2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
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6 it under the terms of the GNU General Public License as published
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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
28 #include "gnunet_common.h"
29 #include "gnunet_server_lib.h"
30 #include "gnunet_statistics_service.h"
31 #include "gnunet_transport_plugin.h"
32 #include "gnunet_nat_lib.h"
33 #include "plugin_transport_http_common.h"
34 #include <microhttpd.h>
39 #define PLUGIN_NAME "https_server"
40 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_server_init
41 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_server_done
43 #define PLUGIN_NAME "http_server"
44 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_server_init
45 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_server_done
48 #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>"
53 /* 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
166 /* Should this connection get disconnected? GNUNET_YES/NO */
169 /* For PUT connections: Is this the first or last callback with size 0 */
172 /* The session this server connection belongs to */
173 struct Session *session;
175 /* The MHD connection */
176 struct MHD_Connection *mhd_conn;
179 struct MHD_Daemon *mhd_daemon;
184 * Encapsulation of all of the state of the plugin.
186 struct HTTP_Server_Plugin
191 struct GNUNET_TRANSPORT_PluginEnvironment *env;
194 * Linked list head of open sessions.
197 struct Session *head;
200 * Linked list tail of open sessions.
202 struct Session *tail;
215 * My options to be included in the address
222 char *external_hostname;
225 * Verify external address
227 int verify_external_hostname;
231 * Maximum number of sockets the plugin can use
232 * Each http inbound /outbound connections are two connections
234 unsigned int max_connections;
237 * Current number of sockets the plugin can use
238 * Each http inbound /outbound connections are two connections
240 unsigned int cur_connections;
243 * Did we immediately end the session in disconnect_cb
253 * External hostname the plugin can be connected to, can be different to
254 * the host's FQDN, used e.g. for reverse proxying
256 struct HttpAddress *ext_addr;
259 * Notify transport only about external address
261 unsigned int external_only;
264 * External address length
284 * Task calling transport service about external address
286 GNUNET_SCHEDULER_TaskIdentifier notify_ext_task;
289 * NAT handle & address management
291 struct GNUNET_NAT_Handle *nat;
294 * List of own addresses
298 * IPv4 addresses DLL head
300 struct HttpAddressWrapper *addr_head;
303 * IPv4 addresses DLL tail
305 struct HttpAddressWrapper *addr_tail;
308 * IPv4 server socket to bind to
310 struct sockaddr_in *server_addr_v4;
313 * IPv6 server socket to bind to
315 struct sockaddr_in6 *server_addr_v6;
320 GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
325 GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
328 * The IPv4 server is scheduled to run asap
330 int server_v4_immediately;
333 * The IPv6 server is scheduled to run asap
335 int server_v6_immediately;
340 struct MHD_Daemon *server_v4;
345 struct MHD_Daemon *server_v6;
353 * Use RC4-128 instead of AES:
354 * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
374 * Wrapper to manage addresses
376 struct HttpAddressWrapper
381 struct HttpAddressWrapper *next;
384 * Linked list previous
386 struct HttpAddressWrapper *prev;
388 struct HttpAddress *address;
395 * Message to send using http
400 * next pointer for double linked list
402 struct HTTP_Message *next;
405 * previous pointer for double linked list
407 struct HTTP_Message *prev;
410 * buffer containing data to send
415 * amount of data already sent
425 * HTTP/S specific overhead
430 * Continuation function to call once the transmission buffer
431 * has again space available. NULL if there is no
432 * continuation to call.
434 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
437 * Closure for transmit_cont.
439 void *transmit_cont_cls;
444 * The http_server plugin handle
446 static struct HTTP_Server_Plugin * p;
450 * Start session timeout for session s
451 * @param s the session
454 server_start_session_timeout (struct Session *s);
458 * Increment session timeout due to activity for session s
459 * @param s the session
462 server_reschedule_session_timeout (struct Session *s);
466 * Cancel timeout for session s
467 * @param s the session
470 server_stop_session_timeout (struct Session *s);
474 * Disconnect a session s
475 * @param s the session
478 server_disconnect (struct Session *s);
482 * Does session s exist?
484 * @param plugin the plugin handle
485 * @param s the session
486 * @return GNUNET_YES on success, GNUNET_NO on error
489 server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s);
493 * Reschedule the execution of both IPv4 and IPv6 server
494 * @param plugin the plugin
495 * @param server which server to schedule v4 or v6?
496 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
500 server_reschedule (struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *server,
505 * Function that can be used by the transport service to transmit
506 * a message using the plugin. Note that in the case of a
507 * peer disconnecting, the continuation MUST be called
508 * prior to the disconnect notification itself. This function
509 * will be called with this peer's HELLO message to initiate
510 * a fresh connection to another peer.
513 * @param session which session must be used
514 * @param msgbuf the message to transmit
515 * @param msgbuf_size number of bytes in 'msgbuf'
516 * @param priority how important is the message (most plugins will
517 * ignore message priority and just FIFO)
518 * @param to how long to wait at most for the transmission (does not
519 * require plugins to discard the message after the timeout,
520 * just advisory for the desired delay; most plugins will ignore
522 * @param cont continuation to call once the message has
523 * been transmitted (or if the transport is ready
524 * for the next transmission call; or if the
525 * peer disconnected...); can be NULL
526 * @param cont_cls closure for cont
527 * @return number of bytes used (on the physical network, with overheads);
528 * -1 on hard errors (i.e. address invalid); 0 is a legal value
529 * and does NOT mean that the message was not transmitted (DV)
532 http_server_plugin_send (void *cls,
533 struct Session *session,
534 const char *msgbuf, size_t msgbuf_size,
535 unsigned int priority,
536 struct GNUNET_TIME_Relative to,
537 GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
539 struct HTTP_Server_Plugin *plugin = cls;
540 struct HTTP_Message *msg;
544 GNUNET_assert (plugin != NULL);
545 GNUNET_assert (session != NULL);
547 if (GNUNET_NO == server_exist_session (plugin, session))
550 return GNUNET_SYSERR;
552 if (NULL == session->server_send)
554 if (GNUNET_NO == session->connect_in_progress)
556 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, session->plugin->name,
557 "Session %p/connection %p: Sending message with %u bytes to peer `%s' with FAILED\n",
558 session, session->server_send,
559 msgbuf_size, GNUNET_i2s (&session->target));
561 return GNUNET_SYSERR;
566 if (GNUNET_YES == session->server_send->disconnect)
567 return GNUNET_SYSERR;
571 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, session->plugin->name,
572 "Session %p/connection %p: Sending message with %u to peer `%s' with \n",
573 session, session->server_send,
574 msgbuf_size, GNUNET_i2s (&session->target));
576 /* create new message and schedule */
577 bytes_sent = sizeof (struct HTTP_Message) + msgbuf_size;
578 msg = GNUNET_malloc (bytes_sent);
580 msg->size = msgbuf_size;
582 msg->buf = (char *) &msg[1];
583 msg->transmit_cont = cont;
584 msg->transmit_cont_cls = cont_cls;
585 memcpy (msg->buf, msgbuf, msgbuf_size);
587 GNUNET_CONTAINER_DLL_insert_tail (session->msg_head, session->msg_tail, msg);
589 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", plugin->protocol);
590 GNUNET_STATISTICS_update (plugin->env->stats,
591 stat_txt, msgbuf_size, GNUNET_NO);
592 GNUNET_free (stat_txt);
594 if (NULL != session->server_send)
596 server_reschedule (session->plugin,
597 session->server_send->mhd_daemon,
599 server_reschedule_session_timeout (session);
607 * Function that can be used to force the plugin to disconnect
608 * from the given peer and cancel all previous transmissions
609 * (and their continuationc).
