == plugin->verify_external_hostname)
2657 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2658 "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
2659 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2660 plugin->ext_addr, plugin->ext_addr_len,
2663 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2664 plugin->ext_addr, plugin->ext_addr_len,
2671 * Configure the plugin
2673 * @param plugin plugin handle
2674 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2677 server_configure_plugin (struct HTTP_Server_Plugin *plugin)
2679 unsigned long long port;
2680 unsigned long long max_connections;
2681 char *bind4_address = NULL;
2682 char *bind6_address = NULL;
2683 char *eh_tmp = NULL;
2684 int external_hostname_use_port;
2687 if (GNUNET_CONFIGURATION_have_value
2688 (plugin->env->cfg, plugin->name, "USE_IPv4"))
2691 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2695 plugin->use_ipv4 = GNUNET_YES;
2696 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2697 _("IPv4 support is %s\n"),
2698 (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
2701 if (GNUNET_CONFIGURATION_have_value
2702 (plugin->env->cfg, plugin->name, "USE_IPv6"))
2705 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2709 plugin->use_ipv6 = GNUNET_YES;
2710 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2711 _("IPv6 support is %s\n"),
2712 (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
2714 if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
2716 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2718 ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
2720 return GNUNET_SYSERR;
2723 /* Reading port number from config file */
2725 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
2726 "PORT", &port)) || (port > 65535))
2728 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2729 _("Port is required! Fix in configuration\n"),
2731 return GNUNET_SYSERR;
2733 plugin->port = port;
2735 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2736 _("Using port %u\n"), plugin->port);
2738 if ((plugin->use_ipv4 == GNUNET_YES) &&
2739 (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
2740 plugin->name, "BINDTO", &bind4_address)))
2742 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2743 "Binding %s plugin to specific IPv4 address: `%s'\n",
2744 plugin->protocol, bind4_address);
2745 plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
2746 if (1 != inet_pton (AF_INET, bind4_address,
2747 &plugin->server_addr_v4->sin_addr))
2749 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2751 ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
2753 GNUNET_free (bind4_address);
2754 GNUNET_free (plugin->server_addr_v4);
2755 plugin->server_addr_v4 = NULL;
2756 return GNUNET_SYSERR;
2760 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2761 _("Binding to IPv4 address %s\n"), bind4_address);
2762 plugin->server_addr_v4->sin_family = AF_INET;
2763 plugin->server_addr_v4->sin_port = htons (plugin->port);
2765 GNUNET_free (bind4_address);
2768 if ((plugin->use_ipv6 == GNUNET_YES) &&
2770 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2771 "BINDTO6", &bind6_address)))
2773 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2774 "Binding %s plugin to specific IPv6 address: `%s'\n",
2775 plugin->protocol, bind6_address);
2776 plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
2778 inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
2780 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2782 ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
2784 GNUNET_free (bind6_address);
2785 GNUNET_free (plugin->server_addr_v6);
2786 plugin->server_addr_v6 = NULL;
2787 return GNUNET_SYSERR;
2791 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2792 _("Binding to IPv6 address %s\n"), bind6_address);
2793 plugin->server_addr_v6->sin6_family = AF_INET6;
2794 plugin->server_addr_v6->sin6_port = htons (plugin->port);
2796 GNUNET_free (bind6_address);
2799 plugin->verify_external_hostname = GNUNET_NO;
2801 plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2802 "VERIFY_EXTERNAL_HOSTNAME");
2803 if (GNUNET_SYSERR == plugin->verify_external_hostname)
2804 plugin->verify_external_hostname = GNUNET_NO;
2805 if (GNUNET_YES == plugin->verify_external_hostname)
2806 plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
2808 external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2809 "EXTERNAL_HOSTNAME_USE_PORT");
2810 if (GNUNET_SYSERR == external_hostname_use_port)
2811 external_hostname_use_port = GNUNET_NO;
2814 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2815 "EXTERNAL_HOSTNAME", &eh_tmp))
2819 char * pos_url = NULL;
2821 if (NULL != strstr(eh_tmp, "://"))
2823 tmp = &strstr(eh_tmp, "://")[3];
2828 if (GNUNET_YES == external_hostname_use_port)
2830 if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
2834 GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
2837 GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
2840 plugin->external_hostname = GNUNET_strdup (tmp);
2841 GNUNET_free (eh_tmp);
2843 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2844 _("Using external hostname `%s'\n"), plugin->external_hostname);
2845 plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
2847 /* Use only configured external hostname */
2848 if (GNUNET_CONFIGURATION_have_value
2849 (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
2851 plugin->external_only =
2852 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2853 "EXTERNAL_HOSTNAME_ONLY");
2856 plugin->external_only = GNUNET_NO;
2858 if (GNUNET_YES == plugin->external_only)
2859 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2860 _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
2863 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2864 "No external hostname configured\n");
2866 /* Optional parameters */
2867 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
2869 "MAX_CONNECTIONS", &max_connections))
2870 max_connections = 128;
2871 plugin->max_connections = max_connections;
2873 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2874 _("Maximum number of connections is %u\n"),
2875 plugin->max_connections);
2878 plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
2885 * Session was idle, so disconnect it
2887 * @param cls the session
2888 * @param tc task context
2891 server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2893 struct Session *s = cls;
2895 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
2896 GNUNET_log (TIMEOUT_LOG,
2897 "Session %p was idle for %s, disconnecting\n",
2899 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2902 /* call session destroy function */
2903 GNUNET_assert (GNUNET_OK ==
2904 http_server_plugin_disconnect_session (s->plugin, s));
2909 * Start session timeout for session s
2911 * @param s the session
2914 server_start_session_timeout (struct Session *s)
2916 GNUNET_assert (NULL != s);
2917 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
2918 s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
2919 &server_session_timeout,
2921 GNUNET_log (TIMEOUT_LOG,
2922 "Timeout for session %p set to %s\n",
2924 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2930 * Increment session timeout due to activity session s
2932 * @param s the session
2935 server_reschedule_session_timeout (struct Session *s)
2937 GNUNET_assert (NULL != s);
2938 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
2940 GNUNET_SCHEDULER_cancel (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 rescheduled for session %p set to %s\n",
2947 GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
2953 * Exit point from the plugin.