612 * @param target peer from which to disconnect
615 http_server_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
617 struct HTTP_Server_Plugin *plugin = cls;
618 struct Session *next = NULL;
619 struct Session *pos = NULL;
621 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
622 "Transport tells me to disconnect `%s'\n",
623 GNUNET_i2s (target));
626 while (NULL != (pos = next))
629 if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
631 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
632 "Disconnecting session %p to `%s'\n",
633 pos, GNUNET_i2s (target));
634 server_disconnect (pos);
642 * Another peer has suggested an address for this
643 * peer and transport plugin. Check that this could be a valid
644 * address. If so, consider adding it to the list
648 * @param addr pointer to the address
649 * @param addrlen length of addr
650 * @return GNUNET_OK if this is a plausible address for this peer
654 http_server_plugin_address_suggested (void *cls, const void *addr,
657 struct HttpAddressWrapper *next;
658 struct HttpAddressWrapper *pos;
659 struct HttpAddress *h_addr;
660 h_addr = (struct HttpAddress *) addr;
662 if ((NULL != p->ext_addr) &&
663 GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
664 p->ext_addr, p->ext_addr_len)))
666 /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
667 if ((ntohl(h_addr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
668 (p->options & HTTP_OPTIONS_VERIFY_CERTIFICATE))
669 return GNUNET_NO; /* VERIFY option not set as required! */
674 while (NULL != (pos = next))
677 if (GNUNET_YES == (http_common_cmp_addresses(addr,
690 * Creates a new outbound session the transport
691 * service will use to send data to the peer
693 * Since HTTP/S server cannot create sessions, always return NULL
695 * @param cls the plugin
696 * @param address the address
697 * @return always NULL
699 static struct Session *
700 http_server_plugin_get_session (void *cls,
701 const struct GNUNET_HELLO_Address *address)
708 * Deleting the session
709 * Must not be used afterwards
711 * @param s the session to delete
714 server_delete_session (struct Session *s)
716 struct HTTP_Server_Plugin *plugin = s->plugin;
717 server_stop_session_timeout(s);
719 GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
720 struct HTTP_Message *msg = s->msg_head;
721 struct HTTP_Message *tmp = NULL;
727 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
728 if (msg->transmit_cont != NULL)
730 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
731 msg->size, msg->pos + msg->overhead);
737 if (s->msg_tk != NULL)
739 GNUNET_SERVER_mst_destroy (s->msg_tk);
742 GNUNET_free (s->addr);
743 GNUNET_free_non_null (s->server_recv);
744 GNUNET_free_non_null (s->server_send);
745 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
746 "Session %p destroyed\n", s);
752 * Cancel timeout for session s
754 * @param s the session
757 server_stop_session_timeout (struct Session *s)
759 GNUNET_assert (NULL != s);
761 if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
763 GNUNET_SCHEDULER_cancel (s->timeout_task);
764 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
765 GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
771 * Function that queries MHD's select sets and
772 * starts the task waiting for them.
773 * @param plugin plugin
774 * @param daemon_handle the MHD daemon handle
775 * @param now schedule immediately
776 * @return gnunet task identifier
778 static GNUNET_SCHEDULER_TaskIdentifier
779 server_schedule (struct HTTP_Server_Plugin *plugin,
780 struct MHD_Daemon *daemon_handle,
785 * Reschedule the execution of both IPv4 and IPv6 server
786 * @param plugin the plugin
787 * @param server which server to schedule v4 or v6?
788 * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
792 server_reschedule (struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *server,
795 if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
797 if (GNUNET_YES == plugin->server_v4_immediately)
798 return; /* No rescheduling, server will run asap */
800 if (GNUNET_YES == now)
801 plugin->server_v4_immediately = GNUNET_YES;
803 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
805 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
806 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
808 plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
811 if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
813 if (GNUNET_YES == plugin->server_v6_immediately)
814 return; /* No rescheduling, server will run asap */
816 if (GNUNET_YES == now)
817 plugin->server_v6_immediately = GNUNET_YES;
819 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
821 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
822 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
824 plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
830 * Disconnect session s
832 * @param s the session
833 * @return GNUNET_OK on success
836 server_disconnect (struct Session *s)
838 struct ServerConnection * send = NULL;
839 struct ServerConnection * recv = NULL;
841 if (GNUNET_NO == server_exist_session (p, s))
844 return GNUNET_SYSERR;
847 send = (struct ServerConnection *) s->server_send;
848 if (s->server_send != NULL)
850 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
851 "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
852 s, s->server_send, GNUNET_i2s (&s->target));
854 send->disconnect = GNUNET_YES;
855 #if MHD_VERSION >= 0x00090E00
856 MHD_set_connection_option (send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
859 server_reschedule (s->plugin, send->mhd_daemon, GNUNET_YES);
862 recv = (struct ServerConnection *) s->server_recv;
865 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
866 "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
867 s, s->server_recv, GNUNET_i2s (&s->target));
869 recv->disconnect = GNUNET_YES;
870 #if MHD_VERSION >= 0x00090E00
871 MHD_set_connection_option (recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
874 server_reschedule (s->plugin, recv->mhd_daemon, GNUNET_YES);
880 server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin, struct Session *s, int to)
882 #if MHD_VERSION >= 0x00090E00
883 /* Setting timeouts for other connections */
884 if (s->server_recv != NULL)
886 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
887 "Setting timeout for %p to %u sec.\n", s->server_recv, to);
888 MHD_set_connection_option (s->server_recv->mhd_conn,
889 MHD_CONNECTION_OPTION_TIMEOUT,
891 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
893 if (s->server_send != NULL)
895 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
896 "Setting timeout for %p to %u sec.\n", s->server_send, to);
897 MHD_set_connection_option (s->server_send->mhd_conn,
898 MHD_CONNECTION_OPTION_TIMEOUT,
900 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
906 * Parse incoming URL for tag and target
908 * @param plugin plugin
909 * @param url incoming url
910 * @param target where to store the target
911 * @param tag where to store the tag
912 * @return GNUNET_OK on success, GNUNET_SYSERR on error
916 server_parse_url (struct HTTP_Server_Plugin *plugin, const char * url, struct GNUNET_PeerIdentity * target, uint32_t *tag)
918 char * tag_start = NULL;
919 char * tag_end = NULL;
920 char * target_start = NULL;
921 char * separator = NULL;
922 char hash[plugin->peer_id_length+1];
924 unsigned long int ctag;
927 * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
932 return GNUNET_SYSERR;
937 separator = strrchr (url, ';');
939 if (NULL == separator)
941 if (DEBUG_URL_PARSE) GNUNET_break (0);
942 return GNUNET_SYSERR;
944 tag_start = separator + 1;
946 if (strlen (tag_start) == 0)
948 /* No tag after separator */
949 if (DEBUG_URL_PARSE) GNUNET_break (0);
950 return GNUNET_SYSERR;
952 ctag = strtoul (tag_start, &tag_end, 10);
955 /* tag == 0 , invalid */
956 if (DEBUG_URL_PARSE) GNUNET_break (0);
957 return GNUNET_SYSERR;
959 if ((ctag == ULONG_MAX) && (ERANGE == errno))
961 /* out of range: > ULONG_MAX */
962 if (DEBUG_URL_PARSE) GNUNET_break (0);
963 return GNUNET_SYSERR;
965 if (ctag > UINT32_MAX)
967 /* out of range: > UINT32_MAX */
968 if (DEBUG_URL_PARSE) GNUNET_break (0);
969 return GNUNET_SYSERR;
971 (*tag) = (uint32_t) ctag;
974 /* no char after tag */
975 if (DEBUG_URL_PARSE) GNUNET_break (0);
976 return GNUNET_SYSERR;
978 if (url[strlen(url)] != tag_end[0])
980 /* there are more not converted chars after tag */
981 if (DEBUG_URL_PARSE) GNUNET_break (0);
982 return GNUNET_SYSERR;
985 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
986 "Found tag `%u' in url\n", (*tag));
988 /* convert peer id */
989 target_start = strrchr (url, '/');
990 if (NULL == target_start)
993 target_start = (char *) url;
996 hash_length = separator - target_start;
997 if (hash_length != plugin->peer_id_length)
999 /* no char after tag */
1000 if (DEBUG_URL_PARSE) GNUNET_break (0);
1001 return GNUNET_SYSERR;
1003 memcpy (hash, target_start, hash_length);
1004 hash[hash_length] = '\0';
1006 if (GNUNET_OK != GNUNET_CRYPTO_hash_from_string ((const char *) hash, &(target->hashPubKey)))
1008 /* hash conversion failed */
1009 if (DEBUG_URL_PARSE) GNUNET_break (0);
1010 return GNUNET_SYSERR;
1013 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1014 "Found target `%s' in url\n", GNUNET_h2s_full(&target->hashPubKey));
1020 * Lookup a mhd connection and create one if none is found
1022 * @param plugin the plugin handle
1023 * @param mhd_connection the incoming mhd_connection
1024 * @param url incoming requested URL
1025 * @param method PUT or GET
1026 * @return the server connecetion
1028 static struct ServerConnection *
1029 server_lookup_connection (struct HTTP_Server_Plugin *plugin,
1030 struct MHD_Connection *mhd_connection, const char *url,
1033 struct Session *s = NULL;
1034 struct ServerConnection *sc = NULL;
1035 const union MHD_ConnectionInfo *conn_info;
1036 struct GNUNET_ATS_Information ats;
1038 struct HttpAddress *addr;
1041 struct GNUNET_PeerIdentity target;
1043 int direction = GNUNET_SYSERR;
1046 conn_info = MHD_get_connection_info (mhd_connection,
1047 MHD_CONNECTION_INFO_CLIENT_ADDRESS);
1048 if ((conn_info->client_addr->sa_family != AF_INET) &&
1049 (conn_info->client_addr->sa_family != AF_INET6))
1051 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1052 "New %s connection from %s\n", method, url);
1054 if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
1056 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1057 "Invalid url %s\n", url);
1060 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1061 direction = _RECEIVE;
1062 else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
1066 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1067 "Invalid method %s connection from %s\n", method, url);
1071 plugin->cur_connections++;
1072 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1073 "New %s connection from %s with tag %u (%u of %u)\n",
1075 GNUNET_i2s (&target), tag,
1076 plugin->cur_connections, plugin->max_connections);
1077 /* find duplicate session */
1081 if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
1088 if ((_RECEIVE == direction) && (NULL != s->server_recv))
1090 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1091 "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
1092 GNUNET_i2s (&target),
1097 if ((_SEND == direction) && (NULL != s->server_send))
1099 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1100 "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
1101 GNUNET_i2s (&target),
1108 /* create new session */
1109 switch (conn_info->client_addr->sa_family)
1112 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
1113 addr_len = http_common_address_get_size (addr);
1114 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
1117 addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
1118 addr_len = http_common_address_get_size (addr);
1119 ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
1122 /* external host name */
1123 ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1124 ats.type = htonl (GNUNET_ATS_NET_WAN);
1128 s = GNUNET_malloc (sizeof (struct Session));
1129 memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
1132 s->addrlen = addr_len;
1133 s->ats_address_network_type = ats.value;
1134 s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
1136 s->server_recv = NULL;
1137 s->server_send = NULL;
1138 s->session_passed = GNUNET_NO;
1139 s->session_ended = GNUNET_NO;
1140 s->connect_in_progress = GNUNET_YES;
1141 server_start_session_timeout(s);
1142 GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
1144 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1145 "Creating new session %p for peer `%s' connecting from `%s'\n",
1146 s, GNUNET_i2s (&target),
1147 http_common_plugin_address_to_string (NULL, p->protocol, addr, addr_len));
1149 sc = GNUNET_malloc (sizeof (struct ServerConnection));
1150 if (conn_info->client_addr->sa_family == AF_INET)
1151 sc->mhd_daemon = plugin->server_v4;
1152 if (conn_info->client_addr->sa_family == AF_INET6)
1153 sc->mhd_daemon = plugin->server_v6;
1154 sc->mhd_conn = mhd_connection;
1155 sc->direction = direction;
1156 sc->connected = GNUNET_NO;
1158 if (direction == _SEND)
1159 s->server_send = sc;
1160 if (direction == _RECEIVE)
1161 s->server_recv = sc;
1163 if ((NULL != s->server_send) && (NULL != s->server_recv))
1165 s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
1166 plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
1169 #if MHD_VERSION >= 0x00090E00
1170 if ((NULL == s->server_recv) || (NULL == s->server_send))
1172 to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value / 1000);
1173 MHD_set_connection_option (mhd_connection, MHD_CONNECTION_OPTION_TIMEOUT, to);
1174 server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
1178 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1179 "Session %p for peer `%s' fully connected\n",
1180 s, GNUNET_i2s (&target));
1181 to = (SERVER_SESSION_TIMEOUT.rel_value / 1000);
1182 server_mhd_connection_timeout (plugin, s, to);
1185 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1186 "Setting timeout for %p to %u sec.\n", sc, to);
1193 * Lookup a session for a server connection
1195 * @param plugin the plugin
1196 * @param sc the server connection
1197 * @return the session found or NULL
1199 static struct Session *
1200 server_lookup_session (struct HTTP_Server_Plugin *plugin,
1201 struct ServerConnection * sc)
1205 for (s = plugin->head; NULL != s; s = s->next)
1206 if ((s->server_recv == sc) || (s->server_send == sc))
1212 server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s)
1214 struct Session * head;
1216 GNUNET_assert (NULL != plugin);
1217 GNUNET_assert (NULL != s);
1219 for (head = plugin->head; head != NULL; head = head->next)
1229 * Callback called by MHD when it needs data to send
1231 * @param cls current session
1232 * @param pos position in buffer
1233 * @param buf the buffer to write data to
1234 * @param max max number of bytes available in buffer
1235 * @return bytes written to buffer
1238 server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
1240 struct Session *s = cls;
1241 ssize_t bytes_read = 0;
1242 struct HTTP_Message *msg;
1245 GNUNET_assert (NULL != p);
1246 if (GNUNET_NO == server_exist_session (p, s))
1252 bytes_read = GNUNET_MIN (msg->size - msg->pos,
1254 memcpy (buf, &msg->buf[msg->pos], bytes_read);
1255 msg->pos += bytes_read;
1257 /* removing message */
1258 if (msg->pos == msg->size)
1260 GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
1261 if (NULL != msg->transmit_cont)
1262 msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
1263 msg->size, msg->size + msg->overhead);
1269 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
1270 "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
1271 GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", p->protocol);
1272 GNUNET_STATISTICS_update (p->env->stats,
1273 stat_txt, -bytes_read, GNUNET_NO);
1274 GNUNET_free (stat_txt);
1275 GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server", p->protocol);
1276 GNUNET_STATISTICS_update (p->env->stats,
1277 stat_txt, bytes_read, GNUNET_NO);
1278 GNUNET_free (stat_txt);
1285 * Callback called by MessageStreamTokenizer when a message has arrived
1287 * @param cls current session as closure
1288 * @param client client
1289 * @param message the message to be forwarded to transport service
1293 server_receive_mst_cb (void *cls, void *client,
1294 const struct GNUNET_MessageHeader *message)
1296 struct Session *s = cls;
1297 struct HTTP_Server_Plugin *plugin = s->plugin;
1298 struct GNUNET_ATS_Information atsi;
1299 struct GNUNET_TIME_Relative delay;
1302 GNUNET_assert (NULL != p);
1303 if (GNUNET_NO == server_exist_session(p, s))
1307 atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
1308 atsi.value = s->ats_address_network_type;
1309 GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
1312 delay = plugin->env->receive (plugin->env->cls,
1317 plugin->env->update_address_metrics (plugin->env->cls,
1319 NULL, 0, s, &atsi, 1);