2959 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2961 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2962 struct HTTP_Server_Plugin *plugin = api->cls;
2963 struct Session *pos;
2964 struct Session *next;
2966 if (NULL == api->cls)
2968 /* Free for stub mode */
2972 plugin->in_shutdown = GNUNET_YES;
2973 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2974 _("Shutting down plugin `%s'\n"),
2977 if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
2979 GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
2980 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2983 if (NULL != plugin->ext_addr)
2985 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2986 "Notifying transport to remove address `%s'\n",
2987 http_common_plugin_address_to_string (NULL,
2990 plugin->ext_addr_len));
2992 plugin->env->notify_address (plugin->env->cls,
2995 plugin->ext_addr_len,
2998 plugin->env->notify_address (plugin->env->cls,
3001 plugin->ext_addr_len,
3006 /* Stop to report addresses to transport service */
3007 server_stop_report_addresses (plugin);
3008 server_stop (plugin);
3009 next = plugin->head;
3010 while (NULL != (pos = next))
3013 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3014 "Removing left over session %p\n", pos);
3016 if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
3018 /* Notify transport immediately that this session is invalid */
3019 pos->session_ended = GNUNET_YES;
3020 plugin->env->session_end (plugin->env->cls, &pos->target, pos);
3022 server_delete_session (plugin, pos);
3026 GNUNET_free_non_null (plugin->external_hostname);
3027 GNUNET_free_non_null (plugin->ext_addr);
3028 GNUNET_free_non_null (plugin->server_addr_v4);
3029 GNUNET_free_non_null (plugin->server_addr_v6);
3031 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3032 _("Shutdown for plugin `%s' complete\n"),
3035 GNUNET_free (plugin);
3040 const char *http_plugin_address_to_string (void *cls,
3045 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3047 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3054 * Function obtain the network type for a session
3056 * @param cls closure ('struct Plugin*')
3057 * @param session the session
3058 * @return the network type in HBO or GNUNET_SYSERR
3060 static enum GNUNET_ATS_Network_Type
3061 http_server_get_network (void *cls,
3062 struct Session *session)
3064 GNUNET_assert (NULL != session);
3065 return ntohl (session->ats_address_network_type);
3070 * Entry point for the plugin.
3076 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
3078 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
3079 struct GNUNET_TRANSPORT_PluginFunctions *api;
3080 struct HTTP_Server_Plugin *plugin;
3082 plugin = GNUNET_new (struct HTTP_Server_Plugin);
3085 if (NULL == env->receive)
3087 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
3088 initialze the plugin or the API */
3089 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3091 api->address_to_string = &http_plugin_address_to_string;
3092 api->string_to_address = &http_common_plugin_string_to_address;
3093 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3097 api = GNUNET_new (struct GNUNET_TRANSPORT_PluginFunctions);
3099 api->send = &http_server_plugin_send;
3100 api->disconnect_peer = &http_server_plugin_disconnect_peer;
3101 api->disconnect_session = &http_server_plugin_disconnect_session;
3102 api->check_address = &http_server_plugin_address_suggested;
3103 api->get_session = &http_server_plugin_get_session;
3105 api->address_to_string = &http_plugin_address_to_string;
3106 api->string_to_address = &http_common_plugin_string_to_address;
3107 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3108 api->get_network = &http_server_get_network;
3111 plugin->name = "transport-https_server";
3112 plugin->protocol = "https";
3114 plugin->name = "transport-http_server";
3115 plugin->protocol = "http";
3118 /* Configure plugin */
3119 if (GNUNET_SYSERR == server_configure_plugin (plugin))
3121 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3125 /* Check IPv6 support */
3126 if (GNUNET_YES == plugin->use_ipv6)
3127 plugin->use_ipv6 = server_check_ipv6_support (plugin);
3129 /* Report addresses to transport service */
3130 if (GNUNET_NO == plugin->external_only)
3131 server_start_report_addresses (plugin);
3133 if (GNUNET_SYSERR == server_start (plugin))
3135 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3141 /* end of plugin_transport_http_server.c */