1321 GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
1322 GNUNET_STATISTICS_update (plugin->env->stats,
1323 stat_txt, ntohs (message->size), GNUNET_NO);
1324 GNUNET_free (stat_txt);
1326 s->session_passed = GNUNET_YES;
1327 s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
1328 if (delay.rel_value > 0)
1330 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1331 "Peer `%s' address `%s' next read delayed for %llu ms\n",
1332 GNUNET_i2s (&s->target),
1333 http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen),
1336 server_reschedule_session_timeout (s);
1342 * MHD callback for a new incoming connection
1344 * @param cls the plugin handle
1345 * @param mhd_connection the mhd connection
1346 * @param url the requested URL
1347 * @param method GET or PUT
1348 * @param version HTTP version
1349 * @param upload_data upload data
1350 * @param upload_data_size sizeof upload data
1351 * @param httpSessionCache the session cache to remember the connection
1352 * @return MHD_YES if connection is accepted, MHD_NO on reject
1355 server_access_cb (void *cls, struct MHD_Connection *mhd_connection,
1356 const char *url, const char *method, const char *version,
1357 const char *upload_data, size_t * upload_data_size,
1358 void **httpSessionCache)
1360 struct HTTP_Server_Plugin *plugin = cls;
1363 struct ServerConnection *sc = *httpSessionCache;
1365 struct MHD_Response *response;
1367 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1368 _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
1370 plugin->cur_connections, plugin->max_connections,
1371 method, version, url, (*upload_data_size));
1373 GNUNET_assert (cls != NULL);
1376 /* new connection */
1377 sc = server_lookup_connection (plugin, mhd_connection, url, method);
1380 (*httpSessionCache) = sc;
1384 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
1385 MHD_add_response_header (response,
1386 MHD_HTTP_HEADER_CONTENT_TYPE,
1388 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1389 MHD_destroy_response (response);
1395 /* 'old' connection */
1396 if (NULL == server_lookup_session (plugin, sc))
1398 /* Session was already disconnected */
1403 /* existing connection */
1404 sc = (*httpSessionCache);
1406 GNUNET_assert (NULL != s);
1407 /* connection is to be disconnected */
1408 if (sc->disconnect == GNUNET_YES)
1410 /* Sent HTTP/1.1: 200 OK as response */
1411 response = MHD_create_response_from_data (strlen ("Thank you!"),
1414 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1415 MHD_destroy_response (response);
1418 GNUNET_assert (s != NULL);
1420 if (sc->direction == _SEND)
1422 response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
1424 &server_send_callback, s,
1426 MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1427 MHD_destroy_response (response);
1430 if (sc->direction == _RECEIVE)
1432 if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
1434 /* (*upload_data_size == 0) first callback when header are passed */
1435 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1436 "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
1438 GNUNET_i2s (&s->target),
1439 http_common_plugin_address_to_string (NULL,
1443 sc->connected = GNUNET_YES;
1446 else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
1448 /* (*upload_data_size == 0) when upload is complete */
1449 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1450 "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
1452 GNUNET_i2s (&s->target),
1453 http_common_plugin_address_to_string (NULL,
1457 sc->connected = GNUNET_NO;
1458 /* Sent HTTP/1.1: 200 OK as PUT Response\ */
1459 response = MHD_create_response_from_data (strlen ("Thank you!"),
1462 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1463 MHD_destroy_response (response);
1466 else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
1468 /* (*upload_data_size > 0) for every segment received */
1469 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1470 "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
1472 GNUNET_i2s (&s->target),
1473 http_common_plugin_address_to_string (NULL,
1478 struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
1480 if ((s->next_receive.abs_value <= now.abs_value))
1482 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1483 "PUT with %u bytes forwarded to MST\n",
1485 if (s->msg_tk == NULL)
1487 s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
1489 GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
1490 *upload_data_size, GNUNET_NO, GNUNET_NO);
1491 #if MHD_VERSION >= 0x00090E00
1492 server_mhd_connection_timeout (plugin, s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value / 1000);
1494 (*upload_data_size) = 0;
1498 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1499 "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %llu ms\n",
1500 s, sc, now.abs_value - s->next_receive.abs_value);
1515 * Callback from MHD when a connection disconnects
1517 * @param cls closure
1518 * @param connection the disconnected MHD connection
1519 * @param httpSessionCache the pointer to distinguish
1522 server_disconnect_cb (void *cls, struct MHD_Connection *connection,
1523 void **httpSessionCache)
1525 struct ServerConnection *sc = *httpSessionCache;
1526 struct Session *s = NULL;
1527 struct Session *t = NULL;
1528 struct HTTP_Server_Plugin *plugin = NULL;
1530 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, p->name,
1531 "Disconnect for connection %p \n", sc);
1536 if (NULL == (s = server_lookup_session (p, sc)))
1539 GNUNET_assert (NULL != p);
1540 for (t = p->head; t != NULL; t = t->next)
1549 if (sc->direction == _SEND)
1552 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1553 "Peer `%s' connection %p, GET on address `%s' disconnected\n",
1554 GNUNET_i2s (&s->target), s->server_send,
1555 http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
1556 s->server_send = NULL;
1557 if (NULL != (s->server_recv))
1559 s->server_recv->disconnect = GNUNET_YES;
1560 GNUNET_assert (NULL != s->server_recv->mhd_conn);
1561 #if MHD_VERSION >= 0x00090E00
1562 MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1565 server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
1568 if (sc->direction == _RECEIVE)
1570 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1571 "Peer `%s' connection %p PUT on address `%s' disconnected\n",
1572 GNUNET_i2s (&s->target), s->server_recv,
1573 http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
1574 s->server_recv = NULL;
1575 /* Do not terminate session when PUT disconnects
1576 if (NULL != (s->server_send))
1578 s->server_send->disconnect = GNUNET_YES;
1579 GNUNET_assert (NULL != s->server_send->mhd_conn);
1580 #if MHD_VERSION >= 0x00090E00
1581 MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
1584 server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
1586 if (s->msg_tk != NULL)
1588 GNUNET_SERVER_mst_destroy (s->msg_tk);
1594 plugin->cur_connections--;
1596 if ((s->server_send == NULL) && (s->server_recv == NULL))
1598 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1599 "Peer `%s' on address `%s' disconnected\n",
1600 GNUNET_i2s (&s->target),
1601 http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
1603 if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
1605 /* Notify transport immediately that this session is invalid */
1606 s->session_ended = GNUNET_YES;
1607 plugin->env->session_end (plugin->env->cls, &s->target, s);
1609 server_delete_session (s);
1616 * Check if incoming connection is accepted.
1618 * @param cls plugin as closure
1619 * @param addr address of incoming connection
1620 * @param addr_len address length of incoming connection
1621 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
1625 server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
1627 struct HTTP_Server_Plugin *plugin = cls;
1629 if (plugin->cur_connections <= plugin->max_connections)
1631 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1632 _("Accepting connection (%u of %u) from `%s'\n"),
1633 plugin->cur_connections, plugin->max_connections,
1634 GNUNET_a2s (addr, addr_len));
1639 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
1640 _("Server reached maximum number connections (%u), rejecting new connection\n"),
1641 plugin->max_connections);
1647 server_log (void *arg, const char *fmt, va_list ap)
1651 vsnprintf (text, sizeof (text), fmt, ap);
1653 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Server: %s\n", text);
1658 * Call MHD IPv4 to process pending requests and then go back
1659 * and schedule the next run.
1660 * @param cls plugin as closure
1661 * @param tc task context
1664 server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1666 struct HTTP_Server_Plugin *plugin = cls;
1668 GNUNET_assert (cls != NULL);
1670 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1671 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1674 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1675 "Running IPv4 server\n");
1677 plugin->server_v4_immediately = GNUNET_NO;
1678 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
1679 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
1684 * Call MHD IPv6 to process pending requests and then go back
1685 * and schedule the next run.
1686 * @param cls plugin as closure
1687 * @param tc task context
1690 server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
1692 struct HTTP_Server_Plugin *plugin = cls;
1694 GNUNET_assert (cls != NULL);
1695 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1696 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1699 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1700 "Running IPv6 server\n");
1702 plugin->server_v6_immediately = GNUNET_NO;
1703 GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
1704 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
1708 #define UNSIGNED_MHD_LONG_LONG unsigned MHD_LONG_LONG
1711 * Function that queries MHD's select sets and
1712 * starts the task waiting for them.
1714 * @param plugin plugin
1715 * @param daemon_handle the MHD daemon handle
1716 * @return gnunet task identifier
1718 static GNUNET_SCHEDULER_TaskIdentifier
1719 server_schedule (struct HTTP_Server_Plugin *plugin,
1720 struct MHD_Daemon *daemon_handle,
1723 GNUNET_SCHEDULER_TaskIdentifier ret;
1727 struct GNUNET_NETWORK_FDSet *wrs;
1728 struct GNUNET_NETWORK_FDSet *wws;
1729 struct GNUNET_NETWORK_FDSet *wes;
1731 UNSIGNED_MHD_LONG_LONG timeout;
1732 static unsigned long long last_timeout = 0;
1735 struct GNUNET_TIME_Relative tv;
1737 if (GNUNET_YES == plugin->in_shutdown)
1738 return GNUNET_SCHEDULER_NO_TASK;
1740 ret = GNUNET_SCHEDULER_NO_TASK;
1744 wrs = GNUNET_NETWORK_fdset_create ();
1745 wes = GNUNET_NETWORK_fdset_create ();
1746 wws = GNUNET_NETWORK_fdset_create ();
1748 GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
1749 haveto = MHD_get_timeout (daemon_handle, &timeout);
1750 if (haveto == MHD_YES)
1752 if (timeout != last_timeout)
1755 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1756 "SELECT Timeout changed from %llu to %llu\n",
1757 last_timeout, timeout);
1758 last_timeout = timeout;
1760 if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value)
1761 tv.rel_value = (uint64_t) timeout;
1763 tv = GNUNET_TIME_UNIT_SECONDS;
1766 tv = GNUNET_TIME_UNIT_SECONDS;
1767 /* Force immediate run, since we have outbound data to send */
1768 if (now == GNUNET_YES)
1769 tv = GNUNET_TIME_UNIT_MILLISECONDS;
1770 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1771 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1772 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1774 if (daemon_handle == plugin->server_v4)
1776 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
1778 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
1779 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
1782 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1783 "Scheduling IPv4 server task in %llu ms\n", tv);
1786 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1788 &server_v4_run, plugin);
1790 if (daemon_handle == plugin->server_v6)
1792 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
1794 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
1795 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
1798 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1799 "Scheduling IPv6 server task in %llu ms\n", tv);
1802 GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1804 &server_v6_run, plugin);
1806 GNUNET_NETWORK_fdset_destroy (wrs);
1807 GNUNET_NETWORK_fdset_destroy (wws);
1808 GNUNET_NETWORK_fdset_destroy (wes);
1815 * Load ssl certificate from file
1817 * @param file filename
1818 * @return content of the file
1821 server_load_file (const char *file)
1823 struct GNUNET_DISK_FileHandle *gn_file;
1827 if (GNUNET_OK != GNUNET_DISK_file_size (file,
1828 &fsize, GNUNET_NO, GNUNET_YES))
1830 text = GNUNET_malloc (fsize + 1);
1832 GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
1833 GNUNET_DISK_PERM_USER_READ);
1834 if (gn_file == NULL)
1839 if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
1842 GNUNET_DISK_file_close (gn_file);
1846 GNUNET_DISK_file_close (gn_file);
1854 * Load ssl certificate
1856 * @param plugin the plugin
1857 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
1860 server_load_certificate (struct HTTP_Server_Plugin *plugin)
1862 int res = GNUNET_OK;
1868 /* Get crypto init string from config
1869 * If not present just use default values */
1872 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
1877 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1878 "Failed to get servicehome!\n");
1879 return GNUNET_SYSERR;
1884 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
1887 &plugin->crypto_init))
1888 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1889 "Using crypto init string `%s'\n",
1890 plugin->crypto_init);
1892 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
1893 "Using default crypto init string \n");
1896 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1897 "KEY_FILE", &key_file))
1900 GNUNET_asprintf (&key_file, "%s/%s", sh, "https_key.key");
1905 GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
1906 "CERT_FILE", &cert_file))
1909 GNUNET_asprintf (&cert_file, "%s/%s", sh, "https_cert.crt");
1912 /* read key & certificates from file */
1913 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1914 "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
1915 key_file, cert_file);
1917 plugin->key = server_load_file (key_file);
1918 plugin->cert = server_load_file (cert_file);
1920 if ((plugin->key == NULL) || (plugin->cert == NULL))
1922 struct GNUNET_OS_Process *cert_creation;
1924 GNUNET_free_non_null (plugin->key);
1926 GNUNET_free_non_null (plugin->cert);
1927 plugin->cert = NULL;
1929 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1930 "No usable TLS certificate found, creating certificate\n");
1933 GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
1934 "gnunet-transport-certificate-creation",
1935 "gnunet-transport-certificate-creation",
1936 key_file, cert_file, NULL);
1937 if (cert_creation == NULL)
1939 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1941 ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
1942 GNUNET_free (key_file);
1943 GNUNET_free (cert_file);
1945 GNUNET_free_non_null (plugin->key);
1947 GNUNET_free_non_null (plugin->cert);
1948 plugin->cert = NULL;
1949 GNUNET_free_non_null (plugin->crypto_init);
1950 plugin->crypto_init = NULL;
1952 return GNUNET_SYSERR;
1954 GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
1955 GNUNET_OS_process_destroy (cert_creation);
1957 plugin->key = server_load_file (key_file);
1958 plugin->cert = server_load_file (cert_file);
1961 if ((plugin->key == NULL) || (plugin->cert == NULL))
1963 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
1965 ("No usable TLS certificate found and creating one failed!\n"),
1967 GNUNET_free (key_file);
1968 GNUNET_free (cert_file);
1970 GNUNET_free_non_null (plugin->key);
1972 GNUNET_free_non_null (plugin->cert);
1973 plugin->cert = NULL;
1974 GNUNET_free_non_null (plugin->crypto_init);
1975 plugin->crypto_init = NULL;
1977 return GNUNET_SYSERR;
1979 GNUNET_free (key_file);
1980 GNUNET_free (cert_file);
1981 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
1988 * Start the HTTP server
1990 * @param plugin the plugin handle
1991 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
1994 server_start (struct HTTP_Server_Plugin *plugin)
1996 unsigned int timeout;
1997 GNUNET_assert (NULL != plugin);
2000 if (GNUNET_SYSERR == server_load_certificate (plugin))
2002 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2003 "Could not load or create server certificate! Loading plugin failed!\n");
2004 return GNUNET_SYSERR;
2009 #if MHD_VERSION >= 0x00090E00
2010 timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value / 1000;
2011 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2012 "MHD can set timeout per connection! Default time out %u sec.\n",
2015 timeout = SERVER_SESSION_TIMEOUT.rel_value / 1000;
2016 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2017 "MHD cannot set timeout per connection! Default time out %u sec.\n",
2020 plugin->server_v4 = NULL;
2021 if (plugin->use_ipv4 == GNUNET_YES)
2023 plugin->server_v4 = MHD_start_daemon (
2030 MHD_NO_FLAG, plugin->port,
2031 &server_accept_cb, plugin,
2032 &server_access_cb, plugin,
2033 MHD_OPTION_SOCK_ADDR,
2034 (struct sockaddr_in *)
2035 plugin->server_addr_v4,
2036 MHD_OPTION_CONNECTION_LIMIT,
2038 plugin->max_connections,
2040 MHD_OPTION_HTTPS_PRIORITIES,
2041 plugin->crypto_init,
2042 MHD_OPTION_HTTPS_MEM_KEY,
2044 MHD_OPTION_HTTPS_MEM_CERT,
2047 MHD_OPTION_CONNECTION_TIMEOUT,
2049 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2051 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2052 MHD_OPTION_NOTIFY_COMPLETED,
2053 &server_disconnect_cb, plugin,
2054 MHD_OPTION_EXTERNAL_LOGGER,
2055 server_log, NULL, MHD_OPTION_END);
2057 plugin->server_v6 = NULL;
2058 if (plugin->use_ipv6 == GNUNET_YES)
2060 plugin->server_v6 = MHD_start_daemon (
2067 MHD_USE_IPv6, plugin->port,
2068 &server_accept_cb, plugin,
2069 &server_access_cb, plugin,
2070 MHD_OPTION_SOCK_ADDR,
2071 (struct sockaddr_in6 *)
2072 plugin->server_addr_v6,
2073 MHD_OPTION_CONNECTION_LIMIT,
2075 plugin->max_connections,
2077 MHD_OPTION_HTTPS_PRIORITIES,
2078 plugin->crypto_init,
2079 MHD_OPTION_HTTPS_MEM_KEY,
2081 MHD_OPTION_HTTPS_MEM_CERT,
2084 MHD_OPTION_CONNECTION_TIMEOUT,
2086 MHD_OPTION_CONNECTION_MEMORY_LIMIT,
2088 GNUNET_SERVER_MAX_MESSAGE_SIZE),
2089 MHD_OPTION_NOTIFY_COMPLETED,
2090 &server_disconnect_cb, plugin,
2091 MHD_OPTION_EXTERNAL_LOGGER,
2092 server_log, NULL, MHD_OPTION_END);
2096 if ((plugin->use_ipv4 == GNUNET_YES) && (plugin->server_v4 == NULL))
2098 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2099 "Failed to start %s IPv4 server component on port %u\n",
2100 plugin->name, plugin->port);
2101 return GNUNET_SYSERR;
2103 server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
2105 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->server_v6 == NULL))
2107 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2108 "Failed to start %s IPv6 server component on port %u\n",
2109 plugin->name, plugin->port);
2110 return GNUNET_SYSERR;
2112 server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
2113 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2114 "%s server component started on port %u\n", plugin->name,
2121 server_stop (struct HTTP_Server_Plugin *plugin)
2123 if (plugin->server_v4 != NULL)
2125 MHD_stop_daemon (plugin->server_v4);
2126 plugin->server_v4 = NULL;
2128 if ( plugin->server_v6 != NULL)
2130 MHD_stop_daemon (plugin->server_v6);
2131 plugin->server_v6 = NULL;
2135 if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
2137 GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
2138 plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
2141 if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
2143 GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
2144 plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
2149 GNUNET_free_non_null (plugin->crypto_init);
2150 GNUNET_free_non_null (plugin->cert);
2151 GNUNET_free_non_null (plugin->key);
2154 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2155 "%s server component stopped\n", plugin->name);
2160 * Add an address to the server's set of addresses and notify transport
2162 * @param cls the plugin handle
2163 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2164 * @param addr the address
2165 * @param addrlen address length
2168 server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
2171 struct HTTP_Server_Plugin *plugin = cls;
2172 struct HttpAddressWrapper *w = NULL;
2174 w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
2175 w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2176 if (NULL == w->address)
2181 w->addrlen = http_common_address_get_size (w->address);
2183 GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
2184 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2185 "Notifying transport to add address `%s'\n",
2186 http_common_plugin_address_to_string (NULL, p->protocol, w->address, w->addrlen));
2188 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2190 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2196 * Remove an address from the server's set of addresses and notify transport
2198 * @param cls the plugin handle
2199 * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
2200 * @param addr the address
2201 * @param addrlen address length
2204 server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
2207 struct HTTP_Server_Plugin *plugin = cls;
2208 struct HttpAddressWrapper *w = plugin->addr_head;
2210 void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
2213 saddr_len = http_common_address_get_size (saddr);
2217 if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
2221 GNUNET_free (saddr);
2226 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2227 "Notifying transport to remove address `%s'\n",
2228 http_common_plugin_address_to_string (NULL, p->protocol, w->address, w->addrlen));
2229 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2231 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
2233 plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
2235 GNUNET_free (w->address);
2242 * Our external IP address/port mapping has changed.
2244 * @param cls closure, the 'struct LocalAddrList'
2245 * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean
2246 * the previous (now invalid) one
2247 * @param addr either the previous or the new public IP address
2248 * @param addrlen actual lenght of the address
2251 server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
2254 GNUNET_assert (cls != NULL);
2255 struct HTTP_Server_Plugin *plugin = cls;
2257 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2258 "NAT called to %s address `%s'\n",
2259 (add_remove == GNUNET_NO) ? "remove" : "add",
2260 GNUNET_a2s (addr, addrlen));
2262 if (AF_INET == addr->sa_family)
2264 struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
2266 if (GNUNET_NO == plugin->use_ipv4)
2269 if ((NULL != plugin->server_addr_v4) &&
2270 (0 != memcmp (&plugin->server_addr_v4->sin_addr,
2271 &s4->sin_addr, sizeof (struct in_addr))))
2273 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2274 "Skipping address `%s' (not bindto address)\n",
2275 GNUNET_a2s (addr, addrlen));
2280 if (AF_INET6 == addr->sa_family)
2282 struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
2283 if (GNUNET_NO == plugin->use_ipv6)
2286 if ((NULL != plugin->server_addr_v6) &&
2287 (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
2288 &s6->sin6_addr, sizeof (struct in6_addr))))
2290 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2291 "Skipping address `%s' (not bindto address)\n",
2292 GNUNET_a2s (addr, addrlen));
2300 server_add_address (cls, add_remove, addr, addrlen);
2303 server_remove_address (cls, add_remove, addr, addrlen);
2310 * Get valid server addresses
2312 * @param plugin the plugin handle
2313 * @param serviceName the servicename
2314 * @param cfg configuration handle
2315 * @param addrs addresses
2316 * @param addr_lens address length
2317 * @return number of addresses
2320 server_get_addresses (struct HTTP_Server_Plugin *plugin,
2321 const char *serviceName,
2322 const struct GNUNET_CONFIGURATION_Handle *cfg,
2323 struct sockaddr ***addrs, socklen_t ** addr_lens)
2326 unsigned long long port;
2327 struct addrinfo hints;
2328 struct addrinfo *res;
2329 struct addrinfo *pos;
2330 struct addrinfo *next;
2334 struct sockaddr **saddrs;
2335 socklen_t *saddrlens;
2341 disablev6 = !plugin->use_ipv6;
2344 if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "PORT"))
2346 GNUNET_break (GNUNET_OK ==
2347 GNUNET_CONFIGURATION_get_value_number (cfg, serviceName,
2351 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2353 ("Require valid port number for service in configuration!\n"));
2354 return GNUNET_SYSERR;
2359 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2360 "Starting in listen only mode\n");
2361 return -1; /* listen only */
2365 if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "BINDTO"))
2367 GNUNET_break (GNUNET_OK ==
2368 GNUNET_CONFIGURATION_get_value_string (cfg, serviceName,
2369 "BINDTO", &hostname));
2374 if (hostname != NULL)
2376 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2377 "Resolving `%s' since that is where `%s' will bind to.\n",
2378 hostname, serviceName);
2379 memset (&hints, 0, sizeof (struct addrinfo));
2381 hints.ai_family = AF_INET;
2382 if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
2385 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
2386 hostname, gai_strerror (ret));
2387 GNUNET_free (hostname);
2388 return GNUNET_SYSERR;
2392 while (NULL != (pos = next))
2394 next = pos->ai_next;
2395 if ((disablev6) && (pos->ai_family == AF_INET6))
2401 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2402 _("Failed to find %saddress for `%s'.\n"),
2403 disablev6 ? "IPv4 " : "", hostname);
2405 GNUNET_free (hostname);
2406 return GNUNET_SYSERR;
2409 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2410 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2413 while (NULL != (pos = next))
2415 next = pos->ai_next;
2416 if ((disablev6) && (pos->ai_family == AF_INET6))
2418 if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
2419 continue; /* not TCP */
2420 if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
2421 continue; /* huh? */
2422 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2423 "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
2425 if (pos->ai_family == AF_INET)
2427 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
2428 saddrlens[i] = pos->ai_addrlen;
2429 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2430 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2431 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2435 GNUNET_assert (pos->ai_family == AF_INET6);
2436 GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
2437 saddrlens[i] = pos->ai_addrlen;
2438 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2439 memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
2440 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2444 GNUNET_free (hostname);
2450 /* will bind against everything, just set port */
2456 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2457 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2459 saddrlens[i] = sizeof (struct sockaddr_in);
2460 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2461 #if HAVE_SOCKADDR_IN_SIN_LEN
2462 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
2464 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2465 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2471 saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
2472 saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
2474 saddrlens[i] = sizeof (struct sockaddr_in6);
2475 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2476 #if HAVE_SOCKADDR_IN_SIN_LEN
2477 ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
2479 ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
2480 ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
2482 saddrlens[i] = sizeof (struct sockaddr_in);
2483 saddrs[i] = GNUNET_malloc (saddrlens[i]);
2484 #if HAVE_SOCKADDR_IN_SIN_LEN
2485 ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
2487 ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
2488 ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
2492 *addr_lens = saddrlens;
2498 * Ask NAT for addresses
2500 * @param plugin the plugin handle
2503 server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
2505 int res = GNUNET_OK;
2506 struct sockaddr **addrs;
2507 socklen_t *addrlens;
2509 res = server_get_addresses (plugin,
2510 plugin->name, plugin->env->cfg,
2512 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2513 _("Found %u addresses to report to NAT service\n"), res);
2515 if (GNUNET_SYSERR == res)
2522 GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
2524 (const struct sockaddr **) addrs, addrlens,
2525 &server_nat_port_map_callback, NULL, plugin);
2529 GNUNET_assert (addrs[res] != NULL);
2530 GNUNET_free (addrs[res]);
2532 GNUNET_free_non_null (addrs);
2533 GNUNET_free_non_null (addrlens);
2538 * Stop NAT for addresses
2540 * @param plugin the plugin handle
2543 server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
2545 /* Stop NAT handle */
2546 if (NULL != plugin->nat)
2547 GNUNET_NAT_unregister (plugin->nat);
2549 /* Clean up addresses */
2550 struct HttpAddressWrapper *w;
2552 while (plugin->addr_head != NULL)
2554 w = plugin->addr_head;
2555 GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
2556 GNUNET_free (w->address);
2563 * Check if IPv6 supported on this system
2565 * @param plugin the plugin handle
2566 * @return GNUNET_YES on success, else GNUNET_NO
2569 server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
2571 struct GNUNET_NETWORK_Handle *desc = NULL;
2572 int res = GNUNET_NO;
2574 /* Probe IPv6 support */
2575 desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
2578 if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
2581 GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
2583 GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
2585 ("Disabling IPv6 since it is not supported on this system!\n"));
2590 GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
2594 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2595 "Testing IPv6 on this system: %s\n",
2596 (res == GNUNET_YES) ? "successful" : "failed");
2602 * Notify server about our external hostname
2605 * @param tc task context (unused)
2608 server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2610 struct HTTP_Server_Plugin *plugin = cls;
2614 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2615 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
2618 GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
2620 urlen = strlen (url) + 1;
2621 plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
2622 plugin->ext_addr->options = htonl(plugin->options);
2623 plugin->ext_addr->urlen = htonl (urlen);
2624 plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
2625 memcpy (&plugin->ext_addr[1], url, urlen);
2627 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2628 "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
2631 if (GNUNET_YES == plugin->verify_external_hostname)
2632 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2633 "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
2634 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2635 plugin->ext_addr, plugin->ext_addr_len,
2638 plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
2639 plugin->ext_addr, plugin->ext_addr_len,
2646 * Configure the plugin
2648 * @param plugin plugin handle
2649 * @return GNUNET_OK on success, GNUNET_SYSERR on failure
2652 server_configure_plugin (struct HTTP_Server_Plugin *plugin)
2654 unsigned long long port;
2655 unsigned long long max_connections;
2656 char *bind4_address = NULL;
2657 char *bind6_address = NULL;
2658 char *eh_tmp = NULL;
2659 int external_hostname_use_port;
2662 if (GNUNET_CONFIGURATION_have_value
2663 (plugin->env->cfg, plugin->name, "USE_IPv4"))
2666 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2670 plugin->use_ipv4 = GNUNET_YES;
2671 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2672 _("IPv4 support is %s\n"),
2673 (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
2676 if (GNUNET_CONFIGURATION_have_value
2677 (plugin->env->cfg, plugin->name, "USE_IPv6"))
2680 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2684 plugin->use_ipv6 = GNUNET_YES;
2685 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2686 _("IPv6 support is %s\n"),
2687 (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
2689 if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
2691 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2693 ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
2695 return GNUNET_SYSERR;
2698 /* Reading port number from config file */
2700 GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name,
2701 "PORT", &port)) || (port > 65535))
2703 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2704 _("Port is required! Fix in configuration\n"),
2706 return GNUNET_SYSERR;
2708 plugin->port = port;
2710 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2711 _("Using port %u\n"), plugin->port);
2713 if ((plugin->use_ipv4 == GNUNET_YES) &&
2714 (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
2715 plugin->name, "BINDTO", &bind4_address)))
2717 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2718 "Binding %s plugin to specific IPv4 address: `%s'\n",
2719 plugin->protocol, bind4_address);
2720 plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in));
2721 if (1 != inet_pton (AF_INET, bind4_address,
2722 &plugin->server_addr_v4->sin_addr))
2724 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2726 ("Specific IPv4 address `%s' in configuration file is invalid!\n"),
2728 GNUNET_free (bind4_address);
2729 GNUNET_free (plugin->server_addr_v4);
2730 plugin->server_addr_v4 = NULL;
2731 return GNUNET_SYSERR;
2735 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2736 _("Binding to IPv4 address %s\n"), bind4_address);
2737 plugin->server_addr_v4->sin_family = AF_INET;
2738 plugin->server_addr_v4->sin_port = htons (plugin->port);
2740 GNUNET_free (bind4_address);
2743 if ((plugin->use_ipv6 == GNUNET_YES) &&
2745 GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2746 "BINDTO6", &bind6_address)))
2748 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2749 "Binding %s plugin to specific IPv6 address: `%s'\n",
2750 plugin->protocol, bind6_address);
2751 plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6));
2753 inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr))
2755 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
2757 ("Specific IPv6 address `%s' in configuration file is invalid!\n"),
2759 GNUNET_free (bind6_address);
2760 GNUNET_free (plugin->server_addr_v6);
2761 plugin->server_addr_v6 = NULL;
2762 return GNUNET_SYSERR;
2766 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2767 _("Binding to IPv6 address %s\n"), bind6_address);
2768 plugin->server_addr_v6->sin6_family = AF_INET6;
2769 plugin->server_addr_v6->sin6_port = htons (plugin->port);
2771 GNUNET_free (bind6_address);
2774 plugin->verify_external_hostname = GNUNET_NO;
2776 plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2777 "VERIFY_EXTERNAL_HOSTNAME");
2778 if (GNUNET_SYSERR == plugin->verify_external_hostname)
2779 plugin->verify_external_hostname = GNUNET_NO;
2780 if (GNUNET_YES == plugin->verify_external_hostname)
2781 plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
2783 external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2784 "EXTERNAL_HOSTNAME_USE_PORT");
2785 if (GNUNET_SYSERR == external_hostname_use_port)
2786 external_hostname_use_port = GNUNET_NO;
2789 if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
2790 "EXTERNAL_HOSTNAME", &eh_tmp))
2794 char * pos_url = NULL;
2796 if (NULL != strstr(eh_tmp, "://"))
2798 tmp = &strstr(eh_tmp, "://")[3];
2803 if (GNUNET_YES == external_hostname_use_port)
2805 if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
2809 GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
2812 GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
2815 plugin->external_hostname = GNUNET_strdup (tmp);
2816 GNUNET_free (eh_tmp);
2818 GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
2819 _("Using external hostname `%s'\n"), plugin->external_hostname);
2820 plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
2822 /* Use only configured external hostname */
2823 if (GNUNET_CONFIGURATION_have_value
2824 (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
2826 plugin->external_only =
2827 GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
2828 "EXTERNAL_HOSTNAME_ONLY");
2831 plugin->external_only = GNUNET_NO;
2833 if (GNUNET_YES == plugin->external_only)
2834 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2835 _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
2838 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2839 "No external hostname configured\n");
2841 /* Optional parameters */
2842 if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
2844 "MAX_CONNECTIONS", &max_connections))
2845 max_connections = 128;
2846 plugin->max_connections = max_connections;
2848 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2849 _("Maximum number of connections is %u\n"),
2850 plugin->max_connections);
2853 plugin->peer_id_length = strlen (GNUNET_h2s_full (&plugin->env->my_identity->hashPubKey));
2860 * Session was idle, so disconnect it
2862 * @param cls the session
2863 * @param tc task context
2866 server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
2868 GNUNET_assert (NULL != cls);
2869 struct Session *s = cls;
2871 s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
2872 GNUNET_log (TIMEOUT_LOG,
2873 "Session %p was idle for %llu ms, disconnecting\n",
2874 s, (unsigned long long) SERVER_SESSION_TIMEOUT.rel_value);
2876 /* call session destroy function */
2877 GNUNET_assert (GNUNET_OK == server_disconnect (s));
2882 * Start session timeout for session s
2884 * @param s the session
2887 server_start_session_timeout (struct Session *s)
2889 GNUNET_assert (NULL != s);
2890 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
2891 s->timeout_task = GNUNET_SCHEDULER_add_delayed (SERVER_SESSION_TIMEOUT,
2892 &server_session_timeout,
2894 GNUNET_log (TIMEOUT_LOG,
2895 "Timeout for session %p set to %llu ms\n",
2896 s, (unsigned long long) SERVER_SESSION_TIMEOUT.rel_value);
2901 * Increment session timeout due to activity session s
2903 * @param s the session
2906 server_reschedule_session_timeout (struct Session *s)
2908 GNUNET_assert (NULL != s);
2909 GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
2911 GNUNET_SCHEDULER_cancel (s->timeout_task);
2912 s->timeout_task = GNUNET_SCHEDULER_add_delayed (SERVER_SESSION_TIMEOUT,
2913 &server_session_timeout,
2915 GNUNET_log (TIMEOUT_LOG,
2916 "Timeout rescheduled for session %p set to %llu ms\n",
2917 s, (unsigned long long) SERVER_SESSION_TIMEOUT.rel_value);
2922 * Exit point from the plugin.
2928 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2930 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2931 struct HTTP_Server_Plugin *plugin = api->cls;
2932 struct Session *pos;
2933 struct Session *next;
2935 if (NULL == api->cls)
2937 /* Free for stub mode */
2941 plugin->in_shutdown = GNUNET_YES;
2942 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2943 _("Shutting down plugin `%s'\n"),
2946 if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
2948 GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
2949 plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
2952 if (NULL != plugin->ext_addr)
2954 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2955 "Notifying transport to remove address `%s'\n",
2956 http_common_plugin_address_to_string (NULL,
2959 plugin->ext_addr_len));
2961 plugin->env->notify_address (plugin->env->cls,
2964 plugin->ext_addr_len,
2967 plugin->env->notify_address (plugin->env->cls,
2970 plugin->ext_addr_len,
2976 /* Stop to report addresses to transport service */
2977 server_stop_report_addresses (plugin);
2978 server_stop (plugin);
2979 next = plugin->head;
2980 while (NULL != (pos = next))
2983 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
2984 "Removing left over session %p\n", pos);
2986 if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
2988 /* Notify transport immediately that this session is invalid */
2989 pos->session_ended = GNUNET_YES;
2990 plugin->env->session_end (plugin->env->cls, &pos->target, pos);
2993 server_delete_session (pos);
2997 GNUNET_free_non_null (plugin->external_hostname);
2998 GNUNET_free_non_null (plugin->ext_addr);
2999 GNUNET_free_non_null (plugin->server_addr_v4);
3000 GNUNET_free_non_null (plugin->server_addr_v6);
3002 GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
3003 _("Shutdown for plugin `%s' complete\n"),
3006 GNUNET_free (plugin);
3011 const char *http_plugin_address_to_string (void *cls,
3016 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3018 return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
3025 * Function obtain the network type for a session
3027 * @param cls closure ('struct Plugin*')
3028 * @param session the session
3029 * @return the network type in HBO or GNUNET_SYSERR
3031 static enum GNUNET_ATS_Network_Type
3032 http_server_get_network (void *cls,
3033 struct Session *session)
3035 GNUNET_assert (NULL != session);
3036 return ntohl (session->ats_address_network_type);
3041 * Entry point for the plugin.
3047 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
3049 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
3050 struct GNUNET_TRANSPORT_PluginFunctions *api;
3051 struct HTTP_Server_Plugin *plugin;
3053 plugin = GNUNET_malloc (sizeof (struct HTTP_Server_Plugin));
3057 if (NULL == env->receive)
3059 /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
3060 initialze the plugin or the API */
3061 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
3063 api->address_to_string = &http_plugin_address_to_string;
3064 api->string_to_address = &http_common_plugin_string_to_address;
3065 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3069 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
3071 api->send = &http_server_plugin_send;
3072 api->disconnect = &http_server_plugin_disconnect;
3073 api->check_address = &http_server_plugin_address_suggested;
3074 api->get_session = &http_server_plugin_get_session;
3076 api->address_to_string = &http_plugin_address_to_string;
3077 api->string_to_address = &http_common_plugin_string_to_address;
3078 api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
3079 api->get_network = &http_server_get_network;
3082 plugin->name = "transport-https_server";
3083 plugin->protocol = "https";
3085 plugin->name = "transport-http_server";
3086 plugin->protocol = "http";
3089 /* Configure plugin */
3090 if (GNUNET_SYSERR == server_configure_plugin (plugin))
3092 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3096 /* Check IPv6 support */
3097 if (GNUNET_YES == plugin->use_ipv6)
3098 plugin->use_ipv6 = server_check_ipv6_support (plugin);
3100 /* Report addresses to transport service */
3101 if (GNUNET_NO == plugin->external_only)
3102 server_start_report_addresses (plugin);
3104 if (GNUNET_SYSERR == server_start (plugin))
3106 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3113 /* end of plugin_transport_http_server.c */